Clutch bearing dustproof performance detection machine

Abstract

The application relates to the field of automobile part detection devices, and discloses a clutch bearing dustproof performance detection machine, which comprises a base, a sliding seat is slidably connected to the middle position of the surface of the base, one end surface of the base is connected with a feeding device arranged horizontally, the feeding device is used for pushing a centering and impacting device to linearly move, the centering and impacting device is connected with the sliding seat, a separation bearing is sleeved at the end of the centering and impacting device, an outer ring of the separation bearing is sleeved in an inner ring of a variable-speed motor output end, the variable-speed motor is connected with the base, and a dust feeding device is arranged between the variable-speed motor and the centering and impacting device. The application realizes the composite working condition simulation of automatic centering, multi-angle eccentric impact and synchronous dust spraying of the clutch separation bearing during detection in a new energy automobile driving system, and solves the technical problems of single working condition, low automation degree and difficulty in meeting the high-standard test demand of new energy automobile core components in the traditional detection method.

Description

Technical Field

[0001] This invention relates to the field of automotive parts testing equipment, specifically a clutch bearing dustproof performance testing machine. Background Technology

[0002] With the rapid development of new energy vehicle technologies such as plug-in hybrid, pure electric, and fuel cell vehicles, more stringent requirements have been placed on the reliability, durability, and sealing performance of key drive system components. As a core component for power coupling and interruption, the clutch's performance directly affects the smoothness of power transmission and energy efficiency of the entire vehicle. The release bearing is a crucial component of the clutch actuator system, responsible for withstanding axial forces and impact loads during frequent engagement and disengagement. In new energy vehicles, especially hybrid models where the engine and motor work together, the working environment of the release bearing is more complex. It not only needs to cope with the vibrations of the traditional internal combustion engine but also withstand the dynamic off-center load impacts caused by the high-frequency start-stop of the electric motor.

[0003] Currently, there is relevant research on testing equipment for the dustproof performance of automotive clutch bearings. For example, Chinese invention patent application CN201910277724.3, entitled "A Dustproof Performance Testing Machine for Automotive Clutch Bearings," discloses a testing device composed of a frame, testing fixtures, transmission system, loading system, and sensors. This device can simulate the working conditions of bearings in actual use, realize variable load and high temperature dustproof tests, and has real-time monitoring and automatic shutdown functions for parameters such as temperature and vibration. This testing machine is suitable for bearings with an inner diameter of Φ50–100mm, and can shorten the testing cycle and save costs to a certain extent.

[0004] However, existing testing equipment, including the aforementioned testing machines, typically only applies constant axial loads or impacts from a single direction. This makes it difficult to simulate the dynamic eccentric impact conditions of clutches in new energy vehicles (such as plug-in hybrid, pure electric, and fuel cell vehicles) caused by frequent starts and stops, torque fluctuations, and vibrations. This results in a discrepancy between the testing environment and the actual working conditions of bearings in electric drive systems. Furthermore, existing equipment has a low level of automation; bearing alignment, tightening, impact, and dust spraying largely rely on manual operation, leading to poor positioning accuracy and insufficient timing coordination, resulting in low test consistency and high labor costs. In addition, the equipment lacks protection mechanisms for precision components; vibrations from high-speed impacts can easily damage force sensors, and dust can easily penetrate the transmission mechanism, severely affecting the equipment's lifespan. Finally, the parameters of existing equipment are poorly controllable; key parameters such as impact angle, impact force, and dust concentration are difficult to precisely adjust, making it impossible to quantify the degradation of bearing sealing performance under different operating conditions of electric drive systems.

