CN113483032A - Bearing clearance adjusting mechanism for universal joint cross and assembling method thereof - Google Patents
Bearing clearance adjusting mechanism for universal joint cross and assembling method thereof Download PDFInfo
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- CN113483032A CN113483032A CN202110841489.5A CN202110841489A CN113483032A CN 113483032 A CN113483032 A CN 113483032A CN 202110841489 A CN202110841489 A CN 202110841489A CN 113483032 A CN113483032 A CN 113483032A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
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Abstract
A bearing clearance adjusting mechanism of a universal joint cross comprises a bearing cover, a thrust cover, an adjusting screw and a clamp spring, wherein the thrust cover, the adjusting screw and the clamp spring are arranged in an annular groove in an inner hole of a universal joint fork lug, the outer circle surface of the bearing cover is matched with the universal joint fork lug, the outer end surface of the bottom of the bearing cover is contacted with the inner side surface of the clamp spring, one end of the thrust cover is matched with an assembling hole at the end part of a cross shaft, the other end of the thrust cover extends to the inner end surface of the bottom, the assembling hole is communicated with a threaded hole on the cross shaft, one end of the adjusting screw is contacted with the thrust cover, the other end of the adjusting screw is matched with the threaded hole, an adjusting hole communicated with a first center hole on the thrust cover and a second center hole on the bottom is formed in the center of the adjusting screw, the thrust cover and the adjusting screw are arranged in the cross shaft, the cross shaft is inserted into the universal joint fork lug hole through the bearing cover, the clamp spring is arranged in the clamp spring groove, and finally the gap between the thrust cover and the bearing cover is adjusted. The design not only realizes the high-precision adjustment of the clearance between the cross shaft and the bearing cover, but also improves the assembly efficiency.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a bearing clearance adjusting mechanism of a universal joint pin and an assembling method thereof.
Background
The automobile transmission shaft is generally used as a high-rotating-speed transmission part for connecting an automobile gearbox and a drive axle, the dynamic balance performance of the automobile transmission shaft has great influence on the NVH performance of the whole automobile, a cross shaft type universal joint is used as a key part of the transmission shaft, a gap between a cross and a bearing cover of the automobile transmission shaft can cause severe vibration in high-speed rotation of the automobile transmission shaft, the gap is formed by randomly accumulating the axial tolerance sizes of up to 6 parts, the smaller tolerance of each part still accumulates a larger gap value, the currently adopted method is to improve the processing precision of each part, and the axial gap between the cross shaft and the bearing cover is controlled by a snap spring thickness grouping and matching method, the method still has the defects that the gap control requirement is smaller, the snap springs with various thickness sizes are required to be matched, the gap is formed after the assembly of different parts is completed, and the gap needs to be judged after the first assembly, if the clearance is too large or the fit interference is large, good fit precision can be obtained only by adapting the clamp spring for the second time or a plurality of times, and the clearance cannot be eliminated, so that the production and assembly efficiency of the universal joint is low, and the obtained assembly precision is limited.
Chinese patent: no. CN213117196, the utility model discloses a bearing through-hole formula subdivision jaw cross universal joint of 5 months 4 days in 2021 year in the grant notice day, including cross axle and two jaws, the cross axle includes the body, installs thrust mechanism and the bearing of suit on the body journal on the body shaft shoulder, thrust mechanism is including installing the holder on body shaft shoulder terminal surface and installing the antifriction plate on the holder, and the holder is the ring form, and its one side of keeping away from the body shaft shoulder is provided with the ring shape recess that is used for installing the antifriction plate, and the antifriction plate is the ring form. Although this structure can adjust the axial clearance of cross axle and jaw through set up thrust mechanism at the shaft shoulder, this thrust mechanism mainly realizes this effect through the mode of filling the gap, when adjusting the clearance, needs to disassemble the thrust mechanism of corresponding size after the universal joint, and assembly efficiency is lower.
