A power line detection device

Abstract

The application belongs to the technical field of power line detection, and discloses a power line detection device. The power line detection device comprises a moving mechanism and a detection mechanism. The moving mechanism comprises a first shell and a clamping assembly. The first shell is provided with a first opening. The clamping assembly is arranged on the first shell and comprises a first driving assembly, a second driving assembly and at least two rollers. The second driving assembly is arranged on the output end of the first driving assembly. The detection mechanism comprises a second shell and a detection piece. The second shell is provided with a second opening. The detection piece is arranged in the second shell. During detection, the cable enters the first shell and the second shell through the first opening and the second opening. Then, the first driving assembly drives the two rollers to move close to each other to clamp the cable. After that, the second driving assembly drives the rollers to roll along the cable axis direction, so that the detection piece moves along the cable axis direction, and the second shell can rotate relative to the first shell, thereby realizing automatic detection and omnidirectional detection of the cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power line detection, in particular to a power line detection device. BACKGROUND

[0002] The power line refers to the line used for transmitting electric energy between power plants, substations and power users. It is an important part of the power supply system and undertakes the task of transmitting and distributing electric energy.

[0003] When detecting the power line, the user needs to hold the detector for detection or use a drone or other equipment for remote detection. Specifically, since the line needs to be installed at a high position to avoid interference from other objects or people, one way is to use a lifting device to lift the worker, and then the worker holds the detection device to detect the line. This process is time-consuming and labor-intensive, and is dangerous for the worker. Another way is to use a drone for high-altitude detection, but the drone needs to be manually operated, and the position of the drone needs to be adjusted constantly during detection to meet the detection requirements. This process is also cumbersome and inconvenient to operate. SUMMARY

[0004] The purpose of the present application is to provide a power line detection device that saves the time and effort of workers and can automatically detect and detect the cable in all directions.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A power line detection device comprises:

[0007] A moving mechanism comprising a first housing and a clamping assembly, the first housing being provided with a first opening for the cable to enter; the clamping assembly is arranged on the first housing, the clamping assembly comprising a first drive assembly, a second drive assembly and at least two rollers, the output end of the first drive assembly being used to drive the two rollers arranged oppositely to move towards each other or away from each other to clamp or release the cable; the second drive assembly is arranged on the output end of the first drive assembly, and the second drive assembly is used to drive the rollers to rotate, and when the cable is clamped, the rollers can roll along the axis direction of the cable;

[0008] A detection mechanism comprising a second housing and a detection member, the second housing being provided with a second opening for the cable to enter; the second housing is rotatably arranged at one end of the first housing with the axis of the cable as the rotation center, and the detection member is arranged in the second housing for detecting the cable.

[0009] In some possible embodiments, the second shell is sleeved on the first shell, and an outer wall of the second shell is provided with a first rack in a circumferential direction; the detection mechanism further comprises a third driving assembly, which comprises a first driving member and a first gear; the first driving member is fixed to the first shell, and the first driving member is configured to drive the first gear to rotate; and the first gear is engaged with the first rack.

[0010] In some possible embodiments, the first driving assembly comprises a second driving member, a third shell and a first connecting member; the third shell is sleeved outside the first shell; the second driving member is configured to drive the third shell to rotate around the axis of the first shell as a rotation center; an end face of the third shell is provided with an arc-shaped groove; one end of the first connecting member penetrates through the first shell and is slidably connected with the arc-shaped groove; and the roller is rotationally connected to the other end of the first connecting member; the two arc-shaped grooves are centrally and symmetrically arranged on the end face of the third shell; when the third shell rotates, the two first connecting members respectively slide in the two arc-shaped grooves, so that the two rollers move towards each other or away from each other.

[0011] In some possible embodiments, each of the end faces of the two ends of the third shell is provided with two arc-shaped grooves that are centrally and symmetrically arranged; and the first connecting member is correspondingly arranged with the arc-shaped grooves; and the output end of the first driving assembly is further provided with a base, and the two first connecting members located on the same side of the first shell are connected through the base.

[0012] In some possible embodiments, the second driving member comprises a worm; and the moving mechanism further comprises a fourth shell, which is fixed to an outer wall of the first shell; an outer wall of the third shell is provided with an arc-shaped worm rack in a circumferential direction; the worm is rotatable relative to the fourth shell, and the worm is engaged with the arc-shaped worm rack.

