A power cable support structure that facilitates height adjustment and cable pull

Abstract

The utility model provides a power cable support structure of convenient height adjustment and cable pulling, belongs to power cable construction equipment technical field, is used for supporting and pulling cable to power cable, its technical scheme is: cable support post is placed on the bottom plate, four inclined bracing columns are fixedly connected with the bottom plate to the cable support post, the lower end of telescopic frame is inserted in the inner hole of cable support post, the lower part of telescopic frame is fixed with rack along the length direction, the rod body of rocker passes through the through -hole on the outer wall of cable support post, the front end of rocker is fixedly connected with gear, gear is engaged with the rack of telescopic frame lower part, one end of two cable plates is vertically inserted in the insertion hole of telescopic frame upper end, and the surface of the surface of two cable plates is sequentially fixed with a plurality of cable rings along the length direction, and the cable is worn in the cable ring. The utility model can adjust the height of supporting cable when using, adapts the need of construction of different height, and simultaneously facilitates cable to pull, prevents the damage of cable in the process of pulling.

Description

Technical Field

[0001] This utility model relates to a support structure for supporting and pulling power cables during installation and maintenance, belonging to the technical field of power cable construction equipment. Background Technology

[0002] Cables, as transmission lines in power engineering systems, are used to transmit electrical energy generated by power plants, substations, or distribution stations to users in different locations for power consumption. In addition, cables are also used to transmit signals such as images and data, such as telephone cables and network cables, and are widely used in communication systems, computer networks, and other fields. During power construction, the installation and maintenance of power cables require support to facilitate smoother construction.

[0003] Chinese Patent Publication No. CN215009365U discloses a cable support structure for electrical engineering. This cable support structure includes a base plate with multiple limiting members installed on it. A locking portion is formed between any two adjacent limiting members. Multiple cable grooves are recessed into the base plate corresponding to the locking portions, penetrating the front and rear walls of the base plate. A locking portion is formed between two limiting blocks located above the same cable groove. This cable support structure is novel and facilitates cable clamping and installation, making it convenient to use. However, this cable support has some drawbacks. First, the cable height cannot be easily adjusted, affecting construction. Second, although the cable can be fixed and clamped, the cable surface will contact the ground, causing friction when the cable is pulled, resulting in wear on the cable sheath. Therefore, it is essential to design a power cable support structure that allows for easy adjustment of cable height and cable pulling to facilitate cable construction. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a power cable support structure that is easy to adjust in height and pull out. When using this cable support structure, the height of the supported cable can be adjusted to meet the needs of construction at different heights. At the same time, when supporting the cable, it is easy to pull out the cable and prevent the cable from being damaged during the pulling process.

[0005] The technical solution to the above technical problem is:

[0006] A power cable support structure for easy height adjustment and cable retraction includes a base plate, diagonal braces, cable support posts, a telescopic frame, a rack, a gear, a rocker arm, positioning bolts, a cable plate, and a cable ring. The cable support post is cylindrical, with its lower end resting on the upper surface of the base plate. Four diagonal braces surround the cable support post, fixing it to the base plate. The telescopic frame is cylindrical, with its lower end inserted into the inner hole of the cable support post. A rack is fixed along the length of the lower part of the telescopic frame. A vertical rocker arm fixing plate is welded to the side wall of the inner hole of the cable support post, with a circular hole on the rocker arm fixing plate. A through hole on the outer wall of the cable support post aligns with the circular hole on the rocker arm fixing plate. The rod passes through the through hole on the outer wall of the cable support and the round hole of the rocker arm fixing plate. The front end of the rocker arm is fixedly connected to the gear, which meshes with the rack at the bottom of the telescopic frame. The rear end of the rocker arm is L-shaped on the outside of the cable support. There is a positioning screw hole on the upper outer wall of the cable support. The positioning bolt is screwed into the positioning screw hole. The front end of the positioning bolt is tightly connected to the outer circumference of the telescopic frame inside the cable support. The cable plate is an L-shaped plate. One end of the two cable plates is vertically inserted into the insertion hole at the top of the telescopic frame. The other ends of the two cable plates are placed horizontally opposite each other on a straight line. Multiple cable rings are fixedly arranged sequentially along the length direction on the upper surface of the two cable plates. The cable is threaded through the cable rings.

