Tractor speed-changing box unit with synchronizer commutation

Abstract

The invention relates to a tractor speed-changing box unit with synchronizer commutation, comprising an inverter unit, a main speed-changing unit and an auxiliary speed-changing unit which are arranged in sequence, wherein one end of the inverter unit is connected with a tractor engine, and one end of the auxiliary speed-changing unit is connected with a tractor rear axle. By adopting the arranging manners, the tractor speed-changing box unit with synchronizer commutation can transmit motive power of the tractor engine to the tractor rear axle, a tractor front axle and a power output shaft. By the combination of the inverter unit, the main speed-changing unit and the auxiliary speed-changing unit, 12 forward gears and12 backward gears can be realized; the inverter unit is arranged at front end of the main speed-changing unit, which is convenient to realize commutation and gear engagement by adopting a synchronizer structure and unnecessary to stop the tractor to engage gears in low speed, therefore, the gear-shifting impact and the gear-shifting force are small; the main speed-changing unit adopts a synchronizer to shift gears and is unnecessary to stop the tractor to shift gears, therefore, the gear-shifting impact and the gear-shifting force are small; and an auxiliary speed-changing driven shaft and a bevel pinion in the auxiliary speed-changing unit are integrated, therefore, the structure is compact.

Description

technical field [0001] The invention belongs to the field of tractors, and relates to a tractor gearbox device with synchronizer reversing. Background technique [0002] At present, on all kinds of large and medium power tractors produced in China, the traditional gearbox with reverse gear is generally used, and the number of reverse gears is generally 2 to 4. Due to its small number of gears and narrow speed range, it is difficult to adapt to fast and efficient transmission. job requirements. Although some tractor products use a gearbox with a commutator to achieve the reverse gear with the same number of forward gears, which meets the needs of the reverse gear and speed range, but because the commutator is arranged behind the main and auxiliary transmissions, it can only be reversed. Using meshing sleeves or sliding gears for shifting and shifting gears requires parking when shifting shifts and shifting gears, which affects work efficiency; in addition, the impact and ope...

AI Technical Summary

Problems solved by technology

[0002] At present, on all kinds of large and medium power tractors produced in China, the traditional gearbox with reverse gear is generally used, and the number of reverse gears is generally 2 to 4. Due to its small number of gears and narrow speed range, it is difficult to adapt to fast and efficient transmission. job requirements

Although some tractor products use a gearbox with a commutator to achieve the reverse gear with the same number of forward gears, which meets the needs of the reverse gear and speed range, but because the commutator is arranged behind the main and auxiliary transmissions, it can only be reversed. Using meshing sleeves or sliding gears for shifting and shifting gears, it is necessary to stop when shifting shifts and shifting gears, which affects work efficiency; in addition, the impact and operating force are large when shifting gears, which brings discomfort to the driver and cannot meet the needs of users

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