Power cable installation device

Abstract

The invention discloses a power cable mounting device which comprises a base, a support and a limiting column are fixedly mounted at the top of the base, a left clamping cylinder and a right clamping cylinder are rotatably mounted on the outer surface of the support, and a left opening plate and a right opening plate are fixedly connected to the top of the left clamping cylinder and the top of the right clamping cylinder respectively. And clamping grooves are formed in the middles of the inner walls of the left clamping cylinder and the right clamping cylinder correspondingly, and metal sheets are movably connected to the inner walls of the clamping grooves in a clamped mode. According to the device, the permanent magnets located in the limiting grooves generate magnetic attraction force on the metal rods to suck the metal rods upwards into the inner walls of the limiting grooves, the left clamping cylinder and the left opening plate are clamped through the ends of the limiting grooves, the left clamping cylinder and the left opening plate cannot be separated under the action of external force, and through the design, the installation efficiency of the cable body is multiplied; and installation of fastening pieces such as bolts is omitted, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the technical field of power cable installation, and in particular to a power cable installation device. Background Art

[0002] A power cable is usually formed by twisting a number of conductors, which is similar to a rope. Each group of conductors is insulated from each other and twisted around a center. The entire outer surface is wrapped with a highly insulating covering layer, so that it can be energized and can realize the function of power transportation over a long distance. The installation device of the power cable usually provides support and fixation for the cable. Its form is usually mainly semicircular metal parts that clamp each other. Two groups of semicircular metal rings fit each other on the surface of the cable and are fixed by bolts to achieve the clamping of the cable. However, the widely used form of separate distribution and bolt fixing 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 aggravate the wear between the semicircular metal parts. Although rubber pads are used in the prior art, it will cause loose fit and small contact area when facing power cables of different sizes, resulting in excess wear. Therefore, this device designs a power cable installation device to overcome the above-mentioned defects. Summary of the invention

[0003] The present 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 cumbersome bolt installation of cables in the prior art and the wear problem caused by the inadequate adaptation of different sizes.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an electric power cable installation device, comprising a base, a bracket and a limit column are fixedly installed on the top of the base, a left clamping cylinder and a right clamping cylinder are rotatably installed on the outer surface of the bracket, the tops of the left clamping cylinder and the right clamping cylinder are respectively fixedly connected with a left open plate and a right open plate, a card groove is opened in the middle part of the inner wall of the left clamping cylinder and the right clamping cylinder, a metal sheet is movably clamped on the inner wall of the card groove, a buffer pad 2 is fixedly connected to the top of the metal sheet, a cable body is placed on the inner wall of the left clamping cylinder and the left open plate through the metal sheet and the buffer pad 2, and the bottom of the inner side surface of the left clamping cylinder and the right clamping cylinder Both are provided with a placement groove and an installation groove, the placement groove has a spring 1 movably sleeved inside, the two ends of the spring 1 are elastically connected to the left clamping tube and the right clamping tube respectively, a limiting groove is provided at the top of the inner side surface of the left clamping tube, a permanent magnet is fixedly installed inside the limiting groove, the top of the inner side surface of the right clamping tube is provided with a fixing groove, the fixing groove has a spring 2 and a metal rod movably sleeved inside the fixing groove, the two ends of the spring 2 are elastically connected to the metal rod and the fixing groove respectively, the outer end of the metal rod passes through the outer side surface of the right clamping tube and is fixedly connected to a fixing block, the inner end of the metal rod is adapted to be clamped in the limiting groove and has mutual magnetic attraction with the permanent magnet.

[0005] Furthermore, the left clamping tube and the right clamping tube are both in the shape of a semicircular ring and can form a complete circular ring structure with each other, and the left opening plate and the right opening plate are symmetrically opened and distributed.

[0006] Furthermore, the top of the inner ring surface of the left clamping cylinder and the right clamping cylinder are fixedly connected with a buffer pad one, and the bottom of the inner ring surface of the left clamping cylinder and the right clamping cylinder are fixedly connected with a buffer pad three. The buffer pad one is pressed against the outer surface of the cable body, and the buffer pad three is pressed against the outer side surface of the buffer pad two.

[0007] Furthermore, the limiting columns are distributed in a "U" shape, and the limiting columns are arranged in two groups that are symmetrical front and back. A limiting ring is fixedly installed in the middle of the outer surface of the limiting column, and the limiting ring is adapted to be clamped in the middle of the inner wall of the installation groove.

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

[0009] Furthermore, when the left clamping tube and the right clamping tube are separated and at the maximum opening and closing angle, the metal sheet is distributed in a straight line.

[0010] Furthermore, the metal rod is inserted into the fixing groove and the limiting groove in an inclined manner, and the axial cross-section of the metal rod is in a "T" shape.

[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 with the top end of the metal rod.

