Clutch assembly detection device and detection method

Abstract

The invention discloses a clutch assembly detection device and a detection method, which specifically relate to the technical field of detection equipment, including an equipment main body, the equipment main body including a fixed seat and a display screen, a torque measuring part, a distance measuring part and a pressure measuring part, the torque measuring part including a torque sensor, a coupling is fixedly connected to the torque sensor, a rotating shaft is fixedly connected to the fixed seat, the distance measuring part includes an annular plate, a plurality of connecting rods are arranged in the annular plate, the distance measuring part includes a pushing frame, a baffle is arranged on the pushing frame, a support plate is arranged on the right side of the annular plate, a laser rangefinder is arranged at the left end of the support plate, the pressure measuring part includes a release bearing, and a pressure sensor is arranged at the left end of the release bearing. The invention can directly measure the free stroke and release stroke data of the clutch assembly, simplify the measurement method, improve the detection accuracy and detection efficiency, and can measure the output torque of the motor under different loads according to the displacement data change.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and more specifically, to a clutch assembly detection device and a detection method. Background Art

[0002] The clutch assembly is a key component in the automobile transmission system. It is mainly composed of a clutch pressure plate, clutch plate, diaphragm spring, clutch cover, release bearing, return spring, clutch pedal and operating mechanism. The main function of the clutch assembly is to ensure the smooth start of the car and enable the driver to control the power transmission between the engine and the gearbox. The clutch assembly plays a vital role in the power transmission process of the car. In order to eliminate the adverse effects caused by the manufacturing and assembly accuracy errors of components, it is necessary to perform performance testing on the clutch assembly.

[0003] For example, a Chinese patent document with application number CN202322802007.2 discloses a direct-push release mechanism assembly accuracy detection tool, including a positioning plate and a positioning rod; the positioning plate is square and fixed to the clutch housing on the suspended side of the release fork; the positioning rod passes through the positioning plate from the outside of the positioning plate, and one end of the positioning rod is against the suspended side of the release fork. The invention fixes the suspended side of the release fork through the cooperation of the positioning rod and the positioning plate, and the distance between the front end face of the release bearing and the front end of a shaft cover can be measured by a vernier caliper to obtain the backup stroke of the release bearing; the problem of inconvenience in measuring the backup stroke of the release bearing can be effectively solved.

[0004] However, the invention needs to use a vernier caliper and a positioning plate to measure the free stroke of the clutch assembly during the measurement process. Multiple measurements are difficult to ensure the consistency of the measurement method, which will inevitably lead to deviations in the detection results. Moreover, the free stroke of the clutch assembly is only measured singly. The assembly accuracy of the clutch assembly is not only reflected in the free stroke. Due to the high internal assembly accuracy of the clutch assembly, it is difficult to intuitively measure the separation stroke of the internal clutch pressure plate with the help of measuring tools. The separation stroke of the clutch assembly is also an important parameter reflecting the performance of the clutch. Moreover, the load during the operation of the clutch assembly will change in real time according to the clutch state inside the clutch assembly. The torque of the clutch assembly in no-load, semi-clutch and fully loaded states is different, and the torque will change according to the separation or engagement process of the clutch assembly. This is also an important parameter indicator for measuring the clutch assembly. The performance parameters of the clutch assembly detected by the invention have certain limitations. For this reason, the present invention proposes a clutch assembly detection device and a detection method to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a clutch assembly detection device and a detection method to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a clutch assembly detection device, comprising a device body, the device body comprising a fixing seat for fixing the clutch assembly and a display screen for displaying sensor data, and further comprising:

[0007] A torque measuring unit, wherein the torque measuring unit comprises a torque sensor, the torque sensor is electrically connected to the display screen, the two output ends of the torque sensor are respectively fixedly connected to left and right axial couplings, a rotating shaft is slidably connected in the coupling away from the motor side, the rotating shaft is rotatably connected to the device body via a support seat, and the right end of the rotating shaft is coaxially fixedly connected to the left end of the fixing seat;

[0008] A distance measuring part, the distance measuring part comprises an annular plate, a plurality of connecting rods are arranged in the annular plate, and one end of the plurality of connecting rods facing the center of the annular plate can be inserted into the groove of the clutch pressure plate, the distance measuring part comprises a pushing frame located above the device body and capable of moving left and right, the pushing frame is provided with an annular baffle, a support plate fixedly connected to the device body is arranged on the right side of the annular plate, two laser rangefinders are arranged at the left end of the support plate, and the laser rangefinders are electrically connected to the display screen;

[0009] The pressure measuring part comprises a separation bearing fixedly connected to the left end pushing frame, a pressure sensor is arranged at the left end of the separation bearing, and the pressure sensor is electrically connected to the display screen.

