CN111750012A

CN111750012A - Clutch friction plate wear detection mechanism

Info

Publication number: CN111750012A
Application number: CN202010510669.0A
Authority: CN
Inventors: 熊正怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-10-09

Abstract

The invention relates to the technical field of intelligent automobiles, and discloses a clutch friction plate abrasion detection mechanism which comprises a clutch, wherein a driven plate is arranged in the clutch, monitoring plates are fixedly arranged on two sides of the driven plate, and friction plates are fixedly arranged on one sides of the monitoring plates far away from the driven plate. So as to replace the friction plate in time.

Description

Clutch friction plate wear detection mechanism

Technical Field

The invention relates to the technical field of intelligent automobiles, in particular to a clutch friction plate abrasion detection mechanism.

Background

Clutches, as the name implies, are intended to transfer appropriate amounts of power by means of "on" and "off". The clutch is located between the engine and the speed variator and is a transmission mechanism which can transmit power and cut off power. The main function is to ensure the automobile to start smoothly, reduce the impact load of the speed change gear and prevent the transmission system from overloading when changing speed and shifting gears. The clutch can be divided into a friction clutch, a hydraulic torque converter (hydraulic coupler), an electromagnetic clutch and the like. The working process of the friction clutch is as follows: the torque generated by the engine is transmitted to the driven plate through the friction action of the flywheel, the pressure plate and the friction plate of the driven plate. When the driver steps on the clutch pedal, the large end of the diaphragm spring drives the pressure disc to move backwards through the transmission of the machine parts, and at the moment, the driven part is separated from the driving part. The friction disc is through the friction drive with flywheel and pressure disk, wearing and tearing can appear, when wearing and tearing to the certain extent, the friction disc surface is smooth state, therefore the friction disc joint of flywheel and driven plate is not inseparable, friction torque between the two is relatively little, the two can not synchronous rotation, the clutch is in the state of skidding promptly, mistake when meeting emergency, the clutch disc skids and can lead to the automobile not to be labored with higher speed, dynamic nature descends, the clutch separation is not thorough, the clutch is trembled, there is the sound, the footboard sensation is soft, and clutch work is lost, the footboard is heavy.

The existing detection modes are generally two types: firstly, the method comprises the following steps: checking the vehicle, tightening a hand brake and starting the vehicle at the first gear without adding a throttle; if the automobile is shut down, the friction plate is intact, if the automobile can be started just barely, the friction plate slightly slips, and if the automobile is not shut down after the clutch is released, the friction plate already slips. II, secondly: the utility model can be taken down for examination and is clear at a glance,

the existing mode is also the experience feeling of a driver during driving, and the abrasion degree of the friction plate can be clearly found out unless the clutch is disassembled. The friction plate manufacturer generally stipulates that the automobile needs to be replaced when the automobile runs for 6 kilometers, but the driving habits of each driver are different, such as: put the foot on clutch pedal for a long time, partly step on the separation and reunion for a long time and the separation and reunion does not step on to the end and just shifts the bad news such as will influence the damage degree of friction disc, this just causes car to go to the hundred thousand kilometers and just needs to change a bit, car goes to just need to change a bit when five ten thousand kilometers, lack a monitoring mechanism and make the driver can clearly audio-visual degree of wear of looking over the car friction disc, so that in time carry out the change of friction disc, in order to prevent to miss when meeting emergency and affairs, potential safety hazard when reducing the car simultaneously and going.

Disclosure of Invention

Aiming at the defects of the existing friction plate in the use process in the background technology, the invention provides the clutch friction plate wear detection mechanism which has the advantage that a driver can clearly and visually check the wear degree of the automobile friction plate, and the problems in the background technology are solved.

