Distance measuring equipment for electric power engineering

Abstract

A distance measuring device for electric power engineering disclosed by the present invention comprises a clamping structure, a swing structure, an elevation angle adjusting structure, a mounting seat and a socket sleeve for mounting a laser distance measuring instrument, the socket sleeve is mounted on the mounting seat, and the elevation angle adjusting structure is mounted between the socket sleeve and the mounting seat. The clamping structure is connected with the mounting base through the swinging structure, the elevation angle adjusting structure comprises an elevation angle adjusting assembly and a driven assembly, the elevation angle adjusting assembly is mounted on the mounting base, one end of the driven assembly is connected with the elevation angle adjusting assembly, the other end of the driven assembly is connected with the socket sleeve, and the socket sleeve is connected with the clamping structure. Therefore, the elevation angle of the socket sleeve is adjusted. The laser range finder can be stably erected on the outer side of the power transmission tower, the alignment direction of the laser range finder is adjusted, and then the distance between the adjacent power transmission towers is accurately measured.

Description

Technical Field

[0001] The present invention relates to the technical field of distance measuring equipment, and in particular to a distance measuring equipment for electric power engineering. Background Art

[0002] In power engineering, especially before laying high-altitude cables, it is necessary to measure the distance between adjacent poles and then calculate the length of the cable that needs to be laid between the two poles. Therefore, a handheld laser rangefinder is needed. A handheld laser rangefinder is a portable device for measuring distance. It uses laser technology to accurately determine the distance between the target and the instrument.

[0003] In the prior art, after the poles are erected, it is necessary to measure the distance between the adjacent poles. The staff uses a handheld laser rangefinder to measure. However, the distance between the adjacent poles is far, and the manual handheld laser rangefinder will shake, and it is not convenient to adjust the relevant angles to align with the adjacent poles, which leads to deviations in the measurement results. Summary of the invention

[0004] The technical problem to be solved by the present invention is that before the installation of the existing high-altitude cables, the distance between adjacent poles is measured by a manual handheld laser rangefinder. The manual handheld laser rangefinder will shake and it is not convenient to adjust the relevant angles to align with the adjacent poles, which leads to deviations in the measurement results.

[0005] In order to solve the above technical problems, the present invention provides a distance measuring device for power engineering, comprising a clamping structure, a swinging structure, an elevation adjustment structure, a mounting seat and a socket sleeve for mounting a laser rangefinder, wherein the socket sleeve is mounted on the mounting seat, and the elevation adjustment structure is installed between the socket sleeve and the mounting seat, the clamping structure is connected to the mounting seat through the swinging structure, the elevation adjustment structure comprises an elevation adjustment component and a driven component, the elevation adjustment component is mounted on the mounting seat, one end of the driven component is connected to the elevation adjustment component, and the other end is connected to the socket sleeve to adjust the elevation angle of the socket sleeve.

[0006] In some embodiments, the elevation angle adjustment assembly includes an internal threaded seat and a first threaded rod, the mounting seat is fixedly connected to the internal threaded seat on the side facing away from the swing structure, the internal threaded seat is threadedly connected to the first threaded rod, and the first end of the first threaded rod is exposed from the internal threaded seat, and one end of the driven assembly is connected to the second end of the first threaded rod.

[0007] In some embodiments, the driven assembly includes an articulated ring, an articulated seat and a connecting rod, the outer side of the second end of the first threaded rod is threadedly connected to the articulated ring, the side of the socket sleeve facing the elevation adjustment assembly is fixedly connected to the articulated seat, and the two ends of the connecting rod are respectively hinged to the articulated seat and the articulated ring.

[0008] In some embodiments, the clamping structure includes a clamping seat, a first rubber sheet and a clamping assembly, the clamping seat includes a first side and a second side arranged opposite to each other, the first side inner wall of the clamping seat is provided with the first rubber sheet, the clamping seat is connected to the mounting seat through the swing structure, the clamping assembly is connected to the second side of the clamping seat, and the clamping assembly can move relative to the clamping seat to form a clamping position with the clamping seat.

