Brake disc dragging torque and contour detection equipment

Abstract

The invention discloses brake disc dragging torque and contour detection equipment, relates to the technical field of dragging torque of automobile brake discs, and solves the problem that an automobile brake is inconvenient to test. The detection equipment comprises a positioning clamp; a torque sensor; a transmission pusher dog; the driving mechanism is in transmission connection with one end, far away from the transmission pusher dog, of the torque sensor and is used for driving the transmission pusher dog to rotate; a high-pressure gas control system; and the contour testing plate can rotate along with the transmission pusher dog, the contour testing plate is provided with a testing groove of which the shape is matched with the appearance of the calipers, and the calipers can penetrate through the testing groove in the rotating process of the contour testing plate. The dragging torque and the outer contour of the brake disc can be automatically detected, accurate measurement data are generated and recorded by a production management system, data tracing is formed, the torque is measured by a high-precision dynamic torque sensor, and the data are accurate and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of drag torque of automobile brake discs, in particular to a brake disc drag torque and profile detection device. Background Art

[0002] The braking system of a car mainly consists of the brake pedal, brake master cylinder, brake pipe, brake cylinder, brake disc (i.e. brake disc), caliper, etc. The brake pedal starts the braking process, the brake master cylinder transmits the pressure to the brake pipe, and then the brake cylinder converts the pressure into mechanical force to act on the caliper. The friction pad in the caliper will clamp the brake disc, generating friction to slow down.

[0003] After the car brakes, if the brake caliper friction pad is not completely returned to its original position, it will cause residual torque due to continuous contact with the brake disc, which will reduce driving power, affect driving experience and fuel economy, and may even cause continuous overheating of the brake disc, affecting braking performance and causing brake failure. Over time, it will cause significant wear to the friction pad, requiring replacement of the friction pad or brake disc.

[0004] The traditional method is to manually rotate the wheel and provide pressure to the caliper through the oil circuit, so that the friction pad in the caliper clamps the brake disc for testing. This method is simple but relies on manual labor, is cumbersome to operate, and is inefficient. Manually rotating the wheel is laborious, and has poor reliability and traceability, and cannot accurately determine the drag torque of the brake disc. At the same time, if the outer contour of the brake exceeds the design specifications, it will affect the installation and vehicle performance, and may cause failures. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and to design a brake disc drag torque and profile detection device to solve the problem of inconvenience in automobile brake testing.

[0006] The technical solution of the present invention to achieve the above-mentioned purpose is a brake disc drag torque and profile detection device, comprising: A positioning fixture, used for positioning a brake product, wherein the brake product includes a caliper and a brake disc; Torque sensor, used to measure the drag torque of the brake disc, analyze and record it; A transmission finger, the transmission finger is in transmission connection with one end of the torque sensor, the transmission finger can be close to or away from the center position of one side of the brake disc, and the transmission finger can drive the brake disc to rotate during the rotation process; A driving mechanism, the driving mechanism is drivingly connected to an end of the torque sensor away from the transmission finger, and is used to drive the transmission finger to rotate; High-pressure gas control system, which can be connected to the caliper, used to provide power for the caliper, and control the caliper to clamp or release the brake disc. Profile test plate, which can rotate together with the transmission pawl. The profile test plate has a test groove whose shape is adapted to the outer shape of the caliper, and the caliper can pass through the test groove during the rotation of the profile test plate.

[0007] Furthermore, it further includes: Base plate, on which the drive mechanism is installed; Base, the base plate is slidably connected to the slide rail fixed on the base; Forward extension control mechanism, which is drivingly connected to the base plate and used to control the transmission pawl to approach or move away from the brake disc.

[0008] Furthermore, the forward extension control mechanism includes a cylinder and a cylinder fixing plate. The cylinder fixing plate is fixedly installed on one side of the base plate, the cylinder is installed on the cylinder fixing plate, and the output end of the cylinder is fixedly connected to a connecting piece fixed on one side of the base plate.

