Construction tool for joint of laminated slab and cast-in-place layer

Abstract

The utility model discloses a construction tool for the joint of laminated slabs and a cast-in-place layer, which comprises templates arranged at the bottoms of the two laminated slabs, a bottom supporting piece, a top limiting piece and a sealing piece, the two bottom supporting pieces comprise upper supporting rods, vertical connecting rods, lower limiting rods and mounting columns, the upper supporting rods, the vertical connecting rods, the lower limiting rods and the mounting columns are integrally formed, the vertical connecting rods can be rotationally arranged in the mounting columns in a penetrating mode, the lower limiting rods can stretch into the bottoms of the formworks and are arranged in an attached mode, and the upper supporting rods can stretch into the bottoms of the laminated slabs and are arranged in an attached mode; the top limiting piece comprises a horizontal pressing plate and a connecting screw rod perpendicular to the horizontal pressing plate, and the bottom, penetrating through the formwork, of the connecting screw rod is provided with a locking nut; the sealing piece comprises a rubber block embedded in the top of the formwork and attached to the ground of the laminated slab and a vertical adjusting assembly connected with the rubber block. According to the utility model, the bottom surface of the laminated slab is ensured to be flat, and the bottom surface of the laminated slab is tightly attached to the template by combining with the sealing element, so that slurry leakage at the joint of the laminated slab and the cast-in-place layer is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite slab construction, and particularly relates to a construction tool for the joint between a composite slab and a cast-in-place layer. Background Technique

[0002] A composite floor slab is an assembled monolithic floor slab formed by laminating a composite slab and a cast-in-place layer. The composite floor slab has good integrity and is convenient for finishing the decorative layer, and is suitable for high-rise buildings and large-span buildings with high requirements for overall stiffness. However, during the construction of the composite slab and the cast-in-place layer, if the composite slab and the construction formwork cannot be closely attached, slurry leakage will occur during the casting of cast-in-place concrete, resulting in poor aesthetics and waste of concrete materials.

[0003] Chinese Patent CN202323372376.9 discloses a slurry leakage prevention structure for the joint between a composite slab and a cast-in-place belt. A sealing rubber strip is arranged at the bottom of the cast-in-place belt formwork close to the composite slab component, which improves the sealing performance between the composite slab component and the cast-in-place belt formwork and reduces the possibility of slurry leakage. However, it cannot effectively solve the slurry leakage caused by the unevenness of the bottom surfaces of two composite slabs not meeting the requirements.

[0004] Therefore, there is an urgent need for a construction tool for the joint between a composite slab and a cast-in-place layer with a simple structure and reasonable design. By using a bottom support member and a top limit member to support and limit two composite slabs, the bottom surface of the composite slab can be ensured to be flat, and then combined with a sealing member to make the bottom surface of the composite slab fit tightly with the formwork, preventing slurry leakage at the joint between the composite slab and the cast-in-place layer. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a construction tool for the joint between a composite slab and a cast-in-place layer aiming at the deficiencies in the above-mentioned prior art. The construction tool has a simple structure and reasonable design. By using a bottom support member and a top limit member to support and limit two composite slabs, the bottom surface of the composite slab can be ensured to be flat, and then combined with a sealing member to make the bottom surface of the composite slab fit tightly with the formwork, preventing slurry leakage at the joint between the composite slab and the cast-in-place layer.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is: a construction tool for the joint between a composite slab and a cast-in-place layer, which is characterized in that it includes a formwork arranged at the bottom of two composite slabs, a support plate arranged at the bottom of the formwork, two bottom support members symmetrically arranged on both sides of the support plate and supporting the bottom of the composite slab, a top limit member arranged between the tops of the two composite slabs, and a sealing member arranged at the bottom of the composite slab;

[0007] The structures of the two bottom support members are the same, and the two bottom support members include an integrally formed upper support rod, a vertical connecting rod, and a lower limit rod, as well as mounting columns arranged on both sides of the support plate. The vertical connecting rod can rotatably pass through the mounting column, the lower limit rod can extend into the bottom of the support plate and be arranged in a fitting manner, and the upper support rod can extend into the bottom of the laminated board and be arranged in a fitting manner;

[0008] The top limit member includes a horizontal pressing plate extending on the tops of the two laminated boards and a connecting screw rod arranged perpendicular to the horizontal pressing plate. A locking nut is arranged at the bottom of the connecting screw rod passing through the formwork and the support plate;

[0009] The sealing member includes a rubber block embedded in the top of the formwork and fitting the bottom surface of the laminated board and a vertical adjusting assembly connected to the rubber block.

[0010] For the above-mentioned construction tool for the joint between the laminated board and the cast-in-place layer, it is characterized in that: the vertical connecting rod is a threaded rod, and an upper locking nut and a lower locking nut are arranged on the vertical connecting rod. The upper locking nut is located at the top of the mounting column, and the lower locking nut is located at the bottom of the mounting column.

