Bracket for hoisting precast beam and hoisting device

Abstract

The utility model relates to the technical field of bridge construction, and provides a corbel for precast beam hoisting and a hoisting device.The corbel comprises a corbel body and further comprises a supporting frame, the supporting frame is arranged at the end of the corbel body, a threaded rod sliding way is arranged at the bottom of the corbel body in the direction perpendicular to the length direction of a precast beam, and a threaded rod is arranged in the threaded rod sliding way in a sliding mode; the screw sequentially penetrates through the supporting frame and the precast beam, a nut in threaded connection with the screw is arranged at the end, close to the supporting frame, of the screw, and a lifting lug plate is arranged at the top of the bracket body. The hoisting device comprises any one of the brackets for hoisting the precast beam, and the brackets are symmetrically arranged relative to the precast beam. By arranging the supporting frame, the corbel body can be conveniently connected with the precast beam, hoisting of the precast beam is achieved, the operation difficulty of independent hoisting of the precast beam is lowered, meanwhile, the safety coefficient is increased, the labor intensity of workers is relieved, the screws can be used repeatedly, and the cost is lowered.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a bracket and hoisting device for hoisting precast beams. Background Technology

[0002] Precast beams are beams that are prefabricated in a factory and then transported to the construction site for installation and fixing according to the design requirements. Precast concrete beams are widely used in bridge installation and construction, mainly for large-scale projects such as urban rail transit and highway bridges.

[0003] The hoisting of precast beams is a crucial step in the construction of prefabricated buildings. During the installation of precast beams, steel wire ropes are often used for hoisting, which is relatively complex and not very safe. When encountering precast beams with special structural forms, such as "U"-shaped precast beams, the use of steel wire ropes is more difficult, and the safety is also poor, making the operation more challenging.

[0004] Therefore, in order to address the above problems, a bracket and hoisting device for hoisting precast beams are proposed to solve these problems. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a bracket and lifting device for hoisting precast beams. This invention facilitates the connection between the bracket body and the precast beam, enabling the hoisting of the precast beam. It reduces the operational difficulty of hoisting precast beams individually, while improving the safety factor, reducing the labor intensity of manual labor, and allowing the screw rod to be reused multiple times, thus reducing costs.

[0006] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a bracket for hoisting precast beams, including a bracket body and a support frame. The support frame is set at the end of the bracket body. A screw slide is set at the bottom of the bracket body along the length direction perpendicular to the precast beam. A screw is slidably arranged in the screw slide. The screw passes through the support frame and is set with the precast beam in sequence. A nut is set at the end of the screw near the support frame and is threadedly connected to the screw. A hoisting ear plate is set at the top of the bracket body.

[0007] As an optimization, the height of the support frame is higher than the height of the bracket body, and the top of the support frame is flush with the top of the bracket body.

[0008] As an optimization, a counterweight box is also included, which is located on the side of the bracket body away from the support frame, and the top of the counterweight box is flush with the top of the bracket body.

[0009] As an optimization, the bracket body includes horizontal columns and tiered columns connected in sequence. The horizontal columns have a rectangular cross-section, and the tiered columns have a right trapezoidal cross-section. The top surfaces of the horizontal columns and tiered columns are flush. The end of the horizontal column is connected to the counterweight box, and the end of the tiered column is connected to the support frame.

[0010] As an optimization, the side of the support frame away from the corbel body abuts against the precast beam, and the support frame is provided with screw holes adapted to the screw slide, through which the screw passes and connects to the precast beam.

[0011] As an optimization, a connecting post is provided at the end of the screw near the counterweight box, and the cross-section of the screw slide is semi-circular and adapted to the connecting post.

[0012] As an optimization, the lifting ear plate is set at the center of the top of the bracket body.

[0013] A hoisting device includes brackets for hoisting precast beams as described in any of the preceding claims, the brackets being symmetrically arranged about the precast beams.

[0014] As an optimization, it also includes a lifting device, which is connected to a lifting lug.

[0015] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] 1. By setting up a support frame, it is easy to connect the bracket body to the precast beam, realize the hoisting of the precast beam, reduce the operation difficulty of hoisting the precast beam alone, and improve the safety factor. By setting up a screw slide, the screw can always be kept in the screw slide, avoiding manual handling, reducing the labor intensity of manual labor, and preventing the loss of the screw, so that the screw can be reused multiple times, reducing costs.

