Cable loop flow detection device

Abstract

The application relates to a cable loop current detection device which comprises a telescopic rod, a sliding piece, a first clamping piece, a second clamping piece and a detection assembly. The sliding piece is connected with the telescopic rod and can move along the telescopic rod; the first clamping piece is connected with one end of the telescopic rod; the second clamping piece is connected with the sliding piece and moves with the sliding piece to approach or move away from the first clamping piece, and the second clamping piece can abut against the first clamping piece; one end of the detection assembly is connected with the first clamping piece, the other end is connected with the second clamping piece and moves with the second clamping piece, and when the first clamping piece abuts against the second clamping piece, the detection assembly forms a loop structure. An operator holds one end of the telescopic rod away from the first clamping piece, adjusts the length of the telescopic rod, and makes the first clamping piece, the second clamping piece and the detection assembly correspond to a high cable to detect the high cable. The operator does not need to climb to the cable, and the operation is time-saving and labor-saving, and the danger is relatively low.

Description

Technical Field

[0001] This application relates to the field of cable testing technology, and in particular to a cable circulating current testing device. Background Technology

[0002] With urban construction and industrial development, cables are widely used for transmitting electrical energy. To ensure the safe operation of the power system, prevent cable faults, improve operation and maintenance efficiency, and extend the service life of cables, it is necessary to perform circulating current testing on the cables at regular intervals to obtain their usage status and thus carry out timely maintenance.

[0003] In related technologies, Rogowski coils are typically used to perform circulating current testing on cables. During testing, the Rogowski coil is wound around the outer circumference of the cable under test, and the alternating current of the cable is detected through the principle of induced current to obtain the current parameters of the cable, thereby determining the service status of the cable.

[0004] However, the aforementioned method of winding a coil around the cable requires manual operation. Since cables are typically located at a high position, this method necessitates operators climbing to the cable's location to wind the coil, and they must also be near the coil to collect data during the testing process. This climbing requirement makes the testing operation cumbersome, time-consuming, labor-intensive, and inherently dangerous. Utility Model Content

[0005] Therefore, it is necessary to provide a cable circulating current testing device that addresses the problems of climbing required for the aforementioned testing, which is time-consuming and labor-intensive. This device can perform circulating current testing on cables without the need for climbing.

[0006] A cable circulating current detection device, comprising:

[0007] Telescopic pole;

[0008] A sliding element is connected to the telescopic rod and is capable of moving along the telescopic rod;

[0009] The first clamping element is connected to one end of the telescopic rod;

[0010] The second clamping member is connected to the sliding member and moves with the sliding member to approach or move away from the first clamping member. The second clamping member can abut against the first clamping member.

[0011] The detection component is connected at one end to the first clamping member and at the other end to the second clamping member, and moves with the second clamping member. When the first clamping member and the second clamping member come into contact, the detection component forms a ring structure.

[0012] In some embodiments, the slider includes a sleeve that is fitted around the outer periphery of the telescopic rod and is movable along the length of the telescopic rod.

[0013] In some embodiments, the surface of the telescopic rod is provided with a first limiting structure, and the surface of the sleeve is provided with a second limiting structure corresponding to the first limiting structure. The first limiting structure and the second limiting structure cooperate to restrict the movement of the sleeve relative to the telescopic rod.

[0014] In some embodiments, the first limiting structure includes a pin, one end of which is connected to the surface of the telescopic rod, and the other end of which extends away from the telescopic rod.

[0015] The second limiting structure includes a first limiting groove and a second limiting groove that are connected to each other. The length direction of the first limiting groove is the same as the movement direction of the sleeve, and the length of the second limiting groove is perpendicular to the length direction of the first limiting groove. The sleeve can rotate relative to the telescopic rod so that the pin can switch between being engaged in the first limiting groove and being engaged in the second limiting groove. When the pin is engaged in the first limiting groove, the sleeve can move along the telescopic rod. When the pin is engaged in the second limiting groove, the movement of the sleeve along the telescopic rod is restricted.

