Automobile brake caliper testing device

Abstract

The invention belongs to the technical field of automobile part testing, and particularly relates to an automobile brake caliper testing device comprising a driving unit which comprises a first driving part used for providing rotation driving force; the brake disc quick mounting mechanism comprises a linear driving mechanism I, the tail end of the linear driving mechanism I is connected with the shaft end of the driving part I, and the linear driving mechanism I is configured to be matched with the driving part I so as to quickly clamp a brake disc; and the caliper positioning tool is arranged adjacent to the brake disc quick mounting mechanism and comprises a caliper bracket for mounting a to-be-tested caliper. The first linear driving mechanism is axially connected to the shaft end of the first driving part, the limiting block arranged on the peripheral side of the movable end of the first linear driving mechanism is matched with the abutting part arranged at the fixed end of the first linear driving mechanism, the brake disc is rapidly installed and fixed through axial abutting and clamping of the abutting part, in the process, a fastener is not needed, and therefore the brake disc can be rapidly installed and fixed. Therefore, the disassembly and assembly efficiency is high, and the shaft end of the first driving part cannot be bent.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts testing technology, specifically relating to an automotive brake caliper testing device. Background Technology

[0002] Throughout the century-long history of the automotive industry, the braking system has always been the most critical element of vehicle active safety, hailed as the "lifeline." Within the entire braking system, the brake caliper (commonly known as the "brake cylinder") is the final core component performing the braking action. Its reliability, stability, and durability directly determine the vehicle's braking performance and the safety of its occupants. From gentle braking during daily commutes to extreme braking in emergency situations, the caliper must perform its mission accurately and reliably in extremely harsh working environments.

[0003] Currently, there are also specialized devices for testing calipers in existing technologies, such as the adjustable caliper drag test universal fixture (announcement number CN222299179U), which includes: a base; a brake disc mounting fixture; a drive motor with an output shaft; a torque sensor that is drively connected to the brake disc mounting fixture and the output shaft of the drive motor; and an adjustment mechanism including an adjustment seat, a mounting seat that slides on the adjustment seat in a direction close to or away from the brake disc mounting fixture, and adjustment components... This significantly improves the versatility and flexibility of the fixture, reduces the time and cost of changing fixtures, improves testing efficiency, and meets the diverse market demands of automotive braking systems.

[0004] For example, a modular integrated braking performance testing bench with announcement number CN109799100B includes a test bench base, on which a drive device, a rotating shaft, a flywheel assembly, and a detection device are installed... This invention is applicable to the study of scientific issues such as vibration noise, wear patterns, and frictional heat distribution at the contact interface of brake discs / pads during the braking process of vehicles.

[0005] In the aforementioned prior art, the installation of brake discs requires manual alignment of the brake disc with the mounting plate, followed by tightening the fasteners to secure the brake disc. This installation method is very inconvenient when installing or removing brake discs. On the one hand, it is inefficient and poses safety hazards. On the other hand, since installation and removal require the use of tools to tighten the fasteners, and when tightening, pressure perpendicular to the axis needs to be applied, over time, this will cause the drive shaft connected to the brake disc to flex, resulting in severe shaking and vibration when the brake disc rotates. At the same time, it will generate huge additional stress that will damage the entire testing equipment.

[0006] In view of this, the present invention provides an automotive brake caliper testing device to solve the above problems. Summary of the Invention

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automotive brake caliper testing device, comprising:

[0008] The drive unit includes a drive component for providing rotational driving force;

[0009] A brake disc quick-release mechanism includes a linear drive mechanism whose end is connected to the shaft end of the drive member, the linear drive mechanism being configured to cooperate with the drive member to quickly clamp the brake disc; and

[0010] A caliper positioning fixture is provided adjacent to the brake disc quick-mount mechanism, and includes a caliper bracket for mounting the caliper to be tested.

[0011] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the movable end of the linear drive mechanism is provided with a radially extending and oppositely arranged limiting block.

[0012] The brake disc has a mounting hole at its center that matches the movable end of the linear drive mechanism. The inner wall of the mounting hole also has a clearance hole that matches the limiting block. Furthermore, the end face of the opening of the mounting hole also has a fitting groove that matches the limiting block.

[0013] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the fixed end of the linear drive mechanism is further provided with an abutment portion, and the limiting block can be axially separated from or fitted with the abutment portion through the linear drive mechanism.

[0014] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the caliper bracket is further equipped with a temperature measuring device for measuring the temperature of the brake disc surface.