[0012] The present application provides a power cable installation device, which has the following effects: 1. This device has been redesigned to change the way the cable body is fixed. The cable body is efficiently installed by combining a buckle design with a buffer wrapping method. A bracket is provided, and a left clamping cylinder and a right clamping cylinder are rotatably installed on the outer surface. When the left clamping cylinder and the right clamping cylinder are abutted and symmetrically distributed, they can form a complete circular ring structure. The two are elastically connected by a spring. When the cable body enters the gap between the left clamping cylinder and the right clamping cylinder downward, the buffer pad 2 and the metal are pressed. The sheet pulls the left clamping cylinder and the right clamping cylinder toward one side of the axis of the cable body, so that the left clamping cylinder and the right clamping cylinder can be automatically combined. When the left clamping cylinder and the right clamping cylinder abut against each other and combine, the permanent magnet located inside the limiting groove generates a magnetic attraction on the metal rod, which sucks the metal rod upward into the inner wall of the limiting groove, and clamps the left clamping cylinder and the left opening plate through 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.

[0013] 2. At the same time, the device also arranges buffer pad 1 and buffer pad 3 on the upper and lower sides of the inner walls of the left clamping cylinder and the right clamping cylinder, respectively, and a metal sheet is movably clamped in the internal clamping groove. When the left clamping cylinder and the right clamping cylinder are in an open state, the metal sheet and buffer pad 2 are straight devices. At this time, the cable body uses its own weight and external force to bend buffer pad 2 and buffer pad 2 downward, and squeeze buffer pad 2 to deform it, thereby increasing the contact area with the cable body. At the same time, the bending of the metal sheet also enables buffer pad 2 to fit the lower surface of the cable body more closely. As the left clamping cylinder and the right clamping cylinder are combined through rotation, buffer pad 1 located on the top of the inner wall of the left clamping cylinder and the right clamping cylinder fits downward and squeezes the upper surface of the cable body, thereby providing all-round buffer support for the cable body. When the metal sheet bends downward, on the one hand, its own rebound potential energy provides support for the cable body. On the other hand, buffer pad 3 used to abut the supporting metal sheet further provides elastic support for the cable body by being deformed after being pressed, thereby providing shock-absorbing and buffering function for the cable body after installation.

[0014] 3. Finally, the deformable and extrudable buffer pads 1, 2 and 3 are used to generate an elastically variable size adaptation space in the inner wall of the complete circular ring structure formed by the left clamping cylinder and the right clamping cylinder. The left clamping cylinder and the right clamping cylinder form a complete circular ring structure whose size is larger than the cable body. Inside the circular ring structure, a metal sheet is clamped in the middle of the inner wall of the left clamping cylinder and the right clamping cylinder, and the buffer pad 2 is used to provide a buffer support for the cable body. The metal sheet and the buffer pad 2 are bent to provide an adaptation support for the cable body. Then, the rotating left clamping cylinder and the right clamping cylinder are rotated to form a complete circular ring. The buffer pad 1 on the top of the inner wall 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 sheet and the buffer pad 2 can be flexibly changed according to the size of the cable body, thereby enhancing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0016] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the separation of the overall structure of the present invention; Figure 2 It is a front perspective schematic diagram of the overall structure of the present invention; Figure 3 It is a front cutaway schematic diagram of the overall structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at center A; Figure 5 It is a front cutaway schematic diagram of the installation slot of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 It is a top view cutaway schematic diagram of the overall structure of the present invention; Figure 8 It is a schematic diagram of the front appearance of the overall structure of the present invention.

[0017] Wherein: 1. base; 2. bracket; 3. limit column; 4. limit ring; 5. left clamping cylinder; 6. left opening plate; 7. right clamping cylinder; 8. right opening plate; 9. buffer pad 1; 10. slot; 11. metal sheet; 12. buffer pad 2; 13. buffer pad 3; 14. cable body; 15. placement slot; 16. installation slot; 17. spring 1; 18. fixing slot; 19. limit slot; 20. permanent magnet; 21. spring 2; 22. metal rod; 23. fixing block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example 1

