Steel structure support platform with ductility support function

Abstract

The application discloses a steel structure supporting platform with extension supporting function, which comprises supporting columns, bases, mounting beams, supporting plates and extension assemblies; the mounting beams are erected on the top of the two supporting columns to form door-shaped supports, the two door-shaped supports are oppositely arranged along the extension direction, the extension assemblies are arranged on the inner side of the two supporting columns of the two door-shaped supports, so that the two door-shaped supports can be relatively moved to approach or move away through the extension assemblies; the bottom of each supporting column is fixedly provided with a base, the top of each supporting column is provided with a mounting beam, and each supporting beam is connected with a supporting plate; the bottom surface of the supporting plate on the two door-shaped supports is slidably arranged on the extension assembly, and the top surface of the supporting plate is supported on the bottom of the steel structure. The application relates to the technical field of supporting platforms and can solve the problem that the supporting range of the steel structure supporting platform cannot be adjusted in the prior art.

Description

Technical Field

[0001] This invention relates to the field of support platform technology, and in particular to a steel structure support platform with extendable support function. Background Technology

[0002] In recent years, due to its advantages such as high strength, strong load-bearing capacity, and relatively low self-weight, steel structures have been increasingly used in building construction, especially in large-span buildings such as factories. During construction, steel structure support platforms are required to provide stable support for the steel structure.

[0003] Currently, steel structure support platforms use a fixed connection for their overall structure, and their support range is not adjustable. This fails to provide flexible and effective support for steel structures of different sizes and spans. Therefore, there is a need for a steel structure support platform with extendable support capabilities, which can solve the problem of the non-adjustable support range in existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a steel structure support platform with extended support function, which can solve the problem of the non-adjustable support range of existing steel structure support platforms.

[0005] This invention is implemented as follows:

[0006] A steel structure support platform with extension support function includes support columns, bases, mounting beams, support plates, and extension components. The mounting beams are erected on top of two support columns to form portal frames. A pair of portal frames are arranged opposite each other along the extension direction. The extension components are located inside the two support columns of the pair of portal frames, allowing the pair of portal frames to move closer or further apart relative to each other through the extension components. Each support column has a base fixedly installed at its bottom, and each support column has a mounting beam at its top. Each mounting beam is connected to a support plate. The bottom surface of the support plate on the pair of portal frames slides on the extension components, and the top surface of the support plate supports the bottom of the steel structure.

[0007] The extension assembly includes a connecting seat, a mounting plate, a support seat, a docking plate, and a transmission mechanism; one end of a pair of connecting seats is respectively connected to the upper inner side of the two support columns of a pair of portal brackets, and the mounting plate is slidably inserted into the other end of the pair of connecting seats; a pair of support seats are respectively spaced between the middle of the mounting plate and the middle of the docking plate, and the top of the docking plate slides against the bottom surface of the support plate; the transmission mechanism is disposed on the mounting plate and the docking plate, and the transmission mechanism is connected to the pair of support plates.

[0008] The transmission mechanism includes a motor, a movable seat, a connecting rod, and a bevel gear set. The motor is mounted on the mounting plate and located between a pair of support seats. The output shaft of the motor is coaxially and fixedly connected to one of the bevel gears in the bevel gear set. A movable cavity is formed in the mating plate. Both ends of the connecting rod are rotatably mounted in the movable cavity. The connecting rod is coaxially and fixedly connected to the other bevel gear in the bevel gear set. The bevel gear set is located in the middle of the movable cavity. Two external threads with opposite directions are symmetrically formed on the connecting rod. A threaded through hole is formed in the movable seat, so that the two movable seats are mounted in the movable cavity and screwed onto the connecting rod. The tops of the two movable seats are fixedly connected to a pair of support plates.

[0009] The movable cavity has a trapezoidal cross-section that is narrower at the top and wider at the bottom, and the movable seat has a trapezoidal structure that matches the movable cavity.

[0010] The connecting seat has a movable groove, and both ends of the mounting plate are movably inserted into the movable grooves of a pair of connecting seats. A guide rod is provided in the movable groove, and the end of the mounting plate located in the movable groove has a bent portion with a through hole, allowing the guide rod to pass through.

[0011] The bottom of the support plate is provided with a guide block, and a guide groove is formed in the mating plate. The guide block is movably embedded in the guide groove.

[0012] The support column has several rods that can be raised and lowered via a sliding mechanism on its bottom outer side. The base has through holes for the rods to pass through, so that the rods pass through the base and are inserted into the ground through their bottom tips.