[0005] Therefore, a dustproof performance testing machine for clutch bearings is needed to solve the above problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a clutch bearing dustproof performance testing machine, including a base, a slide block slidably connected to the middle position of the base surface, one end surface of the base being connected to a horizontally arranged feeding device, the feeding device being used to push a centering impact device to move linearly, the centering impact device being connected to the slide block, a release bearing being sleeved at the end of the centering impact device, the outer ring of the release bearing being sleeved on the inner ring of the output end of a variable speed motor, the variable speed motor being connected to the base, and a dust feeding device being provided between the variable speed motor and the centering impact device; The dust collection device includes a transparent cylinder cover. The lower end of the transparent cylinder cover is connected to a collection pipe, which is connected to a pipe. One side of the transparent cylinder cover is connected to a push ring, and the other side of the transparent cylinder cover is rotatably connected to the output end of a variable speed motor. The top of the transparent cylinder cover is connected to the lower end of a dust inlet hood. The upper end of the dust inlet hood is connected to one end of a triggering device, and the other end of the triggering device is connected to a feeding tank. Friction plate waste dust is placed inside the feeding tank. The inner wall of the dust inlet hood is connected to the end of a support frame. A bevel gear set is installed at the bottom of the support frame. A fan is driven by the bevel gear set. The output shaft of the variable speed motor drives the bevel gear set to rotate through a differential belt pulley set. The triggering device includes a first feeding pipe and a second feeding pipe, with a control plate slidably connected between the first and second feeding pipes. The lower end of the control plate is provided with a circular filter section that fits into the inner wall of the first and second feeding pipes. The opposite ends of the first and second feeding pipes are respectively connected to a dust inlet hood and a discharge tank. The bottom of the control plate is connected to a first sliding trigger block. The first sliding trigger block is symmetrically equipped with telescopic elastic elements. The tops of the two telescopic elastic elements are respectively connected to the first and second feeding pipes. The lower end of the first sliding trigger block is slidably connected to a support slide, which is respectively connected to the first and second feeding pipes. The push ring is connected to the slide block, and a second sliding trigger block is fixedly mounted on the push ring. When the push ring and the slide block slide synchronously, the second sliding trigger block can squeeze the first sliding trigger block to move upward.

[0007] Furthermore, the centering impact device includes a pneumatic control device; The pneumatic control device includes an air pump, which is connected to an integrated control valve. The integrated control valve is connected to a stepper motor drive. The integrated control valve is connected to one end of a fastening conduit, one end of an impact hose, and one end of a centering conduit. The other end of the fastening conduit is connected to a pneumatic fastening device. The other end of the impact hose is connected to an angle-adjusting impact device. The other end of the centering conduit is connected to a pneumatic centering device. The integrated control valve includes a first control valve, which is connected to one end of a fastening conduit, one end of an impact hose, and one end of a centering conduit. The valve stem of the first control valve is driven to one side of a first gear, and the other side of the first gear is driven to the output end of a stepper motor. The stepper motor is connected to a slide block. A second exhaust valve is installed on the centering conduit. The valve stem of the second exhaust valve is driven to a second gear, and the second gear meshes with the first gear.

[0008] Furthermore, the pneumatic centering device includes a first half-ring, a second half-ring, and a feed ring plate; Multiple blocking bars are installed equidistantly in a ring between the first and second half-rings. Each blocking bar contacts the arc surface of a centering arc block, and each centering arc block contacts the outer ring of a locking post. The centering arc block is rotatably connected to the feed ring plate, which is rotatably connected to the first and second half-rings. The feed ring plate is drivenly connected to the output end of a pneumatic push rod. The pneumatic push rod is installed on the inner ring of the second half-ring and is connected to the other end of the centering guide tube. The outer ring of the second half-ring is connected to a slide block.

[0009] Furthermore, the pneumatic fastening device includes a fastening cylinder, which is connected to a fastening conduit. The bottom of the fastening cylinder is connected to a locking pin. The piston of the fastening cylinder is connected to one end of a push rod, and the other end of the push rod is connected to the lower end of a telescopic column. The telescopic column is slidably connected to the fastening cylinder.

[0010] Furthermore, the angle-adjusting impact device includes a first stabilizing ring plate and a second stabilizing ring plate. The outer rings of the first and second stabilizing ring plates are connected to the base. The first and second stabilizing ring plates are connected to both ends of a plurality of connecting rods arranged in a ring at equal intervals. An annular groove is formed between the first and second stabilizing ring plates. The annular groove is slidably connected to the mounting base plate of the booster cylinder. The booster cylinder is connected to one end of the connecting block. The output end of the booster cylinder impacts the surface of the locking post under the action of the pneumatic control device. The booster cylinder is connected to the other end of the impact hose.

[0011] Furthermore, the other end of the connecting block is connected to the inner ring of the ring gear, one side of the ring gear is rotatably connected to the second stabilizing ring plate, the ring gear meshes with the angle gear, the angle gear is driven to rotate by the angle motor, and the angle motor is connected to the slide.

[0012] Furthermore, the feeding device includes a force-controlled electric push rod, the output end of which is slidably connected to a chuck, the chuck being movably connected to a locking pin, one end of which is drivenly connected to a centering impact device, the other end of which is rotatably connected to a ball bearing, the outer ring of which is drivenly connected to the centering impact device, the output end of which is fitted with a pre-compression elastic element, the force-controlled electric push rod being slidably connected to symmetrically arranged stabilizing slide rods, and the stabilizing slide rods being slidably connected to the chuck.

