CN111322387B - Automobile speed change system and speed change method - Google Patents

Automobile speed change system and speed change method Download PDF

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Publication number
CN111322387B
CN111322387B CN202010271923.6A CN202010271923A CN111322387B CN 111322387 B CN111322387 B CN 111322387B CN 202010271923 A CN202010271923 A CN 202010271923A CN 111322387 B CN111322387 B CN 111322387B
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China
Prior art keywords
clutch
gear
bracket
rocker arm
mounting hole
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CN202010271923.6A
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Chinese (zh)
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CN111322387A (en
Inventor
周斌
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Fujian Shenghai Intelligent Technology Co.,Ltd.
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Fujian Shenghai Intelligent Technology Co ltd
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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
    • F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • 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
    • 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
    • F16H61/36—Generation or transmission of movements for final actuating mechanisms with at least one movement being transmitted by a cable

Abstract

The invention discloses an automobile speed change system and a speed change method, comprising a bracket, a clutch assembly, a gear shift mechanism and a gear selection mechanism; the clutch assembly, the gear selecting mechanism and the gear shifting mechanism are sequentially arranged on the top of the bracket in parallel; the fixed end of the clutch assembly is arranged on one side of the bracket, and the movable end of the clutch assembly can be arranged on one end, far away from the fixed end of the clutch assembly, of the bracket in a transmission manner; a connecting frame is further arranged on one side, facing the fixed end of the clutch assembly, of the support; the fixed end of the gear shifting mechanism is arranged on the connecting frame, and the movable end of the gear shifting mechanism can be arranged on one end, far away from the fixed end of the gear shifting mechanism, of the bracket in a transmission manner; the fixed end of the gear selecting mechanism and the gear shifting mechanism are adjacently arranged on the connecting frame, and the movable end of the gear selecting mechanism can be arranged on one end of the bracket far away from the fixed end of the gear selecting mechanism in a transmission manner.

Description

Automobile speed change system and speed change method
Technical Field
The invention relates to the field of unmanned automobiles, in particular to an automobile speed change system and a speed change method.
Background
Now that unmanned technology is developing, the driving actions in conventional cars, which require manual operation, can now be replaced by machine intelligence, such as gear shifting of the gearbox. The conventional manual transmission is improved by adopting a simple sheet metal part, mounting a gear shifting motor, a gear selecting motor and the like on the transmission, and pushing a gear shifting rod of the transmission by a push rod to realize gear shifting and gear selecting actions of the transmission. The structure has higher requirements on the machining precision of parts, is relatively difficult to assemble and has more parts. Because the motor and the related connecting piece are fixedly connected with the gearbox, the vibration of the gearbox during working accelerates the damage of parts or the connection is not firm. Meanwhile, the gearbox needs to be correspondingly modified, and research, development and manufacturing costs are improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the automobile speed changing system and the speed changing method are provided, and the assembling difficulty of the gearbox is reduced.
In order to solve the technical problems, the invention adopts the technical scheme that:
an automobile speed change system comprises a bracket, a clutch assembly, a gear shift mechanism and a gear selection mechanism;
the clutch assembly, the gear selecting mechanism and the gear shifting mechanism are sequentially arranged on the top of the bracket in parallel;
the fixed end of the clutch assembly is arranged on one side of the bracket, and the movable end of the clutch assembly can be arranged on one end, far away from the fixed end of the clutch assembly, of the bracket in a transmission manner;
a connecting frame is further arranged on one side, facing the fixed end of the clutch assembly, of the support;
the fixed end of the gear shifting mechanism is arranged on the connecting frame, and the movable end of the gear shifting mechanism can be arranged on one end, far away from the fixed end of the gear shifting mechanism, of the bracket in a transmission manner;
the driving end of the gear shifting mechanism is arranged on the lower side of the top of the bracket and penetrates through the bracket to be in transmission connection with the movable end of the gear shifting mechanism;
the fixed end of the gear selecting mechanism and the gear shifting mechanism are adjacently arranged on the connecting frame, and the movable end of the gear selecting mechanism can be arranged on one end of the bracket far away from the fixed end of the gear selecting mechanism in a transmission manner;
the driving end of the gear selecting mechanism is arranged on the lower side of the top of the support and penetrates through the support to be in transmission connection with the movable end of the gear selecting mechanism.