Disclosure of Invention
The invention aims to provide a bearing clearance adjusting mechanism of a universal joint pin and an assembling method thereof, which can effectively improve the assembling efficiency, aiming at the problems in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a bearing clearance adjusting mechanism of a universal joint cross comprises a bearing cover matched with the end part of a cross shaft, a thrust cover positioned in the bearing cover, an adjusting screw, a clamp spring positioned in an annular groove formed on the inner wall of an ear hole of a universal joint yoke, the outer circle surface of the bearing cover is matched with the inner wall of the lug hole of the universal joint fork, the outer end surface of the bottom of the bearing cover is contacted with the inner side surface of the clamp spring, one end of the thrust cap is inserted and matched with an assembling hole axially arranged at the end part of the cross shaft, the other end of the thrust cap axially extends to the inner end surface of the bottom part, the assembling hole is communicated with a threaded hole formed in the cross shaft, one end of the adjusting screw is contacted with the inner side surface of the thrust cover, the other end of the adjusting screw is matched with the threaded hole, and the center of the adjusting screw is provided with an adjusting hole communicated with a first center hole arranged on the thrust cover and a second center hole arranged on the bottom.
The adjusting hole is of a hexagonal structure matched with the hexagonal adjusting wrench.
The diameters of the first central hole and the second central hole are larger than the diameter of the adjusting hole.
The adjusting mechanism further comprises a dustproof cover matched with the second center hole.
The two ends of the threaded hole are respectively communicated with the assembly holes at the two opposite ends of the cross shaft, and the inner diameter of each assembly hole is larger than that of the threaded hole.
The second central hole, the first central hole and the adjusting hole are coaxially arranged, and the bearing cover is sleeved outside the cross shaft.
An assembling method of a bearing clearance adjusting mechanism of a universal joint pin comprises the following steps: firstly, respectively arranging the thrust cap and the adjusting screw at corresponding positions in the cross shaft, then inserting the cross shaft into an ear hole of the universal joint fork through the bearing cap, installing the clamp spring into the clamp spring groove, then sequentially penetrating the hexagonal adjusting wrench through the second center hole and the first center hole and then inserting the hexagonal adjusting wrench into the assembling hole, and adjusting a gap between the thrust cap and the bearing cap by screwing the hexagonal adjusting wrench so as to complete assembly.
The assembly method further comprises: the clearance between the bearing cover and the clamp spring is adjusted by screwing a hexagonal adjusting wrench.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a bearing clearance adjusting mechanism of a universal joint of a cross shaft, which comprises a bearing cover matched with the end part of the cross shaft, a thrust cover positioned in the bearing cover, an adjusting screw and a snap spring positioned in an annular groove formed in the inner wall of an ear hole of a universal joint fork, wherein the outer circle surface of the bearing cover is matched with the inner wall of the ear hole of the universal joint fork, the outer end surface of the bottom of the bearing cover is contacted with the inner side surface of the snap spring, one end of a thrust cover is inserted and matched with an assembling hole axially formed in the end part of the cross shaft, the other end of the thrust cover axially extends to the inner end surface of the bottom of the bearing cover, the assembling hole is communicated with a threaded hole formed in the cross shaft, one end of the adjusting screw is contacted with the inner side surface of the thrust cover, the other end of the adjusting screw is matched with the threaded hole, and the center of the adjusting screw is provided with an adjusting hole communicated with a first center hole formed in the thrust cover and a second center hole formed in the bottom, according to the structure, the gap between the thrust cover and the bearing cover, namely the gap between the cross shaft and the bearing cover, can be adjusted to any value through the adjusting screw, so that on one hand, the high precision of assembly can be ensured, the vibration noise generated by the gap when the transmission shaft runs at a high speed is avoided, the stability of the dynamic balance characteristic of the transmission shaft is reliably ensured, the resonance vibration of parts with high rotating speed is avoided, the processing precision of 6 parts related to the gap can be reduced to a certain extent, and the processing cost of the parts is reduced; on the other hand, the structure can finish assembly and clearance adjustment at one time, does not need secondary disassembly and assembly parts, and effectively improves the assembly efficiency. Therefore, the invention not only realizes the high-precision adjustment of the clearance between the cross shaft and the bearing cover, but also improves the assembly efficiency.
Drawings
Fig. 1 is a schematic view of an assembly structure of the present invention.
Fig. 2 is an exploded view of the structure of the present invention.