[0011] For the above-mentioned construction tool for the joint between the laminated board and the cast-in-place layer, it is characterized in that: a grout stop piece is arranged on the connecting screw rod, and the grout stop piece fits the top surface of the formwork.

[0012] For the above-mentioned construction tool for the joint between the laminated board and the cast-in-place layer, it is characterized in that: the vertical adjusting assembly includes a vertical adjusting screw rod and an adjusting nut sleeved on the vertical adjusting screw rod. The top of the vertical adjusting screw rod is connected to the bottom of the rubber block. The vertical adjusting screw rod passes through the formwork and the support plate, and the adjusting nut is located at the lower part of the support plate.

[0013] For the above-mentioned construction tool for the joint between the laminated board and the cast-in-place layer, it is characterized in that: a base plate is attached to the bottom of the rubber block, and the top of the vertical adjusting screw rod is connected to the bottom of the base plate.

[0014] The utility model has the following advantages compared with the prior art:

[0015] 1. The utility model sets a top limit member to realize the top limit of two adjacent laminated boards, and the bottom of two adjacent laminated boards is supported and limited by two bottom support members, avoiding the inclination of two adjacent laminated boards, thereby ensuring the flatness of the bottom surface of the laminated board. Furthermore, in combination with the sealing member, the bottom surface of the laminated board and the formwork are closely attached, preventing the leakage of grout at the joint between the laminated board and the cast-in-place layer.

[0016] 2. The bottom support member is provided in the utility model to enable the vertical connecting rod to rotate around the mounting column, so that the lower limit rod extends into the bottom of the support plate and fits closely, and the upper support rod extends into the bottom of the laminated slab and fits closely. Under the action of the support plate and the lower limit rod, the bottom of the laminated slab is supported by the upper support rod in close contact, thereby increasing the contact area of the bottom support of the laminated slab and improving the support stability, so as to ensure the flatness of the bottom surface of the laminated slab. In addition, after the construction is completed, it can also rotate around the mounting column and disengage from the bottom of the support plate and the bottom of the laminated slab, which is convenient for disassembly and reuse.

[0017] In summary, the utility model has a simple structure and reasonable design. The two laminated slabs are supported and limited by the bottom support member and the top limit member, so as to ensure the flatness of the bottom surface of the laminated slab. Furthermore, the sealing member is combined to make the bottom surface of the laminated slab fit tightly with the formwork, preventing the leakage of slurry at the joint between the laminated slab and the cast-in-place layer.

[0018] The technical solution of the utility model will be further described in detail below with reference to the drawings and embodiments. Brief Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the sealing member of the utility model.

[0021] Description of the Reference Numerals:

[0022] 1 - Formwork; 2 - Bottom support member; 2-1 - Upper support rod;

[0023] 2-2 - Vertical connecting rod; 2-3 - Lower limit rod; 2-4 - Upper locking nut;

[0024] 2-5 - Lower locking nut; 2-6 - Mounting column;

[0025] 3 - Top limit member; 3-1 - Horizontal pressure plate; 3-2 - Connecting screw;

[0026] 3-3 - Grout stop piece; 3-4 - Locking nut; 4 - Cast-in-place layer;

[0027] 5 - Sealing member; 5-1 - Rubber block;

[0028] 5-2-1 - Substrate; 5-2-2 - Vertical adjusting screw;

[0029] 5-3 - Adjusting nut; 6 - Laminated slab; 7 - Support plate. Detailed Description of the Embodiment

[0030] As Figures 1 to 2As shown in the figure, the utility model includes a template 1 arranged at the bottom of two superposed plates 6, a support plate 7 arranged at the bottom of the template 1, two bottom support members 2 symmetrically arranged on both sides of the support plate 7 and supporting the bottom of the superposed plates 6, a top limiting member 3 arranged between the tops of the two superposed plates 6, and a seal member 5 arranged at the bottom of the superposed plates 6;

[0031] The two bottom support members 2 have the same structure, and the two bottom support members 2 include an integrally formed upper support rod 2-1, a vertical connecting rod 2-2, a lower limiting rod 2-3, and mounting columns 2-6 arranged on both sides of the support plate 7. The vertical connecting rod 2-2 can rotatably pass through the mounting column 2-6, the lower limiting rod 2-3 can extend into the bottom of the support plate 7 and be arranged in a fitting manner, and the upper support rod 2-1 can extend into the bottom of the superposed plate 6 and be arranged in a fitting manner;

[0032] The top limiting member 3 includes a horizontal pressing plate 3-1 extending on the tops of the two superposed plates 6 and a connecting screw rod 3-2 vertically arranged with the horizontal pressing plate 3-1. The connecting screw rod 3-2 passes through the template 1 and a locking nut 3-4 is arranged at the bottom of the support plate 7;

[0033] The seal member 5 includes a rubber block 5-1 embedded in the top of the template 1 and fitting the bottom surface of the superposed plate 6 and a vertical adjusting assembly connected to the rubber block 5-1.

