An insulation monitoring device for a switchgear cable line

Abstract

The application belongs to the field of insulation monitoring, and particularly relates to an insulation monitoring device for a cable line of a power distribution cabinet. The device is capable of precisely monitoring the fine cracks and damages of the cable line. The device comprises a base plate, a fixing shell fixed to one end surface of the base plate, a rotating shaft rotatably connected to the other end surface of the base plate, a winding disc fixedly sleeved on the outer periphery of the rotating shaft, a flaw detection device arranged in the fixing shell, and a zigzag mechanism acting on the cable line passing through the fixing shell. The zigzag mechanism comprises a movable contact component and a driving component. The device improves the accuracy of the flaw detection device in monitoring the fine cracks on the surface of the cable line, and the degree of zigzag of the cable line gradually decreases when the cable line is wound, thereby facilitating the user to wind the cable line. Therefore, the device not only improves the insulation monitoring effect, but also improves the convenience when the cable line is wound.

Description

Technical Field

[0001] This invention belongs to the field of insulation monitoring, specifically an insulation monitoring device for cable lines in a power distribution cabinet. Background Technology

[0002] Over long-term use, the cable lines in the distribution cabinet are prone to problems such as damaged sheaths, exposed cores, or cracked sheaths. These problems can significantly affect the insulation resistance to ground, leading to overheating due to discharge to ground. Prolonged overheating can cause cable aging and even cable breakdown, necessitating the use of appropriate insulation monitoring devices.

[0003] In existing electrical distribution cabinet cable line insulation monitoring devices, a corresponding flaw detection device is used to locate insulation fault points and conditions when the cable line surface is in contact with the inner wall of the flaw detection device, under the action of the current transformer inside the device. However, in actual use, because the surface of the electrical distribution cabinet cable line is prone to fine cracks and damage, these fine cracks and damages are not easy for the flaw detection device to detect accurately, but they can also easily cause insulation faults. As a result, the monitoring effect of the insulation monitoring device is not good, which is not conducive to its use.

[0004] Therefore, the present invention provides an insulation monitoring device for cable lines in a power distribution cabinet. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the insulation monitoring device for cable lines of distribution cabinet according to the present invention includes a base plate, a fixed shell fixed at one side of one end surface of the base plate, a rotating shaft rotatably connected to the other side of one end surface of the base plate, a winding reel fixedly sleeved on the outer circumference of the rotating shaft, a flaw detection device disposed inside the fixed shell, and a bending mechanism acting on the cable line passing through the fixed shell.

[0007] The zigzag mechanism includes a movable contact component and a drive component;

[0008] The movable abutment assembly includes an opening extending through the surface of the substrate and one end surface of the fixed shell, an embedded shaft fixed inside the opening, a sliding seat slidably sleeved on the outer circumferential surface of the embedded shaft, a pulley component disposed at one end of the sliding seat, two clamping components disposed on the inner wall of the fixed shell at one side of the opening, a rotating rod rotatably connected to the other end surface of the substrate, two second spur gears fixedly sleeved on the outer circumferential surface of the rotating rod, a rack meshing on both sides of one of the second spur gears, two fixing plates fixed at the middle position of the two racks on opposite sides of each other, a connecting plate fixed at one end of the two racks on opposite sides of each other, and a second spring telescopic rod fixed on the other end surface of the substrate at one side of the opening.

[0009] Preferably, the driving assembly includes a rotating shaft rotatably connected to the base plate at the top center of the fixed shell, a rotating rod rotatably connected to one side of the rotating shaft, a first bevel gear fixedly sleeved on both sides of the outer circumferential surface of the rotating rod, two second bevel gears fixedly sleeved at one end of the outer circumferential surface of the rotating shaft and the other end of the outer circumferential surface of the rotating shaft, a first spur gear fixedly sleeved at the other end of the outer circumferential surface of the rotating shaft, an external gear ring rotatably connected to the other end surface of the base plate at the bottom of the first spur gear, and multiple sets of tooth block groups fixed to the inner circumferential surface of the external gear ring.

