Brake torque measuring apparatus and method

Abstract

The application relates to the technical field of brake detection, in particular to a brake torque measuring device and method, which comprises a workbench, the top of the workbench is fixedly connected with an H-shaped support table; a power component is arranged at the top of the H-shaped support table, and the power component is used for controlling the size of torque; and test components are arranged on the left and right sides of the power component. In the application, the two brakes on the left and right sides are detected through the rotation of a test wheel, the rotation and locking of the test wheel are realized through the power-on and power-off of the brakes, the force received by the third rotating rod is fed back to a display instrument through a torque sensor, the detection of the brake torque is completed, the U-shaped limiting plate is arranged to limit the horizontal reciprocating movement of the moving frame, the L-shaped plate drives the horizontal reciprocating movement of the static electricity removing plate, the static electricity on the surface of the cleaning sleeve is treated, and the detection precision of the brake is improved.

Description

Technical Field

[0001] This invention relates to the field of brake testing technology, specifically to a brake torque measuring device and method. Background Technology

[0002] A brake is a mechanical part that stops or slows down moving parts in a machine. Brake torque measurement requires the use of brake torque measuring equipment.

[0003] Current methods for measuring brake torque mainly involve connecting the motor directly to the shaft and using a speed and torque sensor to detect the brake torque. However, each test can only be performed on one brake at a time, and the detection power is limited, which greatly reduces the detection efficiency. Furthermore, friction during brake measurement generates static electricity, affecting the accuracy of the measurement. Summary of the Invention

[0004] Therefore, the present invention provides a brake torque measuring device and method to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: a brake torque measuring device, including a worktable, wherein an H-shaped support platform is fixedly connected to the top of the worktable;

[0006] A power component is provided on the top of the H-shaped support platform, and the power component is used to control the magnitude of the torque;

[0007] The test components are provided on both the left and right sides of the power component, and the test components are used to test the braking torque.

[0008] As a preferred embodiment of the present invention, bearing seats are fixedly connected to both the left and right sides of the top of the H-shaped support platform. The power component includes a protective box. A first connecting hole is opened on the top of the protective box. A first rotating rod is rotatably connected to the wall of the first connecting hole. A second rotating rod is fixedly connected to the bottom of the first rotating rod. A first bevel gear is fixedly connected to the bottom of the second rotating rod. A second connecting hole is opened through the left side of the protective box.

[0009] The testing component includes an I-beam frame. The top of the workbench is fixedly connected to the bottom of the I-beam frame. A third rotating rod is rotatably connected to the inner wall of the bearing seat. A second bevel gear is fixedly connected to the end of the third rotating rod near the protective box. A test cylinder is fixedly connected to the top of the I-beam frame. A ring plate is fixedly connected to the side of the test cylinder near the protective box. The inner wall of the ring plate is rotatably connected to the surface of the third rotating rod. A through hole is opened through one side of the ring plate. A fourth rotating rod is rotatably connected to the inner wall of the through hole. A driving gear is fixedly fitted on the surface of the third rotating rod. A driven gear is fixedly fitted on the surface of the fourth rotating rod. The driving gear and the driven gear mesh. A cleaning sleeve is fixedly fitted on the surface of the fourth rotating rod. A cam is fixedly fitted on the surface of the fourth rotating rod. U-shaped limiting plates are fixedly connected to the upper and lower sides inside the test cylinder. A moving frame is slidably fitted on the surface of the U-shaped limiting plate. A driven rod is fixedly connected to the side of the moving frame near the driving gear. One end of the driven rod abuts against the inner wall of the cam. A chip removal groove is opened at the bottom of the test cylinder.

[0010] As a preferred embodiment of the present invention, the bottom of the protective box is fixedly connected to the top of the H-shaped support platform, and the first connecting hole is connected to the interior of the protective box.

[0011] As a preferred embodiment of the present invention, a torque sensor is fixedly installed inside the protective box, the test terminal of the torque sensor is in contact with the surface of the first rotating rod, a servo motor is fixedly connected to the top of the protective box, the output end of the servo motor is fixedly connected to the top of the first rotating rod through a coupling, a controller is fixedly connected to the top of the workbench, the output end of the controller is electrically connected to the receiving end of the servo motor, and the output end of the controller is electrically connected to the receiving end of the torque sensor.

[0012] In a preferred embodiment of the present invention, the surface of the third rotating rod is rotatably connected to the inner wall of the second connecting hole, and the second bevel gear meshes with the first bevel gear.

