CN107725758B - Control actuating mechanism of stay cable type clutch and actuating method thereof - Google Patents
Control actuating mechanism of stay cable type clutch and actuating method thereof Download PDFInfo
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- CN107725758B CN107725758B CN201711143121.1A CN201711143121A CN107725758B CN 107725758 B CN107725758 B CN 107725758B CN 201711143121 A CN201711143121 A CN 201711143121A CN 107725758 B CN107725758 B CN 107725758B
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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
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/75—Features relating to adjustment, e.g. slack adjusters
- F16D13/757—Features relating to adjustment, e.g. slack adjusters the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
- F16H63/3043—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force comprising friction clutches or brakes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention provides a control actuating mechanism of a guy cable type clutch and an actuating method thereof, wherein the actuating mechanism consists of a guy cable actuating component and a guy cable driving component; the pull cable execution assembly consists of a pull cable, a shaft sleeve and a release bearing, wherein one end of the pull cable is connected with the driving tail end of the pull cable driving assembly, the other end of the pull cable penetrates through a central hole of a gear shaft provided with a clutch, the release bearing is coaxially arranged on the outer side of the clutch, and the tail end of the pull cable penetrates through the release bearing and is fixed on the outer side of the release bearing; the shaft sleeve is arranged on the gear shaft through a bearing and is axially positioned through a shaft shoulder and a clamp spring, the inner ring of the release bearing is sleeved on the shaft sleeve, the gear shaft freely rotates relative to the release bearing, and the release bearing only axially moves linearly under the driving of the inhaul cable. The executing method drives the inhaul cable to extend or shorten through the inhaul cable driving component so as to control the clutch to separate or combine. The invention has stable and reliable performance, simple and compact structure and good control performance.
Description
Technical Field
The invention belongs to the technical field of automatic clutches in mechanical automatic transmissions of pure electric vehicles, and particularly relates to a control actuating mechanism of a stay cable type clutch and an actuating method thereof.
Background
In recent years, pure electric vehicles are developing and market share is increasing. With the gradual maturity of the pure electric vehicle market, users put higher demands on comfort, dynamic property and economy. In order to meet the higher and higher use requirements of users, more and more pure electric vehicles are provided with two-gear and three-gear transmissions for driving motors, and the multi-gear driving system of the electric vehicle is an important development trend of the pure electric vehicles nowadays.
Aiming at the performance characteristics of the pure electric vehicle, chinese patent: a power-interruption-free gear-shifting gearbox of an electric vehicle and a gear-shifting control method (CN 105864368A) thereof are disclosed, and in the technical scheme of the patent, a two-gear mechanical automatic transmission for a pure electric vehicle based on a dry clutch and a one-way clutch is provided. The controllable one-way clutch and the friction plate dry clutch are combined to realize the unpowered interruption switching of the two gears, so that the dynamic property, the comfort property and the economical efficiency of the high-purity electric vehicle can be obviously improved. The automatic control of the combination and separation processes of the dry clutch is a key technology of the transmission, and the quality of the control performance directly influences the gear shifting quality and the comfort of the whole vehicle.
The existing dry clutch is generally applied to a traditional internal combustion engine automobile, and the clutch is arranged between an engine and a gearbox to control the cut-off or transmission of power. Correspondingly, the clutch actuator usually takes the form of a fork shaft, and the two ends of the fork shaft are connected to the housing by means of a copper bush. However, when the structure is used in the above-mentioned "electric vehicle unpowered interrupt gear shifting gearbox", on one hand, since the gearbox housing is connected with the driving motor instead of the internal combustion engine, in order to support the shift fork shaft, a bracket needs to be additionally arranged for the shift fork shaft, the shape of the gearbox housing becomes complicated inevitably, and the stress condition is severe; on the other hand, due to the particularity of the shift fork shaft and the connection structure thereof, the shift fork shaft must span the whole clutch periphery, so that the length of the shift fork shaft for the 'electric vehicle unpowered interruption gear shifting gearbox' is one time or more longer than that of the traditional shift fork shaft, the rigidity of the shift fork shaft is reduced, and the separation effect of the clutch is deteriorated.
To sum up, be applied to clutch actuating mechanism on pure electric motor car derailleur, because electric motor car power assembly structure is different with the internal-combustion engine power assembly structure of tradition car, does not have the connection of engine housing and gearbox casing, it has following problem:
1. the support of the rotating shaft of the actuating mechanism is difficult to realize, which leads to the complex structure of the shell;
2. the reduction of the rigidity of the shift fork shaft type actuating mechanism caused by long span results in poor function effect of the clutch, and the poor rigidity of the system is not beneficial to realizing accurate automatic control.
Disclosure of Invention
In view of the defects in the prior art, the invention provides a control executing mechanism of a pull-cable type clutch and an executing method thereof, wherein the control executing mechanism of the pull-cable type clutch is used for a gearbox of a pure electric vehicle, has the advantages of few parts, stable and reliable performance, simple and compact structure, good system rigidity and good control performance, and does not need to arrange a complex shaft support structure on a shell. The technical scheme of the invention is as follows by combining the attached drawings of the specification:
a control actuating mechanism of a guy cable type clutch is matched and connected with a shaft system structure of a pure electric vehicle gearbox and consists of a guy cable actuating component and a guy cable driving component;
the pull cable executing assembly consists of a pull cable, a shaft sleeve and a release bearing, wherein one end of the pull cable is connected with the driving tail end of the pull cable driving assembly, the other end of the pull cable penetrates through a central hole of a gear shaft provided with a clutch, the release bearing is coaxially arranged on the outer side of the clutch, and the tail end of the pull cable penetrates through the release bearing and is fixed on the outer side of the release bearing; the shaft sleeve is arranged on the gear shaft through a bearing and is axially positioned through a shaft shoulder and a clamp spring, an inner ring of the release bearing is sleeved on the shaft sleeve, the gear shaft freely rotates relative to the release bearing, and the release bearing only makes linear motion along the axial direction under the driving of the inhaul cable driving assembly;
furthermore, an external thread is processed at one end of the stay cable connected with the release bearing, and the stay cable is in threaded connection with the adjusting nut to realize the adjustment and fixation of the relative position of the stay cable and the release bearing.