[0019] See also Figure 1-Figure 8 The present invention discloses a power cable installation device, comprising a base 1, a bracket 2 and a limiting column 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 fixedly connected to the top of the left clamping cylinder 5 and the right clamping cylinder 7 respectively, a clamping groove 10 is opened 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 on the top of the metal sheet 11, a cable body 14 is clamped and placed on the inner wall of the left clamping cylinder 5 and the left opening plate 6 through the metal sheet 11 and the buffer pad 12, and a placement groove 15 and a placement groove 15 are opened at the bottom of the inner side surface of the left clamping cylinder 5 and the right clamping cylinder 7 The mounting groove 16, the placement groove 15 is internally movably sleeved with a spring 17, the two ends of the spring 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 of the left clamping tube 5, 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 of the right clamping tube 7, a spring 21 and a metal rod 22 are movably sleeved inside the fixing groove 18, the two ends of the spring 21 are elastically connected to the metal rod 22 and the fixing groove 18 respectively, the outer end of the metal rod 22 passes through the outer side of the right clamping tube 7 and is fixedly connected with a fixing block 23, the inner end of the metal rod 22 is adapted to be clamped in the limiting groove 19, and has a mutual magnetic attraction with the permanent magnet 20; The device has been redesigned to change the way of fixing the cable body 14, and adopts a combination of a buckle design and a buffer wrapping method to efficiently install the cable body 14. A bracket 2 is provided, and a left clamping cylinder 5 and a right clamping cylinder 7 are rotatably installed on the outer surface thereof. When the left clamping cylinder 5 and the right clamping cylinder 7 are abutted and symmetrically distributed, they can form a complete circular ring structure, and the two are elastically connected by a spring 17. When the cable body 14 enters the gap between the left clamping cylinder 5 and the right clamping cylinder 7 downward, the left clamping cylinder 5 and the right clamping cylinder 7 are pressed by pressing the buffer pad 12 and the metal sheet 11. The clamping cylinder 5 and the right clamping cylinder 7 are pulled toward one side of the axis of the cable body 14, so that the left clamping cylinder 5 and the right clamping cylinder 7 can be automatically combined. When the left clamping cylinder 5 and the right clamping cylinder 7 abut against each other and combine, the permanent magnet 20 located inside the limiting groove 19 generates a magnetic attraction on the metal rod 22, which sucks the metal rod 22 upward into the inner wall of the limiting groove 19, and clamps the left clamping cylinder 5 and the left opening plate 6 through the end of the limiting groove 19, so that they cannot be separated under the action of 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.

[0020] At the same time, the device also arranges the buffer pad 1 9 and the buffer pad 3 13 one above and one below on the upper and lower sides of the inner wall of the left clamping tube 5 and the right clamping tube 7, respectively, and the metal sheet 11 is movably clamped in the internal clamping groove 10. When the left clamping tube 5 and the right clamping tube 7 are in an open state, the metal sheet 11 and the buffer pad 2 12 are straight devices. At this time, the cable body 14 uses its own weight and external force to bend the buffer pad 2 12 and the buffer pad 2 12 downward, and squeezes the buffer pad 2 12 to deform it, thereby increasing the contact area with the cable body 14. At the same time, the bending of the metal sheet 11 also enables the buffer pad 2 12 to fit the cable body more closely. The lower surface of the cable body 14 is formed by the left clamping cylinder 5 and the right clamping cylinder 7 being combined by rotation, the buffer pad 9 located on the top of the inner wall of the left clamping cylinder 5 and the right clamping cylinder 7 adheres downward and squeezes the upper surface of the cable body 14, thereby providing all-round buffer support for the cable body 14, and when the metal sheet 11 bends downward, on the one hand, its own rebound potential energy provides support for the cable body 14, and on the other hand, the buffer pad 3 13 used to abut against the supporting metal sheet 11 is deformed after being pressed to further provide elastic support for the cable body 14, thereby providing a shock-absorbing and buffering function for the cable body 14 after installation.

[0021] Finally, an elastically variable size adaptation space is generated in the inner wall of the complete circular structure formed by the left clamping tube 5 and the right clamping tube 7 by using the deformable and extrudable buffer pad 1 9, buffer pad 2 12 and buffer pad 3 13. The left clamping tube 5 and the right clamping tube 7 form a complete circular structure whose size is larger than the cable body 14. Inside the circular structure, a metal sheet 11 is clamped in the middle of the inner wall of the left clamping tube 5 and the right clamping tube 7, and the buffer pad 2 12 is used to provide a buffer support for the cable body 14. The metal sheet 11 and the buffer pad 2 12 are bent to provide an adaptation support for the cable body 14. Then, the rotating left clamping tube 5 and the right clamping tube 7 are rotated to form a complete circular ring. The buffer pad 1 9 on the top of the inner wall of the left clamping tube 5 and the right clamping tube 7 provides all-round fixation and abutment adaptation for the upper surface of the cable body 14, and the degree of bending deformation of the metal sheet 11 and the buffer pad 2 12 can be flexibly changed according to the size of the cable body 14, thereby enhancing the applicability of the device. Example 2

[0022] The left clamping cylinder 5 and the right clamping cylinder 7 are both in the shape of a semicircular ring 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 left clamping tube 5 and the right clamping tube 7 of semicircular ring design can form a complete ring after being combined, so as to facilitate fixing the cable body 14. Example 3

