CN113833840A - Gear shifting device of AMT (automated mechanical transmission) and control method - Google Patents

Gear shifting device of AMT (automated mechanical transmission) and control method Download PDF

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Publication number
CN113833840A
CN113833840A CN202111205583.8A CN202111205583A CN113833840A CN 113833840 A CN113833840 A CN 113833840A CN 202111205583 A CN202111205583 A CN 202111205583A CN 113833840 A CN113833840 A CN 113833840A
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China
Prior art keywords
gear
driven
shaft
driving
driven gear
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CN202111205583.8A
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Chinese (zh)
Inventor
郭应清
王铜奎
裴迪
祁稳
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Application filed by Anhui Jianghuai Automobile Group Corp filed Critical Anhui Jianghuai Automobile Group Corp
Priority to CN202111205583.8A priority Critical patent/CN113833840A/en
Publication of CN113833840A publication Critical patent/CN113833840A/en
Pending legal-status Critical Current

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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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0202—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 characterised by the signals used the signals being electric
    • F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • 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
    • F16H61/28—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
    • F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention discloses a gear shifting device of an AMT (automated mechanical transmission) and a control method. A flywheel cavity is formed between the engine and the speed change mechanism, the dual-mass flywheel is arranged in the flywheel cavity, and the dual-mass flywheel is fixedly connected with the driving end of the single clutch. The speed change mechanism comprises an input shaft, an output shaft, a reverse gear shaft, a middle shaft, a driving motor and a gear selecting and shifting execution mechanism, wherein a driven end of the single clutch is connected with the input shaft, and the input shaft is provided with a normally meshed driving gear; the end part of the input shaft is coaxially connected with the output shaft through a bearing, the input shaft is arranged on one side of the intermediate shaft in parallel, and the intermediate shaft is driven to rotate through a driving motor; the reverse gear shaft is arranged on the other side of the intermediate shaft in parallel, a reverse gear idle wheel is arranged on the reverse gear shaft, and the reverse gear idle wheel is sleeved on the reverse gear shaft in an empty mode. The invention can effectively improve the synchronous speed, reduce the control difficulty and prolong the service life of the AMT transmission.