[0009] In some embodiments, the clamping assembly includes a second threaded rod, a top plate and a second rubber sheet, the second threaded rod passes through the second side and extends into the clamping seat, and the second threaded rod is threadedly connected to the second side, one end of the second threaded rod located in the clamping seat is connected to the top plate, and the side of the top plate facing away from the second threaded rod is fixedly connected to the second rubber sheet that is adapted to the first rubber sheet.

[0010] In some embodiments, the swing structure includes a column, a mounting shell, a transmission assembly and a swing assembly. The clamping structure, the column and the mounting shell are connected in sequence. The transmission assembly is partially arranged in the column and the mounting shell, and the remaining part of the transmission assembly passes through the mounting shell and is connected to the mounting seat. The swing assembly is engaged with the transmission assembly to drive the transmission assembly to rotate and drive the mounting seat to swing.

[0011] In some embodiments, the transmission assembly includes a main shaft and a worm gear, the internal rotation of the column is connected to the main shaft extending to the mounting shell, and one end of the main shaft passes through the mounting shell and is connected to the mounting seat, the outer side of the main shaft is fixedly connected to the worm gear located in the mounting shell, and the worm gear is meshed with the swing assembly.

[0012] In some embodiments, the swing assembly includes a handwheel shaft and a worm sleeve, one side of the mounting shell is rotatably connected to the handwheel shaft extending into the interior thereof, and the outer side of the handwheel shaft is fixedly connected to the worm sleeve located inside the mounting shell and meshing with the worm gear.

[0013] In some embodiments, the mounting seat includes a mounting plate and two brackets, the two brackets are relatively arranged on two sides of the mounting plate, and the socket sleeve is rotatably connected to the two brackets.

[0014] In some embodiments, an anti-slip pad is adhered to the inner cavity of the socket.

[0015] Compared with the prior art, the distance measuring device for electric power engineering in the embodiment of the present invention has the following beneficial effects:

[0016] The embodiment of the present invention clamps the clamping structure on the outer side of the horizontal angle iron frame of the transmission tower, so that the device can be stably installed on the outer side of the transmission tower, and the laser rangefinder is inserted into the socket sleeve. By rotating the swinging structure, the laser rangefinder above the mounting seat is driven to rotate, so that the laser rangefinder faces the adjacent transmission tower, and the elevation adjustment component is rotated, and the socket sleeve is driven to move through the driven component, so as to adjust the elevation angle of the laser rangefinder, so that the laser rangefinder is aligned with the adjacent transmission tower, so that the laser rangefinder can be stably installed on the outer side of the transmission tower, and its alignment direction can be adjusted, and then the distance between the adjacent transmission towers can be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a distance measuring device and a laser distance meter for electric power engineering provided by an embodiment of the present invention;

[0018] Figure 2 It is a side view of a distance measuring device and a laser distance meter for electric power engineering provided by an embodiment of the present invention;

[0019] Figure 3 is a front view of a distance measuring device for electric power engineering provided by an embodiment of the present invention;

[0020] Figure 4 is a side view of a distance measuring device for electric power engineering provided by an embodiment of the present invention;

[0021] Figure 5 is a partial internal view of a swing structure provided by an embodiment of the present invention;

[0022] Figure 6 is a top view of a socket sleeve provided by an embodiment of the present invention;

[0023] In the figure, 1, clamping structure; 11, clamping seat; 111, first side; 112, second side; 12, first rubber sheet; 13, clamping assembly; 131, second threaded rod; 132, top plate; 133, second rubber sheet; 2, swinging structure; 21, column; 22, mounting shell; 23, transmission assembly; 231, main shaft; 232, worm gear; 24, swinging assembly; 241, handwheel shaft; 242, worm sleeve; 3, elevation adjustment structure; 31, elevation adjustment assembly; 311, internal threaded seat; 312, first threaded rod; 32, driven assembly; 321, hinged ring; 322, hinged seat; 323, connecting rod; 4, mounting seat; 41, carrying plate; 42, bracket; 5, laser rangefinder; 6, socket sleeve; 61, anti-slip pad. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] like Figure 1 and Figure 3 As shown, the present invention provides a distance measuring device for power engineering, including a clamping structure 1, a swinging structure 2, an elevation adjustment structure 3, a mounting seat 4 and a socket sleeve 6 for mounting a laser rangefinder 5, the socket sleeve 6 is installed on the mounting seat 4, and the elevation adjustment structure 3 is installed between the socket sleeve 6 and the mounting seat 4, the clamping structure 1 is connected to the mounting seat 4 through the swinging structure 2, the elevation adjustment structure 3 includes an elevation adjustment component 31 and a driven component 32, the elevation adjustment component 31 is installed on the mounting seat 4, one end of the driven component 32 is connected to the elevation adjustment component 31, and the other end is connected to the socket sleeve 6 to adjust the elevation angle of the socket sleeve 6.

