Slidable lifting point adjusting structure for steel structure hoisting

Abstract

The utility model relates to steel structure hoisting technical field, concretely is a kind of slidable lifting point adjusting structure for steel structure hoisting, including base, the bottom of base is equipped with the L-shaped guide rail plate of symmetrical distribution, the vertical web of L-shaped guide rail plate is oppositely arranged and has gap, lifting point sliding seat that can slide along the length direction of steel structure is equipped in this gap, the bottom of lifting point sliding seat is equipped with downwardly extending inlay boss, and the top of lifting point sliding seat is equipped with vertical through lifting hole, both sides in the inside of lifting point sliding seat are equipped with transversely arranged wedge locking block, and adjusting screw rod is threaded on the side wall of lifting point sliding seat. This slidable lifting point adjusting structure for steel structure hoisting can realize the flexible adjustment and quick fixing of lifting point position, effectively improves hoisting adaptability, construction efficiency and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of steel structure hoisting technology, specifically to a sliding lifting point adjustment structure for steel structure hoisting. Background Technology

[0002] In modern large-scale construction projects, steel structures are widely used in factories, bridges, high-rise buildings, and other fields due to their advantages such as high strength, light weight, and short construction period. Steel structure components usually need to be installed at high altitudes using hoisting equipment, and the reasonable arrangement of hoisting points plays a decisive role in the safety and efficiency of the hoisting process.

[0003] In current hoisting operations, most hoisting point structures adopt a fixed design, meaning that the lifting lugs or rings are directly welded or bolted to the pre-set positions of the steel components. Once installed, this structure cannot be adjusted. When encountering situations such as component center of gravity shift, changes in lifting angle, or temporary changes in site conditions, the original hoisting point positions often fail to meet the actual stress requirements. Especially in the hoisting of irregular or asymmetrical steel structures, fixed hoisting points cannot simultaneously ensure overall balance and uniform stress distribution in different parts, easily leading to component tilting, localized stress concentration, or even hoisting instability. This not only increases construction difficulty but may also affect installation accuracy and operational safety. Utility Model Content

[0004] The purpose of this utility model is to provide a sliding lifting point adjustment structure for steel structure hoisting, so as to solve the problems mentioned in the background art, that the lifting point position of the current steel structure hoisting structure is fixed and cannot be flexibly adjusted according to the actual hoisting needs, resulting in uneven force, installation difficulties and safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sliding lifting point adjustment structure for steel structure hoisting, comprising a base, the bottom of which is provided with symmetrically distributed L-shaped guide rail plates, the vertical webs of the L-shaped guide rail plates being arranged opposite each other with a gap, a lifting point sliding seat that can slide along the length of the steel structure being provided in the gap, the bottom of the lifting point sliding seat being provided with a downwardly extending fitting boss, and the top of the lifting point sliding seat being provided with a vertically penetrating lifting through hole, both sides of the interior of the lifting point sliding seat being provided with transversely arranged wedge-shaped locking blocks, and an adjusting screw being provided on the side wall of the lifting point sliding seat.

[0006] Preferably, the inner side of the vertical web of the L-shaped guide plate is provided with a T-shaped guide groove extending along the length direction, and the outer corner of the L-shaped guide plate is provided with a triangular reinforcing rib arranged along the entire length.

[0007] Preferably, the two sides of the fitting boss are provided with T-shaped sliding keys that match the T-shaped guide groove, and the T-shaped sliding keys are embedded in the T-shaped guide groove to form an anti-disengagement sliding fit.

[0008] Preferably, the wedge-shaped locking block has a trapezoidal cross-section, with its outer end face facing the inner side of the vertical web of the L-shaped guide plate, and the wedge-shaped locking block is provided with guide posts at both ends, the guide posts being slidably fitted in the transverse guide holes inside the lifting point sliding seat.

