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Mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure

A technology of hydraulic medium and hydraulic cylinder, applied in the hydraulic field, can solve the problems of increasing manufacturing cost, increasing corrosion, complicated process, etc., and achieving the effect of low cost and delaying corrosion.

Inactive Publication Date: 2015-11-11
SANY HEAVY EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technology prevents or delays the corrosion of the hydraulic cylinder to a certain extent, the above technology is complicated and increases the manufacturing cost; moreover, the emulsion will greatly increase the possibility of corrosion after long-term use

Method used

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  • Mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure
  • Mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure

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Embodiment Construction

[0021] In order to clearly illustrate the technical features of the solution of the present invention, the present invention will be described below in conjunction with specific embodiments and accompanying drawings.

[0022] Such as figure 1 As shown, the hydraulic cylinder of the prior art includes a cylinder body 2, a piston 3 located in the cylinder body 2, and a piston rod that is integrated with the piston 3 and extends out of the cylinder body 2, and the space in the cylinder body 2 is divided by the piston 3. Rod cavity part and rod cavity part. The rodless cavity safety valve interface 1 and the rodless cavity control liquid interface 8 are provided in the rodless cavity part, the safety valve (not shown in the figure) is connected with the rodless cavity part through the rodless cavity safety valve interface 1, and the liquid supply pipe The road is connected to the rodless chamber part through the rodless chamber control fluid interface; similarly, the rod chamber ...

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Abstract

The invention relates to a mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure. The hydraulic cylinder is provided with a cylinder body (2), a piston (3) located in the cylinder body (2) and a piston rod, wherein the piston rod is connected with the piston (3) into a whole and stretches out of the cylinder body (2). The space inside the cylinder body (2) is divided into a rodless cavity part and a rod cavity part. The rodless cavity part is provided with a rodless cavity control liquid connector (8), and the rod cavity part is provided with a rod cavity control liquid connector (7). A liquid supply pipeline is connected with the rod cavity part through the rod cavity control liquid connector. The piston rod is further provided with a rodless cavity liquid discharge port (5) communicated with a rodless cavity, and a rod cavity liquid discharge port (6) communicated with a rod cavity. The invention further provides a replacement method for a hydraulic medium of the hydraulic cylinder. By means of the technical scheme, working media in the rod cavity part and the rodless cavity part can be replaced under pressure, the purpose of replacing stagnant water in the hydraulic cylinder is achieved, and thus corrosion of the hydraulic cylinder is prevented or slowed down.

Description

technical field [0001] The invention relates to the field of hydraulic pressure, in particular to a mining pressurized hydraulic medium displacement hydraulic cylinder. Background technique [0002] The pillar of the underground mining face is one of the essential equipment in the mine. The support equipment used in mines in my country has various structural forms such as wooden pillars, single metal friction pillars, single hydraulic pillars and double telescopic suspension pillars. . In recent years, with the continuous development, research and practice of engineers and technicians, the support technology has been greatly developed and gradually perfected. Wooden pillars are rarely used. Single metal friction pillars have small initial Uneven, constant increase in resistance and drop distance can not be guaranteed without it. The single hydraulic prop is a new generation of product developed after the single metal friction prop. It has been popularized and applied for mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F16J7/00
CPCF15B15/1423F15B15/1428F15B15/1457
Inventor 于洋尚心志李福
Owner SANY HEAVY EQUIP
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