A cable hoisting device for reinforcing construction of a large-span concrete box girder

Abstract

The utility model relates to bridge reinforcing construction technical field provides a kind of cable hoisting device for the reinforcing construction of large-span concrete box girder box, including two groups of steel support, two groups of steel support top are set anchor box, two anchor boxes are connected by steel strand cable, and mobile hoisting piece is set on steel strand cable, steel support includes stand, connecting rod and connecting diagonal bracing, and several groups of connecting rod are evenly set along vertical direction in stand outer wall, and connecting rod includes horizontal connection and longitudinal connection, and horizontal connection and longitudinal connection are set around stand outer wall alternately. The application has simple structure, convenient construction, strong applicability and versatility, can reduce cable sag, improve the carrying capacity of hoisting device, ensure construction safety; it is convenient for fast transportation material and equipment, improves transportation efficiency, reduces construction difficulty and has good popularization value.

Description

Technical Field

[0001] This utility model relates to the field of bridge reinforcement construction technology, and in particular to a cable hoisting device for reinforcement construction inside a large-span concrete box girder. Background Technology

[0002] Long-span concrete box girder is a common bridge structure. Many long-span concrete box girder bridges have developed various defects due to their long service life, requiring reinforcement construction to ensure their continued normal operation.

[0003] Most of the reinforcement work on large-span concrete box girders is carried out inside the bridge box. Materials and equipment for reinforcement are typically transported using wheelbarrows and manual labor. However, the concrete box is a confined space with limited height, and obstacles such as temporary supports may exist during construction. Furthermore, the materials and equipment required for reinforcement are heavy and numerous. Therefore, traditional transportation methods may not meet the construction requirements because transporting materials for smaller beams at a time takes a long time, making long-distance transport impossible and resulting in extremely low construction efficiency. Since large-span concrete box girder reinforcement projects are generally large-scale projects, the speed of construction directly affects the overall project cycle and cost.

[0004] Therefore, in order to address the above problems, a cable hoisting device for reinforcing the interior of a large-span concrete box girder is proposed to solve these problems. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a cable hoisting device for reinforcing the interior of large-span concrete box girders. The invention features a simple structure, convenient construction, and strong applicability and versatility. It reduces cable sag, increases the load-bearing capacity of the hoisting device, and ensures construction safety. It also facilitates rapid transportation of materials and equipment, improves transportation efficiency, reduces construction difficulty, and has significant potential for widespread adoption.

[0006] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a cable hoisting device for the internal reinforcement construction of a large-span concrete box girder, including two sets of steel supports. Anchor boxes are set on the top of both sets of steel supports. The two anchor boxes are connected by steel strand cables. Movable hoisting components are set on the steel strand cables. The steel supports include columns, connecting rods and connecting braces. Several sets of connecting rods are evenly arranged on the outer wall of the column in the vertical direction. The connecting rods include transverse connections and longitudinal connections. The transverse connections and longitudinal connections are alternately arranged around the outer wall of the column.

[0007] As an optimization, the anchor box is anchored to the bottom of the top plate inside the box by upper anchor bolts. Longitudinal ribs are set inside the anchor box. The anchor box and the column are connected by upper steel pads. A lower steel pad is set at the bottom of the column. The lower steel pad is anchored to the bottom plate inside the box by lower anchor bolts.

[0008] As an optimization, an upper plate diagonal brace is welded between the bottom of the upper steel pad and the side wall of the column, and a lower plate diagonal brace is welded between the side wall of the column and the top of the lower steel pad.

[0009] As an optimization, the steel strand cable is anchored to the anchor box by clamps.

[0010] As an optimization, a connecting brace is inclined between the transverse connections of two adjacent sets of connecting rods, and the connecting brace is connected to the outer wall of the column.

[0011] As an optimization, two mobile lifting components are provided. Each mobile lifting component includes a lifting cable hole, two limiting plates, and two pulleys. The two limiting plates are arranged longitudinally, and two pulleys are arranged vertically between the two limiting plates. The lifting cable hole is provided at the bottom of the limiting plates.

