Fabricated lug plate for steel column

Abstract

The utility model relates to an assembly type lug plate for a steel column, which is used for connecting an upper steel column and a lower steel column, the assembly type lug plate comprises an even number of fixed plates, every two fixed plates form a first plate group, one fixed plate in any first plate group is fixed on the upper steel column, the other fixed plate is fixed on the lower steel column, and the fixed plates are fixed on the upper steel column and the lower steel column. The two fixing plates in the first plate group are positioned in the same plane; the number of the connecting plates is two times that of the fixing plates, every four connecting plates form a second plate set, the four connecting plates in any second plate set are connected with the two fixing plates of the same first plate set respectively, the two connecting plates in the second plate set are located on the outer side of the first plate set, and the other two connecting plates in the second plate set are located on the inner side of the first plate set. The projection areas of the two connecting plates located on the same side on the plane where the first fixing plate is located are located on the two sides of the projection areas of the corresponding upper steel columns and lower steel columns on the plane where the first fixing plate is located. Compared with the prior art, the utility model has the advantages that the working procedure of cutting the lug plate is reduced, the construction progress can be accelerated, and the like.

Description

Technical Field

[0001] This utility model relates to the field of steel structure buildings, and in particular to a prefabricated ear plate for steel columns. Background Technology

[0002] With the continuous evolution of modern construction technology, steel structures are increasingly widely used in high-rise buildings, industrial plants, and large public facilities. As a key component of steel structures, the efficiency of steel column transportation, hoisting, and installation directly affects the progress of the entire project. In existing technologies, the hoisting and temporary fixing of steel columns before welding are accomplished by pre-welded ear plates to the outer surface of the steel columns. However, this traditional method has significant shortcomings. Ear plates occupy a considerable amount of space during transportation, resulting in low loading rates and increased logistics costs. Furthermore, after welding multiple layers of steel columns, the ear plates need to be removed, a process that not only takes up time but also consumes a significant amount of labor, further impacting the economic efficiency of the construction.

[0003] For example, Chinese patent CN219808488U discloses a detachable steel structure ear plate, including: two sets of fixing components, respectively sleeved on the outside of the upper steel column and the lower steel column, including four connecting plates that are detachably connected end to end; ear plate assembly, including a movable ear plate and two fixed ear plates, the two fixed ear plates are respectively fixed on the two sets of fixing components, and the movable ear plate is detachably connected to the two fixed ear plates by bolts.

[0004] In this existing technology, two sets of fixing components are fixed to the outside of the upper or lower steel column by friction. The upper and lower fixing components are locked together by movable and fixed lugs to complete the docking and installation of the two steel column sections. However, in practical applications, because the fixing components do not have a rigid connection to the steel column, the upper steel column cannot be unhooked before welding is completed, affecting the utilization rate of the lifting machinery and thus the economic efficiency of the construction. Furthermore, after the movable and fixed lugs are locked, the verticality of the upper steel column cannot be adjusted using jacks or other equipment, thus affecting the applicability of the device. Moreover, multi-layer steel column connection and installation operations are usually high-altitude operations with small working platforms, which is not conducive to the installation and operation of the device. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated ear plate for steel columns. By using a prefabricated fixing plate, the ear plate is avoided from being directly welded to the steel column components, which improves the transportation loading rate and reduces the cutting process of the ear plate. The fixing plate installed on the upper and lower steel column components is locked by the connecting plate, which improves the safety of the temporary constraint before welding of the upper and lower steel column components. At the same time, this device has fewer structural components, is easy to install and disassemble, and can be reused.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A prefabricated lug plate for steel columns, used to connect upper and lower steel columns, the prefabricated lug plate comprising:

[0008] There are an even number of fixing plates. Every two fixing plates form a first plate group. In any first plate group, one fixing plate is fixed to the upper steel column and the other fixing plate is fixed to the lower steel column. The two fixing plates in the first plate group are located in the same plane.

