A rotating lifting mechanism and detection method for high-voltage cable detection

Abstract

The present invention relates to the technical field of high-voltage cable detection, and in particular to a rotating lifting mechanism and detection method for high-voltage cable detection, comprising a frame and a cable body, wherein an equipment room is fixedly installed on the frame, a driving screw and a torsion detection shaft are rotatably installed through the equipment room, the driving screw is located at the outer end of the equipment room and is equipped with a movable nut, and a limited position chamber is fixedly connected to the movable nut. The present invention first allows the cable body to be located between a vertical long block and a second movable block, and then the cable body is wound around the torsion detection shaft, so that the cable body between the vertical long block and the second movable block can be subjected to bending detection by driving the second movable block to move up and down in a straight line, and the torsion detection shaft can be driven to rotate continuously to perform torsion detection on the cable body on the torsion detection shaft, and thus the cable body can be subjected to bending detection and torsion detection in turn without the need to move the cable body.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage cable detection, and in particular to a rotating lifting mechanism and a detection method for high-voltage cable detection. Background Art

[0002] High-voltage cable is a type of power cable, which refers to a power cable used to transmit power between 1kv-1000kv. It is mostly used in power transmission and distribution. The components of high-voltage cable from the inside to the outside include: conductor, insulation, inner sheath, filler (armor), and outer insulation. Armored high-voltage cable is mainly used for underground burial, which can withstand high-intensity compression on the ground and prevent damage from other external forces.

[0003] The existing technology mostly adopts a high-voltage cable online tension detector disclosed in announcement number CN107328513B, which includes a connecting base, a cable clamp and a cable ring; the cable clamp and the cable ring are both fixed on the connecting base; the cable ring is symmetrically arranged on both sides of the cable clamp, and the cable clamp and the cable ring are provided with cable holes for the cables to pass through; the vertical height of the cable hole on the cable clamp relative to the connecting base is higher than the height of the cable holes on the cable rings on both sides; the connecting base is also provided with an inclination sensor and a pressure sensor; the high-voltage cable online tension detector of this technology has a simple structure and is easy to operate, but the above technology still has problems during use due to structural limitations:

[0004] During the overall tension test of the high-voltage cable, the fatigue strength of the outer insulation layer of the high-voltage cable in a stretched state is also tested. Since the high-voltage cable is in a bent and twisted state during laying, in order to understand the fatigue strength of the outer insulation layer of the high-voltage cable in the bent and twisted state, it is necessary to perform bending and twisting tests on the outer insulation layer of the high-voltage cable. However, in the prior art, since the bending detection device and the twisting detection device are both single-body devices, the high-voltage cable needs to be moved to the bending detection device and the twisting detection device in turn for testing. This transportation process undoubtedly delays the testing speed, which is not conducive to quickly completing the bending and twisting tests on the outer insulation layer of the high-voltage cable. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that high-voltage cables need to be moved to a bending detection device and a torsion detection device in sequence for detection, and to propose a rotating lifting mechanism and a detection method for high-voltage cable detection.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A rotary lifting mechanism for high-voltage cable detection comprises a frame and a cable body, a wire pay-off drum for placing the cable body is rotatably mounted on the frame, an equipment room is fixedly mounted on the frame, a driving screw and a torsion detection shaft are rotatably mounted through the equipment room, one end of the driving screw and one end of the torsion detection shaft extend to the inner end of the equipment room, and the other end of the driving screw and the other end of the torsion detection shaft are located at the outer end of the equipment room, the driving screw is matched with a moving nut mounted on the outer end of the equipment room, a limited position chamber is fixedly connected to the moving nut, a limited position chamber is provided in the limited position chamber, and the cross section of the limited position chamber is composed of an incomplete circular ring at the middle end and rectangles at the two ends, and a plurality of first rotating cylinders for facilitating the movement of the cable body are rotatably mounted at both upper and lower ends of the limited position chamber;

[0008] A first arc-shaped clamp is fixedly connected to the lower end of the left rectangle of the limit chamber cross section, and a second arc-shaped clamp is slidably provided at the upper end of the left rectangle of the limit chamber cross section, and three transition cylinders for guiding the movement of the cable body are rotatably provided at the right rectangle of the limit chamber cross section, and the three transition cylinders are distributed in a triangle, the limit chamber is located below the transition cylinder and is fixedly connected to a circular ring limit shell, and a plurality of second rotating cylinders for facilitating the movement of the cable body are rotatably installed on one side of the circular ring limit shell, and the three transition cylinders cooperate with a circular ring limit shell to allow the cable body to be close to the lower end of the torsion detection shaft;

[0009] The frame is fixedly connected with a vertical long block on the side away from the driving screw, and a right-angle sliding hole is opened in the vertical long block for guiding the cable body. The frame is movably provided with a first movable block and a second movable block slidably connected to the first movable block on the side away from the driving screw. The first movable block and the second movable block both have vertical sliding holes. Two third arc clamping members are slidably provided on the upper end of the second movable block. When the driving screw rotates continuously and the torsion detection shaft rotates intermittently, the cable body located in the circular limit shell is wound around the torsion detection shaft in an interval manner. When the lead screw stops rotating and the torsion detection shaft continues to rotate, the cable body wound on the torsion detection shaft is subjected to torsion detection, and after the first movable block and the second movable block successively move linearly upward and linearly to the right, the first movable block and the second movable block then reciprocate linearly up and down to perform bending detection on the cable body located between the right-angle sliding hole and the vertical sliding hole, a switching mechanism is provided in the equipment room, and the switching mechanism is used to switch the rotation state of the driving lead screw and the torsion detection shaft, and the frame is provided with a driving mechanism, and the driving mechanism is used to drive the first movable block and the second movable block to move linearly;

[0010] The switching mechanism includes a driving motor fixedly installed at the indoor end of the equipment, a first telescopic rod fixedly connected to the output end of the driving motor is rotatably installed at the indoor end of the equipment, the driving screw is located at the indoor end of the equipment and is fixedly connected to a rotating shaft, the torsion detection shaft is located at the indoor end of the equipment and is fixedly connected to a second telescopic rod, the first telescopic rod and the second telescopic rod are both composed of a fixed end and a telescopic end, the telescopic end of the first telescopic rod is fixedly connected to a first driving gear and a first rotating gear, the rotating shaft is fixedly connected to a rotating member and a second driving gear meshed with the first driving gear, the rotating member is an incomplete disc structure, and the rotating member has an arc end and a non-arc end, the telescopic end of the second telescopic rod is fixedly installed with a groove wheel member and a second rotating gear meshed with the first rotating gear;

