An abrasion resistance detection device for electric vehicle brake pads

Abstract

The present invention discloses a wear resistance detection device for electric vehicle brake pads, which relates to the technical field of brake pad detection; it includes a base, a guide plate is arranged on the base, and a mounting frame is fixedly arranged. A friction disc is rotatably arranged on the mounting frame. A spraying part is arranged below the mounting frame for spraying maintenance oil on the end face of the mounting frame. A detection part is arranged on the top of the mounting frame for detecting defects and flaws on the end face of the friction disc; a lead screw assembly is arranged on the base, and two mounting parts are slidably arranged on the lead screw assembly for positioning and mounting the detection samples to be detected; the mounting part includes a sliding seat slidably arranged on the lead screw assembly, a rotating frame is rotatably arranged on the sliding seat, a plurality of limiting platforms are arranged in a circular array on the circumference of the rotating frame, and limiting parts are arranged on the limiting platforms; the present invention is convenient for synchronously detecting multiple samples and is convenient for installation and disassembly, so as to improve the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of brake pad detection, and particularly relates to a device for detecting the wear resistance of electric vehicle brake pads. Background Art

[0002] Electric vehicles are common means of transportation, generally driven by electricity, and are an important part of the development of the new energy industry; electric vehicles include electric cars, electric bicycles, and electric motorcycles, etc. No matter which type of electric vehicle, it is equipped with a braking system. Currently, the general braking mechanism is to use friction for deceleration, so there is a product called brake pads. Generally, it is set in the area of the traveling wheels of the vehicle. The component that works together with the brake pads is the brake disc. By contacting and rubbing the brake disc with the brake pads, deceleration is achieved; to ensure driving safety, the wear resistance of the brake pads is crucial. In large-scale production of brake pads, the detection of the wear resistance of brake pads is an indispensable process. Currently, the functions of brake pad detection devices are relatively single, and it is not convenient to improve the detection efficiency. For example, during sampling detection, multiple samples need to be detected simultaneously to improve the detection efficiency. The installation of brake pads is also a cumbersome operation; based on this, the present invention proposes a detection device that is convenient for synchronously detecting multiple samples and is also convenient for installation and disassembly, thereby improving the detection efficiency. Summary of the Invention

[0003] Aiming at the above technical problems, the present invention is convenient for synchronously detecting multiple samples and is also convenient for installation and disassembly, thereby improving the detection efficiency.

[0004] The technical solution adopted by the present invention is as follows: A device for detecting the wear resistance of electric vehicle brake pads includes a base, a guide plate is arranged on the base, and a mounting frame is fixedly arranged. A friction disc is rotatably arranged on the mounting frame. Below the mounting frame, there is a spraying member for spraying maintenance oil on the end face of the mounting frame. On the top of the mounting frame, there is a detecting member for detecting defects and flaws on the end face of the friction disc; on the base, there is a lead screw assembly, and two mounting members are slidably arranged on the lead screw assembly for positioning and mounting the detection samples to be detected; the mounting member includes a sliding seat slidably arranged on the lead screw assembly. A rotating frame is rotatably arranged on the sliding seat. On the circumference of the rotating frame, a plurality of limiting platforms are arranged in a circular array. A limiting member is arranged on the limiting platform. The limiting member includes a limiting rod fixedly arranged on the limiting platform. A fastening portion is slidably arranged at the end of the limiting rod for limiting and fixing the detection sample. A pressing plate is slidably arranged at one end of the limiting rod, and the pressing plate is used to push the fastening portion to move; at both ends of the base, there is a removing member for removing the detection sample; the removing member includes a first ejector rod and a top cylinder slidably mounted on the base. A second ejector rod is telescopically arranged on the top cylinder.

[0005] As a preferred solution, the spraying part includes a spraying box arranged on the base. A control electric cylinder I is arranged on the spraying box. A spraying part is arranged on the telescopic rod of the control electric cylinder I. The spraying part is communicated with the spraying box. The spraying part is controlled to move by the control electric cylinder I so as to spray the maintenance oil on the end face of the friction disc.

[0006] As a preferred solution, the detecting part includes an analysis system and a control electric cylinder II fixedly arranged on the top of the mounting rack. A visual detecting part is arranged on the telescopic rod of the control electric cylinder II. Defects on the end face of the friction disc are detected by the visual detecting part.

