Novel reverse engaging gear shifting system

Abstract

The invention provides a novel reverse engaging gear shifting system comprising a driving gear and gear stage gears matched with the driving gear, the driving gear and the gear stage gears are arranged on a same transmission shaft in a sleeving mode, and the driving gear and the transmission shaft rotate synchronously. The driving gear can move in the axial direction of the transmission shaft under the action of external force and can be engaged with and separated from the gear stage gears, and the gear stage gears are connected with the transmission shaft in a sliding mode. According to the technical scheme, different from a traditional gear shifting mode, the driving gear and the gear shifting gears are located on the same transmission shaft, the driving gear and the gear shifting gears are engaged in a side face engaging mode, and the gear is provided with the oblique notches facilitating smooth entering of the driving gear into the gear shifting gears. The problems that in a traditional gear shifting mode, gear engaging can only be achieved through an engagement sleeve and the like, abnormal sound is generated in the gear engaging process, and automatic gear disengaging is likely to occur are solved. According to the technical scheme, a basis can be provided for power gear shifting of a tractor, and electric control gear shifting can be achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a novel inverse sleeve shifting system. Background technique [0002] At present, domestic tractors have a technical bottleneck in gearbox technology. According to market research, domestic tractor horsepower is mainly concentrated below 220 horsepower. This is not because the engine power is insufficient, but mainly because there is no gearbox that matches the high-horsepower engine. Many tractor factories are also designing and developing automatic shifting technology, but they are all concentrated in the low-horsepower range, and there are basically no ones with more than 300 horsepower. [0003] According to market research and analysis, except for several foreign automatic transmission tractors, the so-called automatic transmission or power shift transmission in the domestic market is essentially power shifting, not automatic gear shifting in the real sense. ...

AI Technical Summary

Problems solved by technology

[0004] At present, the shifting method of domestic tractors still stays at the gear shifting of the meshing sleeve. The driving shaft drives the driving wheel to rotate. When shifting gears, the clutch is used to stop the driving shaft. The driven wheel meshes, and then the clutch is released, the driving shaft rotates, driving the driving wheel to rotate, the driving wheel drives the driven wheel to rotate, and the driven wheel drives the power output shaft to rotate, thus realizing variable speed transmission. The meshing and separation of the two gears is It is carried out on two gears on two different shafts. In the process of shifting and shifting, the gear shifting and shifting must use the clutch to cooperate normally. Strong frustration, uneven shifting, easy to cause engine and gearbox failure

[0005] However, because the clutch must be used in the above process, it is difficult to realize automatic shifting in the entire shifting process.

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