Manual concrete mixer - mechanization of hard work. Homemade concrete mixers: manual, electric How to make an autonomous concrete mixer 250 l

Construction is very often associated with the constant use of a large amount of concrete, the mixing of which requires not only great physical effort, but so much time.

To facilitate, or rather solve this problem, the construction of a home-made concrete mixer, a device that allows you to simply and quickly prepare required amount mixes in the right proportions and the required consistency.

The question of designing a home-made concrete mixer, in principle, rests on a very simple technical task to build:

1. simple in design, with the least number of parts and connections device;
2. while using improvised, maximally accessible or simply low-value parts and mechanisms;
3. reliable and unpretentious in operation, including with minimal costs for repairs and maintenance.

With all the variety of ideas and technical solutions the issue of concrete preparation, all designs of concrete mixers, in principle, are reduced to solving a simple problem - mechanical mixing dry, and after adding water and a liquid mixture until a homogeneous composition suitable for further construction work is obtained.

In view of this, the most popular among do-it-yourselfers are units based on:

• on the use of muscular strength;
• using electric motors and various gearboxes;
• small machines using conventional household power tools as a working body.

According to their type of construction, homemade concrete mixers can be divided into the following groups:

• using the gravitational principle of mixing - simply obtaining a homogeneous mass by simply turning over the container with cement and filler, when, under the action of gravity, the mixture is repeatedly poured and mixed;
• forced-mechanical method of preparing working concrete - most often this is an option when the solution is mixed in a horizontal or inclined container using an internal mixer. Options are possible here - either the mixer itself rotates inside a fixed tub, or the entire container rotates, with the mixer blades tightly fixed inside.
• vibration method - the method of preparing concrete in this case consists in mixing the components using a vibration mixer placed inside the tub. Such a mixer-vibrator, which creates a sufficiently high vibration frequency, produces the movement of cement and filler.

However, of all the considered types of structures for self-manufacturing the first two types are the most suitable, since the third vibrational method of preparing the mixture is the most technologically advanced and energy-consuming.

When starting the practical stage of project implementation, one should clearly understand what characteristics the design should have.

In this the primary role is played by:

1. the size of the working capacity - tubs;
2. the number and type of nodes containing various rotating parts;
3. the design of the unit - it must ensure reliable retention of the tub, be stable and at the same time relatively light.

Tub

There can be a lot of options for use as a container for preparing the mixture:

1. milk concrete per 40 liters;
2. gas cylinders;
3. barrels;

The main issue when choosing a material should be its quality, thickness, the possibility of fastening parts using electric welding.

For a horizontal type of container location, a side filling window is provided, with an inclined, or with the possibility of changing the angle of inclination, tubs with a slightly narrowed neck are used open type, for convenient falling asleep of the components of the solution.

Inside, to improve the quality of the prepared solution, blades or metal combs are welded, which contribute to better mixing of the components. Such blades are made of metal with a thickness of at least 2 mm.

Drive unit

To activate the working capacity of the mixer, the simplest today are:

• manual drive- an elementary solution to this problem - an axis fixed on two supports, on which a bucket is fixed, on one side of the axis there is a curved end, similar to that which is installed on wells;
• electric drive - an electric motor that transmits the rotation of the shaft using a belt or gear transmission to the bucket. This is the most common version of homemade concrete mixer drives, however, it is poorly suited for working in unprepared areas without an electrical network;

Mixer

The mixer can be:

• metal rods with a diameter of 8 mm or more, welded in the form of a comb and used in mixers with a fixed bucket, where only the central shaft rotates;
• sheet metal with a thickness of 3 mm or more, welded in the form of blades to the walls of the mixer tank at an angle of 45 degrees to the bottom;
• standard mixer for electric drill-mixer used in vibrating systems;

Simple Mechanical Concrete Mixer

The simplest and most effective option for a budget concrete mixer.

The design of such a device consists of:

• base in the form of welded from corners, pipes or a profile of a stable base that can withstand the rotation of a barrel with 50-7 kg of concrete;
• a tub, as a rule, is a barrel, a milk can, a metal container from under paint, or part of a gas cylinder with a hermetically sealed neck, and a shaft in the central part, fixed to the base, on bearings or bushings;
• hand drive handle for rotating the bucket, in large options devices for facilitating rotation, handles are provided on both sides of the barrel, for the simultaneous operation of two people in order to facilitate work;

The base is a square, to two opposite sides of which the sidewalls are welded in the form of two triangles (the triangle is the most stable and rigid figure), on top of which the shaft of rotation of the bailey is fixed on bearings.

Horizontal barrel mixer

A simple and efficient mixer.

Consists of:

• grounds;
• buckets, with a hinged lid, and a locking mechanism;
• rotation shaft on bearings or bushings with a handle for rotation;

A design feature is the location of the barrel horizontally or the installation of the shaft diagonally across opposite sides of the bottom and neck of the barrel.

IN this option homemade inside the barrel on a working rotating shaft, two or three combs are attached, resembling a rake. The combs are made of a metal rod, strip, or other material, in such a way as to mix the concrete during rotation, passing between the teeth.

Combs along the shaft are mounted in such a way that between them there is an angle of 180, 120 or 90 degrees from the central axis. The base is made according to the principle of other concrete mixers. Drainage of the finished solution is usually done by tipping the bucket or by opening the drain.

This version of the mixer is considered as the pinnacle of the engineering abilities of do-it-yourselfers in the field of concrete mixers. In fact, this is a copy of the industrial way concrete mixers.

But, at the same time, it has a number of features:

1. instead of the ring gear used in industrial units for home-made analogues, a drive is used through a gearbox or a gear train to a barrel, sometimes the latter to road wheels;
2. at the same time, the tub-barrel, like the industrial prototype, has a narrowing in the upper part of the body, and inside there are 2-3 side mixer blades welded in a spiral to improve the mixing of the solution;
3. the base is designed to support the weight of the container with the filled solution and the possibility of tipping over for draining ready concrete;
4. The most commonly used drive is:
5. an electric motor with a belt drive to the drum rotation shaft;
6. electric motor with gear transmission to the barrel.

