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Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester

A technology of hydraulic continuously variable transmission and drive axle assembly, which is applied in the direction of control devices, transportation and packaging, vehicle parts, etc., which can solve the problems of complex operation, high energy consumption, and large volume, and achieve the effect of simple operation and control

Active Publication Date: 2016-01-13
青岛科瑞特传动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This mechanical four-wheel drive axle assembly has the disadvantages of high failure rate, complex operation, large volume, heavy weight, and high energy consumption, and this mechanical four-wheel drive axle assembly cannot adapt to land with serious water accumulation and other needs. In the case of stronger driving capability, the market urgently needs a new type of two-speed four-wheel drive hydraulic continuously variable transmission drive axle assembly

Method used

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  • Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester
  • Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester
  • Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester

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Embodiment Construction

[0020] The patent of the present invention mainly provides the power input by the hydraulic variable pump 10, drives the hydraulic quantitative motor 9 to rotate at variable speeds, and selects the transition gear 18 and the harvesting gear 17 of the front axle assembly through the gear shifting sleeve 3 of the mechanical gearbox. , so that the front drive axle assembly drives the harvester to realize actions such as forward, backward, steering and continuously variable speed change. When the harvester requires the rear drive steering axle to be driven in parallel with the front axle, the switch is turned on to control the solenoid valve to switch to the four-wheel drive state, so that the left rear axle cycloidal motor 11 and the right rear axle cycloidal motor 12 are incorporated into the hydraulic system. When the harvester does not need four-wheel drive, the rear axle drive system can be cut off by a switch, and the rear axle cycloidal motors 11 and 12 are in the follow-up ...

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Abstract

The invention relates to a two-gear four-wheel hydraulic stepless variable speed drive axle assembly for a large harvester. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly comprises a hydraulic variable pump located on a front axle and used for driving a quantitative hydraulic motor. A quantitative motor output shaft is connected with a gearbox power input shaft. A gearbox power output shaft is connected with a wheel edge speed reducer input shaft through a differential mechanism assembly. A hydraulic brake assembly is arranged on a transmission shaft in the middle of a gearbox. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly is characterized in that the hydraulic variable pump is connected with the quantitative hydraulic motor through a front axle antiskid valve, the front axle antiskid valve is connected with a switch through an electromagnetic valve, and the hydraulic variable pump is connected with a cycloid motor of a rear axle through a four-drive control valve. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly is easy, reliable and timely to operate and control, the stepless speed change and reverse drive of two drive axle assemblies can be achieved, the hydraulic system is kept at certain working pressure, and therefore rear wheels of the harvester can still drive the whole harvester to walk.

Description

technical field [0001] The patent of the present invention relates to the technical field of drive axle assembly for large self-propelled grain combine harvesters and the technical field of hydrostatic pressure. Background technique [0002] In recent years, there has been a strong market demand for large self-propelled four-wheel drive grain combine harvesters. This type of large self-propelled grain combine harvester has been equipped with a traditional 1000 series mechanical front drive axle and a mechanical rear drive steering axle powered by the front drive axle. This mechanical four-wheel drive axle assembly has the disadvantages of high failure rate, complex operation, large volume, heavy weight, and high energy consumption, and this mechanical four-wheel drive axle assembly cannot adapt to land with serious water accumulation and other needs. In the case of stronger driving capability, the market is in urgent need of a new type of two-speed four-wheel drive hydrauli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/356
Inventor 沙德文罗振华费强海钱亮
Owner 青岛科瑞特传动科技有限公司
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