CN217927041U

CN217927041U - New forms of energy are reduction gear for commercial vehicle

Info

Publication number: CN217927041U
Application number: CN202222079093.4U
Authority: CN
Inventors: 李帅龙; 张涛; 孙建军; 李志成
Original assignee: Zhengzhou Zhiqu Technology Co ltd
Current assignee: Zhengzhou Zhiqu Technology Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-29
Anticipated expiration: 2032-08-09

Abstract

The utility model discloses a new energy commercial vehicle speed reducer, which comprises a left shell, a right shell, a box closing bolt, an input shaft assembly, an intermediate shaft assembly and an output shaft assembly; the left shell and the right shell are connected through a box closing bolt, and the input shaft assembly, the output shaft assembly and the middle shaft assembly are arranged in a cavity formed by the left shell and the right shell; the input shaft assembly and the output shaft assembly transmit power through a middle shaft assembly. The utility model has the characteristics of compact structure, small, light in weight, lubricated oil mass are few, transmission efficiency is high, can be applied to the electric automobile transaxle system of high rotational speed, big moment of torsion.

Description

New forms of energy are reduction gear for commercial vehicle

Technical Field

The utility model relates to a new energy automobile field, concretely relates to new forms of energy are reduction gear for commercial vehicle.

Background

With the vigorous development of the new energy automobile industry, the market share of new energy automobiles is increased year by year. Particularly, in the passenger car market, various power system structures are continuously promoted to be new under the environment that light weight, power performance and economy are main competitive indexes. Although the market of the commercial vehicle starts late, the experience in the development process of the market of the passenger vehicle is drawn, and the curve of the development of the passenger vehicle is avoided. Under the vigorous support of macro policies in various places, the market share of the current new energy commercial vehicle market is greatly improved. In the aspect of power system configuration, the market of commercial vehicles shows a situation of parallel development of a direct drive motor system, an integrated axle system and a wheel side system, wherein the integrated axle system is advocated by various manufacturers due to the advantages of reliability and economy. A wide integrated bridge system adopts a bridge package mode, the amount of lubricating oil is large, the oil stirring loss of the system is large, and the transmission efficiency cannot be improved. Therefore, aiming at the phenomenon of homogenization development of various manufacturers of the current integrated bridge system, in order to further improve the efficiency of the system and the competitiveness of products, an innovative integrated bridge speed reducer scheme needs to be designed to improve the efficiency of the system.

Disclosure of Invention

In order to solve the problem, the utility model provides a new forms of energy are reduction gear for commercial vehicle carries out the structural advantage complementary with integrated bridge structure and passenger car reduction gear, and its simple structure, small, the lubricated oil mass is few, transmission efficiency is high, can realize promoting driving motor output torque, the reduction gear of stable speed reduction.

The utility model adopts the technical proposal that: a speed reducer for a new energy commercial vehicle comprises a left shell, a right shell, a box closing bolt, an input shaft assembly, a middle shaft assembly and an output shaft assembly; the left shell and the right shell are connected through a box closing bolt, and the input shaft assembly, the output assembly and the middle shaft assembly are arranged in a cavity formed by the left shell and the right shell; the input shaft assembly, the intermediate shaft assembly and the output assembly form a three-shaft two-stage parallel shaft structure, and the input shaft assembly and the output assembly transmit power through the intermediate shaft assembly; the input shaft assembly comprises an input shaft, an input shaft gear, an input shaft front bearing and an input shaft rear bearing, wherein the input shaft front bearing and the input shaft rear bearing are axially sleeved on the input shaft; the output assembly comprises a differential mechanism, an output gear ring, an output front bearing and an output rear bearing, wherein the output front bearing and the output rear bearing are axially sleeved on the differential mechanism; the intermediate shaft assembly comprises an intermediate shaft, an intermediate shaft driving gear, an intermediate shaft front bearing, an intermediate shaft driven gear and an intermediate shaft rear bearing, wherein the intermediate shaft front bearing, the intermediate shaft driven gear and the intermediate shaft rear bearing are axially sleeved on the intermediate shaft, the intermediate shaft driving gear is meshed with the output gear ring, the intermediate shaft driven gear is meshed with the input shaft gear, and the intermediate shaft is respectively fixed on the left shell and the right shell through the intermediate shaft front bearing and the intermediate shaft rear bearing.

Further, an input oil seal is arranged at the joint of the surface of the left shell and the input shaft; the output oil seals are arranged on the surfaces of the left shell and the right shell and are connected with the output shaft assembly.

Further, the input shaft and the input shaft gear, and the intermediate shaft driving gear are of an integrated structure.

Furthermore, the input shaft and the output shaft of the motor, the driven gear of the intermediate shaft and the intermediate shaft, and the differential and the half shaft are all connected through splines.

Further, the left shell and the right shell are made of cast iron materials.

The utility model discloses the beneficial effect who produces is: the utility model discloses reduction gear simple structure, small, light in weight, easily assembly, lubricated oil mass are few, transmission efficiency is high, the good reliability, can realize transmitting big moment of torsion, are applicable to the operation requirement of high rotational speed low noise.

Drawings

FIG. 1 is a schematic view of the present invention;

in the figure: 1-intermediate shaft driving gear, 2-intermediate shaft rear bearing, 3-intermediate driven gear, 4-intermediate shaft, 5-intermediate front bearing, 6-intermediate shaft assembly, 7-input oil seal, 8-left shell, 9-box-closing bolt, 10-right shell, 11-input shaft, 12-input front bearing, 13-input rear bearing, 14-input shaft gear, 15-input shaft assembly, 16-output oil seal, 17-output rear bearing, 18-output gear ring, 19-differential, 20-connecting bolt, 21-output front bearing and 22-output shaft assembly.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model relates to a new forms of energy are reduction gear for commercial vehicle, input shaft, jackshaft, output shaft adopt triaxial two-stage parallel shaft to arrange, arrange through the structure of input shaft assembly 15, jackshaft assembly 6, output shaft assembly 22, realize the transmission of moment of torsion.

