Positioning and supporting structure of helical planetary gearbox for pure electric passenger car

Abstract

The invention relates to a positioning and supporting structure of a helical planetary gearbox for a pure electric passenger car. By the adoption of the positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car, the problems that an existing single-stage planetary transmission mechanism of the helical planetary gearbox of the pure electric passenger car is large in structural size, a sun gear assembly cannot be supported stably, and axial moving and radial swinging occur easily are solved. The positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car comprises a sliding bearing, a thrust bearing, a sun gear assembly, a deep groove ball bearing, a supporting base and a frame. The sliding bearing is pressed in an inner hole in the output end of the frame. An inner hole of the sliding bearing and a shaft neck at the output end of the sun gear assembly are mounted in a clearance fit mode. The deep groove ball bearing is mounted on a shaft neck at the input end of the sun gear assembly. The outer ring of the deep groove ball bearing is in clearance fit with an inner hole of the supporting base. The thrust bearing is close to the position where the sliding bearing is mounted and is mounted between the frame and the sun gear assembly. According to the positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car, planetary components can be supported stably in the radial direction, axial moving caused by bevel gear transmission is prevented, and axial positioning is guaranteed; meanwhile, structural arrangement is facilitated, and the structure is compact.

Description

technical field [0001] The invention relates to a positioning support structure of a helical planetary gearbox for a pure electric passenger car. Background technique [0002] So far, the helical planetary reducers for pure electric buses are all single-stage planetary transmission mechanisms, which are supported by ball bearings, and the sun gear assembly as the power input end is supported by one point in the axial direction and radial direction. Therefore, the traditional helical gear planetary reducer for pure electric buses has the problems of large structural size, unstable support of the sun gear assembly, and prone to axial and radial swings. Contents of the invention [0003] The present invention solves the problem of large structural size and sun gear assembly existing in the single-stage planetary transmission mechanism of the helical planetary reducer used in electric buses by adding a sliding bearing, a thrust bearing and a deep groove ball bearing at the inp...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of large structural size and sun gear assembly existing in the single-stage planetary transmission mechanism of the helical planetary reducer used in electric buses by adding a sliding bearing, a thrust bearing and a deep groove ball bearing at the input sun gear assembly. The support is unstable, and the problems of axial movement and radial swing are easy to occur

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