Multi-angle torsion pressing cable torsion resistance performance testing device

Abstract

The present application belongs to the technical field of cable torsion resistance performance test, and relates to a multi-angle torsion pressure cable torsion resistance mechanical property test device. The device comprises a frame, the frame is provided with a first support seat and a first three-jaw chuck, the first support seat is slidably connected with a second three-jaw chuck, the frame is provided with linear array distributed torque detection components, the torque detection components comprise a second support seat, the second support seat is slidably connected with a rotating frame, the rotating frame is provided with telescopic cylinders, and the telescopic parts of all the telescopic cylinders on the rotating frame are fixedly connected with a clutch disc. The present application detects the cable in different regions, stops the further torsion when the cable region close to the first three-jaw chuck reaches the set torque value, and further transmits the power to the adjacent region of the cable until the whole cable is twisted to the set torque value, so as to realize the uniform stress of each region of the cable and ensure the accuracy of the torsion resistance test.

Description

Technical Field

[0001] This invention relates to the field of cable torsional performance testing technology, and in particular to a cable torsional mechanical performance testing device that applies multi-angle torsional pressure. Background Technology

[0002] In traditional cable torsion tests, a section of cable is cut from the bundle, and two clamps hold both ends of the cut cable. The cable is then connected to a circuit, and a set torque is applied from one clamp to torsion it. The cable section is judged to be qualified by detecting whether the circuit is in a normal state of continuity. However, during the torsion process, the cable may experience torque attenuation due to structural loosening and friction (the part near the drive end twists more severely, while the far end lags). Furthermore, there is no constraint and guidance mechanism along the circumference of the cable during this process. If the cable itself is not completely uniform due to manufacturing reasons, and there are uneven textures, the torque will be concentrated in the weak areas of the cable, further aggravating the uneven torque distribution and affecting the overall judgment of the cable. Summary of the Invention

[0003] To overcome the shortcomings mentioned in the background art, the present invention provides a cable torsional mechanical performance testing device for multi-angle torsional pressure application.

[0004] Technical Solution: A cable torsional mechanical performance testing device for multi-angle torsional pressure application includes a frame, the frame being provided with a first support base and a first three-jaw chuck, the first support base being slidably connected to a second three-jaw chuck, and a return spring being fixed between the two, the frame being provided with a linear array of torque detection components, the torque detection components including two symmetrically distributed second support bases, each of the two second support bases being slidably connected to a rotating frame, each of the two rotating frames being equipped with a plurality of telescopic cylinders, the telescopic parts of all the telescopic cylinders on one rotating frame being slidably connected to the other rotating frame and jointly fixed to a clutch disc, the rotating frame being used to limit the corresponding clutch disc, adjacent clutch discs in two adjacent torque detection components being used to limit each other, the clamping side of the first three-jaw chuck having circumferentially uniformly distributed slots, all the slots on the first three-jaw chuck being used to limit the corresponding clutch disc, and the two rotating frames being jointly provided with a centering component for centrally supporting the cable.

[0005] To further explain, the centering component includes two sets of transmission racks, each set containing several racks. The two sets of transmission racks are slidably connected to the corresponding rotating frame. Each transmission rack is equipped with a detection roller and a torque sensor. The transmission rack is used to control the radial sliding of the detection roller, and the torque sensor on the transmission rack is used to detect the torque of the corresponding detection roller.

[0006] To further explain, the clutch disc is provided with a limiting groove on its lower side, and the second support seat is used to limit the clutch disc through the corresponding limiting groove.

[0007] Further explanation: A drive motor is mounted on the frame, and a drive shaft is provided on the output shaft of the drive motor. A third support base, the same number as the torque detection components, is fixedly connected to the frame. A pulley, slidably connected to the drive shaft, is rotatably connected to the third support base. An internal gear ring is rotatably connected between two rotating frames within the same torque detection component. The pulley and the corresponding internal gear ring are driven by a belt. A first transmission gear, the same number as the transmission racks on both, is rotatably connected between two rotating frames within the same torque detection component via a connecting rod. The first transmission gear meshes with the corresponding internal gear ring and is driven by the corresponding transmission rack.