[0010] Preferably, two support frames are fixedly connected to the device body, the torque sensor is fixedly connected to the front and rear support frames, a key slot is provided on the coupling, the rotating shaft is slidably connected to the key slot, a motor bracket is fixedly connected to the left end of the device body, a motor is provided on the motor bracket, and the output end of the motor is slidably connected to the coupling close to the motor side via a spline.

[0011] Preferably, the fixing seat is provided with a plurality of screw holes extending left and right, and the fixing seat can be detachably connected to the clutch assembly through fastening bolts and screw holes. The fixing seat is provided with an annular rotating groove with an opening facing right, and a rotating block is rotatably connected in the rotating groove.

[0012] Preferably, the laser rangefinder on the side far from the cylinder corresponds to the annular plate, and the laser rangefinder on the side far from the cylinder can measure the displacement change of the annular plate in real time; the laser rangefinder on the side close to the cylinder corresponds to the baffle, and the laser rangefinder on the side close to the cylinder can measure the displacement change of the baffle in real time.

[0013] Preferably, the rotating block is provided with a plurality of guide grooves which are evenly distributed in the circumferential direction and open to the right, the distance between the guide grooves and the center of the rotating block decreases in the clockwise direction, the guide grooves are slidably connected with left and right axial guide cylinders, the guide cylinders are slidably connected with connecting shafts, and the left end of the connecting shaft is connected to the left side wall of the guide cylinder via a first spring.

[0014] Preferably, the annular plate is provided with a plurality of sliding grooves, and the fixed seat is fixedly connected with a plurality of sliding blocks corresponding to the sliding grooves one by one, and the annular plate is slidably connected with the fixed seat via the sliding grooves and the sliding blocks, and the annular plate is provided with a sliding groove with an opening toward the center of the annular plate, and the annular plate is provided with a plurality of connecting grooves with openings facing left, and the right end of the connecting groove is connected with the guide groove on the corresponding side, the connecting rod is slidably connected with the sliding groove, and the right end of the connecting shaft extends into the connecting groove on the corresponding side and is fixedly connected with the connecting rod.

[0015] Preferably, the fixed seat is provided with an arc groove with an opening facing left and connected with the rotating groove, and the left end surface of the fixed seat is provided with two clamping grooves connected with the arc groove. The left end of the rotating block is fixedly connected with a pull rod located in the arc groove, and the pull rod is provided with a movable groove with an opening facing downward. A clamping block that can be inserted into the clamping groove is slidably connected in the movable groove, and the upper end of the clamping block is connected to the side wall of the movable groove via a second spring.

[0016] Preferably, the upper end of the equipment body is fixedly connected to a fixing rod located on the left side of the support plate, and the fixing rod is rotatably connected to an output shaft coaxial with the fixing seat. The left end of the output shaft is gear-shaped and can engage with the driven plate in the clutch assembly.

[0017] Preferably, a cylinder located below the laser rangefinder is provided at the left end of the support plate, a U-shaped plate is fixedly connected to the left end of the cylinder, and the left end of the U-shaped plate is detachably connected to the push frame via connecting bolts.

[0018] A detection method for a clutch assembly detection device comprises the following steps:

[0019] S1. Fix the clutch assembly and the fixing seat with the fastening bolts, insert the left end of the output shaft into the tooth groove of the driven plate in the clutch assembly, and make the left end of the output shaft mesh with the driven plate;

[0020] S2. Turn on the motor, the motor drives the shaft to rotate via the coupling and the torque sensor, the shaft drives the fixed seat and the clutch assembly to rotate, and the flywheel in the clutch assembly drives the driven plate and the output shaft to rotate via the clutch plate;

[0021] S3, turning on the cylinder, display screen, laser rangefinder, pressure sensor and torque sensor, the cylinder moves to the left, the cylinder drives the release bearing and the pressure sensor to move to the left through the U-shaped plate and the push frame, the laser rangefinder measures the displacement change of the annular plate and the baffle, the torque sensor measures the real-time output torque of the motor and displays it on the display screen;

[0022] S4. Move the cylinder to the right to its initial position, then turn off the cylinder and the motor, analyze and record the data measured on the display.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention drives the push frame and the baffle to move by the cylinder, so that the laser rangefinder close to one side of the cylinder measures the displacement change of the baffle. When the force measured by the pressure sensor changes from zero, the displacement change of the baffle at this time can be obtained on the display screen. At this time, the displacement change of the baffle is the free stroke of the clutch assembly, which avoids the measurement error caused by the difference in the technique of using a vernier caliper, simplifies the measurement steps of the free stroke, and improves the detection accuracy.

