Adjustable steel supporting structure

Abstract

The invention relates to the technical field of supporting structures, in particular to an adjustable steel supporting structure which comprises a supporting column, a base and an adjusting assembly. The base is welded and fixed to the bottom end of the supporting column. The adjusting assembly comprises an adjusting sleeve, a connecting plate is fixedly welded to the top of the adjusting sleeve, a cylindrical thread is arranged on the inner wall of the adjusting sleeve, and a vertical thread groove in threaded connection with the cylindrical thread is formed in the outer surface of the top end of the supporting column. By arranging the supporting columns and the adjusting assemblies, rapid assembly and height adjustment of the steel supporting structure are achieved, the construction efficiency is remarkably improved, stepless adjustment of the supporting height is achieved through thread transmission, the precise requirement under the complex working condition is met, secondly, due to the standardized connection design, disassembly and repeated use are convenient, the construction cost is reduced, and meanwhile the construction efficiency is improved. The application range of the steel supporting structure is expanded, and the steel supporting structure can be widely applied to high-rise buildings, bridge engineering and temporary supporting scenes.

Description

Technical Field

[0001] The present application relates to the technical field of support structures, and in particular to an adjustable steel support structure. Background Art

[0002] Steel structures are increasingly used in the construction industry, particularly in high-rise buildings and long-span structures. Steel support structures are widely adopted due to their high strength, lightweight construction, and rapid construction. However, traditional steel support structures often require extensive on-site welding and bolting during assembly, which is not only time-consuming and labor-intensive but also difficult to quickly adjust and reuse. In recent years, the rise of modular and prefabricated buildings has placed higher demands on the rapid assembly and adjustability of steel support structures.

[0003] At present, common steel support structure assembly technologies mainly include the following: Welding connection: The steel support members are fixed by on-site welding. The advantage is high connection strength, but the disadvantage is long construction period and difficulty in disassembly and adjustment.

[0004] Bolt connection: Components are connected by high-strength bolts. The advantage is that they are easy to disassemble, but the installation accuracy is high, and the construction efficiency is low when the number of bolts is large.

[0005] Prefabricated modular support: The support structure is prefabricated in the factory and then transported to the site for assembly. The advantage is fast construction speed, but poor flexibility and difficulty in adapting to the complex and changing needs of the site.

[0006] In summary, the main drawback of existing technologies is their inability to balance the demands of rapid assembly and high-precision adjustment. While welded and bolted connections can meet strength requirements, they suffer from low construction efficiency and difficulty in achieving flexible adjustment of support height. Prefabricated modular supports, while speeding up construction, lack on-site adaptability and cannot meet the demands of complex working conditions.

[0007] To this end, the present application provides an adjustable steel support structure. Summary of the Invention

[0008] The purpose of this application is to solve at least one technical problem raised in the background technology.

[0009] The present application provides an adjustable steel support structure, comprising a support column, a base, and an adjustment assembly; The support column is a hollow steel pipe structure, and the base is welded and fixed to the bottom end of the support column; The adjustment assembly includes an adjustment sleeve, a connecting plate is welded and fixed to the top of the adjustment sleeve, the inner wall of the adjustment sleeve is provided with a cylindrical thread, and the top outer surface of the support column is provided with a vertical thread groove threadedly connected to the cylindrical thread, and the adjustment sleeve is threadedly connected to the top outer surface of the support column.

[0010] By adopting the above technical solution, the adjusting sleeve can be rotated and automatically moved upward or downward by the action of the cylindrical thread and the vertical thread groove to adjust the position of the adjusting sleeve, thereby achieving precise adjustment of the support height.

[0011] Preferably, the support column is made of Q345B high-strength steel pipe, the adjusting sleeve is made of cast steel, and the connecting plate is welded from steel plates.

[0012] By adopting the above technical solution, the overall strength of the steel support structure is effectively improved.

[0013] Preferably, a plurality of supporting angle steels are welded and fixed to the outer surface of the top end of the adjusting sleeve in a circumferential array, and the top ends of the plurality of supporting angle steels are welded and fixed to the lower surface of the connecting plate.

[0014] By adopting the above technical solution, the strength of the connection between the adjusting sleeve and the connecting plate can be effectively improved under the action of a plurality of supporting angle steels.

[0015] Preferably, a plurality of mounting posts are welded and fixed to the outer surface of the bottom end of the adjusting sleeve in a circumferential array, and an operating ring is welded and fixed to one end of the plurality of mounting posts away from the adjusting sleeve.

