Limiting components and fixing devices for reinforcing cages

Abstract

This utility model provides a limiting component and a fixing device for a reinforcing cage. The limiting component, used to limit the protective layer pad, includes: a limiting component body, which includes a first surface and a second surface arranged opposite to each other along a first direction, and the limiting component body has a thickness value in the first direction, the thickness value being equal to the thickness of the protective layer pad; a hook connected to the limiting component body for hanging on the mold of the tunnel segment, the first surface being in contact with the mold surface; and a groove located on the limiting component body and recessed from the second surface of the limiting component body to the first surface along the first direction. The limiting component can accurately position the reinforcing cage in the mold without adjusting the protective layer pad, reducing manual operation time and effort, accelerating the production pace, and reducing unsafe factors, thus having a wide range of applications.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling technology, and in particular to a limiting component and a fixing device for a steel cage. Background Technology

[0002] In modern construction, tunnel segments are crucial components, and the installation accuracy of their reinforcing cages has a critical impact on the overall project quality. However, in practice, many difficulties are encountered when installing the reinforcing cages into the formwork.

[0003] Currently, the concrete cover layer from the outer edge of the reinforcing bars to the surface of structural members, i.e., the protective layer, is typically achieved using specialized insulation spacers. These spacers are manually installed on the reinforcing cage, with strict requirements on their quantity and spacing, to ensure that the protective layer at each location of the member meets standards. However, existing technology has significant drawbacks. On the one hand, the specialized insulation spacers primarily function to limit the protective layer after the reinforcing cage is accurately positioned. During the placement of the reinforcing cage into the mold, rapid positioning is not possible, requiring repeated movement of the cage to ensure the protective layer meets requirements. On the other hand, when adjusting the position of the reinforcing cage, the spacers are prone to deflection or even detachment, leading to deviations in the protective layer, requiring operators to repeatedly adjust and secure the spacers. Furthermore, when hoisting the reinforcing cage and placing it into the mold, the cage swings back and forth in the air, requiring two operators to simultaneously adjust its horizontal position at both ends to ensure it is placed and lowered into the mold at the same time. This not only increases labor costs but also reduces construction efficiency.

[0004] Therefore, how to reduce the difficulty of placing the steel cage into the formwork, and how to reduce or eliminate the problem of unevenness of the protective layer spacers on the four sides of the steel cage, are the technical problems that urgently need to be solved. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a limiting component and a fixing device for the rebar cage. The limiting component can accurately position the rebar cage in the mold without adjusting the protective layer pad, reducing manual operation time and effort, speeding up the production pace and reducing unsafe factors, and has a wide range of applications.

[0006] To address the aforementioned problems, this utility model provides a limiting component for limiting a protective layer pad, comprising: a limiting component body, the limiting component body including a first surface and a second surface arranged opposite to each other along a first direction, the limiting component body having a thickness value in the first direction, the thickness value being equal to the thickness of the protective layer pad; a hook connected to the limiting component body for hanging on a mold of a tunnel segment, the first surface being in contact with the surface of the mold; and a groove located on the limiting component body and recessed along the first direction from the second surface of the limiting component body towards the first surface.

[0007] Optionally, the hook is L-shaped.

[0008] Optionally, the hook and the limiting member body can be detachably or fixedly connected.

[0009] Optionally, the hook includes a connecting part connected to the main body of the limiting member and a hanging part connected to the connecting part, wherein the connecting part is retractable or non-retractable.

[0010] Optionally, the limiting member body further includes a third surface, which is perpendicular to the first surface and the second surface. The hook is located on the third surface, and the number of hooks is at least two, with at least two hooks symmetrically distributed on both sides of the groove.

[0011] Optionally, one sidewall of the groove also extends to the third surface.

[0012] Optionally, the area of ​​the groove is smaller than the area of ​​the second surface, the shape of the groove is rectangular, and the shape of the main body of the limiting member is cuboid or cube.

[0013] Optionally, the depth of the groove in the first direction is less than the thickness value.

[0014] This utility model also provides a fixing device for a steel cage, comprising: a mold for a shield tunnel segment having a receiving cavity for accommodating the steel cage; at least two of the above-mentioned limiting members, wherein the at least two limiting members are respectively located on two adjacent side walls of the receiving cavity.

[0015] Optionally, the limiting members are located at the axis of symmetry of the sidewall.

