Cable insulativity testing device

Abstract

The invention belongs to the technical field of cable testing, and particularly relates to a cable insulativity testing device which comprises a box body, a rotating rod is rotationally connected to one side of the back face of the box body, the outer surface of the rotating rod is sleeved with a transparent cover plate, a peeling assembly is installed on the inner surface of the transparent cover plate, and a megohm resistance meter is arranged outside the box body. A shielding piece is slidably connected to the inner bottom wall of the box body, a groove is formed in the middle of the box body, a balance plate is slidably connected into the groove, and a cable pulling assembly is installed at the top of the shielding piece. According to the cable insulativity testing device, the center rod rotates to drive the electric telescopic plate, the telescopic piece and the rubber sleeve layer to move synchronously, after the cable is wound around the outer surface of the rubber sleeve layer, the electric telescopic plate is driven to work, the electric telescopic plate gradually shrinks the telescopic piece inwards, the rubber sleeve layer is gradually separated from the wound cable, and the cable insulativity is tested. Therefore, errors generated when the center rod is in contact with the cable are prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of cable testing, in particular to a cable insulation testing device. Background Art

[0002] A cable is made of one or more mutually insulated conductors and an outer insulating protective layer. It is a wire that transmits electricity or information from one place to another. Cables are an important way of power transmission. The cable sheath needs to have good insulation properties. The detection of cable insulation is an important part of ensuring the safe operation of cables. The purpose is to detect the integrity of the insulating material. Generally, the insulation test of a single cable is carried out by water immersion method.

[0003] At present, when conducting water immersion detection on cable insulation, it is necessary to manually clamp the detection head on the conductor of the detected cable, and place the other end in water. Then, the insulation resistance value of the power cable should reach 500-1000 megohms to judge whether the cable insulation has defects. If it is lower than 500 megohms, there is a defect. When messy cables are placed in water, it is easy for the cables to overlap with each other, which will cause water to fail to enter the overlapping parts of the cables in time. If the insulation layer of these overlapping parts is damaged, the leakage current of the damaged insulation layer cannot be detected in time. Therefore, the cable needs to be immersed in water for a longer time to allow water to enter the overlapping parts of the cable and fully contact them. However, this will cause the cable to stay in water for a longer time during detection, which makes the efficiency of the entire cable insulation detection low, thereby reducing the inspection efficiency after cable production and processing. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a cable insulation testing device described in the present invention includes a box body, a side of the back side of the box body is rotatably connected to a rotating rod, the outer surface of the rotating rod is sleeved with a transparent cover plate, the inner surface of the transparent cover plate is installed with a stripping assembly, the stripping assembly is used to remove the outer skin of the outer surface of the cable, a megohmmeter is arranged on the outside of the box body, a shielding member is slidably connected to the bottom wall of the box body, a groove is opened in the middle of the box body, a balance plate is slidably connected in the groove, a cable pulling assembly is installed on the top of the shielding member, and the cable pulling assembly is used to adjust the length of the wire body part of the cable.

[0006] Furthermore, the cable pulling assembly includes a moving block installed on the top of the shielding member, a sliding bar is installed on the outer surface of the moving block, the inner cavity of the moving block is threadedly connected to a central axis, a servo motor 1 is arranged at one end of the central axis, a center rod is rotatably connected to the middle of the box body, a threading seat is fixedly connected to the side of the shielding member close to the center rod, a cable is arranged at the end of the threading seat, a limiting block is fixedly connected to the outer surface of the center rod, the center rod is rotatably connected to the middle of the box body, a cable is wound on the outer surface of the center rod, a servo motor 2 is arranged at one end of the center rod, one end of the center rod is connected to the output end of the servo motor 2, a fixed block is fixedly connected to the end of the central axis, a ramp A is fixedly connected to the side of the fixed block close to the shielding member, a torsion bar is rotatably connected between the moving block and the shielding member, and a fan B is fixedly connected to the outer surface of the torsion bar.