[0009] Furthermore, a front limit piece and a rear limit piece are arranged on one side of the base, a blocking block is arranged on one side of the base plate, the blocking block is located between the front limit piece and the rear limit piece, and the front limit piece and the rear limit piece are located on the moving path of the blocking block.

[0010] Furthermore, a mounting seat is arranged on the base plate. The output end of the torque sensor is rotationally connected to the mounting seat through a bearing, and proximity sensors are arranged on both sides of the mounting seat. The proximity sensors are located on the rotation path of the profile test plate.

[0011] Furthermore, the drive mechanism includes a servo motor, a speed reducer, and an electromagnetic clutch. The output end of the servo motor is drivingly connected to the input end of the speed reducer, the output end of the speed reducer is drivingly connected to the input end of the electromagnetic clutch through a coupling, the output end of the electromagnetic clutch is drivingly connected to one end of the torque sensor through a coupling, and the other end of the torque sensor is connected to the transmission pawl.

[0012] Furthermore, the transmission pawl includes a main body and a plurality of pawls. The plurality of pawls are evenly fixed on the outer peripheral surface of the main body, and the pawls can contact the side of the bolt on the brake disc.

[0013] Furthermore, a clamping block is arranged between the plurality of pawls. The clamping block is connected to the main body through a connecting rod, and the clamping block can frictionally contact the central part on one side of the brake disc and clamp the brake disc.

[0014] Further, the profile test plate is located on one side of the transmission pawl, and the profile test plate is connected to the output end of the torque sensor through a connecting plate.

[0015] Further, the positioning fixture is provided with a plurality of supporting parts for supporting the brake and a plurality of pressing mechanisms for positioning and pressing the brake.

[0016] Compared with the prior art, the beneficial effects are as follows: The detection device of the present invention can automatically detect the drag torque of the brake disc and the outer contour of the caliper, generate accurate measurement data, and record it by the production management system to form data traceability. After the brake product is positioned and fixed by the positioning fixture, the transmission pawl will approach the center position of the brake disc, and then the transmission pawl is driven to rotate by the driving mechanism. The transmission pawl drives the brake disc to rotate. The high-pressure gas control system will control the caliper to clamp or release the brake disc. During the rotation process, the torque sensor will detect the drag torque of the brake disc, and the data is accurate and reliable, effectively ensuring the quality and performance of the automotive brake and improving traffic safety. The profile test plate is provided with test grooves whose shapes are adapted to the outer contour of the caliper. The profile test plate will rotate together with the transmission pawl. During the rotation process, if the caliper can smoothly pass through the test grooves on the profile test plate, it means that the outer contour size of the caliper is qualified, otherwise it is unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the brake disc drag torque and profile detection device in the present invention; Figure 2 is a schematic diagram of the cooperation of the driving mechanism, torque sensor, transmission pawl, profile test plate and positioning fixture; Figure 3 is a schematic installation structure diagram of the driving mechanism, torque sensor, transmission pawl and profile test plate; Figure 4 is a schematic structural diagram of the high-pressure gas control system; Figure 5 is a test state diagram when the brake is clamped by the positioning fixture.

[0018] In the figure, 1 is the main body carrier of the equipment; 2 is the protective cover; 3 is the high-pressure gas control system; 31 is the high-pressure air inlet pipe; 32 is the opening and closing valve; 33 is the high-pressure pressure regulator; 34 is the high-pressure solenoid valve; 35 is the fixing plate; 36 is the high-pressure air outlet pipe; 4 is the positioning fixture; 41 is the support part; 42 is the pressing mechanism; 5 is the operation screen; 6 is the operation display screen; 7 is the status indicator light; 8 is the driving mechanism; 81 is the servo motor; 82 is the speed reducer; 83 is the electromagnetic clutch; 9 is the torque sensor; 10 is the transmission pawl; 101 is the main body; 102 is the pawl; 11 is the contour test plate; 111 is the test groove; 12 is the base; 13 is the bottom plate; 14 is the cylinder; 15 is the cylinder fixing plate; 16 is the rear limit piece; 17 is the front limit piece; 18 is the blocking block; 19 is the mounting seat; 20 is the proximity sensor; 21 is the clamping block; 22 is the caliper; 23 is the brake disc. Detailed implementation mode

