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An operation control method for tractor dual-flow transmission system

A control method and tractor technology, applied in transmission control, mechanical equipment, components with teeth, etc., can solve problems such as limited mechanical gears, increasing the complexity of the mechanical structure of the gearbox, and the inability to realize continuous stepless transmission. , to achieve the effect of improving productivity and alleviating operational fatigue

Active Publication Date: 2020-06-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional stepped multi-speed gearbox can meet certain requirements through shifting gears, the mechanical gears are limited and continuous stepless transmission cannot be realized. If more gears are added, the mechanical structure of the gearbox will be more complicated

Method used

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  • An operation control method for tractor dual-flow transmission system

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Embodiment 1

[0038] see figure 1 , the present embodiment is a parallel dual-flow variable speed transmission device, including a variable speed transmission system TR and a hydraulic control system HC, wherein the variable speed transmission system TR is provided with a first power input variable speed transmission unit DT1, a second power input variable speed transmission unit DT2 And the power output unit DT0; the hydraulic control system HC is equipped with the first solenoid valve EV1, the second solenoid valve EV2, the third solenoid valve EV3, the fourth solenoid valve EV4, the manual valve SKF, the first one-way valve DX1, the Second one-way valve DX2, third one-way valve DX3, hydraulic cylinder YG and accumulator XN.

[0039] When this embodiment is in use, it is assumed that the tractor equipped with this type of transmission is in the second gear purely mechanical transmission mode for harvesting operations. When encountering a downhill section, the driving resistance of the tr...

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Abstract

The invention discloses a working controlling method for a dual-flowing transmission system of a tractor. The controlling method comprises the following steps: acquiring acceleration of the tractor during working and judging working conditions of the tractor according to the acquired acceleration, wherein the working conditions of the tractor comprise steady-state working conditions and non-steady-state working conditions; using a pure mechanical transmission mode if a judgement result is the steady-state working conditions, and judging the change trend of working resistance through the acceleration under the non-steady-state working conditions if the judgement result is the non-steady-state working conditions; and adjusting the mechanical hydraulic dual-flowing transmission system according to the change trend of the working resistance under the non-steady-state working conditions. The working controlling method disclosed by the invention has the beneficial effects that different working modes and controlling methods are set according to the different working conditions, a speed ratio of a speed changer is quickly and automatically adjusted according to the resistance change situations happening during working of the tractor so as to adapt to the change of load, so that the operation fatigue of a driver is effectively alleviated, and the production efficiency of the tractor isimproved.

Description

technical field [0001] The invention relates to the field of vehicle speed change control research and design, in particular to an operation control method for a tractor dual-flow transmission system. Background technique [0002] Tractor is an important tool in agricultural production, its operating environment is complex, and the external load fluctuates frequently. The complex and changeable working environment requires the engine or gearbox to adjust the speed and torque in a timely manner to adapt to the constant changes in load and driving resistance, so as to ensure the power and economy of the tractor. Although the traditional stepped multi-speed gearbox can meet certain requirements through gear shifting, the mechanical gears are limited and continuous stepless transmission cannot be realized. If more gears are added, the mechanical structure of the gearbox will be more complicated. The hydraulic-mechanical continuously variable transmission can adjust its working ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/44F16H59/48F16H61/00
CPCF16H59/44F16H59/48F16H61/0025F16H2061/0034
Inventor 夏光高军张洋杨猛滑杨莹郭东云闫瑞琦郑友陈杰峰侯郭顺汪韶杰孙保群
Owner HEFEI UNIV OF TECH
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