A cable insulation testing device

Abstract

The present invention belongs to the field of cable testing technology, and more specifically, is a cable insulation testing device comprising a housing, wherein a rotating rod is rotatably connected to one side of the back of the housing, a transparent cover is sleeved on the outer surface of the rotating rod, a stripping assembly is mounted on the inner surface of the transparent cover, a megohmmeter is mounted on the outside of the housing, a shield is slidably connected to the bottom wall of the housing, a groove is defined in the center of the housing, a balance plate is slidably connected within the groove, and a cable pulling assembly is mounted on the top of the shield. The cable insulation testing device described in the present invention drives the synchronous movement of an electric telescopic plate, a telescopic member, and a rubber sheath by rotating a center rod. After the cable is wrapped around the outer surface of the rubber sheath, the electric telescopic plate is driven to operate, and the electric telescopic plate gradually retracts the telescopic member inwardly, gradually separating the rubber sheath from the wrapped cable, thereby preventing errors caused by contact between the center rod and the cable.

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] Cables are made of one or more mutually insulated conductors and an outer insulating protective layer. They are wires that transmit electricity or information from one place to another. Cables are an important way to transmit power. The cable sheath needs to have good insulation performance. Among them, the inspection of cable insulation is an important part to ensure the safe operation of cables. The purpose is to detect the integrity of the insulation material. Generally, the insulation test of a single cable is carried out by water immersion method.

[0003] Currently, when conducting water immersion testing on cable insulation, it is necessary to manually clamp the test head on the conductor of the cable to be tested, and place the other end in water. The insulation resistance value of the power cable should reach 500-1000 megohms to determine 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 prevent water from entering 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 testing, which makes the efficiency of the entire cable insulation test 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 problems is: a cable insulation testing device described in the present invention includes a box body, and a rotating rod is rotatably connected to one side of the back of the box body, and a transparent cover is sleeved on the outer surface of the rotating rod. A stripping assembly is installed on the inner surface of the transparent cover plate, and the stripping assembly is used to remove the outer skin of the outer surface of the cable. A megohmmeter is provided on the outside of the box body, and 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, and 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 the central axis, a servo motor 1 is provided 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 provided 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 wrapped around the outer surface of the center rod, a servo motor 2 is provided 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 slant plate 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 sliding groove is provided on the inner side wall of the box body, and the sliding groove slides with the sliding bar of the moving block.

[0008] Furthermore, a circular 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 side wall of the box.

[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 multiple electric telescopic plates, and the outer surfaces of the multiple electric telescopic plates are telescopically connected with telescopic parts, and the ends of the telescopic parts are fixedly connected with rubber sleeves.

[0010] Furthermore, the rubber sheath is located inside the cable, and the distance between two adjacent rubber sheaths 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 to elliptical disks, a main shaft is inserted into the inner cavity of the elliptical disk, a clamping block is sleeved on the outer surface of the main shaft, and a limiting block is fixedly connected to the bottom end of the mounting seat. A sliding groove is provided on the inner side wall of the limiting block, and a cutting blade is slidably connected inside the sliding groove.

[0012] Furthermore, flush through holes are provided inside the clamping block and the limiting block, and anti-slip strips are provided inside the clamping block to prevent the passing cables from slipping.

[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 provided 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 according to the present invention utilizes a central rod that contacts the cable when the outer surface of the central rod is entangled with the cable. Water cannot penetrate the contacting portion of the central rod and may still fail to penetrate the cable, resulting in detection errors. Using an embodiment of the present invention, the central rod is rotated to drive the electric telescopic plate, the telescopic member, and the rubber sleeve to move synchronously. After the cable is wrapped around the outer surface of the rubber sleeve, the electric telescopic plate is driven to operate. The electric telescopic plate gradually retracts the telescopic member into the rubber sleeve, which pulls the telescopic member back into the rubber sleeve. The rubber sleeve gradually separates from the wrapped cable, thereby preventing errors caused by contact between the central rod and the cable and improving the accuracy of cable insulation testing.

[0017] 2. The cable insulation testing device described in the present invention is a device for testing cable insulation. Since the cable will fall down after being separated from the center rod, the shaking during the fall will affect the shaking of the megohmmeter connector, causing detection errors. Therefore, when it needs to be treated 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 interior of 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 interior of the cable. The distance between the two adjacent rubber sleeves is greater than the diameter of the vertical piece, so that the vertical piece can pass through the distance between the two adjacent rubber sleeves. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0020] Figure 2 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 and the box body after they are unfolded;

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

[0024] Figure 6 It is a schematic structural diagram 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 This is a schematic diagram of the structural coordination between the fan blade and the balance plate of the present invention;

[0027] Figure 9 Schematic diagram of the structural coordination of the anti-drop assembly and the cable pulling assembly of the present invention;

[0028] Figure 10 It is a schematic structural diagram of the separation component of the present invention;

[0029] Figure 11 It is a schematic diagram of the internal expansion of the anti-drop component 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. Megohmmeter; 5. Shielding member; 52. Moving block; 53. Central axis; 54. Threading seat; 55. Limiting block; 57. Cable; 59. Fixed 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 easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Combine Figures 1 to 3 As shown, a cable insulation testing device described in an embodiment of the present invention includes a box body 1, and a rotating rod 3 is rotatably connected to one side of the back side of the box body 1, and 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 provided on the outside of the box body 1, and a shielding member 5 is slidably connected to the bottom wall of the box body 1. A groove is opened in the middle of the box body 1, and a balance plate 6 is slidably connected in the groove. 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 2 is opened, the cable is placed in the box 1, and then an appropriate amount of water is added to the box 1. The two connectors of the megohmmeter 4 are connected to the core of one end of the cable and the water in the box 1 respectively. The transparent cover 2 is closed, and the servo motor is started at this time. The cable pulling assembly is driven by the screw transmission. After the cable pulling assembly is activated, the cable is evenly pulled apart to prevent the cable from overlapping when placed inside the box 1. The cable is fully in contact with the water, thereby ensuring the quality of the insulation test.

