Adjustable beam lifting station for precast beams

Abstract

The utility model relates to bridge construction device technical field, concretely relates to an adjustable beam lifting station of precast beam, including hoisting mechanism and support frame, hoisting mechanism includes two overhead travelling cranes, and the top of support frame is equipped with the track along bridge longitudinal direction, and at least one overhead travelling crane is slidably arranged on the track, and the support frame includes a plurality of steel pipe piles. The beam lifting station is simple in structure, and the erection efficiency is higher, the steel pipe piles are arranged according to the length and weight of the beam segment component to be hoisted, the longitudinal spacing of the steel pipe piles along the bridge is inversely proportional to the length and weight of the beam segment component, the longer the length of the beam segment component is, the heavier the weight is, the spacing of the steel pipe piles at the corresponding position is reduced accordingly, when each beam segment component is hoisted, the two overhead travelling cranes can be positioned on the midplane of the spacing between the two adjacent steel pipe piles in the longitudinal direction, stable hoisting is realized, the overall structure of the support frame does not need to be reinforced, the stable hoisting of the beam segment component of different specifications can also be satisfied, and the erection cost of the beam lifting station can be reduced accordingly.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction equipment, specifically to an adjustable beam lifting station for precast beams. Background Technology

[0002] In the construction of bridges and elevated roads, the lifting or installation of precast beam segments is generally carried out with the help of conventional lifting equipment such as truck cranes and crawler cranes. For construction locations that are not easily accessible by lifting equipment, it is necessary to set up a dedicated beam lifting station for beam lifting operations. The beam lifting station is generally fixed on the ground or on the existing bridge deck. The beam lifting and moving operations are achieved by setting a movable lifting mechanism on the support structure of the beam lifting station.

[0003] When a single construction project involves beam segments of varying lengths and specifications, the relative movement of support and lifting mechanisms is required to lift beam segments of different lengths. To meet the lifting and movement needs of the longest and heaviest beam segments in a single project, the structural strength of the support mechanism will need to be increased accordingly. However, strengthening the support mechanism as a whole to meet the lifting and movement needs of a small number of beam segments of the largest specifications will result in high construction costs for the support mechanism and affect construction efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing beam lifting stations in the prior art, which cannot coordinate the construction cost and efficiency with the stable and safe lifting of beam segments of different specifications and sizes, and to provide an adjustable beam lifting station for precast beams.

[0005] This utility model provides an adjustable beam lifting station for precast beams, comprising: The lifting mechanism includes two overhead cranes arranged in parallel, each overhead crane including a bridge frame and a lifting trolley slidably mounted on the bridge frame; A support frame, the top of which is provided with a track along the longitudinal direction of the bridge, and at least one of the overhead cranes is slidably mounted on the track; The support frame includes several steel pipe piles, which are arranged at intervals along the longitudinal direction of the bridge according to the length and weight of the beam segment to be lifted, so that when any beam segment is lifted, both overhead cranes can stand on the midpoint of the distance between two longitudinally adjacent steel pipe piles.

[0006] Preferably, the support frame includes fixed-end supports and movable-end supports spaced apart. The fixed-end supports include two lattice columns, and the movable-end supports include two rows of lattice foundations. The tracks are respectively arranged along the longitudinal direction of the bridge on the two rows of lattice foundations. One of the overhead cranes is detachably attached to the top of the two lattice columns, and the other overhead crane is slidably attached to the track.

[0007] Preferably, the lattice column comprises a plurality of steel pipe piles arranged in a matrix, and the lattice foundation comprises at least two rows of steel pipe piles arranged at intervals along the longitudinal direction of the bridge according to the length of the beam segment to be lifted. A plurality of horizontal connecting members are provided between adjacent steel pipe piles, and the plurality of horizontal connecting members are arranged at intervals in the vertical direction.

[0008] Preferably, the steel pipe pile sidewall is provided with a plurality of ear plates, and the flat connecting member is bolted to the ear plates.

[0009] Preferably, the system further includes a base, which comprises a reinforced concrete casting body, and anchors are pre-embedded in the base. The steel pipe pile is detachably connected to the base through the anchors.

[0010] Preferably, all the steel pipe piles of each lattice column share one base; adjacent rows of steel pipe piles of each lattice foundation share the base; several steel pipe piles adjacent along the longitudinal direction of the bridge share the base; and multiple bases are arranged at intervals along the longitudinal direction of the bridge.