[0034] In this embodiment, the vertical connecting rod 2-2 is a threaded rod, and an upper locking nut 2-4 and a lower locking nut 2-5 are arranged on the vertical connecting rod 2-2. The upper locking nut 2-4 is located at the top of the mounting column 2-6, and the lower locking nut 2-5 is located at the bottom of the mounting column 2-6.

[0035] In this embodiment, a grout stop piece 3-3 is arranged on the connecting screw rod 3-2, and the grout stop piece 3-3 fits the top surface of the template 1.

[0036] In this embodiment, the vertical adjusting assembly includes a vertical adjusting screw rod 5-2-2 and an adjusting nut 5-3 sleeved on the vertical adjusting screw rod 5-2-2. The top of the vertical adjusting screw rod 5-2-2 is connected to the bottom of the rubber block 5-1. The vertical adjusting screw rod 5-2-2 passes through the template 1 and the support plate 7, and the adjusting nut 5-3 is located at the lower part of the support plate 7.

[0037] In this embodiment, a base plate 5-2-1 is attached to the bottom of the rubber block 5-1, and the top of the vertical adjusting screw rod 5-2-2 is connected to the bottom of the base plate 5-2-1.

[0038] In this embodiment, the upper support rod 2-1, the vertical connecting rod 2-2, and the lower limiting rod 2-3 are arranged in a Z shape, and the upper support rod 2-1 and the lower limiting rod 2-3 are parallel and perpendicular to the vertical connecting rod 2-2.

[0039] In this embodiment, during actual use, a through hole for the vertical connecting rod 2-2 to pass through is provided in the mounting post 2-6, so that the vertical connecting rod 2-2 can rotate around the mounting post 2-6.

[0040] In this embodiment, the vertical connecting rod 2-2 is rotatably arranged in the mounting post 2-6. When pouring during construction, the lower limit rod 2-3 drives the vertical connecting rod 2-2 to rotate around the mounting post 2-6 until the lower limit rod 2-3 extends into the bottom of the formwork 1 and fits, and the upper support rod 2-1 extends into the bottom of the composite slab 6 and fits, so as to realize the support for the bottom of the composite slab 6.

[0041] When the construction is completed, the vertical connecting rod 2-2 is rotated in the reverse direction so that the length directions of the lower limit rod 2-3 and the upper support rod 2-1 contract and are accommodated along the length direction of the formwork 1 or the support plate 7, realizing the separation of the lower limit rod 2-3 and the upper support rod 2-1 from the limit support, facilitating disassembly and subsequent reuse.

[0042] In this embodiment, the lower limit rod 2-3 is set to extend into the bottom of the formwork 1 and fit. The lower limit rod 2-3 is limited by the bottom of the support plate 7, so as to apply force to the upper support rod 2-1, so that the upper support rod 2-1 supports the bottom of the composite slab 6 to bear the load, thus realizing the support.

[0043] In this embodiment, during actual use, the number of the bottom support members 2 and the top limit members 3 is multiple, and they are arranged along the length direction of the composite slab 6, the formwork 1 and the support plate 7.

[0044] In this embodiment, the top limit member 3 is provided to press the horizontal pressing plate 3-1 on the tops of two composite slabs 6, so as to limit the ends of the tops of the composite slabs 6, so that the composite slabs are pressed down to fit the formwork 1. In this way, under the top limit of the top limit member 3, the bottom of the composite slab 6 is supported and limited by the bottom support member 2, so as to ensure the flatness of the composite slab 6.

[0045] In this embodiment, during actual use, a groove for embedding the rubber block 5-1 is provided at the top of the formwork 1, and the depth of the groove is greater than the thickness of the rubber block 5-1.

[0046] In this embodiment, during actual use, the substrate 5-2-1 is provided to realize the bearing and installation of the rubber block 5-1, so that the substrate 5-2-1 drives the rubber block 5-1 to move up and down integrally in the length direction, improving the adjustment accuracy of the rubber block 5-1.

[0047] The adjusting nut 5-3 is provided to adjust the up and down movement of the substrate 5-2-1 when the adjusting nut 5-3 rotates and adjusts, so as to ensure that the rubber block 5-1 is adjusted in place, so that the top of the rubber block 5-1 is just tightly and sealingly connected to the bottom of the composite slab 6.

