All about jacks with a load of 20 t

Jacks are a device not only for lifting and holding cars or heavy objects, but can also be used in other areas as an independent device or in a group with more complex mechanisms. They differ not only in design, principle of operation, but, of course, in carrying capacity.

Jacks with a lifting capacity of 20 tons designed to lift a car or other solid load. With their help, you can lift and move large blocks during the construction of structures, push through a pipe for a water supply in the ground, or use it for other purposes.

Such devices are made of thick and high-strength metal, have different sizes, their weight can reach 250 kg. Jacks with a lifting capacity of 20 tons are most often stationary - due to their weight, they cannot be carried in the trunk of a car.

There are several types of jacks.

Hydraulic the devices operate on liquid, differ in their design, can be single or double-plunger, and can also differ in the type of drive. The design of such options consists of a body, a piston and a working fluid. The guide cylinder is a housing with an oil reservoir. After pressing the drive handle, the force is transmitted through the lever to the pump. During the upward movement, oil enters the pump cavity. Due to the fact that the piston and cylinder have different diameters, the applied force is minimized. Oil under the piston pushes it out and lifts the weight underneath. Such devices have high efficiency, operate very smoothly, and have high structural rigidity.

Bottle devices have the same principle of operation as hydraulic ones, differ only in a more powerful design. They can work in all weather conditions, since the liquid in the cylinder is not subject to freezing. They are stable due to their vertical construction and wide support shape. They must only be used and stored in an upright position, otherwise oil may leak.

The most adapted and demanded are rolling jacks... They can be used in any conditions. Thanks to hydraulic operating principle they provide a smooth ride when lowering and lifting the load. Due to the peculiarities of the shape, they can lift the load from almost zero height, which is very convenient when working with cars that have a low stance. They are easy to use, but, like bottle counterparts, must be upright.

Rack jacks have one distinguishing feature - it is the bent end of the rail at 90 degrees. Thanks to this design, it is possible to lift the load even from the lowest point. Such devices can be used both vertically and horizontally.... This ability is in great demand, as it provides a more comfortable work. The principle of operation of such devices consists in the interaction of a rack and a ratchet mechanism. The body has a lifting arm and a load support. During the lifting of the load, the body moves along the toothed rack. The device is protected by a metal casing from dust and dirt. If a metal cable is connected to this type of jack, then the device can work on the principle of a winch.

Hook or double stage jacks have two pickups that are at different heights. Such mechanisms of the bottle type are two-level and combine two types, low-grip and bottle. A characteristic feature of such devices is a pick-up arm, which catches the load at the bottom edge.

Consider the range of 20 tonne jacks.

• Model of a bottle-type hydraulic jack "BelAvtoKomplekt" made of alloy steel with a special anti-corrosion coating. Designed for lifting loads up to 20 tons. The base plate is quite stable, cast from solid cast iron. Thanks to high-quality rubber seals, which provide good sealing, it is possible to transport this model in a horizontal position. The height of the approach is 215 mm, the propeller travel is 60 mm, the width of the support platform is 105 mm, and its length is 115 mm. For full operation of the device during long-term holding of the load in a hanging position, special stands must be used. The model is quite compact, weighing 7.5 kg.

• Rolling jack model "Sorokin" CrocoLine Jack 3.420 capable of lifting loads up to 20 tons. The model weighs 215 kg. It has a lifting height of 220 mm and a lifting height of 680 mm. The dimensions of the jack are 1430x560x280 mm. When working with such a device, it is necessary to use additional safety stands and rack shoes for more reliable fixation of the load. This device can only be used on a flat surface.

• Rack and pinion jack model "Prometheus" has a lifting capacity of up to 20 tons. The device can handle large loads, there is a folding handle, which contributes to more comfortable transportation of the device. The model has a protective system that prevents unauthorized movement of cargo. The device weighs 90 kg. The handle force is 800H.

• Hook jack "Sorokin 3.320" designed for lifting loads up to 20 tons. The minimum approach height is 25 mm and the maximum lift height is 322 mm. The weight of this model is 14 kg, and the dimensions are 300x240x200 mm. The maximum rise of the platform is 32.2 cm, and its dimensions are 22.8 by 27.4 cm.

To choose a jack with a lifting capacity of 20 tons, you must first of all decide on its type of constructionhaving considered all the advantages and disadvantages.

River jacks have the smallest footprint, but are great for handling loads that are very low. Convenient for company use with a metal cable for winch purposes. With such a device, you can easily drag the load from one place to another. The devices have the lowest cost and lightest weight in comparison with similar jacks of other design.

Bottle has an average level of cost, thanks to the wide support heel, it is quite stable, working with them does not require much physical effort. In such structures, it is necessary to periodically inspect. They are not suitable for lifting loads from low heights, over time the seal breaks down and oil leaks.

Rolling jacks have a huge variety and are considered the most stable, capable of lifting a load from a minimum pickup height. The design of such devices is quite rigid, thanks to which the load is distributed evenly over the entire surface. But they are the most expensive, very inconvenient for transportation, as they have large dimensions and weight.

Jacks are primarily used for repairing vehicles in order to hold their bodies or for changing wheels. And can also be used as separate mechanisms for construction purposes, for tensioning wires in electric mains and high-voltage lines. With their help, you can compress a spring, destroy floors in old buildings, move heavy parts or blocks, and use them to repair railways and wagons. The scope of their application is quite wide, which helps to facilitate human efforts.

An overview of the 20 t hydraulic bottle jack is presented below.