Ball bearing torque detection device

Abstract

The utility model discloses a ball bearing torque detection device, including detection stage, loading seat, mounting seat and drive seat, and the bearing of being detected is detachably connected on mounting seat, and the loading axle and drive axle are arranged on the detection stage, and the drive structure is arranged on the drive seat, and the loading structure for driving the loading axle to make linear reciprocating motion is arranged on the loading seat, and the linkage structure for making the axial load on the bearing of being detected to load with the inclination angle is arranged on the loading axle, and the adjusting structure for the self -adaptation adjustment relative inclination angle between the bearing of being detected and mounting seat is arranged between mounting seat and the bearing of being detected, and the detection piece for detecting the torque value of the bearing of being detected when running under the inclination angle condition is arranged on the detection stage. The utility model solves the problem that the traditional bearing torque detection device can only detect under the horizontal or vertical condition, lacks the inclination angle condition simulation and can not detect the bearing torque under the condition with certain inclination angle.

Description

Technical Field

[0001] This utility model relates to the technical field of bearing testing devices, specifically a ball bearing torque testing device. Background Technology

[0002] Ball bearings, as a core component of mechanical transmission systems, are widely used in automobiles, precision machine tools, and construction machinery. Their operational stability and torque characteristics directly determine the transmission efficiency and service life of the entire equipment. In actual working conditions, the stress state of bearings is often complex and diverse, not limited to the conventional horizontal or vertical installation posture. For example, in automotive rack and pinion steering systems, the meshing transmission between the input shaft and the output rack causes the steering bearing to bear a load with an inclined angle. In precision transmission equipment, due to installation errors, operating vibrations, or component deformation, bearings are often in an off-center load state and need to withstand inclined torques in non-positive load directions. In existing technologies, bearing torque detection devices are mostly designed for ideal horizontal or vertical working conditions. Their structure typically includes a drive unit, a loading unit, and a torque detection unit: the drive unit drives the inner or outer ring of the bearing to rotate through the drive shaft to simulate the normal operating state, the loading unit applies an axial positive load through the loading shaft, and the torque detection unit collects the bearing operating torque under this ideal working condition. However, the loading units of such devices mostly adopt positive load loading structures, lacking a design that allows axial loads to act on the bearing at an inclined angle, and there is no adaptive off-center load adjustment mechanism between the mounting base and the bearing, making it impossible to simulate the bearing tilt or off-center load conditions that are common in actual applications.

[0003] Secondly, existing devices cannot detect the torque value of bearings under tilt angle conditions, making it difficult to accurately assess the torque characteristics of bearings under actual stress. This makes it impossible to determine the optimal matching parameters between bearings and related components based on actual working conditions during the equipment design phase, which may lead to insufficient bearing selection or installation accuracy. At the same time, it is impossible to predict the torque change pattern of bearings under tilt conditions in advance. During long-term operation, abnormal torque can easily lead to problems such as accelerated bearing wear, abnormal noise, and excessive temperature rise. In severe cases, it can cause premature bearing failure or even cause the entire equipment to shut down. Especially in safety-critical areas such as automotive steering systems, such defects may also pose significant safety hazards. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ball bearing torque detection device, which solves the problems of traditional bearing torque detection devices that can only detect torque in horizontal or vertical conditions, lack simulation of tilt angle conditions, and cannot detect bearing torque in conditions with a certain tilt angle.

[0005] To achieve the above objectives, this utility model provides a ball bearing torque testing device, including a testing platform, a loading seat, a mounting seat, and a drive seat. The loading seat, drive seat, and mounting seat are all detachably connected to the testing platform. A bearing to be tested is detachably connected to the mounting seat. A loading shaft and a drive shaft are provided on the testing platform. The drive seat has a drive structure for driving the bearing to be tested to operate via the drive shaft to simulate the actual operating conditions of the bearing. The loading seat has a loading structure for driving the loading shaft to perform linear reciprocating motion to apply an axial load to the bearing to be tested at a certain frequency. The loading shaft has a linkage structure that works in conjunction with the loading structure to apply the axial load acting on the bearing to be tested at an inclined angle. An adjustment structure is provided between the mounting seat and the bearing to be tested for adaptively adjusting the relative inclination angle between the bearing to be tested and the mounting seat when the bearing to be tested is subjected to an axial load and is unevenly loaded. The testing platform has a testing component for detecting the torque value of the bearing to be tested when operating under inclined angle conditions.

[0006] The advantages of adopting the above technical solution are as follows: The loading seat, drive seat, and mounting seat are detachably connected to the testing table, facilitating the replacement of adaptable components according to the specifications of the bearing to be tested, improving the device's versatility and simplifying maintenance. The mounting seat is detachably connected to the bearing to be tested, facilitating bearing disassembly and assembly. The drive structure drives the bearing to rotate via a drive shaft, simulating actual bearing operating conditions and providing a realistic scenario basis for torque testing. The loading structure drives the loading shaft in linear reciprocating motion, applying axial loads at a set frequency to meet different loading requirements. Simultaneously, the linkage structure, in conjunction with the loading structure, applies the load at an inclined angle, filling the gap in traditional devices that cannot simulate inclined operating conditions. Furthermore, the adjustment structure adaptively adjusts the relative inclination angle when the bearing is unevenly loaded, preventing bearing jamming or damage and ensuring operational stability. The testing component can then accurately detect torque values ​​under inclined operating conditions, providing a basis for evaluating bearing torque characteristics. Through the above technical design, the limitations of traditional devices, which can only test in horizontal or vertical conditions, are comprehensively solved, improving the comprehensiveness and reliability of the testing.

[0007] The present invention further comprises: a mounting hole is provided on the mounting base, the mounting hole is coaxially arranged with the loading shaft, a self-aligning ring is movably arranged in the mounting hole, the inner peripheral wall of the self-aligning ring is sleeved on the outer ring of the bearing to be tested, the outer peripheral wall of the self-aligning ring is connected to the two side walls with a smooth arc surface to form a first self-aligning surface, a second self-aligning surface is provided circumferentially on the inner peripheral wall of the mounting hole, the radial cross sections of the first self-aligning surface and the second self-aligning surface are both arc-shaped, and the first self-aligning surface and the second self-aligning surface are in contact and fit together.

[0008] The advantages of adopting the above technical solution are as follows: the mounting hole and the loading shaft are coaxially set, ensuring that the loading shaft is aligned with the bearing to be tested and avoiding detection deviations caused by eccentric loading; the inner circumferential wall of the self-aligning ring, which is movable in the mounting hole, is fitted with the outer ring of the bearing, which can drive the bearing to move synchronously. Moreover, the first self-aligning surface formed by the outer circumferential wall of the self-aligning ring and the two side walls is arc-shaped and fits the radial section of the second self-aligning surface of the inner circumferential wall of the mounting hole. This enables adaptive tilt adjustment when the bearing is unbalanced, avoiding bearing damage caused by rigid constraints, ensuring stable operation of the bearing in the tilted state, restoring the actual tilted working condition. At the same time, the arc-shaped self-aligning surface fits smoothly, reducing frictional resistance during the tilt adjustment process, avoiding the impact of poor adjustment on detection efficiency, and improving detection accuracy and device practicality.

[0009] The present invention further comprises: the linkage structure including a loading disk and several loading pins disposed at the beginning of the loading shaft, the several loading pins being detachably connected to the loading disk, the loading shaft being coaxially connected to the loading disk, and the end of the loading pin being a loading end for contacting the outer ring of the bearing to be tested.

[0010] The advantages of adopting the above technical solution are as follows: In the above technology, the loading disk and the loading shaft are coaxially connected to ensure the coaxiality of load transmission and avoid uneven bearing force caused by eccentric loading. The detachable loading pins on the loading disk facilitate the replacement of loading pins of different specifications according to the testing requirements, reducing component replacement costs and simplifying maintenance. The loading end of the loading pin contacts the outer ring of the bearing, which can transfer the axial load of the loading shaft to the bearing, realizing the effective application of load. By adjusting the gap between the loading ends of several loading pins and the bearing to be tested, the loading contact sequence between different loading pins and the bearing to be tested can be realized, thereby realizing tilt angle loading, which simplifies the tilt loading implementation method and reduces the complexity of the device.

[0011] The present invention further comprises: the number of loading pins is at least three, and the three loading pins are disposed on the loading disk and arranged in a triangular shape.

[0012] The advantages of adopting the above technical solution are as follows: The technology uses at least three loading pins arranged in a triangular pattern. This triangular arrangement ensures a more uniform load distribution on the outer ring of the bearing, preventing excessive local stress and deformation caused by single-point or two-point loading, thus protecting the bearing under test. Furthermore, the cooperation of several loading pins enhances load transmission reliability, preventing test interruption in case of single pin failure and ensuring the continuity of the testing process. The triangular structure provides good mechanical stability, reducing loading disc sway during loading, ensuring a stable tilt angle, and preventing load shift due to loading disc instability. Additionally, the multiple loading pins allow for various tilt angles by adjusting their relative positions, eliminating the need for frequent replacement of loading components, improving angle adjustment flexibility, expanding the device's simulation range for different tilting conditions, and enhancing the versatility of the testing applications.

[0013] The present invention further comprises: an adjustment groove is provided on the loading disk for each loading pin position, each loading pin passes through the adjustment groove and the axis of the loading pin is in the same direction as the axis of the loading shaft, the adjustment groove is provided along the diameter of the loading disk and the opening direction of the adjustment groove is perpendicular to the axis of the loading shaft.

[0014] The advantages of adopting the above technical solution are as follows: The adjustment groove on the loading disk corresponding to the loading pin is along the diameter direction and perpendicular to the loading shaft axis, facilitating radial adjustment of the loading pin position along the loading disk. Different tilt angles can be adjusted without replacing the loading disk, simplifying angle adjustment operations and improving efficiency. Furthermore, the loading pin passes through the adjustment groove and its axis is in the same direction as the loading shaft, ensuring that the loading pin can still transmit load axially after adjustment, avoiding detection errors caused by load direction deviation. The adjustment groove provides adjustment space for the loading pin, allowing for flexible changes in the loading pin spacing according to the bearing specifications and testing conditions, adapting to different tilt angle requirements, expanding the device's testing applicability. Simultaneously, it eliminates the need for additional processing of loading disks of different specifications, reducing manufacturing costs. Moreover, the adjustment process requires no complex tools, improving operational convenience, reducing testing preparation time due to component replacement, and increasing testing efficiency.

[0015] The present invention further includes: two locking screw heads threadedly connected to the loading pin, the two locking screw heads being respectively located on both sides of the loading disk and respectively abutting against the side walls of the loading disk to fix the loading pin in the adjustment groove.

[0016] The advantages of adopting the above technical solution are: the two locking screws connected to the loading pin in the above technology are respectively located on both sides of the loading disk. The loading pin is fixed by abutting against the side walls of the loading disk, which prevents the loading pin from being displaced due to vibration or load during the loading process, ensures the stability of the tilt angle, and avoids fluctuations in the detection data.

[0017] The present invention further comprises: the loading structure including a ball screw assembly disposed on the loading seat; the ball screw assembly including a screw, a nut, and a rolling element movably disposed between the screw and the nut; the nut being movably engaged with the screw through the rolling element to achieve relative movement of the nut along the length direction of the screw; the end of the nut being coaxially connected to the end of the loading shaft; and the loading structure including a first motor disposed on the loading seat, the output end of the first motor being coaxially connected to the screw.

[0018] The advantages of adopting the above technical solution are as follows: In the above technology, the ball screw assembly, through the cooperation of the screw, nut, and rolling elements, realizes the linear reciprocating motion of the loading shaft, making the transmission process smooth and without obvious fluctuations, reducing the impact when applying load, and ensuring loading stability; the nut is coaxially connected to the loading shaft, ensuring that the load is transmitted axially and avoiding uneven bearing force caused by eccentric loading; the first motor is coaxially connected to the screw, realizing precise power transmission, and it is easy to adjust the moving speed of the loading shaft by controlling the motor speed, that is, control the load application frequency, without the need for an additional transmission mechanism, simplifying the loading structure and improving transmission efficiency; the ball screw assembly has high transmission efficiency, reduces power loss, reduces motor load, and extends the service life of the equipment; the operating principle of the ball screw assembly is consistent with the screw transmission principle in the prior art, so it will not be described in detail.

[0019] The present invention further includes a pressure sensor connected between the end of the nut and the end of the loading shaft for detecting the load applied by the loading shaft to the bearing to be tested.

[0020] The advantages of adopting the above technical solution are as follows: The pressure sensor connected between the nut end and the loading shaft end can monitor the load applied to the bearing under test in real time, allowing operators to easily monitor the loading status, avoid overload damage to the bearing, and protect the component under test. The pressure sensor provides real-time data for adjusting the load, facilitating precise load control and ensuring the loading process conforms to the set operating conditions, reducing inaccurate test data due to load deviations. No separate load detection equipment is required; the integrated design simplifies the overall structure of the device, reduces the number of external component connections, lowers signal transmission errors, and improves load detection accuracy. Simultaneously, the pressure sensor enables closed-loop control of the loading process, automatically adjusting the loading force through feedback signals, enhancing the stability and accuracy of the loading process, reducing errors caused by manual intervention, and improving the reliability and repeatability of the test results. Since the pressure sensor is existing technology, its structure, function, and electrical connection with other components will not be elaborated further.

[0021] The present invention further includes the following configuration: the drive structure includes a second motor mounted on a drive base, and the output end of the second motor is coaxially connected to the drive shaft.

[0022] The advantages of adopting the above technical solution are: the output end of the second motor is coaxially connected to the drive shaft, realizing direct power transmission, reducing power loss and speed deviation caused by intermediate transmission links, ensuring stable operating speed of the bearing under test, and providing a basis for simulating actual operating conditions; the drive shaft is detachably connected to the inner ring bore of the bearing under test so that when the second motor drives the drive shaft to rotate, the drive shaft can synchronously drive the inner ring of the bearing under test to rotate, thereby realizing the operation of the bearing under test.

[0023] The present invention further includes a torque sensor connected between the output end of the second motor and the drive shaft, wherein the torque sensor is a detection element.

[0024] The advantages of adopting the above technical solution are: In this technology, the torque sensor connected between the output end of the second motor and the drive shaft serves as a detection element, connected in series in the power transmission path. It can directly collect the torque value of the bearing under test during operation, reducing detection errors and improving torque detection accuracy. Simultaneously, the torque sensor can monitor the torque changes of the bearing under tilting conditions in real time, promptly capturing abnormal torque situations and providing direct data support for evaluating the bearing's torque characteristics. Since the torque sensor in the above technology is existing technology, its structure, function, and electrical connection method with other components will not be elaborated further. Attached Figure Description

[0025] Figure 1 This is a three-dimensional view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a three-dimensional view of the loading disk and its linkage structure in this utility model, showing the fit between the loading disk and the bearing to be tested. Detailed Implementation

[0026] The utility model provides a ball bearing torque detection device, comprising a detection table 1, a loading seat 11, an installation seat 12 and a driving seat 13, wherein the loading seat 11, the driving seat 13 and the installation seat 12 are all detachably connected to the detection table 1, a bearing 14 to be detected is detachably connected to the installation seat 12, a loading shaft 2 and a driving shaft 3 are arranged on the detection table 1, a driving structure for driving the bearing 14 to be detected to operate through the driving shaft 3 to simulate the actual operating condition of the bearing is arranged on the driving seat 13, a loading structure for driving the loading shaft 2 to perform linear reciprocating motion to apply axial load to the bearing 14 to be detected at a certain frequency is arranged on the loading seat 11, a linkage structure for cooperating with the loading structure in linkage so that the axial load acting on the bearing 14 to be detected is loaded at an inclined angle is arranged on the loading shaft 2, an adjustment structure for adaptively adjusting the relative inclination angle between the bearing 14 to be detected and the installation seat 12 when the bearing 14 to be detected is eccentrically loaded under axial load is arranged between the installation seat 12 and the bearing 14 to be detected, a detection member for detecting the torque value of the bearing 14 to be detected when it operates under the inclined angle working condition is arranged on the detection table 1, an installation hole 121 is opened on the installation seat 12, the installation hole 121 is arranged coaxially with the loading shaft 2, a self-aligning ring 15 is movably arranged in the installation hole 121, an inner circumferential wall of the self-aligning ring 15 is sleeved on an outer ring of the bearing 14 to be detected, an outer circumferential wall of the self-aligning ring 15 is connected with two side walls through a smooth arc surface and forms a first self-aligning surface 151, a second self-aligning surface 122 is circumferentially opened on an inner circumferential wall of the installation hole 121, radial sections of the first self-aligning surface 151 and the second self-aligning surface 122 are both arc-shaped, the first self-aligning surface 151 is in contact with and fits against the second self-aligning surface 122, the linkage structure comprises a loading disc 21 arranged at a starting end of the loading shaft 2 and a plurality of loading pins 22, the plurality of loading pins 22 are detachably connected to the loading disc 21, the loading shaft 2 is coaxially connected with the loading disc 21, a terminal end of the loading pin 22 is a loading end 221 for contacting with the outer ring of the bearing 14 to be detected, the number of the plurality of loading pins 22 is at least three, the three loading pins 22 are separately arranged on the loading disc 21 and arranged in a triangular distribution, an adjustment groove 23 is opened on the loading disc 21 corresponding to the position of each loading pin 22, each loading pin 22 is arranged through the adjustment groove 23, and the axial direction of the loading pin 22 is arranged in the same direction as the axial direction of the loading shaft 2, the adjustment groove 23 is opened along the diameter direction of the loading disc 21, and the opening direction of the adjustment groove 23 is perpendicular to the axial direction of the loading shaft 2, two locking screw heads 24 are threadedly connected to the loading pin 22, the two locking screw heads 22 are separately arranged on two sides of the loading disc 21, and the two locking screw heads 24 respectively abut and cooperate with two side walls of the loading disc 21 to realize the fixation of the loading pin 22 in the adjustment groove 23, the loading structure comprises a ball screw assembly arranged on the loading seat 11,The ball screw assembly includes a screw 4, a nut 41, and rolling elements movably disposed between the screw 4 and the nut 41. The nut 41 moves relative to the screw 4 along its length through the rolling elements. The end of the nut 41 is coaxially connected to the end of the loading shaft 2. The loading structure includes a first motor 42 mounted on a loading seat 11, with its output coaxially connected to the screw 4. A pressure sensor 43 is connected between the end of the nut 41 and the end of the loading shaft 2 to detect the load applied to the bearing 14 under test by the loading shaft 2. The driving structure includes a second motor 31 mounted on a drive seat 13, with its output coaxially connected to the drive shaft 3. A torque sensor 32 is connected between the output of the second motor 31 and the drive shaft 3; the torque sensor 32 serves as the detection element.

[0027] Overall operation mode of the ball bearing torque testing device: 1. First, according to the specifications of the ball bearing to be tested, complete the equipment assembly and parameter preset: fix the loading seat, drive seat, and mounting seat to the corresponding positions on the testing table using a detachable structure, ensuring that the drive shaft and loading shaft axes are collinear; insert the matching self-aligning ring into the mounting hole of the mounting seat, then fix the outer ring of the bearing to be tested to the inner circumferential wall of the self-aligning ring, and fix the inner ring to the end of the drive shaft to complete the bearing positioning; according to the tilt angle required for testing, loosen the locking nut on the loading pin, adjust the radial position of each loading pin along the adjustment groove of the loading plate, so that the loading end of the loading pin forms a preset height difference, and tighten the locking nut to fix the loading pin after adjustment; set the operating speed of the second motor (simulating the actual operating speed of the bearing), the loading frequency of the first motor, and the target load through the controller, and at the same time complete the signal connection calibration of the torque sensor, pressure sensor, and controller.

[0028] 2. Start the drive structure, the second motor is powered on and runs, and the power is directly transmitted to the drive shaft through the output end (because the motor and drive shaft are coaxially connected, the transmission loss is reduced). The drive shaft drives the inner ring of the bearing to be tested to rotate synchronously. At this time, the torque sensor (connected in series between the motor and the drive shaft) enters the working state in real time, converts the torque change of the inner ring of the bearing into an electrical signal and transmits it to the controller to initially monitor the basic torque data when there is no tilt load, and confirm that the drive system is operating normally and without jamming.

[0029] 3. The loading structure is activated. After the first motor is powered on, it drives the screw of the ball screw assembly to rotate. The nut moves smoothly along the length of the screw through the rolling elements, thereby pushing the loading shaft to move synchronously in a straight line. The loading shaft drives the loading disc and loading pin to approach the outer ring of the bearing to be tested. After the loading end of the loading pin contacts the end face of the bearing outer ring, an axial load is applied. The pressure sensor (connected in series between the nut and the loading shaft) detects the load value in real time and feeds it back to the controller. When the load reaches the preset value, the controller adjusts the speed of the first motor to keep the loading shaft outputting a stable load. At the same time, because the loading pin has a preset radial position difference, the axial load applied by the loading shaft acts on the bearing outer ring at an inclined angle through the loading pin. After the bearing outer ring is subjected to the inclined load, it drives the self-aligning ring to deflect synchronously. The self-aligning ring adaptively adjusts the relative tilt angle with the mounting seat through the arc-shaped fitting structure of the first self-aligning surface and the second self-aligning surface of the mounting hole, ensuring that the bearing still operates stably around the drive shaft in an inclined state, avoiding damage caused by rigid constraints.

[0030] 4. Under the condition that the bearing is tilted and the load is stable, the torque sensor continuously collects the torque data of the bearing during operation, transmits it to the controller in real time, and generates a torque change curve on the display terminal; the controller synchronously receives the load data of the pressure sensor. If the load fluctuates, it automatically adjusts the operation of the ball screw driven by the first motor to maintain load stability and ensure that the torque detection is carried out under the set working conditions; during the detection process, the speed of the second motor, the loading frequency of the first motor, or the position of the loading pin can be adjusted by the controller as needed to simulate torque detection under different actual working conditions. All detection data is automatically stored by the controller for subsequent analysis.

[0031] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A ball bearing torque testing device, comprising a testing platform, a loading seat, a mounting seat, and a drive seat, wherein the loading seat, drive seat, and mounting seat are all detachably connected to the testing platform, a bearing to be tested is detachably connected to the mounting seat, a loading shaft and a drive shaft are provided on the testing platform, and the drive seat is provided with a drive structure for driving the bearing to be tested to operate via the drive shaft to simulate the actual operating conditions of the bearing, characterized in that: The loading seat is provided with a loading structure for driving the loading shaft to perform linear reciprocating motion to apply axial load to the bearing under test at a certain frequency. The loading shaft is provided with a linkage structure for working in conjunction with the loading structure to apply the axial load acting on the bearing under test at an inclined angle. An adjustment structure is provided between the mounting seat and the bearing under test for adaptively adjusting the relative inclination angle between the bearing under test and the mounting seat when the bearing under test is subjected to axial load and is off-center. The testing platform is provided with a testing component for detecting the torque value of the bearing under test when it operates under inclined angle conditions.

2. The ball bearing torque detection device according to claim 1, characterized in that: The mounting base has a mounting hole, which is coaxial with the loading shaft. A self-aligning ring is movably disposed in the mounting hole. The inner peripheral wall of the self-aligning ring is sleeved on the outer ring of the bearing to be tested. The outer peripheral wall of the self-aligning ring is connected to the two side walls with a smooth arc surface to form a first self-aligning surface. A second self-aligning surface is circumferentially formed on the inner peripheral wall of the mounting hole. The radial cross-sections of the first and second self-aligning surfaces are both arc-shaped. The first and second self-aligning surfaces are in contact with and fit together.

3. The ball bearing torque detection device according to claim 2, characterized in that: The linkage structure includes a loading disk and several loading pins located at the beginning of the loading shaft. The loading pins are detachably connected to the loading disk. The loading shaft and the loading disk are coaxially connected. The end of each loading pin is a loading end for contacting the outer ring of the bearing to be tested.

4. The ball bearing torque detection device according to claim 3, characterized in that: The number of loading pins is at least three, and the three loading pins are disposed on the loading disk and arranged in a triangular shape.

5. The one according to claim 3, characterized in that: An adjustment groove is provided on the loading disk for each loading pin position. Each loading pin passes through the adjustment groove and the axis of the loading pin is in the same direction as the axis of the loading shaft. The adjustment groove is provided along the diameter of the loading disk and the direction of the adjustment groove is perpendicular to the axis of the loading shaft.

6. The ball bearing torque detection device according to claim 5, characterized in that: The loading pin is threaded with two locking screws, which are located on both sides of the loading disk and abut against the side walls of the loading disk to fix the loading pin in the adjustment groove.

7. The ball bearing torque detection device according to claim 1, characterized in that: The loading structure includes a ball screw assembly mounted on a loading seat. The ball screw assembly includes a screw, a nut, and a rolling element movably mounted between the screw and the nut. The nut moves relative to the screw along its length through the rolling element and the screw. The end of the nut is coaxially connected to the end of the loading shaft. The loading structure also includes a first motor mounted on the loading seat, with the output end of the first motor coaxially connected to the screw.

8. The ball bearing torque detection device according to claim 7, characterized in that: A pressure sensor is connected between the end of the nut and the end of the loading shaft to detect the load applied to the bearing under test by the loading shaft.

9. The ball bearing torque detection device according to claim 1, characterized in that: The drive structure includes a second motor mounted on a drive base, and the output end of the second motor is coaxially connected to the drive shaft.

10. A ball bearing torque detection device according to claim 9, characterized in that: A torque sensor is connected between the output end of the second motor and the drive shaft, and the torque sensor is the detection element.

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