[0016] By adopting the above technical solution, personnel can rotate the adjusting sleeve by rotating the operating ring, thereby facilitating the personnel to rotate the adjusting sleeve.

[0017] Preferably, a concrete seat is provided at the bottom end of the support column, and the concrete seat is pre-cast in a foundation pit at a designated installation location. Positioning components for quickly fixing the base to the concrete seat are provided inside the support column and the base.

[0018] By adopting the above technical solution, when the steel support structure is installed, the base and the concrete seat can be quickly fixed through the positioning assembly.

[0019] Preferably, the positioning assembly includes a sink groove opened on the upper surface of the concrete seat and adapted to the base, the base is slidably connected to the inner wall of the sink groove, an annular cavity and an installation cavity are respectively opened inside the base, the inner wall of the annular cavity is opened with four rectangular openings in a circular array, and the inner walls of the four rectangular openings are all slidably provided with positioning blocks, and the inner wall of the sink groove is opened with a positioning groove adapted to the positioning block.

[0020] By adopting the above technical solution, when installing the support column, the support column can be inserted into the sink groove on the concrete base through the base, and the base and the inner wall of the sink groove can be quickly positioned by inserting the positioning block into the positioning groove.

[0021] Preferably, the inner wall of the mounting cavity is provided with four threaded columns in a circular array, and one end of the four threaded columns extends to the interior of the annular cavity, and the ends of the four positioning blocks are provided with cylindrical thread grooves that are respectively threadedly connected to the outer surfaces of the four threaded columns, and the ends of the positioning blocks are provided with two symmetrical cylindrical cavities, and the inner walls of the two cylindrical cavities are slidably provided with limiting columns, and the ends of the limiting columns are fixedly connected to the inner wall of the annular cavity.

[0022] By adopting the above technical solution, the positioning block can be automatically moved by the rotation of the threaded column and under the action of the cylindrical threaded groove, and the stability of the positioning block during movement can be ensured under the action of the limiting column.

[0023] Preferably, the inner bottom wall of the support column is rotatably provided with a rotating rod extending to the inside of the mounting cavity, the surface of the rotating rod is fixed with a driving bevel gear, the ends of the four threaded columns are fixed with driven bevel gears that mesh with the driving bevel gear, the outer surface of the support column is rotatably provided with a connecting rod extending to the inside of the support column, one end of the connecting rod and the surface of the rotating rod are respectively fixed with a first bevel gear and a second bevel gear that mesh with each other, the other end of the connecting rod is fixed with a turntable, and a crank is rotatably provided on the surface of the turntable.

[0024] By adopting the above technical solution, the turntable can be rotated by turning the crank, and the rotating rod can be driven to rotate automatically under the action of the first bevel gear and the second bevel gear. At the same time, the rotation of the rotating rod can drive the active bevel gear to rotate, thereby driving the four driven bevel gears to rotate, and then driving the four threaded columns to rotate simultaneously.

[0025] Preferably, a locking assembly for locking the adjusting sleeve is provided at the inner top of the support column, and the locking assembly includes a disc fixed to the top of the rotating rod, and a connecting tube fixed to the top of the support column, the outer surface of the connecting tube is symmetrically provided with two square openings, and the inner walls of the two square openings are slidably provided with sliders, the end of the slider is fixed with an arc-shaped mounting plate, and the outer arc surface of the arc-shaped mounting plate is fixed with an elastic rubber pad for squeezing and locking with the cylindrical thread of the inner wall of the adjusting sleeve.

[0026] By adopting the above technical solution, the elastic rubber pad on the surface of the arc-shaped mounting plate can be driven to press against the inner wall of the adjusting sleeve through the movement of the slider, thereby achieving effective locking of the adjusting sleeve.

[0027] Preferably, the lower surfaces of the two sliders are slidingly connected to the upper surface of the disc, and a rotating pressure plate corresponding to the two sliders is provided at the center of the upper surface of the disc through a rotating shaft. Both ends of the rotating pressure plate and the ends of the sliders are provided with arc-shaped chamfers, and two return springs are symmetrically fixed on the inner arc surface of the arc-shaped mounting plate, and the end of the return spring away from the arc-shaped mounting plate is fixedly connected to the outer surface of the connecting tube.

