Differential mechanism with anti-rotation gasket

Abstract

The differential mechanism with the anti-rotation gaskets comprises a differential mechanism shell, a planetary gear and a half axle gear, a planetary gear gasket is arranged between the differential mechanism shell and the planetary gear, and a half axle gear gasket is arranged between the differential mechanism shell and the half axle gear; a first locking part is outwards arranged on the circumferential edge of the planetary gear gasket in the radial direction, a second locking part is outwards arranged on the circumferential edge of the half axle gear gasket in the radial direction, and a first clamping groove and a second clamping groove matched with the first locking part and the second locking part are formed in the differential mechanism shell; the face, making contact with a planetary gear, of the planetary gear gasket is a concave arc face, and first surface textures are arranged on the arc face and evenly distributed in the circumferential direction of the planetary gear gasket. Second surface textures are arranged on the face, making contact with the half axle gear, of the half axle gear gasket and are evenly distributed in the circumferential direction of the half axle gear gasket. Through the gear gasket of the structure, abrasion of a differential mechanism is reduced, and the operation reliability of the differential mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a differential with an anti-rotation gasket. Background Art

[0002] As a key component of the axle transmission system, the differential plays an important role in the driving process of the vehicle. The reliability of the differential directly affects the service life of the axle. The differential often faces harsh working conditions of low speed and heavy load. The planetary gear gasket and the axle gear gasket are key parts to reduce the wear between the differential housing and the planetary gears and axle gears. However, the planetary gear gasket and the axle gear gasket are only placed between the differential housing and the planetary gears and axle gears. When the planetary gears and axle gears rotate, the differential housing and the planetary gear gasket and the axle gear gasket will move relative to each other, resulting in serious wear of the differential housing, iron chips inclusion, increased gear installation distance, and ultimately damage to the entire differential. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a differential with an anti-rotation gasket. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0004] A differential with an anti-rotation gasket, comprising a differential housing, a planetary gear and a side gear, wherein a planetary gear gasket is arranged between the differential housing and the planetary gear; a side gear gasket is arranged between the differential housing and the side gear; a first locking portion is arranged radially outwardly on the circumferential edge of the planetary gear gasket, and a first clamping groove matched with the first locking portion is arranged on the differential housing; a second locking portion is arranged radially outwardly on the circumferential edge of the side gear gasket, and a second clamping groove matched with the second locking portion is arranged on the differential housing;

[0005] The surface of the planetary gear gasket in contact with the planetary gear is a concave arc surface, and the arc surface is provided with a first surface texture, and the first surface texture is evenly arranged along the circumferential direction of the planetary gear gasket;

[0006] The side gear gasket is a flat gasket, and a second surface texture is provided on the side contacting the side gear, and the second surface texture is evenly arranged along the circumferential direction of the side gear gasket.

[0007] Preferably, the first surface texture and the second surface texture are both composed of a plurality of circular or elliptical pits arranged in a trapezoidal shape.

[0008] Preferably, the angle between two adjacent rows of pits in the first surface texture along the circumferential direction of the planetary gear gasket is 1°~10°; the angle between two adjacent rows of pits in the second surface texture along the circumferential direction of the half-shaft gear gasket is 1°~10°.

[0009] Preferably, the distance between two radially adjacent pits along the planetary gear gasket and the half-shaft gear gasket is 1-10 mm.

[0010] Preferably, 6 to 10 of the first surface textures are evenly arranged along the circumferential direction of the planetary gear gasket.

[0011] Preferably, 12 to 20 of the second surface textures are evenly arranged along the circumferential direction of the half-shaft gear gasket.

[0012] Beneficial effects of the utility model:

[0013] 1. The utility model is provided with a differential with an anti-rotation lock tongue gasket, and the lock tongue of the planetary gear gasket and the lock tongue of the axle gear gasket respectively cooperate with the corresponding slots to prevent the planetary gear and the axle gear from rotating relative to the differential housing, thereby avoiding wear of the differential housing, reducing the generation of iron filings, increasing the service life of the differential housing, and improving the reliability of the axle transmission system;

[0014] 2. By setting circular or elliptical pit textures on the planetary gear gaskets and the axle gear gaskets, the lubricating oil flow field is improved and the oil film thickness is increased, so that the differential can obtain a larger load-bearing capacity and a smaller friction coefficient; and under dry friction boundary conditions, the differential can improve lubrication and reduce friction by storing a small amount of lubricating oil in the pits, which is beneficial to improving the load-bearing capacity and life of the differential;

[0015] 3. In addition, the circular or elliptical pit texture can store a large amount of wear debris, thereby reducing differential wear and increasing differential life.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of a straight type lock tongue;

[0019] Figure 3 It is a schematic diagram of the structure of the bent type lock tongue;

[0020] Figure 4 It is a schematic diagram of the structure of a square lock tongue;

[0021] Figure 5It is a schematic diagram of the structure of a circular lock tongue;

[0022] Figure 6~Figure 8 Schematic diagram of the installation position of planetary gear gaskets and half-shaft gear gaskets.

