Steel taper screw rod device for reinforcing large template
By designing a large-scale formwork reinforced steel cone screw device, the problem of difficult to remove formwork reinforcement in the existing technology is solved, and the effect of rapid demolition, reduced construction costs and improved construction safety is achieved.
Patent Information
- Application Number
- CN202421917974.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-08
AI Technical Summary
When using existing formwork reinforcement technology to deal with large concrete structures, the outer surface of conventional conical sleeves is prone to indisassembly problems, resulting in low construction efficiency, high cost and safety hazards.
A large-scale formwork reinforced steel cone screw device is designed, including a tie rod and a cone screw. The tie rod is welded with the embedded anchor. The cone screw is fixed on the formwork through the reserved hole of the formwork. After the casting is completed, it is separated from the cone screw by rotating the cone screw and pulled out from the concrete.
The device can quickly remove formwork, reduce construction period investment and construction costs, ensure the quality of the outer surface of concrete, and solve the hole problems through the same-color filling and repair treatment, improving construction safety and efficiency.
Smart Images
Figure CN222909452U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of formwork installation, and particularly relates to a large formwork reinforcement steel extraction taper screw device. Background Art
[0002] At present, in the application of 80m high water discharge towers, 72m high water intake towers in medium-sized hub projects and 26m high water discharge towers in small-sized projects, as well as in the formwork reinforcement of 24m traffic bridge piers, the concrete construction of the tower body (pier column) structure is carried out by layered pouring, and the pouring height of each layer is controlled at 6.0m. The formwork adopts standard steel formwork with dimensions of 2.5m×3.0m. A water stop belt is set at the construction joint of the underwater part with anti-seepage requirements, and only the construction joint is treated normally for layered pouring; the conventional conical sleeve is embedded on the outer surface of the concrete. Due to improper treatment, it is easy to be unable to be removed, and holes need to be chiseled for repair, which is time-consuming and laborious. How to reinforce the formwork well, ensure the quality of the concrete outer surface, and be able to be removed conveniently and quickly, and facilitate the filling treatment of the tapered holes reserved on the concrete surface is a problem worthy of consideration. Summary of the Invention
[0003] The technical problem to be solved by the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a large formwork reinforcement steel extraction taper screw device that reduces the input of the construction period, reduces the construction cost, is simple to operate, and has construction safety.
[0004] The technical solution adopted to solve the above technical problem is: a large formwork reinforcement steel extraction taper screw device, which includes a pull rod and an extraction taper screw. One end of the pull rod is welded and connected to the embedded anchor, and the other end is movably connected to one end of the extraction taper screw. The other end of the extraction taper screw passes through the formwork reserved hole and is vertically fixed on the formwork through a gasket and a nut. The pull rod is completely poured into the concrete, and after pouring is completed, the extraction taper screw can be pulled out from the concrete.
[0005] The pull rod of the utility model is composed of a pull rod body and a rod body thread head integrated into one body.
[0006] The extraction taper screw of the utility model includes a screw rod body. One end of the screw rod body is integrated with a cone. A groove is processed at the central position of the end of the cone, and coarse thread is processed in the groove. The rod body thread head is inserted into the groove and matched with the coarse thread. The other end of the screw rod body is integrated with a fixed rod, and trapezoidal thread is processed on the fixed rod.
[0007] Four-corner column heads are arranged at the end of the fixed rod of the utility model.
[0008] The taper of the cone of the utility model is 2-5°.
[0009] After the extraction taper screw of the utility model is pulled out, the end of the pull rod is 2-3cm away from the concrete surface.
[0010] Since the utility model adopts the method of welding one end of the pull rod to the embedded anchor and movably connecting the other end to one end of the taper screw, when the formwork is fixed, the pull rod and the taper screw are fixed by threading. After the pouring is completed, the taper screw is rotated to separate it from the pull rod, and then it is pulled out from the concrete. After the taper screw is pulled out, the end of the pull rod is 2-3 cm away from the concrete surface, ensuring that the pull rod does not need to be cut during hole treatment. After the formwork is removed, the same-grade mortar is used for color-matching filling and repair treatment, overcoming the defects of conventional formwork reinforcement treatment, effectively improving the rapid installation efficiency, promoting construction safety, having the advantages of reducing the construction period input, reducing the construction cost, simple operation, and construction safety, and can be popularized and applied to the field of large formwork installation and reinforcement of similar concrete structures. Brief Description of the Drawings
[0011] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.
