CN109424742B - Gear shifting actuating mechanism for AMT (automated mechanical Transmission) - Google Patents
Gear shifting actuating mechanism for AMT (automated mechanical Transmission) Download PDFInfo
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- CN109424742B CN109424742B CN201710791567.9A CN201710791567A CN109424742B CN 109424742 B CN109424742 B CN 109424742B CN 201710791567 A CN201710791567 A CN 201710791567A CN 109424742 B CN109424742 B CN 109424742B
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- Prior art keywords
- shifting
- gear shifting
- main body
- fork main
- gear
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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
- 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
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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
- 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
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
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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
- 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
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
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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
- 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
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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
- 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
- F16H2063/3089—Spring assisted shift, e.g. springs for accumulating energy of shift movement and release it when clutch teeth are aligned
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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
- 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
- F16H2063/321—Gear shift yokes, e.g. shift forks characterised by the interface between fork body and shift rod, e.g. fixing means, bushes, cams or pins
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gear shifting actuating mechanism for an AMT (automated mechanical transmission), which comprises a gear shifting driving device, a gear shifting shaft, a shifting fork main body and a synchronizer, wherein the shifting fork main body is connected with the synchronizer and realizes gear shifting operation by the synchronizer, the gear shifting actuating mechanism also comprises a buffer block and a buffer spring, a U-shaped groove is formed in the top surface of the shifting fork main body, bosses are arranged on two end surfaces of the shifting fork main body, a through hole is formed in the shifting fork main body along the axis of the boss, the gear shifting shaft penetrates into the through hole of the shifting fork main body, the buffer block is positioned in the U-shaped groove of the shifting fork main body and penetrates through the gear shifting shaft, the top surface of the buffer block is connected with the gear shifting driving device, the buffer spring penetrates through the gear. The actuating mechanism overcomes the defects of a traditional transmission gear shifting structure, effectively reduces the impact generated by gear shifting operation, optimizes the gear shifting performance of the transmission, improves the comfort of the gear shifting operation, and ensures the reliable and safe driving of a vehicle.
Description
Technical Field
The invention relates to a gear shifting actuating mechanism for an AMT transmission.
Background
The AMT transmission is an improved automatic transmission based on a traditional manual gear type transmission, and combines the advantages of AT and MT; the AMT transmission not only has the advantage of automatic speed change of a common automatic transmission, but also keeps the advantages of high efficiency, low cost, simple structure and easy manufacture of the prior manual transmission gear transmission. However, the AMT is not perfect, and the biggest disadvantage of the AMT is that the gear shifting performance is not good, and power interruption is easily generated during the gear shifting process, so that the extreme speed performance is not good during the gear shifting process.
The transmission is used as an important part in the power transmission process of an automobile, and the quality of the gear shifting performance of the transmission has direct influence on the driving feeling. With the development of science and technology, higher requirements are put forward for the gear shifting speed and the gear shifting comfort of the transmission. Usually, the shifting fork is arranged on the shifting shaft, and the shifting shaft drives or shifts a gear finger to complete the shifting action. Under the application working condition of the manual transmission, the gear shifting rod is pushed by manpower, and a driver adjusts the gear shifting force according to the actual condition during gear shifting, so that the manual transmission belongs to flexible driving; and under AMT derailleur application operating mode, the power of shifting comes from hydraulic pressure, atmospheric pressure or motor drive, and the in-process of shifting directly shifts with the power of shifting of settlement, and current shift fork of shifting is connected with the selector shaft or the finger hard that shifts of shifting in the in-process of shifting, leads to the in-process power of shifting instantaneous too big, and synchronizer synchronization process easily produces the impact to influence the performance of shifting of AMT derailleur.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a gear shifting actuating mechanism for an AMT (automated mechanical transmission), which overcomes the defects of a gear shifting structure of a traditional transmission, effectively reduces the impact generated by gear shifting operation, optimizes the gear shifting performance of the transmission, improves the comfort of the gear shifting operation, and ensures the reliable and safe driving of a vehicle.