[0025] 2. The present invention realizes sliding connection between the annular plate and the fixing seat through the matching arrangement of the fixing seat and the annular plate. At the same time, a plurality of connecting rods in the annular plate can be fixed to the clutch pressure plate, so that the clutch pressure plate stroke inside the clutch assembly is mapped to the annular plate in real time. The displacement change of the annular plate is measured using a laser rangefinder far away from the cylinder side. The displacement change of the annular plate is equal to the displacement change of the clutch pressure plate, thereby measuring the separation stroke of the clutch assembly. The non-intuitive motion trajectory inside the clutch assembly is presented through the external annular plate, thereby optimizing the detection method of the separation stroke of the clutch assembly.

[0026] 3. The present invention measures the real-time output torque of the motor after loading through a torque sensor. The right end of the rotating shaft is fixedly connected to the clutch assembly through a fixed seat. The cylinder drives the release bearing and the pressure sensor to squeeze the diaphragm spring, causing the diaphragm spring to undergo elastic deformation. The diaphragm spring drives the clutch pressure plate to displace, thereby realizing the separation, engagement and semi-engagement of the clutch. The above-mentioned state torque sensors can all feedback real-time torque data. Combined with the laser rangefinder on the side far away from the cylinder to measure the displacement change curve of the clutch pressure plate, the motor output torque of the clutch assembly under different loads can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the output shaft and clutch assembly of the present invention.

[0029] Figure 3It is a structural schematic diagram of the U-shaped plate and the pushing frame of the present invention.

[0030] Figure 4 It is a schematic structural diagram of the fixing seat and the annular plate of the present invention.

[0031] Figure 5 It is a left axonometric view of the fixing seat of the present invention.

[0032] Figure 6 It is a cutaway right axonometric view of the fixing seat of the present invention.

[0033] Figure 7 It is a structural schematic diagram of the annular plate and the guide groove of the present invention.

[0034] Figure 8 It is a schematic structural diagram of the annular plate and the clutch pressure plate of the present invention.

[0035] Fig. 9 For the present invention Figure 3 A is an enlarged view of the middle image.

[0036] The accompanying drawings are marked as follows: 1. Equipment body; 2. Fixed seat; 3. Display screen; 4. Torque sensor; 5. Coupling; 6. Rotating shaft; 7. Support seat; 8. Annular plate; 9. Connecting rod; 10. Push frame; 11. Baffle; 12. Support plate; 13. Laser rangefinder; 14. Release bearing; 15. Pressure sensor; 16. Support frame; 17. Motor bracket; 18. Motor; 19. Fastening bolt; 20. Rotating block; 21. Guide groove; 22. Guide cylinder; 23. Connecting shaft; 24. First spring; 25. Sliding block; 26. Arc groove; 27. Clamping groove; 28. Pull rod; 29. ​​Clamping block; 30. Second spring; 31. Fixed rod; 32. Output shaft; 33. Cylinder; 34. U-shaped plate; 35. Connecting bolt; 36. Clutch assembly. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] The free travel of the clutch assembly refers to the gap between the outer end of the clutch diaphragm spring and the release bearing on the pedal. Reasonable free travel can reduce the wear between the clutch assembly components and extend the service life of the clutch assembly. If the free travel is too small or too large, it may cause abnormal wear of the clutch assembly components. The free travel of the clutch assembly is an important parameter for measuring a clutch assembly. When measuring the free travel of the clutch assembly, it is necessary to use a tool to fix the clutch assembly. To measure the free travel of the fixed clutch assembly, it is necessary to use a tool and a vernier caliper to measure the distance between the front end face of the release bearing and the front end of the diaphragm spring. It is necessary to strictly maintain the same measurement method and visually read the readings. Multiple measurements are difficult to ensure the consistency of the measurement method, which will inevitably lead to deviations in the test results, thereby affecting the accuracy of the test data.

[0040] See also Figure 1 As shown, the first embodiment of the present invention provides a clutch assembly detection device and detection method, including a device body 1, the device body 1 includes a fixing seat 2 for fixing the clutch assembly 36 and a display screen 3 for displaying sensor data, a torque measuring part, a distance measuring part and a pressure measuring part.

