An assembly for a swivelable column cable support

Abstract

The utility model provides a kind of assembly rotatable column cable support, first horizontal support is connected on column body by first rotating end plate, second horizontal support is connected on column body by second rotating end plate, third horizontal support is connected on column body by third rotating end plate;Column body includes column and at least two first round holes being arranged on column, and first round hole is distributed along the axis of column;The first rotating end plate, second rotating end plate and third rotating end plate all include round plate and at least two second round holes being arranged on round plate, and second round hole is circumferentially distributed.The utility model adjusts the rotation angle of first rotating end plate, second rotating end plate, third rotating end plate, makes the placement plane of each horizontal support tangent to cable outer surface, avoids the acute edge of cable support and cable outer surface contact, to ensure that the contact area of cable and horizontal support is maximum, to protect the service life of cable, reduce security risk occurrence.

Description

Technical Field

[0001] This utility model relates to an assembled rotatable column cable bracket type, which is an improvement on conventional cable brackets used in cable wells. Background Technology

[0002] With the rapid development of urban modernization, urban electricity consumption has increased significantly. Due to limited urban surface space and constraints imposed by objective factors such as land planning, environmental protection, and fire safety, power transmission projects have gradually shifted from above-ground to underground. Cable tunnel working shafts, as a crucial component of high-voltage underground transmission line channels, are not only physical structural "joints" but also functional "control centers." When connecting structures at different burial depths, cables must climb and bend within the shaft. Therefore, installing adjustable cable support columns within the working shaft allows for precise and effective positioning and arrangement. This not only meets the electrical requirements of cable laying but also allows installers to flexibly adjust the cable laying position vertically and horizontally through the regularly arranged bolt holes on the columns. This is of great significance for cable construction, laying, and subsequent operation and maintenance. Furthermore, when cables in cable manholes are bent vertically, there is a certain angle between the mounting plane of conventional non-rotatable column cable supports and the outer surface of the cable. This causes "pressure sores" and damage to the cable sheath at the point where it contacts the cable support under long-term high-voltage operation and continuous heat generation. This can lead to maintenance difficulties, increased safety hazards, and significantly shorten the service life of high-voltage cables and their operational lifespan. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to avoid damage to high-voltage cables by cable supports in wells, and to provide a cable support with a rotatable column.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A rotatable column cable bracket includes a vertically arranged column body, a base welded to the bottom of the column body, the base fixing the column body to the well bottom plate by expansion bolts, and a first horizontal bracket, a second horizontal bracket and a third horizontal bracket provided on the column body, wherein the first horizontal bracket is connected to the column body by a first rotating end plate, the second horizontal bracket is connected to the column body by a second rotating end plate, and the third horizontal bracket is connected to the column body by a third rotating end plate; The column body includes a column and at least two first circular holes disposed on the column, the first circular holes being distributed along the axial direction of the column; The first rotating end plate, the second rotating end plate, and the third rotating end plate each include a circular plate and at least two second circular holes disposed on the circular plate, the second circular holes being distributed circumferentially.

[0005] The first circular hole is a bolt hole with a diameter of 21.5 mm, and the distance between adjacent first circular holes is 50 mm.

[0006] The first horizontal support is located at the top, the second horizontal support is located in the middle, and the third horizontal support is located at the bottom. The first and second horizontal supports are both made of high-strength steel, and the third horizontal support is made of austenitic stainless steel bent into a channel-shaped structure. The lower side of the channel-shaped structure is made of the same material stiffening plate.

[0007] The first rotating end plate and the first horizontal support, the second rotating end plate and the second horizontal support, and the third rotating end plate and the third horizontal support are all welded together as one unit.

[0008] A horizontal support connecting frame is provided on the first, second, and third rotating end plates. For the first and second rotating end plates, the horizontal support connecting frame is L-shaped. For the third rotating end plate, the horizontal support connecting frame on the third rotating end plate is an open rectangle.

[0009] The second round hole is a bolt hole with a diameter of 21.5mm.

[0010] Compared with the prior art, the present invention has the following beneficial effects: During installation, by adjusting the rotation angles of the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6, the placement plane of each horizontal bracket is made tangent to the outer surface of the cable. This prevents the sharp edges of the cable bracket from contacting the outer surface of the cable, ensuring the maximum contact area between the cable and the horizontal bracket, thereby protecting the cable's service life and reducing potential safety hazards.