[0034] During the inspection, the megohmmeter 4 is turned on, and the insulation quality is judged by whether the resistance value fed back on the megohmmeter 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 normal use; 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 slide is installed on the outer surface of the moving block 52, the inner cavity of the moving block 52 is threadedly connected to a central axis 53, one end of the central axis 53 is provided with a servo motor 1, and the middle of the box body 1 is rotatably connected to a center rod 58, the side of the shielding member 5 close to the center rod 58 is fixedly connected to a threading seat 54, the end of the threading seat 54 is provided with a cable 57, the outer surface of the center rod 58 is fixedly connected to a limiting block 55, one end of the center rod 58 is provided with a servo motor 2, 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 to a fixed block 59, and the side of the fixed block 59 close to the shielding member 5 is fixedly connected to an inclined plate 59A, and a twist bar is rotatably connected between the movable 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 side wall of the box body 1, and the slide groove slides with the slide bar of the movable block 52; a circular 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 side wall of the box body 1;

[0036] During operation, the cables 57 are first rearranged to make them evenly spaced to prevent them from overlapping. Using the embodiment of the present invention, one end of the cable 57 is first passed through the detection chuck on the inner wall of the box 1 to make this end of the cable 57 higher than the water surface. The other end of the cable 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 cable 57 to prevent it from slipping during winding. 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, starting the servo motor 2 with The center rod 58 moves, 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, thereby evenly stretching the distance between the cables 57, 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 support.

[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 1, enough cable 57 needs to be reserved 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 Figure 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 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. 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 the contact part between the two. However, there may still be a possibility that water cannot 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 wrapped 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 wrapped cable 57, thereby preventing errors caused by the contact between the center rod 58 and the cable 57 and improving the accuracy of insulation detection of the cable 57.

[0040] like Figures 4 and 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 2, the bottom ends of the two vertical plates 21 are fixedly connected to 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 to 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 inside, and the anti-slip strip is used to prevent the passing cable from slipping.

[0041] During operation, before the insulation of the cable 57 is tested, it is necessary to manually take out the tool to strip 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. Using the embodiment of the present invention, before the cable 57 is placed into the box body 1, one end of the cable 57 is first passed through 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 scratched. At this time, one hand pulls the end of the cable 57 whose outer skin is scratched, and the other hand pulls back the cable 57 inside the clamping block 24. The cable 57 is now stripped, and the stripping process is finally completed. It has the effect of preventing the stripping tool from being easily lost, and at the same time, it 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 core of the wire 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 、 Figure 9 、 Figure 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 provided at the bottom ends of both sides of the through plate 61. 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, and the vertical piece 62 fixedly connected to the steel wire 63 is detachable.

[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, it is necessary to carry out anti-falling treatment. When the moving block 52 moves, it drives the fan 59B to move synchronously. 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 contacts the balance plate 6 and squeezes 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. 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 is first removed together with the two steel wires 63. 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 test can be ignored.

[0045] Working principle: When working, first rearrange the cables 57 so that the cables 57 are evenly arranged in steps to prevent them from overlapping. 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 so that this end of the cable 57 is above the water surface. Then pass the other end of the cable 57 through the threading seat 54 and then pass through the circular 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, starting the servo motor. The second machine drives the center rod 58 to move. Under the restraint of the limiting block 55, the cable 57 is wound along the outer surface of the center rod 58. 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, thereby evenly stretching the distance between the cables 57, 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 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 the contact portion between 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 itself, and the telescopic member 582 pulls back the rubber sleeve 583. The rubber sleeve 583 gradually separates from the entangled cable 57, thereby preventing errors caused by the contact between the center rod 58 and 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 the error of the detection. 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 contacts the balance plate 6 and squeezes 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. The vertical piece 62 drives the steel wire 63 inserted into the cable 57 to move upward. At this time, the cable 5 7 to prevent 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. 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 test can be ignored.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended 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 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 provided 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 provided in the middle of the box body (1), a balance plate (6) is slidably connected in the groove, 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; 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), the inner cavity of the moving block (52) is threadedly connected to a central axis (53), one end of the central axis (53) is provided with a servo motor, the middle of the box (1) is rotatably connected to a center rod (58), the shielding member (5) is fixedly connected to a threading seat (54) on one side close to the center rod (58), and the end of the threading seat (54) is provided with a cable (57), the center The outer surface of the rod (58) is fixedly connected to a limiting block (55), one end of the center rod (58) is provided with a servo motor 2, one end of the center rod (58) is connected to the output end of the servo motor 2, the end of the central axis (53) is fixedly connected to a fixed block (59), a side of the fixed block (59) close to the shielding member (5) is fixedly connected to an inclined plate (59A), a twist 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 twist bar; 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 rubber sleeve layers (583).

2. A cable insulation testing device according to claim 1, 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 side wall of the box body (1), and the sliding groove slides with the sliding bar of the moving block (52).

3. A cable insulation testing device according to claim 2, characterized in that: A circular hole adapted to 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).

4. A cable insulation testing device according to claim 1, 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.

5. 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 to 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); the bottom end of the mounting seat (25) is fixedly connected to a limiting block (26); 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.

6. A cable insulation testing device according to claim 5, 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, which is used to prevent the passing cable from slipping.

7. 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 test. The anti-drop component includes a through plate (61), and two vertical pieces (62) are provided 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).

8. A cable insulation testing device according to claim 7, 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 the other upright member (62), wherein the upright member (62) fixedly connected to the steel wires (63) is detachably mounted.

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