[0013] Furthermore, the inner ring of the push ring is connected to the outer ring of the rubber sheet, and the inner ring of the rubber sheet is sleeved on the outer ring of the locking post.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The differential belt pulley group is linked to the speed change motor to realize the dynamic coupling of speed and dust amount. The higher the speed, the stronger the fan airflow and the greater the amount of dust carried out instantly. It accurately simulates the actual situation of the clutch in the new energy vehicle drive system being worn more and generating more dust under high speed conditions. It realizes the quantitative reproduction of dust concentration under different working conditions. At the same time, the trigger device realizes millisecond-level instantaneous dust spray through mechanical linkage, accurately simulating the actual wear condition of the clutch in the electric drive system at the moment of engagement. It can test the dynamic interception capability of the bearing seal against sudden pollution with pulse dust flow, and ensure the consistency of the test through standardized dust spray parameters. At the same time, it significantly reduces dust consumption and equipment pollution. (2) The adjustable angle impact device can simulate the complex off-center load conditions caused by the start-stop torque fluctuation of the motor in the actual operation of the clutch of new energy vehicles. It can detect the dustproof performance of the release bearing under non-ideal stress conditions. At the same time, it can also provide high-energy instantaneous impact. The booster cylinder can adjust the hydraulic impact force to ensure that the impact energy is sufficient to trigger the potential failure of the release bearing seal. The frame structure formed by the first and second stabilizing ring plates and the connecting rod maintains the overall rigidity of the device when subjected to repeated impacts, ensuring the reliability of the test data. Finally, the ring guide rail design allows impact to be applied at any position on the circumference of the bearing, which can systematically evaluate the full circumferential sealing performance of the bearing suitable for new energy vehicles. (3) The feeding device provides precise axial feed through the force-controlled electric push rod. When the booster cylinder generates an impact, the impact force is transmitted to the chuck through the chuck. At this time, the preload elastic element is compressed and absorbs the impact energy. At the same time, the ball structure converts the axial impact into rolling friction, and the stabilizing slide rod bears the radial torque, forming a mechanical decoupling structure between the force-controlled electric push rod and the impact load. This ensures that the electric push rod can withstand the axial pressure within the preset range. Meanwhile, since the outer ring of the release bearing is sleeved on the output end of the variable speed motor, it is at risk of instability when subjected to radial impact under typical operating conditions of new energy vehicles. The preload elastic element, through its continuous preload, pushes the chuck and the entire transmission chain, always applying a stable axial clamping force to the release bearing. This clamping force forces the release bearing to automatically reset after vibration and impact, suppressing its radial sway and ensuring that its inner ring always rotates stably around the output shaft center of the variable speed motor. This ensures the stability of the release bearing test process and the accuracy of the data in the new energy vehicle drive system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the dust supply device in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded view of the triggering device in this invention; Figure 5 This is a schematic diagram of the feeding device in this invention; Figure 6 This is a schematic cross-sectional view of the chuck, chuck pin, and ball bearings in this invention. Figure 7 This is a top view of the feeding device in this invention; Figure 8 This is a schematic diagram of the centering impact device in this invention; Figure 9 This is an exploded view of the integrated control valve in this invention; Figure 10 This is an exploded view of the pneumatic centering device in this invention; Figure 11 This is a cross-sectional structural diagram of the pneumatic fastening device in this invention; Figure 12 This is an exploded view of the angle-adjusting impact device in this invention; Figure 13 This is a schematic diagram of the slide block structure in this invention; Figure 14 This is a schematic diagram of the base structure in this invention.