[0028] By adopting the above technical solution, the rotation of the rotating rod can drive the disc to rotate, thereby driving the rotating pressure plate to rotate, thereby pushing the two sliders, and at the same time, the slider can be quickly reset under the action of the reset spring.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. The adjustable steel support structure described in the present application, by setting a support column and an adjustment component, enables the steel support structure to rotate by rotating the operating ring during actual use. The rotation of the adjusting sleeve drives the adjusting sleeve to automatically move upward or downward under the action of the cylindrical thread and the vertical thread groove, thereby adjusting the position of the adjusting sleeve, thereby achieving precise adjustment of the support height, and then achieving rapid assembly and height adjustment of the steel support structure, significantly improving construction efficiency, and achieving stepless adjustment of the support height through threaded transmission, meeting the precise requirements under complex working conditions. Secondly, the standardized connection design facilitates disassembly and reuse, reduces construction costs, and at the same time expands the scope of application of the steel support structure, which can be widely used in high-rise buildings, bridge projects and temporary support scenarios.

[0030] 2. The adjustable steel support structure described in the present application, by setting a positioning assembly, when installing the steel support structure, first insert the base into the sink groove on the concrete seat, and after the height of the adjusting sleeve is adjusted, the turntable is rotated by the crank handle. The rotation of the turntable drives the connecting rod to rotate. The rotation of the connecting rod drives the rotating rod to rotate under the action of the first bevel gear and the second bevel gear. The rotation of the rotating rod drives the active bevel gear to rotate. The rotation of the active bevel gear drives the four driven bevel gears to rotate, thereby driving the four threaded columns to rotate at the same time. The rotation of the threaded column drives the positioning block to automatically move outward under the action of the cylindrical thread groove, and inserts it into the positioning groove on the inner wall of the sink groove, thereby realizing rapid positioning of the base and the concrete seat, thereby effectively improving the stability of the steel support structure during support.

[0031] 3. The adjustable steel support structure described in the present application is provided with a locking assembly. After the height of the adjusting sleeve is adjusted, when the base and the concrete seat are positioned, the rotation of the rotating rod drives the disc to rotate, and the rotation of the disc drives the rotating pressure plate to rotate. During the rotation of the rotating pressure plate, the two end surfaces of the rotating pressure plate contact the two sliders respectively, and then the rotating pressure plate continues to rotate, which can push the two sliders outward at the same time, so that the elastic rubber pad on the arc-shaped mounting plate at the end of the slider is pressed against the cylindrical thread on the inner wall of the adjusting sleeve, so that the adjusting sleeve can be effectively locked under the action of extrusion and friction, thereby further improving the stability of the steel support structure during support. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This is a schematic diagram of the three-dimensional structure of the support column in Example 1 of the present application; Figure 3 This is a bottom-view structural diagram of the adjustment sleeve in Example 1 of the present application; Figure 4 This is a schematic diagram of the overall structure of Example 2 of the present application; Figure 5 is a schematic cross-sectional view of the second embodiment of the present application; Figure 6 This application Figure 5 A in the middle is an enlarged structural diagram; Figure 7 This application Figure 5 The enlarged structural diagram at B in the middle; Figure 8 This is a schematic diagram of the top cross-sectional structure of the adjusting sleeve in Example 2 of the present application; Figure 9 This application Figure 8 Enlarged structural diagram at point C in the middle.

[0033] Description of reference numerals: 100. Support column; 200, base; 300, adjustment assembly; 301, adjustment sleeve; 302, connection plate; 303, cylindrical thread; 304, vertical thread groove; 305, support angle steel; 306, operating ring; 400, concrete seat; 500, positioning assembly; 501, sink; 502, positioning block; 503, positioning groove; 504, threaded column; 505, cylindrical threaded groove; 506, limiting column; 507, rotating rod; 508, driving bevel gear; 509, driven bevel gear; 5010, first bevel gear; 5011, second bevel gear; 5012, rotating disk; 600, locking assembly; 601, disc; 602, connecting pipe; 603, slider; 604, arc-shaped mounting plate; 605, elastic rubber pad; 606, rotating pressure plate; 607, return spring. DETAILED DESCRIPTION

[0034] The following combination Figures 1 to 9 , further details of this application are given.

