Brake pad abrasion resistance detection device

Abstract

The invention relates to the field of brake pad production, and particularly discloses a brake pad abrasion resistance detection device which comprises a base, a workbench is arranged on the upper side of the base, a friction disc is rotationally connected to the workbench, two symmetrically-arranged arc-shaped vertical plates are fixed to the upper end face of the workbench, and a fixing plate is arranged on the upper side of the workbench. The two ends of the fixing plate are detachably connected to the upper ends of the two arc-shaped vertical plates, a top plate is fixed to the upper end face of the fixing plate, two symmetrically-arranged pneumatic cylinders are fixed to the upper end face of the top plate, piston rods of the pneumatic cylinders penetrate through the top plate, the brake pads are embedded into the containing cavity, and the pneumatic cylinders drive the pushing and pressing bases to move downwards, so that the brake pads abut against the upper end face of the friction disc. Through rotation of the friction disc, friction is performed on the brake pad, wear resistance detection is performed on the brake pad, when the friction disc rubs against the brake pad, heat dissipation on the friction disc can be accelerated through the vent grooves and the vent holes in the friction disc, and therefore it is avoided that the friction disc is too hot, and normal operation of the detection process is affected.

Description

Technical Field

[0001] The invention relates to the field of brake pad production, and in particular to a brake pad wear resistance detection device. Background Art

[0002] The wear resistance of brake pads is directly related to the braking effect and driving safety of the vehicle. Therefore, regular wear resistance testing of brake pads to ensure that their performance meets safety standards is an important measure to ensure driving safety.

[0003] The inspection method for brake pads is mainly to rotate the friction disc of the wear tester at high speed, and the brake pad abuts against the friction disc to brake it. After a certain number of reciprocating cycles, the thickness change of the brake pad is measured to judge the wear resistance of the brake pad. In this process, the friction disc generates heat due to the friction of the brake pad. If the heat dissipation is not timely, the friction disc may be deformed under the action of thermal stress, which in turn affects the normal progress of the inspection process. Summary of the invention

[0004] The object of the present invention is to provide a brake pad wear resistance detection device to overcome the above-mentioned defects in the prior art.

[0005] A brake pad wear resistance detection device according to the present invention comprises a base, a workbench is arranged on the upper side of the base, a friction disc is rotatably connected to the workbench, two symmetrically arranged arc-shaped vertical plates are fixed to the upper end surface of the workbench, a fixing plate is arranged on the upper side of the workbench, two ends of the fixing plate are detachably connected to the upper ends of the two arc-shaped vertical plates, a top plate is fixed to the upper end surface of the fixing plate, two symmetrically arranged pneumatic cylinders are fixed to the upper end surface of the top plate, the piston rod of the pneumatic cylinder passes through the top plate, a pushing seat located on the lower side of the top plate is fixed to the lower end of the piston rod of the pneumatic cylinder, a storage cavity for fixing the brake pad is provided in the lower end surface of the pushing seat, a plurality of ventilation grooves distributed circumferentially with the axis of the friction disc as the center are provided in the friction disc, the ventilation groove is opened at one end away from the axis of the friction disc, and a plurality of ventilation holes connected with the ventilation grooves are provided on the upper and lower end surfaces of the friction disc.

[0006] Through the above technical solution, the brake pad is embedded in the storage cavity, and the pneumatic cylinder drives the pushing seat to move downward, so that the brake pad is abutted against the upper end surface of the friction disc, and the brake pad is rubbed by the rotation of the friction disc, so as to perform wear resistance detection on the brake pad. When the friction disc and the brake pad rub against each other, the ventilation grooves and ventilation holes on the friction disc can accelerate the heat dissipation on the friction disc, thereby avoiding overheating of the friction disc and affecting the normal progress of the detection process.

[0007] Preferably, a fixed guard plate is fixedly provided on the upper end surface of the workbench, and both ends of the workbench are fixedly provided on two arc-shaped vertical plates, the upper edge of the fixed guard plate is located on the lower side of the friction disk, and a movable guard plate opposite to the fixed guard plate is detachably connected between the two arc-shaped vertical plates, and the outer circumference of the movable guard plate, the fixed guard plate and the two arc-shaped vertical plates form a circular ring with the same diameter as the friction disk, and a heat dissipation zone is formed between the circular ring, the friction disk and the workbench, and an exhaust fan is fixed on the upper end surface of the arc-shaped vertical plate, and the air in the heat dissipation zone is discharged as the exhaust fan rotates.