[0016] In the diagram: 1-Base, 2-Slide, 3-Feeding device, 31-Force-controlled electric push rod, 311-Preload plate, 312-Preload elastic element, 313-Stabilizing slide rod, 32-Chuck, 33-Clamping post, 34-Ball bearing, 4-Centering impact device, 41-Pneumatic control device, 411-Air pump, 412-Stepper motor, 413-Integrated control valve, 4131-First gear, 4132-Second gear, 4133-First control valve, 4134-Second exhaust valve, 414-Fastening guide tube, 415-Centering guide tube, 416-Impact hose, 42-Pneumatic centering device, 421-First half ring, 422-Second half ring, 423-Blocking bar, 424-Feed ring plate, 425-Centering arc block, 426-Pneumatic push rod, 43-Angle adjusting impact device, 43 1-First stabilizing ring plate, 432-Second stabilizing ring plate, 433-Boosting cylinder, 434-Ring gear, 435-Connecting block, 436-Angle gear, 437-Angle motor, 44-Pneumatic fastening device, 441-Fastening cylinder, 442-Piston, 443-Telescopic column, 5-Dust feeding device, 51-Push ring, 52-Transparent cylinder cover, 521-Collection pipe, 53-Dust inlet hood, 54-Differential belt pulley assembly, 55-Bevel gear assembly, 56-Fan, 57-Support frame, 58-Triggering device, 581-First feeding pipe, 582-Second feeding pipe, 583-Supporting slide, 584-First sliding trigger block, 585-Telescopic elastic element, 586-Control board, 587-Second sliding trigger block, 59-Discharge tank, 6-Variable speed motor, 7-Separation bearing. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0018] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0019] like Figures 1 to 14 As shown, a clutch bearing dustproof performance testing machine includes a base 1, a slide block 2 slidably connected to the middle of the surface of the base 1, one end of the base 1 is connected to a horizontally arranged feeding device 3, the feeding device 3 is used to push a centering impact device 4 to move linearly, the centering impact device 4 is connected to the slide block 2, a release bearing 7 is sleeved at the end of the centering impact device 4, the outer ring of the release bearing 7 is sleeved on the inner ring of the output end of a variable speed motor 6, the variable speed motor 6 is connected to the base 1, a dust supply device 5 is arranged between the variable speed motor 6 and the centering impact device 4, the dust supply device 5 includes a transparent cylinder cover 52, the lower end of the transparent cylinder cover 52 is connected to a collection pipe 521, the collection pipe 521 is connected to a pipe, and one side of the transparent cylinder cover 52 is connected to a push ring 51. The other side of the transparent cylinder cover 52 is rotatably connected to the output end of the variable speed motor 6. The top of the transparent cylinder cover 52 is connected to the lower end of the dust inlet hood 53. The upper end of the dust inlet hood 53 is connected to one end of the trigger device 58, and the other end of the trigger device 58 is connected to the feeding tank 59. Friction plate waste dust is placed inside the feeding tank 59. The inner wall of the dust inlet hood 53 is connected to the end of the support frame 57. A bevel gear set 55 is installed at the bottom of the support frame 57. The bevel gear set 55 is connected to the fan 56. The output shaft of the variable speed motor 6 drives the bevel gear set 55 to rotate through the differential pulley set 54. The variable speed motor 6 drives the differential pulley set 54 and the bevel gear set 55 to drive the fan 56 to generate negative pressure airflow inside the dust inlet hood 53. The friction plate waste dust in the feeding tank 59 is affected by gravity and airflow. Under the action of the trigger device 58 and the dust inlet hood 53, the dust is blown towards the transparent cylinder cover 52 and finally sprayed onto the working release bearing 7. The differential belt pulley group 54 and the variable speed motor 6 realize the dynamic coupling of speed and dust volume. The higher the speed, the stronger the airflow of the fan 56, and the greater the amount of dust carried out instantly. This simulates the actual situation of increased wear and more dust generated under the high speed condition of the clutch, and realizes the quantitative reproduction of dust concentration under different working conditions. When the slide 2 moves forward to the test station, the second sliding trigger block 587 on its push ring 51 pushes up the first sliding trigger block 584, so that the control plate 586, which is rigidly connected to it, overcomes the resistance of the telescopic elastic element 585 and moves upward, instantly opening the connection between the first feeding pipe 581 and the second feeding pipe. The connection channel of pipe 582; at this time, the friction dust in the feed tank 59 forms a pulse dust flow under the action of the airflow of fan 56, and is accurately sprayed onto the bearing under test through dust inlet hood 53; after completing the instantaneous dust supply, as the slide 2 continues to travel, the second sliding trigger block 587 disengages, and the telescopic elastic element 585 pushes the first sliding trigger block 584 to drive the control board 586 to reset, re-seal the double pipe to achieve self-sealing, and the trigger device 58 achieves millisecond-level instantaneous dust spray through mechanical linkage, accurately simulating the actual wear condition at the moment of clutch engagement. It can test the dynamic interception capability of bearing seal against sudden pollution with pulse dust flow, and ensure test consistency through standardized dust spray parameters, while significantly reducing dust consumption and equipment pollution.