[0016] In some embodiments, the telescopic rod includes a connecting portion and a gripping portion, the gripping portion being located at one end of the telescopic rod away from the first clamping member, one end of the connecting portion being connected to one end of the gripping portion; the sliding member being slidably connected to the connecting portion, and the first clamping member being connected to the other end of the connecting portion.

[0017] In some embodiments, the surface of the grip portion is knurled.

[0018] In some embodiments, the first clamping member includes a bent rod, one end of which is connected to the end of the telescopic rod, and the end of the detection component is connected to the other end of the bent rod; the second clamping member abuts against the other end of the bent rod, and when the second clamping member abuts against the bent rod, the bent rod and the second clamping member enclose to form a ring structure, thereby forming a ring structure for the detection component.

[0019] In some embodiments, the second clamping member includes a clamping portion and an abutting portion, one end of the clamping portion is connected to the sliding member, the abutting portion is connected to the other end of the clamping portion, and the abutting portion abuts against the end of the bending rod; the end of the detection component is connected to the abutting portion.

[0020] In some embodiments, the abutment portion is made of an elastic material.

[0021] In some embodiments, the detection component includes a flexible coil, one end of which is connected to the first clamping member and the other end of which is connected to the second clamping member.

[0022] In the aforementioned cable circulating current detection device, the first clamping member is located at the far end of the telescopic rod. By adjusting the sliding member on the telescopic rod, the second clamping member can be moved closer to or further away from the first clamping member. When the second clamping member moves away from the first clamping member, an opening is formed between the two clamping members, allowing the cable to move through this opening between them. Once the cable is between the two clamping members, the sliding member can be adjusted to bring the second clamping member into contact with the first clamping member. One end of the detection component moves with the second clamping member, allowing the detection component to wrap around the outer circumference of the cable, thus enabling cable detection. The operator holds the end of the telescopic rod furthest from the first clamping member and adjusts the length of the telescopic rod to align the first clamping member, the second clamping member, and the detection component with the cable at a higher position for detection. The operator can perform cable detection without climbing to the vicinity of the cable, saving time and effort, and reducing the risk of injury. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a cable circulating current detection device and a cable according to an embodiment of this application. The diagram shows the state when the cable is being detected.

[0024] Figure 2 This is a schematic diagram of the structure of the distal end of the telescopic rod in an embodiment of the cable circulation current detection device of this application.

[0025] Figure 3 This is a schematic diagram of the structure of the near end of the telescopic rod in a cable circulation current detection device according to an embodiment of this application.

[0026] In the figure, 10 is a cable; 100 is a telescopic rod; 101 is a first limiting structure; 1011 is a pin; 110 is a connecting part; 120 is a gripping part; 200 is a sliding part; 210 is a sleeve; 211 is a second limiting structure; 2111 is a first limiting groove; 2112 is a second limiting groove; 300 is a first clamping part; 310 is a bending rod; 400 is a second clamping part; 410 is a clamping part; 420 is an abutment part; 500 is a detection component; and 510 is a flexible coil. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] See Figure 1 and Figure 2 , Figure 1 This diagram shows the overall structure of the cable circulating current detection device in one embodiment of the present application when detecting a cable. Figure 2 A schematic diagram of the distal end of the telescopic rod of a cable circulation current detection device according to an embodiment of this application is shown. An embodiment of this application provides a cable circulation current detection device, which includes a telescopic rod 100, a sliding member 200, a first clamping member 300, a second clamping member 400, and a detection component 500. The sliding member 200 is connected to the telescopic rod 100 and is movable along the telescopic rod 100. The first clamping member 300 is connected to one end of the telescopic rod 100. The second clamping member 400 is connected to the sliding member 200 and moves with the sliding member 200 to approach or move away from the first clamping member 300; the second clamping member 400 can abut against the first clamping member 300. One end of the detection component 500 is connected to the first clamping member 300, and the other end is connected to the second clamping member 400, and moves with the second clamping member 400. When the first clamping member 300 abuts against the second clamping member 400, the detection component 500 forms a ring-shaped structure.