The invention provides the following technical scheme: a clutch friction plate abrasion detection mechanism comprises a clutch, wherein a driven plate is arranged inside the clutch, monitoring plates are fixedly arranged on two sides of the driven plate, friction plates are fixedly arranged on one sides, away from the driven plate, of the monitoring plates, flow speed holes are formed in one sides of the friction plates, a speed measuring groove is formed in one side, located in the flow speed holes, of the monitoring plates, the flow speed holes are communicated with the inside of the speed measuring groove, a rotating shaft is rotatably connected to the inside of the speed measuring groove, fan blades are fixedly arranged on the outer sides of the rotating shaft, a current cavity is embedded in one side, located in the speed measuring groove, of the monitoring plates, a permanent magnet is fixedly arranged in the current cavity, one end, away from the flow speed holes, of the rotating shaft extends to the inside of the current cavity and is fixedly provided with a conductor, one end of the conductor extends to the inside of the permanent magnet, and heat exchange cavities, the inside fixed mounting of heat transfer chamber has the magnet, the outside cover of magnet has circular telegram coil.

Preferably, the output end of the conductor is electrically connected with the input end of the electrified coil.

Preferably, the flow velocity holes are conical in shape, and the inclination of a generatrix is 30-45 degrees.

The invention has the following beneficial effects:

1. the automobile friction plate cutting device is provided with the flow rate hole, the rotating shaft, the permanent magnet and the conductor, the inner diameter of the flow rate hole is gradually enlarged along with the abrasion degree of the friction plate, the cold air flow rate in the speed measuring groove is reduced along with the enlargement of the inner diameter of the flow rate hole, and the rotating speed of the rotating shaft is reduced due to the reduction of the cold air flow rate, so that the motion speed of the conductor for cutting the magnetic induction line by rotating in the permanent magnet is reduced, the current generated in a closed circuit is reduced, the current generated in the closed circuit is larger when the friction plate is not abraded, the current difference between the current and the current is obtained through the data processing module, the abrasion degree of the friction plate can be obtained, a driver can clearly and visually check the abrasion degree of the automobile friction plate, the friction plate can be timely replaced, the error in case.

2. The invention inputs the current generated in the closed circuit into the input end of the electrified coil by arranging the magnet and the electrified coil, according to the principle of adiabatic demagnetization, as the abrasion degree of the friction plate is deepened, the current input into the input end of the electrified coil is gradually reduced, so that the magnetic field generated by the electrified coil is gradually reduced, the magnetic moment direction of the magnet is changed into disorder, so that the magnet absorbs the heat inside the speed measuring groove, the temperature inside the speed measuring groove is reduced, the temperature difference between the inside of the speed measuring groove and the outside of the friction plate is kept in a constant range, thereby solving the problems that the surface is gradually smooth when the friction plate is worn, the temperature generated by friction is reduced, the temperature difference between the inner temperature of the speed measuring groove and the outer temperature of the friction plate is reduced, thereby cause the influence to the outflow speed of the interior cold air of test speed groove, and then influence the precision problem that the friction disc degree of wear detected.

Drawings

FIG. 1 is a schematic view of the present invention in position within a clutch;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a sectional view showing the internal structure of the present invention;

fig. 4 is a block diagram of current detection according to the present invention.

