Mechanism for realizing automatic reversing through a distributing slide valve

Abstract

The invention discloses a mechanism for realizing automatic reversing through a distributing slide valve, belongs to the technical field of oil cylinder automatic reversing, and aims to solve the technical problem by providing the mechanism for realizing automatic reversing through the distributing slide valve by adopting variant control and utilizing a crank and connecting rod mechanism to make the reciprocating movement into the rotating movement of a crank, so as to drive cams to rotate and enable the cams to drive reversing valves to reverse, as a result the reciprocating movement of each hydraulic cylinder piston is controlled and a dead point is prevented from being produced. The mechanism for realizing automatic reversing through the distributing slide valve adopts the technical scheme for solving the technical problem that the piston rods of cylinders A and B are connected with the connecting rods of crank and connecting rod mechanisms A and B; the ends of cranks of the crank and connecting rod mechanisms A and B are provided with a first cam and a second cam respectively; the working ports of the reversing valves A and B are communicated with the cavity I and the cavity II of the cylinder B and the cylinder A through emulsion pipelines. The mechanism for realizing automatic reversing through the distributing slide valve can be widely applied to the field of oil cylinder automatic reversing.

Description

technical field [0001] The invention uses a flow distribution slide valve to realize automatic reversing mechanism, and belongs to the technical field of automatic reversing of oil cylinders. Background technique [0002] China is a large coal-producing country, a country that relies heavily on coal energy, and is also a country with a large number of mining disasters. The main causes of mining disasters are man-made reasons such as illegal mining of coal mines, production errors, equipment aging and malfunctions. [0003] When coal mines are mined underground, due to the possibility of gas leakage during the mining process, the gas mixes with air, oxidizes rapidly at high temperature, and forms a shock wave phenomenon. China's coal mine gas explosions are mainly electric sparks and blasting, and the main place is the mining face , the instantaneous temperature generated by the gas explosion is high, the pressure expands quickly, and the gas near the explosion element impact...

AI Technical Summary

Problems solved by technology

In addition, the smooth operation of the hydraulic equipment on the positioning machine is also an important indicator of the working performance of the positioning machine. At present, the automatic control system of the hydraulic system of the positioning machine has large pulses and poor stability, which seriously affects the working performance of the positioning machine

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