Multi-point lifting appliance for variable cross-section steel member
By designing a variable cross-section steel component lifting tool with movable lifting beams and sliding lifting lugs, the problem of insufficient versatility of traditional lifting tools was solved, enabling safe and efficient lifting of complex steel space frame structures and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional lifting tools have significant limitations and are not very versatile. They cannot be used for steel components with variable cross-sections and weak rigidity that require multi-point lifting, and they also pose safety hazards.
Design a multi-point lifting device for variable cross-section steel components. It adopts a rectangular frame structure for the lifting frame and lifting beam. The lifting beam is movable, the lifting lugs are slidable, and the position is fixed by threaded connection, so that the lifting points can be adjusted arbitrarily.
It enables flexible hoisting of steel components with different cross-sectional dimensions, improving safety and hoisting efficiency while reducing construction costs.
Smart Images
Figure CN224147492U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bridge steel structure hoisting, specifically relating to a multi-point hoisting tool for variable cross-section steel components. Background Technology
[0002] With the continuous improvement of urbanization, bridge steel structure products are becoming increasingly complex and diverse in form. This has led to the emergence of steel space frame structures, which typically consist of multiple steel columns and small steel connecting systems. The entire structure is a spatially inclined, variable cross-section structure with relatively weak overall stiffness. Specialized lifting equipment is required for the transportation and hoisting of these components. When selecting lifting equipment, factors such as the weight of the steel component and the control of hoisting deformation must be comprehensively considered. Traditional steel component hoisting equipment consists of two spreader beams or rectangular fixed frame beams.
[0003] Traditional spreader beam or rectangular fixed frame beam lifting devices have the following main disadvantages: ① They are highly limited and lack versatility. They become unusable when the outline dimensions, center of gravity, or lifting point positions of the steel component change significantly; ② Traditional lifting devices typically have only four lifting points. For spatial steel space frame structures, this insufficient number of lifting points can easily cause overall deformation of the steel component and poses significant safety hazards; ③ They are not suitable for steel components with variable cross-sections or weak rigidity that require multiple lifting points. Summary of the Invention
[0004] To address the problems existing in the prior art, this utility model designs a multi-point lifting device for variable cross-section steel components, which can meet the lifting requirements of various cross-sectional sizes and multiple steel space frame structures. Specifically, by simply moving the threaded steel bar, the lifting lugs on the device can be moved arbitrarily on the horizontal plane, meeting the lifting needs of complex variable cross-section steel space frame structures. At the same time, it is safe and reliable, has high construction efficiency, and significantly reduces costs and increases efficiency.
[0005] This utility model provides a multi-point hoisting tool for variable cross-section steel components, including a hanger and several lifting beams. The hanger is characterized in that the hanger is a rectangular frame structure composed of two hanger cross beams and two hanger longitudinal beams. The lifting beams are placed parallel to the hanger cross beams on the hanger longitudinal beams, and the lifting beams can move along the hanger longitudinal beams to change their positions. The lifting beams are also provided with several sliding lifting lugs that can move along the lifting beams.
[0006] Furthermore, a No. 1 reaction seat is provided at the top of each end of the hanger beam, and a No. 1 screw is connected between a pair of No. 1 reaction seats on the two hanger beams. The No. 1 screw passes through the hanger beam, and two No. 1 positioning nuts are threadedly connected to the No. 1 screw on both sides of the hanger beam. The No. 1 positioning nuts clamp the hanger beam from both sides, thereby fixing the longitudinal position of the hanger beam.
[0007] Furthermore, the sliding lug has a sliding hole in the middle, through which the lifting beam passes; a second reaction seat is provided at the top of each end of the lifting beam, and a second screw is connected between the second reaction seats. The second screw passes through the top of the sliding lug, and two second positioning nuts are threadedly connected to the second screw on both sides of the top of the sliding lug. The second positioning nuts clamp the sliding lug from both sides, thereby fixing the lateral position of the sliding lug.
[0008] Furthermore, a lifting hole is provided below the sliding hole, and a positioning frame plate is provided above the sliding hole, through which the second screw passes.
[0009] Furthermore, a baffle is provided at the bottom of the lifting beam, and the baffle is locked on the outside of the longitudinal beam of the hanger to fix the lifting beam and prevent it from moving laterally.
[0010] Furthermore, a reinforcing beam is provided between the hanger beams, and both ends of the reinforcing beam are fixedly connected to the inner side of the hanger longitudinal beam.
[0011] Furthermore, both the hanger beam and the hanger beam are strip beams with an I-shaped cross section.