[0007] Furthermore, the limiting block is adapted to the size of the cable, and a slide groove is provided on the inner wall of the box body, and the slide groove slides with the slide bar of the moving block.

[0008] Furthermore, a round hole adapted to the cable is opened on the limiting block, the inclined plate A is in an "L" shape, and a detection chuck is installed on the inner wall of the box body.

[0009] Furthermore, a separation component is provided on the outer surface of the center rod, and the separation component is used to change the state of the cable when it contacts the center rod. The separation component includes a plurality of electric telescopic plates, and the outer surfaces of the plurality of electric telescopic plates are telescopically connected with telescopic parts, and the ends of the telescopic parts are fixedly connected with rubber sleeve layers.

[0010] Furthermore, the rubber sheath layer is located inside the cable, and the distance between two adjacent rubber sheath layers is the same.

[0011] Furthermore, the peeling assembly includes two vertical plates and a mounting seat installed on the inner surface of the transparent cover plate, the bottom ends of the two vertical plates are fixedly connected with elliptical disks, a main shaft is inserted in the inner cavity of the elliptical disk, a clamping block is sleeved on the outer surface of the main shaft, a limiting block is fixedly connected to the bottom end of the mounting seat, a sliding groove is opened on the inner side wall of the limiting block, and a cutting blade is slidably connected inside the sliding groove.

[0012] Furthermore, the clamping block and the limiting block are provided with flush through holes inside, and the clamping block is provided with an anti-slip strip inside, and the anti-slip strip is used to prevent the passing cable from slipping off.

[0013] Furthermore, an anti-drop component is installed on the lower surface of the balance board, and the anti-drop component is used to hang the cable to prevent the cable from falling down and affecting the insulation detection. The anti-drop component includes a through plate, and two vertical pieces are arranged at the bottom ends of both sides of the through plate, and a steel wire is connected between the two vertical pieces.

[0014] Furthermore, the two uprights penetrate the interior of the cable, and one end of the steel wire is detachable; the uprights are made of stainless steel.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. A cable insulation testing device described in the present invention, when the outer surface of the center rod is entangled with the cable, the center rod contacts the cable, and the water flow cannot penetrate the contacting part of the two. There may still be a detection error caused by the inability to penetrate. Using the embodiment of the present invention, the center rod is started to rotate to drive the electric telescopic plate, the telescopic part, and the rubber sleeve to move synchronously. After the cable is wound around the outer surface of the rubber sleeve, the electric telescopic plate is driven to work, and the electric telescopic plate gradually contracts the telescopic part inside it, and the telescopic part is pulled back to the rubber sleeve. The rubber sleeve is gradually separated from the wound cable, thereby preventing the error caused by the contact between the center rod and the cable, and improving the accuracy of the cable insulation detection.

[0017] 2. A cable insulation testing device described in the present invention will fall down after the cable is separated from the center rod. The shaking during the falling will affect the shaking of the connector of the megohmmeter, causing detection errors. Therefore, when it is necessary to prevent it from falling, the moving block drives the fan B to move synchronously when it moves. When the fan B moves to the position of the inclined plate A, the fan B slides along the inclined surface of the inclined plate A, the height of the fan B changes, and the fan B squeezes the balance plate. The balance plate moves upward, and the balance plate drives the through plate to move. The through plate pulls the vertical piece inserted into the cable upward, and the cable is prevented from sliding downward, thereby ensuring that the equipment has the function of preventing the cable from falling. It should be noted that one end of the vertical piece needs to be disassembled first and passed through the inside of the cable. The distance between two adjacent rubber sleeve layers is greater than the diameter of the vertical piece, so that the vertical piece can pass through the distance between the two adjacent rubber sleeve layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is an overall schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the box structure analysis of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the megohm resistance meter of the present invention;

[0022] Figure 4 This is a schematic diagram of the cooperation between the transparent cover plate and the box body after the transparent cover plate of the present invention is unfolded;

