Parallel shaft planet shift gearbox

Abstract

The invention discloses a parallel shaft planetary shift gearbox, which includes a planetary transmission shift mechanism and a gear transmission mechanism. The planetary transmission shift mechanism includes an input shaft, a clutch, a sun gear, a planetary gear, a planet carrier, a ring gear, an The shaft and the planetary gear are arranged on the planet carrier; the gear transmission mechanism includes: the driving gear, the driven gear, the driving shaft, the driven shaft, and the first-stage sun gear connection of the first-stage planetary mechanism of all gear positions of the planetary transmission shift mechanism The fixed elements of each gear are connected into one body and fixed, the output shaft is connected with the output elements of the planetary transmission mechanism of different gears through the clutch, the driving shaft is connected with the driven gear on the driven shaft through the driving gear; the planetary transmission The gear mechanism is connected with the gear transmission mechanism. Compared with the existing parallel shaft gearbox with shift fork, combination, and sliding gear shifting structure, the transmission ratio of the parallel shaft gearbox is larger, and the load capacity of the shifting parts is greatly increased. Reinforced, the mechanism shifts gears at the low-speed end after being shifted by the planetary mechanism. Compared with the mechanism that shifts gears at the input end, it has better operability and high reliability.

Description

technical field [0001] The invention relates to the field of reducers, in particular to a planetary mechanism multi-gear shift parallel shaft gearbox. Background technique [0002] The gear shifting of the traditional parallel shaft gearbox is achieved by changing the meshing of the gears, thereby changing the transmission chain. The axes of these intermeshing gears are also parallel to each other. Generally, the first-stage transmission is a pair of gears meshing, which must carry a large torque. In this case, it is necessary to increase the tooth width of the gear or increase the number of teeth of the gear or increase the modulus of the gear. To obtain a large transmission ratio, it is necessary to increase the number of teeth of the gear or the number of stages of the gear transmission. These methods all make the volume of the gearbox change. big. When the gearbox needs to have a reverse gear, an intermediate gear (that is, an idler gear) should be added to realize the ...

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Problems solved by technology

[0002] The gear shifting of the traditional parallel shaft gearbox is achieved by changing the meshing of the gears, thereby changing the transmission chain. The axes of these intermeshing gears are also parallel to each other. Generally, the first-stage transmission is a pair of gears meshing, which must carry a large torque. In this case, it is necessary to increase the tooth width of the gear or increase the number of teeth of the gear or increase the modulus of the gear. To obtain a large transmission ratio, it is necessary to increase the number of teeth of the gear or the number of stages of the gear transmission. These methods all make the volume of the gearbox change. Big

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