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Pneumati-hydraulic automatic jack

A hydraulic jack, pneumatic hydraulic technology, applied in the direction of lifting device, can solve the problems of complex structure, not easy to carry, complex operation of the jack, and achieve the effects of light weight, easy portability and simple operation

Inactive Publication Date: 2006-11-29
方红涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So using such a jack, the operation is complicated and the efficiency is low
In addition, the jack has complex structure, high cost, heavy, and is not easy to carry

Method used

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  • Pneumati-hydraulic automatic jack
  • Pneumati-hydraulic automatic jack

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] This pneumatic hydraulic automatic jack comprises a hydraulic jack and a pneumatic oil pumping device for pumping oil to the hydraulic jack, wherein the pneumatic oil pumping device consists of a cylinder 25, a pressure oil cylinder 14, a piston rod of a piston placed in the cylinder 25, and a front end. The piston rod 28 for pumping oil in the oil pressure cylinder 14, the oil outlet port 15 of the oil pressure cylinder is connected with the oil inlet port 17 of the hydraulic cylinder of the hydraulic jack, and the pneumatic oil pump device is also provided with an automatic circulation mechanism. The movable valve 6 of the channel 1 that can block the intake channel 1, the movable valve 6 is fixedly connected with a movable valve spring 8; the intake channel 1 is provided with a switching piston that can make the intake channel 1 on and off in front of the movable v...

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PUM

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Abstract

A pneumatic-hydraulic automatic jack is composed of a hydraulic jack and a pneumatic oil pumping unit which has an oil compressing cylinder with oil outlet connected to oil inlet of said hydraulic jack and an automatic circulating system consisting of a movable valve in the air inlet channel of cylinder and its spring, switching cylinder with piston, piston rod, restoring spring for piston, and limiting ball and its spring.

Description

technical field [0001] The invention relates to a jack, in particular to a pneumatic hydraulic automatic jack. Background technique [0002] The pneumatic hydraulic jack uses an air pump to input compressed gas when inflating, and pushes the piston in the cylinder to press the oil of the hydraulic jack into the hydraulic cylinder, and then pushes the jack to lift the object. Such as the pneumatic hydraulic jack announced by the patent application number CN89220468, when the air pump inputs high-pressure gas, it cannot be continuously input. After the compressed gas is input to push the piston, the input must be stopped first, and the direction of the solenoid valve will be reversed, and the compressed gas will be transported elsewhere. After the piston returns to its original position due to the action of the piston, the compressed gas is input again, and it goes back and forth until the object is lifted. So using such a jack, the operation is complicated and the efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F3/24
Inventor 方红涛
Owner 方红涛
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