[0013] In some possible embodiments, the first connecting member comprises a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion form an L-shaped structure; a side wall of the first shell is provided with a sliding hole in a radial direction; the first connecting portion is attached to an inner wall of the sliding hole and is slidably connected with the sliding hole; and the second connecting portion is slidably connected with the arc-shaped groove.

[0014] In some possible implementation manners, the output end of the first driving assembly is provided with a base, the roller comprises a roller body and a rotating shaft, the roller body is fixed to the rotating shaft, the rotating shaft is rotationally connected with the base, the second driving assembly comprises a first bevel gear, a third driving member and a second bevel gear, the first bevel gear is fixedly connected with the rotating shaft, the third driving member is arranged on the base, and the second bevel gear is fixed to the output end of the third driving member and meshes with the first bevel gear.

[0015] In some possible implementation manners, at least two rollers are connected with one base, the base comprises a second connecting member and at least two rotating seats, the rotating seats are arranged on the second connecting member in the axial direction of the cable, and at least two rollers are arranged in one-to-one correspondence with at least two rotating seats.

[0016] In some possible implementation manners, two rollers are connected with one base, two first bevel gears correspond to two rollers in one-to-one correspondence, the third driving member is a double-output motor, two second bevel gears are fixed to two output ends of the third driving member respectively, and two first bevel gears correspondingly mesh with two second bevel gears.

[0017] In some possible implementation manners, a plurality of detection members are arranged on the inner wall of the second shell in a circumferential direction.

[0018] The present application has the following beneficial effects:

[0019] The power line detection device provided by the present application comprises a moving mechanism and a detection mechanism. During detection, the cable is arranged into the first shell and the second shell through the first opening and the second opening, then the first driving assembly drives two rollers arranged in opposition to move close to each other to clamp the cable, and then the second driving assembly drives the roller to roll along the axial direction of the cable, thereby driving the second shell to move along the axial direction of the cable. Since the detection member is arranged in the second shell, the detection member can also move along the axial direction of the cable to detect the cable. In this way, the time and effort of the staff are saved, and automatic detection of the cable can be realized. On the basis of the detection member moving along the axial direction of the cable to detect part of the cable, since the second shell can rotate relative to the first shell with the axial line of the cable as the rotation center, the detection member can rotate along the circumferential direction of the cable, thereby realizing omnidirectional detection of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a first structural schematic view of the power line detection device provided by the present application;

[0021] Figure 2Fig. 2 is a second structural schematic view of the power line detection device provided by the present application;

[0022] Figure 3 Fig. 3 is a sectional view of the power line detection device provided by the present application;

[0023] Figure 4 Fig. 4 is a structural schematic view of the detection mechanism involved in the present application.

[0024] Fig. 1 is a structural schematic view of the detection mechanism involved in the present application.

[0025] 1, moving mechanism; 11, first housing; 111, first opening; 112, annular groove; 113, sliding hole; 12, first driving assembly; 121, second driving member; 1211, worm; 1212, rotating part; 122, third housing; 1221, third opening; 1222, arc-shaped groove; 1223, arc-shaped worm rack; 123, first connecting member; 1231, first connecting part; 1232, second connecting part; 124, base; 1241, second connecting member; 1242, rotating seat; 13, second driving assembly; 131, first bevel gear; 132, third driving member; 133, second bevel gear; 14, roller; 15, fourth housing;

[0026] 2, detection mechanism; 21, second housing; 211, second opening; 212, first rack; 213, annular protrusion; 22, third driving assembly; 221, first driving member; 222, first gear; 23, assembling seat; 100, cable. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to serve only as an explanation of the present application and not as a limitation thereof. It should also be noted that, for the sake of convenience, only the parts related to the present application are shown in the drawings and not all the structures.

[0028] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.

