Device for testing bending resistance of cable protection pipe

Abstract

The invention relates to the field of cable protection tube testing, in particular to a cable protection tube anti-bending performance testing device which comprises a testing table, a cable protection tube arranged on the testing table, a bending unit arranged on the testing table and a detection unit arranged on the testing table. The bending unit comprises a clamping assembly arranged on the cable protection pipe, a movable assembly arranged on the clamping assembly, a bending assembly arranged on the movable assembly, and a pressing assembly arranged on the test bench; and the detection unit comprises a gas compressor arranged on the test bench, a sealing assembly arranged on the gas compressor and matched with the cable protection pipe, and an appearance detection assembly arranged on the test bench. According to the invention, the repeated bending working condition of the cable protection pipe in the actual use process can be simulated, and the bending resistance of the cable protection pipe can be comprehensively evaluated; and measuring and calculating the maximum bending angle of the cable protection pipe under the condition that the self state is kept stable.

Description

Technical Field

[0001] The present invention relates to the field of cable protection pipe testing, and particularly to a device for testing the anti-bending performance of a cable protection pipe. Background Art

[0002] When laying cables, cable protection pipes need to be sleeved outside. As an important protection component of the cable, its performance directly affects the service life and safety of the cable. During the cable laying process, it is often necessary to bend the cable protection pipe according to the actual environment to facilitate the smooth laying of the cable.

[0003] However, the current anti-bending test of cable protection pipes usually uses the three-point bending method or the four-point bending method. However, this is likely to cause excessive single-point pressure on the cable protection pipe, resulting in premature deformation and cracking at the stressed part of the cable protection pipe, thus unable to test the ultimate bending angle of the cable protection pipe in a stable state. In this way, during actual operation, personnel are likely to over-bend the cable protection pipe, leading to problems such as damage and cracking. This not only affects the normal operation of the cable but also may cause safety accidents. Summary of the Invention

[0004] In view of the problem in the above or the prior art that there is excessive single-point pressure on the cable protection pipe, resulting in premature deformation and cracking at the stressed part of the cable protection pipe, thus unable to test the ultimate bending angle of the cable protection pipe in a stable state, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a device for testing the anti-bending performance of a cable protection pipe.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: It includes a test bench, a cable protection pipe arranged on the test bench, a bending unit arranged on the test bench, and a detection unit arranged on the test bench; the bending unit includes a clamping component arranged on the cable protection pipe, a movable component arranged on the clamping component, a bending component arranged on the movable component, and a pressing component arranged on the test bench; the detection unit includes a compressor arranged on the test bench, a sealing component arranged on the compressor and cooperating with the cable protection pipe, and an appearance detection component arranged on the test bench.

[0007] As a preferred scheme of the device for testing the anti-bending performance of the cable protection pipe of the present invention, wherein: the clamping component includes a bottom plate arranged on the cable protection pipe, a clamping plate arranged on the bottom plate, a first bidirectional threaded rod arranged on the bottom plate, a sliding rod arranged on the bottom plate, and a pin arranged on the clamping plate.

[0008] As a preferred scheme of the device for testing the anti-bending performance of the cable protection pipe of the present invention, the clamping plate is provided with a first threaded hole cooperating with the first bidirectional threaded rod, a sliding hole cooperating with the sliding rod, and a pin hole cooperating with the pin.

[0009] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: the movable assembly includes a movable block arranged below the bottom plate, a turntable arranged on the movable block and rotatably connected to the bottom plate, and a sliding groove arranged on the movable block.

[0010] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: the bending assembly includes a servo motor arranged on the test bench, a bidirectional threaded rod two arranged on the servo motor, and a connecting block arranged on the bidirectional threaded rod two. A threaded hole two matching the bidirectional threaded rod two is arranged on the connecting block; a slider matching the sliding groove is arranged on the connecting block; a moving groove matching the connecting block is arranged on the test bench.

[0011] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: the pressing assembly includes a support block one arranged on the test bench, a connecting rod arranged on the support block one, and a pressing wheel arranged on the connecting rod.

[0012] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: scale lines for bending the cable protection pipe are arranged on the test bench.