[0020] The triggering device 58 includes a first feeding pipe 581 and a second feeding pipe 582. A control plate 586 is slidably connected between the first feeding pipe 581 and the second feeding pipe 582. The lower end of the control plate 586 is provided with a circular filter section that fits into the inner wall of the first feeding pipe 581 and the inner wall of the second feeding pipe 582. The opposite ends of the first feeding pipe 581 and the second feeding pipe 582 are respectively connected to the dust inlet hood 53 and the discharge tank 59. The bottom of the control plate 586 is connected to a first sliding trigger block 584, and the first sliding trigger block 584 is symmetrically mounted with extensions. The tops of the two telescopic elastic elements 585 are respectively connected to the first feeding pipe 581 and the second feeding pipe 582. The lower end of the first sliding trigger block 584 is slidably connected to the support slide 583. The support slide 583 is respectively connected to the first feeding pipe 581 and the second feeding pipe 582. The push ring 51 is connected to the slide 2. The second sliding trigger block 587 is fixedly mounted on the push ring 51. When the push ring 51 and the slide 2 slide synchronously, the second sliding trigger block 587 can squeeze the first sliding trigger block 584 to move upward.

[0021] The centering impact device 4 includes a pneumatic control device 41, which includes an air pump 411. The air pump 411 is connected to an integrated control valve 413, which is driven by a stepper motor 412. The integrated control valve 413 is connected to one end of a fastening conduit 414, one end of an impact hose 416, and one end of a centering conduit 415. The other end of the fastening conduit 414 is connected to a pneumatic fastening device 44. The other end of the impact hose 416 is connected to an angle-adjusting impact device 43. The other end of the centering conduit 415 is connected to... The pneumatic centering device 42 is connected, and the integrated control valve 413 includes a first control valve 4133. The first control valve 4133 is connected to one end of the fastening conduit 414, one end of the impact hose 416, and one end of the centering conduit 415. The valve stem of the first control valve 4133 is drivenly connected to one side of the first gear 4131, and the other side of the first gear 4131 is drivenly connected to the output end of the stepper motor 412. The stepper motor 412 is connected to the slide 2. The centering conduit 415 is equipped with a second exhaust valve 4134. The valve stem of 34 is connected to the second gear 4132, which meshes with the first gear 4131. The stepper motor 412 drives the second gear 4132 and the first gear 4131 to perform programmed control of the integrated control valve 413, realizing a fully automatic testing process. First, the first control valve 4133 is opened, allowing compressed air to drive the pneumatic centering device 42 through the centering guide tube 415 to complete the adaptive positioning and clamping of the different specifications of the separation bearings 7. After positioning, the stepper motor 412 continues to drive the second gear 4132 to open the second exhaust valve 4134 for rapid exhaust. At the same time, the first control valve 4133 switches the air path to connect the impact hose 416 to the air source, pushing the angle-adjusting impact device 43 to perform precise pneumatic impact and sealing the fastening guide tube 414 to keep the separation bearings 7 fixed. The stepper motor 412 drives the gear set to perform programmed control of the integrated control valve 413, realizing fully automatic intelligent grading operation. This design not only eliminates human operation errors but also improves detection efficiency and the comparability and reliability of data.

[0022] The pneumatic alignment device 42 includes a first half-ring 421, a second half-ring 422, and a feed ring plate. Multiple blocking bars 423 are equidistantly installed in a ring between the first half-ring 421 and the second half-ring 422. Each blocking bar 423 contacts the arc surface of an alignment arc block 425, and each alignment arc block 425 contacts the outer ring of a locking post 33. The alignment arc block 425 is rotatably connected to the feed ring plate 424, which is connected to the first half-ring 421 and the second half-ring. The feed ring plate 424 is rotatably connected to the output end of the pneumatic push rod 426. The pneumatic push rod 426 is installed on the inner ring of the second half-ring 422 and is connected to the other end of the centering guide 415. The outer ring of the second half-ring 422 is connected to the slide 2. The pneumatic centering device 42 drives the feed ring plate 424 to rotate through the pneumatic push rod 426. The feed ring plate 424 drives multiple centering arc blocks 425 to slide radially along the blocking rod 423. When compressed air enters the pneumatic push rod 426 of the pneumatic centering device 42 through the centering guide 415, it pushes the pneumatic push rod 426 to extend, causing all the centering arc blocks 425 to synchronously retract towards the center and clamp the outer ring of the locking post 33, ensuring that the axis of the release bearing 7 coincides with the axis of the output end of the variable speed motor 6.