Description

Gear shifting device of AMT (automated mechanical transmission) and control method
Technical Field
The invention relates to the field of AMT (automated mechanical transmission) devices, in particular to a gear shifting device of an AMT and a control method.
Background
An existing AMT is generally developed based on MT manual transmission product expansion and automatic gear shifting functions, namely a clutch control executing mechanism and a gear selecting and shifting control executing mechanism are additionally arranged on the basis of the MT manual transmission, a clutch actuator and a gear selecting and shifting actuator are controlled and driven through a TCU (transmission control unit), a manual gear shifting process is simulated, and an automatic gear shifting function is achieved. The clutch control executing mechanism and the gear selecting and shifting control executing mechanism are independent and are arranged outside the transmission shell. Such an AMT transmission developed on the basis of the conventional MT has the following problems:
1. the synchronizer has complex gear shifting process, great gear shifting control difficulty and complex control program. High and low temperature sensitivity, especially long shift time at low temperature;
2. the service life of a synchronizer ring is limited, the synchronizer ring is frequently shifted under the working condition of urban roads and is intensively used at a certain gear, so that the service life of the synchronizer ring cannot meet the service life requirement of the whole vehicle;
3. the friction system is costly;
therefore, how to provide a gear shifting device and a control method that can effectively increase the synchronous speed, reduce the control difficulty and prolong the service life of the AMT transmission becomes a technical problem to be solved in the field.
Disclosure of Invention
The invention aims to provide a gear shifting device and a control method of an AMT (automated mechanical transmission), which can effectively improve the synchronous speed, reduce the control difficulty and prolong the service life of the AMT.
According to an aspect of the present invention, there is provided an AMT transmission shifting apparatus including an engine, a dual mass flywheel, a single clutch, and a speed change mechanism;
a flywheel cavity is formed between the engine and the speed change mechanism, the dual-mass flywheel is arranged in the flywheel cavity, and the dual-mass flywheel is fixedly connected with the driving end of the single clutch;
the speed change mechanism comprises an input shaft, an output shaft, a reverse gear shaft, an intermediate shaft, a driving motor and a gear selecting and shifting executing mechanism, wherein a driven end of the single clutch is connected with the input shaft, and a normally meshed driving gear is arranged on the input shaft; the end part of the input shaft is coaxially connected with the output shaft through a bearing, the input shaft is arranged on one side of the intermediate shaft in parallel, and the intermediate shaft is driven to rotate by the driving motor; the reverse gear shaft is arranged on the other side of the intermediate shaft in parallel, a reverse gear idler wheel is arranged on the reverse gear shaft, and the reverse gear idler wheel is sleeved on the reverse gear shaft in an empty mode;
the intermediate shaft is sequentially provided with a first-gear driving gear, a second-gear driving gear, a third-gear driving gear, a fourth-gear driving gear, a sixth-gear driving gear and a normally meshed driven gear;
the output shaft is sequentially provided with a reverse gear driven gear, a first-gear driven gear, a second-gear driven gear, a third-gear driven gear, a fourth-gear driven gear and a sixth-gear driven gear, and all the gear driven gears are sleeved on the output shaft in an empty mode; a first sliding sleeve is arranged between the first-gear driven gear and the second-gear driven gear, a second sliding sleeve is arranged between the third-gear driven gear and the fourth-gear driven gear, a third sliding sleeve is arranged between the sixth-gear driven gear and the normally meshed driving gear, and a fourth sliding sleeve is arranged between the reverse-gear driven gear and the first-gear driven gear;
the first sliding sleeve, the second sliding sleeve, the third sliding sleeve and the fourth sliding sleeve are all composed of a gear sleeve and a gear seat, the gear seat is fixedly connected with the output shaft, the gear sleeve and the gear seat are in clearance fit through splines, and the gear sleeve slides on the gear seat; the gear selecting and shifting executing mechanism is provided with an adjusting shifting fork which is embedded with the gear sleeve, so that the gear selecting and shifting executing mechanism pushes the gear sleeve to be meshed with the driven gears on two sides;
the first gear driving gear is normally meshed with the first gear driven gear, the second gear driving gear is normally meshed with the second gear driven gear, the third gear driving gear is normally meshed with the third gear driven gear, the fourth gear driving gear is normally meshed with the fourth gear driven gear, the sixth gear driving gear is normally meshed with the sixth gear driven gear, the first gear driving gear is also normally meshed with the reverse gear idler, and the reverse gear idler is normally meshed with the reverse gear driven gear.
Optionally, according to the AMT transmission shifting device of the present invention, a clutch speed and temperature sensor is provided at a position corresponding to the outer hub of the single clutch.
Optionally, according to the AMT gearshift device of the present invention, the constant mesh driving gear is in mesh transmission with the constant mesh driven gear, and an input shaft speed sensor is disposed at a position corresponding to the constant mesh driven gear.
Optionally, according to the AMT transmission shifting device of the present invention, the driving motor is arranged in parallel with the intermediate shaft, and an output end of the driving motor is provided with a driving gear, and an end of the intermediate shaft is provided with a driving driven gear, and the driving driven gear is engaged with the driving gear.
Optionally, according to the AMT gear shifting device of the present invention, two ends of the reverse driven gear, the first-gear driven gear, the second-gear driven gear, the third-gear driven gear, the fourth-gear driven gear and the sixth-gear driven gear are respectively provided with a combination tooth, and the combination teeth are mutually matched with the gear sleeve.
