CN210196294U - Universal joint assembly with better sealing performance - Google Patents
Universal joint assembly with better sealing performance Download PDFInfo
- Publication number
- CN210196294U CN210196294U CN201920965746.4U CN201920965746U CN210196294U CN 210196294 U CN210196294 U CN 210196294U CN 201920965746 U CN201920965746 U CN 201920965746U CN 210196294 U CN210196294 U CN 210196294U
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- China
- Prior art keywords
- oil seal
- auxiliary expansion
- annular auxiliary
- annular
- shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a universal joint assembly with better sealing performance, which comprises a cross shaft and a bearing assembly, wherein the cross shaft comprises a shaft body and four pin shafts, and the bearing assembly comprises a shaft sleeve and a roller pin; an oil seal is arranged between the free end of the shaft sleeve and the pin shaft, an oil seal framework for positioning and fixing the oil seal is arranged at the free end of the shaft sleeve, a plurality of annular sealing branch ends are arranged on the inner wall and the outer wall of the oil seal, and a transition sealing element is arranged between the roller pin and the oil seal; the end face of the oil seal corresponding to the transition sealing element is provided with an annular auxiliary expansion groove, the annular auxiliary expansion groove is in a taper shape with the caliber gradually reduced from the end face part of the oil seal to the inside, and the transition sealing element is provided with an annular auxiliary expansion end. The utility model discloses prevent to annotate to the lubricating oil of round pin axle and axle sleeve department of bearing between the two and take place to leak, even the oil blanket when receiving the top of bearing the kingpin and hitting the extrusion, also can its sealed effect of effectual assurance to the lubrication of better assurance universal joint assembly operation, improve its life.
Description
Technical Field
The utility model relates to a universal joint technical field especially relates to a better universal joint assembly of leakproofness.
Background
The universal joint assembly is a joint part of a universal transmission device and is a machine part for realizing variable-angle power transmission. The universal joint assembly comprises a cross shaft and a bearing assembly, the cross shaft comprises a body and four pin shafts on the body, the bearing assembly comprises a shaft sleeve and a roller pin, the shaft sleeve is arranged on the pin shafts, and the roller pin is arranged between the shaft sleeve and the pin shafts; the main roller pins between the pin shaft and the shaft sleeve rotate, so that lubricating oil needs to be filled in the roller pins between the pin shaft and the shaft sleeve to ensure sufficient lubrication, and an oil seal is arranged on the cross shaft in order to prevent the lubricating oil filled in the roller pins from leaking.
Because the stress of high strength has been born the weight of at the transmission shaft moving in-process, the kingpin between axle sleeve and cross axle pin can take place to rock, the kingpin rocks and can cause the top to hit the extrusion to the oil blanket, the leakproofness of current oil blanket structure often is not ideal enough, mounting structure is reasonable inadequately, especially the oil blanket receives the top to hit the extrusion can with the axle sleeve, produce the gap between the round pin axle, thereby cause the lubricating oil of filling to spill, consequently the universal joint assembly can produce great frictional force because of the disappearance of lubricating oil, thereby make the life of cross axle assembly shorten.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that solves a better universal joint assembly of leakproofness prevents that the filling from taking place to leak to the lubricating oil of round pin axle and axle sleeve department of rolling needle between the two, even the oil blanket when receiving the top of rolling needle and hitting the extrusion, also can its sealing effect of effectual assurance to the lubrication of better assurance universal joint assembly operation, improve its life.
In order to solve the technical problem, the utility model adopts the technical scheme that: a universal joint assembly with better sealing performance comprises a cross shaft and a bearing assembly, wherein the cross shaft comprises a shaft body and four pin shafts arranged on the shaft body in an equidistant array mode, and the bearing assembly comprises a shaft sleeve arranged on the pin shafts and roller pins arranged between the shaft sleeve and the pin shafts; an oil seal is arranged between the free end of the shaft sleeve and the pin shaft, an oil seal framework for positioning and fixing the oil seal is arranged at the free end of the shaft sleeve, a plurality of annular sealing branch ends are arranged on the inner wall and the outer wall of the oil seal, and a transition sealing element is arranged between the roller pin and the oil seal; the oil seal is provided with an annular auxiliary expansion groove on the end face corresponding to the transition sealing element, the annular auxiliary expansion groove is a taper with a gradually reduced caliber from the end face part of the oil seal to the inside, an annular auxiliary expansion end is arranged on the end face corresponding to the transition sealing element and the oil seal, and the annular auxiliary expansion end is correspondingly positioned in the annular auxiliary expansion groove.
When the transition sealing element is not pressed by the roller pins, a gap is formed between the lower end face of the transition sealing element and the upper end face of the oil seal, and the distance is formed between the annular auxiliary expansion end and the bottom of the annular auxiliary expansion groove.
