Box girder hoisting and overturning device

Abstract

A box girder lifting and overturning device comprises a placing plate, a placing groove is formed in the middle of the surface of the placing plate, side plate mounting grooves are symmetrically formed in the two sides of the placing groove, side plates are mounted in the side plate mounting grooves and rotationally connected through rotating shafts, pressure-proof plates are arranged on the surfaces of the side plates, and mounting plates are vertically arranged on the sides of the pressure-proof plates. The screw penetrates through the mounting plate and is rotationally connected with the mounting plate, the two ends of the screw are fixedly connected with a hand wheel and an anti-pressing block respectively, first hanging lugs are symmetrically arranged on the end face of the placing plate, and second hanging lugs are symmetrically arranged on the outer side surfaces of the side plates; the box girder is limited through the containing grooves and the side plates, the box girder and the side plates are fixed through the pressing-preventing blocks, the first hanging lugs and the second hanging lugs are matched with each other to be connected with the steel wire ropes to conduct lifting and overturning operation on the box girder, and the technical effects of improving the operation efficiency and guaranteeing the quality of the box girder are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a box beam hoisting and turning device. Background Art

[0002] Box girder is a type of beam in bridge engineering. It is hollow inside with flanges on both sides of the upper part, similar to a box, hence the name. It is divided into single box and multiple box. 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 after the lower part of the project is completed with a bridge erection machine, which can speed up the project progress and save construction time. Cast-in-place box girders are mostly used in large continuous bridges. There are two main types of common materials: prestressed reinforced concrete box girder and steel box girder.

[0003] In the prior art, cranes are usually used to lift box girders by wire ropes. Conventional flipping and transportation work requires at least multiple workers to cooperate with each other to keep the box girder balanced. This method not only reduces work efficiency but also increases safety risks for workers.

[0004] In the prior art, when a crane is used to lift a box girder, steel wire ropes need to be tied to the box girder, which causes the steel wire ropes to rub against the surface of the box girder during the lifting process, causing damage to the surface of the box girder and thus affecting the local quality of the box girder. Utility Model Content

[0005] The utility model provides a box girder lifting and turning device, which solves the technical problem in the prior art that the box girder turning and transportation operation requires the assistance of multiple operators, thereby reducing the operation efficiency.

[0006] In order to solve the above problems, the utility model provides a box girder lifting and flipping device, including a placing plate, characterized in that: a placing groove is provided in the middle of the placing plate surface, side plate mounting grooves are symmetrically provided on both sides of the placing groove, side plates are installed in the side plate mounting grooves, and are rotatably connected to each other through a rotating shaft, an anti-pressure plate is provided on the side of the side plate surface, a mounting plate is vertically provided on the side of the anti-pressure plate, a screw passes through the mounting plate and is rotatably connected to each other, and a handwheel and an anti-pressure block are respectively fixedly connected at both ends, and the end surface of the placing plate is symmetrically provided with a first hanging ear on both sides of the mounting groove, and the outer surface of the side plate is symmetrically provided with a second hanging ear in the direction of the first hanging ear.

[0007] Furthermore, an anti-pressure plate is provided on the surface of the side plate.

[0008] Furthermore, a mounting plate is vertically provided on the surface of the side panel.

[0009] Furthermore, a set of first hanging ears is symmetrically provided on the end surface of the placement plate.

[0010] Furthermore, a group of second hanging ears are symmetrically provided on the outer surface of the side panel.

[0011] Furthermore, the anti-pressure plate and the anti-pressure block are both made of rubber.

[0012] The beneficial effects of the present invention are as follows: the present application limits the box beam by placing grooves and side plates, and fixes the box beam and side plates by anti-pressure blocks; the first hanging ear and the second hanging ear cooperate with each other to connect the steel wire rope to lift and flip the box beam, which not only reduces labor costs and safety hazards of operators, but also prevents damage caused by contact and friction between the steel wire rope and the surface of the box beam, thereby achieving the technical effect of improving operating efficiency and ensuring the quality of the box beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure according to an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of a top view of the structure according to an embodiment of the present utility model;

[0015] Figure 3 It is a schematic diagram of a three-dimensional structure according to the implementation effect of an embodiment of the present utility model.

[0016] Figure numerals: placement plate 1, side plate 2, rotating shaft 3, placement groove 11, side plate mounting groove 12, first hanging ear 13, anti-pressure plate 21, second hanging ear 22, screw 31, hand wheel 32, anti-pressure block 33, mounting plate 34. DETAILED DESCRIPTION

[0017] In order to make the technical solution of the present invention more clear, the present invention will be further described below with reference to specific embodiments of the drawings.