Among the indisputable advantages of such a machine is ease of operation and minimum costs labor force at work, but the minus is the accurate calculation of all components and parts, the presence of almost professional knowledge and skills when working with many tools, including electric welding.

Obtaining the highest quality solution is possible when using a vibrating concrete mixer. This is also the most high-tech type of mixer.

Used as a working container gas cylinder or another container with thick walls, but with a relatively small diameter, since quite a lot of power is required to operate the vibrator.

As a vibrator, a conventional perforator with a specially made working body in the form of two dish-shaped or even mesh plates turned upside down to each other can be used.

The container is fixed vertically on the base in such a way that it provides a stable hold of the container itself and the vibration mover.

The propulsion power must be at least 1.5 kW, the use of a smaller engine or a rotary hammer is fraught with inefficient operation of the system or a quick breakdown.

The base of such a concrete mixer is almost identical to all other types and must ensure not only the stability of the structure itself, but also the possibility of turning over the tank to drain the finished concrete.

When assembling such a unit, the following main errors and disadvantages are possible:

• constructive:
• discrepancy between the calculated and real design in terms of the rigidity of the main parts;
• wrong container for the mixer;
• design that does not correspond in terms of power and number of revolutions Electrical engine;
• gearbox that does not meet the requirements;
• technological:
• insufficiently tightly connected body parts;
• unstable base;
• high location of the rotating tub;
• narrow or vice versa wide necks;

In addition, the mandatory requirement of electrical safety when installing electrical equipment should be taken into account.

With a drill, everything is much simpler:

1. The electric drill is not intended for continuous use. The mode of operation is variable-long 5 minutes of work, after which a 15-minute break is required;
2. drill gears today are mostly made of plastic, and are designed for a force sufficient to drill holes no more than 13 mm in concrete, 20 mm in wood or 12 mm in metal, but 70-90 kg of working volume are not intended for mixing;
3. making a concrete mixer with a bowl volume of 5-7 liters is not rational.

Conclusion

As experience shows, the creation of any, even the most a simple remedy mechanization of labor significantly increases productivity and reduces work time.

In fact, this is not the most complex human invention created from improvised means and does not require mandatory higher engineering education, a few skills in working with electric welding, and a couple of days of work will allow you to have a working model of the unit, which makes it possible in the future not only to improve the design, but also to correct the identified limitations.

This article is suitable for any amateur builder who, in his free time from his main job, is trying to equip life on suburban area. Construction is indispensable without concrete. Even if you are building a house from wooden beams, you will definitely need a reinforced concrete foundation or piles. And having kneaded a concrete solution a couple of times with your hands in a bucket or trough using a drill or a shovel, an inquisitive mind begins to look for less labor-intensive ways.

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There are several options. You can order home delivery and the next day the truck mixer will bring the required number of cubic meters. Perhaps this option is not entirely economical. More hardworking owners can buy a concrete mixer, it is compact and equipped with an electric motor for mixing the solution. Throw cement, sand, water and gravel into it in the right proportions, and only manage to release the concrete mixer by pouring the solution out of it. It is cheaper, but you still have to buy such a concrete mixer.

But there is another option: to make a concrete mixer with your own hands. Yes, it is possible if there are drawings. You will spend time on this, but it will more than pay off for you. Moreover, the device is not as complicated as it seems at first glance. The concrete mixer has a simple principle:

• there is a tub or something like a flask where the solution is mixed;
• drive, that is, the mechanism by which the tub rotates and mixing occurs;
• frame that holds it all together.

The concrete mixer has additional small parts, which will be discussed below, but these three are the main ones. And now let's delve into the nuances of making a homemade concrete mixer.

What is a concrete mixer

According to the mixing method, concrete mixers are mainly divided into four types: gravity, mechanical, vibration and combined. Let's talk a little about each, so that you have a little idea about it and so that you can choose the right one for yourself. After all, it can be used for completely different needs: basically it is the foundation (of a house, a fence, and much more), but it can be used to cast different building materials in shape. Blocks of cement, wood concrete and other things.

Gravitational

A unit of this type is the easiest option both to manufacture and to use. Do-it-yourself manual concrete mixer, the tub of which simply rotates along the axis, and the components of the mortar are mixed under the action of gravity. For large volumes, this option is not suitable, because it does not provide good mixing. But if you always knead the solution in small quantities and you didn’t need more, then this option may well be suitable.

Mechanical

Such a home-made forced-action concrete mixer in its pure form is rarely used, because it has a number of disadvantages. It looks like this: a barrel in a horizontal position with a hole at the top for the entire length. The axis runs along the center of the barrel, and metal parts are welded to it, which mix the solution. The hole does not allow you to turn the barrel in only one direction and have to swing it from side to side. Compared to gravity, it has a larger volume, which is a plus. The disadvantages are: poor mixing in the corners and splashing of the solution at high vibrations.

Sometimes mechanical concrete mixers are made absolutely motionless, only the axis inside it moves, to which metal dividers are welded. This design is well suited for the manufacture of wood concrete blocks. We will talk about this below.

Vibrating

Making this type of manual concrete mixer with your own hands is not such a simple matter. The basic principle is that the solution remains stationary and all the mixing work is done by the vibrator. There are many nuances here, which, if not taken into account, will only lead to wasted time.

The tub must be round, not wide, but high, similar to the shape of the Soviet washing machine. The vibrator should be of a strictly defined shape, similar to two low plates stacked together. Actually, at home, two metal plates are the best option. The vibrator should not be too large, its size depends on the volume of the mixing vessel. If you overdo it in choosing the size, then even with visible work, it still will not mix. And the last thing: the location of the vibrator inside the vessel is strictly along the axis, the distance to the bottom of the barrel is equal to the diameter of the vibrator.

