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Anti-skid differential with adaptive speed ratio

A technology of anti-skid differential and gear ratio, applied in the direction of differential transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of small change range of transmission ratio, small change range, easy generation of pulsation and impact, etc. Achieve the effect of increasing the value variation range, reducing pulsation and impact, and increasing the locking coefficient

Inactive Publication Date: 2007-07-04
MILITARY TRANSPORTATION UNIV PLA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two major weaknesses in the variable ratio differentials that have been used at present: one is that the variation range of the transmission ratio is too small to overcome the influence of slipping; the other is that the variation period of the transmission ratio is too short, which is prone to pulsation and shock
The reason is that the transmission ratio of the existing variable ratio differential is based on the gear pitch as a change cycle, and its cycle is too short and the range of change is too small

Method used

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  • Anti-skid differential with adaptive speed ratio
  • Anti-skid differential with adaptive speed ratio
  • Anti-skid differential with adaptive speed ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The adaptive variable ratio anti-slip differential device includes a differential case, 4 planetary gears 1, 2 side gears 2, a cross-shaped planetary gear shaft 3 and a disc spring 4. The differential case is composed of a left half case 5 and a right half case 6 with a cross hole in the middle. After the four planetary gears 1 are installed on the cross shafts of the planetary gear shaft 3 respectively, they are loaded into the differential case. A side gear 2, a disc spring 4 and a washer 7 are respectively installed in each cavity of the left half case 5 and the right half case 6 of the differential case, and then the left half case is fixed with 8 bolts. 5 and the right half shell 6 are connected into an integral structure. Planetary gear 1 has three speed ratio change periods per revolution. The transmission ratio of planetary gear 1 and side gear 2 satisfies:

[0022]

[0023] In the formula,  1 ,  2 are the rotation angles of the planetary gear and the ...

Embodiment 2

[0025] The structure of the second embodiment of the adaptive variable ratio anti-slip differential is basically the same as that of the first embodiment. speed z 1 =9,z 1 =18 (that is, the ratio of the number of teeth of planetary gear 1 to the number of teeth of side gear 2 is 1:2), c=0.4, n=1.

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Abstract

The anti-skid differential consists of casing, four planetary gears, two semi-shaft gear and crossed planetary gear shaft assembled together, and features that it can regulate automatically the torque distribution based on the rotation speed state of right and left wheels. The present invention available speed ratio variation limitation and sets transmission ratio variation law in whole turn area of planetary gear and thus greatly raised number variation range, locking coefficient of differential, and reduced pulsation and impact to reach the requrement for automobile to cross country and to prevent skid. The present invention is especially suitable for go anywhere vehicle, tipping lorry, wheeled loader, bulldozer and other engineering machines.

Description

(1) Technical field [0001] The invention relates to a differential gear, in particular to a gear ratio differential gear which sets its transmission ratio change rule in the entire circle interval of the planetary wheel, increases the value change range, and thereby increases the locking coefficient of the differential gear. (2) Background technology [0002] Off-road vehicles often drive on muddy, soft roads or even roadless areas, and passability is one of its most important performance indicators. As an important part of the car, the differential is to distribute the torque between the two output shafts and ensure that the two output shafts may rotate at different angular velocities. Its form and performance are directly related to the passability of the vehicle. [0003] At present, the drive axles of off-road vehicles in my country generally use symmetrical bevel gear differentials. As shown in Figure 1, the two axle gears are of the same size, and the torque can be rou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H48/06F16H48/20B60K23/04
Inventor 贾巨民张泉刘文山
Owner MILITARY TRANSPORTATION UNIV PLA
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