Three-wall embedded steel bar positioning mould

Abstract

The utility model discloses a three-wall embedded steel bar positioning mould, which relates to the technical field of bridge steel bar positioning and comprises an A-wall steel bar positioning plate, a first B-wall steel bar positioning plate, a second B-wall steel bar positioning plate, a ballast retaining wall steel bar positioning plate and a transverse positioning plate. First positioning grooves are formed in the side face of the A wall steel bar positioning plate and the side face of the ballast blocking wall steel bar positioning plate, one side of the first B wall steel bar positioning plate is attached to one side of the second B wall steel bar positioning plate, and second positioning grooves are formed in the side face of the first B wall steel bar positioning plate and the side face of the second B wall steel bar positioning plate. The first B wall steel bar positioning plate and the second B wall steel bar positioning plate are symmetrically arranged and are U-shaped; the positioning plate is convenient to manufacture and assemble, all parts are designed and manufactured according to standardization, for example, the material selection and grooving size of the positioning plate are clear, the transverse positioning plate clamping groove design facilitates inserting and assembling, the construction process is simplified, the tedious procedures of manual repeated measurement and adjustment are reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge rebar positioning technology, and in particular to a positioning jig for pre-embedded rebar in three walls. Background Technology

[0002] In bridge construction, the precise positioning of the reinforcing bars in the three embedded walls (A wall, B wall, and retaining wall) on the bridge deck is a core aspect of ensuring structural quality. Traditional construction methods rely heavily on manual measurement and temporary binding for rebar positioning, which presents the following significant problems: 1. Low positioning accuracy: Manual adjustments are susceptible to operational errors, resulting in significant deviations in rebar spacing and height, making it difficult to meet high-precision design requirements. This leads to rebar displacement during subsequent concrete pouring, affecting the structural load-bearing capacity. 2. Low construction efficiency: Each rebar requires repeated measurement and positioning, a cumbersome and time-consuming process, especially in complex bridge decks with multiple parallel walls, further reducing efficiency. 3. Poor fixing stability: Conventional temporary supports or simple clamps lack rigid limiting structures, making them prone to loosening during pouring and vibration, causing overall rebar misalignment.

[0003] In recent years, although some standardized positioning devices have emerged (such as the structure described in patent application number 202223121795.0), they still have limitations: the positioning guide bars used are made of HPB235Φ8 round steel, each cut to a length of 8cm, and welded to the guide bar fixing angle iron according to the design spacing, resulting in poor positioning accuracy and a relatively cumbersome welding process; in addition, the welding of the transverse connecting parts to the height limiting angle iron results in a large space occupation, making the positioning device inconvenient to move and difficult to meet the requirements of rapid turnover of multiple work surfaces in large-scale projects.

[0004] To address the aforementioned problems, this utility model proposes a bridge deck three-wall rebar limiting device based on the synergistic effect of side slotting of square steel and transverse positioning rod. While ensuring positioning accuracy, it also offers ease of construction and economy, effectively solving problems such as positioning deviation and inconvenience in turnover in existing technologies. Utility Model Content

[0005] This utility model provides a positioning jig for pre-embedded steel bars in three walls, which solves the technical problems of positioning deviation and inconvenience of turnover in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides a three-wall pre-embedded rebar positioning jig, including an A-wall rebar positioning plate, a first B-wall rebar positioning plate, a second B-wall rebar positioning plate, a retaining wall rebar positioning plate, and a transverse positioning plate; the A-wall rebar positioning plate and the retaining wall rebar positioning plate have first positioning grooves on their sides, the first B-wall rebar positioning plate and the second B-wall rebar positioning plate are attached to each other on one side, and the sides of both the first B-wall rebar positioning plate and the second B-wall rebar positioning plate have second positioning grooves, the first B-wall rebar positioning plate and the second B-wall rebar positioning plate are symmetrically arranged in a U-shape, and the bottom of the transverse positioning plate has a slot, which is inserted into the A-wall rebar positioning plate, the first B-wall rebar positioning plate, the second B-wall rebar positioning plate and the retaining wall rebar positioning plate respectively through the slot.

[0007] In some embodiments, the A-wall rebar positioning plate, the first B-wall rebar positioning plate, the second B-wall rebar positioning plate, and the retaining wall rebar positioning plate are all made of angle steel ∠100mm*100mm*10mm, the first positioning groove has a size of 40mm*20mm, and the second positioning groove has a size of 23mm*16mm.

[0008] In some embodiments, the A-wall reinforcement positioning plate, the first B-wall reinforcement positioning plate, the second B-wall reinforcement positioning plate, and the retaining wall reinforcement positioning plate are arranged in parallel, and the transverse positioning plate is perpendicular to the A-wall reinforcement positioning plate, the first B-wall reinforcement positioning plate, the second B-wall reinforcement positioning plate, and the retaining wall reinforcement positioning plate.

