CN211852547U - Cross axle universal joint - Google Patents
Cross axle universal joint Download PDFInfo
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- CN211852547U CN211852547U CN202020483175.3U CN202020483175U CN211852547U CN 211852547 U CN211852547 U CN 211852547U CN 202020483175 U CN202020483175 U CN 202020483175U CN 211852547 U CN211852547 U CN 211852547U
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Abstract
The utility model provides a cross axle universal joint belongs to mechanical technical field. The universal joint solves the problems that the service life of the existing universal joint with the cross shaft is short and the like. The cross shaft universal joint comprises a body, wherein four pin shafts are arranged on the body, a bearing sleeve is sleeved on each pin shaft and comprises a sleeve body and a base part, a roller pin is arranged between the inner side surface of the sleeve body and the outer side surface of each pin shaft, a gasket made of plastic is arranged between the outer end surface of each pin shaft and the inner end surface of each base part, the outer edge of each gasket protrudes out of the outer side surface of each pin shaft, the outer end of each roller pin is abutted against the outer edge of each gasket, a chamfer is arranged between the outer side surface of each pin shaft and the outer end surface of each pin shaft, the roller pins and the gaskets form an annular oil storage cavity in a surrounding mode at the chamfer, an oil storage groove is arranged at the center of the inner end surface of each base part, an oil through hole communicated with the oil storage groove is. The cross axle universal joint has the advantage that the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of machinery, a cross universal joint is related to.
Background
The universal joint is a part for realizing variable angle power transmission, is used for changing the position of the transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system. The universal joint includes a non-constant velocity universal joint, a quasi-constant velocity universal joint, a constant velocity universal joint and the like, and the cross joint is a non-constant velocity universal joint.
Chinese patent literature document discloses a cross shaft [ application number: CN 201720036889.8; the notice number is: 206377134U ], including the cross body, be provided with four round pin axles on the cross body, all overlap on each round pin axle and be equipped with the bearing assembly, the bearing assembly includes oil blanket circle and bearing housing, is provided with the kingpin between each round pin axle and the bearing housing, and the surface of kingpin is contradicted each other with round pin axle and bearing housing, still is provided with the glib talker on the cross body. The oil seal ring comprises a first connecting portion, a second connecting portion and a third connecting portion, wherein the first connecting portion, the second connecting portion and the third connecting portion are formed by bending in sequence, a U-shaped sealing cavity is formed by bending in sequence, and a sealing bulge is arranged on the end face of the first connecting portion facing the third connecting portion. The bearing sleeve comprises a base portion and a connection portion, the front end of the connection portion is located in the sealing cavity, a sealing groove matched with the sealing protrusion is formed in the end face, facing the first connection portion, of the connection portion, the sealing groove is matched with the sealing protrusion, and the arc-shaped surface is formed by the contact surface of the sealing protrusion and the sealing groove.
When the cross shaft works, the bearing sleeve rotates on the pin shaft, the roller pin rolls between the pin shaft and the bearing sleeve to realize rolling friction, and friction and abrasion between the outer side face of the pin shaft and the inner side face of the bearing sleeve can be reduced.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, provide a cross universal joint, solved the not high technical problem of current cross universal joint life.
The purpose of the utility model can be realized by the following technical proposal:
a cross axle universal joint comprises a body, wherein four pin shafts are arranged on the body, each pin shaft is sleeved with a bearing sleeve, each bearing sleeve comprises a cylindrical sleeve body and a base part for sealing the outer end of the sleeve body, a roller pin is arranged between the inner side surface of the sleeve body and the outer side surface of the pin shaft, an oil seal is arranged between the inner end of the sleeve body and the pin shaft, the cross axle universal joint is characterized in that a gasket made of plastics is arranged between the outer end surface of the pin shaft and the inner end surface of the base part, the outer edge of the gasket protrudes out of the outer side surface of the pin shaft, the outer end of the roller pin abuts against the outer edge of the gasket, a chamfer angle is arranged between the outer side surface of the pin shaft and the outer end surface of the pin shaft, the roller pin shaft and the gasket form an annular oil storage cavity at the chamfer angle, an oil storage tank is arranged at the, and an oil through groove for communicating the oil storage cavity with the oil through hole is formed in the outer end face of the pin shaft.