If all these conditions are met, the ideal solution from your barrel is guaranteed. But at poor quality sand or cement will have to be mixed a little longer. One minus: high power consumption. And in no case do not try to use a perforator as a drum vibrator. Many craftsmen tried to make a concrete mixer, but most often failed.

Combined Concrete Mixer

This type of concrete mixer is a combination of gravity and mechanical installation. The solution rotates in a horizontal or inclined plane, and protrusions are made inside the vessel itself, which additionally help to mix the components. They are usually made from metal plates different forms, which are welded to the inside of the flask. This type of concrete mixer allows you to mix a large volume of mortar, the mixing quality is also good. Welding plates into a concrete mixer is not difficult, so this type is the most widely used. In the future, we will talk about this type of concrete mixers.

We manufacture a concrete mixer

The theory is over. Let's get down to practice. Now let's take a closer look at how to make a concrete mixer with your own hands. This process must be divided into several stages. We know that a concrete mixer consists of three main components: a mixing bucket, a drive, and a frame. If everything is clear with the drive, it can be either manual or mechanical, when a concrete mixer uses a gearbox and an electric motor, then we will dwell on the manufacture of the tub and frame in more detail. If there are drawings at hand during work, it will be generally wonderful.

Making a tub

The most popular item used as a mixing vessel is standard 200 liter drums. With some reservations, it is suitable for any type of homemade concrete mixer. You can use the body of the washing machine if it is strong enough. But that would be too easy, our goal is to make the tub ourselves.

First, the material. For walls, we take metal with a thickness of at least 2 mm, for the bottom - at least 5 mm. Secondly, the form. It is cylindrical, but at the top in the neck area should narrow in the form of a cone.

Let's write down the sequence of actions point by point:

1. We make a flange-hub. You can find her drawings and make it yourself, but it's better to buy a ready-made one. The detail is important, but not easy to manufacture.
2. We make the bottom of sheet steel with a minimum thickness of 5 mm. In the very center we drill holes and attach the flange-hub.
3. We cut out five main parts of the body from metal 2 mm thick - a shell (it folds up and a cylinder is obtained) and four petals, which are then fastened together to form a cone.
4. We connect the bottom, the shell and the cone with the help of a welding machine and get the base of the barrel for mixing.
5. We strengthen the neck so that later it does not deform. To do this, we weld a reinforcing bar of 10 mm to its circumference.
6. Inside the barrel we weld crosswise cutters. Usually two or three is enough. They are also made from reinforcement, but more durable, or from metal plates. The main thing is to bend them at a right angle. They will mix the solution. In addition, due to them, a homemade concrete mixer will be stronger.

When the tub-mixer is ready, you can start making the frame.

Frame manufacturing

The frame is the backbone of the entire structure. A bucket, a drive and a gearbox are attached to it. For good stability, the legs of the support are welded, and to make it easy to move the concrete mixer, even when filled with mortar, wheels are installed. The frame design itself can be different, the main thing is to maintain stability during the operation of the entire device. Many craftsmen for this adapt various unnecessary metal parts collected in the corners of their summer cottage.

1. The concrete mixer is based on a T-shaped design, due to which a home-made concrete mixer will stand steadily on the surface. The first post is vertically welded to it.
2. A transverse beam is welded to the second rack, along the edges of which wheels are attached.
3. Both racks are fastened together at the bottom with a beam (this makes the structure more stable) and at the top with a stretcher, which will subsequently serve as the basis for attaching the tub.
4. The frame is reinforced with an inclined rack, to which the capacitor box and the starter are attached. These two devices serve to turn on the rotation mechanism.
5. The subframe is made of two pipes and a corner. It looks like a double frame, fastened with jumpers.
6. An electric motor and gearbox are installed on the subframe.
7. The hub flange, which is already attached to the tub, is put on the gearbox. To fix the mixer, a key is used and it is finally fixed with a bolt through a hole in the shaft.
8. A handle is attached to the subframe, which allows you to tilt the mixer tub at different angles.
9. At the end, the frame is protected from scale and covered with paint for metal. The tub can also be painted, but only on the outside, inside the barrel is not necessary.

Now the do-it-yourself concrete mixer is ready for use! You can pour the foundation, install pillars, pour forms of building blocks from wood concrete and much more.

Drive for homemade concrete mixer

In practice, it often happens that the master already has an electric drive and a gearbox of a certain power, and the concrete mixer and its parameters are selected based on this. The ratio of the volume of the mixed components and the power of the electric motor should be approximately as follows: 20 W per 1 liter of solution.

That is, if you have a 1 kW engine at your disposal, then the maximum volume of the mixture should be 50 liters. Given that the tub must be loaded by 30-40%, then its approximate volume can be from 125 to 160 liters. For standard 200 liter barrel a gearbox with a 1.2 kW electric motor is suitable, the load will be equal to 60 liters of solution.

The number of turns is also important. Optimum value: from 30 to 50 rpm. If you do more, then the solution may splatter. You can do less, of course, but then the mixing process will be long, and excess electricity will be consumed.

If there is no electricity

There are times when you need to start construction on a site where electricity has not yet been installed. Then we do not need the engine, but we will use manual power. The manufacturing sequence remains exactly the same, only the drive is replaced by two handles - on one side and the other. The disadvantage is that it takes more effort to mix and it will take more time. But for short and small works, this option can be considered quite acceptable.

Washing machine tub

You can make a tub out of a washing machine if you have it lying around since Soviet times. Moreover, the body of almost any washing machine is suitable for this. You just need to solder all the holes in the drum of the old washing machine. For this, a machine with both horizontal and vertical loading is suitable. There is another feature of this option. If the amount of mortar that you are going to mix in the future concrete mixer is not too large, then the washing machine engine will fit perfectly as a drive.

