Lifting control structure and mining dump truck

Abstract

The invention discloses a lifting control structure and a mining dump truck, and belongs to the field of machine manufacturing. The lifting control structure comprises an input unit, a calculation and logical judgment unit, an output unit and an execution unit which are connected in order, wherein the input unit comprises a plurality of button switches, the calculation and logical judgment unit comprises a controller 1, the output unit comprises a plurality of proportional solenoid valves, and the execution unit comprises a lifting cylinder 2; and the plurality of the button switches comprise a lifting switch 3 and a lowering switch 4, and the plurality of the proportional solenoid valves comprise a lifting proportional valve 5 and a lowering proportional valve 6 which are respectively connected with the lifting switch 3 and the lowering switch 4 through the controller 1. The lifting control structure is characterized in that the button switches with simple structure and low cost are used for replacing operating handles and are combined with the proportional solenoid valves to control the action of the lifting cylinder, so that the intelligence is improved and the cost can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of mechanical equipment control, and relates to a lifting control, in particular to a lifting control structure and a mining dump truck. Background technique [0002] One of the main functions of mining dump trucks is to transport materials (such as coal, soil, stones, etc.). With the continuous development of technology, more and more users are more concerned about its intelligence, cost, reliability and safety. [0003] The traditional lifting control method of the existing mining dump truck is to use the expensive and complex operating handle as the control input device, and the controller controls the ordinary solenoid valve to realize the simple lifting, lowering, floating and maintaining functions; Or a limit switch will be added to indicate whether the carriage is raised or lowered in place. This control method is a full manual control method, which cannot effectively prevent or reduce the collision between th...

AI Technical Summary

Problems solved by technology

[0003] The traditional lifting control method of the existing mining dump truck is to use the expensive and complex operating handle as the control input device, and the controller controls the ordinary solenoid valve to realize the simple lifting, lowering, floating and maintaining functions; Or a limit switch will be added to indicate whether the car is lifted or lowered in place

This control method is a full manual control method, which cannot effectively prevent or reduce the collision between the carriage and the frame, nor can it provide real-time feedback on the status of the carriage and the operating handle, and cannot meet the growing demand for intelligence.

[0004] Some lifting control devices of mining dump trucks in the prior art use the handle to realize the movement of the carriage, which needs to improve the accuracy of the analog signal output of the handle as much as possible and prevent misoperation through complex mechanical structures, thus sacrificing cost to improve operational performance

At the same time, there is no operation feedback, only a simple limit switch is used to detect the position of the carriage and limit the movement of the carriage

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