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 shown, this embodiment proposes a brake disc drag torque and contour detection device. This detection device can automatically detect the drag torque of the brake disc 23 and the outer contour of the caliper 22, generate accurate measurement data, and record it by the production management system to form data traceability. The torque is measured by the high-precision dynamic torque sensor 9, and the data is accurate and reliable.

[0021] Referring to Figures 1 - 3 , this detection device mainly consists of components such as the main body carrier 1 of the equipment, the protective cover 2, the positioning fixture 4, the driving mechanism 8, the torque sensor 9, the transmission pawl 10, the contour test plate 11, and the high-pressure gas control system 3. Among them, the main body carrier 1 of the equipment is used to carry the entire equipment, and the equipment electrical control system and storage equipment components are installed inside to realize the operation control and data management of the equipment.

[0022] The protective cover 2 is installed on the main body carrier 1 of the equipment to protect the internal structure. The positioning fixture 4, the driving mechanism 8, the torque sensor 9, the transmission pawl 10, and the contour test plate 11 are all located inside the protective cover 2.

[0023] The brake mainly consists of a brake disc 23 and a caliper 22. The high-pressure gas control system 3 is located at the top of the protective cover 2 and is used to provide high-pressure gas to the brake to be detected, that is, to provide power to the caliper 22 to control its clamping or loosening of the brake disc 23.

[0024] A base 12 is installed on the device main body carrier 1. A slide rail is provided on the base 12. The bottom plate 13 is horizontally slidably connected to the slide rail through a slider, and the sliding direction is away from or close to the brake product to be detected.

[0025] As Figure 2 , Figure 3 shown, a driving mechanism 8 is installed on the bottom plate 13. The driving mechanism 8 is mainly composed of a servo motor 81, a speed reducer 82, and an electromagnetic clutch 83. Among them, the speed reducer 82 is fixedly installed on the motor fixing plate 35, the electromagnetic clutch 83 is fixedly installed on the bottom plate 13, the output end of the servo motor 81 is connected to the input end of the speed reducer 82, and the output end of the speed reducer 82 is drivingly connected to the input end of the electromagnetic clutch 83 through a coupling.

[0026] An installation seat 19 is also installed on the bottom plate 13. The output end of the electromagnetic clutch 83 is drivingly connected to the input end of the torque sensor 9 through a coupling. The output end of the torque sensor 9 passes through the installation seat 19 and is rotatably connected to the installation seat 19, and then is drivingly connected to the transmission pawl 10. The profile test plate 11 is also connected to the output end of the torque sensor 9. The servo motor 81 provides the power required for the rotation of the test mechanism and precisely controls the rotation speed and position. After the servo motor 81 works, the power will finally be transmitted to the transmission pawl 10, drive the transmission pawl 10 and the profile test plate 11 to rotate, and then drive the brake disc 23 to rotate by the transmission pawl 10.

[0027] The electromagnetic clutch 83 is used to control the on-off of the transmission, and realize the on-off of the transmission from the power system to the transmission pawl 10 and the profile test plate 11.

[0028] In this embodiment, the torque sensor 9 used is a high-precision dynamic torque sensor 9, which is used to measure the drag torque of the brake disc 23 and perform analysis and recording.