[0007] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, has a square base plate with two casters fixedly installed on its bottom surface. The two casters are located on opposite sides of the bottom surface of the base plate and are parallel to each other.

[0008] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, has four horizontal support fixing plates evenly welded around the circumference of the cable support column. Each support fixing plate has a connecting hole in its center. The lower ends of the four diagonal support columns are welded to the upper surface of the base plate, and the upper ends of the four diagonal support columns are welded to connecting screws. The four connecting screws pass through the connecting holes of the four support fixing plates around the circumference of the cable support column, and the upper ends of the four connecting screws are fixedly connected to the four support fixing plates by fixing nuts.

[0009] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, has a support retainer ring on the upper end face of the cable support post. The support retainer ring has multiple round holes evenly distributed around its circumference. The upper end face of the cable support post has multiple threaded holes that correspond to the multiple round holes of the support retainer ring. Fixing bolts are used to fix the support retainer ring to the upper end of the cable support post through the round holes of the support retainer ring and the threaded holes at the upper end of the cable support post.

[0010] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, includes a cable support frame on top of the cable post. The cable support frame is cylindrical, and its lower end is welded to the inner hole of the post retainer. The lower end of the cable support frame is fixedly connected to the upper end face of the cable post via the post retainer. A fixing ring is located above the upper end face of the cable support frame, with multiple circular holes evenly distributed around its circumference. The upper end face of the cable support frame has multiple threaded holes that correspond to the multiple circular holes of the fixing ring. Fixing bolts secure the fixing ring to the upper end of the cable support frame via the circular holes of the fixing ring and the threaded holes at the upper end of the cable support frame. The lower part of the telescopic frame extends into the inner cavity of the cable support frame and the cable post through the inner hole of the fixing ring, and the telescopic frame and the inner hole of the fixing ring are in a sliding fit.

[0011] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, has a support ring on the upper surface of the telescopic frame. The support ring has a square insertion hole in its center, and the lower ends of two cable plates are inserted parallel to each other into the insertion hole. A reinforcing ring is welded to the outer periphery of the middle part of the telescopic frame. Between the support ring and the reinforcing ring, there are multiple support rods that encircle the cylindrical body of the telescopic frame. The two ends of the support rods are welded to the support ring and the reinforcing ring, respectively. There are inclined support frames on opposite sides of the reinforcing ring. The lower ends of the two inclined support frames are welded to the reinforcing ring, and the upper ends of the two inclined support frames are welded to the outer bottom surfaces of the two cable plates, respectively.

[0012] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, comprises a cable ring consisting of a fixed frame, clamping nuts, an outer ring, an inner clamping ring, and a shrinking ring. The fixed frame is n-shaped, with both ends welded to the upper surface of the cable plate. The upper part of the outer ring is movably connected to the lower surface of the fixed frame. The two clamping nuts are threaded to both ends of the outer ring. The inner clamping ring is located within the outer ring, and the shrinking ring is clamped in the gap between the outer ring and the inner clamping ring.

[0013] The aforementioned power cable support structure, which facilitates height adjustment and cable retraction, features an inner clamping ring made of elastic material. The diameter of the inner clamping ring matches the diameter of the cable in the supported state. The contraction ring consists of multiple arc-shaped pieces, one end of which is welded around the inner wall of the outer ring, and the other end of which is in contact with the circumferential wall of the inner clamping ring. The arcs of the multiple arc-shaped pieces of the contraction ring are bent in the same direction.