In order to solve the technical problem, the gear shifting actuating mechanism for the AMT comprises a gear shifting driving device, a gear shifting shaft, a shifting fork main body and a synchronizer, the shifting fork main body is connected with the synchronizer and realizes the gear shifting operation by the synchronizer, the mechanism also comprises a buffer block and a buffer spring, the top surface of the shifting fork main body is provided with a U-shaped groove, two end surfaces of the U-shaped groove are provided with bosses, the shifting fork main body is provided with a through hole along the axis of the boss, the gear shifting shaft penetrates through the through hole of the shifting fork main body, the buffer block is positioned in the U-shaped groove of the shifting fork main body and penetrates through the gear shifting shaft, the gear shifting driving device is connected with the top surface of the buffer block, the buffer spring penetrates through the gear shifting shaft and is located between the two side surfaces of the buffer block and the two end surfaces of the U-shaped groove of the shifting fork main body, and one end of the buffer spring is sleeved into the boss on the end surface of the U-shaped groove of the shifting fork main body.
Furthermore, the top surface of the buffer block is provided with a U-shaped shifting groove, and the gear shifting driving device is connected with the buffer block through the U-shaped shifting groove.
Further, the compression length of the buffer spring is smaller than the length of the boss.
Furthermore, the shifting fork main body is fixedly connected with the shifting shaft through a pin hole and a pin, and the buffer block is driven by the shifting driving device to move in the U-shaped groove of the shifting fork main body along the shifting shaft.
Furthermore, the buffer block is fixedly connected with the gear shifting shaft through a pin hole and a pin, and the shifting fork main body moves along the gear shifting shaft and is limited by the buffer block.
Further, the gear shifting shaft is fixed to a box body of the AMT, and the shifting fork main body and the buffer block are displaced along the gear shifting shaft.
Further, the gear shifting driving device is a hydraulic driving unit, a pneumatic driving unit or a motor driving unit.
The gear shifting actuating mechanism for the AMT transmission adopts the technical scheme, namely the gear shifting actuating mechanism comprises a gear shifting driving device, a gear shifting shaft, a shifting fork main body and a synchronizer, wherein the shifting fork main body is connected with the synchronizer and realizes gear shifting operation by the synchronizer, the gear shifting actuating mechanism also comprises a buffer block and a buffer spring, a U-shaped groove is formed in the top surface of the shifting fork main body, bosses are arranged on two end surfaces of the shifting fork main body, a through hole is formed in the shifting fork main body along the axis of the boss, the gear shifting shaft penetrates into the through hole of the shifting fork main body, the buffer block is positioned in the U-shaped groove of the shifting fork main body and penetrates through the gear shifting shaft, the top surface of the buffer block is connected with the gear shifting driving device, the buffer spring penetrates through the gear. The actuating mechanism overcomes the defects of a traditional transmission gear shifting structure, effectively reduces the impact generated by gear shifting operation, optimizes the gear shifting performance of the transmission, improves the comfort of the gear shifting operation, and ensures the reliable and safe driving of a vehicle.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic diagram of a shift actuator for an AMT transmission according to the present invention;
fig. 2 is a schematic connection diagram of a shifting fork main body, a buffer block, a buffer spring and a shifting shaft in the mechanism.
Detailed Description
As shown in fig. 1 and 2, the gear shifting actuator for an AMT transmission of the present invention comprises a gear shifting driving device 1, a gear shifting shaft 2, a shifting fork main body 3 and a synchronizer 6, wherein the shifting fork main body 3 is connected with the synchronizer 6 and performs gear shifting operation by the synchronizer 6, the gear shifting actuator further comprises a buffer block 4 and a buffer spring 5, a U-shaped groove is formed on the top surface of the shifting fork main body 3, bosses 31 are formed on two end surfaces of the U-shaped groove, a through hole is formed along the axis of the boss 31 in the shifting fork main body 3, the gear shifting shaft 2 penetrates through the through hole of the shifting fork main body 3, the buffer block 4 is located in the U-shaped groove of the shifting fork main body 3 and penetrates through the gear shifting shaft 2, the top surface of the buffer block 4 is connected with the gear shifting driving device 1, the buffer spring 5 penetrates through the gear shifting shaft 2 and is located between two side surfaces, one end of the buffer spring 5 is sleeved into a boss 31 on the end face of the U-shaped groove of the shifting fork main body 3.