[0029] As Figure 2 , Figure 3 shown, a front extension control mechanism is also provided on one side of the base 12, which is used to control the transmission pawl 10 to approach or move away from the brake disc 23. The front extension control mechanism is composed of a cylinder 14 and a cylinder fixing plate 15. The cylinder fixing plate 15 is fixed on the side of the base 12. The cylinder 14 is horizontally and fixedly installed on the cylinder fixing plate 15. The output end of the cylinder 14 is fixedly connected to the side of the bottom plate 13 through a connecting piece. The bottom plate 13 is controlled to horizontally slide along the slide rail by the cylinder 14, driving the transmission pawl 10 to move.

[0030] As Figure 2As shown, a front stopper 17 and a rear stopper 16 are further provided on one side of the base 12, and correspondingly, a stopper 18 is installed on one side of the bottom plate 13, and the front stopper 17 and the rear stopper 16 are located at the front and rear sides of the moving path of the stopper 18. When the cylinder 14 controls the bottom plate 13 to move, the stopper 18 cooperates with the front stopper 17 and the rear stopper 16 to limit the forward and backward moving distance of the transmission finger 10.

[0031] like Figure 3 As shown, the transmission finger 10 is composed of a main body 101 and a plurality of fingers 102. The main body 101 is circular, and the plurality of fingers 102 are evenly fixed on the outer peripheral surface of the main body 101 by screws. The finger 102 is in a Z shape, and corresponds to the bolts at the center of one side of the brake disc 23 one by one.

[0032] One side of the brake disc 23 has a plurality of mounting bolts for mounting the brake disc 23 on the automobile. Both sides of each pusher dog 102 are planes so that the pusher dog 102 can contact with the bolt plane without slipping and misalignment.

[0033] The forward extension control mechanism controls the transmission finger 10 to move forward and approach the brake disc 23. The multiple fingers 102 on the transmission finger 10 will respectively approach the sides of the bolts on the brake disc 23. Then the servo motor 81 drives the transmission finger 10 to rotate, and the transmission finger 10 will drive the brake disc 23 to rotate.

[0034] During the rotation of the brake disc 23, the high-pressure gas control system 3 will provide high-pressure gas to the caliper 22 to control the caliper 22 to work, and the caliper 22 will clamp the brake disc 23 to brake. Then the caliper 22 is controlled to release the brake disc 23, and the torque sensor 9 will measure the drag torque of the brake disc 23, analyze and record it, and determine whether the brake can brake effectively and whether the caliper 22 and the brake disc 23 are installed in place.

[0035] If the drag torque measured by the torque sensor 9 becomes larger, it means that the friction plate of the caliper 22 is in continuous contact with the brake disc 23 and the caliper 22 and the brake disc 23 are not properly installed.

[0036] Continue to refer Figure 3 In order to ensure the smooth rotation of the brake disc 23, a clamping block 21 is provided between the plurality of pusher fingers 102. The clamping block 21 is circular and connected to the main body 101 through a connecting rod. When the transmission pusher finger 10 approaches the brake disc 23, the clamping block 21 will contact the central part of one side of the brake disc 23 and clamp the brake disc 23. The clamping block 21 and the transmission pusher finger 10 cooperate to drive the brake disc 23 to rotate.

[0037] Proximity sensors 20 are provided on both sides of the mounting base 19. Both proximity sensors 20 are located on the rotation path of the profile test plate 11 and are used to detect the rotation position of the profile test plate 11 to prevent the profile test plate 11 from over-rotating and colliding with the product and the positioning fixture 4.

[0038] A proximity sensor 20 is also provided on the upper side of the mounting base 19 to detect whether there is a bolt at the position corresponding to the proximity sensor 20 in front of the proximity sensor 20 on the brake disc 23, so that when the transmission pawl 10 approaches the brake disc 23, it will not conflict with or collide with the bolt on the brake disc 23.

