Node protection structure and concrete column formwork reinforcing device

Abstract

The application relates to a node protection structure and a concrete cylinder formwork reinforcing device. The application is suitable for the technical field of formwork reinforcing devices. The application aims to provide a node protection structure and a concrete cylinder formwork reinforcing device. The application adopts the technical scheme that a node protection structure is arranged at a connecting node of a steel belt of a concrete cylinder formwork, and the node protection structure comprises: a protection shell which is sleeved at the outside of the connecting node of the steel belt, the inner two end side walls of the protection shell are slidably connected with the connecting node of the steel belt, the end part of the protection shell is provided with a bottom opening, and the bottom opening is used for protecting the connecting node of the steel belt; and a sealing piece which is detachably arranged at the bottom opening of the protection shell, the inside of the sealing piece is provided with a locking piece capable of locking the connecting node of the steel belt, and the sealing piece is used for sealing the bottom opening of the protection shell.

Description

Technical Field

[0001] This utility model relates to the technical field of template reinforcement devices, and in particular to a node protection structure and a concrete cylindrical template reinforcement device. Background Technology

[0002] The construction process for fair-faced concrete cylindrical columns is as follows: First, the surface of the tied reinforcing bars must be cleaned to ensure that it is free of rust and pollution. Prefabricated tongue-and-groove wooden formwork is used. This formwork is made primarily of high-quality birch and poplar wood, with a surface material of highly waterproof phenolic resin impregnated paper. Supported by advanced and rigorous processing technology, the phenolic resin-coated plywood formwork has a smooth and flat surface, featuring high strength, light weight, large size, strong waterproofing, good construction performance, easy demolding, and multiple reuses. According to the design requirements of this project, 15mm thick prefabricated tongue-and-groove wooden formwork is selected. This formwork consists of two semicircles. During use, the two semicircles are directly joined together. The formwork is reinforced with 50mm x 3mm steel strips, which are automatically bent and welded in the factory. Connections are made using 8.8 grade fastening bolts. The horizontal joints between the two semicircles are determined based on the number of sections.

[0003] However, when using 8.8 grade fastening bolts to connect the connecting handles at the ends of the steel strips, the connecting handles protrude, and since the cylindrical formwork to be constructed requires multiple steel strips to be tied at equal intervals, workers are prone to getting their clothes or ropes caught on the protruding connecting parts when tying other steel strips during the up-and-down movement, which affects work efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a node protection structure and a concrete cylindrical formwork reinforcement device to address the above-mentioned problems.

[0005] The technical solution adopted by this utility model is: a node protection structure, provided at the connection node of the steel strip of the concrete cylindrical formwork, comprising: The protective shell is fitted over the outside of the steel strip connection node. The inner two end side walls are slidably engaged with the steel strip connection node. The end of the protective shell is provided with a bottom opening for protecting the steel strip connection node. The sealing component is detachably located at the bottom opening of the protective shell. It has a locking component inside that can lock the steel strip connection node and is used to seal the bottom opening of the protective shell.

[0006] Using the above-mentioned technical means, the protective shell is slidably snapped onto the steel strip connection node. By using the protective shell and the sealing component together, the connection node of the steel strip is completely wrapped to eliminate sharp or protruding edges. In addition, the locking component inside the sealing component can lock the steel strip connection node, thereby improving the stability of the protective structure.

[0007] In some embodiments, the connecting node includes a first connecting handle, a second connecting handle, a bolt, and a nut. One end of the steel strip is connected to the first connecting handle, and the other end of the steel strip is connected to the second connecting handle. The first connecting handle and the second connecting handle have through holes on the same axis. The bolt passes through the through holes of the first connecting handle and the second connecting handle and cooperates with the nut to achieve threaded locking of the first connecting handle and the second connecting handle.

[0008] In some embodiments, a first slot is provided on the side wall inside the protective shell corresponding to the first connecting handle, the first slot being able to slide with the bolt head, and a second slot is provided on the side wall inside the protective shell corresponding to the second connecting handle, the second slot being able to slide with the end of the bolt away from the bolt head.

[0009] In some embodiments, the sealing member includes a sealing plate and side inserts. The sealing plate has side inserts at both ends, which can be inserted into the first slot and the second slot respectively. The sealing plate has a locking member on the plate surface facing the bolt, which can lock the bolt. The sealing plate has a first receiving groove and a second receiving groove on the plate surface facing the bolt, which correspond to the first connecting handle and the second connecting handle respectively.

[0010] In some embodiments, the locking element includes a locking bracket, a connecting plate, and a retaining ring. The locking bracket is connected to the sealing plate, and the end of the locking bracket away from the sealing plate is connected to the retaining ring via the connecting plate. The retaining ring can engage the bolt under elastic action.