[0007] As a preferred solution, a rotating motor is fixedly arranged on the mounting rack. A rotating gear is arranged on the output shaft of the rotating motor. The rotating gear and the friction disc form a gear pair.

[0008] As a preferred solution, the lead screw assembly includes a position motor fixedly arranged at one end of the base and a lead screw rotatably arranged on the base. A guide rod is also fixedly arranged on the base; the position motor is used to drive the lead screw; the guide rod and the lead screw penetrate through the inner side of the friction disc. A sliding seat on the mounting part is slidably arranged on the guide rod and the lead screw, and the sliding seat and the lead screw form a screw pair.

[0009] As a preferred solution, the mounting part includes a commutation motor fixedly arranged on the end face of the sliding seat. A commutation gear is arranged on the output shaft of the commutation motor. The commutation gear and the commutation frame form a gear pair; fixing grooves are formed on the circumferences of the sliding seat and the commutation frame. A fixing oil cylinder is fixedly arranged on the end face of the sliding seat. A fixing part is arranged on the telescopic rod of the fixing oil cylinder. When the fixing part cooperates with the fixing grooves on the commutation frame and the sliding seat at the same time, the commutation frame is fixed.

[0010] As a preferred solution, a pushing hole is formed on the limiting table. A first ejector rod on the removing part passes through the pushing hole to remove the test sample; the removing part includes a removing moving electric cylinder fixedly arranged on the base. A moving frame is fixedly arranged on the telescopic rod of the removing moving electric cylinder. The first ejector rod and the ejector cylinder are fixedly arranged on the moving frame; a first telescopic spring for providing elastic force is connected between the second ejector rod and the ejector cylinder. The second ejector rod is used to control the limiting state of the limiting part on the test sample.

[0011] As a preferred solution, the limiting part includes a push rod fixedly connected to the end face of the pressing plate. A pushing part is arranged at one end of the push rod. A contact part is arranged on the buckling part. The contact part is pushed by the pushing part to move radially. A second telescopic spring for providing elastic force is connected between the buckling part and the inside of the limiting rod; a pressing plate spring for providing elastic force is connected between the pressing plate and the end face of the pressing plate. The second ejector rod pushes the pressing plate to make the pressing plate slide.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: (1) In the present invention, the test sample is installed on the limiting platform. During installation, the test sample is positioned and fixed through the buckling part, that is, the operator can achieve the positioning and installation of the test sample only by pressing operation. Further, the test sample can be installed in all directions to achieve synchronous detection; (2) In the present invention, it is convenient to disassemble the test sample. Specifically, the limitation on the test sample is released through the removal part, and the limiting platforms in all directions will move to the position where the removal part is located to complete the removal; (3) In the present invention, for the friction disc, surface quality detection and subsequent maintenance can be carried out. The quality defects on the end face of the friction disc are detected through the visual detection part for timely repair and replacement to ensure the reliability of the detection results; The maintenance oil is sprayed onto the end face of the friction disc through the spraying part, and the maintenance is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the removal part of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the friction disc of the present invention.

[0016] Figure 4 It is an installation schematic diagram of the installation part of the present invention.

[0017] Figure 5 It is an installation schematic diagram of the transposition frame and the test sample of the present invention.

[0018] Figure 6 It is an installation schematic diagram of the limiting part of the present invention.

[0019] Figure 7 It is a schematic diagram of the end structure of the limiting part of the present invention.

[0020] Figure 8 It is a schematic diagram of the internal structure of the limiting part of the present invention.

[0021] Figure 9 It is another angle schematic diagram of the internal structure of the limiting part of the present invention.

