A lifting lug device suitable for vertical lifting and vertical splicing of steel structure frame units

Abstract

The utility model discloses a kind of lifting lug devices suitable for vertical hoisting vertical splicing of steel structure frame unit unit, including connecting plate and with the vertical fixed connection of connecting plate, two lifting lug plates of face-to-face setting, two lifting lug plates are respectively left and right center, symmetrically set in the web of H-shaped steel column two sides, the gap between two lifting lug plates is adapted to the web thickness of H-shaped steel column, lifting hole is equipped in the middle of lifting lug plate.The utility model adopts double lifting lug design, can improve the hoisting capacity for column, can better ensure the strength of lifting lug plate;When column is connected, two lifting lug plates are used for auxiliary installation positioning, ensure that column is well aligned (ensure the concentricity and perpendicularity of column installation), improve the installation accuracy of column, improve the load-bearing capacity and stability of hoisting;And make lifting lug device only bear vertical force, force is reasonable, keep the balance of column when hoisting column, improve the overall mechanical properties and structural stability after column installation.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting technology, and in particular to a lifting lug device suitable for vertical hoisting and vertical splicing of steel structure frame units. Background Technology

[0002] Lifting lugs are load-bearing components installed on H-beam columns or other building structures for lifting. They are important connecting parts used in the lifting of H-beam columns and other building structures. Among the many H-beam column accessories, lifting lugs are the main lifting point structure and are indispensable components in lifting and transport operations. Therefore, high requirements are placed on the load-bearing capacity and stability of lifting lugs.

[0003] The trend towards large-scale and integrated petrochemical engineering projects is evident. To overcome the challenges of short project timelines, heavy workloads, and increasingly stringent safety, quality, and environmental standards, traditional engineering construction organization models have revealed numerous constraints, making modular construction a new development trend. Modular construction typically involves rationally dividing the entire plant's pipe corridors and unit pipe corridors along their axial direction into several steel structure frame units. Each frame unit has multiple H-shaped steel columns arranged horizontally and vertically, with a grid structure in plan view, containing multiple rectangular frames, and the nodes are occupied by the aforementioned H-shaped steel columns. During the vertical hoisting and splicing of the frame units, the H-shaped steel columns of the frame units usually use a single lifting lug, located on the connecting plate at the top of the column. This lug needs to be removed after the frame unit is hoisted, which is time-consuming and labor-intensive. Furthermore, due to the large planar dimensions of the frame units, there are often centering deviations and misalignments between adjacent splicing units. On the one hand, this fails to meet the verticality requirements of the construction standards and specifications. On the other hand, it is impossible to achieve the balance of the overall structural center of gravity of the steel structure relative to the geometric center during hoisting, which leads to tilting and overturning during hoisting and affects the overall structural performance of the steel structure. Utility Model Content

[0004] This utility model provides a lifting lug device for vertical hoisting and splicing of steel structure frame units to solve the technical problems existing in the prior art. The lifting lug device does not need to be removed later and can assist in the hoisting and positioning of the upper steel structure frame unit, so that the columns of the adjacent splicing units are concentric and vertical.

[0005] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is: a lifting lug device applicable to the vertical hoisting and vertical splicing of steel structure frame units. The steel structure frame unit is provided with multiple H-shaped steel columns arranged in rows and columns, and the plane is a grid structure with multiple rectangular frames. The nodes are the H-shaped steel columns. The top of the H-shaped steel columns is provided with a connecting plate. The lifting lug device includes the connecting plate and two lifting lug plates that are perpendicularly fixed to the connecting plate and arranged face to face. The two lifting lug plates are respectively centered on the left and right and symmetrically arranged on both sides of the web of the H-shaped steel column. The gap between the two lifting lug plates is adapted to the thickness of the web of the H-shaped steel column. A hoisting hole is provided in the middle of the lifting lug plate.

[0006] Based on the above solution, the present invention has made the following improvements:

[0007] At least two stiffening ribs I are provided on the back of the lifting lug plate, and the stiffening ribs I are welded to the lifting lug plate and the connecting plate respectively; at least two stiffening ribs II are provided on the bottom of the connecting plate, and the stiffening ribs II are welded to the connecting plate and the web plate of the H-shaped steel column respectively.