[0014] The beneficial effects of this utility model are:

[0015] The base plate of this invention can be moved to the position where the cable needs to be supported by the casters; the four diagonal bracing columns are fixed to the upper surface of the base plate by fixing plates, connecting screws and fixing nuts respectively; the lower part of the telescopic frame can slide along the inner hole of the cable support, and the gear and rocker installed in the cable support can drive the telescopic frame to move up and down by the rack fixed at the lower part of the telescopic frame, so as to adjust the height of the telescopic frame; the cable plate installed at the upper end of the telescopic frame has multiple cable rings evenly distributed, which can support the cable; the inner clamping ring of the cable ring can change its diameter under the action of the contraction ring, so as to clamp and loosen the cable, ensuring the clamping force of the cable and facilitating the release of the cable.

[0016] This utility model has a reasonable structure and is easy to use. The height of the support cable can be adjusted during use to meet the needs of construction at different heights. At the same time, it facilitates the pulling of the cable while supporting it, preventing damage to the cable during the pulling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the connection between the base plate and the cable support;

[0019] Figure 3 This is a schematic diagram showing the connection between the cable support and the telescopic frame;

[0020] Figure 4 This is a structural diagram of a rack, pinion, and rocker arm;

[0021] Figure 5 This is a schematic diagram of the cable ring structure.

[0022] The following are the markings in the diagram: Base plate 1, Diagonal brace column 2, Cable support column 3, Cable rack 4, Telescopic frame 5, Rack 6, Gear 7, Rocker arm 8, Positioning bolt 9, Cable plate 10, Cable ring 11, Moving wheel 12, Support column fixing plate 13, Connecting screw 14, Fixing nut 15, Support column retaining ring 16, Fixing ring 17, Rocker arm fixing plate 18, Support ring 19, Insertion hole 20, Reinforcing ring 21, Support rod 22, Diagonal support frame 23, Fixing frame 24, Clamping nut 25, Outer ring 26, Inner clamping ring 27, Contraction ring 28. Detailed Implementation

[0023] This utility model consists of a base plate 1, a diagonal support column 2, a cable support column 3, a cable rack 4, a telescopic frame 5, a cable plate 10, and a cable ring 11.

[0024] Figure 1 , 2The display shows that the base plate 1 is a square plate, and two casters 12 are fixedly installed on the bottom surface of the base plate 1. The two casters 12 are located on opposite sides of the bottom surface of the base plate 1 and are parallel to each other. The base plate 1 can be moved to the position where the cable needs to be supported by the casters 12.

[0025] Figure 1 , 2 The cable support post 3 is cylindrical, with its lower end located on the upper surface of the base plate 1 without a fixed connection. The cable support post 3 is fixed to the base plate 1 via diagonal bracing posts 2. The installation structure consists of four horizontal support mounting plates 13 evenly welded around the circumference of the cable support post 3. Each support mounting plate 13 has a connecting hole in its center. The lower ends of the four diagonal bracing posts 2 are welded to the upper surface of the base plate 1, and the upper ends of the four diagonal bracing posts 2 are welded to connecting screws 14. These screws 14 pass through the connecting holes in the four support mounting plates 13 around the circumference of the cable support post 3, and their upper ends are fixed to the four support mounting plates 13 by fixing nuts 15. This connection method allows for convenient disassembly and maintenance of the cable support post 3.

[0026] Figure 1 , 3 As shown, the components for adjusting cable height according to this utility model include a cable support post 3, a cable rack 4, and a telescopic frame 5. The cable support post 3, cable rack 4, and telescopic frame 5 are connected in sequence, and the telescopic frame 6 can move up and down to adjust the cable height.

[0027] Figure 1 , 3 As shown, there is a support retainer 16 on the upper surface of the cable support 3. The support retainer 16 has multiple round holes evenly distributed around its circumference. The upper surface of the cable support 3 has multiple threaded holes that correspond to the multiple round holes of the support retainer 16. The fixing bolts fix the support retainer 16 to the upper end of the cable support 3 through the round holes of the support retainer 16 and the threaded holes at the upper end of the cable support 3.

