Torque testing equipment for flywheel type brake

Abstract

The invention discloses a flywheel type brake torque test device, which relates to the technical field of brake detection and comprises a driving motor, a flywheel, a speed reducer, a mounting flange and a detection assembly. The driving motor is used for providing a power source for torque testing; the flywheel is installed on an output shaft of the driving motor and used for increasing the output torque of the driving motor. An input shaft of the speed reducer is connected with an output shaft of the driving motor; an output shaft of the speed reducer is used for fixedly mounting a brake disc; the mounting flange is coaxially and rotationally connected with an output shaft of the speed reducer, and the mounting flange is used for mounting brake calipers; the detection assembly comprises a lever, a first sensor and a second sensor, one end of the lever is installed on one side of the installation flange, and the upper face and the lower face of the end, away from the installation flange, of the lever abut against the first sensor and the second sensor respectively so as to measure the torque of the brake calipers during braking when the brake calipers conduct braking. The manufacturing cost of the torque testing equipment is reduced, and the measuring range of the torque testing equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of brake detection, and in particular to a flywheel brake torque testing device. Background Art

[0002] At present, in the process of brake production and development, the detection of the braking force of the brake is extremely important. In the existing technology, most of the torque sensors are directly connected to the power source and the brake to detect the braking force.

[0003] In the related art, for example, a Chinese patent with announcement number CN220039708U discloses a device for measuring brake torque, including a workbench, the workbench has a platen, one end of the platen is a test station, the other end of the platen is a motor station, the middle of the platen is a sensor station, the brake to be tested is installed on the test station and the connecting shaft is arranged toward the sensor station; a torque sensor, the torque sensor is installed on the sensor station, and the torsion shafts at both ends of the torque sensor are respectively facing the test station and the motor station; a test motor, the test motor is installed on the motor station, and the driving shaft of the test motor is facing the sensor station; a coupling, a coupling is provided between the connecting shaft of the brake to be tested and the torsion shaft at one end of the torque sensor, and between the torsion shaft at the other end of the torque sensor and the driving shaft of the test motor.

[0004] However, in the above-mentioned related technologies, if you want to measure a larger torque of several thousand or tens of thousands of Newton meters, you need to use a large-range torque sensor and a large-torque motor. However, the prices of large-range torque sensors and large-torque motors are relatively high, which will lead to an increase in the cost of testing equipment and is not conducive to the long-term development of the enterprise. Summary of the invention

[0005] In order to reduce the manufacturing cost of the torque testing equipment and improve the measurement range of the torque testing equipment, the present application provides a flywheel brake torque testing equipment.

[0006] The present application provides a flywheel brake torque test device that adopts the following technical solution: A flywheel brake torque testing device, comprising: A driving motor is used to provide a power source for torque testing; A flywheel is mounted on the output shaft of the drive motor, and the flywheel can use the rotational inertia generated by its own rotation to increase the output torque of the drive motor; A reducer, wherein the input shaft of the reducer is connected to the output shaft of the driving motor, and the output shaft of the reducer is used to fix the brake disc of the brake; A mounting flange, the mounting flange is coaxially rotatably arranged with the output shaft of the reducer, and the mounting flange is used to mount a brake caliper of the brake; The detection component includes a lever, a first sensor and a second sensor. One end of the lever is installed on one side of the mounting flange, and the other end extends in a direction away from the mounting flange. The upper and lower surfaces of the end of the lever away from the mounting flange respectively abut against the measuring surface of the first sensor and the measuring surface of the second sensor. When the brake caliper drives the mounting flange to rotate, the first sensor or the second sensor can measure the torque of the brake caliper during braking.

[0007] By adopting the above technical solution, the flywheel brake torque test equipment can effectively utilize the rotational inertia of the flywheel to increase the output torque of the drive motor, and by using it in conjunction with a reducer, further amplify the output torque of the test equipment, making it suitable for a wider range of torque testing needs and reducing the demand for high-cost high-torque motors; in addition, the lever design in the detection component is clever, which converts the torque into a torque acting on the first sensor or the second sensor, thereby reducing the demand for a large-range torque sensor and further reducing the overall manufacturing cost of the equipment.

