Limiting bracket for mounting precast beam with small curve radius

Abstract

The utility model provides a limiting support for installation of a small-curve-radius precast beam, relates to the technology of limiting supports, and particularly discloses two fixing seats which are arranged in pairs, a fixing mechanism detachably connected with the other fixing seat is arranged on the side wall of one fixing seat, cross beams are installed on the side walls, deviating from each other, of the two fixing seats, and the cross beams are connected with the fixing mechanism. Swing arms are rotationally arranged on the cross beams, driving parts for driving the swing arms to rotate are mounted on the side walls of the cross beams, and limiting mechanisms for limiting the precast beams are arranged at the tail ends of the swing arms; the lateral displacement of the beam body is limited and the overall overturning is prevented through the limiting mechanism, so that the stability of the beam body in the mounting process is enhanced; the swing arm has a certain moving space and can be adaptive to beam bodies with different sizes, so that the universality and the applicability of the bracket are improved; the driving piece on the cross beam can control rotation of the swing arm, and it is ensured that movement of the swing arm on the cross beam is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of limiting bracket technology, and more specifically, to a limiting bracket for installing precast beams with small curve radii. Background Technology

[0002] Precast beams are supported by bearings, and the external forces they bear are mainly lateral forces and shear forces, and under certain specific environments, they are also subjected to bending forces. In addition to bending moments and shear forces, bridges with small-radius curves are also subjected to large torques and warping moments. There are many control points that cannot be ignored during the design and installation process. If the spatial stress characteristics are not fully considered, serious safety accidents may occur during the installation of curved bridges, such as bearing detachment, lateral displacement, or even overall overturning.

[0003] Regarding the aforementioned technologies, the inventors believe that current bridge designs often employ box girder sections with varying beam heights and large torsional moments of inertia, using diaphragms to enhance lateral stiffness and ensure overall bridge stability. However, the construction method using a full-span scaffolding monolithic cast-in-place approach places certain demands on the foundation's bearing capacity and the stability of the scaffolding. This method also requires a large amount of scaffolding and formwork, resulting in a long construction period and significant limitations for bridges in mountainous areas and those with high piers. Utility Model Content

[0004] The purpose of this utility model is to provide a limiting bracket for installing precast beams with small curve radii, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0005] The technical solution of this utility model is implemented as follows:

[0006] The utility model provides a limiting bracket for installing precast beams with small curve radii, including two fixed seats arranged in pairs. One fixed seat has a fixing mechanism on its side wall that can be detachably connected to the other fixed seat. A crossbeam is installed on the opposite side walls of the two fixed seats. Each crossbeam is rotatably equipped with a swing arm. A driving component for driving the swing arm to rotate is installed on the side wall of the crossbeam. The end of each swing arm is equipped with a limiting mechanism for limiting the precast beam.

[0007] In some technical solutions of this utility model, the fixing mechanism includes several connecting screws, and mounting holes are provided on the side walls of the fixing seats. A drive motor that is connected to the connecting screws is installed on the outer side wall of one of the fixing seats, and a bushing that is threadedly connected to the connecting screws is installed in the mounting hole of another fixing seat.

[0008] In some technical solutions of this utility model, the driving component is a first push rod, the body of the first push rod is rotatably connected to the crossbeam, and the telescopic end of the first push rod is hinged to the swing arm.

[0009] In some technical solutions of this utility model, the limiting mechanism includes a rotating seat rotatably disposed at the end of the swing arm, and a second limiting plate is installed on the side wall of the rotating seat.

[0010] In some technical solutions of this utility model, the bottom of the second limiting plate is rotatably provided with the first limiting plate.

[0011] In some technical solutions of this utility model, the cross-section of the fixing seat is semi-circular, and after two fixing seats are spliced ​​together, there is a fixed area between them.

[0012] In some technical solutions of this utility model, a rubber pad is provided on the inner side wall of the fixing seat, and the side wall where the rubber pad contacts the support column is provided with concave and convex scratches.

[0013] Compared with the prior art, this utility model has at least the following advantages or beneficial effects: The limiting mechanism restricts the lateral displacement of the beam and prevents overall overturning, enhancing the stability of the beam during installation; the swing arm has a certain amount of room to move, adapting to beams of different sizes, increasing the versatility and applicability of the support; the drive component on the crossbeam can control the rotation of the swing arm, ensuring precise control of the swing arm's movement on the crossbeam; the threaded connection between the connecting screw and the bushing fixes the two fixed seats, improving the stability of the entire structure during operation; the cooperative design of the second limiting plate and the first limiting plate allows the lower sidewall of the precast beam to be quickly positioned between the two second limiting plates, facilitating rapid installation by operators and improving construction efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0015] Figure 2 This is a front view structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the assembly structure of the fixed base and the crossbeam in this utility model.

[0017] Reference numerals in the attached drawings: 1. Precast beam; 2. Support column; 3. Crossbeam; 4. Swing arm; 5. Rotating seat; 6. First push rod; 7. Fixed seat; 8. Connecting screw; 9. Drive motor; 10. First limiting plate; 11. Second limiting plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention and are specific implementations of the accompanying drawings.

