A balanced lifting tool for long-section eccentrically loaded steel box girder hoisting
Patent Information
- Application Number
- CN202522317153.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0004]本实用新型的目的在于提供一种用于长节段偏载钢箱梁吊装的平衡吊具，通过设置调节部，解决了现有的平衡吊具在使用过程中，吊点位置多为固定设计，仅能匹配特定长度、宽度的钢箱梁，当面对不同尺寸的梁体时，需更换整套吊具或进行复杂改装，不仅耗时费力，还大幅增加了设备投入成本的问题
本实用新型一种用于长节段偏载钢箱梁吊装的平衡吊具，包括支撑杆，通过设置调节部，拉动把手时，弹簧受力拉伸带动限位杆脱离限位孔，解除滑块的固定状态，使滑块可沿滑轨灵活滑动以适配不同尺寸钢箱梁的吊装需求；当滑块移动至对应位置后，松开把手，弹簧的复位弹力驱动限位杆自动插入新的限位孔，完成滑块的重新固定，能适配不同长度、宽度钢箱梁的吊装需求，确保吊点始终与钢箱梁重心精准匹配，又能通过限位杆与限位孔的可靠配合保证固定强度，在提升吊具通用性的同时，兼顾了调节便捷性与作业安全性，有效扩大了吊具的适用范围，降低了更换吊具或改装设备的成本；
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Figure CN224917310U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of hoisting devices, and in particular relates to a balancing hoisting device for hoisting long-segment eccentrically loaded steel box girders. Background Technology
[0002] As bridge construction moves towards longer spans and lighter weights, the application of long-segment steel box girders is becoming increasingly widespread. Due to differences in structural design, these steel box girders generally exhibit eccentric loading characteristics, which can easily lead to tilting and torsion during hoisting. The core requirements for hoisting operations are concentrated on two points: first, balance control, which requires real-time offsetting of the eccentric load to ensure that the beam remains in a horizontal position and avoid structural damage caused by local stress concentration due to tilting; second, adaptability, which requires meeting the hoisting needs of steel box girders of different lengths and widths while being compatible with complex on-site conditions.
[0003] However, existing balancing spreaders are mostly designed with fixed lifting points, which can only match steel box girders of specific lengths and widths. When dealing with beams of different sizes, the entire spreader needs to be replaced or complex modifications need to be made, which is not only time-consuming and labor-intensive, but also significantly increases the equipment investment cost. Utility Model Content
[0004] The purpose of this utility model is to provide a balancing lifting device for hoisting long-segment eccentrically loaded steel box girders. By setting an adjustment part, it solves the problem that existing balancing lifting devices are mostly designed with fixed lifting points, which can only match steel box girders of specific lengths and widths. When dealing with beams of different sizes, it is necessary to replace the entire lifting device or make complex modifications, which is not only time-consuming and labor-intensive, but also greatly increases the equipment investment cost.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a balancing lifting device for hoisting long-segment eccentrically loaded steel box girders, comprising a support rod and further comprising: an adjustment part mounted on the support rod; two mounting parts, each mounted on the support rod; the adjustment part comprising a sliding assembly mounted on the support rod; and a limiting assembly mounted on the sliding assembly; the sliding assembly comprising a slide rail fixedly connected to the top of the support rod, a slider slidably connected to the slide rail, a hinge block fixedly connected to the top of the slider, and a limiting member provided on the slide rail; the slide rail is T-shaped, the slider is adapted to the slide rail, and the limiting member comprises several limiting holes formed on the slide rail, with a limiting rod passing through the corresponding limiting holes.
[0006] Furthermore, the mounting part includes a connecting component, which is disposed on the support rod.
[0007] Furthermore, the anti-detachment component is mounted on the connecting component, and both the connecting component and the anti-detachment component are located at the bottom of the support rod.
[0008] Furthermore, the limiting component includes a limiting rod disposed on the slider, a fixing ring fixedly connected to the outer wall of the limiting rod, a spring sleeved on the outer wall of the limiting rod, an auxiliary component disposed on the limiting rod, the initial state of the spring being a stretched state, and the auxiliary component including a handle fixedly connected to the front side of the limiting rod, the handle being ring-shaped.
[0009] Furthermore, the connecting assembly includes a mounting plate fixedly connected to the bottom of the support rod, the mounting plate having an insertion hole, and the mounting plate being located at the bottom of the support rod.
[0010] Furthermore, the anti-detachment component includes a limiting pin disposed in the insertion hole, an anti-detachment pin passing through the limiting pin, the anti-detachment pin being adapted to the limiting pin, and the anti-detachment pin being in contact with the outer wall of the limiting pin.
