Multi-layer shoulder beam supporting structure for large-tonnage crown block workshop

Abstract

The utility model provides a multi-layer shoulder beam supporting structure for a large-tonnage crown block plant, which is used in the technical field of crown block plant building design and comprises a four-section type middle column and a three-section type side column. Wherein the four-section type middle column comprises four steel pipe concrete columns, two section steel columns, two upper-layer steel pipe concrete columns, a first shoulder beam, a second shoulder beam, a third shoulder beam and a roof limb; the three-section type side column comprises four steel pipe concrete columns, a section steel column, a first shoulder beam, a second shoulder beam and a roof limb. By designing the four-section type middle column and the three-section type side columns, the overall force transmission path of the supporting structure of the shoulder beams is more scientific and reasonable, it is ensured that each shoulder beam has enough supporting strength, and the shoulder beams can be matched with the bearing capacity needed by a large-tonnage crown block; and the stability and the safety of the whole structure are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of overhead crane factory building design technology, and in particular relates to a multi-layer shoulder beam support structure for large-tonnage overhead crane factory buildings. Background Technology

[0002] With the continuous development of China's high-end manufacturing industry, the demand for heavy equipment and workpieces is also increasing. Double-decker overhead cranes are gaining popularity due to their high space utilization and lifting efficiency. These cranes juxtapose two layers of tracks, using cranes on the upper and lower levels to lift and transport heavy objects. However, current double-decker overhead cranes often employ a single-layer shoulder beam and cantilevered brackets as their support structure. The shoulder beam supports the upper crane, while the cantilevered brackets support the lower crane. Limited by the load-bearing capacity of the cantilevered brackets, the upper crane is typically used for lifting heavier items, while the lower crane is used for lifting lighter items or performing other tasks. This results in insufficient overall lifting capacity, failing to meet the high-efficiency lifting requirements of heavy-duty equipment in high-end manufacturing. This is especially true in industries such as steel, shipbuilding, machinery manufacturing, power, and chemicals, where double-decker, high-tonnage overhead cranes are required; the single-layer shoulder beam and cantilevered bracket support structure cannot meet the installation needs of these large-tonnage cranes. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop, which ensures that each shoulder beam has sufficient support strength to meet the support requirements of large-tonnage overhead cranes.

[0004] The technical solution adopted in this utility model is: a multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop, characterized in that it includes a four-section central column, wherein:

[0005] The first column segment of the four-section central column includes four steel-concrete composite columns, two steel columns, and a first shoulder beam located at the top of the steel columns, all connected by web members. The steel columns are arranged on both sides of the four steel-concrete composite columns and pass through the first shoulder beam. Lower crane mounting seats are respectively provided at the opposite ends of the first shoulder beam.

[0006] The second column segment of the four-section central column includes four steel-concrete composite columns and a second shoulder beam located at the top of two of the steel-concrete composite columns, with the other two steel-concrete composite columns passing through the second shoulder beam; a first upper-level crane mounting seat is provided at one end of the top of the second shoulder beam;

[0007] The third column segment of the four-section central column includes two steel-concrete composite columns, two upper steel-concrete composite columns located on the second shoulder beam, and the third shoulder beam; the third shoulder beam is located at the top of the steel-concrete composite columns and the upper steel-concrete composite columns, and a second upper crane mounting seat is provided at one end of the top of the third shoulder beam; the first upper crane mounting seat and the second upper crane mounting seat are located on opposite sides.

[0008] The fourth column segment of the four-segment central column includes a roof limb located on the third shoulder beam.

[0009] Furthermore, it also includes three-section side columns, wherein:

[0010] The first segment of the three-section side column includes four steel-concrete composite columns, one steel column, and a lower shoulder beam located at the top of the steel column, all connected by web members. The steel column is located on one side of the four steel-concrete composite columns and passes through the lower shoulder beam. The lower shoulder beam is provided with a lower crane mounting seat on the side corresponding to the steel column.

[0011] The second column segment of the three-section side column includes four steel-concrete composite columns and an upper shoulder beam located at the top of the steel-concrete composite columns. The upper shoulder beam is provided with an upper crane mounting seat on the same side as the lower crane mounting seat.

[0012] The third segment of the three-section side column includes the roof limb disposed on the upper shoulder beam.

[0013] Furthermore, the four steel-concrete composite columns of the four-section central column are arranged in a rectangular pattern, with the steel columns respectively located on both sides of the short side of the rectangle and aligned with the center line of the rectangle.

