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Inter-axle differential assembly for automobile through type drive axle and roller pin group thereof

An inter-axle differential and through-type technology, which is applied in the direction of differential transmission, transmission, transmission parts, etc., can solve the problems of high requirements for lubrication conditions, poor carrying capacity, and high maintenance costs, so as to improve the carrying capacity, Effect of improving load carrying capacity and reducing friction loss

Pending Publication Date: 2021-05-14
SHAANXI HANDE AXLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method requires high lubrication conditions and poor load carrying capacity, which is prone to ablation, resulting in the replacement of the entire gear train and high maintenance costs

Method used

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  • Inter-axle differential assembly for automobile through type drive axle and roller pin group thereof
  • Inter-axle differential assembly for automobile through type drive axle and roller pin group thereof
  • Inter-axle differential assembly for automobile through type drive axle and roller pin group thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, an inter-axle differential assembly for a through drive axle of an automobile includes a main shaft 11, a cross shaft 2 coaxially assembled outside the main shaft 11 through splines, a driving cylindrical gear 3, and four planetary gears. The gear 6 and the side gear 4, the driving cylindrical gear 3 and the side gear 4 are respectively coaxially and rotatably assembled at the front and rear ends of the main shaft 11, and the four planetary gears 6 are respectively coaxially assembled on the cross shaft 2 On the corresponding sub-shaft, and the front end of each planetary gear 6 is meshed with the driving cylindrical gear 3, and the rear end of each planetary gear 6 is meshed with the side gear 4, and each planetary gear 6 is internally A stepped hole 13 is provided, and the four sub-shafts of the cross shaft 2 are all inserted into the corresponding stepped holes 13, and the gap between the cross shaft 2 and the inner wall of the stepped hole...

Embodiment 2

[0041] Such as figure 2 As shown, a needle roller set 14 applied to the above-mentioned inter-axle differential assembly includes a circle of needle rollers 7, soft inner fittings 15 and soft outer fittings 16 prefabricated on the inner and outer rings of the needle rollers 7, so that The needle rollers 7 are evenly distributed between the inner fitting 15 and the outer fitting 16 through extrusion.

[0042] Specifically, the lengths of the inner assembly 15 and the outer assembly 16 are both shorter than the needle roller 7, and the end of the outer assembly 16 opposite to the initial press-in end of the needle roller group is shorter than the end of the needle roller 7, and the inner assembly 15 and the The opposite end of the initial press-in end of the cross shaft 2 is shorter than the end of the needle roller 7 .

Embodiment 3

[0044] A method for installing needle rollers at a cross shaft in an inter-axle differential assembly, comprising the following steps:

[0045]Step 1. Prefabricate a circle of soft inner fittings 15 and soft outer fittings 16 on the inner and outer rings of the needle roller 7, so that the needle rollers 7 are evenly distributed between the inner fittings 15 and the outer fittings 16, and ensure that the inner fittings 15 and The length of the external assembly 16 is shorter than that of the needle roller 7, the end of the external assembly 16 opposite to the initial press-in end of the needle roller group is shorter than the end of the needle roller 7, and the end of the internal assembly 15 opposite to the initial press-in end of the cross shaft 2 is shorter than the needle roller 7 ends, finally forming the needle roller group 14;

[0046] Step 2. Press the above-mentioned needle roller set 14 into the stepped hole 13 of the planetary gear 6, and then take out the outer ass...

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Abstract

The invention discloses an inter-axle differential assembly for an automobile through-type drive axle. A driving cylindrical gear and a half axle gear of the assembly are respectively coaxial and are rotatably assembled on a main shaft through a needle bearing; a stepped hole is formed in each planetary gear; four split axles of a cross axle are inserted into the corresponding stepped holes; and the cross axle is rotationally connected with the inner wall of the corresponding stepped hole of the planetary gears by arranging a circle of roller pins. The invention further provides a roller pin group applied to the inter-axle differential assembly and an installation method of the roller pins at the position of the cross axle. Through the design of the roller pins between the cross axle and the planetary gears, friction loss can be reduced, and the width of the roller pins can be increased to the maximum extent in a limited space, so that the bearing capacity is improved; and needle bearings are adopted between a driving cylindrical gear and the main shaft and between the half axle gear and the main shaft, so that occupation of the radial size can be reduced to the maximum extent, and the bearing capacity of the main shaft is improved.

Description

technical field [0001] The invention belongs to the technical field of inter-axle differentials, and in particular relates to an inter-axle differential assembly for automobile through drive axles. Background technique [0002] At present, in the inter-axle differential assembly of the car through-type drive axle, the radial direction of the side gears mostly adopts the bushing structure, and the radial direction of the cross shaft or the bushing or surface heat treatment is directly matched with the planetary wheel hole. The above method requires high lubrication conditions and poor load carrying capacity, which is prone to ablation, resulting in the replacement of the entire gear train and high maintenance costs. Contents of the invention [0003] The present invention is achieved through the following technical solutions: [0004] The first aspect of the present invention provides an inter-axle differential assembly for a through drive axle of an automobile, which incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H48/10F16H48/42F16H57/00F16H57/021F16H57/023F16H57/04
CPCF16H57/021F16H48/10F16H57/0424F16H48/42F16H57/023F16H57/0031F16H2048/423F16H2057/02043
Inventor 丁炜琦张龙胡烜华赵冰巩占峰
Owner SHAANXI HANDE AXLE CO LTD
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