Jack

Abstract

The invention discloses a jack, which comprises a top bar and a base, wherein the lower end of the top bar is rotationally supported on a support position at lower portion of the base, the upper end of the top bar is provided with an arc support base of which the upper portion is provided with an upper limiter. When the top bar rotates the position limited by the upper limiter, the connecting linebetween the support point on the support base and the support position of the base is cornered more than 90 degrees with horizontal plane. The invention has high jack speed, high reliability, low cost, long service life, and wide application for jacking various vehicles.

Description

technical field [0001] The invention relates to a rotating jacking device, in particular to a jack that realizes jacking through lateral thrust. Background technique [0002] The existing jacks are generally hydraulically driven to vertically lift the jack. During the jacking process, manpower is required to repeatedly lift and push down the hand. For the jacking of large vehicles, more manpower is required, and the jacking speed is also very fast. Slow, generally takes at least a few minutes to complete. In addition, during the jacking process, because the angle between the car beam and the ground will change, the contact surface between the top rod and the beam will also change, which is prone to slippage and other phenomena, and there are many unsafe factors during use. The existing hydraulic jack has a relatively complex hydraulic mechanism, requires good sealing reliability, and is not easy to wear, resulting in a relatively short service life, generally a few months. ...

AI Technical Summary

Problems solved by technology

[0002] Existing jacks generally use a hydraulically driven ejector rod to go up vertically. During the jacking process, manpower is required to repeatedly lift and press down the handle. For jacking of large vehicles, more manpower is needed, and the jacking speed is also very fast. Slow, typically takes at least a few minutes to complete

In addition, during the jacking process, since the angle between the vehicle beam and the ground will change, the contact surface between the ejector rod and the beam will also change, which is prone to slipping and other phenomena, and there are many unsafe factors in the use process.

Existing hydraulic jacks, the hydraulic mechanism is relatively complex, requiring good sealing reliability, and not easy to wear, resulting in a relatively short service life, generally several months

In addition, there are also some electro-hydraulic jacks. Although they do not need manpower to lift, the cost of the product is greatly increased, and energy consumption is also required during use.

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