[0013] As a preferred embodiment of the present invention, an L-shaped plate is fixedly connected to the outer surface of the movable frame, and an antistatic plate is fixedly connected to the side of the L-shaped plate near the drive gear, with the surface of the antistatic plate abutting against the surface of the cleaning sleeve.

[0014] In a preferred embodiment of the present invention, the number of driven gears is two, and the two driven gears are arranged in a circular array.

[0015] As a preferred embodiment of the present invention, a test wheel is fixedly sleeved on the surface of the third rotating rod, the surface of the test wheel abuts against the surface of the cleaning sleeve, and an installation groove is formed on the front surface of the test cylinder.

[0016] As a preferred embodiment of the present invention, a fixing plate is fixedly installed on the front surface of the test cylinder.

[0017] As a preferred embodiment of the present invention, the specific steps of using the brake torque measuring device are as follows:

[0018] S1. Fix the two brakes to the two fixing plates on the left and right sides. At this time, the test end of the brake passes through the mounting groove, so that the test end of the brake is in contact with the test wheel. By starting the servo motor, the servo motor rotates forward, thereby driving the first rotating rod to rotate forward. The torque sensor can monitor the torque, so that the controller can better control the output power of the servo motor. When the first rotating rod rotates, the second rotating rod will rotate synchronously, thereby driving the first bevel gear to rotate. This drives the second bevel gears on the left and right sides to rotate synchronously, causing the third rotating rod to rotate synchronously, causing the test wheel to rotate and the brake to be tested. The rotation and locking of the test wheel can be achieved by turning the brake on and off. The force on the third rotating rod is fed back to the display instrument through the torque sensor, thus completing the detection of the brake torque.

[0019] S2. While the brake torque is being detected, the third rotating rod rotates, which drives the drive gear to rotate, which in turn drives the driven gear to rotate. This causes the fourth rotating rod to drive the cam to rotate, and the fourth rotating rod to drive the cleaning sleeve to rotate. As the cleaning sleeve rotates, it treats the surface of the test wheel, making the brake locking result more accurate when the test wheel contacts the brake. When the cam rotates, it drives the driven rod to move left and right back and forth. Through the limitation of the U-shaped limit plate, the moving frame can move horizontally back and forth, causing the L-shaped plate to drive the antistatic plate to move horizontally back and forth, treating the static electricity on the surface of the cleaning sleeve and improving the detection accuracy of the brake.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] In this invention, the test wheel rotates to test the two brakes on the left and right sides. The rotation and locking of the test wheel are achieved by energizing and de-energizing the brakes. The force on the third rotating rod is fed back to the display instrument through the torque sensor to complete the detection of the brake torque. The U-shaped limit plate limits the movement of the moving frame, which in turn drives the L-shaped plate to move horizontally back and forth to treat the static electricity on the surface of the cleaning sleeve, thereby improving the detection accuracy of the brake. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the power component structure in this invention;

[0024] Figure 3 This is a schematic diagram of the test component structure in this invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the test component in this invention;

[0026] Figure 5 This is a partial structural diagram of the static elimination component in this invention;

[0027] Figure 6 This is an enlarged view of the structure at point A in this invention;

[0028] Figure 7 This is an enlarged view of the structure at point B in this invention;

[0029] Figure 8 This is an enlarged view of the structure at point C in this invention.

[0030] In the diagram: 1. Workbench; 2. Controller; 3. H-shaped support platform; 4. Power component; 5. Test component; 6. Bearing seat; 401. Protective box; 402. Servo motor; 403. First bevel gear; 404. Torque sensor; 405. Second rotating rod; 406. First rotating rod; 407. Second connecting hole; 408. First connecting hole; 501. Test cylinder; 502. Fixing plate; 503. Mounting slot; 504. I-beam frame; 505. Ring plate; 506. Through hole; 507. Third rotating rod; 508. Second bevel gear; 509. Fourth rotating rod; 510. Driving gear; 511. Driven gear; 512. L-shaped plate; 513. Cleaning sleeve; 514. Cam; 515. Moving frame; 516. U-shaped limit plate; 517. Driven rod; 518. Chip removal groove; 519. Test wheel; 520. Static elimination plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-8 The technical solution provided by this invention specifically includes the following embodiments:

[0033] Example 1: A brake torque measuring device includes a worktable 1, and an H-shaped support platform 3 is fixedly connected to the top of the worktable 1;

[0034] The top of the H-shaped support platform 3 is equipped with a power component 4, which is used to control the magnitude of the torque.