[0015] As a preferred embodiment of the automotive brake caliper testing device of the present invention, it further includes a protective mechanism disposed on the caliper bracket, the protective mechanism comprising two sets of protective covers that open and close relative to each other to surround the brake disc and the caliper to be tested.

[0016] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the protective mechanism further includes a second drive component mounted on the caliper bracket, and two sets of transmission teeth that mesh with each other and are respectively axially fixed to the output end of the second drive component and rotatably connected to the caliper bracket. The two sets of transmission teeth are also respectively connected to the two sets of protective covers.

[0017] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the drive unit further includes a drive component bracket for mounting a drive component, wherein the drive component bracket and the caliper bracket are both disposed opposite to each other on the top surface of the base.

[0018] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the drive component bracket and / or caliper bracket are slidably connected to the base, and the top surface of the base is further provided with an adjustment mechanism for driving the drive component bracket and / or caliper bracket to slide on the base.

[0019] As a preferred embodiment of the automotive brake caliper testing device of the present invention, the adjustment mechanism includes a second linear drive mechanism for providing driving force.

[0020] As a preferred embodiment of the automotive brake caliper testing device of the present invention, a torque detection unit is further provided between the first driving component and the first linear drive mechanism; the torque detection unit includes a torque sensor whose input shaft and output shaft are respectively connected to the shaft end of the first driving component and the end of the first linear drive mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The present invention connects a linear drive mechanism axially to the shaft end of a drive component, and through the cooperation of a limiting block provided on the periphery of the movable end of the linear drive mechanism and an abutment provided on the fixed end, it can quickly pass through the mounting hole and clearance hole of the brake disc and be embedded in the fitting groove. The brake disc is quickly installed and fixed by axially clamping against the abutment. Since fasteners are not required in this process, the disassembly and assembly efficiency is high and no deflection is caused to the shaft end of the drive component.

[0023] 2. This invention provides a protective mechanism on the caliper bracket that surrounds the caliper and brake disc, thereby effectively limiting brake disc splashing and improving the safety of testing operations in the event of brake disc breakage due to excessive thermal stress or mechanical overload. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the linear drive mechanism of the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the brake disc of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram of the protective mechanism installed in this invention.

[0029] Figure 5 This is a schematic diagram of the protective mechanism of the present invention when it is in operation.

[0030] Figure 6 This is a schematic diagram of the caliper positioning fixture structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of a specific component of the protective mechanism of the present invention.

[0032] In the diagram: 1. Base; 2. Drive unit; 21. Drive component bracket; 22. Drive component one; 3. Torque detection unit; 31. Sensor bracket; 32. Torque sensor; 4. Brake disc quick-release mechanism; 41. Linear drive mechanism one; 411. Limit block; 412. Abutment part; 42. Mounting hole; 421. Clearance hole; 422. Fitting groove; 5. Caliper positioning fixture; 51. Caliper bracket; 52. Caliper positioning hole; 53. Temperature measuring device mounting hole; 54. Temperature measuring device; 6. Protective mechanism; 61. Drive component two; 62. Transmission gear; 63. Protective cover; 631. Clearance opening; 7. Adjustment mechanism; 71. Linear drive mechanism two; 72. Slide groove; 73. Slider. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1:

[0035] This invention relates to an automotive brake caliper testing device, such as... Figures 1-3 As shown, it includes a base 1, a drive unit 2, a brake disc quick-release mechanism 4, and a caliper positioning fixture 5 mounted on the base 1.

[0036] The drive unit 2 includes a drive component bracket 21 and a drive component 22 mounted on the drive component bracket 21 for providing rotational driving force, such as a motor. In this embodiment, a servo motor is preferred. The caliper positioning fixture 5 includes a caliper bracket 51 disposed opposite to the drive component bracket 21 and a caliper positioning hole 52 opened on the top of the caliper bracket 51 for mounting the caliper to be tested. The brake disc quick-release mechanism 4 includes a linear drive mechanism 41 whose fixed end is connected to the shaft end of the drive component 22 via a coupling. In this embodiment, the linear drive mechanism 41 adopts a spline electric cylinder with torque resistance capability.

[0037] Specifically, a radially extending and oppositely arranged limiting block 411 is provided on the periphery of the movable end of the linear drive mechanism 41, such as... Figure 2As shown; a mounting hole 42 adapted to the movable end of the linear drive mechanism 41 is provided at the center of the brake disc; an clearance hole 421 adapted to the limiting block 411 is also provided on the inner wall of the mounting hole 42; and a fitting groove 422 adapted to the limiting block 411 is also provided on the open end face of the mounting hole 42. Figure 3 As shown, in this embodiment, the included angle between the fitting groove 422 and the clearance hole 421 is 90°.