[0013] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: the sealing assembly includes an air delivery pipe arranged on the air compressor, a plug head one arranged on the air delivery pipe, a plug head two arranged at one end of the cable protection pipe and matching the plug head one, a connecting rope arranged on the plug head two, and a fixed block arranged on the test bench and connected to the connecting rope.

[0014] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: one end of the air delivery pipe penetrates through the plug head one to the inside of the cable protection pipe, and an air pressure sensor is arranged on the plug head two.

[0015] As a preferred embodiment of the cable protection pipe anti-bending performance testing device of the present invention, wherein: the appearance detection assembly includes a support block two arranged on the test bench, a robotic arm arranged on the support block two, and a camera arranged on the robotic arm.

[0016] The beneficial effects of the cable protection pipe anti-bending performance testing device of the present invention: The present invention can simulate the repeated bending conditions of the cable protection pipe during actual use, comprehensively evaluate the anti-bending performance of the cable protection pipe, and measure the maximum bending angle of the cable protection pipe while maintaining its own stable state; Through the cooperation of the turntable and the slider, under the action of the pressing wheel, the cable protection pipe is first slightly bent, and then the connecting block is used to drive the bottom plate to move. By applying an inward thrust to both ends of the cable protection pipe, the cable protection pipe is bent, making the stress change more uniform when the cable protection pipe is bent. This solves the problem that the single-point force on the cable protection pipe is too large during the test, resulting in premature deformation and rupture of the cable protection pipe, thereby accurately testing the bending limit of the cable protection pipe and playing a guiding role in personnel construction. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the cable protection pipe anti-bending performance testing device.

[0019] Figure 2 It is a schematic diagram of the front structure of the cable protection pipe anti-bending performance testing device.

[0020] Figure 3 It is a schematic diagram of the side structure of the cable protection pipe anti-bending performance testing device.

[0021] Figure 4 It is a schematic diagram of the top view structure of the cable protection pipe anti-bending performance testing device.

[0022] Figure 5 It is a schematic diagram of the structure of the double-threaded rod two of the cable protection pipe anti-bending performance testing device.

[0023] Figure 6 For the cable protection pipe anti-bending performance testing device Figure 4 The enlarged view of the structure at A.

[0024] Figure 7 It is a schematic diagram of the structure of the clamping plate of the cable protection pipe anti-bending performance testing device.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the connecting block of the cable protection pipe anti-bending performance testing device.

[0026] In the figure: 1. Test bench; 11. Moving groove; 12. Scale line; 2. Cable protection pipe; 3. Bending unit; 31. Clamping assembly; 311. Bottom plate; 312. Clamping plate; 3121. First threaded hole; 3122. Sliding hole; 3123. Pin hole; 313. First bidirectional threaded rod; 314. Slide bar; 315. Pin; 32. Moving assembly; 321. Moving block; 322. Turntable; 323. Sliding groove; 33. Bending assembly; 331. Servo motor; 332. Second bidirectional threaded rod; 333. Connecting block; 3331. Slide block; 3332. Second threaded hole; 34. Pressing assembly; 341. First support block; 342. Connecting rod; 343. Pressing wheel; 4. Detection unit; 41. Compressor; 42. Sealing assembly; 421. Air delivery pipe; 422. First plugging head; 423. Second plugging head; 424. Connecting rope; 425. Fixed block; 43. Appearance detection assembly; 431. Second support block; 432. Robot arm; 433. Camera. Detailed implementation mode

[0027] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation mode of the present invention will be given in conjunction with the drawings of the specification.