[0012] Furthermore, the longitudinal beams of the hanger are box beams with rectangular cross-sections, and each longitudinal beam of the hanger is provided with hanger lugs at both ends.
[0013] Compared with the prior art, the advantages of this utility model are as follows: ① There are many lifting points, and the horizontal direction of the lifting points can be adjusted according to the steel components with different cross-sectional dimensions. The adjustment is convenient and quick. It has high safety and controllable deformation when lifting steel components with weak rigidity; ② It has a wide range of applications, strong versatility, simple operation, and high lifting efficiency; ③ It can realize the lifting of various complex variable cross-section steel components, which significantly reduces costs and increases efficiency. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the hanger beam in the embodiment;
[0016] Figure 3 This is a schematic diagram of the longitudinal beam of the hanger in the embodiment;
[0017] Figure 4 This is a schematic diagram of the structure of the suspension beam in the embodiment;
[0018] Figure 5 This is a schematic diagram of the sliding lug structure in the embodiment. Detailed Implementation
[0019] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0020] like Figure 1 As shown, an embodiment of this utility model includes a hanger 1 and three hanger beams 2. The hanger 1 comprises two hanger crossbeams 1-1 and two hanger longitudinal beams 1-2, which form a rectangular frame structure. A reinforcing crossbeam 1-3 is provided between the hanger crossbeams 1-1, with both ends of the reinforcing crossbeam 1-3 fixed to the inner side of the hanger longitudinal beams 1-2. The three hanger beams 2 are placed parallel to the hanger crossbeams 1-1 on the hanger 1, and their longitudinal positions can be arbitrarily changed. A total of ten sliding lifting lugs 2-1 are provided on the three hanger beams 2, which can move along the hanger beams 2.
[0021] like Figure 2 As shown, the hanger beam 1-1 is a strip beam with an I-shaped cross section. The upper and lower parts are the beam flange plates 1-1-1, and the middle part is the beam web plate 1-1-2. A beam stiffener 1-1-3 is also provided between the beam flange plates 1-1-1 and the beam web plate 1-1-2. A reaction seat 1-1-4 is provided at the top of each end of the hanger beam 1-1.
[0022] like Figure 3 As shown, the longitudinal beam 1-2 of the hanger is a box beam with a rectangular cross-section. The upper and lower parts are longitudinal beam flange plates 1-2-1, and the left and right parts are longitudinal beam web plates 1-2-2. The inner cavity of the longitudinal beam 1-2 is equipped with longitudinal beam stiffeners 1-2-3, and each longitudinal beam 1-2 has hanger lugs 1-2-4 at both ends. The hanger lugs 1-2-4 are connected to the lifting wire rope.
[0023] like Figure 4 As shown, the lifting beam 2 is similar to the aforementioned crossbeam 1-1 of the hanger, and is a strip beam with an I-shaped cross-section. The upper and lower parts are the lifting beam flange plates 2-2, and the middle part is the lifting beam web plate 2-3. A lifting beam stiffener 2-4 is also provided between the lifting beam flange plates 2-2 and the lifting beam web plate 2-3. Figure 1 As shown, a screw rod 1-1-5 is connected between a pair of No. 1 reaction seats 1-1-4 on the two hanger beams 1-1, and passes through the hanger beam 2. Two No. 1 positioning nuts 1-1-6 are threaded onto the screw rod 1-1-5, passing through the corresponding hanger beam 2 on both sides. The No. 1 positioning nuts 1-1-6 clamp the hanger beam 2 from both sides, thereby fixing the longitudinal position of the hanger beam 2.
[0024] The structure of the sliding lug 2-1 is as follows Figure 5 As shown, a sliding lug 2-1 has a sliding hole 2-1-2 in the middle, through which the lifting beam 2 passes. Below the sliding hole 2-1-2 is a lifting hole 2-1-3, and above the sliding hole 2-1-2 is a positioning frame plate 2-1-1. Figure 4 As shown, each end of the lifting beam 2 is provided with a No. 2 reaction seat 2-6, and a No. 2 screw 2-7 is connected between the two No. 2 reaction seats 2-6, which passes through the positioning frame plate 2-1-1. Two No. 2 positioning nuts 2-8 are threadedly connected to the No. 2 screw 2-7 on both sides of the positioning frame plate 2-1-1, respectively. The No. 2 positioning nuts 2-8 clamp the positioning frame plate 2-1-1 from both sides, thereby fixing the lateral position of the sliding lifting lug 2-1.
