Device for testing static braking torque of brake

Abstract

The utility model belongs to the technical field, and discloses a device for testing the static braking torque of a brake, which comprises a frame. A power supply device; the brake and the output shaft are coaxially connected with a main shaft, one end of the main shaft is provided with a photoelectric rotary encoder used for recording the rotation angle of the brake, the other end of the main shaft is connected with a torque rotating speed sensor, and the torque rotating speed sensor collects torque data of the main shaft and is connected with the output end of the brake. A torque evaluation unit is installed below the torque rotating speed sensor to detect the torque of the main shaft; the swing arm sleeves the periphery of the main shaft and vertically extends downwards; the linear driving part moves in the horizontal direction, and a tension sensor is installed at the free end of the linear driving part and connected with the swing arm; the tension sensor measures the tension applied by the linear driving part. A tension tester is added, a torque and rotating speed sensor is added at a brake end, and through comparison of data at the two ends, force and torque change conditions in a test process are comprehensively considered, and experiment accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake testing equipment, in particular to a device for testing the static braking torque of a brake. Background Art

[0002] During static braking torque testing, the accuracy of the lever arm length must be controlled, and therefore accurate measurement is essential. During typical testing, the lever arm length is typically kept constant to avoid errors in the calculation results due to changes in the lever arm. Currently, common methods for applying external force include palletizing, hydraulics, and electric cylinders. Current methods of applying external force have the following issues:

[0003] 1. The hydraulic method has poor accuracy and is prone to large test errors in industries such as electronic equipment manufacturing and precision instrument testing.

[0004] 2. In the electric cylinder method experiment, different electric cylinder models correspond to different electric cylinder travel distances. The electric cylinder travel distance is too short to meet the movement requirements of the equipment. The electric cylinder model needs to be changed, which increases the complexity and cost of the test.

[0005] 3. The test process lacks data comparison at both ends, making it impossible to verify whether the test results are accurate. Utility Model Content

[0006] The utility model provides a device for testing the static braking torque of a brake.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a device for testing the static braking torque of a brake, which comprises:

[0008] A rack having a multi-layer structure;

[0009] Power supply equipment, arranged on the bottom platform of the rack;

[0010] A brake is connected to the frame; the brake output shaft is coaxially connected to the main shaft, one end of the main shaft is equipped with a photoelectric rotary encoder for recording the rotation angle of the brake, the other end of the main shaft is connected to a torque and speed sensor for collecting torque data of the main shaft, the torque and speed sensor is connected to the brake output end, and a torque evaluation unit is installed below the torque and speed sensor to detect the torque of the main shaft;

[0011] A swing arm, mounted on the outer periphery of the main shaft and extending vertically downward;

[0012] A linear drive component is fixedly mounted on the frame and moves in a horizontal direction; a tension sensor is mounted on the free end of the linear drive component, and the tension sensor is connected to an end corresponding to the position of the swing arm; the tension sensor measures the tension applied by the linear drive component.

[0013] According to the present invention, further, an extension rod is included, one end of the extension rod is connected to the tension sensor, and the other end is connected to an end corresponding to the position of the swing arm.

[0014] According to the present invention, further, the frame includes a main frame and a sub-frame fixedly arranged on one side of the main frame, with an internal space connected to the main frame and sharing a bottom platform; the main frame is a double-layer structure, with a platform B fixedly connected to the top thereof, the height of the sub-frame is less than the height of the main frame, and a platform A is provided on the top thereof.

[0015] According to the present invention, further, a support plate is included, and the brake is connected to the support plate.

[0016] According to the present invention, further, the support plate is L-shaped, and its horizontal plate part is connected to the top surface of platform A. Guide plates are provided on two opposite sides of the horizontal plate part to guide the support plate to move linearly in the direction of approaching or moving away from the main frame, thereby adjusting the distance between the support plate and the main frame.

[0017] According to the present invention, further, the main shaft is installed on the platform B through a fixing component.

[0018] According to the utility model, further, the platform B is installed with an outer cover around it, and a cover plate is installed on the top of the outer cover to form a closed cavity with an accommodating space. The main shaft is installed in the cavity. The cavity also includes a bracket installed on the platform B and two bearing frames arranged parallel to the bracket. The bearing frame is equipped with a bearing seat, and the main shaft passes through the bearing seat.

[0019] According to the present invention, further, the linear drive component is an electric cylinder, and the electric cylinder is fixedly connected to the bracket through a push rod base.

[0020] According to the present utility model, further, the power supply equipment is an electric box, and the electric box has an electric box door.

[0021] According to the present invention, further, four Forma wheels are provided at the bottom of the frame.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The utility model effectively solves the problems existing in the existing brake static braking torque test, such as inaccurate force application, poor adaptability of the electric cylinder stroke, and insufficient experimental accuracy due to lack of data comparison. It provides a strong guarantee for the accurate testing of the brake static braking torque, helps to improve the performance testing level of the brake, and provides accurate data support for product quality control and R&D decisions in related industries.