Optionally, according to the AMT transmission shifting device of the present invention, an adjusting groove is concavely provided on an outer side wall of the gear sleeve, and the shifting fork can be inserted into the adjusting groove, so that the shifting fork pushes the gear sleeve to slide along the outer side wall of the gear seat.
According to another aspect of the present invention, there is also provided a control method of an AMT transmission shifting device, comprising the AMT transmission shifting device of any one of the above embodiments and the steps of:
step S101, a speed change mechanism judges that the whole vehicle reaches a preset gear shifting target and sends a gear shifting instruction;
step S102, disengaging the single clutch and cutting off the power transmission of the engine;
step S103, the gear selecting and shifting executing mechanism executes neutral gear shifting, whether the neutral gear reaches a target position is judged, and if yes, the operation goes to step S104; if not, entering S102;
step S104, the driving motor adjusts the speed, and the power is transmitted to the intermediate shaft through the driving motor to achieve the purpose of adjusting the speed; judging whether the difference between the target gear rotating speed and the sliding sleeve rotating speed is smaller than a target value or not, and if so, entering S105; if not, returning to S104;
step S105, the driving motor is powered off, the power transmission between the driving motor and the middle shaft is cut off, and step S106 is executed;
step S106, the gear selecting and shifting executing mechanism executes gear engaging, whether the gear sleeve reaches the position of the target driven gear or not is judged, and if yes, the operation goes to step S107; if not, returning to S104;
and step S107, combining the single clutch to realize the power transmission of the engine.
The invention has the following beneficial effects:
1. the gear shifting synchronization process of the AMT transmission is simplified: the motor is adopted to drive and assist to realize synchronization, so that the synchronization speed is improved, and the control difficulty is reduced;
2. the service life of the gear shifting system of the AMT is prolonged: the synchronous is realized by the aid of the driving motor, a synchronizer synchronizing ring is cancelled, and a sliding sleeve is directly combined with gear shifting, so that the service life of the system is prolonged. Meanwhile, the influence of high and low temperature on the gear shifting function and performance is reduced;
3. the cost is reduced: all synchronizer synchronizing rings on the traditional AMT are cancelled, and motor driving is adopted for replacement, so that the cost is reduced; the more gears, the more obvious the cost reduction effect is, and one driving motor is adopted to replace synchronous rings (friction systems) of all synchronizers.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic illustration of the disclosed AMT transmission shifting device;
FIG. 2 is a schematic view of the sliding sleeve and the intermediate shaft disclosed in the present invention;
fig. 3 is a step chart of a control method of the disclosed AMT transmission shifting device.
Description of reference numerals: a-an engine; b-a dual mass flywheel; c-a single clutch; d-a speed change mechanism; e-a shift actuator; e1-drive motor; SC 1-first sliding sleeve; SC 2-second runner; SC 3-third sliding sleeve; SC 4-fourth runner; SC 1.1-toothholder; SC 1.2-tooth sleeve; SC 1.3-first engaging tooth; SC 1.4-second engaging tooth; SC 1.5-adjustment tank;
1-an input shaft; 10-a constant mesh drive gear;
2-intermediate shaft; 20-constant mesh driven gear; 21-first gear driving gear; 22-second gear driving gear; 23-a third gear driving gear; 24-a fourth gear drive gear; 26-a sixth gear driving gear;
3-an output shaft; 31-first gear driven gear; a 32-second gear driven gear; 33-third driven gear; 34-fourth gear driven gear; 36-sixth-gear driven gear; 37-reverse driven gear;
4-reverse gear shaft; 47-reverse idler; 51-clutch speed temperature sensor; 52-input shaft speed sensor; 61-a drive gear; 62-drive driven gear.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 and 2, the present invention provides a gear shifting device of an AMT transmission, which includes an engine a, a dual mass flywheel b, a single clutch c, and a transmission mechanism d.
A flywheel cavity is formed between the engine a and the speed change mechanism d, the dual-mass flywheel b is arranged in the flywheel cavity, and the dual-mass flywheel b is fixedly connected with the driving end of the single clutch c.
The speed change mechanism d comprises an input shaft 1, an output shaft 3, a reverse gear shaft 4, an intermediate shaft 2, a driving motor E1 and a gear selecting and shifting executing mechanism E, wherein the driven end of a single clutch c is connected with the input shaft 1, and a normally meshed driving gear 10 is arranged on the input shaft 1; the end part of the input shaft 1 is coaxially connected with the output shaft 3 through a bearing, the input shaft 1 is arranged on one side of the intermediate shaft 2 in parallel, and the intermediate shaft 2 is driven to rotate through a driving motor E1; the reverse gear shaft 4 is arranged on the other side of the intermediate shaft 2 in parallel, a reverse gear idle wheel 47 is arranged on the reverse gear shaft 4, and the reverse gear idle wheel 47 is sleeved on the reverse gear shaft 4 in an empty mode.
The intermediate shaft 2 is provided with a first-gear driving gear 21, a second-gear driving gear 22, a third-gear driving gear 23, a fourth-gear driving gear 24, a sixth-gear driving gear 26 and a normally meshed driven gear 20 in sequence.
The output shaft 3 is sequentially provided with a reverse gear driven gear 37, a first gear driven gear 31, a second gear driven gear 32, a third gear driven gear 33, a fourth gear driven gear 34 and a sixth gear driven gear 36, and all the gear driven gears are sleeved on the output shaft 3 in an empty way; a first sliding sleeve SC1 is arranged between the first-gear driven gear 31 and the second-gear driven gear 32, a second sliding sleeve SC2 is arranged between the third-gear driven gear 33 and the fourth-gear driven gear 34, a third sliding sleeve SC3 is arranged between the sixth-gear driven gear 36 and the normally meshed driving gear 10, and a fourth sliding sleeve SC4 is arranged between the reverse-gear driven gear 37 and the first-gear driven gear 31.
