Electric movable multifunctional protective shed for deep and large foundation pit in complex environment

Abstract

The utility model discloses an electric movable type multifunctional protective shed for a deep and large foundation pit in a complex environment, and relates to the technical field of constructional engineering protective equipment. According to the protective shed, a plurality of arc-shaped upper chord beam trusses are connected through top connecting beams and bottom longitudinal beams to form a space structure, triangular web member systems are arranged between the trusses to enhance the shear resistance, steel plates are laid on the top to form an anti-impact protective layer, and arc-shaped upper chord beams with downward concave surfaces are adopted to optimize a load transmission path; the lower chord beam integrated spraying system achieves dust raising control, and stiffening rib plates are arranged at the joints to improve the connection reliability. The brake pulleys at the bottoms of the longitudinal beams are matched with the pre-embedded rails, so that the protective shed can accurately move in a narrow foundation pit environment, and the rail system is of a multi-layer welding structure composed of channel steel, I-shaped steel and pre-embedded steel plates. The device has the advantages of being rapid in assembly, dynamic, stable, capable of preventing dust, cooling, hard in protection and the like, and effectively solves the problem of moving protection of the deep and large foundation pit under complex working conditions.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering protection equipment, specifically relating to an electric mobile multi-functional protective shed for deep foundation pits in complex environments. Background Technology

[0002] In the construction of deep foundation pits in complex environments, especially in engineering scenarios involving rock blasting (such as densely built-up areas, environmentally sensitive areas, and coastal areas prone to typhoons), traditional protective structures face severe challenges. On the one hand, shallow rock blasting operations easily generate high-speed flying rocks, posing a threat to the safety of surrounding buildings, transportation facilities, and personnel. Coastal areas are frequently hit by typhoons, and conventional protective sheds are insufficient in wind resistance, posing a risk of structural instability. In existing technologies, foundation pit protection mostly adopts fixed steel sheds or temporary covering measures, which have insufficient structural strength, are unable to withstand the impact loads of blasting and the effects of typhoons, are prone to deformation or overturning, and have poor mobility and adaptability. Traditional protective structures require repeated disassembly and assembly, resulting in low construction efficiency and increased costs. Utility Model Content

[0003] The purpose of this invention is to provide an electrically operated, mobile, multi-functional protective shed for deep foundation pits in complex environments, in order to solve the problem that the existing technology has insufficient structural strength and cannot resist the impact load of blasting during foundation pit construction and typhoons.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides an electric mobile multi-functional protective shed for deep foundation pits in complex environments, comprising several trusses, the top of which is connected by several connecting beams, the top of which is covered with a steel plate, and the bottom of both ends of which are connected by longitudinal beams.

[0006] The truss includes an upper chord beam, which is arc-shaped. Several vertical bars are installed on the concave side of the upper chord beam, and the other end of each vertical bar is connected to a lower chord beam. Diagonal bars are installed between the vertical bars.

[0007] In a further technical solution, a spray system is installed at the bottom of the lower chord beam.

[0008] In a further technical solution, stiffening ribs are provided at the connection points between the longitudinal beam and the truss.

[0009] In a further technical solution, a brake pulley is provided at the bottom of the connection position between the longitudinal beam and the truss.

[0010] In a further technical solution, the brake pulley runs on a track base.

[0011] In a further technical solution, the track foundation includes a channel steel with the opening facing upwards. An I-beam is welded to the bottom of the channel steel, and several embedded steel plates are welded to the bottom of the I-beam. The embedded steel plates are embedded in the concrete beam.

[0012] Beneficial effects:

[0013] This utility model adopts a truss structure with an arc-shaped upper chord beam and diagonal bracing, combined with a top steel plate cover, to form a layered impact-resistant system that can effectively absorb the kinetic energy of flying rocks from blasting and reduce the risk of flying rocks penetrating. The whole structure is made of steel, and its own weight can withstand typhoon weather. Attached Figure Description

[0014] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0015] Figure 1 A schematic diagram of the structure of an electrically operated mobile multifunctional protective shed for deep foundation pits in complex environments provided by an embodiment of this utility model;

[0016] Figure 2 A side view of an electrically operated, mobile, multi-functional protective shed for deep foundation pits in complex environments, provided as an embodiment of this utility model;

[0017] Figure 3 A schematic diagram of the track foundation structure of an electrically operated mobile multifunctional protective shed for deep foundation pits in complex environments, provided for an embodiment of this utility model;

[0018] Figure 4 A side view of the track foundation of an electrically operated mobile multifunctional protective shed for deep foundation pits in complex environments, provided as an embodiment of this utility model.

