A high-voltage cable sheath quality detection device

Abstract

The application discloses a high-voltage cable skin quality detection device and belongs to the technical field of high-voltage cable quality detection, which comprises a machine table, symmetrical electric sliding tables are arranged on both sides of the machine table, a reciprocating sliding mechanism is arranged on the moving ends of the two electric sliding tables, a cable clamping device is arranged on the reciprocating sliding mechanism, an adjustable bending mechanism is arranged in the cable clamping device and penetrates through the cable clamping device in a sliding mode, an inclined sliding groove is arranged on the upper wall of the machine table, the bottom end of the adjustable bending mechanism is connected with the inclined sliding groove in a sliding mode, a follow-up switching type wear resistance detection mechanism is arranged on the machine table in a sliding mode, and a plurality of friction parts are arranged on the follow-up switching type wear resistance detection mechanism along the length direction of the electric sliding table. The high-voltage cable skin quality detection device can be used for implementing wear resistance detection of different roughness degrees on different sections of a cable sample, so that the wear resistance of the cable under different working conditions can be detected.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage cable quality testing technology, specifically referring to a high-voltage cable sheath quality testing device. Background Technology

[0002] The outer sheath, or insulation layer, of high-voltage cables is primarily made of cross-linked polyethylene, polyvinyl chloride, or EPDM rubber, among other polymer materials. Its core functions are insulation protection and resistance to external mechanical damage and environmental corrosion. Throughout the cable's lifespan, abrasion resistance is a crucial aspect of its mechanical performance. Insufficient abrasion resistance in the high-voltage cable sheath can lead to insulation damage, leakage, and even short circuits, resulting in widespread power outages, equipment burnout, and other serious consequences. Therefore, it is necessary to test the abrasion resistance of the cable sheath during production. By simulating external friction conditions, the abrasion resistance of the sheath can be evaluated to ensure that the cable sheath meets abrasion resistance standards from the outset, mitigating safety risks during later operation and maintenance, and reducing accident losses.

[0003] Existing technologies have also proposed some solutions for cable abrasion resistance testing. For example, a patent application with publication number CN118464698B discloses a cable abrasion resistance testing device that can simulate the friction of a cable under bending conditions to test the cable's abrasion resistance. This solution has the following limitations: the sample fixing process is relatively cumbersome, and the ends are prone to slippage; it can only perform abrasion resistance testing under bending conditions, while in actual working conditions, cables often bear the combined effects of tension, bending, torsion, and friction. Therefore, abrasion resistance testing under tension and torsion conditions is also necessary; in addition, this device cannot test the cable's abrasion resistance performance under energized conditions, the test results are not accurate enough, and the surface roughness of the friction head used is relatively uniform, which cannot reflect the differences in the roughness of the object's surface in different usage environments, thus making it difficult to comprehensively evaluate the cable's abrasion resistance performance under different rough working conditions. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a high-voltage cable sheath quality testing device, which can perform wear resistance testing on different sections of the cable sample with different roughness levels, so as to test the wear resistance of the cable under different working conditions.

[0005] The technical solution adopted by this invention is as follows: This invention provides a high-voltage cable sheath quality testing device, comprising a machine base. Electric sliding tables are symmetrically arranged on both sides of the machine base. A reciprocating sliding mechanism is mounted on the moving ends of the two electric sliding tables, perpendicular to the electric sliding tables. A cable clamping device is slidably installed along the length direction on the reciprocating sliding mechanism. The cable clamping device quickly clamps and fixes the high-voltage cable. An adjustable bending mechanism is slidably installed inside the cable clamping device. The adjustable bending mechanism can guide the high-voltage cable through bending, simulating the bending posture of the cable under actual working conditions. Based on this, the wear resistance of the high-voltage cable sheath is tested. The sliding direction of the clamping device is parallel to the sliding direction of the adjustable bending mechanism. The upper wall of the machine platform is provided with an inclined slide groove, which is located below the cable clamping device. The bottom end of the adjustable bending mechanism is slidably connected to the inclined slide groove. The sliding frame on the machine platform is provided with a follow-up switching wear resistance testing mechanism. The follow-up switching wear resistance testing mechanism is parallel to the electric slide table. The sliding direction of the follow-up switching wear resistance testing mechanism is the same as the sliding direction of the reciprocating sliding mechanism. The follow-up switching wear resistance testing mechanism is provided with multiple friction parts along the length of the electric slide table. Each friction part has a different surface roughness. The follow-up switching wear resistance testing mechanism is slidably connected to the adjustable bending mechanism.

[0006] After the electric slide is started, it drives the reciprocating sliding mechanism and the cable clamping device to slide along the length direction (first direction) of the electric slide. Simultaneously, the cable clamping device drives the adjustable bending mechanism to move along the first direction. During this process, the bottom end of the adjustable bending mechanism is limited and guided by the inclined slide groove, allowing it to move along the first direction while simultaneously displacing along the length direction (second direction) of the reciprocating sliding mechanism. The movement of the adjustable bending mechanism along the first direction causes the cable to slide relative to the follow-up switching abrasion resistance testing mechanism along the first direction, thereby allowing the cable sheath to sequentially contact friction parts with different roughnesses on the follow-up switching abrasion resistance testing mechanism, achieving the switching of testing conditions. The movement of the adjustable bending mechanism along the second direction can drive the follow-up switching abrasion resistance testing mechanism... The mechanism slides synchronously along the second direction, thereby adjusting the relative positions of the adjustable bending mechanism and the follow-up switching abrasion resistance testing mechanism on the cable clamping device. This enables abrasion resistance testing of the high-voltage cable sheath at different axial positions. Through the synchronous movement of the adjustable bending mechanism in the first and second directions, different parts of the cable come into contact with friction parts of different roughness and are tested, eliminating the need for repeated disassembly and reassembly of cable samples. When the reciprocating sliding mechanism is activated, it drives the cable clamping device and the adjustable bending mechanism to slide back and forth along the second direction. This causes the high-voltage cable, which is clamped and fixed by the cable clamping device, to slide back and forth relative to the follow-up switching abrasion resistance testing mechanism. Through the relative friction between the follow-up switching abrasion resistance testing mechanism and the cable sheath, the abrasion resistance testing of the high-voltage cable sheath is completed.

[0007] The cable clamping device includes a clamping base, a mounting base, a pre-tension adjustment component, a pre-torsion adjustment component, and two opposing clamping mechanisms. The clamping base is slidably mounted on a reciprocating sliding mechanism. The mounting bases are symmetrically slidably mounted on both ends of the upper wall of the clamping base. The upper wall of the clamping base has parallel bidirectional sliding grooves and adjustment grooves extending along its length. A bidirectional moving component is provided within the bidirectional sliding groove to drive the two mounting bases to slide synchronously in opposite directions. The pre-tension adjustment component and the pre-torsion adjustment component are respectively located above the two mounting bases. The two clamping mechanisms are respectively located at the ends of the pre-tension adjustment component and the pre-torsion adjustment component. An adjustable bending mechanism is slidably mounted within the adjustment groove. A linkage mechanism is provided between the bidirectional moving component and the adjustable bending mechanism. The linkage mechanism can drive the adjustable bending mechanism to adjust the bending degree of the high-voltage cable, while simultaneously driving the bidirectional moving component to operate synchronously. This, in turn, causes the two mounting bases to move synchronously with changes in the cable bending degree. With the length of the cable under test remaining constant, the distance between the two clamping mechanisms is adjusted to adapt to the dynamic changes in the bending degree of the high-voltage cable under test, ensuring that the cable remains in a stable clamping state during the bending test.

[0008] The linkage mechanism includes a spline shaft, a spline sleeve, and a transmission assembly. The spline shaft is rotatably mounted in an adjusting groove, and the spline sleeve is slidably mounted on the outside of the spline shaft. The spline shaft and the spline sleeve cooperate with each other. The outer peripheral wall of the spline shaft is machined with evenly distributed key teeth, and the inner peripheral wall of the spline sleeve is correspondingly provided with keyways. The spline shaft and the spline sleeve form a sliding guide fit through the meshing of the key teeth and keyways. The two ends of the circumferential sidewall of the spline sleeve are symmetrically provided with threads in opposite directions. An adjustable bending mechanism is threadedly connected to both ends of the spline sleeve. The transmission assembly is located between the spline shaft and the bidirectional moving assembly, and the transmission assembly enables the spline shaft and the bidirectional moving assembly to operate synchronously.