The first sliding sleeve SC1, the second sliding sleeve SC2, the third sliding sleeve SC3 and the fourth sliding sleeve SC4 are all composed of a tooth sleeve SC1.2 and a tooth holder SC1.1, the tooth holder SC1.1 is fixedly connected with the output shaft 3, the tooth sleeve SC1.2 is in clearance fit with the tooth holder SC1.1 through splines, and the tooth sleeve SC1.2 slides on the tooth holder SC 1.1; the gear selecting and shifting executing mechanism e is provided with an adjusting shifting fork which is embedded with the gear sleeve SC1.2, so that the gear selecting and shifting executing mechanism e pushes the gear sleeve SC1.2 to be meshed with the driven gears on the two sides.
The first-gear driving gear 21 is normally meshed with the first-gear driven gear 31, the second-gear driving gear 22 is normally meshed with the second-gear driven gear 32, the third-gear driving gear 23 is normally meshed with the third-gear driven gear 33, the fourth-gear driving gear 24 is normally meshed with the fourth-gear driven gear 34, the sixth-gear driving gear 26 is normally meshed with the sixth-gear driven gear 36, the first-gear driving gear 21 is also normally meshed with the reverse idler gear 47, and the reverse idler gear 47 is normally meshed with the reverse driven gear 37.
In the implementation process, after the vehicle is started, in the starting stage, the speed change mechanism d enters a starting mode, the single clutch c enters a slip film state, the torque starts to be transmitted, the vehicle starts to start, the clutch finally reaches a combined state along with the gradual increase of the pressure of the clutch, the vehicle speed is increased within a certain range, and the vehicle finishes starting.
In the vehicle gear shifting process, taking first gear shifting and second gear shifting as an example, the control unit sends a gear shifting command, the single clutch c is completely disengaged, and the gear shifting execution mechanism executes gear shifting action until the gear sleeve SC1.2 is in a neutral position; the control unit judges a target gear shifting rotation speed difference according to the vehicle speed and the input shaft 1 rotation speed sensor, controls the driving motor E1 to regulate the speed until the shifting rotation speed difference reaches a target, and drives the motor E1 to rotate so as to drive the intermediate shaft 2; meanwhile, the gear shifting actuating mechanism executes a gear engaging action until the gear sleeve SC1.2 is combined with a target gear (such as a first-gear driven gear 31 or a second-gear driven gear 32 in fig. 1), so that the output shaft 3 and the driven gear on the gear are synchronously rotated after the gear sleeve is combined, the input shaft 1 is combined with the output shaft 3, and the single clutch c is combined to transmit power, so that the gear is switched to a preset gear. The whole process from gear disengagement to gear shifting of the AMT gearbox is realized.
Furthermore, a clutch speed and temperature sensor 51 is arranged at a position corresponding to the outer hub of the single clutch c, so that the speed and the temperature of the single clutch c can be monitored in real time.
Further, the constant mesh driving gear 10 is in mesh transmission with the constant mesh driven gear 20, and an input shaft speed sensor 52 is arranged at a position corresponding to the constant mesh driven gear 20.
Further, the driving motor E1 is disposed in parallel with the intermediate shaft 2, and the output end of the driving motor E1 is provided with a driving gear 61, and the end of the intermediate shaft 2 is provided with a driving driven gear 62, and the driving driven gear 62 is engaged with the driving gear 61. When the transmission system is implemented, the front end of the intermediate shaft 2 of the AMT transmission system is provided with the driving motor E1 in parallel to drive the driven gear 62 and the driving gear 61, so that the speed reduction and the torque increase are facilitated.
Furthermore, the two ends of the reverse gear driven gear 37, the first gear driven gear 31, the second gear driven gear 32, the third gear driven gear 33, the fourth gear driven gear 34 and the sixth gear driven gear 36 are respectively provided with a combination tooth, and the combination teeth are matched with the gear sleeve SC 1.2. As shown in fig. 2, taking the first-speed driven gear 31 and the second-speed driven gear 32 as an example, the first-speed driven gear 31 is provided with a first engaging tooth SC1.3, and the second-speed driven gear 32 is provided with a second engaging tooth SC1.4, which can shorten the distance between the target gear and the sleeve gear SC1.2, thereby facilitating the gear selecting and shifting actuator e to quickly perform a gear shifting operation.
Further, an adjusting groove SC1.5 is concavely arranged on the outer side wall of the gear sleeve SC1.2, and the shifting fork can be embedded into the adjusting groove SC1.5, so that the shifting fork can push the gear sleeve SC1.2 to slide along the outer side wall of the gear seat SC 1.1.
As shown in fig. 3, the present invention further provides a control method of the gear shifting device of the AMT transmission, comprising the gear shifting device of the AMT transmission in any one of the above embodiments and the steps of:
step S101, a speed change mechanism d judges that the whole vehicle reaches a preset gear change target and sends a gear change instruction;
step S102, disengaging the single clutch c and cutting off the power transmission of the engine a;
step S103, the gear selecting and shifting executing mechanism executes neutral gear shifting, whether the neutral gear reaches a target position is judged, and if yes, the operation goes to step S104; if not, entering S102;
step S104, the driving motor E1 regulates the speed, and the power is transmitted to the intermediate shaft 2 through the driving motor E1, so that the speed regulation purpose is achieved; judging whether the difference between the target gear rotating speed and the sliding sleeve rotating speed is smaller than a target value or not, and if so, entering S105; if not, returning to S104;
step S105, the driving motor E1 is powered off, the power transmission between the driving motor E1 and the intermediate shaft 2 is cut off, and simultaneously, the step S106 is executed;
step S106, the gear selecting and shifting executing mechanism executes gear engaging, whether the gear sleeve SC1.2 reaches the position of the target driven gear is judged, and if yes, the operation goes to step S107; if not, returning to S104;
and step S107, the single clutch c is combined to realize the power transmission of the engine a.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (7)

