Fabricated hollow floor system
By using positioning components in hollow core slabs, including upper guide rails, lower guide rails, pins, and nuts, the problems of inaccurate core mold binding and time-consuming and labor-intensive processes were solved, achieving accurate positioning and fixing of the core mold and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC SHANGHAI DREDGING CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-05
AI Technical Summary
In the current construction of hollow core slab floors, the core mold binding is inaccurate and the operation is time-consuming and labor-intensive, which increases the labor intensity of the workers.
The positioning components, including upper and lower guide rails, are used to accurately position and fix the core mold through the cooperation of pins and nuts, simplifying the operation process.
This method enables accurate positioning and fixing of the core mold, reducing operation time and labor intensity, and improving construction efficiency.
Smart Images
Figure CN224200117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hollow floor slab technology, specifically a prefabricated hollow floor slab. Background Technology
[0002] Prefabricated hollow core slabs are a type of building structure that combines prefabricated components with hollow core slab technology. Its core principle is to reduce concrete usage by creating hollow openings within the slab, while simultaneously improving construction efficiency through prefabricated construction methods.
[0003] Because existing hollow core concrete floor slab technology uses core molds to form holes, during construction, several core mold arrays need to be placed between two layers of steel mesh, and each core mold is tied and fixed with steel wire. In actual operation, construction personnel cannot accurately grasp the spacing between two adjacent core molds, and the overall operation during the tying process is time-consuming and labor-intensive, increasing the labor intensity of workers. Therefore, it is necessary to provide a prefabricated hollow core slab to solve the above problems. Utility Model Content
[0004] In view of the shortcomings of the prior art, this utility model provides a prefabricated hollow floor slab, which solves the problems mentioned in the background.
[0005] This utility model provides the following technical solution: a prefabricated hollow floor slab, including a prefabricated floor slab body, with connecting steel bars arranged around the perimeter of the prefabricated floor slab body, and a positioning component arranged inside the prefabricated floor slab body, with a core mold arranged on the positioning component.
[0006] The positioning component includes an upper guide rail and a lower guide rail, which are parallel and opposite to each other, and the core mold is disposed between the upper guide rail and the lower guide rail.
[0007] Preferably, the positioning component further includes a perforated lug, a limiting stop, and a pin. The upper guide rail and the lower guide rail are provided with several strip-shaped openings at equal intervals, and the perforated lug is fixedly disposed at both ends of the strip-shaped openings.
[0008] Preferably, the pin is rotatably disposed at both ends of the limiting stop, and the front end of the outer surface of the pin is provided with an external thread.
[0009] Preferably, the front end of the pin is threaded with a nut via an external thread, and the limiting stop is rotatably connected to the perforated lug via the pin.
[0010] Preferably, both the upper and lower guide rails are provided with clearance slots that cooperate with the nut components.
[0011] Preferably, the core mold has a limiting groove at the center of both the upper and lower surfaces.
[0012] Preferably, the upper guide rail and the lower guide rail are provided with pads on their opposite ends.
[0013] Preferably, both ends of the upper and lower guide rails are provided with support frames via pads.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. This prefabricated hollow floor slab, equipped with positioning components, initially has the limiting brackets in a horizontal state. First, one limiting bracket is lowered, and then the core molds are inserted one by one between the upper and lower guide rails. After each core mold is inserted, the nut at the front end of the limiting bracket is rotated and the pin is removed, allowing the limiting bracket to rotate to a vertical state. The pin removed from the upper guide rail is then passed through the perforated lug on the lower guide rail and the through hole at the lower end of the limiting bracket. Finally, the nut is tightened, ensuring that each core mold is positioned between two limiting brackets, with equal spacing between adjacent core molds and no forward or backward movement. The overall operation is simple, time-saving, and labor-saving.
[0016] 2. This prefabricated hollow floor slab, by opening a limiting slot, can effectively limit the core mold when the protruding parts of the upper and lower guide rails are engaged in the limiting slot, thus preventing the core mold from moving horizontally left and right; by setting a support frame, it can effectively support and fix the upper and lower guide rails. Attached Figure Description
[0017] Figure 1 This is a structural schematic diagram of the prefabricated hollow floor slab body of this utility model;
[0018] Figure 2 This is a schematic diagram of the installation structure of the positioning component and the core mold of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the limiting stop of this utility model when it is in a horizontally retracted state;
[0020] Figure 4 This is a schematic diagram of the structure of the limiting stop of this utility model when it is in the vertical limiting state;
[0021] Figure 5 This is a partial structural schematic diagram of the lower guide rail of this utility model;
[0022] Figure 6 This is a schematic diagram of the core mold of this utility model;
[0023] Figure 7 This utility model Figure 4 An enlarged schematic diagram of the structure at point A in the middle.
[0024] In the diagram: 1. Prefabricated floor slab body; 2. Connecting steel bars; 3. Positioning components; 301. Upper guide rail; 302. Lower guide rail; 303. Strip opening; 304. Lug with holes; 305. Limiting bracket; 306. Pin; 307. Nut; 4. Core mold; 401. Limiting groove; 5. Pad; 6. Support frame. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-7 A prefabricated hollow floor slab includes a prefabricated floor slab body 1, with connecting steel bars 2 arranged around the prefabricated floor slab body 1, and a positioning component 3 arranged inside the prefabricated floor slab body 1, with a core mold 4 arranged on the positioning component 3.