Furthermore, the inhaul cable driving assembly is an automatic inhaul cable driving assembly and consists of a driving motor, a worm wheel, a rotating shaft, a winding wheel, a power-assisted spring, a vehicle state sensor and a gear shifting controller;
the driving motor is fixed on the gearbox shell through a driving motor bracket; the worm is coaxially connected with the driving motor and meshed with a worm wheel, the worm wheel is fixedly arranged at one end of the rotating shaft, and the winding wheel is fixedly arranged at the other end of the rotating shaft; the power-assisted spring is sleeved on the rotating shaft, one end of the power-assisted spring is connected to the winding wheel and rotates along with the winding wheel, and the other end of the power-assisted spring is relatively fixed; an annular groove is formed in the outer circumferential surface of the winding wheel, one end of the inhaul cable is fixed on the winding wheel and is wound in the annular groove along the circumferential direction of the winding wheel, and the inhaul cable is guaranteed to be axially straight when wound or released;
the signal input end of the gear shifting controller is connected with the vehicle state sensor, the signal output end of the gear shifting controller is connected with the driving motor, the gear shifting controller processes vehicle state signals and sends control instructions to the driving motor, and then the driving motor is controlled to drive the inhaul cable to execute assembly movement, and separation or combination of the clutch is achieved.
Furthermore, D-shaped holes are formed in the centers of the worm wheel and the winding wheel, the sections of shaft sections of the rotating shaft, which are connected with the worm wheel and the winding wheel, are both in a D shape matched with the D-shaped holes, the rotating shaft is respectively connected with the worm wheel and the winding wheel through the D-shaped shaft sections to carry out circumferential limiting, and the rotating shaft is respectively connected with the worm wheel and the winding wheel through a shaft shoulder and a clamp spring to carry out axial limiting, so that torque is reliably transmitted among the worm wheel, the rotating shaft and the winding wheel;
furthermore, the vehicle state sensor consists of an angle sensor for detecting the rotating angle of the rotating shaft, an accelerator pedal depth sensor, a vehicle speed sensor and a brake pedal depth sensor;
the angle sensor is located at the shaft end of the rotating shaft, the shape of the shaft end of the rotating shaft is matched with a rotor connecting groove of the angle sensor, and the rotating shaft drives the rotor of the angle sensor to synchronously rotate so as to detect and obtain the real-time rotating angle of the rotating shaft.
Furthermore, the inhaul cable driving assembly is an inhaul cable manual driving assembly and consists of a pedal and a guide wheel;
the middle part of the pedal is hinged to the vehicle body, the top end of the pedal is connected with the inhaul cable, the inhaul cable is tangent to the outer circumference of the guide wheel, and when a driver steps on the pedal, the inhaul cable moves linearly along the axis direction of the inhaul cable under the guiding action of the guide wheel.
An execution method of a dragline clutch control execution mechanism is based on a dragline automatic driving assembly and comprises a clutch separation execution method and a clutch combination execution method, wherein the execution method comprises the following steps:
the clutch separation executing method comprises the following steps: the gear shifting controller processes vehicle state signals detected and sent by a vehicle state sensor, then gear shifting judgment is made, and a clutch separation instruction is sent out, at the moment, the gear shifting controller controls a driving motor to rotate in the positive direction and sequentially drives a worm, a worm wheel, a rotating shaft and a winding wheel to rotate in the positive direction, a stay cable is wound along the winding wheel, an assisting spring is changed from a tensioning state to a free state, the elastic restoring force of the assisting spring is used as assisting force for inward elastic deformation of a diaphragm spring, the driving motor is helped to overcome the elastic force of the diaphragm spring to do work, the winding wheel rotates to pull the stay cable, and then a separation bearing is pulled to linearly move towards the clutch along the axis of the separation bearing, so that a separation finger of a diaphragm spring inner ring is pressed into the separation bearing, a pressure plate of a diaphragm spring outer ring moves towards the direction far away from a friction plate, no torque is transmitted between the pressure plate and the friction plate, and the clutch completes the separation process;
the clutch combination execution method comprises the following steps: the gear shifting controller processes vehicle state signals detected and sent by the vehicle state sensor, then gear shifting judgment is made, and a clutch combination instruction is sent out, at the moment, the gear shifting controller controls the driving motor to rotate reversely and drives the worm, the worm wheel, the rotating shaft and the winding wheel to rotate reversely in sequence, the stay cable is released along the winding wheel, the power spring is changed from a free state to a tensioning state, the elastic restoring force of the power spring is used as the resistance of inward elastic deformation of the diaphragm spring, the driving motor is helped to overcome the elastic force of the diaphragm spring to do work, the stay cable is released by rotation of the winding wheel, under the pushing of the elastic force of the diaphragm spring, the release bearing is far away from the clutch to move linearly along the axis of the release cable, the pressure plate at the outer end of the diaphragm spring moves towards the direction close to the friction plate, the pressure plate and the friction plate are tightly pressed to transmit torque, and the clutch completes the combination process.
Furthermore, in the process of executing the clutch separation and executing the clutch combination, the gear shifting controller judges the position of the release bearing and the corresponding coupling state of the clutch by receiving a rotation angle signal of the rotating shaft in real time, calculates the movement speed of the release bearing according to the position, corrects the instantaneous movement speed of the release bearing by controlling the output torque of the driving motor, further controls the time of the slipping process of the clutch, and ensures the gear shifting quality and the driving comfort of the gearbox.
Further, the method also comprises a method for automatically compensating the abrasion of the friction plate in the clutch executing process; the automatic friction plate wear compensation method comprises the following steps: according to the actual degree of wear of friction disc, under the control of shift controller, driving motor counter-rotation drives the reel anticlockwise rotation certain angle, is about to release a distance to release cable to release bearing's direction, makes cable extreme position on the reel anticlockwise rotation certain angle than initial position, and release bearing moves to the direction of keeping away from the friction disc under diaphragm spring's counter-force effect, can realize the automatic compensation of clutch friction disc wearing and tearing.
An execution method of a stay cable type clutch control execution mechanism is based on a stay cable manual driving assembly and comprises a clutch separation execution method and a clutch combination execution method, wherein the execution method comprises the following steps:
the clutch separation executing method comprises the following steps: when a driver sends an intention of separating the clutch and steps on the pedal, a hook at the top end of the pedal pulls the inhaul cable, the inhaul cable stably moves along the axial direction under the guiding action of the guide wheel, the inhaul cable pulls the release bearing to move towards the direction close to the clutch along the axial direction of the inhaul cable, the release finger at the inner ring of the diaphragm spring is pressed in, the pressure plate at the outer ring of the diaphragm spring moves towards the direction far away from the friction plate, no torque is transmitted between the pressure plate and the friction plate, and the clutch finishes the separation process;
the clutch combination execution method comprises the following steps: when the driver sends the intention of combining the clutch and gradually loosens the pedal, the inhaul cable is released along the guide wheel under the action of the elastic force of the diaphragm spring; the elasticity of the diaphragm spring pushes the release bearing to move along the axis of the release bearing in the direction far away from the friction plate, so that the pressure plate at the outer end of the diaphragm spring moves in the direction close to the friction plate, the elastic force provided by the diaphragm spring enables the pressure plate to compress the friction plate, torque is transmitted between the pressure plate and the friction plate, and the clutch completes the combination process.