1. The AMT transmission gear shifting device is characterized by comprising an engine, a dual-mass flywheel, a single clutch and a speed change mechanism;
a flywheel cavity is formed between the engine and the speed change mechanism, the dual-mass flywheel is arranged in the flywheel cavity, and the dual-mass flywheel is fixedly connected with the driving end of the single clutch;
the speed change mechanism comprises an input shaft, an output shaft, a reverse gear shaft, an intermediate shaft, a driving motor and a gear selecting and shifting executing mechanism, wherein a driven end of the single clutch is connected with the input shaft, and a normally meshed driving gear is arranged on the input shaft; the end part of the input shaft is coaxially connected with the output shaft through a bearing, the input shaft is arranged on one side of the intermediate shaft in parallel, and the intermediate shaft is driven to rotate by the driving motor; the reverse gear shaft is arranged on the other side of the intermediate shaft in parallel, a reverse gear idler wheel is arranged on the reverse gear shaft, and the reverse gear idler wheel is sleeved on the reverse gear shaft in an empty mode;
the intermediate shaft is sequentially provided with a first-gear driving gear, a second-gear driving gear, a third-gear driving gear, a fourth-gear driving gear, a sixth-gear driving gear and a normally meshed driven gear;
the output shaft is sequentially provided with a reverse gear driven gear, a first-gear driven gear, a second-gear driven gear, a third-gear driven gear, a fourth-gear driven gear and a sixth-gear driven gear, and all the gear driven gears are sleeved on the output shaft in an empty mode; a first sliding sleeve is arranged between the first-gear driven gear and the second-gear driven gear, a second sliding sleeve is arranged between the third-gear driven gear and the fourth-gear driven gear, a third sliding sleeve is arranged between the sixth-gear driven gear and the normally meshed driving gear, and a fourth sliding sleeve is arranged between the reverse-gear driven gear and the first-gear driven gear;
the first sliding sleeve, the second sliding sleeve, the third sliding sleeve and the fourth sliding sleeve are all composed of a gear sleeve and a gear seat, the gear seat is fixedly connected with the output shaft, the gear sleeve and the gear seat are in clearance fit through splines, and the gear sleeve slides on the gear seat; the gear selecting and shifting executing mechanism is provided with an adjusting shifting fork which is embedded with the gear sleeve, so that the gear selecting and shifting executing mechanism pushes the gear sleeve to be meshed with the driven gears on two sides;
the first gear driving gear is normally meshed with the first gear driven gear, the second gear driving gear is normally meshed with the second gear driven gear, the third gear driving gear is normally meshed with the third gear driven gear, the fourth gear driving gear is normally meshed with the fourth gear driven gear, the sixth gear driving gear is normally meshed with the sixth gear driven gear, the first gear driving gear is also normally meshed with the reverse gear idler, and the reverse gear idler is normally meshed with the reverse gear driven gear.
2. The AMT transmission shifting apparatus of claim 1, wherein a clutch speed and temperature sensor is provided at a position corresponding to the outer hub of the single clutch.
3. The AMT transmission shifting device of claim 1, wherein the constant mesh driving gear is in mesh transmission with the constant mesh driven gear, and an input shaft speed sensor is arranged at a position corresponding to the constant mesh driven gear.
4. The AMT transmission shifting apparatus of claim 1, wherein the drive motor is arranged in parallel with the countershaft and the output of the drive motor is provided with a drive pinion gear, the end of the countershaft being provided with a drive driven gear, the drive driven gear being meshed with the drive pinion gear.
5. The AMT transmission shifting device of claim 1, wherein the reverse driven gear, the first driven gear, the second driven gear, the third driven gear, the fourth driven gear and the sixth driven gear are provided with engaging teeth at both ends, and the engaging teeth are matched with the gear sleeve.
6. The AMT transmission shifting device according to claim 1, wherein an adjusting groove is concavely arranged on the outer side wall of the gear sleeve, and the shifting fork can be inserted into the adjusting groove, so that the shifting fork pushes the gear sleeve to slide along the outer side wall of the gear seat.
7. A control method of an AMT transmission shifting device, characterized by comprising the AMT transmission shifting device of any one of claims 1 to 6 and the steps of:
step S101, a speed change mechanism judges that the whole vehicle reaches a preset gear shifting target and sends a gear shifting instruction;
step S102, disengaging the single clutch and cutting off the power transmission of the engine;
step S103, the gear selecting and shifting executing mechanism executes neutral gear shifting, whether the neutral gear reaches a target position is judged, and if yes, the operation goes to step S104; if not, entering S102;
step S104, the driving motor adjusts the speed, and the power is transmitted to the intermediate shaft through the driving motor to achieve the purpose of adjusting the speed; judging whether the difference between the target gear rotating speed and the sliding sleeve rotating speed is smaller than a target value or not, and if so, entering S105; if not, returning to S104;
step S105, the driving motor is powered off, the power transmission between the driving motor and the middle shaft is cut off, and step S106 is executed;
step S106, the gear selecting and shifting executing mechanism executes gear engaging, whether the gear sleeve reaches the position of the target driven gear or not is judged, and if yes, the operation goes to step S107; if not, returning to S104;
and step S107, combining the single clutch to realize the power transmission of the engine.
CN202111205583.8A 2021-10-15 2021-10-15 Gear shifting device of AMT (automated mechanical transmission) and control method Pending CN113833840A (en)

