Automobile brake detection device

Abstract

The utility model discloses an automobile brake detection device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with two short sleeves and two long sleeves, the two short sleeves are internally and slidably connected with short racks, the tops of the short racks are fixedly connected with a lifting frame, and the lifting frame is fixedly connected with a support. A clamping mechanism for placing the brake disc is arranged on the upper surface of the lifting frame, long racks are slidably connected into the two long sleeves, detection mechanisms for measuring the surface flatness of the brake disc are arranged at the tops of the long racks, and two linkage gears are arranged between the short sleeves and the long sleeves which are opposite through mounting assemblies. According to the utility model, the problems that the height of the fixing frame cannot be adjusted in the measurement process and the brake disc can only be measured after being raised by a worker can be solved, the brake disc can be more stably fixed, the detection accuracy is improved, the dial indicator can conveniently and comprehensively detect the brake disc, and the detection efficiency is improved. And the use effect of the detection device is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake testing technology, and in particular to an automotive brake testing device. Background Technology

[0002] Automotive brakes are the braking devices used in automobiles. Almost all automotive brakes are friction-type and can be divided into two main categories: drum brakes and disc brakes. The core components of a disc brake include the brake disc, brake caliper, piston and brake pads, hydraulic system, and support and adjustment components.

[0003] Brake discs inevitably undergo various deformations after casting, which greatly affects wheel balance. If not properly controlled, this can easily lead to car accidents. Therefore, the flatness of the brake disc is an important indicator for judging the product yield, and flatness needs to be measured during the brake disc processing.

[0004] The traditional method of measurement involves mounting a dial indicator on a fixed frame to measure the flatness of the brake disc's machined surface. However, the height of the fixed frame cannot be adjusted during the measurement process, requiring workers to elevate the brake disc before taking the measurement. To better address these issues, promote the development of industry technology, and enhance core competitiveness, this application proposes a new structural design that differs from existing technologies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automotive brake detection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vehicle brake testing device includes a base plate. Two short sleeves and two long sleeves are fixedly connected to the upper surface of the base plate. Short racks are slidably connected inside each of the two short sleeves. A lifting frame is fixedly connected to the top of each short rack. A clamping mechanism for placing the brake disc is provided on the upper surface of the lifting frame. Long racks are slidably connected inside each of the two long sleeves. A testing mechanism for measuring the flatness of the brake disc surface is provided on the top of each long rack. Two linkage gears are provided between the opposing short and long sleeves via an installation assembly. A clearance groove is provided on one side of each short and long sleeve. The linkage gears pass through the clearance grooves and mesh with the short and long racks. A self-locking hydraulic cylinder is fixedly connected to the upper surface of the base plate, and one end of the piston rod of the self-locking hydraulic cylinder is fixed to the lifting frame.

[0008] As a further embodiment of this utility model, the clamping mechanism includes a disc, which is rotatably connected to the upper surface of the lifting frame at the center position via a bearing. A cross-shaped groove is formed on the upper surface of the disc, and a bidirectional lead screw is rotatably connected to the cross-shaped groove via a bearing. Two threaded rods are rotatably connected to the cross-shaped groove via a bearing. One end of each of the two threaded rods is keyed to a bevel gear 1, and the outer side of the bidirectional lead screw is keyed to a bevel gear 2, which meshes with the two bevel gears 1. Multiple sliders are slidably connected in the cross-shaped groove, and an arc-shaped clamping plate is fixedly connected to the top of each slider. The bidirectional lead screw passes through two of the sliders and is threaded to them, and the two threaded rods pass through the other two sliders and are threaded to them respectively.

[0009] As a further embodiment of this utility model, one end of the bidirectional lead screw passes through the disc and is fixedly connected to a knob, and a locking nut is threaded onto the outer side of the bidirectional lead screw.

[0010] As a further embodiment of this utility model, the tops of the first bevel gear and the second bevel gear do not exceed the top of the cross-shaped groove, and the thread directions of the two threaded rods are the same.

[0011] As a further embodiment of this utility model, the testing mechanism includes a mounting frame, which is fixedly connected to the top of a long rack. A sliding groove is provided on one side of the mounting frame, and a slider is slidably connected in the sliding groove. A dial indicator is fixedly connected to one side of the slider, and the mounting frame is provided with a locking component for fixing the dial indicator.

[0012] As a further embodiment of this utility model, the locking assembly includes a locking screw, the top of the mounting bracket has a slot communicating with the slide groove, the top of the slider has a threaded hole, and the locking screw passes through the slot and is threadedly connected to the threaded hole.

