CN108561551B - Gear selecting and shifting executing mechanism and method - Google Patents
Gear selecting and shifting executing mechanism and method Download PDFInfo
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- CN108561551B CN108561551B CN201810234304.2A CN201810234304A CN108561551B CN 108561551 B CN108561551 B CN 108561551B CN 201810234304 A CN201810234304 A CN 201810234304A CN 108561551 B CN108561551 B CN 108561551B
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- gear
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- screw
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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
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
Abstract
The invention discloses a gear selecting and shifting executing mechanism which comprises a gear shifting motor, a first transmission gear, a second transmission gear, a gear shifting lead screw, a push block, a shifting fork, a shifting block and a linear driving device, wherein the first transmission gear is arranged on an output shaft of the gear shifting motor, the first transmission gear is meshed with the second transmission gear, the second transmission gear is fixedly connected with the gear shifting lead screw, the gear shifting lead screw is in threaded connection with the push block, a through hole is formed in the push block, one end of the shifting block is connected with the linear driving device, and the other end of the shifting block is aligned with a groove on the shifting fork after being inserted into the through hole. The linear driving device corresponding to the required gear drives the shifting block to move and insert into the shifting fork to shift gears, then the shifting motor provides shifting power to drive the first transmission gear to rotate and further drive the second transmission gear to rotate, the second transmission gear drives the shifting screw to rotate, the shifting screw drives the pushing block to move through rotation of the second transmission gear, and the shifting block is used for shifting gears through the shifting block when the pushing block moves, so that the reliability is improved. The invention also discloses a gear selecting and shifting execution method.
Description
Technical Field
The invention relates to the technical field of gear selection and shifting of an AMT gearbox, in particular to a gear selection and shifting executing mechanism and a gear selection and shifting executing method.
Background
The development of the new energy power automobile is rapid, the development of automobile automatic control is accelerated by the convenient electric resource, automatic gear shifting becomes the main stream of the development of the new energy power automobile, and the AMT gearbox with faster development at present realizes the automatic gear shifting function by adding a gear selecting and shifting executing mechanism and a TCU controller on the traditional gearbox. However, the AMT gearbox is not ideal in gear shifting reliability, unsuccessful in gear shifting and incomplete in gear shifting, so that the driving safety is seriously affected.
The main stream gear selecting and shifting actuating mechanism in the current market works on the principle that a ball screw transmission system is utilized to realize a gear selecting function, and the ball screw transmission system is utilized to realize a gear shifting function, and as the gap of each shifting fork is only 1.8mm and the gap of each matching in the transmission system, the difficulty of controlling the position of the screw is increased, and the gear selecting and shifting actuating mechanism is also a cause of more gear selecting and failure in the running process of a vehicle. And moreover, gear selection displacement judgment is needed, the gear shifting stress is unbalanced, and the reliability is poor.
Therefore, how to provide a gear selecting and shifting actuating mechanism to improve the reliability is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention is directed to a gear selecting and shifting actuator for improving reliability. Another object of the present invention is to provide a gear selecting and shifting executing method based on the gear selecting and shifting executing mechanism.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a gear selecting and shifting actuating mechanism for an AMT gearbox comprises a gear shifting motor, a first transmission gear, a second transmission gear, a gear shifting screw rod, a push block, a shifting fork, a plurality of shifting blocks and a linear driving device, wherein the number of the shifting blocks is more than one, the number of the linear driving device is more than one, the number of the shifting forks is the same as the number of the linear driving device and the number of the shifting forks are correspondingly arranged,
the output shaft of the gear shifting motor is provided with the first transmission gear which is meshed with the second transmission gear, the second transmission gear is fixedly connected with the gear shifting screw rod which is in threaded connection with the push block,
the push block is provided with a through hole, one end of the shifting block is connected with the linear driving device, and the other end of the shifting block is inserted into the through hole and aligned with the groove on the shifting fork after penetrating out.
Preferably, the second transmission gear comprises a first sub gear and a second sub gear, wherein the first sub gear is positioned at one side of the first transmission gear and meshed with the first sub gear, the second sub gear is positioned at the other side of the first transmission gear and meshed with the first sub gear,
the gear shifting screw rod comprises a first sub screw rod and a second sub screw rod, the top end of the first sub screw rod is fixedly connected with the first sub gear in a coaxial mode, the top end of the second sub screw rod is fixedly connected with the second sub gear in a coaxial mode,
the pushing block is provided with a first threaded hole and a second threaded hole which are arranged at intervals, the first sub-lead screw is arranged in the first threaded hole, the second sub-lead screw is arranged in the second threaded hole,
the through hole is disposed between the first threaded hole and the second threaded hole.
