Parallel shaft planet shift gearbox

Abstract

The invention discloses a parallel shaft planet shift gearbox comprising a planet transmission shift mechanism and a gear transmission mechanism. The planet transmission shift mechanism comprises an input shaft, clutches, sun wheels, planet wheels, planet carriers, tooth rings and an output shaft. The planet wheels are arranged on the planet carriers. The gear transmission mechanism comprises a driving gear, a driven gear, a driving shaft and a driven shaft. The first-grade sun wheel of first-grade planet mechanisms of all the gears of the planet transmission shift mechanism are connected into a whole. Fixing elements of all the gears are connected into a whole and fixed. The output shaft is connected with output elements of planet transmission mechanism of different gears through the clutches. The driving shaft is connected with the driven gear on the driven shaft through the driving gear. The planet transmission shift mechanism is connected with the gear transmission mechanism. Compared with existing parallel shaft gearboxes in the structural manners of shifting fork gear shifting, associator gear shifting and sliding gear shifting, the parallel shaft planet shift gearbox is larger in transmission ratio, and the bearing capacity of the gear shifting components is greatly improved; according to the parallel shaft planet shift gearbox, after the planet mechanisms change speed, gear shifting is conducted at the low-speed end, and compared with a mechanism conducting gear shifting at the input end, the parallel shaft planet shift gearbox is good in operability and high in 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 ...

AI Technical Summary

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

Images