CN117072667A - Novel speed reducer shifting fork gear shifting device and assembly method - Google Patents
Novel speed reducer shifting fork gear shifting device and assembly method Download PDFInfo
- Publication number
- CN117072667A CN117072667A CN202311345419.6A CN202311345419A CN117072667A CN 117072667 A CN117072667 A CN 117072667A CN 202311345419 A CN202311345419 A CN 202311345419A CN 117072667 A CN117072667 A CN 117072667A
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- China
- Prior art keywords
- bevel gear
- fork
- shifting
- speed reducer
- gear shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
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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
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a novel speed reducer shifting fork gear shifting device and an assembling method, wherein the novel speed reducer shifting fork gear shifting device comprises a frame body, a shifting rod, a mandrel and a shifting fork, wherein a bevel gear shaft is longitudinally and rotatably arranged on the frame body, the shifting rod is vertically distributed with the bevel gear shaft, one end of the shifting rod is connected with one end of the bevel gear shaft, the other end of the shifting rod is connected with a handle assembly, the mandrel is horizontally and rotatably arranged on the frame body, the mandrel is in transmission connection with the other end of the bevel gear shaft through a transmission piece, the shifting fork is of a semi-annular structure with an upward opening, and the shifting fork is sleeved outside the mandrel through a mounting block. The gear shifting speed reducer has smaller volume, reduced occupied space and lower equipment use cost, and more importantly, the problem that the handle shaft system is parallel to the transmission shaft system is solved, so that an operator can operate the gear shifting speed reducer more safely.
Description
Technical Field
The invention relates to the technical field of speed reducers, in particular to a novel speed reducer shifting fork gear shifting device and an assembly method.
Background
In the modern industrial field, the speed reducer is used as an important transmission part in mechanical equipment, and has the functions of reducing input rotation speed and increasing torque, so that the speed reducer is extremely widely applied. Due to the requirement of the production process, two products with different specifications are produced under the same production condition, and the speed reducer is required to have two output rotating speeds. At this time, although two output speeds can be achieved by using devices such as a variable frequency motor and a frequency converter, the device investment cost and the use maintenance cost are high.
Currently, a speed reducer shifting fork gear shifting device is usually arranged on the same mandrel by adopting a left shifting fork and a right shifting fork and a shifting rod, wherein the left shifting fork and the right shifting fork are connected with the mandrel through keys or expansion sleeves, and the two connecting modes have certain defects, the former requires that the positions of key grooves of the left shifting fork and the right shifting fork are consistent, and the positions of key grooves on the corresponding mandrels are also consistent; the structure of the gear shifting mechanism is relatively complex, the assembly and maintenance are troublesome, in a word, the requirements of two connecting modes on the machining precision of parts are relatively high, the installation and adjustment are troublesome, the left shifting fork and the right shifting fork are easy to generate a plurality of problems such as holding force, the gear shifting effect of the gear of the speed reducer is influenced, the reliability is low, the service life of the speed reducer is seriously influenced, and an operator has certain potential safety hazards when in use.
Disclosure of Invention
Aiming at the problems of the existing speed reducer shifting fork shifting, the novel speed reducer shifting fork shifting device and the assembling method are simple to operate, high in shifting efficiency, low in cost and simple to assemble.
The specific technical scheme is as follows: a novel speed reducer fork gear shifting device, comprising: the rack body is longitudinally provided with a bevel gear shaft in a rotating way; the deflector rod is vertically distributed with the bevel gear shaft, one end of the deflector rod is connected with one end of the bevel gear shaft, and the other end of the deflector rod is connected with a handle assembly; the mandrel is horizontally and rotatably arranged on the frame body, and the mandrel is in transmission connection with the other end of the bevel gear shaft through a transmission piece; the shifting fork is of a semi-annular structure with an upward opening, and is sleeved outside the mandrel through the mounting block.
As a further improvement and optimization of the scheme, the shifting fork and the mounting block are of an integrated structure, and the mounting block is in transmission connection with the mandrel through a first key groove structure.
