Height-adjustable cable trench support

Abstract

The utility model discloses a height-adjustable cable trench support, and relates to a cable trench support in a transformer substation and a converter station. The cable trench comprises a cable trench body and multiple layers of cable cross arm groups, the multiple layers of cable cross arm groups are sequentially installed on the side wall of the cable trench body from top to bottom, the cable trench further comprises a fixing channel, and the cable cross arm groups are connected with the fixing channel through bolts. According to the utility model, the height of the cable cross arm can be adjusted by adjusting the vertical height of the bolt in the straight groove; the heights of the cable cross arms are finely adjusted to ensure that all the cable cross arms in the super-long cable trench are at the same elevation, and snakelike laying of the cable is avoided.

Description

Technical Field

[0001] The utility model relates to a cable trench support in a transformer substation and a converter station, and more specifically to a height-adjustable cable trench support. Background Art

[0002] The cable trench supports in substations and converter stations usually adopt cantilever angle steel type. There are two main connection types between the ends of the angle steel and the side walls of the cable trench: one is buried iron welding with the side walls of the cable trench, and the other is fixed to the side walls of the cable trench by expansion bolts. The welding method will lead to a large amount of on-site welding workload, the welding quality is difficult to ensure, and the welding parts are prone to corrosion during use; when using expansion bolts for connection, due to the small cable trench space, on-site drilling is difficult, and drilling will cause a certain degree of damage to the side walls of the cable trench; at the same time, the cable trench supports fixed by the above two methods cannot be adjusted, which is easy to cause serpentine laying of cables and is not conducive to the later adjustment of the cable laying height.

[0003] Therefore, it is necessary to develop an adjustable height cable trench support which has an adjustable elevation and is convenient for later cable laying and modification. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a height-adjustable cable trench bracket.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a height-adjustable cable trench bracket, comprising a cable trench body and a cable cross-arm group, wherein multiple layers of the cable cross-arm group are sequentially installed on the side wall of the cable trench body from top to bottom, and characterized in that: it also includes a fixed groove, which is pre-buried in the side wall from top to bottom, and the cable cross-arm group is connected to the fixed groove by bolts.

[0006] In the above technical solution, the cable cross arm group includes cable cross arms symmetrically arranged on both side walls of the cable trench body.

[0007] In the above technical solution, the cable cross arm includes a channel steel and a fixing steel plate connected to the channel steel, and the fixing steel plate is provided with bolt holes matching the bolts.

[0008] In the above technical solution, the fixing channel includes a straight groove and an anchor bolt, the straight groove is connected to the fixing steel plate through a bolt, and the anchor bolt is connected to the straight groove.

[0009] In the above technical solution, the opening side of the straight groove is flush with the side wall.

[0010] In the above technical solution, the cable cross arm group has 3-5 layers.

[0011] In the above technical solution, an oblong hole is provided on the top surface of the channel steel.

[0012] In the above technical solution, the bolt is a T-bolt.

[0013] In the above technical solution, there are two fixing grooves, and bolt holes are provided at four corners of the fixing steel plate. The center spacing of the two fixing grooves is the same as the horizontal spacing of adjacent bolt holes.

[0014] In the above technical solution, the cable trench body also includes a bottom plate and a prefabricated cover plate, and the prefabricated cover plate is higher than the site elevation.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1) The cable cross arm of the utility model is connected to the fixed groove by bolts, avoiding on-site welding and expansion bolt drilling; the operation is simple, the installation is convenient, the on-site construction period is shortened, and the cost is saved.

[0017] 2) The utility model realizes the adjustable height of the cable cross arm by adjusting the vertical height of the bolt in the straight groove; the height of the cable cross arm is finely adjusted to ensure that all the cable cross arms in the extra-long cable trench are at the same elevation, thereby avoiding the serpentine laying of the cables.

[0018] 3) When the height of the cable trench support needs to be adjusted during the transformation of the substation and converter station, the existing technology requires the removal of the existing support; while the utility model does not require the removal of the existing support, and the height of the cable cross arm can be adjusted by loosening the bolts; it is convenient and quick to meet the transformation requirements, with a shorter construction period and lower maintenance and transformation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the prior art.

[0021] Figure 3 for Figure 1 Sectional view without fixed cross arm at AA.

[0022] Figure 4 for Figure 1 Cross-sectional view of the fixed cross arm installed at AA in the middle.

[0023] Figure 5 for Figure 3 Cross-sectional view at the middle BB.

[0024] Figure 6 for Figure 4 Cross-sectional view at CC.

[0025] Figure 7 for Figure 6Cross-sectional view at DD in the middle.

[0026] Among them, 1-cable trench body, 11-side wall, 12-bottom plate, 13-prefabricated cover plate, 2-cable cross arm group, 21-cable cross arm, 211-channel steel, 2111-oblong hole, 212-fixing steel plate, 2121-bolt hole, 3-fixing groove, 31-straight groove, 311-first baffle, 312-second baffle, 32-anchor bolt, 4-bolt. DETAILED DESCRIPTION

[0027] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0028] Referring to the attached drawings, it can be seen that: a cable trench bracket with adjustable height includes a cable trench body 1, a cable cross arm group 2, and multiple layers of the cable cross arm group 2 are installed on the side wall 11 of the cable trench body 1 from top to bottom. It is characterized in that it also includes a fixed groove 3, and the fixed groove 3 is pre-buried in the side wall 11 from top to bottom. The cable cross arm group 2 is connected to the fixed groove 3 by bolts 4.