[0009] Preferably, one end of the adjusting screw passes through a threaded hole on the side wall of the lifting point sliding seat and abuts against the spherical recess on the back of the wedge-shaped locking block, and the other end of the adjusting screw is provided with an external hexagonal head.

[0010] Preferably, the top of the lifting point sliding seat is provided with an annular reinforcing rib, and the lifting through hole is located at the center of the annular reinforcing rib, and the inner wall of the lifting through hole is provided with a chamfer.

[0011] Compared with existing technologies, the beneficial effects of this utility model are: the adjustable sliding lifting point structure for steel structure hoisting enables flexible adjustment and rapid fixing of the lifting point position, effectively improving hoisting adaptability, construction efficiency, and operational safety. This structure utilizes a stable slide rail formed by a base and symmetrical L-shaped guide rail plates, a nested fit between the bottom fitting boss of the lifting point sliding seat and the guide rail, and a self-locking wedge-shaped locking mechanism achieved by an adjusting screw driving a wedge-shaped locking block. The overall structure ensures smooth sliding while possessing high shear and torsional stiffness, allowing for non-destructive installation and precise positioning without welding, making it particularly suitable for steel structure hoisting scenarios with offset centers of gravity or complex shapes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a sliding lifting point adjustment structure for steel structure hoisting according to the present invention; Figure 2 This is a schematic diagram of the external side view of the lifting point sliding seat of a sliding lifting point adjustment structure for steel structure hoisting according to this utility model; Figure 3 This is a schematic diagram of the inner side structure of an L-shaped guide rail plate with an adjustable sliding lifting point for steel structure hoisting according to this utility model.