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CN202111205583.8A CN113833840A (en) 2021-10-15 2021-10-15 Gear shifting device of AMT (automated mechanical transmission) and control method

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CN202111205583.8A CN113833840A (en) 2021-10-15 2021-10-15 Gear shifting device of AMT (automated mechanical transmission) and control method

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102840309A (en) * 2012-09-18 2012-12-26 清华大学 Synchronizer-free shifting system for regulating speed of intermediate shaft of electric automobile
CN204610718U (en) * 2015-03-24 2015-09-02 杭州前进齿轮箱集团股份有限公司 A kind of full double-cone synchronizer 6 grades of automobile-used speed changers of city bus
CN207921246U (en) * 2017-12-29 2018-09-28 綦江齿轮传动有限公司 It can be used for 4 speed transmission of combined type of hybrid power system and pure electric system simultaneously
CN110005767A (en) * 2019-04-16 2019-07-12 杨斌彬 The step change transmission of mechanical uninterruptible power

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102840309A (en) * 2012-09-18 2012-12-26 清华大学 Synchronizer-free shifting system for regulating speed of intermediate shaft of electric automobile
CN204610718U (en) * 2015-03-24 2015-09-02 杭州前进齿轮箱集团股份有限公司 A kind of full double-cone synchronizer 6 grades of automobile-used speed changers of city bus
CN207921246U (en) * 2017-12-29 2018-09-28 綦江齿轮传动有限公司 It can be used for 4 speed transmission of combined type of hybrid power system and pure electric system simultaneously
CN110005767A (en) * 2019-04-16 2019-07-12 杨斌彬 The step change transmission of mechanical uninterruptible power

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Application publication date: 20211224