[0009] The clamping mechanism includes an anti-detachment rod, an anti-detachment spring, a clamping rod, a clamping plate, and a clamping sleeve with an opening on one side. The clamping sleeve has multiple anti-detachment grooves arranged in a circumferential array, extending from the edge of the clamping sleeve near the opening towards the center. The anti-detachment rod has a pivot in its center, allowing it to rotatably engage with the anti-detachment grooves. One end of the anti-detachment rod, away from the opening of the clamping sleeve, extends into the clamping sleeve, while the other end extends out. The anti-detachment spring is located between the anti-detachment rod and the clamping sleeve. The anti-detachment spring is used for… A force is applied to the anti-detachment rod, pushing the end of the anti-detachment rod away from the opening of the clamping sleeve to rotate towards the central axis of the clamping sleeve. The clamping sleeve has symmetrical through holes at the end away from the opening, and its outer wall is threaded. A sliding sleeve is threadedly connected to the outer side of the clamping sleeve. A pushing sleeve is rotatably connected to the end of the sliding sleeve away from the anti-detachment rod. A clamping plate is symmetrically slidably disposed within the clamping sleeve, between the anti-detachment rod and the closed end of the clamping sleeve. A clamping recess is formed at the end of the pushing sleeve away from the sliding sleeve. The clamping rod has one end rotatably positioned within the clamping groove, and the other end passing through a through hole and extending into the clamping sleeve, where it is rotatably connected to the clamping plate. The clamping plate has a conductive protrusion on its side near the axis of the clamping sleeve. This conductive protrusion can be electrically connected to an external power source or rated load, facilitating the testing of the cable's abrasion resistance while the cable is energized. The radial distance from the end of the anti-disengagement rod extending from the clamping sleeve to the axis of the rotating shaft is greater than the radial distance from the inner wall of the sliding sleeve to the axis of the rotating shaft. Therefore, when the sliding sleeve moves along the clamping sleeve... When the sliding sleeve moves towards the opening and approaches the anti-detachment rod, its inner wall will push against the protruding end of the anti-detachment rod, forcing the anti-detachment rod to overcome the force of the anti-detachment spring and rotate around the pivot, causing its inner end to move away from the central axis of the clamping sleeve, thereby releasing the clamped cable. Conversely, when the sliding sleeve moves in the opposite direction, under the reset action of the anti-detachment spring, the inner end of the anti-detachment rod rotates back towards the central axis, realizing the axial anti-detachment function. At the same time, the axial movement of the sliding sleeve is converted into the radial sliding of the clamping plate through the clamping rod, realizing the clamping or releasing of the cable end.

[0010] The adjustable bending mechanism includes a central slide and guide components symmetrically slidably disposed on both sides of the central slide. The central slide and guide components are slidably disposed in an adjustment groove. The middle part of the spline sleeve rotatably passes through the central slide. The bottom wall of the central slide is provided with a follower slide shaft, which is slidably connected to an inclined slide groove. The guide components are slidably disposed at both ends of the spline sleeve. The two symmetrically disposed guide components are threadedly connected to both ends of the spline sleeve. The follower-switching wear resistance testing mechanism includes a lifting slide slidably disposed on the upper wall of the machine platform and a testing component slidably disposed vertically on the lifting slide. The lifting slide is arranged in a U-shape. The sliding direction of the lifting slide is parallel to the sliding direction of the cable clamping device. A bending connecting rod is provided between the testing component and the two guide components. One end of the bending connecting rod is rotatably connected to the guide component. The other end of the two bending connecting rods is rotatably connected to a sliding sleeve. The sliding sleeve is slidably connected to the follower-switching wear resistance testing mechanism.

[0011] More specifically, the upper wall of the machine platform is provided with a second guide rail parallel to the clamping base, and the bottom end of the lifting slide is provided with a guide slide seat adapted to the second guide rail. The guide slide seat is slidably connected to the second guide rail, and the lifting slide is slidably mounted on the upper wall of the machine platform through the guide slide seat and the second guide rail.

[0012] Preferably, the guiding assembly includes a guide frame, an adjusting screw, and a guide screw seat. The guide screw seat is slidably disposed in an adjusting groove. A guide slide rail is provided along the length of the inner wall of the adjusting groove. The side wall of the guide screw seat is slidably connected to the guide slide rail. The spline sleeve slidably passes through the guide screw seat. The thread on the outer wall of the spline sleeve is threadedly connected to the guide screw seat. The guide screw seats of the two guiding assemblies are respectively threadedly connected to both ends of the spline sleeve. The guide frame is disposed at the upper end of the guide screw seat. Two sets of guide roller assemblies are symmetrically arranged vertically inside the guide frame. The guide roller assemblies are slidably connected to the guide frame. An adjusting screw hole is opened on the upper wall of the guide frame. The adjusting screw passes through the adjusting screw hole. The lower end of the adjusting screw is rotatably connected to the upper guide roller assembly. The adjusting screw facilitates the adjustment of the distance between the two guide roller assemblies to accommodate cables of different diameters.

[0013] When the spline sleeve rotates under the drive of the linkage mechanism, the circumferential rotational freedom of the guide screw seat is restricted by the guide slide rail, and the rotational motion of the spline sleeve is converted into the linear movement of the guide screw seat along the adjustment groove. The guide screw seats of the two guide components are respectively connected to the two ends of the spline sleeve, and can move closer or further away synchronously with the rotation of the spline sleeve, thereby driving the guide frame to move synchronously. When the two guide components move closer or further away synchronously, the bending connecting rod drives the follow-up switching wear resistance testing mechanism located between the two guide components to move up and down, driving the cable between the two guide components to bend and deform, thereby driving the cable under test to form a bending arc that matches the testing requirements, so as to realize the wear resistance testing of the cable under bending conditions.

[0014] More specifically, the guide roller assembly includes a roller frame and a guide roller. The guide roller is rotatably mounted on the roller frame and is arranged in an hourglass shape. The hourglass-shaped guide roller design can provide radial constraint and centering effect on the cable when it passes through, effectively preventing the cable from lateral slippage or deviation during axial movement.

[0015] Furthermore, the detection assembly includes a detection frame, a switching guide post, a second adjusting screw, and two sets of friction components arranged symmetrically vertically. The detection frame is slidably disposed vertically within the lifting carriage. The switching guide post is horizontally disposed at the bottom end of the detection frame and is parallel to the electric slide table. The sliding sleeve is slidably connected to the switching guide post. The two sets of friction components are vertically slidably disposed within the detection frame. The upper wall of the detection frame has a second adjusting screw hole. The second adjusting screw passes through the second adjusting screw hole and is threadedly connected to the second adjusting screw hole. The bottom end of the second adjusting screw is rotatably connected to the friction components above.

[0016] Furthermore, the guide frame is provided with a bidirectional sliding component one, which is located between two guide roller assemblies and drives the two guide roller assemblies to move synchronously in opposite directions. The detection frame is provided with a bidirectional sliding component two, which is located between two friction assemblies and drives the two friction assemblies to move synchronously in opposite directions. The bidirectional sliding component one includes a gear and racks located on both sides of the gear. The gear is rotatably located in the middle of the side wall of the guide frame, and the racks mesh with the two sides of the gear respectively. Each rack is fixedly connected to a guide roller assembly, so that when one guide roller assembly moves, it drives the rack connected to it to move up and down. The rack drives the gear to rotate, and the gear further drives the rack on the other side to move in the opposite direction, thereby causing the other guide roller assembly to move in the opposite direction, realizing the synchronous reverse displacement of the two guide roller assemblies, ensuring that the cable always stays in the center position of the guide frame during the guiding process, and improving the centering and stability. The bidirectional sliding component two has the same structure as the bidirectional sliding component one. The gear of the bidirectional sliding component two is rotatably located in the middle of the side wall of the detection frame, and the two racks of the bidirectional sliding component two are respectively connected to the two friction assemblies.

[0017] More specifically, the friction assembly includes a fixed frame and friction columns mounted on the fixed frame. The friction columns are detachably mounted on the fixed frame by bolts. The friction parts are equidistantly arranged on the surface of the friction columns along the axial direction. An electric slide table can drive a reciprocating sliding mechanism and a cable clamping device to slide along a first direction. The cable clamping device simultaneously drives an adjustable bending mechanism to move along the first direction, thereby causing the clamped cable to sequentially contact friction parts with different roughnesses on the friction columns. During this process, the bottom end of the adjustable bending mechanism is limited and guided by the inclined slide groove, and can move along the first direction while simultaneously displacing along the second direction, thereby adjusting the relative position of the adjustable bending mechanism on the cable clamping device. This allows different parts of the cable to contact different friction parts, thus enabling different sections of the cable to contact friction parts with different roughnesses in a single continuous test, achieving wear resistance testing of multiple parts of the cable surface under different friction conditions.

