Protective structure in state of hoisting laminated slab

Abstract

The utility model discloses a protection structure in a state of hoisting a laminated slab. The protection structure comprises the laminated slab and a protection plate, wherein reserved reinforcing steel bar bodies are reserved and fixed on the four side surfaces of the laminated slab, and the protection plate is provided with a stuffy insertion hole; the stuffy insertion holes of the protection plates are connected with the reserved reinforcing steel bar bodies of the laminated slabs in an inserted mode, and at the moment, the reserved reinforcing steel bar bodies are located in the stuffy insertion holes and are not exposed and do not stretch out. When the laminated slab is hoisted to the space above the aluminum mold to be touched and controlled by an operation constructor, as the reserved steel bar body is located in the stuffy insertion hole of the protection plate, is not exposed and is not in the stretching-out state, the problem that the reserved steel bar body in the stretching-out state has potential safety hazards to the operation constructor is solved.

Description

Technical Field

[0001] This utility model relates to a protective structure for composite slabs under hoisting conditions, and belongs to the field of composite slab construction technology. Background Technology

[0002] Combining composite slabs with aluminum formwork construction can improve the efficiency of building floor slab construction.

[0003] During the hoisting of composite slabs, because there are pre-reserved steel bars extending outward around the perimeter of the composite slabs (see Chinese Patent Publication No. CN115419257A), workers need to connect them when they are hoisted and lowered onto the aluminum formwork. The pre-reserved steel bars in the extended state pose a safety hazard to the workers. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a protective structure for the state of hoisted composite slabs.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a protective structure for use in the lifting and stacking of slabs, comprising:

[0007] The four sides are reserved with pre-reserved steel reinforcement in the composite plate and the protective plate with the blind insertion hole;

[0008] The plug hole of the protective plate is inserted into the reserved steel bar of the composite plate. At this time, the reserved steel bar is inside the plug hole and is not exposed or protruding.

[0009] The protective plates are four that correspond to the four sides of the composite plate.

[0010] A baffle is rotatably hinged to the protective plate, and the baffle can be rotated inward and outward on the protective plate; the baffle is tightened and bound to the opposite side by straps.

[0011] Both the baffle and the protective board are made of plastic foam board.

[0012] The beneficial effect of this utility model is that when the composite plate is hoisted into the space above the aluminum formwork for the construction workers to access and operate, the reserved steel bars are not exposed and do not protrude because they are inside the concealed insertion holes of the protective plate. This solves the problem that the protruding reserved steel bars pose a safety hazard to the construction workers. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention in the hoisting state;

[0014] Figure 2 This is a structural diagram of the composite plate and protective plate of this utility model during installation;

[0015] Figure 3 This is a schematic diagram showing the contact between the composite plate of this utility model and the universal ball and elastic pad.

[0016] Figure 4 This is a schematic diagram of the structure of the composite plate of this utility model in contact with the universal ball and the elastic pad;

[0017] Figure 5 This is a schematic diagram of the installation structure of the universal ball bearing, elastic pad, and aluminum mold of this utility model;

[0018] In the diagram: 1-Aluminum mold; 2-Support rod; 11-Mounting base; 12-Expansion joint A; 13-Expansion joint B; 14-Universal ball bearing; 15-Elastic pad; 3-Composite plate; 31-Reserved reinforcing steel; 4-Protective plate; 41-Blind insertion hole; 42-Baffle; 43-Binding strap; 5-Hanging chain. Detailed Implementation

[0019] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0020] like Figures 1 to 5 As shown.

[0021] This application discloses a method for constructing prefabricated composite slabs, comprising the following steps.

[0022] Step 1, Aluminum formwork erection: Aluminum formwork 1 is erected with support rods 2. The top support point of support rods 2 rests on the cross intersection of aluminum formwork. An L-shaped mounting base 11 is fixed on aluminum formwork 1. Telescopic components A12 and B13 are installed on mounting base 11. A rotatable universal ball bearing 14 is installed on the top of telescopic component A12. An elastic pad 15 for cushioning is fixed on the top of telescopic component B13. Multiple universal ball bearings 14 can provide multiple points of rotatable support for the composite plate 3 in the later stage. Multiple elastic pads 15 can provide damping cushioning when the composite plate 3 is lowered.

[0023] Step 2, preparation for hoisting the composite slab: Install protective plates 4 made of plastic foam board at the ends of the composite slab 3. The plug holes 41 of the protective plate 4 are inserted into the reserved steel bars 31, so that the reserved steel bars 31 are completely inside the plug holes 41 of the protective plate 4 and not exposed. The baffles 42 made of plastic foam board on the protective plate 4 are rotated and erected. The baffles 42 are relatively fixed to each other by the binding straps 43. The four baffles 42 protect the four sides of the composite slab 3. At this time, a protective structure is presented in the state of hoisting the composite slab. At this time, the debris on the composite slab 3 that has not been cleaned can be limited and protected by the four baffles 42, so as to prevent the debris from falling from the height during the subsequent hoisting. The hoisting chain 5 is fixedly connected to the composite slab 3.