[0024] 2. The utility model adds a tension tester to the electric cylinder end and a torque and speed sensor to the brake end. By comparing the data at both ends, the force and torque changes during the test are comprehensively considered to improve the accuracy of the experiment.

[0025] 3. The utility model is equipped with an extension rod to adapt to electric cylinders with different strokes.

[0026] 4. The utility model adopts an electric cylinder as the external force application method to achieve precise force application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a device for testing the static braking torque of a brake from a first perspective according to the present invention;

[0028] Figure 2 This is a schematic structural diagram of a device for testing the static braking torque of a brake from a second perspective according to the present invention;

[0029] Figure 3 This is a schematic structural diagram of a device for testing the static braking torque of a brake from a third perspective according to the present invention;

[0030] Figure 4 This is a schematic structural diagram of a device for testing the static braking torque of a brake from a fourth perspective according to the present invention.

[0031] Figure markings: 1-cover, 2-outer cover, 3-support plate, 4-brake, 5-torque evaluation unit, 6-torque speed sensor, 7-coupling, 8-bearing seat, 9-support seat, 10-photoelectric rotary encoder, 11-control button, 12-display screen, 13-push rod base, 14-swing arm, 15-extension rod, 16-electrical box, 17-electrical box door, 18-Foma wheel, 19-tension sensor, 20-electric cylinder, 21-guide plate, 22-bracket, 23-frame, 24-transition connection plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only some embodiments of the utility model, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] like Figure 1-4 As shown, an embodiment of the present application provides a device for testing the static braking torque of a brake, comprising a frame 23. Frame 23 comprises a main frame and a sub-frame fixedly mounted on one side of the main frame, with its internal space interpenetrating therewith and sharing a common bottom platform. The main frame is a double-layer structure, with platform B fixedly connected to its top. The sub-frame is shorter than the main frame and has platform A mounted on its top. To facilitate movement of the device, four Forma wheels 18 are provided at the bottom of frame 23.

[0034] An electrical box 16 for providing power is installed on the bottom platform of the rack 23, and the electrical box 16 has an electrical box door.

[0035] An L-shaped support plate 3 is installed on the top surface of platform A, and the horizontal plate part is connected to the top surface of platform A. Guide plates 21 are provided on two opposite sides of the horizontal plate part of the support plate 3 to guide the support plate 3 to move linearly in the direction of approaching or moving away from the main frame, and adjust the distance between the support plate 3 and the main frame; the brake 4 is fixedly connected to the vertical plate part of the support plate 3 through a transition connecting plate 24; an outer cover 2 is installed around platform B, and a cover plate 1 is installed on the top of the outer cover 2 to form a closed cavity with an accommodating space, which includes a bracket 22 installed on platform B and two bearing frames 8 arranged parallel to the bracket 22. The bearing frame 8 is equipped with a bearing seat 9. The main shaft passes through the bearing seat 9, one end is coaxially connected to the output end of the brake 4, and the other end is connected to the bracket 22 and installed with a photoelectric rotary encoder 10; specifically, one end of the main shaft is connected to the torque and speed sensor 6 through a coupling 7, and the torque and speed sensor 6 is connected to the output end of the brake through the coupling 7. A torque evaluation unit 5 is installed below the torque and speed sensor 6 to detect the torque of the main shaft. The static braking torque can be calculated using the torque data collected by the torque and speed sensor 6. If the torque is known to be T (unit: N·m) and the lever length is L (unit: m), then the static braking torque M = T×L. The photoelectric rotary encoder 10 records the rotation angle θ (unit: radians) and the speed ω (unit: radians / second) of the brake. If the angle of rotation within the time t (unit: second) is known to be θ, then the average speed is The calculation method is prior art.

[0036] A swing arm 14 is mounted on the outer periphery of the main shaft. The swing arm 14 is located in the middle of the main shaft and extends vertically downward through the platform B to the second space of the main frame. An electric cylinder 20 is provided in the second space of the main frame. The electric cylinder 20 is fixedly mounted on the main frame of the frame 23 through the push rod base 13. A tension sensor 19 is installed at the front end of the electric cylinder 20. The tension sensor 19 is connected to the extension rod 15 through a connecting shaft. The other end of the extension rod 15 is connected to the swing arm 14 extending into the second space. The tension F (unit: Newton) applied by the electric cylinder 20 is measured by the tension sensor 19. The distance from the connection point of the extension rod 15 and the swing arm 14 to the center of rotation of the brake is d (unit: meter). At this time, the torque M generated by the tension 拉 =F×d. The calculation method is the existing technology.

[0037] Working process: In the preparation for the test, the equipment integrity check must be carried out first to carefully confirm whether all the components of the equipment are complete and without damage or missing. At the same time, the focus is on checking the firmness of the connection between the components, including but not limited to the connection between the brake 4 and the transition connection plate 24, the support plate 3, and the installation of the electric cylinder 20 and the push rod base 13, the tension sensor 19, the extension rod 15 and the swing arm 14.

