A power cable installation device

Abstract

The present application discloses a power cable installation device, including a base. A bracket and a limiting column are fixedly installed on the top of the base. The outer surface of the bracket is rotatably installed with a left clamping cylinder and a right clamping cylinder. The top parts of the left clamping cylinder and the right clamping cylinder are respectively fixedly connected with a left opening plate and a right opening plate. A clamping groove is formed in the middle of the inner walls of the left clamping cylinder and the right clamping cylinder, and a metal sheet is movably clamped in the inner wall of the clamping groove. In this device, a permanent magnet located inside the limiting groove generates a magnetic suction force on the metal rod to suck the metal rod upward into the inner wall of the limiting groove, and the left clamping cylinder and the left opening plate are clamped by the end of the limiting groove, so that they cannot be separated under the action of external force. This design not only doubles the installation efficiency of the cable body, but also eliminates the installation of fasteners such as bolts, saving time and effort.

Description

Technical Field

[0001] This application relates to the technical field of power cable installation, and particularly to a power cable installation device. Background Art

[0002] Power cables are usually formed by stranding several wires. They are similar to ropes. The wires in each group are insulated from each other and twisted around a center. The entire outer surface is wrapped with a highly insulating covering layer, so that they can be electrified and can achieve the function of long-distance power transmission. The installation devices of power cables usually provide functions such as supporting and fixing the cables. Their forms are usually mainly semi-circular metal parts that clamp each other. Two groups of semi-circular metal rings are attached to the cable surface and fixed by bolts to clamp the cable. However, the generally adopted form of separated distribution and bolt fixation greatly reduces the installation efficiency of the device. For the installation of a power cable, its installation distance is very long, and the number of installation parts for fixing and supporting may be very large. If the above-mentioned backward installation method is still used, it is not conducive to the efficient installation of the cable, and the weight of the cable will also exacerbate the wear between the semi-circular metal parts. Although rubber pads are used in the prior art, they will cause non-tight fitting and small contact area for power cables of different sizes, resulting in excessive wear. Therefore, this device designs a power cable installation device to overcome the above defects. Summary of the Invention

[0003] This application proposes a power cable installation device, which has the advantages of convenient installation, good buffering effect and strong applicability, and is used to solve the problems of cumbersome bolt installation of cables in the prior art and wear caused by improper adaptation of different sizes.

[0004] To achieve the above object, the present application adopts the following technical solutions: A power cable installation device includes a base, on the top of which a bracket and a limit post are fixedly installed. The outer surface of the bracket is rotatably installed with a left clamping cylinder and a right clamping cylinder. The tops of the left clamping cylinder and the right clamping cylinder are respectively fixedly connected with a left opening plate and a right opening plate. The middle parts of the inner walls of the left clamping cylinder and the right clamping cylinder are both provided with clamping grooves, and the inner walls of the clamping grooves are movably clamped with metal sheets. The tops of the metal sheets are fixedly connected with buffer pads II. The cable body is clamped and placed between the inner walls of the left clamping cylinder and the left opening plate through the metal sheets and the buffer pads II. The bottoms of the inner sides of the left clamping cylinder and the right clamping cylinder are both provided with placement grooves and installation grooves. A spring I is movably sleeved inside the placement groove, and the two ends of the spring I are elastically connected with the left clamping cylinder and the right clamping cylinder respectively. A limit groove is provided at the top of the inner side of the left clamping cylinder, and a permanent magnet is fixedly installed inside the limit groove. A fixing groove is provided at the top of the inner side of the right clamping cylinder, and a spring II and a metal rod are movably sleeved inside the fixing groove. The two ends of the spring II are elastically connected with the metal rod and the fixing groove respectively. The outer end of the metal rod penetrates through the outer side of the right clamping cylinder and is fixedly connected with a fixing block. The inner end of the metal rod is adaptively clamped in the limit groove and magnetically attracts with the permanent magnet.

[0005] Further, the left clamping cylinder and the right clamping cylinder are both in a semi-circular ring shape and can form a complete ring structure with each other. The left opening plate and the right opening plate are symmetrically distributed in an open state.

[0006] Further, buffer pads I are fixedly connected to the tops of the inner ring surfaces of the left clamping cylinder and the right clamping cylinder, and buffer pads III are fixedly connected to the bottoms of the inner ring surfaces of the left clamping cylinder and the right clamping cylinder. The buffer pads I are abutted against the outer surface of the cable body by extrusion, and the buffer pads III are abutted against the outer side surfaces of the buffer pads II by extrusion.