[0041] See also Figure 1 As shown, the torque measuring part includes a torque sensor 4, the torque sensor 4 is electrically connected to the display screen 3, the two output ends of the torque sensor 4 are respectively fixedly connected with left and right axial couplings 5, a rotating shaft 6 is slidably connected in the coupling 5 away from the side of the motor 18, the rotating shaft 6 is rotatably connected to the device body 1 through the support seat 7, the right end of the rotating shaft 6 is coaxially fixedly connected to the left end of the fixed seat 2, and the distance measuring part includes an annular plate 8, a plurality of connecting rods 9 are arranged in the annular plate 8, and the ends of the plurality of connecting rods 9 facing the center of the annular plate 8 can be inserted In the groove of the clutch pressure plate, the distance measuring part includes a pushing frame 10 located above the device body 1 and capable of moving left and right, the pushing frame 10 is provided with an annular baffle 11, a support plate 12 fixedly connected to the device body 1 is provided on the right side of the annular plate 8, two laser rangefinders 13 are provided at the left end of the support plate 12, the laser rangefinder 13 is electrically connected to the display screen 3, and the pressure measuring part includes a release bearing 14 fixedly connected to the left end pushing frame 10, a pressure sensor 15 is provided at the left end of the release bearing 14, and the pressure sensor 15 is electrically connected to the display screen 3.

[0042] See also Figure 1 , Figure 3 , Figure 8 and Fig. 9As shown, the distance measuring part includes an annular plate 8, in which a plurality of connecting rods 9 are arranged, and one end of the plurality of connecting rods 9 facing the center of the annular plate 8 can be inserted into the clutch pressure plate, and the distance measuring part includes a pushing frame 10 located above the device body 1 and capable of moving left and right, and an annular baffle 11 is arranged on the pushing frame 10, and a support plate 12 fixedly connected to the device body 1 is arranged on the right side of the annular plate 8, and two laser rangefinders 13 are arranged on the left end of the support plate 12, and the laser rangefinder 13 is electrically connected to the display screen 3.

[0043] See also Figure 1 and Figure 6 As shown, the fixing seat 2 is provided with a plurality of screw holes extending therethrough, and the fixing seat 2 can be detachably connected to the clutch assembly 36 via the fastening bolts 19. The fixing seat 2 is provided with an annular rotating groove with an opening facing right, and a rotating block 20 is rotatably connected in the rotating groove.

[0044] See also Figure 1 As shown, the laser rangefinder 13 on the side far from the cylinder 33 corresponds to the annular plate 8, and the laser rangefinder 13 on the side far from the cylinder 33 can measure the displacement change of the annular plate 8 in real time. The laser rangefinder 13 on the side close to the cylinder 33 corresponds to the baffle 11, and the laser rangefinder 13 on the side close to the cylinder 33 can measure the displacement change of the baffle 11 in real time.

[0045] See also Figure 3 and Fig. 9 As shown, a cylinder 33 located below the laser rangefinder 13 is provided at the left end of the support plate 12 , a U-shaped plate 34 is fixedly connected to the left end of the cylinder 33 , and the left end of the U-shaped plate 34 is detachably connected to the push frame 10 via a connecting bolt 35 .

[0046] See also Figure 2 , Figure 3 and Fig. 9 As shown, the upper end of the equipment body 1 is fixedly connected to a fixing rod 31 located on the left side of the support plate 12, and the fixing rod 31 is rotatably connected to an output shaft 32 coaxial with the fixing seat 2. The left end of the output shaft 32 is gear-shaped, and the left end of the output shaft 32 can engage with the driven plate in the clutch assembly 36.

[0047] During the inspection, align the screw hole on the fixing seat 2 with the hole position of the clutch assembly 36, use the fastening bolt 19 to complete the fixation of the fixing seat 2 and the clutch assembly 36, insert the left end of the output shaft 32 into the driven plate tooth groove in the clutch assembly 36, and the pre-installation of the clutch assembly 36 is completed. Use the connecting bolt 35 to fix the U-shaped plate 34 and the push frame 10, and then turn on the cylinder 33 and the laser rangefinder 13 close to the side of the cylinder 33. The cylinder 33 drives the U-shaped plate 34 to move to the left, and the U-shaped plate 34 drives the push frame 10 to move to the left, and the push frame 10 is pushed. The moving frame 10 drives the release bearing 14 to move to the left, and the release bearing 14 drives the pressure sensor 15 to move to the left. At the same time, the push frame 10 drives the baffle 11 to move to the left synchronously. The push frame 10, the baffle 11, the release bearing 14 and the pressure sensor 15 move to the left synchronously. As the baffle 11 moves to the left, the laser rangefinder 13 close to the side of the cylinder 33 emits laser light to the baffle 11 in real time, and the laser rangefinder 13 is reflected back to the laser rangefinder 13 by the baffle 11, so that the displacement change of the baffle 11 can be measured in real time, and the displacement change data of the baffle 11 is output to the display On the display screen 3, when the release bearing 14 drives the pressure sensor 15 not to contact the diaphragm spring of the clutch assembly 36, the pressure sensor 15 does not deform, and the data measured by the pressure sensor 15 is zero. As the cylinder 33 drives the U-shaped plate 34 to move to the left, the displacement change data measured by the laser rangefinder 13 close to the cylinder 33 side continues to increase. When the release bearing 14 drives the left end of the pressure sensor 15 to contact the diaphragm spring, as the pressure sensor 15 is subjected to the force of the diaphragm spring, the diaphragm spring undergoes elastic deformation, and the pressure sensor 15 measures The data starts to change from zero. At this time, the displacement change measured by the laser rangefinder 13 is the free stroke of the clutch assembly 36. The data measured by the pressure sensor 15 starts to change from zero instantaneously. Combining the data measured by the laser rangefinder 13 close to the side of the cylinder 33 and the change curve of the pressure sensor 15, the free stroke of the clutch assembly 36 can be accurately measured, making the free stroke detection data of the clutch assembly 36 more accurate. The cylinder 33 is used for propulsion and the laser rangefinder 13 is used for accurate distance measurement, thereby avoiding the measurement error caused by the difference in the technique of using a vernier caliper.