[0018] The bidirectional moving assembly includes a bidirectional screw, and the upper wall of the clamping base is provided with a bidirectional sliding groove. The bidirectional screw is rotatably disposed within the bidirectional sliding groove. Multiple sets of bidirectional sliding grooves and bidirectional screws can be arranged in parallel. The two ends of the bidirectional screw are provided with threads in opposite directions. The bottom wall of the mounting base is provided with a sliding screw seat, which is slidably engaged within the bidirectional sliding groove. The sliding screw seats on the bottom walls of the two mounting bases are respectively threaded to the two ends of the bidirectional screw. When the bidirectional screw rotates, it drives the mounting base to move synchronously in opposite directions along the bidirectional sliding groove through the sliding screw seats, so that the two mounting bases move closer to each other or separate in opposite directions.

[0019] As a further improvement to this solution, the transmission assembly includes a first gear and a second gear that mesh with each other. The first gear is coaxially connected to a bidirectional screw, and the second gear is coaxially connected to a spline shaft. A drive motor is provided on the side wall of the clamping base. The output shaft of the drive motor is connected to the second gear. The thread on the outer wall of the spline sleeve has the opposite direction of rotation and the same pitch as the thread on the side wall of the bidirectional screw.

[0020] The drive motor drives gear two to rotate, which in turn drives the spline shaft to rotate in the same direction and drives gear one, which meshes with it, to rotate in the opposite direction. The spline shaft drives the spline sleeve to rotate, and gear one drives the double-headed screw to rotate. The double-headed screw rotates in the opposite direction to the spline sleeve. The spline sleeve drives the two guide components to move in the opposite direction, and at the same time, the double-headed screw drives the two mounting seats to move in the opposite direction. Since the threads on the outer wall of the spline sleeve and the threads on the side wall of the double-headed screw have opposite directions of rotation and the same pitch, the two guide components and the two mounting seats move synchronously in a one-to-one correspondence, and the moving distance is equal. Therefore, the distance between the guide components and the mounting seats always remains unchanged.

[0021] Furthermore, the pre-tension adjustment assembly includes a pre-tension screw, a fixed screw seat, a pre-tension slide, and a tension gauge. The fixed screw seat is mounted on the mounting base, and the pre-tension slide is slidably mounted on the clamping base. The pre-tension slide is located on the side of the mounting base near the middle of the clamping base. The pre-tension screw slides through the fixed screw seat and is threadedly connected to the fixed screw seat. The end of the pre-tension screw is rotatably connected to the pre-tension slide. The tension gauge is located on the side of the pre-tension slide away from the mounting base, and the clamping mechanism is located on the side of the tension gauge away from the pre-tension slide.

[0022] By turning the pretension screw, the pretension slide can be moved to slide along the clamping base, thereby adjusting the distance between the pretension slide and the mounting base, so as to apply a set pretension force to the cable sample to be tested clamped between the two. This structure facilitates abrasion resistance testing of cable samples under different pretension force conditions. The tension gauge is used to detect and display the magnitude of the applied pretension force in real time, thereby realizing precise control and monitoring of test conditions.

[0023] More specifically, the pre-torque adjustment assembly includes a fixed plate, an angle sensor, a worm gear, and a worm wheel. The fixed plate is located on the upper wall of the mounting base, and the upper wall of the fixed plate has a pre-torque cavity. The worm gear and worm wheel are rotatably located in the pre-torque cavity, and the worm gear meshes with the worm wheel. The outer wall of the pre-torque cavity is provided with a pre-torque handle that is coaxially fixed to the worm gear. The angle sensor is located on the outer wall of the pre-torque cavity and is connected to the worm wheel. The clamping mechanism is coaxially fixed to the worm wheel.

[0024] During operation, turning the pre-torsion handle drives the worm gear to rotate, which in turn drives the worm wheel to rotate. The worm wheel then drives the clamping mechanism to rotate, causing the clamped cable sample to undergo torsional deformation. Based on the self-locking characteristics of the worm gear transmission mechanism, the cable's preset torsion state can be maintained after adjustment, ensuring the stability of the torsion angle during the test. The rotation angle sensor is used to detect and output the rotation angle of the clamping mechanism in real time, thereby achieving accurate monitoring and control of the cable's pre-torsion angle.

[0025] Preferably, the reciprocating sliding mechanism includes a reciprocating slide and a reciprocating electric actuator disposed within the reciprocating slide. The two ends of the reciprocating slide are mounted on two electric slide platforms. The clamping base is slidably disposed within the reciprocating slide. The reciprocating electric actuator is disposed between the reciprocating slide and the clamping base. The reciprocating electric actuator includes a reciprocating motor, a housing, a reciprocating lead screw, and a drive actuator. The reciprocating lead screw is rotatably disposed within the housing. One end of the drive actuator slides through the housing and extends out of the housing. The other end of the drive actuator has a sliding groove along its axial direction. The reciprocating lead screw passes through the sliding groove. A reciprocating nut adapted to the reciprocating lead screw is fixedly installed at the end of the sliding groove. The reciprocating screw has two threaded grooves with the same pitch and opposite directions on its surface. The two ends of the two threaded grooves are smoothly connected by a curved slide, so that when the reciprocating screw rotates, the reciprocating nut makes a continuous and stable reciprocating linear motion along the axis of the reciprocating screw, thereby driving the drive push rod to make a synchronous reciprocating linear motion. The reciprocating nut is threadedly engaged with the reciprocating screw. The reciprocating motor is located on the outside of the housing, and the output end of the reciprocating motor is connected to the reciprocating screw. The reciprocating screw and the reciprocating nut that are adapted to the reciprocating screw are existing technologies and will not be described in detail here. The housing is located on the reciprocating slide, and one end of the drive push rod that extends out of the housing is connected to the clamping base.

[0026] Preferably, the machine tool is equipped with a controller and a display is provided on the side wall of the machine tool. The controller is electrically connected to the display, the force gauge, and the angle sensor respectively. The display facilitates the display of the detection results of the angle sensor and the force gauge.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] 1. By combining the pre-tension adjustment component, the pre-torsion adjustment component, and the adjustable bending mechanism, the abrasion resistance test of the cable under tension, torsion, and bending conditions can be simulated independently or in combination, which is more in line with the actual use environment.

[0029] 2. The follow-up switching wear resistance testing mechanism is equipped with multiple friction parts with different roughnesses, which can simulate the friction conditions of different usage environments, solving the problem of the single roughness of the existing friction head. At the same time, through the inclined slide groove and the adjustable bending mechanism with sliding setting, the follow-up switching wear resistance testing mechanism can realize the continuous testing of different sections of the cable under different roughness friction conditions without the need for repeated clamping.

[0030] 3. The rotation of the spline sleeve drives the guide components on both sides to move closer or further away synchronously. The bending linkage drives the detection component to rise and fall, realizing stepless adjustment of the cable bending arc to adapt to different bending conditions. At the same time, the linkage mechanism realizes synchronous adjustment of bending and clamping. The spline shaft, spline sleeve and bidirectional moving component are linked through the transmission component to drive the mounting base and guide component to move synchronously. This ensures that the clamping distance at both ends dynamically adapts to the bending arc when the cable is bent, maintaining the cable tension and avoiding the cable being too loose or too tight. The bending adjustment and clamping distance adjustment are automated and coordinated, eliminating the need for manual secondary adjustment and improving operation efficiency and detection stability.

[0031] 4. By using the sliding sleeve and pushing sleeve in conjunction with the clamping rod and clamping plate, the cable end can be quickly clamped and fixed, and it is suitable for cables of different diameters. At the same time, the anti-detachment spring drives the anti-detachment rod to automatically engage with the cable end, forming a mechanical anti-detachment mechanism to prevent the cable from moving axially during the test and to prevent the cable from slipping during the test.

[0032] 5. The clamping plate can be clamped and the anti-slip rod can be prevented from axially slipping by simply turning the sliding sleeve, which solves the problems of cumbersome sample fixing and easy slippage in the existing technology and greatly shortens the clamping time.

[0033] 6. Conductive protrusions are integrated into the clamping plate to support abrasion resistance testing of the cable while it is energized. Attached Figure Description

[0034] Figure 1 A schematic diagram of the structure of a high-voltage cable sheath quality testing device provided by the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of a high-voltage cable sheath quality testing device provided by the present invention from another perspective;

[0036] Figure 3 A schematic diagram of the combined structure of the reciprocating sliding mechanism, cable clamping device, adjustable bending mechanism and follow-up switching wear resistance testing mechanism provided by the present invention.