[0034] like Figure 1 and Figure 2As shown, in this embodiment, the telescopic rod 100 is a straight rod and can extend and retract along its length. The sliding member 200 is slidably connected to the telescopic rod 100, allowing the sliding member 200 to slide along the length of the telescopic rod 100. The first clamping member 300 is connected to one end of the telescopic rod 100, and the second clamping member 400 follows the sliding member 200 along the length of the telescopic rod 100 (i.e., along its length). Figure 1 and Figure 2 The second clamping member 400 (as shown in the vertical direction) moves, thereby moving closer to or further away from the first clamping member 300. When the second clamping member 400 moves away from the first clamping member 300, an opening is formed between the first clamping member 300 and the second clamping member 400. When the second clamping member 400 moves closer to the first clamping member 300 until it abuts against the first clamping member 300, the opening between the first clamping member 300 and the second clamping member 400 closes. One end of the detection component 500 can move closer to or further away from its other end under the action of the second clamping member 400. When the second clamping member 400 abuts against the first clamping member 300, the end of the detection component 500 connected to the second clamping member 400 and the end connected to the first clamping member 300 approach each other to form a ring structure.

[0035] For ease of description, the end of the telescopic rod 100 furthest from the first clamping member 300 is referred to as the proximal end of the telescopic rod 100, and the end of the telescopic rod 100 connected to the first clamping member 300 is referred to as the distal end of the telescopic rod 100. In use, the operator holds the proximal end of the telescopic rod 100 and adjusts its length so that the distal end of the telescopic rod 100 corresponds to the cable 10 located at a higher position. Then, the sliding member 200 is adjusted to move the second clamping member 400 away from the first clamping member 300, thus widening the opening between the first clamping member 300 and the second clamping member 400. Simultaneously, the end of the detection component 500 connected to the second clamping member 400 moves away from the end of the detection component 500 connected to the first clamping member 300. Adjust the opening between the first clamping member 300 and the second clamping member 400 to a suitable size. The operator then adjusts the position of the telescopic rod 100, allowing the cable 10 to pass through the opening between the first clamping member 300 and the second clamping member 400. This allows the first clamping member 300 and the second clamping member 400 to move to opposite sides of the cable 10. As the cable 10 passes through the opening between the first clamping member 300 and the second clamping member 400, it simultaneously passes through the openings formed at both ends of the detection component 500, allowing the detection component 500 to wrap around the outer periphery of the cable 10. Subsequently, adjusting the sliding member 200 causes the second clamping member 400 to abut against the first clamping member 300, enabling the detection component 500 to form a ring structure surrounding the outer periphery of the cable 10, thereby detecting the relevant parameters of the circulating current in the cable 10.

[0036] With the above configuration, the length of the telescopic rod 100 can be adjusted to correspond to the higher position of the cable 10. Adjusting the sliding member 200 allows the detection component 500 to wrap around the outer circumference of the cable 10, thereby enabling the detection of the cable 10. This eliminates the need for operators to climb to a higher position to detect the cable 10, simplifying operation, saving time and effort during maintenance, and ensuring high safety. Furthermore, the first clamping member 300 and the second clamping member 400, located at the distal end of the telescopic rod 100, respectively clamp the cable 10 on both sides to prevent the distal end of the telescopic rod 100 from deviating from the cable 10, thus improving the overall stability of the detection device during testing.

[0037] like Figure 1 and Figure 3 As shown, in some embodiments, the slider 200 includes a sleeve 210, which is sleeved on the outer periphery of the telescopic rod 100 and is movable along the length of the telescopic rod 100.

[0038] The sleeve 210 is a hollow tubular structure, and it is fitted around the outer periphery of the telescopic rod 100, allowing the sleeve 210 to move relative to the telescopic rod 100. This design prevents the sleeve 210 from deviating from the telescopic rod 100 during movement, thus improving the stability of the sleeve 210's sliding motion.

[0039] like Figure 1 and Figure 3 As shown, in some embodiments, the surface of the telescopic rod 100 is provided with a first limiting structure 101, and the surface of the sleeve 210 is provided with a second limiting structure 211 corresponding to the first limiting structure 101. The first limiting structure 101 and the second limiting structure 211 cooperate to restrict the movement of the sleeve 210 relative to the telescopic rod 100.