[0011] The new type of assembled rotatable column cable support allows for flexible adjustment of the spacing, number of layers, and net length according to electrical laying requirements. It achieves the same strength, stability, and electrical performance requirements as conventional cable supports while also enabling factory prefabrication, facilitating direct assembly and fastening from the factory to the site. This significantly shortens the construction cycle and offers excellent environmental and economic benefits. Furthermore, it avoids welding operations in confined spaces such as tunnels and manholes, reducing safety hazards and providing significant social benefits. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the column body; Figure 3 This is a structural diagram of the first rotating end plate; Figure 4 This is a structural diagram of the second rotating end plate; Figure 5 This is a structural diagram of the third rotating end plate; Figure 6 This is a diagram of the bottom structure of the column body; Figure 7 This is a structural diagram of the base. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] like Figure 1 As shown, an assembly rotatable column cable bracket includes a vertically arranged column body 1. A base 10 is welded to the bottom of the column body 1. The base 10 fixes the column body 1 to the well bottom plate 11 by expansion bolts 17. A first horizontal support 3, a second horizontal support 5, and a third horizontal support 7 are provided on the column body 1. The first horizontal support 3 is connected to the column body 1 by a first rotating end plate 2. The second horizontal support 5 is connected to the column body 1 by a second rotating end plate 4. The third horizontal support 7 is connected to the column body 1 by a third rotating end plate 6.

[0016] like Figure 2 As shown, the column body 1 includes a column and at least two first circular holes 12 disposed on the column, the first circular holes 12 being distributed along the axial direction of the column. During assembly, the column body 1 can be a square steel tube 16 with specifications of 140x8mm, and bolt holes with a diameter of 21.5mm for the first circular holes 12, with a spacing of 50mm between adjacent first circular holes 12. A base 10 is welded to the bottom of the column body 1 and fixed to the well base plate 11 with expansion bolts, the position of which can be determined according to the actual bending of the cable laying.

[0017] Better, such as Figure 6 , Figure 7As shown, the bottom of the column body 1 has a square steel tube 16, which is welded to the base plate 10. The base plate 10 can be a square base plate. Bolt holes are opened at the four corners of the square base plate, and expansion bolts 17 are installed in the bolt holes. The column body 1 is fixed to the well bottom plate 11 by the expansion bolts 17.

[0018] In this invention, the first horizontal support 3 is located at the top, the second horizontal support 5 is located in the middle, and the third horizontal support 7 is located at the bottom. The first horizontal support 3 is made of Q355 high-strength steel and can be used to place communication optical cable trays, low-voltage power cables, etc. The second horizontal support 5 is made of Q355 high-strength steel and can be used to place cables with voltage levels of 110kV and below. The third horizontal support 7 is made of austenitic stainless steel 304L bent into a channel-shaped structure for placing 220kV cables. The lower side of the channel-shaped structure is reinforced with stiffening plates 8 and end plates of the same material. In addition, the spacing, number of layers, and net length of the first horizontal support 3, the second horizontal support 5, and the third horizontal support 7 can all be adjusted according to the electrical laying requirements such as different voltage levels and cable arrangement methods.

[0019] Even better, the first rotating end plate 2 and the first horizontal support 3, the second rotating end plate 4 and the second horizontal support 5, and the third rotating end plate 6 and the third horizontal support 7 are all welded together as one unit.

[0020] Better, such as Figure 3 , Figure 4 , Figure 5 As shown, the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6 each include a circular plate 13 and at least two second circular holes 14 disposed on the circular plate 13. The second circular holes 14 are distributed in a circle. During installation, by adjusting the relative position of the second circular holes 14 on the rotating end plate and the first circular holes 12 on the column body 1, the relative position of each horizontal bracket and the column body 1 can be adjusted, thereby achieving installation at different angles between the three horizontal brackets and the column body 1.

[0021] It should be noted that horizontal support connecting frames 15 are provided on the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6. For the first rotating end plate 2 and the second rotating end plate 4, the horizontal support connecting frames 15 are L-shaped; while for the third rotating end plate 6, the horizontal support connecting frames 15 on the third rotating end plate 6 are unclosed rectangles.

[0022] Preferably, the second circular hole 14 is a bolt hole with a diameter of 21.5 mm.

[0023] It should be noted that all non-stainless steel exposed components (including column body 1, first rotating end plate 2, second rotating end plate 4, third rotating end plate 6, first horizontal support 3, second horizontal support 5, and third horizontal support 7) should be hot-dip galvanized.

