DC electric leakage monitoring device

Abstract

The invention relates to the technical field of electric leakage monitoring, in particular to a direct-current electric leakage monitoring device which comprises a mounting frame and a supporting mechanism, threaded rods are rotationally connected to the two ends of the mounting frame, electric leakage detectors are mounted on the opposite cambered surfaces of a first clamping plate and a second clamping plate, and a control mechanism is arranged on the side, close to a connecting frame, of a movable seat. Fixed teeth are fixedly installed on the two sides of the movable block, the auxiliary mechanism comprises movable teeth slidably connected with the movable assembly, and an adjusting mechanism is arranged between the control mechanism and the clamping assembly. Through mutual cooperation of the control mechanism, the auxiliary mechanism and the adjusting mechanism, the cambered surface end of the clamping assembly is made to be close to or far away from each other, a to-be-monitored cable is clamped, the electric leakage monitor makes contact with the cable, meanwhile, the position of the cable can be limited, and the situation that the accuracy of a monitoring result is affected due to the fact that the cable shakes due to external force factors is avoided; the supporting mechanism can be controlled to move under the action of the threaded rod, the position is adjusted to replace the to-be-monitored object, and the flexibility of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of leakage monitoring, in particular to a direct current leakage monitoring device. Background Art

[0002] DC leakage monitoring refers to the process of detecting and monitoring leakage conditions in a DC system through specific equipment and technology. It is an important link in ensuring the safe and stable operation of a DC system. It can promptly detect and deal with these potential safety hazards, ensure the safety of electrical equipment, and monitor the leakage current of the equipment in real time. When the leakage current exceeds the safety threshold, the circuit is immediately cut off to prevent electric shock accidents. By monitoring and controlling the leakage current through DC leakage, the reliability of the equipment can be improved, the incidence of equipment failures can be reduced, and leakage problems can be detected in a timely manner. Measures can be taken to repair them, thereby extending the service life of the equipment. Accurately monitor leakage conditions, detect and repair leakage points in a timely manner, thereby reducing energy waste and improving energy efficiency.

[0003] In actual cable monitoring, the cable may shake due to external factors, such as wind or natural falling, and the shaking may cause the monitoring instrument to be unable to read data stably, thereby affecting the accuracy of the monitoring results, interfering with the measurement signal, and causing deviations in the measurement value. Therefore, it is necessary to maintain the stability of the monitored object and the monitoring instrument during monitoring. Since the diameters of the cables to be monitored may also vary, in order to ensure the accuracy of the monitoring results when monitoring the cables, it is necessary to be able to fix them according to the different diameters of the cables. At the same time, in actual applications, cables are usually grouped in groups of several, and monitoring is usually not performed on only a single cable. The monitoring target may be replaced when necessary. While ensuring that it can adapt to the fixation of cables of different diameters, it is also necessary to be able to flexibly replace the monitoring target to improve practicality.

[0004] Therefore, the present invention provides a DC leakage monitoring device. Summary of the invention

[0005] In view of the problem in the prior art that monitoring cables of different diameters and flexible replacement of monitoring objects may affect the accuracy of monitoring results, the present invention provides a DC leakage monitoring device.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a DC leakage monitoring device comprises a mounting frame and a supporting mechanism, threaded rods are rotatably connected at both ends of the mounting frame, a driving motor is fixedly connected to the bottom end of the threaded rod, guide rods are respectively arranged on both sides of the threaded rod, and both ends of the guide rods are fixedly connected to the mounting frame, the supporting mechanism comprises a movable seat and a clamping assembly, the threaded rod passes through the movable seat and is threadedly connected to the movable seat, the guide rod passes through the movable seat and is slidably connected to the movable seat, the clamping assembly comprises a first clamping plate and a second clamping plate, leakage detectors are installed on the arc surfaces opposite to the first clamping plate and the second clamping plate, gear columns are respectively fixedly connected to one end of the first clamping plate and the second clamping plate close to the movable seat, a control mechanism is arranged on one side of the movable seat close to the connecting frame, the control mechanism comprises a movable assembly, the movable assembly comprises a movable block and a first connecting block fixedly connected to the movable block, fixed teeth are fixedly installed on both sides of the movable block, auxiliary mechanisms are respectively arranged on both sides of the movable assembly, the auxiliary mechanism comprises movable teeth slidably connected to the movable assembly, an adjustment mechanism is arranged between the control mechanism and the clamping assembly, and the adjustment mechanism cooperates with the first connecting block; A clamping assembly, which is configured to clamp the cable to be monitored under the action of the control mechanism and the adjustment mechanism, thereby monitoring the cable; a control mechanism configured to change the state of the clamping assembly by controlling the movable assembly; An adjustment mechanism, which is assembled to cooperate with the control mechanism to complete the movement of the clamping assembly; The auxiliary mechanism is assembled to cooperate with the gear column through the movable teeth, and the auxiliary gear column is meshed with the fixed teeth, so that the gear column starts to rotate under the drive of the movable component.