[0035] Test component 5 is provided on both the left and right sides of the power component 4. Test component 5 is used to test the brake torque.

[0036] Bearing seats 6 are fixedly connected to the left and right sides of the top of the H-shaped support platform 3. The power component 4 includes a protective box 401. A first connecting hole 408 is opened on the top of the protective box 401. A first rotating rod 406 is rotatably connected to the wall of the first connecting hole 408. A second rotating rod 405 is fixedly connected to the bottom of the first rotating rod 406. A first bevel gear 403 is fixedly connected to the bottom of the second rotating rod 405. A second connecting hole 407 is opened through the left side of the protective box 401.

[0037] Test component 5 includes an I-beam frame 504. The top of the workbench 1 is fixedly connected to the bottom of the I-beam frame 504. A third rotating rod 507 is rotatably connected to the inner wall of the bearing seat 6. A second bevel gear 508 is fixedly connected to one end of the third rotating rod 507 near the protective box 401. A test cylinder 501 is fixedly connected to the top of the I-beam frame 504. A ring plate 505 is fixedly connected to one side of the test cylinder 501 near the protective box 401. The inner wall of the ring plate 505 is rotatably connected to the surface of the third rotating rod 507. A through hole 506 is opened through one side of the ring plate 505. A fourth rotating rod 509 is rotatably connected to the inner wall of the through hole 506. A fixed sleeve is fitted on the surface of the third rotating rod 507. There is a drive gear 510, and a driven gear 511 is fixedly sleeved on the surface of the fourth rotating rod 509. The drive gear 510 and the driven gear 511 mesh with each other. A cleaning sleeve 513 is fixedly sleeved on the surface of the fourth rotating rod 509. A cam 514 is fixedly sleeved on the surface of the fourth rotating rod 509. U-shaped limiting plates 516 are fixedly connected to the upper and lower sides inside the test cylinder 501. A moving frame 515 is slidably sleeved on the surface of the U-shaped limiting plate 516. A driven rod 517 is fixedly connected to the side of the moving frame 515 near the drive gear 510. One end of the driven rod 517 abuts against the inner wall of the cam 514. A chip discharge groove 518 is opened at the bottom of the test cylinder 501.

[0038] By fixing the two brakes to the two fixing plates 502 on the left and right sides, the test ends of the brakes pass through the mounting slots 503, making the test ends of the brakes fit against the test wheel 519. By starting the servo motor 402, the servo motor 402 rotates forward, thereby driving the first rotating rod 406 to rotate forward. The torque sensor 404 can monitor the torque, allowing the controller 2 to better control the output power of the servo motor 402. As the first rotating rod 406 rotates, the second rotating rod 405 rotates synchronously, thereby driving the first bevel gear. The rotation of wheel 403 drives the second bevel gears 508 on both sides to rotate synchronously, causing the third rotating rod 507 to rotate synchronously, which in turn causes the test wheel 519 to rotate, thus testing the brake. The rotation and locking of the test wheel 519 are controlled by energizing and de-energizing the brake. The force on the third rotating rod 507 is fed back to the display instrument via torque sensor 404, completing the detection of the brake torque. The rotation of the third rotating rod 507 drives the drive gear 510 to rotate, which in turn drives the driven gear 511 to rotate, causing the fourth rotating rod 50... The cam 514 rotates, and the fourth rotating rod 509 rotates the cleaning sleeve 513. As the cleaning sleeve 513 rotates, it treats the surface of the test wheel 519. During use, the surface of the test wheel 519 generates static electricity due to friction with the brake, causing dust to adhere to its surface. The cleaning sleeve 513 removes this dust, resulting in a more accurate brake lock-up when the test wheel 519 contacts the brake. Meanwhile, the rotation of the cam 514 drives the driven rod 517 to... The moving frame 515 moves horizontally back and forth, limited by the U-shaped limiting plate 516. This causes the L-shaped plate 512 to drive the static elimination plate 520 to move horizontally back and forth. While cleaning the dust adsorbed on the surface of the test wheel 519, the cleaning sleeve 513 also discharges the static electricity on the surface of the test wheel 519. The static elimination plate 520 treats the static electricity on the surface of the cleaning sleeve 513, and at the same time, it also completes the treatment of static electricity on the surface of the test wheel 519. When the brake is locked, the influence of static electricity and dust is effectively reduced, and the detection accuracy of the brake is improved.