[0030] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0031] As Figures 1 to 4As shown, the present application provides a power line detection device, the power line detection device comprises a moving mechanism 1 and a detection mechanism 2, the moving mechanism 1 comprises a first shell 11 and a clamping assembly, the first shell 11 is provided with a first opening 111 for the cable 100 to enter; the clamping assembly is arranged on the first shell 11, the clamping assembly comprises a first driving assembly 12, a second driving assembly 13 and at least two rollers 14, the output end of the first driving assembly 12 is used to drive the two rollers 14 arranged oppositely to move towards each other or away from each other to clamp or release the cable 100; the second driving assembly 13 is arranged on the output end of the first driving assembly 12, the second driving assembly 13 is used to drive the roller 14 to rotate, when the cable 100 is clamped, the roller 14 can roll along the axis direction of the cable 100; the detection mechanism 2 comprises a second shell 21 and a detection piece, the second shell 21 is provided with a second opening 211 for the cable 100 to enter; the second shell 21 is rotatably arranged on one end of the first shell 11 with the axis of the cable 100 as the rotation center, the detection piece is arranged in the second shell 21 and used to detect the cable 100. In detection, the cable 100 enters the first shell 11 and the second shell 21 through the first opening 111 and the second opening 211, then the first driving assembly 12 drives the two rollers 14 to move towards each other to clamp the cable 100, then the second driving assembly 13 drives the roller 14 to roll along the axis direction of the cable 100, thereby driving the second shell 21 to move along the axis direction of the cable 100, since the detection piece is arranged in the second shell 21, the detection piece can also move along the axis direction of the cable 100 to detect the cable 100, in this way, the time and effort of the staff are saved, and automatic detection of the cable 100 can be realized. On the basis that the detection piece can detect part of the cable 100 by moving along the axis direction of the cable 100, since the second shell 21 can rotate relative to the first shell 11 with the axis of the cable 100 as the rotation center, the detection piece can rotate along the circumferential direction of the cable 100, thereby full-range detection of the cable 100 can be realized.

[0032] Optionally, in this embodiment, the second housing 21 is slidably sleeved on the first housing 11. A first rack 212 is provided circumferentially on the outer wall of the second housing 21. The detection mechanism 2 further includes a third drive assembly 22, which includes a first drive member 221 and a first gear 222. The first drive member 221 is fixed to the first housing 11 and drives the first gear 222 to rotate. The first gear 222 meshes with the first rack 212. The first drive member 221 driving the first gear 222 to rotate enables the second housing 21 to rotate around the axis of the cable 100. This configuration achieves automatic rotation of the second housing 21 relative to the first housing 11 with high rotational accuracy, further improving the automation level of the power line detection device. Optionally, the first drive member 221 is a servo motor. In other embodiments, a handle can also be provided on the outer wall of the second housing 21, allowing operators to manually rotate the second housing 21.

[0033] Optionally, such as Figure 3 As shown, in this embodiment, one end face of the first housing 11 is provided with an annular groove 112, and one end face of the second housing 21 is provided with an annular protrusion 213. The annular protrusion 213 is inserted into the annular groove 112. This arrangement results in a compact structure and saves space. Specifically, the cross-section of the annular groove 112 is a T-shaped groove, which prevents the second housing 21 from detaching from the first housing 11 when the second housing 21 rotates relative to the first housing 11. In other embodiments, one end face of the first housing 11 is provided with an annular protrusion 213, and one end face of the second housing 21 is provided with an annular groove 112, with the annular protrusion 213 inserted into the annular groove 112. Alternatively, the second housing 21 is slidably sleeved on the outside of the first housing 11, with the inner wall surface of the second housing 21 fitting against the outer wall surface of the first housing 11.

[0034] To improve the rotation efficiency of the detection component, optionally, in this embodiment, two third drive components 22 are provided, and the two third drive components 22 are arranged on opposite sides of the second housing 21. Two first gears 222 are respectively arranged at the output ends of the two third drive components 22, and the two first gears 222 mesh with the same first rack 212.

[0035] Optionally, in the embodiment, the first driving assembly 12 comprises a second driving member 121, a third shell 122 and a first connecting member 123, the third shell 122 is sleeved outside the first shell 11, the second driving member 121 is used to drive the third shell 122 to rotate with the axis of the first shell 11 as the rotation center, the end face of the third shell 122 is provided with an arc-shaped groove 1222, one end of the first connecting member 123 passes through the first shell 11 and is in sliding connection with the arc-shaped groove 1222, and the roller 14 is rotationally connected to the other end of the first connecting member 123; the two arc-shaped grooves 1222 are centrally and symmetrically arranged on the end face of the third shell 122, when the third shell 122 rotates, the two first connecting members 123 respectively slide in the two arc-shaped grooves 1222, so that the two rollers 14 move towards each other or away from each other. The two arc-shaped grooves 1222 are centrally and symmetrically arranged on the end face of the third shell 122, the third shell 122 is driven to rotate with the axis of the first shell 11 as the rotation center, the first connecting member 123 is driven to slide in the arc-shaped groove 1222, and thus the two rollers 14 can move towards each other or away from each other, the structure is simple, the clamping process is simple, and cables 100 of different diameters can be clamped, so the application range is wide. Optionally, the third shell 122 is provided with a third opening 1221 for the cable 100 to enter. In the embodiment, the first shell 11, the second shell 21 and the third shell 122 are all circular sleeves, so the structure is simple and the machining is convenient.