Preferably, the axis of the through hole is perpendicular to the axes of the first screw hole and the second screw hole.
Preferably, the number of the shifting blocks is three, the number of the linear driving devices is three, and the number of the shifting forks is three.
Preferably, the linear driving device is a cylinder.
Preferably, the diameter of the second transmission gear is larger than that of the first transmission gear.
Preferably, the threaded connection between the gear shifting screw and the push block is specifically that a nut is arranged on the gear shifting screw, and the nut is fixedly connected with the push block.
Preferably, the gear selecting and shifting actuating mechanism further comprises a sensor for detecting whether the shifting block is inserted into the groove of the shifting fork.
The invention also provides a gear selecting and shifting executing method, based on the gear selecting and shifting executing mechanism,
when gear shifting is needed, the linear driving device corresponding to the needed gear drives the shifting block to move and insert into the shifting fork,
then select shelves, the motor of shifting provides the power drive of shifting first drive gear rotates, first drive gear drives the second drive gear rotates, the second drive gear drives the lead screw of shifting rotates, the lead screw of shifting passes through the rotation drive of self the ejector pad removes, the ejector pad is passed through during the ejector pad removes the shift fork is shifted.
Preferably, the second transmission gear comprises a first sub gear and a second sub gear, wherein the first sub gear is positioned at one side of the first transmission gear and meshed with the first sub gear, the second sub gear is positioned at the other side of the first transmission gear and meshed with the first sub gear,
the gear shifting screw rod comprises a first sub screw rod and a second sub screw rod, the top end of the first sub screw rod is fixedly connected with the first sub gear in a coaxial mode, the top end of the second sub screw rod is fixedly connected with the second sub gear in a coaxial mode,
the pushing block is provided with a first threaded hole and a second threaded hole which are arranged at intervals, the first sub-lead screw is arranged in the first threaded hole, the second sub-lead screw is arranged in the second threaded hole,
the through hole is arranged between the first threaded hole and the second threaded hole,
the number of the shifting blocks is more than one, the number of the linear driving devices is more than one, the number of the shifting forks is more than one, the number of the three is the same,
when gear shifting is needed, the linear driving device corresponding to the needed gear drives the shifting block to move and insert into the shifting fork,
then select shelves, shift motor provides the power drive that shifts first drive gear rotates, first drive gear with power symmetry transfer to first sub-gear with on the second sub-gear, first sub-gear with the second sub-gear respectively with power transfer to first sub-lead screw with on the second sub-lead screw, by first sub-lead screw with the second sub-lead screw is with the linear reciprocating motion of rotatory motion form conversion ejector pad, the ejector pad is moved through the ejector pad when shifting.
The invention provides a gear selecting and shifting actuating mechanism which is used for an AMT gearbox and comprises a gear shifting motor, a first transmission gear, a second transmission gear, a gear shifting screw, a push block, a shifting fork, a plurality of shifting blocks and a plurality of linear driving devices, wherein the number of the shifting forks is the same as that of the linear driving devices and the number of the shifting forks are correspondingly arranged, the first transmission gear is arranged on an output shaft of the gear shifting motor, the first transmission gear is meshed with the second transmission gear, the second transmission gear is fixedly connected with the gear shifting screw, the gear shifting screw is in threaded connection with the push block, a through hole is formed in the push block, one end of the shifting block is connected with the linear driving device, and the other end of the shifting block is inserted into the through hole and aligned with a groove on the shifting fork after penetrating out.
When the gear shifting device is used, when a gear is required to be shifted, the linear driving device corresponding to the required gear drives the shifting block to move and insert into the shifting fork, then gear selection is carried out, the gear shifting motor provides gear shifting power to drive the first transmission gear to rotate, the first transmission gear drives the second transmission gear to rotate, the second transmission gear drives the gear shifting screw to rotate, the gear shifting screw drives the pushing block to move through rotation of the gear shifting screw, and the shifting block shifts the shifting fork through the shifting block when the pushing block moves. Therefore, gear selection displacement judgment is omitted, and balanced and reliable gear shifting stress is ensured so as to improve reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a gear selecting and shifting executing mechanism according to an embodiment of the present invention.
