Reliable homemade jack. Do-it-yourself air jack or how to make a simple air jack Drawings of homemade screw bottle jacks

I was prompted to take up such "creativity" by the statement about the "hard" work of copyists of other people's homemade products. Let's call it "pen test".
To complicate my task, I completed it from a video plot.

I must say right away, may the author forgive me and let him himself look for his creation on the Internet. I present to your "court" MY "creation".

Each motorist, with the purchase of a car, acquires a jack for maintenance. Jacks are different, both purely mechanical and purely hydraulic. But all of them have a major drawback, which is ease of use. It is impossible to install a jack under the car without bending over in "tri-doom". There are more advanced ones for stationary use, but the cost of such "rolls over". That's about such a jack and will be discussed.
The author of the homemade product connected two types of jacks together. Here's how he did it.

Design features.
For his design, the author used a ready-made hydraulic jack, making a fixture for it. The whole structure consists of a thick-walled channel at 80. made from a whole billet. The bends of the structure were achieved by cutting the side walls and further welding. From the photo you can clearly see the device of the support rollers (wheels), I don’t see the point in dwelling on them. For direct support on the car body, a rubber support is fixed, it can be taken from the support pads of the springs, the engine ... having finalized to the desired size.

To install and fix the jack, a metal plate is welded (screwed) onto the lower channel, having the size of the jack base and a thickness of about 5 mm. The main focus will be on the channel.

To fix the jack, two 8-10mm holes were drilled in its base, and two guide pins were installed in the base of the welded platinum for the jack. That allows you to securely fix the jack and at the same time freely remove it.
A piston pin from the car was welded onto the main rod of the jack, cut off to fit the inner width of the channel. This finger rests on the movable part of the device and so that the jack cannot "slip", limiters are welded on both sides of the finger inside the channel in the form of two metal plates with a thickness of at least 8-10 mm. In this case, the finger should rotate easily there.

For rigidity of a design "kerchiefs" are welded. In order not to increase the weight of the device, they are not made of solid metal. A handle is also welded for ease of use.

Having rolled the device under the car, you, as usual, use the handle to start lifting the main rod of the jack and thereby set the lifting arm in motion.

Due to the enlarged lifting lever, it is possible to completely lift the entire side to be lifted. Both wheels are not supported.

That's probably all about the features of the manufacture of this design.

To give a homemade "look", it must be painted.

What do you need to make such a "rolling" jack:
0. Head.
1. Ready hydraulic jack.
2. Thick-walled channel at 80, around 1.5m.
3. Metal plates with a thickness of 5 to 10mm, 150-200 cm square.
4. Metal "kruglyash" with a diameter of 12-16mm. 1-1.5 meters.
5. Car piston pin.
6. Rubber "cushion".

Tool
1. "Bulgarian"
2. Welding.
3. Locksmith tool.

Having at hand a drawing - a screw jack, we make it with our own hands from steel bent equal-shelf channels GOST8278-83.

In the figure, the types of sizes of the assortment used are highlighted in blue rectangles

The screw jack consists of the following parts:
Base
Lower shoulder
upper shoulder
Emphasis
screw mechanism

BASE

Let's make from a range with a cross-sectional area of ​​\u200b\u200b2.63 (cm²). We drill four through holes with a diameter equal to the diameter of the pin. When drilling, strictly maintain the center distance between them. If necessary, the base can be attached to a wider removable platform.

LOWER SHOULDER

We will produce from a range with a cross-sectional area of ​​\u200b\u200b1.99 (cm²) by analogy with the base.

UPPER SHOULDER

Let's make from a range with a cross-sectional area of ​​\u200b\u200b2.28 (cm²) by analogy with the lower shoulder.

UPOR

Let's make from a range with a cross-sectional area of ​​\u200b\u200b1.99 (cm²) by analogy with the upper shoulder.
From above, we fasten the rubber gasket.

SCREW MECHANISM

1. Shaft - screw. We will make from a metal bar with a diameter of twelve millimeters. On the one hand, there is an M12 thread, on the other, a retainer, which is attached to the shaft with a cotter pin through a through hole on the shaft.