[0011] The switching mechanism also includes a first vertical rod, a second vertical rod, a third vertical rod and a fourth vertical rod fixedly installed at the upper end of the equipment room, the first vertical rod, the second vertical rod, the third vertical rod and the fourth vertical rod are all composed of a vertical rod end and a disc end, the first vertical rod disc end, the second vertical rod disc end, the third vertical rod disc end and the fourth vertical rod disc end are all provided with a sliding circular groove, the first vertical rod disc end and the fourth vertical rod disc end are all provided with a transverse long hole, one end of the first driving gear and one end of the first rotating gear are respectively integrally formed with a first sliding rod and a second sliding rod, and two ends of the second rotating gear are respectively integrally formed with a third sliding rod and a fourth sliding rod;

[0012] The switching mechanism further includes an avoidance circular groove provided on the sheave member, the avoidance circular groove is used to avoid the arc end of the rotating member, the sheave member is provided with a movable slide groove, the non-arc end of the rotating member is fixedly connected with a movable lever, the movable lever is integrally formed with a movable convex rod, and the movable convex rod is intermittently movably sleeved in the movable slide groove;

[0013] The first vertical rod is located between the driving motor and the first driving gear, the second vertical rod is located between the groove wheel part and the second rotating gear, the third vertical rod and the fourth vertical rod correspond to the second sliding rod and the fourth sliding rod respectively, the telescopic end of the first telescopic rod and the telescopic end of the second telescopic rod are respectively movably sleeved in the transverse long hole of the first vertical rod and the transverse long hole of the second vertical rod, when the first driving gear is meshed with the second driving gear, the first sliding rod and the third sliding rod are respectively movably sleeved in the sliding circular groove of the first vertical rod and the sliding circular groove of the second vertical rod, when the first rotating gear is meshed with the second rotating gear, the second sliding rod and the fourth sliding rod are respectively movably sleeved in the sliding circular groove of the third vertical rod and the sliding circular groove of the fourth vertical rod.

[0014] Preferably, a vertical groove of a clamping member is opened at the upper end of the left rectangle of the limit chamber cross-section, and the second arc-shaped clamping member is slidably sleeved in the vertical groove of the clamping member. A first clamping hydraulic cylinder is fixedly connected in the vertical groove of the clamping member, and the output end of the first clamping hydraulic cylinder is fixedly connected to the second arc-shaped clamping member. The first arc-shaped clamping member cooperates with the second arc-shaped clamping member to clamp the cable body located at the left rectangle of the limit chamber cross-section, and a horizontal mounting plate is fixedly connected to the right rectangle of the limit chamber cross-section, and the three transition cylinders are rotatably mounted on the horizontal mounting plate.

[0015] Preferably, two fixed square grooves and two clamping member transverse grooves are provided on the upper end of the second movable block, a square long rod slidably sleeved in the fixed square groove is fixedly connected to the upper end of the first movable block, the two clamping member transverse grooves are respectively fixedly connected to the second clamping hydraulic cylinder, the two third arc-shaped clamping members are respectively slidably sleeved in the two clamping member transverse grooves, and the two third arc-shaped clamping members are respectively fixedly connected to the output ends of the two second clamping hydraulic cylinders, and the two third arc-shaped clamping members cooperate to clamp the cable body located in the vertical sliding hole of the second movable block.

[0016] Preferably, the driving mechanism comprises a first vertical drive, a transverse drive and a second vertical drive which are arranged on the frame, wherein the first vertical drive is composed of a first vertical track and a first pushing cylinder located in the first vertical track, and the transverse drive is composed of a transverse track and a second pushing cylinder located in the transverse track;

[0017] The second vertical drive consists of a second vertical rail and a third pushing cylinder located in the second vertical rail, the lower end of the first vertical rail is fixedly connected to the frame, the transverse rail is slidably sleeved in the first vertical rail, and the output end of the first pushing cylinder is fixedly connected to the transverse rail, the second vertical rail is slidably sleeved in the transverse rail, and the output end of the second pushing cylinder is fixedly connected to the second vertical rail, the first movable block is slidably sleeved in the second vertical rail, and the output end of the third pushing cylinder is fixedly connected to the first movable block.

[0018] A method for detecting a rotating lifting mechanism for high-voltage cable detection comprises the following steps:

[0019] Step S1: First, the cable body at the pay-off drum passes through the limit chamber, and then guides the cable body into the circular limit shell, so that the cable body in the circular limit shell is in close contact with the lower end of the torsion detection shaft, and then the cable body passes through the vertical long block, the first movable block and the second movable block in sequence, and the cable body at the vertical sliding hole of the second movable block is clamped by two third arc-shaped clamping members;

[0020] Step S2: Start the first push cylinder to make the first movable block and the second movable block move straight upward, then start the second push cylinder to make the first movable block and the second movable block move straight rightward, so that the cable body between the right-angle sliding hole and the vertical sliding hole of the second movable block is in a pre-bent state;

[0021] Step S3: Then, the torsion detection shaft is intermittently rotated, and under the cooperation of the linear movement of the moving nut, the cable body in the circular limit shell is wound around the torsion detection shaft in an interval manner, and the second arc clamping member cooperates with the first arc clamping member to clamp the cable body at the left end rectangle of the limit chamber cross section;

[0022] Step S4: by separating the first driving gear from the second driving gear, separating the rotating member from the grooved wheel member, and meshing the first rotating gear with the second rotating gear, and starting the driving motor, the second rotating gear drives the torsion detection shaft to rotate continuously, so that the cable body at the right-angle sliding hole is wound around the torsion detection shaft, and at the same time, the second movable block is in close contact with the first movable block, and the cable body between the right-angle sliding hole and the vertical sliding hole of the second movable block is tightened, and the cable body on the torsion detection shaft is also in a tightened state;

