CN212717937U - Gear locking device of gearbox - Google Patents
Gear locking device of gearbox Download PDFInfo
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- CN212717937U CN212717937U CN202021541523.4U CN202021541523U CN212717937U CN 212717937 U CN212717937 U CN 212717937U CN 202021541523 U CN202021541523 U CN 202021541523U CN 212717937 U CN212717937 U CN 212717937U
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- self
- locking
- hole
- interlocking
- shifting fork
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Abstract
The utility model relates to a transmission field, specific gearbox lock shelves device that says so, including transmission housing and declutch shift shaft. The shifting fork shaft horizontally penetrates through a shifting fork shaft hole I of the gearbox shell, and a self-locking deep hole is formed in the shifting fork shaft. And a self-locking spring and a self-locking steel ball are arranged in the self-locking deep hole, and the self-locking steel ball can freely move up and down in the self-locking deep hole. When the self-locking steel ball is positioned at the top, only a part slightly smaller than half of the self-locking steel ball can be positioned at the outer side of the self-locking deep hole. And three self-locking grooves are arranged above the first shifting fork shaft hole of the gearbox shell. The outer side of the gearbox shell is fixedly connected with an interlocking block, a second shifting fork shaft hole is formed in the interlocking block, the interlocking through hole is communicated with the second two adjacent shifting fork shaft holes, an interlocking pin is arranged in the interlocking through hole, and an interlocking groove is formed in the position, opposite to the interlocking through hole, of the shifting fork shaft. The utility model simplifies the structure of the gearbox shell and improves the sealing performance; the processing becomes simpler, and the assembly process becomes simpler and more convenient.
Description
Technical Field
The utility model relates to a transmission field, specific gearbox lock shelves device that says so.
Background
The self-locking principle of the existing gearbox shell is approximately the same as the interlocking principle, the self-locking principle is that a deep hole is processed on the upper part of a shifting fork shaft on the inner wall of the gearbox shell, a self-locking spring and a self-locking steel ball are arranged in the deep hole, three grooves are processed on one surface of each shifting fork shaft opposite to the steel ball, the middle groove is a neutral groove, the grooves on two sides are self-locking grooves, the self-locking steel ball is pressed into the corresponding groove of the shifting fork shaft by the self-locking spring to play a role in locking a gear position, automatic gear shifting and automatic gear falling are prevented, when gear shifting is needed, the axial force applied to the shifting fork shaft by a driver overcomes the self-locking force applied to the self-locking steel ball by the self-locking spring, the self-locking steel ball overcomes the pre-pressure of the self-locking spring to rise, the shifting fork shaft can axially move, and when; the interlocking principle between the shifting fork shafts is that interlocking grooves are respectively arranged on opposite side surfaces of the shifting fork shafts, interlocking holes are arranged between the interlocking grooves on the shell of the gearbox shell, then interlocking steel balls or interlocking pins are arranged in the interlocking holes, when one shifting fork shaft is shifted, the interlocking steel balls or the interlocking pins are squeezed into the adjacent interlocking grooves, so that other shifting fork shafts cannot axially move, and the interlocking effect is achieved. However, the above-mentioned self-locking and interlocking mechanism has several problems: firstly, deep holes are needed to be processed in the gearbox shell to place self-locking springs and self-locking steel balls, so that the processing difficulty is increased; secondly, the sealing performance of the shell of the gearbox is affected by machining the interlocking holes in the shell of the gearbox, and sealing elements (such as bowl-shaped plug sheets) are needed to be used for sealing after the assembly is completed, so that the assembly complexity is increased, and the types of parts for assembling the shell of the gearbox are increased.
Disclosure of Invention
The utility model discloses a gear-box locking device, which simplifies the structure of the gear-box shell and improves the sealing performance; the processing becomes simpler, and the assembly process becomes simpler and more convenient.