[0007] Preferably, the support mechanism also includes a connecting frame fixedly connected to the side of the movable seat away from the mounting frame, the clamping assembly is movably connected to the connecting frame, the ends of the first clamping plate and the second clamping plate away from the gear column are both arranged with arc surfaces, and the weight of the arc surface end of the clamping assembly is the same as the weight of one end connected to the gear column, and the gear column is arranged with non-full teeth.

[0008] Preferably, the clamping assembly also includes a first sliding block fixedly connected to both sides of the first clamping plate and the second clamping plate, both ends of the gear column fixedly connected to the first clamping plate are fixedly connected to the first connecting shaft, and both ends of the gear column fixedly connected to the second clamping plate are fixedly connected to the second connecting shaft.

[0009] Preferably, the adjustment mechanism comprises a first slide groove, a second slide groove and a third slide groove which are opened on two opposite inner walls of the connecting frame, and a second connecting block is fixedly connected to one side of the lower end of the first clamping plate close to the second clamping plate.

[0010] Preferably, the first slide groove is located on the side of the second slide groove close to the movable seat, the third slide groove is an arc-shaped groove, the second slide groove consists of a straight groove section and an arc-shaped groove section, and the straight groove sections of the first slide groove and the second slide groove are arranged in parallel and have the same length.

[0011] Preferably, the first sliding block cooperates with the second sliding groove and the third sliding groove, the first connecting shaft cooperates with the first sliding groove, the third sliding groove takes the second connecting shaft as the center, and the arc groove section of the second sliding groove takes the end of the first sliding groove away from the second clamping plate as the center.

[0012] Preferably, the control mechanism also includes a mounting groove opened on a side of the movable seat close to the connecting frame, a second slider is slidably connected in the mounting groove, a first spring is fixedly connected to the bottom of the mounting groove, an end of the first spring away from the side wall of the mounting groove is fixedly connected to the second slider, an electric telescopic rod is fixedly installed on a side of the second slider away from the mounting groove, and an end of the electric telescopic rod away from the second slider is fixedly connected to the movable block.

[0013] Preferably, a sensor is installed on one side of the lower end of the first connecting block close to the first clamping plate, the sensor is electrically connected to the electric telescopic rod, both sides of the first connecting block close to the first clamping plate and the second clamping plate are provided with inclined surfaces, the side of the second connecting block close to the first connecting block is provided with an inclined surface, the second connecting block cooperates with the first connecting block, and both sides of the end of the movable block away from the electric telescopic rod are provided with inclined surfaces.

[0014] Preferably, the auxiliary mechanism also includes fixed grooves opened on both sides of the movable block, a group of limit rods are fixedly connected in the fixed grooves, the limit rods slide through the movable teeth, the movable teeth are slidably connected to the fixed grooves, the movable teeth are always located between two adjacent teeth of the gear column, and a second spring is sleeved on the outer wall of the limit rod, one end of the second spring is fixedly connected to the movable block, and the other end is fixedly connected to the movable teeth.

[0015] Preferably, the first spring is in a compressed state in a normal state, and the second spring is in a stretched state in a normal state.

[0016] Beneficial effects of the present invention: (1) The DC leakage monitoring device described in the present invention, through the cooperation of the control mechanism, the auxiliary mechanism and the adjustment mechanism, makes the arc end of the clamping assembly approach or move away, clamps the cable to be monitored, makes the leakage monitor contact with the cable, and at the same time limits the position of the cable to prevent the cable from shaking due to external force factors, thereby affecting the accuracy of the monitoring result. Under the action of the threaded rod, the support mechanism can be controlled to move, adjust the position to replace the object to be monitored, and increase the flexibility of the device.

