Brake pad quality testing device

Abstract

The utility model relates to a brake pad quality testing device, which comprises a detection table, a vacuum pump fixedly arranged on the front side of the top of the detection table, a vacuum pipe upwards communicated with an extraction opening of the vacuum pump, an exhaust valve communicated with the side part of the vacuum pipe, a lower flange arranged on the top of the vacuum pipe, an upper flange correspondingly arranged above the lower flange and communicated with the lower flange through a telescopic corrugated pipe, a plurality of first hydraulic cylinders are arranged at the top of the lower flange on the peripheral side of the telescopic corrugated pipe, piston rods of the first hydraulic cylinders face upwards and are fixedly connected with the upper flange, the top of the upper flange communicates with a suction cup, a bearing seat is detachably arranged above the vacuum pump, and a limiting groove matched with a back plate of the brake pad is formed in the top of the bearing seat; a through hole communicated to the bottom of the bearing seat is formed in the groove bottom of the limiting groove, and the suction cup extends into and can penetrate through the through hole. According to the utility model, the brake pads of different specifications can be rapidly limited, the surface flatness can be automatically detected, and the brake pad surface flatness detection device is more practical.

Description

Technical Field

[0001] This utility model belongs to the field of brake pad quality inspection technology, specifically relating to a brake pad quality testing device. Background Technology

[0002] Currently, common quality inspection items for automotive brake pads mainly include friction coefficient testing, wear rate testing, thermal fade performance testing, noise testing, hardness testing, thickness testing, surface quality testing, and material composition testing. Among these, brake pad surface quality testing primarily involves inspecting the surface flatness, cracks, and porosity of the friction blocks on the brake pad to ensure that surface defects do not lead to braking failure during use. However, current methods for testing the surface flatness of the friction blocks on brake pads typically involve placing the brake pad on a testing platform and then manually moving it using a dial indicator or other measuring tools. This process is cumbersome, inconvenient, and susceptible to operator skill, resulting in inaccurate test results and requiring improvement. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a brake pad quality testing device that can realize the rapid positioning and automatic detection of surface flatness of brake pads of different specifications, so as to solve the above problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a brake pad quality testing device, comprising a testing platform, a vacuum pump fixedly mounted on the front side of the top of the testing platform, the vacuum pump having an upward-facing suction port and a fixedly connected vacuum tube, an exhaust valve connected to the side of the vacuum tube, and a lower flange fixedly mounted on the top, with an upper flange correspondingly mounted above the lower flange, the upper flange being connected to the lower flange via a coaxially arranged telescopic bellows, a plurality of first hydraulic cylinders fixedly mounted on the top of the lower flange on the periphery of the telescopic bellows, the piston rods of the first hydraulic cylinders facing upward and fixedly connected to the bottom of the upper flange, a suction cup with its large-diameter end facing upward fixedly connected to the top of the upper flange, a support seat above the vacuum pump, a limiting groove adapted to the back plate of the brake pad being opened on the top of the support seat, a through hole connected to the bottom of the support seat being opened at the bottom of the limiting groove, the suction cup extending into and passing through the through hole, and the through hole having openings on the left and right sides. Each support base has a vertically fixed support plate at its bottom. The top of the corresponding testing platform has a positioning groove, and the bottom of the support plate is inserted into the corresponding positioning groove. A motor is fixed on the top of the testing platform on the side of the support plate away from the vacuum pump. The output shaft of the motor faces upward and is fixedly connected to a rotating plate. A slot is opened on the side of the support plate corresponding to the rotating plate, and the tail end of the rotating plate rotates into the slot. A rear end plate is vertically fixed at the rear end of the top of the testing platform. A top plate is horizontally fixed at the top of the rear end plate. A first guide rail is horizontally fixed at the bottom of the top plate along the left-right direction. A first electric slider is slidably mounted on the first guide rail. A second guide rail is horizontally fixed at the bottom of the first electric slider along the front-back direction. A second electric slider is slidably mounted on the second guide rail. A second hydraulic cylinder is vertically fixed at the bottom of the second electric slider. A dial indicator with its probe facing downward is fixedly connected to the piston rod of the second hydraulic cylinder.