[0011] In some embodiments, the outer wall of the side insert is provided with a rubber sheet that can abut against the first slot or the second slot.

[0012] In some embodiments, the rubber sheet is provided with a beveled groove.

[0013] In some embodiments, the sidewall of the sealing plate is provided with an opening slot.

[0014] In some embodiments, the outer wall of the protective shell is provided with anti-slip texture, and the corners of the outer wall of the protective shell are rounded.

[0015] Another technical solution adopted by this utility model is: a concrete cylindrical formwork reinforcement device, comprising: Two semi-circular templates can be joined together to form a cylindrical template; Multiple steel strips are spaced apart and fitted over the outside of the cylindrical formwork; The node connection structure, located at the joint of the steel strip, can fix the steel strip. The node protection structure is installed on the node connection structure and can protect the node connection structure.

[0016] The beneficial effects of this utility model are: 1. By installing a protective shell and detachable sealing components, the steel strip connection node is completely enclosed. The protective shell, fitted over the connection node, can be designed with a streamlined shape or a smoothly transitioning curved surface to eliminate sharp or protruding edges. Both ends of the protective shell slide and engage with the steel strip, ensuring stable installation without interfering with the original function of the steel strip. The detachable sealing components facilitate installation and subsequent formwork removal and maintenance, while internal locking mechanisms prevent accidental detachment during use. This node protection structure effectively conceals and smooths out the originally protruding connection area, significantly reducing the risk of snagging and collisions, thereby solving problems affecting construction efficiency and safety. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the steel strip and node connection structure.

[0018] Figure 2 This is a first-view structural diagram of the protective shell in the node protection structure.

[0019] Figure 3 This is a second-view structural diagram of the protective shell in the node protection structure.

[0020] Figure 4 This is a schematic diagram of the sealing component in the node protection structure.

[0021] Figure 5 This is a structural schematic diagram of a concrete cylindrical formwork reinforcement device.

[0022] Explanation of reference numerals in the attached figures: 1. Steel strip; 2. Protective shell; 3. Second connecting handle; 4. Anti-slip texture; 5. Bottom opening; 6. Sealing plate; 7. Positioning bracket; 8. Side insert block; 12. First connecting handle; 22. First slot; 23. Second slot; 60. Opening slot; 62. First receiving slot; 63. Second receiving slot; 71. Connecting plate; 72. Snap ring; 81. Rubber sheet; 82. Beveled groove.

[0023] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0024] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.

[0025] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.).

[0026] The term "based on," as used herein, describes one or more factors that influence the determination. This term does not exclude additional factors influencing the determination. That is, the determination may be based solely on these factors or at least partially on them. Consider the phrase "A is determined based on B." In this case, B is the factor influencing the determination of A, and such phrases do not exclude the possibility that the determination of A may also be based on C. In other instances, A may be determined solely on B. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0028] Example 1: Combination Figures 1 to 4 As shown, this embodiment is a node protection structure located at the connection node of the steel strip 1 in the concrete cylindrical formwork. It includes a protective shell 2, a sealing element, and a locking element. The protective shell 2 is fitted over the outside of the connection node of the steel strip 1. The inner end walls of the protective shell 2 are slidably engaged with the connection node of the steel strip 1. The end of the protective shell 2 has a bottom opening 5. The protective shell 2 is used to protect the connection node of the steel strip 1. A sealing element is detachably provided at the bottom opening 5 of the protective shell 2. The sealing element contains a locking element capable of locking the connection node of the steel strip 1, and the sealing element is used to seal the bottom opening 5 of the protective shell 2.

[0029] In some implementation schemes, such as Figure 1 As shown, the connecting node includes a first connecting handle 12, a second connecting handle 3, a bolt, and a nut. One end of the steel strip 1 is connected to the first connecting handle 12, and the other end of the steel strip 1 is connected to the second connecting handle 3. The first connecting handle 12 and the second connecting handle 3 have through holes on the same axis. The bolt passes through the through holes of the first connecting handle 12 and the second connecting handle 3, and cooperates with the nut to achieve threaded locking of the first connecting handle 12 and the second connecting handle 3.

[0030] In some implementation schemes, such as Figure 2 and Figure 3 As shown, the protective shell 2 has a first slot 22 on the side wall corresponding to the first connecting handle 12 inside, which can slide with the bolt head. The protective shell 2 has a second slot 23 on the side wall corresponding to the second connecting handle 3 inside, which can slide with the end of the bolt away from the bolt head.

[0031] By setting the first slot 22 and the second slot 23 on the inner wall of the protective shell, which slide and engage with the bolt head and end respectively, the protective shell 2 can be quickly positioned and stably engaged on the steel strip 1 connection node, avoiding rotation or axial displacement of the protective shell 2 during use, and providing a guide reference for the insertion of the sealing component.