[0029] like Figure 1 As shown, the cable trench body 1 includes side walls 11, a bottom plate 12 and a prefabricated cover plate 13; the side walls 11, the bottom plate 12 and the prefabricated cover plate 13 together constitute the space inside the cable trench for bracket fixing, cable laying and operation and maintenance; the prefabricated cover plate 13 is 100-150mm above the site elevation.

[0030] The cable cross arm assembly 2 includes cable cross arms 21 symmetrically arranged on the side walls 11 of the cable trench body 1 .

[0031] The cable cross arm 21 includes a channel steel 211 and a fixing steel plate 212 connected to the channel steel 211. The fixing steel plate 212 is provided with bolt holes 2121 matching the bolts 4. The fixing steel plate 212 and the channel steel 211 are pre-welded in the factory using fillet welds.

[0032] like Figure 6 As shown, the fixing channel 3 includes a straight groove 31 and an anchor bolt 32 . The straight groove 31 is connected to the fixing steel plate 212 through a bolt 4 , and the anchor bolt 32 is connected to the straight groove 31 .

[0033] The opening side of the straight groove 31 is flush with the side wall 11 .

[0034] The cable cross arm group 2 has 3-5 layers, and cables are laid on the cable cross arms 2 of each layer.

[0035] The top surface of the channel steel 211 is provided with an oblong hole 2111, the size of the oblong hole 2111 is 15×70, and is used to fix the cable clamp.

[0036] The bolt 4 is a T-shaped bolt, and a first baffle 311 and a second baffle 312 are provided on the open side of the straight groove 31; when the head of the bolt 4 moves in the straight groove 31, the first baffle 311 and the second baffle 312 of the straight groove 31 will limit the lateral displacement and horizontal displacement of the bolt 4, so that the bolt 4 can only move vertically in the straight groove 31; the fixed steel plate 212 can be slidably connected to the straight groove 31 through the bolt 4, so as to adjust the vertical position of the cable cross arm 21.

[0037] There are two fixed grooves 3, and the center distance between the two fixed grooves 3 is 200 mm; the four corners of the fixed steel plate 212 are provided with bolt holes 2121 with a diameter of 18 mm, the horizontal distance between the bolt holes 2121 is 200 mm, and the vertical distance between the bolt holes 2121 is 140 mm; the center distance between the two fixed grooves 3 is the same as the horizontal distance between adjacent bolt holes 2121; the fixed steel plate 212 is connected to the two fixed grooves 3 by four bolts, so that the connection between the cable cross arm 21 and the fixed groove 3 is more stable.

[0038] like Figure 2 As shown, the prior art is to weld the cable cross arm group 2 to the side wall 11. The quality of on-site welding is difficult to ensure, and the welding parts are prone to corrosion during use. When the height of the cable cross arm group 2 needs to be adjusted, the welded cable cross arm group 2 can only be removed and re-welded after the height is determined.

[0039] Other parts not described belong to the prior art.

Claims

1. A height-adjustable cable trench support, comprising a cable trench body (1), a cable cross arm group (2), wherein multiple layers of the cable cross arm groups (2) are sequentially mounted on the side wall (11) of the cable trench body (1) from top to bottom, characterized in that: It also comprises a fixed groove (3), wherein the fixed groove (3) is pre-buried in the side wall (11) from top to bottom, and the cable cross arm group (2) is connected to the fixed groove (3) via bolts (4).

2. The height-adjustable cable trench support according to claim 1, characterized in that: The cable cross arm group (2) comprises cable cross arms (21) symmetrically arranged on the side walls (11) on both sides of the cable trench body (1).

3. The height-adjustable cable trench support according to claim 2, characterized in that: The cable cross arm (21) comprises a channel steel (211) and a fixing steel plate (212) connected to the channel steel (211), wherein the fixing steel plate (212) is provided with a bolt hole (2121) matching the bolt (4).

4. The height-adjustable cable trench support according to claim 3, characterized in that: The fixing channel (3) comprises a straight groove (31) and an anchor bolt (32); the straight groove (31) is connected to the fixing steel plate (212) via a bolt (4); and the anchor bolt (32) is connected to the straight groove (31).

5. The height-adjustable cable trench support according to claim 4, characterized in that: The opening side of the straight groove (31) is flush with the side wall (11).

6. The height-adjustable cable trench support according to claim 1, characterized in that: The cable cross arm group (2) has 3 to 5 layers.

7. The height-adjustable cable trench support according to claim 3, characterized in that: The top surface of the channel steel (211) is provided with an oblong hole (2111).

8. The height-adjustable cable trench support according to claim 1, characterized in that: The bolt (4) is a T-shaped bolt.

9. The height-adjustable cable trench support according to claim 3, characterized in that: There are two fixing grooves (3), and bolt holes (2121) are provided at four corners of the fixing steel plate (212). The center spacing between the two fixing grooves (3) is the same as the horizontal spacing between adjacent bolt holes (2121).

10. The height-adjustable cable trench support according to claim 1, characterized in that: The cable trench body (1) further comprises a bottom plate (12) and a prefabricated cover plate (13), wherein the prefabricated cover plate (13) is higher than the site elevation.

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