A post-cast plate belt hoisting mold structure of a fabricated building laminated floor

Abstract

This utility model relates to the technical field of building formwork, and in particular to a post-cast slab structure with suspended formwork for prefabricated building composite floor slabs. It includes horizontal reinforcing bars erected between the top surfaces of two adjacent precast slabs, with connecting bars vertically fixed to the bottom of the horizontal reinforcing bars. A cone is threaded onto the bottom of the connecting bars. A formwork is fitted against the bottom surface of the precast slab, and a threaded rod is vertically inserted into the formwork. The top of the threaded rod is threaded onto the cone, and a pad is fitted onto the bottom of the threaded rod, with a nut threaded onto it. Installation grooves are provided on both sides of the top surface of the formwork along its length, and sealing strips are installed in the grooves, sealingly contacting the bottom surface of the precast slab. During concrete pouring and solidification, if there is a gap between the formwork and the precast slab, the grout is blocked by the sealing strips, thus preventing grout leakage.

Description

Technical Field

[0001] This utility model relates to the technical field of building formwork, and in particular to a prefabricated building composite floor slab post-cast slab with hanging formwork structure. Background Technology

[0002] Currently, composite floor slabs are frequently used in the construction of prefabricated concrete structures. The area between two adjacent prefabricated floor slabs is a post-pouring strip. The construction of the post-pouring strip is carried out after the prefabricated floor slabs are hoisted into place and the elevation is corrected. The post-pouring strip often adopts the suspended formwork construction process, and the reinforcement of the post-pouring strip is tied and the concrete is poured according to the design requirements.

[0003] Related technologies, such as the Chinese utility model patent with announcement number CN209620585U, disclose a prefabricated post-cast strip formwork system. This system is installed in the post-cast strip formed by two adjacent precast composite floor slabs. From bottom to top, it includes a steel reinforcement support, a detachable cone, tie rods, plywood, timber, U-shaped steel bars, and shaped gaskets. The steel reinforcement support includes horizontally arranged transverse bars and vertical connecting bars fixed to the bottom of the transverse bars. The bottom of the vertical connecting bars is fixedly connected to the detachable cone. The top of the tie rod is fixedly connected to the detachable cone, and the bottom passes through the plywood and U-shaped steel bars before being secured with shaped gaskets and nuts. The plywood is horizontally positioned at the bottom of the post-cast strip and supported by several timbers extending along the length of the post-cast strip. The U-shaped steel bars are horizontally supported by the bottom of the timbers, and the shaped gaskets simultaneously support the two side arms of the U-shaped steel bars, achieving an integrated connection of the formwork system.

[0004] After concrete is poured, if the horizontal reinforcement is greatly affected by the formwork and the weight of the concrete, the horizontal reinforcement may bend downward in the middle, resulting in a small gap between the multi-layer board and the precast composite floor slab, which may lead to grout leakage. Alternatively, due to improper manual operation, gaps may appear between the multi-layer board and the precast composite floor slab in the initial state, resulting in grout leakage when pouring concrete later. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the present invention provides a prefabricated building composite floor slab post-cast slab with suspended formwork structure.

[0006] The present invention provides a prefabricated building composite floor slab post-cast slab with suspended formwork structure, which adopts the following technical solution:

[0007] A prefabricated building composite floor slab post-cast slab with suspended formwork structure includes horizontal reinforcement bars erected between the top surfaces of two adjacent precast slabs, with connecting bars vertically fixed to the bottom of the horizontal reinforcement bars, and a cone threaded onto the bottom of the connecting bars. A template is attached to the bottom surface of the precast slab, and a threaded rod is vertically inserted through the template. The top of the threaded rod is threaded onto the cone, and a pad is fitted onto the bottom of the threaded rod and a nut is threaded onto it. Installation grooves are provided on both sides of the top surface of the template along the length direction, and sealing strips are installed in the installation grooves, with the sealing strips in sealing contact with the bottom surface of the precast slab.

[0008] By adopting the above technical solution, if there is a gap between the formwork and the precast slab during the concrete pouring and solidification process, the grout will be blocked by the sealing strip, thus avoiding grout leakage.