A speed changing method applied to the automobile speed changing system comprises the following steps:
s1: after the clutch motor receives a gear shifting command, the clutch motor pushes the clutch spring to move towards one side of the clutch rocker arm;
s2: the second end of the clutch rocker arm is pushed, the first end of the clutch rocker arm pushes the clutch pump push rod to move towards the clutch pump, and the clutch pump drives a clutch of the automobile to be separated so as to cut off power transmission;
s3: after the execution of the step 2 is finished, according to a step instruction, the gear shifting motor performs a step withdrawing action, and at the moment, the gear shifting motor drives the movable end of the gear shifting rocker arm to rotate towards one side around the supporting end of the gear shifting rocker arm so as to drive the movable end of the gear shifting wire pulling part to perform the step withdrawing action;
s4: after the step S3 is finished, the gear selection motor executes a gear selection instruction to perform a gear selection operation, that is, the gear selection motor drives the movable end of the gear selection rocker arm to rotate so as to drive the movable end of the gear selection wire-pulling portion to operate;
s5: after the execution of the step S4 is finished, the shift motor performs a shift operation, and at this time, the shift motor drives the movable end of the shift rocker to rotate around the support end of the shift rocker toward the other side opposite to the rotation direction in the step S3, so as to drive the movable end of the shift wire pulling part to perform a shift operation;
s6: the movable end of the clutch motor resets to recover power transmission.
The invention has the beneficial effects that: the clutch assembly, the gear shifting mechanism and the gear selecting mechanism are integrated on the same support, the structure and the function of the automobile speed changing system are integrated, the whole automobile speed changing process is executed by the motor, manual operation is replaced, unmanned gear shifting operation is realized, the automobile speed changing system is separated from the gearbox, the structure of the automobile speed changing system is simplified, the influence of vibration generated when the gearbox works on the speed changing system is avoided, the stability of the speed changing system is improved, the gearbox does not need to be transformed, the research and development cost is saved, and the development of unmanned driving technology is promoted.
Drawings
FIG. 1 is a first schematic structural diagram of a vehicle transmission system according to an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of a vehicle transmission system according to an embodiment of the present invention;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a right side view of FIG. 2;
fig. 6 is a schematic structural diagram of a clutch assembly according to an embodiment of the present invention.
Description of reference numerals:
1. a support; 11. a side plate; 12. a through hole;
2. a clutch assembly; 21. a fixed end of the clutch assembly; 22. a movable end of the clutch assembly; 23. a clutch pump; 24. a clutch pump push rod; 25. a clutch spring; 26. a clutch rocker arm; 27. a clutch motor; 231. the movable end of the clutch pump; 232. the fixed end of the clutch pump; 251. a ball head; 252. a ball cup seat; 261. a first end; 262. a second end; 263. a center of rotation; 271. the fixed end of the clutch motor; 272. a movable end of the clutch motor;
3. a gear shift mechanism; 31. the fixed end of the gear shifting mechanism; 32. a movable end of the shift mechanism; 33. a drive end of a shift mechanism; 34. a shift motor; 35. a shift wire portion; 36. a shift rocker arm; 311. a fixed end of the shift motor; 312. a movable end of the shift motor; 321. a fixed end of the shift wire portion; 322. a movable end of the shift wire portion; 331. a support end of the shift rocker arm; 332. a transmission end of the shift rocker arm; 333. a fourth mounting hole; 334. a fifth mounting hole; 335. a sixth mounting hole;
4. a gear selecting mechanism; 41. the fixed end of the gear selecting mechanism; 42. the movable end of the gear selecting mechanism; 43. a drive end of the gear selection mechanism; 44. a gear selecting motor; 45. a gear selecting pull wire part; 46. a gear selecting rocker arm; 441. the fixed end of the gear selecting motor; 442. the movable end of the gear selecting motor; 451. a fixed end of the gear selecting bracing wire part; 452. the movable end of the gear selecting pull wire part; 461. a support end of the gear selecting rocker arm; 462. a transmission end of the gear selecting rocker arm; 463. a first mounting hole; 464. a second mounting hole; 465. a third mounting hole;
5. a connecting frame;
