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Closed type hydraulic transmission system

A hydraulic transmission, closed type technology, applied in the field of transmission system, can solve the problems of vehicle driving resistance, large impact pressure of the motor casing, etc., and achieve the effects of small structure size, reduced additional load, and good adaptability to working conditions.

Inactive Publication Date: 2014-05-14
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the large impact pressure caused by the high-pressure oil on the housing of the motor when the existing state is switched in the prior art and when the hydraulic motor is not working, there is a certain pressure in the hydraulic transmission circuit, which will affect the vehicle. To solve the problem of resistance caused by driving, a closed hydraulic transmission system is provided

Method used

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  • Closed type hydraulic transmission system
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Embodiment Construction

[0029] The present invention is described in detail below in conjunction with accompanying drawing:

[0030] The object of the present invention is to provide a closed hydraulic transmission system, said closed hydraulic transmission system is mainly used in the auxiliary front wheel drive structure of target vehicles such as heavy trucks or heavy engineering transport vehicles, so as to improve the driving force of the vehicle. Driving force and passability when skidding;

[0031] The hydraulic control valve group in the closed hydraulic transmission system can adjust the different states of the hydraulic motor, reduce the pressure impact of the motor casing when the state is switched, and meet the requirements of the driver for shifting gears or short-term parking operations. , eliminate the additional load on the engine when the system is working, reduce the fuel consumption of the vehicle and improve the working life of the hydraulic motor.

[0032] refer to figure 1 , a...

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Abstract

The invention discloses a closed type hydraulic transmission system which solves the problem that impact pressure on a motor shell caused by high-pressure oil during status switching and a certain amount of pressure existing in a loop when a hydraulic motor does not work produce resistance on vehicle running. The closed type hydraulic transmission system comprises a power input mechanism, a hydraulic pump assembly, a hydraulic control valve set, a first hydraulic motor, a second hydraulic motor, a non-pressurization oil tank and a control unit. The power input mechanism is in mechanical connection with the hydraulic pump assembly which is in pipeline connection with the hydraulic control valve set, the hydraulic control valve set is in pipeline connection with the first hydraulic motor and the second hydraulic motor respectively, the first hydraulic motor is in mechanical connection with a load mass body of the first hydraulic motor, the second hydraulic motor is in mechanical connection with a load mass body of the second hydraulic motor, both the hydraulic pump assembly and the hydraulic control valve set are in pipeline connection with the non-pressurization oil tank, and the control unit is connected with the hydraulic pump assembly and the hydraulic control valve set through signal wires.

Description

technical field [0001] The invention relates to a transmission system applied to a heavy truck or a heavy engineering transport vehicle, more precisely, the invention relates to a closed hydraulic transmission system. Background technique [0002] At present, the operating conditions of heavy-duty trucks or engineering vehicles are relatively complex and changeable. They often drive on muddy, sandy or ice-snow and other low-adhesion roads, or when climbing long slopes, the driving wheel slips and the driving force is insufficient. . The methods to solve this problem mainly include all-wheel drive structure, electric wheel assisted front wheel drive structure and hydraulic assisted front wheel drive structure. The all-wheel drive structure is widely used in the field of off-road passenger vehicles, but its own mechanical transmission structure is complicated and adds a lot of mass, which is not suitable for engineering transportation vehicles such as heavy trucks or tractors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/17F15B13/06
Inventor 曾小华李相华宋大凤李高志李胜刘彬娜彭君朱志诚王广义陈顺潇
Owner JILIN UNIV
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