[0007] Further, the limit posts are distributed in a "U" shape. There are two groups of limit posts that are symmetrically arranged front and back. A limit ring is fixedly installed in the middle of the outer surface of the limit post, and the limit ring is adaptively clamped in the middle of the inner wall of the installation groove.

[0008] Further, the limit ring is used to limit the left clamping cylinder from moving to the right side of the limit ring around the axis of the bracket, and to limit the right clamping cylinder from moving to the left side of the limit ring around the axis of the bracket.

[0009] Further, when the left clamping cylinder and the right clamping cylinder are separated and at the maximum opening and closing angle, the metal sheets are in a straight distribution.

[0010] Further, the metal rod is obliquely and adaptively inserted into the fixing groove and the limit groove, and the axial cross-sectional shape of the metal rod is "T" shaped.

[0011] Furthermore, the permanent magnet is located at the top of the inner wall of the limiting groove and maintains a minimum distance greater than zero from the top end of the metal rod.

[0012] An installation device for a power cable provided by the present application has the following effects:

[0013] 1. The device has been redesigned, changing the fixing method for the cable body. It adopts a combination of a buckle design and wrapping with a buffer to efficiently install the cable body. By providing a bracket with a left clamping cylinder and a right clamping cylinder rotatably installed on its outer surface, when the left clamping cylinder and the right clamping cylinder are in contact and symmetrically distributed, they can form a complete circular ring structure. The two are elastically connected by a first spring. When the cable body enters the gap between the left clamping cylinder and the right clamping cylinder downward, by pressing the second buffer pad and the metal sheet, the left clamping cylinder and the right clamping cylinder are pulled toward the axis side of the cable body, enabling the left clamping cylinder and the right clamping cylinder to automatically combine. When the left clamping cylinder and the right clamping cylinder are in contact and combined, the permanent magnet located inside the limiting groove generates a magnetic attraction force on the metal rod, sucking the metal rod upward into the inner wall of the limiting groove, and clamping the left clamping cylinder and the left opening plate through the end of the limiting groove, making them unable to separate under external force. This design not only doubles the installation efficiency of the cable body but also eliminates the installation of fasteners such as bolts, saving time and effort.

[0014] 2. At the same time, the device also arranges the first buffer pad and the third buffer pad one above the other on the upper and lower sides of the inner walls of the left clamping cylinder and the right clamping cylinder respectively. By movably clamping a metal sheet inside the card slot, when the left clamping cylinder and the right clamping cylinder are in an open state, the metal sheet and the second buffer pad are in a flat state. At this time, the cable body uses its own weight and external force to downwardly bend the second buffer pad and the second buffer pad and squeeze the second buffer pad to cause it to deform, increasing the contact area with the cable body. At the same time, the bending of the metal sheet also enables the second buffer pad to more closely fit the lower surface of the cable body. As the left clamping cylinder and the right clamping cylinder are combined by rotation, the first buffer pad located at the top of the inner walls of the left clamping cylinder and the right clamping cylinder downwardly adheres to and squeezes the upper surface of the cable body, thereby providing all-round buffer support for the cable body. And when the metal sheet bends downward, on the one hand, its own elastic potential energy provides support for the cable body, and on the other hand, the third buffer pad used to abut and support the metal sheet further provides elastic support for the cable body by deforming after being pressed, thereby providing a shock absorption and buffering function for the cable body after installation.

[0015] 3. Finally, elastic variable-size adaptation spaces are generated in the inner wall of the complete circular ring structure formed by the deformable and compressible cushion one, cushion two, and cushion three. The left clamping cylinder and the right clamping cylinder form a complete circular ring structure with a size larger than the cable body. Inside this circular ring structure, metal sheets are clamped in the middle of the inner walls of the left clamping cylinder and the right clamping cylinder, and cushion two is used to provide buffer support for the cable body. The metal sheets and cushion two are bent to provide adaptation support for the cable body. Then, the rotating left clamping cylinder and right clamping cylinder are combined by rotation to form a complete circular ring. The cushion one at the top of the inner walls of the left clamping cylinder and the right clamping cylinder provides all-round fixation and abutment adaptation for the upper surface of the cable body. The degree of bending deformation of the metal sheets and cushion two can be flexibly changed according to the size of the cable body, thereby enhancing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0017] Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:

[0018] Figure 1 is a separated schematic view of the overall structure of the present invention;

[0019] Figure 2 is a front three-dimensional schematic view of the overall structure of the present invention;

[0020] Figure 3 is a front sectional view of the overall structure of the present invention;

[0021] Figure 4 of the present invention Figure 3 is an enlarged schematic view of the structure at A in the present invention;

[0022] Figure 5 is a front sectional view of the installation groove of the present invention;

[0023] Figure 6 of the present invention Figure 5 is an enlarged schematic view of the structure at B in the present invention;

[0024] Figure 7 is a top sectional view of the overall structure of the present invention;

[0025] Figure 8 is a front external view of the overall structure of the present invention.

[0026] Wherein: 1. Base; 2. Bracket; 3. Limit post; 4. Limit ring; 5. Left clamping cylinder; 6. Left opening plate; 7. Right clamping cylinder; 8. Right opening plate; 9. First buffer pad; 10. Card slot; 11. Metal sheet; 12. Second buffer pad; 13. Third buffer pad; 14. Cable body; 15. Placing groove; 16. Installation groove; 17. First spring; 18. Fixed groove; 19. Limit groove; 20. Permanent magnet; 21. Second spring; 22. Metal rod; 23. Fixed block. Detailed implementation manner

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. Embodiment 1

[0028] Please refer to Figures 1 - 8 , the present invention discloses a power cable installation device, including a base 1, a bracket 2 and a limit post 3 are fixedly installed on the top of the base 1, a left clamping cylinder 5 and a right clamping cylinder 7 are rotatably installed on the outer surface of the bracket 2, a left opening plate 6 and a right opening plate 8 are respectively fixedly connected to the tops of the left clamping cylinder 5 and the right clamping cylinder 7, card slots 10 are respectively opened in the middle parts of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7, a metal sheet 11 is movably clamped in the inner wall of the card slot 10, a second buffer pad 12 is fixedly connected to the top of the metal sheet 11, a cable body 14 is clamped and placed between the inner walls of the left clamping cylinder 5 and the left opening plate 6 through the metal sheet 11 and the second buffer pad 12, placing grooves 15 and installation grooves 16 are respectively opened at the bottoms of the inner sides of the left clamping cylinder 5 and the right clamping cylinder 7, a first spring 17 is movably sleeved in the placing groove 15, and both ends of the first spring 17 are elastically connected to the left clamping cylinder 5 and the right clamping cylinder 7 respectively, a limit groove 19 is opened at the top of the inner side of the left clamping cylinder 5, a permanent magnet 20 is fixedly installed in the limit groove 19, a fixed groove 18 is opened at the top of the inner side of the right clamping cylinder 7, a second spring 21 and a metal rod 22 are movably sleeved in the fixed groove 18, both ends of the second spring 21 are elastically connected to the metal rod 22 and the fixed groove 18 respectively, the outer end of the metal rod 22 penetrates through the outer side of the right clamping cylinder 7 and is fixedly connected to a fixed block 23, and the inner end of the metal rod 22 is adaptively clamped in the limit groove 19 and magnetically attracted to the permanent magnet 20;

[0029] This device has been redesigned, changing the fixing method for the cable body 14. An efficient installation of the cable body 14 is achieved by combining a buckle design with wrapping by a buffer. There is a bracket 2 provided, and a left clamping cylinder 5 and a right clamping cylinder 7 are rotatably installed on its outer surface. When the left clamping cylinder 5 and the right clamping cylinder 7 are in contact and symmetrically distributed, they can form a complete circular ring structure. The two are elastically connected by a first spring 17. When the cable body 14 enters the gap between the left clamping cylinder 5 and the right clamping cylinder 7 downward, by pressing the second buffer pad 12 and the metal sheet 11, the left clamping cylinder 5 and the right clamping cylinder 7 are pulled toward the axis side of the cable body 14, so that the left clamping cylinder 5 and the right clamping cylinder 7 can automatically combine. When the left clamping cylinder 5 and the right clamping cylinder 7 are in contact and combined with each other, a magnetic suction force is generated on the metal rod 22 by the permanent magnet 20 located inside the limiting groove 19, sucking the metal rod 22 upward into the inner wall of the limiting groove 19, and the left clamping cylinder 5 and the left opening plate 6 are clamped by the end of the limiting groove 19, making them unable to separate under the action of an external force. This design not only doubles the installation efficiency of the cable body 14, but also eliminates the installation of fasteners such as bolts, saving time and effort.