[0026] Based on the above structure, the clamping structure 1 is clamped on the outside of the horizontal angle iron frame of the transmission tower, so that the device can be stably installed on the outside of the transmission tower, and the laser rangefinder 5 is inserted into the socket sleeve 6. By rotating the swing structure 2, the laser rangefinder 5 above the mounting seat 4 is driven to rotate, so that the laser rangefinder 5 faces the adjacent transmission tower, and the elevation adjustment component 31 is rotated, and the socket sleeve 6 is driven to move through the driven component 32, so as to adjust the elevation angle of the laser rangefinder 5, so that the laser rangefinder 5 is aligned with the adjacent transmission tower, so that the laser rangefinder 5 can be stably installed on the outside of the transmission tower, and its alignment direction can be adjusted, and then the distance between the adjacent transmission towers can be accurately measured.

[0027] like Figure 2 and Figure 4 As shown, the elevation angle adjustment component 31 includes an internal thread seat 311 and a first threaded rod 312. The internal thread seat 311 is fixedly connected to the side of the mounting seat 4 away from the swing structure 2. The internal thread seat 311 serves as a supporting structure, and is threadedly connected to the first threaded rod 312. The first end of the first threaded rod 312 is exposed from the internal thread seat 311, which is convenient for the operator to operate and apply force. One end of the driven component 32 is connected to the second end of the first threaded rod 312 to convert the linear motion of the first threaded rod 312 into the rotational motion of the socket sleeve 6. In this embodiment, when the first threaded rod 312 is rotated, it can move forward or backward in the internal thread seat 311 due to the effect of the thread. The linear movement will be converted into the rotational motion of the driven component 32, thereby changing the elevation angle of the socket sleeve 6 (that is, the laser rangefinder 5).

[0028] In some embodiments, the driven assembly 32 includes an articulated ring 321, an articulated seat 322 and a connecting rod 323. The outer thread of the second end of the first threaded rod 312 is connected to the articulated ring 321. When the first threaded rod 312 rotates, the articulated ring 321 moves left and right with the movement of the first threaded rod 312. The side of the socket sleeve 6 facing the elevation adjustment assembly 31 is fixedly connected to the articulated seat 322 to provide a fixed point so that the connecting rod 323 can swing or rotate around this point. The two ends of the connecting rod 323 are respectively hinged to the articulated seat 322 and the articulated ring 321.

[0029] Based on the above structure, when the operator rotates the first threaded rod 312, the first threaded rod 312 will move forward or backward in the internal threaded seat 311, and the linear motion is transmitted to the hinge ring 321, thereby driving one end of the connecting rod 323 to move up and down. Since the other end of the connecting rod 323 is fixed to the socket sleeve 6 through the hinge seat 322, the movement of the connecting rod 323 will cause the entire socket sleeve 6 to rotate around the hinge seat 322, thereby achieving the adjustment of the elevation angle.

[0030] In some embodiments, the clamping structure 1 includes a clamping seat 11, a first rubber sheet 12 and a clamping assembly 13. The clamping seat 11 serves as a supporting body and is connected to the mounting seat 4 through a swinging structure 2. The clamping seat 11 includes a first side 111 and a second side 112 that are relatively arranged. The inner wall of the first side 111 of the clamping seat 11 is provided with a first rubber sheet 12 to increase friction and prevent sliding between the clamping seat 11 and the clamped object, and to protect the surface of the clamped object from being scratched or damaged. The clamping assembly 13 is connected to the second side 112 of the clamping seat 11, and the clamping assembly 13 can move relative to the clamping seat 11 to form a clamping position with the clamping seat 11, thereby firmly clamping supporting objects such as telephone poles.