[0008] To further explain, there is rotational damping between the internal gear ring and the two corresponding rotating frames, which is used to limit the transmission rack from driving the internal gear ring in the opposite direction.

[0009] To further explain, the transmission rack is slidably connected to an elastic telescopic rod, and an anti-jamming roller is rotatably connected to the side of the elastic telescopic rod away from the corresponding detection roller. The elastic telescopic rod is rotatably connected to the corresponding detection roller.

[0010] To further explain, each of the frame near the third support is slidably connected to two limiting members. The limiting members are used to guide the movement of the corresponding anti-jamming rollers. The second support is rotatably connected to a second transmission gear. The second transmission gear is used to control the centering and sliding of the corresponding two limiting members. All the second transmission gears are slidably connected to the drive shaft.

[0011] To further explain, the output shaft of the drive motor is slidably connected to the drive shaft, and an annular pull handle is rotatably connected to the end of the drive shaft away from the drive motor. The drive shaft is slidably and rotatably connected to the first support seat. The annular pull handle is used to pull the drive shaft to move away from the drive motor, so as to release the transmission control of the pulley and the second transmission gear.

[0012] To further explain, the number of transmission racks is odd, and the transmission racks on two adjacent rotating frames are staggered. The detection rollers are controlled by two opposing transmission racks to generate shearing force on the cable.

[0013] To further explain, the upper end of the limiting member is higher than the center of the clutch disc, which is used to simultaneously limit the shearing force generated by the opposite transmission rack on the cable.

[0014] The beneficial effects of this invention are as follows: By performing regional testing on the cable, when the cable area near the first three-jaw chuck reaches the set torque value, the twisting stops, and the power is further transmitted to the adjacent areas of the cable until the entire cable is twisted to the set torque value, so as to achieve uniform force on each area of ​​the cable, ensuring the accuracy of the torsion test and the representativeness of the tested cable; through the cooperation of the elastic telescopic rod, the anti-jamming roller and the limiting component, during the cable twisting process, the two opposing elastic telescopic rods move radially inward, applying shear force to the cable that has reached the set torque at multiple angles, and under the combined working conditions of torsion and shear, the true performance of the cable is detected. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first three-jaw chuck and the second three-jaw chuck of the present invention; Figure 3 This is a three-dimensional structural diagram of the rotating frame and clutch disc of the present invention; Figure 4 This is an exploded view of the rotating frame and clutch disc of the present invention; Figure 5 This is a three-dimensional structural diagram of the drive shaft, pulley, and internal gear ring of the present invention; Figure 6 This is a three-dimensional structural cross-sectional view of the transmission rack and elastic telescopic rod of the present invention; Figure 7 This is a three-dimensional structural cross-sectional view of the annular pull handle of the present invention.

[0016] In the diagram: 1: Frame, 101: First support base, 2: First three-jaw chuck, 201: Second three-jaw chuck, 202: Return spring, 3: Second support base, 4: Rotating frame, 5: Telescopic cylinder, 6: Clutch disc, 601: Limiting groove, 7: Transmission rack, 8: Detection roller, 9: Drive motor, 10: Drive shaft, 1001: Third support base, 11: Pulley, 12: Internal gear ring, 1201: First transmission gear, 13: Elastic telescopic rod, 14: Anti-jamming roller, 15: Limiting component, 16: Second transmission gear, 17: Ring-shaped pull handle. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0018] Example 1

[0019] A multi-angle torsional compression testing device for cable torsional mechanical properties, such as Figures 1-4 As shown, the device includes a frame 1, which is provided with a first support base 101 and a first three-jaw chuck 2. The first support base 101 is slidably connected to a second three-jaw chuck 201, and a return spring 202 is fixed between them. The frame 1 is provided with torque detection components arranged in a linear array. The torque detection components include two second support bases 3 symmetrically distributed and installed on the frame 1. The two second support bases 3 are slidably connected to rotating frames 4. The two rotating frames 4 are each equipped with several telescopic cylinders 5. The telescopic parts of all the telescopic cylinders 5 on one rotating frame 4 are slidably connected to the other rotating frame 4 and are fixed together with a clutch disc 6. The rotating frame 4 is used to limit the corresponding clutch disc 6. The two adjacent clutch discs 6 in the two adjacent torque detection components are used to limit each other. The clamping side of the first three-jaw chuck 2 is provided with circumferentially evenly distributed slots. All the slots on the first three-jaw chuck 2 are used to limit the corresponding clutch disc 6. The two rotating frames 4 are jointly provided with a centering component for centering the cable.