[0039] As Figure 2 、 Figure 3 shown, the profile test plate 11 is located on one side of the transmission pawl 10. One end of the profile test plate 11 is connected to the output end of the torque sensor 9 through a connecting plate. A groove is formed at one end of the profile test plate 11 away from the torque sensor 9 to form a test groove 111. One side of the test groove 111 is open to serve as a relief. The shape of the test groove 111 is a profiling design, and its shape is adapted to the outer contour shape of the caliper 22 to test whether the product profile is qualified.

[0040] The profile test plate 11 will rotate together with the transmission pawl 10. During the rotation, the caliper 22 with a qualified outer contour can smoothly pass through the test groove 111 on the profile test plate 11, while the unqualified one will block the profile test plate 11 and cannot pass through the profile test plate 11.

[0041] As Figure 4 shown, the high-pressure gas control system 3 in this embodiment mainly consists of a high-pressure inlet pipe 31, an opening and closing valve 32, a high-pressure pressure regulating valve 33, a high-pressure solenoid valve 34, a fixing plate 35, and a high-pressure outlet pipe 36. Among them, the opening and closing valve 32 is installed on the high-pressure inlet pipe 31 to control the on-off of the high-pressure gas. The high-pressure inlet pipe 31 is connected to the high-pressure pressure regulating valve 33. The high-pressure inlet pipe 31 accesses high-pressure gas for use by the caliper 22 and is made of stainless steel material that can withstand high pressure and corrosion resistance. The high-pressure pressure regulating valve 33 is used to adjust the gas pressure input to the caliper 22.

[0042] The high-pressure pressure regulating valve 33 is connected to the high-pressure solenoid valve 34 through a pipeline. The high-pressure solenoid valve 34 is installed and fixed on the fixing plate 35, and the fixing plate 35 is fixed on the top of the protective cover 2. The electrical control system controls the on-off of the high-pressure gas by controlling the high-pressure solenoid valve 34. The high-pressure solenoid valve 34 is then connected to the caliper 22 through the high-pressure outlet pipe 36 to provide high-pressure gas as power for the caliper 22. The high-pressure outlet pipe 36 accesses a quick-sealing valve to supply high-pressure gas to the brake to control the opening and closing of the caliper 22.

[0043] The existing caliper 22 is installed on a vehicle and powered by high-pressure hydraulic fluid in the vehicle to control the operation of the caliper 22. This device uses high-pressure gas as the power to control the operation of the caliper 22, which is simple and convenient.

[0044] As Figure 2 , Figure 5 As shown, the positioning fixture 4 is used to firmly fix and position the brake product into a state convenient for testing, and can be compatible with brakes of various sizes. The positioning fixture 4 has a plurality of support portions 41 for supporting the brake and a plurality of pressing mechanisms 42 for positioning and pressing the brake. The pressing mechanism 42 will cooperate with the round holes on the brake, and the positioning pins of the pressing mechanism 42 will be inserted into the round holes for positioning, and then press down for pressing. The positioning fixture 4 can be adapted to brakes of various sizes.

[0045] As Figure 1 As shown, an operation screen 5 and an operation display screen 6 are also provided on the outer side of the protective cover 2. The operation screen 5 is a touch-type operation screen, which is convenient for the operation and debugging of the device and the modification and adjustment of parameters. The operation display screen 6 serves as an electronic bulletin board for personnel to view, giving personnel standard operation guidance.

[0046] A running status indicator light 7 is also provided on the top of the protective cover 2. The current running status of the device is indicated by indicator lights of different colors, and personnel can quickly know the current running status of the device.

