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Transmitting ratio variable slip-limiting speed differentiator with self-locking function

A technology of limited-slip differential and variable transmission ratio, which is applied in the direction of transmission, differential transmission, belt/chain/gear, etc., and can solve the limited locking performance of three-week variable transmission ratio limited-slip differential, etc. problems, to achieve the effect of getting rid of fatal shortcomings, simple structure and reliable performance

Inactive Publication Date: 2009-12-09
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Compared with the previous single-stage variable transmission ratio limited-slip differential, this three-stage variable transmission ratio limited-slip differential improves the locking performance of the differential, but it still does not fundamentally get rid of the locking The performance is limited by the range of speed ratio changes
Therefore, in the face of extreme road conditions, the locking performance of the three-week variable transmission ratio limited slip differential is still relatively limited.

Method used

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  • Transmitting ratio variable slip-limiting speed differentiator with self-locking function
  • Transmitting ratio variable slip-limiting speed differentiator with self-locking function
  • Transmitting ratio variable slip-limiting speed differentiator with self-locking function

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0031] A variable transmission ratio limited-slip differential with self-locking function, see figure 1 . It includes a differential case 1, in which a variable transmission ratio planetary gear 2 and a side gear 3 are arranged, and a cam ring 5, a locking ring 7, Back-moving spring 8 and spring cover 9, side gear 3 are provided with friction plates 10, and a central block 11 and cross shaft 12 are provided in the middle of the differential.

[0032] The rear end surface 4 of the side gear 3 is a periodic undulating curved surface, see image 3 .

[0033] The cam ring 5, see Figure 4-8 . One end face of the cam ring 5 is evenly distributed with cylindrical bosses 13, and the other end face of the cam ring 5 is composed of two parts: a zigzag inner ring face 14 and a plane outer ring face 15. The cylindrical boss 13 of the cam ring 5 is connected to the half ...

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Abstract

The invention relates to a variable transmission ratio limited-slip differential with self-locking function. Including the differential case (1), the variable transmission ratio planetary gear (2) and the side gear (3) arranged in it, and the cam between the rear end surface of the side gear (4) and the rear end surface of the differential case (6) ring (5), locking ring (7), return spring (8) and spring cover (9), the side gear (3) is provided with a friction plate (10), and a central square (11) is arranged in the middle of the differential ) and cross shaft (12), they form a self-locking mechanism. The invention provides a limited-slip differential that realizes self-locking under extreme road conditions and quickly and automatically unlocks when leaving extreme road conditions, thereby improving the passability and safety of the vehicle. The invention is especially suitable for all kinds of wheeled engineering machinery such as off-road vehicles, dump trucks, wheel loaders, bulldozers and the like.

Description

technical field [0001] The invention relates to a limited slip differential, in particular to a variable transmission ratio limited slip differential with a self-locking function. Background technique [0002] In order to overcome the slipping phenomenon of individual driving wheels of the car on bad roads, the limited slip differential came into being. According to the working principle, the limited-slip differential can be classified into internal friction type, overrunning type, electronic automatic differential lock, electronic braking limited-slip differential system combined with ABS braking system, and variable transmission ratio type. Among them, the variable transmission ratio limited-slip differential has the advantages of simple structure, reliable performance and no negative traction force, so it has been widely used. However, the limited-slip differential with variable transmission ratio has the disadvantage that the locking coefficient is limited by the variat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H48/20F16H48/06
Inventor 王小椿黄泽华
Owner BEIJING JIAOTONG UNIV
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