[0017] (2) In the DC leakage monitoring device described in the present invention, the straight groove sections of the first slide groove and the second slide groove can adapt to cables of different diameters. When the clamping component clamps the cable, it will automatically adjust according to the diameter of the clamped cable and contact the cable, so that the movable component is fixed in the corresponding position to ensure the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 A schematic diagram of a support mechanism provided by the present invention; Figure 3 A schematic diagram of the connection between the support mechanism and the control mechanism provided by the present invention; Figure 4 A schematic diagram of the adjustment mechanism provided by the present invention; Figure 5 A cross-sectional view of the support mechanism provided by the present invention; Figure 6 A schematic diagram of the connection between the control mechanism and the clamping assembly provided by the present invention; Figure 7 A schematic diagram of the structure of the clamping assembly and the movable assembly provided by the present invention; Figure 8 for Figure 7 Enlarged view of point A.

[0020] In the figure: 1. mounting frame; 2. threaded rod; 3. guide rod; 4. supporting mechanism; 41. movable seat; 42. connecting frame; 43. clamping assembly; 431. first clamping plate; 432. second clamping plate; 433. gear column; 434. first connecting shaft; 435. second connecting shaft; 436. first slider; 5. control mechanism; 51. mounting groove; 52. second slider; 53. first spring; 54. electric telescopic rod; 55. movable assembly; 551. movable block; 552. first connecting block; 553. fixed tooth; 6. auxiliary mechanism; 61. fixed groove; 62. limit rod; 63. movable tooth; 64. second spring; 7. adjusting mechanism; 71. first slide groove; 72. second slide groove; 73. third slide groove; 74. second connecting block. DETAILED DESCRIPTION

[0021] 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.

[0022] Example: Figure 1-Figure 8As shown, the DC leakage monitoring device described in the present invention includes a mounting frame 1 and a supporting mechanism 4, threaded rods 2 are rotatably connected at both ends of the mounting frame 1, the bottom end of the threaded rod 2 is fixedly connected to a driving motor, guide rods 3 are respectively arranged on both sides of the threaded rod 2, and both ends of the guide rod 3 are fixedly connected to the mounting frame 1, the supporting mechanism 4 includes a movable seat 41 and a clamping assembly 43, the threaded rod 2 passes through the movable seat 41 and is threadedly connected to the movable seat 41, the guide rod 3 passes through the movable seat 41 and is slidably connected to the movable seat 41, the clamping assembly 43 includes a first clamping plate 431 and a second clamping plate 432, the arc surfaces opposite to the first clamping plate 431 and the second clamping plate 432 are installed with leakage monitors, the first clamping plate 431 and the second clamping plate 432 are respectively fixedly connected to the ends of the movable seat 41, and a control mechanism 5 is arranged on the side of the movable seat 41 close to the connecting frame 42, and the control mechanism 5 includes a movable assembly 55, and the movable assembly 55 includes a movable block 551 and a movable block 552. and a first connecting block 552 fixedly connected to the movable block 551, fixed teeth 553 are fixedly installed on both sides of the movable block 551, auxiliary mechanisms 6 are respectively arranged on both sides of the movable component 55, the auxiliary mechanism 6 includes movable teeth 63 slidably connected to the movable component 55, an adjusting mechanism 7 is arranged between the control mechanism 5 and the clamping component 43, and the adjusting mechanism 7 cooperates with the first connecting block 552; the clamping component 43 is equipped to clamp the cable to be monitored under the action of the control mechanism 5 and the adjusting mechanism 7, so as to monitor the cable; the control mechanism 5 is equipped to change the state of the clamping component 43 by controlling the movable component 55; the adjusting mechanism 7 is equipped to cooperate with the control mechanism 5 to complete the movement of the clamping component 43; the auxiliary mechanism 6 is equipped to cooperate with the gear column 433 through the movable teeth 63, and the auxiliary gear column 433 is meshed with the fixed teeth 553, so that the gear column 433 starts to rotate under the drive of the movable component 55.

