Abrasion testing machine for friction block of automobile disc brake

Abstract

The invention discloses an abrasion testing machine for a friction block of an automobile disc brake, and relates to the technical field of automobiles. The abrasion testing machine for the friction block of the automobile disc brake comprises a bottom box, a hollow seat A and a hollow seat B are fixedly installed at the top of the bottom box, the hollow seat A and the hollow seat B are arranged in a bilateral symmetry mode, the hollow seat A and the hollow seat B are both communicated with the interior of the bottom box, and cylinders are rotationally installed on the two sides of the hollow seat B. According to the abrasion testing machine for the friction block of the automobile disc brake, the inner side of the protective cover can be heated and cooled through the refrigerator and the heater, the temperature of the protective cover is controlled, the abrasion states of the friction block at different temperatures can be simulated, the test preciseness is improved, the brake disc can be driven to rotate through the driving structure, and the abrasion testing efficiency is improved. Through cooperation of the transmission assembly and the pushing assembly, the friction block can be driven to make intermittent contact with the brake disc, the state of the friction block in use can be simulated, and the abrasion degree of the friction block in normal use can be measured.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, in particular to an automobile disc brake friction block wear testing machine. Background Art

[0002] Automobile friction blocks are an important part of the automobile braking system, mainly composed of friction materials and adhesives. The friction material is responsible for generating friction during braking, thereby achieving the purpose of decelerating the vehicle, while the adhesive is used to firmly bond the friction material to the backing plate to ensure the braking effect. However, after the friction block is manufactured, it is necessary to conduct a wear test on the friction block to detect the service life of the friction block.

[0003] For example, Chinese patent document CN220912906U discloses a friction and wear device for detecting automobile brake pad materials, including a support seat, a protective device installed on the left upper end of the support seat, two slide grooves in the middle of the upper end of the support seat, a support frame installed on the upper ends of the two slide grooves, a No. 1 hydraulic cylinder installed on the left upper end of the support frame, a friction device installed on the lower end of the No. 1 hydraulic cylinder, and a pushing device installed on the right upper end of the support seat. The friction and wear device for detecting automobile brake pad materials described in the present invention drives the upper mounting seat and the test material to rotate by a motor, so that the friction block and the test material rub against each other, and is protected by a protective cover during friction, thereby preventing waste chips from splashing out, thereby improving the safety of the device, and the friction block can be removed from the connecting seat by loosening the connecting bolts, thereby facilitating the disassembly and replacement of the friction block.

[0004] However, the above-mentioned device for detecting the friction and wear of automobile brake pad materials cannot comprehensively detect the state of the brake pad at different temperatures during use. Summary of the invention

[0005] The object of the present invention is to provide a vehicle disc brake friction pad wear tester to solve the problems and defects raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automobile disc brake friction block wear tester, comprising a bottom box, a hollow seat A and a hollow seat B are fixedly installed on the top of the bottom box, the hollow seat A and the hollow seat B are symmetrically arranged, the hollow seat A and the hollow seat B are both connected to the inside of the bottom box, cylinders are rotatably installed on both sides of the hollow seat B, a telescopic rod is slidably installed on one side of the cylinder, a turntable is fixedly installed on one end of the telescopic rod, a mounting plate is fixedly installed on the top outer wall of the bottom box, a movable rod is slidably installed on the mounting plate, a fixed plate is fixedly installed on one end of the movable rod, a brake disc is arranged on one side of the turntable, a friction block is arranged on one side of the fixed plate, and also includes a control device arranged above the brake disc and the friction block. The cooler and the heater are used to control the detection temperature of the brake disc and the friction block, and can simulate the wear state of the friction block at different temperatures to improve the rigor of the test. The first clamping component installed on the turntable and the second clamping component installed on the fixed plate are used to clamp and fix the brake disc and the friction block through the first clamping component and the second clamping component. The driving structure installed on the bottom box and the cylinder is used to drive the brake disc to rotate through the driving structure. The pushing component installed on the hollow seat A and the movable rod has a transmission component arranged between the pushing structure and the driving structure. The driving structure, the transmission component and the pushing component are used to drive the friction block to intermittently contact the brake disc.

