Transfer case differential mechanism of straight tooth planetary gear roller pin assembly

Abstract

The invention discloses a transfer case differential mechanism of a straight tooth planetary gear roller pin assembly. The transfer case differential mechanism comprises a planet carrier, a front shaft sun gear, a rear shaft sun gear and a planet gear carrier which are coaxially and sequentially arranged. A plurality of planet wheel sets are uniformly distributed between the planet carrier and the planet gear carrier at intervals; each planetary gear set comprises a front axle planetary gear roller pin assembly meshed with the front axle sun gear and a rear axle planetary gear roller pin assembly meshed with the rear axle sun gear; the front axle planetary gear roller pin assembly and the rear axle sun gear planetary gear roller pin assembly in the same group are meshed; the rear axle planetary gear roller pin assembly is at least provided with an oil hole communicated with an inner hole of the rear axle planetary gear and the outside; at least one end face of a front shaft planet wheel of the front shaft planet gear roller pin assembly is provided with an end face oil groove. The end face oil groove communicates with the inner wall and the outer wall of the front axle planet wheel. The lubricating device is simple in structure, good in lubricating effect, low in cost and easy to maintain; the vehicle chassis space can be reduced, and the advantages of being long in service life, small in size, light in weight and the like are achieved.

Description

technical field [0001] The invention belongs to the technical field of automobile transmission parts assembly, in particular to a differential between shafts of a transfer case, in particular to a transfer differential of a straight-toothed planetary gear needle assembly. Background technique [0002] At present, the inter-axial differential of the existing transfer case adopts a bevel gear pair mechanism, and its axial dimension is large, resulting in a large volume and increased weight of the transfer case, which is not conducive to the overall layout and lightweight design of the vehicle chassis; the gears in the existing structure The hole is in direct contact with the planetary gear shaft, which is prone to wear and ablation failure. In order to improve the wear resistance and wear reduction performance of gears and planetary gear shafts, some methods such as chemical heat treatment were used to solve some defects, but they could not meet the requirements of extreme ski...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the background technology, in order to solve the planetary gear shaft ablation problem of the existing inter-axle differential, the present invention provides a transfer differential with a straight-toothed planetary gear needle assembly. Tooth planetary gear pair and planetary gear needle roller assembly structure

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