[0009] The number of connecting plates is twice that of the fixed plates. Every four connecting plates form a second plate group. In any second plate group, the four connecting plates are connected to two fixed plates of the same first plate group. Two connecting plates in the second plate group are located on the outside of the first plate group, and the other two connecting plates are located on the inside of the first plate group. The projection areas of the two connecting plates on the same side on the plane of the first fixed plate are located on both sides of the projection areas of the corresponding upper and lower steel columns on the plane of the first fixed plate. The first fixed plate is the fixed plate connected to the connecting plates. The corresponding upper and lower steel columns are the upper and lower steel columns connected by the two fixed plates. The inside of the first plate group is the side of the first plate group facing the upper and lower steel columns, and the outside of the first plate group is the side of the first plate group facing away from the upper and lower steel columns.

[0010] The fixing plate is provided with:

[0011] Fixing lugs are used for fixing and connecting to the upper or lower steel column by bolts;

[0012] Lifting lugs are used to connect to lifting equipment during hoisting operations;

[0013] Mounting lugs are used for fixing the connecting plate with bolts.

[0014] The connecting plate is provided with connecting holes corresponding to the mounting ear holes.

[0015] The fixing plate has multiple fixing ears, lifting ears, and mounting ears, and all fixing ears, lifting ears, and mounting ears on the fixing plate are symmetrically arranged relative to the first center line of the fixing plate, wherein the first center line is parallel to the axis of the lower steel column.

[0016] The number of connection holes on the fixing plate is the sum of the number of lifting lug holes and the number of mounting lug holes.

[0017] Both the fixing plate and the connecting plate are rectangular in shape.

[0018] The aspect ratio of the connecting plate is greater than that of the fixing plate.

[0019] The fixing holes on the fixing plate are arranged along the length of the upper or lower steel column.

[0020] The diameter of the lifting lug hole is larger than the diameter of the mounting lug hole.

[0021] The upper and lower steel columns are H-shaped or cross-shaped steel columns.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By using prefabricated fixing plates, the ear plates are avoided from being directly welded to the steel column components, which improves the transportation loading rate and reduces the cutting process of the ear plates. The fixing plates installed on the upper and lower steel column components are locked by connecting plates, which improves the safety of temporary constraints on the upper and lower steel column components before welding. At the same time, this device has fewer structural components, is easy to install and disassemble, and can be reused.

[0024] 2. The diameter of the lifting lug hole is larger than that of the installation lug hole, which facilitates the passage of the lifting steel cable and the adjustment of the verticality after temporary fixation. Attached Figure Description

[0025] Figure 1 This is an exploded structural diagram of the present invention in its application state;

[0026] Figure 2 This is a structural diagram of the fixing plate and the connecting plate;

[0027] Figure 3 This is a structural diagram of the present invention in its application state;

[0028] Among them: 1. Upper steel column, 2. Lower steel column, 3. Fixing plate, 4. Connecting plate, 3-1. Fixing lug hole, 3-2. Lifting lug hole, 3-3. Mounting lug hole, 4-1. Connecting hole. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "proximal end," "farthest end," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] A type of prefabricated ear plate for steel columns, such as Figure 1 and Figure 3 As shown, the prefabricated ear plate used to connect the upper steel column 1 and the lower steel column 2 includes:

[0036] There are an even number of fixing plates 3. Every two fixing plates 3 form a first plate group. In any first plate group, one fixing plate 3 is fixed to the upper steel column 1 and the other fixing plate 3 is fixed to the lower steel column 2. The two fixing plates 3 in the first plate group are located in the same plane.