[0007] Preferably, a protective cover is fixedly installed on the top of the base box, the protective cover has an opening, two protective doors are slidably installed on the outer side of the outer wall of the protective cover, handles are fixedly installed on the front and rear outer walls of the two protective doors, the refrigerator is fixedly installed on the top of one protective door, and the heater is fixedly installed on the top of the other protective door, and the refrigerator and the heater both extend to the inner side of the protective door.

[0008] Preferably, the first clamping assembly includes a first bidirectional threaded rod, a clamping plate, and a first knob. A slide groove is opened on one side of the turntable. The first bidirectional threaded rod is rotatably installed at the top and bottom of the slide groove. The clamping plate has two threads installed on the outer wall of the first bidirectional threaded rod. The first knob has two clamping plates respectively fixedly installed at both ends of the first bidirectional threaded rod. The two clamping plates are slidably installed in the slide groove, and the brake disc is located between the two clamping plates.

[0009] Preferably, the second clamping assembly includes a second threaded rod, a clamping rod A, a second knob, a third threaded rod, a clamping rod B, and a third knob. A cross slot is provided on one side of the fixing plate. The second threaded rod is rotatably installed at the top and bottom of the cross slot. The clamping rod A has two portions that are respectively threadedly installed on the outer wall of the second threaded rod. The second knob has two portions that are respectively fixedly installed at both ends of the second threaded rod. The third threaded rod is rotatably installed at the front and rear sides of the cross slot. The clamping rod B has two portions that are respectively threadedly installed on the outer wall of the third threaded rod. The third knob has two portions that are respectively fixedly installed at both ends of the third threaded rod. The clamping rod A and the clamping rod B are both slidably installed in the cross slot, and the friction block is located between the clamping rod A and the clamping rod B.

[0010] Preferably, the driving structure includes a motor, a rotating rod, a third pulley, a fourth pulley, and a second belt. The motor is fixedly installed on an outer wall of one side of the base box, the rotating rod is rotatably installed on the inner walls of both sides of the base box, the third pulley is fixedly installed on the outer wall of the rotating rod, the fourth pulley is fixedly installed on the outer wall of the cylinder, the second belt is sleeved on the third pulley and the fourth pulley, the third pulley is transmission connected to the fourth pulley through the second belt, and the output shaft of the motor is fixedly connected to one end of the rotating rod for driving the brake disc to rotate.

[0011] Preferably, the pushing assembly includes a rotating shaft, a rotating plate, a convex block, a fixed frame, a fixed shaft, and a roller. The rotating shaft is rotatably installed on both sides of the hollow seat A, the rotating plate is fixedly installed on one end of the rotating shaft, the convex block is fixedly installed on one side of the rotating plate, the fixed frame is fixedly installed on the other end of the movable rod, the fixed shaft is fixedly installed on the inner side of the fixed frame, and the roller is rotatably installed on the outer wall of the fixed shaft, which can drive the friction block to intermittently contact the brake disc, can simulate the state of the friction block when in use, and measure the degree of wear of the friction block during normal use.

[0012] Preferably, the transmission assembly includes pulley A, pulley B, and a first belt, pulley A is fixedly installed on the outer wall of the rotating rod, pulley B is fixedly installed on the outer wall of the rotating shaft, the first belt is sleeved on pulley A and pulley B, and pulley A is connected to pulley B through the first belt.

[0013] Preferably, a push spring is provided on the inner side of the cylinder, and the push spring is fixedly mounted on the other side of the telescopic rod.

[0014] Preferably, guide strips are provided at the top and the bottom of the telescopic rod, and a reset spring is sleeved on the outer wall of the movable rod for resetting the fixed frame, the fixed shaft and the roller.

[0015] Preferably, a control panel is fixedly mounted on the front outer wall of one of the protective doors.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The automobile disc brake friction block wear tester can heat up and cool down the inner side of the protective cover through a refrigerator and a heater to control the temperature of the protective cover, and can simulate the wear state of the friction block at different temperatures to improve the rigor of the test. The brake disc can be driven to rotate through a driving structure, and then the friction block can be driven to intermittently contact the brake disc through the cooperation of the transmission component and the pushing component, which can simulate the state of the friction block when in use and measure the degree of wear of the friction block during normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the inner side of the protective cover of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure on the other side; Figure 4 is a cross-sectional view of the bottom box of the present invention; Figure 5 is a cross-sectional view of a turntable of the present invention; Figure 6 It is a cross-sectional view of the fixing plate of the present invention.

