Urban foundation pit blasting protection plate

Abstract

The utility model provides an urban foundation pit blasting protection plate which comprises a framework, a plurality of supporting plates, a plurality of supporting plates and a plurality of supporting plates, the framework comprises a frame body and a plurality of reinforcing beams arranged in the frame body, and two ends of each reinforcing beam are fixed on the frame body; the blasting cover plates are all arranged on the framework, the hollow opening of the frame body is fully paved with the blasting cover plates, and each blasting cover plate is fixedly connected with at least two reinforcing beams; and the lifting lug is arranged on the framework. The urban foundation pit blasting protection plate is simple and reliable in structure, low in cost, convenient to machine, manufacture and use, and beneficial to reduction of construction cost and guarantee of construction safety.

Description

Technical Field

[0001] The utility model relates to the field of construction technology, in particular to the field of urban foundation pit blasting protection. Background Art

[0002] During the foundation pit construction of underground projects such as subways, there are many blasting operations. When blasting is carried out in urban foundation pit construction, flying rocks can easily injure pedestrians and vehicles. At present, the protective measures for such urban foundation pit blasting operations usually involve placing steel plates, wooden boards and other plates on the supports of the first pit to cover the pit mouth. Non-metallic plates such as wooden boards and plastic boards are not strong enough and can be easily penetrated by flying rocks or air pressure generated by blasting. Since the pit mouth of the first pit is large in size, if steel plates and other metal plates are used for blasting protection, the steel plates require a thicker thickness to meet the requirement of not deforming during use, and the cost is relatively high. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide an urban foundation pit blasting protection plate which is simple to process, easy to use and helps to reduce construction costs.

[0004] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0005] A city foundation pit blasting protection plate, comprising:

[0006] The frame comprises a frame body and a plurality of reinforcing beams arranged in the frame body, and both ends of each reinforcing beam are fixed to the frame body;

[0007] A plurality of explosion-proof boards are arranged on the frame and cover the hollow opening of the frame together, and each explosion-proof board is fixedly connected to at least two of the reinforcement beams;

[0008] The lifting lug is arranged on the frame.

[0009] Preferably, the frame is formed by splicing a plurality of steel sections.

[0010] Preferably, the frame body comprises an outer frame and an inner frame beam, the outer frame is rectangular, the inner frame beam is parallel to the short side of the outer frame and two ends of the inner frame beam are respectively fixed to the two long sides of the outer frame.

[0011] Preferably, the reinforcement beam is parallel to the short side of the outer frame and two ends of the reinforcement beam are respectively fixed on two long sides of the outer frame.

[0012] Preferably, the reinforcing beam is a steel bar.

[0013] Preferably, the blast plate is a steel plate.

[0014] Preferably, the reinforcing beam is integrally welded and fixed on the blast board.

[0015] Preferably, there are multiple hanging ears, which are dispersedly arranged on the frame.

[0016] Preferably, the outer surface of the explosion-proof board is provided with a waterproof layer and a reflective strip.

[0017] The beneficial effects of the utility model are as follows: the city foundation pit blasting protection plate can provide a firm structural support by utilizing a frame and a reinforcing beam; the blasting plate can effectively prevent deformation of the blasting plate and improve the impact resistance of the blasting plate by fixed connection with the reinforcing beam; and a plurality of smaller blasting plates are used to lay a frame, which can effectively reduce the material cost of the blasting plate; when in use, the city foundation pit blasting protection plate can be directly placed on the supporting beam of the first passage of the foundation pit by utilizing the lifting ears to cover the pit mouth; after the construction is completed, the city foundation pit blasting protection plate can also be removed by utilizing the lifting ears for subsequent construction use; thus, the city foundation pit blasting protection plate has a simple and reliable structure, low cost, is easy to process and manufacture and use, and helps to reduce construction costs and ensure construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is an application schematic diagram of a preferred embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the top view of the structure of the preferred embodiment of the utility model;

[0021] Figure 3 It is a cross-sectional view of a preferred embodiment of the utility model in a side view direction;

[0022] Figure 4 It is a cross-sectional view of the preferred embodiment of the utility model in the main viewing direction.

[0023] Among them, the reference numerals in the figure are:

[0024] 11. Frame; 111. External frame; 112. Internal frame beam; 12. Reinforcement beam; 20. Blasting board; 30. Lifting lug; 41. Support beam; 42. Auxiliary beam. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 4 A preferred embodiment of the utility model is a city foundation pit blasting protection plate, comprising: a skeleton, comprising a frame 11 and a plurality of reinforcing beams 12 arranged in the frame 11, both ends of each reinforcing beam 12 are fixed to the frame 11; a plurality of blasting boards 20, all of which are arranged on the skeleton and cover the hollow opening of the frame 11 together, and each blasting board 20 is fixedly connected to at least two reinforcing beams 12 respectively; and a lifting lug 30, which is arranged on the skeleton. The urban foundation pit blasting protection plate can provide a firm structural support by using a frame and a reinforcing beam 12. The blasting plate 20 can effectively prevent the blasting plate 20 from being deformed and improve the impact resistance of the blasting plate 20 by being fixedly connected to the reinforcing beam 12. A plurality of smaller blasting plates 20 are used to lay a frame, which can effectively reduce the material cost of the blasting plate 20. When in use, the urban foundation pit blasting protection plate can be directly placed on the first supporting beam 41 of the foundation pit by using the lifting lug 30 to cover the pit mouth. After the construction is completed, the urban foundation pit blasting protection plate can also be removed by using the lifting lug 30 for subsequent construction use. Therefore, the urban foundation pit blasting protection plate has a simple and reliable structure, low cost, and is easy to process and manufacture and use, which helps to reduce construction costs and ensure construction safety.