[0025] To increase the stability of the lifting beam 2, a baffle 2-5 is provided at the bottom of the lifting beam 2. The baffle 2-5 is locked on the outside of the longitudinal beam 1-2 of the hanger to fix the lifting beam 2 and prevent it from moving laterally.
[0026] During hoisting operations, the lateral position of the sliding lug 2-1 in this embodiment can be flexibly adjusted according to the lifting point position of the steel component being hoisted. After adjustment, the lateral position of the sliding lug 2-1 is locked by the second positioning nut 2-8 and the second screw 2-7. The longitudinal position of the sliding lug 2-1 is adjusted along with the hoisting beam 2. Similarly, after adjustment, the longitudinal position of the hoisting beam 2 is locked by the first positioning nut 1-1-6 and the first screw 1-1-5.
[0027] This utility model is a brand-new lifting tool specifically designed for spatial variable cross-section steel components. It enables the arbitrary movement of each lifting lug on the horizontal plane, and can meet the lifting needs of steel components with various cross-sectional dimensions, multi-section steel space frame structure steel components, and complex variable cross-section steel space frame structure steel components. During the lifting process, the overall structure of the steel component has good stress resistance and controllable lifting deformation. At the same time, it is safe and reliable, has high construction efficiency, and significantly reduces costs and increases efficiency.
Claims
1. A multi-point lifting device for variable cross-section steel components, comprising a lifting frame (1) and several lifting beams (2), characterized in that, The hanger (1) is a rectangular frame structure consisting of two hanger crossbeams (1-1) and two hanger longitudinal beams (1-2). The hanger beam (2) is placed on the hanger longitudinal beam (1-2) parallel to the hanger crossbeam (1-1), and the hanger beam (2) can move along the hanger longitudinal beam (1-2) to change its position. The hanger beam (2) is also provided with several sliding lugs (2-1) that can move along the hanger beam (2).
2. The variable cross-section steel member multi-point lifting spreader according to claim 1, characterized in that, At the top of each end of the hanger beam (1-1), there is a No. 1 reaction seat (1-1-4). A No. 1 screw (1-1-5) is connected between a pair of No. 1 reaction seats (1-1-4) on the two hanger beams (1-1). The No. 1 screw (1-1-5) passes through the hanger beam (2), and two No. 1 positioning nuts (1-1-6) are threadedly connected to the two sides of the No. 1 screw (1-1-5) passing through the hanger beam (2). The No. 1 positioning nuts (1-1-6) clamp the hanger beam (2) from both sides, thereby fixing the longitudinal position of the hanger beam (2).
3. The variable cross-section steel member multi-point lifting spreader according to claim 1, characterized in that, The sliding lug (2-1) has a sliding hole (2-1-2) in the middle, and the lifting beam (2) passes through the sliding hole (2-1-2). The top of each end of the lifting beam (2) is provided with a second reaction seat (2-6), and a second screw (2-7) is connected between the second reaction seats (2-6). The second screw (2-7) passes through the top of the sliding lug (2-1), and two second positioning nuts (2-8) are threaded on both sides of the second screw (2-7) passing through the top of the sliding lug (2-1). The second positioning nuts (2-8) clamp the sliding lug (2-1) from both sides, thereby fixing the lateral position of the sliding lug (2-1).
4. The variable cross-section steel member multi-point lifting spreader according to claim 3, characterized by Below the sliding hole (2-1-2) is a lifting hole (2-1-3), and above the sliding hole (2-1-2) is a positioning frame plate (2-1-1). The second screw (2-7) passes through the positioning frame plate (2-1-1).
5. The variable cross-section steel member multi-point lifting spreader of claim 1, wherein, The bottom of the lifting beam (2) is provided with a baffle (2-5), which is locked on the outside of the longitudinal beam (1-2) of the hanger to fix the lifting beam (2) and prevent it from moving laterally.
6. The variable cross-section steel member multi-point lifting spreader of claim 1, wherein A reinforcing beam (1-3) is provided between the hanger beams (1-1), and the two ends of the reinforcing beam (1-3) are fixedly connected to the inner side of the hanger longitudinal beam (1-2).
7. The variable cross-section steel member multi-point lifting spreader of claim 1, wherein Both the hanger beam (1-1) and the hanger beam (2) are strip beams with an I-shaped cross section.
8. The variable cross-section steel member multi-point lifting spreader of claim 1, wherein, The hanger longitudinal beam (1-2) is a box beam with a rectangular cross section, and each hanger longitudinal beam (1-2) is provided with hanger lugs (1-2-4) at both ends.