Cable pipe diameter monitoring equipment and cable pipe diameter monitoring method

Abstract

The invention is suitable for the technical field of cable detection, and discloses cable pipe diameter monitoring equipment and a cable pipe diameter monitoring method. The cable pipe diameter monitoring device comprises a support, a monitoring mechanism and a walking mechanism. The monitoring mechanism is connected to the support and comprises a monitoring device based on the friction nanometer generator, and the monitoring device is used for monitoring the change of the pipe diameter of the cable. The walking mechanism is connected to the support and used for moving in the extension direction of the cable so as to drive the support and the monitoring device to move in the extension direction of the cable. The cable pipe diameter monitoring equipment provided by the invention can be used for monitoring the pipe diameter change of the cable, and a worker can judge whether the cable is coated with ice or broken according to the pipe diameter change of the cable, so that the worker can further check and maintain the cable of which the pipe diameter is changed, and the safety and reliability of cable power transmission are ensured. Moreover, by adopting the monitoring device based on the friction nanometer generator, the self-energy supply of the monitoring device can be realized.

Description

Technical Field

[0001] The present invention relates to the field of cable detection technology, and in particular to a cable diameter monitoring device and a cable diameter monitoring method. Background Art

[0002] The steel core aluminum stranded wire (i.e. cable) of the transmission line is exposed to the air for a long time, and ice will inevitably appear after being exposed to wind and sun. Especially in winter, due to the temperature and humidity, the outside of the cable is easily frozen due to cold, which will bury hidden dangers for the normal operation of the transmission line and affect the safe operation of the transmission line. At the same time, excessive ice during the operation of the transmission line is prone to cause cable damage, such as broken strands, which will not only affect the safe operation of the power transmission line, but also threaten the reliability of power communication. Therefore, there is an urgent need for a cable diameter monitoring device to determine whether ice or broken strands have occurred. Summary of the invention

[0003] The present application provides a cable diameter monitoring device and a cable diameter monitoring method, which aims to determine whether the cable has abnormal conditions such as ice coating, broken strands, etc. by monitoring the changes in the cable diameter.

[0004] According to the first aspect of the present application, an embodiment provides a cable diameter monitoring device, including:

[0005] Bracket;

[0006] A monitoring mechanism connected to the bracket, the monitoring mechanism comprising a monitoring device based on a friction nanogenerator, the monitoring device being used to monitor changes in the diameter of the cable;

[0007] The walking mechanism is connected to the bracket and is used to move along the extension direction of the cable to drive the bracket and the monitoring device to move along the extension direction of the cable.

[0008] In one embodiment, the monitoring mechanism further includes an annular support frame, and the annular support frame is used to be sleeved on the periphery of the cable;

[0009] The monitoring device is slidably connected to the annular support frame, and is used to move along the radial direction of the annular support frame toward or away from the annular support frame.

[0010] In one embodiment, the monitoring device includes a plurality of displacement sensing units, and the displacement sensing units are displacement sensing elements based on friction nanogenerators;

[0011] The annular support frame comprises an annular support body and a plurality of connecting pieces, wherein the annular support body is used to be sleeved on the periphery of the cable, and the plurality of connecting pieces are connected to the inner side of the annular support body along the circumference of the annular support body;

[0012] The displacement sensing unit corresponds to the connecting member one by one and is slidably connected to the connecting member. The displacement sensing unit is used to move in a radial direction of the annular supporting body toward or away from the annular supporting body.

[0013] In one embodiment, a plurality of the connecting members are arranged at equal intervals along the circumference of the annular support body.

[0014] In one embodiment, the monitoring mechanism further includes a monitoring drive assembly, which is connected to the bracket and is used to drive the annular support frame to move along the extension direction of the cable to drive the monitoring device to move along the extension direction of the cable.

[0015] In one embodiment, the walking mechanism comprises a first walking assembly and a second walking assembly which are arranged at intervals, and the first walking assembly and the second walking assembly are both used to move along the extension direction of the cable;

[0016] The monitoring device is arranged between the first walking component and the second walking component.