[0023] In this embodiment, the electric telescopic rod 54 and the driving motor are started, and the electric telescopic rod 54 is extended so that the movable component 55 cooperates with the clamping component 43, thereby making the clamping component 43 movable, and the arc ends of the first clamping plate 431 and the second clamping plate 432 move away from each other, so that the arc ends of the first clamping plate 431 and the second clamping plate 432 are close to the mounting frame 1, so as to prevent the clamping component 43 from being involved in the cable when the support mechanism 4 moves. The driving motor makes the threaded rod 2 rotate, and the support mechanism 4 is adjusted to the desired position according to the position of the cable and the actual use requirements. During the movement of the support mechanism 4, the guide rod 3 can ensure the stability of the support mechanism 4 Qualitatively, when the support mechanism 4 is in the moving state, the arc-surface ends of the first clamping plate 431 and the second clamping plate 432 are moved away to ensure the smoothness of the movement. After being adjusted to the appropriate position, the electric telescopic rod 54 is controlled to shorten, so that the movable component 55 drives the first clamping plate 431 and the second clamping plate 432 to rotate and reset, clamping the cable to be monitored, and the leakage detector at the arc-surface end of the clamping component 43 contacts the cable to monitor the cable. When the monitored object needs to be replaced, the electric telescopic rod 54 is started again to move the clamping component 43 away, and the support mechanism 4 is moved under the drive of the threaded rod 2, and the control mechanism 5 is cooperated to re-clamp the target to be monitored.

[0024] like Figure 1-Figure 5As shown, the support mechanism 4 also includes a connecting frame 42 fixedly connected to a side of the movable seat 41 away from the mounting frame 1, a clamping assembly 43 is movably connected to the connecting frame 42, a first clamping plate 431 and a second clamping plate 432 are both arranged on an arc surface at one end away from the gear column 433, and the weight of the arc surface end of the clamping assembly 43 is the same as the weight of one end connected to the gear column 433, and the gear column 433 is arranged with non-full teeth; the clamping assembly 43 also includes a first slider 436 fixedly connected to both sides of the first clamping plate 431 and the second clamping plate 432, a first connecting shaft 434 is fixedly connected to both ends of the gear column 433 fixedly connected to the first clamping plate 431, and a second connecting shaft 435 is fixedly connected to both ends of the gear column 433 fixedly connected to the second clamping plate 432; the adjustment mechanism 7 includes a first The first and second slide grooves 71, 72 and 73 are connected to each other with a second connecting block 74 at the lower end of the first clamping plate 431 close to the second clamping plate 432. The first slide groove 71 is located on the side of the second slide groove 72 close to the movable seat 41. The third slide groove 73 is an arcuate groove. The second slide groove 72 is composed of a straight groove section and an arcuate groove section. The straight groove sections of the first slide groove 71 and the second slide groove 72 are arranged in parallel and have the same length. The first sliding block 436 cooperates with the second slide groove 72 and the third slide groove 73. The first connecting shaft 434 cooperates with the first slide groove 71. The third slide groove 73 takes the second connecting shaft 435 as the center of the circle. The arcuate groove section of the second slide groove 72 takes the end of the first slide groove 71 away from the second clamping plate 432 as the center of the circle. The first spring 53 is in a compressed state in a normal state, and the second spring 64 is in a stretched state in a normal state.

[0025] In the present embodiment, in the initial state, the arcuate ends of the first clamping plate 431 and the second clamping plate 432 are in a close state, at which time the first connecting shaft 434 is located at one end of the first slide groove 71 close to the second clamping plate 432, and the first sliding block 436 on the first clamping plate 431 is located at one end of the straight groove section of the second slide groove 72 close to the second clamping plate 432. When it is necessary to move the arcuate ends of the first clamping plate 431 and the second clamping plate 432 away from each other, the electric telescopic rod 54 is controlled to extend to drive the movable component 55 to move. During the movement, the first connecting block 552 pushes the second connecting block 74. Since the center position of the gear column 433 of the second clamping plate 432 remains unchanged, the first connecting shaft 434 is pushed away from the first slide groove 71 by the movable component 55. When the first connecting shaft 434 cannot continue to translate, the electric telescopic rod 54 continues to extend, so that the fixed tooth 553 engages with the gear column 433, thereby driving the gear column 433 to rotate, and the first sliders 436 on the first clamping plate 431 and the second clamping plate 432 slide in the second slide groove 72 and the third slide groove 73 respectively, and the arc surface ends of the first clamping plate 431 and the second clamping plate 432 approach the mounting frame 1. After the first clamping plate 431 and the second clamping plate 432 are fully opened, the threaded rod 2 controls the support mechanism 4 to move, so as to prevent the clamping assembly 43 from being involved in the cable.

