Automobile disc brake stability testing device

Abstract

The invention relates to the technical field of brake testing, and discloses an automobile disc brake stability testing device, which comprises a base and a driver, and is characterized in that the base passes through two groups of transmission joints and is provided with corresponding detection sensors; and two groups of laser temperature detectors are arranged to detect the temperature of the surfaces of the two sides of the brake disc along with the reciprocating motion of the movable bracket, so that the test result is completely reflected in the dynamic and static balance stability test process of the brake. According to the invention, the two groups of rotating joints and the brake disc are installed in a butt joint manner, and the two groups of sensors are used for monitoring the deviation condition of the rotating shafts of the rotating joints in real time to obtain the deviation data of the brake disc in the rotating process, so that the data quantification is carried out on the stability test of the disc brake; and meanwhile, a comprehensive detection structure aiming at the temperature of the disc surface of the brake disc is arranged in a linkage manner, so that the stability test result of the disc brake is comprehensively reflected through different data angles.

Description

Technical Field

[0001] The invention relates to the technical field of brake testing, and in particular to a vehicle disc brake stability testing device. Background Art

[0002] Automobile brakes include drum brakes and disc brakes. Compared with drum brakes, disc brakes have no friction assist effect, and the braking torque is less affected by the friction coefficient, that is, it has good thermal stability, so it is widely used. However, disc brakes need to be equipped with a parking brake transmission device, and their structure is more complicated than drum brakes. Therefore, they are more prone to deviation, side slip and brake failure during use, thus affecting the safety of automobile driving. The stability of automobile disc brakes is closely related to the dynamic balance and static balance of the brake disc.

[0003] The prior art discloses a vehicle disc brake stability test device, application number CN201620990779.0, including a lifting device that drives a roller to rotate through a driving motor and then drives the wheel to rotate. The wheel begins to decelerate under the friction torque of the wheel brake, and at the same time, the roller applies a braking force in the tangential direction of the periphery of the wheel tire to overcome the friction torque of the brake, a testing device, an indication control device and a test vehicle. The vehicle to be tested is lifted by the lifting device, and the tire of the vehicle to be tested is placed on the upper surface of the roller to maintain the wheel to continue rotating. At the same time, the wheel tire adds a reaction force in the tangential direction of the roller surface that is opposite to the direction of the braking force, and the reaction force is transmitted to the indication control device through a force sensor. However, the application still has the following problems:

[0004] The structure of a disc brake includes a brake caliper and a brake disc. During the stability test of an automobile disc brake, the key process is the matching relationship between the brake caliper and the brake disc of the disc brake, but the application does not provide a specific test method for the brake disc structure; the feedback of the dynamic and static balance of the brake disc during the stability test requires specific data feedback, and the brake disc will produce vibrations in different directions during actual operation, but the prior art does not provide an effective quantification method. Therefore, we need to propose a vehicle disc brake stability test device. Summary of the invention

[0005] The purpose of the present invention is to provide a technical solution to solve the problems in the prior art mentioned in the above background technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A vehicle disc brake stability testing device, comprising:

[0008] A base and a driver, wherein a movable and adjustable moving block is arranged on the base, a sliding block is installed on the moving block through a buffer structure, a first rotating joint is installed on the sliding block, a second rotating joint is rotatably installed on the first rotating joint, a docking piece is rotatably installed on the second rotating joint, the second rotating joint is connected to a brake disc of a disc brake to be tested through the docking piece, an output shaft of the driver is connected to a driving shaft, the driving shaft is transmission-connected to the brake disc, the driving shaft and the docking piece are respectively located on both sides of the brake disc, a first detection sensor is installed on the rotating shaft of the first rotating joint, a second detection sensor is installed on the rotating shaft of the second rotating joint, and the two groups of detection sensors include angle offset detection function, torque detection function and load detection function for the rotating shaft of the rotating joint;

[0009] The base is provided with a connecting seat for installing the brake caliper of the disc brake to be tested, the connecting seat is provided with a reciprocating movable bracket, and two groups of laser temperature meters are installed on the movable bracket. The two groups of laser temperature meters follow the reciprocating movement of the movable bracket to detect the temperature of the surfaces on both sides of the brake disc.

[0010] Preferably, a movable seat capable of self-locking in position is slidably mounted on the base, a movable block capable of self-locking in position is slidably mounted on the movable seat, and a second telescopic rod for driving the movable block to be slidably mounted is mounted on the movable seat.