[0023] Step S5: Then, the third push cylinder is started to make the first movable block and the second movable block move up and down in a straight line, so as to perform bending detection on the cable body between the right-angle sliding hole and the vertical sliding hole of the second movable block until fatigue damage occurs on the outer insulation layer of the cable body, thereby completing the bending detection;

[0024] Step S6: After the bending test is completed, the torsion detection shaft is allowed to rotate continuously to perform torsion detection on the cable body on the torsion detection shaft until fatigue damage occurs to the outer insulation layer of the cable body, thereby completing the torsion detection.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The present invention first places the cable body between the vertical long block and the second movable block, and then winds the cable body around the torsion detection shaft. The second movable block can be driven to move up and down reciprocatingly to perform bending detection on the cable body between the vertical long block and the second movable block, and the torsion detection shaft can be driven to rotate continuously to perform torsion detection on the cable body on the torsion detection shaft. Therefore, the cable body can be subjected to bending detection and torsion detection in turn without being moved, and the detection speed of the cable body can be improved.

[0027] 2. The present invention switches the rotation states of the driving screw and the torsion detection shaft, and first allows the cable body to be wound around the torsion detection shaft in an interval manner to avoid friction damage to the outer insulation layer of the cable body due to the narrow interval during torsion detection. The cable body wound around the torsion detection shaft is then placed in a taut state, and at the same time, the cable body located between the vertical long block and the second movable block is placed in a taut state, so that the cable body can complete bending detection and torsion detection in sequence in a taut state. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0029] Figure 2 A schematic cross-sectional view of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention Figure 1 ;

[0030] Figure 3 It is a right sectional schematic diagram of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0031] Figure 4 A schematic diagram of the switching mechanism structure of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0032] Figure 5 A schematic diagram of the structure of the first vertical rod and the third vertical rod of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of a first rotating gear and a first driving gear of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0034] Figure 7 A schematic diagram of the structure of a sheave member and a second rotating gear of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention;

[0035] Figure 8 A schematic diagram of the structure of a rotating member and a sheave member of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention;

[0036] Fig. 9 A schematic top view of a switching mechanism when a torsion detection shaft of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention performs intermittent rotation;

[0037] Fig.10 A schematic top view of a switching mechanism when a torsion detection shaft of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention is continuously rotating;

[0038] Fig.11This is a schematic diagram of the structure of a limit chamber of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0039] Fig.12 It is a front cross-sectional schematic diagram of a limit chamber of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention;

[0040] Fig.13 It is a vertical long block front cross-sectional schematic diagram of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention;

[0041] Fig.14 It is a front cross-sectional schematic diagram of a limit chamber when the cable body of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention is located in a circular limit shell;

[0042] Fig.15 A schematic cross-sectional view of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention Figure 2 ;

[0043] Fig.16 This is a structural schematic diagram of a first movable block and a second movable block of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention;

[0044] Fig.17 This is a structural schematic diagram of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention, in which the first movable block and the second movable block are located at the lower end of the first vertical driver;

[0045] Fig.18 This is a structural schematic diagram of a rotating lifting mechanism for high-voltage cable detection proposed by the present invention, in which the first movable block and the second movable block are located at the upper right end of the first vertical driver;

[0046] Fig.19 This is a structural schematic diagram of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention when the cable body is located in a right-angle sliding hole and a vertical sliding hole;

[0047] Fig. 20 This is a structural schematic diagram of a rotary lifting mechanism for high-voltage cable detection proposed by the present invention when the cable body is wound around a torsion detection shaft.

[0048] In the figure: 1, frame; 2, wire drum; 3, equipment room; 4, driving screw; 5, torsion detection shaft; 6, moving nut; 7, limit chamber; 8, limit chamber; 9, first rotating cylinder; 10, first arc clamping member; 11, second arc clamping member; 12, transition cylinder; 13, circular ring limit shell; 14, second rotating cylinder; 15, vertical long block; 16, right-angle sliding hole; 17, first movable block; 18, second movable block; 19, vertical sliding hole; 20, third arc clamping member; 21, horizontal mounting plate; 22, fixed square groove; 23, square long rod; 24, driving motor; 25, first telescopic rod; 26, rotating shaft ; 27. Second telescopic rod; 28. First driving gear; 29. ​​First rotating gear; 30. Rotating member; 31. Second vertical driver; 32. Second driving gear; 33. Groove member; 34. Second rotating gear; 35. First vertical rod; 36. Second vertical rod; 37. Third vertical rod; 38. Fourth vertical rod; 39. Sliding circular groove; 40. Horizontal long hole; 41. First sliding rod; 42. Second sliding rod; 43. Third sliding rod; 44. Fourth sliding rod; 45. Avoiding circular groove; 46. Movable sliding groove; 47. Movable lever; 48. Moving protruding rod; 49. First vertical driver; 50. Horizontal driver. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] Reference Figure 1-Figure 20 A rotating lifting mechanism and a detection method for high-voltage cable detection include a frame 1 and a cable body. A pay-off drum 2 for placing the cable body is rotatably installed on the frame 1. When not being detected, the cable body is first wound around the pay-off drum 2 for subsequent use. An equipment room 3 is fixedly installed on the frame 1. A driving screw 4 and a torsion detection shaft 5 are rotatably installed through the equipment room 3. One end of the driving screw 4 and one end of the torsion detection shaft 5 extend to the inner end of the equipment room 3, and the other end of the driving screw 4 and the other end of the torsion detection shaft 5 are located at the outer end of the equipment room 3. The driving screw 4 is located at the outer end of the equipment room 3 and is equipped with a movable nut 6, as shown in the attached Figure 3 As shown in the figure, a transverse guide groove is provided on the frame 1 below the moving nut 6, and a sliding long rod slidably sleeved in the transverse guide groove is provided at the lower end of the moving nut 6 to guide the linear movement of the moving nut 6, and a limit chamber 7 is fixedly connected to the moving nut 6, and a limit chamber 8 is provided in the limit chamber 7, and the cross section of the limit chamber 8 is composed of an incomplete circular ring at the middle end and rectangles at both ends, as shown in the attached Fig.11 and attached Fig.12As shown, a plurality of first rotating cylinders 9 for facilitating the movement of the cable body are rotatably installed at both ends of the limit chamber 8, and an opening communicating with the limit chamber 8 is opened on one side of the limit chamber 7. When the cable body passes into the limit chamber 8, the cable body is pulled through the opening, and at the same time, with the assistance of the plurality of first rotating cylinders 9, the cable body is allowed to quickly pass out of the limit chamber 8;