[0017] In one embodiment, the first walking assembly includes a first walking support and a first walking wheel, the first walking wheel is rotatably connected to the first walking support and can walk along the cable;

[0018] The second walking assembly includes a second walking support and a second walking wheel, the second walking wheel is rotatably connected to the second walking support and can walk along the cable;

[0019] The first walking support member and the second walking support member are respectively arranged on opposite sides of a line connecting the first walking wheel and the second walking wheel.

[0020] In one embodiment, the cable diameter monitoring device further includes a clamping mechanism, which is connected to the bracket and is used to cooperate with the walking mechanism to clamp the cable.

[0021] In one embodiment, the clamping mechanism includes a first clamping assembly, the first clamping assembly includes a first clamping member and a first clamping driving member, the first clamping member and the first traveling assembly enclose a first limited space, the first limited space is used for the cable to pass through, and the first clamping driving member is used to drive the first clamping member to move so as to expand or reduce the first limited space; and / or,

[0022] The clamping mechanism includes a second clamping assembly, the second clamping assembly includes a second clamping piece and a second clamping drive piece, the second clamping piece and the second traveling assembly enclose a second defined space, the second defined space is used for the cable to pass through, and the second clamping drive piece is used to drive the second clamping piece to move so as to expand or reduce the second defined space.

[0023] According to a second aspect of the present application, an embodiment provides a method for monitoring the diameter of a cable, using the cable diameter monitoring device of the first aspect, including the following steps:

[0024] Controlling the walking mechanism to move to a preset position along the extension direction of the cable;

[0025] The control monitoring device monitors the diameter of the cable at a preset position to obtain a change signal of the cable diameter.

[0026] According to the cable diameter monitoring equipment and the cable diameter monitoring method of the above-mentioned embodiment, by setting up a monitoring mechanism, the change of the cable diameter can be monitored. When the cable diameter increases, it can be judged that ice may appear on the cable surface, and the greater the change, the thicker the ice layer. When the cable diameter decreases, it can be judged that the cable may be broken. This helps the staff to conduct further inspection and maintenance on this part of the cable to ensure the safety and reliability of the cable power transmission. And the monitoring mechanism is set to include a monitoring device based on a friction nanogenerator. The friction nanogenerator can collect the vibration energy of the cable and convert it into electrical energy to power the monitoring device, thereby realizing the self-power supply of the monitoring mechanism. The cable diameter monitoring equipment of the present application can be used to perform regular monitoring of cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technical personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 is a state diagram of a cable diameter monitoring device provided by an embodiment of the present invention installed on a cable;

[0029] Figure 2 is a schematic diagram of the assembly structure of the monitoring device and the annular support frame provided in an embodiment of the present invention;

[0030] Figure 3 This is the working principle diagram of the friction nanogenerator.

[0031] Description of Figure Numbers:

[0032] 100. Cable diameter monitoring equipment; 10. Bracket; 20. Monitoring mechanism; 21. Monitoring device; 211. Displacement sensing unit; 22. Annular support frame; 221. Annular support body; 222. Connector; 23. Monitoring drive assembly; 231. Ball screw; 30. Traveling mechanism; 31. First traveling assembly; 311. First traveling support member; 312. First traveling wheel; 32. Second traveling assembly; 321. Second traveling support member; 322. Second traveling wheel; 40. Clamping mechanism; 41. First clamping assembly; 411. First clamping member; 412. First clamping drive member; 42. Second clamping assembly; 421. Second clamping member; 422. Second clamping drive member; 200. Cable; 300. PTFE membrane; 400. Al electrode.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0037] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] Since the cables are exposed to the air for a long time, when the temperature is low or in cold areas, the cable exterior is easily frozen, which poses a hidden danger to the normal operation of the cables and affects the safe operation of the power transmission line. In addition, when the cables are covered with too much ice, it is easy to cause cable damage, such as broken strands, which not only affects the safe operation of the power transmission line, but also threatens the reliability of power communication.

[0039] In view of this, the present invention provides a cable diameter monitoring device and a cable diameter monitoring method, wherein the cable diameter monitoring method adopts the cable diameter monitoring device to monitor the cable diameter, and by checking the cable diameter, it is determined whether the cable is covered with ice or broken, so as to improve the safety and reliability of cable power transmission.