[0039] The cleaning sleeve 513 is made of conductive rubber. The conductive rubber can effectively conduct static electricity on the test wheel 519 to the static elimination plate 520, and can also remove dust adhering to the test wheel 519.

[0040] The static discharge plate 520 is a grounded arc-shaped scraper. The arc-shaped scraper can effectively clean the dust adsorbed on the surface of the cleaning sleeve 513. The grounding wire can conduct static electricity on the arc-shaped scraper, the test wheel 519 and the cleaning sleeve 513 to the ground, thereby completing the static electricity treatment.

[0041] The bottom of the protective box 401 is fixedly connected to the top of the H-shaped support platform 3, and the first connecting hole 408 is connected to the interior of the protective box 401.

[0042] A torque sensor 404 is fixedly installed inside the protective box 401. The test terminal of the torque sensor 404 is in contact with the surface of the first rotating rod 406. A servo motor 402 is fixedly connected to the top of the protective box 401. The output end of the servo motor 402 is fixedly connected to the top of the first rotating rod 406 through a coupling. A controller 2 is fixedly connected to the top of the workbench 1. The output end of the controller 2 is electrically connected to the receiving end of the servo motor 402. The output end of the controller 2 is also electrically connected to the receiving end of the torque sensor 404.

[0043] Torque sensors, also known as torque sensors, are divided into two main categories: dynamic and static. Dynamic torque sensors are also called torque sensors, torque-speed sensors, non-contact torque sensors, and rotary torque sensors. Torque sensors detect torsional torque on various rotating or non-rotating mechanical parts. They convert the physical change in torque into a precise electrical signal. Torque sensors can be used in the manufacture of viscometers and electric torque wrenches, offering advantages such as high accuracy, fast frequency response, high reliability, and long lifespan.

[0044] The surface of the third rotating rod 507 is rotatably connected to the inner wall of the second connecting hole 407, and the second bevel gear 508 meshes with the first bevel gear 403.

[0045] An L-shaped plate 512 is fixedly connected to the outer surface of the movable frame 515. An antistatic plate 520 is fixedly connected to the side of the L-shaped plate 512 near the drive gear 510. The surface of the antistatic plate 520 abuts against the surface of the cleaning sleeve 513.

[0046] The 520 static eliminator is a type of static eliminator that works on the following principle. It consists of a high-voltage power generator and a discharge electrode. It ionizes the air into a large number of positive and negative ions through high-voltage corona discharge at the tip. Then, the wind blows the large number of positive and negative ions onto the surface of the object to neutralize the static electricity, or the static eliminator can be placed directly close to the surface of the object to neutralize the static electricity.

[0047] There are two driven gears 511, which are arranged in a circular array.

[0048] The surface of the third rotating rod 507 is fixedly fitted with a test wheel 519, the surface of the test wheel 519 abuts against the surface of the cleaning sleeve 513, and the front surface of the test cylinder 501 is provided with an installation groove 503.

[0049] A fixing plate 502 is fixedly installed on the front surface of the test cylinder 501.

[0050] Example 2: A method for measuring brake torque, the specific steps of which are as follows:

[0051] S1. Fix the two brakes on the two fixing plates 502 on the left and right sides. At this time, the test end of the brake passes through the mounting groove 503, so that the test end of the brake is in contact with the test wheel 519. By starting the servo motor 402, the servo motor 402 rotates forward, thereby driving the first rotating rod 406 to rotate forward. The torque sensor 404 can monitor the torque, so that the controller 2 can better control the output power of the servo motor 402. When the first rotating rod 406 rotates, the second rotating rod 405 will rotate synchronously, thereby driving the first bevel gear 403 to rotate, which in turn drives the second bevel gears 508 on the left and right sides to rotate synchronously, causing the third rotating rod 507 to rotate synchronously, causing the test wheel 519 to rotate, and the brake is tested. The rotation and locking of the test wheel 519 are achieved by turning the brake on and off. The force on the third rotating rod 507 is fed back to the display instrument through the torque sensor 404, completing the detection of the brake torque.