[0011] Preferably, the top of the lattice foundation is provided with a number of support rods along the transverse direction of the bridge, the support rods overlap the top of the transversely adjacent steel pipe piles, and the top of the support rods is provided with a guide rod running through the longitudinal direction of the bridge, and the track is set on the guide rod.

[0012] Preferably, the top of the steel pipe pile is provided with an end plate, and a number of reinforcing ribs are distributed between the end plate and the side wall of the steel pipe pile, and the support rod overlaps the top surface of the end plate.

[0013] Preferably, the support rod comprises double-section I-beams, the guide rod comprises double-section I-beams, and the flat connecting member comprises several channel steel rods.

[0014] Preferably, the top of the lattice foundation is provided with end blocks, and two end blocks are fixedly installed at both ends of the track. The top of the lattice foundation is provided with a midpoint block, which is located at the midpoint of the distance between two adjacent steel pipe piles along the longitudinal direction of the bridge. The midpoint block can be moved into or out of the top surface of the lattice foundation in the vertical direction.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides an adjustable beam lifting station for precast beams, which uses steel pipe piles to form a support frame to support the overhead crane. The structure is simple and the construction efficiency is high. 2. This utility model provides an adjustable lifting station for precast beams. By arranging steel pipe piles according to the length and weight of the beam segment to be lifted, the spacing of the steel pipe piles along the longitudinal direction of the bridge is inversely proportional to the length and weight of the beam segment. The longer and heavier the beam segment, the smaller the spacing of the steel pipe piles at the corresponding position. When lifting each beam segment, two overhead cranes can stand on the midpoint of the spacing between two longitudinally adjacent steel pipe piles to achieve stable lifting. There is no need to strengthen the overall structure of the support frame, and it can also meet the stable lifting of beam segments of different specifications, thereby reducing the construction cost of the lifting station. Attached Figure Description

[0016] Figure 1 This is a front view of an adjustable beam lifting station for a precast beam according to Example 1.

[0017] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0018] Figure 3 This is a side view of an adjustable beam lifting station for a precast beam according to Example 1.

[0019] Figure 4 This is a top view of an adjustable beam lifting station for a precast beam according to Example 1.

[0020] Figure 5 This is a schematic diagram of the reinforcing rib and the end plate described in Example 1.

[0021] Figure 6 This is a partial top view of the lattice foundation described in Example 1.

[0022] Marked in the image: 01-Beam segment components, 1-Overhead crane, 11-Cable tray, 12-Lifting trolley, 2-Support frame, 21-Steel pipe pile, 22-Ear plate, 23-Fixed end support, 231-Lattice column, 24-Moving end support, 241-Lattice foundation, 25-Horizontal connecting component, 26-Rod, 27-Guide rod, 3-Railway, 4-Base, 5-Anchor, 6-End plate, 7-Reinforcing rib, 8-End stop, 9-Midpoint stop. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0024] Unless otherwise specified, the terms "upper," "lower," "midpoint," "inner," and "outer," etc., used in the description of specific embodiments of this utility model to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the use of terms such as "horizontal," "vertical," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in a "horizontal," "vertical," "parallel," or "coaxial" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0026] Furthermore, in the description of the embodiments of this utility model, "multiple" and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0027] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set," "install," "connect," and "equipped" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0028] Example 1 like Figures 1-6 As shown, an adjustable beam lifting station for precast beams includes a lifting mechanism and a support frame 2. The lifting mechanism includes two overhead cranes 1 arranged in parallel. Each overhead crane 1 includes a bridge frame 11 and a lifting trolley 12 slidably mounted on the bridge frame 11. The top of the support frame 2 is provided with a track 3 along the longitudinal direction of the bridge. At least one overhead crane 1 is slidably mounted on the track 3. The support frame 2 includes a plurality of steel pipe piles 21. The plurality of steel pipe piles 21 are arranged at intervals along the longitudinal direction of the bridge according to the length and weight of the beam segment component 01 to be lifted, so that when any beam segment component 01 is lifted, both overhead cranes 1 can be positioned on the midpoint of the distance between two longitudinally adjacent steel pipe piles 21.