[0047] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made by those skilled in the art to some parts thereof all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A braking disc drag torque and profile detection device, characterized in that, include: A positioning fixture (4) for positioning a brake product, wherein the brake product comprises a caliper (22) and a brake disc (23); A torque sensor (9) is used to measure the drag torque of the brake disc (23), analyze and record it; A transmission finger (10), the transmission finger (10) being transmission-connected to one end of the torque sensor (9), the transmission finger (10) being able to approach or move away from a center position of one side of the brake disc (23), and the transmission finger (10) being able to drive the brake disc (23) to rotate during the rotation process; A driving mechanism (8), the driving mechanism (8) being in driving connection with an end of the torque sensor (9) away from the transmission finger (10), and being used for driving the transmission finger (10) to rotate; A high-pressure gas control system (3), wherein the high-pressure gas control system (3) can be connected to the caliper (22) and is used to provide power to the caliper (22) and control the caliper (22) to clamp or release the brake disc (23); A contour test plate (11), the contour test plate (11) being capable of rotating together with the transmission finger (10), the contour test plate (11) being provided with a test slot (111) whose shape matches the outer shape of the caliper (22), and the caliper (22) being capable of passing through the test slot (111) during the rotation of the contour test plate (11).

2. The brake disc drag torque and profile detection device according to claim 1, wherein Also includes: A bottom plate (13), wherein the driving mechanism (8) is mounted on the bottom plate (13); A base (12), wherein the bottom plate (13) is slidably connected to a slide rail fixed on the base (12); A forward extension control mechanism is drivingly connected to the base plate (13) and is used to control the transmission finger (10) to approach or move away from the brake disc (23).

3. The a brake disc drag torque and profile detection device according to claim 2, characterized in that, The forward extension control mechanism comprises a cylinder (14) and a cylinder fixing plate (15), wherein the cylinder fixing plate (15) is fixedly mounted on one side of the base plate (13), the cylinder (14) is mounted on the cylinder fixing plate (15), and the output end of the cylinder (14) is fixedly connected to a connecting piece fixed on one side of the base plate (13).

4. The braking disc drag torque and profile detection device according to claim 3, characterized in that, A front limiter (17) and a rear limiter (16) are provided on one side of the base (12), and a blocking block (18) is provided on one side of the bottom plate (13); the blocking block (18) is located between the front limiter (17) and the rear limiter (16); and the front limiter (17) and the rear limiter (16) are located on a moving path of the blocking block (18).

5. The braking disc drag torque and profile detection device according to claim 2, characterized in that, A mounting seat (19) is arranged on the base plate (13), an output end of the torque sensor (9) is rotatably connected to the mounting seat (19) via a bearing, proximity sensors (20) are arranged on both sides of the mounting seat (19), and the proximity sensors (20) are located on the rotation path of the contour test plate (11).

6. The a brake disc drag torque and profile detection device according to claim 1, wherein The driving mechanism (8) includes a servo motor (81), a speed reducer (82) and an electromagnetic clutch (83). The output end of the servo motor (81) is drivingly connected to the input end of the speed reducer (82). The output end of the speed reducer (82) is drivingly connected to the input end of the electromagnetic clutch (83) through a coupling. The output end of the electromagnetic clutch (83) is drivingly connected to one end of the torque sensor (9) through a coupling. The other end of the torque sensor (9) is connected to the transmission pawl (10).

7. A brake disc drag torque and profile detection device according to claim 1, characterized in that, The transmission pawl (10) includes a main body (101) and a plurality of pawls (102). The plurality of pawls (102) are uniformly fixed on the outer peripheral surface of the main body (101). The pawl (102) can contact the side of the bolt on the brake disc (23).

8. A brake disc drag torque and profile detection device according to claim 7, characterized in that, A clamping block (21) is arranged between the plurality of pawls (102). The clamping block (21) is connected to the main body (101) through a connecting rod. The clamping block (21) can frictionally contact the central part on one side of the brake disc (23) and clamp the brake disc (23).

9. A braking disc drag torque and profile detection device according to claim 1, characterized in that, The profile test plate (11) is located on one side of the transmission pawl (10). The profile test plate (11) is connected to the output end of the torque sensor (9) through a connecting plate.

10. The brake disc drag torque and profile detection device according to claim 1, characterized in that, The positioning fixture (4) has a plurality of supporting parts (41) for supporting the brake and a plurality of pressing mechanisms (42) for positioning and pressing the brake.

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