[0008] Through the above technical solution, after the exhaust fan is started, the air between the friction disk and the workbench is discharged to the outside, forming a negative pressure inside, and the outside air is sucked into the space between the friction disk and the workbench through the vent holes and the vent grooves, thereby accelerating the heat dissipation of the friction disk.

[0009] Preferably, a notch is provided on the outer periphery of the movable guard plate, the lower end of the notch is open, and the notch is sleeved on the outer periphery of the exhaust fan.

[0010] Through the above technical solution, the setting of the notch is conducive to the disassembly and assembly of the movable guard plate on the workbench.

[0011] Preferably, a connecting groove is provided on one side of the arc-shaped vertical plate close to the movable guard plate, the upper end of the connecting groove is open, and the cross-section of the connecting groove is in the shape of an "I" character. The movable guard plate is fixedly provided with a snap-in strip on both side edges close to the arc-shaped vertical plate, the cross-section of the snap-in strip is consistent with the connecting groove, and the snap-in strip can be embedded in the connecting groove.

[0012] Through the above technical solution, the card strip is embedded in the connection groove to increase the connection strength and stability between the movable guard plate and the arc-shaped vertical plate.

[0013] Preferably, a supporting sleeve is fixed to the upper end surface of the workbench, a central shaft is rotatably connected in the supporting sleeve, the central shaft passes through the friction disk along the axis of the friction disk and is fixedly connected to the friction disk, a clamping seat abutting therewith is provided on the upper and lower sides of the friction disk, a supporting seat is provided on the side of the clamping seat away from the friction disk, a ball groove is provided on the side of the clamping seat and the support seat close to each other, a plurality of balls rolling in the ball groove are provided between the clamping seat and the support seat, the support seat on the lower side abuts against the supporting sleeve, the support seat on the upper side abuts against the fixed plate, the central shaft passes through the supporting seat and the clamping seat, a motor is fixed to the lower end surface of the workbench, and the central shaft is fixedly connected to the rotating shaft of the motor.

[0014] Through the above technical solution, the clamping seat and the supporting seat rotate smoothly due to the rotation of the balls, thereby increasing the stability of the friction disk during rotation.

[0015] Preferably, a side of the friction disc close to the clamping seat is fixed with a plurality of positioning blocks distributed circumferentially around the central axis, and a side of the clamping seat close to the friction disc is provided with a plurality of positioning grooves corresponding to the positioning blocks, and the positioning blocks are embedded in the positioning grooves.

[0016] Through the above technical solution, the positioning block is embedded in the positioning groove, which can increase the connection stability between the clamping seat and the friction disk.

[0017] Preferably, a downwardly recessed slot is provided on the upper end of the arc-shaped vertical plate, and the two ends of the fixing plate can be embedded in the slot. A threaded hole is provided on the bottom wall of the slot, and through holes are provided at both ends of the fixing plate. The two ends of the fixing plate are fixed to the slot by threaded connection between bolts and the threaded holes.

[0018] Through the above technical solution, the bolts fix the fixing plate and the slot, making it convenient to disassemble and assemble the fixing plate and the arc-shaped vertical plate.

[0019] Preferably, a plurality of reinforcing ribs are fixed to the lower end surface of the top plate.

[0020] Through the above technical solution, the provision of reinforcing ribs can effectively increase the bending strength of the top plate.

[0021] Preferably, a plurality of guide rods are fixed to the upper end surface of the pushing seat, and the guide rods extend upward, penetrate the top plate, and are slidably connected to the top plate.

[0022] Through the above technical solution, the sliding connection between the guide rod and the top plate can increase the stability of the pushing seat during the up and down movement.

[0023] The beneficial effects of the present invention are as follows: the brake pad is embedded in the storage cavity, and the pneumatic cylinder drives the pushing seat to move downward, so that the brake pad abuts against the upper end surface of the friction disk, and the friction disk rotates to rub the brake pad, thereby performing wear resistance testing on the brake pad, and when the friction disk rubs against the brake pad, the ventilation grooves and ventilation holes on the friction disk can accelerate the heat dissipation on the friction disk, thereby avoiding overheating of the friction disk and affecting the normal progress of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 is an exploded view of the present invention; Figure 4 It is a structural schematic diagram of the workbench in the present invention; Figure 5 It is a structural schematic diagram of the movable guard plate in the present invention; Figure 6It is a schematic diagram of the structure of the clamping seat, the ball bearing and the supporting seat in the present invention; Figure 7 It is a structural schematic diagram of the friction disc in the present invention; Figure 8 It is a structural schematic diagram of the push seat and the top plate in the present invention.