[0029] This embodiment describes an adjustable lifting station for precast beams. It utilizes a support frame 2 composed of steel pipe piles 21 to support the overhead crane 1. The structure is simple and the construction efficiency is high. The steel pipe piles 21 are arranged according to the length and weight of the beam segment 01 to be lifted. The spacing of the steel pipe piles 21 along the longitudinal direction of the bridge is inversely proportional to the length and weight of the beam segment 01. The longer and heavier the beam segment 01, the smaller the spacing of the corresponding steel pipe piles 21. When lifting each beam segment 01, both overhead cranes 1 can stand on the midpoint of the spacing between two adjacent steel pipe piles 21 along the longitudinal direction of the bridge, effectively and evenly distributing the lifting force to the adjacent steel pipe piles 21 on both sides of the midpoint, achieving stable lifting. This eliminates the need for overall structural reinforcement of the support frame 2 and can still meet the stable lifting requirements of beam segments 01 of different specifications, thereby reducing the construction cost of the lifting station and improving construction efficiency.

[0030] In one or more implementations, such as Figure 1 , Figure 4 As shown, the support frame 2 includes fixed-end supports 23 and movable-end supports 24 spaced apart. The fixed-end supports 23 include two lattice columns 231, the tops of which can support a crane 1. The movable-end supports 24 include two rows of lattice foundations 241, with tracks 3 arranged longitudinally along the bridge on each of the two rows of lattice foundations 241. The top of the movable-end supports 24 slides to support another crane 1 via the tracks 3. With this structure, the fixed-end supports 23 and movable-end supports 24 can be spaced apart without the need for a support frame 2, which reduces the construction cost and improves construction efficiency. In use, the two lattice columns 231 are placed opposite each other on the transverse sides of the bridge deck, and the two rows of lattice foundations 241 are placed opposite each other on the transverse sides of the bridge deck, maintaining a suitable distance between the lattice columns 231 and the lattice foundations 241. A lifting mechanism is then installed on top to complete the erection of the lifting station.

[0031] In one or more implementations, such as Figure 4As shown, the lattice column 231 includes at least four steel pipe piles 21 arranged in a matrix, and the lattice foundation 241 includes at least two rows of steel pipe piles 21 arranged longitudinally along the bridge according to the length of the beam segment 01 to be lifted. Several horizontal connecting members 25 are provided between adjacent steel pipe piles 21, and these horizontal connecting members 25 are arranged at intervals in the vertical direction. This is to strengthen the connection between adjacent steel pipe piles 21 through the horizontal connecting members 25, ensuring the overall support strength of the support frame 2.

[0032] In an optional embodiment, the steel pipe pile 21 can be composed of multiple steel pipes connected by coaxial flanges, and the height of the steel pipe pile 21 is determined according to the required lifting height of the beam segment component 01 and the distance between the bridge deck.

[0033] In an optional embodiment, the spacing between two adjacent steel pipe piles 21 along the longitudinal direction of the bridge, the spacing between the fixed end support 23 and the movable end support 24, and the spacing between adjacent steel pipe piles 21 along the transverse direction of the bridge can all be determined by simulation calculation using a structural stress model to ensure that each beam segment component 01 of each specification has a crane 1 station position on the support frame 2 that meets its lifting requirements.

[0034] In optional implementations, such as Figure 1 , Figure 2 As shown, the sidewall of the steel pipe pile 21 is provided with several ear plates 22, and the horizontal connecting member 25 is bolted to the ear plates 22. The horizontal connecting member 25 is used to connect adjacent steel pipe piles 21 to strengthen the support frame 2 structure at the corresponding position. According to the actual situation, multiple ear plates 22 can be arranged vertically at intervals on the sidewall of the steel pipe pile 21. By adjusting the connection between the horizontal connecting member 25 and the ear plates 22 at different positions, support frames 2 with different structural strengths can be formed, realizing the quick adjustment of the overall structural strength of the lifting station and further improving the construction efficiency of the lifting station.

[0035] In optional implementations, such as Figure 1 As shown, horizontal connecting members 25 are provided between adjacent steel pipe piles 21 in the longitudinal direction of the bridge and between adjacent steel pipe piles 21 in the transverse direction of the bridge.

[0036] In one or more embodiments, the system further includes a base 4, which comprises a reinforced concrete casting body. Anchors 5 are pre-embedded within the base 4, and the steel pipe pile 21 is detachably connected to the base 4 via the anchors 5. The base 4 is used to support the stable installation of the steel pipe pile 21, effectively transferring and distributing the force on the steel pipe pile 21 to the ground.

