Steering electrohydraulic control system for remote control loading machine

Abstract

The invention relates to a steering electrohydraulic control system for a remote control loading machine. The steering electrohydraulic control system for the remote control loading machine comprises an oil tank, a steering metering pump, a pilot pump, a solenoid directional valve, a three-way pressure compensator, an overflow valve, a throttling valve, a shuttle valve, two hydraulic directional valves, two three-way solenoid proportional reducing valves and two steering oil cylinders. An inlet of the steering metering pump is connected with an oil outlet of the oil tank, the outlet of the steering metering pump is connected with a first oil inlet of the first hydraulic directional valve, the first hydraulic directional valve is respectively connected with the three-way pressure compensator and the two three-way solenoid proportional reducing valves, and the two three-way solenoid proportional reducing valves are connected with the second hydraulic directional valve, the shuttle valve and the two steering oil cylinders in sequence. The steering electrohydraulic control system for the remote control loading machine is stable in steering and free of impact and clamping stagnation phenomena, reduces the heat emitting amount and reduces waste of power of an engine, and thus the purposes of reducing oil consumption and saving energy are achieved finally.

Description

technical field [0001] The invention relates to a steering electro-hydraulic control system, in particular to a steering electro-hydraulic control system for a remote loader. Background technique [0002] The remote control loader is mainly used to carry out continuous operations in some extremely harsh and dangerous environments. The operator does not need to stay in the cab, but controls the loader through a wireless remote control in a safe area far away from the operating point, so as to ensure the personal safety of the operator. and physical and mental health. Extremely harsh and dangerous environments such as: garbage cleaning, slag cleaning under the blast furnace, toxic gas waste gas occasions, tunnel excavation, subway construction, mining cave operations, emergency rescue, demolition of dilapidated houses, explosion-proof operations, radioactive operations, etc. [0003] There are too few existing remote control loader products, and there are not many companies t...

AI Technical Summary

Problems solved by technology

It is relatively easy to realize the remote control transformation of the flow amplification steering system, but it is difficult to realize the remote control transformation of the load sensing steering system. At present, there is no good solution. Not smooth enough, and the heat generated by the steering hydraulic control system is too high, and the temperature of the hydraulic oil is too high, which will lead to increased wear of the steering cylinder, slow movement, oil leakage in the steering hydraulic system, and accelerated aging of rubber seals, etc.

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