[0012] Figure 2 is Figure 1 a schematic structural diagram of the pull rod 1 in
[0013] Figure 3 is Figure 1 a schematic structural diagram of the taper screw 2 in
[0014] In the figure: 1, pull rod; 2, taper screw; 3, gasket; 4, nut; 1-1, pull rod body; 1-2, rod thread head; 2-1, groove; 2-2, cone; 2-3, screw body; 2-4, fixed rod; 2-5, four-corner column head. Detailed Description of the Preferred Embodiments
[0015] The following further describes the present utility model in detail with reference to the drawings and embodiments, but the present utility model is not limited to these embodiments.
[0016] Embodiment 1
[0017] In Figures 1 to 3Among them, the large formwork reinforcement steel drawing taper screw device involved in the present utility model includes a pull rod 1 and a drawing taper screw 2. One end of the pull rod 1 is welded and connected to the embedded anchor, and the other end is movably connected to one end of the drawing taper screw 2. The other end of the drawing taper screw 2 passes through the formwork reserved hole and is vertically fixed to the formwork through a gasket 3 and a nut 4. The nut 4 and the gasket 3 are used for threading and fastening to fix the formwork. In practice, the pull rod 1 is entirely poured into the concrete. After pouring is completed, the drawing taper screw 2 can be pulled out of the concrete. After the drawing taper screw 2 is pulled out, the end of the pull rod 1 is 2-3 cm away from the concrete surface, ensuring that the pull rod 1 does not need to be cut during hole treatment. Specifically, the pull rod 1 in this embodiment is composed of a pull rod body 1-1 and a rod body thread head 1-2 connected as a whole. The drawing taper screw 2 includes a screw rod body 2-3. One end of the screw rod body 2-3 is connected as a whole with a cone 2-2. A groove 2-1 is processed at the center position of the end of the cone 2-2. Coarse thread is processed in the groove 2-1. When the formwork is fixed, the rod body thread head 1-2 is inserted into the groove 2-1 and matched with the coarse thread. After pouring is completed, the drawing taper screw 2 is rotated to disengage it from the pull rod 1, and then it is pulled out of the concrete. The other end of the screw rod body 2-3 is connected as a whole with a fixing rod 2-4. Trapezoidal thread is processed on the fixing rod 2-4. The gasket 3 and the nut 4 are arranged on the fixing rod 2-4, and the drawing taper screw 2 is fixed to the formwork by threading and matching with the trapezoidal thread. In order to facilitate the pulling out of the drawing taper screw 2, a four-corner head 2-5 is arranged at the end of the fixing rod 2-4. When the formwork is removed, the nut 4 and the gasket 3 are removed, and a wrench is used to push the four-corner head 2-5 to rotate. The cone part of the drawing taper screw 2 in the concrete will withdraw from the concrete. After the formwork is removed, the concrete holes are filled and repaired with the same-color mortar of the same grade. The part of the drawing taper screw 2 extending into the concrete surface is a cone structure, and the taper of the cone 2-2 is 2-5°, which is convenient for the drawing taper screw 2 to be pulled out and prevents the concrete from being carried out during pulling out, causing cavities.
Claims
1. A large-scale template reinforcement steel taper screw device, characterized in that: The invention comprises a pull rod (1) and a taper screw (2), one end of the pull rod (1) is welded to a pre-buried pull anchor, and the other end is movably connected to one end of the taper screw (2), the other end of the taper screw (2) passes through a reserved hole of the template and is vertically fixed to the template via a gasket (3) and a nut (4), the pull rod (1) is completely cast in concrete, and the taper screw (2) can be pulled out of the concrete after casting is completed.
2. The large-scale template reinforcement steel taper screw device according to claim 1 is characterized in that: The pull rod (1) is composed of a pull rod body (1-1) and a rod body thread head (1-2) connected as one body.
3. The large-scale template reinforcement steel taper screw device according to claim 2 is characterized in that: The taper screw (2) comprises a screw body (2-3), one end of the screw body (2-3) is connected to the cone body (2-2) as a whole, a groove (2-1) is processed at the center position of the end of the cone body (2-2), a coarse thread is processed in the groove (2-1), a rod body thread head (1-2) is inserted into the groove (2-1) and matched with the coarse thread, and the other end of the screw body (2-3) is connected to the fixed rod (2-4) as a whole, and the fixed rod (2-4) is processed with a trapezoidal thread.
4. The large-scale template reinforcement steel taper screw device according to claim 3 is characterized in that: The end of the fixing rod (2-4) is provided with a quadrangular column head (2-5).
5. The large-scale template reinforcement steel taper screw device according to claim 3 is characterized in that: The taper of the vertebral body (2-2) is 2-5°.
6. The large-scale template reinforcement steel taper screw device according to claim 1 is characterized in that: After the taper screw (2) is pulled out, the end of the pull rod (1) is 2 to 3 cm away from the concrete surface.