[0030] Meanwhile, the first buffer pad 9 and the third buffer pad 13 of this device are respectively arranged one above the other on the upper and lower sides of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7. There is a metal sheet 11 movably clamped inside the clamping groove 10. When the left clamping cylinder 5 and the right clamping cylinder 7 are in an open state, the metal sheet 11 and the second buffer pad 12 are in a straight state. At this time, the cable body 14 bends the second buffer pad 12 and the second buffer pad 12 downward by its own weight and an external force, and squeezes the second buffer pad 12 to cause it to deform, increasing the contact area with the cable body 14. At the same time, the bending of the metal sheet 11 also enables the second buffer pad 12 to fit more closely to the lower surface of the cable body 14. As the left clamping cylinder 5 and the right clamping cylinder 7 are combined by rotation, the first buffer pad 9 at the top of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7 is attached downward and squeezes the upper surface of the cable body 14, thereby providing all-round buffer support for the cable body 14. Moreover, when the metal sheet 11 bends downward, on the one hand, its own resilience potential energy provides support for the cable body 14, and on the other hand, the third buffer pad 13 that abuts and supports the metal sheet 11 further provides elastic support for the cable body 14 by deforming after being pressed, so as to provide a shock absorption and buffering function for the cable body 14 after installation.

[0031] Finally, elastic variable size adaptation spaces are generated in the inner wall of the complete circular ring structure formed by the deformable and extrudable cushion one 9, cushion two 12, and cushion three 13. The left clamping cylinder 5 and the right clamping cylinder 7 form a complete circular ring structure with a size larger than the cable body 14. Inside this circular ring structure, metal sheets 11 are snap-connected to the middle parts of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7, and the cushion two 12 provides buffer support for the cable body 14. Moreover, the metal sheets 11 and the cushion two 12 are bent to provide adaptation support for the cable body 14. Then, the rotating left clamping cylinder 5 and right clamping cylinder 7 are rotated and combined into a complete circular ring. The cushion one 9 at the top of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7 provides all-round fixation and abutment adaptation for the upper surface of the cable body 14. The bending deformation degrees of the metal sheets 11 and the cushion two 12 can be flexibly changed according to the size of the cable body 14, thereby enhancing the applicability of the device. Embodiment 2

[0032] The left clamping cylinder 5 and the right clamping cylinder 7 are both in a semi-circular ring shape and can form a complete circular ring structure with each other. The left opening plate 6 and the right opening plate 8 are symmetrically distributed and open.

[0033] The left clamping cylinder 5 and the right clamping cylinder 7 designed in a semi-circular ring shape can form a complete circular ring after being combined, which is conducive to fixing the cable body 14. Embodiment 3

[0034] Buffer pads one 9 are fixedly connected to the tops of the inner ring surfaces of the left clamping cylinder 5 and the right clamping cylinder 7, and buffer pads three 13 are fixedly connected to the bottoms of the inner ring surfaces of the left clamping cylinder 5 and the right clamping cylinder 7. The buffer pads one 9 are pressed against the outer surface of the cable body 14 by extrusion, and the buffer pads three 13 are pressed against the outer side surface of the buffer pad two 12 by extrusion.

[0035] The buffer pads one 9 are respectively located at the tops of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7. When the left clamping cylinder 5 and the right clamping cylinder 7 are combined by rotation to complete the fixing action, the two groups of buffer pads one 9 are just located on the upper surface of the cable body 14 to provide a fixing function for the cable body 14. Embodiment 4

[0036] The limiting posts 3 are distributed in a "U" shape. There are two groups of limiting posts 3 that are symmetrically arranged front and back. A limiting ring 4 is fixedly installed in the middle of the outer surface of the limiting posts 3, and the limiting ring 4 is adaptively snap-connected to the middle of the inner wall of the installation groove 16.