6. a first limit screw; 7. a second limit screw; 8. and a third limit screw.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1-6, an automotive transmission system includes a bracket, a clutch assembly, a shift mechanism and a gear selecting mechanism;
the clutch assembly, the gear selecting mechanism and the gear shifting mechanism are sequentially arranged on the top of the bracket in parallel;
the fixed end of the clutch assembly is arranged on one side of the bracket, and the movable end of the clutch assembly can be arranged on one end, far away from the fixed end of the clutch assembly, of the bracket in a transmission manner;
a connecting frame is further arranged on one side, facing the fixed end of the clutch assembly, of the support;
the fixed end of the gear shifting mechanism is arranged on the connecting frame, and the movable end of the gear shifting mechanism can be arranged on one end, far away from the fixed end of the gear shifting mechanism, of the bracket in a transmission manner;
the driving end of the gear shifting mechanism is arranged on the lower side of the top of the bracket and penetrates through the bracket to be in transmission connection with the movable end of the gear shifting mechanism;
the fixed end of the gear selecting mechanism and the gear shifting mechanism are adjacently arranged on the connecting frame, and the movable end of the gear selecting mechanism can be arranged on one end of the bracket far away from the fixed end of the gear selecting mechanism in a transmission manner;
the driving end of the gear selecting mechanism is arranged on the lower side of the top of the support and penetrates through the support to be in transmission connection with the movable end of the gear selecting mechanism.
The working principle of the invention is as follows: the clutch assembly, the gear selecting mechanism and the gear shifting mechanism are integrated to the top of the same support, the speed changing system is separated from the clutch, the influence of vibration of the clutch during working on the speed changing system is avoided, and unmanned gear shifting can be realized through automatic operation of the clutch assembly, the gear selecting mechanism and the gear shifting mechanism.
From the above description, the beneficial effects of the present invention are: the clutch assembly, the gear shifting mechanism and the gear selecting mechanism are integrated on the same support, the structure and the function of the automobile speed changing system are integrated, the whole automobile speed changing process is executed by the motor, manual operation is replaced, unmanned gear shifting operation is realized, the automobile speed changing system is separated from the gearbox, the structure of the automobile speed changing system is simplified, the influence of vibration generated when the gearbox works on the speed changing system is avoided, the stability of the speed changing system is improved, the gearbox does not need to be transformed, the research and development cost is saved, and the development of unmanned driving technology is promoted.
Furthermore, the clutch assembly comprises a clutch pump, a clutch pump push rod, a clutch spring, a clutch rocker arm and a clutch motor;
the clutch rocker arm can be arranged at the top of the bracket in a swinging manner;
the fixed end of the clutch pump penetrates through the side plate of the bracket and is arranged on the side plate of the bracket;
one end of the clutch pump push rod is connected with the movable end of the clutch pump, and the other end of the clutch pump push rod is in transmission connection with the first end of the clutch rocker arm;
one end of the clutch spring is arranged on one side, facing the clutch rocker arm, of the side plate of the bracket adjacent to the fixed end of the clutch pump, and the other end of the clutch spring is in transmission connection with the second end of the clutch rocker arm;
the fixed end of the clutch motor is arranged on the lower side of the top of the bracket;
the movable end of the clutch motor is in transmission connection with the clutch spring so as to push the clutch spring to move towards one side where the clutch rocker is located.
According to the description, the clutch motor is adopted to drive the clutch spring, so that the separation and closing operation of the automobile clutch is realized, the time of the travel and return stroke of the push rod of the clutch pump can be shortened through the clutch spring, and the power cut-off and recovery efficiency of the clutch is greatly improved.
Furthermore, two first limit screws are further installed at the top of the support and are respectively located on two sides of the first end, so that the first end always moves between the two first limit screws.
According to the above description, the first limit screw is arranged to limit the swing range of the clutch rocker, so that the rotation range of the clutch motor is limited, and the overall function stability of the clutch assembly is ensured.
