Electric-hydraulic double-control hydraulic system and method for vehicle-mounted drilling machine

Abstract

The invention discloses an electric-hydraulic double-control hydraulic system and method, belongs to the field of coalbed methane mining, and particularly relates an electric-hydraulic double-control hydraulic system and method for a vehicle-mounted drilling machine. Proportional control over the running speed of an executing mechanism can be achieved through a hydraulic-control multi-way valve, the double-control type hydraulic control system is composed of a hydraulic pilot control valve, a shuttle valve and an electric proportional pressure reducing overflow valve, and the flow of hydraulic oil of the multi-way valve can be manually or automatically controlled. The electric-hydraulic double-control hydraulic system can be manually or electrically controlled, an electric control system can be used for controlling the executing mechanism of the vehicle-mounted drilling machine so that the requirement for automatic and remote control of the vehicle-mounted drilling machine can be conveniently met; and in addition, when the electric control system breaks down, manual operation can be conveniently and rapidly achieved, and therefore drilling accidents or safety accidents caused by the situation that the executing mechanism stops working are avoided.

Description

technical field [0001] The invention relates to an electro-hydraulic dual-control hydraulic system and method, which belong to the field of coalbed methane mining, and in particular to an electro-hydraulic dual-control hydraulic system and method for a vehicle-mounted drilling rig. Background technique [0002] Vehicle-mounted drilling rigs are mainly used in coalbed methane mining and mine drilling rescue, which requires the vehicle-mounted drilling rig to have the characteristics of high efficiency, reliability, and high safety. Hydraulic pilot control is widely used in the hydraulic system design of drilling rigs because it can control the work of large flow valves remotely with small flow and pressure, and the control system layout is flexible and convenient. With the development of electro-hydraulic proportional control technology, electro-hydraulic proportional control technology is widely used in the field of construction machinery, which provides a reference for the ...

AI Technical Summary

Problems solved by technology

Although some hydraulic system supporting manufacturers have introduced manual and electric proportional dual-control hydraulic multi-way valves, since the large-flow multi-way valves of vehicle-mounted drilling rigs are generally arranged on the chassis of the vehicle body and are far away from the console, when the electronic control system fails , It is extremely inconvenient to manually operate the multi-way valve, and it is difficult to observe the working status of each actuator

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