[0009] Optionally, the sealing strip includes a strip body and a flange fixed to the top surface of the strip body. The flange extends away from the lead screw and makes sealing contact with the bottom surface of the precast slab.

[0010] By adopting the above technical solution, the flange can effectively block the flow of slurry and has elasticity to ensure sealing.

[0011] Optionally, at least two cantilevered edges are fixedly connected in parallel to the top surface of the main body.

[0012] By adopting the above technical solution, multiple flanges work together to further improve the sealing effect.

[0013] Optionally, several receiving grooves are provided on the top surface of the strip body along the length of the strip body.

[0014] By adopting the above technical solution, the slurry can flow into the receiving tank to relieve the pressure at the seal.

[0015] Optionally, the receiving groove is located on the side of the pick edge near the lead screw.

[0016] By adopting the above technical solution, the slurry is blocked by the lifting edge and can flow into the sealing groove.

[0017] Optionally, the top surface of the base plate is provided with a relief groove for accommodating the downward-pressed edge. The relief groove is located on the side of the mounting groove away from the lead screw and is connected to the mounting groove.

[0018] By adopting the above technical solution, the cantilever edge can be located in the relief groove after being compressed, thereby further improving the sealing between the template and the precast slab.

[0019] Optionally, the mounting groove is set along the entire length of the base plate.

[0020] By adopting the above technical solution, it is convenient to install or disassemble and replace the sealing strip.

[0021] Optionally, the sealing strip can be made entirely of rubber in a strip-like structure.

[0022] By adopting the above technical solution, it is easy to process and manufacture and has good performance.

[0023] In summary, this utility model has at least one of the following beneficial technical effects:

[0024] During the concrete pouring and solidification process, if there is a gap between the formwork and the precast slab, the grout is blocked by the sealing strip, thus preventing grout leakage.

[0025] The flange effectively blocks the flow of slurry and is elastic to ensure a tight seal.

[0026] The slurry can flow into the receiving tank to relieve pressure at the seal. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the hanging mold structure according to an embodiment of the present utility model.

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0029] Figure 3 This is a schematic diagram of the sealing strip according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Precast slab; 2. Horizontal rib; 20. Height adjustment rib; 3. Connecting rib; 4. Template; 40. Base plate; 400. Mounting groove; 401. Clearance groove; 41. Longitudinal rib; 42. Transverse rib; 5. Screw rod; 6. Cone; 7. Pad; 8. Nut; 9. Sealing strip; 90. Strip body; 900. Receiving groove; 91. Cantilever edge. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 The present invention will be described in further detail below.

[0032] This utility model discloses a prefabricated building composite floor slab post-cast slab structure with suspended formwork. (Refer to...) Figure 1 A prefabricated building composite floor slab post-cast strip with suspended formwork structure is set between two adjacent precast slabs 1. The space between the two adjacent precast slabs 1 is used to form a post-cast strip. The suspended formwork structure includes a horizontal bar 2 erected between the top surfaces of the two precast slabs 1. A height adjustment bar 20 is placed between the horizontal bar 2 and the precast slab 1.

[0033] Reference Figure 1A connecting rib 3 is vertically fixed to the bottom surface of the middle part of the horizontal rib 2. A template 4 is set below the two precast slabs 1. The template 4 includes a base plate 40 for fitting the bottom surface of the precast slab 1. The bottom surface of the base plate 40 is fixed with longitudinal ribs 41 and transverse ribs 42 arranged in a grid pattern. In this embodiment, the template 4 is an aluminum alloy template.

[0034] Reference Figure 1 A lead screw 5 is vertically threaded through the base plate 40. A cone 6 is threaded to the bottom of the connecting rib 3. The top of the lead screw 5 is threaded to the cone 6. A pad 7 is fitted at the bottom of the lead screw 5. The top surface of the pad 7 contacts the longitudinal rib 41 and the transverse rib 42. A nut 8 is provided below the pad 7. The nut 8 is threaded to the lead screw 5.