[0048] Embodiment 2

[0049] On the basis of the above embodiments, in actual testing, the clutch assembly 36 is assembled from a clutch cover, a flywheel, a clutch driven plate, a clutch plate, a clutch pressure plate, and a diaphragm spring. The clutch disengagement stroke refers to the period from when the clutch pedal is depressed to when the clutch is completely disengaged. When the clutch is completely disengaged, the diaphragm spring drives the clutch pressure plate to move to the maximum stroke position. Therefore, the timing for determining when the clutch is completely disengaged is when the clutch pressure plate moves to the maximum distance away from the clutch plate. However, the clutch assembly 36 is a highly integrated enclosed space, and the clutch is in a rotating state when working. Neither measuring tools nor sensors can directly and effectively measure the disengagement stroke of the clutch assembly 36. However, the disengagement stroke of the clutch is an important parameter for measuring the clutch.

[0050] See also Figure 4 and Figure 7 As shown, the technical solution adopted on the basis of the above-mentioned embodiment 1 includes that a plurality of guide grooves 21 are evenly distributed in the circumferential direction and open to the right are opened on the rotating block 20, and the distance between the guide groove 21 and the center of the rotating block 20 decreases in the clockwise direction. A left and right axial guide cylinder 22 is slidably connected in the guide groove 21, and a connecting shaft 23 is slidably connected in the guide cylinder 22. The left end of the connecting shaft 23 is connected to the left side wall of the guide cylinder 22 via a first spring 24.

[0051] See also Figure 1 and Figure 8 As shown, the annular plate 8 is provided with a plurality of sliding grooves, and a plurality of sliding blocks 25 corresponding to the sliding grooves are fixedly connected to the fixed seat 2. The annular plate 8 is slidably connected to the fixed seat 2 via the sliding grooves and the sliding blocks 25. The annular plate 8 is provided with a sliding groove with an opening toward the center of the annular plate 8. The annular plate 8 is provided with a plurality of connecting grooves with openings facing left. The right end of the connecting groove is connected to the guide groove 21 on the corresponding side. The connecting rod 9 is slidably connected to the sliding groove. The right end of the connecting shaft 23 extends into the connecting groove on the corresponding side and is fixedly connected to the connecting rod 9.

[0052] See also Figure 4 and Figure 5 As shown, the fixed seat 2 is provided with an arc groove 26 which opens to the left and is connected to the rotating groove. The left end surface of the fixed seat 2 is provided with two card slots 27 which are connected to the arc groove 26. The left end of the rotating block 20 is fixedly connected with a pull rod 28 located in the arc groove 26. The pull rod 28 is provided with a movable groove which opens downward. A card block 29 which can be inserted into the card slot 27 is slidably connected in the movable groove. The upper end of the card block 29 is connected to the side wall of the movable groove via a second spring 30.