[0037] Both the left clamping cylinder 5 and the right clamping cylinder 7 can slide around the outer surface of the limit post 3. To prevent the left clamping cylinder 5 from moving to one side of the right clamping cylinder 7 and the right clamping cylinder 7 from moving to one side of the left clamping cylinder 5, a limit ring 4 is installed in the middle of the outer surface of the limit post 3 to limit the movement paths of the limit post 3 and the limit ring 4. Embodiment 5

[0038] The limit ring 4 is used to limit the left clamping cylinder 5 from moving around the axis of the bracket 2 to the right side of the limit ring 4 and to limit the right clamping cylinder 7 from moving around the axis of the bracket 2 to the left side of the limit ring 4;

[0039] The limit ring 4 is just fitted and clamped in the middle of the inner wall of the installation groove 16 and cooperates to limit the movement paths of the left clamping cylinder 5 and the right clamping cylinder 7. Embodiment 6

[0040] When the left clamping cylinder 5 and the right clamping cylinder 7 are separated and at the maximum opening angle, the metal sheet 11 is distributed flatly;

[0041] When the left clamping cylinder 5 and the right clamping cylinder 7 are separated, the metal sheet 11 is straightened, thereby releasing the elastic tension of the metal sheet 11. This design enables the metal sheet 11 to be forced to bend when the cable body 14 presses down on the metal sheet 11. Embodiment 7

[0042] The metal rod 22 is obliquely and adaptively inserted into the fixing groove 18 and the limiting groove 19, and the axial cross-sectional shape of the metal rod 22 is "T" shaped;

[0043] The metal rod 22 is obliquely and adaptively inserted into the fixing groove 18 and the limiting groove 19 to clamp and fix the left clamping cylinder 5 and the left opening plate 6, realizing the snap-fixing function of the left clamping cylinder 5 and the left opening plate 6. Embodiment 8

[0044] The permanent magnet 20 is located at the top of the inner wall of the limiting groove 19 and maintains a minimum distance greater than zero from the top end of the metal rod 22;

[0045] The permanent magnet 20 can magnetically attract the metal rod 22 into the inner wall of the limiting groove 19, thereby clamping and fixing the left clamping cylinder 5 and the left opening plate 6.

[0046] Working principle: When the device is in use, installation stage:

[0047] Pull the fixed block 23 and pull the metal rod 22 obliquely downward so that the top end of the metal rod 22 disengages from the inner wall of the limit groove 19. At this time, place the cable body 14 directly on the upper surfaces of the left opening plate 6 and the right opening plate 8, and press downward to make the left opening plate 6 and the right opening plate 8 receive force, and drive the left clamping cylinder 5 and the right clamping cylinder 7 to rotate to both sides respectively, stretching the first spring 17 and generating elastic potential energy. When the cable body 14 can pass through the gap between the left clamping cylinder 5 and the right clamping cylinder 7, release the fixed block 23, and the cable body 14 continues to move downward and lands on the upper surface of the second buffer pad 12 and is pressed against it;

[0048] Then, the cable body 14 presses downward on the second buffer pad 12 and the metal sheet 11, causing the second buffer pad 12 to deform, and the metal sheet 11 bends downward to form an arc, and then randomly abuts against the third buffer pad 13, pressing the third buffer pad 13 to cause it to deform. At this time, the tops of the inner sides of the left clamping cylinder 5 and the right clamping cylinder 7 abut and combine, as Figure 3 、 Figure 4 shown. The first buffer pad 9 begins to cover the upper surface of the cable body 14, and the second buffer pad 12 located on the inner side of the metal sheet 11 covers the lower surface of the cable body 14. Then, since the left clamping cylinder 5 and the right clamping cylinder 7 combine into a complete circular ring structure, the fixed groove 18 and the limit groove 19 begin to combine and form a complete chamber. At this time, the metal rod 22 overcomes the tensile force from the second spring 21 under the magnetic attraction of the permanent magnet 20 and snaps upward into the limit groove 19, fixing the left clamping cylinder 5 and the right clamping cylinder 7 together and preventing them from separating, completing the installation and fixation of the cable body 14;

[0049] Disassembly stage: Hold the fixed block 23 and drive the metal rod 22 to move obliquely downward so that the top end of the metal rod 22 disengages from the inside of the limit groove 19. At this time, open the left clamping cylinder 5 and the right clamping cylinder 7, and lift the cable body 14 upward until the gap between the left clamping cylinder 5 and the right clamping cylinder 7 is large enough for the cable body 14 to pass through, and take out the cable body 14 to complete the disassembly. When the size of the cable body 14 becomes larger, the bending degree of the metal sheet 11 becomes larger, and it adapts in cooperation with the first buffer pad 9 and the third buffer pad 13. Moreover, the self-weight of the cable body 14 presses downward on the metal sheet 11 to pull the left clamping cylinder 5 and the right clamping cylinder 7 toward each other, making the combination of the left clamping cylinder 5 and the right clamping cylinder 7 tighter, and no fasteners such as bolts are required.