Using a concrete mixer

A concrete mixer is rarely used in one place. Often you have to carry it or roll it around the site, so prepare an extension cord of sufficient length in advance. The components are loaded into a tub with a slope of 20-40 degrees in the following order: water, cement, sand, and lastly crushed stone, gravel, expanded clay are poured.

It takes 3 to 5 minutes to completely mix the concrete solution or a mixture of wood concrete, then the bucket is tilted with a handle, and the solution is poured into the place prepared for this. You can immediately fill in a new portion of the components and continue working.

After a hard day's work, the device, all its connections and seams must be thoroughly rinsed. Usually this happens already in the evening, when there are not so many forces left and you want to leave everything, because the next day it will again have to be dirty. Don't be lazy. Even in such a situation, it is better to rinse the concrete mixer, this will increase its service life.

Wood concrete blocks consist mainly of two components. In addition to various chemical additives, these are sawdust and wood chips, as well as Portland cement, a hydraulic binder. Such blocks are valuable because houses made of them perfectly retain heat. Therefore, wood concrete blocks are an excellent solution for building walls. warm home. As for the properties of wood concrete, it is low thermal conductivity, increased bending strength, does not support combustion, and is easy to process.

Imagine that everything worked out for you and now you are the owner of a very useful thing in construction - this is a concrete mixer. But so that its service life does not end with one foundation or a set fence, and the thing serves you for a long time and long time, you will have to follow the safety rules and take care of it:

• Pay close attention to cables and contact connections. They must be securely isolated. Work takes place in conditions of high humidity and water splashing, therefore the requirements of electrical safety rules come first;
• The vibration that accompanies the operation of the concrete mixer relaxes threaded connections your makeshift bucket. Therefore, periodically check them and tighten them. And do not forget about the welds, they can also be broken;

• Before turning on the machine, make sure it is stable. All regular stands should rest firmly on the ground, and it is desirable to install wheel chocks under the wheels;
• It is impossible to check the quality of the solution during the operation of the concrete mixer, there are frequent cases of serious industrial injuries;
• Use skin and eye protection;
• Never leave a running concrete mixer unattended.

Output

In conditions of total savings, when the budget for construction work is limited, and this is no wonder these days, many people save on the quality of building materials or on the services of third-party craftsmen. But there are craftsmen who also save on construction equipment. Of course, make a drill or electric planer- a dubious occupation. But the concrete mixer, despite its apparent complexity and bulkiness, is ideal for this, even for home production blocks from wood concrete. You could see this in our article.

Let's summarize. Not a large number of details, some of which can be found right on your site. Homemade concrete mixer has a simple circuit, drawings and manufacturing sequence. You will also need a few tools: a grinder, welding, work with a drill, and, possibly, a soldering iron. From Supplies: bolts, nuts, washers, metal sheet and angle. The main thing is to clearly define in advance why you need it and what you want to see as a result of your work. Then your concrete mixer will not yield to any industrial production, even if it is made from the body of a washing machine.

If you have own house or cottage, then you are often faced with the need to carry out construction work of one scale or another.

No construction can do without concrete - be it a gazebo, a fence, a terrace or a path.

If you have planned several large buildings, then you can place an order for ready-made factory concrete - it will be delivered directly to your site. The construction team usually does just that.

But this option has the following disadvantages:

• high price of concrete mix;
• you will have to purchase a volume concrete mixer, i.e. several cubes. Not every construction site requires this amount of concrete;
• dense housing developments may not allow heavy vehicles to pass through.

There is another option - to rent a concrete mixer, but with frequent use it will be more expensive than acquiring it as a property.

Due to all of the above, having your own concrete mixer is the best way out. It is quite feasible to make such a necessary unit with your own hands.

Advantages of a homemade concrete mixer

A do-it-yourself concrete mixer has the following advantages:

• It will have the shape you need;
• Such a unit has a low cost, as it can be made from the material at hand;
• A homemade concrete mixer is easy to maintain and repair;
• She can be proud of her neighbors and friends.

Before making a concrete mixer, it is better to own experience try out purchase option- offer your help to neighbors who have an industrial copy, or use a one-time rental. This will help to understand the principle of its operation and choose the appropriate parameters.

Big size does not mean the best option. Such units are very energy intensive. Both small and large containers limit the amount of concrete produced in 1 cycle. As a result, the choice of tank parameters should be approached very responsibly.

General technology for creating concrete mixers

To make a concrete mixer with your own hands, you will need a strong cylinder-shaped container, a solid frame structure, a turning mechanism to unload the finished concrete, and a gear motor.

Don't be intimidated by the amount of materials needed - many of them can be bought at a low price or found in the garage.

Instructions for making a manual concrete mixer

You will need:

• metal barrel with a capacity of 100 - 200 l;
• steel corner or profile for the bed;
• two used bearings;
• a piece of metal pipe for the axle and handle.

Of the tools you will need a grinder and a welding machine.

• We cut a hole in the barrel in the form of a rectangle, forming a gap along the joint. We weld on inner surface sill from the corner and lay it with rubber in order to seal.
• The lid will swing open outward, so you need to install strong hinges and a reliable constipation. The existing filler hole can not be welded, the standard cap is quite reliable.
• Inside, we weld several blades of sheet steel 2-3 mm thick for mixing.
• We weld the bearings in the center of the side parts, fasten the hubs or push the steel axle through.
• We fix the barrel on the frame, weld a handle on one end, like a well. The concrete mixer is ready!

Electric Concrete Mixer

The essence of such a concrete mixer is in a stationary tank and active mixing blades.

This unit has both pros and cons.

The advantage of an electric concrete mixer is that it does not require making an airtight hole, as in a manual version.

The downside is the need for glands on the drive axis.

The tank is made of a 200 l barrel with welded walls. The upper part is covered with a lattice. For the base, a profiled pipe is used. The tank is firmly attached. The initial components of the solution are loaded from above, the finished concrete is drained thanks to a shutter with a rubber gasket.