[0018] Figure numerals: 1, bottom box; 2, hollow seat A; 3, hollow seat B; 4, cylinder; 5, telescopic rod; 6, push spring; 7, turntable; 8, mounting plate; 9, movable rod; 10, fixed plate; 11, rotating shaft; 12, rotating plate; 13, convex block; 14, fixed frame; 15, fixed shaft; 16, roller; 17, reset spring; 18, brake disc; 19, friction block; 20, first bidirectional threaded rod; 21, clamping plate; 22, first Knob; 23. second threaded rod; 24. clamping rod A; 25. second knob; 26. third threaded rod; 27. clamping rod B; 28. third knob; 29. ​​motor; 30. rotating rod; 31. pulley A; 32. pulley B; 33. first belt; 34. third pulley; 35. fourth pulley; 36. second belt; 37. protective cover; 38. protective door; 39. handle; 40. refrigerator; 41. heater. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] See also Figure 1-6The present invention provides a technical solution: an automobile disc brake friction block wear tester, comprising a bottom box 1, a hollow seat A2 and a hollow seat B3 are fixedly installed on the top of the bottom box 1, the hollow seat A2 and the hollow seat B3 are symmetrically arranged, the hollow seat A2 and the hollow seat B3 are communicated with the interior of the bottom box 1, cylinders 4 are rotatably installed on both sides of the hollow seat B3, a telescopic rod 5 is slidably installed on one side of the cylinder 4, a turntable 7 is fixedly installed on one end of the telescopic rod 5, a mounting plate 8 is fixedly installed on the top outer wall of the bottom box 1, a movable rod 9 is slidably installed on the mounting plate 8, a fixed plate 10 is fixedly installed on one end of the movable rod 9, a brake disc 18 is arranged on one side of the turntable 7, a friction block 19 is arranged on one side of the fixed plate 10, and a refrigeration device arranged above the brake disc 18 and the friction block 19 is also included. The refrigerator 40 and the heater 41 are used to control the detection temperature of the brake disc 18 and the friction block 19, and can simulate the wear state of the friction block at different temperatures to improve the rigor of the test. The first clamping component installed on the turntable 7 and the second clamping component installed on the fixed plate 10 are used to clamp and fix the brake disc 18 and the friction block 19 through the first clamping component and the second clamping component. The driving structure installed on the bottom box 1 and the cylinder 4 is used to drive the brake disc 18 to rotate through the driving structure. The pushing component installed on the hollow seat A2 and the movable rod 9 has a transmission component between the pushing structure and the driving structure. The driving structure, the transmission component and the pushing component are used to drive the friction block 19 to intermittently contact the brake disc 18.

[0021] Furthermore, a protective cover 37 is fixedly installed on the top of the base box 1, and the protective cover 37 has an opening. Two protective doors 38 are slidably installed on the outer side of the outer wall of the protective cover 37, and handles 39 are fixedly installed on the front and rear outer walls of the two protective doors 38. The refrigerator 40 is fixedly installed on the top of one protective door 38, and the heater 41 is fixedly installed on the top of the other protective door 38. The refrigerator 40 and the heater 41 both extend to the inner side of the protective door 38.

[0022] Furthermore, the first clamping assembly includes a first bidirectional threaded rod 20, a clamping plate 21, and a first knob 22. A slide groove is opened on one side of the turntable 7. The first bidirectional threaded rod 20 is rotatably installed at the top and bottom of the slide groove. The clamping plate 21 has two threads installed on the outer wall of the first bidirectional threaded rod 20. The first knob 22 has two ends respectively fixedly installed on the first bidirectional threaded rod 20. The two clamping plates 21 are slidably installed in the slide groove, and the brake disc 18 is located between the two clamping plates 21. The first knob 22 is manually twisted, and the first knob 22 drives the first bidirectional threaded rod 20 to rotate. The rotation of the first bidirectional threaded rod 20 drives the two clamping plates 21 to move toward each other, so that the two clamping plates 21 clamp and fix the brake disc 18.