[0010] Preferably, one end of each of the two fixed plates extends into the interior of the opening at the adjacent position and is fixed to the surface of the sliding seat at the adjacent position; one end of the second spring telescopic rod is fixed to the surface of the connecting plate at the adjacent position; and the other second spur gear is meshed with multiple sets of tooth blocks.

[0011] Preferably, the first bevel gear is meshed with the second bevel gear at an adjacent position, and the first spur gear is meshed with the external gear ring.

[0012] Preferably, the pulley component includes a fixed rod fixed at one end of the sliding seat, two clamping plates disposed at one end of the fixed rod, a fixed column fixed at one end of the two clamping plates, a rotating wheel rotatably connected at the middle position of the two clamping plates, and a clamping groove formed on the outer circumferential surface of the rotating wheel, wherein the fixed rod is fixed to the surface of one of the clamping plates.

[0013] Preferably, the clamping component includes a first spring telescopic rod fixed to the inner wall of the fixed housing at a position on one side of the opening, and a clamping wheel seat fixed to one end of the two first spring telescopic rods that are close to each other.

[0014] Preferably, it further includes a support and cleaning structure acting on the flaw detection device and one end of the cavity of the fixed shell. The support and cleaning structure includes a motor fixed to the bottom of the fixed shell, a connecting rod rotatably connected to one end surface of the base plate located on both sides of the motor, a third bevel gear fixedly sleeved on the outer periphery of the connecting rod, a fourth bevel gear fixedly sleeved on the outer periphery of the motor, a support assembly disposed on one side of one of the connecting rods, and an exhaust assembly disposed on the other side of the connecting rod.

[0015] Preferably, the support assembly includes a first rotating disk rotatably connected to the base plate at the bottom of the flaw detection device, a first sleeve fitted to one side of the first rotating disk, a first abutting rod inserted through the first sleeve, two support plates fixed to the top of the first sleeve, and a fifth bevel gear fixed to the bottom of the outer peripheral surface and the outer peripheral surface of the connecting rod near the first rotating disk. One end of the first abutting rod is fixed to the surface of the first rotating disk. The flaw detection device is slidably connected to the bottom of the inner wall of the fixed shell. The top of the support plate is fixed to the surface of the bottom of the flaw detection device. The two fifth bevel gears are meshed together.

[0016] Preferably, the exhaust component includes a sleeve fixed to the inner cavity of the fixed shell at a position on one side of the first spring telescopic rod, a vertical rod slidably inserted inside the sleeve, a piston fixed to the top of the vertical rod, an exhaust pipe connected to the top of the sleeve and a connecting pipe connected to both sides of the outer circumferential surface of the connecting pipe, a second rotating disk fixed to one side surface of another third bevel gear, a second sleeve fitted to the surface of the second rotating disk, and a second abutting rod inserted inside the second sleeve. The bottom of the vertical rod is fixed to the top surface of the second sleeve, and one side of the second abutting rod is fixed to the surface of the second rotating disk.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The insulation monitoring device for cable lines in a distribution cabinet according to the present invention makes the cracks and damage in the cable line more obvious by repeatedly bending the cable into an "S" shape during monitoring, thereby improving the accuracy of the flaw detection device in detecting minute cracks in the cable sheath. Furthermore, the device can gradually reduce the degree of bending of the cable line when winding it up, making it easier for the user to wind up the cable line. This not only improves the insulation monitoring effect of the device, but also improves the convenience of winding up the cable.

[0019] 2. The insulation monitoring device for cable lines in a distribution cabinet according to the present invention enables two connecting rods to rotate by starting a motor, thereby allowing the flaw detection device to reciprocate in the horizontal direction and the piston to reciprocate in the vertical direction. This allows the flaw detection device to repeatedly detect the parts through which the cable line passes, thus improving the monitoring accuracy of the flaw detection device. Furthermore, the vertical movement of the piston causes a change in air pressure inside the sleeve, and the airflow discharged from the air outlet and connecting pipe can clean the dust adhering to the surface of the cable line, thereby preventing dust from affecting the detection. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front.