[0027] The positioning component 3 includes an upper guide rail 301 and a lower guide rail 302, which are parallel and opposite to each other. The core mold 4 is disposed between the upper guide rail 301 and the lower guide rail 302.
[0028] The positioning component 3 also includes a perforated lug 304, a limiting stop 305, and a pin 306. Several strip-shaped openings 303 are evenly spaced on the upper guide rail 301 and the lower guide rail 302. The perforated lug 304 is fixedly installed on both ends of the strip-shaped openings 303. The openings 303 and the perforated lug 304 facilitate the installation of the limiting stop 305.
[0029] The pin 306 is rotatably mounted at both ends of the limiting bracket 305. The front end of the outer surface of the pin 306 has an external thread, and a nut 307 is threadedly connected to the front end of the pin 306 via the external thread. The limiting bracket 305 is rotatably connected to a perforated lug 304 via the pin 306. Both the upper guide rail 301 and the lower guide rail 302 have clearance slots that cooperate with the nut 307. Initially, the limiting bracket 305 is in a horizontal state. One limiting bracket 305 is lowered first, and then each one is lowered between the upper guide rail 301 and the lower guide rail 302. Insert the core mold 4. After inserting each core mold 4, rotate the nut 307 located at the front end of the limiting bracket 305 and remove the pin 306, so that the limiting bracket 305 can rotate to a vertical position. Then, the pin 306 removed from the upper guide rail 301 passes through the perforated lug 304 on the lower guide rail 302 and the through hole at the lower end of the limiting bracket 305. Finally, tighten the nut 307 to ensure that each core mold 4 is positioned between two limiting brackets 305, and the distance between two adjacent core molds 4 is equal and they will not move back and forth. The overall operation is simple, time-saving and labor-saving.
[0030] Among them, the core mold 4 has a limiting slot 401 at the center of both the upper and lower surfaces. By opening the limiting slot 401, when the protruding parts of the upper guide rail 301 and the lower guide rail 302 are inserted into the limiting slot 401, the core mold 4 can be effectively limited, preventing the core mold 4 from moving left and right in the horizontal direction.
[0031] Among them, the upper guide rail 301 and the lower guide rail 302 are provided with pads 5 on their opposite ends. Both ends of the upper guide rail 301 and the lower guide rail 302 are provided with support frames 6 through the pads 5. By providing pads 5, it is easy to install support frames 6. By providing support frames 6, the upper guide rail 301 and the lower guide rail 302 can be effectively supported and fixed.
[0032] The working principle is as follows: Initially, the limiting bracket 305 is in a horizontal state. First, one limiting bracket 305 is lowered, and then the core molds 4 are inserted one by one between the upper guide rail 301 and the lower guide rail 302. After each core mold 4 is inserted, the nut 307 located at the front end of the limiting bracket 305 is rotated and the pin 306 is removed, so that the limiting bracket 305 can be rotated to a vertical state. Then, the pin 306 removed from the upper guide rail 301 is passed through the perforated lug 304 on the lower guide rail 302 and the through hole at the lower end of the limiting bracket 305. Finally, the nut 307 is tightened, so that each core mold 4 is between two limiting brackets 305, the distance between two adjacent core molds 4 is equal and they will not move back and forth. The overall operation is simple, time-saving and labor-saving.
[0033] Furthermore, by opening the limiting slot 401, when the protruding parts of the upper guide rail 301 and the lower guide rail 302 are inserted into the limiting slot 401, the core mold 4 can be effectively limited, preventing the core mold 4 from moving left and right in the horizontal direction; by setting the support frame 6, the upper guide rail 301 and the lower guide rail 302 can be effectively supported and fixed.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A prefabricated hollow floor slab, comprising a prefabricated floor slab body (1), characterized in that, The prefabricated floor slab body (1) is provided with connecting steel bars (2) around its perimeter, and a positioning component (3) is provided inside the prefabricated floor slab body (1), and a core mold (4) is provided on the positioning component (3). The positioning component (3) includes an upper guide rail (301) and a lower guide rail (302), the upper guide rail (301) and the lower guide rail (302) are parallel and opposite to each other, and the core mold (4) is disposed between the upper guide rail (301) and the lower guide rail (302); The positioning component (3) also includes a perforated lug (304), a limiting stop (305) and a pin (306). The upper guide rail (301) and the lower guide rail (302) are provided with several strip-shaped openings (303) at equal intervals. The perforated lug (304) is fixedly disposed at both ends of the strip-shaped openings (303). The pin (306) is rotatably disposed at both ends of the limiting stop (305), and the front end of the outer surface of the pin (306) is provided with an external thread; The front end of the pin (306) is connected to a nut (307) via an external thread, and the limiting bracket (305) is rotatably connected to the perforated lug (304) via the pin (306).
2. The prefabricated hollow floor slab according to claim 1, characterized in that, Both the upper guide rail (301) and the lower guide rail (302) are provided with clearance slots that cooperate with the nut (307).
3. The prefabricated hollow floor slab according to claim 1, characterized in that, The core mold (4) has limit slots (401) at the center of both the upper and lower surfaces.
4. A prefabricated hollow floor slab according to claim 1, characterized in that, The upper guide rail (301) and the lower guide rail (302) are both provided with pads (5) on their opposite ends.
5. A prefabricated hollow floor slab according to claim 4, characterized in that, Both ends of the upper guide rail (301) and the lower guide rail (302) are provided with support frames (6) through pads (5).