[0023] The pneumatic fastening device 44 includes a fastening cylinder 441, which is connected to a fastening conduit 414. The bottom of the fastening cylinder 441 is connected to a locking pin 33. The piston of the fastening cylinder 441 is connected to one end of a push rod, and the other end of the push rod is connected to the lower end of a telescopic column 443. The telescopic column 443 is slidably connected to the fastening cylinder 441. When the first control valve 4133 of the integrated control valve 413 is opened, compressed air enters the lower chamber of the fastening cylinder 441 through the fastening conduit 414, pushing the piston 442 and the connected push rod upward. The top of the push rod contacts the lower end of the telescopic column 443 through its arc surface, converting the vertical thrust into a radial expansion force, causing the telescopic column 443 to extend outward along the guide groove of the fastening cylinder 441. Finally, a radial clamping force is formed at the upper end of the telescopic column 443, locking the inner ring of the release bearing. It can also lock release bearings of different sizes.

[0024] The angle-adjusting impact device 43 includes a first stabilizing ring plate 431 and a second stabilizing ring plate 432. The outer rings of the first stabilizing ring plate 431 and the second stabilizing ring plate 432 are connected to the base 1. The first stabilizing ring plate 431 and the second stabilizing ring plate 432 are connected to both ends of a plurality of connecting rods arranged in a ring at equal intervals. An annular groove is opened between the first stabilizing ring plate 431 and the second stabilizing ring plate 432. The annular groove is slidably connected to the mounting base plate of the booster cylinder 433. The booster cylinder 433 is connected to one end of the connecting block 435. The output end of the booster cylinder 433 impacts the surface of the locking post 33 under the action of the pneumatic control device 41. The other end of the booster cylinder 433 is connected to the impact hose 416. The angle-adjusting impact device 43 achieves multi-angle eccentric impact by sliding the booster cylinder 433 in the annular guide rail. When compressed air is introduced into the impact hose 416, the booster cylinder 433 converts the air pressure into high-pressure hydraulic oil to drive the piston, generating an instantaneous impact force that acts on the surface of the retaining pin 33. The angle motor 437 drives the ring gear 434, which in turn drives the connecting block 435, causing the booster cylinder 433 to slide along the annular grooves of the first stabilizing ring plate 431 and the second stabilizing ring plate 432. This precisely adjusts the angle between the impact line and the center of the release bearing 7, achieving a 360-degree adjustable eccentric impact simulation. The adjustable impact device 43 allows for adjustable angle impact simulation of the clutch during actual operation. Under different off-center loading conditions, the dustproof performance of the release bearing 7 under non-ideal stress conditions can be tested; at the same time, it can also provide high-energy instantaneous impact. The booster cylinder 433 can adjust the hydraulic impact force to ensure that the impact energy is sufficient to trigger the potential seal failure of the release bearing 7. The frame structure formed by the first stabilizing ring plate 431, the second stabilizing ring plate 432 and the connecting rod maintains the overall rigidity of the device when subjected to repeated impacts, ensuring the reliability of the test data. Finally, the annular guide rail design allows impact to be applied at any position on the circumference of the bearing, which can systematically evaluate the full circumferential sealing performance of the bearing.

[0025] The other end of the connecting block 435 is connected to the inner ring of the ring gear 434. One side of the ring gear 434 is rotatably connected to the second stabilizing ring plate 432. The ring gear 434 meshes with the angle gear 436, which is driven to rotate by the angle motor 437. The angle motor 437 is connected to the slide 2. The angle motor 437 drives the angle gear 436 to rotate, and through the meshing transmission of the angle gear 436, the ring gear 434 is driven to make precise circular motion on the second stabilizing ring plate 432. The connecting block is fixed to the inner ring of the ring gear 434. 435 rotates synchronously, causing the booster cylinder 433 connected to its front end to generate angular displacement along the annular groove of the first stabilizing ring plate 431 and the second stabilizing ring plate 432, thereby changing the action angle between the output end of the booster cylinder 433 and the locking post 33, achieving precise adjustment of the impact position in the 0-360° full circumference. The angle motor 437 has higher angle accuracy than manual positioning, while ensuring the consistency of the impact angle each time, eliminating manual adjustment errors, and the programmed control can be seamlessly integrated with the automated testing process of the whole machine.