As a further improvement and optimization of the scheme, the transmission piece is a bevel gear pair.
As a further improvement and optimization of the scheme, the mandrel is in transmission connection with the bevel gear pair through a second key groove structure; the bevel gear pair comprises a driving bevel gear and a driven bevel gear which are meshed with each other, the driving bevel gear is connected with the output end of the bevel gear shaft, and the driven bevel gear is connected with the mandrel through the second key groove structure.
As a further improvement and optimization of the scheme, the deflector rod is connected with the bevel gear shaft through a spline, and the deflector rod is limited with the bevel gear shaft through a retainer ring C in the axial direction.
As a further improvement and optimization of the scheme, the bevel gear shaft is rotationally arranged on the frame body through at least one copper sleeve A, the bevel gear shaft is axially limited by a check ring A, an oil seal is further arranged between the bevel gear shaft and the frame body, and the oil seal, the check ring A and the copper sleeve A are sequentially arranged along the axial direction of the bevel gear shaft.
As a further improvement and optimization of the scheme, two ends of the mandrel are respectively arranged on the frame body in a rotating mode through a copper sleeve B, and the mandrel is limited in the axial direction through a check ring B and the frame body.
As a further improvement and optimization of the scheme, a shifting block is detachably arranged on the inner sides of two ends of the top of the shifting fork.
As a further improvement and optimization of the scheme, the shifting block is connected to the end part of the shifting fork through a pin shaft, and the pin shaft is fixed with the shifting fork through a set screw.
An assembly method comprising the novel speed reducer fork gear shifting device according to any one of the above, the assembly method comprising: step S1: the bevel gear shaft is rotatably arranged on the frame body through the copper sleeve A, and the retainer ring A is utilized to axially limit the bevel gear shaft; step S2: the handle assembly is arranged at one end of the deflector rod, and the other end of the deflector rod is connected to the top of the bevel gear shaft through a spline structure and is axially limited through the retainer ring C; step S3: the mandrel is connected with the output end of the bevel gear shaft through the bevel gear pair, is connected with the mounting block through the first key slot structure, is rotatably mounted on the frame body through the two copper sleeves B again, and is axially limited through the retainer ring B; step S4: the two shifting blocks are respectively arranged at two ends of the shifting fork through one pin shaft, and the two pin shafts are respectively axially fixed through two set screws; step S5: the position of the frame body is manually adjusted, so that the bevel gear pair is well meshed, the shifting fork is rotated through the handle assembly without blocking, and then the frame body is fixed through bolts.
Compared with the prior art, the technical scheme has the following positive effects:
(1) According to the invention, the shift lever is driven to rotate through the handle assembly, and the shift lever sequentially drives the mandrel to rotate through the bevel gear shaft and the transmission piece, so that the mandrel drives the shift fork to rotate, and the shift fork drives the gear sleeve to axially move, thereby achieving the purposes of shifting and speed regulation, reducing the volume of the gear shifting speed reducer, reducing the occupied space, reducing the equipment use cost, and more importantly solving the problem that the handle shaft system is parallel to the transmission shaft system, so that an operator can operate the gear shifting speed reducer more safely.
(2) All parts in the invention can be arranged in a detachable way, and the invention has the advantages of convenient and simple assembly and adjustment, low manufacturing cost, time saving, labor saving, safety and reliability in use and maintenance.
Drawings
FIG. 1 is a schematic diagram of a novel speed reducer fork shifting device;
FIG. 2 is a cross-sectional view of a novel speed reducer fork shifting device according to the present invention;
FIG. 3 is an N-N cross-sectional view of a novel speed reducer fork shifting device of the present invention;
in the accompanying drawings: 1. A case; 2. a handle assembly; 3. a deflector rod; 4. a bevel gear shaft; 5. bevel gear pair; 6. a spline; 7. an oil seal; 8. a retainer ring A; 9. copper bush A; 10. a frame body; 11. a mandrel; 12. a first keyway structure; 13. a second keyway structure; 14. a mounting block; 15. a shifting fork; 16. a shifting block; 17. a pin shaft; 18. a set screw; 19. copper bush B; 20. a retainer ring B; 21. a retainer ring C; 51. a drive bevel gear; 52. driven bevel gears.