[0020] In the above scheme, the following descriptions all refer to a torque detection component. When the first three-jaw chuck 2 and the second three-jaw chuck 201 stably clamp the cable, the upper part of the two second support seats 3 is provided with arc-shaped grooves, so that the rotating frame 4 slides circumferentially along the arc-shaped grooves of the corresponding second support seats 3. The rotating frame 4 is provided with a circular groove for limiting the clutch plate 6 on the side close to the corresponding clutch plate 6. Taking the figure as an example, the rotating frame 4 is provided with two telescopic cylinders 5 and is centrally symmetrically distributed. The clutch plate 6 is provided with circumferentially evenly distributed protrusions on the side away from the telescopic part of the corresponding telescopic cylinder 5. The number of protrusions on the clutch plate 6 is the same as the number of slots on the first three-jaw chuck 2.

[0021] like Figures 1-6 As shown, the centering component includes two sets of transmission racks 7, each set of transmission racks 7 having several components. The two sets of transmission racks 7 are slidably connected to the corresponding rotating frame 4. The transmission racks 7 are equipped with detection rollers 8 and torque sensors. The transmission racks 7 are used to control the radial sliding of the detection rollers 8, and the torque sensors on the transmission racks 7 are used to detect the torque of the corresponding detection rollers 8.

[0022] In the above scheme, taking the figure as an example, the rotating frame 4 has three transmission racks 7 evenly distributed in the circumferential direction, and the detection rollers 8 and torque sensors are on the side of the corresponding transmission racks 7 close to the cable. The three transmission racks 7 slide radially along the corresponding rotating frame 4, and the cable is supported in the center by the three detection rollers 8. When supported in the center, the detection rollers 8 are in contact with the surface of the cable and have friction, so they can rotate with the cable when the cable is twisted, thereby detecting the torque borne by the cable.

[0023] like Figure 3 and Figure 4 As shown, a limit groove 601 is provided on the lower side of the clutch disc 6, and the second support seat 3 is used to limit the corresponding clutch disc 6 through the corresponding limit groove 601.

[0024] In the above scheme, when the two clutch discs 6 in the same torque detection component are respectively in the circular grooves of the corresponding rotating frame 4, the limiting groove 601 is limited by the second support seat 3, so that the two rotating frames 4 cannot slide circumferentially relative to the second support seat 3.

[0025] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a drive motor 9 is mounted on the frame 1, and a drive shaft 10 is provided on the output shaft of the drive motor 9. A third support base 1001, the same number as the torque detection components, is fixedly connected to the frame 1. The third support base 1001 is rotatably connected to a pulley 11 that is slidably connected to the drive shaft 10. An internal gear ring 12 is rotatably connected between two rotating frames 4 in the same torque detection component. The pulley 11 and the corresponding internal gear ring 12 are driven by a belt. A first transmission gear 1201, the same number as the transmission rack 7 on both, is rotatably connected between two rotating frames 4 in the same torque detection component through a connecting rod. The first transmission gear 1201 meshes with the corresponding internal gear ring 12 and is connected to the corresponding transmission rack 7.

[0026] In the above scheme, the drive motor 9 and the drive shaft 10 are considered to be fixedly connected. The drive shaft 10 is provided with three splines. The pulley 11 is provided with circumferentially distributed spline grooves. The drive shaft 10 drives the pulley 11 to rotate coaxially through the splines. The internal gear ring 12 is located directly above the corresponding pulley 11. In the same torque detection component, there are three circumferentially evenly distributed transmission racks 7 on each of the left and right sides of the internal gear ring 12. The internal gear ring 12 meshes with six first transmission gears 1201. The side of the six first transmission gears 1201 away from the internal gear ring 12 meshes with the corresponding transmission racks 7, thereby driving the radial movement of all transmission racks 7.