[0035] Example 1 Please pay attention to Figures 1 to 3 , an adjustable steel support structure, including a support column 100, a base 200 and an adjustment assembly 300; the support column 100 is a hollow steel pipe structure, and the base 200 is welded and fixed to the bottom end of the support column 100; the adjustment assembly 300 includes an adjusting sleeve 301, a connecting plate 302 is welded and fixed to the top of the adjusting sleeve 301, the inner wall of the adjusting sleeve 301 is provided with a cylindrical thread 303, and the top outer surface of the support column 100 is provided with a vertical thread groove 304 threadedly connected to the cylindrical thread 303, and the adjusting sleeve 301 is threadedly connected to the top outer surface of the support column 100.

[0036] Specifically, the adjusting sleeve 301 can be rotated and automatically moved upward or downward by the cylindrical thread 303 and the vertical thread groove 304 to adjust the position of the adjusting sleeve 301, thereby achieving precise adjustment of the support height.

[0037] Please refer to Figure 2 , Figure 3 The support column 100 is made of Q345B high-strength steel pipe, the adjusting sleeve 301 is made of cast steel, and the connecting plate 302 is welded from steel plates.

[0038] Specifically, the overall strength of the steel support structure is effectively improved.

[0039] Please refer to Figure 1 , Figure 3 The outer surface of the top end of the adjusting sleeve 301 is welded and fixed with a plurality of supporting angle steels 305 in a circumferential array, and the top ends of the plurality of supporting angle steels 305 are welded and fixed to the lower surface of the connecting plate 302 .

[0040] Specifically, the connection strength between the adjusting sleeve 301 and the connecting plate 302 can be effectively improved under the action of the plurality of supporting angle steels 305 .

[0041] Please refer to Figure 1 , Figure 3 A plurality of mounting posts are welded and fixed to the outer surface of the bottom end of the adjusting sleeve 301 in a circumferential array, and an operating ring 306 is welded and fixed to one end of the plurality of mounting posts away from the adjusting sleeve 301 .

[0042] Specifically, a person can rotate the adjustment sleeve 301 by rotating the operating ring 306 , thereby facilitating the person to rotate the adjustment sleeve 301 .

[0043] In this embodiment, by providing a support column 100 and an adjustment assembly 300, the steel support structure can drive the adjustment sleeve 301 to rotate by rotating the operating ring 306 during actual use. The rotation of the adjustment sleeve 301 drives the adjustment sleeve 301 to automatically move upward or downward under the action of the cylindrical thread 303 and the vertical thread groove 304, thereby adjusting the position of the adjustment sleeve 301, thereby achieving precise adjustment of the support height, and then achieving rapid assembly and height adjustment of the steel support structure, significantly improving construction efficiency, and achieving stepless adjustment of the support height through threaded transmission, meeting the precise requirements under complex working conditions. Secondly, the standardized connection design facilitates disassembly and reuse, reduces construction costs, and at the same time expands the scope of application of the steel support structure, which can be widely used in high-rise buildings, bridge projects and temporary support scenarios.

[0044] Example 2 Based on the first embodiment, Figures 4 to 9 , and the difference from the first embodiment is that: Please refer to Figure 4 , Figure 5 A concrete seat 400 is provided at the bottom end of the support column 100. The concrete seat 400 is pre-cast in the foundation pit at the designated installation position. A positioning component 500 is provided inside the support column 100 and the base 200 for quickly fixing the base 200 and the concrete seat 400.

[0045] Specifically, when the steel support structure is installed, the base 200 and the concrete seat 400 can be quickly fixed by the positioning assembly 500 .

[0046] Please refer to Figure 5 , Figure 6 The positioning assembly 500 includes a sink 501 opened on the upper surface of the concrete seat 400 and adapted to the base 200. The base 200 is slidably connected to the inner wall of the sink 501. The interior of the base 200 is respectively provided with an annular cavity and an installation cavity. The inner wall of the annular cavity is provided with four rectangular openings in a circular array. The inner walls of the four rectangular openings are all slidably provided with positioning blocks 502. The inner wall of the sink 501 is provided with a positioning groove 503 adapted to the positioning block 502.

[0047] Specifically, when installing the support column 100 , the support column 100 can be inserted into the sink 501 on the concrete base 400 through the base 200 , and the positioning block 502 can be inserted into the positioning groove 503 to achieve rapid positioning of the base 200 and the inner wall of the sink 501 .