[0008] Optionally, it also includes a counterweight assembly, which includes a counterweight seat. The counterweight seat is installed on the side of the mounting flange away from the lever, and the counterweight seat is used to keep the weight on both sides of the mounting flange as balanced as possible.

[0009] By adopting the above technical solution, the setting of the counterweight assembly makes the weight on both sides of the mounting flange more balanced, thereby reducing the test error caused by the lever pressing the first sensor or the second sensor under its own weight, and improving the accuracy of the test results; at the same time, the balanced weight distribution helps to reduce vibration and noise during the operation of the equipment and extend the service life of the equipment.

[0010] Optionally, the lever includes a fixed part and a movable part; one end of the fixed part is installed on one side of the mounting flange, and the other end extends in a direction away from the mounting flange, the movable part is slidably arranged at the end of the fixed part away from the mounting flange, and the upper and lower surfaces of the end of the movable part away from the fixed part respectively slide against the measuring surface of the first sensor and the measuring surface of the second sensor; a first telescopic driving member is provided between the fixed part and the movable part, and the first telescopic driving member is used to make the movable part move away from or approach the mounting flange, and a plurality of groups of first sensors and second sensors are provided along the path where the movable part moves away from or approaches the mounting flange, and are respectively used to slide against the upper and lower surfaces of the end of the movable part away from the fixed part.

[0011] By adopting the above technical solution, the design of the fixed part and the movable part of the lever makes it possible to change the length of the lever arm by adjusting the length of the lever, thereby achieving accurate measurement of torques of different sizes; this design not only improves the applicability of the equipment, but also ensures that accurate measurement results can be obtained under different test conditions.

[0012] Optionally, the counterweight assembly also includes a first counterweight block and a second telescopic drive component, wherein the first counterweight block is slidably disposed on the counterweight seat, and the second telescopic drive component is disposed between the first counterweight block and the counterweight seat, and the second telescopic drive component is used to move the first counterweight block away from or close to the mounting flange.

[0013] By adopting the above technical solution, after the lever length is adjusted, the weight of the mounting flange on the side away from the lever can be dynamically adjusted to balance the weight on both sides of the mounting flange; specifically, when the change in lever length causes the weight on both sides of the mounting flange to be unbalanced, the second telescopic drive member can push or pull the first counterweight block as needed to move it away from or close to the mounting flange, thereby achieving weight balance on both sides of the mounting flange and ensuring the stability and accuracy of the test process.

[0014] Optionally, the first sensor and the second sensor are both electrically connected to the second telescopic drive component, and the second telescopic drive component can adjust the distance between the first counterweight block and the mounting flange according to the abutment force of the first sensor or the second sensor when the moving part is unloaded, so as to balance the weight on both sides of the mounting flange as much as possible.

[0015] By adopting the above technical solution, the contact force of the moving part on the first sensor or the second sensor when there is no load can be monitored in real time, so as to automatically adjust the distance between the first counterweight block and the mounting flange to ensure that the weight on both sides of the mounting flange is kept as balanced as possible. This not only improves the stability and accuracy of the test process, but also avoids the measurement error caused by weight imbalance, and improves the reliability and measurement accuracy of the entire torque test equipment.

[0016] Optionally, the flywheel is detachably provided with a plurality of second counterweight blocks along the circumferential direction, and the weight of the flywheel can be adjusted by adjusting the number of the second counterweight blocks on the flywheel.

[0017] By adopting the above technical solution, the total weight of the flywheel can be changed by adjusting the number of second counterweights on the flywheel, thereby adjusting the rotational inertia of the flywheel; this enables the equipment to adapt to torque test requirements of different ranges, thereby improving the applicability and flexibility of the equipment; the detachable design of the second counterweight facilitates quick replacement and debugging.

[0018] Optionally, a first bearing is provided on the output shaft of the reducer, and the mounting flange is coaxially rotatably connected to the output shaft of the reducer via the first bearing.