Detailed Description
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Fig. 1 is a schematic structural view of a novel gear shifting device for a gear shifting fork of the present invention, fig. 2 is an M-M section view of the novel gear shifting device for a gear shifting fork of the present invention, fig. 3 is an N-N section view of the novel gear shifting device for a gear shifting fork of the present invention, as shown in fig. 1 to 3, showing a novel gear shifting fork of a preferred embodiment, including a frame 10, a shift lever 3, a mandrel 11 and a shift fork 15, wherein the frame 10 is longitudinally rotatably mounted with a bevel gear shaft 4, the shift lever 3 is vertically distributed with the bevel gear shaft 4, one end of the shift lever 3 is connected with one end of the bevel gear shaft 4, the other end is connected with a handle assembly 2, the mandrel 11 is horizontally rotatably mounted on the frame 10, the mandrel 11 is in transmission connection with the other end of the bevel gear shaft 4 through a transmission member, the shift fork 15 is in a semi-annular structure with an upward opening, and the shift fork 15 is sleeved outside the mandrel 11 through a mounting block 14.
In this embodiment, the handle assembly 2 drives the shift lever 3 to rotate, the shift lever 3 sequentially passes through the bevel gear shaft 4 and the transmission piece to drive the mandrel 11 to rotate, so that the mandrel 11 drives the shift fork 15 to rotate, and the shift fork 15 drives the gear sleeve to axially move, thereby achieving the purposes of gear shifting and speed regulation.
Preferably, the frame 10 is fixed to the case 1 by bolts.
Further, as a preferred embodiment, the fork 15 and the mounting block 14 are integrally formed, and the mounting block 14 is in driving connection with the spindle 11 through the first key slot structure 12.
Further, as a preferred embodiment, the transmission member is a bevel gear pair 5.
Further, as a preferred embodiment, the spindle 11 is in transmission connection with the bevel gear pair 5 through a second key slot structure 13; the bevel gear pair 5 comprises a driving bevel gear 51 and a driven bevel gear 52 which are meshed with each other, the driving bevel gear 51 is connected to the output end of the bevel gear shaft 4, and the driven bevel gear 52 is connected with the mandrel 11 through the second key groove structure 13.
Further, as a preferred embodiment, the shift lever 3 is connected with the bevel gear shaft 4 through a spline 6, and the shift lever 3 and the bevel gear shaft 4 are axially limited through a retainer ring C21.
Further, as a preferred embodiment, the bevel gear shaft 4 is rotatably disposed on the frame body 10 through at least one copper sleeve A9, the bevel gear shaft 4 is axially limited with the frame body 10 through a retainer ring A8, and an oil seal 7 is further disposed between the bevel gear shaft 4 and the frame body 10, and the oil seal 7, the retainer ring A8 and the copper sleeve A9 are sequentially disposed along the axial direction of the bevel gear shaft 4.
Further, as a preferred embodiment, two ends of the mandrel 11 are respectively rotatably disposed on the frame 10 through a copper sleeve B19, and the mandrel 11 is axially limited with the frame 10 through a retainer B20.
Further, as a preferred embodiment, a dial 16 is detachably installed on the inner side of both end portions of the fork 15.
Further, as a preferred embodiment, the shifting block 16 is connected to the end of the shifting fork 15 through a pin 17, and the pin 17 is fixed to the shifting fork 15 through a set screw 18.
All parts in this embodiment can be dismantled and set up, and assembly adjustment is convenient simple, low in manufacturing cost, use and maintenance save time, laborsaving, safe and reliable.
