A hydraulic transmission system that allows energy recovery

Abstract

The invention discloses a hydraulic transmission system enabling energy recovery. The hydraulic transmission system aims to solve the problems that driving ability and passing performance of a target vehicle are not enough when driving wheels slide in the prior art. The hydraulic transmission system comprises a power input mechanism, a hydraulic pump assembly, a control valve group, an energy accumulator, a first hydraulic motor, a load mass body of the first hydraulic motor, a second hydraulic motor, a load mass body of the second hydraulic motor, an oil tank and a control unit. The power input mechanism is mechanically connected with the hydraulic pump assembly, the hydraulic pump assembly is connected with the control valve group through a pipeline, the control valve group is sequentially connected with the first hydraulic motor and the second hydraulic motor through a pipeline, the first hydraulic motor is mechanically connected with the load mass body of the first hydraulic motor, the second hydraulic motor is mechanically connected with the load mass body of the second hydraulic motor, the hydraulic pump assembly and the control valve group are respectively connected with the oil tank through a pipeline, and the hydraulic pump assembly and the hydraulic control valve group are respectively connected with the control unit through a signal line.

Description

Technical field [0001] The invention relates to a device belonging to the field of hydraulic transmission. More specifically, the invention relates to a hydraulic transmission system that allows energy recovery for heavy engineering transportation vehicles. Background technique [0002] The working conditions of heavy engineering transport vehicles are more complex and changeable, and they often run on low-attachment roads or climb long slopes, causing slipping of the driving wheels and insufficient driving force. The solution to this problem is to assist the front-wheel drive structure, and the hydraulic transmission system has the characteristics of simple structure, high specific power, low modification cost, and mature technology development. It is commonly used in the field of engineering vehicles. At the same time, the radial plunger hydraulic motor It is small in size and can be installed in the hub of the front wheel. It does not take up space but also has the characteris...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem of insufficient driving ability and passing performance of the target vehicle when the driving wheel slips in the prior art; at the same time, it solves the problems of braking energy loss and brake temperature rise when the target vehicle frequently brakes in the prior art. The problem of reduced dynamic capacity provides a hydraulic transmission system that allows energy recovery

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