Compared with the prior art, the invention has the beneficial effects that:
1. for a pure electric vehicle gearbox, the control actuating mechanism of the pull-rope clutch does not need additional parts such as a shifting fork shaft support and the like, does not need to change a shell, simplifies parts such as a shifting fork shaft, copper sleeves at two ends, a rocker arm and the like in the traditional scheme, and is simple in structure, low in device cost and high in reliability.
2. The last link of the stay cable type clutch control actuating mechanism is not the declutch shift shaft, but the stay cable directly drives the release bearing, so that the problem of deformation of the declutch shift shaft is avoided, the actuating mechanism has good functional effect and stable performance, and the precision of automatic control can be improved.
3. Compared with other electric control mechanical automatic clutch actuating mechanisms, the pull-cable clutch control actuating mechanism converts the tiny axial movement of the release bearing into large-angle rotation of the winding wheel, can meet the use requirement only by arranging a one-stage worm gear speed reducing mechanism under the same condition, does not need to use two-stage speed reducing mechanisms, and is compact in structure and easy to arrange.
4. According to the clutch actuating mechanism, after a friction plate of the plate clutch is abraded, compensation can be achieved only by adjusting the rotation angle of the winding wheel at the limit position according to the abrasion loss, and the clutch actuating mechanism is simple and reliable in compensation function, easy to achieve and good in compensation effect.
Drawings
FIG. 1 is an isometric view of the outer overall structure of the control actuator of the pull-cord clutch of the present invention;
FIG. 2 is a schematic view of the internal structure of the control actuator of the cable clutch of the present invention after being installed in cooperation with the transmission case;
FIG. 3 is a schematic diagram of the control actuator of the dragline clutch according to the present invention, with the clutch in a disengaged state when the dragline automatic drive assembly is employed;
FIG. 4 is a schematic diagram of the control actuator of the dragline clutch according to the present invention, with the clutch engaged when the dragline automatic drive assembly is employed;
FIG. 5 is a schematic view of the control actuator of the cable clutch according to the present invention, with the clutch in a disengaged state when the cable manual actuation assembly is employed;
FIG. 6 is a schematic view of the control actuator of the cable clutch according to the present invention, with the clutch engaged when the cable manual actuation assembly is used;
in the figure:
| 1-a gearbox shell, | 2-gear shaft, | 3-hollow sleeve shaft, | 4-flywheel disc, |
| 5-clutch, | 6-clutch cover, | 7-diaphragm spring, | 8-pressing plate, |
| 9-friction plate, | 10-support bearing, | 11-needle roller bearing, | 12-motor support, |
| 13-driving motor, | 14-a worm screw, which is provided with a screw thread, | 15-worm wheel, | 16-a rotating shaft, |
| 17-winding wheel, | 18-booster springs (coil springs), | 19-a guy cable, | 20-shaft sleeve, |
| 21-release bearing, | 22-angle sensor, | 23-adjusting nut, | 24-gear shaft gear, |
| 25-pinion of differential, | 26-an empty sleeve shaft gear, | 27-a pedal, | 28-guide wheel. |
Detailed Description
In order to further illustrate the technical scheme of the invention, the specific implementation mode of the invention is as follows by combining the drawings in the specification:
it should be noted that the control actuating mechanism of the pull-cable clutch is used in cooperation with a two-gear gearbox for a pure electric vehicle, and the clutch controlled by the control actuating mechanism mounted on a gearbox gear shaft is separated or combined to realize power-interruption-free gear shifting. In order to clearly illustrate the composition and the connection structure of the clutch control actuator and the specific application effect thereof in practical application, the following will first briefly illustrate the structure of a transmission shaft system used in cooperation with the dragline clutch control actuator of the present invention:
as shown in fig. 2, the transmission shafting structure cooperatively connected with the present invention includes a transmission housing 1, a gear shaft 2, a hollow sleeve shaft 3, a flywheel disk 4 and a clutch 5; wherein, the clutch 5 is composed of a clutch cover 6, a diaphragm spring 7, a pressure plate 8 and a friction plate 9.
The gear shaft 2 is a hollow shaft with a through hole on the central axis, and the through hole is used for a guy cable 19 in the clutch control actuating mechanism to pass through; one end of the gear shaft 2 is rotatably arranged on the gearbox shell 1 through a support bearing 10, and the other end of the gear shaft 2 is connected with the hollow shaft 3 in a matching way through two groups of needle roller bearings 11 distributed along the axis; in addition, a corresponding gear shaft gear 24 and a differential pinion 25 are fixedly connected to the gear shaft 2; the shaft end of the gear shaft 2 is coaxially connected with a friction plate 9 of the clutch 5 through a spline to transmit torque, so that the friction plate 9 and the gear shaft 2 synchronously rotate.
As described above, the inner circumferential surface of the hollow shaft 3 is fitted to the gear shaft 2 via the two sets of needle bearings 11, and the outer circumferential surface of the hollow shaft 3 is rotatably mounted on the housing 1 via the bearings; in addition, a corresponding idle sleeve shaft gear 26 is fixedly connected to the idle sleeve shaft 3; and the shaft end surface of the hollow sleeve shaft 3 is fixedly connected with the inner side of the flywheel disc 4 through a bolt so as to realize synchronous rotation of the hollow sleeve shaft and the flywheel disc.
The clutch cover 6 of the clutch 5 is bolted to the outside of the flywheel disc 4, thereby securing the entire clutch assembly to the flywheel disc 4. This causes the clutch cover 6, diaphragm spring 7 and pressure plate 8 in the clutch 5 to rotate synchronously with the flywheel disc 4 and the quill 3. When the separation finger part of the inner ring of the diaphragm spring 7 in the clutch 5 is pressed to move inwards to a certain position, the clutch 5 is in a separation state, at the moment, the flywheel disc 4, the pressure plate 8 and the friction plate 9 positioned between the flywheel disc 4 and the pressure plate 8 are in a non-clamping state, namely, the pressure is low, and no friction force is generated, at the moment, only the flywheel disc 4 and the pressure plate 8 rotate synchronously among the flywheel disc 4, the pressure plate 8 and the friction plate 9, and a rotation speed difference exists between the friction plate 9 and the rest two; when the separation finger part of the inner ring of the diaphragm spring 7 is not pressed, the separation finger of the inner ring of the diaphragm spring 7 protrudes outwards under the action of the elastic force of the diaphragm spring, the clutch 5 is in a combined state, and the flywheel disc 4, the pressure plate 8 and the friction plate 9 positioned between the flywheel disc and the pressure plate are in a clamping state, namely, the pressure is higher, so that friction force is generated, and torque can be transmitted through the generated friction force, so that the flywheel disc 4, the pressure plate 8 and the friction plate 9 synchronously rotate.