[0037] In an optional implementation, all steel pipe piles 21 of each lattice column 231 share a single base 4; adjacent rows of steel pipe piles 21 of each lattice foundation 241 share a base 4; several steel pipe piles 21 adjacent along the bridge longitudinal direction share a base 4; and multiple bases 4 are arranged at intervals along the bridge longitudinal direction. By rationally planning the location and number of bases 4, compared to bases 4 for casting an integral structure, the number of bases 4 and the casting range can be reduced while meeting the requirements of the beam lifting station, thus reducing the amount of rebar binding. This is beneficial for further improving the construction efficiency of the beam lifting station and reducing construction costs.

[0038] In one or more implementations, such as Figure 4 As shown, the top of the lattice foundation 241 is provided with several support rods 26 along the transverse direction of the bridge. The support rods 26 overlap the tops of the adjacent steel pipe piles 21 along the transverse direction of the bridge. A guide rod 27 is installed through the top of the support rods 26 along the longitudinal direction of the bridge, and the track 3 is installed on the guide rod 27. The support rods 26 are used to connect the adjacent steel pipe piles 21 along the transverse direction of the bridge and provide stable support for the installation of the track 3. The support rods 26 overlap the top surface of the steel pipe piles 21, which can effectively distribute and transmit forces during the use of the beam lifting station.

[0039] In optional implementations, such as Figure 5 As shown, the top of the steel pipe pile 21 is provided with an end plate 6, and several reinforcing ribs 7 are distributed between the end plate 6 and the side wall of the steel pipe pile 21. The support rod 26 overlaps the top surface of the end plate 6. The end plate 6 closes the top opening of the steel pipe pile 21 to provide a plane for connecting the steel pipe pile 21 and the support rod 26. The reinforcing ribs 7 are arranged vertically along the radial direction of the steel pipe pile 21 and distributed around the steel pipe pile 21. The reinforcing ribs 7 are used to support the end plate 6, so that the connection between the end plate 6 and the steel pipe pile 21 is stable and the force on the end plate 6 is effectively distributed. The support rod 26 can be welded to the end plate 6 to ensure the stable setting of the support rod 26.

[0040] In an optional embodiment, the support rod 26 may include double-section I-beams or triple-section I-beams, and the guide rod 27 may include double-section I-beams or triple-section I-beams.

[0041] In one or more implementations, such as Figure 1 As shown, the top of the lattice foundation 241 is provided with end blocks 8, and the two end blocks 8 are fixedly set at both ends of the track 3.

[0042] In an optional embodiment, the end block 8 can be pressed onto the track 3, and the end block 8 is welded to the top of the lattice foundation 241 at the corresponding position to reinforce the position of the track 3 and improve the stability of the track 3.

[0043] In an optional embodiment, the end block 8 may be a steel block, steel plate or other fixed structure that can be welded to suitable positions at both ends of the track 3 to prevent the crane 1 from moving along the track 3 to the outside of the lattice foundation 241, thus ensuring the safe use of the lifting station.

[0044] In one or more implementations, such as Figure 1 , Figure 6 As shown, a midpoint block 9 can also be set on the top of the lattice foundation 241. The midpoint block 9 is set at the midpoint of the distance between two adjacent steel pipe piles 21 along the longitudinal direction of the bridge. The midpoint block 9 can be moved into or out of the top surface of the lattice foundation 241 in the vertical direction.

[0045] In an optional embodiment, the midpoint stop 9 can be a limit switch. The limit switch can be embedded in a suitable position, squeezed and retracted when the crane 1 moves past, and restored to the extended state after the crane 1 moves past. The limit switch can be linked with the control circuit of the crane 1 to ensure that after the crane 1 moves to the midpoint of the spacing, it stands at the midpoint to lift the beam segment component 01.

[0046] In an optional embodiment, the midpoint stop 9 can also be a steel plate or iron block connected by a spring and a tie rod. The midpoint stop 9 can be manually moved and retracted below the top surface of the lattice foundation 241 by pulling the tie rod, so that the crane 1 can move through. When the tie rod is not subjected to external force, the midpoint stop 9 extends out of the top surface of the lattice foundation 241 under the action of the spring, which can block the crane 1 and limit the movement range of the crane 1, so that the crane 1 can be accurately positioned on the midpoint surface of the two steel pipe piles 21 for lifting, in order to adapt to the length and weight of the beam segment component 01.