The outer end of the pin shaft is separated from the base of the bearing sleeve by the gasket, so that frictional wear between the outer end of the pin shaft and the base of the bearing sleeve is avoided, the outer end of the roller pin is separated from the base of the bearing sleeve by the gasket, frictional wear between the outer end of the roller pin and the base of the bearing sleeve is avoided, the service lives of the pin shaft and the roller pin are prolonged, and the service life of the cross-shaped shaft universal joint is prolonged. Lubricating grease is arranged in the oil storage cavity, and the lubricating grease in the oil storage cavity can enter between the outer side face of the pin shaft and the outer side face of the roller pin and between the inner side face of the sleeve body and the outer side face of the roller pin for lubrication along with the rotation of the bearing sleeve and the rolling of the roller pin due to the fact that the oil storage cavity is surrounded by the roller pin; lubricating grease is stored in the oil storage tank, can enter the oil storage cavity through the oil through hole and the oil through groove, and is continuously supplemented to the lubricating grease in the oil storage cavity, so that a lubricating state is kept between the outer side face of the pin shaft and the outer side face of the roller pin and between the inner side face of the sleeve body and the outer side face of the roller pin for a long time, the friction and abrasion of the outer side face of the roller pin, the outer side face of the pin shaft and the inner side face of the sleeve body are reduced, and the service life of the universal joint is prolonged. The cross axle universal joint has the advantage that the service life is prolonged.
In the universal joint pin universal joint, a groove is formed in the inner surface of the bearing sleeve at the joint of the sleeve body and the base, and the needle roller, the gasket and the bearing sleeve form an annular oil gathering cavity in a surrounding mode at the groove.
Lubricating grease is arranged in the oil gathering cavity, the oil gathering cavity is surrounded by the roller pins, and along with the rotation of the bearing sleeve and the rolling of the roller pins, the lubricating grease in the oil gathering cavity can enter between the inner side face of the sleeve body and the outer side face of the roller pins and between the outer side face of the pin shaft and the outer side face of the roller pins for lubrication, so that the friction wear of the outer side face of the roller pins, the outer side face of the pin shaft and the inner side face of the sleeve body is reduced, and the service life of the universal joint is prolonged.
In the universal joint pin universal joint, the inner end surface of the base is also provided with an oil passing groove for communicating the oil storage groove and the oil collecting cavity.
Lubricating grease in the oil storage tank can enter the oil collecting cavity through the oil groove to supplement the lubricating grease in the oil collecting cavity, so that a lubricating state is kept between the outer side face of the pin shaft and the outer side face of the roller pin and between the inner side face of the sleeve body and the outer side face of the roller pin for a long time, frictional wear of the outer side face of the roller pin, the outer side face of the pin shaft and the inner side face of the sleeve body is reduced, and the service life of the universal joint is prolonged.
In the above-described universal joint, the spacer is made of nylon or polytetrafluoroethylene. The friction coefficient of the gasket made of nylon or polytetrafluoroethylene is small, and the friction abrasion between the end part of the roller pin and the end part of the pin shaft can be reduced, so that the service life of the universal joint of the cross shaft is prolonged.
In the universal joint pin, the outer end surface of the pin shaft is also provided with an oil storage groove, and the oil storage groove is communicated with the oil through hole.
Lubricating grease is stored in the oil storage groove, the lubricating grease can enter the oil storage cavity through the oil through hole and the oil through groove, and can enter the oil collecting cavity through the oil through hole, the oil storage groove and the oil passing groove, the lubricating grease in the oil storage cavity and the oil collecting cavity is constantly supplemented, a lubricating state is kept between the outer side face of the pin shaft and the outer side face of the roller pin and between the inner side face of the sleeve body and the outer side face of the roller pin for a long time, the friction wear of the outer side face of the roller pin and the inner side face of the sleeve body is reduced, and the service life of the cross shaft universal joint is prolonged.