[0022] Reference numerals: 1 - base; 2 - guide plate; 3 - mounting bracket; 4 - spraying box; 5 - control cylinder 1; 6 - analysis system; 7 - control cylinder 2; 8 - removal moving cylinder; 9 - moving bracket; 10 - ejector rod 1; 11 - ejector barrel; 12 - ejector rod 2; 13 - telescopic spring 1; 14 - position motor; 15 - guide rod; 16 - lead screw; 17 - friction disc; 18 - rotation motor; 19 - rotation gear; 20 - sliding seat; 21 - transposition motor; 22 - transposition gear; 23 - fixed oil cylinder; 24 - transposition bracket; 25 - limit table; 26 - test sample; 27 - limit rod; 28 - pressing plate; 29 - pressing plate spring; 30 - push rod; 31 - fastening part; 32 - telescopic spring 2; 33 - contact part. Detailed implementation mode

[0023] Example: As Figures 1 to 9 shown, a guide plate 2 is arranged on the base 1, and a mounting bracket 3 is fixedly arranged; a friction disc 17 is rotatably arranged on the mounting bracket 3, and a spraying part is arranged below the mounting bracket 3 for spraying maintenance oil on the end face of the mounting bracket 3. A detecting part is arranged on the top of the mounting bracket 3 for detecting defects and flaws on the end face of the friction disc 17, such as surface quality problems like cracking and pits; the spraying part includes a spraying box 4 arranged on the base 1, a control cylinder 1 5 is arranged on the spraying box 4, a spraying part is arranged on the telescopic rod of the control cylinder 1 5, and the spraying part is communicated with the spraying box 4. The control cylinder 1 5 is used to control the movement of the spraying part to spray the maintenance oil on the end face of the friction disc 17; the detecting part includes an analysis system 6 and a control cylinder 2 7 fixedly arranged on the top of the mounting bracket 3, and a visual detecting part is arranged on the telescopic rod of the control cylinder 2 7 to detect defects and flaws on the end face of the friction disc 17; a rotation motor 18 is fixedly arranged on the mounting bracket 3, a rotation gear 19 is arranged on the output shaft of the rotation motor 18, and the rotation gear 19 and the friction disc 17 form a gear pair.

[0024] A lead screw assembly is provided on the base 1. Two mounting members are slidably provided on the lead screw assembly for positioning and mounting a test sample 26 to be tested. The lead screw assembly includes a position motor 14 fixedly provided at one end of the base 1 and a lead screw 16 rotatably provided on the base 1. A guide rod 15 is also fixedly provided on the base 1. The position motor 14 is used to drive the lead screw 16. The guide rod 15 and the lead screw 16 penetrate through the inner side of the friction disc 17. The mounting member includes a slide seat 20 slidably provided on the lead screw assembly. A rotation frame 24 is rotatably provided on the slide seat 20. A plurality of limiting platforms 25 are arranged in a circular array on the circumference of the rotation frame 24. Limiting members are provided on the limiting platforms 25. The slide seat 20 on the mounting member is slidably provided on the guide rod 15 and the lead screw 16, and the slide seat 20 and the lead screw 16 form a screw pair. The mounting member further includes a rotation motor 21 fixedly provided on the end face of the slide seat 20. A rotation gear 22 is provided on the output shaft of the rotation motor 21. The rotation gear 22 and the rotation frame 24 form a gear pair. Fixing grooves are formed on the circumferences of the slide seat 20 and the rotation frame 24. A fixing oil cylinder 23 is fixedly provided on the end face of the slide seat 20. A fixing portion is provided on the telescopic rod of the fixing oil cylinder 23. When the fixing portion cooperates with the fixing grooves on the rotation frame 24 and the slide seat 20 at the same time, the rotation frame 24 is fixed.

[0025] The limiting member includes a limiting rod 27 fixedly provided on the limiting platform 25. A fastening portion 31 is slidably provided at the end of the limiting rod 27 for limiting and fixing the test sample 26. A pressing plate 28 is slidably provided at one end of the limiting rod 27. The pressing plate 28 is used to push the fastening portion 31 to move. Demounting members are provided at both ends of the base 1 for demounting the test sample 26. The demounting member includes a first ejector rod 10 and a top cylinder 11 slidably mounted on the base 1. A second ejector rod 12 is telescopically provided on the top cylinder 11. A push hole is formed on the limiting platform 25. The first ejector rod 10 on the demounting member passes through the push hole to demount the test sample 26. The demounting member includes a demounting moving electric cylinder 8 fixedly provided on the base 1. A moving frame 9 is fixedly provided on the telescopic rod of the demounting moving electric cylinder 8. The first ejector rod 10 and the top cylinder 11 are fixedly provided on the moving frame 9. A first telescopic spring 13 for providing elastic force is connected between the second ejector rod 12 and the top cylinder 11. The second ejector rod 12 is used to control the limiting state of the limiting member on the test sample 26. The limiting member includes a push rod 30 fixedly connected to the end face of the pressing plate 28. A pushing portion is provided at one end of the push rod 30. A contact portion 33 is provided on the fastening portion 31. The contact portion 33 is pushed by the pushing portion to move radially. A second telescopic spring 32 for providing elastic force is connected between the fastening portion 31 and the inside of the limiting rod 27. A pressing plate spring 29 for providing elastic force is connected between the pressing plate 28 and the end face of the pressing plate 28. The second ejector rod 12 pushes the pressing plate 28 to make the pressing plate 28 slide.