[0028] Figure 1 , 3 The cable support 3 has a cable rack 4 above it. The cable rack 4 is cylindrical, and its lower end is welded to the support ring 16. The lower end of the cable rack 4 is fixedly connected to the upper end face of the cable support 3 via the support ring 16. A fixing ring 17 is located above the upper end face of the cable rack 4. Multiple circular holes are evenly distributed around the circumference of the fixing ring 17. Multiple threaded holes on the upper end face of the cable rack 4 correspond to the circular holes of the fixing ring 17. Fixing bolts are used to fix the fixing ring 17 to the upper end of the cable rack 4 through the circular holes of the fixing ring 17 and the threaded holes on the upper end of the cable rack 4. The lower part of the telescopic frame 5 extends into the inner cavity of the cable rack 4 and the cable support 3 through the inner hole of the fixing ring 17. The telescopic frame 5 and the inner hole of the fixing ring 17 are in a sliding fit.

[0029] Figure 1, 4 The cable support 3 is driven by a rack 6, a gear 7, and a rocker arm 8 to move the telescopic frame 5 up and down, thereby adjusting the cable height. Specifically, the telescopic frame 5 is cylindrical. Its lower end is inserted into the inner hole of the cable support 3 via a cable holder 4. A rack 6 is fixed along the length of the lower part of the telescopic frame 5. A vertical rocker arm fixing plate 18 is welded to the side wall of the inner hole of the cable support 3. The rocker arm fixing plate 18 has a circular hole. A through hole on the outer wall of the cable support 3 corresponds to the circular hole in the rocker arm fixing plate 18. The rocker arm 8 passes through the through hole on the outer wall of the cable support 3 and the circular hole in the rocker arm fixing plate 18. The front end of the rocker arm 8 is fixedly connected to the gear 7, which meshes with the rack 6 at the bottom of the telescopic frame 5. The rear end of the rocker arm 8 is L-shaped outside the cable support 3. Rotating the rocker arm 8 causes the gear 7 to move the rack 6 on the telescopic frame 5, thus moving the telescopic frame 5 up and down, adjusting its height. The upper outer wall of the cable support post 3 has a positioning screw hole. The positioning bolt 9 is screwed into the positioning screw hole. The front end of the positioning bolt 9 is tightly connected to the outer circumference of the telescopic frame 5 inside the cable support post 3, so that the position of the telescopic frame 5 after height adjustment is fixed.

[0030] Figure 1 , 3 The telescopic frame 5 has a support ring 19, a reinforcing ring 21, and support rods 22 on its upper part to enhance its strength. The support ring 19 is welded to the upper end face of the telescopic frame 5, and the reinforcing ring 21 is welded to the outer periphery of the middle part of the telescopic frame 5. Between the support ring 19 and the reinforcing ring 21, there are multiple support rods 22 that surround the cylindrical body of the telescopic frame 5. The two ends of the multiple support rods 22 are welded to the support ring 19 and the reinforcing ring 21, respectively.

[0031] Figure 1 , 3 The present invention includes cable clamping and pulling components comprising cable plates 10 and cable rings 11. The cable plates 10 are L-shaped. A square insertion hole 20 is located in the center of the support ring 19 at the upper end of the telescopic frame 5. One end of each L-shaped cable plate 10 is vertically inserted into the insertion hole 20 of the support ring 19 at the upper end of the telescopic frame 5, while the other ends of the two cable plates 10 are placed horizontally opposite each other in a straight line. Diagonal support frames 23 are located on opposite sides of the reinforcing ring 21 of the telescopic frame 5. The lower ends of the two diagonal support frames 23 are welded to the reinforcing ring 21, and the upper ends of the two diagonal support frames 23 are welded to the outer bottom surfaces of the two cable plates 10. The diagonal support frames 23 support both ends of the cable plates 10, ensuring that the cable plates 10 are in a horizontal position and do not tilt downwards. Multiple cable rings 11 are sequentially arranged along the length of the upper surface of the two cable plates 10, and the cables are threaded through the cable rings 11.