[0038] In use, the mounting hole 42 and clearance hole 421 of the brake disc are manually aligned with the movable end and limiting block 411 of the linear drive mechanism 41. By controlling the movable end of the linear drive mechanism 41 to extend and pass through the mounting hole 42 of the brake disc, the drive component 22 is activated, causing the drive component 22 to drive the linear drive mechanism 41 to rotate 90°, aligning the limiting block 411 with the fitting groove 422. Finally, by controlling the movable end of the linear drive mechanism 41 to retract and the limiting block 411 to embed into the fitting groove 422, the continuous retraction of the movable end of the linear drive mechanism 41 can clamp the brake disc with its fixed end face, achieving quick installation and removal of the brake disc. In addition, since the installation and removal of the brake disc is always under axial force, there is no radial pressure, so there will be no deflection on the shaft end of the drive component 22.

[0039] Furthermore, such as Figure 2 As shown, in order to improve the clamping stability of the linear drive mechanism 41 on the brake disc, an abutment part 412 is also provided on the periphery of the fixed end of the linear drive mechanism 41. The surface of the abutment part 412 is coated with an anti-slip layer or has anti-slip texture, thereby increasing the friction and friction area between it and the brake disc, so as to improve the stability of the brake disc installation.

[0040] Furthermore, in order to facilitate the measurement of torque data provided by the drive component 22, a torque detection unit 3 is also provided between the drive component 22 and the linear drive mechanism 41.

[0041] The torque detection unit 3 includes a sensor bracket 31 and a torque sensor 32 mounted on the sensor bracket 31, with its input and output shafts connected to the shaft end of the drive component 22 and the fixed end of the linear drive mechanism 41 respectively via couplings. When the drive component 22 rotates, its torque can be easily detected by the torque sensor 32, providing more test data in the testing of brake calipers.

[0042] Preferably, a temperature measuring device mounting hole 53 is provided on the surface of the caliper bracket 51. At the same time, a temperature measuring device 54 is threadedly connected inside the temperature measuring device mounting hole 53. In this embodiment, the temperature measuring device 54 is preferably an infrared thermometer, and its measuring end is set relative to the brake disc to measure the temperature of the brake disc surface during braking, so as to provide temperature test data.

[0043] Example 2:

[0044] like Figures 4-5 As shown, this embodiment also provides an adjustment mechanism 7 based on the first embodiment above, which is used to adjust the distance between the drive unit 2 and the caliper positioning fixture 5, thereby providing a good working space for the disassembly and alignment of the various components of the testing device.

[0045] The positioning mechanism 7 includes a second linear drive mechanism 71 for providing driving force, a drive component bracket 21 and / or a caliper bracket 51 that are slidably connected to the base 1, the second linear drive mechanism 71 is disposed on the base 1, and its movable end is connected to the drive component bracket 21 and / or the caliper bracket 51.

[0046] Specifically, a slider 73 is provided at the bottom of the caliper bracket 51 and / or the drive component bracket 21. A groove 72 adapted to the slider 73 is formed on the base 1. The slider 73 slides within the groove 72, achieving a sliding connection between it and the base 1. In this embodiment, the second linear drive mechanism 71 is a hydraulic cylinder or an electric push rod, etc. By controlling the operation of the second linear drive mechanism 71, it pushes the caliper bracket 51 and / or the drive component bracket 21 to slide on the base 1, thereby adjusting the distance between them. In this embodiment, both the caliper bracket 51 and the drive component bracket 21 are slidably connected to the base 1, and two sets of the second linear drive mechanism 71 are provided, respectively connecting the caliper bracket 51 and the drive component bracket 21. Simultaneous adjustment improves the flexibility of adjustment.

[0047] Example 3:

[0048] Figures 4-7 The third embodiment of the present invention is shown, differing from the first or second embodiment in that a protective mechanism 6 is also provided to address the problem of brake disc breakage and splashing caused by excessive thermal stress or mechanical overload during testing. Taking mechanical overload as an example: if the applied braking force far exceeds the design limit of the brake disc, excessive mechanical stress may be generated on the brake disc, leading to its direct fracture. Alternatively, the brake disc itself may have casting defects such as porosity, inclusions, or microcracks. These defects become stress concentration points, accelerating fatigue under cyclic loading and ultimately leading to fracture.