[0036] When the cable 100 is clamped, in order to ensure the stability of the clamping process, optionally, in the embodiment, the end face of each of the two ends of the third shell 122 is provided with two arc-shaped grooves 1222 that are centrally and symmetrically arranged, and the first connecting member 123 is correspondingly arranged in the arc-shaped groove 1222; the output end of the first driving assembly 12 is further provided with a base 124, and the two first connecting members 123 located on the same side of the first shell 11 are connected through the base 124.

[0037] Optionally, in the embodiment, the second driving member 121 comprises a worm 1211, and the moving mechanism 1 further comprises a fourth shell 15, the fourth shell 15 is fixed to the outer wall of the first shell 11, the outer wall of the third shell 122 is provided with an arc-shaped worm gear rack 1223 in the circumferential direction, the worm 1211 can rotate relative to the fourth shell 15, and the worm 1211 is in meshing connection with the arc-shaped worm gear rack 1223. Through the transmission of the worm 1211 and the arc-shaped worm gear rack 1223, the rotation of the third shell 122 with the axis of the first shell 11 as the rotation center is realized, and the clamping degree of the cable 100 can be adjusted. Optionally, as shown in FIG. 6, the arc-shaped worm gear rack 1223 is arranged on the outer wall of the third shell 122, and the worm 1211 is arranged on the fourth shell 15. Figure 2As shown in the figure, in the embodiment, the second driving member 121 further comprises a rotating part 1212, which is located outside the fourth shell 15 and at the front end of the first shell 11, and is fixedly connected with one end of the worm 1211 and coaxially arranged with the worm 1211. The staff is located at the front end of the first shell 11, and manually rotates the rotating part 1212 to realize clamping of the cable 100, which is convenient to operate. Alternatively, the second driving member 121 further comprises a motor fixed to the fourth shell 15, and the output end of the motor is fixedly connected with the worm 1211 for driving the worm 1211 to rotate. The worm 1211 is driven to rotate by the motor, which can further improve the automation degree of the power line detection device.

[0038] In other embodiments, the second driving member 121 comprises a second gear, and the moving mechanism 1 further comprises a fourth shell 15 fixed to the outer wall of the first shell 11, and the outer wall of the third shell 122 is provided with a second gear rack in the circumferential direction, and the second gear can rotate relative to the fourth shell 15, and the second gear is engaged with the second gear rack. Through the gear and rack transmission, the rotation of the third shell 122 around the axis of the first shell 11 is realized.

[0039] Alternatively, as Figure 3 As shown in the figure, in the embodiment, the first connecting member 123 comprises a first connecting part 1231 and a second connecting part 1232, which form an L-shaped structure, the side wall of the first shell 11 is provided with a sliding hole 113 in the radial direction, the first connecting part 1231 is attached to the inner wall of the sliding hole 113 and is slidingly connected with the sliding hole 113, and the second connecting part 1232 is slidingly connected with the arc-shaped groove 1222. The first connecting part 1231 and the second connecting part 1232 form an L-shaped structure, which facilitates the processing of the first connecting member 123. The first connecting part 1231 is attached to the inner wall of the sliding hole 113, which guides the sliding of the first connecting member 123 and also better supports the roller 14.

[0040] Alternatively, as Figure 2 and Figure 3As shown, in the embodiment, the output end of the first driving assembly 12 is provided with a base 124, the roller 14 comprises a roller body and a rotating shaft, the roller body is fixed to the rotating shaft, the rotating shaft is rotationally connected with the base 124, the second driving assembly 13 comprises a first bevel gear 131, a third driving member 132 and a second bevel gear 133, the first bevel gear 131 is fixedly connected with the rotating shaft, the third driving member 132 is arranged on the base 124, the second bevel gear 133 is fixed to the output end of the third driving member 132 and meshes with the first bevel gear 131. The rotation of the second bevel gear 133 is driven by the third driving member 132 to drive the rotation of the first bevel gear 131, thereby realizing the rotation of the roller 14. The bevel gear and the bevel gear are meshed to drive, which is compact in structure and saves space. In other embodiments, gear transmission or direct fixing of the third driving member 132 and the rotating shaft of the roller 14 can be adopted to realize the rotation of the roller 14, which is not limited to the embodiment.