In foretell cross axle universal joint, the oil blanket is including fixed skeleton and the sealing washer as an organic whole, the skeleton is inserted in the inner of the cover body and is fixed, convex sealing ring has on the medial surface of sealing washer, the sealing ring pastes and leans on the lateral surface of round pin axle and forms sealedly, still be connected with the dust cover between the inner of round pin axle and the cover body, the one end suit of dust cover is epaxial and fixed at the round pin, the other end suit of dust cover is in the outside of the cover body, be provided with the constant head tank on the lateral surface of the cover body inner, be provided with the location bulge loop on the other end of dust cover, the location bulge loop is located the constant head tank, all have the clearance between two sides of.
The oil seal is fixed on the sleeve body through the framework, so that the oil seal and the bearing sleeve are firmly fixed. The convex sealing ring and the pin shaft form sealing, so that the sealing is tighter and the sealing effect is good. The dust cover has the effect of protecting the oil seal, and the sealing effect that the outside sundries are prevented from being adhered to the oil seal to reduce the oil seal is avoided. The arrangement of the gap reduces the contact area between the dust cover and the bearing sleeve, reduces the resistance of the dust cover to the bearing sleeve, enables the bearing sleeve and the pin shaft to rotate smoothly, and enables the cross shaft universal joint to work stably and smoothly; the abrasion of the positioning convex ring can be reduced, and the service life of the universal joint of the cross shaft is prolonged.
Compared with the prior art, the utility model has the advantages of it is following:
the outer end of the pin shaft is separated from the base of the bearing sleeve by the gasket, and the outer end of the roller pin is separated from the base of the bearing sleeve, so that frictional wear between the outer end of the pin shaft, the outer end of the roller pin and the base of the bearing sleeve is avoided, and the service life of the universal joint is prolonged. The arrangement of the dust cover and the oil seal ensures the sealing effect between the bearing sleeve and the pin shaft, avoids the damage to the roller pin, the pin shaft and the bearing sleeve caused by the external sundries entering the roller pin, and is beneficial to improving the service life of the universal joint. The oil storage groove and the oil storage groove can supplement lubricating grease to the oil storage cavity and the oil collecting cavity through the oil grooves and the oil passing grooves, and the oil storage cavity and the oil collecting cavity are enclosed by the rolling needles, so that the rolling needles are kept in a lubricating state, and the service life of the cross-pin universal joint is prolonged.
Drawings
FIG. 1 is a cross-sectional view of the present universal joint;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged view at B in fig. 1.
In the figure, 1, a body; 1a, a pin shaft; 1a1, chamfering; 1a2, oil storage groove; 1a3, oil through groove; 2. a bearing housing; 2a, a sleeve body; 2a1, positioning groove; 2b, a base; 2b1, oil reservoir; 2b2, oil passing groove; 2c, a groove; 3. rolling needles; 4. oil sealing; 4a, a framework; 4b, a sealing ring; 4b1, sealing ring; 5. a dust cover; 5a, positioning convex rings; 6. a gasket; 6a, an oil through hole; 7. an oil storage chamber; 8. an oil collecting cavity; 9. a gap.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1-3, a universal joint comprises a body 1, wherein the body 1 is provided with four pin shafts 1a, and each pin shaft 1a is sleeved with a bearing sleeve 2. The bearing sleeve 2 comprises a cylindrical sleeve body 2a and a base 2b for sealing the outer end of the sleeve body 2a, and a roller pin 3 is arranged between the inner side surface of the sleeve body 2a and the outer side surface of the pin shaft 1 a. The needle rollers 3 are plural and arranged in sequence around the pin 1 a. The outer side surface of the pin shaft 1a and the inner side surface of the sleeve body 2a are both provided with carburizing and quenching layers, and the surfaces of the two carburizing and quenching layers are both grinding surfaces. The carburized quenching layer is obtained through a carburized quenching process, and the grinding surface is obtained through grinding processing. The carburizing and quenching layers are arranged on the outer side surface of the pin shaft 1a and the inner side surface of the sleeve body 2a, so that the surface hardness of the outer side surface of the pin shaft 1a and the inner side surface of the sleeve body 2a can be improved, the surface of the carburizing and quenching layers is a grinding surface, and the surface roughness can be reduced after the high-hardness surface is ground, so that the frictional wear at the roller pin 3 position is reduced.