[0022] Figure 2 In this invention Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 This is a schematic cross-sectional view of the three-dimensional structure in the frontal view of this invention;

[0024] Figure 4 In this invention Figure 3 Enlarged structural diagram at point B;

[0025] Figure 5 In this invention Figure 3 Enlarged structural diagram at point C;

[0026] Figure 6 This is a three-dimensional structural diagram of a partial structure in this invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the invention viewed from above;

[0028] Figure 8 This is a three-dimensional structural diagram of the invention from the rear view direction;

[0029] Figure 9 In this invention Figure 8 Enlarged schematic diagram of the structure at point D.

[0030] In the diagram: 1. Base plate; 2. Fixed shell; 3. Rotating shaft; 4. Rewinding reel; 5. Opening; 6. Embedded shaft; 7. Sliding seat; 8. Fixed rod; 9. Clamping plate; 10. Rotating wheel; 11. Clamping groove; 12. Fixed column; 13. First spring telescopic rod; 14. Clamping wheel seat; 15. External gear ring; 16. Rotating shaft; 17. First spur gear; 18. Rotating rod; 19. Second spur gear; 20. Gear block assembly; 21. Rack; 22. Connecting plate; 23. Second spring telescopic rod; 24. Rotating rod; 25. First bevel gear; 26. Second bevel gear; 27. Motor; 28. Connecting rod; 29. ​​Third bevel gear; 30. Fourth bevel gear; 31. First rotating disk; 32. First sleeve; 33. First abutting rod; 34. Support plate; 35. Second rotating disk; 36. Second sleeve; 37. Second abutting rod; 38. Upright rod; 39. Sleeve; 40. Piston; 41. Air outlet pipe; 42. Connecting pipe; 43. Fixing plate; 44. Flaw detection device; 45. Fifth bevel gear. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1:

[0033] like Figures 1 to 9 As shown, an insulation monitoring device for a distribution cabinet cable line according to an embodiment of the present invention includes a base plate 1, a fixed shell 2 fixed at one end of the surface of the base plate 1, a rotating shaft 3 rotatably connected to the other end of the surface of the base plate 1, a winding reel 4 fixedly sleeved on one end of the outer peripheral surface of the rotating shaft 3, a flaw detection device 44 disposed inside the fixed shell 2, and a bending mechanism acting on the cable line passing through the fixed shell 2.

[0034] The device is fixed at the cable outlet of the distribution cabinet, and the cable is passed through the fixed shell 2. One end of the cable is coiled around the surface of the winding reel 4 for winding. During the winding process, the cable gradually passes through the fixed shell 2 and is wound onto the surface of the winding reel 4. Inside the fixed shell 2, the cable is bent back and forth in an "S" shape by the bending mechanism. This can magnify the cracks in the cable sheath. Under the action of the flaw detection device 44, the insulation of the cable is tested to detect the existing cracks.

[0035] like Figures 1 to 9 As shown, the zigzag mechanism includes a movable contact component and a drive component;

[0036] The drive assembly includes a rotating shaft 16 that is rotatably connected to the base plate 1 at the top center of the fixed shell 2; a rotating rod 24 that is rotatably connected to one side of the rotating shaft 16; a first bevel gear 25 that is fixedly sleeved at both ends of the outer circumferential surface of the rotating rod 24; two second bevel gears 26 that are fixedly sleeved at one end of the outer circumferential surface of the rotating shaft 16 and the other end of the outer circumferential surface of the rotating shaft 16; a first spur gear 17 that is fixedly sleeved at the other end of the outer circumferential surface of the rotating shaft 16; an outer gear ring 15 that is rotatably connected to the other end surface of the base plate 1 at the bottom of the first spur gear 17; and multiple sets of tooth block groups 20 that are fixed to the inner circumferential surface of the outer gear ring 15. The first bevel gear 25 and the adjacent second bevel gear 26 are meshed together, and the first spur gear 17 and the outer gear ring 15 are meshed together.