The transmission shafting structure and the clutch 5 are matched for use, so that the following effects can be obtained: when the clutch 5 is disengaged, the diaphragm spring 7, the clutch cover 6, the pressure plate 8, the flywheel plate 4 and the hollow sleeve shaft 3 synchronously rotate; the friction plate 9 and the gear shaft 2 rotate synchronously, and a rotation speed difference is allowed between the pressure plate 8 and the friction plate 9; when the clutch is combined, torque can be transmitted among the friction plate 9, the pressure plate 8 and the flywheel plate 4 to enable the friction plate, the pressure plate 8 and the flywheel plate 4 to synchronously rotate, so that the clutch assembly 5, the gear shaft 2 and the free sleeve shaft 3 synchronously rotate, and the rotation speed difference is not allowed to exist. The gearbox proposed in the chinese patent "an electric vehicle unpowered interruption shift gearbox and shift control method (CN 105864368 a)" utilizes the above-mentioned transmission shafting structure to control the switching between two gears by controlling the separation or combination of the clutch 5: when the clutch 5 is in a separated state, the first gear state is achieved; when the clutch 5 is in a combined state, the clutch is in a two-gear state, the power interruption in the gear shifting process is eliminated by using the sliding grinding process of the clutch, and finally the gear shifting without power interruption is realized.
The pull-cable clutch control actuating mechanism of the invention controls the separation or combination of the clutch through the pull cable to realize the gear shifting process, and the composition and the connection relation of the pull-cable clutch control actuating mechanism of the invention and a corresponding clutch control actuating method are concretely described through specific embodiments.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, the present invention provides a control and execution mechanism of a dragline clutch, which is composed of a dragline execution component and a dragline driving component; as shown in fig. 2, the cable actuating assembly is composed of a cable 19, a shaft sleeve 20, a release bearing 21 and an adjusting nut 23; the cable driving assembly is a cable automatic driving assembly and consists of a motor support 12, a driving motor 13, a worm 14, a worm wheel 15, a rotating shaft 16, a rolling wheel 17, a power spring 18, a vehicle state sensor and a gear shifting controller (TCU), wherein the vehicle state sensor comprises an angle sensor 22, an accelerator pedal depth sensor, a vehicle speed sensor and a brake pedal depth sensor. In addition, the control actuating mechanism of the dragline clutch further comprises the following auxiliary components: the shell execution mechanism shell is used for coating the output end of the driving motor, the worm 14, the worm wheel 15 and part of the rotating shaft 2, and is also used for isolating pollution; a vehicle-mounted power supply for supplying energy to the drive motor; bolts for mechanical connection and wires for electrical connection, etc.
The motor bracket 12 is fastened to the transmission case 1 by bolts, and the driving motor 13 is fastened to the driving motor bracket 12 by bolts. The driving motor 13 is powered by a vehicle-mounted power supply, and the size and the direction of the generated shifting torque are controlled by a shifting controller (TCU).
The output end of the driving motor 13 is coaxially connected with one end of a worm 14, and the other end of the worm 14 is rotatably connected with the executing mechanism shell through a copper sleeve. The worm 14 and the worm wheel 15 are meshed to form a primary speed reducing mechanism of the transmission chain, and the rotation of the driving motor 13 can drive the worm 14 to rotate at a high speed, so as to drive the worm wheel 15 to rotate at a low speed along the axis of the worm wheel.
A D-shaped through hole is formed in the center of the worm wheel 15, a D-shaped shaft at one end of the rotating shaft 16 penetrates through the D-shaped through hole in the worm wheel 15, the worm wheel 16 and the rotating shaft 16 are limited in the circumferential direction, the worm wheel 15 is in coaxial transmission connection with the rotating shaft 16, and the gear shifting torque can be reliably transmitted between the worm wheel 15 and the rotating shaft in the connection mode. In addition, the worm wheel 15 is axially limited by a shoulder on the rotating shaft 16 and a clamp spring. When the worm wheel 15 and the worm 14 are meshed for rotation, the rotating shaft 16 can realize synchronous rotation around the axis thereof.
And two ends of the rotating shaft 16 are rotatably connected with the actuating mechanism shell through a copper sleeve. The other end of the rotating shaft 16 is also arranged into a D-shaped shaft shape and is matched with a D-shaped hole on the end surface of the rolling wheel 17, so that the rolling wheel 17 and the rotating shaft 16 are limited in the circumferential direction, the rolling wheel 17 is in coaxial transmission connection with the rotating shaft 16, and the reliable transmission of gear shifting torque between the rolling wheel 17 and the rotating shaft 16 is ensured in the connection mode. The winding wheel 17 is positioned and fastened by a shaft shoulder and a clamping spring on the rotating shaft 16, so that when the rotating shaft 16 rotates, the winding wheel 17 can synchronously rotate around the axis of the rotating shaft 16. The axle head that pivot 16 and winding wheel 17 are connected one side mills and uses for flat plug and angle sensor 22 cooperation, and in the flat plug end of pivot 16 inserted angle sensor 22's rotor connection groove when the assembly, when pivot 16 rotated, can drive angle sensor 22's rotor and rotate to detect the real-time turned angle who obtains pivot 16.
As mentioned above, the end face of the winding wheel 17 is provided with a D-shaped through hole which is matched with the rotating shaft 16 to transmit the gear shifting torque, in addition, the circumference of the winding wheel 17 is also provided with an annular semicircular groove, the inhaul cable 19 is wound in the semicircular groove, and the semicircular groove plays a guiding role for the inhaul cable 19. A bolt hole is arranged in the semicircular groove on the circumference of the winding wheel 17 and used for fastening one end of the cable 19, so that when the axis of the cable 19 is tangent to the circumference of the winding wheel 17, the cable 19 can be wound along the semicircular groove on the circumference of the winding wheel 17 along with the rotation of the winding wheel 17, and the effect of pulling the cable 19 to move along the axis direction is achieved. In addition, the outer edge of the outer end face of the outer side of the winding wheel 17 is provided with a bolt for connecting a power spring 18. The winding wheel 17 can ensure that the inhaul cable 19 strictly moves along the axis direction of the inhaul cable when pulling the release bearing 21, and deflection does not occur, so that the inhaul cable 19 cannot interfere with an inner hole in the gear shaft; in addition, the winding wheel 17 can convert the small-size linear displacement motion of the pulling release bearing 21 into large-angle rotation of the winding wheel 17, which is equivalent to first-stage speed reduction, and the working condition of the driving motor 13 is improved.