Furthermore, the gear selecting mechanism comprises a gear selecting motor, a gear selecting wire drawing part and a gear selecting rocker arm;
the supporting end of the gear selecting rocker arm can be arranged at the top of the bracket in a transmission manner;
the fixed end of the gear selecting wire drawing part is arranged on the connecting frame, and the movable end of the gear selecting wire drawing part is in transmission connection with the transmission end of the gear selecting rocker arm;
the fixed end of the gear selecting motor is arranged on the lower side of the top of the bracket, and the movable end of the gear selecting motor penetrates through the top of the bracket and is in transmission connection with the supporting end of the gear selecting rocker arm.
According to the above description, the gear selecting motor is arranged to drive the gear selecting rocker arm, so that the gear selecting command is executed, manual operation is replaced, unmanned operation can be realized on the premise of not improving the gearbox, and the research and development cost and the automobile manufacturing cost are saved.
Furthermore, two second limit screws are further installed at the top of the support and are respectively located on two sides of the movable end of the gear selecting rocker arm, so that the movable end of the gear selecting rocker arm always moves between the two second limit screws.
As can be seen from the above description, the second limit screw is provided to limit the rotation range of the gear selection rocker arm, so as to limit the rotation range of the gear selection motor, ensure the stability of the gear selection motor and the gear selection wire portion, and simultaneously realize efficient gear selection.
Furthermore, a first mounting hole, a second mounting hole and a third mounting hole which are linearly arranged are sequentially formed in the gear selecting rocker arm;
the distance between the first mounting hole and the third mounting hole is larger than the distance between the first mounting hole and the second mounting hole;
the first mounting hole is in transmission connection with the top of the support;
and the gear selecting pull wire part is in transmission connection with the second mounting hole.
As can be seen from the above description, the gear selecting wire drawing part is in transmission connection with the second mounting hole, so that the gear selecting rocker arm rotates with a smaller radius, and the running speed and the stability of the gear selecting rocker arm are improved.
Further, the gear shifting mechanism comprises a gear shifting motor, a gear shifting wire drawing part and a gear shifting rocker arm;
the supporting end of the gear shifting rocker arm can be arranged at the top of the bracket in a transmission manner;
the fixed end of the gear shifting wire drawing part is arranged on the connecting frame, and the movable end of the gear shifting wire drawing part is in transmission connection with the transmission end of the gear shifting rocker arm;
the transmission end of the gear shifting rocker arm is arranged towards the gear selecting mechanism;
the fixed end of the gear shifting motor is arranged on the lower side of the top of the bracket, and the movable end of the gear shifting motor penetrates through the top of the bracket to be in transmission connection with the supporting end of the gear shifting rocker arm.
As can be seen from the above description, the gear shifting motor and the gear shifting rocker arm are arranged, and the gear shifting motor drives the gear shifting rocker arm to rotate, so that automatic gear shifting is realized.
Furthermore, two third limit screws are further installed at the top of the bracket and are respectively located on two sides of the movable end of the gear shifting rocker arm, so that the movable end of the gear shifting rocker arm always moves between the two third limit screws.
Furthermore, a fourth mounting hole, a fifth mounting hole and a sixth mounting hole which are linearly arranged are sequentially formed in the gear shifting rocker arm;
the distance between the sixth mounting hole and the fourth mounting hole is larger than the distance between the sixth mounting hole and the fifth mounting hole;
the sixth mounting hole is in transmission connection with the top of the support;
the gear shifting wire drawing part is in transmission connection with the fourth mounting hole.
As can be seen from the above description, the shift wire portion is drivingly connected to the fourth mounting hole, and the maximum radius of rotation is selected to maximize the stroke of the shift wire portion, so as to ensure that the shifting operation can be performed stably at all times.