[0019] in:

[0020] 1. Truss; 2. Connecting beam; 3. Steel plate; 4. Longitudinal beam; 5. Sprinkler system; 6. Brake pulley; 7. Track foundation; 101. Top chord beam; 102. Vertical member; 103. Bottom chord beam; 104. Diagonal member; 401. Stiffening rib; 701. Channel steel; 702. I-beam; 703. Embedded steel plate; 704. Concrete beam. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example:

[0023] like Figures 1 to 4 As shown, this utility model embodiment provides an electrically operated, mobile, multi-functional protective shed for deep foundation pits in complex environments, comprising several trusses 1. The tops of the trusses 1 are connected by several connecting beams 2. The tops of the trusses 1 are covered with steel plates 3, and their bottom ends are connected by longitudinal beams 4. Each truss 1 includes an upper chord beam 101, which is arc-shaped. Several vertical rods 102 are installed on the concave side of the upper chord beam 101. The other end of each vertical rod 102 is connected to a lower chord beam 103. Diagonal braces 104 are installed between the vertical rods 102.

[0024] This utility model embodiment arranges multiple trusses 1 horizontally in parallel at the top of a deep foundation pit, with several connecting beams 2 bolted to the top of each truss 1 for horizontal connection. This design allows for rapid assembly to form an integral structure, adapting to complex terrain. A steel plate 3 is laid on top as a protective layer, providing hard protection against impact and falling objects. The bottom is connected to both ends of the truss 1 by longitudinal steel beams, forming a stable spatial structure, enhancing overall rigidity, and ensuring structural stability during movement. An arc-shaped upper chord beam 101 with the concave surface facing down optimizes the load transfer path and improves bending resistance. Vertically welded, equally spaced vertical rods 102 are welded and fixed at their lower ends to a straight lower chord beam 103. Diagonal support rods are welded between adjacent vertical rods 102 to form a triangular stable unit. The vertical rods 102 and the diagonal rods 104 form the web system of the truss 1, reducing self-weight while enhancing shear resistance.

[0025] In one feasible implementation scheme, such as Figure 1 As shown, a sprinkler system 5 is installed at the bottom of the lower chord beam 103. By installing the sprinkler system 5 at the bottom of the lower chord beam 103, dust in the foundation pit is suppressed, meeting the requirements for environmentally friendly construction. In summer, the sprinkler system can reduce the temperature inside the shed and improve the working environment. The integrated design with the protective shed avoids additional space occupation.

[0026] In one feasible implementation scheme, such as Figure 1 As shown, a stiffening rib 401 is provided at the connection position between the longitudinal beam 4 and the truss 1. By welding triangular stiffening ribs 401 to the connection nodes at the ends of the longitudinal beam 4 and the truss 1, and fully welding the edges of the ribs to the web of the longitudinal beam 4 and the truss 1, local deformation caused by stress concentration at the nodes is prevented, the connection reliability between the truss 1 and the longitudinal beam 4 is improved, the dynamic load during movement is adapted, and the fatigue life of key nodes is extended.

[0027] In one feasible implementation scheme, such as Figure 2As shown, a brake pulley 6 is provided at the bottom of the connection position between the longitudinal beam 4 and the truss 1. By installing the brake pulley 6 at the bottom of the longitudinal beam 4, the protective canopy can be accurately moved. The brake pulley 6 can be quickly locked on slopes or in emergencies to prevent slippage and adapt to the movement needs of narrow spaces at the edge of the foundation pit.

[0028] In one feasible implementation scheme, such as Figures 2 to 4 As shown, the brake pulley 6 runs on the track base 7. By placing the brake pulley 6 on the track base 7, the brake pulley 6 can move in a specified direction, preventing deviation.