[0023] Furthermore, the second clamping assembly includes a second threaded rod 23, a clamping rod A24, a second knob 25, a third threaded rod 26, a clamping rod B27, and a third knob 28. A cross groove is provided on one side of the fixing plate 10. The second threaded rod 23 is rotatably mounted on the top and bottom of the cross groove. The clamping rod A24 has two threads respectively mounted on the outer wall of the second threaded rod 23. The second knob 25 has two threads respectively fixedly mounted on both ends of the second threaded rod 23. The third threaded rod 26 is rotatably mounted on the front and rear sides of the cross groove. The clamping rod B27 has two threads respectively mounted on the outer wall of the third threaded rod 26. The third knob 28 has two threads respectively mounted on the outer wall of the third threaded rod 26. They are fixedly installed at both ends of the third threaded rod 26, and the clamping rod A24 and the clamping rod B27 are both slidably installed in the cross groove, and the friction block 19 is located between the clamping rod A24 and the clamping rod B27. The second knob 25 is manually twisted, and the second knob 25 drives the second threaded rod 23 to rotate. The rotation of the second threaded rod 23 drives the two clamping rods A24 to move toward each other. The third knob 28 is manually twisted, and the third knob 28 drives the third threaded rod 26 to rotate. The rotation of the third threaded rod 26 drives the two clamping rods B27 to move toward each other, so that the two clamping rods A24 and the two clamping rods B27 can clamp and fix the friction block 19.

[0024] Furthermore, the driving structure includes a motor 29, a rotating rod 30, a third pulley 34, a fourth pulley 35, and a second belt 36. The motor 29 is fixedly installed on an outer wall of one side of the bottom box 1, the rotating rod 30 is rotatably installed on the inner walls on both sides of the bottom box 1, the third pulley 34 is fixedly installed on the outer wall of the rotating rod 30, the fourth pulley 35 is fixedly installed on the outer wall of the cylinder 4, the second belt 36 is sleeved on the third pulley 34 and the fourth pulley 35, the third pulley 34 is transmission-connected with the fourth pulley 35 through the second belt 36, the output shaft of the motor 29 is fixedly connected to one end of the rotating rod 30, the motor 29 is started, and the output shaft of the motor 29 drives the rotating rod 30, the pulley A31, and the third pulley 34 to rotate, and the third pulley 34 drives the fourth pulley 35, the cylinder 4, the telescopic rod 5, the turntable 7, and the brake disc 18 to rotate through the second belt 36.

[0025] Furthermore, the pushing component includes a rotating shaft 11, a rotating plate 12, a convex block 13, a fixing frame 14, a fixed shaft 15, and a roller 16. The rotating shaft 11 is rotatably installed on both sides of the hollow seat A2, the rotating plate 12 is fixedly installed on one end of the rotating shaft 11, the convex block 13 is fixedly installed on one side of the rotating plate 12, the fixing frame 14 is fixedly installed on the other end of the movable rod 9, the fixed shaft 15 is fixedly installed on the inner side of the fixing frame 14, and the roller 16 is rotatably installed on the outer wall of the fixed shaft 15. The pulley A31 drives the pulley B32, the rotating shaft 11, the rotating plate 12, and the convex block 13 to rotate through the first belt 33. The rotation of the convex block 13 is used to intermittently push the roller 16, the fixed shaft 15, the fixing frame 14, the movable rod 9, the fixed plate 10, and the friction block 19, so that the friction block 19 can intermittently contact the brake disc 18, simulate the state of the friction block 19 when in use, and measure the degree of wear of the friction block 19 during normal use.

[0026] Furthermore, the transmission assembly includes a pulley A31, a pulley B32, and a first belt 33. The pulley A31 is fixedly mounted on the outer wall of the rotating rod 30, the pulley B32 is fixedly mounted on the outer wall of the rotating shaft 11, and the first belt 33 is sleeved on the pulley A31 and the pulley B32. The pulley A31 is connected to the pulley B32 through the first belt 33.

[0027] Furthermore, a push spring 6 is provided on the inner side of the cylinder 4 , and the push spring 6 is fixedly mounted on the other side of the telescopic rod 5 .

[0028] Furthermore, guide strips are provided at the top and bottom of the telescopic rod 5 , and a reset spring 17 is sleeved on the outer wall of the movable rod 9 for resetting the fixing frame 14 , the fixing shaft 15 , and the roller 16 .

[0029] Furthermore, a control panel is fixedly mounted on the front outer wall of one of the protective doors 38 .