[0023] Figure 5 It is a schematic diagram of the structure of the peeling assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the cable pulling assembly of the present invention;

[0025] Figure 7 is a bottom view schematic diagram of the cable pulling assembly of the present invention;

[0026] Figure 8 It is a schematic diagram of the structural coordination between the fan blade and the balance plate of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structural coordination of the anti-drop assembly and the cable pulling assembly of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the separation component of the present invention;

[0029] Fig.11 It is a schematic diagram of the internal expansion of the anti-drop assembly of the present invention.

[0030] In the figure: 1. box body; 2. transparent cover; 21. vertical plate; 22. oval disk; 23. main shaft; 24. clamping block; 25. mounting seat; 26. limiting block; 27. cutting blade; 3. rotating rod; 4. megohm meter; 5. shielding member; 52. moving block; 53. middle axis; 54. threading seat; 55. limiting block; 57. cable; 59. fixing block; 59A, inclined plate; 59B, fan blade; 581, electric telescopic plate; 582, telescopic member; 583, rubber sleeve; 6. balance plate; 61. through plate; 62. vertical member; 63. steel wire. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Combination Figures 1 to 3 As shown, a cable insulation testing device described in an embodiment of the present invention includes a box body 1, a rotating rod 3 is rotatably connected to one side of the back side of the box body 1, a transparent cover plate 2 is sleeved on the outer surface of the rotating rod 3, a stripping assembly is installed on the inner surface of the transparent cover plate 2, and the stripping assembly is used to remove the outer skin of the outer surface of the cable, a megohmmeter 4 is arranged on the outside of the box body 1, a shielding member 5 is slidably connected to the inner bottom wall of the box body 1, a groove is opened in the middle of the box body 1, a balance plate 6 is slidably connected in the groove, and a cable pulling assembly is installed on the top of the shielding member 5, and the cable pulling assembly is used to adjust the length of the wire body part of the cable.

[0033] During operation, when it is necessary to perform insulation testing on the cable, the embodiment of the present invention is used. First, the transparent cover plate 2 is opened, the cable is placed in the box 1, and then a proper amount of water is added to the box 1. The two connectors of the megohmmeter 4 are respectively connected to the core of one end of the cable and the water in the box 1. The transparent cover plate 2 is closed. At this time, the servo motor is started, and the cable pulling assembly is operated through the action of the thread transmission. After the cable pulling assembly is operated, the cable is evenly pulled apart to prevent the cable from overlapping when placed inside the box 1, so that the cable is fully in contact with the water, thereby ensuring the quality of insulation testing.

[0034] During the inspection, the megohm meter 4 is turned on, and the insulation quality is judged by whether the resistance value fed back on the megohm meter 4 is between 500 and 1000 megohms. If it is between 500 and 1000 megohms, it means that the insulation of the cable is qualified and there is no defect and it can be put into use normally; otherwise, if it is lower than 500 megohms, the insulation of the cable is unqualified and it is not allowed to be put into use.

[0035] like Figures 6 to 8 As shown, the cable pulling assembly includes a moving block 52 installed on the top of the shielding member 5, a sliding bar is installed on the outer surface of the moving block 52, a central axis 53 is threadedly connected to the inner cavity of the moving block 52, a servo motor 1 is arranged at one end of the central axis 53, a center rod 58 is rotatably connected to the middle of the box body 1, a threading seat 54 is fixedly connected to the side of the shielding member 5 close to the center rod 58, a cable 57 is arranged at the end of the threading seat 54, a limiting block 55 is fixedly connected to the outer surface of the center rod 58, a servo motor 2 is arranged at one end of the center rod 58, and one end of the center rod 58 is connected to the servo motor 2. The output end is connected, the end of the central axis 53 is fixedly connected with a fixed block 59, and the side of the fixed block 59 close to the shielding member 5 is fixedly connected with an inclined plate 59A, and a twist bar is rotatably connected between the moving block 52 and the shielding member 5, and a fan 59B is fixedly connected to the outer surface of the twist bar; the threading seat 54 is adapted to the size of the cable 57, and a slide groove is provided on the inner wall of the box body 1, and the slide groove slides with the slide bar of the moving block 52; a round hole adapted to the cable 57 is provided on the limiting block 55, and the inclined plate 59A is "L" shaped, and a detection chuck is installed on the inner wall of the box body 1;

