CN213655662U - Reverse gear - Google Patents
Reverse gear Download PDFInfo
- Publication number
- CN213655662U CN213655662U CN202022636479.1U CN202022636479U CN213655662U CN 213655662 U CN213655662 U CN 213655662U CN 202022636479 U CN202022636479 U CN 202022636479U CN 213655662 U CN213655662 U CN 213655662U
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- Prior art keywords
- reverse gear
- annular boss
- tooth
- gear
- gear body
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 54
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a reverse gear, establish main epaxial reverse gear body including being used for the cover, one side of reverse gear body is equipped with annular boss, and annular boss's inside wall is equipped with and passes through bearing normal running fit's shoulder hole with the synchronous ware toothholder, and annular boss lateral wall cover is equipped with the combination tooth of being connected through spline fit. At the in-process of shifting, the combination tooth on the gear of backing a gear passes through spline fit with the gear of backing a gear body and installs, because the existence of controllable spline backlash, consequently, the combination tooth all has certain play for the gear of backing a gear body in the axial with radially to make the combination tooth float in certain extent, reasonable control backlash helps the sliding sleeve and combines the tooth to realize sliding fit, thereby makes the operation of shifting smooth-going more. In addition, because the combination tooth and the reverse gear body belong to two parts, if one part in the combination tooth or the reverse gear is invalid, only the invalid part needs to be replaced, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to a gearbox technical field, more specifically say, relate to a reverse gear.
Background
The heavy truck gearbox has a compact internal space, a main shaft of a reverse gear comprises parts such as gears, various synchronizers, front and rear end bearings, limiting spacers and the like, each of the parts occupies a part of axial space of the main shaft, and the total length of the main shaft system and the length of the main shaft system directly influence the space size and the total weight of the gearbox. The reverse gear in the existing heavy truck gearbox has the disadvantages of unsmooth gear shifting and high maintenance cost after parts fail in the using process.
Therefore, how to solve the problems of unsmooth gear shifting of the reverse gear and high maintenance cost on the premise of not increasing the length of the main shaft is a problem to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a reverse gear makes to shift more smoothly and can reduce the maintenance cost under the prerequisite that does not increase the axial installation space of main shaft.
The structure adopted by the invention provides a solution which saves more space and is easier to install for the matching of the reverse gear and the combining teeth under the condition that the combining teeth are reliably installed
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a reverse gear, establishes the epaxial reverse gear body including being used for the cover, one side of reverse gear body is equipped with annular boss, annular boss's inside wall is equipped with the shoulder hole that passes through bearing normal running fit with the synchronous ware toothholder, annular boss lateral wall cover is equipped with the combination tooth of being connected through spline fit.
Preferably, a shaft shoulder used for propping against the combination teeth to axially position the combination teeth is arranged on the annular boss.
Preferably, a chamfer convenient for inserting the bearing is arranged at the outer edge of the stepped hole.
Preferably, the chamfer is a circular arc chamfer.
Preferably, the chamfer is a right angle chamfer.
Preferably, the outer side wall of the annular boss is provided with a shaft circlip for axially positioning the coupling teeth.
The utility model provides a reverse gear, a be used for installing on the main shaft, in order to accomplish the process of shifting with the cooperation of synchronizer toothholder, at the in-process of shifting, the combination tooth on the reverse gear passes through spline fit installation with reverse gear body, because the existence of controllable spline backlash, it all has certain play for reverse gear body in axial and footpath, thereby make the combination tooth can float at the certain limit, reasonable control backlash, help the sliding sleeve and combine the tooth to realize sliding fit, compare in prior art, because combine tooth and reverse gear body welding to lead to combining the tooth floatability poor for whole, the gear shift power is big etc. phenomenon, the utility model discloses under the prerequisite that does not sacrifice axial installation space, the floatability of combining the tooth has been improved, thereby make the operation of shifting more smooth-going.
In addition, because the combination tooth and the reverse gear body belong to two parts, if one part in the combination tooth or the reverse gear is invalid, only the invalid part needs to be replaced, and the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an assembly schematic diagram of parts such as a reverse gear and a reverse synchronizer provided by the utility model.
The gear comprises a 1-sliding sleeve, a 2-synchronizer gear seat, a 3-deep groove ball bearing, a 4-shaft elastic retainer ring, 5-combination teeth, a 6-reverse gear body and a 61-annular boss.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a reverse gear, under the prerequisite that does not increase the axial installation space of main shaft, make to shift more smoothly and can reduce the maintenance cost.
Referring to fig. 1, fig. 1 is an assembly schematic view of parts such as a reverse gear and a reverse synchronizer provided in the present invention.
The utility model provides a reverse gear, establish main epaxial reverse gear body 6 including being used for the cover, one side of reverse gear body 6 is equipped with annular boss 61, and annular boss 61's inside wall is equipped with and passes through bearing normal running fit's shoulder hole with synchronizer toothholder 2, and annular boss 61 lateral wall cover is equipped with the combination tooth 5 of being connected through the spline fit.