2. Axis - emphasis. Relative to which the rotation of the lower and upper arms occurs.

The axles on both sides are pins with cylindrical flat heads, which are attached to the axle with cotter pins.

A through hole with a diameter of ten millimeters was drilled in one stop, and an M12 internal thread was cut in the other.
3. Retainer. Fixes the shaft from the side of its rotation and provides the possibility of transmitting torque to the shaft.

Performance characteristics of a do-it-yourself screw jack.

Motorists, and especially those who like to spend a couple of free hours in the garage, are people who, at the genetic level, develop a talent for getting practical benefits from improvised things. They don't have to be coaxed into new experiments or trying out a new way to fix, assemble, or remove something without owning a specialized tool.

Why invent something new when in three or four hours and practically for free you can assemble a jack with your own hands- a useful, practical and indispensable tool for every car owner.

In the photo - types of jacks and how to use them

A car jack is a universal device that can hold structures weighing up to two tons, and sometimes more, for days. It's like a third hand for a car mechanic: super strong, durable and one hundred percent efficient.

The simplicity of design and the abundance of varieties of functional tools allows you to make an exact analogy of any branded jack with your own hands.

How to make a screw jack

The classic and most common diamond-shaped jack is a screw jack. Make it like this do-it-yourself jack- a matter of two hours, especially if you have one and a half to two meters of channel and a basic set of fasteners. The compact tool will easily fit in the trunk, and in any emergency and unforeseen situation, you will praise yourself for your foresight and ingenuity.

Many people know how to assemble a jack from a channel, but have never tried it. Only five elements, and the tool is already 90% ready:

• Levers from a steel bent channel with equal sides - 4 pcs;
• Fragments of the channel for the lower and upper arms (the lower arm can be replaced with a wider and more stable base);
• Rubber pad (on the upper shoulder, for the jack);
• Axles holding the upper and lower arms (pins with heads on the axle, secured with cotter pins);
• Threaded screw fixed to the shaft on one side.

At the preparatory stage, drill holes at the junctions of the elements, and then begin assembly. Connect the shoulders, fasten them together and on the bases. Pass the threaded screw into the shaft and check the homemade jack for lifting force.

In the photo - screw jack assembly diagram

As you can see, a simple method that does not require welding and professional equipment (except for an electric drill) takes only an hour or two and does not damage the budget.

How to make an air bag jack

It is a completely different matter when a jack is needed for more serious work than, for example, changing a wheel on the road:

• Lifting vehicles weighing more than 2 tons;
• Work in the inspection hole;
• Professional activity in a car service;
• Lifting the car in hard-to-reach spots.

In cases where classic screw models cannot cope, home-made hydraulic jacks from an air cushion come to the rescue: they are relevant not only for a car, but also for other heavy loads - safes, workbenches, large-sized furniture.

To assemble a homemade air jack, you need a minimum of materials:

• Pneumatic cushion from a bus or truck;
• Air hose + supply and bleed system;
• Cushion stand + car pad;
• Compressor (which, by the way, can also be made by hand).

Details about how to make a jack with your own hands from an air bag, watch the video https://www.youtube.com/watch?v=vg8z68ObTEA .

In the same way, you can make a pit "lift" (for a viewing ditch), or rolling jack: The type of air bag is irrelevant.

In the photo - pneumatic (rolling) jacks

How to make a rack jack

He always comes to the rescue when other models are powerless, and human imagination and physical capabilities have been exhausted. A rack jack will help if you need:

• Raise the motorcycle to a height;
• Raise a truck, bus, train or truck body;
• Pull the car out of the road (mud, sand, swamp, stones);
• Raise the car by the hitch.

There are no secrets in how to make a rack model, it will take only three points and about an hour of time:

• From the available rails, weld one, elongated (1.5 - 2 meters, depending on the needs);
• Weld a stable base to them;
• Put on top of the jacking mechanism with a heel, found in the bins of the garage (or bought by agreement with a neighbor).