[0005] Preferably, the outer diameter of the large-diameter end of the suction cup is adapted to the diameter of the through hole and is larger than the diameter of the upper flange.

[0006] Preferably, the support plate is adapted to the corresponding positioning groove.

[0007] Preferably, the slot is adapted to the rotation trajectory of the rotating plate.

[0008] Preferably, a protective box is fixed on the top of the test platform corresponding to the motor, the motor is placed in the corresponding protective box, and the output shaft of the motor extends upward out of the corresponding protective box.

[0009] The beneficial effects of this utility model are as follows: When testing the surface flatness of the friction block of a brake pad, the friction block of the brake pad can be placed facing upwards, and the back plate of the brake pad can be aligned with the limiting groove on the carrier seat and inserted into place. Then, a vacuum pump is run to create a vacuum, forming a negative pressure at the suction cup, which firmly holds the brake pad in place, thus achieving effective fixation of the brake pad. Next, the first and second electric sliders are operated sequentially to adjust the horizontal and vertical positions of the dial indicator until it is moved above one end of the friction block of the brake pad. Then, the second hydraulic cylinder is operated, extending its piston rod and moving the dial indicator downwards until the dial indicator probe contacts the friction block of the brake pad. Finally, the first or second electric slider is operated again to move the dial indicator horizontally or vertically on the friction block of the brake pad, thus achieving the detection of the surface flatness of the friction block of the brake pad. After testing, turn off the vacuum pump and open the exhaust valve to connect the vacuum tube to the outside, thus releasing the negative pressure gripping the brake pads. Then, operate the first hydraulic cylinder, utilizing the telescopic bellows's extension characteristics to lift the suction cup, allowing it to pass through the through hole and lift the brake pad, thus removing the tested brake pad. When the brake pad size changes, the entire carrier can be easily disassembled to ensure the corresponding limiting groove fits. Specifically: first, run the motor to rotate the rotating plate 180 degrees, turning the tail end of the rotating plate away from the support plate to release the locking of the support plate. Then, pull out the support plate to remove the original carrier. After obtaining the new compatible carrier, first align the support plate with the corresponding positioning groove and insert it into place, align the suction cup with the through hole and insert it into place. Then, run the motor to rotate the rotating plate another 180 degrees, causing the tail end of the rotating plate to engage in the corresponding slot, locking the support plate in place. This completes the fixed installation of the new carrier, ensuring a secure installation without affecting subsequent use. This enables rapid positioning and automatic detection of surface flatness for brake pads of different specifications. The overall operation is simpler and the detection is not dependent on the operator's skill level, resulting in more accurate detection results and greater flexibility and practicality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the front structure of the testing station of this utility model;

[0012] Figure 3 This is a schematic diagram of the main structure of the bearing seat of this utility model;

[0013] Figure 4 This is a top view of the bearing seat of this utility model;

[0014] Figure 5 This is a front view structural diagram of the connection between the bearing base and the front end of the testing platform of this utility model.

