Jack used on various grounds

Abstract

The invention discloses a jack used on various grounds. The jack comprises a base, a supporting part, a hydraulic pump and a spanner. A sliding plate and a foot plate are arranged in the base, a plurality of first reset springs are arranged between the sliding plate and the foot plate, and a plurality of second reset springs are arranged between the sliding plate and the inner wall of the base. The sliding plate is provided with a first handle, a first positioning hole and a plurality of first supporting blocks, a positioning rod is connected into the first positioning hole, a plurality of second positioning holes are formed in a positioning part, and positioning rods are arranged in the second positioning holes. Each positioning rod is provided with a cone frustum, wherein the cone frustum is arranged above the positioning part, a protection cover is arranged on the positioning part, a hole is formed in the protection cover, and a positioning spring is arranged between the protection cover and the cone frustum. A plurality of supporting legs and a plurality of second supporting blocks are arranged on the foot plate. Compared with the prior art, the jack used on various grounds is simple in structure, low in manufacturing cost, capable of being used in some extreme environments of snowfields and grasslands and applicable to most working environments.

Description

technical field [0001] The invention belongs to the technical field of hydraulic jacks, and in particular relates to a jack used on multiple grounds. Background technique [0002] Jack is the simplest lifting equipment that a kind of lifting height is little. Jack is divided into mechanical jack and hydraulic jack two kinds, and principle has nothing in common with each other. In principle, the hydraulic jack is based on the principle of Pascal's principle, that is, the pressure of the liquid is the same everywhere, so that in a balanced system, the pressure exerted on the smaller piston is relatively small, while the pressure on the larger piston is relatively small. The applied pressure is also relatively high, which keeps the liquid still. Therefore, through the transmission of liquid, different pressures on different ends can be obtained, so that a transformation can be achieved. We common to whiskey jack be exactly to have utilized this principle to reach the transmi...

AI Technical Summary

Problems solved by technology

[0005] When using the jack on the grass, since the jack needs to be placed on the haystack, the jack is easy to slip under the force on the grass

Moreover, since the distance between the jack and the object to be lifted is not particularly large, it is quite inconvenient to use other props to knock the jack down and fix it

When the car breaks down in the snow, in the northern environment, where the snow is frozen, the jack will slip when placed on it, which is very unsafe

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