Corner wrapping device for lifting prefabricated box girder

Abstract

The utility model relates to the field of bridge construction, in particular to an angle wrapping device for lifting a prefabricated box girder, which comprises a prefabricated box girder body, an angle wrapping frame is connected to one side of the prefabricated box girder body, an inflation structure is connected to the outer side of the angle wrapping frame, a middle expansion fixing structure is connected to one side of the angle wrapping frame, and the middle expansion fixing structure is connected to the other side of the prefabricated box girder body. The inner side wall of the corner wrapping frame is connected with a side expansion fixing structure, and the outer side of the corner wrapping frame is connected with a lifting structure. According to the utility model, through the use of the wrap angle frame, the end part of the precast beam body is protected and fixed; by using the inflation structure, the middle expansion fixing structure and the side expansion fixing structure, the corner wrapping frame is fixed to the outer side of the precast beam body, the first air bag and the second air bag serve as middle fixing pieces, and the situation that the corner wrapping frame makes direct contact with the precast beam body, and consequently the corners of the precast beam body are damaged and chipped is avoided; and through the use of the lifting structure, the wrap angle frame can be conveniently lifted.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to an angle wrapping device for a prefabricated box beam lifting beam. Background Art

[0002] Box girder is a type of beam used in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, similar to a box, hence the name. Box girders with reinforced concrete structures are divided into prefabricated box girders and cast-in-place box girders. Box girders prefabricated in an independent site can be erected in conjunction with a bridge-erecting machine after the lower project is completed, which can speed up the project progress and save construction time.

[0003] In the prior art, during the construction of bridges, the position where the steel wire rope directly contacts the prefabricated box beam when lifting the beam is prone to damage and falling of corners.

[0004] Therefore, those skilled in the art provide a corner wrapping device for a prefabricated box girder lifting beam to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a corner wrapping device for a prefabricated box girder lifting beam.

[0006] It comprises a prefabricated box beam body, one side of the prefabricated box beam body is connected with a corner frame, the outer side of the corner frame is connected with an inflatable structure, one side of the corner frame is connected with a middle expansion and fixing structure, the inner side wall of the corner frame is connected with a side expansion and fixing structure, and the outer side of the corner frame is connected with a lifting structure;

[0007] The inflation structure includes an air storage box, which is connected to one side of the corner frame. The air storage box is slidably connected inside with an air pushing plate, one side of the air pushing plate is connected with an air pushing rod, one end of the air pushing rod is slidably connected to the outside of the corner frame, and the outside of the air storage box is connected with an air pushing drive structure.

[0008] Preferably, the air-thrusting driving structure includes a driving frame, which is connected to one side of the air storage box, and a threaded rod is rotatably connected between the driving frame and the air storage box. A movable seat is provided on the outer threaded sleeve of the threaded rod, and the movable seat is connected to one end of the air-thrusting rod, and a driving member is connected to the outer side of the driving frame, and the driving member is connected to one end of the threaded rod.

[0009] Preferably, the middle expansion and fixing structure includes a first airbag, the first airbag is connected to the inner side of the corner frame, and a first inflation tube is provided between the air storage box and the first airbag.

[0010] Preferably, the side expansion and fixing structure includes a second airbag, the connection of the second airbag is arranged on the inner wall of the corner frame, and a second inflation tube is provided between the air storage box and the second airbag.

[0011] Preferably, the lifting structure includes a connecting seat, the connecting seat is sleeved on the outside of the corner frame, and the interior of the connecting seat is connected with a steel wire rope.

[0012] Preferably, a charging port is connected to one side of the air storage box, and a sealing plug is connected inside the charging port.

[0013] Preferably, two groups of the air pushing rods are symmetrically arranged between the air pushing plate and the movable seat.