[0024] Step 3, composite slab hoisting: The tower crane lifts the composite slab 3 from the construction site using the lifting chain 5, and then rotates it to the corresponding position above the aluminum formwork 1. The tower crane lowers the composite slab 3. When the composite slab 3 is lowered to a position that the construction workers can reach and control, the reserved steel reinforcement 31 is not exposed because it is inside the plug hole 41 of the protective plate 4.

[0025] As the composite slab 3 continues to descend, the telescopic component B13, carrying the elastic pad 15, rises above the aluminum formwork 1. The bottom of the composite slab 3 contacts the elastic pad 15, which is higher than the aluminum formwork 1. The bottom of the composite slab 3 is cushioned by the multiple elastic pads 15 as it descends. The lifting chain 5 and the protective plate 4 are removed. The telescopic component A12, carrying the universal ball 14, rises and pushes against the composite slab 3, causing the composite slab 3 to disengage from the elastic pad 15. The composite slab 3 rolls and adjusts on the universal ball 14. After aligning the reserved steel bars 31 of the adjacent composite slab 3, the telescopic component A12, carrying the universal ball 14... As the composite plate 3 descends, it comes into contact with the universal ball bearing 14 and the elastic pad 15, forming a support structure that allows for adjustable alignment after the composite plate is placed. Then, the telescopic component A12, carrying the universal ball bearing 14, continues to descend and detaches from the bottom surface of the composite plate 3 until the elastic pad 15 supports the composite plate 3. At this point, the universal ball bearing 14 is lower than the aluminum mold 1. Then, by controlling the telescopic component B13, the elastic pad 15 slowly descends, ensuring that the composite plate 3 and the aluminum mold 1 are installed without strong impact. The mounting base 11, along with the telescopic components A12 and B13, is removed from the aluminum mold 1.

[0026] Repeat steps two and three to install multiple composite plates 3 on the aluminum mold 1.

[0027] The aforementioned adjustable alignment support structure for composite slabs includes:

[0028] Mounting base 11 is used to detachably fix to aluminum mold 1 by bolts, etc. Mounting base 11 is fixed with telescopic components A12 and B13. The top of telescopic component A12 is equipped with a rotatable universal ball 14. The top of telescopic component B13 is fixed with an elastic pad 15 that provides cushioning. The universal ball 14 and the elastic pad 15 contact the support plate 3.

[0029] When the telescopic component A12 descends with the universal ball bearing 14 and detaches from the bottom surface of the composite plate 3, the elastic pad 15 supports the composite plate 3, and the universal ball bearing 14 is lower than the aluminum mold 1. Then, by controlling the telescopic component B13 to slowly descend with the elastic pad bearing 15 to a position lower than the top surface of the aluminum mold 1, the composite plate 3 is installed with the aluminum mold 1 without strong impact under the support of the elastic pad bearing 15. This solves the problem of strong impact installation when the composite plate is lowered instantaneously with a certain height distance from the aluminum mold.

[0030] The aforementioned protective structure for use in the hoisting and stacking of slabs includes:

[0031] The composite plate 3 has pre-reserved steel bars 31 on its four sides, and a protective plate 4 with a closed insertion hole 41. The protective plate 4 consists of four plates corresponding to the four sides of the composite plate 3. The closed insertion hole 41 of the protective plate 4 is inserted into the pre-reserved steel bars 31 of the composite plate 3. At this time, the pre-reserved steel bars 31 are inside the closed insertion hole 41 and are not exposed or protruding.

[0032] When the composite slab 3 is hoisted to the space above the aluminum formwork 1 for the workers to access and operate, the reserved steel bars 31 are not exposed and do not protrude because they are inside the plug hole 41 of the protective plate 4. This solves the problem that the reserved steel bars in the protruding state pose a safety hazard to the workers.

[0033] A baffle 42 is rotatably hinged to the protective plate 4, and the baffle 42 can be rotated inward and outward on the protective plate 4; the baffle 42 is tightened and bound in opposite directions by straps 43.

Claims

1. A protective structure for use in the case of hoisted composite slabs, characterized in that, The four sides are reserved with pre-reserved steel bars (31) and the protective plate (4) is provided with a plug hole (41); The plug hole (41) of the protective plate (4) is inserted into the reserved steel bar (31) of the composite plate (3). At this time, the reserved steel bar (31) is inside the plug hole (41) and does not protrude.

2. The protective structure in the state of hoisted composite slabs as described in claim 1, characterized in that: The protective plates (4) are four that correspond to the four sides of the composite plate (3).

3. The protective structure in the state of hoisted composite slabs as described in claim 1, characterized in that: A baffle (42) is rotatably hinged to the protective plate (4), and the baffle (42) can be rotated inward and outward on the protective plate (4); the baffle (42) is tightened and bound in opposite directions by straps (43).

4. The protective structure in the state of hoisted composite slabs as described in claim 1, characterized in that: Both the baffle (42) and the protective board (4) are made of plastic foam board.

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