In the figure: 1. a clutch; 2. a driven plate; 3. a monitoring disc; 4. a friction plate; 5. a flow rate orifice; 6. a speed measuring groove; 7. a rotating shaft; 8. a fan blade; 9. a current chamber; 10. a permanent magnet; 11. a conductor; 12. a heat exchange cavity; 13. a magnet; 14. and (6) energizing the coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a clutch friction plate wear detection mechanism includes a clutch 1, a driven plate 2 is disposed inside the clutch 1, monitoring plates 3 are fixedly mounted on both sides of the driven plate 2, friction plates 4 are fixedly mounted on one sides of the monitoring plates 3 away from the driven plate 2, a flow velocity hole 5 is formed in one side of each friction plate 4, a velocity measurement groove 6 is formed in one side of the inside of each monitoring plate 3 and located at the flow velocity hole 5, the flow velocity hole 5 is communicated with the inside of the velocity measurement groove 6, a rotation shaft 7 is rotatably connected inside the velocity measurement groove 6, fan blades 8 are fixedly mounted on the outer sides of the rotation shaft 7, a current cavity 9 is embedded in one side of the inside of each monitoring plate 3 and located at the velocity measurement groove 6, a permanent magnet 10 is fixedly mounted inside the current cavity 9, one end of the rotation shaft 7 away from the flow velocity hole 5 extends to the inside of the current cavity 9 and, the monitoring disc 3 is provided with heat exchange cavities 12 at the upper and lower ends of the current cavity 9, the heat exchange cavities 12 are fixedly provided with magnets 13 inside, the outside of the magnets 13 is sleeved with an electrified coil 14, the inner diameter of the flow velocity hole 5 can be gradually enlarged along with the abrasion degree of the friction plate 4, the cold air flow velocity inside the speed measuring groove 6 is reduced along with the enlargement of the inner diameter of the flow velocity hole 5, and simultaneously the cold air flow velocity is reduced to reduce the rotating speed of the rotating shaft 7, so that the conductor 11 cuts the inner part of the permanent magnet 10 to reduce the movement speed of the magnetic induction wire, thereby reducing the current generated in the closed circuit, when the friction plate 4 is not abraded, the current generated in the closed circuit is larger, thereby obtaining the current difference between the current difference and the friction plate 4, when the current difference reaches a preset value, the abrasion degree of the friction plate 4 can be obtained, and the calculation method between the current difference, the current detection module is used for detecting the magnitude of induced current and transmitting the detected current value to the data processing module, the magnitude of the detected induced current can be detected by connecting the current sensor in series in a closed loop, and then the data processing module is used for calculating and comparing a data difference value (the data processing module calculates the difference value between the current value acquired in real time and a preset initial value, defines a real-time deviation rate and compares the real-time deviation rate with the preset deviation rate, and if the deviation precision is reached, the current value is transmitted to the instrument display), and a driver can check the abrasion degree of the friction plate 4 through the instrument display.

Wherein, the output end of the conductor 11 is electrically connected with the input end of the electric coil 14, if the temperature difference between the outer side of the friction plate 4 and the inner side of the speed measuring groove 6 changes, the air outflow speed in the speed measuring groove 6 can be influenced, the current generated in the closed circuit is input into the input end of the electric coil 14 by utilizing the principle of adiabatic demagnetization through the magnet 13 and the electric coil 14, the current input into the input end of the electric coil 14 is gradually reduced along with the deepening of the abrasion degree of the friction plate 4, so that the magnetic field generated by the electric coil 14 is gradually reduced, the magnetic moment direction of the magnet 13 is disordered, the heat in the speed measuring groove 6 is absorbed by the magnet 13, the temperature in the speed measuring groove 6 is reduced, meanwhile, the temperature difference between the inner side of the speed measuring groove 6 and the outer side of the friction plate 4 is kept in a constant range, and the temperature difference between the inner side of the speed measuring, meanwhile, the outflow speed of the cold air is not influenced, so that the current generated in the closed circuit is not influenced.

Wherein, the shape of velocity of flow hole 5 is the toper, and generating line gradient 30 ~ 45, and velocity of flow hole 5 internal diameter can be along with the degree of wear of friction disc 4 progressively enlarges, makes the difference of cold air outflow rate more obvious simultaneously to make the current difference that produces more obvious in the closed circuit, make the detection precision of friction disc 4 more accurate.