Two ends of the power spring 18 are respectively hooked with the actuator housing and the rotating shaft 16. The function of the coil spring is set as follows: when the clutch 5 is changed from a separation state to a combination state, the elastic potential energy of the clutch diaphragm spring 7 is converted into mechanical energy, the boosting spring 18 is tensioned, the elastic force of the boosting spring 18 serves as resistance, and the mechanical energy is converted into elastic potential energy to be stored; when the clutch 5 changes from the engaged state to the disengaged state, work needs to be done against the resistance of the clutch diaphragm spring 7, the boosting spring 18 is released, the spring force is used as the driving force, i.e., boosting force, and the stored elastic potential energy is converted into mechanical energy, so that the demand on the driving force provided by the driving motor 13 is reduced. The use of the power spring 18 significantly reduces the requirements on the drive motor 13, reduces the motor's rated capacity and reduces the cost of the overall actuator.
As mentioned above, one end of the pulling cable 19 is fixed at the bolt hole on the circumference of the winding wheel 17 through the bolt, the other end passes through the middle hole of the gear shaft 2 and the central hole of the release bearing 21, and finally is fixed at the outer side of the end cover of the release bearing 21 through the adjusting nut 23, and the axial direction of the pulling cable 19 is tangent with the outer circumference of the winding wheel 17. This causes the spool 17 to rotate about its axis, which pulls the cable 19 and hence the release bearing 21 in the direction of its axis, thereby effecting the desired release or engagement of the clutch 5. In addition, the connecting end of the end cover of the pull cable 19 and the release bearing 21 is a section of long thread, and the working length of the pull cable 19 can be adjusted by screwing the adjusting nut 23.
Two ends of the shaft sleeve 20 are provided with two bearing seats, the bearing seats are respectively provided with a deep groove ball bearing, and the shaft sleeve 20 is rotatably connected to the gear shaft 2 through the deep groove ball bearings and is axially positioned through a shaft shoulder and a snap spring.
The inner race of the release bearing 21 is fitted over the outer circumferential surface of the sleeve 20 so that the release bearing 21 can move in the axial direction thereof. The sleeve 20 is provided to offset a difference in rotational speed between the release bearing 21 and the gear shaft 2 so that the release bearing 21 does not rotate at a high speed with the gear shaft 2. The release bearing 21 consists of a thrust bearing and an end cover, and the thrust bearing is used for eliminating the difference of the rotating speed between the diaphragm spring 7 of the clutch 5 and the release bearing 21; the middle of the end cover is provided with a through hole for the threaded section of the inhaul cable 19 to pass through, the end cover is connected with the threaded section of the inhaul cable 19 through an adjusting nut 23, and reinforcing ribs are arranged on the end cover to increase the strength. The use of the mating bushing 20 allows the axial movement of the cable 19 to correspondingly move the release bearing 21 linearly in the axial direction thereof. The movement of the release bearing 21 in the axial direction thereof presses or releases the release finger of the diaphragm spring 7 of the clutch 5, thereby achieving the release or engagement of the clutch 5.
As previously mentioned, bearing seats are provided on the actuator housing to provide the necessary support for the various components of the clutch control actuator. In addition, the housing can provide protection for the mechanical parts of the device to prevent the worm gear mechanism from being contaminated by dust and other impurities.
The angle sensor 22 is fixed on the actuator housing and is used for detecting real-time rotation angle signals of the rotating shaft 16 and the winding wheel 17 so as to judge the separation state of the clutch. The angle sensor 22 feeds back the rotation angle information to a gear shifting controller (TCU) in real time as a gear shifting control basis.
The gear shifting controller (TCU) is a device for sending a gear shifting instruction, receives an angle sensor signal, an accelerator pedal depth signal, a vehicle speed signal or a brake pedal depth signal and the like which are detected by a vehicle sensor, analyzes and processes each vehicle signal, makes a gear shifting decision, and controls the separation or combination of the clutch 5 by controlling the magnitude and the direction of the output torque of the driving motor 13 so as to realize a gear shifting control process; in addition, the gear shifting controller can also control the separation and combination speed of the clutch 5 by adjusting the acting torque of the driving motor 13 in real time so as to ensure the gear shifting quality.
Based on the structure of the control executing mechanism of the dragline clutch in the first embodiment, the invention also provides an executing method of the control executing mechanism of the dragline clutch, and the specific processes of the method are as follows:
1. the clutch separation executing process comprises the following steps:
as shown in fig. 3, the gear shift controller (TCU) receives vehicle state signals such as a turning angle signal, an accelerator pedal depth signal, a vehicle speed signal, and a brake pedal depth signal, which are detected and transmitted by the angle sensor 22, the accelerator pedal depth sensor, the vehicle speed sensor, and the brake pedal depth sensor, respectively, and makes a gear shift determination by analyzing, calculating, and processing the vehicle state signals as a determination basis, thereby sending a clutch disengagement instruction. If the clutch is separated, the inhaul cable 19 connected with the release bearing 21 needs to be shortened inwards, so that the TCU controls the driving motor 13 to rotate in the forward direction to start, the driving motor 13 drives the worm 14 to rotate in the forward direction, the worm 14 transmits power to the worm wheel 15 to drive the worm wheel 15 to rotate clockwise, then the worm wheel 15 drives the rotating shaft 16 to rotate clockwise, the winding wheel 17 rotates clockwise along with the rotating shaft 16 synchronously, the inhaul cable 19 is further pulled to be wound along the winding wheel 17, and the exposed end of the inhaul cable 19 is shortened inwards. At this time, the assist spring 18 is changed from a tensioned state to a free state, the elastic potential energy thereof is converted into mechanical energy, and the elastic restoring force of the assist spring 18 serves as an assist force for the inward elastic deformation of the diaphragm spring 7 to help the driving motor 13 to work against the elastic force of the diaphragm spring 7. The rotation of the reel 17 is converted into a linear motion of the release bearing 21 in the axial direction thereof by the cable 19. Meanwhile, the angle sensor 22 feeds back the rotation angle information of the rotating shaft 16 to the TCU in real time, thereby realizing closed-loop control.