[0008] The stiffening ribs I and II are of the same number, evenly arranged, aligned one-to-one with each other, and equally divide the space between the two flanges of the H-shaped steel column.

[0009] The stiffening rib I and the stiffening rib II have the same dimensions. Their height along the direction perpendicular to the web is less than the depth of the web and greater than or equal to half the lateral width of the lug plate. Their length along the vertical direction is greater than the length of the lug plate joined to the connecting plate.

[0010] The connecting plate is connected to the top of the main body of the H-shaped steel column by a bevel weld.

[0011] The thickness of the connecting plate is the same as the thickness of the web of the H-beam steel column.

[0012] The distance between the left and right sides of the lifting lug plate and the flange of the H-shaped steel column is less than half the lateral width of the lifting lug plate.

[0013] The thickness of the lug plate is greater than half the web thickness of the H-beam steel column and less than or equal to the web thickness of the H-beam steel column.

[0014] The distance between the edge of the lifting hole and the stiffening rib I is greater than or equal to the diameter of the lifting hole.

[0015] The advantages and positive effects of this utility model are as follows: The double-lug design not only improves the lifting capacity of H-beam columns but also better ensures the strength of the lug plates. When connecting the upper and lower H-beam columns, the two lug plates assist in installation and positioning, ensuring good alignment between the upper and lower H-beam columns, improving installation accuracy, and enhancing the load-bearing capacity and stability of the lifting. Furthermore, the lug device only bears vertical force, resulting in reasonable stress distribution and maintaining the balance of the H-beam columns during lifting, thus improving the overall mechanical properties and structural stability of the installed H-beam columns. This utility model has a simple and reasonable structure, strong overall integrity, high applicability, and broad application prospects. Attached Figure Description

[0016] Figure 1 This is an elevation view of a lifting lug device applicable to the vertical hoisting and vertical splicing of steel structure frame units according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 1-1 sectional view.

[0018] The markings in the attached figure are as follows:

[0019] 1. Web plate, 2. H-beam column, 3. Lifting lug plate, 4. Lifting hole, 5. Connecting plate, 6. Stiffening rib I, 7. Stiffening rib II. Detailed Implementation

[0020] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings:

[0021] Please see Figure 1 and Figure 2 A lifting lug device applicable to the vertical hoisting and vertical splicing of steel structure frame units, wherein the steel structure frame unit is provided with multiple H-shaped steel columns arranged in rows and columns, the plan is a grid structure with multiple rectangular frames, the nodes are the H-shaped steel columns, and the top of the H-shaped steel columns is provided with connecting plates 5.

[0022] The lifting lug device includes the connecting plate 5 and two lifting lug plates 3, which are perpendicularly fixed to the connecting plate 5 and arranged face-to-face. The two lifting lug plates 3 are respectively centered on the left and right and symmetrically arranged on both sides of the web of the H-shaped steel column 2. The gap between the two lifting lug plates 3 is adapted to the thickness of the web of the H-shaped steel column and is used for positioning the web 1 of the upper steel structure frame unit H-shaped steel column. The two lifting lug plates, arranged in pairs and symmetrically on both sides of the web of the H-shaped steel column, can improve the lifting capacity and better ensure the strength of the lifting lug plates. Furthermore, when splicing the upper H-shaped steel column with the lower H-shaped steel column, the two lifting lug plates can assist in the installation and positioning of the two H-shaped steel columns, ensuring that the two H-shaped steel columns are concentric and vertical, and improving the installation accuracy.

[0023] A lifting hole 4 is provided in the middle of the lifting lug plate 3. The horizontally open lifting hole facilitates the vertical lifting of the H-shaped steel column, so that the lifting lug plate only bears the vertical force, and the force distribution is reasonable. The lifting hole is located in the vertical center position of the H-shaped steel column and the lifting lug plate, which helps to maintain balance when lifting the H-shaped steel column and prevents problems such as tilting or overturning.

[0024] The more preferred solution in this embodiment is as follows:

[0025] At least two stiffening ribs I6 are provided on the back of the lifting lug plate 3, and the stiffening ribs I6 are welded to the lifting lug plate 3 and the connecting plate 5 respectively. At least two stiffening ribs II7 are provided below the connecting plate 5, and the stiffening ribs II7 are welded to the connecting plate 5 and the web plate of the H-shaped steel column 2 respectively. The lifting lug plate and the connecting plate are reinforced with stiffening ribs to ensure the strength, rigidity and structural stability of the lifting lug plate during hoisting operations. In addition, the stiffening ribs strengthen the connection between the upper and lower H-shaped steel columns, making the stress on the connection node more reasonable.