[0028] Example 1, refer to Figure 1 - Figure 2 , which is the first embodiment of the present invention. This embodiment provides a device for testing the anti-bending performance of a cable protection pipe, which includes a test bench 1, a tabletop for operation, a cable protection pipe 2 arranged on the test bench 1 for anti-bending test, a bending unit 3 arranged on the test bench 1 for bending the cable protection pipe 2, and a detection unit 4 arranged on the test bench 1 for testing the bent cable protection pipe 2 to test the relevant data of the anti-bending performance of the cable protection pipe 2; The bending unit 3 includes a clamping assembly 31 arranged on the cable protection pipe 2 for fixedly clamping the cable protection pipe 2, a moving assembly 32 arranged on the clamping assembly 31 for moving in cooperation with the bending of the cable protection pipe 2 to prevent damage to the outer wall of the cable protection pipe 2 and avoid affecting the test results of the cable protection pipe 2, a bending assembly 33 arranged on the moving assembly 32 for bending the cable protection pipe 2, and a pressing assembly 34 arranged on the test bench 1 for pressing the cable protection pipe 2 to make the cable protection pipe 2 bend in one direction, so as to facilitate the bending of the cable protection pipe 2 by the bending assembly 33; The detection unit 4 includes a compressor 41 disposed on the test bench 1 for inputting compressed air into the cable protection pipe 2, a sealing assembly 42 disposed on the compressor 41 and cooperating with the cable protection pipe 2 for closing both ends of the cable protection pipe 2 to perform a sealing test, and an appearance detection assembly 43 disposed on the test bench 1 for recording the bending position of the cable protection pipe 2, cooperating with the sealing assembly 42 to test the maximum bending angle of the cable protection pipe 2 when its own state remains stable, so as to facilitate later construction.

[0029] In summary, first, adjust the bending assembly 33 to an appropriate length according to the length of the cable protection pipe 2. At this time, clamp and fix both ends of the cable protection pipe 2 through the clamping assembly 31. Then connect the sealing assembly 42 to both ends of the cable protection pipe 2 to close both ends of the cable protection pipe 2. Then control the compressor 41 to inject a certain amount of compressed air into the cable protection pipe 2 through the sealing assembly 42, so that the air pressure inside the cable protection pipe 2 is higher than the atmospheric pressure. Then control the pressing assembly 34 to press against the middle section of the cable protection pipe 2 to make the cable protection pipe 2 bend slightly. Then control the appearance detection assembly 43 to continue recording the bending position of the cable protection pipe 2. Then control the bending assembly 33 to continue bending the cable protection pipe 2. When it is bent by a certain angle, keep the cable protection pipe 2 stationary, and continuously detect the device of the cable protection pipe 2 through the appearance detection assembly 43 and the sealing assembly 42. After a period of time, continue to bend the cable protection pipe 2 until gas leakage or cracks appear in the cable protection pipe 2, so as to test the maximum bending angle of the cable protection pipe 2 when it maintains its own stable state. Then slowly release the cable protection pipe 2 through the bending assembly 33 and disconnect the connection between the sealing assembly 42 and the cable protection pipe 2. At this time, the test of the cable protection pipe 2 is completed.

[0030] Embodiment 2, referring to Figure 1 - Figure 8 , is the second embodiment of the present invention. Different from the previous embodiment: the cable protection pipe 2 is bent. Compared with Embodiment 1, further, the clamping assembly 31 includes a bottom plate 311 disposed on the cable protection pipe 2 for supporting and connecting, a clamping plate 312 disposed on the bottom plate 311 for clamping the cable protection pipe 2, a bidirectional threaded rod 313 disposed on the bottom plate 311 for rotation to control the opening or closing of the clamping plate 312 to clamp the cable protection pipe 2, a sliding rod 314 disposed on the bottom plate 311 for maintaining the stability of the movement of the clamping plate 312, and a pin 315 disposed on the clamping plate 312 for blocking the upper part of the clamping plate 312 to prevent the elastic force generated by the bending of the cable protection pipe 2 from driving the cable protection pipe 2 to break away from the clamping plate 312 and fly out to cause injury to personnel.

[0031] Among them, the clamping plate 312 is provided with a first threaded hole 3121 for cooperating with the first bidirectional threaded rod 313, a sliding hole 3122 for cooperating with the sliding rod 314, and a pin hole 3123 for cooperating with the pin 315. The rotation of the first bidirectional threaded rod 313 drives the clamping plate 312 to move back and forth through the first threaded hole 3121. The sliding rod 314 cooperates with the sliding hole 3122 to improve the stability of the clamping plate 312 when moving back and forth. The pin 315 cooperates with the pin hole 3123 to block the notch above the clamping plate 312, preventing the cable protection pipe 2 from flying out during the bending process.