[0051] A first arc-shaped clamping member 10 is fixedly connected to the lower end of the left rectangular section of the limiting chamber 8, and a second arc-shaped clamping member 11 is slidably arranged at the upper end of the left rectangular section of the limiting chamber 8, as shown in the attached Fig.12 As shown, when the second arc-shaped clamping member 11 moves downward, it cooperates with the first arc-shaped clamping member 10 and clamps the cable body at the rectangular portion at the left end of the cross section of the limiting chamber 8. The rectangular portion at the right end of the cross section of the limiting chamber 8 is rotatably provided with three transition cylinders 12 for guiding the movement of the cable body, and the three transition cylinders 12 are distributed in a triangular shape. The limiting chamber 7 is located below the transition cylinder 12 and is fixedly connected with a circular limiting shell 13, as shown in the attached Fig.12 As shown, a plurality of second rotating cylinders 14 for facilitating the movement of the cable body are rotatably installed on one side of the circular limiting shell 13, and an opening communicating with the inside of the circular limiting shell 13 is opened at the outer end of the circular limiting shell 13. When the cable body passes into the circular limiting shell 13, the cable body is pulled through the opening, and with the assistance of the plurality of second rotating cylinders 14, the cable body is allowed to pass out of the circular limiting shell 13, and the cable body located in the circular limiting shell 13 is closely attached to the lower end of the torsion detection shaft 5;

[0052] In particular, the attached Fig.12 and attached Fig.14 As shown, after the cable body passes through the limiting chamber 8, the lower end of the cable body is sequentially mounted on the middle transition tube 12, the upper transition tube 12 and the lower transition tube 12, and the cable body is guided into the annular limiting shell 13;

[0053] Preferably, a vertical long block 15 is fixedly connected to the side of the frame 1 away from the driving screw 4, and a right-angle sliding hole 16 for guiding the cable body is opened in the vertical long block 15. Fig.14As shown, the right-angle sliding hole 16 consists of a horizontal end and a vertical end, and an opening communicating with the right-angle sliding hole 16 can be opened on the outside of the vertical long block 15. When the cable body passes through the horizontal end of the right-angle sliding hole 16, the cable body is pulled through the opening to allow the cable body to quickly pass through the vertical end of the right-angle sliding hole 16, and the vertical end of the right-angle sliding hole 16 is used to allow the cable body located at the vertical end of the right-angle sliding hole 16 to be in a vertical state, and the frame 1 is movably provided with a first movable block 17 and a second movable block 18 slidably connected to the first movable block 17 on the side away from the driving screw 4, and the first movable block 17 and the second movable block 18 are both provided with a vertical sliding hole 19, and then the cable body is passed through the vertical sliding hole 19, and the two third arc-shaped clamping members 20 are relatively moved close to each other to clamp the cable body at the vertical sliding hole 19 of the second movable block 18;

[0054] As attached Fig.18 As shown, the first movable block 17 and the second movable block 18 are first moved linearly upward and linearly rightward in sequence, so that the cable body in the vertical end of the right-angle sliding hole 16 and the cable body in the vertical sliding hole 19 are not on the same vertical line, and the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 is in a pre-bent state;

[0055] Preferably, when the lead screw 4 is driven to rotate continuously and the torsion detection shaft 5 is rotated intermittently, the movable nut 6 drives the limit chamber 7 to move linearly to change the contact point between the cable body in the annular limit shell 13 and the torsion detection shaft 5. At the same time, the torsion detection shaft 5 rotates intermittently, so that the cable body in the annular limit shell 13 is wound around the torsion detection shaft 5 in an interval manner, so as to avoid friction damage of the outer insulation layer of the cable body due to the narrow spacing during torsion detection, so as to reduce the error during torsion detection;

[0056] When the driving screw 4 stops rotating and the torsion detection shaft 5 continues to rotate, the cable body wound on the torsion detection shaft 5 is first placed in a straight state, and then the first movable block 17 and the second movable block 18 are moved up and down in a straight line to perform a bending detection on the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19, and then the torsion detection shaft 5 is continuously rotated to perform a torsion detection on the cable body wound on the torsion detection shaft 5, and a switching mechanism is provided in the equipment room 3, which is used to switch the rotation states of the driving screw 4 and the torsion detection shaft 5, and the frame 1 is provided with a driving mechanism, which is used to drive the first movable block 17 and the second movable block 18 to move in a straight line.

[0057] Preferably, as attached Fig.11 and attached Fig.12As shown, a vertical groove for a clamping member is provided at the upper end of the left rectangle of the cross-section of the limiting chamber 8, and the second arc-shaped clamping member 11 is slidably mounted in the vertical groove of the clamping member. A first clamping hydraulic cylinder is fixedly connected in the vertical groove of the clamping member, and the second arc-shaped clamping member 11 is moved downward through the output end of the first clamping hydraulic cylinder, so that the first arc-shaped clamping member 10 cooperates with the second arc-shaped clamping member 11 to clamp the cable body located at the left rectangle of the cross-section of the limiting chamber 8, and a horizontal mounting plate 21 is fixedly connected to the right rectangle of the cross-section of the limiting chamber 8, and three transition cylinders 12 are rotatably mounted on the horizontal mounting plate 21.

[0058] Preferably, as attached Fig.16 As shown, two fixed square grooves 22 and two clamping member transverse grooves are provided at the upper end of the second movable block 18, a square long rod 23 slidably sleeved in the fixed square groove 22 is fixedly connected to the upper end of the first movable block 17, and the inner wall of the fixed square groove 22 and the outer wall of the square long rod 23 are treated to increase the roughness to prevent the second movable block 18 from automatically falling due to gravity, and the two clamping member transverse grooves are respectively fixedly connected to the second clamping hydraulic cylinders, and two third arc-shaped clamping members 20 are respectively slidably sleeved in the two clamping member transverse grooves, and the two third arc-shaped clamping members 20 are respectively driven by the output ends of the two second clamping hydraulic cylinders to clamp the cable body located in the vertical sliding hole 19 of the second movable block 18.