[0041] In order to improve the moving speed of the detection member moving along the axis direction of the cable 100 and ensure the stability of the movement, optionally, as shown in Figure 2 and Figure 3 As shown, one base 124 is connected with at least two rollers 14, the base 124 comprises a second connecting member 1241 and at least two rotating seats 1242, the rotating seats 1242 are arranged on the second connecting member 1241 in the axial direction of the cable 100, and the at least two rollers 14 are arranged in one-to-one correspondence with the at least two rotating seats 1242.

[0042] Optionally, in the embodiment, the end face of the second connecting member 1241 connected with the first connecting member 123 is arc-shaped and is shaped with the inner wall of the first shell 11. When the first connecting member 123 moves away from the cable 100, the interference between the base 124 and the inner wall of the first shell 11 is prevented, and when the base 124 contacts the inner wall of the first shell 11, it is a limit position of the first connecting member 123.

[0043] Optionally, in the embodiment, one base 124 is connected with two rollers 14, two first bevel gears 131 correspond to the two rollers 14, the third driving member 132 is a double-output motor, two second bevel gears 133 are fixedly arranged on the two output ends of the third driving member 132, and the two first bevel gears 131 correspondingly mesh with the two second bevel gears 133. One base 124 is connected with two rollers 14, which improves the moving speed and saves the cost. In addition, through a double-output motor, the synchronous rotation of the two rollers 14 can be realized. Optionally, in the embodiment, the two rollers 14 are symmetrically distributed relative to the base 124.

[0044] Optionally, a plurality of detection pieces are provided, and the plurality of detection pieces are circumferentially spaced apart on the inner wall of the second shell 21. If one detection piece is provided, the detection piece needs to be rotated one circle along the cable 100 to achieve 360-degree detection. If a plurality of detection pieces are provided, the detection efficiency is improved. In the embodiment, three detection pieces are provided. In addition, in order to facilitate disassembly and assembly of the detection pieces, as shown in FIG. 2, the detection mechanism 2 further comprises a mounting seat 23, and the detection pieces are arranged on the inner wall of the second shell 21 through the mounting seat 23. The detection pieces are detachably connected with the mounting seat 23. Figure 4

[0045] The working process of the power line detection device provided in the embodiment is as follows:

[0046] First step: make the first opening 111 of the first shell 11, the second opening 211 of the second shell 21 and the third opening 1221 of the third shell 122 all communicate and align, so that the cable 100 enters into the first shell 11 and the second shell 21 through the first opening 111, the second opening 211 and the third opening 1221, and then the cable 100 is located between the two rollers 14 which are oppositely arranged. Specifically, the first shell 11 remains stationary, the third shell 122 is driven to rotate by the first driving assembly 12, so that the third opening 1221 communicates and aligns with the first opening 111; the second shell 21 is driven to rotate by the third driving assembly 22, so that the second opening 211 communicates and aligns with the first opening 111.

[0047] Second step: rotate the worm 1211, since the worm 1211 is engaged with the arc-shaped worm gear rack 1223, the third shell 122 can be driven to rotate relative to the first shell 11, and then the arc-shaped groove 1222 is driven to rotate, so that the first connecting piece 123 moves into the first shell 11, and then the two rollers 14 are driven to move in the direction of approaching each other, so as to clamp the cable 100. Then the detection piece is installed on the mounting seat 23 to adapt to the cable 100;

[0048] Third step: start the third driving piece 132 and the first driving piece 221, the third driving piece 132 drives the roller 14 to rotate, so that the power line detection device as a whole moves along the axis direction of the cable 100, so that the detection piece also moves along the axis direction of the cable 100. In the above process, the first driving piece 221 drives the second shell 21 to rotate relative to the first shell 11 with the axis of the cable 100 as the rotation center, so that the detection piece can detect the cable 100 in all directions.

