Prefabricated composite floor slab post-cast strip supporting device

Abstract

The utility model discloses a prefabricated composite floor slab post-cast strip supporting device which comprises a prefabricated composite floor slab body and a post-cast strip, a supporting formwork body is attached to and supported on the lower surface of the prefabricated composite floor slab body, and transverse supporting ribs are arranged on the lower surface of the supporting formwork body. A longitudinal supporting rib is fixed to the lower surface of the transverse supporting rib, a C-shaped sliding fit clamping base is slidably connected to the outer surface of the longitudinal supporting rib, a threaded supporting rod is fixedly connected to the lower surface of the C-shaped sliding fit clamping base, and the outer surface of the threaded supporting rod is sleeved with a telescopic supporting sleeve body. The lower surface of the telescopic supporting sleeve body is fixedly connected with a supporting base, the outer surface of the threaded supporting rod is in threaded connection with a nut, a supporting formwork body structure is arranged at the bottom of the prefabricated composite floor slab body and the bottom of the post-cast strip, supporting assemblies are installed through a sliding fit structure, the supporting assemblies can be arranged at multiple points, and the bottom can be stably supported; and during bottom supporting, the mechanism is simple, and the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of post-cast strip support devices for precast composite floor slabs, and more specifically, to a post-cast strip support device for precast composite floor slabs. Background Technology

[0002] Composite floor slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs have good integrity, and the upper and lower surfaces of the slab are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity.

[0003] A post-cast strip is a concrete strip left at corresponding locations in foundation slabs, walls, and beams during building construction to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement. It is installed according to design or construction specifications. The post-cast strip temporarily divides the structure into several parts. After a period of internal shrinkage, the concrete at this construction joint is poured to connect the structure into a whole. The pouring time for the post-cast strip should preferably be when the temperature is low. Cement or concrete with a trace amount of aluminum powder can be used, and its strength grade should be one level higher than that of the structural member to prevent cracks from forming between the old and new concrete, creating weak points. The placement of the post-cast strip should also consider the consumption factors of different formwork and other measures. Gaps between composite floor slabs require post-cast strip pouring after installation. Existing support structures often use expansion joints, which are loose, cumbersome to install, unstable, and require significant manpower for dismantling and installation, resulting in low efficiency.

[0004] In the prior art, such as application publication number CN115559319A, this invention relates to the field of post-cast strip support technology, specifically an adjustable and recyclable post-cast strip support device. The post-cast strip support device includes a post-cast strip assembly and a support assembly. The beneficial effects are: by setting a support device with a support frame and a lifting assembly, multiple sets of sealing side plates can be connected through the support frame, achieving unified installation and disassembly, which greatly improves the efficiency of installation support. At the same time, the lifting assembly is used to realize the synchronous lateral compression and fixation of multiple sets of sealing side plates, which greatly reduces the number of installations. In addition, with the screw threaded in, the height is fixed, achieving the purpose of fixing the lateral compression force and maintaining stable compression support.

[0005] In the aforementioned patent, built-in support components are used for side plate support. However, during the pouring process, it is a one-piece pouring, and the built-in support components are poured together. This makes it inconvenient to support the bottom of the post-pouring strip in the precast floor slab gaps, and the bottom cannot be stably supported. Furthermore, it is inconvenient to disassemble, the mechanism is complex, and the cost is high. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a support device for the post-pouring strip of precast composite floor slabs. By setting a support template main structure at the bottom of the precast composite floor slab body and the post-pouring strip, and installing support components through a sliding fit structure, support components can be set at multiple points, providing stable support at the bottom, and is easy to assemble and disassemble. The bottom support mechanism is simple and low in cost.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A support device for post-cast strips in precast composite floor slabs includes a precast composite floor slab body and a post-cast strip. A support template body is attached to and supports the lower surface of the precast composite floor slab body. A transverse support rib is provided on the lower surface of the support template body. A longitudinal support rib is fixed to the lower surface of the transverse support rib. A C-shaped sliding bracket is slidably connected to the outer surface of the longitudinal support rib. A threaded support rod is fixedly connected to the lower surface of the C-shaped sliding bracket. A telescopic support sleeve body is sleeved on the outer surface of the threaded support rod. A support base is fixedly connected to the lower surface of the telescopic support sleeve body. A nut is threadedly connected to the outer surface of the threaded support rod. By setting the support template body structure at the bottom of the precast composite floor slab body and the post-cast strip, and installing the support components through the sliding structure, multiple support components can be set. The bottom can provide stable support, and the assembly and disassembly are convenient. The bottom support mechanism is simple and low in cost.