[0059] It is particularly noted that after the cable body is wound around the torsion detection shaft 5, as shown in the attached Fig. 20 As shown, the right end of the cable body wound on the torsion detection shaft 5 is in a straightened state under the clamping of the second arc clamping member 11 and the first arc clamping member 10, and then the torsion detection shaft 5 is continuously rotated, so that the left end of the cable body wound on the torsion detection shaft 5 pulls the second movable block 18 to move downward, and the left end of the cable body wound on the torsion detection shaft 5 is in a straightened state, and then the right end and the left end of the cable body wound on the torsion detection shaft 5 are in a straightened state in turn, so as to first adjust the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 to be in a pre-bent state;

[0060] Preferably, the switching mechanism includes a driving motor 24 fixedly installed at the inner end of the equipment chamber 3, a first telescopic rod 25 fixedly connected to the output end of the driving motor 24 is rotatably installed at the inner end of the equipment chamber 3, a driving screw 4 is located on the inner end of the equipment chamber 3 and is fixedly connected to a rotating shaft 26, a torsion detection shaft 5 is located on the inner end of the equipment chamber 3 and is fixedly connected to a second telescopic rod 27, the first telescopic rod 25 and the second telescopic rod 27 are both composed of a fixed end and a telescopic end, the telescopic end of the first telescopic rod 25 is fixedly connected to a first driving gear 28 and a first rotating gear 29, the rotating shaft 26 is fixedly connected to a rotating member 30 and a second driving gear 32 meshingly connected to the first driving gear 28, the rotating member 30 is an incomplete disc structure, and has an arc end and a non-arc end on the rotating member 30, that is, an attached Figure 8 The left and right ends of the rotating member 30 in the telescopic rod 27 are fixedly installed with a groove wheel member 33 and a second rotating gear 34 meshingly connected with the first rotating gear 29.

[0061] Preferably, the switching mechanism further comprises a first vertical rod 35, a second vertical rod 36, a third vertical rod 37 and a fourth vertical rod 38 fixedly mounted on the inner end of the equipment room 3, wherein the first vertical rod 35, the second vertical rod 36, the third vertical rod 37 and the fourth vertical rod 38 are all composed of a vertical rod end and a disc end. Fig. 9 As shown, the disc end of the first vertical rod 35 and the disc end of the third vertical rod 37 are arranged on the same axis as the first telescopic rod 25, while the disc end of the second vertical rod 36 and the disc end of the fourth vertical rod 38 are arranged on the same axis as the second telescopic rod 27. At the same time, the disc end of the first vertical rod 35, the disc end of the second vertical rod 36, the disc end of the third vertical rod 37 and the disc end of the fourth vertical rod 38 are all provided with a sliding circular groove 39, and the disc end of the first vertical rod 35 and the disc end of the fourth vertical rod 38 are all provided with a transverse long hole 40, one end of the first driving gear 28 and one end of the first rotating gear 29 are respectively integrally formed with a first sliding rod 41 and a second sliding rod 42, and the two ends of the second rotating gear 34 are respectively integrally formed with a third sliding rod 43 and a fourth sliding rod 44.

[0062] Preferably, as attached Figure 8 As shown, the switching mechanism also includes an avoidance groove 45 provided on the groove wheel member 33, and the avoidance groove 45 is used to avoid the arc end of the rotating member 30. When the arc end of the rotating member 30 is located in the avoidance groove 45, the rotating member 30 cannot drive the groove wheel member 33, and a movable slide groove 46 is provided on the groove wheel member 33. A movable lever 47 is fixedly connected to the non-arc end of the rotating member 30, and a movable protrusion 48 is integrally formed on the movable lever 47. When the movable protrusion 48 is intermittently movably sleeved in the movable slide groove 46, it drives the groove wheel member 33 to rotate intermittently, and causes the torsion detection shaft 5 to rotate intermittently.

[0063] As attached Fig. 9 and attached Fig.10 As shown, the first vertical rod 35 is located between the driving motor 24 and the first driving gear 28, the second vertical rod 36 is located between the groove wheel member 33 and the second rotating gear 34, the third vertical rod 37 and the fourth vertical rod 38 correspond to the second sliding rod 42 and the fourth sliding rod 44 respectively, and the telescopic end of the first telescopic rod 25 and the telescopic end of the second telescopic rod 27 are movably sleeved in the transverse long hole 40 of the first vertical rod 35 and the transverse long hole 40 of the second vertical rod 36 respectively, as shown in the attached Fig. 9As shown, when the first driving gear 28 is meshed with the second driving gear 32, the first sliding rod 41 and the third sliding rod 43 are movably sleeved on the sliding circular groove 39 of the first vertical rod 35 and the sliding circular groove 39 of the second vertical rod 36 respectively, and at the same time, the rotating member 30 is connected with the groove wheel member 33, and the first rotating gear 29 is separated from the second rotating gear 34;

[0064] As attached Fig.10 As shown, when the first rotating gear 29 is meshedly connected with the second rotating gear 34, the second sliding rod 42 and the fourth sliding rod 44 are movably sleeved on the sliding circular groove 39 of the third vertical rod 37 and the sliding circular groove 39 of the fourth vertical rod 38 respectively, and at the same time, the rotating member 30 is separated from the groove wheel member 33, and the first driving gear 28 is separated from the second driving gear 32.