[0049] ​Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A power line testing device, characterized in that, include: The moving mechanism (1) includes a first housing (11) and a clamping assembly. The first housing (11) has a first opening (111) for the cable (100) to enter. The clamping assembly is disposed on the first housing (11) and includes a first drive assembly (12), a second drive assembly (13), and at least two rollers (14). The output end of the first drive assembly (12) is used to drive the two rollers (14) arranged opposite to each other to move closer or further apart to clamp or release the cable (100). The second drive assembly (13) is disposed on the output end of the first drive assembly (12) and is used to drive the rollers (14) to rotate. When the cable (100) is clamped, the rollers (14) can roll along the axial direction of the cable (100). The first drive assembly (12) includes a second drive member (121). The system comprises a third housing (122) and a first connecting member (123). The third housing (122) is fitted over the first housing (11). The second driving member (121) drives the third housing (122) to rotate around the axis of the first housing (11). The end face of the third housing (122) is provided with an arc-shaped groove (1222). One end of the first connecting member (123) passes through the first housing (11) and is slidably connected to the arc-shaped groove (1222). The roller (14) is rotatably connected to the other end of the first connecting member (123). The two arc-shaped grooves (1222) are centrally symmetrically arranged on the end face of the third housing (122). When the third housing (122) rotates, the two first connecting members (123) slide in the two arc-shaped grooves (1222) respectively, so that the two rollers (14) move towards each other or away from each other. The detection mechanism (2) includes a second housing (21) and a detection component. The second housing (21) has a second opening (211) for the cable (100) to enter. The second housing (21) is rotatably disposed at one end of the first housing (11) with the axis of the cable (100) as the rotation center. The detection component is disposed inside the second housing (21) for detecting the cable (100).

2. The power line testing device according to claim 1, characterized in that, The second housing (21) is slidably sleeved on the first housing (11). The outer wall of the second housing (21) is provided with a first rack (212) along the circumferential direction. The detection mechanism (2) also includes a third drive assembly (22). The third drive assembly (22) includes a first drive member (221) and a first gear (222). The first drive member (221) is fixed to the first housing (11). The first drive member (221) is used to drive the first gear (222) to rotate. The first gear (222) meshes with the first rack (212).

3. The power line testing device according to claim 1, characterized in that, The end faces of the third housing (122) at both ends each have two centrally symmetrical arc grooves (1222), and the first connector (123) is correspondingly provided with the arc grooves (1222); the output end of the first drive assembly (12) is also provided with a base (124), and the two first connectors (123) located on the same side of the first housing (11) are connected through the base (124).

4. The power line testing device according to claim 1, characterized in that, The second driving member (121) includes a worm (1211), and the moving mechanism (1) also includes a fourth housing (15). The fourth housing (15) is fixed to the outer wall of the first housing (11). The outer wall of the third housing (122) is provided with an arc-shaped worm gear rack (1223) along the circumferential direction. The worm (1211) can rotate relative to the fourth housing (15), and the worm (1211) meshes with the arc-shaped worm gear rack (1223).

5. The power line testing device according to claim 1, characterized in that, The first connector (123) includes a first connecting part (1231) and a second connecting part (1232). The first connecting part (1231) and the second connecting part (1232) form an L-shaped structure. The side wall of the first housing (11) is provided with a sliding hole (113) in the radial direction. The first connecting part (1231) fits against the inner wall of the sliding hole (113) and is slidably connected to the sliding hole (113). The second connecting part (1232) is slidably connected to the arc groove (1222).

6. The power line testing device according to claim 1, characterized in that, The first drive assembly (12) has a base (124) at its output end. The roller (14) includes a roller body and a rotating shaft. The roller body is fixed to the rotating shaft, and the rotating shaft is rotatably connected to the base (124). The second drive assembly (13) includes a first bevel gear (131), a third drive member (132), and a second bevel gear (133). The first bevel gear (131) is fixedly connected to the rotating shaft. The third drive member (132) is disposed on the base (124). The second bevel gear (133) is fixed to the output end of the third drive member (132) and meshes with the first bevel gear (131).

7. The power line testing device according to claim 6, characterized in that, A base (124) is connected to at least two rollers (14). The base (124) includes a second connector (1241) and at least two rotating seats (1242). The rotating seats (1242) are spaced apart on the second connector (1241) along the axial direction of the cable (100). At least two rollers (14) are arranged in a one-to-one correspondence with at least two rotating seats (1242).

8. The power line testing device according to claim 7, characterized in that, A base (124) is connected to two rollers (14), and two first bevel gears (131) correspond one-to-one with the two rollers (14). The third drive unit (132) is a dual-output motor, and two second bevel gears (133) are fixed to the two output ends of the third drive unit (132). The two first bevel gears (131) mesh with the two second bevel gears (133).

9. The power line testing device according to any one of claims 1-8, characterized in that, The detection element is provided in multiple ways, and the multiple detection elements are circumferentially spaced on the inner wall of the second housing (21).

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