[0009] Furthermore, the lower surface of the nut presses against the upper surface of the telescopic support sleeve body.

[0010] Furthermore, the longitudinal support rib adopts a convex strip structure, and the inner surface of the C-shaped sliding mounting bracket is slidably sleeved on the outer surface of the longitudinal support rib.

[0011] Furthermore, a triangular support rib is fixedly connected at the connection between the support base and the telescopic support sleeve body, and the triangular support rib is evenly distributed on a ring of the outer surface of the support base and the telescopic support sleeve body.

[0012] Furthermore, the transverse support ribs are evenly distributed on the lower surface of the support template body.

[0013] Furthermore, the longitudinal support ribs are distributed on the left and right sides of the lower surface of the transverse support ribs.

[0014] Furthermore, the support base is a circular base, which is welded and fixed to the lower surface of the telescopic support sleeve body.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) By setting the main structure of the support template at the bottom of the precast composite floor slab and the post-pouring strip, the support components can be installed through the sliding structure. The support components can be set at multiple points, and the bottom can be stably supported. It is also easy to disassemble and assemble. The bottom support mechanism is simple and the cost is low. Attached Figure Description

[0017] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 4 This is a partial structural diagram of the main body of the support template of this utility model;

[0021] Figure 5 This is a schematic diagram showing the distribution relationship between the threaded support rod and the telescopic support sleeve of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Precast composite floor slab main body, 2. Post-pouring strip, 3. Support formwork main body, 4. Horizontal support bar, 5. Longitudinal support bar, 6. C-shaped sliding bracket, 7. Threaded support rod, 8. Telescopic support sleeve main body, 9. Support base, 10. Nut, 11. Triangular support bar plate. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Please see Figure 1-5A support device for post-cast strips of precast composite floor slabs includes a precast composite floor slab body 1 and a post-cast strip 2. A support template body 3 is attached to and supports the lower surface of the precast composite floor slab body 1. A transverse support rib 4 is provided on the lower surface of the support template body 3. A longitudinal support rib 5 is fixed on the lower surface of the transverse support rib 4. A C-shaped sliding bracket 6 is slidably connected to the outer surface of the longitudinal support rib 5. A threaded support rod 7 is fixedly connected to the lower surface of the C-shaped sliding bracket 6. A telescopic support sleeve body 8 is sleeved on the outer surface of the threaded support rod 7. A support base 9 is fixedly connected to the lower surface of the telescopic support sleeve body 8. A nut 10 is threadedly connected to the outer surface of the threaded support rod 7. By setting a support template body structure at the bottom of the precast composite floor slab body and the post-cast strip, and installing support components through a sliding structure, multiple support components can be set. The bottom can be stably supported, and disassembly and assembly are convenient. The bottom support mechanism is simple and low in cost.

[0027] The lower surface of nut 10 presses against the upper surface of telescopic support sleeve body 8. In use, by rotating nut 10 downward, nut 10 can rotate downward outside the threaded support rod 7, which can drive telescopic support sleeve body 8 to slide downward, extend telescopic support sleeve body 8 to support the ground, and can hold the upper support template body 3, providing stable support.

[0028] The longitudinal support rib 5 adopts a convex strip structure, and the inner surface of the C-shaped sliding bracket 6 is slidably sleeved on the outer surface of the longitudinal support rib 5. In use, the C-shaped sliding bracket 6 can be slidably fitted outside the longitudinal support rib 5. The threaded support rod 7 and the C-shaped sliding bracket 6 can be distributed in multiple groups, and can be supported at multiple points on the lower surface of the support template body 3. The support is stable.

[0029] A triangular support rib 11 is fixedly connected at the connection between the support base 9 and the telescopic support sleeve body 8. The triangular support rib 11 is evenly distributed on the outer surface of the support base 9 and the telescopic support sleeve body 8. The distribution is uniform and the support is stable. The triangular support rib 11 can improve the firmness of the connection between the support base 9 and the telescopic support sleeve body 8 and improve the support stability.

[0030] The transverse support ribs 4 are evenly distributed on the lower surface of the support template body 3; the transverse support ribs 4 can be evenly distributed on the lower surface of the support template body 3 to improve the support strength of the support template body 3.