[0025] In the figure: 10. Base; 20. Workbench; 21. Arc-shaped vertical plate; 211. Card slot; 212. Connecting slot; 23. Movable guard plate; 24. Notch; 25. Fixed guard plate; 26. Support sleeve; 28. Card strip; 30. Exhaust fan; 40. Fixed plate; 50. Top plate; 51. Pneumatic cylinder; 52. Guide rod; 53. Push seat; 531. Storage cavity; 54. Reinforcement rib; 60. Friction disc; 601. Ventilation groove; 602. Ventilation hole; 61. Positioning block; 70. Clamping seat; 701. Positioning groove; 71. Ball; 72. Support seat; 73. Ball groove; 80. Center axis; 90. Motor. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of simplifying the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms up, down and left, right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of the brake pad wear resistance detection device are described in detail below: An embodiment of the present invention: Reference Figure 1-Figure 8The present invention provides a brake pad wear resistance detection device, comprising a base 10, a workbench 20 is arranged on the upper side of the base 10, a friction disc 60 is rotatably connected to the workbench 20, two symmetrically arranged arc-shaped vertical plates 21 are fixed to the upper end surface of the workbench 20, a fixing plate 40 is arranged on the upper side of the workbench 20, both ends of the fixing plate 40 are detachably connected to the upper ends of the two arc-shaped vertical plates 21, a top plate 50 is fixed to the upper end surface of the fixing plate 40, and two symmetrically arranged pneumatic cylinders 51 are fixed to the upper end surface of the top plate 50, The piston rod of the pneumatic cylinder 51 passes through the top plate 50, and the lower end of the piston rod of the pneumatic cylinder 51 is fixed with a pushing seat 53 located on the lower side of the top plate 50. A storage cavity 531 for fixing the brake pad is provided in the lower end surface of the pushing seat 53. A plurality of ventilation grooves 601 distributed circumferentially with the axis of the friction disc 60 as the center are provided in the friction disc 60. The ventilation groove 601 is opened at one end away from the axis of the friction disc 60, and a plurality of ventilation holes 602 connected to the ventilation grooves 601 are provided on the upper and lower end surfaces of the friction disc 60.

[0028] Reference Figure 3 , Figure 4 A fixed guard plate 25 is fixedly arranged on the upper end surface of the workbench 20, and both ends of the workbench 20 are fixedly arranged on two arc-shaped vertical plates 21. The upper edge of the fixed guard plate 25 is located on the lower side of the friction disk 60. A movable guard plate 23 opposite to the fixed guard plate 25 is detachably connected between the two arc-shaped vertical plates 21. The outer periphery of the movable guard plate 23, the fixed guard plate 25 and the two arc-shaped vertical plates 21 forms a circular ring with the same diameter as the friction disk 60. A heat dissipation zone is formed between the circular ring, the friction disk 60 and the workbench 20. An exhaust fan 30 is fixed on the upper end surface of the arc-shaped vertical plate 21. The air in the heat dissipation zone is discharged as the exhaust fan 30 rotates. The exhaust fan 30 is driven by a motor.

[0029] Reference Figure 5 A notch 24 is provided on the outer periphery of the movable guard plate 23 , the lower end of the notch 24 is open, and the notch 24 is sleeved on the outer periphery of the exhaust fan 30 .

[0030] Reference Figure 4 , Figure 5 A connecting groove 212 is provided on one side of the arc-shaped vertical plate 21 close to the movable guard plate 23. The upper end of the connecting groove 212 is open, and the cross-section of the connecting groove 212 is in the shape of an "I". A clamping strip 28 is fixedly provided on both sides of the movable guard plate 23 close to the arc-shaped vertical plate 21. The cross-section of the clamping strip 28 is consistent with that of the connecting groove 212, and the clamping strip 28 can be embedded in the connecting groove 212.