[0016] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0017] In the technical solution of this utility model's limiting component, the limiting component is used to limit the protective layer pad block, including a limiting component body, the limiting component body including a first surface and a second surface arranged opposite to each other along a first direction, the limiting component body having a thickness value in the first direction, the thickness value being equal to the thickness of the protective layer pad block; a hook connected to the limiting component body for hanging on the mold of the shield tunnel segment, the first surface being in contact with the mold surface; a groove located on the limiting component body and recessed from the second surface of the limiting component body to the first surface along the first direction; subsequently, when the reinforcing cage is placed into the mold, as long as the reinforcing cage... The cage falls into the mold close to the limiting component, ensuring that the gaps around the rebar cage are consistent. This allows for uniform thickness of the protective layer spacers when filling the gaps, improving the uniformity of the protective layer spacer thickness and reducing cage movement. It also prevents damage to the protective layer spacers at the bottom of the cage, reduces the difficulty of placing the cage into the mold, and positions the cage. Furthermore, the grooves facilitate the quick removal of the limiting component from the mold using a pry bar, improving disassembly efficiency, reducing manual operation difficulty, and accelerating construction progress. Attached Figure Description

[0018] Figure 1 This is a front view of the limiting member in one embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Cross-sectional view of AA;

[0020] Figure 3 for Figure 1 The left view;

[0021] Figure 4 for Figure 1 Top view;

[0022] Figure 5 This is a schematic diagram of the structure of the fixing device for the reinforcing cage in one embodiment of the present invention;

[0023] Figure 6 This is an assembly drawing of the mold, reinforcing cage, and limiting components for a shield tunnel segment in one embodiment of the present invention. Detailed Implementation

[0024] As mentioned in the background technology, there are still many problems in the manufacturing process of tunnel segments.

[0025] Based on this, this technical solution provides a limiting component for limiting the protective layer pad, including a limiting component body, the limiting component body including a first surface and a second surface arranged opposite to each other along a first direction, the limiting component body having a thickness value in the first direction, the thickness value being equal to the thickness of the protective layer pad; a hook connected to the limiting component body for hanging on the mold of the shield tunnel segment, the first surface being in contact with the mold surface; a groove located on the limiting component body and recessed from the second surface of the limiting component body to the first surface along the first direction; subsequently, when the reinforcing cage is placed into the mold, as long as the reinforcing cage is placed... The cage falls into the mold close to the limiting component, ensuring that the gaps around the rebar cage are consistent. This allows for uniform thickness of the protective layer spacers when filling the gaps, improving the uniformity of the protective layer spacer thickness and reducing cage movement. It also prevents damage to the protective layer spacers at the bottom of the cage, reduces the difficulty of placing the cage into the mold, and positions the cage. Furthermore, the grooves facilitate the quick removal of the limiting component from the mold using a pry bar, improving disassembly efficiency, reducing manual operation difficulty, and accelerating construction progress.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] First, please refer to the reference. Figures 1 to 4 A limiting member 10 includes a limiting member body 2, a hook 1, and a groove 3.

[0028] In this embodiment, the limiting member 10 is used to limit the protective layer pad. The limiting body includes a first surface 2-1 and a second surface 2-2 arranged opposite to each other along the first direction X. The limiting member body 2 has a thickness value d in the first direction X, and the thickness value d is equal to the thickness of the protective layer pad. The hook 1 is connected to the limiting member body 2 and is used to hang on the mold of the shield tunnel segment. The first surface 2-1 is used to fit against the surface of the mold. The groove 3 is located on the limiting member body 2 and is recessed from the second surface 2-2 of the limiting member body 2 to the first surface 2-1 along the first direction X.

[0029] In this embodiment, on the one hand, the hook 1 is designed to allow the limiting member 10 to be stably hung on the shield tunnel segment mold. The first surface 2-1 is in contact with the surface of the shield tunnel segment mold, enhancing the stability of the limiting member 10 and ensuring the accurate positioning of the protective layer pad. At the same time, the thickness of the limiting member body 2 is consistent with the thickness of the protective layer pad, ensuring that after the reinforcement cage is placed, the gap between the perimeter of the reinforcement cage and the shield tunnel segment mold is accurately controlled. This gap is exactly equal to the thickness of the protective layer pad, precisely limiting the protective layer pad, preventing the protective layer pad from shifting or being damaged, improving construction quality, and ensuring uniform protective layer thickness between the reinforcement cage and the mold. On the other hand, after the reinforcement cage is placed into the shield tunnel segment mold, a pry bar can be inserted into the groove 3, and the limiting member 10 can be easily removed through leverage, improving disassembly efficiency, reducing manual operation difficulty, and accelerating construction progress.