[0013] As a further embodiment of this utility model, the mounting assembly includes two mounting plates, both of which are fixedly connected to the upper surface of the base plate. A connecting shaft is rotatably connected between the two mounting plates via a bearing, and both linkage gears are keyed to the outside of the connecting shaft.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By using a combination of short rack, long rack, and linkage gear, the brake disc is clamped and fixed by the clamping mechanism. The self-locking motor pushes the lifting frame upward. At this time, the combination of short rack, linkage gear, and long rack causes the detection mechanism to move downward and contact the brake disc, thereby detecting the surface of the brake disc. This solves the problem that the height of the fixed frame cannot be adjusted during the measurement process, and the brake disc can only be raised by the staff before measurement.

[0016] 2. By using the clamping components, the brake disc is clamped and fixed, thus preventing the brake disc from moving during the testing process. At the same time, the brake disc is clamped in four directions, which can fix the brake disc more stably and improve the accuracy of the test.

[0017] 3. By setting up the locking component, the slider is locked and fixed, which can change the horizontal position of the dial indicator, thereby facilitating the dial indicator to perform comprehensive testing of the brake disc and improving the effectiveness of the testing device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the front side of an automotive brake detection device proposed in this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the rear side of an automotive brake detection device proposed in this utility model.

[0020] Figure 3 This is an enlarged structural schematic diagram of the clamping mechanism of an automobile brake testing device proposed in this utility model;

[0021] Figure 4 This is an enlarged structural diagram of the detection mechanism of an automobile brake testing device proposed in this utility model;

[0022] Figure 5 This is an enlarged structural diagram of part A of the automobile brake detection device proposed in this utility model.

[0023] In the diagram: 1. Base plate; 2. Short sleeve; 3. Short rack; 4. Clamping mechanism; 5. Long sleeve; 6. Detection mechanism; 7. Long rack; 9. Mounting plate; 10. Lifting frame; 11. Self-locking hydraulic cylinder; 12. Linkage gear; 13. Connecting shaft; 14. Disc; 15. Cross-shaped groove; 16. Bevel gear one; 17. Threaded rod; 18. Double-acting screw; 19. Locking nut; 20. Bevel gear two; 21. Arc-shaped clamping plate; 22. Mounting frame; 23. Locking screw; 24. Groove; 25. Slide groove; 26. Dial indicator; 27. Slider. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-4 A vehicle brake testing device includes a base plate 1. Two short sleeves 2 and two long sleeves 5 are bolted to the upper surface of the base plate 1. Short racks 3 are slidably connected inside each of the two short sleeves 2. A lifting frame 10 is bolted to the top of each short rack 3. A clamping mechanism 4 for placing the brake disc is provided on the upper surface of the lifting frame 10. The clamping mechanism 4 includes a disc 14, which is rotatably connected to the center of the upper surface of the lifting frame 10 via bearings. A cross-shaped groove 15 is formed on the upper surface of the disc 14. A double-acting lead screw 18 is rotatably connected via bearings. Two threaded rods 17 are rotatably connected via bearings within a cross-shaped groove 15. One end of each threaded rod 17 is keyed to a bevel gear 16. A second bevel gear 20 is keyed to the outer side of the double-acting lead screw 18, and the second bevel gear 20 meshes with the two bevel gears 16. Multiple sliders are slidably connected within the cross-shaped groove 15, and each slider has an arc-shaped clamp 21 welded to its top. The double-acting lead screw 18 passes through two of the sliders and is threaded to them, while the two threaded rods 17 pass through the other two sliders respectively. And it is threadedly connected to it. The tops of bevel gear 16 and bevel gear 20 do not exceed the top of the cross groove 15. The threads of the two threaded rods 17 are in the same direction. Place the brake disc on the disc 14, and then rotate the double-acting screw 18. The double-acting screw 18, through threaded engagement with the two sliders, will cause the two arc-shaped clamps 21 to move towards each other along the cross groove 15. At the same time, the double-acting screw 18 will drive bevel gear 20 to rotate. Bevel gear 20, through engagement with the two bevel gears 16, will drive the two threaded rods 17 to move towards each other. The rotation in the opposite direction, and since the threads of the two threaded rods 17 are in the same direction, and the thread pitch between the two threaded rods 18 and the two threaded rods 17 is the same, the two threaded rods 17, through thread engagement with the other two sliders, will cause the other two arc-shaped clamping plates 21 to move in opposite directions. This allows multiple arc-shaped clamping plates 21 to move synchronously and clamp and fix the brake disc in four directions, thereby ensuring that the center of the brake disc is coaxial with the center of the disc 14, and can fix the brake disc more stably, improving the accuracy of the detection.

[0026] One end of the double-acting lead screw 18 passes through the disc 14 and is welded with a knob. The outer side of the double-acting lead screw 18 is threaded with a locking nut 19. After the brake disc is clamped and fixed, the locking nut 19 is tightened to fix the double-acting lead screw 18, thereby preventing the arc-shaped clamp 21 from moving.