[0040] The first limiting structure 101 is provided on the surface where the telescopic rod 100 contacts the sleeve 210, and the second limiting structure 211 is provided on the surface where the sleeve 210 contacts the telescopic rod 100, so that the first limiting structure 101 can cooperate with the second limiting structure 211. When the sleeve 210 is adjusted to a suitable position (i.e., when the second clamping member 400 abuts against the first clamping member 300), the cooperation of the first limiting structure 101 and the second limiting structure 211 prevents the sleeve 210 from sliding relative to the telescopic rod 100, thereby preventing the second clamping member 400 from moving away from the first clamping member 300 due to gravity or misoperation, thus preventing the cable 10 from separating from the first clamping member 300 and the second clamping member 400. This ensures the contact stability between the second clamping member 400 and the first clamping member 300, and guarantees a stable and reliable testing process. It should be noted that the first limiting structure 101 and the second limiting structure 211 can both be snap-fit ​​structures or bolt hole structures. It is only necessary to ensure that when the first limiting structure 101 and the second limiting structure 211 cooperate, they can restrict the sleeve 210 from sliding relative to the telescopic rod 100.

[0041] like Figure 1 and Figure 3 As shown, in some embodiments, the first limiting structure 101 includes a pin 1011, one end of which is connected to the surface of the telescopic rod 100, and the other end of which extends away from the telescopic rod 100. The second limiting structure 211 includes a first limiting groove 2111 and a second limiting groove 2112 that are connected to each other. The length direction of the first limiting groove 2111 is the same as the movement direction of the sleeve 210, and the length of the second limiting groove 2112 is perpendicular to the length direction of the first limiting groove 2111. The sleeve 210 can rotate relative to the telescopic rod 100 so that the pin 1011 can switch between being engaged in the first limiting groove 2111 and being engaged in the second limiting groove 2112. When the pin 1011 is engaged in the first limiting groove 2111, the sleeve 210 can move along the telescopic rod 100. When the pin 1011 is engaged in the second limiting groove 2112, the movement of the sleeve 210 along the telescopic rod 100 is restricted.

[0042] A pin 1011 is provided on the surface of the telescopic rod 100. A first limiting groove 2111 and a second limiting groove 2112 are formed on the inner sidewall of the sleeve 210, so that the pin 1011 can be engaged in the first limiting groove 2111 and the second limiting groove 2112. In some preferred embodiments, the first limiting groove 2111 and the second limiting groove 2112 both penetrate the sidewall of the sleeve 210. When the pin 1011 is engaged in the first limiting groove 2111 and the second limiting groove 2112, the pin 1011 can be exposed in the first limiting groove 2111 and the second limiting groove 2112, so that the operator can observe the engagement position of the pin 1011.

[0043] Since the length direction of the first limiting groove 2111 is the same as the moving direction of the sleeve 210, when the pin 1011 is engaged in the first limiting groove 2111, the pin 1011 can move along the length direction of the first limiting groove 2111. That is, at this time, the pin 1011 does not obstruct the sleeve 210 from sliding relative to the telescopic rod 100. The first limiting groove 2111 and the second limiting groove 2112 are perpendicular to each other and connected. When the sleeve 210 moves to the position where the second clamping member 400 abuts against the first clamping member 300, the pin 1011 is located at the connection position of the first limiting groove 2111 and the second limiting groove 2112. At this time, by rotating the sleeve 210, the pin 1011 can be moved into the second limiting groove 2112 and abut against the inner wall of the second limiting groove 2112, thereby preventing the sleeve 210 from sliding along the length direction of the telescopic rod 100, thus achieving the limiting effect. When it is necessary to release the restriction on the sleeve 210, the sleeve 210 can be rotated in the opposite direction so that the pin 1011 returns to the first limiting groove 2111. Then the sleeve 210 can be adjusted to slide along the length of the telescopic rod 100 so that the second clamping member 400 moves away from the first clamping member 300.

[0044] With the above settings, simply rotating the sleeve 210 can restrict or release the movement of the sleeve 210, making the operation simple, convenient, and stable.