[0029] When the spacing between the support beams 41 of the foundation pit is smaller than the length of the frame 11, the blasting protection plate of the city's foundation pit can be directly placed on the support beams 41 of the foundation pit. When the pit mouth of the foundation pit is larger and the spacing between the support beams 41 of the foundation pit is larger, the auxiliary beams 42 can be fixedly installed between the support beams 41, and then the blasting protection plate of the city's foundation pit can be placed on the auxiliary beams 42.

[0030] As a preferred embodiment of the utility model, it may also have the following additional technical features:

[0031] In this embodiment, the frame 11 is made of multiple steel sections, which is easy to obtain in the construction environment, and has low cost, strong structure, and is easy to process and manufacture. In this embodiment, the frame 11 is welded from multiple I-shaped steel sections, which is not easy to loosen or damage. In other embodiments, the frame 11 can also be made of other suitable materials, and the fixing method between the various parts of the frame 11 can also be screw connection, bonding and other suitable connection methods, but is not limited to this. .

[0032] In this embodiment, the frame 11 includes an outer frame 111 and an inner frame beam 112. The outer frame 111 is rectangular, the inner frame beam 112 is parallel to the short side of the outer frame 111, and the two ends of the inner frame beam 112 are respectively fixed on the two long sides of the outer frame 111. The frame 11 has a regular shape and a firm structure, which is convenient for closely arranging multiple foundation pit blasting protection panels to cover large-sized pit openings, and is also convenient for processing and manufacturing. In other embodiments, according to construction needs, the frame 11 can also adopt any other required shapes such as round, hexagonal, etc., and is not limited to this.

[0033] In this embodiment, the reinforcing beam 12 is parallel to the short side of the outer frame 111 and the two ends of the reinforcing beam 12 are respectively fixed to the two long sides of the outer frame 111, which is conducive to reducing the size of the reinforcing beam 12, facilitating material collection and processing, and also conducive to improving the structural strength. In other embodiments, the arrangement of the reinforcing beam 12 can also be flexibly adjusted as needed, and is not limited thereto.

[0034] In this embodiment, the reinforcing beam 12 is a steel bar, which has a strong structure, low cost, and is easy to obtain and process from construction materials. In other embodiments, the reinforcing beam 12 can also be made of other common materials such as steel bars, steel sections, etc., but is not limited to this.

[0035] In this embodiment, the blast board 20 is a steel plate, which can provide higher impact resistance and is safer and more reliable. In other embodiments, the blast board 20 can also be made of other suitable materials such as wood boards as needed, but is not limited to this.

[0036] In this embodiment, the reinforcing beam 12 is integrally welded and fixed on the quilt board 20, which can increase the fixing area between the reinforcing beam 12 and the quilt board 20, minimize the deformation of the quilt board 20, improve the impact resistance of the quilt board 20, and improve the protection effect. In other embodiments, the reinforcing beam 12 can also be fixedly connected to the quilt board 20 by other suitable fixing methods, and is not limited thereto.

[0037] In this embodiment, there are multiple lifting ears 30, which are dispersedly arranged on the frame, so that it is convenient to carry and place the urban foundation pit blasting protection plate.

[0038] In this embodiment, a waterproof layer and a reflective strip are provided on the outer surface of the blasting board 20. The waterproof layer can slow down the rust or corrosion of the blasting board 20 and extend its service life. The reflective strip can be easily identified, which is conducive to ensuring construction safety. The waterproof layer can be covered on the blasting board 20 by means of paint, waterproof film, etc., and the reflective strip is widely used and will not be described in detail here.

[0039] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0040] The above description is only a preferred implementation mode of the present utility model. Any technical solution that achieves the purpose of the present utility model by basically the same means belongs to the protection scope of the present utility model.

Claims

1. A city foundation pit blasting protection plate, characterized in that: include: A skeleton, comprising a frame (11) and a plurality of reinforcing beams (12) arranged in the frame (11), wherein both ends of each reinforcing beam (12) are fixed to the frame (11); A plurality of explosion-proof boards (20) are arranged on the frame and cover the hollow opening of the frame (11) together, and each explosion-proof board (20) is fixedly connected to at least two of the reinforcing beams (12); A lifting lug (30) is arranged on the frame.

2. The urban foundation pit blasting protection plate according to claim 1 is characterized in that: The frame (11) is formed by splicing a plurality of steel sections.

3. The urban foundation pit blasting protection plate according to claim 1 is characterized in that: The frame body (11) comprises an outer frame (111) and an inner frame beam (112); the outer frame (111) is rectangular; the inner frame beam (112) is parallel to the short side of the outer frame (111); and two ends of the inner frame beam (112) are respectively fixed to the two long sides of the outer frame (111).

4. The urban foundation pit blasting protection plate according to claim 3 is characterized in that: The reinforcing beam (12) is parallel to the short side of the outer frame (111), and two ends of the reinforcing beam (12) are respectively fixed on the two long sides of the outer frame (111).

5. The urban foundation pit blasting protection plate according to claim 1, characterized in that: The reinforcing beam (12) is a steel bar.

6. The urban foundation pit blasting protection plate according to claim 5, characterized in that: The blasting plate (20) is a steel plate.

7. The urban foundation pit blasting protection plate according to claim 6, characterized in that: The reinforcing beam (12) is integrally welded and fixed on the blast board (20).

8. The urban foundation pit blasting protection plate according to claim 1, characterized in that: The number of the hanging ears (30) is plural and they are dispersedly arranged on the frame.

9. The urban foundation pit blasting protection plate according to claim 1, characterized in that: The outer surface of the explosion-proof board (20) is provided with a waterproof layer and a reflective strip.

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