Note!

The mixing shaft is made from an automotive cranked analogue, the blades are made from corners and welded to them steel sheets, 3 mm thick. An oil seal is located at the exit point of the shaft to the gearbox.

The engine is used from a crane. Its power is 5.5 kW. The gearbox is from there. The motor has 3 phases and the ability to change the direction of rotation.

A pallet is placed under the working concrete mixer, collecting the water flowing out at the beginning. It is poured back into the concrete mixer.

In conclusion, we note that the self-created concrete mixer better than analogues from China. We hope this article will help you to do this. necessary thing on one's own.

DIY concrete mixer photo

Note!

Concrete mixing machine, or concrete mixer, or betonerka - a construction device designed to self cooking quality building mix. Such a machine can be stationary and mobile, differing in purpose and principle of operation. To date, a do-it-yourself concrete mixer is good option practical and convenient unit. Its production will require minimal financial costs.

Types of concrete mixers and the principle of their work

Concrete mixer - technical device widely used in conditions modern construction for the preparation of concrete or other cement-based mortar, and presented very different types or forms. Regardless of the typical characteristics and design features, the main function of a concrete mixing machine or mixer is to obtain maximum efficiency in the process of mixing all the components.

Continuous concrete mixers

Continuous concrete mixers have a forced mixing process of all components. From a constructive point of view, these units are the same, and the main differences are in the size, performance and shape of the mixing blades.

The principle of operation of a continuous concrete mixer is the forced process of mixing the components of the solution

Continuous concrete mixing machines carry out a complete set of all technological processes, represented by loading and mixing of individual components, as well as unloading the finished mixture from the unit, which is provided not only by production, but also by control equipment.

The diagram shows the device of a continuous unit

• 8 - a continuous flow of the components of the mixture is fed into the trough;
• 7 - blades mounted on shafts inside the trough at an angle of 40–45 °;
• 6 - shafts inside the trough;
• 5 - unloading gate;
• 4 - gear pair;
• 3 - reducer;
• 2 - belt drive.

The principle of operation of the mixer is based on the loading of a continuous flow of components by belt feeders or conveyors. Simultaneous supply of bulk components and water makes it possible to obtain a homogeneous and high-quality solution in the mixing tank, which is discharged through the discharge opening and can be loaded directly into a special vehicle.

The technical performance indicators of continuous mixers depend on the volume of solution that moves over certain time in the direction of the axis, as well as on the size and angle of the blade part with the frequency of their rotation. The advantages of this version of the concrete mixer are represented by the ability to prepare mortars and hard concretes in significant quantities, as well as the complete static nature of the body. The disadvantages include the need for a constant supply of components, and the inability to obtain a small volume of solution.

Cyclic action

Installations of cyclic action are distinguished by the loading of new components of the mixture only after the complete unloading of the already prepared solution. This version of mixing equipment is more mobile, and the level of performance is determined by the quality of the loaded components and total volume mixing tank.

Cyclic concrete mixers are more mobile

The main function of the cyclic device is to obtain high-quality concrete of mobile, molding and rigid type with the presence of special additives. Units of this type can have a cylindrical or trough-shaped body with a vertical or horizontal shaft.

Mixing of the solution occurs with the help of paddle shafts

• 1 - bearing;
• 2 - electric motor;
• 3 - frame structure;
• 4 - V-belt transmission;
• 5 - reducer;
• 6 - clutch;
• 7 - unit body;
• 8 - blade part;
• 9 - holder;
• 10 - opening for loading;
• 11 - shaft;
• 12 - pneumatic cylinder;
• 13 - shutter;
• 14 - unloading opening of the unit.

The principle of operation is provided by the rotation of the blades on the shafts in the mutual direction, which causes the inclusion of an electric motor and a V-belt transmission. Due to the extremely uniform arrangement of the blades on the shafts, such elements fit perfectly into the free spaces. Mixed components are delivered inside the working mixer through a lock-type opening, after which mixing takes place with the help of paddle shafts and the finished mixture is unloaded through an unloading opening controlled by a pneumatic cylinder.

Benefits most modern models consist in a high quality of mixing in a relatively short time period and in the possibility of using components with different densities, resulting in a high-quality finished composition. The main disadvantages of cyclic equipment are represented by the high cost and technical complexity of the transmission, which implies the provision of regular and competent Maintenance unit.

Gravitational

Option construction machine, characterized by mixing concrete mixtures due to gravity. Gravity mixers are a drum that rotates around an axis of a horizontal or inclined type. A prerequisite for functioning is a strictly defined number of blade rotations, which prevents an excess of centrifugal force inside the drum.

The advantages of this type of concrete mixer are ease of installation and performance.

Gravity construction mixers, as a rule, are designed for the preparation of mixtures, the volume of which does not exceed one cubic meter. Modern installation mobile type is very easy to transport. The most popular and common gravity models are concrete mixing plants in the form of traditional concrete mixer trucks.

The rotational speed in this type of concrete mixer is 20 rpm.

• 1 - loading bucket;
• 2 - a pair of lifting drums;
• 3 - self-braking worm-type gearbox;
• 4 - flange electric motor;
• 5 - mixing drum with blades;
• 6 - steering wheel of the unit;
• 7 - output shaft of a three-stage cylindro-conical type gearbox;
• 8 - the ends of the rope, which covers the bucket;
• 9 and 10 - limit switches for turning off the electric motor;
• 11 - traverse;
• 12 - flange electric motor;
• 13 - single-stage gearbox;
• 14 - fixing device.

Principle of operation: bladed elements inside the drum in the process of their uniform rotation pick up, lift and drop down the prepared solution. The standard speed in gravity concrete mixing technology is limited to 20 rpm.