[0040] like Figure 1 As shown, the cable diameter monitoring device 100 provided in the embodiment of the present invention comprises a bracket 10, a monitoring mechanism 20 and a walking mechanism 30. The monitoring mechanism 20 and the walking mechanism 30 are both connected to the bracket 10, and the walking mechanism 30 is used to move along the extension direction of the cable 200 to drive the bracket 10 and the monitoring device 21 to move along the extension direction of the cable 200, and the monitoring mechanism 20 is used to monitor the change of the diameter of the cable 200.

[0041] By adopting the above technical solution, by setting the bracket 10, it can be used to support the monitoring mechanism 20 and the walking mechanism 30. By setting the monitoring mechanism 20, the change of the diameter of the cable 200 can be monitored. When the diameter of the cable 200 increases, it can be judged that the surface of the cable 200 may be covered with ice, and the greater the change, the thicker the ice layer covered. When the diameter of the cable 200 decreases, it can be judged that the cable 200 may be broken. In this way, it is helpful for the staff to further inspect and maintain the part of the cable 200 to ensure the safety and reliability of the power transmission of the cable 200. By setting the walking mechanism 30, the walking mechanism 30 moves along the extension direction of the cable 200, driving the bracket 10 and the monitoring mechanism 20 to move along the extension direction of the cable 200, so that the monitoring mechanism 20 can reach the monitored part of the cable 200, so that the monitoring mechanism 20 can monitor the diameter of the monitored part of the cable 200. Therefore, the cable diameter monitoring device 100 of the present application can be used to regularly monitor the diameter of the cable 200 to improve the safety and reliability of power transmission of the cable 200 and provide early warning for abnormalities of the cable 200.

[0042] In specific implementation, the monitoring mechanism 20 can monitor the diameter of the cable 200 when the walking mechanism 30 moves along the extension direction of the cable 200, or it can monitor the diameter of the cable 200 when the walking mechanism 30 stops moving along the cable 200, that is, the walking mechanism 30 is in a stationary state.

[0043] In one embodiment, the monitoring mechanism 20 includes a monitoring device 21 based on a triboelectric nanogenerator (TENG), and the monitoring device 21 is used to monitor the change in the diameter of the cable 200. TENG is an innovative energy harvesting technology that generates electric charge through contact and separation between materials and converts mechanical energy into electrical energy. By setting the monitoring mechanism 20 to include a monitoring device 21 based on TENG, the monitoring device 21 can collect the vibration energy of the cable 200 through TENG and convert it into electrical energy, thereby powering the monitoring device 21 and realizing self-powering of the monitoring device 21.

[0044] See also Figure 1 The monitoring mechanism 20 further includes an annular support frame 22, which is used to be sleeved on the periphery of the cable 200. The monitoring device 21 is slidably connected to the annular support frame 22, and is used to move in a radial direction of the annular support frame 22 toward or away from the annular support frame 22.

[0045] The annular support frame 22 is sleeved on the periphery of the cable 200, and the radial direction of the annular support frame 22 is the radial direction of the cable 200. The monitoring device 21 is arranged to move in the direction close to or away from the annular support frame 22 along the radial direction of the annular support frame 22, that is, the monitoring device 21 moves in the direction close to or away from the cable 200 along the radial direction of the cable 200. TENG has working modes such as vertical contact-separation mode, horizontal sliding mode, single electrode mode and independent layer mode. By setting the monitoring device 21 to move in the direction close to or away from the cable 200 along the radial direction of the cable 200, TENG can work in the vertical contact-separation mode. It can be understood that in other embodiments, TENG can also work in other working modes, and accordingly, other connection structures and connection methods can be used to connect the monitoring device 21.

[0046] See also Figure 1 and Figure 2 The monitoring device 21 includes a plurality of displacement sensing units 211, which are displacement sensing elements based on friction nanogenerators. The annular support frame 22 includes an annular support body 221 and a plurality of connecting pieces 222, wherein the annular support body 221 is used to be sleeved on the periphery of the cable 200, and the plurality of connecting pieces 222 are connected to the inner side of the annular support body 221 along the circumference of the annular support body 221. The displacement sensing units 211 correspond to the connecting pieces 222 one by one, and are slidably connected to the connecting pieces 222, and the displacement sensing units 211 are used to move in the radial direction of the annular support body 221 toward or away from the annular support body 221.