[0011] Preferably, the initial position of the rotating shaft of the first rotating joint is vertically set, the initial position of the rotating shaft of the second rotating joint is horizontally set, and the rotating shaft of the second rotating joint is vertically set to the rotating shaft of the first rotating joint, the first detection sensor and the second detection sensor are installed on the outside of the rotating joint, and the rotating shaft of the rotating joint extends to the outside of the rotating joint to dock with the detection shaft of the detection sensor.

[0012] Preferably, the buffer structure includes a buffer spring and a positioning rod, the positioning rod is installed on the moving block, the positioning rod is sleeved with a buffer spring, the buffer spring support is arranged between the moving block and the sliding block, and the first rotating joint is installed on the sliding block.

[0013] Preferably, a mounting seat is connected to the base, a first telescopic rod is mounted on the mounting seat so as to be horizontally movable and adjustable, and the connecting seat is mounted on the piston rod of the first telescopic rod; through the horizontal adjustment of the mounting seat and the vertical adjustment of the first telescopic rod, the position of the connecting seat can be adjusted to adapt to the installation position of the disc brake being tested.

[0014] Preferably, the reciprocating movable bracket on the connecting seat is driven by a driver, the detection positions of the two groups of laser temperature sensors are located in the radial position of the brake disc, and the reciprocating positions of the two groups of laser temperature sensors are also along the radial direction of the brake disc.

[0015] Preferably, an appearance detector is further installed on the movable bracket. The appearance detector and the laser temperature detector move reciprocally in the radial direction on both sides of the brake disc, so as to detect the temperature and appearance conditions on both sides of the brake disc simultaneously.

[0016] Preferably, a first bracket is installed on the connecting seat. An activity bracket is movably inserted through an activity hole on the first bracket. Two laser temperature detectors are installed on the activity bracket. The activity bracket is arranged in a U-shape so that the two laser temperature detectors respectively detect the temperatures of the two sides of the brake disc. The two laser temperature detectors are kept at a certain distance from the disc surface of the brake disc.

[0017] Preferably, a first transmission wheel is installed on the driving shaft. A second bracket is installed on the connecting seat. A second transmission wheel which is in transmission connection with the first transmission wheel is rotatably installed on the second bracket. The second transmission wheel is connected with a reciprocating lead screw. A threaded sleeve is installed on the reciprocating lead screw in a threaded manner. A bearing is arranged outside the threaded sleeve and is connected with a connecting rod through the bearing. The connecting rod is connected to the activity bracket.

[0018] Preferably, the signal interfaces of the first detection sensor and the second detection sensor are connected to a controller. The signal interfaces of the two laser temperature detectors are connected to the controller. The controller detects and records the signal data of the two detection sensors and the two laser temperature detectors in real time.

[0019] Technical effects and advantages of the present invention: A stability testing device for an automotive disc brake proposed by the present invention has the following advantages compared with the prior art:

[0020] In the present invention, two rotating joints are used for docking and installing with the brake disc. At the same time, the shaft offset conditions of the rotating joints are monitored in real time through two sensors to obtain the offset data of the brake disc during rotation, so as to quantify the data for the stability test of the disc brake. At the same time, since the slight offset generated by the brake disc during the stability test will also affect the braking effect of the brake caliper and intuitively affect the temperature of the brake disc, a comprehensive detection structure for the temperature of the brake disc surface is set up in a linkage manner, so as to comprehensively reflect the stability test results of the disc brake from different data angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the stability testing device of the present invention;

[0022] Figure 2 is for the present invention Figure 1 an enlarged structural schematic diagram of part A in;

[0023] Figure 3 is a front structural schematic diagram of the stability testing device of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of some structures;

[0025] Figure 5 It is a schematic diagram of the top view of the stability testing device of the present invention;

[0026] Figure 6 It is a schematic diagram of structures such as two sets of rotating joints and two sets of detection sensors in the present invention;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0028] In the figure:

[0029] 11. Base; 12. Moving seat; 13. Moving block; 14. Driver; 15. Buffer spring; 16. Positioning rod; 17. First rotating joint; 18. Second rotating joint; 19. Sliding block; 110. First detection sensor; 111. Second detection sensor; 112. Mounting seat; 113. Connecting seat; 114. Driving shaft; 115. First telescopic rod; 116. Second telescopic rod; 117. Docking piece;

[0030] 21. First transmission wheel; 22. Second transmission wheel; 23. Reciprocating screw rod; 24. Threaded sleeve; 25. First bracket; 26. Movable bracket; 27. Laser temperature meter; 28. Connecting rod; 29. ​​Second bracket; 210. Movable hole. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0032] The invention provides Figures 1 to 7 As shown, a vehicle disc brake stability testing device comprises:

[0033] A base 11 and a driver 14, wherein a movable and adjustable moving block 13 is provided on the base 11, and a sliding block 19 is installed on the moving block 13 through a buffer structure, and a first rotating joint 17 is installed on the sliding block 19, and a second rotating joint 18 is rotatably installed on the first rotating joint 17, and a docking piece 117 is rotatably installed on the second rotating joint 18, and the second rotating joint 18 is connected to the brake disc of the disc brake to be tested through the docking piece 117, and the output shaft of the driver 14 is connected to a driving shaft 114, and the driving shaft 114 is transmission-connected to the brake disc, and the driving shaft 114 and the docking piece 117 are respectively located on both sides of the brake disc, and a first detection sensor 110 is installed on the rotating shaft of the first rotating joint 17, and a second detection sensor 111 is installed on the rotating shaft of the second rotating joint 18, and the two groups of detection sensors include angle offset detection function, torque detection function and load detection function for the rotating shaft of the rotating joint;

[0034] The base 11 is provided with a connecting seat 113 for installing the brake caliper of the disc brake to be tested, and the connecting seat 113 is provided with a reciprocating movable bracket 26, and two groups of laser temperature meters 27 are installed on the movable bracket 26. The two groups of laser temperature meters 27 follow the reciprocating movement of the movable bracket 26 to detect the temperature of the surfaces on both sides of the brake disc.

[0035] Working principle: Through the design of the rotating joint and the docking piece 117, the matching relationship between the brake disc and the brake caliper can be accurately simulated to improve the accuracy of the test; comprehensive monitoring, two sets of detection sensors can comprehensively monitor the shaft offset, torque and load of the rotating joint, and provide detailed data for the stability of the brake; temperature monitoring, the laser temperature meter 27 can monitor the temperature change of the brake disc during the braking process, which is helpful to evaluate the thermal stability and heat dissipation performance of the brake disc; strong adaptability, the movable and adjustable moving block 13 and the buffer structure enable the test device to adapt to brake discs of different sizes and models, improving the versatility of the test device; improving test efficiency, through the automated drive shaft 114 transmission and the laser temperature meter 27, the test process is more efficient and reduces the need for manual operation; data support, the collected data can be used to analyze the performance of the brake, providing a basis for design improvement and quality control;

[0036] like Figures 1 to 3 As shown, a self-locking movable seat 12 is slidably mounted on the base 11, a self-locking movable block 13 is slidably mounted on the movable seat 12, and a second telescopic rod 116 is mounted on the movable seat 12 for driving the movable block 13 to slide. Under the adjustment mode setting of the two sets of sliding structures, the positions of the first rotating joint 17, the second rotating joint 18 and the docking member 117 can be adjusted more appropriately and precisely.

[0037] like Figure 5 and Figure 6 As shown, the initial position of the rotation axis of the first rotating joint 17 is vertically set, the initial position of the rotation axis of the second rotating joint 18 is horizontally set, and the rotation axis of the second rotating joint 18 is vertically set to the rotation axis of the first rotating joint 17, the first detection sensor 110 and the second detection sensor 111 are installed on the outside of the rotating joint, and the rotation axis of the rotating joint extends to the outside of the rotating joint to dock with the detection axis of the detection sensor.

[0038] like Figure 4 and Figure 5 As shown, the buffer structure includes a buffer spring 15 and a positioning rod 16, the positioning rod 16 is installed on the moving block 13, the buffer spring 15 is sleeved on the positioning rod 16, the buffer spring 15 is supported and arranged between the moving block 13 and the sliding block 19, and the first rotating joint 17 is installed on the sliding block 19.

[0039] like Figure 3 As shown, the base 11 is connected with a mounting seat 112, and a first telescopic rod 115 is mounted on the mounting seat 112 so as to be horizontally movable and adjustable, and the connecting seat 113 is mounted on the piston rod of the first telescopic rod 115. Through the horizontal adjustment of the mounting seat 112 and the vertical adjustment of the first telescopic rod 115, the position of the connecting seat 113 can be adjusted to adapt to the installation position of the disc brake to be tested. The driving shaft 114 is slidably mounted on the output shaft of the driver 14 to be adjusted according to the specific installation position of the disc brake to be tested, so as to adapt to the driving docking position of the brake disc.

[0040] like Figure 6 and Figure 7 As shown, the reciprocating movable bracket 26 on the connecting seat 113 is driven by the driver 14, and the detection positions of the two sets of laser temperature sensors 27 are located in the radial position of the brake disc, and the reciprocating positions of the two sets of laser temperature sensors 27 are also along the radial direction of the brake disc. Specifically, the movement mode of the two sets of laser temperature sensors 27 is to move along the radial direction of the brake disc, and since the brake disc itself rotates continuously during the detection process, the two sets of laser temperature sensors 27 can fully detect the temperature of the surface of the brake disc.