[0027] like Figure 4As shown, the internal gear ring 12 has rotational damping between itself and the two corresponding rotating frames 4, which is used to limit the transmission rack 7 from driving the internal gear ring 12 in the opposite direction.

[0028] In the above scheme, when the internal gear ring 12 rotates relative to the two corresponding rotating frames 4, a damping force will be generated. When the driving force is provided by the drive motor 9, the transmission rack 7 can move radially. When the transmission rack 7 has a tendency to move in the opposite direction due to the reaction force of the cable, the damping between the internal gear ring 12 and the two corresponding rotating frames 4 generates a damping force to limit the transmission rack 7.

[0029] Working principle: When a torsional mechanical performance test is required on the cable, the cable is inserted from the left side of the second three-jaw chuck 201, passing through all the rotating frames 4 and all the gear rings 12, until the right end of the cable contacts the first three-jaw chuck 2. At this time, the first three-jaw chuck 2 and the second three-jaw chuck 201 are twisted to clamp the cable. After clamping, the cable is energized, and the drive motor 9 is started. The drive motor 9 drives the drive shaft 10 to rotate synchronously. All the pulleys 11 on the drive shaft 10 rotate synchronously. The pulleys 11 rotate relative to the corresponding gear rings 12 through the belt drive relative to the corresponding two rotating frames 4. When the gear rings 12 rotate, they drive the first transmission gear 1201 corresponding to the gear rings 12 to rotate around the connecting rod between the corresponding two rotating frames 4. All the first transmission gears 1201 drive the corresponding transmission racks 7 to slide radially inward until all the test rollers 8 are in contact with the cable and support the cable. The drive motor 9 is then turned off. At this time, the first three-jaw chuck 2 is started to twist the cable. During this process, the second three-jaw chuck 201 slides to the left, and the return spring 202 is compressed and stored.

[0030] During cable torsion, all detection rollers 8 rotate synchronously under friction, and the torque on the detection rollers 8 is measured by a torque sensor to detect the torque borne by the cable in real time. The cable torque is gradually transmitted from the side of the first three-jaw chuck 2 to the side of the second three-jaw chuck 201. The part of the cable corresponding to the rightmost torque detection component will reach the set torque first. When the torque borne by the right side of the cable reaches the set value, the telescopic cylinder 5 at the corresponding position is activated, pushing out the corresponding clutch disc 6 until the telescopic part inside the telescopic cylinder 5 extends to its limit. The two clutch discs 6 of the rightmost torque detection component are pushed out and separated from the corresponding second support seat 3 respectively. The two rightmost clutch discs 6 release the limit on the corresponding rotating frame 4 respectively. The circumferentially evenly distributed protrusions of the right clutch disc 6 cooperate with the circumferentially evenly distributed slots on the left side of the first three-jaw chuck 2. The left clutch disc 6 also extends to its limit. The first three-jaw chuck 2 drives the rotating frame of the rightmost torque detection component through the telescopic part of the right clutch disc 6 and the telescopic part of the left telescopic cylinder 5. 4. Coaxial rotation: At this time, the cable torque in the rightmost torque detection component no longer increases. The cable in the rightmost torque detection component rotates together with the first three-jaw chuck 2 until the cable torque corresponding to the middle torque detection component reaches the set value. The telescopic cylinder 5 at the corresponding position of the middle torque detection component is activated, pushing out the corresponding clutch disc 6. The protrusion of the clutch disc 6 on the right side of the middle torque detection component cooperates with the protrusion of the clutch disc 6 on the left side of the rightmost torque detection component, driving the rotating frame 4 corresponding to the middle torque detection component to rotate. The cable torque in the middle torque detection component no longer increases until the cable torque in the leftmost torque detection component reaches the set value, so that the torque is evenly distributed when the cable undergoes torsional deformation. The first three-jaw chuck 2 is closed, and the cable anti-torsion test is completed. During this process, observe in real time whether the current in the cable flows normally. If the current decreases or the power is cut off at a certain moment, it means that the corresponding position of the cable cannot work normally under the set torque, that is, the quality is unqualified. If the current is stable, the cable is qualified.