[0014] Furthermore, the center of the lower crane mounting base is aligned with the center of the steel column on the same side.

[0015] Furthermore, the center of the first upper-level crane mounting base is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns; the center of the second upper-level crane mounting base is located at the midpoint of the line connecting the centers of the other two steel-concrete composite columns.

[0016] Furthermore, the upper steel-concrete composite column is located between the first upper gantry crane mounting base and the two steel-concrete composite columns, and is arranged side by side with the steel-concrete composite columns; the edge of the roof limb away from the second upper gantry crane mounting base is located on the center line of the upper steel-concrete composite column.

[0017] Furthermore, the four steel-concrete composite columns of the three-section side column are arranged in a rectangular pattern, with the steel column located on one side of the short side of the rectangle and aligned with the center line of the rectangle.

[0018] Furthermore, the center of the upper crane mounting base of the three-section side column is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns.

[0019] Furthermore, the edge of the roof limb of the three-section side column, away from the upper crane mounting seat, is located on the center line of the other two steel-concrete composite columns.

[0020] Furthermore, the steel-concrete composite columns are arranged in an equilateral triangle with the steel columns on the same side.

[0021] The advantages and positive effects of this utility model are:

[0022] (1) This application designs a four-section central column and a three-section side column, making the overall force transmission path of the shoulder beam support structure more scientific and reasonable, ensuring that each shoulder beam has sufficient support strength and can match the load-bearing capacity required by the large-tonnage crane.

[0023] (2) By setting the steel columns and steel-concrete composite columns of the four-section central column to three different heights, the integrity between the upper and lower column sections of the four-section central column is improved, and the stability and safety of the overall structure are enhanced.

[0024] (3) By organically combining steel columns and steel-concrete composite columns, the characteristics of both are fully utilized, which not only ensures the load-bearing capacity and stability of the four-section central column, but also reduces the construction difficulty and improves the construction efficiency.

[0025] (4) By designing the shoulder beam to gradually expand outward from top to bottom, it is easier to install the double-layer crane. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a four-section central column structure according to a specific embodiment of the present invention;

[0027] Figure 2 This is the utility model Figure 1 Schematic diagram of the first shoulder beam connection part;

[0028] Figure 3 This is the utility model Figure 2 A sectional view;

[0029] Figure 4 This is the utility model Figure 1 Schematic diagram of the second shoulder beam connection part;

[0030] Figure 5 This is the utility model Figure 4 A sectional view;

[0031] Figure 6This is the utility model Figure 1 Schematic diagram of the third shoulder beam connection part;

[0032] Figure 7 This is the utility model Figure 6 A sectional view;

[0033] Figure 8 This is a schematic diagram of a three-section central column structure according to a specific embodiment of the present invention;

[0034] Figure 9 This is the utility model Figure 8 Schematic diagram of the lower shoulder beam connection part;

[0035] Figure 10 This is the utility model Figure 9 A sectional view;

[0036] Figure 11 This is the utility model Figure 8 Schematic diagram of the upper shoulder beam connection part;

[0037] Figure 12 This is the utility model Figure 11 A sectional view.

[0038] In the picture:

[0039] 1. Concrete-filled steel tube column; 2. Steel column; 3. First shoulder beam; 4. Lower crane mounting base; 5. Second shoulder beam; 6. First upper crane mounting base; 7. Upper concrete-filled steel tube column; 8. Third shoulder beam; 9. Second upper crane mounting base; 10. Upper crane mounting base; 11. Roof truss; 12. Lower shoulder beam; 13. Upper shoulder beam. Detailed Implementation

[0040] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0041] The existing double-layer overhead cranes in the factory all adopt the form of single-layer shoulder beams and cantilevered brackets, with four-limb lattice columns as the supporting structure for the shoulder beams and cantilevered brackets. The single-layer shoulder beams are located at the top of the four-limb lattice columns to support the upper-layer crane, while the cantilevered brackets are located in the middle of the four-limb lattice columns to support the lower-layer crane. Due to the limited load-bearing capacity of the cantilevered brackets, the tonnage selection of the lower-layer crane is restricted, resulting in only small-tonnage cranes being used. This leads to insufficient overall lifting capacity of the double-layer cranes, affecting the efficiency of lifting heavy workpieces, and consequently impacting overall operational efficiency and production progress. Especially with the development of high-end manufacturing, the demand for lifting equipment is increasing, and the existing double-layer cranes can no longer meet the needs of high-end manufacturing workshops. Therefore, it is urgent to improve the support structure of the double-layer cranes to meet the installation requirements of large-tonnage double-layer cranes.

