Rapid installation protection device for foundation pit concrete supporting beam

Abstract

The utility model belongs to the field of foundation pit construction safety, and particularly relates to a foundation pit concrete supporting beam rapid installation protection device which comprises protection net fences and an inverted-U-shaped steel plate, the protection net fences are symmetrically welded to the two sides of the upper surface of the inverted-U-shaped steel plate, and a protection plate is arranged between top transverse rods of the protection net fences on the two sides. A plurality of inverted-U-shaped steel bars are evenly welded to the upper surfaces of top cross rods of the protective net fences on the two sides and located above the protective plate. Lifting rings are welded to the two ends of the top transverse rod. The protection device is of an integrated structure, installation is easy and fast, meanwhile, detachment is easy and fast, and the construction efficiency is improved; the protection plate is arranged at the top of the protection device, the hidden danger that people are hurt by objects falling from high altitudes is eliminated, meanwhile, the protection plate can shade sun and rain, and good construction conditions are provided for workers.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit construction safety, and in particular relates to a quick installation protection device for foundation pit concrete support beams. Background Art

[0002] The subway foundation pit is generally supported by bored cast-in-place piles plus internal supports. Due to the deepness of the subway foundation pit, in order to prevent the prestressed steel support from relaxing, the first support is usually a concrete support beam. When the foundation pit is very deep, the second support is sometimes also a concrete support beam. For construction safety, safety guardrails need to be installed on the concrete support beams. The traditional method is to drill holes in the concrete support beams to install safety guardrails. This method not only destroys the concrete support beam structure, but also has a cumbersome installation process and low installation efficiency. To address this situation, there are now some punch-free protective devices. For example, an inverted U-shaped steel plate is clamped on the concrete support beam at intervals, and then a safety guardrail is installed between the inverted U-shaped steel plates. Although this method is much more efficient than the traditional method, it still requires the gradual assembly of the safety guardrail's horizontal bars, vertical bars, protective nets and other components.

[0003] Furthermore, current safety guardrails only provide protection on the sides, lacking top protection. If multiple concrete support beams are used, the lower concrete support beams present a potential safety hazard of falling objects injuring people. To further improve the efficiency and safety of safety guardrails, a more user-friendly and secure guardrail is needed. Summary of the Invention

[0004] The problem to be solved by the present invention is to overcome the deficiencies of the background technology and provide a quick installation protective device for foundation pit concrete support beams.

[0005] The present invention is achieved through the following technical solutions:

[0006] A quick-install protective device for foundation pit concrete support beams, comprising a protective mesh and an inverted U-shaped steel plate, wherein the width of the inverted U-shaped steel plate is equal to the width of the concrete support beam, and an anti-slip pad is provided on the upper surface of the inverted U-shaped steel plate; protective meshes are symmetrically welded on both sides of the upper surface of the inverted U-shaped steel plate, and the length of the protective mesh is equal to the length of the inverted U-shaped steel plate; a protective plate is provided between the top cross bars of the protective mesh on both sides, and a number of inverted U-shaped steel bars are evenly welded between the upper surfaces of the top cross bars of the protective mesh on both sides along the length direction of the top cross bars, and the inverted U-shaped steel bars are located above the protective plate; and lifting rings are welded at both ends of the top cross bar.

[0007] Preferably, a plurality of support rods are provided on the lower surface of the protective plate, and both ends of the support rods are respectively fixed to the top cross bars on both sides.

[0008] Preferably, the side panels of the inverted U-shaped steel plate are 50-70 cm high.

[0009] Preferably, the spacing between the inverted U-shaped steel bars is 5-10 cm.

[0010] Preferably, the inverted U-shaped steel plate has a thickness of 2-5 mm.

[0011] The protective device structure of the present invention is an integrated structure, which is simple and quick to install and disassemble, and greatly improves the construction efficiency; a protective plate is provided on the top of the protective device of the present invention, which eliminates the hidden danger of falling objects from high altitude injuring people, and the protective plate can provide sun and rain protection, providing good construction conditions for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the installation state of this embodiment;

[0013] Figure 2 This is a schematic diagram of the side view of the structure of the embodiment in the installed state;

[0014] Figure 3 This is a schematic diagram of the overall structure of this embodiment;

[0015] Figure 4 This is a schematic diagram of the upper structure of the top protective plate of this embodiment;

[0016] Figure 5 This is a schematic diagram of the lower structure of the top protective plate in this embodiment.