[0015] The following numbers are labeled in the diagram: 1 is the testing platform, 2 is the vacuum pump, 3 is the vacuum tube, 4 is the exhaust valve, 5 is the lower flange, 6 is the upper flange, 7 is the telescopic bellows, 8 is the first hydraulic cylinder, 9 is the suction cup, 10 is the bearing seat, 11 is the limiting groove, 12 is the through hole, 13 is the support plate, 14 is the positioning groove, 15 is the motor, 16 is the rotating plate, 17 is the slot, 18 is the rear end plate, 19 is the top plate, 20 is the first guide rail, 21 is the first electric slider, 22 is the second conductor, 23 is the second electric slider, 24 is the second hydraulic cylinder, 25 is the dial indicator, and 26 is the protective box. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] like Figures 1 to 5 As shown, a brake pad quality testing device includes a testing platform 1. A vacuum pump 2 is fixedly mounted on the front side of the top of the testing platform 1. The vacuum pump 2 has an upward-facing suction port and is fixedly connected to a vacuum tube 3. An exhaust valve 4 is connected to the side of the vacuum tube 3, and a lower flange 5 is fixedly mounted on its top. An upper flange 6 is correspondingly mounted above the lower flange 5. The upper flange 6 is connected to the lower flange 5 through a coaxially arranged telescopic bellows 7. Several first hydraulic cylinders 8 are fixedly mounted on the top of the lower flange 5 around the telescopic bellows 7. The piston rods of the first hydraulic cylinders 8 face upward and are fixedly connected to the bottom of the upper flange 6. A suction cup 9 with its large-diameter end facing upward is fixedly connected to the top of the upper flange 6. A support seat 10 is provided above the vacuum pump 2. A limiting groove 11 adapted to the rear end plate of the brake pad is opened on the top of the support seat 10. A through hole 12 connecting to the bottom of the support seat 10 is opened at the bottom of the limiting groove 11. The suction cup 9 extends into and can pass through the through hole 12. Support plates 13 are vertically fixed to the bottom of the bearing seats 10 on both sides of the through hole 12. The top of the detection table 1 corresponding to the support plate 13 is provided with a positioning groove 14, and the bottom of the support plate 13 is inserted into the corresponding positioning groove 14. A motor 15 is fixed to the top of the detection table 1 on the side of the support plate 13 away from the vacuum pump 2. The output shaft of the motor 15 faces upward and is fixedly connected to a rotating plate 16. A slot 17 is provided on the side of the support plate 13 corresponding to the rotating plate 16, and the tail end of the rotating plate 16 is rotated into the slot 17. A rear end plate 18 is vertically fixed at the rear end of the top of the testing table 1. A top plate 19 is horizontally fixed at the top of the rear end plate 18 facing forward. A first guide rail 20 is horizontally fixed at the bottom of the top plate 19 along the left and right direction. A first electric slider 21 is slidably mounted on the first guide rail 20. A second guide rail 22 is horizontally fixed at the bottom of the first electric slider 21 along the front and back direction. A second electric slider 23 is slidably mounted on the second guide rail 22. A second hydraulic cylinder 24 is vertically fixed at the bottom of the second electric slider 23. A dial indicator 25 with the probe facing downward is fixedly connected to the piston rod of the second hydraulic cylinder 24 facing downward.

[0018] When testing the surface flatness of the brake pad friction block, first position the brake pad friction block upwards and align the brake pad backing plate with the limiting groove 11 on the carrier 10 for insertion. Then, run the vacuum pump 2 to create a vacuum, forming a negative pressure at the suction cup 9 to firmly hold the brake pad in place, thus effectively fixing it. Next, operate the first electric slider 21 and the second electric slider 23 sequentially to adjust the horizontal and vertical position of the dial indicator 25 until it is moved above one end of the brake pad friction block. Then, operate the second hydraulic cylinder 24 to extend its piston rod, causing the dial indicator 25 to move downwards until its probe contacts the brake pad friction block. Then, operate the first electric slider 21 or the second electric slider 23 again to move the dial indicator 25 horizontally or vertically on the brake pad friction block, thus achieving the test of the surface flatness of the brake pad friction block. After the test is completed, turn off the vacuum pump 2 and open the exhaust valve 4 to connect the vacuum tube 3 to the outside, thereby releasing the negative pressure gripping the brake pad. Then, run the first hydraulic cylinder 8, which, in conjunction with the telescopic bellows 7, will drive the suction cup 9 to rise, allowing it to pass through the through hole 12 and lift the brake pad, thus removing the tested brake pad. When the size of the brake pad changes, the corresponding limiting groove 11 can be matched by easily disassembling and assembling the entire support seat 10. Specifically, first run the motor 15 to rotate the rotating plate 16 180 degrees, then rotate the tail end of the rotating plate 16 to the end away from the support plate 13 to release the locking of the support plate 13. Then, pull out the support plate 13 to remove the original support seat 10. After obtaining the new adapter carrier 10, first align the support plate 13 with the corresponding positioning slot 14 and insert it into place. Then, align the suction cup 9 with the through hole 12 and insert it into place. Next, run the motor 15 to rotate the rotating plate 16 180 degrees again, so that the tail end of the rotating plate 16 is engaged in the corresponding slot 17, locking the support plate 13 in place. This completes the fixed installation of the new carrier 10, ensuring a stable installation without affecting subsequent use. This allows for rapid positioning and automatic detection of surface flatness for brake pads of different specifications. The overall operation is simpler, and the detection is independent of the operator's skill level, resulting in more accurate detection results and greater flexibility and practicality.