The utility model relates to a gearbox lock shelves device, including gearbox casing and declutch shift shaft. The shifting fork shaft horizontally penetrates through a shifting fork shaft hole I of the gearbox shell, a self-locking deep hole with an upward opening and perpendicular to the central axis of the shifting fork shaft is formed in the shifting fork shaft, and a self-locking spring and a self-locking steel ball located at the top of the self-locking spring are arranged in the self-locking deep hole. The diameter of the self-locking deep hole is slightly larger than that of the self-locking steel ball, so that the self-locking steel ball can freely move up and down in the self-locking deep hole, and when the self-locking steel ball is positioned at the top, only a part slightly smaller than half of the self-locking steel ball can be positioned at the outer side of the self-locking deep hole. And three self-locking grooves which are uniformly distributed and matched with the self-locking steel balls are arranged above the shifting fork shaft hole I of the gearbox shell.
Preferably, the diameter of the inlet of the self-locking deep hole is slightly smaller than that of the self-locking steel ball, so that the self-locking steel ball is prevented from being exposed out of the self-locking deep hole.
Preferably, the self-locking deep hole continues to extend downwards to form a self-locking through hole, a self-locking steel ball is arranged at the lower end of the self-locking spring, when the self-locking steel ball at the lower end is positioned at the lowest part, only a part slightly smaller than half of the self-locking steel ball can be positioned at the outer side of the self-locking through hole, and three self-locking grooves which are symmetrical to the three self-locking grooves positioned above the first shifting fork shaft hole are arranged below the first shifting fork shaft hole of the gearbox shell.
Preferably, a self-locking plate is arranged between the self-locking steel ball and the self-locking spring.
Preferably, the self-locking groove and the transmission shell are in circular arc transition.
Preferably, the outer side of the transmission case is fixedly connected with an interlocking block comprising an interlocking through hole, the interlocking block is provided with a second shifting fork shaft hole for the shifting fork shaft to pass through, the interlocking through hole is communicated with the two adjacent second shifting fork shaft holes, an interlocking pin is arranged in the interlocking through hole, and an interlocking groove matched with the interlocking pin is arranged at the position, opposite to the interlocking through hole, on the shifting fork shaft.
Preferably, the interlocking block is provided with a bolt hole, the transmission case is provided with a threaded deep hole matched with the bolt hole, and a bolt penetrates through the bolt hole and is screwed into the threaded deep hole, so that the interlocking block is fixed on the transmission case.
Preferably, an arc transition is adopted between the interlocking groove and the shifting fork shaft.
The utility model has the advantages that: the structure of the gearbox shell is simplified, and the sealing performance of the gearbox shell is improved; the processing becomes simpler, the assembly process becomes simpler and more convenient, the installation and the maintenance of the utility model are facilitated, and the production efficiency is improved; the self-locking force of the utility model can be greatly enhanced by the arrangement of two self-locking steel balls which are opposite from top to bottom.
Drawings
The invention will be further explained with reference to the accompanying drawings, which are simplified schematic drawings and are only schematic illustrations of the basic structure of the invention and do not constitute a limitation of the invention:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of section A-A of FIG. 1;
FIG. 3 is a schematic view of the shift rail of FIG. 2 after axial movement;
fig. 4 is a schematic structural diagram of a second embodiment of the present invention;
in the figure: 1. the self-locking device comprises a gearbox shell, 2, a shifting fork shaft, 31, self-locking deep holes, 32, self-locking through holes, 4, self-locking grooves, 5, self-locking springs, 6, self-locking steel balls, 7, self-locking plates, 8, interlocking grooves, 9, interlocking pins, 10, interlocking blocks, 11, interlocking through holes, 12, bolt holes, 13, threaded deep holes, 14, bolts, 15, a shifting fork shaft hole I, 16 and a shifting fork shaft hole II.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure, and terms such as "upward," "downward," "above," "below," and the like, which refer to orientations, are used solely to describe particular embodiments and are not intended to limit the exemplary embodiments based on the disclosure.