The undoubted advantages of any gravity mixer are represented by the optimal ratio of the weight of the installation and the total working volume of the tank, the simplicity and reliability of the design, the possibility of using large aggregates, as well as the very low energy load of such equipment. Serious disadvantages of such models include low rates of versatility and the risk of not obtaining homogeneous rigid mixtures.

Forced

Forced-action concrete mixing units are used in the production of not only mobile, but also rigid molding-type concrete, and also allow the production of lightweight concrete with a significant amount of various additives. Forced mixers can be equipped with a horizontal or vertical shaft, which is placed in a trough-shaped or cylindrical body.

In such a concrete mixer, you can prepare solutions with different densities

In forced mixers, high-quality mixing of all components is ensured, and due to the versatility of the design, the production of concretes, as well as solutions with different density and mobility levels, is greatly facilitated.

All components are loaded inside the concrete mixer drum, thanks to the blades they are mixed, and a high-quality solution is obtained

• 1 - mixer body;
• 2 - frame structure;
• 3 - electric motor;
• 4 - unit control panel;
• 5 - sector type shutter;
• 6 - drive handle for opening the shutter;
• 7 - protective element;
• 8 - drive gear for shafts;
• 9 - belt drive protection;
• 10 - safety clutch;
• 11 - mixing shaft.

The principle of operation is based on the loading of all components inside the drum and the ability of the blades to mix the components during rotation to obtain a homogeneous and high-quality mass of the finished solution.

The advantages of forced construction mixers are represented by the high quality of mixing, the reliability of the equipment and its ability to function even in difficult conditions, as well as small dimensions and ease of transportation. The disadvantages include the lack of a maximum ratio of the weight of the equipment to the usable volume of the mixer, as well as too high installed capacity electric drive.

How to make a concrete mixer with your own hands

Of course, mixing can be done in a trough using a conventional shovel, but this approach is very labor-intensive, not allowing to obtain a sufficient amount of a homogeneous and high-quality mixture, and the consumption of components in this case increases significantly.

Independent production of a concrete mixer does not cause difficulties even in the absence of professional knowledge and special skills in this area. It is enough to familiarize yourself with the manufacturing scheme, prepare necessary material and a set of tools, as well as strictly adhere to the step-by-step instructions.

From the barrel

The design has a peculiar trajectory of movement, in the form of an axis of rotation, going through the tank strictly obliquely. Simple mortar mixers are able to function well with temperature regime not lower than plus 2 o C, since the design does not provide heating of the prepared mixture.

The design of such a concrete mixer is quite simple.

• 1 - metal barrel;
• 2 - base from a metal corner;
• 3 - a shaft from a pipe;
• 4 - bearing system;
• 5, 6 - handle and handle;
• 7 - hatch cover;
• 8 - lock connection;
• 9 - rubber seal;
• 10 - loop.

The prepared solution moves between two walls, which ensures the simplicity and efficiency of regular operation. A barrel mixer is capable of mixing about three buckets of concrete mortar very well in twenty revolutions.

Materials and tools:

• metal barrel;
• a set of hardware, represented by bolts, nuts and washers;
• bearings;
• fittings for the handle;
• standard metal corner;
• welding machine;
• electric drill;
• "Bulgarian" or a hacksaw for working with metal;
• spanners;
• level, tape measure and marker.

1. Drill holes on the ends of the barrel for the installation of the shaft.
2. Install bearings under the rotary handle on the outer part of the covers.
3. Cut a hole for unimpeded extraction of the finished solution.
4. Seal the door with rubber.
5. Fix the door with hinged hinges on the hinged latches.
6. Weld the supporting frame structure from metal corners.
7. Equip the shaft with blades made of steel sheet.
8. Install shaft and knobs.
9. Place the barrel on a supporting metal structure.

If desired, the design can be supplemented by an electric motor, a gearbox to reduce torque, a V-belt and a moisture-proof switch, as well as a wire system. In operation, this model of a concrete mixer is less stable, therefore, it is necessary to ensure high-quality additional fixation.

From the washing machine

The construction mixer, made on the basis of a washing machine, has a fairly high performance. In the process of drum rotation, stable stability is necessary, but the presence of a certain dissonance is explained by the components of the solution, which constantly shift the center of gravity. For this reason, it is necessary to resolve the issue of a reliable base or frame for installing a concrete mixer made using a washing machine.

The most stable geometric figure is a triangle, which can withstand significant loads and retains its position well. The advantages of a concrete mixer, self-assembled on the basis of a washing machine, are represented by individual height selection, but the best option is a design with a lower tank location at a level of 50–80 cm. cement mortar directly depends on the size of the tank of the washing machine.

To ensure stability, you need to make a reliable base for the concrete mixer

Materials and tools:

• welding machine;
• electric drill;
• standard set of screwdrivers;
• hacksaw for working with metal;
• capacity from the washing machine;
• metal corners or a pipe for the manufacture of a frame frame;
• steel sheet for the manufacture of blades.

If you want to make your own auger concrete mixer, you need to make a special shaft.

Step by step manufacturing process:

1. Seal the drain hole in the working activator type washing machine.
2. Make a swivel mechanism from metal corners or pipes.
3. Place the washing machine on the swivel tipping mechanism.
4. Install the frame on "legs" half a meter high to ensure maximum stability of the structure.

It is important not to perform a rigid fastening of the tank along the perimeter of the frame, and installation on a canopy should allow tipping with an emphasis on the frame base. Such a design is fixed on the basis of an activator-type washing machine with only four metal corners. The performance of the finished construction mixer is ensured by connecting the unit to a 220 V network.

From a flask

Traditional flasks made from milk or paint can be an excellent base used in the manufacture of a compact concrete mixer. Technological capabilities allow the frame to be made on the basis of metal corners or pipes, as well as ordinary wooden bars. As a rule, three buckets of concrete mortar can be made at the same time inside such a mixer.