[0031] After the cable torsion test is completed, start the drive motor 9 and rotate the drive shaft 10, pulley 11 and first transmission gear 1201 in the reverse direction until the transmission rack 7 is reset. Open the first three-jaw chuck 2 and the second three-jaw chuck 201. The second three-jaw chuck 201 is reset under the action of the reset spring 202. Take out the cable. The cable torsion mechanical performance test is completed. When the cable torsion mechanical performance test needs to be performed again, repeat the above operation.

[0032] Example 2

[0033] Based on Example 1, such as Figure 5 and Figure 6As shown, the transmission rack 7 is slidably connected to an elastic telescopic rod 13, and an anti-jamming roller 14 is rotatably connected to the side of the elastic telescopic rod 13 away from the corresponding detection roller 8. The elastic telescopic rod 13 is rotatably connected to the corresponding detection roller 8.

[0034] In the above scheme, a circular through groove is provided in the transmission rack 7 for the corresponding elastic telescopic rod 13 to slide. The torque sensor is installed on the side of the corresponding elastic telescopic rod 13 near the corresponding detection roller 8. The elastic telescopic rod 13 can slide relative to the corresponding transmission rack 7, thereby increasing the pressure of the corresponding detection roller 8 on the cable.

[0035] like Figures 3-5 As shown, two limiting members 15 are slidably connected to the frame 1 near the third support base 1001. The limiting members 15 are used to guide the movement of the corresponding anti-jamming rollers 14. The second support base 3 is rotatably connected to a second transmission gear 16. The second transmission gear 16 is used to control the centering sliding of the corresponding two limiting members 15. All the second transmission gears 16 are slidably connected to the drive shaft 10.

[0036] In the above scheme, the two corresponding limiting members 15 are arranged symmetrically. Both limiting members 15 are provided with arc-shaped guide rails. Both limiting members 15 have racks on opposite sides. The second transmission gear 16 meshes with the racks of the corresponding two limiting members 15. The centering movement of the two limiting members 15 is controlled by the second transmission gear 16. All the second transmission gears 16 have frictional damping with the drive shaft 10, so that the second transmission gears 16 and the drive shaft 10 can slide relative to each other and can still transmit torque normally after relative stability.

[0037] like Figure 2 , Figure 5 and Figure 7 As shown, the output shaft of the drive motor 9 is slidably connected to the drive shaft 10. The end of the drive shaft 10 away from the drive motor 9 is rotatably connected to an annular pull handle 17. The drive shaft 10 is slidably and rotatably connected to the first support seat 101. The annular pull handle 17 is used to pull the drive shaft 10 to move away from the drive motor 9, so as to release the transmission control of the pulley 11 and the second transmission gear 16.

[0038] In the above scheme, when the annular handle 17 pulls the drive shaft 10 to move away from the drive motor 9, the drive shaft 10 will not completely disengage from the output shaft of the drive motor 9, and the spline of the drive shaft 10 will separate from the corresponding pulley 11. After separation, all pulleys 11 can rotate freely, and the annular handle 17 is slidably connected to the first support seat 101.

[0039] like Figure 4 and Figure 5As shown, there is an odd number of transmission racks 7, and the transmission racks 7 on two adjacent rotating frames 4 are staggered. The detection rollers 8 are controlled by two opposing transmission racks 7 to generate shearing force on the cable.

[0040] In the above scheme, taking the figure as an example, each rotating frame 4 has three transmission racks 7 evenly distributed circumferentially. The inner gear ring 12 is located between the transmission racks 7 on two adjacent rotating frames 4. The projections of the transmission racks 7 on two adjacent rotating frames 4 from top to bottom do not overlap. When the transmission racks 7 on two adjacent rotating frames 4 move towards the cable side, the two opposing transmission racks 7 on the two adjacent rotating frames 4 generate shearing force on the cable.