[0014] Technical effects and advantages of the utility model:

[0015] When the utility model is in use, the end of the prefabricated beam body is protected and fixed by using the corner frame;

[0016] By using the inflatable structure, the middle expansion fixing structure and the side expansion fixing structure, the corner frame is fixed on the outside of the prefabricated beam body, and the first airbag and the second airbag are used as intermediate fixing parts to prevent the corner frame from directly contacting the prefabricated beam body and causing damage or falling of the corners of the prefabricated beam body;

[0017] By using the lifting structure, it is easy to lift the corner frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a corner wrapping device for a prefabricated box girder lifting beam provided in an embodiment of the present application;

[0019] Figure 2 is a cross-sectional view of a corner wrapping device for a prefabricated box girder lifting beam provided in an embodiment of the present application;

[0020] Figure 3 It is a right view of a corner wrapping frame in a corner wrapping device for a prefabricated box girder lifting beam provided in an embodiment of the present application;

[0021] In the figure:

[0022] 1. Prefabricated box girder body, 2. Corner frame, 3. Inflatable structure, 4. Middle expansion and fixing structure, 5. Side expansion and fixing structure, 6. Lifting structure, 7. Air storage box, 8. Push plate, 9. Push rod, 10. Push drive structure, 11. Drive frame, 12. Threaded rod, 13. Moving seat, 14. Drive member, 15. First air bag, 16. First inflation tube, 17. Second air bag, 18. Second inflation tube, 19. Connecting seat, 20. Wire rope, 21. Sealing plug. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] Example 1

[0025] See also Figures 1 to 3 In this embodiment, a corner wrapping device for lifting a prefabricated box girder is provided, comprising a prefabricated box girder body 1, a corner wrapping frame 2, an inflatable structure 3, a middle expansion and fixing structure 4, a side expansion and fixing structure 5 and a lifting structure 6, wherein the corner wrapping frame 2 is sleeved on the outer side of the end of the prefabricated box girder body 1, the inflatable structure 3 is connected to the outer side of the corner wrapping frame 2, the middle expansion and fixing structure 4 is connected to one side of the corner wrapping frame 2, the side expansion and fixing structure 5 is connected to the inner side wall of the corner wrapping frame 2, and the lifting structure 6 is connected to the outer side of the corner wrapping frame 2.

[0026] like Figure 1-2 As shown, the inflation structure 3 includes an air storage box 7, an air pushing plate 8 and an air pushing rod 9, the air storage box 7 is connected to one side of the corner frame 2, one side of the air storage box 7 is connected to an inflation port, the inside of the inflation port is connected to a sealing plug 21, the air pushing plate 8 is slidably connected to the inside of the air storage box 7, the air pushing rod 9 is connected to one side of the air pushing plate 8, one end of the air pushing rod 9 is slidably connected to the outside of the corner frame 2, and the outside of the air storage box 7 is connected to an air pushing drive structure 10;

[0027] The air push drive structure 10 includes a drive frame 11, which is connected to one side of the air storage box 7. A threaded rod 12 is rotatably connected between the drive frame 11 and the air storage box 7. A movable seat 13 is provided on the outer threaded sleeve of the threaded rod 12. The movable seat 13 is connected to one end of the air push rod 9, and a drive member 14 is connected to the outer side of the drive frame 11. The drive member 14 is connected to one end of the threaded rod 12. Two groups of air push rods 9 are symmetrically provided between the air push plate 8 and the movable seat 13.

[0028] like Figure 2 As shown, the middle expansion and fixing structure 4 includes a first airbag 15 and a first inflation tube 16 . The first airbag 15 is connected to the inner side of the corner frame 2 , and the first inflation tube 16 is connected between the air storage box 7 and the first airbag 15 .

[0029] like Figure 2As shown, the side expansion fixing structure 5 includes a second airbag 17 and a second inflation tube 18 . The connection of the second airbag 17 is arranged on the inner wall of the corner frame 2 . The second inflation tube 18 is connected between the air storage box 7 and the second airbag 17 .

