Foldable assembly type steel grating cover plate

Abstract

The utility model belongs to the field of constructional engineering, and particularly discloses a foldable assembly type steel grating cover plate which comprises two pieces of supporting angle steel, a plurality of folding vertical plates are arranged between the two pieces of supporting angle steel through rotating hinges, every two folding vertical plates are connected through rotating hinges, supporting rods are arranged between the supporting angle steel, and the supporting rods are connected with the folding vertical plates through rotating hinges. The supporting rod is matched with the folding vertical plate; the cover plate can be assembled and used at any time, is small in component weight and light in weight, can be overhauled and replaced at any time, and can be reassembled and used after being disassembled and recycled, so that the construction cost and the maintenance cost are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering, and specifically relates to a foldable assembled steel grating cover. Background Technology

[0002] Currently, commonly used walkway slabs or opening covers are typically made of steel, and there are two main methods. One method uses patterned steel plates as the surface layer, with flat steel ribs at the bottom, and angle steel or channel steel for reinforcement around the edges. The covers are then directly spliced ​​and laid at the opening after processing. The other method uses prefabricated steel grating, cut to the opening dimensions and laid directly. The grating is perforated, preventing dust accumulation on the top surface, and the structural and surface layers are integrated, providing inherent structural strength. Both types of covers can withstand the load of pedestrian traffic, but they share common drawbacks. First, once the covers are processed to the opening dimensions, their size is fixed and cannot be changed. If the opening dimensions change, the processed covers must be discarded. Second, covers are typically processed and used only once, making recycling and reuse difficult. Third, traditional covers are not truly prefabricated steel structures; they need to be fabricated as a whole in the factory and then installed on-site. Components cannot be disassembled and reassembled on-site, resulting in poor flexibility. Utility Model Content

[0003] The purpose of this utility model is to provide a foldable prefabricated steel grating cover that can adjust the length of the cover within a certain size range, flexibly adapt to the paving of openings of different sizes, and has the advantages of prefabricated steel structure. It can meet different usage needs through "few components and multiple combinations" and can be disassembled and replaced or recycled and reassembled for use at any time.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A foldable, prefabricated steel grating cover includes two supporting angle steels, and a plurality of foldable upright plates are provided between the two supporting angle steels by a rotatable hinge. The plurality of foldable upright plates are connected in pairs by rotatable hinges. A strut is provided between the supporting angle steels, and the strut cooperates with the foldable upright plates.

[0006] Preferably, the folding upright plate is provided with slots, and the support rod passes through the slots on the folding upright plate and is connected to the supporting angle steel.

[0007] Preferably, the support rod is provided with a spiral sleeve.

[0008] Preferably, the rotating hinge has a meshing tooth at its middle position, an adjusting screw is provided on the rotating hinge, and a spring washer is provided at the contact section between the adjusting screw and the rotating hinge.

[0009] The beneficial effects of this utility model are as follows:

[0010] (1) The device described in this utility model is different from the traditional steel cover plate. This cover plate has foldable characteristics and the length of the cover plate is variable, which can meet the laying of openings within a certain size range. The length of the cover plate can be adjusted within a certain range according to the size of the opening.

[0011] (2) This type of cover plate uses prefabricated components, which do not require welding operations. The installation is simple and quick. The components can be transported directly to the site for simple assembly and use.

[0012] (3) This type of cover plate is assembled from multiple components, which has the advantages of a prefabricated structure with fewer components and more combinations. Prefabricated components of various specifications can be processed and assembled as needed.

[0013] (4) This type of cover plate is ready to use immediately after installation. The components are small and lightweight, and can be inspected and replaced at any time. After disassembly and recycling, it can be reassembled and used, which effectively reduces construction and maintenance costs. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Top view;

[0016] Figure 3 This is a schematic diagram of the folding upright panel structure;

[0017] Figure 4 This is a schematic diagram of the rotating hinge in its fixed state;

[0018] Figure 5 This is a schematic diagram of the rotating hinge in its rotatable state;

[0019] Figure 6 This is a schematic diagram of the strut structure;

[0020] In the diagram: 1. Supporting angle steel, 2. Folding upright plate, 3. Rotating hinge, 4. Support rod, 5. Slot, 7. Spiral sleeve, 8. Engaging teeth, 9. Spring washer, 10. Adjusting screw. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] like Figure 1-6The foldable prefabricated steel grating cover shown includes two supporting angle steels 1. The specifications of the supporting angle steels 1 need to be determined through stress calculations. The supporting angle steels 1 are used to secure the cover at the edge of the opening. The side length of the angle steel should meet the minimum support length of the component. In actual use, edge guard angle steel is usually set at the edge of the opening, which works better when used in conjunction with the supporting angle steels. Several folding upright plates 2 are installed between the two supporting angle steels 1 through a rotating hinge 3. The thickness, width, and specifications of the folding upright plates 2 need to be determined by calculation based on the load they bear. To reduce their own weight and allow the struts to pass through, slots are opened in the middle of each plate of the folding upright plates. The plates and struts together form a load-bearing structure to bear the load. Several folding upright plates 2 are connected in pairs through rotating hinges 3. Stirring rods 4 are provided between the supporting angle steels 1, and the struts 4 cooperate with the folding upright plates 2. The folding upright plate 2 has a slot 5. The strut 4 passes through the slot 5 on the folding upright plate 2 and is connected to the supporting angle steel 1. The strut 4 can fix the supporting angle steel 1 and the folding upright plate 2, and can form a load-bearing structure together with the folding upright plate 2 to bear the load of the cover plate.