In fig. 1 above:
the gear shifting device comprises a gear shifting motor 1, a first transmission gear 2, a first sub gear 3, a second sub gear 4, a first sub screw 5, a second sub screw 6, a push block 7, a first cylinder 8, a second cylinder 9, a third cylinder 10, a first shifting block 11, a second shifting block 12, a third shifting block 13, a first shifting fork 14, a second shifting fork 15, a third shifting fork 16 and a nut 17.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a gear selecting and shifting actuator according to an embodiment of the present invention.
The embodiment of the invention provides a gear selecting and shifting actuating mechanism which is used for an AMT gearbox and comprises a gear shifting motor 1, a first transmission gear 2, a second transmission gear 3, a gear shifting screw, a push block 7, a shifting fork, a shifting block and a linear driving device, wherein the number of the shifting blocks is multiple, the number of the linear driving device is multiple, the number of the shifting fork is the same as that of the number of the linear driving device and the number of the shifting fork, the number of the shifting blocks are correspondingly arranged, the first transmission gear 2 is arranged on an output shaft of the gear shifting motor 1, the first transmission gear 2 is meshed with the second transmission gear, the second transmission gear is fixedly connected with the gear shifting screw, the gear shifting screw is in threaded connection with the push block, a through hole is formed in the push block 7, one end of the shifting block is connected with the linear driving device, and the other end of the shifting block is inserted into the through hole and aligned with a groove on the shifting fork after penetrating out.
When the gear shifting device is used, when a gear shifting is needed, the linear driving device corresponding to the needed gear drives the shifting block to move and insert into the shifting fork, then gear selection is carried out, the gear shifting motor 1 provides gear shifting power to drive the first transmission gear 2 to rotate, the first transmission gear 2 drives the second transmission gear to rotate, the second transmission gear drives the gear shifting screw to rotate, the gear shifting screw drives the pushing block 7 to move through self rotation, and the shifting block 7 drives the shifting fork to shift gears through the shifting block when moving. Therefore, gear selection displacement judgment can be omitted, and balanced and reliable gear shifting stress is ensured so as to improve reliability.
The second transmission gear comprises a first sub gear 3 and a second sub gear 4, the first sub gear 3 is located on one side of the first transmission gear 2 and meshed with the first sub gear, the second sub gear 4 is located on the other side of the first transmission gear 2 and meshed with the first sub gear, the gear shifting screw comprises a first sub screw 5 and a second sub screw 6, the top end of the first sub screw 5 is fixedly connected with the coaxial center of the first sub gear 3, the top end of the second sub screw 6 is fixedly connected with the coaxial center of the second sub gear 4, a first threaded hole and a second threaded hole which are arranged at intervals are formed in a pushing block 7, the first sub screw 5 is arranged in the first threaded hole, the second sub screw 6 is arranged in the second threaded hole, and the through hole is formed between the first threaded hole and the second threaded hole.
When a gear is required to be shifted, the linear driving device corresponding to the required gear drives the shifting block to move and insert into the shifting fork, then gear selection is carried out, the gear shifting motor 1 provides gear shifting power to drive the first transmission gear 2 to rotate, the first transmission gear 2 symmetrically transmits power to the first sub gear 3 and the second sub gear 4, the first sub gear 3 and the second sub gear 4 respectively transmit power to the first sub screw 5 and the second sub screw 6, the first sub screw 5 and the second sub screw 6 convert the rotating motion form into linear reciprocating motion of the pushing block 7, and the shifting block 7 is shifted through the shifting block when moved.
Wherein the axis of the through hole is perpendicular to the axes of the first threaded hole and the second threaded hole. The linear driving device is a cylinder. The diameter of the second transmission gear is larger than the diameter of the first transmission gear 2. The gear-shifting screw is in threaded connection with the push block 7, and particularly a nut 17 is arranged on the gear-shifting screw, the nut 17 is fixedly connected with the push block 7, and a nut 17 is arranged on the first sub screw 5 and the second sub screw 6.
The gear selecting and shifting executing mechanism further comprises a sensor for detecting whether the shifting block is inserted into the groove of the shifting fork, and when the linear driving device is a cylinder, the sensor is a cylinder stroke sensor.