[0009] In some embodiments, a fastening assembly is provided on one side of the slot, the fastening assembly including a pressure plate welded to the side of the slot, one side of the pressure plate being flush with the inner side of the slot, and a threaded post fixedly installed on the other side of the pressure plate, a push rod being threadedly installed in the middle of the threaded post, and a rotating handle being provided at one end of the push rod.

[0010] In some embodiments, the side of the pressure plate is provided with a side groove for the top rod to pass through, and one end of the top rod is in contact with the side of the A wall reinforcement positioning plate, the first B wall reinforcement positioning plate, the second B wall reinforcement positioning plate or the retaining wall reinforcement positioning plate.

[0011] In some embodiments, a bottom groove is provided below the lateral positioning plate, and the bottom groove is disposed on the side of the fastening assembly.

[0012] Compared with related technologies, the positioning jig for pre-embedded steel bars in three walls provided by this utility model has the following beneficial effects:

[0013] This utility model provides a positioning jig for pre-embedded steel bars in three walls, which is convenient to manufacture and assemble. Each component is manufactured according to standardized design. For example, the material selection and groove size of the positioning plate are clearly defined, and the slot design of the horizontal positioning plate facilitates insertion and assembly. This simplifies the construction process, reduces the tedious process of repeated manual measurement and adjustment, and improves construction efficiency.

[0014] This utility model provides a positioning jig for pre-embedded steel bars in three walls, which can be assembled or disassembled as needed, reducing the weight of the device and facilitating the handling and operation of construction personnel. It meets the needs of rapid turnover of multiple work surfaces in large-scale projects and solves the problem of inconvenience in moving some existing standardized positioning devices. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the transverse positioning plate structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the fastening component of this utility model;

[0018] Figure 4 This is a diagram illustrating the effect of positioning the reinforcing bars according to this utility model.

[0019] Numbered in the diagram: 1. A-wall reinforcement positioning plate; 2. First B-wall reinforcement positioning plate; 3. Second B-wall reinforcement positioning plate; 4. Ballast wall reinforcement positioning plate; 5. First positioning groove; 6. Horizontal positioning plate; 7. Second positioning groove; 61. Slot; 62. Fastening component; 63. Bottom groove; 621. Pressure plate; 622. Threaded column; 623. Top rod; 624. Rotating handle. Detailed Implementation

[0020] Example 1

[0021] This embodiment provides a positioning jig for pre-embedded reinforcing bars in three walls, such as Figure 1-4As shown, the A-wall rebar positioning plate 1, the first B-wall rebar positioning plate 2, the second B-wall rebar positioning plate 3, and the retaining wall rebar positioning plate 4 are all made of angle steel ∠100mm*100mm*10mm. According to the design requirements, a first positioning groove 5 with a size of 40mm*20mm is precisely cut into the side of the A-wall rebar positioning plate 1 and the retaining wall rebar positioning plate 4. A second positioning groove 7 with a size of 23mm*16mm is precisely cut into the side of the first B-wall rebar positioning plate 2 and the second B-wall rebar positioning plate 3. It is ensured that the first B-wall rebar positioning plate 2 and the second B-wall rebar positioning plate 3 fit tightly together on one side, forming a symmetrical U-shaped structure. Simultaneously, a horizontal positioning plate 6 is fabricated, with a slot 61 cut into its bottom. The size of the slot 61 must ensure that it can be smoothly inserted into the A-wall rebar positioning plate 1, the first B-wall rebar positioning plate 2, the second B-wall rebar positioning plate 3, and the retaining wall rebar positioning plate 4, thereby achieving preliminary assembly. In this embodiment, the A-wall reinforcement positioning plate 1, the first B-wall reinforcement positioning plate 2, the second B-wall reinforcement positioning plate 3, and the ballast wall reinforcement positioning plate 4 are snapped onto the box girder formwork. During use, the device is placed on the side formwork flange plate, and the bridge deck reinforcement bars are installed one by one according to position 6 and the height of the limiting angle iron, ensuring accurate installation of the pre-embedded three-wall reinforcement bars in terms of position, spacing, and height. The A-wall reinforcement positioning plate 1 and the ballast wall reinforcement positioning plate 4 are the same size and can be used interchangeably. Since two reinforcement bars need to be installed in the first positioning groove 5 of the A-wall reinforcement positioning plate 1, its width is larger than the second positioning groove. The separate design of the first B-wall reinforcement positioning plate 2 and the second B-wall reinforcement positioning plate 3 facilitates the removal of the positioning fixture after the reinforcement bars are tied.

