A mechanical-hydraulic co-drive continuously variable transmission for high-horsepower tractors
A technology of continuously variable transmissions and tractors, which is applied in the direction of mechanical equipment, fluid transmission devices, belts/chains/gears, etc., and can solve the problem that it is difficult to achieve the fuel economy or power matching between the gearbox and the engine, and the speed can only be stepped Changes, small range of speed changes, etc., to achieve the effects of increased service life, easy operation, and reduced labor intensity
Active Publication Date: 2018-04-17
南京创力传动机械有限公司
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Problems solved by technology
[0002] Tractor is an important agricultural production machinery with many working gears. The traditional tractor gear shifting process is completely borne by the driver, which is not only labor-intensive, but the speed change range is small and the speed can only be changed in steps. There is a bumpy feeling when shifting gears, and it is not easy to achieve the best fuel economy or power matching between the gearbox and the engine, thus wasting energy
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[0024] The present invention will be further described below in conjunction with accompanying drawing.
[0025] Such as figure 1 As shown, a mechanical-hydraulic cooperative drive continuously variable transmission includes a power input system 100, a hydraulic power transmission system 200, a mechanical power transmission system 300, and a power output system 400, wherein the engine is directly connected to the PTO output shaft 103, and the transmission main gear 102 is engaged with the first transmission pinion 201 and the second transmission pinion 301 respectively, and transmits the engine power to the hydraulic power transmission system 200 and the mechanical power transmission system 300;
[0026] The hydraulic power that further enters the hydraulic power transmission system 200 is transmitted to the hydraulic flow input shaft 207 through the hydraulic transmission main gear 209 and the hydraulic transmission pinion gear 210, and the hydraulic power transmitted to the h...
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The invention discloses a hydraulic mechanical continuously variable transmission, comprising a mechanical transmission system and a hydraulic transmission system. The hydraulic transmission system comprises a variable displacement pump, a constant displacement motor and a hydraulic flow input shaft, the constant displacement motor is connected with the variable displacement pump through an oil pipe, the mechanical transmission system comprises a PTO (power takeoff) input shaft, a mechanical flow input shaft, an output shaft and a planet gear mechanism; one end of the PTO output shaft is connected with an engine, the PTO output shaft is connected with a pump input shaft and the mechanical flow input shaft through gear pair meshing, the mechanical flow input shaft is provided with a first cutch and a first planet row, the hydraulic flow input shaft is provided with a second clutch and a second planet row, the first planet row is connected with the second planet row, and the output shaft is provided with a third clutch, a fourth clutch, a fifth clutch and a sixth clutch. This transmission may shift gears automatically with uninterrupted power during shifting and enables a tractor to stably run.
Description
technical field [0001] The invention relates to a gearbox, in particular to a mechanical-hydraulic co-driven stepless gearbox suitable for a dual-purpose 100-horsepower tractor in paddy and dry fields, and belongs to the technical field of vehicle system dynamics and control. Background technique [0002] Tractor is an important agricultural production machinery with many working gears. The traditional tractor gear shifting process is completely borne by the driver, which is not only labor-intensive, but the speed change range is small and the speed can only be changed in steps. There is a bumpy feeling when shifting gears, and it is not easy to achieve the best fuel economy or power matching between the gearbox and the engine, thus wasting energy. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide a hydromechanical continuously variable transmission that can simultaneously ...
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IPC IPC(8): F16H47/04
CPCF16H47/04
Inventor 肖茂华王成飞张海军李禹桥李鲜花王月文鲁植雄
Owner 南京创力传动机械有限公司