The using method of the invention is as follows: when the friction plate 4 is in friction transmission with the flywheel and the pressure plate, heat is generated, so that hot air is generated by heating the air on one side of the friction plate 4, meanwhile, the air in the speed measuring groove 6 is lower in temperature than the air on the outer side of the friction plate 4, so that the air in the speed measuring groove 6 is cold air relative to the air on the outer side of the friction plate 4, the hot air rises due to the fact that the air is heated and expands, the cold air in the speed measuring groove 6 supplements the hot air rising on the outer side of the friction plate 4 from the inside of the speed measuring groove 6 through the flow rate hole 5, when the friction plate 4 is not worn, the inner diameter of the end, far away from the speed measuring groove 6, of the flow rate hole 5 for flowing the cold air in the speed measuring groove 6 is smaller, the flow rate of the cold air flowing out of the flow rate hole 5 is higher, the rotating speed of the rotating shaft 7 is higher by driving the, when the friction plate 4 is abraded, the inner diameter of one end of the flow velocity hole 5 far away from the speed measuring groove 6 is gradually enlarged, so that the flow velocity of cold air flowing out of the flow velocity hole 5 in the speed measuring groove 6 is gradually reduced, the rotating speed of the rotating shaft 7 is driven to be slower by the fan blade 8 when the cold air flows out, meanwhile, the rotating shaft 7 rotates to drive the conductor 11 to rotate in the permanent magnet 10 to cut the magnetic induction line, so that the induced current generated by the closed circuit is reduced, the data processing module detects the current generated in the closed circuit, the data processing module calculates the difference value between the current value acquired in real time and the preset initial value, defines the real-time deviation rate, compares the real-time deviation rate with the preset deviation rate, if the deviation precision is reached, the real-time deviation rate is transmitted to an instrument display, a driver can conveniently check the current, and the friction surface of, when the friction transmission is carried out between the friction plate 4 and the flywheel and the pressure plate, the generated heat is reduced, the air temperature outside the friction plate 4 is reduced, the temperature difference value between the air temperature outside the friction plate 4 and the air temperature inside the speed measuring groove 6 is reduced, the speed of cold air inside the speed measuring groove 6 filling the outside of the friction plate 4 is reduced, the induced current generated by a closed circuit when a rotating shaft 7 rotates to drive a conductor 11 to rotate inside a permanent magnet 10 to cut a magnetic induction line is influenced, the potential difference generated in the closed circuit is influenced, the accuracy of the abrasion value of the friction plate 4 is influenced, the current generated in the closed circuit is input into the input end of the electrified coil 14, the current input into the input end of the electrified coil 14 is gradually reduced along with the increase of the abrasion degree of the friction plate 4, and the magnetic field generated by the electrified coil 14 is gradually reduced, make 13 magnetic moment directions of magnet become disorderly, thereby make 13 magnets absorb the heat that tests the speed groove 6 inside, make the temperature that tests the speed groove 6 inside step down, thereby make the temperature in the 4 outsides of friction disc and the temperature that tests the speed groove 6 inside keep the temperature difference in the constant range always, make the temperature in the 4 outsides of friction disc and the temperature difference that tests the speed groove 6 inside can not influence conductor 11 and cut the induced current size that closed circuit produced when the linear motion is felt to permanent magnet 10 inside rotation, thereby the accuracy of detecting 4 degrees of wear of friction disc has been improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a clutch friction disc wearing and tearing detection mechanism, includes clutch (1), its characterized in that: clutch (1) inside is provided with driven plate (2), the equal fixed mounting in both sides of driven plate (2) has monitoring dish (3), the equal fixed mounting in one side of driven plate (2) has friction disc (4) is kept away from in monitoring dish (3), velocity of flow hole (5) have been seted up to one side of friction disc (4), the inside of monitoring dish (3) and the one side that is located velocity of flow hole (5) have been seted up and have been tested speed groove (6), velocity of flow hole (5) and the inside intercommunication in velocity of flow groove (6), it is connected with axis of rotation (7) to test speed groove (6) internal rotation, the outside fixed mounting of axis of rotation (7) has flabellum (8), monitoring dish (3) inside and be located one side of testing speed groove (6) and inlay and have current chamber (9), current chamber (9) inside fixed mounting has permanent magnet (10), the one end that velocity of flow hole (5) was kept away from in axis of rotation (7) extends to current chamber (9) inside and the one end of conductor (11) extends to inside permanent magnet (10), heat transfer chamber (12) have all been seted up to the upper and lower end that monitoring dish (3) are inside and lie in current cavity (9), the inside fixed mounting of heat transfer chamber (12) has magnet (13), the outside cover of magnet (13) has circular telegram coil (14).

2. A clutch plate wear detection mechanism as claimed in claim 1, wherein: the output end of the conductor (11) is electrically connected with the input end of the electrified coil (14).

3. A clutch plate wear detection mechanism as claimed in claim 1, wherein: the flow velocity holes (5) are conical in shape, and the inclination of a bus is 30-45 degrees.