[0032] Figure 1 , 5The cable ring 11 is shown to consist of a fixing frame 24, clamping nuts 25, an outer ring 26, an inner clamping ring 27, and a shrink ring 28. The fixing frame 24 is n-shaped, and its two ends are welded to the upper surface of the cable plate 10. The upper surface of the outer ring 26 is movably connected to the lower surface of the fixing frame 24. The two clamping nuts 25 are threaded to the two ends of the outer ring 26. The fixing frame 24 is sleeved on the outside of the outer ring 26, and the position of the outer ring 26 is fixed by the two clamping nuts 25. The inner clamping ring 27 is located in the outer ring 26, and the shrink ring 28 is clamped in the gap between the outer ring 26 and the inner clamping ring 27.

[0033] Figure 1 , 5 The inner clamping ring 27 is a flexible circular ring, and its diameter matches the cable diameter in the supported state. The contraction ring 28 consists of multiple arc-shaped pieces. One end of each arc-shaped piece is welded around the inner wall of the outer ring 26, and the other end of each arc-shaped piece contacts the circumferential wall of the inner clamping ring 27. The arcs of the multiple arc-shaped pieces in the contraction ring 28 all have the same curvature direction. Under normal support, the inner clamping ring 27 elastically holds the cable around its periphery. When the cable needs to be pulled out, the cable inside the inner clamping ring 27 is rotated counterclockwise, causing the contraction ring 28 to contract counterclockwise, thereby expanding the diameter of the inner clamping ring 27. This facilitates cable pulling and prevents damage to the cable during the pulling process due to equipment fixation.

[0034] The usage process of this utility model is as follows:

[0035] First, thread the cable through the inner clamp 27 of the cable ring 11. Then, adjust the height of the cable plate 10 and cable ring 11 at the upper end of the telescopic frame 5 according to the height measured by the staff. Turn the rocker arm 8, which drives the gear 7 to rotate. The gear 7 meshes with the rack 6 on the telescopic frame 5, and the gear 7 drives the rack 6 to move, thereby moving the telescopic frame 5 up and down, so that the cable plate 10 and cable ring 11 reach the predetermined height. Then, use a tool to turn the positioning bolt 9 on the outer wall of the cable support 3, so that the front end of the positioning bolt 9 is tightly connected to the outer circumference of the telescopic frame 5 inside the cable support 3, thus fixing the position of the telescopic frame 5 after height adjustment.

[0036] The cable support 3 is moved using the casters 12 at the bottom of the cable support 3, which facilitates further adjustment of the distance between the cables.

[0037] During cable maintenance and other processes, when the cable needs to be pulled out, the cable rubs against the inner clamp ring 27. During the friction and dragging process, the inner clamp ring 27 will twist. The inner clamp ring 27 is made of elastic rubber material. After the inner clamp ring 27 is twisted counterclockwise, it will loosen. Rotating the cable inside the inner clamp ring 27 counterclockwise will also cause the shrink ring 28 connected between the inner clamp ring 27 and the outer ring 26 to rotate counterclockwise. When the shrink ring 28 rotates counterclockwise, it will continuously expand the diameter of the inner clamp ring 27 connected to one end, thereby pulling out the cable inside the inner clamp ring 27. After pulling out, the shrink ring 28 will automatically elastically return to its original position, so that the inner clamp ring 27 returns to its original diameter and continues to clamp the cable, thus completing the process of adjusting the height and pulling out the cable.

[0038] An embodiment of this utility model is as follows:

[0039] The base plate 1 is 800mm long, 600mm wide, and 20mm thick;

[0040] The diameter of the movable wheel 12 is 200mm and the thickness is 50mm;

[0041] The diagonal bracing column 2 is a seamless steel pipe with a diameter of 40mm, a length of 500mm, and an inclination of 45°;

[0042] The outer diameter of cable support post 3 is 200mm and the height is 1200mm;

[0043] The support fixing plate 13 is 100mm long, 80mm wide, and 10mm thick;

[0044] The diameter of the connecting screw 14 is 12mm and the length is 100mm;

[0045] The outer diameter of cable tray 4 is 180mm and the height is 300mm;

[0046] The telescopic frame 5 has an outer diameter of 150mm and a length of 1800mm;

[0047] The support rod 22 has a diameter of 25mm and a length of 400mm;

[0048] The diameter of the inclined support frame 23 is 30mm, the length is 500mm, and the inclination is 45°.

