Adjusting lifting appliance for box girder
By designing a box girder adjustment hoist and using a combination of sliding blocks and wire ropes to adjust the hoisting beam frame, the problems of overturning and hoisting gear replacement during box girder lifting operations were solved, achieving stable and efficient lifting operations.
Patent Information
- Application Number
- CN202422976741.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In the prior art, box girders are prone to overturning during lifting operations, and different lifting tools need to be replaced to accommodate box girders of different sizes, resulting in low operating efficiency.
An adjustable lifting device for box girders is designed, which includes a main beam plate and a lifting beam frame. Through the combination of sliding blocks, operating rods and wire ropes, the lifting beam frame can be quickly adjusted and fixed to adapt to the lifting of box girders of different sizes.
It improves the stability and efficiency of lifting operations, reduces safety hazards, shortens the time for lifting equipment replacement, and improves construction efficiency.
Smart Images
Figure CN223372555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to an adjusting hanger for box beams. 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, due to the large size and weight of the box girder, when the box girder is lifted using a single hanging lug, the box girder may overturn, thereby endangering the safety of the construction site and the workers.
[0004] In the prior art, since box girders have different sizes, different lifting tools need to be replaced to lift box girders of different sizes, thereby wasting operation time and reducing operation efficiency. Utility Model Content
[0005] The utility model provides a box beam lifting device, which solves the technical problem in the prior art that different lifting tools need to be replaced to perform lifting operations on box beams of different sizes, thereby reducing operating efficiency.
[0006] Material toggling mechanism, its both ends are to be connected with the rocker arm, and the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face has the rocker arm end face
[0007] Furthermore, four limiting grooves are arranged in a circular distribution along the sliding groove.
[0008] Furthermore, four limit blocks are fixedly provided in a circular distribution below the surface of the operating rod.
[0009] Furthermore, a winding groove is provided above the surface of the operating rod.
[0010] Furthermore, the width of the limiting block is smaller than the width of the limiting groove.
[0011] Furthermore, a fixing rod is vertically provided on the upper surface of the hanging beam frame.
[0012] The beneficial effects of the utility model are:
[0013] 1. This application rotates the operating rod by rotating the operating fixed block, winds the wire rope into the winding groove, adjusts the size of the beam frame, and then presses down the operating fixed block to insert the limit block into the limit groove to limit and fix the operating rod. In this way, the size of the beam frame can be quickly adjusted, thereby improving work efficiency.
[0014] 2. This application provides a fixing rod vertically on the upper surface of the lifting beam frame, and provides a hanging ear on its end face. When the box beam needs to be lifted, it is connected to the operating equipment through the hanging ear to directly perform synchronous lifting operations on both ends of the box beam, thereby improving the stability of the box beam lifting operation and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure according to an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the main structure according to an embodiment of the present utility model;
[0017] Figure 3 It is a schematic cross-sectional structural diagram according to an embodiment of the present utility model.
[0018] Figure markings: main beam plate 1, hanging beam frame 2, sliding block 3, wire rope 4, slideway 11, sliding groove 12, annular limit plate 13, limit groove 14, fixing rod 21, hanging ear fixing block 22, hanging ear 23, sleeve 24, operating rod 31, operating fixing block 32, winding groove 33, limit block 34. DETAILED DESCRIPTION
[0019] 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.
[0020] like Figure 1-3As shown, an adjustment hanger for a box girder according to an embodiment of the present invention includes a main beam plate 1 and a beam frame 2, wherein slideways 11 are symmetrically provided on both sides of the main beam plate 1, and the two ends of the outside are open structures, and a sliding groove 12 and a limiting groove 14 are vertically provided in the middle of the upper surface, and the limiting grooves 14 are arranged in an annular distribution along the sliding groove 12 and are connected to each other, a sliding block 3 is provided in a sliding connection in the sliding groove 12, and an annular limiting plate 13 is fixed on the inner surface, an operating rod 31 is vertically provided on the surface of the sliding block 3, and the operating rod 3 1 is fixedly provided with a limit block 34 in an annular distribution below the surface, a winding groove 33 is provided above, and an operation fixed block 32 is provided at the end. The hanging beam frame 2 is a "C"-shaped structure as a whole and is slidably connected with the slide 11. A fixing rod 21 is vertically provided on its upper surface. A sleeve 24 is slidably connected on the surface of the fixing rod 21, and a hanging ear fixing block 22 is provided at the end. A hanging ear 23 is provided on the surface of the hanging ear fixing block 22. One end of the wire rope 4 is fixedly connected to the sleeve 24, and the other end is fixedly connected to the sleeve 24 at the other end around the winding groove 33.