[0026] The feeding device 3 includes a force-controlled electric push rod 31. A chuck 32 is slidably connected to the output end of the force-controlled electric push rod 31. A locking pin 33 is movably connected to the chuck 32. One end of the locking pin 33 is driven by a centering impact device 4, and the other end is rotatably connected to a ball bearing 34. The outer ring of the chuck 32 is driven by the centering impact device 4. A pre-compression elastic element 312 is sleeved on the output end of the force-controlled electric push rod 31. The force-controlled electric push rod 31 is slidably connected to symmetrically arranged stabilizing slide rods 313. The stabilizing slide rods 313 are slidably connected to the chuck 32. The feeding device 3 provides precise axial feed through the force-controlled electric push rod 31. When the booster cylinder 433 generates an impact, the impact force is transmitted through… The impact energy is transmitted through the chuck 33 to the chuck 32. At this time, the preload elastic element 312 absorbs the impact energy under compression, while the ball bearing 34 structure converts the axial impact into rolling friction. The stabilizing slide rod 313 bears the radial torque, forming a mechanical decoupling structure between the force-controlled electric push rod 31 and the impact load. This ensures that the force-controlled electric push rod 31 can withstand the axial pressure within the preset range. Meanwhile, since the outer ring of the release bearing 7 is fitted on the output end of the variable speed motor 6, it is at risk of instability when subjected to radial impact. The preload elastic element 312, through its continuous preload, pushes the chuck 32 and the entire transmission chain, always applying a stable axial clamping force to the release bearing 7. This clamping force forces the release bearing 7 to automatically reset after vibration and impact, suppressing its radial sway and ensuring that its inner ring always rotates stably around the output shaft center of the variable speed motor 6, thereby ensuring the smoothness of the test process and the accuracy of the data.

[0027] The inner ring of the push ring 51 is connected to the outer ring of the rubber sheet. The inner ring of the rubber sheet is fitted onto the outer ring of the locking post 33. The rubber sheet forms a reliable sealing layer on the outer ring of the rotating locking post 33, which can effectively prevent the high-speed dust ejected by the dust feeding device 5 from entering the precision mechanisms such as the feeding device 3 and the force-controlled electric push rod 31 behind through the gap between the locking post 33 and the push ring 51, thus protecting the core moving parts.

[0028] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A dustproof performance testing machine for clutch bearings, comprising a base (1), characterized in that: A slide block (2) is slidably connected to the middle position of the surface of the base (1). One end of the surface of the base (1) is connected to a horizontally arranged feeding device (3). The feeding device (3) is used to push the centering impact device (4) to move linearly. The centering impact device (4) is connected to the slide block (2). A release bearing (7) is sleeved on the end of the centering impact device (4). The outer ring of the release bearing (7) is sleeved on the inner ring of the output end of the variable speed motor (6). The variable speed motor (6) is connected to the base (1). A dust feeding device (5) is provided between the variable speed motor (6) and the centering impact device (4). The dust collection device (5) includes a transparent cylinder cover (52). The lower end of the transparent cylinder cover (52) is connected to a collection pipe (521), which is connected to a pipe. One side of the transparent cylinder cover (52) is connected to a push ring (51), and the other side of the transparent cylinder cover (52) is rotatably connected to the output end of a variable speed motor (6). The top of the transparent cylinder cover (52) is connected to the lower end of a dust inlet hood (53), and the upper end of the dust inlet hood (53) is connected to a triggering device. (58) One end of the triggering device (58) is connected to the feeding tank (59). The feeding tank (59) is filled with friction plate dust. The inner wall of the dust inlet hood (53) is connected to the end of the support frame (57). A bevel gear set (55) is installed at the bottom of the support frame (57). The bevel gear set (55) is connected to a fan (56). The output shaft of the variable speed motor (6) drives the bevel gear set (55) to rotate through the differential belt pulley set (54). The triggering device (58) includes a first feeding pipe (581) and a second feeding pipe (582). A control plate (586) is slidably connected between the first feeding pipe (581) and the second feeding pipe (582). The lower end of the control plate (586) is provided with a circular filter section that fits into the inner wall of the first feeding pipe (581) and the inner wall of the second feeding pipe (582). The opposite ends of the first feeding pipe (581) and the second feeding pipe (582) are respectively connected to the dust inlet hood (53) and the discharge tank (59). The control board (586) is connected to the bottom of the first sliding trigger block (584). The first sliding trigger block (584) is symmetrically equipped with telescopic elastic elements (585). The tops of the two telescopic elastic elements (585) are respectively connected to the first feeding pipe (581) and the second feeding pipe (582). The lower end of the first sliding trigger block (584) is slidably connected to the support slide (583). The support slide (583) is respectively connected to the first feeding pipe (581) and the second feeding pipe (582). The push ring (51) is connected to the slide (2). A second sliding trigger block (587) is fixedly mounted on the push ring (51). When the push ring (51) and the slide (2) slide synchronously, the second sliding trigger block (587) can squeeze the first sliding trigger block (584) to move upward.

