Assembly type cable trench

Abstract

The utility model discloses an assembled cable trench which comprises a bottom plate, side plates arranged above the left side and the right side of the bottom plate, and a cover plate located at the upper ends of the side plates. A plurality of wall columns which are vertically arranged at intervals are arranged on the surfaces of the outward sides of the side plates, a plurality of cross arms which are horizontally arranged at intervals are arranged on the surfaces of the wall columns, cable supports used for bearing cables are arranged on the wall columns, the cable supports are connected to the wall columns through a plurality of second bolts, and the single first bolts penetrate through the side plates. The cross arms are arranged on the outer sides of the side plates and buried in the peripheral soil body, the pressure of the cable support on the inner side of the trench wall is counteracted through the pressure of the soil on the outer side of the trench wall, so that the bending moment of the pilaster base is reduced, cracking and water seepage at the installation position of the side plates and the bottom plate are avoided, the trench wall is prevented from inclining inwards under the action of the pressure of the soil on the outer side, and the stability of the trench wall is kept; and finally, in the channel after hoisting and assembling are completed, the cross arm on the outer side plays a role of a hoisting point, and damage to the integrity of the channel body caused by a hoisting tool or mechanical equipment in the mounting and hoisting process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power facilities, in particular to a prefabricated cable trench. Background Art

[0002] At present, power grid companies in various regions vigorously promote the application of prefabricated substations and converter stations. The main buildings are processed in a factory modular manner and installed on site, which reduces the on-site construction difficulty and shortens the construction period, and has high promotion value. Therefore, structures such as cable trenches supporting the main project should also meet the requirements of the prefabricated substation construction of power grid companies.

[0003] Common cable trench construction schemes are mainly divided into two types: cast-in-place and prefabricated. The prefabricated cable trench can realize factory prefabrication production and on-site assembly construction, and better meet the high standards of modern power construction for construction period, finished product quality and environmental protection. However, the trench walls of the existing prefabricated cable trenches incline inward under the action of the external soil pressure, resulting in cracking and water seepage at the installation position of the side plates and the bottom plate.

[0004] Therefore, it is urgent to propose a new solution to solve the above problems. Summary of the Invention

[0005] The utility model provides a prefabricated cable trench, which can solve the problem that the trench walls of the existing prefabricated cable trenches incline inward under the action of the external soil pressure, resulting in cracking and water seepage at the installation position of the side plates and the bottom plate.

[0006] The utility model provides a prefabricated cable trench, including a bottom plate, side plates arranged above the left and right sides of the bottom plate, and a cover plate located at the upper ends of the side plates;

[0007] On the outer side surface of the side plate, a plurality of vertically arranged wall columns are spaced at intervals. On the surface of the wall columns, a plurality of cross bars are horizontally spaced at intervals. Cable brackets for carrying cables are arranged on the wall columns. The cable brackets are connected to the wall columns through a plurality of first bolts, and each single first bolt penetrates through the side plate.

[0008] Further, the plurality of cross bars are arranged in parallel with each other.

[0009] Further, the cross bars on the left and right sides of the side plate are symmetrically arranged along the central axis of the cable trench.

[0010] Further, a buried pipe is arranged along the length direction below the cable trench, and an opening for the buried pipe to pass through is formed on the bottom plate.

[0011] Further, at the connection position of two adjacent side plates, a clamping structure with concave-convex cooperation and a connection structure are provided.

[0012] Further, the engaging structure includes a protruding portion on one of the side plates and a recessed portion on the other side plate.

[0013] Further, the connecting structure includes a connecting plate that fits against two adjacent side plates and a bolt fastener for fixing the connecting plate to the side plates.

[0014] Further, the cross arm is fixedly arranged on the pilaster through a plurality of second bolts, and the second bolts and the first bolts are arranged in a vertically offset manner.

[0015] Further, the side plate further includes a side plate coping at the top and a side plate footing at the bottom.

[0016] Further, the bottom plate and the side plate footing are connected by a plurality of third bolts.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. By arranging a cross arm on the outer side of the side plate and burying it in the surrounding soil, the present utility model utilizes the earth pressure on the outer side of the trench wall to offset the pressure of the cable support on the inner side of the trench wall, thereby reducing the bending moment of the pilaster base, avoiding cracking and water seepage at the installation location of the side plate and the bottom plate, preventing the inner inclination of the trench wall under the action of the outer earth pressure, maintaining the stability of the trench wall, and finally, the outer cross arm serves as a lifting point in the trench after the hoisting and assembly are completed, reducing the damage and injury to the integrity of the trench body by the lifting tool or mechanical equipment during the installation and hoisting process;