[0024] The construction method of this utility model is as follows: like Figure 2 As shown, the column body 1 has a base 10 pre-welded in the factory, and the column body has a first round hole 12 with a diameter of 21.5mm and a spacing of 50mm reserved within a certain height range, and is hot-dip galvanized.

[0025] like Figure 3 As shown, in the factory, the first horizontal support 3, the second horizontal support 5, and the third horizontal support 7 are welded together to form the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6. Then, a second circular hole 14 with a diameter of 21.5mm is pre-drilled within a certain angle range on the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6. Cable clamp mounting holes are pre-drilled on the cable placement plane of each horizontal support (the hole spacing and size are determined according to the clamp specifications). All carbon steel components except for stainless steel supports are hot-dip galvanized.

[0026] After the cable tunnel working shaft is constructed, the planar layout of the three horizontal supports within the shaft is determined according to the structural dimensions of the shaft, the cable turning radius, the turning angle and height difference of the structures at both ends of the shaft, and other actual conditions within the shaft. The column body 1 of the cable support is fixed to the shaft bottom plate 11 using anchor bolts. During installation, the rotation angles of the first rotating end plate 2, the second rotating end plate 4, and the third rotating end plate 6 are adjusted to ensure that the placement plane of each horizontal support is tangent to the outer surface of the cable, avoiding contact between the sharp edges of the cable support and the outer surface of the cable. This ensures the maximum contact area between the cable and the horizontal support, thereby protecting the cable's service life and reducing safety hazards.

[0027] The new type of assembled rotatable column cable support allows for flexible adjustment of the spacing, number of layers, and net length according to electrical laying requirements. It achieves the same strength, stability, and electrical performance requirements as conventional cable supports while also enabling factory prefabrication, facilitating direct assembly and fastening from the factory to the site. This significantly shortens the construction cycle and offers excellent environmental and economic benefits. Furthermore, it avoids welding operations in confined spaces such as tunnels and manholes, reducing safety hazards and providing significant social benefits.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A type of rotatable cable bracket, characterized in that: The column body (1) is vertically arranged. A base (10) is welded to the bottom of the column body (1). The base (10) fixes the column body (1) to the well bottom plate (11) by expansion bolts (17). A first horizontal support (3), a second horizontal support (5) and a third horizontal support (7) are provided on the column body (1). The first horizontal support (3) is connected to the column body (1) by a first rotating end plate (2). The second horizontal support (5) is connected to the column body (1) by a second rotating end plate (4). The third horizontal support (7) is connected to the column body (1) by a third rotating end plate (6). The column body (1) includes a column and at least two first circular holes (12) provided on the column, the first circular holes (12) being distributed along the axial direction of the column; The first rotating end plate (2), the second rotating end plate (4) and the third rotating end plate (6) all include a circular plate (13) and at least two second circular holes (14) provided on the circular plate (13), the second circular holes (14) being circumferentially distributed.

2. The rotatable cable bracket assembly according to claim 1, characterized in that: The first circular hole (12) is a bolt hole with a diameter of 21.5 mm, and the distance between adjacent first circular holes (12) is 50 mm.

3. The rotatable cable bracket assembly according to claim 1, characterized in that: The first horizontal support (3) is located at the top, the second horizontal support (5) is located in the middle, and the third horizontal support (7) is located at the bottom. The first horizontal support (3) and the second horizontal support (5) are both made of high-strength steel, and the third horizontal support (7) is made of austenitic stainless steel bent into a channel structure. The lower side of the channel structure is made of stiffening plate (8) of the same material.

4. The rotatable cable bracket assembly according to claim 1, characterized in that: The first rotating end plate (2) and the first horizontal support (3), the second rotating end plate (4) and the second horizontal support (5), and the third rotating end plate (6) and the third horizontal support (7) are all welded together as one unit.

5. A rotatable cable bracket assembly according to claim 1, characterized in that: A horizontal support frame (15) is provided on the first rotating end plate (2), the second rotating end plate (4) and the third rotating end plate (6); for the first rotating end plate (2) and the second rotating end plate (4), the horizontal support frame (15) is L-shaped; for the third rotating end plate (6), the horizontal support frame (15) on the third rotating end plate (6) is an unclosed rectangle.

6. The rotatable cable bracket assembly according to claim 1, characterized in that: The second round hole (14) is a bolt hole with a diameter of 21.5 mm.

Images