[0012] 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: Anchor boxes are installed at the bottom of the box girder top slab to reduce cable sag. The anchor boxes are connected to the bottom of the box girder top slab as a whole by anchor bolts to share the load. Longitudinal ribs are placed inside the anchor boxes to improve their rigidity. Steel supports, upper steel plates, lower steel plates, and lower anchor bolts are used to connect the bottom of the cable saddle to the concrete base slab, improving the load-bearing capacity of the hoisting device and facilitating the tensioning and anchoring of the steel strand cables. Upper and lower plate diagonal bracing improves the stability of the steel supports and ensures construction safety. Moving pulleys are arranged on the steel strand cables to facilitate rapid transportation of materials and equipment, improving transportation efficiency, reducing construction difficulty, and demonstrating good potential for widespread application. This device has a simple structure, is easy to construct, and has strong applicability and versatility. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a connection diagram of the steel strand cable and the mobile hoisting component of this utility model; Figure 4 This is a connection diagram of the pulley and the limiting plate in the mobile hoisting component of this utility model; Figure 5 This is a perspective view of the present invention.

[0015] In the diagram: 1. Upper anchor bolt; 2. Anchor box; 3. Longitudinal rib; 4. Upper steel pad; 5. Upper plate diagonal brace; 6. Column; 7. Horizontal connection; 8. Longitudinal connection; 9. Connecting diagonal brace; 10. Lower plate diagonal brace; 11. Lower steel pad; 12. Lower anchor bolt; 13. Movable hoisting component; 14. Steel strand cable; 15. Clamp; 16. Limiting plate; 17. Pulley; 18. Hoisting cable hole. Detailed Implementation

[0016] 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.

[0017] like Figures 1 to 4As shown, a cable hoisting device for reinforcing the interior of a large-span concrete box girder includes two sets of steel supports. Anchor boxes 2 are installed at the top of each set of steel supports, and the two anchor boxes 2 are connected by steel strand cables 14. Movable hoisting components 13 are installed on the steel strand cables 14. Each steel support includes columns 6, connecting rods, and connecting braces 9. Several sets of connecting rods are evenly arranged vertically on the outer wall of the columns 6. The connecting rods include transverse connections 7 and longitudinal connections 8, which are alternately arranged around the outer wall of the columns 6. The steel supports improve the load-bearing capacity of the hoisting device and facilitate the tensioning and anchoring of the steel strand cables 14.

[0018] In this embodiment, the anchor box 2 is anchored to the bottom of the top plate inside the box girder by upper anchor bolts 1. Longitudinal ribs 3 are provided inside the anchor box 2. The anchor box 2 is connected to the column 6 by upper steel pads 4. A lower steel pad 11 is provided at the bottom of the column 6, and the lower steel pad 11 is anchored to the bottom plate inside the box girder by lower anchor bolts 12. The anchor box 2 is connected to the bottom of the top plate of the box girder as a whole by upper anchor bolts 1 to share the load. The longitudinal ribs 3 inside the anchor box 2 improve its rigidity and facilitate the anchoring of the steel strand cable 14.

[0019] An upper plate diagonal brace 5 is welded between the bottom of the upper steel base plate 4 and the side wall of the column 6. The upper plate diagonal brace 5 is used to support the upper steel base plate 4. A lower plate diagonal brace 10 is welded between the side wall of the column 6 and the top of the lower steel base plate 11. The upper plate diagonal brace 5 and the lower plate diagonal brace 10 improve the stability of the steel support and ensure construction safety.

[0020] In this embodiment, the steel strand cable 14 is anchored to the anchor box 2 by the clamp 15.

[0021] In this embodiment, a connecting brace 9 is inclinedly provided between the transverse connections 7 between two adjacent sets of connecting rods, and the connecting brace 9 is connected to the outer wall of the column 6.