2. The clutch bearing dustproof performance testing machine according to claim 1, characterized in that: The centering impact device (4) includes a pneumatic control device (41); The pneumatic control device (41) includes an air pump (411), which is connected to an integrated control valve (413). The integrated control valve (413) is drivenly connected to a stepper motor (412). The integrated control valve (413) is connected to one end of a fastening conduit (414), one end of an impact hose (416), and one end of a centering conduit (415). The other end of the fastening conduit (414) is connected to a pneumatic fastening device (44). The other end of the impact hose (416) is connected to an angle-adjusting impact device (43). The other end of the centering conduit (415) is connected to a pneumatic centering device (42). The integrated control valve (413) includes a first control valve (4133), which is connected to one end of the fastening conduit (414), one end of the impact hose (416), and one end of the centering conduit (415). The valve stem of the first control valve (4133) is drivenly connected to one side of the first gear (4131), and the other side of the first gear (4131) is drivenly connected to the output end of the stepper motor (412). The stepper motor (412) is connected to the slide (2). The centering conduit (415) is equipped with a second exhaust valve (4134), and the valve stem of the second exhaust valve (4134) is drivenly connected to the second gear (4132). The second gear (4132) meshes with the first gear (4131).

3. The clutch bearing dustproof performance testing machine according to claim 2, characterized in that: The pneumatic centering device (42) includes a first half-ring (421), a second half-ring (422), and a feed ring plate; Multiple blocking bars (423) are installed equidistantly in a ring between the first half-ring (421) and the second half-ring (422). Each blocking bar (423) contacts the arc surface of a centering arc block (425). Each centering arc block (425) contacts the outer ring of a locking pin (33). The centering arc block (425) is rotatably connected to the feed ring plate (424). The feed ring plate (424) is rotatably connected to the first half-ring (421) and the second half-ring (422). The feed ring plate (424) is drivenly connected to the output end of the pneumatic push rod (426). The pneumatic push rod (426) is installed on the inner ring of the second half-ring (422). The pneumatic push rod (426) is connected to the other end of the centering guide tube (415). The outer ring of the second half-ring (422) is connected to the slide (2).

4. The clutch bearing dustproof performance testing machine according to claim 3, characterized in that: The pneumatic fastening device (44) includes a fastening cylinder (441), which is connected to a fastening conduit (414). The bottom of the fastening cylinder (441) is connected to a locking pin (33). The piston of the fastening cylinder (441) is connected to one end of a push rod, and the other end of the push rod is connected to the lower end of a telescopic column (443). The telescopic column (443) is slidably connected to the fastening cylinder (441).

5. The clutch bearing dustproof performance testing machine according to claim 2, characterized in that: The angle-adjusting impact device (43) includes a first stabilizing ring plate (431) and a second stabilizing ring plate (432). The outer rings of the first stabilizing ring plate (431) and the second stabilizing ring plate (432) are connected to the base (1). The first stabilizing ring plate (431) and the second stabilizing ring plate (432) are connected to both ends of a plurality of connecting rods arranged in a ring at equal intervals. An annular groove is opened between the first stabilizing ring plate (431) and the second stabilizing ring plate (432). The annular groove is slidably connected to the mounting base plate of the booster cylinder (433). The booster cylinder (433) is connected to one end of the connecting block (435). The output end of the booster cylinder (433) impacts the surface of the locking post (33) under the action of the pneumatic control device (41). The other end of the booster cylinder (433) is connected to the impact hose (416).

6. The clutch bearing dustproof performance testing machine according to claim 5, characterized in that: The other end of the connecting block (435) is connected to the inner ring of the ring gear (434). One side of the ring gear (434) is rotatably connected to the second stabilizing ring plate (432). The ring gear (434) meshes with the angle gear (436). The angle gear (436) is driven to rotate by the angle motor (437). The angle motor (437) is connected to the slide (2).

7. The clutch bearing dustproof performance testing machine according to claim 1, characterized in that: The feeding device (3) includes a force-controlled electric push rod (31), the output end of which is slidably connected to a chuck (32), the chuck (32) is movably connected to a locking pin (33), one end of which is driven to a centering impact device (4), the other end of which is rotatably connected to a ball bearing (34), the outer ring of which is driven to a centering impact device (4), the output end of which is fitted with a pre-compression elastic element (312), the force-controlled electric push rod (31) is slidably connected to a symmetrically arranged stabilizing slide rod (313), and the stabilizing slide rod (313) is slidably connected to the chuck (32).

8. The clutch bearing dustproof performance testing machine according to claim 1, characterized in that: The inner ring of the push ring (51) is connected to the outer ring of the rubber sheet, and the inner ring of the rubber sheet is fitted onto the outer ring of the locking post (33).

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