A single-pump hydraulic system for a coal mine tunnel drilling machine

Abstract

The utility model discloses a kind of single-pump hydraulic systems of coal mine with tunnel drilling machine, including by motor-driven main oil pump, low-pressure oil is inhaled by main oil pump through oil filter, high-pressure oil output by main oil pump enters main valve, main valve is distributed two-way hydraulic oil system distribution: one-way hydraulic oil system passes through main valve and enters walking valve and eight joint valve, walking valve controls hydraulic oil flow direction walking motor, one-way hydraulic oil system passes through main valve and enters drilling integrated linkage module, and two-way hydraulic oil system is in alternate form, interlock is formed, drilling integrated linkage module includes five joint linkage module, from left to right direction is in order as first joint linkage module is used to control the liquid oil pressure flow direction of main oil pump, whole hydraulic system has the function of energy saving, motor protection, protection hydraulic system.Single pump use improves motor power, avoids oil pipe oil leakage problem, improves whole machine maintenance and maintenance efficiency, realizes the performance stability, simple and safe of hydraulic system.

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