[0065] In particular, the attached Fig. 9 As shown, when the telescopic end of the first telescopic rod 25 and the telescopic end of the second telescopic rod 27 move to the right until the first driving gear 28 is meshed and connected with the second driving gear 32, the first vertical rod 35 and the second vertical rod 36 are provided to prevent the telescopic end of the first telescopic rod 25 and the telescopic end of the second telescopic rod 27 from continuing to move to the right;

[0066] As attached Fig.10 As shown, when the telescopic end of the first telescopic rod 25 and the telescopic end of the second telescopic rod 27 move to the left until the first rotating gear 29 is meshed and connected with the second rotating gear 34, the third vertical rod 37 and the fourth vertical rod 38 are provided to prevent the telescopic end of the first telescopic rod 25 and the telescopic end of the second telescopic rod 27 from continuing to move to the left;

[0067] Preferably, as attached Fig.17 and attached Fig.18 As shown, the driving mechanism includes a first vertical driver 49, a transverse driver 50 and a second vertical driver 31 which are arranged on the frame 1. The first vertical driver 49 is composed of a first vertical track and a first pushing cylinder located in the first vertical track, and the transverse driver 50 is composed of a transverse track and a second pushing cylinder located in the transverse track.

[0068] The second vertical driver 31 is composed of a second vertical rail and a third push cylinder located in the second vertical rail. The lower end of the first vertical rail is fixedly connected to the frame 1. The transverse rail is slidably sleeved in the first vertical rail, and the output end of the first push cylinder is fixedly connected to the transverse rail. The second vertical rail is slidably sleeved in the transverse rail, and the output end of the second push cylinder is fixedly connected to the second vertical rail. The first movable block 17 is slidably sleeved in the second vertical rail, and the output end of the third push cylinder is fixedly connected to the first movable block 17.

[0069] As attached Fig.17 and attached Fig.18As shown, the first push cylinder is first started to allow the first movable block 17 and the second movable block 18 to move linearly upward, and then the second push cylinder is started to allow the first movable block 17 and the second movable block 18 to move linearly to the right, so that the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 is in a pre-bent state, and then the third push cylinder is started to allow the first movable block 17 and the second movable block 18 to move linearly reciprocatingly up and down to perform a bending detection on the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18.

[0070] The present invention can be explained by the following operation mode:

[0071] First, insert the cable body at the pay-off drum 2 into the left end rectangular portion of the limit chamber 8, as shown in the attached Fig.12 and attached Fig.14 As shown, the cable body is passed through the rectangular right end of the cross section of the limit chamber 8, and then the cable body is sleeved on the three transition cylinders 12 and guided into the circular limit shell 13, so that the cable body in the circular limit shell 13 is in close contact with the lower end of the torsion detection shaft 5, and then the cable body is passed through the right-angle sliding hole 16, and the cable body then passes through the first movable block 17 and the second movable block 18 in sequence through the vertical sliding hole 19, and the two second clamping hydraulic cylinders are driven to allow the two third arc-shaped clamping members 20 to clamp the cable body at the vertical sliding hole 19 of the second movable block 18;

[0072] Then start the first push cylinder, as shown in the attached Fig.17 and attached Fig.18 As shown, the first movable block 17 and the second movable block 18 are moved linearly upward, and the cable body at the right-angle sliding hole 16 is pulled, so that the length of the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 becomes longer, and then the second push cylinder is started to move the first movable block 17 and the second movable block 18 linearly to the right, as shown in the attached figure. Fig.19 As shown, the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 is in a pre-bent state;

[0073] At the same time, the drive motor 24 is started. Fig. 9 As shown, the output end of the driving motor 24 drives the first telescopic rod 25 to rotate, and the telescopic end of the first telescopic rod 25 drives the first driving gear 28 to rotate. Since the first driving gear 28 is meshed with the second driving gear 32, the second driving gear 32 drives the rotating shaft 26 and the rotating member 30 to rotate, and the rotating shaft 26 drives the driving screw 4 to rotate, and the driving screw 4 drives the moving nut 6 and the limit chamber 7 to move linearly, as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the movable nut 6 and the limit chamber 7 are moved linearly toward the right end of the frame 1;

[0074] And as attached Figure 8 As shown, the rotating member 30 drives the movable convex rod 48 to rotate through the movable lever 47, and the movable convex rod 48 is intermittently movable and sleeved in the movable slide groove 46, so that the groove wheel member 33 rotates intermittently, and the groove wheel member 33 drives the torsion detection shaft 5 to rotate intermittently through the second telescopic rod 27. Fig.14 As shown in FIG. 1 , the torsion detection shaft 5 rotates intermittently counterclockwise, and in cooperation with the linear movement of the moving nut 6, as shown in FIG. Fig. 20 As shown, the cable body in the annular limiting shell 13 is wound around the torsion detection shaft 5 in an interval manner, and the first clamping hydraulic cylinder is started to make the second arc-shaped clamping member 11 cooperate with the first arc-shaped clamping member 10 to clamp the cable body at the left end rectangle of the cross section of the limiting chamber 8;

[0075] Afterwards as attached Fig.10 As shown, the first telescopic rod 25 and the second telescopic rod 27 are started, and the telescopic end of the first telescopic rod 25 drives the first driving gear 28 and the first rotating gear 29 to move leftward, until the second sliding rod 42 moves into the sliding circular groove 39 of the third vertical rod 37, and at the same time, the telescopic end of the second telescopic rod 27 drives the groove wheel member 33 and the second rotating gear 34 to move leftward, until the fourth sliding rod 44 moves into the sliding circular groove 39 of the fourth vertical rod 38;

[0076] At this time, the first driving gear 28 is separated from the second driving gear 32, the rotating member 30 is separated from the grooved wheel member 33, and the first rotating gear 29 is meshed and connected with the second rotating gear 34, and the driving motor 24 is started to allow the first telescopic rod 25 to drive the first rotating gear 29 to rotate. As the first rotating gear 29 is meshed and transmitted with the second rotating gear 34, as shown in the attached figure Fig.14 As shown, the second rotating gear 34 drives the torsion detection shaft 5 to rotate continuously clockwise through the second telescopic rod 27, so that the cable body at the right-angle sliding hole 16 is wound around the torsion detection shaft 5, and at the same time, the cable body at the right-angle sliding hole 16 drives the second movable block 18 to move downward, and the second movable block 18 is tightly attached to the first movable block 17, and the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 is tightened, and at this time, the cable body on the torsion detection shaft 5 is also in a tightened state;

[0077] Then start the third push cylinder, as shown in the attached Fig.18 and attached Fig.19 As shown, the first movable block 17 and the second movable block 18 are moved up and down in a straight line to perform bending detection on the cable body between the right-angle sliding hole 16 and the vertical sliding hole 19 of the second movable block 18 until fatigue damage occurs on the outer insulation layer of the cable body, thereby completing the bending detection;