[0026] like Figure 5-Figure 7 As shown, the control mechanism 5 also includes a mounting groove 51 opened on a side of the movable seat 41 close to the connecting frame 42, a second slider 52 is slidably connected in the mounting groove 51, a first spring 53 is fixedly connected to the bottom of the mounting groove 51, an end of the first spring 53 away from the side wall of the mounting groove 51 is fixedly connected to the second slider 52, an electric telescopic rod 54 is fixedly installed on the side of the second slider 52 away from the mounting groove 51, and an end of the electric telescopic rod 54 away from the second slider 52 is fixedly connected to the movable block 551; a sensor is installed on a side of the lower end of the first connecting block 552 close to the first clamping plate 431, the sensor is electrically connected to the electric telescopic rod 54, both sides of the first connecting block 552 close to the first clamping plate 431 and the second clamping plate 432 are inclined, the side of the second connecting block 74 close to the first connecting block 552 is inclined, the second connecting block 74 cooperates with the first connecting block 552, and both sides of the end of the movable block 551 away from the electric telescopic rod 54 are inclined.

[0027] In this embodiment, when the electric telescopic rod 54 is extended, the movable block 551 is pushed to move in the direction away from the second slider 52. In this process, the inclined surface of the first connecting block 552 abuts against the inclined surface of the second connecting block 74, pushing the second connecting block 74 to drive the first clamping plate 431 to move. At the same time, the movable block 551 is resisted by the gear column 433 of the second clamping plate 432, so that the movable block 551 moves away from the second slider 52 and also moves in the direction of the first clamping plate 431. The first spring 53 is stretched, and the second slider 52 moves. When the first clamping plate 431 cannot continue to translate, the electric telescopic rod 54 continues to extend to make the two gear columns 433 respectively mesh with the fixed teeth 553 on the movable block 551, thereby driving the first clamping plate 431 and the second clamping plate 432 to rotate at the same time. The length of the straight groove section of the first slide groove 71 and the second slide groove 72 is the adjustable range of the first clamping plate 431. For cables with different diameters, the first clamping plate 431 and the second clamping plate 432 can be adjusted. When clamping, the electric telescopic rod 54 is shortened, pulling the movable assembly 55 toward the direction of the second slider 52, driving the gear column 433 to rotate, and when the first slider 436 on the first clamping plate 431 slides to the connection between the arc groove section and the straight groove section of the second slide groove 72, according to the diameter of the clamped cable, when the arc surface ends of the first clamping plate 431 and the second clamping plate 432 are in contact with the cable, the first connecting shaft 434 and the first slider 436 on the first clamping plate 431 cannot continue to move toward the second clamping plate 43 2, when the sensor at the lower end of the first connecting block 552 detects that the vertical distance between the side of the lower end of the first clamping plate 431 close to the second clamping plate 432 and the sensor is at a fixed value, the electric telescopic rod 54 stops working, and when the first connecting shaft 434 and the first slider 436 on the first clamping plate 431 are both located at one end of the first slide groove 71 and the second slide groove 72 close to the second clamping plate 432, the first spring 53 is in a natural compression state, and the first spring 53 at other positions is in a tension state to varying degrees.

[0028] like Figure 7 and Figure 8 As shown, the auxiliary mechanism 6 also includes a fixed groove 61 opened on both sides of the movable block 551, and a group of limiting rods 62 are fixedly connected in the fixed groove 61. The limiting rods 62 slide through the movable teeth 63, and the movable teeth 63 are slidably connected to the fixed groove 61. The movable teeth 63 are always located between two adjacent teeth of the gear column 433. The outer wall of the limiting rod 62 is sleeved with a second spring 64, and one end of the second spring 64 is fixedly connected to the movable block 551, and the other end is fixedly connected to the movable teeth 63.

[0029] In this embodiment, in the initial state, the electric telescopic rod 54 is extended, and when the movable component 55 is away from the second slider 52, the movable tooth 63 is resisted by the teeth of the gear column 433, so that the second spring 64 is compressed, and the movable tooth 63 moves toward the electric telescopic rod 54. During this process, the movable block 551 moves toward the first clamping plate 431. When the movable tooth 63 abuts against the side of the fixed groove 61 close to the electric telescopic rod 54, the electric telescopic rod 54 continues to extend so that the fixed tooth 553 engages with the gear column 433, which can drive the first clamping plate 431 and the second clamping plate 432 to rotate. In the clamping state, the two movable teeth 63 are always located between two adjacent teeth of the gear column 433. The second spring 64 supports the movable tooth 63 to abut against the side of the fixed groove 61 away from the electric telescopic rod 54, thereby preventing the second clamping plate 432 from naturally falling due to gravity.