[0019] 2. By opening holes on the bottom plate for the buried pipes to pass through, the present utility model facilitates marking the positions of the buried pipes, avoids damaging the existing directly buried cables during later construction or renovation, and also avoids damage and injury to the directly buried cables caused by uneven settlement of the trench when crossing the bottom of the cable trench. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the prefabricated cable trench of the present utility model;

[0021] Figure 2 is a side view of the side plate of the present utility model;

[0022] Figure 3 is a front view of the side plate of the present utility model;

[0023] Figure 4 is a top view of the side plate of the present utility model;

[0024] Figure 5 is a schematic longitudinal connection structure diagram of the bottom plate of the present utility model;

[0025] Figure 6 is a schematic longitudinal connection structure diagram of the side plate of the present utility model;

[0026] Figure 7 Structural schematic diagram of the connection between the side plate and the bottom plate of the present utility model;

[0027] Reference numerals: 1, bottom plate; 11, third bolt; 12, opening; 2, side plate; 21, wall column; 22, cross arm; 23, side plate coping; 24, side plate wall footing; 25, first bolt; 26, second bolt; 3, cable bracket; 4, buried pipe; 5, engaging structure; 51, protruding portion; 52, recessed portion; 6, connecting structure; 61, connecting plate; 62, bolt fastener; 7, cover plate; 71, buffer gasket. Specific embodiments

[0028] To further understand the content, features and effects of the present utility model, the following embodiments are hereby given and described in detail in conjunction with the attached Figures 1 to 7 as follows.

[0029] As Figures 1 to 7 shown, this embodiment provides an assembled cable trench, including a bottom plate 1, side plates 2 provided on the left and right sides of the bottom plate 1, and a cover plate 7 located at the upper end of the side plates 2. A 240*20mm rectangular groove is provided at the center of the bottom plate 1 for collecting accumulated water in the trench and quickly discharging it to the catch basin and out of the trench. The cover plate 7 adopts an equal cross-section form, with a designed thickness of 40mm and a designed load of 10kN / ㎡. In addition, a buffer gasket 71 is provided below the cover plate 7 to prevent abnormal noise of the cover plate caused by horizontal height differences;

[0030] On the outer side of the above-mentioned side plate 2, there is a wall column 21. On the surface of the above-mentioned wall column 21, there are multiple horizontally spaced cross arms 22 arranged. A cable bracket 3 for carrying cables is provided on the above-mentioned wall column 21. The above-mentioned cable bracket 3 is connected to the wall column 21 through two first bolts 25. Each single first bolt 25 penetrates the above-mentioned side plate 2. There are three wall columns 21 provided on a single side plate 2, one of which is located at the center, and the other two are symmetrically arranged on its left and right. The single-mode length of the cable trench side plate 2 and the bottom plate 1 is 2m. The distance from the center of the side plate wall column 21 on both sides to the edge is 333.33mm, and the center distance between adjacent two wall columns 21 is 666.66mm, so that the whole can meet the stress requirements of the cable bracket.

[0031] The present utility model reduces the bending moment at the base of the wall column by setting cross arms on the outer side of the side plate and burying them in the surrounding soil, and using the soil pressure on the outer side of the trench wall to offset the pressure of the cable bracket on the inner side of the trench wall, thereby avoiding cracking and water seepage at the installation place of the side plate and the bottom plate, preventing the inner inclination of the trench wall under the action of the outer soil pressure, maintaining the stability of the trench wall. Finally, after the completion of the hoisting and assembly of the trench, the outer cross arm plays the role of a lifting point, reducing the damage and injury to the integrity of the trench body by the lifting tool or mechanical equipment during the installation and hoisting process.

[0032] In this embodiment, asFigure 1 As shown, the two cross arms 22 are arranged parallel to each other, which ensures the overall stability.

[0033] In this embodiment, as Figure 1 shown, the cross arms 22 on the left and right sides of the side plate 2 are symmetrically arranged along the central axis of the cable trench, which ensures the overall balance.

[0034] In this embodiment, as Figure 1 shown, a buried pipe 4 is arranged along the length direction below the cable trench, and an opening 12 for the buried pipe 4 to pass through is opened on the bottom plate 1. By opening an opening on the bottom plate for the buried pipe to pass through, the position of the buried pipe is convenient to be marked, which can avoid damaging the existing directly buried cables during later construction or renovation. At the same time, it can also avoid the damage and injury to the directly buried cables caused by the uneven settlement of the trench bottom when crossing the cable trench bottom. In addition, for the situation where some cables are not allowed to be laid in the same trench, the trench bottom embedded pipe is used for crossing, which reduces the overexcavation and backfilling workload.