If desired, fasteners can be additionally made to such a device, allowing you to lift the car by the wheel disks.

Simple manipulations and a little spatial imagination will allow you to save money and assemble a device with your own hands, without which not a single replacement of wheels and other parts of the suspension is complete. And with the right approach and proper use of resources, a homemade jack will help you out in many situational troubles.

Almost everyone has a car now. For some, it acts as a source of income - these are taxis, buses, cargo transportation, etc. Some people need it just to get around. But for true motorists, the car is the closest friend who helps out in difficult times and never fails. They take care of it, take care of it, repair it on time. Often such people in life are friends with technology and love the instrument. They like to do something with their own hands, because it brings great pleasure. Often you get some useful and interesting gizmos for the car.

For example, it would be a good idea to make a jack. Indeed, not a single motorist can do without this device. Many, of course, will now say that it is easier to go and buy it in a store. But for a true mechanic to build such a thing, especially for his car, it will not be difficult. It is only important to know how to make a jack, and what it will consist of.

Before you start making a jack for a car with your own hands, you need to decide what design it will be. To do this, you need to know the main varieties of these devices that can be found in stores:

• Rack. This type has been used for a very long time. It is based on a long metal rail with holes, a lever and a ratchet with a perpendicular end. Pulling the lever down, the ratchet lifts the weight along with it. Pulling up - it works, locking itself into one of the holes closest to the rail along with the load. Then the cycle repeats again;

  rack jack

• Screw. The most common jack among domestic motorists. It can be presented in different ways, but the principle of operation is the same - rotating, the screw raises or lowers the dynamic part. It is often made in the form of a strong lever attached to a movable mechanism, which in turn walks along brackets in the case. There is also a rhombic jack. It is much more practical and is a diamond-shaped body, which is made of four moving parts. A stand is attached at the bottom, and a lifting platform is attached at the top. A long screw passes through the side mounts. If you twist it, the figure will either fold or stretch upward, lifting the load;

  

  screw jack

• Hydraulic. Most often, such devices can be found in truckers who lift heavy truck axles when changing wheels. They can be presented in different ways and have a different principle of operation, but they all have the same meaning - there is a hand pump that creates oil pressure in the main cylinder. Under its action, a platform with weight begins to climb out. These jacks are characterized by high load capacity, as well as large weight and height;

  

  Hydraulic jack

• Pneumatic. It is somewhat reminiscent of an air balloon, which are installed on the air suspension of a car. Simply put, this is a small platform on wheels (maybe without them), on which a hollow, thick-walled rubber cushion is attached. Air is supplied through the fitting from a compressor or cylinder. Pressure builds up and the pillow begins to rise.

  

  pneumatic jack

These are the main types of jacks that are used most often. They are classified precisely according to the type of force used (mechanical, hydraulic, etc.), but there are many varieties of them. So, for example, hydraulic devices are haulage, cylindrical, trailed, two-level. That is, there is one type of jack, and there are several types of it. Therefore, there is a great choice in order to independently make your own model using a prototype.

Skills required in the manufacture of a jack

It should be said right away that needlework is not an easy task and requires certain skills. In our case, these are almost all the abilities that a novice mechanic should have:

• welding- the most basic thing that is required when working with metal. Since the structure will be assembled from scratch, it will only need to be welded. Moreover, this must be done with high quality, so that in the end a durable product is obtained;
• cutting- it is enough to be able to cut iron with a grinder. Well, if you have the skill of cutting with an oxygen torch;
• treatment- without the skill of using a file or grinder it will be difficult;
• turning case- in principle, you can do without it, but if you are fond of it, it will be much easier in the manufacture and processing of some parts;
• painting- a hand-made thing must be painted.

If you have the above skills, then in the process of making a jack, no problems should arise. The higher the skill level of the tool, the better the product will turn out.