[0030] Working principle: When in use, the mounting frame 1 is installed on a fixed object, and the electric telescopic rod 54 is controlled to extend first, and the movable component 55 moves in a direction away from the second slider 52, and the first connecting block 552 pushes the second connecting block 74, and at the same time, the movable component 55 approaches the first clamping plate 431, pushing the first clamping plate 431 to translate, and when the first connecting shaft 434 slides to the end of the first slide groove 71 away from the second clamping plate 432, and the first slider 436 on the first clamping plate 431 slides to the end of the straight groove section of the second slide groove 72 away from the second clamping plate 432, the electric telescopic rod 54 continues to extend so that the movable tooth 63 is squeezed by the teeth of the gear column 433, the second spring 64 is compressed, and the movable tooth 63 slides on the limit rod 62, so that the movable block 5 The fixed teeth 553 on 51 mesh with the gear column 433, so that the first clamping plate 431 and the second clamping plate 432 rotate at the same time and the arc ends move away from each other. After the clamping assembly 43 is opened, the threaded rod 2 is controlled to rotate so that the support mechanism 4 reaches the desired position, and then the electric telescopic rod 54 is controlled to shorten, so that the first clamping plate 431 and the second clamping plate 432 rotate at the same time and the arc ends move closer to each other, so as to clamp the cable. The position of the first clamping plate 431 is automatically adjusted according to the diameter of the cable. When the sensor detects that the distance between the lower end of the first clamping plate 431 and the sensor is at a fixed value, the electric telescopic rod 54 stops working. When the monitoring target needs to be changed, the first clamping plate 431 and the second clamping plate 432 are opened again, and the position of the support mechanism 4 is adjusted.

[0031] The above shows and describes 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 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 the present invention is defined by the attached claims and their equivalents.

Claims

1. A DC leakage monitoring device, comprising a mounting frame (1) and a supporting mechanism (4), wherein the mounting frame (1) is rotatably connected to a threaded rod (2) at both ends, the bottom end of the threaded rod (2) is fixedly connected to a driving motor, guide rods (3) are respectively provided on both sides of the threaded rod (2), and both ends of the guide rod (3) are fixedly connected to the mounting frame (1), the supporting mechanism (4) comprises a movable seat (41) and a clamping assembly (43), the threaded rod (2) passes through the movable seat (41) and is threadedly connected to the movable seat (41), and the guide rod (3) passes through the movable seat (41) and is slidably connected to the movable seat (41), characterized in that: The clamping assembly (43) comprises a first clamping plate (431) and a second clamping plate (432); the first clamping plate (431) and the second clamping plate (432) are provided with leakage detectors on their opposite arc surfaces; one end of the first clamping plate (431) and the second clamping plate (432) close to the movable seat (41) are respectively fixedly connected to a gear column (433); a control mechanism (5) is provided on one side of the movable seat (41) close to the connecting frame (42); the control mechanism (5) comprises a movable assembly (55); the movable assembly ( 55) comprises a movable block (551) and a first connecting block (552) fixedly connected to the movable block (551), fixed teeth (553) are fixedly installed on both sides of the movable block (551), auxiliary mechanisms (6) are respectively arranged on both sides of the movable component (55), the auxiliary mechanism (6) comprises movable teeth (63) slidably connected to the movable component (55), an adjustment mechanism (7) is arranged between the control mechanism (5) and the clamping component (43), and the adjustment mechanism (7) cooperates with the first connecting block (552); A clamping assembly (43) which is configured to clamp the cable to be monitored under the action of the control mechanism (5) and the adjustment mechanism (7), thereby monitoring the cable; A control mechanism (5) configured to change the state of the clamping assembly (43) by controlling the movable assembly (55); An adjusting mechanism (7) is configured to cooperate with the control mechanism (5) to complete the movement of the clamping assembly (43); The auxiliary mechanism (6) is assembled to cooperate with the gear column (433) through the movable teeth (63), and the auxiliary gear column (433) is meshed with the fixed teeth (553), so that the gear column (433) starts to rotate under the drive of the movable component (55).