[0011] This utility model has the following beneficial effects: This utility model discloses a balancing lifting device for hoisting long-segment eccentrically loaded steel box girders. It includes a support rod and an adjustment mechanism. When the handle is pulled, the spring is stretched, causing the limiting rod to disengage from the limiting hole, releasing the slider from its fixed state. This allows the slider to slide flexibly along the slide rail to accommodate the hoisting requirements of steel box girders of different sizes. When the slider moves to the corresponding position, releasing the handle causes the spring's restoring force to automatically insert the limiting rod into a new limiting hole, re-fixing the slider. This device can adapt to the hoisting requirements of steel box girders of different lengths and widths, ensuring that the lifting point is always precisely matched with the center of gravity of the steel box girder. The reliable cooperation between the limiting rod and the limiting hole guarantees the fixing strength. While improving the versatility of the lifting device, it also considers ease of adjustment and operational safety, effectively expanding the application range of the lifting device and reducing the cost of replacing lifting devices or modifying equipment. By setting up an installation section, the initial positioning is first completed through precise alignment of the suspension hook and the installation plate to ensure the accuracy of the connection position. Then, the limit pin passes through the installation plate and the suspension hook to form the main connection structure, achieving rigid fixation of the two. Finally, a secondary locking is achieved by inserting an anti-detachment pin into the reserved hole of the limit pin, constructing double protection. This ensures the precise alignment of the steel box girder and the lifting equipment, and the rigid connection of the limit pin bears the lifting load. The anti-detachment pin fundamentally eliminates the risk of the limit pin accidentally falling off, minimizing the possibility of the steel box girder swaying or falling off during the lifting process. This provides a stable and reliable connection guarantee for the lifting operation of steel box girders of different sizes, further enhancing construction safety.
[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the mounting part of this utility model; Figure 3 This is a partial structural diagram of the anti-detachment component of this utility model; Figure 4 This is a partial cross-sectional view of the adjustment part of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of A in the middle; Figure 6 This utility model Figure 2 A magnified structural diagram of B in the diagram.
[0015] The attached diagram lists the components represented by each number as follows: 111. Support rod; 2. Adjustment part; 21. Sliding assembly; 211. Slide rail; 212. Slider; 213. Hinge block; 214. Limiting hole; 22. Limiting assembly; 221. Limiting rod; 222. Fixing ring; 223. Spring; 224. Handle; 3. Mounting part; 31. Connecting assembly; 311. Mounting plate; 312. Insertion hole; 32. Anti-detachment assembly; 321. Limiting pin; 322. Anti-detachment pin. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-6 As shown, this utility model is a balancing lifting device for hoisting long-segment eccentrically loaded steel box girders, including a support rod 111, and also including: an adjustment part 2, which is installed on the support rod 111; and an installation part 3, of which there are two, both of which are installed on the support rod 111. The adjusting part 2 includes a sliding assembly 21, which is mounted on the support rod 111; and a limiting assembly 22, which is disposed on the sliding assembly 21. The sliding assembly 21 includes a slide rail 211 fixedly connected to the top of the support rod 111, a slider 212 slidably connected to the slide rail 211, a hinge block 213 fixedly connected to the top of the slider 212, and a limiting member provided on the slide rail 211. The slide rail 211 is T-shaped, and the slider 212 is adapted to the slide rail 211. The limiting member includes several limiting holes 214 formed on the slide rail 211, and a limiting rod 221 passing through the corresponding limiting holes 214. The limiting assembly 22 includes a limiting rod 221 disposed on the slider 212. A fixing ring 222 is fixedly connected to the outer wall of the 21, and a spring 223 is sleeved on the outer wall of the limiting rod 221. An auxiliary component is provided on the limiting rod 221. The initial state of the spring 223 is a stretched state. The auxiliary component includes a handle 224 fixedly connected to the front side of the limiting rod 221. The handle 224 is in the shape of a ring. By setting the adjustment part 2, it can adapt to the hoisting requirements of steel box girders of different lengths and widths, ensuring that the hoisting point is always accurately matched with the center of gravity of the steel box girder. It can also ensure the fixing strength through the reliable cooperation between the limiting rod 221 and the limiting hole 214. While improving the versatility of the lifting tool, it also takes into account the convenience of adjustment and the safety of operation, effectively expanding the application range of the lifting tool and reducing the cost of replacing the lifting tool or modifying the equipment.