[0026] The stiffening ribs I6 and II7 are of the same number, evenly arranged, and aligned one-to-one vertically, equally dividing the space between the two flanges of the H-beam column 2. The spacing between the stiffening ribs and the flanges of the H-beam column is equal; that is, if there are two stiffening ribs, the space between the two flanges of the H-beam column is divided into three equal parts; if there are three stiffening ribs, the space between the two flanges of the H-beam column is divided into four equal parts. This load-balanced structural design ensures that the center of gravity of the connection structure between the lifting lugs and the H-beam column is located on the vertical centerline, guaranteeing that the H-beam column only bears vertical forces during hoisting, making the stress distribution on the H-beam column more reasonable.

[0027] The stiffening ribs I6 and II7 are identical in size. Their height along the direction perpendicular to the web is less than the depth of the web and greater than or equal to half the transverse width of the lug plate 3. Their length along the vertical direction is greater than the length at which the lug plate 3 joins with the connecting plate 5. The height of the stiffening rib is less than the depth of the web, thus not affecting the overall shape of the H-beam column. This facilitates standardized storage and transportation of the H-beam column. When connecting upper and lower H-beam columns, the lug plate can be used to connect the upper and lower webs, eliminating the need for lug plate cutting and simplifying on-site construction. The length of the stiffening rib exceeds the joint length between the lug plate and the connecting plate, ensuring high structural rigidity during hoisting. If the height of the stiffening rib is too small compared to the lateral width of the lifting lug plate, for example, if the height of the stiffening rib is only 1 / 3 of the lateral width of the lifting lug plate, the supporting performance of the stiffening rib will be insufficient, and its effect in eliminating stress concentration will be small, thus failing to effectively enhance the structural strength of the lifting lug plate. Therefore, this utility model designs the height of the stiffening rib to be no less than half of the lateral width of the lifting lug plate, ensuring that the stiffening rib has a high stress concentration relief performance and improving the structural rigidity of the lifting lug plate during hoisting.

[0028] The connecting plate 5 is connected to the top of the main body of the H-beam column 2 using a bevel weld. Using a bevel weld ensures welding quality and improves the reliability of the connection between the connecting plate and the H-beam column.

[0029] The thickness of the connecting plate 5 is the same as the web thickness of the H-beam steel column 2. The thickness of the connecting plate cannot be too small or too large compared to the thickness of the H-beam steel column. If the thickness of the connecting plate is too small, the connecting plate will lack strength and is prone to deformation or even breakage. If the thickness of the connecting plate is too large, it will easily cause spiky deformation or cracks during welding, leading to a decrease in joint quality or even joint failure. Therefore, this invention designs the thickness of the connecting plate to be the same as the web thickness of the H-beam steel column, which ensures that the connecting plate has high load-bearing capacity, facilitates welding, guarantees welding quality, and improves connection reliability.

[0030] The distance between the left and right sides of the lifting lug 3 and the flange of the H-beam steel column 2 is less than half the lateral width of the lifting lug 3. If the lateral edge of the lifting lug is too far from the flange of the H-beam steel column, the connection strength between the lifting lug and the connecting plate will be reduced, and the lifting lug may easily deform during the hoisting process. In severe cases, the lifting lug may even fall off, causing safety accidents.

[0031] The thickness of the lifting lug plate 3 is greater than half the web thickness of the H-beam steel column 2 and less than or equal to the web thickness of the H-beam steel column 2. The thickness of the lifting lug plate cannot be too small or too large compared to the web thickness of the H-beam steel column. If the thickness of the lifting lug plate is too small compared to the web thickness of the H-beam steel column, the structural strength of the lifting lug plate will be insufficient, making it prone to cracking and detachment. If the thickness of the lifting lug plate is too large compared to the web thickness of the H-beam steel column, deformation or cracks will occur during welding, leading to a decrease in weld quality. Therefore, this utility model designs the thickness of the lifting lug plate as follows: half the web thickness of the H-beam steel column < the thickness of the lifting lug plate ≤ the web thickness of the H-beam steel column. This ensures that the lifting lug plate has high load-bearing capacity, facilitates improved welding performance, and enhances the structural strength and rigidity of the lifting lug plate during hoisting.