For convenience of understanding, a 5-gear gearbox is taken as an example for illustration, and of course, the number of gear selecting functional devices can be increased according to the increase or decrease of gears to realize a multi-gear selecting function:
at this time, the number of the shifting blocks is three, namely, the number of the first shifting block 11, the second shifting block 12 and the third shifting block 13 is three, namely, the number of the cylinders is three, namely, the number of the first cylinder 8, the second cylinder 9 and the third cylinder 10 is three, the number of the shifting forks is three, namely, the number of the first shifting fork 14, the number of the second shifting fork 15 and the number of the third shifting fork 16 is three, the number of the first cylinder 8, the number of the first shifting blocks 11 and the number of the first shifting fork 14 are matched, the number of the second cylinder 9, the number of the second shifting blocks 12 and the number of the second shifting fork 15 are matched, the number of the third cylinder 10, the number of the third shifting blocks 13 and the third shifting fork 16 are matched, wherein the number of the first shifting fork 14 corresponds to 1 gear and reverse gear, the number of the second shifting fork 15 corresponds to 2 gear and 3 gear, and the number of the third shifting fork 16 corresponds to 4 gear and 5 gear.
When the controller of the vehicle sends out a 4-gear shifting demand, then the third cylinder 10 corresponding to 4 and 5 gears executes action to press down the third shifting block 13, the third shifting block 13 moves along the through hole until being inserted into the third shifting fork 16 corresponding to 4 and 5 gears, the cylinder stroke sensor sends out a signal reaching a target position to the controller, the gear selecting action is finished until the signal reaches the target position, and then the shifting motor 1 drives the pushing block 7 to move, so that the shifting fork moves to finish the gear shifting. If the shifting fork moves forward to engage 4 gears, the shift motor 1 will drive the push block 7 to move forward, and if the shifting fork moves backward to engage 4 gears, the shift motor 1 will drive the push block 7 to move backward.
If the current gear is at 4 gears and the controller of the vehicle sends out a 5-gear demand, gear selection is not needed, and the shifting fork moves towards the opposite direction under the driving of the gear shifting motor 1, so that 4-gear 5-gear is directly completed. In the gear selection process, the third shifting block 13 can be moved downwards by 10mm under the action of the third air cylinder 10, and the time required for completing the gear selection is faster than that of adopting a ball screw gear selection system in the prior art.
If the current gear is in 4 th gear and the controller of the vehicle sends out a 1 st gear demand, the gear shifting motor 1 drives the push block to reset, then the third cylinder 10 drives the third shifting block 13 to withdraw from the third shifting fork 16, the first cylinder 8 corresponding to the 1 st gear and the reverse gear executes actions, the first shifting block 11 is pressed down, the two actions can be simultaneously carried out, and the later actions refer to the description above.
Reverse gear, 1 st gear, 2 nd gear and 3 rd gear are selected and shifted as above.
Compared with the prior art, the gear selecting and shifting executing mechanism does not adopt single gear shifting to select gear shifting, but uses three independent cylinders to independently control three shifting blocks to select gears, and then adopts symmetrical ball screw transmission to shift gears, so that gear selecting displacement judgment is omitted, and the balance and reliability of gear shifting stress are ensured. The three independent cylinders can realize continuous gear selection and jump gear selection, so that continuous gear shifting and gear shifting can be realized, and jump gear shifting and gear shifting can be realized. Meanwhile, the gear reduction mechanism is adopted, the two-stage reduction ratio of the first transmission gear 2 and the second transmission gear is increased before the one-stage reduction ratio of the ball screw, the effect of reducing speed and increasing torque is greatly achieved, namely, the gear shifting force is increased, the requirement on the power of a motor is reduced, and the reliability of the motor is improved.
When in actual work, the gear selecting cylinder row is provided with three independent identical cylinders; the gear shifting motor 1 provides gear shifting power, a pinion shaft is arranged on the gear shifting motor 1 and used for installing a first transmission gear 2, the pinion is used as a power input shaft and meshed with two large gears arranged on a screw rod, namely a first sub gear 3 and a second sub gear 4 of a second transmission gear, power is symmetrically transmitted to the two large gears, the large gears are connected with the screw rod through fixed key grooves, the two large gears respectively transmit power to the screw rod, a rotary motion form is converted into linear reciprocating motion of nuts through ball screw transmission pairs, the two symmetrical ball screw nuts are synchronous in motion, the nuts 17 on two sides are fixedly connected with bolts of a push block 7, thrust is synchronously transmitted to the push block 7, a shifting block up-down sliding groove, namely a through hole, is formed in the middle of the push block 7, a cylinder corresponding to a required gear pushes down the shifting block into a shifting fork, a cylinder stroke sensor sends a signal reaching a target position to a controller, a gear selecting action is completed in the mode, and the shifting block is pushed by the push block under the pushing of the push block.