[0017] 2. The screw slide is used for the sliding of the screw. In actual use, the screw is relatively heavy and difficult to hold manually. When the bracket is disconnected from the precast beam, the screw is pushed onto the screw slide by hand, and the bracket moves the screw. When the bracket needs to be connected to the precast beam, the screw is pushed from the screw slide to the reserved hole of the precast beam 4 to realize the connection between the bracket and the precast beam. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a structural diagram of the connection between the corbel and the precast beam in this utility model;

[0020] Figure 2 This is an overall structural diagram of the present invention.

[0021] In the diagram, 1. Bracket body; 1-1. Counterweight box; 1-2. Screw slide; 1-3. Lifting ear plate; 1-4. Support frame; 1-5. Screw hole; 1-6. Connecting column; 1-7. Horizontal column; 1-8. Ladder column; 2. Lifting tool; 3. Screw; 3-1. Nut; 4. Precast beam. Detailed Implementation

[0022] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 2As shown, a bracket and lifting device for hoisting precast beams include a bracket body 1 and a support frame 1-4. The support frame 1-4 is located at the end of the bracket body 1. A screw track 1-2 is provided at the bottom of the bracket body 1 along the length direction perpendicular to the precast beam 4. A screw 3 is slidably arranged in the screw track 1-2. The screw 3 passes through the support frame 1-4 and is connected to the precast beam 4. A nut 3-1 is provided at the end of the screw 3 near the support frame 1-4 and is threadedly connected to the screw 3. A lifting ear plate 1-3 is provided at the top of the bracket body 1. The end of the screw 3 with the nut 3-1 is a threaded cylindrical steel material used to secure the bracket to the precast beam 4. By setting up and supporting frames 1-4, it is easy to connect the bracket body 1 to the precast beam 4, so as to realize the hoisting of the precast beam 4, reduce the operation difficulty of hoisting the precast beam 4 alone, and improve the safety factor. By setting up screw slides 1-2, the screw 3 can always be located in the screw slides 1-2, avoiding manual handling, reducing the labor intensity of manual labor, and preventing the loss of screw 3, so that screw 3 can be reused multiple times and reduce costs.

[0024] In this embodiment, the height of the support frame 1-4 is higher than the height of the cow leg body 1, and the top of the support frame 1-4 is flush with the top of the cow leg body 1.

[0025] In this embodiment, a counterweight box 1-1 is also included. The counterweight box 1-1 is located on the side of the corbel body 1 away from the support frame 1-4, and the top of the counterweight box 1-1 is flush with the top of the corbel body 1. When in use, the counterweight box 1-1 needs to be filled with concrete so that the entire corbel can be self-balanced.

[0026] In this embodiment, the corbel body 1 includes a horizontal column 1-7 and a ladder column 1-8 connected in sequence. The horizontal column 1-7 has a rectangular cross-section, and the ladder column 1-8 has a right trapezoidal cross-section. The top surfaces of the horizontal column 1-7 and the ladder column 1-8 are flush. The end of the horizontal column 1-7 is connected to the counterweight box 1-1, and the end of the ladder column 1-8 is connected to the support frame 1-4.

[0027] The support frame 1-4 abuts against the precast beam 4 on the side away from the bracket body 1. The support frame 1-4 is provided with screw holes 1-5 adapted to the screw slide 1-2. The screw 3 passes through the screw holes 1-5 and connects to the precast beam 4. The screw slide 1-2 is used for the sliding of the screw 3. In actual use, the screw 3 is relatively heavy, making it difficult to hold manually. When the bracket is disconnected from the precast beam 4, the screw 3 is manually pushed onto the screw slide 1-2, and the bracket moves the screw 3 along with it. When the bracket needs to be connected to the precast beam, the screw 3 is pushed from the screw slide 1-2 to the reserved hole in the precast beam 4, thus connecting the bracket and the precast beam 4.

[0028] In this embodiment, a connecting post 1-6 is provided at one end of the screw 3 near the counterweight box 1-1. The screw slide 1-2 has a semi-circular cross-section and is adapted to the connecting post 1-6. The connecting post 1-6 is a cylindrical platform.