[0021] Among them, the four limit grooves 14 are arranged in a ring-shaped distribution along the sliding groove 12; during operation, the sliding block 3 slides in the sliding groove 12 by pressing the fixing block 32 downward, so that the limit block 34 is inserted into the limit groove 14, thereby limiting and fixing the operating rod 31.
[0022] Among them, four limit blocks 34 are fixedly provided in a circular distribution below the surface of the operating rod 31.
[0023] A winding groove 33 is provided above the surface of the operating rod 31 ; when working, the operating rod 31 is rotated to allow the steel wire rope 4 to be wound in the winding groove 33 , thereby adjusting the hanging beam frame 2 .
[0024] The width of the limiting block 34 is smaller than the width of the limiting slot 14 .
[0025] Wherein, a fixing rod 21 is vertically provided on the upper surface of the hanging beam frame 2 .
[0026] Working principle: When it is necessary to use this application to lift the box girder, first place this application on the surface of the box girder, then rotate the operating fixed block 32 to drive the operating rod 31 to rotate, so that the wire rope 4 is wound in the winding groove 33. During the winding process of the wire rope 4, since the two ends of the wire rope 4 are fixedly connected to the sleeve 24, the beam frame 2 is affected by the tension and slides in the slideway 11, thereby quickly adjusting the beam frame 2. In addition, since the inner surface of the sliding groove 12 is fixedly provided with an annular limit plate 13, it can limit the sliding block 3. After the adjustment is completed, the operating fixed block 32 is pressed down to drive the operating rod 31 and the sliding block 3 to slide in the sliding groove 12, so that the limit block 34 is inserted into the limit groove 14, which plays a role in limiting and fixing the operating rod 31. During the downward pressing of the operating rod 31, the sleeve 24 slides downward on the surface of the fixed rod 21 under the influence of the traction force of the wire rope 4. Finally, the hanging ear 23 is connected to the operating equipment to perform the box girder lifting operation.
[0027] The above embodiments can be combined with each other and further implemented if they are not mutually exclusive.
[0028] 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. An adjustable sling for a box girder, comprising a main girder plate (1) and a sling frame (2), characterized in that: The main beam plate (1) is symmetrically provided with slideways (11) on both sides inside, and has an open structure at both ends outside. A sliding groove (12) and a limiting groove (14) are vertically provided in the middle of the upper surface. The limiting grooves (14) are arranged in an annular distribution along the sliding groove (12) and are interconnected. A sliding block (3) is provided in a sliding connection in the sliding groove (12). An annular limiting plate (13) is fixedly provided on the inner surface. An operating rod (31) is vertically provided on the surface of the sliding block (3). A limiting block (34) is fixedly provided in an annular distribution below the surface of the operating rod (31). A winding groove (33) is provided on the side, and an operation fixed block (32) is provided on the end. The hanging beam frame (2) is a "C"-shaped structure as a whole and is slidably connected to the slideway (11). A fixing rod (21) is vertically provided on its upper surface. A sleeve (24) is slidably connected on the surface of the fixing rod (21). A hanging ear fixing block (22) is provided on the end. A hanging ear (23) is provided on the surface of the hanging ear fixing block (22). One end of the steel wire rope (4) is fixedly connected to the sleeve (24), and the other end thereof is fixedly connected to the sleeve (24) at the other end around the winding groove (33).
2. The adjustable hanger for a box girder according to claim 1, characterized in that: Four limiting grooves (14) are arranged in an annular distribution along the sliding groove (12).
3. The adjustable hanger for a box girder according to claim 1, characterized in that: Four limiting blocks (34) are fixedly provided in an annular distribution below the surface of the operating rod (31).
4. The adjustable hanger for a box girder according to claim 1, characterized in that: A winding groove (33) is provided above the surface of the operating rod (31).
5. The adjustable hanger for a box girder according to claim 1, characterized in that: The width of the limiting block (34) is smaller than the width of the limiting groove (14).
6. The adjustable hanger for a box girder according to claim 1, characterized in that: A fixing rod (21) is vertically provided on the upper surface of the hanging beam frame (2).