[0047] Because the ice thickness at various circumferential parts of the cable 200 may be different, an annular support body 221 is provided to be sleeved on the periphery of the cable 200, and multiple connecting members 222 are connected to the inner side of the annular support body 221 along the circumference of the annular support body 221. The displacement sensing units 211 correspond to the connecting members 222 one by one and are connected to the connecting members 222, so that the multiple displacement sensing units 211 can be arranged around the circumference of the cable 200, which is beneficial for the monitoring device 21 to monitor various circumferential parts of the cable 200.

[0048] By arranging the displacement sensing unit 211 to be slidably connected to the connecting member 222 , the monitoring device 21 can be moved along the radial direction of the cable 200 toward a direction approaching or away from the cable 200 .

[0049] By setting the displacement sensing unit 211 as a displacement sensing element based on a friction nanogenerator, on the one hand, the displacement sensing unit 211 can be self-powered, and on the other hand, the displacement sensing unit 211 can accurately monitor the change in the diameter of the cable 200 .

[0050] TENG can be approximately considered as a capacitor. Figure 3As shown, when the PTFE film 300 slides relative to the Al electrode 400 with a displacement of Lx, the left electrode of the capacitor has a positive charge of Q / 2 and Q(L / 2-L X ) / L negative charge, while the right electrode of the capacitor has a positive charge of Q / 2 and Q(L / 2+L X ) / L. Therefore, the left and right electrodes of the capacitor have QL X / L has the same value of positive and negative charges. Therefore, the output voltage of the capacitor can be described as follows:

[0051]

[0052] Among them, V OC represents the output voltage, Q represents the charge, Lx represents the displacement length, L represents the total length, C O Represents capacitance.

[0053] According to the above output voltage formula, it can be seen that the output voltage of TENG is proportional to the displacement change. When the displacement sensing unit 211 is affected by the ice covering of the cable 200 (increase in the pipe diameter), it will move along the connecting plate away from the cable 200. When the displacement sensing unit 211 is affected by the broken strands of the cable 200 (reduction in the pipe diameter), it will move along the connecting plate towards the cable 200. The displacement increases, and the voltage output of TENG will also increase accordingly, thereby realizing the generation of electric energy and the monitoring of the pipe diameter.

[0054] When in use, multiple displacement sensing units 211 can be attached to the surface of the cable 200 and slide along the extension direction of the cable 200. During the sliding process, when the diameter of the cable 200 changes, the displacement sensing unit 211 can move along the radial direction of the cable 200 toward or away from the cable 200, thereby being able to monitor the abnormal diameter of the part.

[0055] In one embodiment, the connecting member 222 is provided with a slide groove (not shown), the displacement sensing unit 211 is provided with a slider (not shown), and the displacement sensing unit 211 is slidably connected to the connecting member 222 through the sliding cooperation of the slider and the slide groove.

[0056] In one embodiment, a plurality of connectors 222 are arranged at equal intervals along the circumference of the annular support body 221. In a specific implementation, the annular support body 221 is a circular annular structure, that is, the cross section of the annular support body 221 is circular, and when the annular support body 221 is sleeved on the periphery of the cable 200, it is coaxial with the cable 200. Arranging a plurality of connectors 222 at equal intervals along the circumference of the annular support body 221, the plurality of connectors 222 are arranged at equal intervals along the circumference of the cable 200, and the displacement sensing unit 211 is connected to the connector 222. Therefore, the plurality of displacement sensing units 211 are arranged at equal intervals along the circumference of the cable 200, that is, they are evenly arranged around the cable 200, so that the monitoring device 21 can improve the monitoring of various circumferential parts of the cable 200. Of course, in other embodiments, it is also possible to arrange a plurality of connectors 222 at non-equal intervals along the circumference of the annular support body 221. In addition, the annular support body 221 may also be an annular structure of other shapes, for example, the cross section of the annular support body 221 is a triangle, a rectangle, or a regular polygon, etc.

[0057] See also Figure 2 In this embodiment, there are six displacement sensing units 211 and six connecting members 222. It is understood that in other embodiments, the number of displacement sensing units 211 and connecting members 222 is not limited thereto, and may be two, three, four, five, seven, eight, etc. It should be noted that, regardless of the number of displacement sensing units 211 and connecting members 222, a gap is provided between two adjacent displacement sensing units 211 to avoid interference between them.