[0048] Please refer to Figure 5 , Figure 6 The inner wall of the mounting cavity is provided with four threaded columns 504 in a circular array, and one end of the four threaded columns 504 extends to the interior of the annular cavity. The ends of the four positioning blocks 502 are provided with cylindrical thread grooves 505 that are respectively threadedly connected to the outer surfaces of the four threaded columns 504. The end of the positioning block 502 is provided with two symmetrical cylindrical cavities, and the inner walls of the two cylindrical cavities are slidably provided with limiting columns 506, and the ends of the limiting columns 506 are fixedly connected to the inner wall of the annular cavity.

[0049] Specifically, the positioning block 502 can be driven to move automatically by the rotation of the threaded column 504 and under the action of the cylindrical threaded groove 505 , while the stability of the positioning block 502 during movement can be ensured under the action of the limiting column 506 .

[0050] Please refer to Figure 5 , Figure 6 The inner bottom wall of the support column 100 is rotatably provided with a rotating rod 507 extending to the inside of the mounting cavity, and a driving bevel gear 508 is fixed on the surface of the rotating rod 507. The ends of the four threaded columns 504 are fixed with driven bevel gears 509 that mesh with the driving bevel gear 508. The outer surface of the support column 100 is rotatably provided with a connecting rod extending to the inside of the support column 100, and one end of the connecting rod and the surface of the rotating rod 507 are respectively fixed with a first bevel gear 5010 and a second bevel gear 5011 that mesh with each other. The other end of the connecting rod is fixed with a turntable 5012, and a crank is rotatably provided on the surface of the turntable 5012.

[0051] Specifically, the turntable 5012 can be rotated by turning the crank, and the rotating rod 507 can be driven to rotate automatically under the action of the first bevel gear 5010 and the second bevel gear 5011. At the same time, the rotation of the rotating rod 507 can drive the active bevel gear 508 to rotate, thereby driving the four driven bevel gears 509 to rotate, and then driving the four threaded columns 504 to rotate simultaneously.

[0052] The present invention provides a positioning assembly 500. When installing the steel support structure, the base 200 is first inserted into the sink groove 501 on the concrete seat 400. After the height of the adjusting sleeve 301 is adjusted, the turntable 5012 is rotated by the crank. The rotation of the turntable 5012 drives the connecting rod to rotate. The rotation of the connecting rod drives the rotating rod 507 to rotate under the action of the first bevel gear 5010 and the second bevel gear 5011. The rotation of the rotating rod 507 drives the active bevel gear 508 to rotate. The rotation of the active bevel gear 508 drives the four driven bevel gears 509 to rotate, thereby driving the four threaded columns 504 to rotate simultaneously. The rotation of the threaded column 504 drives the positioning block 502 to automatically move outward under the action of the cylindrical thread groove 505 and insert it into the positioning groove 503 on the inner wall of the sink groove 501, thereby realizing rapid positioning of the base 200 and the concrete seat 400, thereby effectively improving the stability of the steel support structure during support.

[0053] Please refer to Figure 5 , Figure 7 A locking assembly 600 for locking the adjusting sleeve 301 is provided at the inner top of the support column 100. The locking assembly 600 includes a disc 601 fixed to the top of the rotating rod 507, and a connecting tube 602 fixed to the top of the support column 100. The outer surface of the connecting tube 602 is symmetrically provided with two square openings, and the inner walls of the two square openings are slidably provided with sliders 603. The end of the slider 603 is fixed with an arc-shaped mounting plate 604, and the outer arc surface of the arc-shaped mounting plate 604 is fixed with an elastic rubber pad 605 for squeezing and locking with the cylindrical thread 303 on the inner wall of the adjusting sleeve 301.

[0054] Specifically, the movement of the slider 603 can drive the elastic rubber pad 605 on the surface of the arc-shaped mounting plate 604 to press against the inner wall of the adjusting sleeve 301 , thereby achieving effective locking of the adjusting sleeve 301 .

[0055] Please refer to Figure 8 , Figure 9 The lower surfaces of the two sliders 603 are slidably connected to the upper surface of the disk 601. A rotating pressure plate 606 corresponding to the two sliders 603 is provided at the center of the upper surface of the disk 601 through a rotating shaft. Both ends of the rotating pressure plate 606 and the ends of the sliders 603 are provided with arc chamfers. Two return springs 607 are symmetrically fixed on the inner arc surface of the arc-shaped mounting plate 604, and the end of the return spring 607 away from the arc-shaped mounting plate 604 is fixedly connected to the outer surface of the connecting tube 602.