[0026] Working principle of the present invention: For a large number of products, sampling inspection is required. In this embodiment, the wear resistance of the sampled products can be detected simultaneously. Specifically, the test sample is installed on the limit platform 25. During installation, the test sample is positioned and fixed through the fastening portion 31, that is, the operator can achieve the positioning and installation of the test sample only by pressing operation. Further, the test sample can be installed in all directions to achieve synchronous detection.

[0027] By operating the rotation motor 18, under the gear drive, the friction disc 17 rotates, which replaces the brake disc of the electric vehicle. For the friction disc 17, surface quality inspection and subsequent maintenance can be carried out. Specifically, the visual inspection part is controlled to move by the electric cylinder two 7 to detect the quality defects on the end face of the friction disc 17 for timely repair and replacement (the analysis system 6 performs result analysis) to ensure the reliability of the detection results. The maintenance oil is transmitted through the spraying box 4, and the spraying part is controlled to move by the electric cylinder one 5, and finally released through the spraying part to spray the maintenance oil onto the end face of the friction disc 17.

[0028] During the detection, by operating the position motor 14, the lead screw 16 rotates, and then the slide seat 20 moves, so that the test sample approaches the friction disc 17 and contacts the end face of the friction disc 17. The rotation speed of the friction disc 17 can be further controlled to simulate the driving speed of the electric vehicle, and the movement of the slide seat 20 can also be controlled, that is, the contact state between the test sample and the friction disc 17, such as continuous contact, intermittent contact, etc., to simulate the braking state.

[0029] During the detection, the fixing part on the telescopic rod of the fixing oil cylinder 23 cooperates with the fixing grooves on the transposition frame 24 and the slide seat 20 at the same time to ensure the stable state during the detection. After the detection is completed, for the disassembly of the test sample, the slide seat 20 can be controlled to move, so that the limit platform 25 moves towards the position where the removal part is located. At the preset position, the moving frame 9 is controlled to move by the removal moving electric cylinder 8, and the ejector rod one 10 and the ejector cylinder 11 also move. The ejector rod two 12 presses the pressing plate 28, so that the pressing plate 28 and the push rod 30 move, and the pressing plate spring 29 is compressed. The pushing part at one end of the push rod 30 pushes the contact part 33, so that the fastening part 31 contracts towards the inside of the limit rod 27, and then the limit on the test sample is released. After the limit is released, the ejector rod one 10 continues to move, and the ejector rod two 12 moves relative to the ejector cylinder 11, that is, it contracts into the ejector cylinder 11, and the ejector rod one 10 passes through the push hole on the limit platform 25 to push the test sample out of the limit platform 25, and then it falls onto the guide plate 2. Further, by operating the transposition motor 21, the transposition frame 24 rotates, and the limit platforms 25 in all directions will be transferred to the position where the removal part is located to complete the removal.