The shifting block related in the gear selecting and shifting executing mechanism provided by the embodiment of the invention is in a flat pushing mode to realize gear shifting, and the gear shifting mode has simpler requirements on the structure of the shifting block head and is easier to process and heat treat.
The gear selecting and shifting executing mechanism provided by the embodiment of the invention adopts electric gear shifting and pneumatic gear selecting, each shifting fork is provided with an independent shifting block and an independent cylinder stroke sensor, and the gear selecting and shifting executing mechanism is different from a ball screw gear selecting mode in the prior art, the gear selecting and shifting executing mechanism provided by the embodiment of the invention can complete gear selecting only by the pulling and inserting actions of the shifting blocks, and under the control of a controller of a vehicle, the upward and downward actions of different shifting blocks can be simultaneously carried out, so that the gear selecting time is greatly shortened; different from a gear shifting finger sliding grinding gear shifting mode in the prior art, the gear shifting mode in the gear selecting and shifting executing mechanism provided by the embodiment of the invention is a flat push type, the direction of force is the same as the movement direction of a shifting fork shaft, and the transmission efficiency is improved; the ball screw pair is symmetrically arranged to balance the stress of the ball screw pair, so that the service life of the ball screw can be prolonged; through increasing the gear reduction combination, the speed reduction and torque increase effect is realized, the power requirement of a motor can be reduced, the gear shifting force of a shifting block is increased, and the gear shifting reliability is ensured. The gear selecting and shifting executing mechanism provided by the embodiment of the invention has the advantages of short gear shifting time, high gear selecting and shifting reliability and large gear shifting force, and further the vehicle runs more stably; the gear selecting and shifting actuating mechanism provided by the embodiment of the invention has a simple structure, can realize gear shifting only by one motor, and is easy to realize.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A gear selecting and shifting actuating mechanism is used for an AMT gearbox and is characterized by comprising a gear shifting motor, a first transmission gear, a second transmission gear, a gear shifting screw, a push block, a shifting fork, a plurality of shifting blocks and a linear driving device, wherein the number of the linear driving devices is multiple, the number of the shifting fork is multiple, the number of the shifting blocks, the number of the linear driving device and the number of the shifting fork are the same and are correspondingly arranged,
the output shaft of the gear shifting motor is provided with the first transmission gear which is meshed with the second transmission gear, the second transmission gear is fixedly connected with the gear shifting screw rod which is in threaded connection with the push block,
the push block is provided with a through hole, one end of the shifting block is connected with the linear driving device, and the other end of the shifting block is inserted into the through hole and aligned with the groove on the shifting fork after penetrating out.
2. The shift actuator of claim 1, wherein the second transfer gear comprises a first sub-gear and a second sub-gear, the first sub-gear being located on one side of the first transfer gear and engaged, the second sub-gear being located on the other side of the first transfer gear and engaged,
the gear shifting screw rod comprises a first sub screw rod and a second sub screw rod, the top end of the first sub screw rod is fixedly connected with the first sub gear in a coaxial mode, the top end of the second sub screw rod is fixedly connected with the second sub gear in a coaxial mode,
the pushing block is provided with a first threaded hole and a second threaded hole which are arranged at intervals, the first sub-lead screw is arranged in the first threaded hole, the second sub-lead screw is arranged in the second threaded hole,
the through hole is disposed between the first threaded hole and the second threaded hole.
3. The shift select actuator as set forth in claim 2 wherein an axis of said through bore is perpendicular to an axis of said first and second threaded bores.
4. The gear selection and shift actuator according to claim 2, wherein the number of the shift blocks is three, the number of the linear driving devices is three, and the number of the shift forks is three.
5. The shift select actuator as set forth in claim 1 wherein said linear drive is a cylinder.
6. The shift select actuator as set forth in claim 1 wherein a diameter of said second transfer gear is greater than a diameter of said first transfer gear.