An assembling method, comprising the novel gear shifting device of the speed reducer fork 15, comprising the following steps: step S1: the conical gear shaft 4 is rotatably arranged on the frame body 10 through a copper sleeve A9, and the conical gear shaft 4 is axially limited by a retainer ring A8; step S2: the handle component 2 is arranged at one end of the deflector rod 3, and the other end of the deflector rod 3 is connected to the top of the bevel gear shaft 4 through a spline 6 structure and is axially limited through a retainer ring C21; step S3: the mandrel 11 is connected with the output end of the bevel gear shaft 4 through the bevel gear pair 5, the mandrel 11 is connected with the mounting block 14 through the first key groove structure 12, the mandrel 11 is rotatably mounted on the frame body 10 through the two copper sleeves B19 again, and the mandrel 11 is axially limited through the retainer ring B20; step S4: the two shifting blocks 16 are respectively arranged at two end parts of the shifting fork 15 through a pin shaft 17, and the two pin shafts 17 are respectively axially fixed through two set screws 18; step S5: the position of the frame body 10 is manually adjusted so that the bevel gear pair 5 is well meshed, the shifting fork 15 is rotated by the handle assembly 2 without being blocked, and then the frame body 10 is fixed by bolts.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. Novel speed reducer shift fork gearshift, characterized by includes: the rack body is longitudinally provided with a bevel gear shaft in a rotating way; the deflector rod is vertically distributed with the bevel gear shaft, one end of the deflector rod is connected with one end of the bevel gear shaft, and the other end of the deflector rod is connected with a handle assembly; the mandrel is horizontally and rotatably arranged on the frame body, and the mandrel is in transmission connection with the other end of the bevel gear shaft through a transmission piece; the shifting fork is of a semi-annular structure with an upward opening, and is sleeved outside the mandrel through the mounting block.
2. The novel speed reducer fork gear shifting device of claim 1, wherein the fork and the mounting block are of an integrated structure, and the mounting block and the mandrel are in transmission connection through a first key slot structure.
3. The novel speed reducer fork shifting device of claim 2, wherein the transmission is a bevel gear pair.
4. The novel speed reducer fork shifting device according to claim 3, wherein the mandrel is in transmission connection with the bevel gear pair through a second key groove structure; the bevel gear pair comprises a driving bevel gear and a driven bevel gear which are meshed with each other, the driving bevel gear is connected with the output end of the bevel gear shaft, and the driven bevel gear is connected with the mandrel through the second key groove structure.
5. The novel speed reducer fork gear shifting device according to claim 4, wherein the deflector rod is connected with the bevel gear shaft through a spline, and the deflector rod is limited with the bevel gear shaft through a retainer ring C in the axial direction.
6. The novel speed reducer shifting fork gear shifting device according to claim 5, wherein the bevel gear shaft is rotationally arranged on the frame body through at least one copper sleeve A, the bevel gear shaft is axially limited with the frame body through a check ring A, an oil seal is further arranged between the bevel gear shaft and the frame body, and the oil seal, the check ring A and the copper sleeve A are sequentially arranged along the axial direction of the bevel gear shaft.
7. The novel speed reducer shifting fork gear shifting device according to claim 6, wherein two ends of the mandrel are respectively arranged on the frame body in a rotating mode through a copper sleeve B, and the mandrel is limited with the frame body in the axial direction through a check ring B.
8. The novel speed reducer fork shifting device of claim 7, wherein a shifting block is detachably mounted on the inner sides of both ends of the top of the fork.
9. The novel speed reducer fork gear shifting device according to claim 8, wherein the shifting block is connected to the end of the fork through a pin shaft, and the pin shaft is fixed with the fork through a set screw.