[0052] S2. While the brake torque is being detected, the third rotating rod 507 rotates, which drives the driving gear 510 to rotate, thereby driving the driven gear 511 to rotate. This causes the fourth rotating rod 509 to drive the cam 514 to rotate, and the fourth rotating rod 509 to drive the cleaning sleeve 513 to rotate. As the cleaning sleeve 513 rotates, it treats the surface of the test wheel 519, making the brake locking result more accurate when the test wheel 519 contacts the brake. When the cam 514 rotates, it drives the driven rod 517 to move back and forth. Through the limitation of the U-shaped limit plate 516, the moving frame 515 can move horizontally back and forth, causing the L-shaped plate 512 to drive the antistatic plate 520 to move horizontally back and forth, treating the static electricity on the surface of the cleaning sleeve 513 and improving the detection accuracy of the brake.

[0053] This invention discloses a brake torque measuring device and method. During operation, two brakes are fixed to two mounting plates 502 on the left and right sides. The test ends of the brakes pass through mounting slots 503, making them contact the test wheel 519. The servo motor 402 is activated, causing it to rotate forward, which in turn drives the first rotating rod 406 to rotate forward. A torque sensor 404 monitors the torque, allowing the controller 2 to better control the output power of the servo motor 402. Simultaneously, the rotation of the first rotating rod 406 causes the second rotating rod... 405 rotates synchronously, thereby driving the first bevel gear 403 to rotate, which in turn drives the second bevel gears 508 on both sides to rotate synchronously, causing the third rotating rod 507 to rotate synchronously, and causing the test wheel 519 to rotate. This allows for brake detection. The rotation and locking of the test wheel 519 are controlled by energizing and de-energizing the brake. The force on the third rotating rod 507 is fed back to the display instrument via the torque sensor 404, completing the detection of the brake torque. The rotation of the third rotating rod 507 drives the driving gear 510 to rotate, which in turn drives the driven gear 51. 1. Rotation causes the fourth rotating rod 509 to drive the cam 514 to rotate, which in turn drives the cleaning sleeve 513 to rotate. Simultaneously, the cleaning sleeve 513 treats the surface of the test wheel 519. During use, the surface of the test wheel 519 generates static electricity due to friction with the brake, causing dust to adhere to its surface. The cleaning sleeve 513 removes this dust, resulting in a more accurate brake lock-up when the test wheel 519 contacts the brake. Meanwhile, the rotation of the cam 514 drives the driven rod 5... 17 moves left and right back and forth. The U-shaped limit plate 516 limits the movement of the moving frame 515, which in turn allows the L-shaped plate 512 to drive the static elimination plate 520 to move back and forth horizontally. While cleaning the dust adsorbed on the surface of the test wheel 519, the cleaning sleeve 513 also discharges the static electricity on the surface of the test wheel 519. The static elimination plate 520 treats the static electricity on the surface of the cleaning sleeve 513, and at the same time, it also completes the treatment of the static electricity on the surface of the test wheel 519. When the brake is locked, the influence of static electricity and dust is effectively reduced, and the detection accuracy of the brake is improved.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A brake torque measuring apparatus characterized by: Including workbench (1), the top of workbench (1) is fixedly connected with H type support table (3); Power component (4), the top of H type support table (3) is equipped with power component (4), and power component (4) is used to control the size of torque; Test component (5), the left and right sides of power component (4) are equipped with test component (5), and test component (5) is used to test the torque of brake; The left and right sides of the top of the H type support table (3) are fixedly connected with bearing seat (6), the power component (4) includes protective box (401), the top of protective box (401) is provided with first connecting hole (408), the hole wall of first connecting hole (408) is rotatably connected with first rotating rod (406), the bottom of first rotating rod (406) is fixedly connected with second rotating rod (405), the bottom of second rotating rod (405) is fixedly connected with first bevel gear (403), and the left side of protective box (401) is provided with second connecting hole (407); The top of workbench (1) is fixedly connected with the bottom of I-shaped frame (504), the inner wall of bearing seat (6) is rotatably connected with third rotating rod (507), one end of third rotating rod (507) close to protective box (401) is fixedly connected with second bevel gear (508), the top of I-shaped frame (504) is fixedly connected with test cylinder (501), one side of test cylinder (501) close to protective box (401) is fixedly connected with ring plate (505), the inner wall of ring plate (505) is rotatably connected with the surface of third rotating rod (507), one side of ring plate (505) is provided with through hole (506), the inner wall of through hole (506) is rotatably connected with fourth rotating rod (509), the surface of third rotating rod (507) is fixedly provided with driving gear (510), the surface of fourth rotating rod (509) is fixedly provided with driven gear (511), driving gear (510) is engaged with driven gear (511), the surface of fourth rotating rod (509) is fixedly provided with cleaning sleeve (513), the surface of fourth rotating rod (509) is fixedly provided with cam (514), the upper and lower sides in test cylinder (501) are fixedly connected with U-shaped limiting plate (516), the surface of U-shaped limiting plate (516) is slidably provided with moving frame (515), one side of moving frame (515) close to driving gear (510) is fixedly connected with driven rod (517), one end of driven rod (517) is abutted with the inner wall of cam (514), and the bottom of test cylinder (501) is provided with chip removal groove (518); The surface of the outer side of moving frame (515) is fixedly connected with L-shaped plate (512), and one side of L-shaped plate (512) close to driving gear (510) is fixedly connected with static elimination plate (520).