[0049] Based on the above objectives, this embodiment provides a protective mechanism 6 on the caliper bracket 51. The protective mechanism 6 includes two sets of protective covers 63 that open and close relative to each other to surround the brake disc and the caliper to be tested. The two sets of protective covers 63 are also provided with clearance openings 631 to avoid the linear drive mechanism 41 on which the brake disc is mounted when closed.

[0050] Specifically, the protective mechanism 6 also includes a second drive component 61 mounted on the caliper bracket 51, preferably a servo motor, and two sets of transmission teeth 62 that mesh with each other and are axially fixed to the output end of the second drive component 61 and rotatably connected to the caliper bracket 51, respectively. The two sets of transmission teeth 62 are also connected to two sets of protective covers 63 respectively.

[0051] In use, when the control drive component 61 rotates, it drives a set of transmission teeth 62 to rotate. Since this set of transmission teeth 62 meshes with another set of transmission teeth 62, when one rotates, the other set of transmission teeth 62 meshing with it will inevitably rotate in the opposite or opposite direction, thereby driving the two sets of protective covers 63 connected to it to open and close, thus surrounding the installed caliper and brake disc under test. When the brake disc breaks, the enclosure of the protective cover 63 can effectively limit the splashing of the brake disc, providing a relatively safe testing environment.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for automotive brake calipers, characterized in that, include: The drive unit (2) includes a drive element (22) for providing rotational driving force. The brake disc quick-release mechanism (4) includes a linear drive mechanism (41) whose end is connected to the shaft end of the drive member (22), the linear drive mechanism (41) being configured to cooperate with the drive member (22) to quickly clamp the brake disc; and The caliper positioning fixture (5) is provided adjacent to the brake disc quick-mount mechanism (4), and includes a caliper bracket (51) for mounting the caliper to be tested.

2. The automotive brake caliper testing device according to claim 1, characterized in that: The linear drive mechanism (41) has a radially extending and oppositely arranged limiting block (411) on the periphery of its active end. The center of the brake disc is provided with a mounting hole (42) that is adapted to the movable end of the linear drive mechanism (41). The inner wall of the mounting hole (42) is also provided with a clearance hole (421) that is adapted to the limiting block (411). Furthermore, the end face of the opening end of the mounting hole (42) is also provided with a fitting groove (422) that is adapted to the limiting block (411).

3. The automotive brake caliper testing device according to claim 2, characterized in that: The fixed end of the linear drive mechanism (41) is also fitted with an abutment part (412), and the limiting block (411) can be axially separated from or fitted with the abutment part (412) through the linear drive mechanism (41).

4. The automotive brake caliper testing device according to claim 1, characterized in that: A temperature measuring device (54) is also installed on the caliper bracket (51) for measuring the temperature of the brake disc surface.

5. The automotive brake caliper testing device according to any one of claims 1-4, characterized in that: It also includes a protective mechanism (6) disposed on the caliper bracket (51), the protective mechanism (6) comprising two sets of protective covers (63) that open and close relative to each other to surround the brake disc and the caliper to be tested.

6. The automotive brake caliper testing device according to claim 5, characterized in that: The protective mechanism (6) also includes a second drive component (61) mounted on the caliper bracket (51), and two sets of transmission teeth (62) meshing with each other and respectively axially fixed to the output end of the second drive component (61) and rotatably connected to the caliper bracket (51). The two sets of transmission teeth (62) are also respectively connected to the two sets of protective covers (63).

7. The automotive brake caliper testing device according to claim 1, characterized in that: The drive unit (2) also includes a drive bracket (21) for mounting the drive component (22), and the drive bracket (21) and the caliper bracket (51) are both disposed opposite to each other on the top surface of the base (1).

8. The automotive brake caliper testing device according to claim 7, characterized in that: The drive bracket (21) and / or caliper bracket (51) are slidably connected to the base (1), and the top surface of the base (1) is also provided with an adjustment mechanism (7) for driving the drive bracket (21) and / or caliper bracket (51) to slide on the base (1).

9. The automotive brake caliper testing device according to claim 8, characterized in that: The adjustment mechanism (7) includes a second linear drive mechanism (71) for providing driving force.

10. The automotive brake caliper testing device according to claim 1, characterized in that: A torque detection unit (3) is also provided between the drive component (22) and the linear drive mechanism (41); the torque detection unit (3) includes a torque sensor (32) whose input shaft and output shaft are respectively connected to the shaft end of the drive component (22) and the end of the linear drive mechanism (41).

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