[0041] The movable bracket 26 is also provided with an appearance detector, and the appearance detector and the laser temperature meter 27 synchronously reciprocate in the radial direction of both sides of the brake disc, thereby simultaneously detecting the temperature and appearance of both sides of the brake disc.

[0042] A first bracket 25 is installed on the connecting seat 113. An activity bracket 26 is movably inserted into the first bracket 25 through an activity hole 210. Two laser temperature detectors 27 are installed on the activity bracket 26. The activity bracket 26 is arranged in a U shape so that the two laser temperature detectors 27 respectively detect the temperatures of both sides of the brake disc, and the two laser temperature detectors 27 keep a certain distance from the disc surface of the brake disc.

[0043] As Figure 6 and Figure 7 shown, a first transmission wheel 21 is installed on the drive shaft 114. A second bracket 29 is installed on the connecting seat 113. A second transmission wheel 22 which is in transmission connection with the first transmission wheel 21 is rotatably installed on the second bracket 29. The second transmission wheel 22 is connected with a reciprocating lead screw 23. A threaded sleeve 24 is installed on the reciprocating lead screw 23 in a threaded manner. A bearing is arranged outside the threaded sleeve 24 and the threaded sleeve 24 is connected with a connecting rod 28 through the bearing.

[0044] The signal interfaces of the first detection sensor 110 and the second detection sensor 111 are connected to the controller. The signal interfaces of the two laser temperature detectors 27 are connected to the controller. The controller detects and records the signal data of the two detection sensors and the two laser temperature detectors 27 in real time.

[0045] In summary, the present invention also has the following comprehensive effects: The rotating joint is docked with the brake disc. The first and second rotating joints 18 are docked with the brake disc of the tested disc brake to simulate the matching relationship between the brake disc and the brake caliper in actual work; Sensor monitoring: The first and second detection sensors 111 are installed on the rotating shafts of the first and second rotating joints 18. These sensors have functions of angle offset, torque and load detection and are used to monitor the offset condition of the rotating shafts of the rotating joints in real time; Driving and transmission: The driver 14 is in transmission connection with the brake disc through the drive shaft 114 to simulate the force transmission in the braking process. At the same time, the drive shaft 114 and the docking member 117 are located on both sides of the brake disc to ensure uniform distribution of the force; Detection by the laser temperature detector 27: The two laser temperature detectors 27 are installed on the activity bracket 26. As the activity bracket 26 reciprocates, the temperatures of both sides of the brake disc surface are detected to monitor the temperature change in the braking process; Appearance detection: The appearance detector works synchronously with the laser temperature detector 27 to detect the appearance conditions of both sides of the brake disc to find possible wear or damage; Data recording and analysis: The signal interfaces of all sensors are connected to the controller. The controller detects and records the detected signal data in real time to provide data support for the stability test.

[0046] Data quantification: Through the real-time monitoring of the displacement of the rotating joint shaft by sensors, the displacement data of the brake disc during the rotation process is obtained, and the data quantification of the stability test is realized; comprehensive detection: the linkage setting allows for comprehensive detection of the temperature of the brake disc surface, reflecting the stability of the disc brake from different angles; improving test accuracy: through precise sensors and laser temperature sensors27, the performance of the brake disc during the stability test can be more accurately evaluated, including slight displacement and temperature changes; predictive maintenance: through the monitoring of the vibration, displacement and temperature of the brake disc, potential problems can be predicted, predictive maintenance can be achieved, and unexpected failures can be reduced; optimized design: the collected data can be used to optimize the design of the disc brake and improve its stability and performance; improved safety: through comprehensive stability testing, the reliability of the brake under various working conditions can be ensured, thereby improving the safety of the vehicle.