[0032] Among them, the movable assembly 32 includes a movable block 321 arranged below the bottom plate 311, which plays a connecting role, a turntable 322 arranged on the movable block 321 and rotatably connected to the bottom plate 311, which is used to rotate in cooperation with the bending of the cable protection pipe 2, so that the contact between the clamping plate 312 and the cable protection pipe 2 remains stable, preventing the edge of the clamping plate 312 from exerting additional pressure on the outside of the cable protection pipe 2 and preventing damage to the cable protection pipe 2, which may affect the test results of the cable protection pipe 2. There is a sliding groove 323 arranged on the movable block 321, which is used to drive the bottom plate 311 to move slightly when the cable protection pipe 2 is slightly bent, and cooperate with the rotation of the turntable 322 to drive the clamping plate 312 to rotate, so that the force exerted by the device on the cable protection pipe 2 is concentrated at the bending part of the cable protection pipe 2, ensuring the accuracy of the test results.

[0033] Among them, the bending assembly 33 includes a servo motor 331 arranged on the test bench 1, which is used to generate power, a second bidirectional threaded rod 332 arranged on the servo motor 331, which is used to rotate in cooperation with the servo motor 331, and a connecting block 333 arranged on the second bidirectional threaded rod 332, which is used to move back and forth in cooperation with the rotation of the second bidirectional threaded rod 332, driving the clamping plate 312 to bend the cable protection pipe 2. The connecting block 333 is provided with a second threaded hole 3332 for cooperating with the second bidirectional threaded rod 332, which is used to drive the connecting block 333 to move in cooperation with the rotation of the second bidirectional threaded rod 332; The connecting block 333 is provided with a slider 3331 for cooperating with the sliding groove 323 to limit the movement of the movable block 321; The test bench 1 is provided with a moving groove 11 for cooperating with the movement of the connecting block 333 to limit the movement of the connecting block 333.

[0034] Among them, the pressing assembly 34 includes a first support block 341 disposed on the test bench 1, which plays a connecting role, a connecting rod 342 rotatably disposed on the first support block 341, and a pressing wheel 343 disposed on the connecting rod 342. The connecting rod 342 is used to drive the pressing wheel 343 to approach the cable protection pipe 2 and press the cable protection pipe 2 to cause the cable protection pipe 2 to bend slightly, facilitating the subsequent bending of the cable protection pipe 2 by the connecting block 333. The connecting rod 342 can adjust its length to adapt to cable protection pipes 2 of different sizes. The pressing wheel 343 contacts the outer wall of the cable protection pipe 2 to press the cable protection pipe 2.

[0035] Among them, scale lines 12 for cooperating with the bending of the cable protection pipe 2 are provided on the test bench 1, which are used to conveniently record the bending angle of the cable protection pipe 2.

[0036] The remaining structures are the same as those in Embodiment 1.