[0018] The mounting part 3 includes a connecting assembly 31, which is mounted on the support rod 111; and an anti-detachment assembly 32, which is mounted on the connecting assembly 31. Both the connecting assembly 31 and the anti-detachment assembly 32 are located at the bottom of the support rod 111. The connecting assembly 31 includes a mounting plate 311 fixedly connected to the bottom of the support rod 111, and the mounting plate 311 has an insertion hole 312. The anti-detachment assembly 32 includes a limiting pin 321 disposed in the insertion hole 312, through which a through-hole is formed. There is an anti-detachment pin 322, which is compatible with the limit pin 321. The outer wall of the anti-detachment pin 322 fits into the limit pin 321. By setting the installation part 3, the precise alignment of the steel box girder and the lifting tool is ensured. The rigid connection of the limit pin 321 bears the lifting load. The anti-detachment pin 322 fundamentally eliminates the risk of the limit pin accidentally falling off, and minimizes the possibility of the steel box girder swaying or falling off during the lifting process. It provides a stable and reliable connection guarantee for the lifting operation of steel box girders of different sizes, and further enhances the construction safety.
[0019] One specific application of this embodiment is as follows: During use, the position of the slider 212 on the slide rail 211 is adjusted according to the different sizes of the steel box girder. During adjustment, the handle 224 is pulled first, stretching the spring 223. As the handle 224 is pulled, the limiting rod 221 slides out of the limiting hole 214. Then, the slider 212 is pushed to slide back and forth on the slide rail 211. When it slides to the corresponding limiting hole 214, the handle 224 is released. At this point, the spring 223 will retract inward along with the limiting rod 221, and then... Insert the slider 212 into the limiting hole 214 to fix it in place. This allows the slider 212 to be adjusted according to different steel box girder dimensions. After adjustment, align the suspension hook on the steel box girder with the corresponding mounting plate 311, place the suspension hook on the mounting plate 311, insert the limiting pin 321 into the mounting plate 311 and through the suspension hook, and then insert the anti-detachment pin 322 into the reserved hole on the limiting pin 321 to limit the position of the limiting pin 321 and prevent the limiting pin 321 from falling off.
[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders, comprising a support rod (111), characterized in that, Also includes: Adjustment part (2), the adjustment part (2) is mounted on support rod (111); Mounting part (3), there are two mounting parts (3), both of which are mounted on the support rod (111); The adjusting part (2) includes a sliding assembly (21) mounted on a support rod (111); and A limiting component (22) is disposed on the sliding component (21); The sliding assembly (21) includes a slide rail (211) fixedly connected to the top of the support rod (111), a slider (212) slidably connected on the slide rail (211), a hinge block (213) fixedly connected to the top of the slider (212), and a limiting member provided on the slide rail (211). The slide rail (211) is T-shaped, and the slider (212) is adapted to the slide rail (211).
2. The balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 1, characterized in that, The mounting part (3) includes a connecting assembly (31) disposed on the support rod (111); and Anti-detachment component (32), said anti-detachment component (32) is mounted on the connecting component (31); The connecting component (31) and the anti-detachment component (32) are both located at the bottom of the support rod (111).
3. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 2, characterized in that, The limiting component (22) includes a limiting rod (221) disposed on the slider (212), a fixing ring (222) is fixedly connected to the outer wall of the limiting rod (221), a spring (223) is sleeved on the outer wall of the limiting rod (221), and auxiliary parts are provided on the limiting rod (221); The initial state of the spring (223) is that it is stretched.
4. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 3, characterized in that, The connecting assembly (31) includes a mounting plate (311) fixedly connected to the bottom of the support rod (111), and the mounting plate (311) has an insertion hole (312). The mounting plate (311) is located at the bottom of the support rod (111).
5. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 4, characterized in that, The anti-detachment component (32) includes a limiting pin (321) disposed in the insertion hole (312), and an anti-detachment pin (322) passes through the limiting pin (321), and the anti-detachment pin (322) is adapted to the limiting pin (321).
6. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 5, characterized in that, The anti-detachment pin (322) is attached to the outer wall of the limiting pin (321).
7. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 5, characterized in that, The limiting element includes a plurality of limiting holes (214) formed on the slide rail (211).
8. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 7, characterized in that, in, The limiting rod (221) passes through the corresponding limiting hole (214).
9. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 7, characterized in that, The auxiliary component includes a handle (224) fixedly connected to the front side of the limiting rod (221).
10. A balancing lifting device for hoisting long-segment eccentrically loaded steel box girders according to claim 8, characterized in that, The handle (224) is in the shape of a ring.