A speed changing method applied to the automobile speed changing system comprises the following steps:
s1: after the clutch motor receives a gear shifting command, the clutch motor pushes the clutch spring to move towards one side of the clutch rocker arm;
s2: the second end of the clutch rocker arm is pushed, the first end of the clutch rocker arm pushes the clutch pump push rod to move towards the clutch pump, and the clutch pump drives a clutch of the automobile to be separated so as to cut off power transmission;
s3: after the execution of the step 2 is finished, according to a step instruction, the gear shifting motor performs a step withdrawing action, and at the moment, the gear shifting motor drives the movable end of the gear shifting rocker arm to rotate towards one side around the supporting end of the gear shifting rocker arm so as to drive the movable end of the gear shifting wire pulling part to perform the step withdrawing action;
s4: after the step S3 is finished, the gear selection motor executes a gear selection instruction to perform a gear selection operation, that is, the gear selection motor drives the movable end of the gear selection rocker arm to rotate so as to drive the movable end of the gear selection wire-pulling portion to operate;
s5: after the execution of the step S4 is finished, the shift motor performs a shift operation, and at this time, the shift motor drives the movable end of the shift rocker to rotate around the support end of the shift rocker toward the other side opposite to the rotation direction in the step S3, so as to drive the movable end of the shift wire pulling part to perform a shift operation;
s6: the movable end of the clutch motor resets to recover power transmission.
According to the description, the process of gear shifting is executed through the clutch motor, the gear shifting motor and the gear selecting motor, manual operation is replaced, unmanned operation of the gearbox is achieved, and efficiency is higher.
Example one
Referring to fig. 1-6, an automotive transmission system includes a bracket 1, a clutch assembly 2, a gear shifting mechanism 3 and a gear selecting mechanism 4;
the clutch assembly 2, the gear selecting mechanism 4 and the gear shifting mechanism 3 are sequentially arranged on the top of the bracket 1 in parallel;
the fixed end 21 of the clutch assembly is arranged at one side of the bracket 1, and the movable end 22 of the clutch assembly can be arranged at one end of the bracket 1 far away from the fixed end 21 of the clutch assembly in a transmission way;
the side of the bracket 1 facing the fixed end 21 of the clutch assembly is also provided with a connecting frame 5;
the fixed end 31 of the gear shifting mechanism is arranged on the connecting frame 5, and the movable end 32 of the gear shifting mechanism is arranged on one end of the bracket 1 far away from the fixed end 31 of the gear shifting mechanism in a transmission way;
the driving end 33 of the gear shifting mechanism is arranged at the lower side of the top of the bracket 1 and is in transmission connection with the movable end 32 of the gear shifting mechanism through the bracket 1;
the fixed end 41 of the gear selecting mechanism is arranged on the connecting frame 5 adjacent to the gear shifting mechanism 3, and the movable end 42 of the gear selecting mechanism can be arranged on one end of the bracket 1 far away from the fixed end 41 of the gear selecting mechanism in a transmission way;
the driving end 43 of the gear selecting mechanism is arranged at the lower side of the top of the bracket 1 and is in transmission connection with the movable end 42 of the gear selecting mechanism through the bracket 1.
Preferably, the connecting frame 5 is welded with the top of the bracket 1;
referring to fig. 1, the clutch assembly 2 includes a clutch pump 23, a clutch pump push rod 24, a clutch spring 25, a clutch rocker 26, and a clutch motor 27;
the clutch rocker 26 is arranged on the top of the bracket 1 in a swinging way;
the fixed end 232 of the clutch pump passes through the side plate 11 of the bracket 1 and is arranged on the side plate 11 of the bracket 1;
one end of the clutch pump push rod 24 is connected with the movable end 231 of the clutch pump, and the other end is in transmission connection with the first end 261 of the clutch rocker 26;
one end of the clutch spring 25 is arranged on one side of the side plate 11 of the bracket 1 facing the rocker arm and is adjacent to the fixed end 232 of the clutch pump, and the other end is in transmission connection with the second end 262 of the clutch rocker arm 26;
the fixed end 271 of the clutch motor is arranged at the lower side of the top of the bracket 1;
the movable end 272 of the clutch motor is in driving connection with the clutch spring 25 to push the clutch spring 25 to move towards the side of the clutch rocker 26.
Specifically, referring to fig. 6, the movable end 272 of the clutch motor is in transmission connection with the rotation center 263 of the clutch rocker 26;
the clutch spring 25 is hinged to the side plate 11 of the bracket in a ball joint manner, the ball head 251 is arranged at one end of the clutch spring 25 facing the side plate 11, the ball head seat 252 is mounted on the side plate 11, when the clutch motor 27 works and the clutch spring 25 rotates, the ball head 251 is ensured not to fall off from the ball head seat 252, and in order to ensure the lubricating performance of the rotation of the ball head 251, the ball head seat 252 usually adopts copper as a material.