[0013] In the diagram: 1. Base; 2. L-shaped guide rail plate; 3. Lifting point sliding seat; 4. Fitting boss; 5. Lifting through hole; 6. Wedge-shaped locking block; 7. Adjusting screw; 8. T-shaped guide groove; 9. T-shaped sliding key; 10. Guide column; 11. Annular reinforcing rib. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-3This utility model provides a technical solution: a sliding lifting point adjustment structure for steel structure hoisting, including a base 1. The bottom of the base 1 is provided with symmetrically distributed L-shaped guide rail plates 2. The base 1 is fixedly connected to the L-shaped guide rail plates 2 by welding. The vertical webs of the L-shaped guide rail plates 2 are arranged opposite each other with a gap. A lifting point sliding seat 3, which can slide along the length of the steel structure, is provided within this gap. The bottom of the lifting point sliding seat 3 is provided with a downwardly extending fitting boss 4, and the top of the lifting point sliding seat 3 is provided with a vertically penetrating lifting through hole 5. A horizontally arranged wedge-shaped locking block 6 is provided inside the lifting point sliding seat 3, and an adjusting screw 7 passes through the side wall of the lifting point sliding seat 3. This structure temporarily fixes the base 1 to the steel structure, making the symmetrically arranged L-shaped guide rail plates 2 form a stable structure. The sliding track and lifting point sliding seat 3 can slide freely along the length of the steel structure to adjust to the optimal lifting position. Once the position is determined, tighten the adjusting screw 7 to push the wedge-shaped locking block 6 to move laterally, so that its inclined surface tightly wedges into the inner side of the vertical web of the L-shaped guide plate 2. At the same time, the engagement between the fitting boss 4 and the L-shaped guide plate 2 restricts the vertical and lateral displacement of the lifting point sliding seat 3, thereby firmly locking the lifting point sliding seat 3. At this time, the lifting equipment applies lifting force through the lifting through hole 5. The entire force path is effectively transmitted to the base 1 through the lifting point sliding seat 3, the fitting boss 4, the wedge-shaped locking block 6, and the L-shaped guide plate 2, achieving uniform force distribution and reliable anchoring. This linkage mechanism allows the lifting point position to be adjusted before lifting or during trial lifting based on the actual center of gravity, posture, or on-site conditions of the component. The system allows for flexible fine-tuning and rapid locking, avoiding the risks of component tilting, localized stress concentration, or instability caused by fixed and unadjustable lifting points. It solves the problem that existing technologies with fixed lifting points cannot adapt to the lifting needs of irregularly shaped, asymmetrical, or unbalanced steel structures, significantly improving the adaptability, installation accuracy, construction efficiency, and safety of lifting operations. The L-shaped guide plate 2 has a T-shaped guide groove 8 extending along its length on the inner side of its vertical web, and triangular reinforcing ribs arranged along its entire length are located at the outer corners of the L-shaped guide plate 2. These triangular reinforcing ribs are continuously welded to the main body of the L-shaped guide plate 2. This structure, through the T-shaped guide groove 8, forms an anti-detachment and interlocking guide with the sliding components, ensuring smooth and non-tilting operation of the lifting point sliding seat 3. Simultaneously, the triangular reinforcing ribs significantly enhance the L-shaped guide plate's stability. The cross-sectional stiffness and torsional resistance of the rail plate 2 effectively suppress deformation caused by lateral forces or eccentric loads during hoisting, improving the overall structural stability and load-bearing reliability. T-shaped sliding keys 9, matching the T-shaped guide grooves 8, are provided on both sides of the mating boss 4. These T-shaped sliding keys 9 are embedded in the T-shaped guide grooves 8 to form an anti-slip fit. This structure, through the nested fit between the T-shaped sliding keys 9 and the T-shaped guide grooves 8, not only enables the smooth sliding of the lifting point sliding seat 3 along the guide rail direction but also effectively limits its vertical and lateral displacement, preventing derailment or swaying due to vibration or eccentric loads during hoisting. This ensures stable and reliable adjustment and precise positioning. The wedge-shaped locking block 6 has a trapezoidal cross-section, with its outer end facing the inner side of the vertical web of the L-shaped guide rail plate 2. Guide posts 10 are provided at both ends of the wedge-shaped locking block 6.The connection between the guide post 10 and the wedge-shaped locking block 6 is fixed by welding. The guide post 10 slides in the transverse guide hole inside the lifting point sliding seat 3. The guide post 10 and the transverse guide hole are treated with a low-friction coefficient material coating to reduce frictional resistance and ensure the smooth movement of the wedge-shaped locking block 6. This structure uses the trapezoidal cross-section wedge-shaped locking block 6 to advance laterally under the drive of the adjusting screw 7. The inclined surface and the inner side of the L-shaped guide plate 2 form a self-locking wedge clamping force. At the same time, the guide post 10 slides in the transverse guide hole to ensure that the wedge-shaped locking block 6 moves smoothly and linearly without deflection, thereby achieving reliable locking of the lifting point sliding seat 3, effectively transmitting shear force and preventing loosening. One end of the adjusting screw 7 passes through the threaded hole on the side wall of the lifting point sliding seat 3 and abuts against the spherical recess on the back of the wedge-shaped locking block 6. The other end of the adjusting screw 7 is provided with an external hexagonal head. The contact surface between the adjusting screw 7 and the spherical recess on the back of the wedge-shaped locking block 6 is... Hardening treatment increases wear resistance and contact area, ensuring uniform distribution of tightening force. This structure uses the point-to-surface contact between the adjusting screw 7 and the spherical recess on the back of the wedge-shaped locking block 6 to smoothly convert the tightening force into lateral thrust, avoiding uneven loading and jamming. Simultaneously, the external hexagonal head facilitates quick operation with conventional tools, enabling convenient single-person locking or releasing at the lifting point, improving on-site adjustment efficiency and reliability. The top of the lifting point sliding seat 3 is equipped with an annular reinforcing rib 11, and the lifting through hole 5 is located at the center of the annular reinforcing rib 11. The inner wall of the lifting through hole 5 is chamfered. The annular reinforcing rib 11 is connected to the main body of the lifting point sliding seat 3 through an integrated casting process. This structure uses the annular reinforcing rib 11 to locally strengthen the area around the lifting through hole 5, effectively dispersing concentrated stress during lifting and preventing deformation or cracking around the hole. At the same time, the chamfer on the inner wall of the lifting through hole 5 reduces wear on the wire rope or shackle, improving connection safety and structural durability.