[0027] In this invention, two long sleeves 5 are each slidably connected to a long rack 7. The top of each rack 7 is equipped with a testing mechanism 6 for measuring the flatness of the brake disc surface. The testing mechanism 6 includes a mounting bracket 22, which is bolted to the top of the rack 7. A groove 25 is provided on one side of the mounting bracket 22, and a slider 27 is slidably connected within the groove 25. A dial indicator 26 is bolted to one side of the slider 27, and the test probe of the dial indicator 26 is coaxial with the center of the disc 14. The mounting bracket 22 is equipped with a locking assembly for securing the dial indicator 26. Two linkage gears 12 are provided between the opposing short sleeve 2 and long sleeve 5 via a mounting assembly. The mounting assembly includes two mounting plates 9, both welded to the upper surface of the base plate 1. A connecting shaft 13 is rotatably connected between the two mounting plates 9 via bearings. The two linkage gears 12 are keyed to the outside of the connecting shaft 13. A clearance groove is provided on one side of both the short sleeve 2 and the long sleeve 5. The linkage gears 12 pass through the clearance groove and mesh with the short rack 3 and the long rack 7. A self-locking hydraulic cylinder 11 is fixed to the upper surface of the base plate 1 by bolts. One end of the plunger is fixed to the lifting frame 10. The self-locking hydraulic cylinder 11 is model HFG1504. When testing is required, the self-locking hydraulic cylinder 11 is activated to move upward. The self-locking hydraulic cylinder 11 pushes the lifting frame 10 upward, which in turn moves the brake disc upward and the two short racks 3 upward. The two short racks 3 mesh with the two linkage gears 12, which in turn rotate the two linkage gears 12. The linkage gears 12 then move the two long racks 7 downward, which in turn move the mounting bracket 22 downward, thereby causing the piston rod to move upward. The dial indicator 26 moves downwards. When the test needle of the dial indicator 26 contacts the machined surface of the brake disc, the self-locking hydraulic cylinder 11 is closed, so that the lifting frame 10 stops moving. At this time, the dial indicator 26 stops moving because of the meshing between the short rack 3, the linkage gear 12 and the long rack 7. Then the disc 14 is rotated, and the disc 14 drives the clamped brake disc to rotate, so that the dial indicator 26 can detect the flatness of the machined surface of the brake disc. This solves the problem that the height of the fixed frame cannot be adjusted during the measurement process, and the brake disc can only be raised by the staff before the measurement can be performed.

[0028] In particular, the locking assembly includes a locking screw 23, a slot 24 communicating with the slide groove 25 is provided on the top of the mounting bracket 22, and a threaded hole is provided on the top of the slider 27. The locking screw 23 passes through the slot 24 and is threadedly connected to the threaded hole. The test stylus of the dial indicator 26 is coaxial with the center of the disc 14. At this time, the slider 27 can move in the slide groove 25. The slider 27 will drive the dial indicator 26 to move horizontally. Then, the horizontal position of the dial indicator 26 is changed by the locking screw 23. Since the brake disc is rotated for testing, the horizontal position of the dial indicator 26 on the diameter of the brake disc is changed, so that the dial indicator 26 can perform a comprehensive test on the brake disc.

[0029] Working principle: When needed, the brake disc is placed on the disc 14, and then the double-acting screw 18 is rotated. The double-acting screw 18, through its threaded engagement with the two sliders, causes the two arc-shaped clamps 21 to move towards each other along the cross-shaped groove 15. Simultaneously, the double-acting screw 18 drives the second bevel gear 20 to rotate. The second bevel gear 20, through its engagement with the two first bevel gears 16, drives the two threaded rods 17 to rotate in opposite directions. Since the threads of the two threaded rods 17 have the same direction, and the thread pitch between the double-acting screw 18 and the two threaded rods 17 is the same, the two threaded rods 17, through their threaded engagement with the other two sliders... When the gears mesh, the other two arc-shaped clamping plates 21 move in opposite directions, causing multiple arc-shaped clamping plates 21 to move synchronously and clamp and fix the brake disc in four directions. This ensures that the center of the brake disc is coaxial with the center of the disc 14, and provides a more stable fixation of the brake disc, improving the accuracy of the test. Then, the locking nut 19 is tightened to fix the bidirectional screw 18, thus preventing the arc-shaped clamping plates 21 from moving. Then, the self-locking hydraulic cylinder 11 is activated to move upward. The self-locking hydraulic cylinder 11 pushes the lifting frame 10 upward, which in turn drives the brake disc upward and the two short racks 3 upward. The short rack 3, through meshing with the two linkage gears 12, drives the two linkage gears 12 to rotate. The linkage gears 12 then drive the two long racks 7 to move downwards, which in turn drives the mounting bracket 22 to move downwards, thus causing the dial indicator 26 to move downwards. When the test needle of the dial indicator 26 contacts the machined surface of the brake disc, the self-locking hydraulic cylinder 11 is closed, thus stopping the lifting bracket 10 from moving. At this point, the dial indicator 26 remains stationary due to the meshing between the short rack 3, linkage gears 12, and long racks 7. Subsequently, the disc 14 is rotated, causing the clamped brake disc to rotate, thereby allowing the dial indicator 26 to move along the machined surface of the brake disc. The measurement is performed by adjusting the height of the fixed frame, which solves the problem that the brake disc could not be adjusted during the measurement process and had to be raised by the staff before measurement. Furthermore, the test stylus of the dial indicator 26 is coaxial with the center of the disc 14, which allows the slider 27 to move within the groove 25. The slider 27 will drive the dial indicator 26 to move horizontally. Then, the horizontal position of the dial indicator 26 is adjusted by the locking screw 23, thereby changing the horizontal position of the dial indicator 26. Since the brake disc is rotated for testing, the horizontal position of the dial indicator 26 on the diameter of the brake disc is changed, so that the dial indicator 26 can perform a comprehensive test on the brake disc.