[0019] By adopting the above technical solution, the mounting flange is coaxially rotated with the output shaft of the reducer through the first bearing, which can effectively reduce the friction resistance during rotation, improve the transmission efficiency, and extend the service life of the equipment. This design makes the rotation of the mounting flange smoother, which helps to improve the accuracy and reliability of the test results.

[0020] Optionally, a sleeve is coaxially arranged on the outer circumference of the output shaft of the reducer, the sleeve is fixed on the outer shell of the reducer, a second bearing is arranged on the sleeve, and the mounting flange is coaxially rotatably connected with the sleeve via the second bearing.

[0021] By adopting the above technical solution, the sleeve and the second bearing arranged on the outer periphery of the output shaft of the reducer can eliminate the friction between the mounting flange and the output shaft of the reducer, and avoid the slight rotation of the mounting flange caused by the rotation of the output shaft of the reducer when the mounting flange is directly connected to the output shaft of the reducer, thereby ensuring that the lever measurement will not be subject to unnecessary interference, improving the test accuracy and the service life of the equipment; at the same time, this structural design makes the connection between the mounting flange and the reducer more stable, enhancing the overall stability of the equipment.

[0022] Optionally, a limit block is provided on the reducer, and the limit block is used to prevent the lever from rotating due to overload.

[0023] By adopting the above technical solution, the setting of the limit block effectively avoids excessive rotation of the lever due to overload, avoids safety accidents caused by overload, and ensures the safety and stability of the testing process.

[0024] Optionally, the transmission ratio of the reducer is variable.

[0025] By adopting the above technical solution, the reducer adopts a variable transmission ratio design, which can dynamically adjust the transmission ratio according to actual test requirements, thereby achieving precise control under different test conditions; this not only improves the test accuracy, but also expands the application range of the test equipment, enabling it to adapt to more types of brake testing needs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The flywheel brake torque test equipment can effectively utilize the rotational inertia of the flywheel to increase the output torque of the drive motor, and by using it in conjunction with a reducer, further amplify the output torque of the test equipment, making it suitable for a wider range of torque test needs and reducing the demand for high-cost high-torque motors; in addition, the lever design in the detection component is clever, converting the torque into a torque acting on the first sensor or the second sensor, thereby reducing the demand for a large-range torque sensor and further reducing the overall manufacturing cost of the equipment.

[0027] 2. By adopting the above technical solution, the setting of the counterweight assembly makes the weight on both sides of the mounting flange more balanced, thereby reducing the test error caused by the lever pressing the first sensor or the second sensor under its own weight, and improving the accuracy of the test results; at the same time, the balanced weight distribution helps to reduce vibration and noise during the operation of the equipment and extend the service life of the equipment.

[0028] 3. The design of the fixed and movable parts of the lever makes it possible to change the length of the lever arm by adjusting the length of the lever, thereby achieving accurate measurement of torques of different sizes; this design not only improves the applicability of the equipment, but also ensures that accurate measurement results can be obtained under different test conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0030] Figure 2 It is a schematic diagram of the internal structure of Example 1 of the present application.

[0031] Figure 3 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0032] Figure 4 It is a schematic diagram of the overall structure of Example 3 of the present application.

[0033] Explanation of the accompanying drawings: 100, brake disc; 200, brake caliper; 1, drive motor; 2, flywheel; 3, reducer; 4, mounting flange; 5, detection assembly; 51, lever; 511, fixed part; 512, moving part; 52, first sensor; 53, second sensor; 6, counterweight assembly; 61, counterweight seat; 62, first counterweight block; 63, second telescopic drive member; 7, first telescopic drive member; 8, second counterweight block; 9, first bearing; 10, bushing; 11, second bearing; 12, limit block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a flywheel brake torque testing device.

[0036] Example 1 Reference Figure 1 In this embodiment, the flywheel brake torque test equipment includes a drive motor 1, a flywheel 2, a reducer 3, a mounting flange 4 and a detection component 5; specifically, the drive motor 1 is used to provide a power source for the torque test; the drive motor 1 can be a permanent magnet synchronous motor or an AC servo motor; these two motors have the characteristics of high efficiency and low noise, and are suitable for precise torque testing; the drive motor 1 can control the speed and power through the inverter controller.

[0037] The flywheel 2 is detachably mounted on the output shaft of the drive motor 1, and the flywheel 2 is coaxial with the output shaft of the drive motor 1. The flywheel 2 can use the rotational inertia generated by its own rotation to increase the output torque of the drive motor 1; the flywheel 2 is made of high-strength alloy steel or cast iron to ensure that it has high quality and good mechanical properties. In other embodiments, multiple flywheels 2 can be installed on the output shaft of the drive motor 1, and the rotational inertia generated by the self-rotation of the flywheel 2 can be adjusted by adjusting the number of flywheels 2 to control the output torque of the drive motor 1.

[0038] Reference Figure 1 In this embodiment, the input shaft of the reducer 3 is connected to the output shaft of the driving motor 1 through a coupling, and the output shaft of the reducer 3 is used to fix the brake disc 100 of the brake; the reducer 3 can adopt a planetary gear reducer or a harmonic reducer with an adjustable transmission ratio; the planetary gear reducer has the advantages of high transmission efficiency and small size, and is suitable for high-speed and high-torque occasions; the harmonic reducer has the characteristics of high precision and low backlash, and is suitable for low-speed and high-precision occasions; the adjustable transmission ratio can make the output torque and speed of the reducer 3 be accurately controlled. In other embodiments, the reducer 3 can also use an ordinary gear reducer or a worm gear reducer.

[0039] Reference Figure 2 In this embodiment, a first bearing 9 is provided on the output shaft of the reducer 3, and the mounting flange 4 is coaxially rotatably connected with the output shaft of the reducer 3 through the first bearing 9, and the mounting flange 4 is used to mount the brake caliper 200 of the brake; the first bearing 9 can be a deep groove ball bearing or a needle bearing to ensure the rotation accuracy and stability of the mounting flange 4, and the number of the first bearings 9 is two. In other embodiments, the first bearing 9 can also be a cylindrical roller bearing, and the number of the first bearings 9 can be selected according to needs.

[0040] Reference Figure 2 In this embodiment, the detection component 5 includes a lever 51, a first sensor 52 and a second sensor 53. One end of the lever 51 is installed on one side of the mounting flange 4, and the other end extends in a direction away from the mounting flange 4. The extension direction of the lever 51 is perpendicular to the rotation axis of the mounting flange 4 and parallel to the horizontal plane. The lever 51 can be supported by aluminum alloy or magnesium-aluminum alloy to ensure that the lever 51 has good mechanical properties and a light weight; in other embodiments, the lever 51 can also be made of titanium alloy; the extension direction of the lever 51 may not be parallel to the horizontal plane.

[0041] The first sensor 52 and the second sensor 53 are arranged face to face on the housing of the reducer 3; the upper and lower surfaces of the end of the lever 51 away from the mounting flange 4 are respectively against the measuring surface of the first sensor 52 and the measuring surface of the second sensor 53; the first sensor 52 and the second sensor 53 can be selected from piezoelectric sensors or resistance strain gauge sensors, which have the characteristics of high sensitivity and fast response speed, and can accurately measure small torque changes. When the brake caliper 200 drives the mounting flange 4 to rotate, the lever 51 will deflect slightly, and the first sensor 52 or the second sensor 53 will detect this change, thereby measuring the torque of the brake caliper 200 when braking. It should be pointed out that the first sensor 52 and the second sensor 53 respectively measure the braking force of the brake caliper 200 when the brake disc 100 rotates counterclockwise and clockwise.

[0042] The reducer 3 is provided with a limit block 12 for preventing the lever 51 from rotating after being overloaded. The limit block 12 is fixed to the housing of the reducer 3 by screws. The limit block 12 is C-shaped with the C-shaped opening facing the reducer 3. The end of the lever 51 away from the mounting flange 4 is inserted into the C-shaped opening of the limit block 12 and has a certain amount of free space. In other embodiments, the first sensor 52 and the second sensor 53 can also be fixed to other fixed objects; the shape of the limit block 12 can also be any shape that can limit the rotation of the lever 51 after being overloaded.

[0043] The implementation principle of Example 1 is as follows: by installing a flywheel 2 on the output shaft of the drive motor 1, the rotational inertia of the flywheel 2 is used to increase the output torque of the drive motor 1, thereby achieving a large torque test without increasing the motor power; the use of the reducer 3 can further amplify the output torque of the drive motor 1 so that it reaches the required test range; the mounting flange 4 is coaxially rotatably connected to the output shaft of the reducer 3 through the first bearing 9; the rotation accuracy and stability of the mounting flange 4 are ensured; the design of the detection component 5 enables the braking torque of the brake caliper 200 to be accurately measured through a slight deflection of the lever 51 when the brake caliper 200 brakes; the setting of the limit block 12 can prevent the lever 51 from overloading and rotating to avoid damage to the equipment; this design not only reduces the cost of the equipment, but also improves the accuracy and reliability of the test, and is suitable for braking force detection of various brakes.

[0044] Example 2 Reference Figure 3 The difference between this embodiment 2 and embodiment 1 is that: the flywheel brake torque testing equipment also includes a counterweight assembly 6; a second counterweight block 8 is installed on the flywheel 2; and a shaft sleeve 10 is coaxially arranged on the outer periphery of the output shaft of the reducer 3.

[0045] Specifically, in this embodiment, the counterweight assembly 6 includes a counterweight seat 61 for keeping the weight on both sides of the mounting flange 4 as balanced as possible, the counterweight seat 61 is installed on the side of the mounting flange 4 away from the lever 51, the counterweight seat 61 and the lever 51 are an integrated structure, and the material of the counterweight seat 61 is the same as that of the lever 51. In other embodiments, the counterweight seat 61 can also be a separate structure, and the material of the counterweight seat 61 can be cast iron or alloy steel with a higher density.

[0046] The flywheel 2 is provided with a plurality of second counterweight blocks 8 equidistantly installed in the circumferential direction. The second counterweight blocks 8 are detachably installed on the side wall of the flywheel 2 by bolts. The weight of the flywheel 2 can be adjusted by adjusting the number of the second counterweight blocks 8 on the flywheel 2. The material of the second counterweight blocks 8 can also be selected to be cast iron or alloy steel with a higher density.

[0047] The shaft sleeve 10 and the housing of the reducer 3 are an integrated structure, a second bearing 11 is provided on the shaft sleeve 10, and the mounting flange 4 is coaxially rotatably connected with the shaft sleeve 10 through the second bearing 11; the second bearing 11 can be a deep groove ball bearing or a needle bearing to ensure the rotation accuracy and stability of the mounting flange 4, and the number of the second bearings 11 is two. In other embodiments, the first bearing 9 can also be a cylindrical roller bearing, and the number of the first bearings 9 can be selected according to needs.

[0048] The advantages of this embodiment 2 compared to embodiment 1 are: by setting the counterweight seat 61, the weight on both sides of the mounting flange 4 can be balanced as much as possible, reducing the influence of the lever 51's own weight pressing down on the first sensor 52 or the second sensor 53 on the measurement accuracy; the weight of the flywheel 2 is adjusted by adjusting the number of second counterweight blocks 8 on the flywheel 2, thereby controlling the rotational inertia of the flywheel 2 to adjust the gain of the flywheel 2 to the output shaft torque of the drive motor 1; the design of the sleeve 10 separates the mounting flange 4 from the output shaft of the reducer 3, thereby preventing the mounting flange 4 from making a slight rotation when the output shaft of the reducer 3 rotates.

[0049] Example 3 Reference Figure 4 The difference between this embodiment 3 and embodiment 2 is that: the lever 51 includes a fixed part 511 and a movable part 512; a first telescopic driving member 7 is provided between the fixed part 511 and the movable part 512; the counterweight assembly 6 also includes a first counterweight block 62 and a second telescopic driving member 63.

[0050] Specifically, in this embodiment, one end of the fixed portion 511 is installed on one side of the mounting flange 4 by bolts, and the other end of the fixed portion 511 extends in a direction away from the mounting flange 4, and the extension direction of the fixed portion 511 is perpendicular to the rotation axis of the mounting flange 4 and parallel to the horizontal plane. A slide groove is provided at the end of the fixed portion 511 away from the mounting flange 4, and the extension direction of the slide groove is parallel to the extension direction of the fixed portion 511; the movable portion 512 is slidably arranged in the slide groove provided on the fixed portion 511, and the sliding direction of the movable portion 512 is parallel to the extension direction of the slide groove.

[0051] Multiple groups of first sensors 52 and second sensors 53 are arranged along the sliding path of the moving part 512. The upper and lower surfaces of one end of the moving part 512 away from the fixed part 511 slide against the measuring surface of the first sensor 52 and the measuring surface of the second sensor 53 respectively; a first telescopic driving member 7 is arranged between the fixed part 511 and the moving part 512, and the first telescopic driving member 7 can be selected from one of an electric push rod, a cylinder, and a hydraulic cylinder; the first telescopic driving member 7 is fixed on the fixed part 511, and the output end of the first telescopic driving member 7 is connected to the moving part 512 to make the moving part 512 away from or close to the mounting flange 4. By adjusting the position of the moving part 512, different groups of first sensors 52 and second sensors 53 can be selected for measurement, so that torque tests of different ranges can be realized, expanding the scope of application of the equipment. In other embodiments, a gear rack transmission can also be used to drive the moving part 512 and the fixed part 511 to slide relative to each other.

[0052] The first counterweight block 62 is slidably set on the counterweight seat 61, and the second telescopic driving component 63 is set between the first counterweight block 62 and the counterweight seat 61. The second telescopic driving component 63 can be selected from one of an electric push rod, a cylinder, and a hydraulic cylinder; the second telescopic driving component 63 is fixed on the counterweight seat 61, and the output end of the second telescopic driving component 63 is connected to the first counterweight block 62 to make the first counterweight block 62 away from or close to the mounting flange 4.

[0053] Preferably, the first counterweight block 62 can be made of high-density metal material, such as cast iron or alloy steel, to ensure that it can produce significant weight changes within a shorter distance; the first sensor 52 and the second sensor 53 are both electrically connected to the second telescopic drive member 63, and the second telescopic drive member 63 can adjust the distance between the first counterweight block 62 and the mounting flange 4 according to the abutment force of the moving part 512 on the first sensor 52 or the second sensor 53 when there is no load, so as to balance the weight on both sides of the mounting flange 4 as much as possible.

[0054] The advantages of this embodiment 3 over embodiment 2 are: the position of the moving part 512 is dynamically adjusted during the test, and different groups of first sensors 52 and second sensors 53 can be selected for measurement, thereby realizing torque tests of different ranges; the second telescopic drive member 63 is used to adjust the distance between the counterweight block and the mounting flange 4, and after the moving part 512 adjusts the distance with the mounting flange 4, the counterweight on the side of the mounting flange 4 away from the moving part 512 can be dynamically adjusted to keep the two sides of the mounting flange 4 as balanced as possible; by electrically connecting the first sensor 52 and the second sensor 53 to the second telescopic drive member 63, the weight on both sides of the mounting flange 4 can be automatically balanced.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flywheel brake torque test device, characterized in that: include: A drive motor (1) for providing a power source for torque testing; A flywheel (2) is mounted on the output shaft of the drive motor (1), and the flywheel (2) can use the rotational inertia generated by its own rotation to increase the output torque of the drive motor (1); A reducer (3), wherein an input shaft of the reducer (3) is connected to an output shaft of the drive motor (1), and the output shaft of the reducer (3) is used to fix a brake disc (100) of a brake; A mounting flange (4), the mounting flange (4) being coaxially rotatably arranged with the output shaft of the reducer (3), and the mounting flange (4) being used for mounting a brake caliper (200) of a brake; The detection component (5) comprises a lever (51), a first sensor (52) and a second sensor (53); one end of the lever (51) is mounted on one side of a mounting flange (4), and the other end extends in a direction away from the mounting flange (4); the upper and lower surfaces of the end of the lever (51) away from the mounting flange (4) respectively abut against a measuring surface of the first sensor (52) and a measuring surface of the second sensor (53); when the brake caliper (200) drives the mounting flange (4) to rotate, the first sensor (52) or the second sensor (53) can measure the torque of the brake caliper (200) during braking.

2. A flywheel brake torque test device according to claim 1, characterized in that: It also includes a counterweight assembly (6), the counterweight assembly (6) including a counterweight seat (61), the counterweight seat (61) being mounted on a side of the mounting flange (4) facing away from the lever (51), the counterweight seat (61) being used to keep the weight on both sides of the mounting flange (4) as balanced as possible.

3. A flywheel brake torque test device according to claim 2, characterized in that: The lever (51) comprises a fixed portion (511) and a movable portion (512); one end of the fixed portion (511) is mounted on one side of the mounting flange (4), and the other end extends in a direction away from the mounting flange (4); the movable portion (512) is slidably mounted on the end of the fixed portion (511) away from the mounting flange (4), and the upper and lower surfaces of the end of the movable portion (512) away from the fixed portion (511) respectively slidably abut against a measuring surface of a first sensor (52) and a measuring surface of a second sensor (53); a first telescopic driving member (7) is provided between the fixed portion (511) and the movable portion (512); the first telescopic driving member (7) is used to move the movable portion (512) away from or towards the mounting flange (4); and a plurality of groups of first sensors (52) and second sensors (53) are provided along a path along which the movable portion (512) moves away from or towards the mounting flange (4) and are respectively used to slidably abut against the upper and lower surfaces of the end of the movable portion (512) away from the fixed portion (511).

4. A flywheel brake torque test device according to claim 3, characterized in that: The counterweight assembly (6) further comprises a first counterweight block (62) and a second telescopic driving member (63), wherein the first counterweight block (62) is slidably disposed on the counterweight seat (61), and the second telescopic driving member (63) is disposed between the first counterweight block (62) and the counterweight seat (61), and the second telescopic driving member (63) is used to move the first counterweight block (62) away from or close to the mounting flange (4).

5. A flywheel brake torque test device according to claim 4, characterized in that: The first sensor (52) and the second sensor (53) are both electrically connected to the second telescopic driving member (63). The second telescopic driving member (63) can adjust the distance between the first counterweight block (62) and the mounting flange (4) according to the abutment force of the moving part (512) on the first sensor (52) or the second sensor (53) when there is no load, so as to balance the weight on both sides of the mounting flange (4) as much as possible.

6. A flywheel brake torque test device according to claim 1, characterized in that: The flywheel (2) is detachably provided with a plurality of second counterweight blocks (8) along the circumferential direction, and the weight of the flywheel (2) can be adjusted by adjusting the number of the second counterweight blocks (8) on the flywheel (2).

7. A flywheel brake torque test device according to claim 1, characterized in that: The output shaft of the reducer (3) is provided with a first bearing (9), and the mounting flange (4) is coaxially rotatably connected to the output shaft of the reducer (3) via the first bearing (9).

8. A flywheel brake torque test device according to claim 1, characterized in that: A shaft sleeve (10) is coaxially arranged on the outer circumference of the output shaft of the reducer (3); the shaft sleeve (10) is fixed on the outer shell of the reducer (3); a second bearing (11) is arranged on the shaft sleeve (10); and the mounting flange (4) is coaxially rotatably connected to the shaft sleeve (10) via the second bearing (11).

9. A flywheel brake torque test device according to claim 1, characterized in that: The reducer (3) is provided with a limit block (12), and the limit block (12) is used to prevent the lever (51) from rotating due to overload.

10. A flywheel brake torque test device according to claim 1, characterized in that: The transmission ratio of the reducer (3) is variable.

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