[0036] During operation, the cables 57 are first rearranged to make the cables 57 evenly arranged in steps to prevent them from overlapping each other. Using the embodiment of the present invention, one end of the cables 57 is first passed through the detection clamp on the inner wall of the box 1 to make this end of the cables 57 higher than the water surface. The other end of the cables 57 is then passed through the threading seat 54 and then through the circular hole of the limiting block 55. The limiting block 55 limits the position of the cables 57 to prevent them from slipping when entangled. The moving block 52 and the shielding member 5 drive the threading seat 54 to move, and the threading seat 54 drives the cables 57 to move synchronously. The servo motor 2 is started. The center rod 58 is driven to move, and the cable 57 is wound along the outer surface of the center rod 58 under the constraint of the limiting block 55. At the same time, driven by the threading seat 54, the cable 57 is wound in a spiral shape on the outer surface of the center rod 58, so that the distance between the cables 57 is evenly pulled apart, solving the problem of overlapping of the cables 57 when immersed in water, facilitating orderly immersion in water, and facilitating subsequent inspection; it should be noted that the inclined plate 59A is used to change the height of the fan 59B. After the height is changed, it is convenient to raise the cable 57 to prevent the cable 57 from being suspended in the air and unable to be supported.

[0037] It should be noted that when one end of the cable 57 passes through the detection clamp on the inner wall of the box body 1, it is necessary to reserve enough cable 57 to ensure that the cable 57 can be completely wrapped around the outer surface of the center rod 58. The reserved cable 57 becomes shorter, and after the winding is completed, press the detection clamp to fix the cable 57.

[0038] like Fig.10 As shown, a separation component is provided on the outer surface of the center rod 58, and the separation component is used to change the state of the cable 57 when it is in contact with the center rod 58, so as to facilitate the accurate detection of the insulation of the cable 57. The separation component includes a plurality of electric telescopic plates 581, and the outer surfaces of the plurality of electric telescopic plates 581 are telescopically connected with telescopic parts 582, and the ends of the telescopic parts 582 are fixedly connected with rubber sleeves 583; the rubber sleeves 583 are located inside the cable 57, and the distance between two adjacent rubber sleeves 583 is the same, and the limiting block 55 is connected to one of the plurality of electric telescopic plates 581.

[0039] During operation, since the outer surface of the center rod 58 is entangled with the cable 57, the center rod 58 contacts the cable 57, and water cannot penetrate into the contacting portion of the two. However, water may still fail to penetrate and cause detection errors. Using the embodiment of the present invention, the center rod 58 is started to rotate to drive the electric telescopic plate 581, the telescopic member 582, and the rubber sleeve 583 to move synchronously. After the cable 57 is wound around the outer surface of the rubber sleeve 583, the electric telescopic plate 581 is driven to work. The electric telescopic plate 581 gradually retracts the telescopic member 582 into it, and the telescopic member 582 pulls back the rubber sleeve 583. The rubber sleeve 583 is gradually separated from the wound cable 57, thereby preventing errors caused when the center rod 58 contacts the cable 57 and improving the accuracy of insulation detection of the cable 57.