Claims

1. A device for testing the wear resistance of brake pads for electric vehicles, comprising a base (1), a guide plate (2) being arranged on the base (1), and a mounting frame (3) being fixedly arranged thereon, characterized in that: A friction disc (17) is rotatably mounted on the mounting frame (3); a spraying member is disposed below the mounting frame (3) for spraying maintenance oil onto the end surface of the mounting frame (3); a detection member is disposed on the top of the mounting frame (3) for detecting defects on the end surface of the friction disc (17); a screw assembly is disposed on the base (1); two mounting members are slidably disposed on the screw assembly for positioning and mounting a test sample (26) to be tested; the mounting member comprises a slide seat (20) slidably disposed on the screw assembly; a transposition frame (24) is rotatably disposed on the slide seat (20); and a limiting stage (26) is arranged in a circular array on the circumference of the transposition frame (24). 5), a limiting member is arranged on the limiting platform (25), the limiting member comprises a limiting rod (27) fixedly arranged on the limiting platform (25), a buckling portion (31) is slidably arranged at the end of the limiting rod (27) for limiting and fixing the test sample (26), a pressing plate (28) is slidably arranged at one end of the limiting rod (27), the pressing plate (28) is used to push the buckling portion (31) to move; a removal member is arranged at both ends of the base (1) for removing the test sample (26); the removal member comprises a push rod 1 (10) and a push cylinder (11) slidably mounted on the base (1), and a push rod 2 (12) is telescopically arranged on the push cylinder (11); The spraying part comprises a spraying box (4) arranged on the base (1), a control electric cylinder (5) being arranged on the spraying box (4), a spraying part being arranged on the telescopic rod of the control electric cylinder (5), the spraying part being connected to the spraying box (4), and the control electric cylinder (5) controlling the movement of the spraying part so as to spray the maintenance oil onto the end surface of the friction plate (17); The detection component comprises an analysis system (6) fixedly arranged on the top of the mounting frame (3) and a second control electric cylinder (7), wherein a visual detection unit is arranged on the telescopic rod of the second control electric cylinder (7), and defects on the end surface of the friction disk (17) are detected by the visual detection unit; The mounting member comprises a transposition motor (21) fixedly arranged on the end surface of the slide (20), a transposition gear (22) being arranged on the output shaft of the transposition motor (21), and the transposition gear (22) and the transposition frame (24) forming a gear pair; a fixing groove is provided on the circumference of the slide (20) and the transposition frame (24), a fixing cylinder (23) is fixedly arranged on the end surface of the slide (20), and a fixing part is provided on the telescopic rod of the fixing cylinder (23), and when the fixing part cooperates with the fixing grooves on the transposition frame (24) and the slide (20), the transposition frame (24) is fixed; The limit platform (25) is provided with a push hole, and a push rod (10) on the removal piece passes through the push hole to remove the test sample (26); the removal piece comprises a removal movable electric cylinder (8) fixedly arranged on the base (1), a movable frame (9) fixedly arranged on the telescopic rod of the removal movable electric cylinder (8), and the push rod (10) and the push tube (11) are fixedly arranged on the movable frame (9); a telescopic spring (13) for providing elastic force is connected between the push rod (12) and the push tube (11), and the push rod (12) is used to control the limiting state of the limit piece on the test sample (26); The limiting member comprises a push rod (30) fixedly connected to the end surface of the pressure plate (28), one end of the push rod (30) is provided with a pushing portion, the buckling portion (31) is provided with a contact portion (33), the contact portion (33) is pushed by the pushing portion to move radially, and a second telescopic spring (32) for providing elastic force is connected between the buckling portion (31) and the inside of the limiting rod (27); a pressure plate spring (29) for providing elastic force is connected between the pressure plate (28) and the end surface of the pressure plate (28), and the second push rod (12) pushes the pressure plate (28) to make the pressure plate (28) slide.

2. The wear resistance testing device for electric vehicle brake pads according to claim 1 is characterized in that: A rotating motor (18) is fixedly mounted on the mounting frame (3), a rotating gear (19) is mounted on the output shaft of the rotating motor (18), and the rotating gear (19) and the friction plate (17) form a gear pair.

3. The wear resistance testing device for electric vehicle brake pads according to claim 1 is characterized in that: The screw assembly comprises a position motor (14) fixedly arranged at one end of a base (1), and a screw (16) rotatably arranged on the base (1), and a guide rod (15) is also fixedly arranged on the base (1); the position motor (14) is used to drive the screw (16); the guide rod (15) and the screw (16) penetrate the inner side of the friction disk (17); a slide seat (20) on the mounting member is slidably arranged on the guide rod (15) and the screw (16), and the slide seat (20) and the screw (16) form a spiral pair.

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