Quick connecting and reinforcing device for bottom of single-side steel formwork

Abstract

The utility model discloses a unilateral steel formwork bottom quick connecting and reinforcing device which comprises a steel plate, two steel channels are fixedly welded to the middle of one end face of the steel plate, deformed steel bars are arranged between the two steel channels, one side of each deformed steel bar is connected with a reinforcing nut through a thread structure, and steel gaskets are arranged between the reinforcing nuts and the steel channels. A top plate is movably arranged between the circular truncated cone nut and the channel steel, the two sides of one end face of the top plate are fixedly connected with one ends of springs respectively, and the other ends of the springs are fixedly connected with the channel steel. A circular truncated cone nut is embedded in the bottom of a side wall structure and is tightly embedded in a concrete structure, the circular truncated cone nut is connected through finish rolling deformed steel bars in the installation process of a single-side steel formwork, the bottom of the formwork is oppositely pulled and reinforced, and it is guaranteed that the steel side formwork is tightly connected with concrete at the bottom of the side wall; therefore, the phenomena of grout leakage and voids and pitted surfaces at the construction joints during concrete pouring are reduced, and good joining of the side wall construction joints and flat and smooth appearance quality are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel formwork reinforcement, in particular to a quick connection reinforcement device for the bottom of a single-side steel formwork. Background Art

[0002] During the installation of the single-sided steel formwork for the side wall, the bottom of the conventional steel formwork has less contact with the concrete support surface, so the bottom steel formwork can only be reinforced by pre-embedded tie rods at the chamfer of the bottom of the side wall or by adding diagonal braces to the top steel formwork on the outside. This makes it difficult to effectively fix the bottom position of the formwork, resulting in leakage or honeycombing at the bottom construction joint during the side wall pouring process, and the appearance quality is poor. For this reason, we propose a quick connection and reinforcement device for the bottom of the single-sided steel formwork to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a quick connection and reinforcement device for the bottom of a single-sided steel formwork to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick connection and reinforcement device for the bottom of a single-sided steel formwork, comprising a steel plate, two channel steels fixedly welded in the middle of one end face of the steel plate, a threaded steel bar is provided between the two channel steels, one side of the threaded steel bar is connected to a reinforcement nut via a threaded structure, a steel gasket is provided between the reinforcement nut and the channel steel, the other side of the threaded steel bar is connected to a conical nut via a threaded structure, a top plate is movably provided between the conical nut and the channel steel, one end of a spring is fixedly connected to both sides of one end face of the top plate, and the other end of the spring is fixedly connected to the channel steel.

[0005] Preferably, the channel steels are symmetrically arranged.

[0006] Preferably, the top plates are symmetrically arranged.

[0007] Preferably, the surface area of the top plate is larger than the vertical cross-sectional area of the channel steel.

[0008] Preferably, an arc-shaped opening is formed on one end surface of the top plate, and the inner diameter of the arc-shaped opening is greater than or equal to the outer diameter of the threaded steel bar.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: by pre-embedding the conical nuts at the bottom of the side wall structure, the conical nuts are tightly embedded in the concrete structure; during the installation of the single-sided steel formwork, the conical nuts are connected by fine-rolled threaded steel and the bottom of the formwork is reinforced by pulling, thereby ensuring that the steel side formwork is tightly connected to the concrete at the bottom of the side wall, thereby reducing the occurrence of leakage and honeycombed surface at the construction joints during concrete pouring, ensuring that the construction joints of the side walls are well connected and the surface quality is flat and smooth; at the same time, the top plate is pressed against the concrete at the bottom of the side wall through the elastic force of the spring, further reducing the occurrence of leakage and honeycombed surface at the construction joints during concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic structural diagram of another perspective of the present utility model;

[0012] Figure 3 It is a side view of the utility model.

[0013] In the figure: steel plate 1, channel steel 2, cone nut 3, threaded steel 4, top plate 5, spring 6, steel washer 7, reinforcement nut 8. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0015] Reference Figure 1 、 2 , which is the first embodiment of the utility model, and provides a quick connection and reinforcement device for the bottom of a single-sided steel formwork, including a steel plate 1, two channel steels 2 are fixedly welded in the middle of one end face of the steel plate 1, and a threaded steel bar 4 is provided between the two channel steels 2. One side of the threaded steel bar 4 is connected to a reinforcing nut 8 through a threaded structure, and a steel gasket 7 is provided between the reinforcing nut 8 and the channel steel 2. The conical nut 3 is tightly embedded in the concrete structure, and the conical nut 3 is connected to the threaded steel 4. The reinforcing nut 8 is then tightened, and the reinforcing nut 8 cooperates with the steel gasket 7 to reinforce the steel plate 1 and the channel steel 2. The other side of the threaded steel 4 is connected to the conical nut 3 through a threaded structure, and a top plate 5 is movably provided between the conical nut 3 and the channel steel 2. One end of a spring 6 is fixedly connected to both sides of one end face of the top plate 5, and the other end of the spring 6 is fixedly connected to the channel steel 2.