[0056] Specifically, the rotation of the rotating rod 507 can drive the disc 601 to rotate, thereby driving the rotating pressure plate 606 to rotate, thereby pushing the two sliders 603, and at the same time, the sliders 603 can be quickly reset under the action of the reset spring 607.

[0057] Among them, the present invention is provided with a locking assembly 600. After the height of the adjusting sleeve 301 is adjusted, when the base 200 and the concrete seat 400 are positioned, the rotation of the rotating rod 507 can also drive the disc 601 to rotate, and the rotation of the disc 601 drives the rotating pressure plate 606 to rotate. During the rotation of the rotating pressure plate 606, after the two end surfaces of the rotating pressure plate 606 contact the two sliders 603 respectively, the rotating pressure plate 606 continues to rotate, which can push the two sliders 603 outward at the same time, so that the elastic rubber pad 605 on the arc-shaped mounting plate 604 at the end of the slider 603 is pressed against the cylindrical thread 303 on the inner wall of the adjusting sleeve 301, so that the adjusting sleeve 301 can be effectively locked under the action of extrusion and friction, thereby further improving the stability of the steel support structure during support.

[0058] Working principle: During actual use of the steel support structure, the base 200 is first inserted into the sink groove 501 on the concrete base 400, and the adjusting sleeve 301 is driven to rotate by rotating the operating ring 306. The rotation of the adjusting sleeve 301 drives the adjusting sleeve 301 to automatically move upward or downward under the action of the cylindrical thread 303 and the vertical thread groove 304, thereby adjusting the position of the adjusting sleeve 301, thereby achieving precise adjustment of the support height, and further achieving rapid assembly and height adjustment of the steel support structure, significantly improving construction efficiency, and achieving stepless adjustment of the support height through thread transmission. It meets the precise requirements under complex working conditions. Secondly, the standardized connection design is easy to disassemble and reuse, which reduces construction costs. At the same time, it expands the application scope of the steel support structure and can be widely used in high-rise buildings, bridge projects and temporary support scenes. After that, after the height of the adjustment sleeve 301 is adjusted, the turntable 5012 is rotated by the crank handle. The rotation of the turntable 5012 drives the connecting rod to rotate. The rotation of the connecting rod drives the rotating rod 507 to rotate under the action of the first bevel gear 5010 and the second bevel gear 5011. The rotation of the rotating rod 507 drives the active bevel gear 508 to rotate. The rotation of the active bevel gear 508 drives the four driven bevel gears 509 to rotate, thereby driving the four threaded columns 504 to rotate at the same time. The rotation of the threaded column 504 drives the positioning block 502 to automatically move outward under the action of the cylindrical thread groove 505 and insert it into the positioning groove 503 on the inner wall of the sink 501, thereby realizing the rapid positioning of the base 200 and the concrete seat 400, thereby effectively improving the stability of the steel support structure during support. At the same time, after the height adjustment of the adjusting sleeve 301 is completed, when the base 200 and the concrete seat 400 are positioned, the rotation of the rotating rod 507 can also drive the circular The disk 601 rotates, and the rotation of the disk 601 drives the rotating pressure plate 606 to rotate. During the rotation of the rotating pressure plate 606, after the two end surfaces of the rotating pressure plate 606 contact the two sliders 603 respectively, the rotating pressure plate 606 continues to rotate, which can push the two sliders 603 outward at the same time, so that the elastic rubber pad 605 on the arc-shaped mounting plate 604 at the end of the slider 603 is tightly pressed against the cylindrical thread 303 on the inner wall of the adjusting sleeve 301, so that the adjusting sleeve 301 can be effectively locked under the action of extrusion and friction, thereby further improving the stability of the steel support structure during support.

[0059] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An adjustable steel support structure, characterized in that: It includes a support column (100), a base (200) and an adjustment component (300); The support column (100) is a hollow steel pipe structure, and the base (200) is welded and fixed to the bottom end of the support column (100); The adjusting assembly (300) comprises an adjusting sleeve (301), a connecting plate (302) is welded and fixed to the top of the adjusting sleeve (301), a cylindrical thread (303) is provided on the inner wall of the adjusting sleeve (301), and a vertical thread groove (304) is provided on the outer surface of the top end of the supporting column (100) and is threadedly connected to the outer surface of the top end of the supporting column (100). The adjusting sleeve (301) is threadedly connected to the outer surface of the top end of the supporting column (100).