In the figure, a bearing cover 1, a bottom plate 11, a second center hole 111, a thrust cover 2, a first center hole 21, an adjusting screw 3, an adjusting hole 31, a clamp spring 4, a cross shaft 5, an assembling hole 51, a threaded hole 52, a universal joint fork 6, an annular groove 61, a hexagonal adjusting wrench 7 and a dust cover 8.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a bearing clearance adjusting mechanism for a universal joint cross comprises a bearing cover 1 matched with the end of a cross shaft 5, a thrust cover 2 positioned inside the bearing cover 1, an adjusting screw 3, and a snap spring 4 positioned in an annular groove 61 formed on the inner wall of an ear hole of a universal joint fork 6, wherein the outer circle surface of the bearing cover 1 is matched with the inner wall of the ear hole of the universal joint fork 6, the outer end surface of the bottom 11 of the bearing cover 1 is contacted with the inner side surface of the snap spring 1, one end of the thrust cover 2 is inserted and matched with an assembling hole 51 axially formed on the end of the cross shaft 5, the other end of the thrust cover 2 axially extends to the inner end surface of the bottom 11, the assembling hole 51 is communicated with a threaded hole 52 formed on the cross shaft 5, one end of the adjusting screw 3 is contacted with the inner side surface of the thrust cover 2, and the other end of the adjusting screw 3 is matched with the threaded hole 52, and the center of the adjusting screw 3 is provided with an adjusting hole 31 communicated with a first central hole 21 arranged on the thrust cover 2 and a second central hole 111 arranged on the bottom 11.
The adjusting hole 31 is of a hexagonal structure matched with the hexagonal adjusting wrench 7.
The diameters of the first central hole 21 and the second central hole 111 are larger than or equal to the diameter of the adjusting hole 31.
The adjusting mechanism further comprises a dustproof cover 8 matched with the second center hole 21.
Both ends of the screw hole 52 communicate with the fitting holes 51 at the opposite ends of the cross shaft 5, respectively, and the inner diameter of the fitting hole 51 is larger than that of the screw hole 52.
The second central hole 111, the first central hole 21 and the adjusting hole 31 are coaxially arranged, and the bearing cover 1 is sleeved outside the cross shaft 5.
An assembling method of a bearing clearance adjusting mechanism of a universal joint pin comprises the following steps: firstly, the thrust cap 2 and the adjusting screw 3 are respectively arranged at corresponding positions in the cross shaft 5, then the cross shaft 5 is inserted into an ear hole of the universal joint fork 6 through the bearing cap 1, the clamp spring 4 is arranged in the clamp spring groove 61, then the hexagonal adjusting wrench 7 sequentially penetrates through the second center hole 111 and the first center hole 21 and then is inserted into the assembling hole 51, and the clearance between the thrust cap 2 and the bearing cap 1 is adjusted by screwing the hexagonal adjusting wrench 7 to complete assembly.
The assembly method further comprises: the clearance between the bearing cover 1 and the clamp spring 4 is adjusted by screwing the hexagonal adjusting wrench 7.
The principle of the invention is illustrated as follows:
the invention provides a bearing clearance adjusting mechanism of a universal joint cross, which pushes a thrust cover 2 to move by adjusting an adjusting screw 3, when the clearance between the thrust cover 2 and a bearing cover 1 needs to be eliminated, the adjusting screw 3 is screwed to move the thrust cover 2 to prop against the bearing cover 1, the bearing cover 1 moves outwards to prop against a snap spring 4, the moment of a hexagonal adjusting wrench 7 is obviously increased and the rotation angle is limited, a cross shaft 5 is connected with the adjusting screw 3 through threads, the adjusting screw 3 props against the thrust cover 2, and the thrust cover 2 is in close contact with the bearing cover 1, so that the axial displacement of the cross shaft 5 relative to the bearing cover 1 is eliminated; when a certain gap is required to be ensured between the cross shaft 5 and the bearing cover 1, the adjusting screw 3 is reversely screwed for a certain angle, the reserved gap can be determined according to the screw pitch transmission parameter of the screw, the dustproof cover 8 is covered after the gap adjustment is finished, and the assembly and the gap adjustment of the universal joint are completed. The structure can meet the requirement of adjusting and controlling the clearance randomly according to the requirement, and the problem of low assembly efficiency is solved.