[0029] In one feasible implementation scheme, such as Figure 3 and Figure 4 As shown, the track foundation 7 includes a channel steel 701 with its opening facing upwards. An I-beam 702 is welded to the bottom of the channel steel 701, and several embedded steel plates 703 are welded to the bottom of the I-beam 702. These embedded steel plates 703 are embedded within the concrete beam 704. By embedding the embedded steel plates 703 before pouring the concrete beam 704, welding the lower end of the I-beam 702 to the embedded steel plates 703, fully welding the upper flanges of the channel steel 701 and the I-beam 702, coating the entire track with an anti-rust coating, and enhancing the anchoring force of the I-beam 702 to prevent track overturning, the multi-layer welded structure improves the track's compressive and torsional resistance. The pre-embedded components within the concrete beam 704 reduce subsequent reinforcement costs and extend the track's service life.

[0030] The electric mobile multi-functional protective shed for deep foundation pits in complex environments provided in this embodiment of the utility model first involves pre-embedding steel plates 703 on the top of concrete beams 704 on both sides of the deep foundation pit. I-beams 702 are then vertically welded to the upper surface of the pre-embedded steel plates 703. Channel steel 701 with an upward-facing opening is welded to the top of the I-beams 702 to form a track foundation 7, ensuring that the axis of the channel steel 701 is parallel to the long side of the foundation pit. A truss unit 1 is then hoisted above the track. The truss 1 uses an arc-shaped upper chord beam 101, with vertical members 102 welded at equal intervals in the concave direction. The lower ends of the vertical members 102 are welded to the straight lower chord beam 103 to form a standard span. Adjacent vertical members 102 are connected by diagonal members 104 to form a triangular web system, completing a single truss. 1. After installation, the transverse connecting beam 2 is fixed to the top of the upper chord beam 101 of the adjacent truss 1 using high-strength bolts. After connecting several trusses 1 into a whole, steel plates 3 are fully laid on the upper part and fixed with fasteners. Longitudinal beams 4 are welded to the lower part of both ends of the truss 1. Triangular stiffening ribs 401 are welded to the inner side of the connection node between the longitudinal beam 4 and the truss 1 and fixed with continuous welds. Spraying system 5 is installed at the bottom of the lower chord beam 103 and arranged at intervals along the beam length. Finally, pulleys with braking function are installed at the bottom of the longitudinal beam 4. The pulleys are embedded in the prefabricated track channel steel 701 and the braking response time is adjusted. After the overall installation is completed, no-load walking test and impact load test are carried out to verify whether the movement synchronization, structural stability and impact resistance of the protective shed meet the design requirements.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electrically operated, mobile, multi-functional protective shed for deep foundation pits in complex environments, characterized in that: It includes several trusses (1), the top of the trusses (1) is connected by several connecting beams (2), the top of the trusses (1) is covered with steel plates (3), and the bottom of the two ends of the trusses (1) are connected by longitudinal beams (4); The truss (1) includes an upper chord beam (101), which is arc-shaped. Several vertical rods (102) are installed on the concave side of the upper chord beam (101). The other end of the vertical rods (102) is connected to a lower chord beam (103). Diagonal rods (104) are installed between the vertical rods (102).

2. The electrically operated mobile multi-functional protective shed for deep foundation pits in complex environments as described in claim 1, characterized in that: A spray system (5) is installed at the bottom of the lower chord beam (103).

3. The electric mobile multifunctional protective shed for deep foundation pit in complex environment according to claim 1, characterized in that: The longitudinal beam (4) is provided with stiffening ribs (401) at the connection position with the truss (1).

4. The electric mobile multifunctional protective shed for deep foundation pit in complex environment according to claim 1, characterized in that: A brake pulley (6) is provided at the bottom of the connection position between the longitudinal beam (4) and the truss (1).

5. The electric mobile multifunctional protective shed for deep foundation pit in complex environment according to claim 4, characterized in that: The brake pulley (6) runs on the track foundation (7).

6. The electric mobile multifunctional protective shed for deep foundation pit in complex environment according to claim 5, characterized in that: The track foundation (7) includes a channel steel (701) with the opening facing upward. An I-beam (702) is welded to the bottom of the channel steel (701). Several embedded steel plates (703) are welded to the bottom of the I-beam (702). The embedded steel plates (703) are embedded in the concrete beam (704).

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