[0053] During the inspection, subsequent operation steps are performed on the basis of the first embodiment, the card block 29 is pushed to move upward and the second spring 30 is compressed, so that the card block 29 moves upward out of the card slot 27, the limit on the pull rod 28 and the rotating block 20 is released, and the pull rod 28 is pushed to swing forward in the arc groove 26. The pull rod 28 drives the rotating block 20 to swing forward relative to the fixed seat 2, so that the rotating block 20 drives the multiple guide grooves 21 to swing clockwise. As the guide groove 21 rotates clockwise, the guide cylinder 22 slides in the guide groove 21. Because the distance from the guide groove 21 to the center of the rotating block 20 in the clockwise direction gradually decreases, under the joint action of the guide groove 21 and the slide groove, the guide cylinder 22 drives the connecting shaft 23 and the connecting rod 9 to move centripetally toward the center of the annular plate 8. When the pull rod 28 drives the card block 29 to move forward to the limit position, the card block 29 is released, and the card block 29 is inserted into the card slot 27 under the action of the second spring 30. At this time, the pull rod 28 drives the rotating block 20 to swing forward to the limit position relative to the fixed seat 2. At this time, the end of the connecting rod 9 toward the center of the ring plate 8 is inserted into the groove of the clutch pressure plate. At this time, the clutch pressure plate is fixed to the ring plate 8 through the connecting rod 9. When the clutch pressure plate is displaced, it can drive the ring plate 8 to move synchronously, so that the displacement of the pressure plate inside the clutch is mapped to the ring plate 8. The clutch separation stroke can be measured by measuring the displacement change of the ring plate 8. The laser measuring device away from the side of the cylinder 33 is turned on. The motor 18 drives the coupling 5 and the torque sensor 4 to rotate through the spline, the torque sensor 4 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the fixed seat 2 to rotate. Because the fixed seat 2 and the clutch assembly 36 are fixedly connected at this time, the fixed seat 2 can drive the clutch assembly 36 to rotate synchronously, so that the clutch pressure plate is stationary relative to the clutch assembly 36. Because the annular plate 8 and the fixed seat 2 are slidably connected, the annular plate 8 and the connecting rod 9 therein are stationary relative to the clutch pressure plate, and the connecting rod 9 and the annular plate 8 are relatively stationary relative to the clutch pressure plate. It can be seen from the first embodiment that when the release bearing 14 drives the pressure sensor 15 to continue to squeeze the diaphragm spring to the left, the outer side of the diaphragm spring drives the clutch pressure plate to move to the right. The clutch pressure plate drives the annular plate 8 to move rightward through the connecting rod 9, and the annular plate 8 drives the connecting shaft 23 to move rightward, so that the connecting shaft 23 stretches the first spring 24, and the laser rangefinder 13 on the side away from the cylinder 33 corresponds to the annular plate 8, and can measure the displacement of the annular plate 8 and synchronize the data to the display screen 3 in real time. When the annular plate 8 moves to the right to the extreme position, the clutch pressure plate moves to the right to the extreme position. At this time, the clutch pressure plate is completely separated from the clutch plate. The displacement of the annular plate 8 relative to the initial state is the clutch disengagement stroke. The displacement of the pressure plate inside the clutch can be mapped to the external annular plate 8 through the connecting rod 9, so that the annular plate 8 and the clutch pressure plate keep moving synchronously, and then the clutch disengagement stroke is measured.

[0054] Embodiment 3

[0055] On the basis of the above embodiments, it is found in actual detection that the output torque of the motor 18 to the clutch changes in real time. The torque of the motor 18 will change in real time according to the degree of contact between the clutch plate and the flywheel, that is, the displacement of the clutch pressure plate. When the clutch pressure plate completely presses the clutch plate, the torque transmission efficiency of the clutch is the highest. At this time, the torque of the clutch plate is the same as the output torque of the motor 18. When the clutch pressure plate moves to the right to the maximum separation stroke, the torque transmission efficiency of the clutch is the lowest. At this time, the clutch plate is completely separated from the flywheel, and the output torque of the clutch plate is zero. Between these two extreme situations, there is a semi-clutch state. In the semi-clutch state, the clutch plate slips relative to the flywheel, and a part of the output torque of the motor 18 is transmitted to the clutch plate through friction, and then the clutch plate drives the driven plate and the output shaft 32. The above data needs to be combined with the displacement stroke of the clutch pressure plate to measure the output torque of the motor 18 in real time.

[0056] See also Figure 1 As shown, the technical solution adopted on the basis of the above-mentioned embodiment 2 includes two support frames 16 fixedly connected to the equipment body 1, the torque sensor 4 is fixedly connected to the front and rear support frames 16, a key slot is provided on the coupling 5, the rotating shaft 6 is slidably connected to the key slot, and a motor bracket 17 is fixedly connected to the left end of the equipment body 1, a motor 18 is provided on the motor bracket 17, and the output end of the motor 18 is slidably connected to the coupling 5 close to the side of the motor 18 via a spline.