[0058] See also Figure 1 The monitoring mechanism 20 also includes a monitoring drive assembly 23, which is connected to the bracket 10 and is used to drive the annular support frame 22 to move along the extension direction of the cable 200, so as to drive the monitoring device 21 to move along the extension direction of the cable 200.

[0059] In specific implementation, when the cable diameter monitoring device 100 moves to the monitored portion of the cable 200, the monitoring drive assembly 23 can drive the annular support frame 22 and the monitoring device 21 to move along the extension direction of the cable 200 within a preset interval, so as to monitor the cable 200 within the interval. If it is found that the diameter of the cable 200 within the interval changes, the abnormal area of ​​the cable 200 can be quickly determined, which is convenient for the staff to perform maintenance and processing. Specifically, the walking mechanism 30 moves along the extension direction of the cable 200, driving the monitoring device 21 to move along the extension direction of the cable 200, so that the monitoring device 21 runs to the monitored portion of the cable 200. At this time, the walking mechanism 30 stops moving, and the monitoring drive assembly 23 drives the monitoring device 21 to move along the extension direction of the cable 200 within the preset interval to monitor the diameter of the cable 200.

[0060] It is understandable that in other embodiments, the monitoring mechanism 20 may not be provided with the monitoring drive assembly 23. When this technical solution is adopted, when the walking mechanism 30 moves along the extension direction of the cable 200 and drives the monitoring device 21 to move along the extension direction of the cable 200, the monitoring device 21 simultaneously monitors the diameter of the cable 200.

[0061] In one embodiment, the monitoring drive assembly 23 includes a motor (not shown) and a ball screw 231, the ball screw 231 is connected between the motor and the annular support body 221, and the motor drives the ball screw 231 to move, so as to drive the annular support body 221 to move linearly along the ball screw 231. The ball screw 231 is arranged parallel to the cable 200. Of course, in other embodiments, other types of screws can also be used to connect between the motor and the annular support body 221.

[0062] See also Figure 1 The walking mechanism 30 includes a first walking component 31 and a second walking component 32 arranged at intervals. The first walking component 31 and the second walking component 32 are both used to move along the extension direction of the cable 200, and the monitoring device 21 is arranged between the first walking component 31 and the second walking component 32. In specific implementation, the first walking component 31 and the second walking component 32 are respectively arranged at the two ends of the bracket 10, and the monitoring device 21 is arranged between the first walking component 31 and the second walking component 32, which is conducive to maintaining the balance of the cable diameter monitoring device 100 when the walking mechanism 30 moves along the extension direction of the cable 200. Among them, the preset interval in which the monitoring drive component 23 drives the annular support frame 22 and the monitoring device 21 to move along the extension direction of the cable 200 is the part of the cable 200 located between the first walking component 31 and the second walking component 32. In this way, when it is found that the diameter of the cable 200 is abnormal, the staff can quickly determine the abnormal part.

[0063] See also Figure 1 The first walking assembly 31 includes a first walking support 311 and a first walking wheel 312. The first walking wheel 312 is rotatably connected to the first walking support 311 and can walk along the cable 200. The second walking assembly 32 includes a second walking support 321 and a second walking wheel 322. The second walking wheel 322 is rotatably connected to the second walking support 321 and can walk along the cable 200. The first walking support 311 and the second walking support 321 are respectively arranged on opposite sides of the line connecting the first walking wheel 312 and the second walking wheel 322.

[0064] In this embodiment, one first travel support 311 and one second travel support 321 are provided, and are respectively provided on opposite sides of the line connecting the first travel wheel 312 and the second travel wheel 322. In this way, on the one hand, the weight of the cable diameter monitoring device 100 can be reduced, and on the other hand, the cable diameter monitoring device 100 is not easy to tilt to the side during the operation along the cable 200, and can maintain balance.

[0065] It can be understood that in other embodiments, two first walking supports 311 and two second walking supports 321 can also be provided. When this technical solution is adopted, the two first walking supports 311 are respectively rotatably connected to the two ends of the first walking wheel 312, and the two second walking supports 321 are respectively rotatably connected to the two ends of the second walking wheel 322.