In order to make a jack, you must have the right tool. The first step is welding, since it will be assembled with its help. It is desirable that this be semi-automatic device with carbon dioxide. Then the seams will be much smoother and there will be no excess slag. Second, and no less important, is Bulgarian. Well, if the assortment has both small and large. With their help, you will cut blanks from steel. You will also need drill, because you have to make more than one hole. In order to easily process iron parts, it is necessary electric sharpener. It is key in the fitting process. In addition, it is desirable to have hand tools: files, needle files, bars, hammers, screwdrivers, rasps, lehrs with a set of taps, sledgehammers, vise, etc. The more tools at hand, the easier the manufacturing process will seem.

The more tools available, the easier and better the jack will turn out.

Lathe in any business is an excellent assistant, but not everyone has it. In principle, you can cope without it, but if you have such a unit in your garage or workshop, it will turn out much faster. After all, with the help of a milling machine, it is easy to carve or process any part. For example, a bolt or a rod. In general, your machine will be very handy.

It is also worth talking about the material. It can be bought at the market or at the scrap metal collection point. The second option is much cheaper, since all the metal is rusty and battered at scrap receptions. It is not suitable for operation, but as a donor, that's it. It is desirable, of course, to buy more of everything. Indeed, depending on what kind of jack you want, you may need additional mechanisms or fasteners that you cannot make yourself. Therefore, be prepared to purchase some components on the market.

The base (both the lifting arm and the lifting platform) of the hydraulic jack can be made from a channel. For lifting force, a conventional hydraulic bottle jack is used. To move the jack, you can attach wheels (can be replaced with bearings, rollers or something similar).

The device of a homemade hydraulic rolling jack

It is recommended to install a bottle jack on a movable swing platform, since during operation the jack slightly changes its angle, and some movement compensation is required. The platform should sway slightly from side to side. You can make it from the same channel by drilling a through hole in the lifting base and putting the "swing" on the bolt so that there is a small gap of 0.5-1 cm between the base and the platform.

Movable platform for bottle jack

To increase the strength of the structure, it is desirable to make braces of rods on both sides of the base. The thicker the rods, the better. They are welded to the base.

The device is powered by a bottle jack. When it is set in motion with a special rod handle, it rises, which moves the lifting lever up.

The process of operation of a homemade hydraulic rolling jack

A drawing of such a hydraulic jack for making it yourself is shown in the image below:

Do-it-yourself hydraulic rolling jack drawing

See also a few video where you can learn more about how to make a hydraulic jack with your own hands:

As an example, consider also a pneumatic device that easiest to do. So, you will need:

In principle, with such a home-made device, any car can already be easily lifted. It is enough to substitute the pneumatic cylinder under the platform on the bottom and connect the high pressure hose to the fitting. By supplying compressed air, the pillow will begin to rise with the machine.

The principle of operation of a homemade pneumatic jack

For convenience, such a jack can be completed by inventing a reliable platform with wheels for it. Thus, if the cylinder is taken for disassembly, then a home-made device comes out almost for a penny.

Improved air jack on wheels

You can also see some video how to make a pneumatic jack with your own hands:

The most important question remains. Is it worth it to make a jack yourself? The answers to it may be different, however, after weighing all the nuances, you can come to the final conclusion. To begin with, it is worth understanding the cost. It is clear that no one will buy a tool for manufacturing, however, you will need material and some parts that you still have to purchase. It is quite possible to buy a new factory jack for 5,000 rubles. Waste on homemade will depend on what kind and type it is. So, making a hydraulic one will be the most expensive, but the pneumatic one discussed above is the cheapest.

In general, the cost of a jack is not so big to rack your brains and make it yourself. If you don't care, then it's better not to take it on and buy a new one in the store. But, if the process itself is interesting, and you want to make something, then this is a great idea to test your skills. You may even be able to save 1-2 thousand rubles. That is, when there is a desire to do - try, be wiser and achieve results. But if the process of making a jack is not interesting to you, then it is better to postpone this matter.

The main thing to remember is safety measures. Any tool in inexperienced hands can cause serious injury. Remember to also wear protective goggles when working with metal and when welding to protect your eyes.

How to make a jack with your own hands: instructions with photos and videos

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