[0037] The number of connecting plates 4 is twice that of the fixed plates 3. Every four connecting plates 4 form a second plate group. In any second plate group, the four connecting plates 4 are respectively connected to the two fixed plates 3 of the same first plate group. The two connecting plates 4 in the second plate group are located on the outside of the first plate group, and the other two connecting plates 4 are located on the inside of the first plate group. The projection areas of the two connecting plates 4 on the same side on the plane where the first fixed plate 3 is located are on both sides of the projection areas of the corresponding upper steel column 1 and lower steel column 2 on the plane where the first fixed plate 3 is located. The first fixed plate 3 is the fixed plate 3 connected to the connecting plates 4. The corresponding upper steel column 1 and lower steel column 2 are the upper steel column 1 and lower steel column 2 connected to the two fixed plates 3. The inside of the first plate group is the side of the first plate group facing the upper steel column 1 and lower steel column 2, and the outside of the first plate group is the side of the first plate group facing away from the upper steel column 1 and lower steel column 2.

[0038] By using prefabricated fixing plates 3, the ear plates are avoided from being directly welded to the steel column components, which improves the transportation loading rate and reduces the cutting process of the ear plates. The fixing plates 3 installed on the upper and lower steel column components are locked by connecting plates 4, which improves the safety of the temporary constraint before welding of the upper and lower steel column components. At the same time, this device has fewer structural components, is easy to install and disassemble, and can be reused.

[0039] In this embodiment, as Figure 2 As shown, the fixing plate 3 is provided with:

[0040] Fixing lugs 3-1 are used for fixing and connecting the upper steel column 1 or the lower steel column 2 with bolts;

[0041] 3-2 is a lifting lug hole used for connecting to lifting equipment during hoisting operations;

[0042] Mounting lugs 3-3 are used for fixing the connecting plate 4 with bolts.

[0043] Correspondingly, such as Figure 2 As shown, the connecting plate 4 is provided with connecting holes 4-1 corresponding to the mounting ear holes 3-3. Each connecting hole 4-1 corresponds to a mounting ear hole 3-3, and the same bolt passes through and fixes them.

[0044] Furthermore, each fixing plate 3 has multiple fixing lugs 3-1, lifting lugs 3-2, and mounting lugs 3-3, and all fixing lugs 3-1, lifting lugs 3-2, and mounting lugs on the fixing plate 3 are symmetrically arranged relative to the first center line of the fixing plate 3. The first center line is parallel to the axis of the lower steel column 2, as shown in the figure below. Figure 2 As shown, all the fixing ear holes 3-1 on each fixing plate 3 are arranged symmetrically along the axis. For example, if there are three fixing ear holes 3-1 on the left side of the axis of symmetry, there are also three fixing ear holes 3-1 on the right side. The same applies to the lifting ear holes 3-2 and the mounting ears.

[0045] In addition, in some embodiments, the number of connecting holes 4-1 on the fixing plate 3 is the sum of the number of lifting lug holes 3-2 and the number of mounting lug holes 3-3. One of the mounting holes 3-3 has a larger opening diameter than the others. This serves two purposes: firstly, it can also be used as a lifting lug hole, and secondly, it reduces the number of openings on the plate, thereby reducing the weakening effect of the openings on the plate.

[0046] In this embodiment, as Figure 2 As shown, both the fixing plate 3 and the connecting plate 4 are rectangular in shape, and the aspect ratio of the connecting plate 4 is greater than that of the fixing plate 3. In this way, on the one hand, the material used for the connecting plate 4 can be reduced, and on the other hand, the total mass caused by the excessive size of the connecting plate 4 can be avoided.

[0047] In addition, the fixing lugs 3-1 on the fixing plate 3 are arranged along the length of the upper steel column 1 or the lower steel column 2. This can meet the allowable distance of the bolts on the flange. If the holes are too close to the web, it may increase the risk of local buckling of the flange plate, thereby reducing the stability and load-bearing capacity of the structure.

[0048] The diameter of the lifting lug hole 3-2 is larger than that of the installation lug hole 3-3, which facilitates the passage of the lifting steel cable and the adjustment of the verticality after temporary fixation.

[0049] Generally, the upper steel column 1 and the lower steel column 2 are H-shaped steel columns or cross-shaped steel columns.