[0078] After completing the bending test, Fig.14 As shown, the torsion detection shaft 5 is allowed to rotate continuously clockwise, so that the cable body on the torsion detection shaft 5 is subjected to torsion detection until fatigue damage occurs to the outer insulation layer of the cable body, thereby completing the torsion detection.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary lifting mechanism for high-voltage cable detection, comprising a frame (1) and a cable body, characterized in that: A wire-releasing drum (2) for placing a cable body is rotatably mounted on the frame (1), an equipment room (3) is fixedly mounted on the frame (1), a driving screw (4) and a torsion detection shaft (5) are rotatably mounted through the equipment room (3), one end of the driving screw (4) and one end of the torsion detection shaft (5) extend to the inner end of the equipment room (3), and the other end of the driving screw (4) and the other end of the torsion detection shaft (5) are located at the outer end of the equipment room (3), a movable nut (6) is matched and mounted on the driving screw (4) at the outer end of the equipment room (3), a limit chamber (7) is fixedly connected to the movable nut (6), a limit chamber (8) is provided in the limit chamber (7), and the cross section of the limit chamber (8) is composed of an incomplete circular ring at the middle end and rectangles at the two ends, and a plurality of first rotating cylinders (9) for facilitating the movement of the cable body are rotatably mounted at both upper and lower ends of the limit chamber (8); A first arc-shaped clamping member (10) is fixedly connected to the lower end of the left rectangular section of the limit chamber (8), and a second arc-shaped clamping member (11) is slidably arranged at the upper end of the left rectangular section of the limit chamber (8). Three transition cylinders (12) for guiding the movement of the cable body are rotatably arranged at the right rectangular section of the limit chamber (8), and the three transition cylinders (12) are distributed in a triangular shape. The limit chamber (7) is located below the transition cylinder (12) and is fixedly connected to a circular ring limit shell (13), and a plurality of second rotating cylinders (14) for facilitating the movement of the cable body are rotatably installed on one side of the circular ring limit shell (13). The three transition cylinders (12) cooperate with a circular ring limit shell (13) to allow the cable body to be tightly attached to the lower end of the torsion detection shaft (5). A vertical long block (15) is fixedly connected to the side of the frame (1) away from the driving screw (4), and a right-angle sliding hole (16) for guiding the cable body is provided in the vertical long block (15). A first movable block (17) and a second movable block (18) slidably connected to the first movable block (17) are movably provided on the side of the frame (1) away from the driving screw (4), and the first movable block (17) and the second movable block (18) are both provided with vertical sliding holes (19). Two third arc-shaped clamping members (20) are slidably provided on the upper end of the second movable block (18). When the driving screw (4) rotates continuously and the torsion detection shaft (5) rotates intermittently, the cable body located in the annular limit shell (13) is wound around the torsion detection shaft (5) in an interval manner. 5), when the driving screw (4) stops rotating and the torsion detection shaft (5) continues to rotate, a torsion detection is performed on the cable body wound on the torsion detection shaft (5), and after the first movable block (17) and the second movable block (18) move linearly upward and linearly to the right in sequence, the first movable block (17) and the second movable block (18) move linearly up and down again, and a bending detection is performed on the cable body located between the right-angle sliding hole (16) and the vertical sliding hole (19), and a switching mechanism is provided in the equipment room (3), and the switching mechanism is used to switch the rotation state of the driving screw (4) and the torsion detection shaft (5), and the frame (1) is provided with a driving mechanism, and the driving mechanism is used to drive the first movable block (17) and the second movable block (18) to move linearly; The switching mechanism comprises a driving motor (24) fixedly mounted on the inner end of the equipment chamber (3); a first telescopic rod (25) fixedly connected to the output end of the driving motor (24) is rotatably mounted on the inner end of the equipment chamber (3); the driving screw (4) is located on the inner end of the equipment chamber (3) and is fixedly connected to a rotating shaft (26); the torsion detection shaft (5) is located on the inner end of the equipment chamber (3) and is fixedly connected to a second telescopic rod (27); the first telescopic rod (25) and the second telescopic rod (27) are both composed of a fixed end and a telescopic end; A telescopic end of a telescopic rod (25) is fixedly connected to a first driving gear (28) and a first rotating gear (29); the rotating shaft (26) is fixedly connected to a rotating member (30) and a second driving gear (32) meshingly connected to the first driving gear (28); the rotating member (30) is an incomplete disc structure, and has an arc end and a non-arc end; the telescopic end of the second telescopic rod (27) is fixedly mounted with a grooved wheel member (33) and a second rotating gear (34) meshingly connected to the first rotating gear (29); The switching mechanism further comprises a first vertical rod (35), a second vertical rod (36), a third vertical rod (37) and a fourth vertical rod (38) fixedly mounted on the inner end of the equipment room (3); the first vertical rod (35), the second vertical rod (36), the third vertical rod (37) and the fourth vertical rod (38) are all composed of a vertical rod end and a disc end; the disc end of the first vertical rod (35), the disc end of the second vertical rod (36), the disc end of the third vertical rod (37) and the disc end of the fourth vertical rod (38) are all provided with a sliding circular groove (39); the disc end of the first vertical rod (35) and the disc end of the fourth vertical rod (38) are all provided with a transverse long hole (40); one end of the first driving gear (28) and one end of the first rotating gear (29) are respectively integrally formed with a first sliding rod (41) and a second sliding rod (42); and two ends of the second rotating gear (34) are respectively integrally formed with a third sliding rod (43) and a fourth sliding rod (44); The switching mechanism further comprises an avoidance circular groove (45) formed on the groove wheel member (33), the avoidance circular groove (45) being used to avoid the arc end of the rotating member (30), the groove wheel member (33) being provided with a movable slide groove (46), the non-arc end of the rotating member (30) being fixedly connected with a movable lever (47), the movable lever (47) being integrally formed with a movable convex rod (48), and the movable convex rod (48) being intermittently movably sleeved in the movable slide groove (46); The first vertical rod (35) is located between the driving motor (24) and the first driving gear (28), the second vertical rod (36) is located between the groove wheel (33) and the second rotating gear (34), the third vertical rod (37) and the fourth vertical rod (38) correspond to the second sliding rod (42) and the fourth sliding rod (44) respectively, and the telescopic end of the first telescopic rod (25) and the telescopic end of the second telescopic rod (27) are movably sleeved in the transverse long hole (40) of the first vertical rod (35) and the transverse long hole (40) of the second vertical rod (36) respectively. ), when the first driving gear (28) is meshedly connected with the second driving gear (32), the first sliding rod (41) and the third sliding rod (43) are movably sleeved in the sliding circular groove (39) of the first vertical rod (35) and the sliding circular groove (39) of the second vertical rod (36), respectively; when the first rotating gear (29) is meshedly connected with the second rotating gear (34), the second sliding rod (42) and the fourth sliding rod (44) are movably sleeved in the sliding circular groove (39) of the third vertical rod (37) and the sliding circular groove (39) of the fourth vertical rod (38), respectively.