[0032] The distance between the edge of the lifting hole 4 and the stiffening rib I6 is greater than or equal to the diameter of the lifting hole 4. If the distance between the lifting hole and the stiffening rib is too close, a narrow and deep space for threading the rope will be formed between the lifting hole and two adjacent stiffening ribs, which will cause considerable difficulty in threading the lifting rope. Sufficiently wide space should be left between the lifting hole and the stiffening rib to facilitate the threading of the lifting rope.

[0033] The lifting lug device for vertical hoisting and splicing of steel frame units provided in this embodiment has a simple and reasonable structure with strong overall integrity. It adopts a double lifting lug plate design, which not only improves the hoisting capacity of the steel frame units but also better ensures the strength of the lifting lug plates. When connecting the upper and lower steel frame units, the two lifting lug plates assist in installation and positioning, ensuring that the columns of the upper and lower steel frame units are concentric and vertical, improving the installation accuracy of the steel frame units, and enhancing the load-bearing capacity and stability of the hoisting. Furthermore, the lifting lug device only bears vertical forces, resulting in reasonable force distribution and maintaining the balance of the steel frame units during hoisting, thus improving the overall mechanical performance and structural stability of the steel frame units after installation.

[0034] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting lug device applicable to the vertical hoisting and splicing of steel structure frame units, wherein the steel structure frame unit is provided with multiple H-shaped steel columns arranged in rows and columns, the plan is a grid structure with multiple rectangular frames, the nodes are the H-shaped steel columns, and the top of the H-shaped steel columns is provided with connecting plates. Its features are, The lifting lug device includes the connecting plate and two lifting lug plates that are perpendicularly fixed to the connecting plate and arranged face to face. The two lifting lug plates are respectively centered on the left and right and symmetrically arranged on both sides of the web of the H-shaped steel column. The gap between the two lifting lug plates is adapted to the thickness of the web of the H-shaped steel column. A lifting hole is provided in the middle of the lifting lug plate.

2. The lifting lug device for vertical hoisting and splicing of steel structure frame units according to claim 1, characterized in that, At least two stiffening ribs I are provided on the back of the lifting lug plate, and the stiffening ribs I are welded to the lifting lug plate and the connecting plate respectively; at least two stiffening ribs II are provided on the bottom of the connecting plate, and the stiffening ribs II are welded to the connecting plate and the web plate of the H-shaped steel column respectively.

3. The lifting lug device for vertical hoisting and splicing of steel structure frame units according to claim 2, characterized in that, The stiffening ribs I and II are of the same number, evenly arranged, aligned one-to-one with each other, and equally divide the space between the two flanges of the H-shaped steel column.

4. The lifting lug device for vertical hoisting and vertical splicing of steel structure frame units according to claim 3, characterized in that, The stiffening rib I and the stiffening rib II have the same dimensions. Their height along the direction perpendicular to the web is less than the depth of the web and greater than or equal to half the transverse width of the lug plate. Their length along the vertical direction is greater than the length of the lug plate joined to the connecting plate.

5. The lifting lug device for vertical hoisting and splicing of steel structure frame units according to claim 1, characterized in that, The connecting plate is connected to the top of the main body of the H-shaped steel column by a bevel weld.

6. The lifting lug device for vertical hoisting and vertical splicing of steel structure frame units according to claim 1, characterized in that, The thickness of the connecting plate is the same as the thickness of the web of the H-beam steel column.

7. The lifting lug device for vertical hoisting and splicing of steel structure frame units according to claim 1, characterized in that, The distance between the left and right sides of the lifting lug plate and the flange of the H-shaped steel column is less than half the lateral width of the lifting lug plate.

8. The lifting lug device for vertical hoisting and splicing of steel structure frame units according to claim 1, characterized in that, The thickness of the lifting lug plate is greater than half the web thickness of the H-beam steel column and less than or equal to the web thickness of the H-beam steel column.

9. The lifting lug device for vertical hoisting and vertical splicing of steel structure frame units according to claim 2, characterized in that, The distance between the edge of the lifting hole and the stiffening rib I is greater than or equal to the diameter of the lifting hole.

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