[0050] In this application, the connecting plate 4 is used for temporary fixation when the upper steel column 1 and the lower steel column 2 are welded. During the installation of the upper and lower steel column components, the center line of the long side of the fixing plate 3 is aligned with the center line of the short side of the steel column component and is fixed in pairs of four to the opposite sides of the upper and lower ends of the steel column component. The connecting plates 4 are fixed in pairs of eight to the inner and outer sides of the ends of each fixing plate 3. The length of the fixing plate 3 is slightly greater than the length of the end of the steel column component so that the projection positions of the lifting lug hole 3-2 and the mounting lug hole 3-3 are outside the range of the steel column component. The fixing lug hole 3-1 is arranged along the height direction of the steel column component.

[0051] To reduce damage to the steel column components during hoisting, if the steel column component is an H-shaped steel column or a cross-shaped steel column, the fixing plate 3 is fixedly connected to the flange of the steel column component, and the fixing lugs 3-1 are arranged along the length direction of the flange of the steel column component.

Claims

1. A prefabricated ear plate for steel columns, used to connect upper and lower steel columns, characterized in that, The assembled ear plate includes: There are an even number of fixing plates. Every two fixing plates form a first plate group. In any first plate group, one fixing plate is fixed to the upper steel column and the other fixing plate is fixed to the lower steel column. The two fixing plates in the first plate group are located in the same plane. The number of connecting plates is twice that of the fixed plates. Every four connecting plates form a second plate group. In any second plate group, the four connecting plates are connected to two fixed plates of the same first plate group. Two connecting plates in the second plate group are located on the outside of the first plate group, and the other two connecting plates are located on the inside of the first plate group. The projection areas of the two connecting plates on the same side on the plane of the first fixed plate are located on both sides of the projection areas of the corresponding upper and lower steel columns on the plane of the first fixed plate. The first fixed plate is the fixed plate connected to the connecting plates. The corresponding upper and lower steel columns are the upper and lower steel columns connected by the two fixed plates. The inside of the first plate group is the side of the first plate group facing the upper and lower steel columns, and the outside of the first plate group is the side of the first plate group facing away from the upper and lower steel columns.

2. The prefabricated ear plate for steel columns according to claim 1, characterized in that, The fixing plate is provided with: Fixing lugs are used for fixing and connecting to the upper or lower steel column by bolts; Lifting lugs are used to connect to lifting equipment during hoisting operations; Mounting lugs are used for fixing the connecting plate with bolts.

3. The prefabricated ear plate for steel columns according to claim 2, characterized in that, The connecting plate is provided with connecting holes corresponding to the mounting ear holes.

4. The prefabricated ear plate for steel columns according to claim 2, characterized in that, The fixing plate has multiple fixing ears, lifting ears, and mounting ears, and all fixing ears, lifting ears, and mounting ears on the fixing plate are symmetrically arranged relative to the first center line of the fixing plate, wherein the first center line is parallel to the axis of the lower steel column.

5. The prefabricated ear plate for steel columns according to claim 2, characterized in that, The number of connection holes on the fixing plate is the sum of the number of lifting lug holes and the number of mounting lug holes.

6. The prefabricated ear plate for steel columns according to claim 1, characterized in that, Both the fixing plate and the connecting plate are rectangular in shape.

7. The prefabricated ear plate for steel columns according to claim 6, characterized in that, The aspect ratio of the connecting plate is greater than that of the fixing plate.

8. The prefabricated ear plate for steel columns according to claim 2, characterized in that, The fixing holes on the fixing plate are arranged along the length of the upper or lower steel column.

9. A prefabricated ear plate for a steel column according to claim 2, characterized in that, The diameter of the lifting lug hole is larger than the diameter of the mounting lug hole.

10. A prefabricated ear plate for a steel column according to claim 1, characterized in that, The upper and lower steel columns are H-shaped or cross-shaped steel columns.

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