[0030] Working principle: the brake disc 18 is placed on one side of the turntable 7, and the first knob 22 is manually twisted, so that the first knob 22 drives the first bidirectional threaded rod 20 to rotate, and the rotation of the first bidirectional threaded rod 20 drives the two clamping plates 21 to move toward each other, so that the two clamping plates 21 clamp and fix the brake disc 18, and the friction block 19 is placed on one side of the fixed plate 10, and the second knob 25 is manually twisted, so that the second knob 25 drives the second threaded rod 23 to rotate, and the rotation of the second threaded rod 23 drives the two clamping rods A24 to move toward each other, and the third knob 28 is manually twisted, so that the third knob 28 drives the third threaded rod 26 to rotate, and the rotation of the third threaded rod 26 drives the two clamping rods B27 to move toward each other, so that the two clamping rods A24 and the two clamping rods B27 can clamp and fix the friction block 19, and the handle 39 and the protective door 38 are manually pushed to close the protective cover 3 The opening of 7 is closed, and then the refrigerator 40 and the heater 41 are started through the control panel to control the temperature inside the protective cover 37, and the motor 29 is started through the control panel. The output shaft of the motor 29 drives the rotating rod 30, the pulley A31, and the third pulley 34 to rotate. The third pulley 34 drives the fourth pulley 35, the cylinder 4, the telescopic rod 5, the turntable 7, and the brake disc 18 to rotate through the second belt 36, and the pulley A31 drives the pulley B32, the rotating shaft 11, the rotating plate 12, and the convex block 13 to rotate through the first belt 33. The rotation of the convex block 13 is used to intermittently push the roller 16, the fixed shaft 15, the fixed frame 14, the movable rod 9, the fixed plate 10, and the friction block 19, so that the friction block 19 can intermittently contact with the brake disc 18, simulate the state of the friction block 19 when in use, and measure the degree of wear of the friction block 19 during normal use.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An automobile disc brake friction block wear tester, comprising a bottom box (1), a hollow seat A (2) and a hollow seat B (3) are fixedly mounted on the top of the bottom box (1), the hollow seat A (2) and the hollow seat B (3) are arranged symmetrically, the hollow seat A (2) and the hollow seat B (3) are both connected to the inside of the bottom box (1), cylinders (4) are rotatably mounted on both sides of the hollow seat B (3), a telescopic rod (5) is slidably mounted on one side of the cylinder (4), a turntable (7) is fixedly mounted on one end of the telescopic rod (5), a mounting plate (8) is fixedly mounted on the top outer wall of the bottom box (1), a movable rod (9) is slidably mounted on the mounting plate (8), a fixed plate (10) is fixedly mounted on one end of the movable rod (9), a brake disc (18) is arranged on one side of the turntable (7), and a friction block (19) is arranged on one side of the fixed plate (10), characterized in that: Also includes: A cooler (40) and a heater (41) are disposed above the brake disc (18) and the friction block (19), and are used to control the detection temperature of the brake disc (18) and the friction block (19) through the cooler (40) and the heater (41); A first clamping assembly mounted on the rotating disk (7) and a second clamping assembly mounted on the fixing plate (10), the first clamping assembly and the second clamping assembly being used to clamp and fix the brake disc (18) and the friction block (19); A driving structure mounted on the bottom box (1) and the cylinder (4), used to drive the brake disc (18) to rotate through the driving structure; A pushing assembly is installed on the hollow seat A (2) and the movable rod (9), and a transmission assembly is arranged between the pushing structure and the driving structure. The driving structure, the transmission assembly, and the pushing assembly are used to drive the friction block (19) to intermittently contact the brake disc (18) through the coordinated use of the driving structure, the transmission assembly, and the pushing assembly.

2. The automobile disc brake friction pad wear testing machine according to claim 1, characterized in that: A protective cover (37) is fixedly mounted on the top of the bottom box (1), the protective cover (37) having an opening, two protective doors (38) are slidably mounted on the outer side of the outer wall of the protective cover (37), handles (39) are fixedly mounted on the front and rear outer walls of the two protective doors (38), a refrigerator (40) is fixedly mounted on the top of one protective door (38), a heater (41) is fixedly mounted on the top of the other protective door (38), and the refrigerator (40) and the heater (41) both extend to the inner side of the protective door (38).