[0020] Example

[0021] This utility model provides a limiting bracket for installing precast beams with small curve radii, such as... Figures 1-3 As shown, the system includes two fixed seats 7 arranged in pairs. Each fixed seat 7 has a semi-circular cross-section, and a fixed area exists between them after they are joined together. A fixing mechanism detachably connected to the other fixed seat 7 is provided on the side wall of one of the fixed seats 7. Crossbeams 3 are fixedly installed on the opposite side walls of both fixed seats 7 by welding. Each crossbeam 3 has a swing arm 4 rotatably mounted via a pin, allowing the swing arm 4 to have a certain amount of movement to accommodate beams 1 of different sizes. A driving component is installed on the side wall of the crossbeam 3 to drive the swing arm 4 to rotate, thus controlling the movement of the swing arm 4 on the crossbeam 3. A traction force is applied to the swing arm 4 to prevent lateral displacement or even overall overturning of the beam 1 on the support column 2, improving the stability of the beam 1 during installation. Each swing arm 4 has a limiting mechanism at its end to restrict the precast beam 1. The limiting mechanism increases the contact area between the swing arm 4 and the precast beam 1, ensuring the stability of the structure when restricting the precast beam 1.

[0022] In some technical solutions of this utility model, the fixing mechanism includes four connecting screws 8. Two mounting holes are opened on both sides of the fixing seat 7. A drive motor 9, which is connected to the connecting screws 8, is installed on the outer wall of one of the fixing seats 7. The drive motor 9 is fixed to the outer wall of the fixing seat 7 by bolts, and there are also four drive motors 9. A bushing, threadedly connected to the connecting screws 8, is installed in the mounting hole of the other fixing seat 7. The bushing is inserted into the mounting opening by an embedded method. The working principle of the fixing mechanism is as follows: When locking the two fixing seats 7, the two fixing seats 7 must first be placed at a predetermined height on the support column 2. Then, the four connecting screws 8 are partially screwed into the corresponding bushings. Subsequently, the drive motor 9 is started to drive the connecting screws 8 to rotate continuously. When most of the connecting screws 8 are screwed into the bushings, the connecting screws 8 will pull the two fixing seats 7 closer together, thereby fixing the two fixing seats 7 at the predetermined height of the support column 2. Through the above structure, self-locking can also be achieved by utilizing the threaded connection between the connecting screws 8 and the bushings, improving the stability of the structure during operation.

[0023] In some technical solutions of this utility model, the driving component is a first push rod 6. The first push rod 6 is similar to the structure of a jack, and has the functions of rebound and lifting. The body of the first push rod 6 is rotatably connected to the crossbeam 3, and the telescopic end of the first push rod 6 is hinged to the swing arm 4. The first push rod 6 can drive the swing arm 4 to rotate, so that the movement of the swing arm 4 on the crossbeam 3 is controlled. A traction force is applied to the swing arm 4 to prevent the beam 1 from lateral displacement or even overall overturning on the support column 2, thereby improving the stability of the beam 1 during installation.

[0024] In some technical solutions of this utility model, the limiting mechanism includes a rotating seat 5 rotatably mounted at the end of the swing arm 4 via a shaft, and a second limiting plate 11 is fixedly installed on the side wall of the rotating seat 5 by welding. This structure ensures that the structure is compatible with the inclined side wall of the adapting beam 1, thus improving the adaptability of the structure.

[0025] In some technical solutions of this utility model, the bottom of the second limiting plate 11 is hinged to a first limiting plate 10. This structure allows contact with the lower side wall of the precast beam 1, facilitating quick assembly of the two second limiting plates 11 with the side wall of the beam 1 during installation, thus improving construction efficiency.

[0026] In some technical solutions of this utility model, a rubber pad is fixed to the inner side wall of the fixing seat 7 by adhesive bonding to avoid damage to the outer facade of the support column 2 when the fixing seat 7 contacts the support column 2; the side wall where the rubber pad contacts the support column 2 has raised and recessed scratches. This increases the friction when the fixing seat 7 contacts the support column 2, ensuring that the above structure does not undergo relative displacement when installed on the support column 2, thus providing more stable positioning and support for the precast beam 1.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A limiting bracket for installing precast beams with small curve radii, characterized in that, It includes two fixed seats (7) arranged in pairs. One of the fixed seats (7) has a fixing mechanism on its side wall that can be detachably connected to the other fixed seat (7). Both fixed seats (7) have crossbeams (3) installed on their opposite side walls. Each crossbeam (3) has a swing arm (4) rotatably mounted on it. The side wall of the crossbeam (3) is equipped with a driving component that drives the swing arm (4) to rotate. The end of each swing arm (4) is equipped with a limiting mechanism for limiting the precast beam (1).

2. The limiting bracket for installing a precast beam with a small curve radius according to claim 1, characterized in that, The fixing mechanism includes several connecting screws (8), and each fixing seat (7) has a mounting hole on its side wall. A drive motor (9) that is connected to the connecting screw (8) is installed on the outer side wall of one of the fixing seats (7), and a bushing that is threadedly connected to the connecting screw (8) is installed in the mounting hole of the other fixing seat (7).

3. The limiting bracket for installing a precast beam with a small curve radius according to claim 1, characterized in that, The driving component is a first push rod (6), the body of the first push rod (6) is rotatably connected to the crossbeam (3), and the telescopic end of the first push rod (6) is hinged to the swing arm (4).

4. A limiting bracket for installing precast beams with small curve radii according to any one of claims 1-3, characterized in that, The limiting mechanism includes a rotating seat (5) rotatably disposed at the end of the swing arm (4), and a second limiting plate (11) is installed on the side wall of the rotating seat (5).

5. A limiting bracket for installing a precast beam with a small curve radius according to claim 4, characterized in that, The bottom of the second limiting plate (11) is rotatably provided with a first limiting plate (10).

6. The limiting bracket for installing a precast beam with a small curve radius according to claim 1, characterized in that, The cross-section of the fixing seat (7) is semi-circular, and after two fixing seats (7) are spliced ​​together, there is a fixed area between them.

7. A limiting bracket for installing precast beams with small curve radii according to claim 6, characterized in that, The inner wall of the fixed seat (7) is provided with a rubber pad layer, and the side wall of the rubber pad layer that contacts the support column (2) is provided with concave and convex scratches.

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