[0057] On the basis of the above-mentioned embodiment 2, when the detection continues, as the release bearing 14 drives the pressure sensor 15 to squeeze the diaphragm spring to the left, the diaphragm spring undergoes elastic deformation, and the diaphragm spring drives the clutch pressure plate to move to the right, so that the pressure applied by the clutch pressure plate to the clutch plate gradually decreases. As the pressure between the flywheel and the clutch plate gradually decreases, the friction force on the flywheel gradually decreases. As the distance of the annular plate 8 moving to the right gradually increases, this data is measured by the laser rangefinder 13 away from the side of the cylinder 33 and displayed on the display screen 3 in real time. The torque sensor 4 measures that the torque output by the motor 18 gradually decreases. As the separation stroke of the clutch pressure plate increases, the output torque of the motor 18 gradually decreases. When the clutch pressure plate reaches the separation stroke, the flywheel is out of contact with the clutch plate. The friction force on the flywheel is zero, and the minimum output torque of the motor 18 can be measured at this time. The output torque of the motor 18 will gradually decrease with the displacement of the annular plate 8 to the right. Similarly, when the cylinder 33 drives the push frame 10 and the release shaft to move to the right, the diaphragm spring drives the clutch pressure plate to move to the left, so that the pressure applied by the clutch pressure plate to the clutch plate gradually increases. As the displacement of the annular plate 8 to the left changes, the output torque of the motor 18 measured by the torque sensor 4 gradually increases. When the cylinder 33 drives the push frame 10, the release bearing 14 and the pressure sensor 15 to break contact with the diaphragm spring, the measured output torque of the motor 18 is the largest. The above torque value will change in real time with the displacement of the annular plate 8, and can measure the output torque of the motor 18 when the clutch is separated, engaged and semi-coupled.

[0058] In summary, when measuring the free stroke, separation stroke and output torque of the clutch assembly 36, it is only necessary to control the cylinder 33 to complete the reciprocating linear motion. One reciprocating linear motion of the cylinder 33 can measure the above parameters through the laser rangefinder 13, the pressure sensor 15 and the torque sensor 4. The non-intuitive clutch stroke data can be mapped through the annular plate 8 and the baffle 11, so as to measure intuitive data, simplifying the measurement method, improving the detection accuracy and efficiency, and being able to measure the output torque of the motor 18 under different loads according to the data change of the displacement.

[0059] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A clutch assembly detection device, comprising a device body (1), wherein the device body (1) comprises a fixing seat (2) for fixing the clutch assembly and a display screen (3) for displaying sensor data, characterized in that: Also includes: A torque measuring unit, the torque measuring unit comprising a torque sensor (4), the torque sensor (4) being electrically connected to the display screen (3), the two output ends of the torque sensor (4) being respectively fixedly connected to left and right axial couplings (5), the coupling (5) being slidably connected to a rotating shaft (6) on the side away from the motor (18), the rotating shaft (6) being rotationally connected to the device body (1) via a support seat (7), the right end of the rotating shaft (6) being coaxially fixedly connected to the left end of the fixing seat (2); A distance measuring unit, the distance measuring unit comprising an annular plate (8), a plurality of connecting rods (9) being arranged in the annular plate (8), the ends of the plurality of connecting rods (9) facing the center of the annular plate (8) being capable of being inserted into the grooves of the clutch pressure plate, the distance measuring unit comprising a pushing frame (10) being located above the device body (1) and being capable of being moved left and right, the pushing frame (10) being provided with an annular baffle (11), a supporting plate (12) being fixedly connected to the device body (1) being provided on the right side of the annular plate (8), two laser rangefinders (13) being provided at the left end of the supporting plate (12), the laser rangefinders (13) being capable of being moved left and right The laser rangefinder (13) is electrically connected to the display screen (3); a cylinder (33) located below the laser rangefinder (13) is provided at the left end of the support plate (12); the laser rangefinder (13) on the side away from the cylinder (33) corresponds to the annular plate (8); the laser rangefinder (13) on the side away from the cylinder (33) can measure the displacement change of the annular plate (8) in real time; the laser rangefinder (13) on the side close to the cylinder (33) corresponds to the baffle (11); the laser rangefinder (13) on the side close to the cylinder (33) can measure the displacement change of the baffle (11) in real time; A pressure measuring unit, the pressure measuring unit comprising a release bearing (14) fixedly connected to the left end push frame (10), a pressure sensor (15) being provided at the left end of the release bearing (14), and the pressure sensor (15) being electrically connected to the display screen (3).

