CN211501575U - Anti-loosening device for main tooth flange nut - Google Patents
Anti-loosening device for main tooth flange nut Download PDFInfo
- Publication number
- CN211501575U CN211501575U CN201922350059.4U CN201922350059U CN211501575U CN 211501575 U CN211501575 U CN 211501575U CN 201922350059 U CN201922350059 U CN 201922350059U CN 211501575 U CN211501575 U CN 211501575U
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- China
- Prior art keywords
- main
- main gear
- nut
- flange
- driving gear
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- Expired - Fee Related
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Abstract
The utility model provides a locking device for a main tooth flange nut, which comprises a main tooth assembly and a locking structure; the main gear assembly comprises a driving gear, a main gear inner bearing and a main gear outer bearing which are sequentially sleeved on a driving gear shaft, a main gear spacer bush arranged between the main gear inner bearing and the main gear outer bearing, a bearing seat sleeved outside the main gear inner bearing and the main gear outer bearing, a flange assembly sleeved on the driving gear shaft and positioned outside the main gear outer bearing, and a flange nut sleeved on the driving gear shaft and locking the flange assembly; the anti-loosening structure is a tooth surface washer which is sleeved on the driving gear shaft between the flange assembly and the flange nut. The utility model discloses simple structure, it is convenient to dismantle the maintenance, can not damage the screw thread during maintenance, repeatedly usable compares in riveting nut in advance, and cancellation owner tooth keyway processing or nut and riveting manufacturing procedure save man-hour, improve work efficiency, can the use standard nut, are favorable to standardized design reduce cost simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the car, concretely relates to locking device for master tooth flange nut.
Background
The main gear assembly is the main part of rear axle main reducer, generally by a pair of tapered roller bearing back-to-back ann change on the main gear, lock by the flange nut again, the check ability of flange nut directly influences the pretightning force of bearing, influences main gear assembly bulk stiffness then, finally influences the main reducer assembly life-span, and current technical scheme generally adopts flange face nut to divide into two kinds of structures of riveting nut in advance and riveting nut after the assembly.
The pre-riveted nut has the following structural disadvantages: the pre-riveting device cannot be repeatedly disassembled, can cause pre-riveting failure after being used for many times, can damage threads in a riveting deformation area, and has poor anti-loosening effect and low reliability; the assembled clinch nut has the following structural disadvantages: the part processing process is complicated, the main tooth part needs to be processed with one more key groove, the installation and the disassembly are inconvenient, the installation needs to be riveted manually to deform, the disassembly needs to separate a deformation area firstly, the disassembly can damage threads, and the repeated use for many times is not available.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem, the utility model provides a stable in structure, simple main tooth flange nut locking device of assembly.
The utility model discloses a solve the technical scheme that the problem that provides adopted and be: a locking device for a main tooth flange nut comprises a main tooth assembly and a locking structure; the main gear assembly comprises a driving gear, a main gear inner bearing and a main gear outer bearing which are sequentially sleeved on a driving gear shaft, a main gear spacer bush arranged between the main gear inner bearing and the main gear outer bearing, a bearing seat sleeved outside the main gear inner bearing and the main gear outer bearing, a flange assembly sleeved on the driving gear shaft and positioned outside the main gear outer bearing, and a flange nut screwed on the driving gear shaft and locking the flange assembly; the anti-loosening structure is a tooth surface washer which is sleeved on the driving gear shaft between the flange assembly and the flange nut.
Further, one side of the tooth surface washer is a wedge-shaped tooth surface, and the other side of the tooth surface washer is a radial serration.
Further, the anti-loosening structure is a pair of tooth surface washers meshed with each other.
Furthermore, the meshed surface of the tooth surface washer is a wedge-shaped tooth surface, and the other surface of the tooth surface washer is a radial serration.
Furthermore, the wedge surface angle of the wedge tooth surface is larger than the lead angle of the driving gear shaft.
The utility model has the beneficial technical effects that: simple structure, it is convenient to dismantle the maintenance, can not damage the screw during maintenance, can used repeatedly, compares in riveting nut in advance, cancels the processing of leading tooth keyway or nut and riveting manufacturing procedure, saves man-hour, improves work efficiency, can use standard nut, is favorable to standardized design reduce cost simultaneously.
Drawings
The technical solution of the present invention will be described in detail with reference to the accompanying drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a tooth surface washer structure according to the present invention;
in the figure: 1. the anti-loosening structure comprises a locking structure, 2, a driving gear, 3, a main gear inner bearing, 4, a main gear outer bearing, 5, a main gear spacer bush, 6, a bearing seat, 7, a flange assembly, 8, a flange nut, 9 and a tooth surface gasket.