In the process of executing the clutch separation, the pull cable 19 pulls the release bearing 21 to linearly move along the axis of the release bearing 21 in the direction close to the clutch 5 through the adjusting nut 23, so that the release bearing 21 is pressed into the separation finger of the inner ring of the diaphragm spring 7, the movement of the separation finger is transmitted through the lever, the pressure plate 8 of the outer ring of the diaphragm spring 7 moves in the direction away from the friction plate 9, the pressure plate 8 does not press the friction plate 9 any more, the torque is not transmitted between the pressure plate 8 and the friction plate 9, and the clutch 5 finishes the separation process. In the process, the TCU receives the detection signal of the angle sensor 22 in real time, monitors the change condition of the rotation angle of the rotating shaft 16 to calculate the movement speed of the release bearing 21, corrects the instantaneous movement speed of the release bearing 21 through controlling the output torque of the driving motor 13, further controls the sliding process time of the clutch 5 in the gear shifting process, and ensures better gear shifting quality and driving comfort. When the clutch 5 is disengaged, the following effects are obtained: the diaphragm spring 7, the clutch cover 6, the pressure plate 8, the flywheel plate 4 and the hollow sleeve shaft 3 synchronously rotate; the friction plates 9 rotate synchronously with the gear shaft 2, and a difference in rotational speed is allowed between the pressure plate 8 and the friction plates 9. At the moment, the transmission of the pure electric vehicle is in a first gear state. In addition, due to the self-locking property of the worm gear, the spring reaction force of the diaphragm spring 7 is borne by the worm gear mechanism, and the clutch 5 is reliably kept in a separated state, namely the transmission keeps a first gear working state.
2. The clutch combination execution process comprises the following steps:
as shown in fig. 4, the shift controller (TCU) receives vehicle state signals such as a turning angle signal, an accelerator pedal depth signal, a vehicle speed signal, and a brake pedal depth signal, which are detected and transmitted by the angle sensor 22, the accelerator pedal depth sensor, the vehicle speed sensor, and the brake pedal depth sensor, respectively, and makes a shift determination by analyzing, calculating, and processing the vehicle state signals as a determination basis, thereby sending a clutch engagement command. The TCU controls the reverse rotation of the driving motor 13, the driving motor 13 drives the worm 14 to rotate reversely, the worm 14 transmits power to the worm wheel 15 to drive the worm wheel 15 to rotate anticlockwise, then the worm wheel 15 drives the rotating shaft 16 to rotate anticlockwise, the winding wheel 17 is driven to rotate anticlockwise synchronously with the rotating shaft 16, the inhaul cable 19 is released along the winding wheel 17, and the exposed end of the inhaul cable 19 extends outwards under the pulling of the spring counter force of the diaphragm spring 7 of the clutch 5. At this time, the boosting spring 18 is changed from the free state to the tensioning state again, the mechanical energy of the boosting spring is converted into elastic potential energy to be stored, the elastic restoring force of the boosting spring 18 is used as the resistance of the outward elastic deformation of the diaphragm spring 7 to help the driving motor 13 to overcome the elastic force of the diaphragm spring 7 to do work, and the control performance of the clutch 5 in the combining process can be improved. The rotation of the reel 17 is converted into the linear motion of the release bearing 21 in the axial direction thereof by the cable 19. Meanwhile, the angle sensor 22 feeds back the rotation angle information of the rotating shaft 16 to the TCU in real time, thereby realizing closed-loop control.
During the clutch engagement execution, the spring reaction force of the diaphragm spring 7 pushes the release bearing 21 to move linearly along its axis in a direction away from the friction plate 9. The pressure plate 8 at the outer end of the diaphragm spring 7 moves towards the direction close to the friction plate 9, the pressure plate 8 compresses the friction plate 9 by the elastic force provided by the diaphragm spring 7, the torque can be transmitted between the pressure plate 8 and the friction plate 9, and the clutch finishes the combination process. In the process, the TCU receives a detection signal of the angle sensor 22 in real time, monitors a change of a rotation angle of the rotating shaft 16 to calculate a movement speed of the release bearing 21, and corrects an instantaneous movement speed of the release bearing 21 by controlling an output torque of the driving motor 13, so as to control a slip process time of the clutch 5 in a gear shifting process, thereby ensuring good gear shifting quality and driving comfort. When the clutch 5 is combined, the following effects are achieved: torque can be transmitted between the friction plate 9 and the pressure plate 8 and between the friction plate 9 and the flywheel plate 4, so that the friction plate 9 and the pressure plate 8 rotate synchronously, the whole clutch assembly, the gear shaft 2 and the hollow sleeve shaft 3 rotate synchronously, and the rotation speed difference is not allowed to exist. And at the moment, the pure electric vehicle transmission is in a second-gear state.
3. The automatic compensation process of the friction plate abrasion:
in the execution process of the stay cable type clutch control execution mechanism, the friction plate 9 becomes thinner gradually due to abrasion along with the increase of the vehicle driving mileage and the number of gear shifting. It can be known from the structural principle of the clutch that as the friction plate 9 becomes thinner, the separation finger of the inner ring of the diaphragm spring 7 is more convex than the initial position (i.e. farther away from the clutch), when the clutch is engaged, if the position of the release bearing 21 at the time of engaging the clutch 5 is still the position at the initial state, the pressing force between the pressure plate 8, the flywheel disk 4 and the friction plate 9 will be reduced, the friction plate 9 will slip between the pressure plate 8 and the flywheel disk 4, and the clutch 5 will not transmit torque reliably. To overcome the above problem, it is required to compensate for the wear of the friction plate 9, and the release bearing 21 is located farther from the friction plate 9 than the initial position when the clutch 5 is engaged. In this execution process, only need promptly with the winding wheel 17 with the cable 19 to outside release a distance to the direction of side release bearing 21 can, be about to winding wheel 17 anticlockwise rotation, make the cable 19 on winding wheel 17 the more initial position anticlockwise rotation certain angle can. The release bearing 21 can move towards the direction far away from the friction plate 9 under the action of the counterforce of the diaphragm spring 7, and the automatic compensation of the abrasion of the clutch friction plate 9 can be realized.
The second embodiment:
as shown in fig. 5, the present invention provides a control actuator of a dragline clutch, which is composed of a dragline actuating component and a dragline driving component; the cable executing assembly consists of a cable 19, a shaft sleeve 20, a release bearing 21 and an adjusting nut 23; the cable driving component is a cable manual driving component and consists of a pedal 27 and a guide wheel 28.