[0022] In this embodiment, two mobile lifting components 13 are provided. Each mobile lifting component 13 includes a lifting cable hole 18, two limiting plates 16, and two pulleys 17. The two limiting plates 16 are arranged longitudinally, and the two pulleys 17 are arranged vertically between the two limiting plates 16. The lifting cable hole 18 is provided at the bottom of the limiting plates 16. The mobile lifting components 13 facilitate the rapid transportation of materials and equipment, improving transportation efficiency. The longitudinal arrangement of the pulleys 17 ensures the stability of the material and equipment transportation process. The lifting cable hole 18 is used to arrange the lifting chain and lock the transported items. In use, the materials or equipment to be transported are hung on the bottom end of the lifting chain and lifted off the ground. Then, the worker pushes the material or lifting chain to move the pulleys 17 of the mobile lifting component 13 in a straight line along the steel strand cable 14 to the designated position. Moreover, the design of two mobile lifting components 13 can simultaneously meet the needs of two sets of materials moving a short distance within their respective areas, or the long-distance transportation of two sets of materials in the same direction, improving transportation efficiency.

[0023] Anchor box 2 is prefabricated in the factory, with its anchor bolt holes pre-arranged, and then transported to the required location. Before installation of anchor box 2, the lower steel pad 11 is connected to the bottom plate inside the box using the lower anchor bolt 12. Four columns 6 and lower plate diagonal braces 10 are welded onto the lower steel pad 11 to improve the stability of the columns 6. Then, transverse connections 7 and longitudinal connections 7 are welded onto the columns 6 in the horizontal and vertical directions, and diagonal braces 9 are welded in the diagonal direction to ensure the overall stability of the steel support. Anchor box 2 is installed using the upper anchor bolt 1, and the upper steel pad 4 is welded to the columns 6 of the steel support. Upper plate diagonal braces 5 are set up, and steel strand cable 14 is passed through the reserved holes on the anchor box 2 and anchored to the anchor box 2 using clamps 15. A movable lifting component 13 is installed on the steel strand cable 14, and a lifting chain is arranged on the lifting cable holes 18 on the movable lifting component 13. The above measures can reduce cable sag, increase the rigidity of anchor boxes and the load-bearing capacity of hoisting devices, ensure construction safety, facilitate rapid transportation of materials and equipment, and improve transportation efficiency.

[0024] 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 cable hoisting device for reinforcing the interior of a large-span concrete box girder, characterized in that: It includes two sets of steel supports, and anchor boxes (2) are set on the top of both sets of steel supports. The two anchor boxes (2) are connected by steel strand cable (14). A movable hoisting component (13) is set on the steel strand cable (14). The steel support includes a column (6), connecting rods and connecting braces (9). Several sets of connecting rods are evenly arranged on the outer wall of the column (6) in the vertical direction. The connecting rods include transverse connections (7) and longitudinal connections (8). The transverse connections (7) and longitudinal connections (8) are alternately arranged around the outer wall of the column (6).

2. The cable hoisting device for reinforcing the interior of a large-span concrete box girder according to claim 1, characterized in that: Anchor box (2) is anchored to the bottom of the top plate inside the box by upper anchor bolt (1). Anchor box (2) is provided with longitudinal rib (3). Anchor box (2) and column (6) are connected by upper steel pad (4). A lower steel pad (11) is provided at the bottom of column (6). The lower steel pad (11) is anchored to the bottom plate inside the box by lower anchor bolt (12).

3. The cable hoisting device for reinforcing the interior of a large-span concrete box girder according to claim 2, characterized in that: The bottom of the upper steel pad (4) is welded to the side wall of the column (6) with an upper plate diagonal brace (5), and the side wall of the column (6) is welded to the top of the lower steel pad (11) with a lower plate diagonal brace (10).

4. The cable hoisting device for reinforcing the interior of a large-span concrete box girder according to claim 1, characterized in that: The steel strand cable (14) is anchored to the anchor box (2) by the clamp (15).

5. The cable hoisting device for reinforcing the interior of a large-span concrete box girder according to claim 1, characterized in that: A connecting brace (9) is inclined between the transverse connections (7) between two adjacent sets of connecting rods, and the connecting brace (9) is connected to the outer wall of the column (6).

6. The cable hoisting device for reinforcing the interior of a large-span concrete box girder according to claim 1, characterized in that: Two mobile lifting components (13) are provided. Each mobile lifting component (13) includes a lifting cable hole (18), two limiting plates (16) and two pulleys (17). The two limiting plates (16) are arranged longitudinally, and two pulleys (17) are arranged vertically between the two limiting plates (16). The lifting cable hole (18) is provided at the bottom of the limiting plate (16).

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