Detailed Description
Example 1
A locking device for a main-tooth flange nut as shown in fig. 1 comprises a main-tooth assembly and a locking structure 1; the main gear assembly comprises a driving gear 2, a main gear inner bearing 3 and a main gear outer bearing 4 which are sequentially sleeved on a shaft of the driving gear 2, a main gear spacer 5 arranged between the main gear inner bearing 3 and the main gear outer bearing 4, a bearing seat 6 sleeved outside the main gear inner bearing 3 and the main gear outer bearing 4, a flange assembly 7 sleeved on the shaft of the driving gear 2 and positioned outside the main gear outer bearing 4, and a flange nut 8 which is screwed on the shaft of the driving gear 2 and locks the flange assembly 7; the anti-loosening structure 1 is a tooth surface washer 9, and the tooth surface washer 9 is sleeved on a driving gear shaft between the flange assembly 7 and the flange nut 8.
The nut is cancelled and riveted in advance or the riveting after the assembly, and the anti-loosening structure 1 is adopted, so that the structure is simple, compared with the nut which is riveted in advance, the key groove processing of the main teeth or the riveting processing procedure of the nut is cancelled, the working time is saved, the working efficiency is improved, the pretightening force is increased by utilizing the mechanical structure of the tooth surface to prevent the bolt from loosening, and the standard nut is used, so that the standardized design is facilitated, and the cost is reduced.
Example 2
As shown in fig. 2, as a specific structure of the tooth flank washers 9 in embodiment 1, one side of the tooth flank washer 9 is a wedge-shaped tooth flank and the other side is a radial serration.
Example 3
As a preferable mode of the loosening prevention structure 1 in embodiment 2, as shown in fig. 2, the loosening prevention structure 1 is a pair of tooth surface washers 9 which are engaged with each other.
Example 4
As shown in fig. 2, as a specific configuration of embodiment 3, a pair of tooth surface washers 9 have wedge-shaped tooth surfaces on one surface and radial serrations on the other surface, which are engaged with each other.
Example 5
As shown in fig. 2, as a preferable mode of the embodiment 4, the wedge surface angle of the wedge tooth surface is larger than the lead angle of the driving gear shaft.
Because the wedge face angle is greater than the lead angle of the thread, the wedge-shaped locking effect prevents the flange nut from rotating and loosening, the structure can directly improve the assembly efficiency, simultaneously reduces the quality risk points, and avoids thread damage during later maintenance of the main speed reducer.
After the flange assembly 7 is pressed into the shaft of the driving gear 2, a pair of tooth surface washers 9 are placed, the wedge-shaped tooth surfaces face inwards, the radial fine teeth face outwards, the washers are installed on the shaft rod part of the main gear 2, then the flange nut 8 is installed on the shaft of the main gear 2 in a threaded mode and is screwed down to a proper torque through a torque wrench, the rotating torque of the main gear is within a standard range, and the installation is finished.
The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.
Claims (5)
1. A locking device for a main-tooth flange nut, characterized by: comprises a main gear assembly and an anti-loosening structure; the main gear assembly comprises a driving gear, a main gear inner bearing and a main gear outer bearing which are sequentially sleeved on a driving gear shaft, a main gear spacer bush arranged between the main gear inner bearing and the main gear outer bearing, a bearing seat sleeved outside the main gear inner bearing and the main gear outer bearing, a flange assembly sleeved on the driving gear shaft and positioned outside the main gear outer bearing, and a flange nut screwed on the driving gear shaft and locking the flange assembly; the anti-loosening structure is a tooth surface washer which is sleeved on the driving gear shaft between the flange assembly and the flange nut.
2. A lock for a main-toothed flange nut according to claim 1, characterized in that: the tooth surface washer has one side with wedge tooth surface and the other side with radial serration.
3. A lock for a main-toothed flange nut according to claim 2, characterized in that: the anti-loosening structure is a pair of tooth surface washers meshed with each other.
4. A lock for a main-toothed flange nut according to claim 3, characterized in that: the meshed surface of the tooth surface washer is a wedge-shaped tooth surface, and the other surface of the tooth surface washer is a radial serration.
5. A locking device for a main-toothed flange nut according to claim 4, characterized in that: the wedge surface angle of the wedge-shaped tooth surface is larger than the lead angle of the driving gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350059.4U CN211501575U (en) | 2019-12-24 | 2019-12-24 | Anti-loosening device for main tooth flange nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350059.4U CN211501575U (en) | 2019-12-24 | 2019-12-24 | Anti-loosening device for main tooth flange nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501575U true CN211501575U (en) | 2020-09-15 |
Family
ID=72419037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922350059.4U Expired - Fee Related CN211501575U (en) | 2019-12-24 | 2019-12-24 | Anti-loosening device for main tooth flange nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501575U (en) |
-
2019
- 2019-12-24 CN CN201922350059.4U patent/CN211501575U/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 |
Granted publication date: 20200915 Termination date: 20201224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |