Tension and torsion anti-interference testing device

Abstract

The tension and torsion anti-interference testing device comprises a supporting assembly, a tension testing assembly and a torsion testing assembly, the supporting assembly comprises a sleeve seat, a linear bearing, a transmission shaft and a material carrying plate, the linear bearing is arranged in the sleeve seat, the transmission shaft is arranged in the linear bearing in a penetrating mode, and the material carrying plate is arranged at the top of the linear bearing; the tension testing assembly comprises a tension sensor, a transmission block, a threaded sleeve and a plane bearing, the tension sensor is arranged in the sleeve seat, the transmission block is arranged at the testing end of the tension sensor, the threaded sleeve is arranged on the transmission shaft, and the plane bearing is arranged on the side face, close to the transmission block, of the threaded sleeve; the torsion testing assembly comprises a torsion sensor, a transmission pin and two unloading bearings, the torsion sensor is arranged in the sleeve seat, the transmission pin is radially arranged at one end, close to the torsion sensor, of the transmission shaft, the two unloading bearings are rotatably arranged at the two ends of the transmission pin respectively, and the transmission shaft is used for driving the unloading bearings to be in contact with or away from the torsion sensor.

Description

Technical Field

[0001] The invention relates to the technical field of motor testing, and in particular to a tension-torsion anti-interference testing device. Background Art

[0002] In recent years, with the rapid development of the drone market, the scale of the industry has gradually expanded, and the application scenarios have gradually shifted from consumer drones to industrial drones. The economic phenomenon of "low-altitude heat" has become increasingly obvious. Heavy-load application drones are urgently needed in application fields such as geographic surveying and mapping, agricultural and forestry plant protection, patrol inspection, emergency rescue, and express delivery of materials. Solving the load problem will become the key to its rapid development. For heavy-load application drones, a test platform with versatility, adaptability to different scenarios, precise measurement, strong anti-interference, and simulation of real stress states is needed, so as to achieve accurate measurement and evaluation of motor tension, torque, speed, current, voltage, temperature, airspeed, and motor efficiency, so as to simulate the real simulation conditions of the motor as much as possible.

[0003] For example, a Chinese patent document with publication number CN116593055A discloses a motor tension and torque coaxial test device, which includes a test seat, a tension test assembly and a torque test assembly. A central axis is rotatably arranged in the test seat, and a loading plate for fixing the motor is arranged on the top of the central axis. The tension test assembly includes a tension sensor and a rotating part. The rotating part is rotatably arranged on the central axis. The tension sensor is arranged on the test seat, and the tension sensor is coaxially arranged with the central axis, and the test end of the tension sensor is connected to the rotating part. The tension sensor is used to detect the axial force of the central axis; the torque test assembly includes a torque sensor, a torsion ring and a pin. The torque sensor is arranged on the test seat, and the torque sensor is coaxially arranged with the central axis. The torsion ring is arranged on the test end of the torque sensor, the pin is arranged on the central axis, and the pin is clamped with the torsion ring. When the central axis is used to rotate, the pin drives the torsion ring to rotate, so that the torque sensor detects the torque of the central axis. Furthermore, a linear bearing and a rotating bearing are arranged in the test seat, and then the central shaft is installed in the linear bearing and the rotating bearing, so that the central shaft rotates relative to the test seat. In this way, the motor is installed on the loading plate, and after the motor is started, axial tension and torque are applied to the central shaft, wherein the axial tension is transmitted to the tension sensor through the rotating member for detection, and the torque is applied to the torsion ring through the pin, thereby enabling the torque sensor to detect.

[0004] However, the existing detection device has the following problems in actual use: for large-load motors, such as motors for heavy-load drones with a load of 200kg and a torque of 100N.m, when using the existing test device, the central axis will vibrate violently because the motor blades have a larger swing amplitude than the blades of ordinary motors. This vibration cannot be eliminated by the existing rotating bearings, and after a period of use, serious wear will occur between the rotating bearings and the central axis, which not only requires frequent replacement of the central axis, but also wastes the tester's time and increases material and labor costs. Moreover, in the existing test device, the tension sensor and the central axis are always connected through the rotating part, resulting in a difference between the tension measured by the tension sensor and the actual value. Therefore, in order to solve the above problems, the tension-torsion anti-interference test device of the present application is proposed. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a tension-torsion anti-interference testing device that can effectively resist vibration and improve the reliability of tension testing and torque testing.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A tension and torque anti-interference testing device, comprising:

[0008] A support assembly, the support assembly comprising a sleeve, a linear bearing, a transmission shaft and a carrier plate, the linear bearing being arranged in the sleeve, the transmission shaft being passed through the linear bearing, and the carrier plate being arranged on the top of the linear bearing;

[0009] A tension test assembly, the tension test assembly comprising a tension sensor, a transmission block, a screw sleeve and a plane bearing, the tension sensor being arranged in the sleeve, the tension sensor being located below the linear bearing, and the transmission shaft passing through the tension sensor, the transmission block being arranged on the test end of the tension sensor, the screw sleeve being arranged on the transmission shaft, the plane bearing being arranged on a side surface of the screw sleeve close to the transmission block, and the transmission shaft being used to drive the plane bearing to abut against or away from the transmission block; and

[0010] A torque testing assembly, the torque testing assembly includes a torque sensor, a transmission pin and two unloading bearings, the torque sensor is arranged in the sleeve, and the torque sensor is located below the transmission shaft, the transmission pin is radially arranged on one end of the transmission shaft close to the torque sensor, the two unloading bearings are rotatably arranged at both ends of the transmission pin, and the two unloading bearings are both located in the test end of the torque sensor, and the transmission shaft is used to drive the unloading bearings to contact or move away from the torque sensor.

[0011] Optionally, a side surface of the transmission block close to the plane bearing is a smooth structure.

[0012] Optionally, the plane bearing includes a plane washer and a plurality of balls, the plane washer is arranged on a side surface of the screw sleeve close to the transmission block, and each of the balls is rotatably arranged on the plane washer.

[0013] Optionally, an annular groove is formed on a side surface of the screw sleeve close to the transmission block, and each of the balls is located in the annular groove.

[0014] Optionally, the screw sleeve is provided with an internal thread, and the outer side wall of the transmission shaft is provided with an external thread, and the internal thread is threadedly engaged with the external thread.

[0015] Optionally, the tensile testing assembly further comprises a shaft sleeve, wherein the shaft sleeve is arranged on the transmission shaft and the shaft sleeve abuts against the threaded sleeve.

[0016] Optionally, the torque testing assembly also includes a locating pin, which is radially arranged on the transmission shaft, and the transmission shaft is used to drive the locating pin and the transmission pin to rotate synchronously. When the unloading bearing abuts against the test end of the torque sensor, the locating pin is separated from the sleeve, and when the locating pin abuts against the sleeve, the transmission pin is separated from the test end of the torque sensor.

[0017] Optionally, the sleeve includes a fixed seat and a fixed sleeve, the linear bearing is arranged in the fixed seat, the tension sensor is arranged in the fixed seat, the fixed sleeve is arranged at the bottom of the fixed seat, and the torque sensor is arranged in the fixed sleeve.

[0018] Optionally, a clearance groove is provided on the inner side wall of the fixing seat, and the end of the positioning pin is located in the clearance groove.

[0019] Optionally, the tension test assembly further includes a silicone sheet, which is sleeved on the transmission shaft and is used to abut against the tension sensor.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] 1. By fixing a linear bearing of sufficient length in the sleeve, and then fittingly passing the drive shaft through the linear bearing, only the linear bearing is used to support the drive shaft, reducing the use of transmission parts, and effectively resisting the vibration generated by the motor when testing a large-load motor.

[0022] 2. When the motor is tested, the transmission shaft will rotate due to the torque of the motor and rise due to the tension. For the tension sensor, under the action of the plane bearing, the torque of the transmission shaft will not be transmitted to the transmission block, so that the tension sensor only detects the tension of the transmission shaft. For the torque sensor, under the action of the unloading bearings at both ends of the transmission pin, the tension is prevented from acting on the torque sensor, so that the torque sensor only detects the torque of the transmission shaft. Therefore, the test accuracy of the motor torque and tension can be improved, and the torque and tension can be prevented from interfering with each other during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a tension-torsion anti-interference testing device according to one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic cross-sectional view of the tension and torque anti-interference testing device shown;

[0026] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the tension-torsion anti-interference testing device at another angle shown;

[0027] Figure 4 for Figure 1 A schematic diagram of a partial cross-sectional structure of a tension-torsion anti-interference test device shown;

[0028] Figure 5 for Figure 1 A partial structural schematic diagram of the tension and torque anti-interference testing device shown;

[0029] Figure 6 It is a schematic structural diagram of a fixing base according to one embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 10. Tension and torque anti-interference test device; 100. Support assembly; 200. Tension test assembly; 300. Torque test assembly; 110. Sleeve; 120. Linear bearing; 130. Transmission shaft; 140. Loading plate; 210. Tension sensor; 220. Transmission block; 230. Screw sleeve; 240. Plane bearing; 310. Torque sensor; 320. Transmission pin; 330. Unloading bearing; 241. Plane washer; 242. Ball; 231. Annular groove; 250. Bushing; 340. Positioning pin; 111. Fixed seat; 112. Fixed sleeve; 1111. Air avoidance groove; 260. Silicone sheet; 270. O-ring. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show preferred embodiments of the present invention.

[0033] like Figures 1 to 5 As shown, a tension and torque anti-interference testing device 10 includes a support assembly 100, a tension testing assembly 200 and a torque testing assembly 300. The support assembly 100 includes a sleeve 110, a linear bearing 120, a transmission shaft 130 and a carrier plate 140. The linear bearing 120 is arranged in the sleeve 110, the transmission shaft 130 is passed through the linear bearing 120, and the carrier plate 140 is arranged on the top of the linear bearing 120.

[0034] It should be noted that a mounting hole facing in the vertical direction is provided in the sleeve 110, and the linear bearing 120 is inserted and installed in the mounting hole. For example, in order to improve the structural strength between the linear bearing 120 and the sleeve 110 and avoid a gap between the linear bearing 120 and the sleeve 110, glue is applied to the inner wall of the mounting hole so that the linear bearing 120 is inserted into the mounting hole and fixed by bonding. Further, the transmission shaft 130 passes through the linear bearing 120 in an adaptive manner. For example, in order to reduce the friction between the transmission shaft 130 and the linear bearing 120 so that the transmission shaft 130 has less vibration when rotating, butter is applied to the contact part between the transmission shaft 130 and the linear bearing 120. Further, the carrier plate 140 is fixedly installed on the top of the transmission shaft 130 by bolts. In this way, the motor to be tested is fixedly installed on the carrier plate 140, and when the motor is started for testing, the motor will apply torque and lifting force (pulling force) to the transmission shaft 130. In order to accurately test the torque and tension generated by the motor, a tension test assembly 200 and a torque test assembly 300 are installed in the sleeve 110 .

[0035] like Figures 1 to 5As shown, the tension test assembly 200 includes a tension sensor 210, a transmission block 220, a screw sleeve 230 and a plane bearing 240. The tension sensor 210 is arranged in the sleeve 110, and the tension sensor 210 is located below the linear bearing 120, and the transmission shaft 130 passes through the tension sensor 210, the transmission block 220 is arranged on the test end of the tension sensor 210, the screw sleeve 230 is arranged on the transmission shaft 130, and the plane bearing 240 is arranged on a side surface of the screw sleeve 230 close to the transmission block 220, and the transmission shaft 130 is used to drive the plane bearing 240 to abut or move away from the transmission block 220.

[0036] It should be noted that the tension sensor 210 is installed in the sleeve 110, wherein the tension sensor 210 is located below the linear bearing 120, and the transmission shaft 130 passes through the middle of the tension sensor 210. In the natural state (when the motor is not started for testing), the transmission shaft 130 and the test end of the tension sensor 210 are in a non-contact state. The transmission block 220 is installed on the test end of the tension sensor 210, and the transmission block 220 is distributed downward. The screw sleeve 230 is installed on the transmission shaft 130, and the plane bearing 240 is installed on the side of the screw sleeve 230 close to the transmission block 220, and the plane bearing 240 and the transmission block 220 are in a non-contact state. In this way, when the motor on the carrier plate 140 is started, the motor applies torque and tension to the transmission shaft 130, and the transmission shaft 130 rises under the action of the tension, so that the plane bearing 240 rises and abuts on the transmission block 220. Since the plane bearing 240 and the transmission block 220 are in rolling contact, the plane bearing 240 only transmits the tension to the transmission block 220 , which is then detected by the tension sensor 210 , so that the tension sensor 210 can accurately measure the tension of the transmission shaft 130 .

[0037] like Figures 1 to 5 As shown, the torque test assembly 300 includes a torque sensor 310, a transmission pin 320 and two unloading bearings 330. The torque sensor 310 is arranged in the sleeve 110, and the torque sensor 310 is located below the transmission shaft 130. The transmission pin 320 is radially arranged on one end of the transmission shaft 130 close to the torque sensor 310. The two unloading bearings 330 are rotatably arranged at both ends of the transmission pin 320, and the two unloading bearings 330 are both located in the test end of the torque sensor 310. The transmission shaft 130 is used to drive the unloading bearings 330 to contact or move away from the torque sensor 310.

[0038] It should be noted that the torque sensor 310 is installed in the sleeve 110, and the torque sensor 310 is located below the transmission shaft 130, and the test end of the torque sensor 310 is coaxially arranged with the transmission shaft 130. Further, the transmission pin 320 is installed in the transmission shaft 130 along the radial direction of the transmission shaft 130, and the two ends of the transmission pin 320 extend from the opposite sides of the transmission shaft 130. Further, two unloading bearings 330 are respectively installed at the two ends of the transmission pin 320, and the two unloading bearings 330 are both located in the test end of the torque sensor 310. It should be noted that in the natural state, the two unloading bearings 330 and the test end of the torque sensor 310 are also in a non-contact state. When the motor starts the test, the motor transmits the torque to the transmission shaft 130 to make it rotate, and the transmission shaft 130 drives the transmission pin 320 to rotate, and finally the unloading bearings 330 at both ends of the transmission pin 320 rotate and push the test end of the torque sensor 310. In this way, by fixing a linear bearing 120 of sufficient length in the sleeve 110, and then fittingly passing the transmission shaft 130 through the linear bearing 120, only the linear bearing 120 is used to support the transmission shaft 130, reducing the use of transmission parts, and effectively resisting the vibration generated by the motor when testing a large-load motor. When the motor is tested, the transmission shaft 130 will rotate due to the torque of the motor, and at the same time rise due to the tension. For the tension sensor 210, under the action of the plane bearing 240, the torque of the transmission shaft 130 will not be transmitted to the transmission block 220, so that the tension sensor 210 only detects the tension of the transmission shaft 130. For the torque sensor 310, under the action of the unloading bearings 330 at both ends of the transmission pin 320, the tension is avoided from acting on the torque sensor 310, so that the torque sensor 310 only detects the torque of the transmission shaft 130, thereby improving the test accuracy of the motor torque and tension, and avoiding the mutual interference between the torque and tension during the test process.

[0039] In one embodiment, the side surface of the transmission block 220 close to the plane bearing 240 is a smooth structure. In this way, the friction force when the plane bearing 240 and the transmission block 220 contact and roll can be effectively reduced, thereby further reducing the influence of the torque on the tension sensor 210.

[0040] like Figure 4 As shown, in one embodiment, the plane bearing 240 includes a plane washer 241 and a plurality of balls 242 . The plane washer 241 is disposed on a side surface of the screw sleeve 230 close to the transmission block 220 , and each ball 242 is rotatably disposed on the plane washer 241 .

[0041] It should be noted that a groove is formed on the plane washer 241, so that each ball 242 can roll along the groove. When the transmission shaft 130 rises, the plane washer 241 drives each ball 242 to abut against the smooth surface of the transmission block 220. In this way, when the transmission shaft 130 rotates, the ball 242 is in rolling connection with the transmission block 220 and the plane washer 241, which effectively reduces the transmission of friction.

[0042] like Figure 4 As shown, in one embodiment, an annular groove 231 is formed on one side of the screw sleeve 230 close to the transmission block 220 , and each ball bearing 242 is located in the annular groove 231 .

[0043] In this way, by opening the annular groove 231 on the screw sleeve 230, part of the structure of the transmission block 220 is located in the annular groove 231 even in the natural state, thereby preventing the balls 242 from falling out of the screw sleeve 230 and making the transmission block 220 and the plane bearing 240 in a non-contact state in the natural state.

[0044] In one embodiment, the screw sleeve 230 is provided with an internal thread, and the outer wall of the transmission shaft 130 is provided with an external thread, and the internal thread and the external thread are screwed together. In this way, the screw sleeve 230 is screwed and fixed on the transmission shaft 130, so that the screw sleeve 230 limits the plane bearing 240 between the screw sleeve 230 and the transmission block 220.

[0045] like Figure 4 As shown, in one embodiment, the tension test assembly 200 further includes a sleeve 250 , which is disposed on the transmission shaft 130 , and the sleeve 250 abuts against the threaded sleeve 230 .

[0046] It should be noted that in order to improve the firmness of the screw sleeve 230 and prevent it from loosening from the transmission shaft 130, a sleeve 250 is provided to reinforce the screw sleeve 230. Specifically, the sleeve 250 is sleeved on the outer wall of the transmission shaft 130, and the sleeve 250 abuts against the screw sleeve 230, and then is screwed to one side of the sleeve 250 using a machine screw, and the machine screw is fixed to the transmission shaft 130.

[0047] like Figure 3 and Figure 5 As shown, in one embodiment, the torque testing assembly 300 also includes a positioning pin 340, which is radially arranged on the transmission shaft 130. The transmission shaft 130 is used to drive the positioning pin 340 and the transmission pin 320 to rotate synchronously. When the unloading bearing 330 abuts against the test end of the torque sensor 310, the positioning pin 340 is separated from the sleeve 110. When the positioning pin 340 abuts against the sleeve 110, the transmission pin 320 is separated from the test end of the torque sensor 310.

[0048] Specifically, the transmission shaft 130 contacts the output shaft of the torque sensor 310 through two unloading bearings 330. When the unloading bearings 330 accidentally fall off the transmission pin 320, the transmission pin 320 will directly push the torque sensor 310 and damage it. Therefore, in order to protect the torque sensor 310, the above structure is proposed. Specifically, the positioning pin 340 is inserted and fixed on the transmission shaft 130 along the radial direction, and the two ends of the positioning pin 340 also extend from the opposite sides of the transmission shaft 130, and the axis of the positioning pin 340 is parallel to the axis of the transmission pin 320. When the unloading bearings 330 do not fall off the transmission pin 320, the transmission shaft 130 rotates to drive the transmission pin 320 and the positioning pin 340 to rotate at the same time. When the unloading bearings 330 contact and push the test end of the torque sensor 310, there is still a certain distance between the two ends of the positioning pin 340 and the sleeve 110, and the positioning pin 340 does not contact the sleeve 110. When the unloading bearing 330 falls off from the transmission pin 320, the transmission shaft 130 rotates to drive the transmission pin 320 and the positioning pin 340 to rotate simultaneously. Before the transmission pin 320 contacts the test end of the torque sensor 310, the positioning pin 340 contacts the sleeve 110 first, thereby preventing the transmission shaft 130 from continuing to rotate, that is, preventing the transmission pin 320 from continuing to rotate to contact and push the test end of the torque sensor 310. In this way, the torque sensor 310 is effectively protected.

[0049] like Figure 1 and Figure 6 As shown, in one embodiment, the sleeve 110 includes a fixed seat 111 and a fixed sleeve 112, the linear bearing 120 is disposed in the fixed seat 111, the tension sensor 210 is disposed in the fixed seat 111, the fixed sleeve 112 is disposed at the bottom of the fixed seat 111, and the torque sensor 310 is disposed in the fixed sleeve 112.

[0050] In this way, the linear bearing 120 is installed in the fixed seat 111, and then the transmission shaft 130 is installed in the linear bearing 120, and then the tension sensor 210 is installed at the bottom of the fixed seat 111, and then the torque sensor 310 is installed in the fixed sleeve 112, and finally the fixed sleeve 112 is fixed to the bottom of the fixed seat 111 by screws.

[0051] like Figure 3 and Figure 6 As shown, in one embodiment, a clearance groove 1111 is opened on the inner side wall of the fixing seat 111 , and the end of the positioning pin 340 is located in the clearance groove 1111 .

[0052] It should be noted that there are two escape grooves 1111, which are located on opposite sides of the inner wall of the fixing seat 111, so that the ends of the two positioning pins 340 are respectively located in the two escape grooves 1111. In this way, when the unloading bearing 330 falls off due to accident, the positioning pin 340 rotates to contact the inner wall of the escape groove 1111, so that the transmission shaft 130 cannot continue to rotate, thereby making the transmission pin 320 unable to continue to rotate to contact the test end of the torque sensor 310.

[0053] like Figure 2 As shown, in one embodiment, the tension testing assembly 200 further includes a silicone sheet 260 . The silicone sheet 260 is sleeved on the transmission shaft 130 . The silicone sheet 260 is used to abut against the tension sensor 210 .

[0054] It should be noted that, when the motor completes the test, the transmission shaft 130 will fall back, so that the transmission shaft 130 contacts the outer shell of the tension sensor 210. In order to avoid hard contact between the transmission shaft 130 and the outer shell of the tension sensor 210, a silicone sheet 260 is mounted at the step position where the transmission shaft 130 contacts the outer shell of the tension sensor 210, so that the silicone sheet 260 contacts the outer shell of the tension sensor 210. In one embodiment, the silicone sheet 260 is glued to the transmission shaft 130 by glue to prevent the silicone sheet 260 from falling off.

[0055] like Figure 4 As shown, in one embodiment, the tension test assembly 200 further includes an O-ring 270, which is sleeved on the transmission shaft 130, and the O-ring 270 abuts against the screw sleeve 230. In this way, the O-ring 270 is used to eliminate the gap between the screw sleeve 230 and the transmission shaft 130, so as to prevent the lubricating oil on the plane bearing 240 from flowing down from the gap of the screw sleeve 230.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A tension and torque anti-interference testing device, characterized in that: include: A support assembly, the support assembly comprising a sleeve, a linear bearing, a transmission shaft and a carrier plate, the linear bearing being arranged in the sleeve, the transmission shaft being passed through the linear bearing, and the carrier plate being arranged on the top of the linear bearing; A tension test assembly, the tension test assembly comprising a tension sensor, a transmission block, a screw sleeve and a plane bearing, the tension sensor being arranged in the sleeve, the tension sensor being located below the linear bearing, and the transmission shaft passing through the tension sensor, the transmission block being arranged on the test end of the tension sensor, the screw sleeve being arranged on the transmission shaft, the plane bearing being arranged on a side surface of the screw sleeve close to the transmission block, and the transmission shaft being used to drive the plane bearing to abut against or away from the transmission block; and A torque testing assembly, the torque testing assembly includes a torque sensor, a transmission pin and two unloading bearings, the torque sensor is arranged in the sleeve, and the torque sensor is located below the transmission shaft, the transmission pin is radially arranged on one end of the transmission shaft close to the torque sensor, the two unloading bearings are rotatably arranged at both ends of the transmission pin, and the two unloading bearings are both located in the test end of the torque sensor, and the transmission shaft is used to drive the unloading bearings to contact or move away from the torque sensor.

2. The tension and torque anti-interference testing device according to claim 1, characterized in that: A side surface of the transmission block close to the plane bearing is a smooth structure.

3. The tension and torque anti-interference testing device according to claim 2, characterized in that: The plane bearing comprises a plane washer and a plurality of balls. The plane washer is arranged on a side surface of the screw sleeve close to the transmission block, and each of the balls is rotatably arranged on the plane washer.

4. The tension and torque anti-interference testing device according to claim 3, characterized in that: An annular groove is provided on one side of the screw sleeve close to the transmission block, and each of the balls is located in the annular groove.

5. The tension and torque anti-interference testing device according to claim 4, characterized in that: The screw sleeve is provided with an internal thread, and the outer side wall of the transmission shaft is provided with an external thread, and the internal thread is screwed with the external thread.

6. The tension and torsion anti-interference testing device according to claim 5, characterized in that: The tensile testing assembly also includes a shaft sleeve, which is arranged on the transmission shaft and abuts against the threaded sleeve.

7. The tension and torsion anti-interference testing device according to claim 1, characterized in that: The torque testing assembly also includes a locating pin, which is radially arranged on the transmission shaft. The transmission shaft is used to drive the locating pin and the transmission pin to rotate synchronously. When the unloading bearing abuts against the test end of the torque sensor, the locating pin is separated from the sleeve. When the locating pin abuts against the sleeve, the transmission pin is separated from the test end of the torque sensor.

8. The tension and torsion anti-interference testing device according to claim 7, characterized in that: The sleeve seat includes a fixed seat and a fixed sleeve, the linear bearing is arranged in the fixed seat, the tension sensor is arranged in the fixed seat, the fixed sleeve is arranged at the bottom of the fixed seat, and the torque sensor is arranged in the fixed sleeve.

9. The tension and torsion anti-interference testing device according to claim 8, characterized in that: An air avoidance groove is provided on the inner side wall of the fixing seat, and the end of the positioning pin is located in the air avoidance groove.

10. The tension and torque anti-interference testing device according to claim 1, characterized in that: The tension test assembly further comprises a silicone sheet, which is sleeved on the transmission shaft and is used to abut against the tension sensor.

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