Preferably, the top surface of the buffer block 4 is provided with a U-shaped shifting groove, and the gear shifting driving device 1 is connected with the buffer block 4 through the U-shaped shifting groove. The U-shaped shifting groove is used for reliably transmitting the shifting force of the shifting driving device, so that the buffer block can reliably move along the shifting shaft.
Preferably, the compression length of the buffer spring 5 is smaller than the length of the boss 31. When the buffer block 4 moves along the gear shifting shaft 2 to be in contact with the boss 31 of the shifting fork main body 3, the buffer spring 5 cannot be in the limit compression position, and the distance between the buffer block 4 and the boss 31 of the shifting fork main body is the buffer stroke; during the gear shifting process, the size of the gear shifting force in the buffer stroke depends on the length change of the buffer spring 5; when the elasticity of buffer spring 5 can not realize shifting, buffer block 4 contacts with shifting fork main part boss 31 this moment, exerts the biggest power of shifting and realizes shifting.
Preferably, the fork main body 3 is fixedly connected with the shift shaft 2 through a pin hole 32 and a pin 33, and the cushion block 4 is driven by the gear shifting driving device 1 to move along the shift shaft 2 in a U-shaped groove of the fork main body 3. At the moment, the buffer block 4 serves as a driving part to transmit gear shifting force, the U-shaped shifting groove of the buffer block 4 receives the gear shifting force of the gear shifting driving device 1 moving left and right, the gear shifting force is linearly transmitted to the shifting fork main body 3 and the gear shifting shaft 2 through the buffer spring 5, the shifting fork main body 3 and the gear shifting shaft 2 synchronously act to drive the synchronizer 6 to act, and the gear shifting process is completed.
Preferably, the buffer block 4 is fixedly connected with the shift shaft 2 through a pin hole 41 and a pin 42, and the fork body 3 moves along the shift shaft 2 and is limited by the buffer block 4. At the moment, the gear shifting shaft 2 is used as a driving part to transmit gear shifting force and synchronously acts with the buffer block 4, the gear shifting force is linearly transmitted to the shifting fork main body 3 through the buffer spring 5, and the shifting fork main body 3 acts to drive the synchronizer 6 to act, so that the gear shifting process is completed.
Preferably, the gear shifting shaft 2 is fixed to a box body of the AMT, and the shifting fork main body 3 and the buffer block 4 are displaced along the gear shifting shaft 2. Buffer block 4 and shift fork main part 3 all can remove about following selector shaft 2 this moment, and buffer block 4 still regards as the transmission power of shifting of driving part, and buffer block 4's U type is dialled the groove and is accepted the power of shifting of the drive arrangement 1 that shifts of side-to-side motion, shifts power to shift fork main part 3 through the linear transmission of buffer spring 5, and shift fork main part 3 moves, drives 6 actions of synchronous ware, accomplishes the process of shifting.
Preferably, the gear shift drive 1 is a hydraulic drive unit, a pneumatic drive unit or a motor drive unit.
The shifting force of the shifting driving device in the mechanism is transmitted through the buffer block and the buffer spring, and the shifting fork main body is driven to drive the synchronizer to act, so that the shifting operation is realized, and the impact generated by the shifting operation is effectively reduced; the gear shifting mechanism is improved aiming at the traditional transmission gear shifting mechanism, a buffer structure is added, the hard connection between the traditional gear shifting fork main body and the driving piece of the traditional gear shifting fork main body is changed into elastic connection, the problem of instantaneous overlarge gear shifting force in the gear shifting process of the AMT transmission is effectively solved, the stress of the gear shifting fork main body is optimized into linear stress, and the gear shifting impact caused by instantaneous overlarge gear shifting force is reduced; meanwhile, the mechanism is simple in structure, convenient to arrange and easy to apply, improves the comfort of gear shifting operation, and ensures reliable and safe driving of the vehicle.