An oil seal 4 is arranged between the inner end of the sleeve body 2a and the pin shaft 1a, a dust cover 5 is connected between the inner end of the sleeve body 2a and the inner end of the pin shaft 1a, and the dust cover 5 is located on the outer side of the oil seal 4. The oil seal 4 includes a frame 4a and a seal ring 4b fixed integrally, and the seal ring 4b is fixed to an inner side surface of the frame 4 a. The framework 4a is inserted into the inner end of the sleeve body 2a and fixed, the inner side surface of the sealing ring 4b is provided with a protruding sealing ring 4b1, and the sealing ring 4b1 is abutted against the outer side surface of the pin shaft 1a and forms a seal. The dust cover 5 is made of rubber materials, one end of the dust cover 5 is sleeved on the pin shaft 1a and fixed, and the other end of the dust cover 5 is sleeved on the outer side of the sleeve body 2 a. The outer side surface of the inner end of the sleeve body 2a is provided with a positioning groove 2a1, the inner side surface of the other end of the dust cover 5 is provided with a convex positioning convex ring 5a, the positioning convex ring 5a is positioned in the positioning groove 2a1, and a gap 9 is formed between the two side surfaces of the positioning convex ring 5a and the positioning groove 2a 1.
A gasket 6 made of plastic is arranged between the outer end surface of the pin shaft 1a and the inner end surface of the base 2b, and the gasket 6 is made of nylon or polytetrafluoroethylene. The outer edge of the gasket 6 protrudes out of the outer side face of the pin shaft 1a, and the outer end of the roller pin 3 abuts against the outer edge of the gasket 6. A chamfer angle 1a1 is arranged between the outer side surface of the pin shaft 1a and the outer end surface of the pin shaft 1a, and the pin shaft 1a, the roller pin 3 and the gasket 6 form an annular oil storage cavity 7 at the position of the chamfer angle 1a 1. A groove 2c is formed in the inner surface of the bearing sleeve 2 at the joint of the sleeve body 2a and the base 2b, and the needle roller 3, the gasket 6 and the bearing sleeve 2 enclose an annular oil gathering cavity 8 at the groove 2 c. An oil storage groove 2b1 is arranged at the center of the inner end face of the base part 2b, an oil through hole 6a is arranged at the center of the gasket 6, an oil storage groove 1a2 is arranged on the outer end face of the pin shaft 1a, and the oil storage groove 1a2 and the oil through hole 6a are communicated with the oil storage groove 2b1 in sequence. The outer end face of the pin shaft 1a is further provided with an oil passing groove 1a3 for communicating the oil storage cavity 7 with the oil passing hole 6a, the number of the oil passing grooves 1a3 can be one or more, and the oil passing grooves 1a3 are uniformly distributed on the pin shaft 1a along the circumferential direction when a plurality of oil passing grooves 1a3 are provided, and generally two, three or four oil passing grooves can be provided. The inner end surface of the base part 2b is further provided with oil passing grooves 2b2 for communicating the oil storage groove 2b1 with the oil collecting cavity 8, the number of the oil passing grooves 2b2 can be one or more, and the oil passing grooves 2b2 can be uniformly distributed on the bearing sleeve 2 along the circumferential direction when the number is multiple, and generally two, three or four oil passing grooves are provided.