[0042] This utility model proposes a multi-layer shoulder beam support structure for large-tonnage overhead crane workshops, including a four-section central column, such as... Figures 1-7 As shown, the four-segment central column includes a first segment, a second segment, a third segment, and a fourth segment arranged from bottom to top, wherein:

[0043] The first column segment of the four-section central column includes four steel-concrete composite columns 1, two steel columns 2, and a first shoulder beam 3 located at the top of the steel columns 2, connected by web members; the steel columns 2 are set on both sides of the four steel-concrete composite columns 1, the steel-concrete composite columns 1 pass through the first shoulder beam 3, and are welded to the first shoulder beam 3; the opposite ends of the first shoulder beam 3 are respectively provided with lower crane mounting seats 4.

[0044] The second column segment of the four-section central column includes four steel-concrete composite columns 1 and a second shoulder beam 5 located on top of two of the steel-concrete composite columns 1. The other two steel-concrete composite columns 1 pass through the second shoulder beam 5. A first upper-level crane mounting seat 6 is provided at one end of the top of the second shoulder beam 5.

[0045] The third column segment of the four-section central column includes two upper steel-concrete composite columns 7, two steel-concrete composite columns 1, and a third shoulder beam 8 located on the second shoulder beam 5; the third shoulder beam 8 is located at the top of the steel-concrete composite columns 1 and the upper steel-concrete composite columns 7; a second upper crane mounting seat 9 is provided at one end of the top of the third shoulder beam 8; the first upper crane mounting seat 6 and the second upper crane mounting seat 9 are located on opposite sides.

[0046] The fourth column segment of the four-section central column includes the roof limb 11 located on the third shoulder beam 8.

[0047] The first shoulder beam 3, the second shoulder beam 5, and the third shoulder beam 8 mentioned above are all horizontally arranged. For example... Figure 2 , Figure 3 As shown, the area of ​​the first shoulder beam 3 is larger than the area of ​​the shape enclosed by the two steel columns 2 and the four steel-concrete composite columns 1, and the first shoulder beam 3 is provided with through holes that cooperate with the four steel-concrete composite columns 1. The two steel columns 2 have the same height, and the height of the four steel-concrete composite columns 1 is greater than that of the two steel columns 2. Therefore, the four steel-concrete composite columns 1 can extend to the second column section through the through holes on the first shoulder beam 3. The lower crane mounting base 4 is set on both sides of the four steel-concrete composite columns 1 that pass through the first shoulder beam 3, leaving enough space for the installation of the lower crane. The first shoulder beam 3 is tightly welded to the steel columns 2 and the steel-concrete composite columns 1 to form a stable overall structure.

[0048] like Figure 1 , Figure 4 and Figure 5As shown, of the four steel-concrete composite columns 1, two of them are taller than the other two. The second shoulder beam 5 is located at the top of the two shorter steel-concrete composite columns 1 and has through holes that cooperate with the two taller steel-concrete composite columns 1. The two taller steel-concrete composite columns 1 extend through these through holes to the third column segment. The area of ​​the second shoulder beam 5 is larger than the area of ​​the shape enclosed by the four steel-concrete composite columns 1. All four steel-concrete composite columns 1 are tightly welded to the second shoulder beam 5 to form a stable overall structure.

[0049] The aforementioned second shoulder beam 5 is also equipped with two upper-level steel-concrete composite columns 7. The first upper-level gantry crane mounting seat 6 is located at the end away from the two taller steel-concrete composite columns 1, reserving sufficient space for the installation of the upper-level gantry crane on one side of the four-section central column. The two upper-level steel-concrete composite columns 7 are located between the first upper-level gantry crane mounting seat 6 and the two taller steel-concrete composite columns 1. The tops of the upper-level steel-concrete composite columns 7 and the two taller steel-concrete composite columns 1 are flush. The third shoulder beam 8 is welded to the tops of the upper-level steel-concrete composite columns 7 and the two taller steel-concrete composite columns 1. Figure 6 , Figure 7 As shown, the area of ​​the third shoulder beam 8 is larger than the area of ​​the shape enclosed by the two upper steel-concrete composite columns 7 and the two taller steel-concrete composite columns 1. The two opposite ends of the third shoulder beam 8 are respectively provided with roof limbs 11 and second upper-level gantry crane mounting seats 9. The second upper-level gantry crane mounting seats 9 and the first upper-level gantry crane mounting seats 6 are respectively located on opposite sides of the four-section central column, so as to facilitate the installation of the upper-level gantry cranes on both sides that are opposite to each other and staggered vertically.