[0049] The rack 6 is 1000mm long, 30mm wide, and 10mm thick;

[0050] Gear 7 has a diameter of 80mm and a thickness of 20mm;

[0051] The rocker arm mounting plate 18 is 100mm long, 80mm wide, and 12mm thick;

[0052] The joystick 8 has a diameter of 25mm and a length of 400mm;

[0053] The cable board 10 is 1000mm long, 80mm wide, and 10mm thick;

[0054] The cable ring 11 has a mounting bracket 24 with a length of 120mm, a width of 30mm, and a thickness of 8mm;

[0055] The inner diameter of the clamping nut 25 is 30mm;

[0056] The outer diameter of the outer ring 26 is 100mm, and the inner diameter is 70mm;

[0057] The inner clamping ring 27 is made of elastic rubber with an outer diameter of 65mm and an inner diameter of 50mm.

[0058] The shrink ring 28 is 35mm long and 15mm wide.

Claims

1. A power cable support structure that facilitates height adjustment and cable retraction, characterized in that: It includes a base plate (1), diagonal bracing columns (2), cable support columns (3), telescopic frame (5), rack (6), gear (7), rocker arm (8), positioning bolt (9), cable plate (10), and cable ring (11). The cable support column (3) is a cylindrical body, and the lower end of the cable support column (3) is placed on the upper surface of the base plate (1). Four diagonal bracing columns (2) surround the cable support column (3) to fix the cable support column (3) to the base plate (1). The telescopic frame (5) is a cylindrical body, and the lower end of the telescopic frame (5) is inserted into the inner hole of the cable support column (3). The lower part of the telescopic frame (5) is fixed with a rack (6) along the length direction. A vertical rocker arm fixing plate (18) is welded to the inner wall of the cable support column (3). The rocker arm fixing plate (18) has a round hole. The outer wall of the cable support column (3) has a through hole that is opposite to the round hole of the rocker arm fixing plate (18). The rod of the rocker arm (8) passes through the through hole. The cable support (3) has a through hole on its outer wall and a round hole in the rocker arm fixing plate (18). The front end of the rocker arm (8) is fixedly connected to the gear (7). The gear (7) meshes with the rack (6) at the bottom of the telescopic frame (5). The rear end of the rocker arm (8) is L-shaped outside the cable support (3). The upper outer wall of the cable support (3) has a positioning screw hole. The positioning bolt (9) is screwed into the positioning screw hole. The front end of the positioning bolt (9) is tightly connected to the outer circumference of the telescopic frame (5) inside the cable support (3). The cable plate (10) is an L-shaped plate. One end of the two cable plates (10) is vertically inserted into the insertion hole (20) at the top of the telescopic frame (5). The other end of the two cable plates (10) is placed horizontally opposite each other on a straight line. Multiple cable rings (11) are fixedly arranged sequentially along the length direction on the upper surface of the two cable plates (10). The cable is threaded through the cable rings (11).

2. The power cable support structure for convenient height adjustment and cable retraction according to claim 1, characterized in that: The base plate (1) is a square plate, and two movable wheels (12) are fixedly installed on the bottom surface of the base plate (1). The two movable wheels (12) are respectively on both sides of the bottom surface of the base plate (1) and are parallel to each other.

3. The power cable support structure for convenient height adjustment and cable retraction according to claim 1, characterized in that: The cable support (3) is welded with four horizontal support fixing plates (13) evenly distributed around its circumference. The support fixing plates (13) have connecting holes in their centers. The lower ends of the four diagonal bracing columns (2) are welded to the upper surface of the base plate (1). The upper ends of the four diagonal bracing columns (2) are welded with connecting screws (14). The four connecting screws (14) pass through the connecting holes of the four support fixing plates (13) around the circumference of the cable support (3). The upper ends of the four connecting screws (14) are fixedly connected to the four support fixing plates (13) by fixing nuts (15).