[0013] The sliding mechanism includes a connecting plate, a threaded rod, and a hexagonal block; a mounting cavity is formed at the bottom of the support column, the connecting plate horizontally penetrates the mounting cavity, and several insert rods are respectively connected to the bottom of the connecting plate; a threaded hole is formed in the middle of the connecting plate, so that the threaded rod is matched and screwed onto the connecting plate, and the threaded rod is rotatably set in the mounting cavity.

[0014] Vertically arranged limiting strips are formed on the inner walls of both sides of the mounting cavity, and limiting grooves are formed on both sides of the connecting plate. The limiting strips can be slidably embedded in the limiting grooves.

[0015] The top of the support column has a protrusion, and the bottom of the mounting beam has a groove. The protrusion can be fitted into the groove so that the mounting beam is fixedly mounted on the top of the support column.

[0016] A mating groove is formed on one side of the bottom of the mounting beam, and a mounting cavity is formed on one side of the top of the support column. One end of the L-shaped limiting seat is spring-loaded and can be set in the mounting cavity. The other end of the L-shaped limiting seat extends to the side of the bottom of the mounting beam. A mating block is formed on the other end of the limiting seat, and the mating block can be matched and inserted into the mating groove.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Because the present invention is equipped with an extension component, the starting motor drives the bevel gear set and connecting rod connected to the output end to rotate synchronously. As the connecting rod rotates, the two movable seats on the connecting rod move simultaneously along the movable cavity. The moving movable seats drive the support plate connected above to move. As the support plate moves, it pushes the mounting beam and support column to extend outward synchronously. During the outward movement of the support column, it drives the connecting seat connected to the inner side to move along the movable groove to both sides of the mounting plate. Through the mutual cooperation of the connecting rod and the bevel gear set, the two support plates can be moved outward to increase the support range of the support platform according to actual needs. Thus, the steel structure support platform has an extended support function, or it can be moved inward to reduce the manufacturing range of the support platform, which has higher flexibility and versatility in use.

[0019] 2. Due to the inclusion of insertion rods and a sliding mechanism, after the support column is adjusted to the designated position, an internal hex wrench is placed on the hexagonal block, and the hexagonal block is rotated. The rotating hexagonal block drives the connected threaded rod to rotate synchronously. As the threaded rod rotates, the connecting plate moves downward along the interior of the mounting cavity. The insertion rod moves with the moving connecting plate until the insertion rods on both sides below the connecting plate penetrate the base and are inserted into the ground. Through the cooperation between the threaded rod and the hexagonal block, the insertion rod can be moved down and inserted into the ground, providing auxiliary support to both sides of the support column, thereby enabling the steel structure support platform to have a stable support function.

[0020] 3. Because the present invention is equipped with protrusions and grooves, as well as docking slots and docking blocks, the limiting seat is first pulled outward to its limit position. Then, the groove at the bottom of the mounting beam is docked with the protrusion at the top of the support column. Then, the limiting seat is released, and the limiting seat is automatically reset inward by the elastic force of the spring, so that the docking block is inserted into the docking slot. Then, the mounting beam and the support column are welded. The limiting seat, which can be telescopically moved, provides auxiliary positioning for the mounting beam, preventing the mounting beam from shifting its position during welding. Thus, the steel structure support platform has an auxiliary positioning structure. Attached Figure Description

[0021] Figure 1 This is a front sectional view of the steel structure support platform with extension support function of the present invention;

[0022] Figure 2 This is a side sectional view of the steel structure support platform with extension support function of the present invention;

[0023] Figure 3 This is a top view of the steel structure support platform with extension support function of the present invention;

[0024] Figure 4This is a perspective view of the sliding mechanism in the steel structure support platform with extension support function of the present invention;

[0025] Figure 5 This is a top view of the sliding mechanism in the steel structure support platform with extension support function of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection between the support column and the installation beam in the steel structure support platform with extension support function of the present invention.