[0050] Through the above technical solution, the roof limb 11 directly bears the roof load and transfers it to the third shoulder beam 8. The second upper-level gantry crane mounting base 9 directly bears the load of one side of the upper-level gantry crane and transfers it to the third shoulder beam 8. The third shoulder beam 8 distributes the load and transfers it to the upper-level steel-concrete composite column 7 and the taller steel-concrete composite column 1, and then transfers it to the second shoulder beam 5 through the upper-level steel-concrete composite column 7. At the same time, the first upper-level gantry crane mounting base 6 directly bears the load of the other side of the upper-level gantry crane and transfers it to the second shoulder beam 5. The second shoulder beam 5 distributes the load and transfers it to the four steel-concrete composite columns 1. Meanwhile, the lower-level gantry crane mounting bases 4 on both sides respectively bear the load of the lower-level gantry cranes on both sides and transfer the load to the first shoulder beam 3. The first shoulder beam 3 transfers the load to the two steel columns 2 and the four steel-concrete composite columns 1. The overall force transmission path is scientific and reasonable, ensuring that each shoulder beam has sufficient support strength to match the load-bearing capacity required by the large-tonnage crane. At the same time, by setting the steel columns 2 and steel-concrete composite columns 1 to three different heights, the integrity between the upper and lower column segments of the four-section central column is improved, enhancing the stability of the overall structure. In addition, the steel columns 2 have the characteristics of high strength, lightweight, and easy processing and installation, while the steel-concrete composite columns 1 have high compressive and shear bearing capacity. This application organically combines the two, which not only ensures the load-bearing capacity and stability of the four-section central column, but also reduces the construction difficulty and improves the construction efficiency.

[0051] Furthermore, the multi-layer shoulder beam support structure for large-tonnage crane workshops proposed in this application also includes three-section edge columns, such as... Figures 8-12 As shown, the three-section side column includes a first column segment, a second column segment, and a third column segment arranged from bottom to top, wherein:

[0052] The first column segment of the three-section side column includes four steel-concrete composite columns 1, one steel column 2, and a lower shoulder beam 12 located at the top of the steel column 2, all connected by web members. The steel column 2 is located on one side of the four steel-concrete composite columns 1, and the steel-concrete composite columns 1 pass through the lower shoulder beam 12. A lower crane mounting seat 4 is provided on the side of the lower shoulder beam 12 corresponding to the steel column 2.

[0053] The second column segment of the three-section side column includes four steel-concrete composite columns 1 and an upper shoulder beam 13 located at the top of the steel-concrete composite columns 1. The upper shoulder beam 13 is provided with an upper crane mounting seat 10 on the same side as the lower crane mounting seat 4.

[0054] The third column segment of the three-section edge column includes a roof limb 11 set on the upper shoulder beam 13.

[0055] like Figures 8-10As shown, the steel column 2 of the three-section side column is located on the side where the lower-level gantry crane is to be installed; the upper-level shoulder beam 13 and the lower-level shoulder beam 12 are both horizontally arranged. The area of ​​the lower-level shoulder beam 12 is larger than the area of ​​the shape enclosed by one steel column 2 and four steel-concrete composite columns 1, and the lower-level shoulder beam 12 is provided with through holes that cooperate with the four steel-concrete composite columns 1. The four steel-concrete composite columns 1 have the same height and are larger than the steel column 2. Therefore, the four steel-concrete composite columns 1 can pass through the through holes on the lower-level shoulder beam 12 and extend to the second column section of the three-section side column; the lower-level gantry crane mounting seat 4 is located on the side of the lower-level shoulder beam 12 corresponding to the steel column 2, reserving sufficient space for the installation of the lower-level gantry crane; the lower-level shoulder beam 12 is tightly welded to the steel column 2 and the steel-concrete composite columns 1 to form a stable overall structure;

[0056] like Figure 11 , Figure 12 As shown, the upper shoulder beam 13 is set at the top of the four steel pipe concrete columns 1. The four steel pipe concrete columns 1 are all tightly welded to the second shoulder beam 5 to form a stable overall structure. The area of ​​the upper shoulder beam 13 is larger than the area of ​​the shape enclosed by the four steel pipe concrete columns 1. The roof limb 11 and the upper crane mounting seat 10 are respectively provided on the opposite sides of its top. The upper crane mounting seat 10 and the lower crane mounting seat 4 are set on the same side.