[0047] In optional implementations, such as Figure 6 As shown, the midpoint stop 9 can be set on the plate-shaped structural member that overlaps with the end of the adjacent support rod 26 along the longitudinal direction of the bridge. The plate-shaped structural member provides a suitable installation position for the midpoint stop 9 and can further increase the connection system of the adjacent steel pipe piles 21. The structural strength of the support frame 2 is improved through a simple and convenient structure.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable beam lifting station for precast beams, characterized in that, include: The lifting mechanism includes two overhead cranes (1) arranged in parallel. Each overhead crane (1) includes a bridge frame (11) and a lifting trolley (12) slidably arranged on the bridge frame (11). A support frame (2) is provided with a track (3) on the top of the support frame (2) along the longitudinal direction of the bridge, and at least one of the overhead cranes (1) is slidably mounted on the track (3); The support frame (2) includes a number of steel pipe piles (21). The number of steel pipe piles (21) are arranged at intervals along the longitudinal direction of the bridge according to the length and weight of the beam segment component (01) to be lifted, so that when any beam segment component (01) is lifted, the two overhead cranes (1) can stand on the midpoint of the distance between the two longitudinally adjacent steel pipe piles (21).

2. The adjustable beam lifting station for precast beams according to claim 1, characterized in that, The support frame (2) includes fixed end brackets (23) and movable end brackets (24) spaced apart. The fixed end brackets (23) include two lattice columns (231), and the movable end brackets (24) include two rows of lattice foundations (241). The tracks (3) are respectively arranged along the longitudinal direction of the bridge on the two rows of lattice foundations (241). One of the overhead cranes (1) is detachably attached to the top of the two lattice columns (231), and the other overhead crane (1) is slidably attached to the track (3).

3. The adjustable beam lifting station for precast beams according to claim 2, characterized in that, The lattice column (231) includes a plurality of steel pipe piles (21) arranged in a matrix. The lattice foundation (241) includes at least two rows of steel pipe piles (21) arranged at intervals along the longitudinal direction of the bridge according to the length and weight of the beam segment component (01) to be lifted. A plurality of horizontal connecting members (25) are provided between adjacent steel pipe piles (21). The plurality of horizontal connecting members (25) are arranged at intervals in the vertical direction.

4. The adjustable beam lifting station for precast beams according to claim 3, characterized in that, The steel pipe pile (21) has several ear plates (22) on its side wall, and the flat connecting member (25) is bolted to the ear plates (22).

5. The adjustable beam lifting station for precast beams according to claim 3, characterized in that, It also includes a base (4), which includes a reinforced concrete casting body, and an anchor (5) is pre-embedded in the base (4). The steel pipe pile (21) and the base (4) are detachably connected through the anchor (5).

6. The adjustable beam lifting station for precast beams according to claim 5, characterized in that, All the steel pipe piles (21) of each lattice column (231) share a base (4); the steel pipe piles (21) of adjacent rows of each lattice foundation (241) share the base (4), a number of steel pipe piles (21) that are adjacent along the longitudinal direction of the bridge share the base (4), and a number of bases (4) are arranged at intervals along the longitudinal direction of the bridge.

7. The adjustable beam lifting station for precast beams according to claim 3, characterized in that, The top of the lattice foundation (241) is provided with several support rods (26) along the transverse direction of the bridge. The support rods (26) overlap the top of the adjacent steel pipe piles (21) in the transverse direction. The top of the support rods (26) is provided with guide rods (27) running through the longitudinal direction of the bridge. The track (3) is set on the guide rods (27).

8. The adjustable beam lifting station for precast beams according to claim 7, characterized in that, The steel pipe pile (21) is provided with an end plate (6) at the top, and a number of reinforcing ribs (7) are distributed between the end plate (6) and the side wall of the steel pipe pile (21). The support rod (26) overlaps the top surface of the end plate (6).

9. An adjustable beam lifting station for precast beams according to claim 8, characterized in that, The support rod (26) includes double-jointed I-beams, the guide rod (27) includes double-jointed I-beams, and the flat connecting member (25) includes several channel steel rods.

10. An adjustable beam lifting station for precast beams according to any one of claims 3-9, characterized in that, The top of the lattice foundation (241) is provided with end blocks (8), and two end blocks (8) are fixedly set at both ends of the track (3). The top of the lattice foundation (241) is provided with a midpoint block (9), which is set at the midpoint of the distance between two adjacent steel pipe piles (21) along the longitudinal direction of the bridge. The midpoint block (9) can be moved into or out of the top surface of the lattice foundation (241) in the vertical direction.

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