[0066] In this embodiment, the first travel wheel 312 and the second travel wheel 322 can travel along the cable 200 when the staff applies external force. In another embodiment, the first travel assembly 31 further includes a first driving member (not shown), which is used to drive the first travel wheel 312 to rotate so that the first travel wheel 312 travels along the cable 200. The second travel assembly 32 further includes a second driving member (not shown), which is used to drive the second travel wheel 322 to rotate so that the second travel wheel 322 travels along the cable 200. The first driving member and the second driving member can be the same driving member or different driving members.

[0067] See also Figure 1 The cable diameter monitoring device 100 further includes a clamping mechanism 40, which is connected to the bracket 10 and is used to cooperate with the traveling mechanism 30 to clamp the cable 200. This arrangement can improve the stability of the cable diameter monitoring device 100 installed on the cable 200, and when the monitoring device 21 monitors the diameter of the cable 200, the clamping mechanism 40 cooperates with the traveling mechanism 30 to clamp the cable 200, which can improve the accuracy of the diameter monitoring. Of course, as an alternative embodiment, it is also possible that the cable diameter monitoring device 100 is not provided with the clamping mechanism 40.

[0068] In specific implementation, when the traveling mechanism 30 moves to the part to be monitored, the clamping mechanism 40 can be driven to cooperate with the traveling mechanism 30 to clamp the cable 200, and then the monitoring device 21 can be driven to monitor the diameter of the cable 200. Alternatively, when the cable diameter monitoring device 100 does not monitor the diameter of the cable 200, the clamping mechanism 40 is matched with the traveling mechanism 30 to clamp the cable 200 to ensure the firmness of the cable diameter monitoring device 100 installed on the cable 200.

[0069] See also Figure 1The clamping mechanism 40 includes a first clamping assembly 41, and the first clamping assembly 41 includes a first clamping member 411 and a first clamping driving member 412. The first clamping member 411 and the first walking assembly 31 enclose a first defined space (not shown). The first defined space is used for the cable 200 to pass through. The first clamping driving member 412 is used to drive the first clamping member 411 to move so as to expand or reduce the first defined space.

[0070] In specific implementation, the first clamping member 411 and the first running wheel 312 are arranged relative to each other, the first clamping member 411 is arranged below the cable 200, the first running wheel 312 is located above the cable 200, and the first clamping member 411 and the first running wheel 312 enclose a first limited space. When the cable 200 needs to be clamped, the first clamping driving member 412 drives the first clamping member 411 to move upward, shrinking the first limited space, thereby clamping the cable 200; when the cable 200 does not need to be clamped, the first clamping driving member 412 drives the first clamping member 411 to move downward, expanding the first limited space, thereby releasing the cable 200.

[0071] See also Figure 1 The clamping mechanism 40 also includes a second clamping assembly 42, which includes a second clamping member 421 and a second clamping driving member 422. The second clamping member 421 and the second walking assembly 32 are combined to form a second defined space (not shown). The second defined space is used for the cable 200 to pass through. The second clamping driving member 422 is used to drive the second clamping member 421 to move so as to expand or reduce the second defined space.

[0072] In specific implementation, the second clamping member 421 and the second running wheel 322 are arranged opposite to each other, the second clamping member 421 is arranged below the cable 200, the second running wheel 322 is located above the cable 200, and the second clamping member 421 and the second running wheel 322 enclose a second limited space. When the cable 200 needs to be clamped, the second clamping driving member 422 drives the second clamping member 421 to move upward, shrinking the second limited space, thereby clamping the cable 200; when the cable 200 does not need to be clamped, the second clamping driving member 422 drives the second clamping member 421 to move downward, expanding the second limited space, thereby releasing the cable 200.

[0073] In this embodiment, the clamping mechanism 40 is provided with two clamping components, namely, a first clamping component 41 and a second clamping component 42. In this way, the firmness of the cable diameter monitoring device 100 installed on the cable 200 can be improved. It can be understood that in other embodiments, the clamping mechanism 40 can also be provided with one clamping component.

[0074] In addition, the first clamping driving member 412 and the second clamping driving member 422 can be different driving components or the same driving component.

[0075] In one embodiment, the first clamping drive member 412 and the second clamping drive member 422 are both cylinders. Of course, in specific applications, the first clamping drive member 412 and the second clamping drive member 422 can also be other drive components, such as hydraulic cylinders.