[0031] The longitudinal support ribs 5 are distributed on the left and right sides on the lower surface of the transverse support ribs 4; this can improve the support strength of the main body of the support template 3.

[0032] The support base 9 is a circular base, which is welded and fixed to the lower surface of the telescopic support sleeve body 8; the welding is firm and its bottom support force is high.

[0033] In use, a support template body 3 is attached to the lower surface of the precast composite floor slab body 1. The support template body 3 extends out at the bottom gap between the two precast composite floor slab bodies 1. After pouring, a pouring strip 2 is formed. The lower surface of the support template body 3 is provided with transverse support ribs 4. The lower surface of the transverse support ribs 4 is fixed with longitudinal support ribs 5. The outer surface of the longitudinal support ribs 5 is slidably connected with a C-shaped sliding bracket 6. The lower surface of the C-shaped sliding bracket 6 is fixedly connected with a threaded support rod 7. The outer surface of the threaded support rod 7 is sleeved with an expansion joint. The lower surface of the telescopic support sleeve body 8 is fixedly connected to the support base 9, and the outer surface of the threaded support rod 7 is connected to the nut 10 by thread. The longitudinal support rib 5 adopts a convex strip structure, and the inner surface of the C-shaped sliding bracket 6 is slidably sleeved on the outer surface of the longitudinal support rib 5. In use, the C-shaped sliding bracket 6 can be slidably fitted outside the longitudinal support rib 5. The threaded support rod 7 and the C-shaped sliding bracket 6 can be distributed in multiple groups, and they can be supported at multiple points on the lower surface of the support template body 3. The support is stable.

[0034] When in use, the lower surface of the nut 10 presses against the upper surface of the telescopic support sleeve body 8. When in use, by rotating the nut 10 downward, the nut 10 can rotate downward outside the threaded support rod 7, which can drive the telescopic support sleeve body 8 to slide downward, which can extend the telescopic support sleeve body 8 to support the ground and can hold the upper support template body 3, providing stable support. When disassembling, loosening the nut 10 can loosen the bottom telescopic support sleeve body 8, which can slide out of the C-shaped sliding mounting seat 6, making it easy to slide and disassemble.

[0035] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A prefabricated composite floor post-cast strip support device, comprising a prefabricated composite floor body (1), a post-cast strip (2), characterized in that: The lower surface of the precast composite floor slab body (1) is fitted with a support template body (3). The lower surface of the support template body (3) is provided with a transverse support rib (4). The lower surface of the transverse support rib (4) is fixed with a longitudinal support rib (5). The outer surface of the longitudinal support rib (5) is slidably connected with a C-shaped sliding fitting seat (6). The lower surface of the C-shaped sliding fitting seat (6) is fixedly connected with a threaded support rod (7). The outer surface of the threaded support rod (7) is sleeved with a telescopic support sleeve body (8). The lower surface of the telescopic support sleeve body (8) is fixedly connected with a support base (9). The outer surface of the threaded support rod (7) is connected with a nut (10) by threads.

2. The post-cast strip support device for a precast composite floor slab according to claim 1, characterized in that: The lower surface of the nut (10) presses against the upper surface of the telescopic support sleeve body (8).

3. The post-cast strip support device for a precast composite floor slab according to claim 1, characterized in that: The longitudinal support rib (5) adopts a convex strip structure, and the inner surface of the C-shaped sliding mounting bracket (6) is slidably sleeved on the outer surface of the longitudinal support rib (5).

4. The precast composite floor post-cast strip support device according to claim 1, wherein: A triangular support rib (11) is fixedly connected at the connection between the support base (9) and the telescopic support sleeve body (8). The triangular support rib (11) is evenly distributed on a ring of the outer surface of the support base (9) and the telescopic support sleeve body (8).

5. The precast composite floor post-cast strip support device according to claim 1, wherein: The transverse support ribs (4) are evenly distributed on the lower surface of the support template body (3).

6. The precast composite floor post-cast strip support device according to claim 1, wherein: The longitudinal support ribs (5) are distributed on the left and right sides on the lower surface of the transverse support ribs (4).

7. The post-cast strip support device for a precast composite floor slab according to claim 1, characterized in that: The support base (9) is a circular base, and its support base (9) is welded and fixed to the lower surface of the telescopic support sleeve body (8).

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