[0030] In this embodiment, the hook 1 is L-shaped. The L-shaped hook 1 can be quickly and accurately hung on the shield tunnel segment mold, simplifying the installation process, improving installation efficiency, and reducing time and labor costs. In addition, the L-shaped hook 1 provides stable support, enhances the reliability of the connection between the limiting member 10 and the mold, ensures that the limiting member 10 will not easily fall off during construction, and effectively fixes the protective layer pad.

[0031] In this embodiment, the hook 1 is fixedly connected to the limiting component body 2. The fixed connection ensures that the hook 1 and the limiting component body 2 are firmly connected, avoiding loosening and failure, and meeting the stability requirements in complex environments.

[0032] In some embodiments, the hook 1 and the limiting component body 2 can be detachable, allowing for quick replacement or adjustment as needed, extending the service life of the limiting component 10, and adapting to different mold specifications and construction scenarios.

[0033] In this embodiment, please refer to Figure 3 The hook 1 includes a connecting part 1-1 connected to the limiting member body 2 and a hanging part 1-2 connected to the connecting part 1-1. The connecting part 1-1 is non-extendable.

[0034] In some embodiments, the connecting part 1-1 may also be configured to be telescopic. The telescopic connecting part 1-1 enhances the adaptability of the limiting member 10 to molds of different sizes or shapes, facilitates adjustment, improves versatility and practicality, and reduces customization costs and time caused by differences in mold specifications.

[0035] In this embodiment, the limiting component body 2 further includes a third surface 2-3, which is perpendicular to the first surface 2-1 and the second surface 2-2. The hook 1 is located on the third surface 2-3, and the number of hooks 1 is at least two. At least two hooks 1 are symmetrically distributed on both sides of the groove 3. The third surface 2-3 is provided with at least two symmetrically distributed hooks 1, which increases the contact points with the mold, makes the limiting component 10 bear force evenly, prevents tilting, sliding or rotation, improves stability, ensures the accurate position of the protective layer pad, and the symmetrically distributed hooks 1 design makes the limiting component 10 more balanced when under force, avoids structural deformation or damage caused by uneven force, and extends the service life of the limiting component 10. In addition, the symmetrically distributed hooks 1 design on both sides of the groove 3 allows the pry bar to be inserted into the groove 3 from either side during disassembly, providing multiple disassembly methods and improving operational flexibility.

[0036] In this embodiment, one sidewall of the groove 3 extends to the third surface 2-3, that is, the third surface 2-3 exposes the groove 3 along a direction perpendicular to the third surface 2-3. This increases the angle and position selection for inserting the pry bar, allowing the limiting member 10 to be disassembled smoothly even in complex construction environments, thus improving construction efficiency. In addition, the extension of the sidewall of the groove 3 to the third surface 2-3 makes the main structure compact and robust, enhances the load-bearing capacity, better protects the internal pads, and extends the service life. Furthermore, the design of the groove 3 extending to the third surface 2-3 helps to disperse stress, avoid structural damage caused by stress concentration, and improve the durability of the limiting member 10.

[0037] In this embodiment, the area of ​​the groove 3 is smaller than the area of ​​the second surface 2-2, the shape of the groove 3 is rectangular, and the shape of the limiting member body 2 is cuboid or cube. The cuboid or cube shape of the limiting member body 2 and the rectangular shape of the groove 3 facilitate standardized production and quality control, improve production efficiency, reduce production costs, facilitate quality inspection, and ensure consistent performance and quality. Furthermore, the rectangular groove 3 facilitates the insertion of a pry bar, ensuring efficient disassembly, while also guaranteeing the stability of the limiting member 10 during installation and use.

[0038] In this embodiment, the depth h of the groove 3 in the first direction X is less than the thickness d. The purpose is to prevent the groove 3 from penetrating the main body 2 of the limiting member. The appropriate depth ensures that there are sufficient support points when the pry bar is inserted, improving the stability of disassembly. At the same time, it ensures the structural integrity of the limiting member 10 during use, thereby reducing the difficulty of prying up the limiting member 10 with a pry bar later. In addition, it ensures that the remaining thickness of the main body can withstand external forces, preventing the strength from being reduced due to the groove 3 being too deep, ensuring the stability and reliability of use, and extending the service life.