3. The automobile disc brake friction pad wear testing machine according to claim 2, characterized in that: The first clamping assembly comprises a first bidirectional threaded rod (20), a clamping plate (21), and a first knob (22); a slide groove is provided on one side of the turntable (7); the first bidirectional threaded rod (20) is rotatably mounted on the top and bottom of the slide groove; the clamping plate (21) has two threads both mounted on the outer wall of the first bidirectional threaded rod (20); the first knob (22) has two fixedly mounted on both ends of the first bidirectional threaded rod (20); the two clamping plates (21) are slidably mounted in the slide groove; and the brake disc (18) is located between the two clamping plates (21).

4. The automobile disc brake friction pad wear testing machine according to claim 3, characterized in that: The second clamping assembly comprises a second threaded rod (23), a clamping rod A (24), a second knob (25), a third threaded rod (26), a clamping rod B (27), and a third knob (28). A cross groove is provided on one side of the fixing plate (10). The second threaded rod (23) is rotatably mounted on the top and bottom of the cross groove. The clamping rod A (24) has two threads respectively mounted on the outer wall of the second threaded rod (23). The second knob (25) has two threads respectively fixedly mounted on the two ends of the second threaded rod (23). The third threaded rod (26) is rotatably mounted on the front and rear sides of the cross groove. The clamping rod B (27) has two threads respectively mounted on the outer wall of the third threaded rod (26). The third knob (28) has two threads respectively fixedly mounted on the two ends of the third threaded rod (26). The clamping rod A (24) and the clamping rod B (27) are both slidably mounted in the cross groove. The friction block (19) is located between the clamping rod A (24) and the clamping rod B (27).

5. The automobile disc brake friction pad wear testing machine according to claim 4, characterized in that: The driving structure comprises a motor (29), a rotating rod (30), a third belt pulley (34), a fourth belt pulley (35), and a second belt (36); the motor (29) is fixedly mounted on an outer wall of one side of the bottom box (1); the rotating rod (30) is rotatably mounted on the inner walls of both sides of the bottom box (1); the third belt pulley (34) is fixedly mounted on the outer wall of the rotating rod (30); the fourth belt pulley (35) is fixedly mounted on the outer wall of the cylinder (4); the second belt (36) is sleeved on the third belt pulley (34) and the fourth belt pulley (35); the third belt pulley (34) is transmission-connected to the fourth belt pulley (35) via the second belt (36); and the output shaft of the motor (29) is fixedly connected to one end of the rotating rod (30).

6. The automobile disc brake friction pad wear testing machine according to claim 5, characterized in that: The pushing assembly comprises a rotating shaft (11), a rotating plate (12), a convex block (13), a fixing frame (14), a fixed shaft (15), and a roller (16). The rotating shaft (11) is rotatably mounted on both sides of the hollow seat A (2), the rotating plate (12) is fixedly mounted on one end of the rotating shaft (11), the convex block (13) is fixedly mounted on one side of the rotating plate (12), the fixing frame (14) is fixedly mounted on the other end of the movable rod (9), the fixed shaft (15) is fixedly mounted on the inner side of the fixing frame (14), and the roller (16) is rotatably mounted on the outer wall of the fixed shaft (15).

7. The automobile disc brake friction pad wear testing machine according to claim 6, characterized in that: The transmission assembly comprises a pulley A (31), a pulley B (32), and a first belt (33); the pulley A (31) is fixedly mounted on the outer wall of the rotating rod (30); the pulley B (32) is fixedly mounted on the outer wall of the rotating shaft (11); the first belt (33) is sleeved on the pulley A (31) and the pulley B (32); the pulley A (31) is connected to the pulley B (32) through the first belt (33).

8. The automobile disc brake friction pad wear testing machine according to claim 7, characterized in that: A push spring (6) is arranged on the inner side of the cylinder (4), and the push spring (6) is fixedly mounted on the other side of the telescopic rod (5).

9. The automobile disc brake friction pad wear testing machine according to claim 8, characterized in that: The top and bottom of the telescopic rod (5) are both provided with guide strips, and the outer wall of the movable rod (9) is sleeved with a return spring (17).

10. The automobile disc brake friction pad wear testing machine according to claim 9, characterized in that: A control panel is fixedly mounted on the front outer wall of one of the protective doors (38).

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