[0032] Furthermore, the outer wall of the protective shell 2 is provided with anti-slip texture 4, and the corners of the outer wall of the protective shell 2 are rounded.

[0033] By incorporating anti-slip texture 4, the stability of hand or tool grip is improved, especially in wet environments to prevent slippage. Rounding the edges eliminates sharp corners, preventing scratches to workers' clothing or skin.

[0034] In some implementation schemes, such as Figure 4 As shown, the sealing component includes a sealing plate 6 and side inserts 8. The sealing plate 6 has side inserts 8 at both ends, and the side inserts 8 at both ends can be inserted into the first slot 22 and the second slot 23 respectively. The sealing plate 6 has a locking component that can lock the bolt on the plate surface facing the bolt. The sealing plate 6 has a first receiving groove 62 and a second receiving groove 63 on the plate surface facing the bolt. The first receiving groove 62 and the second receiving groove 63 correspond to the first connecting handle 12 and the second connecting handle 3 respectively.

[0035] The sealing plate 6 is embedded into the slot through the side insert 8, which enables tool-free quick installation / removal. The receiving slot matches the shape of the connecting handle to avoid internal gaps that may cause shaking or stress concentration. While sealing the opening, it completely wraps the connecting node to achieve all-round protection.

[0036] Furthermore, the outer wall of the side insert 8 is provided with a rubber sheet 81 that can abut against the first slot 22 or the second slot 23.

[0037] By providing a rubber sheet 81 on the outer wall of the side insert 8, the rubber sheet 81 abuts against the inner wall of the slot. The rubber sheet 81 is deformed by compression, which can provide stability for the sealing plate 6 to be inserted into the bottom opening 5 and prevent the sealing part from loosening and falling off.

[0038] Furthermore, the rubber sheet 81 is provided with a beveled groove 82.

[0039] The oblique groove 82 enables the rubber sheet 81 to have adaptive compression deformation capability, so that the side insert 8 can be locked when inserted to a certain depth, and it is easier to fit the groove wall with different tolerances when inserted into the groove, which can also improve the smoothness of installation, while ensuring the sealing and clamping force after compression. Furthermore, the side wall of the sealing plate 6 is provided with an opening groove 60.

[0040] By setting the opening groove 60, it is easy for workers to use their fingers or tools to grasp and pry the sealing plate 6 for disassembly.

[0041] In some implementations, the locking element includes a locking frame 7, a connecting plate 71, and a retaining ring 72. The locking frame 7 is connected to the sealing plate 6, and the end of the locking frame 7 away from the sealing plate 6 is connected to the retaining ring 72 via the connecting plate 71. The retaining ring 72 can engage the bolt under elastic action.

[0042] The retaining ring 72 clamps the bolt under elastic action, preventing the nut from loosening or the bolt from accidentally coming out, improving the vibration resistance and anti-loosening ability of the connection node, and enhancing the stability of the overall template system.

[0043] The implementation principle of a node protection structure in this embodiment is as follows: This node protection structure is suitable for standard steel strip 1 connection. For the core problem that the steel strip 1 connection node has an outward protruding structure, which is easy for workers to snag clothing and ropes when climbing or binding, an external covering isolation is adopted to hide the dangerous protruding part inside the smooth shell.

[0044] By designing the interior of the protective shell 2 according to the geometric features of the connection node, the first slot 22 matches the bolt head, and the second slot 23 matches the bolt tail, ensuring that the protective shell 2 can accurately slide in and engage with the connection node. The sealing plate 6 is inserted from the bottom opening 5 of the protective shell 2, and the side insert 8 is embedded in the slot to form a limit. The retaining ring 72 on the sealing plate 6 holds the bolt shank tightly to prevent the bolt from loosening or the protective structure from falling off. At the same time, the rubber sheet 81 and the oblique groove 82 provide flexible sealing and self-adaptive compression, taking into account both anti-loosening and cushioning.

[0045] By using a modular and detachable external protective structure, the protruding parts of the steel strip 1 connection node are fully covered and functionally enhanced, thereby eliminating construction interference, improving safety and operational efficiency, while not changing the mechanical properties and turnover characteristics of the original template.

[0046] Example 2: Combination Figure 5 As shown, this embodiment is a concrete cylindrical formwork reinforcement device, including two semi-circular formworks, multiple steel strips 1, a node connection structure, and the node protection structure described in Embodiment 1. The two semi-circular formworks can be joined together to form a cylindrical formwork. Multiple steel strips 1 are spaced apart and sleeved on the outside of the cylindrical formwork. The joints of the steel strips 1 are provided with node connection structures, which can fix the steel strips 1. The node connection structure is provided with node protection structures, which can protect the node connection structure.