[0016] Working principle: When using this sliding lifting point adjustment structure for steel structure hoisting, firstly, the base 1 is temporarily fixed to the steel structure, so that the L-shaped guide rail plates 2 on both sides are symmetrically arranged and form a gap. Then, the lifting point sliding seat 3 is inserted into the gap from the end, so that the T-shaped sliding keys 9 on both sides of the bottom fitting boss 4 are embedded in the T-shaped guide groove 8 on the inner side of the L-shaped guide rail plate 2. Next, the lifting point sliding seat 3 is slid along the length of the L-shaped guide rail plate 2 to the required hoisting position. Then, the outer hexagonal head of the adjusting screw 7 is rotated by the wrench, so that the adjusting screw 7 is screwed into the threaded hole on the side wall of the lifting point sliding seat 3, and pushes the wedge locking block 6 to move along the transverse guide hole until the outer end face of the wedge locking block 6 presses against the inner side of the vertical web of the L-shaped guide rail plate 2. At this time, the lifting point sliding seat 3 is locked in the current position. Finally, the hook or shackle of the hoisting equipment is passed through the hoisting through hole 5, and the hoisting operation can be carried out, thus completing a series of tasks.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sliding lifting point adjustment structure for steel structure hoisting, comprising a base (1), characterized in that: The base (1) has symmetrically distributed L-shaped guide rail plates (2) at its bottom. The vertical webs of the L-shaped guide rail plates (2) are arranged opposite each other with a gap. A lifting point sliding seat (3) that can slide along the length of the steel structure is provided in the gap. The bottom of the lifting point sliding seat (3) has a downwardly extending fitting boss (4), and the top of the lifting point sliding seat (3) has a vertically penetrating lifting through hole (5). Both sides of the inside of the lifting point sliding seat (3) are provided with horizontally arranged wedge-shaped locking blocks (6), and an adjusting screw (7) is provided on the side wall of the lifting point sliding seat (3).

2. The adjustable sliding lifting point structure for steel structure hoisting according to claim 1, characterized in that: The L-shaped guide plate (2) has a T-shaped guide groove (8) extending along the length direction on the inner side of the vertical web, and a triangular reinforcing rib arranged along the entire length is provided at the outer corner of the L-shaped guide plate (2).

3. The adjustable sliding lifting point structure for steel structure hoisting according to claim 2, characterized in that: The mating boss (4) has T-shaped sliding keys (9) on both sides that match the T-shaped guide groove (8), and the T-shaped sliding keys (9) are embedded in the T-shaped guide groove (8) to form an anti-disengagement sliding fit.

4. The adjustable sliding lifting point structure for steel structure hoisting according to claim 1, characterized in that: The wedge-shaped locking block (6) has a trapezoidal cross section, with its outer end face facing the inner side of the vertical web of the L-shaped guide plate (2), and the wedge-shaped locking block (6) has guide posts (10) at both ends, and the guide posts (10) are slidably fitted in the transverse guide hole inside the lifting point sliding seat (3).

5. The adjustable sliding lifting point structure for steel structure hoisting according to claim 1, characterized in that: One end of the adjusting screw (7) passes through the threaded hole on the side wall of the lifting point sliding seat (3) and abuts against the spherical recess on the back of the wedge locking block (6), and the other end of the adjusting screw (7) is provided with an external hexagonal head.

6. The adjustable sliding lifting point structure for steel structure hoisting according to claim 1, characterized in that: The top of the lifting point sliding seat (3) is provided with an annular reinforcing rib (11), and the lifting through hole (5) is located at the center of the annular reinforcing rib (11), and the inner wall of the lifting through hole (5) is provided with a chamfer.

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