[0040] like Figures 4 to 5 As shown, the stripping assembly includes two vertical plates 21 and a mounting seat 25 installed on the inner surface of the transparent cover plate 2, the bottom ends of the two vertical plates 21 are fixedly connected with an elliptical disk 22, the inner cavity of the elliptical disk 22 is plugged with a main shaft 23, the outer surface of the main shaft 23 is sleeved with a clamping block 24, the bottom end of the mounting seat 25 is fixedly connected with a limiting block 26, the inner side wall of the limiting block 26 is provided with a sliding groove, and a cutting blade 27 is slidably connected inside the sliding groove; the clamping block 24 and the limiting block 26 are both provided with flush through holes, and the clamping block 24 is provided with an anti-slip strip, and the anti-slip strip is used to prevent the passing cable from slipping.

[0041] During operation, before the insulation test of the cable 57 is performed, it is necessary to manually take a tool to peel the cable 57 so that the wire core is exposed. When the number of cables to be tested is relatively large, the tool needs to be frequently taken back and forth, which is prone to loss. When using the embodiment of the present invention, before the cable 57 is placed in the box 1, one end of the cable 57 is first inserted from the position below the clamping block 24 and passed through the through hole of the limiting block 26. At this time, the cutting blade 27 is pushed upward by hand, and the cutting blade 27 is embedded in the limiting block 26. The outer skin of the cable 57 is cut. At this time, one hand holds the end of the cable 57 whose outer skin is cut, and the other hand pulls back the cable 57 inside the clamping block 24. The cable 57 is stripped at this time, and the stripping process is finally completed, which has the effect of preventing the stripping tool from being easily lost, and at the same time can protect the internal cable 57;

[0042] It should be noted that due to the limiting effect of the sliding groove, the cutting force of the cutting blade 27 is just greater than the outer skin of the cable 57, and the wire core will not be cut; the clamping block 24 is convenient for supporting the cable 57 to prevent the end from sliding down when the cutting blade 27 cuts the cable 57.

[0043] like Figure 7 , Figure 8 , Fig. 9 , Fig.11: An anti-drop component is installed on the lower surface of the balance board 6, and the anti-drop component is used to hang the cable 57 to prevent the cable 57 from falling down and affecting the insulation detection. The anti-drop component includes a through plate 61, and two vertical pieces 62 are arranged at the bottom ends of both sides of the through plate 61, and two steel wires 63 are connected between the two vertical pieces 62; the two steel wires 63 are fixedly connected to the side of one vertical piece 62, and plugged into the side of the other vertical piece 62, wherein the vertical piece 62 fixedly connected to the steel wire 63 is detachably installed.

[0044] During operation, the cable 57 will fall down after being separated from the center rod 58. The shaking during the falling will affect the shaking of the connector of the megohmmeter 4, causing detection errors. Therefore, when it is necessary to prevent it from falling, the moving block 52 drives the fan 59B to move synchronously when it moves. When the fan 59B moves to the position of the inclined plate 59A, the fan 59B rotates upward under the action of the inclined surface of the inclined plate 59A. During the upward rotation of the fan 59B, it will contact and squeeze the balance plate 6, so that the balance plate 6 moves upward, and the balance plate 6 drives the through plate 61 and the vertical piece 62 to move. The vertical piece 62 drives the steel wire 63 inserted into the cable 57 to move upward. At this time, the cable The wire 57 is prevented from sliding downward, thereby ensuring that the equipment has the function of preventing the cable 57 from falling; it should be noted that the detachable vertical component 62 together with the two steel wires 63 are first removed, and after the cable 57 is wound, the steel wire 63 fixedly connected to the vertical component 62 is passed through the interior of the cable 57 and inserted into another vertical component 62 and connected and fixed, when the cable 57 is separated from the center rod 58, the two steel wires 63 can support the cable 57 and can further prevent the cable 57 from sliding downward under the action of the fan piece 59B; it should be noted that the diameter of the steel wire 63 is very small, and the influence of its overlap with the cable 57 on the insulation detection can be ignored.