Specifically, the action of a clutch to be separated is required to be fast, the action of a clutch to be engaged is required to be slow, and the engine is prevented from being flameout due to large power impact. Therefore, when the action of separating the clutch is executed, the speed is reduced firstly and then the speed is increased, namely, the redundant pretightening force of the clutch is counteracted firstly, then the clutch is separated quickly, and the power transmission is cut off; when the clutch is engaged, the speed is reduced firstly and then the speed is increased, the clutch is engaged slowly firstly, and when the clutch is close to complete engagement, the pressure is released quickly, so that the clutch is engaged completely.
One end of the clutch pump 23, which is far away from the clutch pump push rod 24, is communicated with a clutch of the automobile so as to push high-pressure oil into the clutch oil cylinder;
specifically, the clutch pump push rod 24 and the clutch spring 25 are both rotatably connected with the clutch rocker 26 through an inner hexagon screw;
specifically, four through holes 12 are formed in two sides of the bottom of the support 1 and are used for being connected with a frame;
referring to fig. 2, two first limit screws 6 are further installed at the top of the bracket 1, and the first limit screws 6 are respectively located at two sides of the first end 261, so that the first end 261 always moves between the two first limit screws 6.
Referring to fig. 1, the gear selection mechanism 4 includes a gear selection motor 44, a gear selection wire portion 45, and a gear selection rocker arm 46;
the supporting end 461 of the gear selecting rocker arm can be arranged at the top of the bracket 1 in a transmission way;
the fixed end 451 of the gear selecting wire part is arranged on the connecting frame 5, and the movable end 452 of the gear selecting wire part is in transmission connection with the transmission end 462 of the gear selecting rocker arm;
the fixed end 441 of the gear selecting motor is installed at the lower side of the top of the bracket 1, and the movable end 442 of the gear selecting motor penetrates through the top of the bracket 1 to be in transmission connection with the support end 461 of the gear selecting rocker arm.
Specifically, the gear selecting rocker arm 46 is rotatably connected with the gear selecting wire drawing part 45 through a socket head cap screw;
referring to fig. 2, the top of the bracket 1 is further provided with two second limit screws 7, and the second limit screws 7 are respectively located at two sides of the transmission end 462 of the gear selection rocker arm, so that the transmission end 462 of the gear selection rocker arm always moves between the two second limit screws 7.
Referring to fig. 4, a first mounting hole 463, a second mounting hole 464 and a third mounting hole 465 which are linearly arranged are sequentially formed in the gear selecting rocker arm 46;
the spacing between the first and third mounting apertures 463 and 465 is greater than the spacing between the first and second mounting apertures 463 and 464;
the first mounting hole 463 is in transmission connection with the top of the bracket 1;
the gear selecting pull wire part 45 is in transmission connection with the second mounting hole 464.
Referring to fig. 1, the shift mechanism 3 includes a shift motor 34, a shift wire portion 35, and a shift rocker arm 36;
the support end 331 of the shift rocker arm is drivingly mounted on the top of the bracket 1;
the fixed end 321 of the gear shifting wire part is arranged on the connecting frame 5, and the movable end 322 of the gear shifting wire part is in transmission connection with the transmission end 332 of the gear shifting rocker arm;
the transmission end 332 of the gearshift rocker arm is arranged towards the gear selection mechanism 4;
the fixed end 311 of the shift motor is installed at the lower side of the top of the bracket 1, and the movable end 312 of the shift motor passes through the top of the bracket 1 and is in transmission connection with the support end 331 of the shift rocker arm.
Referring to fig. 2, the top of the bracket 1 is further provided with two third limit screws 8, and the third limit screws 8 are respectively located at two sides of the driving end 332 of the shifting rocker arm, so that the driving end 332 of the shifting rocker arm always moves between the two third limit screws 8.
Preferably, the first limiting screw 6, the second limiting screw 7 and the third limiting screw 8 are all socket head cap screws;
referring to fig. 4, the shift rocker arm 36 is sequentially provided with a fourth mounting hole 333, a fifth mounting hole 334 and a sixth mounting hole 335 which are linearly arranged;
the distance between the sixth mounting hole 335 and the fourth mounting hole 333 is greater than the distance between the sixth mounting hole 335 and the fifth mounting hole 334;
the sixth mounting hole 335 is in transmission connection with the top of the bracket 1;
the shift wire portion 35 is drivingly connected to the fourth mounting hole 333.