10. An assembly method comprising the novel speed reducer fork shifting device of any one of claims 9, the assembly method comprising: step S1: the bevel gear shaft is rotatably arranged on the frame body through the copper sleeve A, and the retainer ring A is utilized to axially limit the bevel gear shaft; step S2: the handle assembly is arranged at one end of the deflector rod, and the other end of the deflector rod is connected to the top of the bevel gear shaft through a spline structure and is axially limited through the retainer ring C; step S3: the mandrel is connected with the output end of the bevel gear shaft through the bevel gear pair, is connected with the mounting block through the first key slot structure, is rotatably mounted on the frame body through the two copper sleeves B again, and is axially limited through the retainer ring B; step S4: the two shifting blocks are respectively arranged at two ends of the shifting fork through one pin shaft, and the two pin shafts are respectively axially fixed through two set screws; step S5: the position of the frame body is manually adjusted, so that the bevel gear pair is well meshed, the shifting fork is rotated through the handle assembly without blocking, and then the frame body is fixed through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311345419.6A CN117072667A (en) | 2023-10-18 | 2023-10-18 | Novel speed reducer shifting fork gear shifting device and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311345419.6A CN117072667A (en) | 2023-10-18 | 2023-10-18 | Novel speed reducer shifting fork gear shifting device and assembly method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117072667A true CN117072667A (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311345419.6A Pending CN117072667A (en) | 2023-10-18 | 2023-10-18 | Novel speed reducer shifting fork gear shifting device and assembly method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117072667A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014043889A (en) * | 2012-08-27 | 2014-03-13 | Aisin Ai Co Ltd | Shifting operation device of automatic transmission |
| CN103758993A (en) * | 2014-01-14 | 2014-04-30 | 河南科技大学 | Cam gear-shifting mechanism for small gearbox |
| CN106195257A (en) * | 2016-08-31 | 2016-12-07 | 苏州绿控传动科技有限公司 | A kind of AMT automatic shifting device |
| CN110107685A (en) * | 2019-06-04 | 2019-08-09 | 郑州机械研究所有限公司 | A kind of double dynamical interlocking-type solid gearshift |
| CN209969203U (en) * | 2019-05-08 | 2020-01-21 | 宁波东力传动设备有限公司 | Rolling mill combined gear box structure with variable speed ratio |
| CN211574173U (en) * | 2019-11-12 | 2020-09-25 | 广东含元工业技术有限公司 | Gear box |
| DE102019123288A1 (en) * | 2019-08-30 | 2021-03-04 | Oechsler Ag | Gear shift for an electromotive auxiliary bicycle drive |
| CN115585255A (en) * | 2022-09-23 | 2023-01-10 | 福建尚锟齿轮箱制造有限公司 | Automatically controlled formula transfer case assembly |
| CN116512893A (en) * | 2023-03-07 | 2023-08-01 | 泰安航天特种车有限公司 | Two-gear hub integrated electric driving wheel set and vehicle comprising same |
-
2023
- 2023-10-18 CN CN202311345419.6A patent/CN117072667A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014043889A (en) * | 2012-08-27 | 2014-03-13 | Aisin Ai Co Ltd | Shifting operation device of automatic transmission |
| CN103758993A (en) * | 2014-01-14 | 2014-04-30 | 河南科技大学 | Cam gear-shifting mechanism for small gearbox |
| CN106195257A (en) * | 2016-08-31 | 2016-12-07 | 苏州绿控传动科技有限公司 | A kind of AMT automatic shifting device |
| CN209969203U (en) * | 2019-05-08 | 2020-01-21 | 宁波东力传动设备有限公司 | Rolling mill combined gear box structure with variable speed ratio |
| CN110107685A (en) * | 2019-06-04 | 2019-08-09 | 郑州机械研究所有限公司 | A kind of double dynamical interlocking-type solid gearshift |
| DE102019123288A1 (en) * | 2019-08-30 | 2021-03-04 | Oechsler Ag | Gear shift for an electromotive auxiliary bicycle drive |
| CN211574173U (en) * | 2019-11-12 | 2020-09-25 | 广东含元工业技术有限公司 | Gear box |
| CN115585255A (en) * | 2022-09-23 | 2023-01-10 | 福建尚锟齿轮箱制造有限公司 | Automatically controlled formula transfer case assembly |
| CN116512893A (en) * | 2023-03-07 | 2023-08-01 | 泰安航天特种车有限公司 | Two-gear hub integrated electric driving wheel set and vehicle comprising same |
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