[0048] When the utility model is specifically used, a top limiting member 3 is arranged between two superposed plates 6 and a template 1, a horizontal pressing plate 3-1 extends on the tops of the two superposed plates 6, and a connecting screw rod 3-2 passes through the bottom of the template 1 and a support plate 7 and is provided with a locking nut 3-4;

[0049] Then, loosen the upper locking nut 2-4 and the lower locking nut 2-5 to release the locking, drive the vertical connecting rod 2-2 to rotate around the mounting column 2-6 through the lower limiting rod 2-3 until the lower limiting rod 2-3 extends into the bottom of the template 1 and fits and arranges, and the upper support rod 2-1 extends into the bottom of the superposed plate 6 and fits and arranges, so as to realize the support of the bottom of the superposed plate 6, and then screw the upper locking nut 2-4 and the lower locking nut 2-5 to realize the locking of the vertical connecting rod 2-2 relative to the mounting column 2-6;

[0050] Then, screw the adjusting nut 5-3 to fit and rotate on the bottom of the support plate 7 to drive the vertical adjusting screw rod 5-2-2 to move upward. The upward movement of the vertical adjusting screw rod 5-2-2 drives the rubber block 5-1 to move upward through the substrate 5-2-1 until the top of the rubber block 5-1 is just tightly and hermetically connected to the bottom of the superposed plate 6; then, pour concrete on two adjacent superposed plates 6 to form a cast-in-place layer 4. After the subsequent pouring is completed, disassemble the template 1 and the support plate 7, and cut the extended end of the connecting screw rod 3-2.

[0051] In summary, the utility model has a simple structure and reasonable design. The two superposed plates are supported and limited by the bottom support member and the top limiting member, so as to ensure the flatness of the bottom surface of the superposed plate, and then the sealing member is combined to make the bottom surface of the superposed plate fit tightly with the template, preventing slurry leakage at the joint between the superposed plate and the cast-in-place layer.

[0052] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the present utility model. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A construction tool for the joint of a composite slab and a cast-in-place layer, characterized in that: It comprises a template (1) arranged at the bottom of two superimposed plates (6), a support plate (7) arranged at the bottom of the template (1), two bottom support members (2) symmetrically arranged on both sides of the support plate (7) and supporting the bottom of the superimposed plates (6), a top stopper (3) arranged between the tops of the two superimposed plates (6), and a sealing member (5) arranged at the bottom of the superimposed plates (6); The two bottom support members (2) have the same structure, and the two bottom support members (2) include an upper support rod (2-1), a vertical connecting rod (2-2) and a lower limiting rod (2-3) which are integrally formed, and mounting columns (2-6) arranged on both sides of the support plate (7); the vertical connecting rod (2-2) can be rotatably inserted into the mounting column (2-6); the lower limiting rod (2-3) can extend into the bottom of the support plate (7) and be closely arranged; and the upper support rod (2-1) can extend into the bottom of the composite plate (6) and be closely arranged; The top stopper (3) comprises a horizontal pressing plate (3-1) extending on the top of the two superimposed plates (6) and a connecting screw (3-2) arranged perpendicular to the horizontal pressing plate (3-1); the connecting screw (3-2) passes through the template (1) and the bottom of the support plate (7) and is provided with a locking nut (3-4); The sealing member (5) comprises a rubber block (5-1) embedded in the top of the template (1) and in contact with the bottom surface of the superimposed plate (6), and a vertical adjustment component connected to the rubber block (5-1).

2. A construction tool for the joint of a composite slab and a cast-in-place layer according to claim 1, characterized in that: The vertical connecting rod (2-2) is a threaded rod. An upper locking nut (2-4) and a lower locking nut (2-5) are provided on the vertical connecting rod (2-2). The upper locking nut (2-4) is located at the top of the mounting column (2-6), and the lower locking nut (2-5) is located at the bottom of the mounting column (2-6).

3. A construction tool for the joint of a composite slab and a cast-in-place layer according to claim 1, characterized in that: The connecting screw rod (3-2) is provided with a stop plate (3-3), and the stop plate (3-3) is in contact with the top surface of the template (1).

4. A construction tool for the joint of a composite slab and a cast-in-place layer according to claim 1, characterized in that: The vertical adjustment assembly comprises a vertical adjustment screw (5-2-2) and an adjustment nut (5-3) sleeved on the vertical adjustment screw (5-2-2); the top of the vertical adjustment screw (5-2-2) is connected to the bottom of the rubber block (5-1); the vertical adjustment screw (5-2-2) passes through the template (1) and the support plate (7); and the adjustment nut (5-3) is located at the bottom of the support plate (7).

5. A construction tool for the joint of a composite slab and a cast-in-place layer according to claim 4, characterized in that: A base plate (5-2-1) is attached to the bottom of the rubber block (5-1), and the top of the vertical adjustment screw rod (5-2-2) is connected to the bottom of the base plate (5-2-1).

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