Pipe jacking reinforcement cage limiting device

Abstract

The utility model relates to a kind of top pipe reinforcement cage limiting device, including the limiting base for fixing reinforcement cage body, limiting base includes several base wing plates;Two fixed plate assemblies of relative arrangement are installed on each base wing plate, and fixed plate assembly is respectively arranged at the both sides of reinforcement cage body;Fixed plate assembly includes the limiting vertical board of vertical base wing plate setting, and limiting vertical board is close to the side of reinforcement cage body and is provided with the reinforcement buckle for buckling the spiral hoop of reinforcement cage body.The utility model sets fixed plate assembly in multiple directions, realizes rigid constraint in the welding process of reinforcement cage, actively controls deformation from source, changes the mode of relying on artificial post-hoc knock adjustment;Through adjustable fixed plate assembly and reinforcement buckle, ensure that overall size meets design requirement, provide fundamental guarantee for subsequent engineering.

Description

Technical Field

[0001] This utility model relates to a limiting device for steel cages used in jacking pipes, and belongs to the field of building construction. Background Technology

[0002] Concrete pipe jacking is widely used in municipal utility tunnel projects because it has a relatively small environmental impact during construction. Its production quality is directly related to the long-term safety and durability of the project.

[0003] During the pouring of concrete jacking pipes, the reinforcing cage withstands the impact and vibration of the concrete, restrains the deformation of the concrete, provides tensile and flexural strength, and ensures that the thickness of the concrete cover meets the requirements. Therefore, the accuracy of the geometric dimensions and position of the reinforcing cage is crucial.

[0004] A reinforcing cage is a mesh-like cylindrical structure made of welded steel bars, which is highly susceptible to deformation during the welding process. Currently, for reinforcing cages that deform after welding, the main methods rely on manual experience to adjust them by tapping them locally before placing them into the mold, or using simple concrete or plastic spacers inside the mold to fix the position of the reinforcing bars. These are all remedial measures, which are not only labor-intensive and inefficient, but also fail to allow for overall calibration of the reinforcing cage. Therefore, improvements are urgently needed. Utility Model Content

[0005] To overcome the shortcomings of lacking a limiting device for the steel cage in pipe jacking, which easily leads to deformation during welding, this utility model designs a limiting device for the steel cage in pipe jacking. This device limits the steel cage during the welding process, ensuring the overall accuracy of steel cage production. It avoids the tedious and inefficient manual correction of the steel cage after welding, improves the production qualification rate of the steel cage, and enhances the quality of subsequent projects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A limiting device for a jacking pipe rebar cage includes a limiting base for fixing the rebar cage body. The limiting base includes several base wing plates. Two fixing plate assemblies are installed on each base wing plate and are respectively clamped to both sides of the rebar cage body. The fixing plate assembly includes a limiting upright plate that is perpendicular to the base wing plate. The limiting upright plate is provided with a rebar buckle for fastening the spiral stirrups of the rebar cage body on the side near the rebar cage body.

[0007] Furthermore, a connecting base is vertically fixedly installed at the bottom end of the limiting plate, the connecting base is detachably sleeved on the top of the base wing plate, and a reinforcing rib is fixedly installed between the connecting base and the limiting plate.

[0008] Furthermore, the connecting base is fixed to the base wing plate by several bolts.

[0009] Furthermore, a connecting plate is fixed to the fixed end of the rebar clip, and a positioning hole is opened on the connecting plate. Bolts pass through the positioning hole to fix the connecting plate to the limiting plate.

[0010] Furthermore, the number of base wing plates is at least six.

[0011] Compared with the prior art, this utility model has the following features and beneficial effects: This invention achieves rigid constraint during the welding process of the rebar cage by setting fixed plate components in multiple directions, actively controlling deformation from the source and changing the mode of relying on manual adjustment afterward. Through adjustable fixed plate components and rebar clips, it ensures that the overall dimensions meet the design requirements, providing a fundamental guarantee for subsequent projects. The device has a simple structure and is easy to operate, which can quickly complete the correction and fixing of the rebar cage, avoiding rework and repair due to deformation, and significantly improving production smoothness and first-pass yield. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the limiting base structure of this utility model; Figure 3 This is a schematic diagram of the fixed plate assembly structure of this utility model; Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0013] The attached diagram is labeled as follows: 1. Reinforcing cage body; 2. Limiting base; 3. Bolt; 5. Base wing plate; 6. Reinforcing bar buckle; 61. Connecting plate; 7. Fixing plate assembly; 71. Reinforcing rib plate; 72. Limiting upright plate; 73. Connecting base. Detailed Implementation

[0014] The present invention will now be described in more detail with reference to the embodiments.