[0017] In the figure, 1 is a protective fence, 2 is an inverted U-shaped steel plate, 3 is a top cross bar, 4 is an inverted U-shaped steel bar, 5 is a protective plate, 6 is a lifting ring, 7 is a support rod, 8 is an anti-slip pad, and 9 is a concrete support beam. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0019] This embodiment includes an inverted U-shaped steel plate 2, the width of which is equal to the width of the concrete support beam 9, and the inverted U-shaped steel plate 2 is used to be clamped on the concrete support beam 9. Preferably, the side plate height of the inverted U-shaped steel plate 2 is 50-70 cm, and the thickness of the inverted U-shaped steel plate 2 used is 2-5 mm. The two side plates of the inverted U-shaped steel plate 2 can be slightly deformed so that they can be better clamped together with the concrete support beam 9. An anti-slip pad 8 is provided on the upper surface of the inverted U-shaped steel plate 2 for workers to walk on, and an anti-slip structure such as an anti-slip strip can also be provided on it. A protective fence 1 is symmetrically welded on both sides of the upper surface of the inverted U-shaped steel plate 2. The length of the protective fence 1 is equal to the length of the inverted U-shaped steel plate 2. The protective fence 1 includes horizontal and vertical railings for support and a protective net. The protective fence 1 is a commonly used protective fence 1 for concrete support beams 9, which will not be described here.

[0020] A protective plate 5 is provided between the top crossbars 3 of the protective net fence 1 on both sides of the inverted U-shaped steel plate 2. The protective plate 5 not only eliminates the safety hazard of falling objects from high altitude, but also has the effect of shading and protecting from rain, providing a good construction environment for workers. A number of inverted U-shaped steel bars 4 are welded between the upper surfaces of the top crossbars 3 of the protective net fence 1 on both sides of the inverted U-shaped steel plate 2. The inverted U-shaped steel bars 4 are evenly arranged along the length direction of the top crossbar 3. Preferably, the spacing between the inverted U-shaped steel bars 4 is 5-10 cm. The inverted U-shaped steel bars 4 are located above the protective plate 5. The inverted U-shaped steel bars 4 are used to protect the protective plate 5 from being damaged when the protective device is installed and to bear the pressing force from the installation equipment.

[0021] The top crossbar 3 of the inverted U-shaped steel plate 2 is welded with lifting rings 6 at both ends, which are used to lift the protective device of the present invention. Preferably, a plurality of support rods 7 are provided on the lower surface of the protective plate 5, and the ends of the support rods 7 are respectively fixed to the top crossbar 3 on both sides, so that the support rods 7 play a supporting role for the protective plate 5.

[0022] During installation, use lifting equipment to lift the device to the concrete support beam 9 through the lifting ring 6, and manually assist in the installation and positioning. Let the inverted U-shaped steel plate 2 be aligned with the concrete support beam 9 and slightly pressed down to be stuck on the concrete support beam 9. Then use equipment near or inside the foundation pit to gently press down the top inverted U-shaped steel bar 4 so that the inverted U-shaped steel plate 2 is completely stuck on the concrete support beam 9. The excavator bucket can be used to press down, or other equipment can be used to press down. The same method continues to install the device of the present invention in sequence. Several inverted U-shaped steel plates 2 are placed together to form a continuous protective fence 1, and a continuous protective plate 5 is formed on the top. The device of the present invention is directly installed as a whole without the need for drilling, welding, binding and other processes, which improves the installation efficiency of the protective device. It can still be directly lifted away during disassembly, and is much faster than the removal of traditional guardrails.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-install protective device for foundation pit concrete support beams, comprising a protective fence (1) and an inverted U-shaped steel plate (2), characterized in that: The width of the inverted U-shaped steel plate (2) is equal to the width of the concrete support beam (9), and an anti-slip pad (8) is provided on the upper surface of the inverted U-shaped steel plate (2); protective fences (1) are symmetrically welded on both sides of the upper surface of the inverted U-shaped steel plate (2), and the length of the protective fences (1) is equal to the length of the inverted U-shaped steel plate (2); a protective plate (5) is provided between the top cross bars (3) of the protective fences (1) on both sides, and a plurality of inverted U-shaped steel bars (4) are evenly welded between the upper surfaces of the top cross bars (3) of the protective fences (1) on both sides along the length direction of the top cross bars (3), and the inverted U-shaped steel bars (4) are located above the protective plate (5); and lifting rings (6) are welded to both ends of the top cross bar (3).

2. The quick installation protection device for foundation pit concrete support beams according to claim 1 is characterized in that: A plurality of support rods (7) are provided on the lower surface of the protective plate (5), and both ends of the support rods (7) are respectively fixed to the top cross bars (3) on both sides.

3. The quick installation protection device for foundation pit concrete support beams according to claim 1 is characterized in that: The side panels of the inverted U-shaped steel plate (2) have a height of 50-70 cm.

4. The quick installation protection device for foundation pit concrete support beams according to claim 1 is characterized in that: The spacing between the inverted U-shaped steel bars (4) is 5-10 cm.

5. The quick installation protection device for foundation pit concrete support beams according to claim 1 is characterized in that: The inverted U-shaped steel plate (2) has a thickness of 2-5 mm.

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