[0045] It should be noted that in the above configuration, the second limiting groove 2112 is located at the end of the first limiting groove 2111. When the sleeve 210 moves to the point where the pin 1011 abuts against the end of the first limiting groove 2111 near the second limiting groove 2112, the second clamping member 400 abuts against the first clamping member 300. In actual operation, when the operator feels the pin 1011 abutting against the end of the first limiting groove 2111, it can be determined that the first clamping member 300 and the second clamping member 400 are abutting against each other. This simplifies the operation process and eliminates the need to directly observe the situation of the first clamping member 300 and the second clamping member 400 at a relatively far position. In addition, it can prevent the pin 1011 from moving too much, which would make it difficult for the pin 1011 to align with the second limiting groove 2112.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the telescopic rod 100 includes a connecting portion 110 and a gripping portion 120. The gripping portion 120 is located at one end of the telescopic rod 100 away from the first clamping member 300, and one end of the connecting portion 110 is connected to one end of the gripping portion 120. The sliding member 200 is slidably connected to the connecting portion 110, and the first clamping member 300 is connected to the other end of the connecting portion 110.

[0047] The grip portion 120 is located at the proximal end of the telescopic rod 100. The grip portion 120 and the connecting portion 110 together form the telescopic rod 100. At least one of the grip portion 120 and the connecting portion 110 is telescopic. The grip portion 120 is for the operator to hold, the connecting portion 110 is for connection with the first clamping member 300, and the sliding member 200 is connected to the connecting portion 110 and slides along the connecting portion 110. This configuration facilitates the operator's grip and use, and the movement of the sliding member 200 along the connecting portion 110 does not affect the grip, making it convenient to use.

[0048] In some embodiments, the surface of the grip portion 120 is provided with a knurled pattern (not shown in the figure). With the above-mentioned configuration, you can increase the friction for the operator to grip the grip portion 120 and improve the stability during use.

[0049] like Figure 1 and Figure 2As shown, in some embodiments, the first clamping member 300 includes a bent rod 310, one end of which is connected to the end of the telescopic rod 100, and the end of the detection component 500 is connected to the other end of the bent rod 310. The second clamping member 400 abuts against the other end of the bent rod 310. When the second clamping member 400 abuts against the bent rod 310, the bent rod 310 and the second clamping member 400 form a ring structure, thereby forming a ring structure for the detection component 500.

[0050] The bending rod 310 has a U-shaped structure. When the cable 10 is located between the bending rod 310 and the second clamping member 400, the bending rod 310 can hook the cable 10, preventing the cable 10 from detaching from the bending rod 310 and the second clamping member 400. This ensures that the cable 10 is stably placed between the bending rod 310 and the second clamping member 400 as the second clamping member 400 approaches the bending rod 310. While the second clamping member 400 and the bending rod 310 form a ring structure, the detection component 500, driven by the second clamping member 400, also forms a ring structure around the outer circumference of the cable 10 to detect relevant parameters of the cable 10's circulation. Through the above arrangement, the cable 10 can be prevented from detaching from the bending rod 310 and the second clamping member 400 as the second clamping member 400 approaches the bending rod 310.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments, the second clamping member 400 includes a clamping portion 410 and an abutting portion 420. One end of the clamping portion 410 is connected to the sliding member 200, and the abutting portion 420 is connected to the other end of the clamping portion 410. The abutting portion 420 abuts against the end of the bent rod 310. The end of the detection component 500 is connected to the abutting portion 420.

[0052] The clamping part 410 and the abutting part 420 are vertically arranged to form an L-shaped structure. When the abutting part 420 abuts against the bending rod 310, the L-shaped structure formed by the clamping part 410 and the abutting part 420 cooperates with the U-shaped structure of the bending rod 310 to form a closed ring structure, which is wrapped around the outer periphery of the cable 10 to prevent the cable 10 from detaching from the first clamping member 300 and the second clamping member 400 during the detection process. One end of the detection component 500 is connected to the abutting part 420, and the other end is connected to the end of the bending rod 310 away from the telescopic rod 100. When the abutting part 420 abuts against the bending rod 310, the two ends of the detection component 500 can be brought as close as possible to form a ring structure.