2. A clutch assembly detection device according to claim 1, characterized in that: Two support frames (16) are fixedly connected to the device body (1), the torque sensor (4) is fixedly connected to the two support frames (16), a key slot is provided on the coupling (5), the rotating shaft (6) is slidably connected to the key slot via a spline, a motor bracket (17) is fixedly connected to the left end of the device body (1), a motor (18) is provided on the motor bracket (17), and an output end of the motor (18) is slidably connected to the coupling (5) on a side close to the motor (18).

3. A clutch assembly detection device according to claim 2, characterized in that: The fixing seat (2) is provided with a plurality of screw holes extending therethrough, and the fixing seat (2) can be detachably connected to the clutch assembly (36) via fastening bolts (19). The fixing seat (2) is provided with an annular rotation groove with an opening facing rightward, and a rotation block (20) is rotatably connected in the rotation groove.

4. A clutch assembly detection device according to claim 3, characterized in that: The rotating block (20) is provided with a plurality of guide grooves (21) uniformly distributed along the circumferential direction and opening to the right, the distance between the guide grooves (21) and the center of the rotating block (20) decreasing in the clockwise direction, a left-right axial guide cylinder (22) is slidably connected in the guide grooves (21), a connecting shaft (23) is slidably connected in the guide cylinder (22), and the left end of the connecting shaft (23) is connected to the left side wall of the guide cylinder (22) via a first spring (24).

5. A clutch assembly detection device according to claim 4, characterized in that: The annular plate (8) is provided with a plurality of sliding grooves, and the fixed seat (2) is fixedly connected with a plurality of sliding blocks (25) corresponding to the sliding grooves one by one. The annular plate (8) is slidably connected to the fixed seat (2) via the sliding grooves and the sliding blocks (25). The annular plate (8) is provided with a sliding groove with an opening toward the center of the annular plate (8). The annular plate (8) is provided with a plurality of connecting grooves with openings facing leftward, and the right ends of the connecting grooves are connected to the guide grooves (21) on the corresponding sides thereof. The connecting rod (9) is slidably connected to the sliding grooves, and the right end of the connecting shaft (23) extends into the connecting groove on the corresponding side thereof and is fixedly connected to the connecting rod (9).

6. A clutch assembly detection device according to claim 5, characterized in that: The fixed seat (2) is provided with an arc groove (26) with an opening facing left and connected to the rotating groove. The left end surface of the fixed seat (2) is provided with two clamping grooves (27) connected to the arc groove (26). The left end of the rotating block (20) is fixedly connected with a pull rod (28) located in the arc groove (26). The pull rod (28) is provided with a movable groove with an opening facing downward. A clamping block (29) capable of being inserted into the clamping groove (27) is slidably connected in the movable groove. The upper end of the clamping block (29) is connected to the side wall of the movable groove via a second spring (30).

7. A clutch assembly detection device according to claim 6, characterized in that: The upper end of the device body (1) is fixedly connected to a fixing rod (31) located on the left side of the support plate (12); the fixing rod (31) is rotatably connected to an output shaft (32) coaxial with the fixing seat (2); the left end of the output shaft (32) is gear-shaped and can mesh with a driven disc in a clutch assembly (36).

8. A clutch assembly detection device according to claim 7, characterized in that: A U-shaped plate (34) is fixedly connected to the left end of the cylinder (33), and the left end of the U-shaped plate (34) is detachably connected to the push frame (10) via a connecting bolt (35).

9. A method for detecting a clutch assembly detection device, using the clutch assembly detection device according to claim 8, characterized in that: The following steps are involved: S1. The clutch assembly (36) and the fixing seat (2) are fixed by fastening bolts (19), and the left end of the output shaft (32) is inserted into the tooth groove of the driven plate in the clutch assembly (36), so that the left end of the output shaft (32) is meshed with the driven plate; S2, turning on the motor (18), the motor (18) drives the rotating shaft (6) to rotate via the coupling (5) and the torque sensor (4), the rotating shaft (6) drives the fixed seat (2) and the clutch assembly (36) to rotate, and the flywheel in the clutch assembly (36) drives the driven plate and the output shaft (32) to rotate via the clutch plate; S3, turning on the air cylinder (33), the display screen (3), the laser rangefinder (13), the pressure sensor (15) and the torque sensor (4); the air cylinder (33) moves to the left, and the air cylinder (33) drives the release bearing (14) and the pressure sensor (15) to move to the left via the U-shaped plate (34) and the push frame (10); the laser rangefinder (13) measures the displacement change of the annular plate (8) and the baffle (11); the torque sensor (4) measures the real-time output torque of the motor (18) and displays it on the display screen (3); S4, the cylinder (33) is moved to the right to the initial position, and then the cylinder (33) and the motor (18) are turned off, and the data measured on the display screen (3) are analyzed and recorded.

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