[0038] If the stroke of the electric cylinder 20 is short, the extension rod 15 is not required. If the stroke of the electric cylinder 20 is long, install the extension rod 15 first, then horizontally mount the electric cylinder 20 on the rack to ensure that the equipment does not cause errors during subsequent testing. Then, open the electrical box door 17 and connect the equipment to a suitable power source, ensuring stable power supply and good grounding.

[0039] After the inspection is complete, the test unit is installed. This primarily involves mounting the brake under test on support plate 3. Using transition plate 24, the brake under test 4 is securely mounted in the center of support plate 3. Pre-test setup is then performed to confirm that the torque and speed sensor 6, torque evaluation unit 5, photoelectric rotary encoder 10, and tension sensor 19 are functioning properly and displaying no faults. The wiring for each sensor is also checked for proper connection. The required test parameters, such as the torque range, speed, and loading speed, are set using control buttons 11 and display 12. After precise settings are made according to the specific test requirements, the test can begin.

[0040] After starting the equipment, the electric cylinder 20, secured to the frame 23 via the push rod base 13, begins operating, applying force to the swing arm 14 via the tension sensor 19 and extension rod 15. During the test, the torque and speed sensor 6 collects real-time brake torque and speed data and transmits it to the torque evaluation unit 5 for analysis and processing. The photoelectric rotary encoder 10 records information such as the brake's rotation angle and speed. The tension sensor 19 measures the tension applied by the electric cylinder 20 for subsequent data comparison. The tester is required to closely monitor the various data displayed on the display 12 and observe the equipment's operating status, such as any abnormal noise, vibration, or overheating, so that any problems can be identified and addressed promptly.

[0041] After the test is completed, press the stop button, the equipment stops running, the electric cylinder 20 stops applying force, and the brake 4 also stops working. Next, read and record the test result data displayed on the display screen 12, including information such as the static braking torque, rotation speed, and rotation angle of the brake. At the same time, use the data from the tension sensor 19 for comparative analysis to further confirm the accuracy of the test results. Then, further analyze and process the collected data to generate a test report. Finally, remove the brake 4 under test, clean the support plate 3 and the transition connection plate 24, and check whether the various components of the equipment are worn or damaged. If necessary, repair or replace them in time. Close the electrical box door 17, and tidy up the working environment around the equipment to prepare for the next use.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for testing the static braking torque of a brake, characterized in that: include, A rack having a multi-layer structure; Power supply equipment, arranged on the bottom platform of the rack; A brake is connected to the frame; the brake output shaft is coaxially connected to the main shaft, one end of the main shaft is equipped with a photoelectric rotary encoder for recording the rotation angle of the brake, the other end of the main shaft is connected to a torque and speed sensor for collecting torque data of the main shaft, the torque and speed sensor is connected to the brake output end, and a torque evaluation unit is installed below the torque and speed sensor to detect the torque of the main shaft; A swing arm, mounted on the outer periphery of the main shaft and extending vertically downward; A linear drive component is fixedly mounted on the frame and moves in a horizontal direction; a tension sensor is mounted on the free end of the linear drive component, and the tension sensor is connected to an end corresponding to the position of the swing arm; the tension sensor measures the tension applied by the linear drive component.

2. A device for testing the static braking torque of a brake according to claim 1, characterized in that: It also includes an extension rod, one end of which is connected to the tension sensor, and the other end of which is connected to an end corresponding to the position of the swing arm.

3. A device for testing the static braking torque of a brake according to claim 1, characterized in that: The frame includes a main frame and a sub-frame fixedly arranged on one side of the main frame, with an internal space connected to the main frame and sharing a bottom platform; the main frame is a double-layer structure, with a platform B fixedly connected to the top of the main frame, the height of the sub-frame is less than the height of the main frame, and a platform A is provided on the top of the sub-frame.

4. A device for testing the static braking torque of a brake according to claim 3, characterized in that: A support plate is also included, and the brake is connected to the support plate.

5. A device for testing the static braking torque of a brake according to claim 4, characterized in that: The support plate is L-shaped, and its horizontal plate part is connected to the top surface of platform A. Guide plates are provided on two opposite sides of the horizontal plate part to guide the support plate to move linearly toward or away from the main frame and adjust the distance between the support plate and the main frame.

6. A device for testing the static braking torque of a brake according to claim 5, characterized in that: The main shaft is mounted on platform B via a fixing component.

7. A device for testing the static braking torque of a brake according to claim 6, characterized in that: The platform B is surrounded by an outer cover, and a cover plate is installed on the top of the outer cover to form a closed cavity with an accommodating space. The main shaft is installed in the cavity. The cavity also includes a bracket installed on the platform B and two bearing frames arranged in parallel with the bracket. The bearing frame is equipped with a bearing seat, and the main shaft passes through the bearing seat.

8. A device for testing the static braking torque of a brake according to claim 7, characterized in that: The linear drive component is an electric cylinder, which is fixedly connected to the bracket via a push rod base.

9. The device for testing the static braking torque of a brake according to claim 1, characterized in that: The power supply equipment is an electric box, which has an electric box door.

10. The device for testing the static braking torque of a brake according to claim 1, characterized in that: Four Forma wheels are arranged at the bottom of the frame.

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