[0037] When the rotating shaft 3 is rotated, the rotating rod 24 can rotate under the meshing action between the adjacent first bevel gear 25 and second bevel gear 26, thereby causing the rotating shaft 16 to rotate under the meshing action between the other first bevel gear 25 and second bevel gear 26, thereby causing the first spur gear 17 to rotate, and thus causing the multiple sets of tooth blocks 20 to perform circular motion under the meshing action between the first spur gear 17 and the external gear ring 15.

[0038] like Figures 1 to 9 As shown, the movable contact assembly includes an opening 5 through which the substrate 1 and one end surface of the fixed housing 2 are formed; an embedded shaft 6 fixed inside the opening 5; a sliding seat 7 slidably sleeved on the outer circumferential surface of the embedded shaft 6; a pulley component disposed at one end of the sliding seat 7; two clamping components disposed on the inner wall of the fixed housing 2 on one side of the opening 5; a rotating rod 18 rotatably connected to the other end surface of the substrate 1; two second spur gears 19 fixedly sleeved on the outer circumferential surface of the rotating rod 18; a rack 21 meshing on both sides of one of the second spur gears 19; and two... Two fixing plates 43 are located at the middle position of the surface of the rack 21 that is far apart from each other; a connecting plate 22 is fixed at one end of the surface of the two racks 21 that is far apart from each other; and a second spring telescopic rod 23 is fixed at the other end of the base plate 1 located on the side of the opening 5. One end of the two fixing plates 43 extends into the interior of the opening 5 at the adjacent position and is fixed to the surface of the sliding seat 7 at the adjacent position. One end of the second spring telescopic rod 23 is fixed to the surface of the connecting plate 22 at the adjacent position. Another second spur gear 19 is meshed with multiple sets of tooth blocks 20.

[0039] The cable is passed through the fixed housing 2 and then through the middle position of the two sets of clamping components to position the cable. One end of the cable passes through the monitoring point of the flaw detection device 44 and extends out of the outside of the fixed housing 2 and is wound up to the outer circumference of the winding reel 4. When the cable is placed in the middle position of the two sets of clamping components, it is placed on the top of one pulley component and the bottom of the other pulley component.

[0040] When actually monitoring the cable line, in the initial state when the user has not rotated the rotating shaft 3, one of the two pulley assemblies is at the top of the inner cavity of the fixed housing 2, and the other is at the bottom of the inner cavity of the fixed housing 2. This causes the cable line to bend into an "S" shape, which magnifies the small cracks and damage on the surface of the cable line, making it easier for current to flow out of the damaged area and be collected by the current transformer inside the flaw detection device 4, thereby improving the monitoring accuracy of the flaw detection device 44. When it is necessary to wind up the cable line, rotating the rotating shaft 3 drives the winding roller 4 to move, which causes the outer gear ring 15 to rotate and cause multiple sets of gear blocks 20 to perform circumferential motion. When one set of gear blocks 20 meshes with the adjacent second spur gear 19, the rotating rod 18 rotates by a certain angle. During the rotation of the rotating rod 18, another second spur gear 19 meshes with two racks 21, which causes the two racks 21 to move in the vertical direction. Under the connection of the fixed plate 43, the sliding seat 7 slides along the outer circumference of the embedded shaft 6 in the adjacent position and drives the pulley component in the adjacent position to move. Under the connection of the connecting plate 22, the second spring telescopic rod 23 in the adjacent position deforms, thereby allowing the two pulley components to move towards the middle position of the inner cavity of the fixed shell 2. This reduces the tortuosity of the cable line until the cable line is in a horizontal state, thereby gradually reducing the resistance encountered when winding the cable line. When the second spur gear 19 moves away from one of the meshing tooth blocks 20, the rack 21 can be reset under the action of the rebound force of the second spring telescopic rod 23. The user can then observe the inner cavity of the fixed shell 2 through the observation window on the surface of the fixed shell 2. After seeing the cable line bend back into an "S" shape, the user stops rotating the rotating shaft 3. By intermittently rotating the rotating shaft 3, the user can gradually monitor the cable line and wind the monitored cable to the outer circumference of the winding roller.