Example 1:
referring to fig. 1 and 2, a bearing clearance adjusting mechanism for a universal joint cross comprises a bearing cover 1 sleeved outside the end of a cross shaft 5, a thrust cover 2 positioned inside the bearing cover 1, an adjusting screw 3, a snap spring 4 positioned in an annular groove 61 formed in the inner wall of an ear hole of a universal joint fork 6, a hexagonal adjusting wrench 7 and a dust cover 8, wherein the outer circle surface of the bearing cover 1 is matched with the inner wall of the ear hole of the universal joint fork 6, the outer end surface of the bottom 11 of the bearing cover 1 is contacted with the inner side surface of the snap spring 4, one end of the thrust cover 2 is inserted and matched with an assembling hole 51 axially formed in the end of the cross shaft 5, the other end of the thrust cover 2 axially extends to the inner end surface of the bottom 11, two ends of a threaded hole 52 formed in the cross shaft 5 are respectively communicated with assembling holes 51 positioned at two opposite ends of the cross shaft 5, one end of the adjusting screw 3 is contacted with the inner side surface of the thrust cover 2, the other end of the adjusting screw 3 is inserted and matched with the threaded hole 52, the inner diameter of the assembling hole 51 is larger than that of the threaded hole 52, the center of the adjusting screw 3 is provided with an adjusting hole 31 communicated with a first central hole 21 formed in the thrust cover 2 and a second central hole 111 formed in the bottom plate 11, the second central hole 111, the first central hole 21 and the adjusting hole 31 are coaxially arranged, the diameters of the first central hole 21 and the second central hole 111 are larger than that of the adjusting hole 31, the adjusting hole 31 is of a hexagonal structure matched with the hexagonal adjusting wrench 7, and the dust cover 8 is matched with the second central hole 21.
The assembling method of the bearing clearance adjusting mechanism of the universal joint pin comprises the following steps: firstly, the thrust cover 2 and the adjusting screw 3 are respectively arranged at corresponding positions in the cross shaft 5, then the cross shaft 5 is inserted into an ear hole of the universal joint fork 6 through the bearing cover 1, the clamp spring 4 is arranged in the clamp spring groove 61, then the hexagonal adjusting wrench 7 sequentially penetrates through the second center hole 111 and the first center hole 21 and then is inserted into the assembling hole 51, and the clearance between the cross shaft 5 and the bearing cover 1 and the clearance between the bearing cover 1 and the clamp spring 4 are adjusted by screwing the hexagonal adjusting wrench 7 to complete assembly.
Claims (8)
1. The utility model provides a cross universal joint bearing clearance adjustment mechanism which characterized in that:
the adjusting mechanism comprises a bearing cover (1) matched with the end part of a cross shaft (5), a thrust cover (2) positioned in the bearing cover (1), an adjusting screw (3) and a clamp spring (4) positioned in an annular groove (61) formed in the inner wall of an ear hole of a universal joint fork (6), the outer circle surface of the bearing cover (1) is matched with the inner wall of the ear hole of the universal joint fork (6), the outer end surface of the bottom (11) of the bearing cover (1) is contacted with the inner side surface of the clamp spring (1), one end of the thrust cover (2) is inserted and matched with an assembling hole (51) axially formed in the end part of the cross shaft (5), the other end of the thrust cover (2) axially extends to the inner end surface of the bottom (11), the assembling hole (51) is communicated with a threaded hole (52) formed in the cross shaft (5), one end of the adjusting screw (3) is contacted with the inner side surface of the thrust cover (2), the other end of the adjusting screw (3) is matched with the threaded hole (52), and the center of the adjusting screw (3) is provided with an adjusting hole (31) which is communicated with a first central hole (21) arranged on the thrust cover (2) and a second central hole (111) arranged on the bottom (11).
2. The gap adjustment mechanism for a universal joint cross bearing according to claim 1, wherein: the adjusting hole (31) is of a hexagonal structure matched with the hexagonal adjusting wrench (7).
3. A universal joint pin bearing play adjusting mechanism according to claim 1 or 2, wherein: the diameters of the first central hole (21) and the second central hole (111) are larger than the diameter of the adjusting hole (31).
4. A universal joint pin bearing play adjusting mechanism according to claim 1 or 2, wherein: the adjusting mechanism further comprises a dustproof cover (8) matched with the second center hole (21).
5. A universal joint pin bearing play adjusting mechanism according to claim 1 or 2, wherein: two ends of the threaded hole (52) are respectively communicated with assembly holes (51) which are positioned at two opposite ends of the cross shaft (5), and the inner diameter of each assembly hole (51) is larger than that of the threaded hole (52).
6. A universal joint pin bearing play adjusting mechanism according to claim 1 or 2, wherein: the second central hole (111), the first central hole (21) and the adjusting hole (31) are coaxially arranged, and the bearing cover (1) is sleeved outside the cross shaft (5).