The middle part of the pedal 27 is hinged to the vehicle body through a hinge, and a hook is arranged at the top end of the pedal 27 and used for hooking the inhaul cable 19, so that the pedal 27 is fixedly connected with one end of the inhaul cable 19; the guide wheel 28 is arranged along the cable 19, and the cable 19 is tangent with the outer circumference of the guide wheel 28. When the driver steps on the pedal 27, the pedal 27 rotates around the hinge point at the middle part, the motion is transmitted through the lever structure, the hook at the top of the pedal 27 pulls or releases the cable 19, and the cable 19 moves linearly along the axial direction under the guiding action of the guide wheel 28.
As mentioned above, one end of the cable 19 is connected to the top end of the pedal 27, and the other end passes through the middle hole of the gear shaft 2 and the center hole of the release bearing 21, and finally is fastened and fixed outside the end cap of the release bearing 21 by the adjusting nut 23, and when the pedal 27 is stepped on, the cable 19 is pulled to move along the axis direction thereof, and then the release bearing 21 is driven to move along the axis direction thereof, so as to realize the required separation or combination action of the clutch 5. In addition, the connecting end of the end cover of the pull cable 19 and the release bearing 21 is a section of long thread, and the working length of the pull cable 19 can be adjusted by screwing the adjusting nut 23.
Two bearing seats are arranged at two ends of the shaft sleeve 20, a deep groove ball bearing is respectively arranged on each bearing seat, the shaft sleeve 20 is rotatably connected to the gear shaft 2 through the deep groove ball bearings, and axial positioning is carried out through shaft shoulders and snap springs.
The inner race of the release bearing 21 is fitted over the outer circumferential surface of the sleeve 20 so that the release bearing 21 can move in the axial direction thereof. The sleeve 20 is provided to offset a difference in rotational speed between the release bearing 21 and the gear shaft 2 so that the release bearing 21 does not rotate at a high speed with the gear shaft 2. The release bearing 21 consists of a thrust bearing and an end cover, and the thrust bearing is used for eliminating the rotation speed difference between the diaphragm spring 7 of the clutch 5 and the release bearing 21; the middle of the end cover is provided with a through hole for the threaded section of the inhaul cable 19 to pass through, the end cover is connected with the threaded section of the inhaul cable 19 through an adjusting nut 23, and reinforcing ribs are arranged on the end cover to increase the strength. The use of the mating bushing 20 allows the axial movement of the cable 19 to correspondingly move the release bearing 21 linearly in the axial direction thereof. The movement of the release bearing 21 in the axial direction thereof presses or releases the release finger of the diaphragm spring 7 of the clutch 5, thereby achieving the release or engagement of the clutch 5.
Based on the structure of the control executing mechanism of the dragline clutch in the first embodiment, the invention further provides an executing method of the control executing mechanism of the dragline clutch, and the method specifically comprises the following processes:
1. the clutch separation executing process comprises the following steps:
as shown in fig. 5, when the driver intends to disengage the clutch and depresses the pedal 27, the motion is transmitted through the pedal 27, and finally the cable 19 is pulled by the hook at the top end of the pedal 27, the cable 19 moves smoothly in the axial direction under the guiding action of the guide wheel 28, and the part of the cable 19 in the gear shaft 2 is always parallel to the gear shaft 2; the inhaul cable 19 pulls the release bearing 21 to move towards the direction close to the clutch along the axis direction through the adjusting nut 23, the release finger of the inner ring of the diaphragm spring 7 is pressed in, the movement of the release finger is transmitted through the lever, so that the pressure plate 8 of the outer ring of the diaphragm spring 7 moves towards the direction far away from the friction plate 9, the pressure between the pressure plate 8 and the friction plate 9 is reduced, the friction plate 9 is not pressed, the torque is not transmitted between the pressure plate 8 and the friction plate 9, and the clutch 5 finishes the release process.
2. The clutch combination execution process comprises the following steps:
as shown in fig. 6, when the driver makes an intention of the clutch engagement and gradually releases the pedal 27, the cable 19 is released; the spring counterforce of the diaphragm spring 7 pushes the release bearing 21 to move along the axis in the direction far away from the friction plate 9, so that the pressure plate 8 at the outer end of the diaphragm spring 7 moves in the direction close to the friction plate 9, the pressure plate 8 compresses the friction plate 9 by the elastic force provided by the diaphragm spring 7, the torque is transmitted between the pressure plate 8 and the friction plate 9, and the clutch finishes the combination process.
Claims (5)
1. An execution method of a control execution mechanism of a guy cable type clutch is characterized in that the control execution mechanism is matched and connected with a shaft system structure of a pure electric vehicle gearbox and consists of a guy cable execution assembly and a guy cable driving assembly;
the cable executing assembly consists of a cable (19), a shaft sleeve (20) and a release bearing (21), wherein one end of the cable (19) is connected with the driving tail end of the cable driving assembly, the other end of the cable passes through a central hole of a gear shaft (2) provided with a clutch (5), the release bearing (21) is coaxially arranged on the outer side of the clutch (5), and the tail end of the cable (19) passes through the release bearing and is fixed on the outer side of the release bearing (21); the shaft sleeve (20) is mounted on the gear shaft (2) through a bearing and is axially positioned through a shaft shoulder and a clamp spring, an inner ring of the release bearing (21) is sleeved on the shaft sleeve (20), the gear shaft (2) freely rotates relative to the release bearing (21), and the release bearing (21) only linearly moves along the axial direction under the driving of the inhaul cable driving assembly;
the cable driving assembly is an automatic cable driving assembly and consists of a driving motor (13), a worm (14), a worm wheel (15), a rotating shaft (16), a winding wheel (17), a power-assisted spring (18), a vehicle state sensor and a gear-shifting controller;
the driving motor (13) is fixed on the gearbox shell (1) through a driving motor bracket (12); the worm (14) is coaxially connected with the driving motor (13) and meshed with the worm wheel (15), the worm wheel (15) is fixedly arranged at one end of the rotating shaft (16), and the winding wheel (17) is fixedly arranged at the other end of the rotating shaft (16); the power-assisted spring (18) is sleeved on the rotating shaft (16), one end of the power-assisted spring is connected to the winding wheel (17) and rotates along with the winding wheel (17), and the other end of the power-assisted spring is relatively fixed; an annular groove is formed in the outer circumferential surface of the winding wheel (17), one end of the inhaul cable (19) is fixed on the winding wheel (17) and is wound in the annular groove along the circumferential direction of the winding wheel (17), and the inhaul cable (19) is guaranteed to be axially linear when wound or released;