[0023] The support rod 4 is equipped with a spiral sleeve 7. By rotating the spiral sleeve 7 on the support rod 4, the length of the support rod 4 can be adjusted to complete the assembly of the entire cover plate.

[0024] The rotating hinge 3 has a meshing tooth 8 at the middle position and an adjusting screw 10 on it. A spring washer 9 is provided at the contact section between the adjusting screw 10 and the rotating hinge 3. The rotating hinge 3 connecting the plates of the folding upright plate 2 can be locked by the meshing tooth 8. When the end adjusting screw 10 is loosened, the adjacent plates of the folding upright plate 2 can rotate relative to each other through the rotating hinge 3, which can realize the stretching adjustment of the entire folding upright plate 2 and change the length of the cover plate. When the end adjusting screw 10 of the rotating hinge 3 is tightened, the plates of the folding upright plate 2 are locked and fixed under the combined action of the spring washer 9 and the meshing tooth 8, and can no longer be folded.

[0025] In use, first, perform stress calculations based on the load to determine the specifications and dimensions of the supporting angle steel 1, folding upright plate 2, rotating hinge 3, and strut 4; determine the width and length of a single cover plate based on the opening dimensions, select suitable combination components of supporting angle steel 1, folding upright plate 2, rotating hinge 3, and strut 4, and complete the processing in the factory; during on-site installation, first install the folding upright plate 2 on the supporting angle steel 1, and pass the telescopic strut 4 through the slots 5 in the middle of each plate of the folding upright plate 2; loosen the adjusting screws 10 of the rotating hinge 3, stretch the folding upright plate 2 to a suitable length according to the opening dimensions, paying attention to evenly adjusting the angles of the plates on both sides of the rotating hinge, and then tighten the screws. Adjust the screw 10 at the end of the movable hinge 3 to tighten the rotating hinge 3. At this time, the folding upright plate 2 is fixed and cannot be stretched anymore. Rotate the spiral sleeve 7 of the support rod 4 to adjust the length of the support rod 4 and complete the assembly of the entire cover plate. Place the cover plate at the opening, and adjust and check the tightness of the rotating hinge 3, the support rod 4 and the overlap of the supporting angle steel 1 again to complete the installation of a single cover plate. Use the same steps to splice other cover plates, and then assemble them at the opening to complete the operation. When it is necessary to remove the cover plate, the area around the opening must be protected in advance. Remove the cover plate to a safe location. All components can be removed in reverse order. The removed cover plate components can be recycled and reused.

[0026] The key point of this invention is:

[0027] 1. Folding panels can change the length of the cover by folding the panels, meeting the needs of different opening sizes and improving the flexibility and applicability of the cover.

[0028] 2. The rotating hinge can lock the plates by adjusting the screws at the ends, enabling both rotation and locking of all plates on the folding upright, which is beneficial for the safe use of the folding upright.

[0029] 3. The supporting angle steel is simple and practical, and can effectively transfer the load of the cover plate to the edge components of the opening.

[0030] 4. The cover plate components can be standardized, providing conditions for the reusability of components and giving full play to the structural advantages of prefabricated structures of "few specifications and many combinations".

Claims

1. A foldable, prefabricated steel grating cover, characterized in that: It includes two supporting angle steels (1), and a number of folding upright plates (2) are provided between the two supporting angle steels (1) through a rotating hinge (3). The number of folding upright plates (2) are connected to each other through rotating hinges (3). A strut (4) is provided between the supporting angle steels (1), and the strut (4) cooperates with the folding upright plates (2).

2. The foldable, as-fitted steel grating cover according to claim 1, characterized in that: The folding upright plate (2) is provided with a slot (5), and the support rod (4) passes through the slot (5) on the folding upright plate (2) and is connected to the supporting angle steel (1).

3. The foldable, as-fitted steel grating cover according to claim 1, characterized in that: The strut (4) is provided with a spiral sleeve (7).

4. The foldable, as-fitted steel grating cover according to claim 1, characterized in that: The rotating hinge (3) has a meshing tooth (8) at the middle position, and an adjusting screw (10) is provided on the rotating hinge (3). A spring washer (9) is provided at the contact section between the adjusting screw (10) and the rotating hinge (3).

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