[0031] In this embodiment, the clamping position formed by the clamping assembly 13 and the clamping seat 11 allows the device to be firmly fixed on the support, thereby ensuring stability during the measurement process and reducing shaking caused by external factors. Since the clamping assembly 13 can move relative to the clamping seat 11, it can adapt to different diameters of electric poles or other supports, thereby enhancing the versatility of the device. In addition, the first rubber sheet 12 not only increases the friction force, but also plays a buffering role, avoiding damage that may be caused by direct contact, and protecting the surface of supports such as electric poles.

[0032] It should be noted that the clamping seat 11 of the present embodiment is a circular groove structure, so that the clamping seat 11 can be sleeved on the outer side of the horizontal angle iron frame of the transmission tower and cooperate with the clamping assembly 13 for clamping.

[0033] In some embodiments, the clamping assembly 13 includes a second threaded rod 131, a top plate 132 and a second rubber sheet 133. The second threaded rod 131 passes through the second side 112 and extends into the clamping seat 11, and the second threaded rod 131 is threadedly connected to the second side 112. When the second threaded rod 131 is rotated, it can move forward or backward relative to the clamping seat 11. One end of the second threaded rod 131 located in the clamping seat 11 is connected to the top plate 132 so that it can move toward the first side 111 of the clamping seat 11 under the push of the second threaded rod 131, thereby compressing the clamped object. The side of the top plate 132 facing away from the second threaded rod 131 is fixedly connected to a second rubber sheet 133 adapted to the first rubber sheet 12 to provide additional friction and protect the surface of the clamped object from damage.

[0034] In this embodiment, by rotating the second threaded rod 131, the user can control the position of the top plate 132, and then adjust the clamping force, so that the operator can make adjustments according to different support diameters and required stability to ensure that the device is firmly fixed on the support. The first rubber sheet 12 and the second rubber sheet 133 work together to increase the friction between the clamping assembly 13 and the support, making the clamping more stable and reducing the possibility of slipping.

[0035] In some embodiments, the swing structure 2 includes a column 21, a mounting shell 22, a transmission assembly 23 and a swing assembly 24. The clamping structure 1, the column 21 and the mounting shell 22 are connected in sequence. The column 21 and the mounting shell 22 act as outer shells to protect the internal structure from damage caused by external influences. The transmission assembly 23 is partially arranged in the column 21 and the mounting shell 22, and the remaining part of the transmission assembly 23 passes through the mounting shell 22 and is connected to the mounting seat 4. The transmission assembly 23 is used as a structure for transmitting power, and the connection between the mounting seat 4 and the swing assembly 24 is used to achieve force transmission. Specifically, the swing assembly 24 is engaged with the transmission assembly 23 to drive the transmission assembly 23 to rotate and drive the mounting seat 4 to swing. In this embodiment, the operation of the swing assembly 24 drives the rotation of the transmission assembly 23, so that the operator can easily adjust the horizontal direction of the laser rangefinder 5 to aim at targets at different positions.

[0036] Read also Figure 5 The transmission assembly 23 includes a main shaft 231 and a worm gear 232. The main shaft 231 extending to the mounting shell 22 is rotatably connected inside the column 21. The main shaft 231 serves as a support and connecting assembly. One end of the main shaft 231 passes through the mounting shell 22 and is connected to the mounting seat 4. The outer side of the main shaft 231 is fixedly connected to a worm gear 232 located in the mounting shell 22. The worm gear 232 is meshed with the swing assembly 24 to achieve force transmission between the worm gear 232 and the swing assembly 24. In this embodiment, when the operator operates the swing assembly 24, the movement in the swing assembly 24 is transmitted to the main shaft 231 through the worm gear 232, thereby driving the entire mounting seat 4 to rotate.