As shown in fig. 1, a left housing 8 and a right housing 10 made of cast iron material are connected by a box assembling bolt 9, and an input shaft assembly 15, an intermediate shaft assembly 6 and an output shaft assembly 22 are arranged in a cavity formed by the left housing 8 and the right housing 10. The input shaft assembly 15 comprises an input shaft 11, an input shaft gear 14, and an input shaft front bearing 12 and an input shaft rear bearing 13 which are sleeved on the input shaft 11 along the axial direction; the intermediate shaft assembly 6 comprises an intermediate shaft 4, an intermediate shaft driving gear 1, an intermediate shaft front bearing 5, an intermediate shaft driven gear 3 and an intermediate shaft rear bearing 2, wherein the intermediate shaft front bearing 5, the intermediate shaft driven gear 3 and the intermediate shaft rear bearing 2 are axially sleeved on the intermediate shaft 4; the output shaft assembly 22 comprises a differential 19, an output gear ring 18, a connecting bolt 20, an output front bearing 21 and an output rear bearing 17 which are sleeved on the differential 19 along the axial direction. Input shaft 11 links to each other through internal spline and motor output shaft external spline, make the moment of torsion transmit input shaft 11, be equipped with input shaft gear 14 on the input shaft 11, and with input shaft 11 formula structure as an organic whole, input shaft gear 14 is through meshing with jackshaft driven gear 3, transmit the moment of torsion to jackshaft driven gear 3, jackshaft driven gear 3 passes through spline fit with jackshaft 4, jackshaft driven gear 3 transmits the moment of torsion to jackshaft driving gear 1 through jackshaft 4, jackshaft 4 and jackshaft driving gear 1 formula structure as an organic whole, jackshaft driving gear 1 is through meshing with output ring gear 18, transmit the moment of torsion to differential 19. The differential 19 is connected with the half shaft through an internal spline, and finally the differential 19 transmits the torque to the half shaft to realize the output of the torque; an input shaft front bearing 12 and an input shaft rear bearing 13 are arranged on the left shell 8 and the right shell 9; the input oil seal 7 is arranged at the joint of the surface of the left shell 8 and the input shaft 11, so that lubricating oil in the speed reducer assembly box body is prevented from overflowing from the input end and external dust is prevented from entering the speed reducer box body from the input end; the output oil seal 16 is arranged on the surface of the left shell 8 and the right shell 10 and is connected with the output shaft assembly 22. The lubricating oil in the speed reducer assembly box body is prevented from overflowing from the output end and external dust is prevented from entering the speed reducer box body from the output end.

The utility model meets the performance requirements of service life and reliability through design calculation; through reasonable selection of the bearings and optimal design of the gears, the size is minimum, the space limitation requirement of the speed reducer on the whole vehicle is met, excellent NVH performance is realized, the structure is compact, the size is small, the weight is light, the transmission efficiency is high, the high rotating speed requirement that the torque of an input motor reaches 480N.m and the input rotating speed reaches 12000rpm can be met, and the highest efficiency of the speed reducer assembly is not less than 97%.

Claims

1. A speed reducer for a new energy commercial vehicle comprises a left shell, a right shell, a box closing bolt, an input shaft assembly, a middle shaft assembly and an output shaft assembly; the left shell and the right shell are connected through a box assembling bolt, and the input shaft assembly, the output assembly and the middle shaft assembly are arranged in a cavity formed by the left shell and the right shell; the input shaft assembly, the intermediate shaft assembly and the output assembly form a three-shaft two-stage parallel shaft structure, and the input shaft assembly and the output assembly transmit power through the intermediate shaft assembly; the method is characterized in that: the input shaft assembly comprises an input shaft, an input shaft gear, an input shaft front bearing and an input shaft rear bearing, wherein the input shaft front bearing and the input shaft rear bearing are axially sleeved on the input shaft; the output assembly comprises a differential mechanism, an output gear ring, an output front bearing and an output rear bearing, wherein the output front bearing and the output rear bearing are axially sleeved on the differential mechanism; the intermediate shaft assembly comprises an intermediate shaft, an intermediate shaft driving gear, an intermediate shaft front bearing, an intermediate shaft driven gear and an intermediate shaft rear bearing, wherein the intermediate shaft front bearing, the intermediate shaft driven gear and the intermediate shaft rear bearing are axially sleeved on the intermediate shaft, the intermediate shaft driving gear is meshed with the output gear ring, the intermediate shaft driven gear is meshed with the input shaft gear, and the intermediate shaft is respectively fixed on the left shell and the right shell through the intermediate shaft front bearing and the intermediate shaft rear bearing.

2. The decelerator for a new energy commercial vehicle according to claim 1, wherein: the input oil seal is arranged at the joint of the surface of the left shell and the input shaft; the output oil seals are arranged on the surfaces of the left shell and the right shell and are connected with the output shaft assembly.

3. The decelerator for new energy commercial vehicle according to claim 1, characterized in that: the input shaft and the input shaft gear, the intermediate shaft and the intermediate shaft driving gear are of an integrated structure.

4. The decelerator for a new energy commercial vehicle according to claim 1, wherein: the input shaft is connected with the output shaft of the motor, the driven gear of the intermediate shaft is connected with the intermediate shaft, and the differential is connected with the half shaft through splines.

5. The decelerator for new energy commercial vehicle according to claim 1, characterized in that: the left shell and the right shell are made of cast iron materials.