[0057] Understandably, the three-section side columns are respectively set on both sides of the four-section central column, together with the four-section central column, to provide support for the two layers of overhead cranes that are connected vertically. Since the first upper-level crane mounting seat 6 and the second upper-level crane mounting seat 9 of the four-section central column are staggered vertically, the heights of the upper-level crane mounting seats 10 of the two three-section side columns are not the same, and are respectively set to correspond to the heights of the first upper-level crane mounting seat 6 and the second upper-level crane mounting seat 9.

[0058] Through the above technical solution, the roof limb 11 directly bears the roof load and transfers the roof load to the upper shoulder beam 13. The upper crane mounting seat 10 directly bears the load of the upper crane and transfers the load to the upper shoulder beam 13. The upper shoulder beam 13 distributes the load and then transfers it to the four steel-concrete composite columns 1. At the same time, the lower crane mounting seat 4 bears the load of the lower crane and transfers the load to the lower shoulder beam 12. The lower shoulder beam 12 transfers the load to one steel column 2 and four steel-concrete composite columns 1. The overall force transmission path is scientific and reasonable, ensuring that each shoulder beam of the three-section edge column has sufficient support strength to match the load-bearing capacity required by the large-tonnage crane.

[0059] Preferably, the four steel-concrete composite columns 1 of the above-mentioned four-segment central column are arranged in a rectangular shape, and the steel columns 2 are respectively set on both sides of the short side of the rectangle and aligned with the center line of the rectangle. The four steel-concrete composite columns 1 and the steel columns 2 form a stable support structure. This arrangement ensures that the first column segment has sufficient load-bearing capacity, and at the same time facilitates the first shoulder beam 3 to evenly distribute the load to each steel column 2 and steel-concrete composite column 1, thereby enhancing the stability of the overall structure and minimizing the space occupied in the factory building.

[0060] like Figure 2 , Figure 3 , Figure 9 and Figure 10 As shown, in this application, the center of the lower gantry crane mounting seat 4 of the four-section central column and the three-section side column are aligned with the center of the steel column 2 on the same side. This application, through a refined design of the position of the lower gantry crane mounting seat 4, ensures that its center is aligned with the center of the steel column 2 on the same side below the first shoulder beam 3 or the lower shoulder beam 12, thereby avoiding excessive bending moment exerted by the lower gantry crane mounting seat 4 on the first shoulder beam 3 or the lower shoulder beam 12, and ensuring the load-bearing capacity and safety of the first column segment.

[0061] like Figures 4-7 As shown, the center of the first upper-level crane mounting base 6 is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns 1; the center of the second upper-level crane mounting base 9 is located at the midpoint of the line connecting the centers of the other two steel-concrete composite columns 1. Specifically, the center of the first upper-level crane mounting base 6 is located at the midpoint of the line connecting the centers of the two lower-height steel-concrete composite columns 1, and the center of the second upper-level crane mounting base 9 is located at the midpoint of the line connecting the centers of the two higher-height steel-concrete composite columns 1. Through the refined design of the positions of the first upper-level crane mounting base 6 and the second upper-level crane mounting base 10, excessive bending moments are avoided between the first upper-level crane mounting base 6 and the second upper-level crane mounting base 9 and the third shoulder beam 8, thus ensuring the load-bearing capacity and safety of the second and third column segments.

[0062] Furthermore, such as Figure 4 and Figure 5 As shown, the upper steel-concrete composite column 7 is located between the first upper-level gantry crane mounting base 6 and the two steel-concrete composite columns 1, and is arranged parallel to the steel-concrete composite columns 1. The edge of the roof limb 11 away from the second upper-level gantry crane mounting base 9 is located on the center line of the upper steel-concrete composite column 7. Similarly, through the refined design of the position of the upper steel-concrete composite column 7, the upper steel-concrete composite column 7 and the two taller steel-concrete composite columns 1 can jointly bear the load transmitted by the third shoulder beam 8, while avoiding the roof limb 11 from forming an excessive bending moment on the third shoulder beam 8, thus ensuring the load-bearing capacity and safety of the third and fourth column segments.