[0037] In some embodiments, the swing assembly 24 includes a handwheel shaft 241 and a worm sleeve 242. One side of the mounting shell 22 is rotatably connected to the handwheel shaft 241 extending into the interior thereof, and the outer side of the handwheel shaft 241 is fixedly connected to the worm sleeve 242 located inside the mounting shell 22 and meshing with the worm wheel 232. In this embodiment, the operator can input the rotational force by manually rotating the handwheel. When the handwheel shaft 241 rotates, the worm sleeve 242 rotates accordingly, and drives the worm wheel 232 to rotate through its spiral teeth, and transmits it to the main shaft 231, thereby causing the mounting seat 4 and the laser rangefinder 5 to perform corresponding horizontal swings, and the direction of the laser rangefinder 5 can be conveniently adjusted to align with different targets. In addition, the combination of the worm sleeve 242 and the worm wheel 232 has a self-locking characteristic, that is, once the handwheel stops rotating, the transmission system will maintain the current position and will not move in the opposite direction due to gravity or other factors, which helps to maintain the stability of the laser rangefinder 5 at the selected position and avoid unnecessary errors.

[0038] In some embodiments, the mounting seat 4 includes a mounting plate 41 and two brackets 42 . The two brackets 42 are disposed opposite to each other on two sides of the mounting plate 41 , and the socket sleeve 6 is rotatably connected to the two brackets 42 .

[0039] The mounting plate 41 of this embodiment serves as a foundation, providing a solid support for the socket sleeve 6 and the elevation angle adjustment assembly, thereby ensuring the stability of the laser rangefinder 5 and other components during operation. In addition, by rotating the socket sleeve 6 and the bracket 42, the operator can easily adjust the elevation angle of the laser rangefinder 5.

[0040] like Figure 6 As shown, an anti-skid pad 61 is pasted to the inner cavity of the socket sleeve 6, which increases the friction between the laser rangefinder 5 and the inner wall of the socket sleeve 6, thereby preventing the rangefinder from sliding or loosening due to vibration or external force during use, helping to maintain the position of the laser rangefinder 5 stable and ensure the accuracy of the measurement results. The anti-skid pad 61 is made of rubber material.

[0041] The working process is as follows:

[0042] Working principle:

[0043] The first step: the clamping seat 11 is sleeved on the outer side of the horizontal angle iron frame of the transmission tower. By rotating the second threaded rod 131, the thread on the outer side of the second threaded rod 131 rotates and then drives the top plate 132 to move upward until the angle iron frame is clamped between the top plate 132 and the top wall of the inner cavity of the clamping seat 11. The first rubber sheet 12 and the second rubber sheet 133 can increase the friction between the top plate 132 and the inner cavity top wall of the clamping seat 11 and the angle iron frame, so that the device can be stably erected on the outer side of the transmission tower, and the laser rangefinder 5 is inserted into the socket sleeve 6. The anti-slip pads 61 on the left and right walls of the inner cavity of the socket sleeve 6 make the laser rangefinder 5 more stably inserted into the socket sleeve 6;

[0044] Step 2: By rotating the hand wheel shaft 241, the worm sleeve 242 is driven to rotate. Since the worm sleeve 242 is meshed with the worm wheel 232, the laser rangefinder 5 above the mounting plate 41 is driven to rotate through the main shaft 231, so that the laser rangefinder 5 faces the adjacent transmission tower;

[0045] Step 3: By rotating the first threaded rod 312, the force generated by the rotation of the outer thread of the first threaded rod 312 drives the hinged ring 321 to move outside the first threaded rod 312, and then drives the socket sleeve 6 to move through the connecting rod 323 and the hinged seat 322, so as to adjust the elevation angle of the laser rangefinder 5, so that the laser rangefinder 5 is aligned with the adjacent transmission tower, and the laser rangefinder 5 can be stably set up on the outside of the transmission tower, so that the laser rangefinder 5 is aligned with the adjacent transmission tower, and then the distance between the adjacent transmission towers is accurately measured.