7. An assembling method of a bearing play adjusting mechanism of a universal joint pin according to claim 2, characterized in that:
the assembling method comprises the following steps: firstly, the thrust cap (2) and the adjusting screw (3) are respectively arranged at corresponding positions in the cross shaft (5), then the cross shaft (5) is inserted into an ear hole of the universal joint fork (6) through the bearing cap (1), the clamp spring (4) is arranged in the clamp spring groove (61), then the hexagonal adjusting wrench (7) sequentially penetrates through the second center hole (111) and the first center hole (21) and then is inserted into the assembling hole (51), and the clearance between the thrust cap (2) and the bearing cap (1) is adjusted by screwing the hexagonal adjusting wrench (7) to complete assembly.
8. The assembling method of a gap adjusting mechanism of a universal joint cross bearing according to claim 7, characterized in that:
the assembly method further comprises: the clearance between the bearing cover (1) and the clamp spring (4) is adjusted by screwing a hexagonal adjusting wrench (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841489.5A CN113483032A (en) | 2021-07-26 | 2021-07-26 | Bearing clearance adjusting mechanism for universal joint cross and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841489.5A CN113483032A (en) | 2021-07-26 | 2021-07-26 | Bearing clearance adjusting mechanism for universal joint cross and assembling method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113483032A true CN113483032A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110841489.5A Pending CN113483032A (en) | 2021-07-26 | 2021-07-26 | Bearing clearance adjusting mechanism for universal joint cross and assembling method thereof |
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| CN (1) | CN113483032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366674A (en) * | 2022-09-29 | 2022-11-22 | 东风汽车股份有限公司 | Automobile transmission shaft assembly and transmission shaft dynamic balance adjusting method |
| CN117066855A (en) * | 2023-10-18 | 2023-11-17 | 万向钱潮股份公司 | Assembling device and assembling method for assembling universal joint and joint fork |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08105452A (en) * | 1994-10-03 | 1996-04-23 | Nakamura Jikou:Kk | Universal joint and manufacture thereof |
| CN2675455Y (en) * | 2003-12-16 | 2005-02-02 | 崔壮勇 | Balance-tab free regulating shaft for drive axle of automobile |
| CN101705970A (en) * | 2009-12-07 | 2010-05-12 | 乐清市联轴器厂 | Double universal joint pin cardan joint |
| CN203442000U (en) * | 2013-08-10 | 2014-02-19 | 通化钢铁股份有限公司 | Device for preventing axial float of cross shaft of universal shaft coupling |
| CN106192684A (en) * | 2015-04-30 | 2016-12-07 | 国机重工集团常林有限公司 | Road roller vehicle frame hinging structure |
-
2021
- 2021-07-26 CN CN202110841489.5A patent/CN113483032A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08105452A (en) * | 1994-10-03 | 1996-04-23 | Nakamura Jikou:Kk | Universal joint and manufacture thereof |
| CN2675455Y (en) * | 2003-12-16 | 2005-02-02 | 崔壮勇 | Balance-tab free regulating shaft for drive axle of automobile |
| CN101705970A (en) * | 2009-12-07 | 2010-05-12 | 乐清市联轴器厂 | Double universal joint pin cardan joint |
| CN203442000U (en) * | 2013-08-10 | 2014-02-19 | 通化钢铁股份有限公司 | Device for preventing axial float of cross shaft of universal shaft coupling |
| CN106192684A (en) * | 2015-04-30 | 2016-12-07 | 国机重工集团常林有限公司 | Road roller vehicle frame hinging structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366674A (en) * | 2022-09-29 | 2022-11-22 | 东风汽车股份有限公司 | Automobile transmission shaft assembly and transmission shaft dynamic balance adjusting method |
| CN115366674B (en) * | 2022-09-29 | 2024-06-04 | 东风汽车股份有限公司 | Automobile transmission shaft assembly and transmission shaft dynamic balance adjusting method |
| CN117066855A (en) * | 2023-10-18 | 2023-11-17 | 万向钱潮股份公司 | Assembling device and assembling method for assembling universal joint and joint fork |
| CN117066855B (en) * | 2023-10-18 | 2024-02-06 | 万向钱潮股份公司 | Assembling device and assembling method for assembling universal joint and joint fork |
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Application publication date: 20211008 |
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