[0030] Furthermore, although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle brake testing device, comprising a base plate (1), characterized in that, Two short sleeves (2) and two long sleeves (5) are fixedly connected to the upper surface of the base plate (1). Short racks (3) are slidably connected inside each of the two short sleeves (2). A lifting frame (10) is fixedly connected to the top of each short rack (3). A clamping mechanism (4) for placing the brake disc is provided on the upper surface of the lifting frame (10). Long racks (7) are slidably connected inside each of the two long sleeves (5). A measuring device for measuring the flatness of the brake disc surface is provided at the top of each long rack (7). The measuring mechanism (6) has two linkage gears (12) between the opposing short sleeve (2) and long sleeve (5) through the installation assembly. Both the short sleeve (2) and long sleeve (5) have a clearance groove on one side. The linkage gear (12) passes through the clearance groove and meshes with the short rack (3) and long rack (7). The upper surface of the base plate (1) is fixedly connected to a self-locking hydraulic cylinder (11), and one end of the piston rod of the self-locking hydraulic cylinder (11) is fixed to the lifting frame (10).

2. The automotive brake testing device according to claim 1, characterized in that, The clamping mechanism (4) includes a disc (14), which is rotatably connected to the upper surface of the lifting frame (10) at the center position via a bearing. A cross-shaped groove (15) is provided on the upper surface of the disc (14). A bidirectional lead screw (18) is rotatably connected to the cross-shaped groove (15) via a bearing. Two threaded rods (17) are rotatably connected to the cross-shaped groove (15) via a bearing. One end of each of the two threaded rods (17) is keyed to a bevel gear (16). A bevel gear (20) is keyed to the outer side of the bidirectional lead screw (18), and the bevel gear (20) meshes with the two bevel gears (16). Multiple sliders are slidably connected in the cross-shaped groove (15). An arc-shaped clamping plate (21) is welded to the top of each slider. The bidirectional lead screw (18) passes through two of the sliders and is threaded to them. The two threaded rods (17) pass through the other two sliders and are threaded to them.

3. The automotive brake testing device according to claim 2, characterized in that, One end of the bidirectional lead screw (18) passes through the disc (14) and is fixedly connected to a knob. A locking nut (19) is threaded onto the outer side of the bidirectional lead screw (18).

4. The automobile brake testing device according to claim 3, characterized in that, The tops of the first bevel gear (16) and the second bevel gear (20) do not exceed the top of the cross groove (15), and the thread directions of the two threaded rods (17) are the same.

5. The automobile brake testing device according to claim 1, characterized in that, The testing mechanism (6) includes a mounting frame (22), which is fixedly connected to the top of a long rack (7). A sliding groove (25) is provided on one side of the mounting frame (22), and a slider (27) is slidably connected in the sliding groove (25). A dial indicator (26) is fixedly connected to one side of the slider (27). The mounting frame (22) is provided with a locking component for fixing the dial indicator (26).

6. The automobile brake testing device according to claim 5, characterized in that, The locking assembly includes a locking screw (23), the top of the mounting bracket (22) is provided with a slot (24) that communicates with the slide groove (25), the top of the slider (27) is provided with a threaded hole, and the locking screw (23) passes through the slot (24) and is threadedly connected to the threaded hole.

7. The automobile brake testing device according to claim 1, characterized in that, The mounting assembly includes two mounting plates (9), both of which are fixedly connected to the upper surface of the base plate (1). A connecting shaft (13) is rotatably connected between the two mounting plates (9) via bearings, and two linkage gears (12) are keyed to the outside of the connecting shaft (13).

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