[0031] Reference Figure 2-Figure 4 , Figure 6 , Figure 7A support sleeve 26 is fixed to the upper end surface of the workbench 20, and a central shaft 80 is rotatably connected in the support sleeve 26. The central shaft 80 passes through the friction disc 60 along the axis of the friction disc 60 and is fixedly connected to the friction disc 60. A clamping seat 70 abutting against it is provided on the upper and lower sides of the friction disc 60. A support seat 72 is provided on the side of the clamping seat 70 away from the friction disc 60. Ball grooves 73 are provided on the sides of the clamping seat 70 and the support seat 72 close to each other. A plurality of balls 71 rolling in the ball grooves 73 are provided between the clamping seat 70 and the support seat 72. The lower support seat 72 abuts against the support sleeve 26, and the upper support seat 72 abuts against the fixed plate 40. The central shaft 80 passes through the support seat 72 and the clamping seat 70. A motor 90 is fixed to the lower end surface of the workbench 20, and the central shaft 80 is fixedly connected to the rotating shaft of the motor 90.

[0032] Reference Figure 7 A plurality of positioning blocks 61 distributed circumferentially around the central axis 80 are fixedly arranged on one side of the friction disc 60 close to the clamping seat 70 . A plurality of positioning grooves 701 corresponding to the positioning blocks 61 are opened on one side of the clamping seat 70 close to the friction disc 60 . The positioning blocks 61 are embedded in the positioning grooves 701 .

[0033] Reference Figure 1 , Figure 4 , Figure 8 A downwardly recessed slot 211 is provided at the upper end of the arc-shaped vertical plate 21, and both ends of the fixing plate 40 can be embedded in the slot 211. A threaded hole is provided on the bottom wall of the slot 211, and through holes are provided at both ends of the fixing plate 40. The two ends of the fixing plate 40 are fixed to the slot 211 through threaded connections between bolts and the threaded holes. A plurality of reinforcing ribs 54 are fixed to the lower end surface of the top plate 50, and a plurality of guide rods 52 are fixed to the upper end surface of the pushing seat 53. The guide rods 52 extend upward, penetrate through the top plate 50, and are slidably connected to the top plate 50.

[0034] When the present invention is in use, the pneumatic cylinder 51 is in a shortened state, the initial thickness of the brake pad is measured first, and then the brake pad is embedded in the storage cavity 531, and then the pneumatic cylinder 51 is started to extend the pneumatic cylinder 51, and the push seat 53 moves downward, thereby pressing the brake pad against the upper end surface of the friction disk 60.

[0035] At this time, the motor 90 is started to drive the central shaft 80 to rotate, thereby causing the friction disk 60 to rotate, thereby rubbing the brake pad.

[0036] After a period of time, the motor 90 is turned off and the pneumatic cylinder 51 is started in reverse to shorten the pneumatic cylinder 51, thereby moving the brake pad away from the friction disc 60. The brake pad is removed from the storage cavity 531, and the thickness of the brake pad is measured and compared with the initial thickness to determine the wear resistance of the brake pad.

[0037] When the friction disc 60 rubs against the brake pad, the exhaust fan 30 is started, so that the air between the friction disc 60 and the workbench 20 is extracted, and the outside air is sucked into the space between the friction disc 60 and the workbench 20 through the vent holes 602 and the vent grooves 601, and so on, thereby increasing the heat dissipation effect of the friction disc 60.

[0038] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A brake pad wear resistance detection device, comprising a base (10), characterized in that: A workbench (20) is arranged on the upper side of the base (10), a friction disc (60) is rotatably connected to the workbench (20), two symmetrically arranged arc-shaped vertical plates (21) are fixed to the upper end surface of the workbench (20), a fixing plate (40) is arranged on the upper side of the workbench (20), two ends of the fixing plate (40) are detachably connected to the upper ends of the two arc-shaped vertical plates (21), a top plate (50) is fixed to the upper end surface of the fixing plate (40), two symmetrically arranged pneumatic cylinders (51) are fixed to the upper end surface of the top plate (50), and piston rods of the pneumatic cylinders (51) are The top plate (50) is penetrated, and a push seat (53) located at the lower side of the top plate (50) is fixed to the lower end of the piston rod of the pneumatic cylinder (51). A storage cavity (531) for fixing the brake pad is provided in the lower end surface of the push seat (53). A plurality of ventilation grooves (601) distributed circumferentially with the axis of the friction plate (60) as the center are provided in the friction plate (60). The ventilation groove (601) is opened at one end away from the axis of the friction plate (60). The upper and lower end surfaces of the friction plate (60) are provided with a plurality of ventilation holes (602) connected to the ventilation grooves (601).