[0047] After the steel strip 1 is wrapped around the cylindrical template, the first connecting handle 12 and the second connecting handle 3 are fastened with bolts so that the steel strip 1 can reinforce the template. The bottom opening 5 of the protective shell 2 is folded in half and inserted into the upper part of the first connecting handle 12. At this time, the first slot 22 moves down along the bolt head end and the second slot 23 moves down along the bolt tail end. Thus, when the top of the protective shell 2 is blocked by the upper ends of the first connecting handle 12 and the second connecting handle 3, the protective shell 2 is inserted into place.

[0048] Then, the sealing plate 6 is aligned with the bottom opening 5 and pressed down. The sealing plate 6 will fit inside the bottom opening 5. When it encounters a bolt, the retaining ring 72 on the retaining bracket 7 will deform and lock onto the bolt. The side inserts 8 on the left and right sides of the sealing plate 6 can be inserted into the first retaining groove 22 and the second retaining groove 23. During this process, the rubber sheet 81 is compressed and deformed, thus providing stability for the sealing plate 6 to be locked into the bottom opening 5. The edges of the outer wall of the protective shell 2 are rounded to protect the first connecting handle 12 and the second connecting handle 3, reducing the risk of the edges coming into contact with clothing and the body and avoiding snagging that would affect work efficiency.

[0049] The opening slot 60 provided on the sealing plate 6 allows the sealing plate 6 to be removed from the bottom opening 5 by using a fingernail or tool, thus enabling the protective shell 2 to be disassembled and reused for the next use.

[0050] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A node protection structure, characterized in that, The connection node of the steel strip (1) provided in the concrete cylindrical formwork includes: The protective shell (2) is fitted on the outside of the steel strip (1) connection node. The inner two end side walls are slidably engaged with the steel strip (1) connection node. The end of the protective shell (2) is provided with a bottom opening (5) for protecting the steel strip (1) connection node. The sealing component is detachably installed at the bottom opening (5) of the protective shell (2), and has a locking component inside that can lock the connection node of the steel strip (1) to seal the bottom opening (5) of the protective shell (2).

2. The node protection structure according to claim 1, characterized in that: The connection node includes a first connecting handle (12), a second connecting handle (3), a bolt, and a nut. One end of the steel strip (1) is connected to the first connecting handle (12), and the other end of the steel strip (1) is connected to the second connecting handle (3). The first connecting handle (12) and the second connecting handle (3) have through holes on the same axis. The bolt passes through the through holes of the first connecting handle (12) and the second connecting handle (3) and cooperates with the nut to achieve threaded locking of the first connecting handle (12) and the second connecting handle (3).

3. A node protection structure according to claim 2, characterized in that: The protective shell (2) has a first slot (22) on the side wall corresponding to the first connecting handle (12) inside. The first slot (22) can slide with the head of the bolt. The protective shell (2) has a second slot (23) on the side wall corresponding to the second connecting handle (3) inside. The second slot (23) can slide with the end of the bolt away from the head.

4. A node protection structure according to claim 3, characterized in that: The sealing component includes a sealing plate (6) and side inserts (8). The sealing plate (6) has side inserts (8) at both ends. The side inserts (8) at both ends can be inserted into the first slot (22) and the second slot (23) respectively. The sealing plate (6) has a locking component that can lock the bolt on the plate surface facing the bolt. The sealing plate (6) has a first receiving groove (62) and a second receiving groove (63) on the plate surface facing the bolt. The first receiving groove (62) and the second receiving groove (63) correspond to the first connecting handle (12) and the second connecting handle (3) respectively.

5. A node protection structure according to claim 4, characterized in that: The locking component includes a locking frame (7), a connecting plate (71), and a retaining ring (72). The locking frame (7) is connected to the sealing plate (6). The end of the locking frame (7) away from the sealing plate (6) is connected to the retaining ring (72) via the connecting plate (71). The retaining ring (72) can engage the bolt under elastic action.

6. A node protection structure according to claim 4, characterized in that: The outer wall of the side insert (8) is provided with a rubber sheet (81) that can abut against the first slot (22) or the second slot (23).

7. A node protection structure according to claim 6, characterized in that: The rubber sheet (81) is provided with a beveled groove (82).

8. A node protection structure according to claim 4, characterized in that: The sealing plate (6) has an opening groove (60) on its side wall.

9. A node protection structure according to claim 3, characterized in that: The outer wall of the protective shell (2) is provided with anti-slip texture (4), and the corners of the outer wall of the protective shell (2) are rounded.

10. A concrete cylindrical formwork reinforcement device, characterized in that, include: Two semi-circular templates can be joined together to form a cylindrical template; Multiple steel strips (1) are spaced apart and fitted onto the outside of the cylindrical template; The node connection structure is located at the connection of the steel strip (1) and can fix the steel strip (1); The node protection structure according to any one of claims 1 to 9 is disposed on the node connection structure and can protect the node connection structure.

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