Plug-in clamp type earless lifting device

Abstract

The utility model discloses a kind of plug-in clamp type free ear lifting appliance, including the reserved hole (1) on main body load-bearing structure and adaptive lifting plate (3);The lower part of adaptive lifting plate is the section of insertion that can pass through the reserved hole, and the upper part is the load-bearing section with width greater than the size of the reserved hole;At least one lifting appliance hole (4) for connecting hoisting rope is set on the load-bearing section;The section of insertion end of adaptive lifting plate is equipped with guide bevel or round corner.The utility model is simple in structure, avoid welding and high-altitude cutting off ear when hoisting steel structure component, fire operation, safe and efficient, improve work efficiency;Hoist using component itself structure, strong adaptability, can be repeatedly used.

Description

Technical Field

[0001] This utility model relates to the field of steel structure hoisting construction technology, specifically to a plug-type hoisting tool that eliminates the need for lifting lugs, which is particularly suitable for steel structure hoisting construction in special environments with high risks of hot work operations. Background Technology

[0002] In traditional steel structure construction, hoisting operations rely on lifting lugs welded to the main load-bearing structure (components). This method has the following drawbacks: 1. Welding and removing lifting lugs involve open flame work, posing a high fire hazard in poorly ventilated environments such as mountainous areas and forests where flammable materials are abundant; 2. Welding and subsequent high-altitude dismantling procedures are cumbersome and inefficient, and dismantling itself involves working at height, posing safety risks; 3. Welding fumes pollute the environment and damage the main load-bearing structure. Furthermore, traditional lifting lugs have poor adaptability and are difficult to flexibly handle components of different sizes and shapes. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a plug-type lifting lug-free lifting tool that is simple in structure, avoids hot work operations when welding on the main load-bearing structure and cutting the lifting lugs at high altitude, is safe and efficient, highly adaptable, and can achieve lifting by utilizing the structure of the main load-bearing structure itself.

[0004] The technical solution adopted by this utility model is as follows: A clamp-type lifting lug without lifting lug includes a pre-drilled hole in the main load-bearing structure and an adapter lifting plate; the lower part of the adapter lifting plate is an extension section that can pass through the pre-drilled hole, and the upper part is a load-bearing section with a width greater than the size of the pre-drilled hole; the load-bearing section has at least one lifting lug hole for connecting lifting ropes; the end of the extension section of the adapter lifting plate is provided with a guide slope or rounded corner.

[0005] Furthermore, the number of holes in the lifting device is multiple, and their arrangement can be a single row or a double row.

[0006] Furthermore, the single-row arrangement includes a single-row single-hole arrangement, a single-row double-hole arrangement, a single-row triple-hole arrangement, or a single-row quadruple-hole arrangement.

[0007] Furthermore, the double-row arrangement can be a parallel arrangement of two rows of four holes or a staggered arrangement of two rows of four holes.

[0008] Furthermore, the lifting device has three holes, two of which are located on the same horizontal line, and the third hole is located above or below the horizontal line, which is used to adjust the angle of the wire rope when lifting the inclined column component.

[0009] Furthermore, the main load-bearing structure is a circular tube column, a box column, or a cross-shaped steel column.

[0010] Furthermore, the lifting device plate is a plate-like structure on the top of the main load-bearing structure, including the diaphragm, sealing plate, and stiffening plate.

[0011] The beneficial effects of this utility model are: This utility model has a simple structure and eliminates the need to weld lifting lugs to the main load-bearing structure of the steel structure, thus avoiding hot work operations such as welding and high-altitude cutting of lifting lugs, eliminating hot work safety hazards, and producing no smoke or dust pollution. It is particularly suitable for steel structure hoisting operations in special environments such as forests and mountainous areas with poor ventilation and high concentrations of flammable materials. The installation and removal of the lifting tool involves directly inserting the appropriate lifting plate, using the self-weight of the main load-bearing structure of the steel structure to achieve a tight fit, and then removing it directly after hoisting, saving labor and time and improving hoisting efficiency. The lifting tool can also be quickly fabricated on-site according to various existing holes in the main load-bearing structure of the steel structure, making it highly versatile. The lifting tool can be reused. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a structure adapted to the hanging platform of this utility model; Figure 2 This is a schematic diagram of another structure of the hanging platform adapted to this utility model; Figure 3 This is another structural schematic diagram of the hanging platform adapted to this utility model; Figure 4 This is a schematic diagram of the hoisting of cylindrical or box-shaped column components according to the present invention; Figure 5 for Figure 4 Top view of the hoisting of the circular tubular column component; Figure 6 This is a schematic diagram of the hoisting of the inclined column-shaped component of this utility model; Figure 7 This is a schematic diagram showing the insertion of the adapter lifting plate into the reserved hole during the hoisting operation of this utility model; Figure 8 for Figure 7 A schematic diagram showing the middle-mounted lifting platform rotating to extend from the pre-drilled hole in preparation for hoisting. Detailed Implementation