[0037] Figure 4 A schematic diagram of the combined structure of the cable clamping device, adjustable bending mechanism, and follow-up switching abrasion resistance testing mechanism provided by the present invention;

[0038] Figure 5 for Figure 4 A magnified view of part A;

[0039] Figure 6 A schematic diagram of the combined structure of the adjustable bending mechanism and the follow-up switching wear resistance testing mechanism provided by the present invention;

[0040] Figure 7 This is a schematic diagram of the structure of the follow-up switching wear resistance testing mechanism provided by the present invention;

[0041] Figure 8 A schematic diagram of the adjustable bending mechanism and spline sleeve provided by the present invention;

[0042] Figure 9 This is a schematic diagram of the structure of the transmission assembly provided by the present invention;

[0043] Figure 10 A schematic diagram of the combined structure of the mounting base, pre-torsion adjustment component and clamping mechanism provided by the present invention;

[0044] Figure 11 A schematic diagram of the combined structure of the pre-torsion adjustment assembly and clamping mechanism provided by the present invention, without the fixing plate and the pre-torsion cavity;

[0045] Figure 12 A schematic diagram of the combined structure of the mounting base, pre-tension adjustment component and clamping mechanism provided by the present invention;

[0046] Figure 13 An exploded view of the guide assembly provided by the present invention;

[0047] Figure 14 This is a schematic diagram of the clamping mechanism provided by the present invention;

[0048] Figure 15 A cross-sectional view of the clamping mechanism provided by the present invention;

[0049] Figure 16 This is a cross-sectional view of the reciprocating electric actuator provided by the present invention.

[0050] The components include: 1. Machine base; 2. Electric slide table; 3. Reciprocating sliding mechanism; 4. Cable clamping device; 5. Adjustable bending mechanism; 6. Inclined slide groove; 7. Follow-up switching wear resistance testing mechanism; 8. Friction part; 9. Clamping base; 10. Mounting base; 11. Pre-tension adjustment component; 12. Pre-torsion adjustment component; 13. Clamping mechanism; 14. Adjustment groove; 15. Bidirectional moving component; 16. Linkage mechanism; 17. Splined shaft; 18. Splined sleeve; 19. Transmission... 20. Moving component, clamping sleeve, 21. anti-disengagement rod, 22. anti-disengagement spring, 23. clamping rod, 24. clamping plate, 25. anti-disengagement groove, 26. rotating shaft, 27. through hole, 28. sliding sleeve, 29. pushing sleeve, 30. clamping groove, 31. conductive protrusion, 32. center slide, 33. guide assembly, 34. follower slide shaft, 35. lifting slide, 36. detection assembly, 37. bending connecting rod, 38. guide slide rail two, 39. guide slide, 4 0. Guide frame; 41. Display; 42. Adjusting screw one; 43. Guide screw seat; 44. Guide slide rail one; 45. Guide roller assembly; 46. Adjusting screw hole one; 47. Detection frame; 48. Switching guide post; 49. Adjusting screw two; 50. Friction assembly; 51. Adjusting screw hole two; 52. Bidirectional sliding assembly one; 53. Bidirectional sliding assembly two; 54. Gear; 55. Rack; 56. Fixing bracket; 57. Friction column; 58. Bidirectional screw; 59. 60. Bidirectional slide rail, 61. Sliding screw seat, 62. Gear 1, 63. Gear 2, 64. Drive motor, 65. Pre-tension screw, 66. Fixed screw seat, 67. Pre-tension slide, 68. Force gauge, 69. Fixed plate, 70. Angle sensor, 71. Worm gear, 72. Pre-torsion cavity, 73. Reciprocating slide, 74. Reciprocating electric actuator, 75. Sliding sleeve, 76. Reciprocating motor, 77. Housing, 78. Reciprocating lead screw, 79. Drive actuator.

[0051] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] like Figures 1-16 As shown, the present invention provides a high-voltage cable sheath quality inspection device, including a machine base 1. Electric sliding tables 2 are symmetrically arranged on both sides of the machine base 1. The electric sliding tables 2 are existing technology and will not be described in detail here. A reciprocating sliding mechanism 3 is mounted on the moving ends of both electric sliding tables 2. The reciprocating sliding mechanism 3 is perpendicular to the electric sliding tables 2. A cable clamping device 4 is slidably installed on the reciprocating sliding mechanism 3 along its length direction. The cable clamping device 4 quickly clamps and fixes the high-voltage cable. An adjustable bending mechanism 5 is slidably inserted through the cable clamping device 4. The adjustable bending mechanism 5 can guide the high-voltage cable through bending, simulating the bending posture of the cable under actual working conditions. Based on this, the wear resistance of the high-voltage cable sheath is tested. The sliding direction of the cable clamping device 4 is parallel to the sliding direction of the adjustable bending mechanism 5. The upper wall of the machine base 1 is provided with an inclined slide groove 6, which is located below the cable clamping device 4. The bottom end of the adjustable bending mechanism 5 is slidably connected to the inclined slide groove 6. The sliding frame on the machine base 1 is provided with a follow-up switching wear resistance testing mechanism 7. The follow-up switching wear resistance testing mechanism 7 is parallel to the electric slide table 2. The sliding direction of the follow-up switching wear resistance testing mechanism 7 is the same as the sliding direction of the reciprocating sliding mechanism 3. The follow-up switching wear resistance testing mechanism 7 is provided with multiple friction parts 8 along the length of the electric slide table 2. Each friction part 8 has a different surface roughness. The follow-up switching wear resistance testing mechanism 7 is slidably connected to the adjustable bending mechanism 5.

[0055] See Figures 1-5The cable clamping device 4 includes a clamping base 9, a mounting base 10, a pre-tension adjustment component 11, a pre-torsion adjustment component 12, and two opposing clamping mechanisms 13. The clamping base 9 is slidably mounted on a reciprocating sliding mechanism 3. The mounting bases 10 are symmetrically slidably mounted on both ends of the upper wall of the clamping base 9. The upper wall of the clamping base 9 has a parallel bidirectional sliding groove 59 and an adjustment groove 14 extending along its length. A bidirectional moving component 15 is provided in the bidirectional sliding groove 59 to drive the two mounting bases 10 to slide synchronously in opposite directions. The pre-tension adjustment component 11 and the pre-torsion adjustment component 12 are respectively located above the two mounting bases 10. The two clamping mechanisms 13 are respectively located on the pre-tension adjustment component 10. The ends of the adjusting component 11 and the pre-twist adjusting component 12; the adjustable bending mechanism 5 is slidably disposed in the adjusting groove 14, and a linkage mechanism 16 is provided between the bidirectional moving component 15 and the adjustable bending mechanism 5. The linkage mechanism 16 can drive the adjustable bending mechanism 5 to adjust the bending degree of the high-voltage cable, and at the same time drive the bidirectional moving component 15 to run synchronously, thereby driving the two mounting seats 10 to move synchronously with the change of the bending degree of the cable. When the length of the cable sample to be tested remains unchanged, the distance between the two clamping mechanisms 13 is adjusted to adapt to the dynamic change of the bending degree of the high-voltage cable to be tested, and to ensure that the cable is always in a stable clamping state during the bending test.

[0056] like Figures 1-3 and Figure 16 As shown, the reciprocating sliding mechanism 3 includes a reciprocating slide 73 and a reciprocating electric actuator 74 disposed within the reciprocating slide 73. Both ends of the reciprocating slide 73 are mounted on two electric slide tables 2. The clamping base 9 is slidably disposed within the reciprocating slide 73. The reciprocating electric actuator 74 is disposed between the reciprocating slide 73 and the clamping base 9. In this embodiment, the reciprocating electric actuator 74 includes a reciprocating motor 76, a housing 77, a reciprocating lead screw 78, and a drive actuator 79. The reciprocating lead screw 78 is rotatably disposed within the housing 77. One end of the drive actuator 79 slides through the housing 77 and extends out of the housing 77. The other end of the drive actuator 79 has a sliding groove along its axial direction. The reciprocating lead screw 78 passes through the sliding groove. The end of the sliding groove is fixedly installed with a component that is connected to the reciprocating lead screw 76. The reciprocating nut is adapted to the 8 phases. The surface of the reciprocating screw 78 is provided with two threaded grooves with the same pitch and opposite directions. The two ends of the two threaded grooves are smoothly connected by a curved slide, so that when the reciprocating screw 78 rotates, the reciprocating nut makes a continuous and stable reciprocating linear motion along the axis of the reciprocating screw 78, thereby driving the drive push rod 79 to perform a synchronous reciprocating linear motion. The reciprocating nut is threadedly engaged with the reciprocating screw 78. The reciprocating motor 76 is located on the outside of the housing 77. The output end of the reciprocating motor 76 is connected to the reciprocating screw 78. The reciprocating screw 78 and the reciprocating nut adapted to the reciprocating screw 78 are existing technologies and will not be described in detail here. The housing 77 is located on the reciprocating slide 73. One end of the drive push rod 79 extending out of the housing 77 is connected to the clamping base 9.