[0018] like Figure 1-3 As shown, a box girder lifting and flipping device according to an embodiment of the present utility model includes a placing plate 1, a placing groove 11 is provided in the middle of the surface of the placing plate 1, and side plate mounting grooves 12 are symmetrically provided on both sides of the placing groove 11. Side plates 2 are installed in the side plate mounting grooves 12, and are rotatably connected to each other through a rotating shaft 3. An anti-pressure plate 21 is provided on the surface of the side plate 2, and a mounting plate 34 is provided vertically on the side of the anti-pressure plate 21. The screw 31 passes through the mounting plate 34 and is rotatably connected to each other, and a handwheel 32 and an anti-pressure block 33 are fixedly connected at both ends thereof. The end face of the placing plate 1 is symmetrically provided with a first hanging ear 13 on both sides of the mounting groove 12, and the outer surface of the side plate 2 is symmetrically provided with a second hanging ear 22 in the direction of the first hanging ear 13.

[0019] Among them, the surface of the side plate 2 is provided with an anti-pressure plate 21; when working, the anti-pressure plate 21 contacts both sides of the box beam to prevent the side plate 2 from wearing and damaging both sides of the box beam, thereby protecting the surface of the box beam.

[0020] Among them, a mounting plate 34 is vertically provided on the surface of the side panel 2; when working, the screw 31 is rotationally connected to the mounting plate 34, and the screw 31 is driven to rotate by the handwheel 32 to make the anti-pressure block 33 descend and contact the surface of the box beam, which has the technical effect of limiting and fixing the box beam and the side panel 2.

[0021] Wherein, the end surface of the placement plate 1 is symmetrically provided with a group of first hanging ears 13; when working, the first hanging ears 13 are connected to the wire rope to carry out the lifting operation on the box girder.

[0022] Among them, a group of second hanging ears 22 are symmetrically provided on the outer surface of the side plate 2; when working, the first hanging ear 13 and the second hanging ear 22 are connected to the wire rope to perform the box girder flipping operation.

[0023] Among them, the anti-pressure plate 21 and the anti-pressure block 33 are both made of rubber; when working, the anti-pressure plate 21 and the anti-pressure block 33 fit the surface of the box beam to prevent the side plate 2 and the screw 31 from wearing and damaging the surface of the box beam, thereby protecting the surface of the box beam.

[0024] Working principle: First, transport the box beam and place it in the placement slot 11, then rotate the side plate 2 to make the anti-pressure plate 21 fit on both sides of the box beam, then rotate the hand wheel 32 to make the screw 31 drive the anti-pressure block 33 to descend and contact the surface of the box beam, thus fixing the box beam and the side plate 2;

[0025] When the box girder needs to be hoisted, the first hanging ears 13 on both sides are connected to the wire ropes on the crane, and then the crane is started to lift the box girder for transportation;

[0026] When the present invention is required to perform a box girder flipping operation, the first hanging lug 13 on one side is connected to the steel wire rope on the crane, and then the second hanging lug 22 on the other side is connected to the steel wire rope on the crane. After the preparation is completed, the crane is started to lift the box girder, and then the steel wire rope connected to the first hanging lug 13 is controlled to rise, and the steel wire rope connected to the second hanging lug 22 is controlled to fall, thereby completing the box girder flipping operation;

[0027] In addition, in order to ensure the firmness of the placement plate 1 and the side plate 2, a reinforcing rib plate can be installed;

[0028] The side panel 2 can be connected to the inner surface of the side panel mounting groove 12 with bolts to reinforce the side panel 2 during operation; a rubber pad can be laid on the bottom surface of the placement groove 11 to prevent wear on the surface of the box beam; the box beam hoisted in the actual application of this application is not limited to a certain type of box beam structure, and can be applied to box beams of various different types of structures.

[0029] The above embodiments can be combined with each other and further implemented if they are not mutually exclusive.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A box girder hoisting and turning device, comprising a placement plate (1), characterized in that: A placement groove (11) is provided in the middle of the surface of the placement plate (1), and side plate mounting grooves (12) are symmetrically provided on both sides of the placement groove (11). Side plates (2) are installed in the side plate mounting grooves (12) and are rotatably connected to each other through a rotating shaft (3). An anti-pressure plate (21) is provided on the surface of the side plate (2), and a mounting plate (34) is provided vertically on the side of the anti-pressure plate (21) and located on the side of the side plate (2). The screw (31) passes through the mounting plate (34) and is rotatably connected to each other, and a hand wheel (32) and an anti-pressure block (33) are fixedly connected at both ends thereof. The end surface of the placement plate (1) is symmetrically provided with a first hanging ear (13) on both sides of the mounting groove (12), and the outer surface of the side plate (2) is symmetrically provided with a second hanging ear (22) in the direction of the first hanging ear (13).

2. A box girder hoisting and turning device according to claim 1, characterized in that: A pressure-proof plate (21) is provided on the surface of the side plate (2).

3. The box girder hoisting and turning device according to claim 1, characterized in that: A mounting plate (34) is vertically provided on the surface of the side plate (2).

4. The box girder hoisting and turning device according to claim 1, characterized in that: The end surface of the placement plate (1) is symmetrically provided with a set of first hanging ears (13).

5. The box girder hoisting and turning device according to claim 1, characterized in that: A set of second hanging ears (22) is symmetrically provided on the outer surface of the side plate (2).

6. The box girder hoisting and turning device according to claim 1, characterized in that: The anti-pressure plate (21) and the anti-pressure block (33) are both made of rubber.

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