[0063] Similarly, as Figures 8-10As shown, the four steel-concrete composite columns 1 of the three-section side column are distributed in a rectangular shape, and the steel column 2 is set on one side of the short side of the rectangle and aligned with the center line of the rectangle. The center of the upper gantry crane mounting seat 10 of the three-section side column is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns 1. The edge of the roof limb 11 of the three-section side column away from the upper gantry crane mounting seat 10 is located on the center line of the other two steel-concrete composite columns 1. Its working principle is the same as that of the four-section side column, and will not be described in detail here.

[0064] Furthermore, in this application, the steel-concrete composite column 1 and the steel column 2 on the same side are arranged in an equilateral triangle to further improve the load-bearing capacity of the first column segment and enhance the overall stability of the first column segment.

[0065] In this application, the cross-sectional shape of the first shoulder beam 3 matches the shape enclosed by the two steel columns 2 and the four steel-concrete composite columns 1, the cross-sectional shape of the second shoulder beam 5 matches the shape enclosed by the four steel-concrete composite columns 1, and the cross-sectional shape of the third shoulder beam 8 matches the shape enclosed by the two upper-level steel-concrete composite columns 7 and the two taller steel-concrete composite columns 1. Furthermore, the area of ​​the first shoulder beam 3 is larger than the area of ​​the second shoulder beam 5, and the area of ​​the second shoulder beam 5 is larger than the area of ​​the third shoulder beam 8. The edges of the three shoulder beams form an outward expansion effect from top to bottom, which facilitates the installation of the double-layer overhead crane.

[0066] like Figure 3 As shown, in a specific embodiment, the first shoulder beam 3 has an octagonal cross-section with four through holes in the middle. The four through holes are arranged in a rectangular pattern, with two long sides on each side of the rectangle along its length and three short sides connected in sequence on each side of its width, forming a structure that is wide in the middle and narrow at both ends. Four steel pipe concrete columns 1 pass through the four through holes and are welded to the first shoulder beam 3. Two steel columns 2 are welded to the bottom ends of the first shoulder beam 3 corresponding to the short sides. The lower crane support is welded to the top end of the first shoulder beam 3.

[0067] like Figure 5 As shown, in a specific embodiment, the cross-sectional shape of the second shoulder beam 5 is a rectangle with an arc-shaped chamfer. Two through holes are provided on one side of its length direction. Two taller steel-concrete composite columns 1 pass through the two through holes and are welded to the second shoulder beam 5. Two shorter steel-concrete composite columns 1 are welded to the bottom end of the other side of the length direction of the second shoulder beam 5. Two upper steel-concrete composite columns are welded to the middle of the top of the second shoulder beam 5 and are arranged side by side with the two taller steel-concrete composite columns 1. The first upper crane support is welded to the top of the first shoulder beam 3.

[0068] like Figure 7As shown, in a specific embodiment, the cross-sectional shape of the third shoulder beam 8 is a rectangle with four protruding rounded chamfers and the long side tapering inward; two taller steel-concrete composite columns 1 and two upper steel-concrete composite columns are welded to the bottom of the third shoulder beam 8; the roof limb 11 and the second upper crane mounting base 9 are welded to the top of the third shoulder beam 8.

[0069] Similarly, as Figure 10 and Figure 12 As shown, in a specific embodiment, the cross-sectional shape of the lower shoulder beam 12 is based on the first shoulder beam 3 with one short side removed; the cross-sectional shape of the upper shoulder beam 13 is the same as that of the third shoulder beam 8.

[0070] The steel column 2 and roof limb 11 in this application can be made of steel with any cross-sectional shape as needed, as long as the load-bearing capacity requirement is met, and there are no restrictions here.

[0071] The following example, a joint plant of a certain group company, illustrates the specific application of this utility model.

