Reciprocating hydraulic driving device

Abstract

The invention discloses a reciprocating hydraulic driving device. The reciprocating hydraulic driving device comprises a hydraulic cylinder body and a hydraulic piston, and further comprises a pistonrod, wherein one end of the piston rod is positioned in the hydraulic cylinder body and connected with the hydraulic piston, and the other end of the piston rod extends out of the hydraulic cylinder body; the hydraulic cylinder body is provided with a first oil injection port and a second oil injection port; the hydraulic piston is arranged between the two oil injection ports, and the hydraulic cylinder body is divided into a first oil injection cavity and a second oil injection cavity; the hydraulic driving device further comprises a flow distribution mechanism; and the flow distribution mechanism comprises a flow distribution block arranged in the first oil injection cavity and capable of generating axial reciprocating motion, and a driving mechanism matched with the piston rod and usedfor driving the flow distribution block. The reciprocating hydraulic driving device has simple structure, low failure rate and convenient maintenance; the device is light in weight, small in size, convenient to manually hold and convenient to move during underground operation of a coal mine; and the problems of complex integral system, high failure rates, large size, inconvenience in moving undera mine and the like existing in the prior art such as existing pneumatic and reciprocating hydraulic driving devices can be solved.

Description

Technical field [0001] The invention relates to the field of borehole sealing grouting pumps in underground coal mines, in particular to a reciprocating hydraulic drive device. Background technique [0002] Construction drilling is a necessary method to detect the geological structure, the occurrence of coal seams, and solve the mine gas, water, roof and floor disasters. Grouting and sealing of boreholes is also an indispensable step. At present, the commonly used equipment for grouting and sealing of boreholes in mines is a pneumatic grouting pump. The pneumatic grouting pump mainly uses the compressed air in the well to push the cylinder piston to reciprocate in the cylinder, and the cylinder piston drives the grouting piston to reciprocate to realize the action of sucking in the slurry and grouting. However, the existing pneumatic grouting pump will cause the grouting pressure to be limited when the compressed air power in the well is insufficient. Therefore, it is often nece...

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Problems solved by technology

[0003] In view of this, the present invention provides a reciprocating hydraulic drive device, which can be used for hydraulic grouting pumps for hole sealing or other devices that require hydraulic drive functions. It has a simple structure, low cost, low failure rate, and is easy to maintain; It is small in size, convenient for manual support, and easy to move in coal mines; it can solve the problems of existing technologies such as pneumatic grouting pumps and reciprocating hydraulic drive devices, such as overall system complexity, high failure rate, bulky body, and inconvenience in moving underground And other issues

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