[0041] like Figures 1 to 9 As shown, the pulley assembly includes a fixed rod 8 fixed at one end of the sliding seat 7, two clamping plates 9 disposed at one end of the fixed rod 8, a fixed column 12 fixed at one end of the two clamping plates 9, a rotating wheel 10 rotatably connected to the middle position of the two clamping plates 9, and a clamping groove 11 opened on the outer circumferential surface of the rotating wheel 10. The fixed rod 8 is fixed to the surface of one of the clamping plates 9.

[0042] When the cable passes through the two sets of pulley components, it is positioned at the end of the rotating wheel 10 away from the fixed post 12. When the cable is bent, it is positioned in the inner cavity of the clamping groove 11. Under the action of the inner surface of the clamping groove 11, the cable is prevented from sliding along the axis of the fixed rod 8 when it is bent. Furthermore, since the rotating wheel 10 can rotate, the friction between the cable and the inner surface of the clamping groove 11 is reduced, making it easier for the winding reel 4 to wind up the cable.

[0043] like Figures 1 to 9 As shown, the clamping component includes a first spring telescopic rod 13 fixed to the inner wall of the fixed shell 2 at one side of the opening 5 and a clamping wheel seat 14 fixed to one end of the two first spring telescopic rods 13 close to each other.

[0044] When the cable passes through the middle position of the two sets of clamping components, it can be clamped by the two adjacent clamping wheel seats 14 under the action of the rebound force of the first spring telescopic rod 13, so that the cable can pass through the monitoring point of the flaw detection device 44. The middle position of the clamping wheel seat 14 can rotate to facilitate the winding reel 4 to wind up the cable.

[0045] Example 2:

[0046] While the above method solves the problem of minor cracks and damage easily appearing on the surface of the cable lines in the distribution cabinet, which are not easy for the flaw detection device to accurately detect, in practice, because the cable line passing through the monitoring position of the flaw detection device has a certain length during each rotation of the rotating shaft 3, and the time the cable passes through the monitoring position of the flaw detection device 44 is short, the flaw detection device can only monitor each position on the surface of the cable line for a short time, resulting in a certain limitation in monitoring accuracy. In addition, the surface of the cable line recovered from the outside will have a certain amount of dust attached, which will also affect the monitoring accuracy of the flaw detection device 44.

[0047] Therefore, referring to Figure 1-9 As shown, it is worth noting that it also includes a support and cleaning structure that acts on the flaw detection device 44 and one end of the inner cavity of the fixed shell 2.

[0048] The support cleaning structure includes a motor 27 fixed to the bottom of the fixed shell 2, a connecting rod 28 rotatably connected to one end surface of the base plate 1 at positions on both sides of the motor 27, a third bevel gear 29 fixedly sleeved on the outer periphery of the connecting rod 28, a fourth bevel gear 30 fixedly sleeved on the outer periphery of the motor 27, a support assembly disposed on one side of one of the connecting rods 28, and an exhaust assembly disposed on one side of the other connecting rod 28.

[0049] When the user stops rotating the rotating shaft 3, the motor 27 is turned on, causing the output end of the motor 27 to drive the fourth bevel gear 30 to rotate. This allows the two connecting rods 28 to rotate synchronously under the meshing action between the fourth bevel gear 30 and the two third bevel gears 29, thereby driving the operation of the support assembly and the exhaust assembly.

[0050] Therefore, referring to Figure 1-9 As shown, it is worth noting that the support assembly includes a first rotating disk 31 rotatably connected to the base plate 1 at the bottom of the flaw detection device 44, a first sleeve 32 fitted to one side of the first rotating disk 31, a first abutting rod 33 inserted through the first sleeve 32, two support plates 34 fixed to the top of the first sleeve 32, and a fifth bevel gear 45 fixed to the bottom of the outer peripheral surface of the 31 and the outer peripheral surface of the connecting rod 28 near the first rotating disk 31. One end of the first abutting rod 33 is fixed to the surface of the first rotating disk 31. The flaw detection device 44 is slidably connected to the bottom of the inner wall of the fixed shell 2. The top of the support plate 34 is fixed to the bottom surface of the flaw detection device 44. The two fifth bevel gears 45 are meshed together.

