Building construction pouring formwork fastener

Abstract

The utility model relates to the technical field of building construction, in particular to a building construction pouring formwork fastener which comprises a screw rod, clamping blocks are arranged at the two ends of the screw rod in a sleeved mode, nuts are connected to the two ends of the screw rod in a sleeved and screwed mode, limiting blocks are connected to the sides, facing the nuts, of the clamping blocks in an inserted mode, the number of the limiting blocks is two, and when the nuts lock and extrude the clamping blocks to clamp a building formwork, the clamping blocks are clamped. The two limiting blocks are distributed on the two sides of the nut, and anti-rotation limiting of the nut is achieved. The anti-rotation limiting nut has the beneficial effect that the anti-rotation limiting function of the nut is achieved through the design of the limiting block. When the nut is locked, the limiting blocks can automatically pop up and are distributed on the two sides of the nut, rotation of the nut on the screw rod is effectively prevented, and therefore the problem that the clamping blocks are loosened due to loosening of the nut is solved. By means of the design, the overall stability of the fastener is improved, and tight connection between formworks is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a formwork fastener for building construction pouring. Background Technique

[0002] In building construction, especially during concrete pouring, the fastening of formwork is a very important link. The stability of the formwork directly affects the pouring quality and structural safety. Traditional formwork fasteners, such as simple bolt and nut combinations, although they can achieve the basic fastening function, often have some problems in the use process. For example, for wooden formwork, due to the material characteristics, slippage or loosening is likely to occur, resulting in an increase in the gap between formwork, thereby affecting the pouring effect. In addition, traditional fasteners are also prone to deformation or damage after long-term stress, further exacerbating the problem of formwork loosening.

[0003] Therefore, there is an urgent need in the market for a new type of formwork fastener for building construction pouring, which can improve the stability of the formwork while ensuring the fastening effect, reduce loosening and slippage phenomena, thereby improving the pouring quality and construction efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a formwork fastener for building construction pouring to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A formwork fastener for building construction pouring, including a screw rod, clamping blocks are sleeved at both ends of the screw rod, and nuts are sleeved and screwed at both ends of the screw rod. A limiting block is inserted on the side of the clamping block facing the nut. There are two limiting blocks. When the nut is tightened and squeezed to clamp the building formwork, the two limiting blocks are distributed on both sides of the nut to realize anti-rotation limit of the nut.

[0006] Preferably, the clamping block is in the shape of an arc-shaped plate structure. A convex platform is integrally formed on the inner ring surface of the clamping block. A perforation is opened on the surface of the convex platform. The aperture of the perforation is larger than the rod diameter of the screw rod. A rubber gasket is fixed on the surface of the convex platform. The rubber gasket is in the shape of an annular plate structure.

[0007] Preferably, clamping grooves are opened at both ends of the clamping block. The length of the long side of the clamping groove is equal to the width of the clamping block.

[0008] Preferably, an embedding groove is opened on the surface of the clamping block. The embedding groove is in the shape of an "L" groove. The width of the embedding groove is smaller than the width of the clamping block. The limiting block is in the shape of an "L" plate structure. The limiting block and the embedding groove correspond one by one. One end of the limiting block is inserted into the embedding groove.

[0009] Preferably, a reserved groove is formed at one end of the limiting block, a rubber clamping block is fixed inside the reserved groove, one end of the rubber clamping block is fixed on the surface of the embedded groove, and the width of the reserved groove is smaller than the width of the limiting block.

[0010] Preferably, a limiting groove is formed on the surface of the limiting block, an anti - detachment protrusion is slidably connected inside the limiting groove, and the anti - detachment protrusion is fixed on the surface of the embedded groove.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] For the formwork fastener for building construction pouring proposed by the present utility model, by setting a rubber gasket inside the clamping block, the friction between the clamping block and the building formwork is effectively increased. Especially on wooden formwork, the elasticity of the rubber gasket can further embed into the surface of the formwork, forming a more stable connection, greatly reducing the sliding and loosening phenomena of the formwork; the design of the limiting block realizes the function of preventing the nut from rotating. When the nut is locked, the limiting block will automatically pop out and be distributed on both sides of the nut, effectively preventing the nut from rotating on the screw rod, thus avoiding the problem of the clamping block loosening caused by the nut loosening. This design improves the overall stability of the fastener and ensures the tight connection between the formworks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a side view of the structure of the present utility model;

[0015] Figure 3 is Figure 2 a sectional view of the structure at A - A in

[0016] Figure 4 is Figure 3 an enlarged schematic view of the structure at A in

[0017] Figure 5 is a schematic diagram of the connection structure of the clamping block and the limiting block of the present utility model;

[0018] Figure 6 is a schematic diagram of the clamping block structure of the present utility model;

[0019] Figure 7 is a schematic diagram of the limiting block structure of the present utility model.

[0020] In the figure: screw rod 1, perforation 2, clamping block 3, clamping groove 4, rubber gasket 5, nut 6, embedded groove 7, limiting block 8, reserved groove 9, rubber clamping block 10, limiting groove 11, anti - detachment protrusion 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] Please refer to Figures 1 to 7 , the present utility model provides a technical solution: a formwork fastener for building construction pouring, including a screw rod 1. Both ends of the screw rod 1 are sleeved with clamping blocks 3. The clamping blocks 3 are in the shape of an arc-shaped plate structure. A boss is integrally formed on the inner ring surface of the clamping block 3. A through hole 2 is opened on the surface of the boss. The aperture of the through hole 2 is larger than the rod diameter of the screw rod 1. A rubber gasket 5 is fixed on the surface of the boss. The rubber gasket 5 is in the shape of an annular plate structure. Slots 4 are opened at both ends of the clamping block 3. The length of the long side of the slot 4 is equal to the width of the clamping block 3.