[0045] Working principle: When working, first rearrange the cables 57 to make them evenly arranged in steps to prevent them from overlapping each other. Using the embodiment of the present invention, first pass one end of the cable 57 through the detection clamp on the inner wall of the box 1 to make this end of the cable 57 higher than the water surface, and then pass the other end of the cable 57 through the threading seat 54, and then pass through the round hole of the limiting block 55. The limiting block 55 limits the position of the cable 57 to prevent it from slipping when entangled. The moving block 52 and the shielding member 5 drive the threading seat 54 to move, and the threading seat 54 drives the cable 57 to move synchronously, and the servo motor is started. The second machine drives the center rod 58 to move, and the cable 57 is wound along the outer surface of the center rod 58 under the restraint of the limiting block 55. At the same time, driven by the threading seat 54, the cable 57 is wound in a spiral shape on the outer surface of the center rod 58, so that the distance between the cables 57 is evenly stretched, solving the problem of overlapping of the cables 57 when immersed in water, facilitating orderly immersion in water, and facilitating subsequent detection; it should be noted that the inclined plate 59A is used to change the height of the fan blade 59B. After the height is changed, it is easy to raise the cable 57 to prevent the cable 57 from being suspended in the air and unable to be supported;

[0046] When the outer surface of the center rod 58 is entangled with the cable 57, the center rod 58 contacts the cable 57, and water cannot penetrate into the contacting part of the two. However, water may still fail to penetrate and cause detection errors. Using the embodiment of the present invention, the center rod 58 is started to rotate to drive the electric telescopic plate 581, the telescopic member 582, and the rubber sleeve 583 to move synchronously. After the cable 57 is wound around the outer surface of the rubber sleeve 583, the electric telescopic plate 581 is driven to work. The electric telescopic plate 581 gradually retracts the telescopic member 582 into it, and the telescopic member 582 pulls back the rubber sleeve 583. The rubber sleeve 583 gradually separates from the wound cable 57, thereby preventing errors caused when the center rod 58 contacts the cable 57 and improving the accuracy of insulation detection of the cable 57.

[0047] Since the cable 57 will fall down after being separated from the center rod 58, the shaking during the falling will affect the shaking of the connector of the megohmmeter 4, causing detection errors. Therefore, when it needs to be processed to prevent it from falling, the moving block 52 drives the fan 59B to move synchronously when it moves. When the fan 59B moves to the position of the inclined plate 59A, the fan 59B rotates upward under the action of the inclined surface of the inclined plate 59A. During the upward rotation of the fan 59B, it will contact and squeeze the balance plate 6, causing the balance plate 6 to move upward. The balance plate 6 drives the through plate 61 and the vertical piece 62 to move, and the vertical piece 62 drives the steel wire 63 inserted into the cable 57 to move upward. At this time, the cable 5 7 prevents it from sliding downward, thereby ensuring that the equipment has the function of preventing the cable 57 from falling; it should be noted that the detachable vertical component 62 is first removed together with the two steel wires 63, and after the cable 57 is wound, the steel wire 63 fixedly connected to the vertical component 62 is passed through the interior of the cable 57 and inserted into another vertical component 62 and connected and fixed, when the cable 57 is separated from the center rod 58, the two steel wires 63 can support the cable 57 and can further prevent the cable 57 from sliding downward under the action of the fan 59B; it should be noted that the diameter of the steel wire 63 is very small, and the influence of its overlap with the cable 57 on the insulation detection can be ignored.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable insulation test device, characterized in that: The utility model comprises a box body (1), wherein a rotating rod (3) is rotatably connected to one side of the back side of the box body (1), a transparent cover plate (2) is sleeved on the outer surface of the rotating rod (3), a stripping assembly is installed on the inner surface of the transparent cover plate (2), and the stripping assembly is used to remove the outer skin of the outer surface of the cable line, a megohmmeter (4) is arranged outside the box body (1), a shielding member (5) is slidably connected to the inner bottom wall of the box body (1), a groove is opened in the middle of the box body (1), a balance plate (6) is slidably connected in the groove, and a cable pulling assembly is installed on the top of the shielding member (5), and the cable pulling assembly is used to adjust the length of the cable body part of the cable line.