2. The adjustable steel support structure according to claim 1, characterized in that: The support column (100) is made of Q345B high-strength steel pipe, the adjustment sleeve (301) is made of cast steel, and the connecting plate (302) is made of welded steel plates.

3. The adjustable steel support structure according to claim 1, characterized in that: A plurality of supporting angle steels (305) are welded and fixed to the outer surface of the top end of the adjusting sleeve (301) in a circumferential array, and the top ends of the plurality of supporting angle steels (305) are welded and fixed to the lower surface of the connecting plate (302).

4. The adjustable steel support structure according to claim 1, characterized in that: A plurality of mounting columns are welded and fixed to the outer surface of the bottom end of the adjusting sleeve (301) in a circumferential array, and an operating ring (306) is welded and fixed to one end of the plurality of mounting columns away from the adjusting sleeve (301).

5. The adjustable steel support structure according to claim 1, characterized in that: A concrete seat (400) is provided at the bottom end of the support column (100), and the concrete seat (400) is pre-cast in a foundation pit at a designated installation location. A positioning assembly (500) for quickly fixing the base (200) and the concrete seat (400) is provided inside the support column (100) and the base (200).

6. The adjustable steel support structure according to claim 5, characterized in that: The positioning assembly (500) includes a trough (501) provided on the upper surface of the concrete seat (400) and adapted to the base (200), the base (200) being slidably connected to the inner wall of the trough (501), an annular cavity and an installation cavity being respectively provided inside the base (200), the inner wall of the annular cavity being provided with four rectangular openings in a circumferential array, the inner walls of the four rectangular openings being slidably provided with positioning blocks (502), and the inner wall of the trough (501) being provided with a positioning groove (503) adapted to the positioning block (502).

7. The adjustable steel support structure according to claim 6, characterized in that: The inner wall of the installation cavity is provided with four threaded columns (504) rotating in a circular array, and one end of each of the four threaded columns (504) extends into the interior of the annular cavity, and the ends of the four positioning blocks (502) are provided with cylindrical thread grooves (505) respectively threadedly connected to the outer surfaces of the four threaded columns (504), and the end of the positioning block (502) is provided with two symmetrical cylindrical cavities, and the inner walls of the two cylindrical cavities are slidably provided with limiting columns (506), and the ends of the limiting columns (506) are fixedly connected to the inner wall of the annular cavity.

8. The adjustable steel support structure according to claim 7, characterized in that: The inner bottom wall of the support column (100) is rotatably provided with a rotating rod (507) extending into the interior of the installation cavity, the surface of the rotating rod (507) is fixedly provided with a driving bevel gear (508), and the ends of the four threaded columns (504) are fixedly provided with a driven bevel gear (509) that meshes with the driving bevel gear (508). The outer surface of the support column (100) is rotatably provided with a connecting rod extending into the interior of the support column (100), one end of the connecting rod and the surface of the rotating rod (507) are respectively fixedly provided with a first bevel gear (5010) and a second bevel gear (5011) that mesh with each other, and the other end of the connecting rod is fixedly provided with a turntable (5012), and a crank is rotatably provided on the surface of the turntable (5012).

9. The adjustable steel support structure according to claim 8, characterized in that: The inner top of the support column (100) is provided with a locking assembly (600) for locking the adjustment sleeve (301), and the locking assembly (600) includes a disc (601) fixed on the top of the rotating rod (507), and a connecting tube (602) fixed on the top of the support column (100), the outer surface of the connecting tube (602) is symmetrically provided with two square openings, and the inner walls of the two square openings are both slidably provided with sliders (603), the end of the slider (603) is fixed with an arc-shaped mounting plate (604), and the outer arc surface of the arc-shaped mounting plate (604) is fixed with an elastic rubber pad (605) for squeezing and locking with the cylindrical thread (303) on the inner wall of the adjustment sleeve (301).

10. The adjustable steel support structure according to claim 9, characterized in that: The lower surfaces of the two sliders (603) are slidably connected to the upper surface of the disc (601); a rotating pressure plate (606) corresponding to the two sliders (603) is provided at the center of the upper surface of the disc (601) via a rotating shaft; both ends of the rotating pressure plate (606) and the ends of the sliders (603) are provided with arc-shaped chamfers; two return springs (607) are symmetrically fixed on the inner arc surface of the arc-shaped mounting plate (604), and one end of the return spring (607) away from the arc-shaped mounting plate (604) is fixedly connected to the outer surface of the connecting tube (602).

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