[0027] In the diagram, 1. Support column; 2. Base; 3. Mounting beam; 4. Support plate; 5. Extension assembly; 51. Connecting seat; 52. Movable groove; 53. Mounting plate; 54. Guide rod; 55. Support seat; 56. Motor; 57. Connecting plate; 58. Movable cavity; 59. Movable seat; 510. Connecting rod; 511. Bevel gear set; 512. Guide groove; 513. Guide block; 6. Mounting cavity; 7. Limiting strip; 8. Connecting plate; 9. Limiting groove; 10. Threaded rod; 11. Hexagonal block; 12. Insert rod; 13. Groove; 14. Protrusion; 15. Connecting groove; 16. Limiting seat; 17. Spring; 18. Connecting block. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Please see the appendix Figure 1 and attached Figure 2 A steel structure support platform with extension support function includes support columns 1, base 2, mounting beam 3, support plate 4, and extension component 5. The mounting beam 3 is erected on the top of two support columns 1 to form a portal frame. The pair of portal frames are arranged opposite each other along the extension direction. The extension component 5 is arranged inside the two support columns 1 of the pair of portal frames, so that the pair of portal frames can move closer or further apart relative to each other through the extension component 5. The bottom of each support column 1 is fixedly installed with a base 2, and the top of each support column 1 is provided with a mounting beam 3. Each mounting beam 3 is connected with a support plate 4. The bottom surface of the support plate 4 on the pair of portal frames is slidably mounted on the extension component 5, and the top surface of the support plate 4 is supported on the bottom of the steel structure.

[0030] By controlling a pair of portal frames to move away from each other through extension component 5, the support range of the steel structure support platform is expanded to meet the support requirements of steel structures with larger spans. Similarly, by controlling a pair of portal frames to move closer to each other through extension component 5, the support range of the steel structure support platform is reduced to meet the support requirements of steel structures with smaller spans, thus enabling stable support for steel structures of different sizes.

[0031] Preferably, the support column 1 can be made of square steel pipe or similar components, and the base 2 can be made of thick steel plate. The base 2 is welded to the bottom of the support column 1 and its surface is attached to the ground, ensuring the support stability of the support column 1. The mounting beam 3 can be made of I-beams and can be fixedly or detachably installed on the top of the support column 1. The length of the mounting beam 3 and the length of the support column 1 can be selected according to the area and height required for support of the steel structure. The support plate 4 can be made of steel plate. A pair of support plates 4 and a pair of mounting beams 3 together provide stable and reliable support for the steel structure.

[0032] Please see the appendix Figure 1 To be continued Figure 3 The extension component 5 includes a connecting seat 51, a mounting plate 53, a support seat 55, a docking plate 57, and a transmission mechanism. One end of a pair of connecting seats 51 is respectively connected to the upper inner side of the two support columns 1 of a pair of portal brackets. The mounting plate 53 is slidably inserted into the other end of the pair of connecting seats 51. A pair of support seats 55 are respectively spaced between the middle of the mounting plate 53 and the middle of the docking plate 57. The top of the docking plate 57 slides against the bottom surface of the support plate 4. The transmission mechanism is disposed on the mounting plate 53 and the docking plate 57 and is connected to the pair of support plates 4.

[0033] The transmission mechanism moves a pair of connecting seats 51 closer together, causing a pair of portal frames to move closer together, thus reducing the size of the steel structure support platform. The transmission mechanism also moves the pair of connecting seats 51 further apart, causing a pair of portal frames to move further apart, thus extending the steel structure support platform. A pair of support plates 4 are supported by a mating plate 57, ensuring the integrity of the steel structure support platform and preventing the pair of portal frames from excessively extending and separating.

[0034] Please see the appendix Figure 1 and attached Figure 2 The transmission mechanism includes a motor 56, a movable seat 59, a connecting rod 510, and a bevel gear set 511. The motor 56 is mounted on the mounting plate 53 and located between a pair of support seats 55. The output shaft of the motor 56 is coaxially and fixedly connected to one of the bevel gears of the bevel gear set 511. A movable cavity 58 is formed in the mating plate 57. The two ends of the connecting rod 510 are rotatably mounted in the movable cavity 58 through rotating bearings. The connecting rod 510 is coaxially and fixedly connected to the other bevel gear of the bevel gear set 511. The bevel gear set 511 is located in the middle of the movable cavity 58. Two external threads with opposite directions are symmetrically formed on the connecting rod 510. A threaded through hole is formed in the movable seat 59, so that the two movable seats 59 are set in the movable cavity 58 and matched and screwed onto the connecting rod 510. The tops of the two movable seats 59 are fixedly connected to a pair of support plates 4.

[0035] Preferably, the motor 56 can be a conventional motor with forward and reverse rotation capabilities, and the bevel gear set 511 can consist of two axially perpendicularly arranged 45° bevel gears. The forward or reverse rotation of the motor drives one of the bevel gears to rotate synchronously forward or reverse. This bevel gear meshes with and drives the other bevel gear to rotate synchronously forward or reverse, thereby driving the connecting rod 510 to rotate synchronously forward or reverse. Under the transmission of the threads, the rotation of the connecting rod 510 is converted into linear motion of the movable seats 59 along the axial direction of the connecting rod 510. Since the two ends of the external threads on the connecting rod 510 are in opposite directions, the pair of movable seats 59 move away from or towards each other as the connecting rod 510 rotates, thereby driving the pair of support plates 4 to move synchronously.