The first embodiment:
fig. 1 shows, the utility model relates to a gearbox locking device, including gearbox housing 1 and declutch shift shaft 2. The shifting fork shaft 2 horizontally penetrates through a shifting fork shaft hole I15 of the gearbox shell 1, a self-locking deep hole 31 with an upward opening and perpendicular to the central axis of the shifting fork shaft 2 is formed in the shifting fork shaft 2, a self-locking spring 5 and a self-locking steel ball 6 located at the top of the self-locking spring 5 are arranged in the self-locking deep hole 31, and a self-locking plate 7 can be arranged between the self-locking steel ball 6 and the self-locking spring 5. The diameter of the self-locking deep hole 31 is slightly larger than that of the self-locking steel ball 6, so that the self-locking steel ball 6 can freely move up and down in the self-locking deep hole 31, when the self-locking steel ball 6 is positioned at the top, only a part slightly smaller than half of the self-locking steel ball 6 can be positioned at the outer side of the self-locking deep hole 31, and three self-locking grooves 4 which are uniformly distributed and matched with the self-locking steel ball 6 are arranged above the shifting fork shaft hole I15 of the gearbox shell 1. And the self-locking groove 4 and the gearbox shell 1 are in arc transition. The diameter of the inlet of the self-locking deep hole 31 is slightly smaller than the diameter of the self-locking steel ball 6, so that the self-locking steel ball 6 is prevented from being exposed out of the self-locking deep hole 31, when the self-locking steel ball 6 is placed into the self-locking deep hole 31 through the inlet, the self-locking steel ball 6 is pressed downwards with force, the self-locking steel ball 6 enters the self-locking deep hole 31 through the inlet by utilizing the micro elastic deformation of the self-locking steel ball 6 and the material near the inlet, and the diameter of the inlet is slightly smaller than the diameter of the self-locking steel ball 6, so that the self.
Axial force is applied to the declutch shift shaft 2, so that the self-locking steel ball 6 overcomes the elastic force from the self-locking spring 5, the self-locking steel ball 6 is pressed into the self-locking deep hole 31, and the declutch shift shaft 2 can move axially; when the shifting fork shaft 2 is pushed to align the self-locking steel ball 6 with the self-locking groove 4, the self-locking steel ball 6 is pressed into the self-locking groove 4 by the self-locking spring 5, so that the self-locking effect is achieved, and the automatic gear-disengaging effect is prevented.
As shown in fig. 2, an interlocking block 10 including an interlocking through hole 11 is fixedly connected to the outer side of the transmission case 1, a second shifting fork shaft hole 16 through which the shifting fork shaft 2 passes is formed in the interlocking block 10, the interlocking through hole 11 is communicated with the two adjacent shifting fork shaft holes 16, an interlocking pin 9 is arranged in the interlocking through hole 11, and an interlocking groove 8 matched with the interlocking pin 9 is formed in the position, opposite to the interlocking through hole 11, of the shifting fork shaft 2. And the interlocking groove 8 and the shifting fork shaft 2 are in arc transition. The interlocking block 10 is provided with a bolt hole 12, the transmission housing 1 is provided with a threaded deep hole 13 matched with the bolt hole 12, and a bolt 14 penetrates through the bolt hole 12 and is screwed into the threaded deep hole 13, so that the interlocking block 10 is fixed on the transmission housing 1.
As shown in fig. 3, when one of the shift fork shafts 2 moves axially, the interlocking pin 9 is pushed out of the interlocking groove 8 of the shift fork shaft 2 and simultaneously pushed into the interlocking groove 8 of the opposite shift fork shaft 2, so that the adjacent shift fork shafts 2 cannot move, and the interlocking function is achieved, and the automatic gear shifting phenomenon can be prevented.
The utility model discloses in, auto-lock spring 5 and auto-lock steel ball 6 set up on declutch shift shaft 2, and auto-lock recess 4 sets up on transmission housing 1, and interlocking piece 10 is installed in the transmission housing 1 outside. The structure of the gearbox shell 1 is simplified, and the sealing performance of the gearbox shell 1 is improved; make processing become simpler, the assembling process becomes more simple and convenient, has also made things convenient for the utility model discloses an installation and maintenance have improved production efficiency.