[0022] Example 2

[0023] Based on Example 1, ensure that the A-wall rebar positioning plate 1, the first B-wall rebar positioning plate 2, the second B-wall rebar positioning plate 3, and the retaining wall rebar positioning plate 4 are arranged in parallel. Place the transverse positioning plate 6 perpendicularly to all of them, and tightly insert it through the slot 61, so that the entire positioning jig forms a stable frame structure. This vertical and parallel arrangement effectively ensures the accuracy of positioning the embedded rebar, providing a precise reference for subsequent rebar installation.

[0024] Example 3

[0025] Based on Example 1, such as Figure 2-3As shown, a fastening assembly 62 is installed on one side of the slot 61, wherein a pressure plate 621 is welded to the side of the slot 61 to ensure that one side of the pressure plate 621 is flush with the inner side of the slot 61 so as not to obstruct the insertion. A threaded post 622 is fixedly installed on the other side of the pressure plate 621, and a push rod 623 is threadedly installed in the middle of the threaded post 622. A rotating handle 624 is provided at one end of the push rod 623. After the transverse positioning plate 6 is connected to the A wall reinforcement positioning plate 1, the first B wall reinforcement positioning plate 2, the second B wall reinforcement positioning plate 3, or the retaining wall reinforcement positioning plate 4, rotate the rotating handle 624 to move the top rod 623 along the threaded post 622. One end of the top rod 623 is tightly attached to the side of the corresponding reinforcement positioning plate. The side groove opened on the side of the pressure plate 621 provides space for the top rod 623 to move. In this way, the transverse positioning plate 6 is firmly connected to each reinforcement positioning plate, which greatly enhances the stability of the entire positioning jig and effectively avoids the loosening of components due to vibration and other factors during construction.

[0026] Example 4

[0027] Based on Embodiment 1, a bottom groove 63 is formed below the transverse positioning plate 6, and the bottom groove 63 is set on the side of the fastening component 62. The bottom groove 63 can reduce the weight of the transverse positioning plate 6 without affecting the function of the fastening component 62, making it easier for construction personnel to handle and operate.

Claims

1. A positioning jig for pre-embedded reinforcing bars in three walls, characterized in that: The system includes an A-wall reinforcement positioning plate, a first B-wall reinforcement positioning plate, a second B-wall reinforcement positioning plate, a retaining wall reinforcement positioning plate, and a transverse positioning plate. The A-wall reinforcement positioning plate and the retaining wall reinforcement positioning plate have first positioning grooves on their sides. The first B-wall reinforcement positioning plate and the second B-wall reinforcement positioning plate are attached to each other on one side. Both the first B-wall reinforcement positioning plate and the second B-wall reinforcement positioning plate have second positioning grooves on their sides. The first B-wall reinforcement positioning plate and the second B-wall reinforcement positioning plate are symmetrically arranged in a U-shape. The bottom of the transverse positioning plate has a slot, and the transverse positioning plate is inserted into the A-wall reinforcement positioning plate, the first B-wall reinforcement positioning plate, the second B-wall reinforcement positioning plate, and the retaining wall reinforcement positioning plate through the slot.

2. The positioning jig for pre-embedded reinforcing bars in three walls according to claim 1, characterized in that, The A-wall rebar positioning plate, the first B-wall rebar positioning plate, the second B-wall rebar positioning plate, and the retaining wall rebar positioning plate are all made of angle steel ∠100mm*100mm*10mm. The first positioning groove has a size of 40mm*20mm, and the second positioning groove has a size of 23mm*16mm.

3. The positioning jig for pre-embedded reinforcing bars in three walls according to claim 1, characterized in that, The A-wall reinforcement positioning plate, the first B-wall reinforcement positioning plate, the second B-wall reinforcement positioning plate, and the retaining wall reinforcement positioning plate are arranged in parallel, and the transverse positioning plate is perpendicular to the A-wall reinforcement positioning plate, the first B-wall reinforcement positioning plate, the second B-wall reinforcement positioning plate, and the retaining wall reinforcement positioning plate.

4. The positioning jig for pre-embedded reinforcing bars in three walls according to claim 1, characterized in that, A fastening assembly is provided on one side of the slot. The fastening assembly includes a pressure plate, which is welded to the side of the slot. One side of the pressure plate is flush with the inner side of the slot. A threaded post is fixedly installed on the other side of the pressure plate. A push rod is threadedly installed in the middle of the threaded post. One end of the push rod is provided with a rotating handle.

5. A positioning jig for pre-embedded reinforcing bars in three walls according to claim 4, characterized in that, The pressure plate has a side groove for the top rod to pass through, and one end of the top rod is in contact with the side of the A wall reinforcement positioning plate, the first B wall reinforcement positioning plate, the second B wall reinforcement positioning plate or the retaining wall reinforcement positioning plate.

6. A positioning jig for pre-embedded reinforcing bars in three walls according to claim 4, characterized in that, A bottom groove is provided below the horizontal positioning plate, and the bottom groove is located on the side of the fastening component.

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