Protective shed for installation and construction across existing high-speed steel box girder

Abstract

A protective shed for installation and construction across an existing high-speed steel box girder comprises a top support, side supports and a bottom support, the top support, the side supports and the bottom support form a U-shaped frame structure, and the top support is used for being hung on the steel box girder. Fireproof cloth is attached to the outer surfaces of the side supports and the bottom support. A rolling piece is arranged on the top support and used for being connected to the upper end face of the steel box girder in a hung mode and can roll on the upper end face of the steel box girder. The system is simple and easy to implement, convenient to operate and low in construction cost, and temporary management and control of the expressway are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway steel box girder installation, and particularly relates to a protective shed for the installation construction of a steel box girder spanning an existing highway. Background Technique

[0002] When installing a steel box girder spanning an existing highway, measures must be taken to ensure the normal passage of the highway under the steel box girder. During the installation and welding process of the steel box girder, high-temperature small falling objects such as electric welding sparks and welding slag will be generated. To ensure the normal passage of the highway under the steel box girder, most of them are solved by erecting a protective shed above the highway under the steel box girder. This way of erecting a protective shed requires temporary control of the highway, affects the normal passage of the highway, and has complex construction and high construction costs. Therefore, it is of great significance to study a protective shed that is simple, easy to operate, low in construction cost, and avoids temporary control of the highway. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a protective shed for the installation construction of a steel box girder spanning an existing highway, which is simple, easy to operate, low in construction cost, and avoids temporary control of the highway.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A protective shed for the installation construction of a steel box girder spanning an existing highway, including a top support, side supports, and a bottom support. The top support, side supports, and bottom support form a U-shaped frame structure, and the top support is used for hanging on the steel box girder.

[0006] Preferably, fireproof cloth is attached to the outer surfaces of the side supports and the bottom support.

[0007] Preferably, rolling elements are provided on the top support, and the rolling elements are used for hanging on the upper end surface of the steel box girder and can roll on the upper end surface of the steel box girder.

[0008] Preferably, the rolling elements include ear plates connected to the top support, and the ear plates are connected to rollers through pin shafts.

[0009] Preferably, the top support, side supports, and bottom support are detachably connected by bolts, buckles, or connecting pieces.

[0010] The utility model can achieve the following beneficial effects:

[0011] The utility model is simple, easy to operate, low in construction cost, and avoids temporary control of the highway. Brief Description of the Drawings

[0012] The following further illustrates the utility model with reference to the drawings and embodiments:

[0013] Figure 1 This is the structural diagram of the utility model;

[0014] Figure 2 This is the utility model.

[0015] In the figure: steel box girder 1, top support 2, side support 3, bottom support 4, fireproof cloth 5, ear plate 6, ear plate 6, pin shaft 7, roller 8. Specific implementation manner

[0016] The preferred solution is as Figures 1 to 2 shown. A protective shed for the installation construction of a steel box girder across an existing expressway includes a top support 2, a side support 3, and a bottom support 4. The top support 2, the side support 3, and the bottom support 4 form a U-shaped frame structure, and the top support 2 is used for hanging on the steel box girder 1. The top support 2, the side support 3, and the bottom support 4 form a semi-closed protection frame structure, which is equivalent to having an opening at the top of the return frame.

[0017] As a preferred solution, the outer surfaces of the side support 3 and the bottom support 4 are attached with fireproof cloth 5. To reduce the probability of catching fire.

[0018] As a preferred solution, the top support 2 is provided with rolling members, and the rolling members are used for hanging on the upper end surface of the steel box girder 1 and can roll on the upper end surface of the steel box girder 1. The entire protective shed can move on the steel box girder 1.

[0019] The rolling members include ear plates 6 connected to the top support 2, and the ear plates 6 are connected to the rollers 8 through pin shafts 7.

[0020] As a preferred solution, the top support 2, the side support 3, and the bottom support 4 are detachably connected by bolts, buckles or connecting pieces. Facilitating disassembly and installation.

[0021] The working principle of the utility model is as follows:

[0022] 1. The top support 2, the side support 3, and the bottom support 4 are assembled and welded by square tubes; the ear plate 6 is welded to the top support 2;

[0023] 2. The ear plate 6 is welded to the top support 2, and the roller 8 is fixed to the ear plate 6 through the pin shaft 7.

[0024] 3. The top support 2, the side support 3, the bottom support 4, the ear plate 6, the pin shaft 7, and the roller 8 are assembled and welded into a frame in the inner field.

[0025] 4. The movable protective shed is composed of multiple frames (the frame spacing is 1000 mm), and the specific quantity is determined according to the on-site situation, so as to ensure that the movable protective shed can completely cover the expressway under the steel box girder. The frames are fixed by angle steel supports.

[0026] 5. After the erection and positioning of the framework are completed, fix the fireproof cloth 5 to the side support 3 and the bottom support 4 with straps.

[0027] 6. After the steel box girder is completed, the movable protective shed can be moved to the next highway by means of the rollers 8.

[0028] The above embodiments are only the preferred technical solutions of the present utility model and should not be regarded as limitations on the present utility model. The protection scope of the present utility model shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present utility model.

Claims

1. A protective shed for installation and construction across an existing high-speed steel box girder, characterized in that: It comprises a top support (2), a side support (3) and a bottom support (4), wherein the top support (2), the side support (3) and the bottom support (4) form a U-shaped frame structure, and the top support (2) is used to be hung on the steel box girder (1); Fireproof cloth (5) is attached to the outer surfaces of the side support (3) and the bottom support (4).

2. A protective shed for installation and construction across an existing high-speed steel box girder according to claim 1, characterized in that: A rolling member is provided on the top support (2), and the rolling member is used to be hung on the upper end surface of the steel box girder (1) and can roll on the upper end surface of the steel box girder (1).

3. The protective shed for installation and construction across an existing high-speed steel box girder according to claim 1 is characterized by: The rolling element comprises an ear plate (6) connected to the top support (2), and the ear plate (6) is connected to the roller (8) via a pin shaft (7).

4. The protective shed for installation and construction across an existing high-speed steel box girder according to claim 1 is characterized in that: The top support (2), the side support (3) and the bottom support (4) are detachably connected via bolts, buckles or connecting plates.

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