Claims (6)
1. The utility model provides a shift actuating mechanism for AMT derailleur, includes gear shift drive arrangement, selector shaft, shift fork main part and synchronous ware, the shift fork main part is connected the synchronous ware realizes shifting operation by the synchronous ware, its characterized in that: the shifting fork is characterized by further comprising a buffering block and a buffering spring, wherein a U-shaped groove is formed in the top surface of the shifting fork main body, bosses are arranged on two end faces of the U-shaped groove, a through hole is formed in the shifting fork main body along the axis of the boss, the gear shifting shaft penetrates into the through hole of the shifting fork main body, the buffering block is located in the U-shaped groove of the shifting fork main body and penetrates into the gear shifting shaft, the top surface of the buffering block is connected with the gear shifting driving device, the buffering spring penetrates into the gear shifting shaft and is located between the two end faces of the two side faces of the buffering block and the two end faces of the U-shaped groove of the shifting fork main body, one end of the buffering spring is.
2. The shift actuator mechanism for an AMT transmission according to claim 1, wherein: the top surface of the buffer block is provided with a U-shaped shifting groove, and the gear shifting driving device is connected with the buffer block through the U-shaped shifting groove.
3. The shift actuator mechanism for an AMT transmission according to claim 1 or 2, characterized in that: the shifting fork main body is fixedly connected with the shifting shaft through a pin hole and a pin, and the buffer block is driven by the shifting driving device to move in the U-shaped groove of the shifting fork main body along the shifting shaft.
4. The shift actuator mechanism for an AMT transmission according to claim 3, wherein: the buffer block is fixedly connected with the gear shifting shaft through a pin hole and a pin, and the shifting fork main body moves along the gear shifting shaft and is limited by the buffer block.
5. The shift actuator mechanism for an AMT transmission according to claim 3, wherein: the gear shifting shaft is fixed to a box body of the AMT, and the shifting fork main body and the buffer block are displaced along the gear shifting shaft.
6. The shift actuator mechanism for an AMT transmission according to claim 4 or 5, characterized in that: the gear shifting driving device is a hydraulic driving unit, a pneumatic driving unit or a motor driving unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791567.9A CN109424742B (en) | 2017-09-05 | 2017-09-05 | Gear shifting actuating mechanism for AMT (automated mechanical Transmission) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791567.9A CN109424742B (en) | 2017-09-05 | 2017-09-05 | Gear shifting actuating mechanism for AMT (automated mechanical Transmission) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109424742A CN109424742A (en) | 2019-03-05 |
| CN109424742B true CN109424742B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791567.9A Active CN109424742B (en) | 2017-09-05 | 2017-09-05 | Gear shifting actuating mechanism for AMT (automated mechanical Transmission) |
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| CN (1) | CN109424742B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449416A (en) * | 1981-09-04 | 1984-05-22 | J. I. Case Company | Transmission control system |
| US5460060A (en) * | 1994-07-27 | 1995-10-24 | Eaton Corporation | Transmission shifting mechanism with spring loaded ball screw |
| US5517876A (en) * | 1994-08-04 | 1996-05-21 | Eaton Corporation | Transmission spring loaded shift device |
| JP4478534B2 (en) * | 2004-08-26 | 2010-06-09 | 富士重工業株式会社 | Shift device and manufacturing method thereof |
| FR2956178A3 (en) * | 2010-02-11 | 2011-08-12 | Renault Sas | Shift fork for changing speed ratio of automated gear box of motor vehicle, has shift fork axle coupled with shift fork body, and elastic coupling unit coupled between shift fork axle and shift fork body |
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN204921958U (en) * | 2015-09-07 | 2015-12-30 | 重庆隆旺机电有限责任公司 | Fork assembly that shifts that steps down is obstructed |
-
2017
- 2017-09-05 CN CN201710791567.9A patent/CN109424742B/en active Active
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| Publication number | Publication date |
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| CN109424742A (en) | 2019-03-05 |
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