[0057] The linkage mechanism 16 includes a spline shaft 17, a spline sleeve 18, and a transmission assembly 19. The spline shaft 17 is rotatably disposed in the adjustment groove 14, and the spline sleeve 18 is slidably sleeved on the outside of the spline shaft 17. The spline shaft 17 and the spline sleeve 18 cooperate with each other. The outer peripheral wall of the spline shaft 17 is machined with evenly distributed key teeth, and the inner peripheral wall of the spline sleeve 18 is correspondingly provided with keyways. The spline shaft 17 and the spline sleeve 18 form a sliding guide fit through the meshing of the key teeth and keyways. The two ends of the circumferential sidewall of the spline sleeve 18 are symmetrically provided with threads of opposite directions. The adjustable bending mechanism 5 is threadedly connected to the two ends of the spline sleeve 18. The transmission assembly 19 is disposed between the spline shaft 17 and the bidirectional moving assembly 15, and the transmission assembly 19 enables the spline shaft 17 and the bidirectional moving assembly 15 to operate synchronously.

[0058] like Figures 2-9 As shown, the bidirectional moving assembly 15 includes a bidirectional screw 58, and the upper wall of the clamping base 9 is provided with a bidirectional sliding groove 59. The bidirectional screw 58 is rotatably disposed in the bidirectional sliding groove 59. Multiple sets of bidirectional sliding grooves 59 and bidirectional screws 58 can be arranged in parallel. The two ends of the bidirectional screw 58 are provided with threads in opposite directions. The bottom wall of the mounting base 10 is provided with a sliding screw seat 60. The sliding screw seat 60 is slidably locked in the bidirectional sliding groove 59. The sliding screw seats 60 on the bottom walls of the two mounting bases 10 are respectively threaded to the two ends of the bidirectional screw 58. When the bidirectional screw 58 rotates, it drives the mounting base 10 to move synchronously in opposite directions along the bidirectional sliding groove 59 through the sliding screw seat 60, so that the two mounting bases 10 move closer to each other or separate in opposite directions.

[0059] The transmission assembly 19 includes a first gear 61 and a second gear 62 that mesh with each other. The first gear 61 is coaxially connected to the bidirectional screw 58, and the second gear 62 is coaxially connected to the spline shaft 17. The side wall of the clamping base 9 is provided with a drive motor 63, and the output shaft of the drive motor 63 is connected to the second gear 62. The thread on the outer wall of the spline sleeve 18 has the opposite direction of rotation and the same pitch as the thread on the side wall of the bidirectional screw 58.

[0060] like Figures 1-8As shown, the adjustable bending mechanism 5 includes a central slide 32 and guide components 33 symmetrically slidably disposed on both sides of the central slide 32. The central slide 32 and guide components 33 are slidably disposed in the adjusting groove 14. The middle part of the spline sleeve 18 rotatably passes through the central slide 32. The bottom wall of the central slide 32 is provided with a follower slide shaft 34. The follower slide shaft 34 is slidably connected to the inclined slide groove 6. The guide components 33 are slidably disposed at both ends of the spline sleeve 18. The two symmetrically disposed guide components 33 are threadedly connected to both ends of the spline sleeve 18. When the cable clamping device 4 drives the adjustable bending mechanism 5 to move along the first direction, the follower slide shaft 34 slides along the inclined slide groove 6. The follower slide shaft 34 is limited and guided by the inclined slide groove 6, and can move along the first direction simultaneously. Simultaneously, displacement is generated along the second direction. The follower slide shaft 34 drives the adjustable bending mechanism 5 to generate displacement along the second direction through the spline sleeve 18. The follower switching wear resistance testing mechanism 7 includes a lifting slide 35 slidably mounted on the upper wall of the machine base 1 and a testing component 36 slidably mounted on the lifting slide 35. The lifting slide 35 is arranged in a U-shape. The sliding direction of the lifting slide 35 is parallel to the sliding direction of the cable clamping device 4. A bending connecting rod 37 is provided between the testing component 36 and the two guide components 33. One end of the bending connecting rod 37 is rotatably connected to the guide component 33. The other end of the two bending connecting rods 37 is rotatably connected to a sliding sleeve 75. The sliding sleeve 75 is slidably connected to the follower switching wear resistance testing mechanism 7.

[0061] In this embodiment, the upper wall of the machine base 1 is provided with a second guide slide rail 38 that is parallel to the clamping base 9, and the bottom end of the lifting slide 35 is provided with a guide slide seat 39 that is adapted to the second guide slide rail 38. The guide slide seat 39 is slidably connected to the second guide slide rail 38, and the lifting slide 35 is slidably disposed on the upper wall of the machine base 1 through the guide slide seat 39 and the second guide slide rail 38.

[0062] See Figures 5-13The guide assembly 33 includes a guide frame 40, an adjusting screw 42, and a guide screw seat 43. The guide screw seat 43 is slidably disposed in the adjusting groove 14. The inner wall of the adjusting groove 14 is provided with a guide slide rail 44 along its length. The side wall of the guide screw seat 43 is slidably connected to the guide slide rail 44. The spline sleeve 18 slidably passes through the guide screw seat 43. The thread on the outer wall of the spline sleeve 18 is threadedly connected to the guide screw seat 43. The guide screw seats 43 of the two guide assemblies 33 are respectively threadedly connected to both ends of the spline sleeve 18. The guide frame 40 is located at the upper end of the guide screw seat 43. The guide frame 40 contains two sets of guide roller assemblies 45 arranged symmetrically. The guide roller assemblies 45 are slidably connected to the guide frame 40. The upper wall of the guide frame 40 has an adjustment screw hole 46. The adjustment screw 42 passes through the adjustment screw hole 46. The lower end of the adjustment screw 42 is rotatably connected to the upper guide roller assembly 45. The adjustment screw 42 facilitates the adjustment of the distance between the two guide roller assemblies 45 to accommodate cables of different diameters.

[0063] In this embodiment, the guide roller assembly 45 includes a roller frame and a guide roller. The guide roller is rotatably mounted on the roller frame and is arranged in an hourglass shape. The hourglass-shaped guide roller design can provide radial constraint and centering effect on the cable when it passes through, effectively preventing the cable from lateral slippage or deviation during axial movement.

[0064] like Figures 3-7 As shown, the detection assembly 36 includes a detection frame 47, a switching guide post 48, an adjusting screw 49, and two sets of friction assemblies 50 arranged symmetrically in the upper and lower parts. The detection frame 47 is slidably disposed in the lifting slide 35 in the vertical direction. The switching guide post 48 is horizontally disposed at the bottom end of the detection frame 47 and is parallel to the electric slide table 2. The sliding sleeve 75 is slidably connected to the switching guide post 48. The two sets of friction assemblies 50 are slidably disposed in the detection frame 47 in the vertical direction. An adjusting screw hole 51 is provided on the upper wall of the detection frame 47. The adjusting screw 49 passes through the adjusting screw hole 51 and is threadedly connected to the adjusting screw hole 51. The bottom end of the adjusting screw 49 is rotatably connected to the friction assembly 50 above.

[0065] See Figures 1-7The friction assembly 50 includes a fixed frame 56 and friction columns 57 mounted on the fixed frame 56. The friction columns 57 are detachably mounted on the fixed frame 56 by bolts. The friction parts 8 are equidistantly arranged on the surface of the friction columns 57 along the axial direction. The electric slide table 2 can drive the reciprocating sliding mechanism 3 and the cable clamping device 4 to slide along the first direction. The cable clamping device 4 synchronously drives the adjustable bending mechanism 5 to move along the first direction, thereby causing the clamped cable to contact the friction parts 8 with different roughnesses on the friction columns 57 in sequence. During this process, the bottom end of the adjustable bending mechanism 5 is limited and guided by the inclined slide groove 6, and can move along the first direction while simultaneously displacing along the second direction, thereby adjusting the relative position of the adjustable bending mechanism 5 on the cable clamping device 4, so that different parts of the cable contact different friction parts 8. Thus, in a single continuous test, different sections of the cable can contact friction parts 8 with different roughnesses respectively, realizing the wear resistance test of multiple parts of the cable surface under different friction conditions without repeatedly disassembling and assembling the cable sample.