Example two
A shifting method applied to the automotive shifting system according to the first embodiment, comprising the steps of:
s1: when the clutch motor 27 receives a gear shifting command, the clutch motor 27 pushes the clutch spring 25 to move towards one side of the clutch rocker 26;
s2: the second end 262 of the clutch rocker 26 is pushed, the first end 261 of the clutch rocker 26 pushes the clutch pump push rod 24 to move towards the clutch pump 23, and the clutch pump 23 drives the clutch of the automobile to be separated so as to cut off power transmission;
s3: after the execution of S2 is completed, according to the gear instruction, the gear shifting motor 34 performs a gear shifting operation, and at this time, the gear shifting motor 34 drives the transmission end 332 of the gear shifting rocker arm to rotate around the support end 331 of the gear shifting rocker arm towards one side to drive the movable end 322 of the gear shifting wire-pulling portion to perform a gear shifting operation;
s4: after the step S3 is completed, the gear selecting motor 44 executes a gear selecting command to perform a gear selecting operation, that is, the gear selecting motor 44 drives the transmission end 462 of the gear selecting rocker arm to rotate so as to drive the movable end 452 of the gear selecting wire portion to operate;
s5: after S4 is finished, the shift motor 34 performs a shift operation, and at this time, the shift motor 34 drives the transmission end 332 of the shift rocker arm to rotate around the support end 331 of the shift rocker arm toward the other side opposite to the rotation direction in S3, so as to drive the movable end 322 of the shift wire-pulling portion to perform a shift operation;
s6: the free end 272 of the clutch motor is reset to resume power transmission.
In summary, the automobile speed change system and the speed change method provided by the invention integrate the clutch assembly, the gear shift mechanism and the gear selection mechanism with the bracket, so as to realize the separation of the speed change system and the clutch, and avoid the influence of the vibration of the clutch on the speed change system, which causes the influence on the service life of the speed change system; by adopting the clutch motor, the gear selecting motor and the gear shifting motor, unmanned operation can be realized, and the development of unmanned driving technology is promoted.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (9)

1. An automobile speed change system is characterized by comprising a bracket, a clutch assembly, a gear shift mechanism and a gear selection mechanism;
the clutch assembly, the gear selecting mechanism and the gear shifting mechanism are sequentially arranged on the top of the bracket in parallel;
the fixed end of the clutch assembly is arranged on one side of the bracket, and the movable end of the clutch assembly can be arranged on one end, far away from the fixed end of the clutch assembly, of the bracket in a transmission manner;
a connecting frame is further arranged on one side, facing the fixed end of the clutch assembly, of the support;
the fixed end of the gear shifting mechanism is arranged on the connecting frame, and the movable end of the gear shifting mechanism can be arranged on one end, far away from the fixed end of the gear shifting mechanism, of the bracket in a transmission manner;
the driving end of the gear shifting mechanism is arranged on the lower side of the top of the bracket and penetrates through the bracket to be in transmission connection with the movable end of the gear shifting mechanism;
the fixed end of the gear selecting mechanism and the gear shifting mechanism are adjacently arranged on the connecting frame, and the movable end of the gear selecting mechanism can be arranged on one end of the bracket far away from the fixed end of the gear selecting mechanism in a transmission manner;
the driving end of the gear selecting mechanism is arranged on the lower side of the top of the support and penetrates through the support to be in transmission connection with the movable end of the gear selecting mechanism.
2. The automotive transmission system of claim 1, wherein the clutch assembly comprises a clutch pump, a clutch pump push rod, a clutch spring, a clutch rocker arm and a clutch motor;
the clutch rocker arm can be arranged at the top of the bracket in a swinging manner;
the fixed end of the clutch pump penetrates through the side plate of the bracket and is arranged on the side plate of the bracket;
one end of the clutch pump push rod is connected with the movable end of the clutch pump, and the other end of the clutch pump push rod is in transmission connection with the first end of the clutch rocker arm;
one end of the clutch spring is arranged on one side, facing the clutch rocker arm, of the side plate of the bracket adjacent to the fixed end of the clutch pump, and the other end of the clutch spring is in transmission connection with the second end of the clutch rocker arm;
the fixed end of the clutch motor is arranged on the lower side of the top of the bracket;
the movable end of the clutch motor is in transmission connection with the clutch spring so as to push the clutch spring to move towards one side where the clutch rocker is located.