[0041] like Figure 3 and Figure 5 As shown, the upper end of the limiting member 15 is higher than the center of the clutch disc 6, which is used to simultaneously limit the shearing force generated by the opposite transmission rack 7 on the cable.

[0042] In the above scheme, the cable shaft coincides with the center of the clutch disc 6. Under the guidance of the corresponding limiting member 15, the anti-jamming roller 14 pushes the corresponding elastic telescopic rod 13 on the corresponding transmission rack 7 to move radially. When the limiting member 15 does not release the guidance of the corresponding anti-jamming roller 14, the elastic telescopic rod 13 on the opposite side moves radially under the guidance of the corresponding anti-jamming roller 14, applying shearing force to the cable.

[0043] Working principle: When the drive motor 9 is started, causing the corresponding transmission rack 7 to move radially inward, the drive motor 9 drives the drive shaft 10 to rotate. All the second transmission gears 16 on the drive shaft 10 rotate, and the second transmission gears 16 drive the corresponding two limit members 15 to move in center. When all the detection rollers 8 are in contact with the cable, the drive motor 9 is turned off. At this time, all the limit members 15 have completed their centering movement until the centers of the arc guide rails on the two opposite limit members 15 are concentric and located on the cable axis. Pull the ring handle 17 to the left, causing the drive shaft 10 to move to the left until the transmission control of all pulleys 11 is released. During the rotation of the two rotating frames 4 of the torque detection component, the transmission racks 7 corresponding to the two rotating frames 4 rotate coaxially. The transmission racks 7 drive the corresponding anti-jamming rollers 14 to rotate synchronously. When the anti-jamming rollers 14 rotate to contact the corresponding limit members 15, the limit members 15 guide the corresponding anti-jamming rollers 14 into the arc guide rails. The anti-jamming rollers 14 move radially, synchronously driving the corresponding elastic extension and contraction. The rod 13 moves radially, further increasing the pressure of the detection roller 8 on the cable. When one of the anti-jamming rollers 14 and its opposite anti-jamming roller 14 rotate to the horizontal, a shearing force is applied to the cable, simulating a more realistic composite working condition. This action is repeated during the rotation of the two rotating frames 4 within the same torque detection component. The corresponding limiting member 15 continues to guide the radial movement of the corresponding anti-jamming roller 14 and elastic telescopic rod 13, repeatedly applying a shearing force to the cable to simulate a more realistic composite working condition and detect the true performance of the cable. This continues until the cable corresponding to the leftmost torque detection component is tested. The first three-jaw chuck 2 is closed, and the annular pull handle 17 is pushed to the right until the drive shaft 10 is reset. The drive motor 9 is started until all elastic telescopic rods 13, anti-jamming rollers 14, and limiting members 15 are reset. The drive motor 9 is then closed, and the first three-jaw chuck 2 and the second three-jaw chuck 201 are opened. The cable is then removed, and the cable torsional mechanical performance test is completed. When the cable torsional mechanical performance test needs to be performed again, the above operation can be repeated.

[0044] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be within the protection scope of the present invention.

Claims

1. A cable torsional mechanical performance testing device under multi-angle torsional pressure, comprising a frame (1), wherein the frame (1) is provided with a first support base (101) and a first three-jaw chuck (2), the first support base (101) is slidably connected to a second three-jaw chuck (201), and a return spring (202) is fixedly connected between the two, characterized in that, The frame (1) is provided with torque detection components arranged in a linear array. The torque detection components include two second support seats (3) that are symmetrically distributed and installed on the frame (1). The two second support seats (3) are slidably connected to a rotating frame (4). The two rotating frames (4) are each equipped with a number of telescopic cylinders (5). The telescopic parts of all the telescopic cylinders (5) on one of the rotating frames (4) are slidably connected to the other rotating frame (4) and are jointly fixed to a clutch disc (6). The rotating frame (4) is used to limit the corresponding clutch disc (6). The two adjacent clutch discs (6) in the two adjacent torque detection components are used to limit each other. The clamping side of the first three-jaw chuck (2) is provided with circumferentially evenly distributed slots. All the slots on the first three-jaw chuck (2) are used to limit the corresponding clutch disc (6). The two rotating frames (4) are jointly provided with a centering component for centering the cable.