[0066] like Figures 5-13 As shown, the guide frame 40 is provided with a bidirectional sliding assembly 52, which is located between two guide roller assemblies 45 and drives the two guide roller assemblies 45 to move synchronously in opposite directions. The detection frame 47 is provided with a bidirectional sliding assembly 53, which is located between two friction assemblies 50 and drives the two friction assemblies 50 to move synchronously in opposite directions. The bidirectional sliding assembly 52 includes a gear 54 and racks 55 located on both sides of the gear 54. The gear 54 is rotatably located in the middle of the side wall of the guide frame 40, and the racks 55 mesh with the two sides of the gear 54 respectively. Each rack 55 is fixedly connected to a guide roller assembly 45, thereby allowing the two rollers to move synchronously in opposite directions. When the roller assembly 45 moves, it drives the rack 55 connected to it to move up and down. The rack 55 drives the gear 54 to rotate. The gear 54 further drives the rack 55 on the other side to move in the opposite direction, thereby causing the other guide roller assembly 45 to move in the opposite direction. This achieves synchronous reverse displacement of the two guide roller assemblies 45, ensuring that the cable always stays in the center position of the guide frame 40 during the guiding process, improving centering and stability. The bidirectional sliding assembly 2 53 has the same structure as the bidirectional sliding assembly 1 52. The gear 54 of the bidirectional sliding assembly 2 53 is rotatably located in the middle of the side wall of the detection frame 47. The two racks 55 of the bidirectional sliding assembly 2 53 are respectively connected to the two friction assemblies 50.

[0067] like Figure 2 , Figure 4 and Figure 12As shown, the pre-tension adjustment assembly 11 includes a pre-tension screw 64, a fixing screw seat 65, a pre-tension slide 66, and a tension gauge 67. The fixing screw seat 65 is disposed on the mounting base 10, and the pre-tension slide 66 is slidably disposed on the clamping base 9. The pre-tension slide 66 is disposed on the side of the mounting base 10 near the middle of the clamping base 9. The pre-tension screw 64 slides through the fixing screw seat 65 and is threadedly connected to the fixing screw seat 65. The end of the pre-tension screw 64 is rotatably connected to the pre-tension slide 66. The tension gauge 67 is disposed on the side of the pre-tension slide 66 away from the mounting base 10, and the clamping mechanism 13 is disposed on the side of the tension gauge 67 away from the pre-tension slide 66.

[0068] As shown in Figure 2, Figure 4 , Figure 10 and Figure 11 As shown, the pre-torque adjustment assembly 12 includes a fixed plate 68, an angle sensor 69, a worm 70, and a worm wheel 71. The fixed plate 68 is disposed on the upper wall of the mounting base 10. The upper wall of the fixed plate 68 is provided with a pre-torque cavity 72. The worm 70 and the worm wheel 71 are rotatably disposed in the pre-torque cavity 72, and the worm 70 meshes with the worm wheel 71. The outer wall of the pre-torque cavity 72 is provided with a pre-torque handle that is coaxially fixed to the worm 70. The angle sensor 69 is disposed on the outer wall of the pre-torque cavity 72 and is connected to the worm wheel 71. The clamping mechanism 13 is coaxially fixed to the worm wheel 71.

[0069] like Figure 2 , Figure 14 and Figure 15As shown, the clamping mechanism 13 includes an anti-detachment rod 21, an anti-detachment spring 22, a clamping rod 23, a clamping plate 24, and a clamping sleeve 20 with an opening on one side. The clamping sleeve 20 has multiple anti-detachment grooves 25 arranged in a circumferential array. The anti-detachment grooves 25 extend from the edge of the clamping sleeve 20 near the opening towards the center. The anti-detachment rod 21 has a rotating shaft 26 in the middle. The anti-detachment rod 21 is rotatably disposed in the anti-detachment groove 25 through the rotating shaft 26. One end of the anti-detachment rod 21 away from the opening of the clamping sleeve 20 extends into the clamping sleeve 20, and the other end extends out of the clamping sleeve 20. The anti-detachment spring 22 is disposed between the anti-detachment rod 21 and the clamping sleeve 20. Between them, the anti-detachment spring 22 is used to apply force to the anti-detachment rod 21, pushing the end of the anti-detachment rod 21 away from the opening of the clamping sleeve 20 to rotate towards the central axis of the clamping sleeve 20. The clamping sleeve 20 has through holes 27 symmetrically opened at the end away from the opening. The outer wall of the clamping sleeve 20 is threaded. A sliding sleeve 28 is threadedly connected to the outer side of the clamping sleeve 20. A push sleeve 29 is rotatably connected to the end of the sliding sleeve 28 away from the anti-detachment rod 21. The clamping plate 24 is symmetrically slidably disposed inside the clamping sleeve 20. The clamping plate 24 is disposed between the anti-detachment rod 21 and the closed end of the clamping sleeve 20. The push sleeve 29 is located away from the sliding sleeve 28. One end of the sleeve 28 has a clamping groove 30. One end of the clamping rod 23 is rotatably disposed in the clamping groove 30, and the other end of the clamping rod 23 passes through the through hole 27 and extends into the clamping sleeve 20 and is rotatably connected to the clamping plate 24. The clamping plate 24 has a conductive protrusion 31 on the side near the axis of the clamping sleeve 20. The conductive protrusion 31 can be electrically connected to an external power supply or rated load, which facilitates the testing of the cable's abrasion resistance when the cable is energized. The radial distance from the end of the anti-disengagement rod 21 extending out of the clamping sleeve 20 to the axis of the rotating shaft 26 is greater than the radial distance from the inner wall of the sliding sleeve 28 to the axis of the rotating shaft 26. Therefore, when When the sliding sleeve 28 moves along the clamping sleeve 20 toward the opening and approaches the anti-detachment rod 21, its inner wall will push against the protruding end of the anti-detachment rod 21, forcing the anti-detachment rod 21 to overcome the force of the anti-detachment spring 22 and rotate around the rotating shaft 26, so that its inner end moves away from the central axis of the clamping sleeve 20, thereby releasing the clamped cable. Conversely, when the sliding sleeve 28 moves in the opposite direction, under the reset action of the anti-detachment spring 22, the inner end of the anti-detachment rod 21 rotates toward the central axis again, realizing the axial anti-detachment function. At the same time, the axial movement of the sliding sleeve 28 is converted into the radial sliding of the clamping plate 24 through the clamping rod 23, realizing the clamping or releasing of the cable end.

[0070] The machine tool 1 is equipped with a controller and a display 41 is provided on the side wall of the machine tool 1. The controller is electrically connected to the display 41, the force gauge 67, and the angle sensor 69 respectively. The display 41 is convenient for displaying the detection results of the angle sensor 69 and the force gauge 67.