[0037] In summary, first, rotate the bidirectional threaded rod 313 to drive the clamping plate 312 to open and close to clamp and fix both ends of the cable protection pipe 2. At this time, connect the sealing assembly 42 to both ends of the cable protection pipe 2 to seal both ends of the cable protection pipe 2. Then, control the air compressor 41 to inject a certain amount of compressed air into the cable protection pipe 2 through the sealing assembly 42, so that the air pressure inside the cable protection pipe 2 is higher than the atmospheric pressure. At this time, rotate the connecting rod 342 to drive the pressing wheel 343 to abut against the cable protection pipe 2, and adjust the length of the connecting rod 342 so that the lowest point of the pressing wheel 343 does not contact the highest point of the cable protection pipe 2. Through such a setting, when the pressing wheel 343 presses against the cable protection pipe 2, a horizontal separation is generated, driving the cable protection pipe 2 to bend. When the cable protection pipe 2 bends due to the pressing of the pressing wheel 343, at this time, the bottom plate 311 rotates through the turntable 322 as the directions pointed by both ends change when the cable protection pipe 2 bends. At the same time, when the cable protection pipe 2 bends, the distance between both ends of the cable protection pipe 2 becomes shorter. At this time, the bottom plate 311 moves on the connecting block 333 through the cooperation of the sliding groove 323 and the slider 3331 as the positions of both ends of the cable protection pipe 2 change, so as to cooperate with the changes in the positions and directions of both ends when the cable protection pipe 2 bends. Then, start the servo motor 331 to drive the bidirectional threaded rod 332 to rotate, and drive the connecting blocks 333 to approach each other through the bidirectional threaded rod 332. At this time, the slider 3331 cooperates with the sliding groove 323 to continue to bend the cable protection pipe 2 through the servo motor 331. As the cable protection pipe 2 bends, at this time, the pressing wheel 343 disengages from the contact with the cable protection pipe 2. Then, rotate the connecting rod 342 away from above the test bench 1. At this time, the bottom plate 311 rotates through the turntable 322 to cooperate with the bending angle of the cable protection pipe 2, so that the clamping plate 312 maintains uniform clamping of the cable protection pipe 2, prevents clamping of the outer surface of the cable protection pipe 2, and clearly observes the bending angle of the cable protection pipe 2 through the scale line 12, and cooperates with the sealing assembly 42 and the appearance detection assembly 43 to test the anti-bending performance of the cable protection pipe 2.

[0038] Example 3. Refer to Figure 1 - Figure 8 , which is the second embodiment of the present invention. Different from the previous embodiment: perform performance testing on the bent cable protection pipe 2. Compared with Embodiment 2, further, the sealing assembly 42 includes an air delivery pipe 421 provided on the air compressor 41 for delivering the compressed air generated by the air compressor 41, a plug head 422 provided on the air delivery pipe 421, a plug head 423 provided at one end of the cable protection pipe 2 and cooperating with the plug head 422. The plug head 422 is used to cooperate with the plug head 423 to seal both ends of the cable protection pipe 2 and maintain the airtightness inside the cable protection pipe 2, a connecting rope 424 provided on the plug head 423 for connection, and a fixing block 425 provided on the test bench 1 and connected to the connecting rope 424 for support.

[0039] One end of the gas transmission pipe 421 penetrates through the first plugging head 422 to the inside of the cable protection pipe 2 for conveying compressed air into the cable protection pipe 2. An air pressure sensor is arranged on the second plugging head 423 for detecting the internal pressure of the cable protection pipe 2. When the cable protection pipe 2 is damaged, the air pressure sensor can detect a decrease in the internal air pressure of the cable protection pipe 2, indicating that at the current bending angle of the cable protection pipe 2, it will cause damage to the cable protection pipe 2.

[0040] Among them, the appearance detection component 43 includes a second support block 431 arranged on the test bench 1 for supporting, a robotic arm 432 arranged on the second support block 431 for moving in cooperation with the bending of the cable protection pipe 2, and a camera 433 arranged on the robotic arm 432 for recording the outer surface of the cable protection pipe 2 when it is bent in cooperation with the robotic arm 432. When the cable protection pipe 2 is bent and cracks appear on the surface, it indicates that at the current bending angle of the cable protection pipe 2, it will cause damage to the cable protection pipe 2.

[0041] The remaining structures are the same as those in Embodiment 2.

