A Two-way Driving Electric Forklift Negative Motor Hydraulic Combined Braking Control System

Abstract

The invention discloses a two-way driving electric forklift negative motor hydraulic combined braking control system, comprising an oil supply module, a braking module, an execution module, a pressure measurement module, a control module and a power supply module. The invention adopts the method of motor + hydraulic brake valve, the vehicle controller collects the brake pressure signal in real time, realizes the electric braking of the front part of the brake pedal stroke, and the electric-hydraulic combined braking of the rear part of the stroke, which can reduce the wear of the mechanical brake , Improve the service life of the brake, improve the braking control performance of the electric forklift for the trackless auxiliary transportation of coal mines and the safety of the whole vehicle operation. The invention uses the motor and the hydraulic pressure to jointly control the braking system, the cab has a bidirectional driving function, and the electric forklift can realize the front and rear bidirectional driving; The traction adaptive control technology of the driving vehicle has been successfully used in the electric forklift, which is more conducive to the realization of the diversification of various control methods.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and relates to the braking control of an electric forklift for trackless auxiliary transportation in a coal mine, in particular to a hydraulic combined braking control system for a negative motor of a two-way driving electric forklift. Background technique [0002] The trackless auxiliary transportation equipment in coal mines has been widely used due to its high efficiency, multi-purpose, flexibility and advanced technology, which can significantly improve the efficiency of auxiliary transportation and the production efficiency of all mine staff. [0003] The main problems existing in the current trackless auxiliary transportation system are: 1. The demand for materials in underground coal mines is complex, the transportation workload is large, and the transportation work is highly random. The material distribution process is mainly mechanized system, with a low degree of automation and infor...

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Problems solved by technology

[0003] The main problems existing in the current trackless auxiliary transportation system are: ① The demand for underground materials in coal mines is complex, the transportation workload is large, and the transportation work is highly random. The material distribution process is mainly mechanized, and the degree of automation and informationization is low. Intelligent modern logistics standards; ②Underground transportation equipment is mainly powered by explosion-proof diesel engines, the system consumes high energy consumption, and vehicle exhaust and noise pollution are serious, which seriously threatens the physical and mental health of relevant employees; ③Auxiliary transportation equipment is subject to underground explosion-proof requirements. The degree of electrification and informatization is generally low, mainly mechanical and hydraulic systems, with complicated systems, many links, dense pipelines, low reliability, and large maintenance; ④The main transportation equipment is mainly driven by drivers and dispatched manually. The degree of automation is low, and it is difficult to realize the requirement of less people

The brake control system refers to the assembly of all components that brake or keep in place. It is an important guarantee for the safe operation of the trackless auxiliary transport electric forklift in coal mines. Once the braking control system of the electric forklift for trackless auxiliary transport in coal mines fails, Often cause serious coal mine accidents and property damage

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