2. A cable insulation testing device according to claim 1, characterized in that: The cable pulling assembly comprises a moving block (52) mounted on the top of the shielding member (5), a sliding bar is mounted on the outer surface of the moving block (52), a central axis (53) is threadedly connected to the inner cavity of the moving block (52), a servo motor is arranged at one end of the central axis (53), a central rod (58) is rotatably connected to the middle of the box body (1), a threading seat (54) is fixedly connected to the side of the shielding member (5) close to the central rod (58), a cable (57) is arranged at the end of the threading seat (54), and the central rod (58) is connected to the center of the box body (1). A limiting block (55) is fixedly connected to the outer surface of the rod (58); a servo motor 2 is arranged at one end of the center rod (58); one end of the center rod (58) is connected to the output end of the servo motor 2; a fixed block (59) is fixedly connected to the end of the central axis (53); a slant plate (59A) is fixedly connected to the side of the fixed block (59) close to the shielding member (5); a torsion bar is rotatably connected between the moving block (52) and the shielding member (5); and a fan blade (59B) is fixedly connected to the outer surface of the torsion bar.

3. A cable insulation testing device according to claim 2, characterized in that: The limiting block (55) is adapted to the size of the cable (57), and a sliding groove is provided on the inner wall of the box body (1), and the sliding groove slides with the sliding bar of the moving block (52).

4. A cable insulation testing device according to claim 2, characterized in that: A circular hole matching the cable (57) is provided on the limiting block (55), the inclined plate (59A) is in an "L" shape, and a detection chuck is installed on the inner wall of the box body (1).

5. A cable insulation testing device according to claim 2, characterized in that: The outer surface of the central rod (58) is provided with a separation component, and the separation component is used to change the state of the cable (57) when in contact with the central rod (58). The separation component includes a plurality of electric telescopic plates (581), and the outer surfaces of the plurality of electric telescopic plates (581) are all telescopically connected to telescopic parts (582), and the ends of the telescopic parts (582) are fixedly connected to a rubber sleeve layer (583).

6. A cable insulation testing device according to claim 5, characterized in that: The rubber sheath layer (583) is located inside the cable (57), and the distance between two adjacent rubber sheath layers (583) is the same.

7. A cable insulation testing device according to claim 1, characterized in that: The peeling assembly comprises two vertical plates (21) and a mounting seat (25) mounted on the inner surface of the transparent cover plate (2); the bottom ends of the two vertical plates (21) are fixedly connected with an elliptical disk (22); a main shaft (23) is inserted into the inner cavity of the elliptical disk (22); a clamping block (24) is sleeved on the outer surface of the main shaft (23); a limiting block (26) is fixedly connected to the bottom end of the mounting seat (25); a sliding groove is provided on the inner side wall of the limiting block (26); a cutting blade (27) is slidably connected inside the sliding groove.

8. A cable insulation testing device according to claim 7, characterized in that: The clamping block (24) and the limiting block (26) are both provided with flush through holes, and the clamping block (24) is provided with an anti-slip strip inside, which is used to prevent the passing cables from slipping off.

9. A cable insulation testing device according to claim 1, characterized in that: An anti-drop component is installed on the lower surface of the balance board (6), and the anti-drop component is used to hang the cable (57) to prevent the cable (57) from falling down and affecting the insulation detection. The anti-drop component includes a through plate (61), and two vertical pieces (62) are arranged at the bottom ends of both sides of the through plate (61), and a steel wire (63) is connected between the two vertical pieces (62).

10. A cable insulation testing device according to claim 9, characterized in that: The two steel wires (63) are fixedly connected to the side of one upright member (62) and plugged into the side of another upright member (62), wherein the upright member (62) fixedly connected to the steel wires (63) is detachably installed.

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