the signal input end of the gear shifting controller is connected with the vehicle state sensor, the signal output end of the gear shifting controller is connected with the driving motor (13), the gear shifting controller processes the vehicle state signal and sends a control instruction to the driving motor (13), and then the driving motor (13) is controlled to drive the inhaul cable execution assembly to move, so that the separation or combination of the clutch is realized;
the method is characterized in that: the method comprises a clutch separation execution method and a clutch combination execution method;
the clutch separation execution method comprises the following steps: the gear-shifting controller processes vehicle state signals detected and sent by a vehicle state sensor and then makes gear-shifting judgment and sends a clutch separation instruction, at the moment, the gear-shifting controller controls a driving motor (13) to rotate forward and sequentially drives a worm (14), a worm wheel (15), a rotating shaft (16) and a winding wheel (17) to rotate forward, a stay cable (19) is wound along the winding wheel (17), an assistance spring (18) is changed from a tensioning state to a free state, the elastic restoring force of the assistance spring is used as assistance for inward elastic deformation of a diaphragm spring (7) to help the driving motor (13) to overcome the elastic force of the diaphragm spring (7) to do work, the winding wheel (17) rotates to pull the stay cable (19), and then pulls a separation bearing (21) to move linearly towards a clutch (5) along the axis of the separation bearing, so that the separation bearing (21) presses a separation finger of an inner ring of the diaphragm spring (7), so that a separation disc (8) of an outer ring of the diaphragm spring (7) moves towards a direction far away from the friction disc (9), no torque is transmitted between the pressure disc (8) and the friction disc (9), and the clutch (5) completes a separation process;
the clutch combination execution method comprises the following steps: the gear shifting controller processes vehicle state signals detected and sent by a vehicle state sensor to make gear shifting judgment and send a clutch combination instruction, at the moment, the gear shifting controller controls a driving motor (13) to rotate reversely and sequentially drives a worm (14), a worm wheel (15), a rotating shaft (16) and a winding wheel (17) to rotate reversely, a pull rope (19) is released along the winding wheel (17), an assisting spring (18) is changed into a tensioning state from a free state, the elastic restoring force of the assisting spring is used as the resistance of inward elastic deformation of a diaphragm spring (7) to help the driving motor (13) to overcome the elastic force of the diaphragm spring (7) to do work, the winding wheel (17) rotates to release the pull rope (19), under the pushing of the elastic force of the diaphragm spring (7), a release bearing (21) moves linearly along the axis far away from a clutch (5), a pressure plate (8) at the outer end of the diaphragm spring (7) moves towards the direction close to a friction plate (9), the pressure plate (8) and the friction plate (9) are pressed and transmit torque, and the clutch completes the combination process;
the method also comprises an automatic friction plate wear compensation method in the clutch closing process, wherein the automatic friction plate wear compensation method comprises the following steps: according to the actual wear degree of the friction plate (9), under the control of a gear shifting controller, a driving motor (13) rotates reversely to drive a winding wheel (17) to rotate anticlockwise for a certain angle, namely, a cable (19) is released for a certain distance in the direction of a release bearing (21), so that the end point position of the cable (19) on the winding wheel (17) rotates anticlockwise for a certain angle compared with the initial position, the release bearing (21) moves towards the direction far away from the friction plate (9) under the action of the counter force of a diaphragm spring (7), and the automatic compensation of the wear of the clutch friction plate (9) can be realized.
2. The method of claim 1, wherein the method comprises:
an external thread is processed at one end of the pull cable (19) connected with the release bearing (21), and the pull cable (19) is in threaded connection with the adjusting nut (23) to realize the adjustment and fixation of the relative position of the pull cable and the release bearing (21).
3. The method of claim 1, wherein the method comprises:
d shape hole has all been opened at the center of worm wheel (15) and serving wheel (17), and the shaft part cross-section that pivot (16) and worm wheel (15) and serving wheel (17) link to each other is the D shape rather than assorted, and it is spacing that pivot (16) carry out the circumferencial direction through D shape shaft part is connected with worm wheel (15) and serving wheel (17) respectively, and it is spacing that pivot (16) carry out the axial through shoulder and jump ring be connected with worm wheel (15) and serving wheel (17) respectively, and then realizes worm wheel (15), transmit the moment of torsion reliably between pivot (16) and serving wheel (17).
4. The method of claim 1, wherein the method comprises:
the vehicle state sensor consists of an angle sensor (22) for detecting the rotating angle of the rotating shaft (16), an accelerator pedal depth sensor, a vehicle speed sensor and a brake pedal depth sensor;
the angle sensor (22) is located at the shaft end of the rotating shaft (16), the shape of the shaft end of the rotating shaft (16) is matched with the rotor connecting groove of the angle sensor (22), and the rotating shaft (16) drives the rotor of the angle sensor (22) to rotate synchronously so as to detect and obtain the real-time rotating angle of the rotating shaft (16).
5. The method of claim 1, wherein the method comprises:
in the process of executing the clutch separation and executing the clutch combination, the gear shifting controller judges the position of the release bearing and the corresponding clutch connection state by receiving a rotation angle signal of the rotating shaft (16) in real time, calculates the movement speed of the release bearing (21), corrects the instantaneous movement speed of the release bearing (21) by controlling the output torque of the driving motor (13), further controls the time of the slipping process of the clutch (5), and ensures the gear shifting quality and the driving comfort of the gearbox.
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| CN115143366B (en) * | 2022-07-27 | 2024-06-07 | 重庆几维科技有限公司 | Security protection equipment for intelligent building |
| CN116767360B (en) * | 2023-08-15 | 2024-04-12 | 上海恩井汽车科技有限公司 | Actuator device, spoiler system and automobile |
| CN117260793B (en) * | 2023-11-22 | 2024-02-02 | 北京曾益慧创科技有限公司 | A fixed manipulator for computer spare part processing |
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| CN2823662Y (en) * | 2005-08-16 | 2006-10-04 | 比亚迪股份有限公司 | Clutch control servo-mechanism for mechanical automatic speed variator |
| JP2007225072A (en) * | 2006-02-27 | 2007-09-06 | Hitachi Ltd | Control device for automobile |
| CN101493123B (en) * | 2008-01-23 | 2012-06-06 | 哈尔滨理工大学 | Automatic clutch driving mechanism for car based on helicoid spring compensation |
| FR2928983B1 (en) * | 2008-03-19 | 2010-06-18 | Skf Ab | AUTOCENTRATING CLUTCHING STOP DEVICE. |
| CN101508242A (en) * | 2009-03-13 | 2009-08-19 | 同济大学 | Electric controlled operation device of diaphragm spring clutch for vehicle |
| CN201953857U (en) * | 2011-03-18 | 2011-08-31 | 刘建 | Automatic clutch control mechanism |
| CN103277424B (en) * | 2013-06-28 | 2015-11-18 | 重庆长安汽车股份有限公司 | A kind of automobile clutch release system |
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