[0046] In summary, an embodiment of the present invention provides a distance measuring device for electric power engineering, wherein the clamping structure 1 is clamped on the outside of the horizontal angle iron frame of the transmission tower, so that the device can be stably installed on the outside of the transmission tower, and the laser rangefinder 5 is inserted into the socket sleeve 6. By rotating the swing structure 2, the laser rangefinder 5 above the mounting seat 4 is driven to rotate, so that the laser rangefinder 5 faces the adjacent transmission tower, and the elevation adjustment component 31 is rotated, and the socket sleeve 6 is driven to move through the driven component 32, so as to adjust the elevation angle of the laser rangefinder 5, so that the laser rangefinder 5 is aligned with the adjacent transmission tower, so that the laser rangefinder 5 can be stably installed on the outside of the transmission tower, and its alignment direction can be adjusted, so as to accurately measure the distance between the adjacent transmission towers.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A distance measuring device for electric power engineering, characterized in that: It includes a clamping structure, a swinging structure, an elevation adjustment structure, a mounting seat, and a socket sleeve for mounting a laser rangefinder, wherein the socket sleeve is mounted on the mounting seat, and the elevation adjustment structure is mounted between the socket sleeve and the mounting seat, the clamping structure is connected to the mounting seat via the swinging structure, the elevation adjustment structure includes an elevation adjustment component and a driven component, the elevation adjustment component is mounted on the mounting seat, one end of the driven component is connected to the elevation adjustment component, and the other end is connected to the socket sleeve to adjust the elevation angle of the socket sleeve.

2. The distance measuring device for electric power engineering according to claim 1, characterized in that: The elevation angle adjustment assembly includes an internal threaded seat and a first threaded rod. The mounting seat is fixedly connected to the internal threaded seat on the side facing away from the swing structure. The internal threaded seat is threadedly connected to the first threaded rod, and the first end of the first threaded rod is exposed from the internal threaded seat. One end of the driven assembly is connected to the second end of the first threaded rod.

3. The distance measuring device for electric power engineering according to claim 2, characterized in that: The driven assembly includes an articulated ring, an articulated seat and a connecting rod. The outer side of the second end of the first threaded rod is threadedly connected to the articulated ring, the side of the socket sleeve facing the elevation adjustment assembly is fixedly connected to the articulated seat, and the two ends of the connecting rod are respectively articulated to the articulated seat and the articulated ring.

4. The distance measuring device for electric power engineering according to claim 1, characterized in that: The clamping structure includes a clamping seat, a first rubber sheet and a clamping assembly, the clamping seat includes a first side and a second side arranged opposite to each other, the first side inner wall of the clamping seat is provided with the first rubber sheet, the clamping seat is connected to the mounting seat through the swing structure, the clamping assembly is connected to the second side of the clamping seat, and the clamping assembly can move relative to the clamping seat to form a clamping position with the clamping seat.

5. The distance measuring device for electric power engineering according to claim 4, characterized in that: The clamping assembly includes a second threaded rod, a top plate and a second rubber sheet. The second threaded rod passes through the second side and extends into the clamping seat, and the second threaded rod is threadedly connected to the second side. One end of the second threaded rod located in the clamping seat is connected to the top plate, and the second rubber sheet adapted to the first rubber sheet is fixedly connected to the side of the top plate facing away from the second threaded rod.

6. The distance measuring device for electric power engineering according to claim 1, characterized in that: The swing structure includes a column, a mounting shell, a transmission assembly and a swing assembly. The clamping structure, the column and the mounting shell are connected in sequence. The transmission assembly is partially arranged in the column and the mounting shell, and the remaining part of the transmission assembly passes through the mounting shell and is connected to the mounting seat. The swing assembly is engaged with the transmission assembly to drive the transmission assembly to rotate and drive the mounting seat to swing.

7. The distance measuring device for electric power engineering according to claim 6, characterized in that: The transmission assembly includes a main shaft and a worm gear. The interior of the column is rotatably connected to the main shaft extending to the mounting shell, and one end of the main shaft passes through the mounting shell and is connected to the mounting seat. The outer side of the main shaft is fixedly connected to the worm gear located in the mounting shell, and the worm gear is meshed with the swing assembly.

8. The distance measuring device for electric power engineering according to claim 7, characterized in that: The swing assembly includes a handwheel shaft and a worm sleeve. One side of the mounting shell is rotatably connected to the handwheel shaft extending into the interior thereof, and the outer side of the handwheel shaft is fixedly connected to the worm sleeve located inside the mounting shell and meshing with the worm wheel.

9. The distance measuring device for electric power engineering according to claim 1, characterized in that: The mounting seat comprises a mounting plate and two brackets, the two brackets are arranged oppositely on two sides of the mounting plate, and the socket sleeve is rotatably connected to the two brackets.

10. The distance measuring device for electric power engineering according to claim 1, characterized in that: The inner cavity of the socket sleeve is pasted with an anti-skid pad.

Images