2. The cable torsional mechanical property testing device under multi-angle torsional compression as described in claim 1, characterized in that, The centering component includes two sets of transmission racks (7), each set of transmission racks (7) having several components. The two sets of transmission racks (7) are slidably connected to the corresponding rotating frame (4). Each transmission rack (7) is equipped with a detection roller (8) and a torque sensor. The transmission rack (7) is used to control the radial sliding of the detection roller (8), and the torque sensor on the transmission rack (7) is used to detect the torque of the corresponding detection roller (8).

3. The cable torsional mechanical property testing device under multi-angle torsional compression as described in claim 1, characterized in that, The clutch disc (6) is provided with a limiting groove (601) on its lower side, and the second support seat (3) is used to limit the corresponding clutch disc (6) through the corresponding limiting groove (601).

4. The cable torsional mechanical property testing device under multi-angle torsional compression as described in claim 2, characterized in that, A drive motor (9) is mounted on the frame (1). The output shaft of the drive motor (9) is provided with a drive shaft (10). A third support base (1001) with the same number as the torque detection component is fixed on the frame (1). The third support base (1001) is rotatably connected to a pulley (11) that is slidably connected to the drive shaft (10). An internal gear ring (12) is rotatably connected between two rotating frames (4) in the same torque detection component. The pulley (11) and the corresponding internal gear ring (12) are driven by a belt. A first transmission gear (1201) with the same number as the transmission racks (7) on the two rotating frames (4) in the same torque detection component is rotatably connected by a connecting rod. The first transmission gear (1201) meshes with the corresponding internal gear ring (12) and is connected to the corresponding transmission rack (7).

5. A cable torsional mechanical property testing device for multi-angle torsional compression according to claim 4, characterized in that, The internal gear ring (12) has rotational damping between it and the two corresponding rotating frames (4), which is used to limit the transmission rack (7) from driving the internal gear ring (12) in the opposite direction.

6. The cable torsional mechanical property testing device under multi-angle torsional compression according to claim 4, characterized in that, The transmission rack (7) is slidably connected to an elastic telescopic rod (13), and an anti-jamming roller (14) is rotatably connected to the side of the elastic telescopic rod (13) away from the corresponding detection roller (8). The elastic telescopic rod (13) is rotatably connected to the corresponding detection roller (8).

7. A cable torsional mechanical property testing device for multi-angle torsional compression according to claim 6, characterized in that, Two limiting members (15) are slidably connected to the frame (1) near the third support base (1001). The limiting members (15) are used to guide the movement of the corresponding anti-jamming roller (14). The second support base (3) is rotatably connected to a second transmission gear (16). The second transmission gear (16) is used to control the centering and sliding of the two corresponding limiting members (15). All the second transmission gears (16) are slidably connected to the drive shaft (10).

8. A cable torsional mechanical property testing device for multi-angle torsional compression according to claim 4, characterized in that, The output shaft of the drive motor (9) is slidably connected to the drive shaft (10). A ring-shaped pull handle (17) is rotatably connected to one end of the drive shaft (10) away from the drive motor (9). The drive shaft (10) is slidably and rotatably connected to the first support seat (101). The ring-shaped pull handle (17) is used to pull the drive shaft (10) to move away from the drive motor (9) to release the transmission control of the pulley (11) and the second transmission gear (16).

9. A cable torsional mechanical property testing device for multi-angle torsional compression according to claim 7, characterized in that, The number of transmission racks (7) is odd. The transmission racks (7) on two adjacent rotating frames (4) are staggered. The detection rollers (8) are controlled by two opposing transmission racks (7) to generate shearing force on the cable.

10. A cable torsional mechanical property testing device for multi-angle torsional compression according to claim 9, characterized in that, The upper end of the limiting member (15) is higher than the center of the clutch disc (6) and is used to simultaneously limit the shearing force generated by the opposite transmission rack (7) on the cable.

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