2. A brake torque measuring device according to claim 1, characterised in that: The bottom of the protection box (401) is fixedly connected with the top of the H-shaped support table (3), and the first connecting hole (408) is in communication with the interior of the protection box (401).

3. A brake torque measuring device according to claim 1, characterised in that: The torque sensor (404) is fixedly installed in the interior of the protection box (401), the test terminal of the torque sensor (404) is in contact with the surface of the first rotating rod (406), the top of the protection box (401) is fixedly connected with the servo motor (402), the output end of the servo motor (402) is fixedly connected with the top of the first rotating rod (406) through a shaft coupling, the top of the workbench (1) is fixedly connected with the controller (2), the output end of the controller (2) is electrically connected with the receiving end of the servo motor (402), and the output end of the controller (2) is electrically connected with the receiving end of the torque sensor (404).

4. A brake torque measuring apparatus according to claim 1, characterized by: The surface of the third rotating rod (507) is rotatably connected with the inner wall of the second connecting hole (407), and the second bevel gear (508) is engaged with the first bevel gear (403).

5. A brake torque measuring apparatus according to claim 1, characterized by: The surface of the destaticizing plate (520) is abutted with the surface of the cleaning sleeve (513).

6. A brake torque measuring apparatus according to claim 1, wherein: The number of the driven gears (511) is two, and the two driven gears (511) are arranged in an annular array.

7. A brake torque measuring apparatus according to claim 1, wherein: The surface of the test wheel (519) is fixedly sleeved on the surface of the third rotating rod (507) and abutted with the surface of the cleaning sleeve (513), and the front surface of the test cylinder (501) is provided with the mounting groove (503).

8. A brake torque measuring apparatus according to claim 1, wherein: The front surface of the test cylinder (501) is fixedly installed with the fixing plate (502).

9. A brake torque measuring method using the brake torque measuring apparatus according to any one of claims 1 to 8, characterized by, The measurement method comprises the following steps: S1, two brakes are fixed on the two fixing plates (502) on the left and right sides, at this time, the test end of the brake passes through the mounting groove (503), so that the test end of the brake is abutted with the test wheel (519), the servo motor (402) is started to make the servo motor (402) rotate in a positive direction, so as to drive the first rotating rod (406) to rotate in a positive direction, the torque sensor (404) can monitor the torque, so that the controller (2) can better control the output power of the servo motor (402), the second rotating rod (405) is synchronously rotated while the first rotating rod (406) is rotated, so as to drive the first bevel gear (403) to rotate, thereby driving the second bevel gears (508) on the left and right sides to synchronously rotate, so that the third rotating rod (507) is synchronously rotated, so that the test wheel (519) is rotated, the brake is detected, the rotation and locking of the test wheel (519) are realized by the power-on and power-off of the brake, and the detection of the brake torque is completed through the feedback of the force on the third rotating rod (507) to the display instrument through the torque sensor (404). S2, while the brake torque detection, the third rotating rod (507) rotates, will drive the driving gear (510) to rotate, thus driving the driven gear (511) to rotate, so that the fourth rotating rod (509) drives the cam (514) to rotate, the fourth rotating rod (509) drives the cleaning sleeve (513) to rotate, the cleaning sleeve (513) rotates at the same time will be on the surface of the test wheel (519) processing, so that the test wheel (519) contact brake, the brake is more accurate when the result of locking, and the cam (514) rotates, will drive the driven rod (517) to move left and right reciprocating, through the setting of the U-shaped limiting plate (516) limiting, so that the moving frame (515) can move horizontally reciprocating, so that the L-shaped plate (512) drives the static plate (520) to move horizontally reciprocating, the static on the surface of the cleaning sleeve (513) is handled, improve the detection accuracy of the brake.

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