[0019] In this embodiment, the outer diameter of the large-diameter end of the suction cup 9 is matched with the diameter of the through hole 12 and is larger than the diameter of the upper flange 6, so as to ensure that the suction cup 9 can pass smoothly through the through hole 12 and cooperate to lift and unload the brake pad after the test is completed.

[0020] In this embodiment, the support plate 13 is adapted to the corresponding positioning groove 14 to ensure the smooth insertion of the support plate 13 and to cooperate in positioning and installing the bearing seat 10.

[0021] In this embodiment, the rotation trajectory of the slot 17 and the rotating plate 16 are matched to ensure that the rotating plate 16 can be smoothly inserted into the slot 17, thereby achieving the fixed installation of the support seat 10.

[0022] In this embodiment, a protective box 26 is fixed on the top of the detection platform 1 corresponding to the motor 15. The motor 15 is placed in the corresponding protective box 26, and the output shaft of the motor 15 extends upward out of the corresponding protective box 26. This allows the motor 15 to be effectively protected by the protective box 26 in actual use, thereby ensuring the service life of the motor 15.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brake pad quality testing device comprising a test table, characterized in that, The front side of the top of the detection platform is fixed with a vacuum pump, the air outlet of the vacuum pump faces upward and is fixedly connected with a vacuum pipe, the side of the vacuum pipe is connected with an exhaust valve, the top of the lower flange is fixedly connected with an upper flange, the upper flange is communicated with the lower flange through the coaxially arranged telescopic bellows, the top of the lower flange of the telescopic bellows is fixedly connected with a plurality of first hydraulic cylinders, the piston rod of the first hydraulic cylinder faces upward and is fixedly connected with the bottom of the upper flange, the top of the upper flange is fixedly connected with a suction cup with the large-diameter end facing upward, the top of the bearing seat is provided with a limiting groove matched with the back plate of the brake pad, the bottom of the limiting groove is provided with a through hole connected to the bottom of the bearing seat, the suction cup extends into and can pass through the through hole, the bottom of the bearing seat on the left and right sides of the through hole is vertically fixed with a support plate, the top of the corresponding detection platform of the support plate is provided with a positioning groove, the bottom of the support plate is inserted into the corresponding positioning groove, the top of the detection platform on the side away from the vacuum pump of the support plate is fixedly connected with a motor, the output shaft of the motor faces upward and is fixedly connected with a rotating plate, the side of the corresponding support plate of the rotating plate is provided with a clamping groove, the tail end of the rotating plate is rotated into the clamping groove, the rear end of the top of the detection platform is vertically fixed with a rear end plate, the top of the rear end plate is horizontally fixed with a top plate facing forward, the bottom of the top plate is horizontally fixed with a first guide rail in the left-right direction, the first guide rail is slidably provided with a first electric sliding block, the bottom of the first electric sliding block is horizontally fixed with a second guide rail in the front-rear direction, the second guide rail is slidably provided with a second electric sliding block, the bottom of the second electric sliding block is vertically fixed with a second hydraulic cylinder, the piston rod of the second hydraulic cylinder faces downward and is fixedly connected with a dial gauge with a probe facing downward.

2. The brake pad mass testing apparatus of claim 1, wherein, The outer diameter of the large-diameter end of the suction cup is matched with the hole diameter of the through hole and is larger than the diameter of the upper flange.

3. The brake pad mass testing apparatus of claim 1, wherein, The support plate is matched with the corresponding positioning groove.

4. The brake pad mass testing apparatus of claim 1, wherein, The clamping groove is matched with the rotating track of the rotating plate.

5. The brake pad mass testing apparatus of claim 1, wherein, The corresponding detection platform of the motor is fixedly connected with a protective box, the motor is arranged in the corresponding protective box, and the output shaft of the motor extends out of the corresponding protective box.

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