The gasket 6 separates the outer end of the pin shaft 1a from the base 2b of the bearing sleeve 2, so that frictional wear between the outer end of the pin shaft 1a and the base 2b of the bearing sleeve 2 is avoided, and meanwhile, the gasket 6 also separates the outer end of the roller pin 3 from the base 2b of the bearing sleeve 2, so that frictional wear between the outer end of the roller pin 3 and the base 2b of the bearing sleeve 2 is avoided, so that the service lives of the pin shaft 1a and the roller pin 3 are prolonged, and the service life of the universal joint is prolonged. The arrangement of the dust cover 5 and the oil seal 4 ensures the sealing effect between the bearing sleeve 2 and the pin shaft 1a, avoids the damage to the roller pin 3, the pin shaft 1a and the bearing sleeve 2 caused by the external sundries entering the roller pin 3, and is beneficial to improving the service life of the universal joint. The oil storage groove 2b1 and the oil storage groove 1a2 can supplement lubricating grease to the oil storage cavity 7 and the oil collecting cavity 8, so that the needle roller 3 is kept in a lubricating state, and the service life of the universal joint pin is prolonged.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A cross axle universal joint comprises a body (1), wherein four pin shafts (1a) are arranged on the body (1), each pin shaft (1a) is sleeved with a bearing sleeve (2), each bearing sleeve (2) comprises a cylindrical sleeve body (2a) and a base (2b) for sealing the outer end of each sleeve body (2a), a roller pin (3) is arranged between the inner side surface of each sleeve body (2a) and the outer side surface of each pin shaft (1a), an oil seal (4) is arranged between the inner end of each sleeve body (2a) and each pin shaft (1a), the cross axle universal joint is characterized in that a gasket (6) made of plastic is arranged between the outer end surface of each pin shaft (1a) and the inner end surface of each base (2b), the outer edge of each gasket (6) protrudes out of the outer side surface of each pin shaft (1a), and the outer end of each roller pin (3) abuts against the outer edge of each gasket (6), a chamfer (1a1) is arranged between the outer side face of the pin shaft (1a) and the outer end face of the pin shaft (1a), an annular oil storage cavity (7) is formed by enclosing the pin shaft (1a), the roller pin (3) and the gasket (6) at the chamfer (1a1), an oil storage groove (2b1) is arranged at the center of the inner end face of the base part (2b), an oil through hole (6a) communicated with the oil storage groove (2b1) is arranged at the center of the gasket (6), and an oil through groove (1a3) communicated with the oil storage cavity (7) and the oil through hole (6a) is arranged on the outer end face of the pin shaft (1 a).
2. The universal joint according to claim 1, wherein a groove (2c) is formed in the inner surface of the bearing sleeve (2) at the joint of the sleeve body (2a) and the base (2b), and the needle roller (3), the gasket (6) and the bearing sleeve (2) enclose an annular oil collecting cavity (8) at the groove (2 c).
3. The universal joint according to claim 2, wherein an oil passing groove (2b2) communicating the oil storage groove (2b1) and the oil collecting groove (8) is further provided on the inner end surface of the base portion (2 b).
4. A universal joint according to any of claims 1-3, wherein said spacer (6) is made of nylon or teflon.
5. The universal joint according to any one of claims 1 to 3, wherein an oil storage groove (1a2) is further formed on the outer end surface of the pin shaft (1a), and the oil storage groove (1a2) is communicated with the oil through hole (6 a).
6. The universal joint according to any one of claims 1 to 3, wherein the oil seal (4) comprises a frame (4a) and a sealing ring (4b) fixed as a whole, the frame (4a) is inserted into the inner end of the sleeve body (2a) and fixed, the inner side surface of the sealing ring (4b) is provided with a convex sealing ring (4b1), the sealing ring (4b1) is attached to the outer side surface of the pin shaft (1a) and forms a seal, a dust cover (5) is further connected between the inner end of the pin shaft (1a) and the inner end of the sleeve body (2a), one end of the dust cover (5) is sleeved on the pin shaft (1a) and fixed, the other end of the dust cover (5) is sleeved on the outer side of the sleeve body (2a), the outer side surface of the inner end of the sleeve body (2a) is provided with a positioning groove (2a1), and the other end of the dust cover (5) is provided with a positioning convex, the positioning convex ring (5a) is positioned in the positioning groove (2a1), and a gap (9) is arranged between the positioning convex ring (5a) and two side surfaces of the positioning groove (2a 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020483175.3U CN211852547U (en) | 2020-04-03 | 2020-04-03 | Cross axle universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020483175.3U CN211852547U (en) | 2020-04-03 | 2020-04-03 | Cross axle universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852547U true CN211852547U (en) | 2020-11-03 |
Family
ID=73145076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020483175.3U Active CN211852547U (en) | 2020-04-03 | 2020-04-03 | Cross axle universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458701A (en) * | 2022-01-19 | 2022-05-10 | 台州品佳汽配有限公司 | High-strength universal joint and processing technology thereof |
-
2020
- 2020-04-03 CN CN202020483175.3U patent/CN211852547U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458701A (en) * | 2022-01-19 | 2022-05-10 | 台州品佳汽配有限公司 | High-strength universal joint and processing technology thereof |
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