[0051] When the connecting rod 28 rotates, and under the meshing action between the two fifth bevel gears 45, the disk 31 of the first yellow diamond rotates, thereby enabling the first abutting rod 33 to perform circular motion. Under the action of the first abutting rod 33 against the first sleeve 32, the support plate 34 can reciprocate in the horizontal direction, thereby enabling the flaw detection device 44 to reciprocate in the horizontal direction. This allows for repeated detection of the position of the cable line each time it passes through the flaw detection device 44, thereby further improving the monitoring accuracy of the flaw detection device 44 and further reducing monitoring errors.

[0052] Therefore, referring to Figure 1-9 As shown, it is worth noting that the exhaust component includes a sleeve 39 fixed to the inner cavity of the fixed shell 2 at one side of the first spring telescopic rod 13, a vertical rod 38 slidably inserted inside the sleeve 39, a piston 40 fixed to the top of the vertical rod 38, an exhaust pipe 41 connected to the top of the sleeve 39 and a connecting pipe 42 connected to both sides of the outer circumferential surface of the connecting pipe 42, a second rotating disk 35 fixed to one side of another third bevel gear 29, a second sleeve 36 fitted to the surface of the second rotating disk 35, and a second abutting rod 37 inserted inside the second sleeve 36. The bottom of the vertical rod 38 is fixed to the top surface of the second sleeve 36, and one side of the second abutting rod 37 is fixed to the surface of the second rotating disk 35.

[0053] When the other connecting rod 28 rotates, the second abutting rod 37 can reciprocate. Under the action of the second abutting rod 37 against the second sleeve 36, the upright rod 38 can move vertically. This allows the upright rod 38 to drive the piston 40 and the inner cavity of the sleeve 39 to reciprocate, thereby releasing airflow from the air outlet 41. The connecting pipe 42 allows for the range of airflow, which in turn cleans the dust adhering to the surface of the cable line under the action of the airflow, thus preventing the dust from affecting the cable line.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulation monitoring device for a distribution cabinet cable line, comprising a base plate (1), a fixed housing (2) fixed at one end surface of the base plate (1), a rotating shaft (3) rotatably connected to the other end surface of the base plate (1), a winding reel (4) fixedly sleeved on one end of the outer circumferential surface of the rotating shaft (3), and a flaw detection device (44) disposed inside the fixed housing (2), characterized in that... It also includes a bending mechanism that acts on the cable line passing through the fixed shell (2); The zigzag mechanism includes a movable contact component and a drive component; The movable contact assembly includes an opening (5) that passes through the surface of the substrate (1) and one end surface of the fixed shell (2), an embedded shaft (6) fixed inside the opening (5), a sliding seat (7) that is slidably sleeved on the outer periphery of the embedded shaft (6), a pulley component located at one end of the sliding seat (7), two clamping components located on the inner wall of the fixed shell (2) on one side of the opening (5), a rotating rod (18) that is rotatably connected to the other end surface of the substrate (1), two second spur gears (19) fixedly sleeved on the outer periphery of the rotating rod (18), a rack (21) meshing on both sides of one of the second spur gears (19), two fixing plates (43) fixed at the middle position of the two racks (21) on the opposite side of each other, a connecting plate (22) fixed at one end of the two racks (21) on the opposite side of each other, and a second spring telescopic rod (23) fixed on the other end surface of the substrate (1) on one side of the opening (5).

2. The insulation monitoring device for cable lines in a distribution cabinet according to claim 1, characterized in that: The drive assembly includes a rotating shaft (16) that is rotatably connected to the base plate (1) at the top center of the fixed shell (2), a rotating rod (24) that is rotatably connected to one side of the rotating shaft (16), a first bevel gear (25) that is fixedly sleeved on both sides of the outer circumferential surface of the rotating rod (24), two second bevel gears (26) that are fixedly sleeved at one end of the outer circumferential surface of the rotating shaft (16) and the other end of the outer circumferential surface of the rotating shaft (3), a first spur gear (17) that is fixedly sleeved at the other end of the outer circumferential surface of the rotating shaft (16), an outer gear ring (15) that is rotatably connected to the other end of the base plate (1) at the bottom of the first spur gear (17), and multiple sets of tooth block groups (20) that are fixed to the inner circumferential surface of the outer gear ring (15).