[0035] Reference Figures 1-3 The bottom plate 40 has mounting grooves 400 on both sides of the top surface along the length direction. A sealing strip 9 is detachably embedded in the mounting groove 400. The sealing strip 9 is made of rubber and is in sealing contact with the bottom surface of the precast plate 1. The sealing strip 9 includes a strip body 90. Two rows of receiving grooves 900 are provided on the strip body 90 along the length direction. Two cantilever edges 91 are fixed to the top surface of the strip body 90 along the length direction. The cantilever edges 91 extend away from the lead screw 5 and are used to contact the precast plate 1.

[0036] Reference Figure 2 and Figure 3 Each column of receiving grooves 900 corresponds one-to-one with each lifting edge 91, and the receiving groove 900 is located on the side of the lifting edge 91 closer to the lead screw 5. The top surface of the base plate 40 is provided with a relief groove 401, which is located on the side of the mounting groove 400 away from the lead screw 5 and is connected to the mounting groove 400. The relief groove 401 is used to accommodate the lifting edge 91 after it is pressed down.

[0037] The implementation principle of a prefabricated building composite floor slab post-cast slab with suspended formwork in this embodiment of the utility model is as follows: After the prefabricated slab 1 is hoisted and stabilized, the connecting rib 3 is screwed onto the cone 6, then the horizontal rib 2 is placed, and the screw rod 5 is screwed onto the cone 6. The template 4 is set to fit against the bottom surface of the prefabricated slab 1 and passes through the screw rod 5. Then the template 4 is fixed by the pad 7 and the nut 8. The height of the horizontal rib 2 can be adjusted by the height adjustment rib 20.

[0038] During the concrete pouring and solidification process, if there is a gap between the formwork 4 and the precast slab 1, the grout will be blocked and flow into the receiving groove 900 due to the two cantilevered edges 91 forming two barriers, thereby avoiding grout leakage. The sealing strip 9 can be detachably installed in the installation groove 400 for easy assembly or disassembly and replacement. The formwork 4 and the sealing strip 9 can be reused multiple times.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A prefabricated building composite floor slab post-cast slab structure with suspended formwork, characterized in that: The system includes horizontal reinforcing bars (2) erected between the top surfaces of two adjacent precast slabs (1), with connecting bars (3) vertically fixed at the bottom of the horizontal reinforcing bars (2), and a cone (6) threaded at the bottom of the connecting bars (3). A template (4) is attached to the bottom surface of the precast slab (1), with a threaded rod (5) vertically threaded through the template (4). The top of the threaded rod (5) is threaded onto the cone (6), and a pad (7) is fitted at the bottom of the threaded rod (5) and a nut (8) is threaded onto it. Installation grooves (400) are provided on both sides of the top surface of the template (4) along the length direction. A sealing strip (9) is installed in the installation groove (400), and the sealing strip (9) is in sealing contact with the bottom surface of the precast slab (1). The sealing strip (9) includes a strip body (90) and a flange (91) fixed to the top surface of the strip body (90). The flange (91) extends away from the lead screw (5) and makes sealing contact with the bottom surface of the precast plate (1).

2. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to claim 1, characterized in that: The top surface of the main body (90) has at least two cantilevered edges (91) fixed in parallel.

3. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to claim 1, characterized in that: Several receiving slots (900) are provided on the top surface of the main body (90) along the length of the main body (90).

4. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to claim 3, characterized in that: The receiving groove (900) is located on the side of the lifting edge (91) near the lead screw (5).

5. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to claim 1, characterized in that: The top surface of the base plate (40) is provided with a relief groove (401) for accommodating the downward-pressed edge (91). The relief groove (401) is located on the side of the mounting groove (400) away from the lead screw (5) and is connected to the mounting groove (400).

6. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to any one of claims 1-5, characterized in that: The mounting groove (400) is set along the length of the base plate (40).

7. The prefabricated building composite floor slab post-cast slab with suspended formwork structure according to any one of claims 1-5, characterized in that: The sealing strip (9) is a strip structure made of rubber.

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