Further, the oil blanket skeleton includes fixed part, elastic buffer portion and location support portion, location support portion is provided with the location fixed slot that corresponds the matching with the oil blanket bottom, the buffering clearance has between location support portion and the round pin axle.
Furthermore, the free end of the annular auxiliary expansion end head, which is positioned in the annular auxiliary expansion groove, is arc-shaped, and the bottom of the annular auxiliary expansion groove is also arc-shaped.
Furthermore, an annular expansion inclined plane is arranged at the joint of the transition sealing element and the annular auxiliary expansion end head.
Furthermore, when the transition sealing element is not pressed by the roller pins, the height of a gap between the lower end face of the transition sealing element and the upper end face of the oil seal is equal to the distance between the annular auxiliary expansion end and the bottom of the annular auxiliary expansion groove.
Preferably, the annular sealing branch end is provided with two channels.
The utility model has the advantages that:
compared with the prior art, the utility model has the advantages that the oil seal is arranged between the free end of the shaft sleeve and the pin shaft, the annular sealing branch end arranged on the inner wall and the outer wall of the oil seal is abutted against the inner wall of the shaft sleeve and the outer wall of the pin shaft, and the sealing performance of the lubricating oil at the roller pin is effectively kept; the transmission shaft bears the high-strength stress operation process, the roller pin is rocked to cause the jacking extrusion of the transition sealing element, the annular auxiliary expansion end head at the lower end of the transition element is pushed in the annular auxiliary expansion groove to move, and outward expansion force is generated on two sides of the annular auxiliary expansion groove, so that the annular sealing support ends of the inner wall and the outer wall of the oil seal further support against the inner wall of the shaft sleeve and the outer wall of the pin shaft, the sealing effect of the oil seal is effectively guaranteed, and the leakage of lubricating oil filled at the roller pin position is prevented.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged view of a portion B of fig. 2.
Detailed Description
The invention is further explained by combining the attached drawings.
Referring to fig. 1 to 3, the present invention provides a universal joint assembly with better sealing performance, which includes a cross shaft and a bearing assembly, wherein the cross shaft includes a shaft body 1 and four pin shafts 2 arranged on the shaft body in an equidistant array, and the bearing assembly includes a shaft sleeve 3 arranged on the pin shaft 2 and a needle roller 4 arranged between the shaft sleeve 3 and the pin shaft 2; an oil seal 5 is arranged between the free end of the shaft sleeve 3 and the pin shaft 2, an oil seal framework 6 for positioning and fixing the oil seal 5 is arranged at the free end of the shaft sleeve 3, a plurality of annular sealing branch ends 7 are arranged on the inner wall and the outer wall of the oil seal 5, and the annular sealing branch ends 7 are abutted with the inner wall of the shaft sleeve 3 and the outer wall of the pin shaft 2, so that the sealing effect is realized; a transition sealing element 8 is arranged between the needle roller 4 and the oil seal 5, an annular auxiliary expansion groove 9 is arranged on the end face of the oil seal 5 corresponding to the transition sealing element 8, the annular auxiliary expansion groove 9 is in a tapered shape with the caliber gradually reduced from the end face part to the inside of the oil seal 5, an annular auxiliary expansion end head 10 is arranged on the end face of the transition sealing element 8 corresponding to the oil seal 5, and the annular auxiliary expansion end head 10 is correspondingly positioned in the annular auxiliary expansion groove 9.
When the transition sealing piece 8 is not pressed by the roller pin 4, a gap is reserved between the lower end face of the transition sealing piece 8 and the upper end face of the oil seal 5, and the annular auxiliary expansion end 10 is spaced from the bottom of the annular auxiliary expansion groove 9.
The oil seal framework 6 comprises a fixing part 11, an elastic buffering part 12 and a positioning supporting part 13, and the positioning supporting part 13 is provided with a positioning fixing groove 14 correspondingly matched with the bottom of the oil seal, so that the fixing firmness of the oil seal 5 is further improved; the positioning support part 13 and the pin shaft have a buffer gap 16 therebetween.
The free end of the annular auxiliary expansion end 10, which is positioned in the annular auxiliary expansion groove 9, is arc-shaped, and the bottom of the annular auxiliary expansion groove 9 is also arc-shaped, so that the bottom of the annular auxiliary expansion groove 9 can be prevented from being damaged by friction when the annular auxiliary expansion end 10 is pressed and moved.
The junction of transition sealing member 8 and supplementary expansion end 10 of annular is provided with annular expansion inclined plane 15, can further produce the expansion pressure to the supplementary expansion groove 9 both sides of annular, makes the sealed branch end 7 of annular of the outer wall of oil blanket 5 and the sealed butt of axle sleeve 3 inner wall, 2 outer walls of round pin axle more.