[0013] like Figures 1 to 3As shown, a clamp-type lifting lug-free lifting device includes a pre-reserved hole 1 on the main load-bearing structure and an adapter lifting plate 3; the lower part of the adapter lifting plate is an extension section that can pass through the pre-reserved hole, and the upper part is a load-bearing section with a width greater than the size of the pre-reserved hole; at least one lifting device fitting hole 4 for connecting lifting ropes is provided on the load-bearing section; the end of the extension section of the adapter lifting plate is provided with a guide slope or rounded corner. The lifting device of this utility model can lift main load-bearing structures such as round pipe columns, box columns, or cross-shaped steel columns. Utilizing the pre-reserved holes in the main load-bearing structure and the plate-like structures 2 on its top diaphragms, sealing plates, and stiffening plates, it eliminates the need to weld lifting lugs onto the main load-bearing steel structure, avoiding hot work operations such as welding and high-altitude cutting of lifting lugs, eliminating hot work safety hazards, and producing no smoke or dust pollution. It is particularly suitable for lifting operations of steel structures in special environments such as forests and mountainous areas with poor ventilation and high concentrations of flammable materials. The installation and removal of the lifting device involves directly inserting the matching lifting plate, using the self-weight of the main load-bearing steel structure to achieve a tight fit, and then directly removing it after lifting, saving labor and time and improving lifting efficiency.

[0014] Depending on whether the lifting component is a cylindrical, box-shaped, or inclined component, the lifting device of this utility model has multiple holes, which can be arranged in a single row or a double row. The single row arrangement can be configured as a single row with one hole, a single row with two holes, a single row with three holes, or a single row with four holes. The double row arrangement can also be a parallel arrangement of four holes in two rows or a staggered arrangement of four holes in two rows. Alternatively, the lifting device can have three holes, with two holes located on the same horizontal line and the third hole located above or below the horizontal line. For large components, two or more of this utility model can be used to lift them together.

[0015] like Figure 4 and Figure 5 As shown, the plug-type lifting lug of this utility model includes an adapter lifting plate 3 for use in the main load-bearing structure A (a circular column in this example). A suitably sized hole 1 is pre-drilled in the lifting clamp plate 2 at the top of the circular column (in this example, the end cap plate at the top of the circular tube column). Before construction, a suitable steel plate is selected as the blank for the adapter lifting plate 3. The adapter lifting plate 3 is fabricated according to the hole size, with the width of its lower extension section being smaller than the hole size, and the width of its upper load-bearing section being larger than the hole size. Subsequently, the required lifting lug holes 4 are drilled on the load-bearing section according to the load being lifted; in this example, a double-hole arrangement is used.

[0016] like Figure 6As shown, the clamp-type lifting lug of this embodiment includes an adapter lifting plate 3 for the main load-bearing structure (in this example, a sloping column component). A suitably sized hole 1 is pre-drilled in the lifting lug plate 2 at the top of the sloping column component (in this example, the end cap plate at the top of the sloping column component). Before construction, a suitable steel plate is selected as the blank for the adapter lifting plate 3. The adapter lifting plate 3 is fabricated according to the hole size, with the width of its lower extension section being smaller than the hole size, and the width of its upper load-bearing section being larger than the hole size. Subsequently, the required lifting lug holes 4 are drilled on the load-bearing section according to the load being lifted; in this example, a three-hole arrangement is used.

[0017] The operation process of this utility model: During hoisting, as follows: Figure 7 and Figure 8 As shown, the extension section of the adapter plate is inserted into the hole of the spreader plate; the lifting rope (such as a wire rope) is passed through the hole of the spreader and hung on the crane hook, and the crane is slowly lifted. Under the weight of the main load-bearing structure, the load-bearing section of the adapter plate will automatically rise and tightly fit against the lower surface of the spreader plate, and the contact surfaces will be completely pressed together, allowing for safe lifting; after the main load-bearing structure is in place and fixed, the hook is slightly loosened, and the adapter plate can be horizontally pulled out of the hole, completing one lifting operation. This utility model can be reused repeatedly.

[0018] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A plug-type lifting lug-free device, characterized in that: It includes a reserved hole (1) on the main load-bearing structure and an adapter hanging plate (3); the lower part of the adapter hanging plate is an extension section that can pass through the reserved hole, and the upper part is a load-bearing section with a width greater than the size of the reserved hole; at least one lifting tool fitting hole (4) for connecting the lifting rope is provided on the load-bearing section; the end of the extension section of the adapter hanging plate is provided with a guide slope or rounded corner.

2. A hanger according to claim 1, wherein: The lifting device has multiple holes, which can be arranged in a single row or a double row.

3. A plug-type lifting lug-free device according to claim 2, characterized in that: The single-row arrangement includes a single-row single-hole arrangement, a single-row double-hole arrangement, a single-row triple-hole arrangement, or a single-row quadruple-hole arrangement.

4. A plug-type lifting lug-free device according to claim 2, characterized in that: The double-row arrangement can be either a parallel arrangement of two rows of four holes or a staggered arrangement of two rows of four holes.

5. A plug-type lifting lug-free device according to claim 1, characterized in that: The lifting device has three holes, with two holes located on the same horizontal line and the third hole located above or below that horizontal line.

6. A plug-type lifting lug-free device according to any one of claims 1 to 5, characterized in that: The main load-bearing structure is a circular tube column, a box column, or a cross-shaped steel column.

7. A plug-type lifting lug-free device according to claim 6, characterized in that: The lifting clamp plate (2) is a plate-like structure on the top of the main load-bearing structure, including the diaphragm, sealing plate, and stiffening plate.

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