As shown in fig. 1, the synchronizer gear holder 2 is coupled with a main shaft through a spline, the main shaft is not drawn, the axis of the main shaft is overlapped with a two-dot chain line, the reverse gear body 6 is sleeved on the main shaft through an inner hole, the axial direction of the reverse gear body 6 is positioned by two gear pads, and the radial direction of the reverse gear body 6 is matched with reverse idle gears arranged at two opposite sides.
The sliding sleeve 1 is in sliding fit with the synchronizer toothholder 2 through a spline, namely the sliding sleeve 1 can slide on the synchronizer toothholder 2 along the axial direction, and the sliding sleeve 1 slides to be matched with the combination teeth 5 to complete a synchronous stroke, namely a gear shifting process; the reverse gear body 6 and the synchronizer tooth holder 2 are in transition fit connection with the inner ring and the outer ring of the deep groove ball bearing 3, and the floating of the gear is ensured by a clearance; the combination teeth 5 and the reverse gear body 6 are firstly matched through splines, and then the axial locking is completed through the elastic retainer ring 4 for the shaft.
The utility model provides a reverse gear, a be used for installing on the main shaft, in order to accomplish the process of shifting with the cooperation of synchronous ware toothholder 2, at the in-process of shifting, combine tooth 5 on the reverse gear and install through the spline fit when reversing gear body 6, because the existence of controllable spline backlash, combine tooth 5 for reverse gear body 6 all have certain play in the axial with footpath, thereby make and combine tooth 5 can float at the certain limit, the reasonable control backlash helps sliding sleeve 1 and combine tooth 5 to realize sliding fit, compare in prior art, because combine tooth 5 and reverse gear body 6 welding to lead to combining 5 floatability of tooth poor for whole, the gear shift power phenomenon such as big, the utility model discloses under the prerequisite that does not sacrifice axial installation space, the floatability that combines tooth 5 has been improved, thereby make the operation of shifting more smooth-going.
In addition, because the combination tooth 5 and the reverse gear body 6 belong to two parts, if one part in the combination tooth 5 or the reverse gear is invalid, only the invalid part needs to be replaced, and the maintenance cost is reduced.
On the basis of the above embodiment, in consideration of the specific fitting manner of the coupling teeth 5 with the reverse gear body 6, it is preferable that the annular boss 61 is provided with a shoulder for abutting against the coupling teeth 5 to axially position the coupling teeth 5. Specifically, the shoulder may be another annular table disposed along the outer edge of the annular boss 61 of the reverse gear body 6 to abut against the engaging teeth 5 and axially position the engaging teeth 5.
On the basis of the above embodiment, it is preferable that the outer edge of the stepped hole is provided with a chamfer for facilitating the insertion of the bearing. To facilitate mounting of the bearing. Specifically, the chamfer is a circular arc chamfer or a right angle chamfer.
In addition to any of the embodiments described above, it is preferable that the outer side wall of the annular boss 61 is provided with a circlip 4 for shaft for positioning the coupling teeth 5 in the axial direction. In this embodiment, adopt the axial retaining ring to carry out axial positioning to combining tooth 5 to guarantee the convenience and the reliability of the dismouting of combining tooth 5.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The reverse gear provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. The utility model provides a reverse gear, its characterized in that establishes main epaxial reverse gear body (6) including being used for the cover, one side of reverse gear body (6) is equipped with annular boss (61), the inside wall of annular boss (61) is equipped with the shoulder hole that passes through bearing normal running fit with synchronous ware toothholder (2), annular boss (61) lateral wall cover is equipped with combination tooth (5) of connecting through the spline fit.
2. The reverse gear according to claim 1, characterized in that the annular boss (61) is provided with a shoulder for abutting against the coupling tooth (5) to axially locate the coupling tooth (5).
3. The reverse gear according to claim 2, wherein a chamfer facilitating insertion of a bearing is provided at an outer edge of the stepped hole.
4. The reverse gear of claim 3, wherein the chamfer is a radiused chamfer.
5. The reverse gear of claim 4, wherein the chamfer is a right angle chamfer.
6. The reverse gear according to any one of claims 1 to 5, characterized in that the outer side wall of the annular boss (61) is provided with a circlip (4) for shaft for axially positioning the coupling tooth (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022636479.1U CN213655662U (en) | 2020-11-13 | 2020-11-13 | Reverse gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022636479.1U CN213655662U (en) | 2020-11-13 | 2020-11-13 | Reverse gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213655662U true CN213655662U (en) | 2021-07-09 |
Family
ID=76684695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022636479.1U Active CN213655662U (en) | 2020-11-13 | 2020-11-13 | Reverse gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213655662U (en) |
-
2020
- 2020-11-13 CN CN202022636479.1U patent/CN213655662U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240926 Address after: 243000 Ma'anshan economic and Technological Development Zone, Anhui Province Patentee after: ANHUI HUALING AUTOMOBILE Co.,Ltd. Country or region after: China Address before: No.318, Shumin Road, industrial zone, Songjiang District, Shanghai, 201612 Patentee before: SHANGHAI SUODA TRANSMISSION MACHINERY Co.,Ltd. Country or region before: China |