Second embodiment:
as shown in fig. 4, the self-locking deep hole 31 continues to extend downwards to form a self-locking through hole 32, a self-locking steel ball 6 is also arranged at the lower end of the self-locking spring 5, when the self-locking steel ball 6 at the lower end is positioned at the lowest part, only a part slightly smaller than half of the self-locking steel ball 6 can be positioned at the outer side of the self-locking through hole 32, and three self-locking grooves 4 which are symmetrical to the three self-locking grooves 4 positioned above the first shifting fork shaft hole 15 are arranged below the first shifting fork shaft hole 15 of the gearbox shell 1. The self-locking force of the utility model can be greatly enhanced by the arrangement of two self-locking steel balls 6 which are opposite up and down.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a gearbox lock shelves device, includes gearbox casing and declutch shift shaft, the declutch shift shaft level passes gearbox casing's fork shaft hole one, its characterized in that: the shifting fork shaft is provided with a self-locking deep hole with an upward opening and perpendicular to the central axis of the shifting fork shaft, a self-locking spring and a self-locking steel ball positioned at the top of the self-locking spring are arranged in the self-locking deep hole, the diameter of the self-locking deep hole is slightly larger than that of the self-locking steel ball, so that the self-locking steel ball can freely move up and down in the self-locking deep hole, when the self-locking steel ball is positioned at the top, only a part slightly smaller than half of the self-locking deep hole can be positioned at the outer side of the self-locking deep hole, and three self-locking grooves which are uniformly distributed and matched with the self-locking.
2. A transmission gear-locking device according to claim 1, wherein: the diameter of the inlet of the self-locking deep hole is slightly smaller than that of the self-locking steel ball, so that the self-locking steel ball is prevented from being exposed out of the self-locking deep hole.
3. A transmission gear-locking device according to claim 1, wherein: the self-locking deep hole continues to extend downwards to form a self-locking through hole, a self-locking steel ball is arranged at the lower end of the self-locking spring, when the self-locking steel ball at the lower end is positioned at the lowest part, only a part slightly smaller than half of the self-locking steel ball can be positioned at the outer side of the self-locking through hole, and three self-locking grooves which are symmetrical to the three self-locking grooves positioned above the first shifting fork shaft hole are arranged below the first shifting fork shaft hole of the gearbox shell.
4. A gearbox gear-locking device according to any one of claims 1-3, characterised in that: and a self-locking plate is arranged between the self-locking steel ball and the self-locking spring.
5. A gearbox gear-locking device according to any one of claims 1-3, characterised in that: and the self-locking groove and the gearbox shell are in arc transition.
6. A transmission gear-locking device according to claim 1, wherein: the outer side of the gearbox shell is fixedly connected with an interlocking block comprising an interlocking through hole, a second shifting fork shaft hole for the shifting fork shaft to pass through is formed in the interlocking block, the interlocking through hole is communicated with the two adjacent second shifting fork shaft holes, an interlocking pin is arranged in the interlocking through hole, and an interlocking groove matched with the interlocking pin is formed in the position, opposite to the interlocking through hole, of the shifting fork shaft.
7. The transmission gear-locking device according to claim 6, wherein: the interlocking block is provided with a bolt hole, the gearbox shell is provided with a threaded deep hole matched with the bolt hole, a bolt penetrates through the bolt hole and is screwed into the threaded deep hole, and then the interlocking block is fixed on the gearbox shell.
8. A gearbox gear-locking device according to claim 6 or 7, characterized in that: and the interlocking groove and the shifting fork shaft are in arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021541523.4U CN212717937U (en) | 2020-07-30 | 2020-07-30 | Gear locking device of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021541523.4U CN212717937U (en) | 2020-07-30 | 2020-07-30 | Gear locking device of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717937U true CN212717937U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021541523.4U Active CN212717937U (en) | 2020-07-30 | 2020-07-30 | Gear locking device of gearbox |
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| CN (1) | CN212717937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562321A (en) * | 2021-07-26 | 2021-10-29 | 福清市洪裕塑胶有限公司 | Easily accomodate environment-friendly braided bag |
-
2020
- 2020-07-30 CN CN202021541523.4U patent/CN212717937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562321A (en) * | 2021-07-26 | 2021-10-29 | 福清市洪裕塑胶有限公司 | Easily accomodate environment-friendly braided bag |
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