[0071] In practical use, firstly, clamp both ends of the cable sample in the two clamping mechanisms 13, and insert the cable into the clamping sleeve 20 on one side. Initially, the sliding sleeve 28 is located at the end of the clamping sleeve 20 near the opening. At this time, the sliding sleeve 28 pushes against the protruding end of the anti-detachment rod 21, forcing the anti-detachment rod 21 to overcome the force of the anti-detachment spring 22 and rotate around the rotating shaft 26. This causes the end of the anti-detachment rod 21 that extends into the clamping sleeve 20 to move away from the central axis of the clamping sleeve 20, and the distance between the two clamping plates 24 is at its maximum. The cable end passes through multiple sets of anti-detachment rods 21 and is fed between the two clamping plates 24. Then, the sliding sleeve 28 is screwed on, causing the sliding sleeve 28 to move towards the clamping sleeve 20. As the holding plate 24 moves in the direction of movement, the sliding sleeve 28 pushes the clamping plate 24 radially closer together via the pushing sleeve 29 and the clamping rod 23, thereby clamping the cable end. At the same time, the sliding sleeve 28 releases the pressure on the protruding end of the anti-detachment rod 21. The anti-detachment spring 22 drives the end of the anti-detachment rod 21 that extends into the clamping sleeve 20 to swing towards the central axis of the clamping sleeve 20, making it tightly fit against the cable surface to achieve axial mechanical anti-detachment. Then, after the cable passes through the two guide assemblies 33 and the detection assembly 36, the adjusting screw 42 is rotated, causing the upper guide roller assembly 45 to move downward. When the upper guide roller assembly 45 moves downward, it drives the rack 55 connected to it to move downward. The rack 55 drives the gear 54 to rotate, and the gear 54 further drives the rack 55 on the other side to move upward, thereby causing the other guide roller assembly 45 to move upward. This achieves the two guide roller assemblies 45 moving towards each other and closer together. Adjusting the distance between the upper guide roller assembly 45 and the lower guide roller assembly 45 ensures that the upper and lower guide roller assemblies 45 are in contact with the upper and lower sides of the cable, respectively. This ensures that the cable remains in the center position of the guide frame 40 during the guiding process, improving alignment and stability. Then, rotating the adjusting screw 49 causes the two friction assemblies 50 to move towards each other and closer together through the bidirectional sliding assembly 53, thereby causing the two... The friction column 57 of the friction assembly 50 is attached to the upper and lower sides of the cable, and then the other end of the cable is installed in the clamping mechanism 13 on the opposite side. Initially, the two guide assemblies 33 and the detection assembly 36 are on the same horizontal line, and the cable sample is in a horizontal state. If it is necessary to simulate the tensile state, the pretension screw 64 of the pretension adjustment assembly 11 is turned to push the pretension slide 66 to slide along the clamping base 9, thereby adjusting the distance between the pretension slide 66 and the mounting base 10, so as to apply axial tension to the cable sample to be tested clamped between the two clamping mechanisms 13. By observing the detection value of the tension gauge 67 on the display 41, the target pretension force value is precisely adjusted.To simulate torsional deformation, turning the pre-torsion handle rotates the worm 70, which in turn drives the worm wheel 71 and the clamping mechanism 13 fixed to the worm wheel 71 to rotate slowly, causing the clamped cable sample to undergo torsional deformation. The rotation angle sensor 69 detects the torsion angle in real time and displays it on the display 41. After adjusting to the target value, the pre-torsion handle is stopped. Based on the self-locking characteristic of the worm gear transmission mechanism, the preset torsion state of the cable can be maintained after adjustment, ensuring the stability of the torsion angle during the test. To simulate cable bending, the drive of the linkage mechanism 16 is activated. Motor 63 drives the spline shaft 17 to rotate, which in turn drives the double-headed screw 58 to rotate via gear 61 and gear 62. The double-headed screw 58 rotates in the opposite direction to the spline shaft 17. The spline shaft 17 drives the spline sleeve 18 to rotate, which in turn drives the two guide components 33 to move closer to each other. At the same time, the double-headed screw 58 drives the two mounting seats 10 to move closer to each other. Since the threads on the outer wall of the spline sleeve 18 and the threads on the side wall of the double-headed screw 58 have opposite directions of rotation but the same pitch, the two guide components 33 and the two mounting seats 10 move synchronously in a one-to-one correspondence. The two guide components 33 move towards each other, and the distance between them remains constant, ensuring the synchronicity and equidistant movement. While the cable's bending curvature changes, the cable segment between the clamping points at both ends maintains proper tension, neither too loose nor too tight. The two guide components 33 move towards each other, and the bending connecting rod 37 pushes the detection component 36 upwards along the lifting slide 35, causing the cable between the two guide components 33 to bend. This causes the cable under test to form a bending curvature matching the testing requirements, thus achieving the detection of cable bending conditions. The abrasion resistance test is performed, and then the reciprocating electric push rod 74 is activated. The reciprocating electric push rod 74 drives the reciprocating slide 73 and the cable clamping device 4 mounted on the reciprocating slide 73 to slide back and forth in the second direction. At this time, the adjustable bending mechanism 5 will not move under the limiting action of the follower slide shaft 34 and the inclined slide groove 6. Therefore, the cable clamping device 4 drives the cable to slide back and forth relative to the friction part 8 of the detection component 36. Through the relative friction between the friction part 8 and the cable sheath, the abrasion resistance test of the high-voltage cable sheath is completed, thereby detecting the abrasion resistance of the cable under different working conditions.

[0072] If it is necessary to test the abrasion resistance of the cable under different rough working conditions, stop the reciprocating electric push rod 74, and then start the electric slide table 2. After the electric slide table 2 starts, it can drive the reciprocating sliding mechanism 3 and the cable clamping device 4 to slide along the first direction. The cable clamping device 4 simultaneously drives the adjustable bending mechanism 5 to move along the first direction. During this process, the bottom end of the adjustable bending mechanism 5 is limited and guided by the inclined slide groove 6, and can move along the first direction while simultaneously displacing along the second direction. The movement of the adjustable bending mechanism 5 along the first direction drives the cable to slide relative to the follow-up switching abrasion resistance testing mechanism 7 along the first direction, so that the cable sheath sequentially contacts the follow-up cutting mechanism 7. The friction parts 8 with different roughnesses on the interchangeable abrasion resistance testing mechanism 7 come into contact, realizing the switching of testing conditions. The movement of the adjustable bending mechanism 5 along the second direction can drive the follow-up interchangeable abrasion resistance testing mechanism 7 to slide synchronously along the second direction, thereby adjusting the relative position of the adjustable bending mechanism 5 on the cable clamping device 4, realizing the abrasion resistance testing of the sheath at different axial positions of the high-voltage cable. Through the synchronous movement of the adjustable bending mechanism 5 in the first and second directions, different parts of the cable come into contact with and are tested by friction parts 8 with different roughnesses. Then, the reciprocating electric push rod 74 is restarted to test the abrasion resistance performance of the cable under different roughness conditions, without the need for frequent disassembly and assembly of cable samples.

[0073] If it is necessary to test the abrasion resistance of the cable under energized conditions, the outer sheath of both ends of the cable sample should be stripped before clamping. After clamping, the conductive protrusions 31 of the two clamping mechanisms 13 can be electrically connected to the external power supply and the rated load, respectively.

[0074] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0076] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-voltage cable sheath quality inspection device, comprising a machine base (1), characterized in that: The machine base (1) is symmetrically provided with electric slides (2) on both sides. A reciprocating sliding mechanism (3) is mounted on the moving end of the two electric slides (2). The reciprocating sliding mechanism (3) is perpendicular to the electric slides (2). A cable clamping device (4) is slidably installed on the reciprocating sliding mechanism (3) along its length. An adjustable bending mechanism (5) is slidably installed inside the cable clamping device (4). The sliding direction of the cable clamping device (4) is parallel to the sliding direction of the adjustable bending mechanism (5). An inclined groove (6) is provided on the upper wall of the machine base (1). 6) Located below the cable clamping device (4), the bottom end of the adjustable bending mechanism (5) is slidably connected to the inclined slide groove (6). The sliding frame on the machine base (1) is equipped with a follow-up switching wear resistance testing mechanism (7). The follow-up switching wear resistance testing mechanism (7) is parallel to the electric slide table (2). The follow-up switching wear resistance testing mechanism (7) is provided with multiple friction parts (8) along the length direction of the electric slide table (2). Each friction part (8) has a different surface roughness. The follow-up switching wear resistance testing mechanism (7) is slidably connected to the adjustable bending mechanism (5). The cable clamping device (4) includes a clamping base (9) and a mounting base (10). The clamping base (9) is slidably mounted on the reciprocating sliding mechanism (3). The mounting base (10) is symmetrically slidably mounted on both ends of the upper wall of the clamping base (9). The upper wall of the clamping base (9) is provided with a parallel bidirectional sliding groove (59) and an adjusting groove (14) along the length direction. The bidirectional sliding groove (59) is provided with a bidirectional moving component (15) that drives the two mounting bases (10) to slide synchronously in opposite directions. The adjustable bending mechanism (5) is slidably mounted in the adjusting groove (14). A linkage mechanism (16) is provided between the bidirectional moving component (15) and the adjustable bending mechanism (5). The linkage mechanism (16) includes a spline shaft (17), a spline sleeve (18), and a transmission assembly (19). The spline shaft (17) is rotatably disposed in the adjustment groove (14), and the spline sleeve (18) is slidably disposed on the outside of the spline shaft (17). The spline shaft (17) and the spline sleeve (18) cooperate with each other. The outer peripheral wall of the spline shaft (17) is machined with evenly distributed key teeth, and the inner peripheral wall of the spline sleeve (18) is correspondingly provided with key grooves. The spline shaft (17) and the spline sleeve (18) form a sliding guide fit through the meshing of key teeth and key grooves. The two ends of the circumferential sidewall of the spline sleeve (18) are symmetrically provided with threads of opposite directions. The adjustable bending mechanism (5) is threadedly connected to both ends of the spline sleeve (18). The transmission assembly (19) is disposed between the spline shaft (17) and the bidirectional moving assembly (15). The adjustable bending mechanism (5) includes a central slide (32) and guide components (33) symmetrically slidably disposed on both sides of the central slide (32). The central slide (32) and guide components (33) are slidably disposed in the adjustment groove (14). The middle part of the spline sleeve (18) rotates through the central slide (32). The bottom wall of the central slide (32) is provided with a follower slide shaft (34). The follower slide shaft (34) is slidably connected to the inclined slide groove (6). The guide components (33) are slidably disposed at both ends of the spline sleeve (18). The two symmetrically disposed guide components (33) are threadedly connected to both ends of the spline sleeve (18). The follower switching wear resistance testing machine The structure (7) includes a lifting slide (35) slidably mounted on the upper wall of the machine base (1) and a detection component (36) slidably mounted on the lifting slide (35). The lifting slide (35) is arranged in a U-shape. The sliding direction of the lifting slide (35) is parallel to the sliding direction of the cable clamping device (4). The detection component (36) and the two guide components (33) are respectively provided with a bending connecting rod (37). One end of the bending connecting rod (37) is rotatably connected to the guide component (33). The other end of the two bending connecting rods (37) is rotatably connected to a sliding sleeve (75). The sliding sleeve (75) is slidably connected to the follow-up switching wear resistance detection mechanism (7).