[0015] like Figures 1 to 4 As shown, the jacking pipe rebar cage limiting device of this embodiment includes a limiting base 2 for fixing the rebar cage body 1. The limiting base 2 includes several base wing plates 5. Two fixing plate assemblies 7 are installed on each base wing plate 5 and are respectively clamped to both sides of the rebar cage body 1.

[0016] The base wing plate 5 provides a rigid foundation for the jacking pipe reinforcement cage limiting device, improving stability and ensuring that multiple limiting points are located on the same plane, keeping the reinforcement cage body 1 vertical and preventing the reinforcement cage body 1 from tilting during welding, which would lead to inaccurate welding positions and affect subsequent pouring processes. The base wing plate 5 increases the number of contact and support points between the device and the reinforcement cage body 1, distributing the constraint force to multiple positions on the circumference, and more evenly and effectively controlling and correcting the overall deformation of the reinforcement cage body 1, preventing local over-constraint or insufficient constraint.

[0017] The fixing plate assembly 7 includes a limiting plate 72 provided on the vertical base wing plate 5, and a steel bar buckle 6 for fastening the spiral stirrups of the steel cage body 1 is provided on the side of the limiting plate 72 near the steel cage body 1.

[0018] The limiting plate 72 ensures the uniform transmission of the constraint force, and multiple steel bar clips 6 work together to limit the steel cage body 1, thereby achieving the overall fixation of the steel cage body 1.

[0019] A connecting base 73 is vertically fixedly installed at the bottom end of the limiting plate 72. The connecting base 73 is detachably sleeved on the top of the base wing plate 5. A reinforcing rib 71 is fixedly installed between the connecting base 73 and the limiting plate 72.

[0020] The connecting base 73 is an inverted U-shaped structure, which is installed upside down on the base wing plate 5 and locked with bolts 3, realizing the quick fitting and installation of the fixing plate assembly 7. It can be adjusted according to construction needs, improving the applicability and efficiency of the tooling. The reinforcing rib plate 71 is a right-angled triangular structure, which effectively resists the huge lateral thrust generated when straightening the steel cage, prevents the limiting plate 72 from bending or shaking, and ensures the limiting accuracy for long-term use.

[0021] The fixed end of the rebar clip 6 is fixed with a connecting plate 61, and the connecting plate 61 has a positioning hole; the limiting plate 72 has an installation hole corresponding to the position of the connecting plate 61. The bolt 3 passes through the installation hole and the positioning hole to fix the connecting plate 61 to the limiting plate 72, providing a reliable and detachable fixing structure. Unlike welding fixing, the bolt 3 can firmly lock each component, and can be easily disassembled when adjustment or replacement is required.

[0022] The number of base wing plates 5 is at least 6.

[0023] The working principle of this utility model is as follows: the limiting base 2 is placed horizontally on the ground, the steel cage body 1 to be welded is placed on the limiting base 2, and the connecting base 73 is fitted onto the base wing plate 5.

[0024] Use the steel bar clip 6 to clamp the spiral stirrups of the steel cage body 1, align the mounting hole of the limiting plate 72 with the positioning hole of the connecting plate 61, pass the bolt 3 through the mounting hole and the positioning hole and fix the bolt 3 with the nut, fix the connecting plate 61 on the limiting plate 72, and use the bolt 3 to fix the limiting base 2 and the base wing plate 5 whose positions are determined.

[0025] After the fixing is completed, the steel cage body 1 is welded.

[0026] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A limiting device for reinforcing steel cages used in pipe jacking, characterized in that: It includes a limiting base (2) for fixing the steel cage body (1), the limiting base (2) includes several base wing plates (5); each base wing plate (5) is equipped with two oppositely arranged fixing plate assemblies (7), and the fixing plate assemblies (7) are respectively clamped on both sides of the steel cage body (1); The fixing plate assembly (7) includes a limiting plate (72) set on the vertical base wing plate (5), and the limiting plate (72) is provided with a steel bar buckle (6) for fastening the spiral stirrup of the steel cage body (1) on the side near the steel cage body (1).

2. The jacking pipe reinforcement cage limiting device according to claim 1, characterized in that: The bottom end of the limiting plate (72) is vertically fixed with a connecting base (73). The connecting base (73) is detachably sleeved on the top of the base wing plate (5). A reinforcing rib (71) is fixedly installed between the connecting base (73) and the limiting plate (72).

3. The jacking pipe reinforcement cage limiting device according to claim 2, characterized in that: The connecting base (73) is fixed to the base wing plate (5) by several bolts (3).

4. The limiting device for a jacking pipe reinforcement cage according to claim 2, characterized in that: The fixed end of the steel bar clip (6) is fixed with a connecting plate (61). The connecting plate (61) has a positioning hole. The bolt (3) passes through the positioning hole to fix the connecting plate (61) on the limiting plate (72).

5. The limiting device for a jacking pipe reinforcement cage according to claim 1, characterized in that: The number of base wing plates (5) is at least 6.

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