[0023] Description of reference numerals:

[0024] 1-differential case; 2-planetary gear; 3-side shaft gear; 4-planetary gear gasket; 5-side shaft gear gasket; 1-1-first slot; 1-2-second slot; 4-1-first locking part; 4-2-first surface texture; 5-1-second locking part; 5-2-second surface texture. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0026] See also Figure 1~Figure 5 The embodiment of the utility model provides a differential with an anti-rotation gasket, which specifically includes a differential case 1, a planetary gear 2 and a side gear 3. A planetary gear gasket 4 is arranged between the differential case 1 and the planetary gear 2; a side gear gasket 5 is arranged between the differential case 1 and the side gear 3; a first locking portion 4-1 is arranged radially outward on the circumferential edge of the planetary gear gasket 4, and a first card slot 1-1 adapted to the first locking portion 4-1 is arranged on the differential case 1. A slot 1-1 and a first locking portion 4-1 lock the planetary gear gasket 4 on the differential case 1 to prevent it from relative movement with the differential case 1; a second locking portion 5-1 is radially provided on the circumferential edge of the half-shaft gear gasket 5 outward, and a second slot 1-2 matched with the second locking portion 5-1 is provided on the differential case 1. The half-shaft gear gasket 5 is locked on the differential case 1 through the second slot 1-2 and the second locking portion 5-1 to prevent it from relative movement with the differential case 1.

[0027] The first locking portion 4-1 is a straight or bent locking tongue, and the number of the locking tongues can be one or more, see Figure 6~Figure 8 The first locking portion 4-1 can be fixed on the outer end surface, inner end surface and inner wall of the differential housing. The second locking portion 5-1 is a square or semicircular locking tongue, and the number of the locking tongues can be one or more.

[0028] The side of the planetary gear gasket 4 in contact with the planetary gear 2 is a concave arc surface, and the side in contact with the differential case 1 is a spherical surface. The arc surface is provided with a first surface texture 4-2, and the first surface texture 4-2 is evenly arranged along the circumferential direction of the planetary gear gasket 4; the side shaft gear gasket 5 is a flat gasket, and the side in contact with the side shaft gear 3 is provided with a second surface texture 5-2, and the second surface texture 5-2 is evenly arranged along the circumferential direction of the side shaft gear gasket 5. By providing the first surface texture 4-2 and the second surface texture 5-2, the lubricating oil flow field can be improved, the oil film thickness can be increased, and the friction between the planetary gear 2, the side shaft gear 3 and the gasket can be reduced, thereby obtaining a greater load-bearing capacity.

[0029] Preferably, the first surface texture 4-2 and the second surface texture 5-2 are composed of a plurality of circular or elliptical pits and are arranged in a trapezoidal shape; that is, the planetary gear gasket 4 has a plurality of first surface textures 4-2 arranged in a trapezoidal shape evenly distributed along the circumferential direction, and the half-shaft gear gasket 5 has a plurality of second surface textures 5-2 arranged in a trapezoidal shape evenly distributed along the circumferential direction.

[0030] Preferably, the angle between two adjacent rows of pits in the first surface texture 4-2 along the circumferential direction of the planetary gear gasket 4 is 1°~10°; the angle between two adjacent rows of pits in the second surface texture 5-2 along the circumferential direction of the half-shaft gear gasket 5 is 1°~10°.

[0031] Preferably, the distance between two radially adjacent recesses of the planetary gear washer 4 or the half-shaft gear washer 5 is 1-10 mm.

[0032] Preferably, 6 to 10 of the first surface textures 4 - 2 are evenly arranged along the circumferential direction of the planetary gear gasket 4 .

[0033] Preferably, 12 to 20 of the second surface textures 5 - 2 are evenly arranged in an array along the circumferential direction of the half-shaft gear gasket 5 .

[0034] After actual production trials, planetary gear gaskets and half-axle gear gaskets with trapezoidal arranged circular or elliptical pit textures are used. In extreme oil-deficient conditions, trace amounts of lubricating oil can be stored through the trapezoidal arranged circular or elliptical pit textures to improve lubrication, increase oil film thickness, and reduce friction, which is beneficial to improving the load-bearing capacity and life of the differential. At the same time, by setting a reasonable number, angle and distance of textures, the surface texture can achieve better results.

[0035] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A differential with an anti-rotation gasket, characterized in that: The invention comprises a differential case, planetary gears and side gears, wherein a planetary gear gasket is arranged between the differential case and the planetary gears; a side gear gasket is arranged between the differential case and the side gears; a first locking portion is arranged radially outwardly on the circumferential edge of the planetary gear gasket, and a first clamping groove matched with the first locking portion is arranged on the differential case; a second locking portion is arranged radially outwardly on the circumferential edge of the side gear gasket, and a second clamping groove matched with the second locking portion is arranged on the differential case; The surface of the planetary gear gasket in contact with the planetary gear is a concave arc surface, and the arc surface is provided with a first surface texture, and the first surface texture is evenly arranged along the circumferential direction of the planetary gear gasket; The side gear gasket is a flat gasket, and a second surface texture is provided on the side contacting the side gear, and the second surface texture is evenly arranged along the circumferential direction of the side gear gasket.

2. The differential with anti-rotation washers according to claim 1, characterized in that: The first surface texture and the second surface texture are both composed of a plurality of circular or elliptical pits arranged in a trapezoidal shape.

3. The differential with anti-rotation washers according to claim 2, characterized in that: The angle between two adjacent rows of pits in the first surface texture along the circumferential direction of the planetary gear gasket is 1°~10°; the angle between two adjacent rows of pits in the second surface texture along the circumferential direction of the half-shaft gear gasket is 1°~10°.

4. The differential with anti-rotation washers according to claim 2, characterized in that: The distance between two radially adjacent pits of the planetary gear gasket and the half-shaft gear gasket is 1-10 mm.

5. The differential with anti-rotation washers according to claim 1, characterized in that: The first surface textures are evenly arranged in 6 to 10 patterns along the circumferential direction of the planetary gear gasket.

6. The differential with anti-rotation washers according to claim 1, characterized in that: The second surface textures are evenly arranged in 12 to 20 pieces along the circumferential direction of the half-shaft gear gasket.

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