[0023] The top of the inner annular surface of the left clamping cylinder 5 and the right clamping cylinder 7 are fixedly connected with a buffer pad 1 9, and the bottom of the inner annular surface of the left clamping cylinder 5 and the right clamping cylinder 7 are fixedly connected with a buffer pad 3 13. The buffer pad 1 9 is pressed against the outer surface of the cable body 14, and the buffer pad 3 13 is pressed against the outer side surface of the buffer pad 2 12; The buffer pads 9 are respectively located at the top of the inner walls of the left clamping cylinder 5 and the right clamping cylinder 7. After 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 9 are just located on the upper surface of the cable body 14, providing a fixing function for the cable body 14. Example 4

[0024] The limiting columns 3 are distributed in a "U" shape, and the limiting columns 3 are arranged in two groups that are symmetrical in front and back. The limiting ring 4 is fixedly installed in the middle of the outer surface of the limiting column 3, and the limiting ring 4 is adapted to be clamped in the middle of the inner wall of the installation groove 16; Both the left clamping cylinder 5 and the right clamping cylinder 7 can slide around the outer surface of the limit column 3. In order to prevent the left clamping cylinder 5 from moving to the side of the right clamping cylinder 7 and the right clamping cylinder 7 from moving to the side of the left clamping cylinder 5, a limit ring 4 is installed in the middle of the outer surface of the limit column 3 to limit the movement path of the limit column 3 and the limit ring 4. Example 5

[0025] The limiting ring 4 is used to limit the left clamping cylinder 5 from moving to the right side of the limiting ring 4 around the axis of the bracket 2, and to limit the right clamping cylinder 7 from moving to the left side of the limiting ring 4 around the axis of the bracket 2; The limiting ring 4 is just adapted to be clamped in the middle of the inner wall of the installation groove 16 , and cooperates to limit the movement path of the left clamping cylinder 5 and the right clamping cylinder 7 . Example 6

[0026] When the left clamping tube 5 and the right clamping tube 7 are separated and at the maximum opening angle, the metal sheet 11 is distributed in a straight line; 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 bend when the cable body 14 presses the metal sheet 11 downward. Example 7

[0027] The metal rod 22 is obliquely adapted to be inserted into the fixing groove 18 and the limiting groove 19, and the axial cross-section of the metal rod 22 is in a "T" shape; The metal rod 22 is inserted into the fixing groove 18 and the limiting groove 19 by being obliquely adapted to clamp and fix the left clamping cylinder 5 and the left opening plate 6, thereby realizing the buckle fixing function of the left clamping cylinder 5 and the left opening plate 6. Example 8

[0028] 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 of the metal rod 22; 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.

[0029] Working principle: When the device is in use, during the installation phase: Pull the fixing block 23 and pull the metal rod 22 obliquely downward to make the top of the metal rod 22 separate from the inner wall of the limiting groove 19. At this time, place the cable body 14 directly on the upper surface 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 bear force, and respectively drive the left clamping cylinder 5 and the right clamping cylinder 7 to rotate to both sides, stretch the spring 17 and generate 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 fixing block 23, and the cable body 14 continues to move downward and falls on the upper surface of the buffer pad 2 12 to be squeezed therewith. Then, the cable body 14 presses the buffer pad 2 12 and the metal sheet 11 downward, causing the buffer pad 2 12 to deform. The metal sheet 11 bends downward to form an arc and randomly abuts against the buffer pad 3 13, squeezing the buffer pad 3 13 to deform it. At this time, the top of the inner side of the left clamping cylinder 5 and the inner side of the right clamping cylinder 7 abut and combine. Figure 3 , Figure 4As shown, the buffer pad 1 9 begins to cover the upper surface of the cable body 14, and the buffer pad 2 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 are combined into a complete annular structure, the fixing groove 18 and the limiting groove 19 begin to combine and form a complete chamber. At this time, the metal rod 22 overcomes the tensile force from the spring 2 21 under the magnetic attraction of the permanent magnet 20, and is inserted upward into the limiting groove 19, so that the left clamping cylinder 5 and the right clamping cylinder 7 are fixed and cannot be separated, and the installation and fixation of the cable body 14 is completed; Disassembly stage: press the fixing block 23 and drive the metal rod 22 to move obliquely downward so that the top end of the metal rod 22 is out of the limit groove 19. At this time, open the left clamping tube 5 and the right clamping tube 7, and lift the cable body 14 upward until the gap between the left clamping tube 5 and the right clamping tube 7 is large enough for the cable body 14 to pass through. Take out the cable body 14 and 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 is adapted to the buffer pad 1 9 and the buffer pad 3 13. The dead weight of the cable body 14 presses the metal sheet 11 downward, pulls the left clamping tube 5 and the right clamping tube 7 toward each other, and makes the left clamping tube 5 and the right clamping tube 7 more tightly combined without the need for fasteners such as bolts.

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).

Images