[0029] In this embodiment, the lifting lugs 1-3 are located at the center of the top of the bracket body 1. The lifting lugs 1-3 are used to connect with the lifting device 2.

[0030] A hoisting device includes brackets for hoisting precast beams as described in any of the preceding claims, the brackets being symmetrically arranged about the precast beam 4.

[0031] It also includes lifting device 2, which is connected to lifting lugs 1-3.

[0032] Instructions for use: Before using the bracket, connect the lifting device 2 to the lifting lugs 1-3, lift the bracket using the winch above the lifting device 2, and pour concrete into the counterweight box 1-1 until the bracket is self-balanced, then stop pouring concrete.

[0033] When hoisting the precast beam 4, first connect the bracket body 1 to the precast beam 4, then connect the support frame 1-4 to the precast beam 4, and then pass the screw 3 through the reserved holes on the bracket body 1, support frame 1-4 and precast beam 4 in sequence, and fix it with nut 3-1. Then, use the hoisting tool 2 and the winch above to lift the bracket body 1 and the precast beam 4. After reaching the installation position, install the precast beam 4.

[0034] After the precast beam 4 is installed, remove the nut 3-1 and push the screw 3 out from the inside of the box of the precast beam 4. The screw 3 will be pushed out along the screw slide 1-2 and remain on the screw slide 1-2. The bracket body 1 and the screw 3 are lowered to the hoisting height by the lifting device 2 and the winch above, and connected to the next precast beam 4. Repeat the above operation to complete the installation of the remaining precast beams 4.

[0035] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A bracket for precast beam hoisting, comprising a bracket body (1), characterized in that: The support frame (1-4) is arranged at the end of the bracket body (1), a screw rod slide (1-2) is arranged at the bottom of the bracket body (1) along the length direction of the vertical precast beam (4), a screw rod (3) is slidably arranged in the screw rod slide (1-2), the screw rod (3) is sequentially arranged through the support frame (1-4) and the precast beam (4), a nut (3-1) in threaded connection with the screw rod (3) is arranged at the end of the screw rod (3) close to the support frame (1-4), and a hoisting lug plate (1-3) is arranged at the top of the bracket body (1).

2. The bracket for lifting of precast beam according to claim 1, characterized in that: The height of the support frame (1-4) is higher than the height of the bracket body (1), and the top of the support frame (1-4) is flush with the top of the bracket body (1).

3. The bracket for lifting of precast beam according to claim 1, characterized in that: The counterweight box (1-1) is arranged on the side of the bracket body (1) away from the support frame (1-4), and the top of the counterweight box (1-1) is flush with the top of the bracket body (1).

4. The bracket for lifting of precast beams according to claim 3, characterized in that: The bracket body (1) comprises a horizontal column (1-7) and a ladder column (1-8) connected in sequence, the horizontal column (1-7) has a rectangular cross section, the ladder column (1-8) has a right-angled trapezoidal cross section, the top surfaces of the horizontal column (1-7) and the ladder column (1-8) are flush, the horizontal column (1-7) is connected with the counterweight box (1-1), and the ladder column (1-8) is connected with the support frame (1-4).

5. The bracket for lifting of precast beam according to claim 1 or 2, characterized in that: The side of the support frame (1-4) away from the bracket body (1) abuts against the precast beam (4), a screw hole (1-5) adapted to the screw rod slide (1-2) is arranged on the support frame (1-4), and the screw rod (3) is connected with the precast beam (4) through the screw hole (1-5).

6. The bracket for lifting of precast beam according to claim 4, characterized in that: The end of the screw rod (3) close to the counterweight box (1-1) is provided with a connecting column (1-6), the cross section of the screw rod slide (1-2) is semicircular and adapted to the connecting column (1-6).

7. The bracket for lifting of a precast beam according to claim 1 or 2, characterized in that: The hoisting lug plate (1-3) is arranged at the center of the top of the bracket body (1).

8. A hoisting device comprising the corbel for hoisting a precast beam according to any one of claims 1 to 7, characterized in that: The bracket is symmetrically arranged with respect to the precast beam (4).

9. The hoisting device of claim 8, wherein: The lifting tool (2) is connected with the hoisting lug plate (1-3).

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