Claims

1. A power cable installation device, comprising a base (1), a bracket (2) and a limit column (3) being fixedly mounted on the top of the base (1), characterized in that: A left clamping cylinder (5) and a right clamping cylinder (7) are rotatably mounted on the outer surface of the bracket (2); the tops of the left clamping cylinder (5) and the right clamping cylinder (7) are respectively fixedly connected to a left open plate (6) and a right open plate (8); the top of the right clamping cylinder (7) is fixedly connected to the right open plate (8); a clamping groove (10) is provided in the middle of the inner wall of the left clamping cylinder (5) and the right clamping cylinder (7); a metal sheet (11) is movably clamped on the inner wall of the clamping groove (10); a buffer pad (12) is fixedly connected to the top of the metal sheet (11); a placement groove (15) and a mounting groove (12) are provided at the bottom of the inner side surface of the left clamping cylinder (5) and the right clamping cylinder (7). A mounting groove (16), wherein a spring 1 (17) is movably sleeved inside the placement groove (15), and the two ends of the spring 1 (17) are elastically connected to the left clamping tube (5) and the right clamping tube (7) respectively. A limiting groove (19) is provided at the top of the inner side surface of the left clamping tube (5), and a permanent magnet (20) is fixedly installed inside the limiting groove (19). A fixing groove (18) is provided at the top of the inner side surface of the right clamping tube (7), and a spring 2 (21) and a metal rod (22) are movably sleeved inside the fixing groove (18), and the outer end of the metal rod (22) passes through the outer side surface of the right clamping tube (7) and is fixedly connected to a fixing block (23).

2. A power cable installation device according to claim 1, characterized in that: The left clamping cylinder (5) and the right clamping cylinder (7) are both semicircular in shape and can form a complete circular ring structure with each other. The left opening plate (6) and the right opening plate (8) are symmetrically opened and distributed. The inner walls of the left clamping cylinder (5) and the left opening plate (6) are clamped with a cable body (14) through a metal sheet (11) and a second buffer pad (12). The two ends of the second spring (21) are elastically connected to the metal rod (22) and the fixing groove (18) respectively.

3. A power cable installation device according to claim 2, characterized in that: The top of the inner ring surface of the left clamping cylinder (5) and the right clamping cylinder (7) are fixedly connected with a buffer pad one (9), and the bottom of the inner ring surface of the left clamping cylinder (5) and the right clamping cylinder (7) are fixedly connected with a buffer pad three (13). The buffer pad one (9) is pressed against the outer surface of the cable body (14), and the buffer pad three (13) is pressed against the outer side surface of the buffer pad two (12).

4. A power cable installation device according to claim 3, characterized in that: The limiting columns (3) are distributed in a "U" shape. The limiting columns (3) are arranged in two groups that are symmetrical in front and back. A limiting ring (4) is fixedly installed in the middle of the outer surface of the limiting column (3). The limiting ring (4) is adapted to be clamped in the middle of the inner wall of the installation groove (16).

5. A power cable installation device according to claim 4, characterized in that: The limiting ring (4) is used to limit the movement of the left clamping cylinder (5) around the axis of the bracket (2) to the right side of the limiting ring (4), and to limit the movement of the right clamping cylinder (7) around the axis of the bracket (2) to the left side of the limiting ring (4).

6. A power cable installation device according to claim 5, characterized in that: When the left clamping cylinder (5) and the right clamping cylinder (7) are separated and at a maximum opening and closing angle, the metal sheet (11) is distributed in a straight line.

7. A power cable installation device according to claim 6, characterized in that: The metal rod (22) is inserted into the fixing groove (18) and the limiting groove (19) in an inclined manner, and the axial cross-section of the metal rod (22) is in a "T" shape.

8. A power cable installation device according to claim 7, characterized in that: The permanent magnet (20) is located at the top of the inner wall of the limiting groove (19) and maintains a minimum spacing greater than zero with the top end of the metal rod (22); the inner end of the metal rod (22) is adapted to be snap-fitted into the limiting groove (19) and has a magnetic attraction interaction with the permanent magnet (20).

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