2. A brake pad wear resistance detection device according to claim 1, characterized in that: A fixed guard plate (25) is fixedly provided on the upper end surface of the workbench (20). Both ends of the workbench (20) are fixedly provided on two arc-shaped vertical plates (21). The upper edge of the fixed guard plate (25) is located on the lower side of the friction disk (60). A movable guard plate (23) opposite to the fixed guard plate (25) is detachably connected between the two arc-shaped vertical plates (21). The outer periphery of the movable guard plate (23), the fixed guard plate (25) and the two arc-shaped vertical plates (21) forms a circular ring with the same diameter as the friction disk (60). A heat dissipation zone is formed between the circular ring, the friction disk (60) and the workbench (20). An exhaust fan (30) is fixedly provided on the upper end surface of the arc-shaped vertical plate (21). Air in the heat dissipation zone is discharged as the exhaust fan (30) rotates.

3. A brake pad wear resistance detection device according to claim 2, characterized in that: A notch (24) is provided on the outer circumference of the movable guard plate (23), the lower end of the notch (24) is open, and the notch (24) is sleeved on the outer circumference of the exhaust fan (30).

4. A brake pad wear resistance detection device according to claim 2, characterized in that: A connecting groove (212) is provided on one side of the arc-shaped vertical plate (21) close to the movable guard plate (23), the upper end of the connecting groove (212) is open, and the cross section of the connecting groove (212) is in the shape of an "I" character. A clamping strip (28) is fixedly provided on both side edges of the movable guard plate (23) close to the arc-shaped vertical plate (21), the cross section of the clamping strip (28) is consistent with that of the connecting groove (212), and the clamping strip (28) can be embedded in the connecting groove (212).

5. The brake pad wear resistance detection device according to claim 1, characterized in that: A support sleeve (26) is fixed to the upper end surface of the workbench (20), a central shaft (80) is rotatably connected inside the support sleeve (26), the central shaft (80) passes through the friction disc (60) along the axis of the friction disc (60) and is fixedly connected to the friction disc (60), the friction disc (60) is provided with a clamping seat (70) abutting against the upper and lower sides thereof, the clamping seat (70) is provided with a support seat (72) on the side away from the friction disc (60), and the clamping seat (70) and the support seat (72) are close to each other on one side. A ball groove (73) is provided on each of the clamping seat (70) and the support seat (72). A plurality of balls (71) rolling in the ball groove (73) are provided between the clamping seat (70) and the support seat (72). The support seat (72) on the lower side abuts against the support sleeve (26), and the support seat (72) on the upper side abuts against the fixed plate (40). The central axis (80) passes through the support seat (72) and the clamping seat (70). A motor (90) is fixed to the lower end surface of the workbench (20), and the central axis (80) is fixedly connected to the rotating shaft of the motor (90).

6. A brake pad wear resistance detection device according to claim 5, characterized in that: A plurality of positioning blocks (61) are fixedly disposed on one side of the friction disk (60) close to the clamping seat (70) and distributed circumferentially around the central axis (80); a plurality of positioning grooves (701) corresponding to the positioning blocks (61) are formed on one side of the clamping seat (70) close to the friction disk (60); and the positioning blocks (61) are embedded in the positioning grooves (701).

7. A brake pad wear resistance detection device according to claim 1, characterized in that: A downwardly recessed slot (211) is formed at the upper end of the arc-shaped vertical plate (21), and both ends of the fixing plate (40) can be embedded in the slot (211). A threaded hole is formed on the bottom wall of the slot (211), and through holes are formed at both ends of the fixing plate (40). The two ends of the fixing plate (40) are fixed to the slot (211) by threaded connection between bolts and the threaded holes.

8. The brake pad wear resistance detection device according to claim 1, characterized in that: A plurality of reinforcing ribs (54) are fixed to the lower end surface of the top plate (50).

9. A brake pad wear resistance detection device according to claim 1, characterized in that: A plurality of guide rods (52) are fixed to the upper end surface of the pushing seat (53), and the guide rods (52) extend upward, penetrate the top plate (50), and are slidably connected to the top plate (50).

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