Compact concrete mixer that allows you to prepare three buckets of mortar in one go

The flask must be placed in an inclined position, using for this purpose four conventional rotating supports or a frame structure with an angle of 20–30 ° relative to the horizon. Thus, the device is provided with the rotation of the unit in accordance with the longitudinal axis.

Photo gallery: components of a homemade flask-based concrete mixer

The flask will be a good reservoir for mixing Engine elements Manual variant Working principle of concrete mixer Composite mechanism for homemade concrete mixer

Homemade manual concrete mixer can be made within a couple of hours, using a milk flask and almost any metal scrap for this purpose.

Materials and tools:

• welding machine;
• electric drill;
• screwdrivers;
• hacksaw for working with metals;
• metal flask;
• metal corners for the manufacture of a frame frame.

Step by step manufacturing process:

• Drill holes for the handle.
• Pass the axle equipped with a handle through the holes drilled in the flask.
• Make a support metal structure frames.
• Install the unit on the frame.

Easy operation of the construction mixer is ensured by the obligatory balance of such a unit, therefore the axis is passed only through the center of gravity. Ordinary water couplings can serve as bushings for the axle, and the stops are made by welding nuts lubricated with lithol or grease to the axial part. This option is very simple to use, but a large amount of the solution is not mixed well enough and quickly.

Variants of concrete mixers for self-production (with drawings)

There are several easy-to-make construction mixer options that have proven to be highly effective in the preparation of concrete solutions of various volumes.

Mechanical option

The main advantage is a fairly large volume, and both electric and manual drives can be used for equipment. The unloading of the finished composition is carried out by the traditional tilt of the structure to the side.

The main disadvantage of such a cylindrical tub is the insufficiently high-quality mixing of the solution in corner areas and the risk of splashing the mixture if the design is too fast. The model is able to knead a simple mixture within five minutes, and mixing dry ingredients takes no more than ten minutes.

Combined horizontal version with combs

Electric or manual construction based on a cylindrical tank with high uniformity and excellent mixing speed. The device also has high speed and the quality of the solution preparation procedure. To mix one batch of solution, it is enough to perform only four turns of the handle.

concrete mixers combined type have good mixing speed

The disadvantage is the structural complexity and a large number of components, and the installation of an unloading hatch with high-quality and very reliable seals, latches and hinges requires increased attention.

Combs are made from ordinary metal corners

For the manufacture of the comb, metal corners should be used, which are securely fixed on the base.

For reliability and stability under the concrete mixer, it is recommended to make a base

For welding side racks, struts, channels cut into individual elements, as well as durable metal corners are used.

Electric option

The most common and popular design of a construction mixer, most often done by hand. To date, a huge number of variations of such a unit are known, which may have some differences in terms of design and specifications.

Such a construction mixer is able to provide a considerable yield of the finished solution

The best option it is considered to be the use of a cylindrical tank, in which the bottom part and the neck must necessarily be strengthened with cross-welded strips. Such a frame electric concrete mixing structure, securely welded on the axis, is characterized by high productivity and sufficient output of the finished solution.

Some difficulty can be caused by the assembly of the container rotated together with the axial element, which is due to the need to make a high-strength frame structure. However, thanks to this technical features, the electric concrete mixer can be used for the longest time possible.

vibration option

If you have a hammer drill with a power rating of 1.0–1.3 kW and a percussion forced mechanism, it is quite possible to make a home-made vibratory concrete mixer.

In this design, it must be taken into account that the distance to the bottom part must correspond to the radius of the unit

In the manufacture of such a design, it must be remembered that the tank used must be round and high, not very wide, located on the axis. The standard distance to the bottom must correspond to the radius of the machine. It is strictly forbidden to use any flat containers made of sheet metal. In such a tank, there is no wave excitation necessary for mixing the solution. The best option is to use a pair of metal plates stacked together, and the diameter of the vibrator should be a quarter of a meter for every 1.3 kW of power.

Modern barrel variant

An interesting design from a technical point of view, which can easily be made in accordance with the step-by-step illustrations below. It is necessary to prepare a two-hundred-liter barrel, an electric motor for 250 W and 1430 revolutions, as well as a wheel from a conventional motorcycle, two belts and a couple of rings welded to each other. The pulley is securely welded to the bottom of the tank. The frame structure is made on the basis of a channel and a durable metal pipe.

Photo gallery: making a concrete mixer from an ordinary barrel

For the manufacture of a concrete mixer, an ordinary barrel is suitable Drive mechanism part Anchoring metal sheets on the frame Preparation of the base for a concrete mixer Installing the concrete mixer on the base Concrete mixer ready to go The construction unit can be equipped with an engine Engine drive belt Reservoir with blades for mixing the components of the solution Concrete mixer at work

Video: homemade concrete mixer at work

Video: making a concrete mixing unit from a barrel

Thus, the standard ready-made design of a self-made construction mixer is represented by a stationary or mobile bed, mixing working elements, a tank for the direct mixing process and an unloading mechanism. Also important parts of the design include transmission and gasoline or electric propulsion unit.

It is not difficult to make an efficient concrete mixing unit on your own, but it should be remembered that the distance from the gears to the pulleys must be correctly verified as much as possible even before execution. installation work. The impossibility of connecting a grounding contract to a concrete mixer is leveled by the electrification of the device using a standard RCD, and all moving internal parts must be equipped with protective covers. The starting start of the concrete mixing machine is carried out in idle mode, but the preparation of the first concrete solution should not be the full load of the device.

Many people like it on their personal plot do your own repairs. To fix the foundation of the house, fill in the paths, put up a fence on the posts, you need such an aggregate as a concrete mixer. There is no point in purchasing an industrial model, because it will be very expensive. In this case great solution there will be a do-it-yourself concrete mixer, which does not require large financial costs. So how do you make a concrete mixer yourself? Thanks to the presented video, you can clearly see the whole process of such manufacturing.

What is a concrete mixer for?