[0053] like Figure 1 and Figure 2As shown, in some embodiments, the material of the abutment portion 420 is an elastic material. With this configuration, when the abutment portion 420 abuts against the bent rod 310, the abutment portion 420 can undergo slight deformation, thereby reducing the impact generated when the abutment portion 420 contacts the bent rod 310, preventing damage to the abutment portion 420 and the bent rod 310 due to impact, and improving their service life.

[0054] like Figure 1 and Figure 2 As shown, in some embodiments, the detection component 500 includes a flexible coil 510, one end of which is connected to a first clamping member 300, and the other end of which is connected to a second clamping member 400.

[0055] The flexible coil 510 is disposed along the first clamping member 300 and the second clamping member 400. When the second clamping member 400 moves, the flexible coil 510 can deform or extend appropriately. With the above arrangement, the flexible coil 510 does not affect the movement of the second clamping member 400, thereby allowing normal adjustment of the movement of the second clamping member 400. The flexible coil 510 can be wound around the outer periphery of the cable 10.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cable circulating current detection device, characterized in that, include: Telescopic pole; A sliding element is connected to the telescopic rod and is capable of moving along the telescopic rod; The first clamping element is connected to one end of the telescopic rod; The second clamping member is connected to the sliding member and moves with the sliding member to approach or move away from the first clamping member. The second clamping member can abut against the first clamping member. The detection component is connected at one end to the first clamping member and at the other end to the second clamping member, and moves with the second clamping member. When the first clamping member and the second clamping member abut against each other, the detection component forms a ring structure.

2. The cable circulating current detection device according to claim 1, characterized in that, The sliding component includes a sleeve that is fitted around the outer periphery of the telescopic rod and is movable along the length of the telescopic rod.

3. The cable circulating current detection device according to claim 2, characterized in that, The surface of the telescopic rod is provided with a first limiting structure, and the surface of the sleeve is provided with a second limiting structure corresponding to the first limiting structure. The first limiting structure and the second limiting structure cooperate to restrict the movement of the sleeve relative to the telescopic rod.

4. The cable circulating current detection device according to claim 3, characterized in that, The first limiting structure includes a pin, one end of which is connected to the surface of the telescopic rod, and the other end of which extends away from the telescopic rod. The second limiting structure includes a first limiting groove and a second limiting groove that are connected to each other. The length direction of the first limiting groove is the same as the movement direction of the sleeve, and the length of the second limiting groove is perpendicular to the length direction of the first limiting groove. The sleeve can rotate relative to the telescopic rod so that the pin can switch between being engaged in the first limiting groove and being engaged in the second limiting groove. When the pin is engaged in the first limiting groove, the sleeve can move along the telescopic rod. When the pin is engaged in the second limiting groove, the movement of the sleeve along the telescopic rod is restricted.

5. The cable circulating current detection device according to claim 1, characterized in that, The telescopic rod includes a connecting part and a gripping part. The gripping part is located at the end of the telescopic rod away from the first clamping member. One end of the connecting part is connected to one end of the gripping part. The sliding member is slidably connected to the connecting part, and the first clamping member is connected to the other end of the connecting part.

6. The cable circulating current detection device according to claim 5, characterized in that, The surface of the grip portion is knurled.

7. The cable circulating current detection device according to claim 1, characterized in that, The first clamping member includes a bent rod, one end of which is connected to the end of the telescopic rod, and the end of the detection component is connected to the other end of the bent rod; the second clamping member abuts against the other end of the bent rod, and when the second clamping member abuts against the bent rod, the bent rod and the second clamping member enclose to form a ring structure, thereby forming a ring structure for the detection component.

8. The cable circulating current detection device according to claim 7, characterized in that, The second clamping member includes a clamping part and an abutting part. One end of the clamping part is connected to the sliding member, and the abutting part is connected to the other end of the clamping part. The abutting part abuts against the end of the bending rod. The end of the detection component is connected to the abutting part.

9. The cable circulating current detection device according to claim 8, characterized in that, The material of the contact part is an elastic material.

10. The cable circulating current detection device according to any one of claims 1-9, characterized in that, The detection component includes a flexible coil, one end of which is connected to the first clamping member, and the other end of which is connected to the second clamping member.

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