Negative motor hydraulic combined brake control system of bidirectional driving electric forklift

Abstract

The invention discloses a negative motor hydraulic combined brake control system of a bidirectional driving electric forklift. The negative motor hydraulic combined brake control system comprises an oil supply module, a brake module, an execution module, a pressure measuring module, a control module and a power supply module. The mode of the motor and the hydraulic brake valve is adopted, the whole vehicle controller collects brake pressure signals in real time, front-part-stroke electric braking and rear-part-stroke electro-hydraulic combined braking of the brake pedal are achieved, mechanical braking abrasion can be reduced, the service life of the brake is prolonged, the braking control performance of the coal mine trackless auxiliary transportation electric forklift and the running safety of the whole forklift are improved. A motor and hydraulic pressure combined control braking system is used, the cab has a bidirectional driving function, and the electric forklift can realize forward and backward bidirectional driving; and meanwhile, a mining high-power efficient inversion alternating-current variable-frequency speed regulation control technology and a distributed wheel-driven vehicle traction self-adaptive control technology are successfully used on the electric forklift, so that the diversification of various control modes can be realized.

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 coal mines, in particular to a negative motor hydraulic combined braking control system for a two-way driving electric forklift. Background technique [0002] Underground coal mine trackless auxiliary transportation equipment has been widely used due to its high efficiency, multi-purpose, flexible maneuverability and advanced technology, which can significantly improve the efficiency of auxiliary transportation and the productivity of all mine staff. [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 informationiza...

AI Technical Summary

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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