3. The insulation monitoring device for cable lines in a distribution cabinet according to claim 2, characterized in that: One end of each of the two fixed plates (43) extends into the interior of the adjacent opening (5) and is fixed to the surface of the adjacent sliding seat (7). One end of the second spring telescopic rod (23) is fixed to the surface of the adjacent connecting plate (22). Another second spur gear (19) is meshed with multiple sets of tooth blocks (20).

4. The insulation monitoring device for cable lines in a distribution cabinet according to claim 3, characterized in that: The first bevel gear (25) is meshed with the second bevel gear (26) at the adjacent position, and the first spur gear (17) is meshed with the external gear ring (15).

5. The insulation monitoring device for cable lines in a distribution cabinet according to claim 1, characterized in that: The pulley assembly includes a fixed rod (8) fixed at one end of the sliding seat (7), two clamping plates (9) disposed at one end of the fixed rod (8), a fixed column (12) fixed at one end of the two clamping plates (9), a rotating wheel (10) rotatably connected to the middle position of the two clamping plates (9), and a clamping groove (11) opened on the outer circumferential surface of the rotating wheel (10). The fixed rod (8) is fixed to the surface of one of the clamping plates (9).

6. The insulation monitoring device for cable lines in a distribution cabinet according to claim 1, characterized in that: The clamping component includes a first spring telescopic rod (13) fixed to the inner wall of the fixed shell (2) at a position on one side of the opening (5) and a clamping wheel seat (14) fixed to one end of the two first spring telescopic rods (13) close to each other.

7. The insulation monitoring device for cable lines in a distribution cabinet according to claim 1, characterized in that: It also includes a support cleaning structure acting on the flaw detection device (44) and one end of the cavity of the fixed shell (2). The support cleaning structure includes a motor (27) fixed to the bottom of the fixed shell (2), a connecting rod (28) rotatably connected to one end surface of the base plate (1) located on both sides of the motor (27), a third bevel gear (29) fixedly sleeved on the outer periphery of the connecting rod (28), a fourth bevel gear (30) fixedly sleeved on the outer periphery of the motor (27), a support assembly set on one side of one of the connecting rods (28), and an exhaust assembly set on one side of the other connecting rod (28).

8. The insulation monitoring device for cable lines in a distribution cabinet according to claim 7, characterized in that: The support assembly includes a first rotating disk (31) rotatably connected to the base plate 1 at the bottom of the flaw detection device 44, a first sleeve (32) fitted to one side of the first rotating disk (31), a first abutting rod (33) inserted through the first sleeve (32), two support plates (34) fixed to the top of the first sleeve (32), and a fifth bevel gear (45) fixed to the bottom of the outer peripheral surface of the (31) and the outer peripheral surface of the connecting rod (28) near the first rotating disk (31). One end of the first abutting rod (33) is fixed to the surface of the first rotating disk (31). The flaw detection device (44) is slidably connected to the bottom of the inner wall of the fixed shell (2). The top of the support plate (34) is fixed to the surface of the bottom of the flaw detection device (44). The two fifth bevel gears (45) are meshed together.

9. The insulation monitoring device for cable lines in a distribution cabinet according to claim 7, characterized in that: The exhaust component includes a sleeve (39) fixed in the inner cavity of the fixed shell (2) at one side of the first spring telescopic rod (13), a vertical rod (38) slidably inserted inside the sleeve (39), a piston (40) fixed to the top of the vertical rod (38), an exhaust pipe (41) connected to the top of the sleeve (39) and a connecting pipe (42) connected to both sides of the outer peripheral surface of the connecting pipe (42), a second rotating disk (35) fixed to one side of another third bevel gear (29), a second sleeve (36) fitted to the surface of the second rotating disk (35), and a second abutting rod (37) inserted inside the second sleeve (36). The bottom of the vertical rod (38) is fixed to the top surface of the second sleeve (36), and one side of the second abutting rod (37) is fixed to the surface of the second rotating disk (35).

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