[0030] like Figure 1 As shown, the lifting structure 6 includes a connecting seat 19, and the connecting seat 19 is sleeved on the outer side of the corner frame 2, and a steel wire rope 20 is connected to the interior of the connecting seat.

[0031] Before using the utility model, first cover the corner frame 2 on one side of the prefabricated box beam body 1, and fill the gas storage box 7 with gas.

[0032] When using the utility model, the staff rotates the driving member 14, the driving member 14 drives the threaded rod 12 to rotate, the threaded rod 12 drives the moving seat 13 to move, and the moving seat 13 drives the pushing plate 8 to move through the pushing rod 9, so that the gas inside the air storage box 7 enters the first air bag 15 through the first inflation tube 16, and enters the second air bag 17 through the second inflation tube 18, and fixes the corner frame 2 to the outside of the prefabricated box beam body 1 through the first air bag 15 and the second air bag 17, and completes the installation of the corner frame 2 on the outside of the prefabricated box beam body 1;

[0033] The steel wire rope 20 is fixed on a hoist in the prior art, so that the corner frame 2 can be lifted upward according to the steel wire rope 20, thereby driving the prefabricated box beam body 1 to move upward, thus realizing the beam lifting process.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A corner wrapping device for a prefabricated box girder, characterized in that: The invention comprises a prefabricated box beam body (1), one side of the prefabricated box beam body (1) is connected to a corner frame (2), the outer side of the corner frame (2) is connected to an inflatable structure (3), one side of the corner frame (2) is connected to a middle expansion fixing structure (4), the inner side wall of the corner frame (2) is connected to a side expansion fixing structure (5), and the outer side of the corner frame (2) is connected to a lifting structure (6); The inflation structure (3) comprises an air storage box (7), wherein the air storage box (7) is connected to one side of the corner frame (2), wherein an air push plate (8) is slidably connected inside the air storage box (7), wherein one side of the air push plate (8) is connected to an air push rod (9), wherein one end of the air push rod (9) is slidably connected to the outside of the corner frame (2), and an air push drive structure (10) is connected to the outside of the air storage box (7).

2. The angle wrapping device for a prefabricated box girder as claimed in claim 1, characterized in that: The air-thrusting driving structure (10) comprises a driving frame (11), wherein the driving frame (11) is connected to one side of an air storage box (7), a threaded rod (12) is rotatably connected between the driving frame (11) and the air storage box (7), a movable seat (13) is provided on the outer threaded sleeve of the threaded rod (12), the movable seat (13) is connected to one end of an air-thrusting rod (9), and a driving member (14) is connected to one end of the threaded rod (12) on the outer side of the driving frame (11).

3. The angle wrapping device for a prefabricated box girder as claimed in claim 1, characterized in that: The middle expansion fixing structure (4) comprises a first air bag (15), the first air bag (15) is connected to the inner side of the corner frame (2), and a first inflation tube (16) is provided between the air storage box (7) and the first air bag (15).

4. The angle wrapping device for a prefabricated box girder as claimed in claim 1, characterized in that: The side wall expansion fixing structure comprises a second air bag (17), the connection of the second air bag (17) is arranged on the inner side wall of the corner frame (2), and a second inflation pipe (18) is arranged between the air storage box (7) and the second air bag (17).

5. The angle wrapping device for prefabricated box beam lifting beam according to claim 1, characterized in that: The lifting structure (6) comprises a connecting seat (19), wherein the connecting seat (19) is sleeved on the outside of the corner frame (2), and a steel wire rope (20) is connected to the inside of the connecting seat.

6. The angle wrapping device for a prefabricated box girder as claimed in claim 1, characterized in that: One side of the air storage box (7) is connected to a gas charging port, and the inside of the gas charging port is connected to a sealing plug (21).

7. The angle wrapping device for a prefabricated box girder as claimed in claim 1, characterized in that: The air pushing rods (9) are symmetrically provided with two groups between the air pushing plate (8) and the moving seat (13).

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