[0023] After passing both ends of the screw rod 1 through two parallel building formworks respectively, the two through holes 2 are respectively sleeved on both ends of the screw rod 1. Then, screw nuts 6 are respectively sleeved on both ends of the screw rod 1. After the nut 6 is tightened along the screw rod 1, the clamping block 3 is clamped between the nut 6 and the building formwork. At this time, the rubber gasket 5 is tightly clamped between the clamping block 3 and the building formwork to act as an anti-slip and elastic gasket. And for wooden formworks, after the clamping block 3 is pressed, the protrusions inside the slot 4 tightly clamp the wooden formwork, forming a recessed position on the surface of the wooden formwork.

[0024] Both ends of the screw rod 1 are sleeved and screwed with screw nuts 6. Two limiting blocks 8 are inserted on the side of the clamping block 3 facing the nut 6. When the nut 6 is tightened and pressed to clamp the building formwork, the two limiting blocks 8 are distributed on both sides of the nut 6 to realize anti-rotation limit of the nut 6. An embedding groove 7 is opened on the surface of the clamping block 3. The embedding groove 7 is in the shape of an "L" groove. The width of the embedding groove 7 is smaller than the width of the clamping block 3. The limiting block 8 is in the shape of an "L" plate structure. The limiting block 8 and the embedding groove 7 correspond one by one. One end of the limiting block 8 is inserted into the embedding groove 7. A reserved groove 9 is opened at one end of the limiting block 8. A rubber clamping block 10 is fixed inside the reserved groove 9. One end of the rubber clamping block 10 is fixed on the surface of the embedding groove 7. The width of the reserved groove 9 is smaller than the width of the limiting block 8. A limiting groove 11 is opened on the surface of the limiting block 8. An anti-detachment protrusion 12 is slidably connected inside the limiting groove 11. The anti-detachment protrusion 12 is fixed on the surface of the embedding groove 7.

[0025] When tightening and locking the nut 6, when the nut 6 approaches the clamping block 3, the limiting block 8 is pushed and retracted into the embedding groove 7. At this time, the rubber clamping block 10 is compressed to produce elastic deformation. After the nut 6 is retracted into the clamping block 3, the limiting block 8 is released, and the rubber clamping block 10 rebounds to push the limiting block 8 to move outward of the embedding groove 7 until the anti-detachment protrusion 12 blocks at one end of the limiting groove 11 to prevent the limiting block 8 from falling off the embedding groove 7. The two protruding limiting blocks 8 are distributed on both sides of the nut 6 to prevent the nut 6 from rotating on the screw rod 1, thereby preventing the clamping block 3 from loosening. Since the clamping block 3 tightly clamps on the surface of the wooden template without offset, the clamping block 3 will not rotate synchronously with the nut 6.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction casting formwork fastener, comprising a screw rod (1), characterized in that: Both ends of the screw rod (1) are sleeved with clamping blocks (3), and both ends of the screw rod (1) are sleeved with nuts (6) threadedly connected, and a limiting block (8) is inserted into the side of the clamping block (3) facing the nut (6), and two limiting blocks (8) are provided. When the nut (6) is locked and squeezed to clamp the building template, the two limiting blocks (8) are distributed on both sides of the nut (6), thereby realizing anti-rotation limiting of the nut (6).

2. A construction casting formwork fastener according to claim 1, characterized in that: The clamping block (3) is in the form of an arc-shaped plate structure. A boss is integrally formed on the inner annular surface of the clamping block (3). A through hole (2) is provided on the surface of the boss. The diameter of the through hole (2) is larger than the diameter of the screw rod (1). A rubber gasket (5) is fixed on the surface of the boss. The rubber gasket (5) is in the form of an annular plate structure.

3. A construction casting formwork fastener according to claim 1, characterized in that: Both ends of the clamping block (3) are provided with clamping grooves (4), and the length of the long side of the clamping groove (4) is equal to the width of the clamping block (3).

4. A construction casting formwork fastener according to claim 1, characterized in that: The surface of the clamping block (3) is provided with an embedding groove (7), which is an "L"-shaped groove. The width of the embedding groove (7) is smaller than the width of the clamping block (3). The limiting block (8) is an "L"-shaped plate-like structure. The limiting block (8) corresponds to the embedding groove (7) one by one, and one end of the limiting block (8) is inserted into the embedding groove (7).

5. A construction casting formwork fastener according to claim 4, characterized in that: A reserved groove (9) is formed at one end of the limit block (8), a rubber clamp (10) is fixed inside the reserved groove (9), one end of the rubber clamp (10) is fixed on the surface of the embedding groove (7), and the width of the reserved groove (9) is smaller than the width of the limit block (8).

6. A construction casting formwork fastener according to claim 4, characterized in that: The surface of the limit block (8) is provided with a limit groove (11), the interior of the limit groove (11) is slidably connected with an anti-slip protrusion (12), and the anti-slip protrusion (12) is fixed on the surface of the embedding groove (7).

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