[0016] By pre-embedding the cone nut 3 at the bottom of the side wall structure, the cone nut 3 is tightly embedded in the concrete structure. During the installation of the single-sided steel formwork, the cone nut 3 is connected by the fine-rolled threaded steel 4 and the bottom of the formwork is pulled and reinforced to ensure that the steel side formwork is tightly connected to the concrete at the bottom of the side wall, thereby reducing the leakage and honeycomb surface phenomenon at the construction joint during concrete pouring, ensuring that the construction joint of the side wall is well connected and the surface quality is flat and smooth. The steel plate 1 and the channel steel 2 are connected to the upper steel side formwork as a whole to support the side wall as a whole. The steel formwork is supported by a steel truss on the outside. The outer steel truss is not shown in the figure and is embedded in the side wall structure through the cone nut 3. A fixed connection device for installing tension screws is formed at the bottom of the structure, which can ensure that the steel plate 1 and the channel steel 2 are effectively combined with the concrete surface at the bottom of the side wall, reducing the gaps that leak slurry, and will not cause damage to the original concrete structure. The operation method is simple, the template connection and fixation are easy to master, and the side wall can be quickly disassembled after the casting is completed, which greatly improves the bottom template reinforcement efficiency and concrete surface quality. At the same time, the top plate 5 is tightly against the concrete at the bottom of the side wall through the elastic force of the spring 6. At the same time, the top plate 5 seals the gaps between the channel steels 2, further reducing the leakage and honeycomb surface phenomena at the construction joints during concrete pouring. Example

[0017] Reference Figure 1-3 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Specifically, the channel steel 2 is symmetrically arranged. The symmetrical arrangement further improves the stability of the channel steel 2 supporting the steel plate 1.

[0018] Specifically, the top plate 5 is symmetrically arranged so that the top plate 5 matches the channel steel 2.

[0019] Specifically, the surface area of the top plate 5 is larger than the vertical cross-sectional area of the channel steels 2 . The larger area of the top plate 5 allows the top plate 5 to completely cover the gaps between the channel steels 2 .

[0020] Specifically, an arc-shaped opening is opened on one end surface of the top plate 5 and the inner diameter of the arc-shaped opening is greater than or equal to the outer diameter of the threaded steel 4. The setting of the arc-shaped opening allows the threaded steel 4 to pass through the circular hole formed between the two top plates 5, thereby facilitating the installation of the threaded steel 4. Example

[0021] Reference Figure 1-3, which is the third embodiment of the present utility model. This embodiment is based on the above two embodiments. When in use, the cone nut 3 is pre-embedded at the bottom of the side wall structure, and the cone nut 3 is tightly embedded in the concrete structure. During the installation of the single-sided steel formwork, the cone nut 3 is connected by the precision-rolled threaded steel 4 and the bottom of the formwork is pulled and reinforced to ensure that the steel side formwork is tightly connected to the concrete at the bottom of the side wall, thereby reducing the leakage and honeycomb surface phenomena at the construction joints during concrete pouring, ensuring that the construction joints of the side walls are well connected and the surface quality is flat and smooth. At the same time, the top plate 5 is tightly pressed against the concrete at the bottom of the side wall through the elastic force of the spring 6. At the same time, the top plate 5 seals the gaps between the channel steels 2, further reducing the leakage and honeycomb surface phenomena at the construction joints during concrete pouring.

[0022] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick connection and reinforcement device for the bottom of a single-sided steel formwork, comprising a steel plate (1), characterized in that: Two channel steels (2) are fixedly welded to the middle of one end face of the steel plate (1), a threaded steel bar (4) is provided between the two channel steels (2), one side of the threaded steel bar (4) is connected to a reinforcing nut (8) via a threaded structure, a steel gasket (7) is provided between the reinforcing nut (8) and the channel steel (2), the other side of the threaded steel bar (4) is connected to a truncated cone nut (3) via a threaded structure, a top plate (5) is movably provided between the truncated cone nut (3) and the channel steel (2), one end of a spring (6) is fixedly connected to both sides of one end face of the top plate (5), and the other end of the spring (6) is fixedly connected to the channel steel (2).

2. A quick connection and reinforcement device for the bottom of a single-sided steel formwork according to claim 1, characterized in that: The channel steels (2) are symmetrically arranged.

3. The quick connection and reinforcement device for the bottom of a single-sided steel formwork according to claim 1, characterized in that: The top plate (5) is symmetrically arranged.

4. The quick connection and reinforcement device for the bottom of a single-sided steel formwork according to claim 1, characterized in that: The surface area of the top plate (5) is larger than the vertical cross-sectional area of the channel steel (2).

5. The quick connection and reinforcement device for the bottom of a single-sided steel formwork according to claim 1, characterized in that: An arc-shaped opening is formed on one end surface of the top plate (5), and the inner diameter of the arc-shaped opening is greater than or equal to the outer diameter of the threaded steel bar (4).

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