3. The vehicle transmission system of claim 2, wherein the top of the bracket further comprises two first limit screws, the first limit screws are respectively located at two sides of the first end, so that the first end always moves between the two first limit screws.
4. The automotive transmission system of claim 1, wherein the gear selection mechanism comprises a gear selection motor, a gear selection wire portion and a gear selection rocker arm;
the supporting end of the gear selecting rocker arm can be arranged at the top of the bracket in a transmission manner;
the fixed end of the gear selecting wire drawing part is arranged on the connecting frame, and the movable end of the gear selecting wire drawing part is in transmission connection with the transmission end of the gear selecting rocker arm;
the fixed end of the gear selecting motor is arranged on the lower side of the top of the bracket, and the movable end of the gear selecting motor penetrates through the top of the bracket and is in transmission connection with the supporting end of the gear selecting rocker arm.
5. The automotive transmission system according to claim 4, wherein the top of the bracket is further provided with two second limit screws, and the second limit screws are respectively located on two sides of the transmission end of the gear selection rocker arm, so that the transmission end of the gear selection rocker arm always moves between the two second limit screws.
6. The automobile speed changing system according to claim 4, wherein the gear selecting rocker arm is sequentially provided with a first mounting hole, a second mounting hole and a third mounting hole which are linearly arranged;
the distance between the first mounting hole and the third mounting hole is larger than the distance between the first mounting hole and the second mounting hole;
the first mounting hole is in transmission connection with the top of the support;
and the gear selecting pull wire part is in transmission connection with the second mounting hole.
7. The automotive transmission system of claim 1, wherein the shift mechanism includes a shift motor, a shift wire portion, and a shift rocker arm;
the supporting end of the gear shifting rocker arm can be arranged at the top of the bracket in a transmission manner;
the fixed end of the gear shifting wire drawing part is arranged on the connecting frame, and the movable end of the gear shifting wire drawing part is in transmission connection with the transmission end of the gear shifting rocker arm;
the transmission end of the gear shifting rocker arm is arranged towards the gear selecting mechanism;
the fixed end of the gear shifting motor is arranged on the lower side of the top of the bracket, and the movable end of the gear shifting motor penetrates through the top of the bracket to be in transmission connection with the supporting end of the gear shifting rocker arm.
8. The vehicle transmission system of claim 7, wherein two third limiting screws are further mounted on the top of the bracket, and the third limiting screws are respectively located on two sides of the transmission end of the shifting rocker arm, so that the transmission end of the shifting rocker arm always moves between the two third limiting screws.
9. The automobile transmission system according to claim 7, wherein the shift rocker arm is provided with a fourth mounting hole, a fifth mounting hole and a sixth mounting hole which are arranged in a straight line in sequence;
the distance between the sixth mounting hole and the fourth mounting hole is larger than the distance between the sixth mounting hole and the fifth mounting hole;
the sixth mounting hole is in transmission connection with the top of the support;
the gear shifting wire drawing part is in transmission connection with the fourth mounting hole.
CN202010271923.6A 2020-04-09 2020-04-09 Automobile speed change system and speed change method Active CN111322387B (en)

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CN114321350B (en) * 2022-01-06 2023-05-23 福建盛海智能科技有限公司 Unmanned automatic gear shifting device and method for crawler traveling equipment
CN114962619B (en) * 2022-06-28 2024-03-29 江苏盛海智能科技有限公司 Automatic gearbox based on manual gearbox repacking

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CN107269732A (en) * 2017-08-08 2017-10-20 浙江万里扬股份有限公司 Bi-motor automatic clutch actuator

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CN202144861U (en) * 2011-07-26 2012-02-15 重庆大学 General actuating mechanism of mechanical automatic speed changer
DE102015107699A1 (en) * 2014-05-30 2015-12-03 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Power transmission unit
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