When the transition sealing element 8 is not pressed by the roller pin 4, the height of a gap between the lower end surface of the transition sealing element 8 and the upper end surface of the oil seal 5 is equal to the distance between the annular auxiliary expansion end 10 and the bottom of the annular auxiliary expansion groove 9; the transition sealing piece 8 is prevented from being excessively impacted and squeezed, and the annular auxiliary expansion end head 10 is prevented from damaging the annular auxiliary expansion groove 9.
The annular sealing branch end 7 is provided with two channels.
The working principle of the utility model is as follows:
when the roller pin 4 does not push against and extrude the transition sealing element 8, the annular sealing branch end 7 of the inner wall and the outer wall of the oil seal 5 is abutted against the inner wall of the shaft sleeve 3 and the outer wall of the pin shaft 2, so that the sealing effect is realized; when the roller pin 4 shakes, the transition sealing piece 8 is subjected to top impact extrusion, and when the transition sealing piece 8 is subjected to top impact extrusion, the annular auxiliary expansion end 10 moves in the annular auxiliary expansion groove 9 to generate outward expansion force on two sides of the annular auxiliary expansion groove 9, so that the annular sealing branch ends 7 of the inner wall and the outer wall of the oil seal 5 further abut against the inner wall of the shaft sleeve 3 and the outer wall of the pin shaft 2, and the abutting tightness of the oil seal 5 is improved; when the oil seal 5 is pressed by excessive impact, excessive force is buffered by the elastic buffer portion 12 of the oil seal skeleton 6.
The universal joint assembly with better sealing performance provided by the embodiment of the present invention is described in detail above, and the principle and the implementation mode of the present invention are explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the technical solution disclosed by the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (7)
1. A universal joint assembly with better sealing performance comprises a cross shaft and a bearing assembly, wherein the cross shaft comprises a shaft body and four pin shafts arranged on the shaft body in an equidistant array mode, and the bearing assembly comprises a shaft sleeve arranged on the pin shafts and roller pins arranged between the shaft sleeve and the pin shafts; the method is characterized in that: an oil seal is arranged between the free end of the shaft sleeve and the pin shaft, an oil seal framework for positioning and fixing the oil seal is arranged at the free end of the shaft sleeve, a plurality of annular sealing branch ends are arranged on the inner wall and the outer wall of the oil seal, and a transition sealing element is arranged between the roller pin and the oil seal; the oil seal is provided with an annular auxiliary expansion groove on the end face corresponding to the transition sealing element, the annular auxiliary expansion groove is a taper with a gradually reduced caliber from the end face part of the oil seal to the inside, an annular auxiliary expansion end is arranged on the end face corresponding to the transition sealing element and the oil seal, and the annular auxiliary expansion end is correspondingly positioned in the annular auxiliary expansion groove.
2. A better sealing gimbal assembly as claimed in claim 1, wherein: when the transition sealing element is not pressed by the roller pins, a gap is formed between the lower end face of the transition sealing element and the upper end face of the oil seal, and the distance is formed between the annular auxiliary expansion end and the bottom of the annular auxiliary expansion groove.
3. A better sealing gimbal assembly as claimed in claim 1, wherein: the oil blanket skeleton includes fixed part, elastic buffer portion and location support portion, location support portion is provided with the location fixed slot that corresponds the matching with the oil blanket bottom, the buffering clearance has between location support portion and the round pin axle.
4. A better sealing gimbal assembly as claimed in claim 1, wherein: the free end of the annular auxiliary expansion end head, which is positioned in the annular auxiliary expansion groove, is arc-shaped, and the bottom of the annular auxiliary expansion groove is also arc-shaped.
5. A better sealing gimbal assembly as claimed in claim 1, wherein: and an annular expansion inclined plane is arranged at the joint of the transition sealing element and the annular auxiliary expansion end.
6. A better sealing gimbal assembly as claimed in claim 2, wherein: when the transition sealing element is not pressed by the roller pins, the height of a gap between the lower end face of the transition sealing element and the upper end face of the oil seal is equal to the distance between the annular auxiliary expansion end and the bottom of the annular auxiliary expansion groove.
7. A better sealing gimbal assembly as claimed in claim 1, wherein: the annular sealing branch end is provided with two channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965746.4U CN210196294U (en) | 2019-06-25 | 2019-06-25 | Universal joint assembly with better sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965746.4U CN210196294U (en) | 2019-06-25 | 2019-06-25 | Universal joint assembly with better sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210196294U true CN210196294U (en) | 2020-03-27 |
Family
ID=69871567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920965746.4U Expired - Fee Related CN210196294U (en) | 2019-06-25 | 2019-06-25 | Universal joint assembly with better sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210196294U (en) |
-
2019
- 2019-06-25 CN CN201920965746.4U patent/CN210196294U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 Termination date: 20210625 |