[0072] The factory building consists of two 36m spans, with an axial length of 264m and a standard column spacing of 12m. The west span is equipped with double-layer overhead cranes: the upper layer has one 320+160t double-trolley bridge crane, and the lower layer has one 200+200t double-trolley bridge crane and two 20t bridge cranes. The east span is also equipped with double-layer overhead cranes: the upper layer has one 320+160t double-trolley bridge crane, and the lower layer has one 200+200t double-trolley bridge crane and two 20t bridge cranes. All overhead cranes are rated A5. Because the two-span factory buildings are designed with double-layer overhead cranes, and the crane load exceeds 200 tons, the west-side columns of the west-span factory building and the east-side columns of the east-span factory building both adopt the three-section side columns described in this utility model, while the columns at the junction of the east and west-span factory buildings adopt the four-section central columns described in this utility model. The crane beam of the upper-layer crane rests on the upper shoulder beam 13 of the three-section side column and the second shoulder beam 5 and the third shoulder beam 8 of the four-section central column; the crane beam of the lower-layer crane rests on the lower shoulder beam of the three-section side column and the first shoulder beam 3 of the four-section central column. The three-section side columns and the four-section central columns have sufficient load-bearing capacity, allowing the lower-layer crane to be designed as a large-tonnage crane as needed. The overall force transmission path is scientific and reasonable, the force distribution method is simple, and the connection is reliable, with good stability and safety, greatly meeting the hoisting needs of high-end manufacturing workshops.

[0073] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop, characterized in that, Including a four-section central column, of which: The first column segment of the four-section central column includes four steel-concrete composite columns, two steel columns, and a first shoulder beam located at the top of the steel columns, all connected by web members. The steel columns are arranged on both sides of the four steel-concrete composite columns and pass through the first shoulder beam. Lower crane mounting seats are respectively provided at the opposite ends of the first shoulder beam. The second column segment of the four-section central column includes four steel-concrete composite columns and a second shoulder beam located at the top of two of the steel-concrete composite columns, with the other two steel-concrete composite columns passing through the second shoulder beam; a first upper-level crane mounting seat is provided at one end of the top of the second shoulder beam; The third column segment of the four-section central column includes two steel-concrete composite columns, two upper steel-concrete composite columns located on the second shoulder beam, and the third shoulder beam; the third shoulder beam is located at the top of the steel-concrete composite columns and the upper steel-concrete composite columns, and a second upper crane mounting seat is provided at one end of the top of the third shoulder beam; the first upper crane mounting seat and the second upper crane mounting seat are located on opposite sides; The fourth column segment of the four-segment central column includes a roof limb located on the third shoulder beam.

2. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 1, characterized in that, It also includes three-section side columns, in which: The first segment of the three-section side column includes four steel-concrete composite columns, one steel column, and a lower shoulder beam located at the top of the steel column, all connected by web members. The steel column is located on one side of the four steel-concrete composite columns and passes through the lower shoulder beam. The lower shoulder beam is provided with a lower crane mounting seat on the side corresponding to the steel column. The second column segment of the three-section side column includes four steel-concrete composite columns and an upper shoulder beam located at the top of the steel-concrete composite columns. The upper shoulder beam is provided with an upper crane mounting seat on the same side as the lower crane mounting seat. The third segment of the three-section side column includes the roof limb disposed on the upper shoulder beam.

3. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 2, characterized in that: The four steel-concrete composite columns of the four-section central column are arranged in a rectangular pattern, with the steel columns respectively located on both sides of the short side of the rectangle and aligned with the center line of the rectangle.

4. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 2 or 3, characterized in that: The center of the lower crane mounting base is aligned with the center of the steel column on the same side.

5. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 4, characterized in that: The center of the first upper-level crane mounting base is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns; the center of the second upper-level crane mounting base is located at the midpoint of the line connecting the centers of the other two steel-concrete composite columns.

6. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 2, 3, or 5, characterized in that: The upper steel-concrete composite column is located between the first upper gantry crane mounting base and the two steel-concrete composite columns, and is arranged side by side with the steel-concrete composite columns; the edge of the roof limb away from the second upper gantry crane mounting base is located on the center line of the upper steel-concrete composite column.

7. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 6, characterized in that: The four steel-concrete composite columns of the three-section side columns are arranged in a rectangular pattern, with the steel column located on one side of the short side of the rectangle and aligned with the center line of the rectangle.

8. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 7, characterized in that: The center of the upper crane mounting base of the three-section side column is located at the midpoint of the line connecting the centers of the two steel-concrete composite columns.

9. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to claim 8, characterized in that: The edge of the roof limb of the three-section side column, away from the upper crane mounting seat, is located on the centerline of the other two steel-concrete composite columns.

10. The multi-layer shoulder beam support structure for a large-tonnage overhead crane workshop according to any one of claims 7-9, characterized in that: The steel-concrete composite columns are arranged in an equilateral triangle with the steel columns on the same side.

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