Grounding flat iron fixing device for comprehensive pipe gallery

Abstract

The utility model discloses a grounding flat iron fixing device for a utility tunnel, which comprises an expansion screw rod, the expansion screw rod is inserted into an insertion hole formed in concrete on the side wall of the utility tunnel, and an expansion sleeve is arranged in the insertion hole and is matched with the expansion screw rod in an insertion manner; the outward end of the expansion screw rod is connected with a nut; the supporting mechanism comprises a bottom piece, an opening is formed in the surface of the bottom piece, an expansion screw penetrates through the opening to fix the bottom piece to the side wall of the pipe gallery, a bracket of a bent structure is connected to one side of the bottom piece and forms a Y-shaped support structure with the bottom piece, a threaded hole is formed in the surface of the bracket, and an adjusting bolt is in threaded connection in the threaded hole. The device solves the problem that the grounding flat iron is inconvenient to install and adjust in the prior art, and has the characteristics of being convenient to disassemble and assemble and capable of avoiding punching on the grounding flat iron body.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal utility tunnel construction, and particularly relates to a fixing device for earthing flat steel used in a utility tunnel. Background Art

[0002] A utility tunnel is an integrated space set in underground pipelines in a city and is also a tunnel space set underground. Gas, heating, communication, electricity, etc. can be concentrated in this building. There are also special inspection openings, hoisting openings and monitoring systems, realizing the unified design and maintenance in the city. The earthing system of the utility tunnel adopts a common earthing body. The earthing body uses the main steel bars on the outer side of the utility tunnel structure as the natural earthing body, and is connected into a whole through the longitudinally arranged earthing flat steel in the utility tunnel, the embedded earthing flat iron and the main steel bars.

[0003] The existing installation process of earthing flat iron is to punch holes in advance on the earthing flat iron and tighten and fix it through the screws embedded in the side wall of the tunnel. This installation process has the following disadvantages: the spacing and straightness requirements of each embedded screw are strict, and the allowable deviation in operation is small; it is difficult to align the hole positions on the earthing flat iron with the screw positions, often resulting in re-punching of the earthing flat iron, and it is difficult to adjust the straightness of the installation of the earthing flat iron. Repeated punching affects the appearance and the construction quality is poor. Therefore, it is necessary to design a fixing device for earthing flat steel used in a utility tunnel to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a fixing device for earthing flat steel used in a utility tunnel. This device solves the problem that the installation and adjustment of the existing earthing flat iron are inconvenient, and has the characteristics of convenient disassembly and assembly, and can avoid punching on the earthing flat iron body.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a fixing device for earthing flat steel used in a utility tunnel, including an expansion screw, the expansion screw is inserted into a jack opened in the concrete of the side wall of the tunnel, and an expansion sleeve is installed in the jack and is inserted and matched with the expansion screw; one end of the expansion screw facing outwards is connected with a nut; the support mechanism includes a bottom plate, an opening is formed on the surface of the bottom plate, and the expansion screw passes through the opening to fix the bottom plate on the side wall of the tunnel.

[0006] Preferably, a bracket with a bent structure is connected to one side of the bottom plate to form a Y-shaped bracket structure with the bottom plate.

[0007] Preferably, a threaded hole is formed on the surface of the bracket, and an adjusting bolt is threadedly connected in the threaded hole.

[0008] Furthermore, the expansion screw is an M10 screw and is fastened in the concrete of the side wall of the tunnel through the action of the expansion sleeve.

[0009] Further, the grounding flat iron is installed inside the Y-shaped bracket. By turning the adjusting bolt, its feeding amount is adjusted so that the head of the adjusting bolt presses the grounding flat iron against the inner wall of the Y-shaped bracket to achieve fixation.

[0010] The beneficial effects of a grounding flat iron fixing device for an integrated pipe gallery provided by the present utility model are as follows:

[0011] This device can save manpower during the installation process of the grounding flat iron. This structure does not require drilling holes in the grounding flat iron, avoiding the limitation of the grounding flat iron position adjustment by the drilling positions, making the leveling process flexible and fast, with a reasonable structure. The supporting mechanism prevents the grounding flat iron from loosening and falling, and the fastening mechanism is used for pressing and fixing, avoiding drilling holes in the grounding flat iron, increasing the installation aesthetics, and at the same time avoiding damaging the galvanized layer of the grounding flat iron due to drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] In the figure: negative film 1, bracket 2, adjusting bolt 3, expansion screw 4, expansion sleeve 5, nut 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] As shown in Figure 1 , a grounding flat iron fixing device for an integrated pipe gallery includes an expansion screw 4. The expansion screw 4 is inserted into a jack formed in the concrete of the side wall of the pipe gallery, and an expansion sleeve 5 is installed in the jack and is inserted and matched with the expansion screw 4; one end of the expansion screw 4 facing outwards is connected with a nut 6; the supporting mechanism includes a negative film 1, and an opening is formed on the surface of the negative film 1. The expansion screw 4 passes through the opening to fix the negative film 1 on the side wall of the pipe gallery.

[0016] Preferably, a bracket 2 with a bent structure is connected to one side of the negative film 1, and the negative film 1 and the bracket 2 form a Y-shaped bracket structure.

[0017] Preferably, a threaded hole is formed on the surface of the bracket 2, and an adjusting bolt 3 is threadedly connected in the threaded hole.

[0018] Further, the expansion screw 4 is an M10 screw and is fastened in the concrete of the side wall of the pipe gallery through the action of the expansion sleeve 5.

[0019] Further, the grounding flat iron is installed inside the Y-shaped bracket. By turning the adjusting bolt 3, its feeding amount is adjusted so that the head of the adjusting bolt 3 presses the grounding flat iron against the inner wall of the Y-shaped bracket to achieve fixation.

[0020] The working principle of the present utility model is as follows:

[0021] During use, the ground flat iron is arranged longitudinally along the entire length of the pipe gallery and is welded to the grounding steel plate reserved in the sidewall concrete. The grounding steel plate is reliably welded to two steel bars not less than Φ16 in the concrete sidewall, and a longitudinal bar grounding equipotential ring is set at a certain distance interval; before installing the ground flat iron, first fix this device on the sidewall concrete of the pipe gallery at a certain distance and height, turn the adjusting bolt 3 backward to leave an installation space, then place the ground flat iron on the supporting mechanism of the Y-shaped structure, check the position of the ground flat iron with a laser level and guide the leveling. After the entire section of the ground flat iron is leveled, fix the ground flat iron by tightening the adjusting bolt 3.

Claims

1. A grounding flat iron fixing device for an integrated pipe gallery, characterized in that: It includes an expansion screw (4), the expansion screw (4) is inserted into a jack formed in the concrete of the side wall of the pipe gallery, and an expansion sleeve (5) is installed in the jack and is in plug-in fit with the expansion screw (4); one end of the expansion screw (4) facing outward is connected with a nut (6); the support mechanism includes a bottom plate (1), the surface of the bottom plate (1) is provided with an opening, and the expansion screw (4) passes through the opening to fix the bottom plate (1) on the side wall of the pipe gallery.

2. The earthing flat iron fixing device for an integrated pipe gallery according to claim 1, characterized in that: One side of the bottom plate (1) is connected with a bracket (2) with a bent structure, and the bottom plate (1) and the bracket (2) form a Y-shaped support structure.

3. The earthing flat iron fixing device for an integrated pipe gallery according to claim 2, characterized in that: The surface of the bracket (2) is provided with a threaded hole, and an adjusting bolt (3) is threadedly connected in the threaded hole.

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