[0047] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A vehicle disc brake stability testing device, characterized in that: include: A base (11) and a driver (14), wherein a movable and adjustable moving block (13) is arranged on the base (11), a sliding block (19) is installed on the moving block (13) via a buffer structure, a first rotating joint (17) is installed on the sliding block (19), a second rotating joint (18) is rotatably installed on the first rotating joint (17), a docking piece (117) is rotatably installed on the second rotating joint (18), the second rotating joint (18) is connected to a brake disc of a disc brake to be tested via the docking piece (117), an output shaft of the driver (14) is connected to a drive shaft (114), the drive shaft (114) is transmission-connected to the brake disc, the drive shaft (114) and the docking piece (117) are respectively located on two sides of the brake disc, a first detection sensor (110) is installed on the rotating shaft of the first rotating joint (17), and a second detection sensor (111) is installed on the rotating shaft of the second rotating joint (18), the two groups of detection sensors include an angle offset detection function, a torque detection function and a load detection function for the rotating shaft of the rotating joint; The base (11) is provided with a connecting seat (113) for installing a brake caliper of a disc brake to be tested, the connecting seat (113) is provided with a reciprocating movable bracket (26), and two groups of laser temperature measuring devices (27) are installed on the movable bracket (26), and the two groups of laser temperature measuring devices (27) detect the temperature of the surfaces of both sides of the brake disc following the reciprocating movement of the movable bracket (26).

2. A vehicle disc brake stability testing device according to claim 1, characterized in that: A movable seat (12) capable of self-locking in position is slidably mounted on the base (11), a movable block (13) capable of self-locking in position is slidably mounted on the movable seat (12), and a second telescopic rod (116) for driving the movable block (13) to be slidably mounted is mounted on the movable seat (12).

3. The vehicle disc brake stability testing device according to claim 1, characterized in that: The initial position of the rotating shaft of the first rotating joint (17) is vertical, the initial position of the rotating shaft of the second rotating joint (18) is horizontal, and the rotating shaft of the second rotating joint (18) is vertically arranged with respect to the rotating shaft of the first rotating joint (17), the first detection sensor (110) and the second detection sensor (111) are mounted outside the rotating joint, and the rotating shaft of the rotating joint extends to the outside of the rotating joint and docks with the detection shaft of the detection sensor.

4. The vehicle disc brake stability testing device according to claim 1, characterized in that: The buffer structure comprises a buffer spring (15) and a positioning rod (16); the positioning rod (16) is mounted on the moving block (13); the buffer spring (15) is sleeved on the positioning rod (16); the buffer spring (15) is supported and arranged between the moving block (13) and the sliding block (19); and the first rotating joint (17) is mounted on the sliding block (19).

5. The vehicle disc brake stability testing device according to claim 1, characterized in that: An installation base (112) is connected to the base (11). A first telescopic rod (115) is horizontally movably adjusted and installed on the installation base (112). The connecting seat (113) is installed on the piston rod of the first telescopic rod (115). By horizontally adjusting the installation base (112) and vertically adjusting the first telescopic rod (115), the position of the connecting seat (113) can be adjusted to adapt to the installation position of the tested disc brake.

6. A vehicle disc brake stability testing device according to claim 1 or 3, characterized in that: A movable bracket (26) that reciprocates on the connecting seat (113) is driven by a driver (14). The detection positions of two groups of laser thermometers (27) are located in the radial position of the brake disc, and the reciprocating movement positions of the two groups of laser thermometers (27) also follow the radial direction of the brake disc.

7. The vehicle disc brake stability testing device according to claim 1, characterized in that: An appearance detector is also installed on the movable bracket (26). The appearance detector and the laser thermometer (27) synchronously reciprocate in the radial direction on both sides of the brake disc, so as to detect the temperature and appearance conditions on both sides of the brake disc at the same time.

8. The vehicle disc brake stability testing device according to claim 6, characterized in that: A first bracket (25) is installed on the connecting seat (113). A movable bracket (26) is movably inserted through a movable hole (210) on the first bracket (25). Two groups of laser thermometers (27) are installed on the movable bracket (26). The movable bracket (26) is arranged in a U-shape so that the two groups of laser thermometers (27) respectively detect the temperatures of both sides of the brake disc. The two groups of laser thermometers (27) are kept at a certain distance from the disc surface of the brake disc.

9. The vehicle disc brake stability testing device according to claim 8, characterized in that: A first transmission wheel (21) is installed on the drive shaft (114). A second bracket (29) is installed on the connecting seat (113). A second transmission wheel (22) that is drivingly installed with the first transmission wheel (21) is rotatably installed on the second bracket (29). The second transmission wheel (22) is connected to a reciprocating lead screw (23). A threaded sleeve (24) is threadedly installed on the reciprocating lead screw (23). A bearing is arranged outside the threaded sleeve (24) and is connected to a connecting rod (28) through the bearing. The connecting rod (28) is connected to the movable bracket (26).

10. The vehicle disc brake stability testing device according to claim 9, characterized in that: The signal interfaces of the first detection sensor (110) and the second detection sensor (111) are connected to the controller. The signal interfaces of two groups of laser thermometers (27) are connected to the controller. The controller detects and records the signal data of the two groups of detection sensors and the two groups of laser thermometers (27) in real time.

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