[0042] In summary, when the clamping plates 312 clamp and fix the two ends of the cable protection pipe 2, at this time, the two ends of the cable protection pipe 2 are blocked by the first plugging head 422 and the second plugging head 423. Then the air compressor 41 is started, and a certain amount of compressed air is conveyed into the cable protection pipe 2 through the gas transmission pipe 421. At this time, the detection data of the air pressure sensor changes. Then, the conveyance of compressed air into the cable protection pipe 2 is stopped until the value of the air pressure sensor remains stable. At this time, as the bottom plate 311 bends the cable protection pipe 2, the camera 433 continuously records the bending of the cable protection pipe 2. At the same time, the air pressure sensor monitors the internal air pressure of the cable protection pipe 2 in real time. When the camera 433 detects cracks on the outer surface of the cable protection pipe 2 or the air pressure sensor detects a decrease in the internal pressure of the cable protection pipe 2, it indicates that at the current bending angle of the cable protection pipe 2, it will cause damage to the cable protection pipe 2, thereby testing and obtaining the maximum bending angle of the cable protection pipe 2 when maintaining its own stable state, preventing excessive bending of the cable protection pipe 2 by personnel during construction and causing damage to the cable protection pipe 2 and being unable to provide protection for the cable.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A cable protection pipe anti-bending performance testing device, characterized in that: It includes a test bench (1), a cable protection pipe (2) arranged on the test bench (1), a bending unit (3) arranged on the test bench (1), and a detection unit (4) arranged on the test bench (1); The bending unit (3) includes a clamping assembly (31) arranged on the cable protection pipe (2), a movable assembly (32) arranged on the clamping assembly (31), a bending assembly (33) arranged on the movable assembly (32), and a pressing assembly (34) arranged on the test bench (1); The detection unit (4) includes a compressor (41) arranged on the test bench (1), a sealing assembly (42) arranged on the compressor (41) and cooperating with the cable protection pipe (2), and an appearance detection assembly (43) arranged on the test bench (1).

2. The cable protection pipe anti-bending performance testing device according to claim 1, wherein: The clamping assembly (31) includes a bottom plate (311) arranged on the cable protection pipe (2), a clamping plate (312) arranged on the bottom plate (311), a first bidirectional threaded rod (313) arranged on the bottom plate (311), a sliding rod (314) arranged on the bottom plate (311), and a retaining pin (315) arranged on the clamping plate (312).

3. The cable protection pipe anti-bending performance testing device according to claim 2, characterized in that: The clamping plate (312) is provided with a first threaded hole (3121) for cooperating with the first bidirectional threaded rod (313), a sliding hole (3122) for cooperating with the sliding rod (314), and a pin hole (3123) for cooperating with the retaining pin (315).

4. The cable protection pipe anti-bending performance testing device according to claim 3, characterized in that: The movable assembly (32) includes a movable block (321) arranged below the bottom plate (311), a turntable (322) arranged on the movable block (321) and rotatably connected to the bottom plate (311), and a sliding groove (323) arranged on the movable block (321).

5. The cable protection pipe anti-bending performance testing device according to claim 4, wherein: The bending assembly (33) includes a servo motor (331) arranged on the test bench (1), a second bidirectional threaded rod (332) arranged on the servo motor (331), and a connecting block (333) arranged on the second bidirectional threaded rod (332). The connecting block (333) is provided with a second threaded hole (3332) for cooperating with the second bidirectional threaded rod (332); The connecting block (333) is provided with a slider (3331) for cooperating with the sliding groove (323); The test bench (1) is provided with a moving groove (11) for cooperating with the connecting block (333).

6. The cable protection pipe anti-bending performance testing device according to claim 5, characterized in that: The pressing assembly (34) includes a first support block (341) arranged on the test bench (1), a connecting rod (342) arranged on the first support block (341), and a pressing wheel (343) arranged on the connecting rod (342).

7. The cable protection pipe anti-bending performance testing device according to claim 6, characterized in that: The test bench (1) is provided with a scale line (12) for cooperating with the bending of the cable protection pipe (2).

8. The cable protection pipe anti-bending performance testing device according to claim 7, characterized in that: The sealing assembly (42) includes an air delivery pipe (421) arranged on the compressor (41), a first plugging head (422) arranged on the air delivery pipe (421), a second plugging head (423) arranged at one end of the cable protection pipe (2) and cooperating with the first plugging head (422), a connecting rope (424) arranged on the second plugging head (423), and a fixing block (425) arranged on the test bench (1) and connected to the connecting rope (424).

9. The cable protection pipe anti-bending performance testing device according to claim 8, characterized in that: One end of the gas pipeline (421) penetrates through the first plugging head (422) to the inside of the cable protection pipe (2), and an air pressure sensor is provided on the second plugging head (423).

10. The cable protection pipe anti-bending performance testing device according to claim 9, characterized in that: The appearance detection component (43) includes a second support block (431) arranged on the test bench (1), a robotic arm (432) arranged on the second support block (431), and a camera (433) arranged on the robotic arm (432).

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