2. The DC leakage monitoring device according to claim 1, characterized in that: The support mechanism (4) further comprises a connecting frame (42) fixedly connected to a side of the movable seat (41) away from the mounting frame (1); the clamping assembly (43) is movably connected to the connecting frame (42); one end of the first clamping plate (431) and the second clamping plate (432) away from the gear column (433) are both arranged with an arc surface; the weight of the arc surface end of the clamping assembly (43) is the same as the weight of one end connected to the gear column (433); and the gear column (433) is arranged with non-full teeth.

3. The DC leakage monitoring device according to claim 2, characterized in that: The clamping assembly (43) further comprises a first sliding block (436) fixedly connected to both sides of the first clamping plate (431) and the second clamping plate (432); both ends of the gear column (433) fixedly connected to the first clamping plate (431) are fixedly connected to the first connecting shaft (434); and both ends of the gear column (433) fixedly connected to the second clamping plate (432) are fixedly connected to the second connecting shaft (435).

4. The DC leakage monitoring device according to claim 1, characterized in that: The adjustment mechanism (7) comprises a first slide groove (71), a second slide groove (72) and a third slide groove (73) which are formed on two opposite inner walls of the connecting frame (42); a second connecting block (74) is fixedly connected to a side of the lower end of the first clamping plate (431) close to the second clamping plate (432).

5. The DC leakage monitoring device according to claim 4, characterized in that: The first slide groove (71) is located on a side of the second slide groove (72) close to the movable seat (41), the third slide groove (73) is an arc-shaped groove, the second slide groove (72) is composed of a straight groove section and an arc-shaped groove section, and the straight groove sections of the first slide groove (71) and the second slide groove (72) are arranged in parallel and have the same length.

6. The DC leakage monitoring device according to claim 3, characterized in that: The first sliding block (436) cooperates with the second sliding groove (72) and the third sliding groove (73), the first connecting shaft (434) cooperates with the first sliding groove (71), the third sliding groove (73) takes the second connecting shaft (435) as the center of the circle, and the arc-shaped groove section of the second sliding groove (72) takes the end of the first sliding groove (71) away from the second clamping plate (432) as the center of the circle.

7. The DC leakage monitoring device according to claim 1, characterized in that: The control mechanism (5) further comprises a mounting groove (51) provided on a side of the movable seat (41) close to the connecting frame (42); a second sliding block (52) is slidably connected in the mounting groove (51); a first spring (53) is fixedly connected to the bottom of the mounting groove (51); an end of the first spring (53) away from the side wall of the mounting groove (51) is fixedly connected to the second sliding block (52); an electric telescopic rod (54) is fixedly mounted on a side of the second sliding block (52) away from the mounting groove (51); and an end of the electric telescopic rod (54) away from the second sliding block (52) is fixedly connected to the movable block (551).

8. The DC leakage monitoring device according to claim 7, characterized in that: A sensor is installed on one side of the lower end of the first connecting block (552) close to the first clamping plate (431), and the sensor is electrically connected to the electric telescopic rod (54). Both sides of the first connecting block (552) close to the first clamping plate (431) and the second clamping plate (432) are provided with inclined surfaces. The side of the second connecting block (74) close to the first connecting block (552) is provided with an inclined surface. The second connecting block (74) cooperates with the first connecting block (552), and both sides of one end of the movable block (551) away from the electric telescopic rod (54) are provided with inclined surfaces.

9. The DC leakage monitoring device according to claim 8, characterized in that: The auxiliary mechanism (6) further comprises fixed grooves (61) formed on both sides of the movable block (551), a group of limiting rods (62) being fixedly connected in the fixed grooves (61), the limiting rods (62) slidingly passing through the movable teeth (63), the movable teeth (63) being slidably connected to the fixed grooves (61), the movable teeth (63) being always located between two adjacent teeth of the gear column (433), a second spring (64) being sleeved on the outer wall of the limiting rods (62), one end of the second spring (64) being fixedly connected to the movable block (551), and the other end of the second spring (64) being fixedly connected to the movable teeth (63).

10. The DC leakage monitoring device according to claim 9, characterized in that: The first spring (53) is in a compressed state in a normal state, and the second spring (64) is in a stretched state in a normal state.

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