[0076] The embodiment of the present invention further provides a method for monitoring the diameter of a cable, which uses the above-mentioned cable diameter monitoring device 100 for monitoring, and includes the following steps:

[0077] Controlling the walking mechanism to move to a preset position along the extension direction of the cable;

[0078] The control monitoring device monitors the diameter of the cable at a preset position to obtain a change signal of the cable diameter.

[0079] The above monitoring method can be used to monitor the diameter of the cable 200, so that the staff can find abnormalities of the cable 200, which is beneficial to improving the safety and reliability of power transmission of the cable 200.

[0080] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cable diameter monitoring device, characterized in that: include: Bracket; A monitoring mechanism connected to the bracket, the monitoring mechanism comprising a monitoring device based on a friction nanogenerator, the monitoring device being used to monitor changes in the diameter of the cable; The walking mechanism is connected to the bracket and is used to move along the extension direction of the cable to drive the bracket and the monitoring device to move along the extension direction of the cable.

2. The cable diameter monitoring device according to claim 1, characterized in that: The monitoring mechanism further comprises an annular support frame, and the annular support frame is used to be sleeved on the periphery of the cable; The monitoring device is slidably connected to the annular support frame, and is used to move along the radial direction of the annular support frame toward or away from the annular support frame.

3. The cable diameter monitoring device according to claim 2, characterized in that: The monitoring device comprises a plurality of displacement sensing units, wherein the displacement sensing units are displacement sensing elements based on friction nanogenerators; The annular support frame comprises an annular support body and a plurality of connecting pieces, wherein the annular support body is used to be sleeved on the periphery of the cable, and the plurality of connecting pieces are connected to the inner side of the annular support body along the circumference of the annular support body; The displacement sensing unit corresponds to the connecting member one by one and is slidably connected to the connecting member. The displacement sensing unit is used to move in a radial direction of the annular supporting body toward or away from the annular supporting body.

4. The cable diameter monitoring device according to claim 3, characterized in that: The plurality of connecting members are arranged at equal intervals along the circumference of the annular support body.

5. The cable diameter monitoring device according to claim 2, characterized in that: The monitoring mechanism further includes a monitoring drive assembly, which is connected to the bracket and is used to drive the annular support frame to move along the extension direction of the cable, so as to drive the monitoring device to move along the extension direction of the cable.

6. The cable diameter monitoring device according to claim 1, characterized in that: The walking mechanism comprises a first walking assembly and a second walking assembly arranged at intervals, wherein the first walking assembly and the second walking assembly are both used to move along the extension direction of the cable; The monitoring device is arranged between the first walking component and the second walking component.

7. The cable diameter monitoring device according to claim 6, characterized in that: The first walking assembly includes a first walking support and a first walking wheel, wherein the first walking wheel is rotatably connected to the first walking support and can walk along the cable; The second walking assembly includes a second walking support and a second walking wheel, the second walking wheel is rotatably connected to the second walking support and can walk along the cable; The first walking support member and the second walking support member are respectively arranged on opposite sides of a line connecting the first walking wheel and the second walking wheel.

8. The cable diameter monitoring device according to claim 6, characterized in that: It also includes a clamping mechanism, which is connected to the bracket and is used to cooperate with the walking mechanism to clamp the cable.

9. The cable diameter monitoring device according to claim 8, characterized in that: The clamping mechanism includes a first clamping assembly, the first clamping assembly includes a first clamping member and a first clamping driving member, the first clamping member and the first traveling assembly enclose a first limited space, the first limited space is used for the cable to pass through, and the first clamping driving member is used to drive the first clamping member to move, so as to expand or reduce the first limited space; and / or, The clamping mechanism includes a second clamping assembly, the second clamping assembly includes a second clamping piece and a second clamping drive piece, the second clamping piece and the second traveling assembly enclose a second defined space, the second defined space is used for the cable to pass through, and the second clamping drive piece is used to drive the second clamping piece to move so as to expand or reduce the second defined space.

10. A method for monitoring cable diameter, characterized in that: The cable diameter monitoring device according to any one of claims 1 to 9 comprises the following steps: Controlling the walking mechanism to move to a preset position along the extension direction of the cable; The control monitoring device monitors the diameter of the cable at a preset position to obtain a change signal of the cable diameter.

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