[0039] Accordingly, this utility model also provides a fixing device for a steel cage, please refer to... Figure 5 and Figure 6 The system includes a mold 4 for the tunnel lining segments, having a receiving cavity (not marked in the figure) for accommodating the reinforcing cage 5; at least two of the aforementioned limiting members 10, with the at least two limiting members 10 respectively located on two adjacent side walls of the receiving cavity; the reinforcing cage 5 fixing device uses at least two limiting members 10 respectively located on adjacent side walls of the receiving cavity, making the fixing of the reinforcing cage 5 in the mold more stable, reducing quality problems caused by the displacement of the reinforcing cage 5 during construction, improving the overall quality of the tunnel lining segments, and limiting the gap m of the protective layer pads from multiple directions, ensuring the accuracy of the filling of the protective layer pads and the uniformity of the thickness, enhancing the fixing effect, preventing the reinforcing cage 5 from displacement and deformation, ensuring that the gap size between the reinforcing cage 5 and the mold 4 of the tunnel lining segments is uniform, ensuring accurate positioning and uniform protective layer thickness. In addition, the groove 3 design on the multiple limiting members 10 allows multiple pry bars to be used simultaneously during disassembly to quickly remove all the limiting members 10, significantly improving the disassembly efficiency of the reinforcing cage 5 fixing device and shortening the construction cycle.

[0040] In this embodiment, the limiting members 10 are located at the axis of symmetry of the sidewall, so that the reinforcing cage 5 is subjected to uniform force, avoiding local deformation and stress concentration, improving the forming quality, and ensuring the uniform and stable structure of the shield tunnel segment. In addition, the symmetrically distributed limiting members 10 allow the crowbar to be inserted into the groove 3 from symmetrical positions at the same time during disassembly, providing a balanced disassembly force, reducing the jamming phenomenon of the limiting members 10 during the disassembly process, simplifying the construction operation, and improving the safety and efficiency of disassembly. The arrangement of the limiting members 10 at the axis of symmetry helps to ensure the centered positioning of the reinforcing cage 5 in the mold, further improving the quality and consistency of the shield tunnel segment.

[0041] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A limiting member for limiting a protective layer pad, characterized in that, include: The limiting component body includes a first surface and a second surface arranged opposite to each other along a first direction, and the limiting component body has a thickness value in the first direction, the thickness value being equal to the thickness of the protective layer pad. The hook connected to the main body of the limiting component is used to hang on the mold of the tunnel segment, and the first surface is used to fit against the surface of the mold; A groove located on the main body of the limiting member and recessed from the second surface of the main body of the limiting member toward the first surface along the first direction.

2. The limiting member as described in claim 1, characterized in that, The hook is L-shaped.

3. The limiting member as described in claim 1, characterized in that, The hook can be detachably or fixedly connected to the main body of the limiting component.

4. The limiting member as described in claim 1, characterized in that, The hook includes a connecting part connected to the main body of the limiting member and a hanging part connected to the connecting part. The connecting part may be retractable or non-retractable.

5. The limiting member as described in claim 1, characterized in that, The limiting component body also includes a third surface, which is perpendicular to the first surface and the second surface. The hook is located on the third surface, and the number of hooks is at least two, with at least two hooks symmetrically distributed on both sides of the groove.

6. The limiting member as described in claim 5, characterized in that, One sidewall of the groove also extends to the third surface.

7. The limiting member as described in claim 1, characterized in that, The area of ​​the groove is smaller than the area of ​​the second surface, the shape of the groove is rectangular, and the shape of the main body of the limiting member is cuboid or cube.

8. The limiting member as described in claim 1, characterized in that, The depth of the groove in the first direction is less than the thickness value.

9. A fixing device for a reinforcing cage, characterized in that, include: The mold for the tunnel lining segment has a receiving cavity for accommodating the reinforcing cage; At least two limiting members as described in any one of claims 1 to 8, wherein the at least two limiting members are respectively located on two adjacent side walls of the receiving cavity.

10. The fixing device for the reinforcing cage as described in claim 9, characterized in that, The limiting members are located at the axes of symmetry of the sidewalls.

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