2. The high-voltage cable sheath quality testing device according to claim 1, characterized in that: The cable clamping device (4) further includes a pre-tension adjustment component (11), a pre-torsion adjustment component (12), and two clamping mechanisms (13) arranged opposite to each other. The pre-tension adjustment component (11) and the pre-torsion adjustment component (12) are respectively located above the two mounting bases (10), and the two clamping mechanisms (13) are respectively located at the ends of the pre-tension adjustment component (11) and the pre-torsion adjustment component (12).

3. The high-voltage cable sheath quality testing device according to claim 2, characterized in that: The clamping mechanism (13) includes a release rod (21), a release spring (22), a clamping rod (23), a clamping plate (24), and a clamping sleeve (20) with an opening on one side. The clamping sleeve (20) has multiple release grooves (25) arranged in a circumferential array. The release grooves (25) extend from the edge of the clamping sleeve (20) near the opening towards the center. The release rod (21) has a rotating shaft (26) in the middle. The release rod (21) is rotatably disposed in the release groove (25) through the rotating shaft (26). The end of the release rod (21) away from the opening of the clamping sleeve (20) extends into the clamping sleeve (20), and the other end extends out of the clamping sleeve (20). The release spring (22) is disposed between the release rod (21) and the clamping sleeve (20). The clamping sleeve (20) has through holes (2) symmetrically opened at the end away from the opening. 7) The outer wall of the clamping sleeve (20) is threaded, and the outer side of the clamping sleeve (20) is threaded with a sliding sleeve (28). The end of the sliding sleeve (28) away from the anti-disengagement rod (21) is rotatably connected with a push sleeve (29). The clamping plate (24) is symmetrically slidably disposed in the clamping sleeve (20). The clamping plate (24) is disposed between the anti-disengagement rod (21) and the closed end of the clamping sleeve (20). The end of the push sleeve (29) away from the sliding sleeve (28) is provided with a clamping groove (30). One end of the clamping rod (23) is rotatably disposed in the clamping groove (30). The other end of the clamping rod (23) passes through the through hole (27) and extends into the clamping sleeve (20) and is rotatably connected with the clamping plate (24). The side of the clamping plate (24) near the axis of the clamping sleeve (20) is provided with a conductive protrusion (31).

4. The high-voltage cable sheath quality testing device according to claim 3, characterized in that: The guide assembly (33) includes a guide frame (40), an adjusting screw (42), and a guide screw seat (43). The guide screw seat (43) is slidably disposed in the adjusting groove (14). The inner wall of the adjusting groove (14) is provided with a guide slide rail (44) along the length direction. The side wall of the guide screw seat (43) is slidably connected to the guide slide rail (44). The spline sleeve (18) slidably passes through the guide screw seat (43). The thread on the outer wall of the spline sleeve (18) is threadedly connected to the guide screw seat (43). The two guide assemblies (33) guide each other. The screw seat (43) is threaded to both ends of the spline sleeve (18). The guide frame (40) is located at the upper end of the guide screw seat (43). The guide frame (40) is provided with two sets of guide roller assemblies (45) arranged symmetrically in the upper and lower parts. The guide roller assembly (45) is slidably connected to the guide frame (40). The upper wall of the guide frame (40) is provided with an adjustment screw hole (46). The adjustment screw (42) passes through the adjustment screw hole (46). The lower end of the adjustment screw (42) is rotatably connected to the upper guide roller assembly (45).

5. The high-voltage cable sheath quality testing device according to claim 4, characterized in that: The detection assembly (36) includes a detection frame (47), a switching guide post (48), an adjusting screw (49), and two sets of friction assemblies (50) arranged symmetrically in the upper and lower parts. The detection frame (47) is slidably mounted vertically within the lifting slide (35). The switching guide post (48) is horizontally mounted at the bottom of the detection frame (47) and is parallel to the electric slide table (2). The sliding sleeve (75) is slidably connected to the switching guide post (48). The two sets of friction assemblies (50) are slidably mounted vertically within the detection frame (47). The upper wall of the measuring frame (47) is provided with an adjustment screw hole (51). The adjustment screw (49) passes through the adjustment screw hole (51) and is threadedly connected to the adjustment screw hole (51). The bottom end of the adjustment screw (49) is rotatably connected to the friction assembly (50) above. The friction assembly (50) includes a fixed frame (56) and a friction column (57) installed on the fixed frame (56). The friction column (57) is detachably installed on the fixed frame (56) by bolts. The friction part (8) is equidistantly arranged on the surface of the friction column (57) along the axial direction.

6. The high-voltage cable sheath quality inspection device according to claim 5, characterized in that: The guide frame (40) is provided with a bidirectional sliding component one (52), which is located between two guide roller assemblies (45) and drives the two guide roller assemblies (45) to move synchronously in opposite directions. The detection frame (47) is provided with a bidirectional sliding component two (53), which is located between two friction assemblies (50) and drives the two friction assemblies (50) to move synchronously in opposite directions. The bidirectional sliding component one (52) includes a gear (54) and components located on both sides of the gear (54). The rack (55) and the gear (54) are rotatably disposed in the middle of the side wall of the guide frame (40). The rack (55) meshes with the two sides of the gear (54) respectively. Each rack (55) is fixedly connected to a guide roller assembly (45). The bidirectional sliding assembly two (53) has the same structure as the bidirectional sliding assembly one (52). The gear (54) of the bidirectional sliding assembly two (53) is rotatably disposed in the middle of the side wall of the detection frame (47). The two racks (55) of the bidirectional sliding assembly two (53) are respectively connected to two friction assemblies (50).

7. The high-voltage cable sheath quality testing device according to claim 6, characterized in that: The pre-tension adjustment assembly (11) includes a pre-tension screw (64), a fixed screw seat (65), a pre-tension slide (66), and a tension gauge (67). The fixed screw seat (65) is mounted on the mounting base (10), and the pre-tension slide (66) is slidably mounted on the clamping base (9). The pre-tension slide (66) is located on the side of the mounting base (10) near the middle of the clamping base (9). The pre-tension screw (64) slides through the fixed screw seat (65) and is threadedly connected to the fixed screw seat (65). The end of the pre-tension screw (64) is rotatably connected to the pre-tension slide (66). The tension gauge (67) is located on the side of the pre-tension slide (66) away from the mounting base (10). The clamping mechanism (13) is located on the tension gauge (67). On the side away from the pre-tension slide (66), the pre-torsion adjustment assembly (12) includes a fixed plate (68), an angle sensor (69), a worm (70) and a worm wheel (71). The fixed plate (68) is located on the upper wall of the mounting base (10). The upper wall of the fixed plate (68) is provided with a pre-torsion cavity (72). The worm (70) and the worm wheel (71) are rotatably located in the pre-torsion cavity (72). The worm (70) meshes with the worm wheel (71). The outer wall of the pre-torsion cavity (72) is provided with a pre-torsion handle that is coaxially fixed to the worm (70). The angle sensor (69) is located on the outer wall of the pre-torsion cavity (72). The angle sensor (69) is connected to the worm wheel (71). The clamping mechanism (13) is coaxially fixed to the worm wheel (71).

8. The high-voltage cable sheath quality testing device according to claim 7, characterized in that: The reciprocating sliding mechanism (3) includes a reciprocating slide (73) and a reciprocating electric push rod (74) disposed in the reciprocating slide (73). The two ends of the reciprocating slide (73) are disposed on two electric slide tables (2). The clamping base (9) is slidably disposed in the reciprocating slide (73). The reciprocating electric push rod (74) is disposed between the reciprocating slide (73) and the clamping base (9).

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