7. The gear selecting and shifting executing mechanism according to claim 1, wherein the gear shifting screw is in threaded connection with the push block, specifically, a nut is arranged on the gear shifting screw, and the nut is fixedly connected with the push block.
8. The shift select actuator as set forth in claim 1 further comprising a sensor detecting whether said dial block is inserted into a recess of said fork.
9. A gear selecting and shifting executing method, characterized in that based on the gear selecting and shifting executing mechanism of claim 1,
when gear shifting is needed, the linear driving device corresponding to the needed gear drives the shifting block to move and insert into the shifting fork,
then select shelves, the motor of shifting provides the power drive of shifting first drive gear rotates, first drive gear drives the second drive gear rotates, the second drive gear drives the lead screw of shifting rotates, the lead screw of shifting passes through the rotation drive of self the ejector pad removes, the ejector pad is passed through during the ejector pad removes the shift fork is shifted.
10. The gear selection and shift execution method according to claim 9, wherein the second transmission gear includes a first sub-gear and a second sub-gear, the first sub-gear being located on one side of the first transmission gear and engaged, the second sub-gear being located on the other side of the first transmission gear and engaged,
the gear shifting screw rod comprises a first sub screw rod and a second sub screw rod, the top end of the first sub screw rod is fixedly connected with the first sub gear in a coaxial mode, the top end of the second sub screw rod is fixedly connected with the second sub gear in a coaxial mode,
the pushing block is provided with a first threaded hole and a second threaded hole which are arranged at intervals, the first sub-lead screw is arranged in the first threaded hole, the second sub-lead screw is arranged in the second threaded hole,
the through hole is arranged between the first threaded hole and the second threaded hole,
when gear shifting is needed, the linear driving device corresponding to the needed gear drives the shifting block to move and insert into the shifting fork,
then select shelves, shift motor provides the power drive that shifts first drive gear rotates, first drive gear with power symmetry transfer to first sub-gear with on the second sub-gear, first sub-gear with the second sub-gear respectively with power transfer to first sub-lead screw with on the second sub-lead screw, by first sub-lead screw with the second sub-lead screw is with the linear reciprocating motion of rotatory motion form conversion ejector pad, the ejector pad is moved through the ejector pad when shifting.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234304.2A CN108561551B (en) | 2018-03-21 | 2018-03-21 | Gear selecting and shifting executing mechanism and method |
| EP18910896.2A EP3770468B1 (en) | 2018-03-21 | 2018-06-20 | Gear selection and shifting actuating mechanism and method |
| PCT/CN2018/091970 WO2019178959A1 (en) | 2018-03-21 | 2018-06-20 | Gear selection and shifting actuating mechanism and method |
| US16/957,221 US11506283B2 (en) | 2018-03-21 | 2018-06-20 | Gear selection and shifting actuating mechanism and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234304.2A CN108561551B (en) | 2018-03-21 | 2018-03-21 | Gear selecting and shifting executing mechanism and method |
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| CN108561551A CN108561551A (en) | 2018-09-21 |
| CN108561551B true CN108561551B (en) | 2023-10-20 |
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| CN110081153A (en) * | 2019-06-10 | 2019-08-02 | 宁波市奉化强敏龙森电器有限公司 | A kind of electric pushrod structure |
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| CN206785990U (en) * | 2017-05-08 | 2017-12-22 | 吉林大学 | New-energy automobile electric-controlled mechanical linear shift automatic transmission |
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2018
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|---|---|---|---|---|
| US5507196A (en) * | 1991-11-12 | 1996-04-16 | Zf Friedrichshafen Ag | Gearshifting arrangement for actuating motor vehicle multi-speed gearboxes |
| WO2015154769A1 (en) * | 2014-04-11 | 2015-10-15 | Schaeffler Technologies AG & Co. KG | Transmission actuator for a motor vehicle transmission, and control means for controlling a transmission actuator |
| CN105909777A (en) * | 2016-06-23 | 2016-08-31 | 陕西法士特齿轮有限责任公司 | Automatic control device |
| CN206785990U (en) * | 2017-05-08 | 2017-12-22 | 吉林大学 | New-energy automobile electric-controlled mechanical linear shift automatic transmission |
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| Publication number | Publication date |
|---|---|
| CN108561551A (en) | 2018-09-21 |
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