2. A rotary lifting mechanism for high voltage cable detection according to claim 1, characterized in that: A clamping member vertical groove is provided at the upper end of the left rectangular section of the limiting chamber (8), and the second arc-shaped clamping member (11) is slidably sleeved in the clamping member vertical groove. A first clamping hydraulic cylinder is fixedly connected in the clamping member vertical groove, and the output end of the first clamping hydraulic cylinder is fixedly connected to the second arc-shaped clamping member (11). The first arc-shaped clamping member (10) cooperates with the second arc-shaped clamping member (11) to clamp the cable body located at the left rectangular section of the limiting chamber (8). A transverse mounting plate (21) is fixedly connected to the right rectangular section of the limiting chamber (8), and the three transition cylinders (12) are rotatably mounted on the transverse mounting plate (21).

3. A rotary lifting mechanism for high voltage cable detection according to claim 2, characterized in that: The second movable block (18) has two fixed square grooves (22) and two clamping member transverse grooves at the upper end, the first movable block (17) is fixedly connected to a square long rod (23) slidably sleeved in the fixed square groove (22), the two clamping member transverse grooves are respectively fixedly connected to a second clamping hydraulic cylinder, the two third arc-shaped clamping members (20) are respectively slidably sleeved in the two clamping member transverse grooves, and the two third arc-shaped clamping members (20) are respectively fixedly connected to the output ends of the two second clamping hydraulic cylinders, and the two third arc-shaped clamping members (20) are respectively fixedly connected to the output ends of the two second clamping hydraulic cylinders, and the two third arc-shaped clamping members (20) cooperate to clamp the cable body located in the vertical sliding hole (19) of the second movable block (18).

4. A rotary lifting mechanism for high voltage cable detection according to claim 3, characterized in that: The driving mechanism comprises a first vertical drive (49), a transverse drive (50) and a second vertical drive (31) arranged on the frame (1), wherein the first vertical drive (49) is composed of a first vertical track and a first pushing cylinder located in the first vertical track, and the transverse drive (50) is composed of a transverse track and a second pushing cylinder located in the transverse track; The second vertical driver (31) is composed of a second vertical rail and a third pushing cylinder located in the second vertical rail, the lower end of the first vertical rail is fixedly connected to the frame (1), the transverse rail is slidably sleeved in the first vertical rail, and the output end of the first pushing cylinder is fixedly connected to the transverse rail, the second vertical rail is slidably sleeved in the transverse rail, and the output end of the second pushing cylinder is fixedly connected to the second vertical rail, the first movable block (17) is slidably sleeved in the second vertical rail, and the output end of the third pushing cylinder is fixedly connected to the first movable block (17).

5. A method for detecting a rotating lifting mechanism for high-voltage cable detection as claimed in claim 4, characterized in that: The detection method comprises the following steps: Step S1: firstly, the cable body at the pay-off drum (2) is passed through the limit chamber (8), and then the cable body is guided into the circular limit shell (13), so that the cable body in the circular limit shell (13) is in close contact with the lower end of the torsion detection shaft (5), and then the cable body passes through the vertical long block (15), the first movable block (17) and the second movable block (18) in sequence, and the cable body at the vertical sliding hole (19) of the second movable block (18) is clamped by two third arc-shaped clamping members (20); Step S2: activating the first push cylinder to move the first movable block (17) and the second movable block (18) linearly upward, and then activating the second push cylinder to move the first movable block (17) and the second movable block (18) linearly rightward, so that the cable body between the right-angle sliding hole (16) and the vertical sliding hole (19) of the second movable block (18) is in a pre-bent state; Step S3: the torsion detection shaft (5) is then rotated intermittently, and with the linear movement of the moving nut (6), the cable body in the annular limiting shell (13) is wound around the torsion detection shaft (5) in an interval manner, and the second arc-shaped clamping member (11) cooperates with the first arc-shaped clamping member (10) to clamp the cable body at the left end rectangle of the cross section of the limiting chamber (8); Step S4: by separating the first driving gear (28) from the second driving gear (32), separating the rotating member (30) from the grooved wheel member (33), and meshing the first rotating gear (29) with the second rotating gear (34), and starting the driving motor (24), the second rotating gear (34) drives the torsion detection shaft (5) to rotate continuously, so that the cable body at the right-angle sliding hole (16) is wound around the torsion detection shaft (5), and at the same time, the second movable block (18) is tightly attached to the first movable block (17), and the cable body between the right-angle sliding hole (16) and the vertical sliding hole (19) of the second movable block (18) is tightened, and the cable body on the torsion detection shaft (5) is also in a tightened state; Step S5: Then, the third push cylinder is started to make the first movable block (17) and the second movable block (18) move linearly and reciprocatingly up and down, so as to perform a bending test on the cable body between the right-angle sliding hole (16) and the vertical sliding hole (19) of the second movable block (18), until fatigue damage occurs to the outer insulation layer of the cable body, thereby completing the bending test; Step S6: After the bending test is completed, the torsion detection shaft (5) is allowed to rotate continuously, so that the cable body on the torsion detection shaft (5) is subjected to torsion detection until fatigue damage occurs to the outer insulation layer of the cable body, thereby completing the torsion detection.

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