Many find that a small amount of mortar can be easily mixed with a shovel. However, this results in a mixture of very poor quality. The fact is that it is very difficult to mix the solution in the trough with a shovel. Such exercise stress not for everyone, so easier to install concrete mixer, collected by hand from a barrel. In addition, if you knead a large amount of the mixture, then in the end the composition will turn out to be dry. The solution begins to lose moisture much faster than it has time to stir to the desired consistency.

Good quality concrete will not work even if you use a drill. When fixing it on the bracket, lumps of sand remain in the mixture. The drill should not only spin, but also move back and forth and in a circle. Often the tool cannot withstand such stress and breaks.

To understand the principle of operation of a do-it-yourself homemade concrete mixer, which is made for a small amount of work, it is necessary to consider the process of mixing the solution. There are 3 ways:

• gravity method;
• vibration method;
• mechanical method.

Gravity method. In industry, this method is not used, because the resulting cement is of poor quality. As a result of gravitational mixing, the container rolls over, the components begin to "flop" on top of each other and mix into a relatively homogeneous mass.

vibration method. Counts the most reliable way of production concrete in industry. In the fixed bucket, the vibromixer begins to move, resulting in a high-quality solution.

mechanical method. Used only in conjunction with gravity. In this case, either the mixer starts to rotate in a fixed tub, or a tub with protrusions inside rotates.

Manufacturing technology of concrete mixer

There are a large number of home-made units that are adapted for the manufacture of concrete. The simplest design can be made from an ordinary milk can, a large pot, an old boiled water. Its drawing is quite simple, and the manufacturing technology is even simpler:

• weld the container to the axis;
• a stick, a piece of pipe or a rubber band is pushed into the lid and the lid is pulled very strongly to the handles;
• to simplify the design couplings are not used, and arcuate recesses are cut in the frame and the axis is laid on them.

To make a more practical unit, you need to use other drawings.

Do-it-yourself concrete mixer manufacturing steps

Container manufacturing

Before you start creating a concrete mixer with your own hands, you should choose a container. Best use for this metal barrels which can hold at least 200 liters. Exactly this volume is considered optimal in order to knead the required amount of concrete at a time. It is better not to use plastic tanks, as they will not last long.

To make a concrete mixer, you need a barrel with a lid and a bottom. If the container does not initially have a lid, then it should be welded by cutting it out of a sheet of metal. After that, flanges with bearings should be attached to the bottom and lid of the barrel. A hatch is cut out in the side, through which the components of the solution will subsequently be poured. It is best to make such a hole closer to the end of the tank, which will be lower during the operation of the concrete mixer. The cut out part of the barrel will be used as a manhole cover. It is fixed with the help of hinges and some kind of locking device.

In order for the solution to mix better, the blades are welded to the inner walls of the barrel at an angle of 30 - 40 degrees. The angle of inclination is calculated in such a way that during the mixing process, the concrete can be "pushed" out. In addition, such blades can be fixed not on the walls, but on the shaft of the device itself.

If you cannot find a suitable container, then you can make it yourself. To do this, you will need the following tools and materials:

• sheet metal 1.5 - 2 mm thick;
• welding machine;
• rollers;
• wooden mallet or hammer.

Before cutting metal drawings to be prepared indicating the required dimensions. To make a concrete mixer body, you will need a central round section, the bottom of the tank and two truncated cones that make up the bottom and upper part designs. Parts cut according to the markup must be bent into rings. It is more convenient to do this with the help of rollers. After fitting all the details, the seams are securely welded.

Base mounting

A homemade concrete mixer must have a reliable and stable base. Otherwise, the structure may turn over during operation. If it is not intended to load a large amount of concrete into it, then the skeleton is best made from a square wooden beam, having a cross section of 10x10 or 15x15 cm. So that the base of the structure cannot suffer from vibration during operation, you should use half-tree or spike connections. After assembly, all joints must be properly glued and tightened with self-tapping screws.

If you want to create a more reliable and durable unit, you should give preference to a frame that welded from metal not less than 45x45 mm in size. You can also use a channel. If there is no gas welding machine, then the frame is fixed with rivets or nuts with bolts.

If there is such a desire, then the base can be equipped with wheels. This will require an axle without bearings and the wheels themselves. This concrete mixer is easy to turn over and move. When assembling the base, it is necessary to provide handles. With their help, the device can be moved.

During the assembly process, the frames must provide a place for the engine. Also will need a counterweight so that when the concrete is unloaded, the structure does not tip over. If you plan to unload the solution with a shovel, then in this case the counterweight will not be needed. All these points must be provided during the creation of the drawing.

Engine mounting

To make the concrete mixer more efficient, you need any single-phase motor, the rotation speed of which is not more than 40 rpm.

Many craftsmen who create a home-made design advise using electric motors from old washing machines that are out of order, such as the Wave or the Seagull. Such motors are able to work for a long time and not overheat. When choosing an engine, it should be remembered that the optimum rotation speed of the tub is 20 - 30 rpm. For this, various gearboxes are used. However, the best and simplest option is to use a pulley and a drive belt.

Instead of a washing machine engine, you can use a motor from a motorcycle or a gasoline-powered moped. In this case, the concrete mixer will not need power supply and can be used in any conditions. The engine is fastened with 4 bolts to the bracket or to the frame, which are welded to the gearbox housing.

However, a home-made concrete mixer is able to work with manual control. In this case, neither electricity nor gasoline will be needed for it. Such a simple device is mobile, easy to assemble, and anyone can manage it. Its only drawback is the presence of an assistant for mixing the solution.

Finally, a shaft is threaded through the container of the structure. To make the device more stable, it should be dug into the ground at an angle of 30 degrees.

Thus, to make a concrete mixer with your own hands, no special skills are needed. More clearly the manufacturing process can be seen in the video. Before you start assembling such a device, you should use the drawings. They will help to correctly and accurately create a home-made design without serious financial investments.