Full-hydraulic brake system for electric forklift

Abstract

The invention discloses a full-hydraulic brake system for an electric forklift. The system comprises a hydraulic oil tank and an oil pump. An oil outlet of the oil pump is communicated with a port P of a brake charging valve, a port ACC of the brake charging valve is communicated with a port P1 of a power brake valve, a PBR port is communicated with a parking brake, a port T is communicated with the hydraulic oil tank, and a COOL port is communicated with a wet type drive axle through a radiator; a port P3 of the drive axle is communicated with the radiator, a port P2 is communicated with a port F of the power brake, a port T2 is communicated with the hydraulic oil tank, and the power brake valve is connected with a brake pedal of the electric forklift. The problem that in the prior art, abrake system of an existing large-tonnage electric forklift is not high in reliability and driving safety is solved, the brake reliability and driving safety of the electric forklift are remarkably improved, and the high practical value is achieved.

Description

technical field [0001] The invention relates to the technical field of forklift braking, in particular to a full hydraulic braking system for large-tonnage electric forklifts. Background technique [0002] For large-tonnage electric (battery) forklifts, due to the impact of the electric forklift's own battery and its heavy weight after full load, in order to ensure the safety of electric forklifts, it is necessary to provide an independent, safe and reliable braking system. In addition, large-tonnage electric forklifts will generate a large braking torque when braking, so the wet drive axle brake will generate a lot of heat, which greatly reduces the reliability of electric forklift braking. On the other hand, the safety of the brake system of the electric forklift in the prior art is not high, the driver cannot know the working state of the brake system in time, and cannot deal with the problems in the brake system in time, which greatly reduces the electric forklift. Fork...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low reliability of the braking system existing in the large tonnage electric forklift in the prior art, and provide a full hydraulic braking system for the electric forklift, which can effectively solve the problem of the large tonnage electric forklift in the prior art. Due to the heavy weight after full load, the braking torque is large and the braking heat is large, which reduces the reliability of the braking system, which greatly improves the braking reliability of electric forklifts.

[0004] Another object of the present invention is to provide a full hydraulic braking system for electric forklifts to solve the problem of low safety of the braking system of the electric forklift in the prior art, which can effectively solve the problem of the driver of the electric forklift in the prior art. The working status of the braking system cannot be understood in time, and the problems in the braking system cannot be dealt with in a timely manner, which leads to the problem of low driving safety of electric forklifts, which significantly improves the driving safety of electric forklifts

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