[0035] In this embodiment, as Figure 5 shown, a clamping structure 5 and a connecting structure 6 with concave-convex cooperation are arranged at the connection of two adjacent side plates 2. The clamping structure 5 includes a convex portion 51 on one side plate 2 and a concave portion 52 on the other side plate 2. The connecting structure 6 includes a connecting plate 61 that fits with two adjacent side plates 2 and a bolt fastener 62 for fixing the connecting plate 61 on the side plate 2. The specification of the connecting plate 61 is a 300*50*8 hot-dip galvanized steel plate, the bolt fastener 62 is an M16 nut, and the number of bolt fasteners 62 is two. In addition, as Figure 6 shown, the above-mentioned connecting structure 6 is arranged at the connection of two adjacent bottom plates 1, and then covered with concrete at the connection to ensure the strength of the connection of the entire cable trench. Of course, the above-mentioned clamping structure 5 can also be set.

[0036] In this embodiment, as Figure 1 shown, the cable support 3 is fixedly arranged on the wall column 21 through two first bolts 25. The first bolt 25 penetrates through the entire side plate 2 and is fastened in the wall column 21. By pre-embedding nuts in the wall column 21, the cable support 3 and the cross arm 22 are fixed by bolts later, avoiding on-site drilling and installation processes, etc. The first bolt 25 and the second bolt 26 are arranged vertically and horizontally offset to ensure the overall strength.

[0037] In this embodiment, as Figure 1As shown, the above-mentioned side plate 2 further includes a side plate top pressing 23 at the top and a side plate wall foot 24 at the bottom. The side plate top pressing 23, the side plate wall foot 24 and the middle side plate body are integrally formed. Both the side plate top pressing 23 and the side plate wall foot 24 are arranged outward. The side plate 2 adopts a variable cross-section form. The minimum cross-section thickness is 40 mm thick, the cross-section thickness at the pilaster 21 and the side plate top pressing 23 is 80 mm thick, and the thickness at the side plate wall foot 24 is 110 mm thick, minimizing the cross-sectional area to the greatest extent.

[0038] In this embodiment, as Figure 7 shown, the above-mentioned bottom plate 1 and the side plate wall foot 24 are connected by a plurality of third bolts 11. The specification of the third bolt 11 is internal hexagonal M16x80. The cable trench side plate is fixed by bolts. After installation, the groove gap is filled with a sealing material to improve the anti-overturning ability of the side plate and prevent water seepage from the gap.

[0039] The above-mentioned utility model of the present invention only expresses the implementation manners of the embodiments of the present utility model, and thus cannot be construed as a limitation on the scope of the utility model patent, nor is it a limitation on the structure of the embodiments of the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the embodiments of the present utility model, several changes and improvements can still be made, and these all belong to the protection scope of the embodiments of the present utility model.

Claims

1. An assembled cable trench, comprising a bottom plate (1), side plates (2) arranged above the left and right sides of the bottom plate (1), and a cover plate (7) located at the upper end of the side plates (2), characterized in that: A plurality of spaced-apart vertically arranged wall columns (21) are arranged on the outward side surface of the side panel (2), a plurality of spaced-apart horizontally arranged cross arms (22) are arranged on the surface of the wall columns (21), a cable bracket (3) for carrying cables is provided on the wall columns (21), and the cable bracket (3) is connected to the wall columns (21) via a plurality of first bolts (25), and each of the first bolts (25) passes through the side panel (2).

2. The assembled cable trench according to claim 1, characterized in that: A plurality of cross arms (22) are arranged parallel to each other.

3. The assembled cable trench according to claim 2, characterized in that: The cross arms (22) on the left and right sides of the side plate (2) are symmetrically arranged along the central axis of the cable trench.

4. The assembled cable trench according to claim 1, characterized in that: An embedded pipe (4) is arranged below the cable trench along the length direction, and an opening (12) for the embedded pipe (4) to pass through is provided on the bottom plate (1).

5. The assembled cable trench according to claim 1, characterized in that: A concave-convex fitting snap-fit ​​structure (5) and a connecting structure (6) are provided at the connection between two adjacent side panels (2).

6. The assembled cable trench according to claim 5, characterized in that: The snap-fit ​​structure (5) comprises a raised portion (51) located on one side plate (2) and a recessed portion (52) located on the other side plate (2).

7. The assembled cable trench according to claim 5, characterized in that: The connection structure (6) comprises a connection plate (61) that is in contact with two adjacent side plates (2) and a bolt fastener (62) for fixing the connection plate (61) to the side plates (2).

8. The assembled cable trench according to claim 1, characterized in that: The cross arm (22) is fixedly mounted on the wall column (21) via a plurality of second bolts (26), wherein the second bolts (26) and the first bolts (25) are staggered in the vertical direction.

9. The assembled cable trench according to claim 1, characterized in that: The side panel (2) further comprises a side panel pressure top (23) located at the top end and a side panel wall foot (24) located at the bottom end.

10. The assembled cable trench according to claim 9, characterized in that: The bottom plate (1) and the side plate footing (24) are connected via a plurality of third bolts (11).

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