4. The power cable support structure for convenient height adjustment and cable retraction according to claim 1, characterized in that: The cable support (3) has a support retainer (16) on its upper end face. The support retainer (16) has multiple round holes evenly distributed around its circumference. The upper end face of the cable support (3) has multiple threaded holes that are opposite to the multiple round holes of the support retainer (16). The fixing bolts fix the support retainer (16) to the upper end of the cable support (3) through the round holes of the support retainer (16) and the threaded holes at the upper end of the cable support (3).

5. The power cable support structure for convenient height adjustment and cable retraction according to claim 4, characterized in that: The cable support (3) has a cable rack (4) above it. The cable rack (4) is a cylindrical body. The lower end of the cable rack (4) is welded to the inner hole of the support ring (16). The lower end of the cable rack (4) is fixedly connected to the upper end face of the cable support (3) through the support ring (16). There is a fixing ring (17) above the upper end face of the cable rack (4). Multiple round holes are evenly distributed around the circumference of the fixing ring (17). Multiple threaded holes are on the upper end face of the cable rack (4) and opposite to the multiple round holes of the fixing ring (17). The fixing bolts fix the fixing ring (17) to the upper end of the cable rack (4) through the round holes of the fixing ring (17) and the threaded holes at the upper end of the cable rack (4). The lower part of the telescopic frame (5) extends into the inner cavity of the cable rack (4) and the cable support (3) through the inner hole of the fixing ring (17). The telescopic frame (5) and the inner hole of the fixing ring (17) are in sliding fit.

6. The power cable support structure for convenient height adjustment and cable retraction according to claim 1, characterized in that: The telescopic frame (5) has a support ring (19) on its upper end face. The support ring (19) has a square insertion hole (20) in the center. The lower ends of the two cable plates (10) are inserted into the insertion hole (20) in parallel. A reinforcing ring (21) is welded to the outer periphery of the middle part of the telescopic frame (5). There are multiple support rods (22) that surround the cylindrical body of the telescopic frame (5) between the support ring (19) and the reinforcing ring (21). The two ends of the support rods (22) are welded to the support ring (19) and the reinforcing ring (21) respectively. There are inclined support frames (23) on the opposite sides of the reinforcing ring (21). The lower ends of the two inclined support frames (23) are welded to the reinforcing ring (21) respectively. The upper ends of the two inclined support frames (23) are welded to the bottom surface of the outer end of the two cable plates (10) respectively.

7. The power cable support structure for convenient height adjustment and cable retraction according to claim 1, characterized in that: The cable ring (11) consists of a fixing frame (24), clamping nuts (25), an outer ring (26), an inner clamping ring (27), and a shrinking ring (28). The fixing frame (24) is n-shaped, and the two ends of the fixing frame (24) are welded to the upper surface of the cable plate (10). The upper part of the outer ring (26) is movably connected to the lower surface of the fixing frame (24). The two clamping nuts (25) are threaded to the two ends of the outer ring (26). The inner clamping ring (27) is located in the outer ring (26), and the shrinking ring (28) is clamped in the gap between the outer ring (26) and the inner clamping ring (27).

8. The power cable support structure for convenient height adjustment and cable retraction according to claim 7, characterized in that: The inner clamping ring (27) is an elastic circular ring. The diameter of the inner clamping ring (27) matches the diameter of the cable in the supported state. The shrinking ring (28) consists of multiple arc-shaped pieces. One end of the multiple arc-shaped pieces of the shrinking ring (28) is welded around the inner wall of the outer ring (26). The other end of the multiple arc-shaped pieces of the shrinking ring (28) is in contact with the circumferential wall of the inner clamping ring (27). The arc bending direction of the multiple arc-shaped pieces of the shrinking ring (28) is the same.

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