[0036] Please see the appendix Figure 1 The movable cavity 58 has a trapezoidal structure with a narrow top and a wide bottom, and the movable seat 59 has a trapezoidal structure that matches the movable cavity 58.

[0037] The movable cavity 58 and the movable seat 59 are arranged in a trapezoidal structure, which can prevent the movable seat 59 from rotating with the connecting rod 510, thereby ensuring that the movable seat 59 can slide linearly in the surface of the movable cavity 58 along the axial direction of the connecting rod 510; at the same time, it can also prevent the movable seat 59 from coming off the movable cavity 58 upward, thus ensuring the sliding stability of the movable seat 59.

[0038] Please see the appendix Figure 1 and attached Figure 2 The connecting seat 51 has a movable groove 52. Both ends of the mounting plate 53 are movably inserted into the movable grooves 52 of the pair of connecting seats 51. A guide rod 54 is provided in the movable groove 52. One end of the mounting plate 53 located in the movable groove 52 has a bent part with a through hole, so that the guide rod 54 passes through the through hole and through the bent part.

[0039] The movable groove 52 and the guide rod 54 are arranged along the extension direction. When a pair of portal brackets approach or move away from each other, the bent parts at both ends of the mounting plate 53 move relative to the guide rod 54 through the through holes. The guide rod 54 provides guidance for the movement of a pair of connecting seats 51, improves the movement stability of a pair of connecting seats 51, and ensures the extension and reduction functions of the steel structure support platform.

[0040] Please see the appendix Figure 1 The bottom of the support plate 4 is provided with a guide block 513, and a guide groove 512 is formed in the mating plate 57. The guide block 513 is movably embedded in the guide groove 512.

[0041] By setting guide block 513 and guide groove 512, the support plate 4 is guided during the movement of the portal frame, ensuring the stability of the movement of the support plate 4 and the portal frame.

[0042] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The bottom outer side of the support column 1 is provided with several insert rods 12 that can be raised and lowered by a sliding mechanism. The base 2 has a through hole for the insert rods 12 to pass through, so that the several insert rods 12 pass through the base 2 and are inserted into the ground through the bottom tip.

[0043] Preferably, two insertion rods 12 can be symmetrically arranged with pointed bottoms, thereby ensuring that the insertion rods 12 can be inserted into the ground, improving the support stability and load-bearing capacity of the steel structure support platform.

[0044] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 4 and attached Figure 5 The sliding mechanism includes a connecting plate 8, a threaded rod 10, and a hexagonal block 11; a mounting cavity 6 is formed at the bottom of the support column 1, the connecting plate 8 horizontally penetrates the mounting cavity 6, and several insert rods 12 are respectively connected to the bottom of the connecting plate 8; a threaded hole is formed in the middle of the connecting plate 8, so that the threaded rod 10 is screwed onto the connecting plate 8, and the threaded rod 10 is rotatably set in the mounting cavity 6 and vertically penetrates the connecting plate 8 through a rotating bearing; the hexagonal block 11 is set at the top of the threaded rod 10.

[0045] When the hexagonal block 11 drives the threaded rod 10 to rotate, the rotation of the threaded rod 10 is converted into linear motion of the connecting plate 8 along the axial direction of the threaded rod 10 through threaded transmission. This causes the connecting plate 8 to descend and allows the insertion rod 12 to be inserted below the ground. At the same time, the insertion rod 12 can be pulled out of the ground by the reverse rotation of the hexagonal block 11. Preferably, the width of the mounting cavity 6 is slightly larger than the width of the connecting plate 8 to prevent the connecting plate 8 from rotating with the threaded rod 10 within the mounting cavity 6.

[0046] Please see the appendix Figure 4 and attached Figure 5 Vertically arranged limiting strips 7 are formed on the inner walls of both sides of the mounting cavity 6, and limiting grooves 9 are formed on both sides of the connecting plate 8. The limiting strips 7 can be slidably embedded in the limiting grooves 9.

[0047] The limiting strip 7 is vertically positioned and can be used to cooperate with the limiting groove 9 to make the connecting plate 8 move more smoothly when moving up or down. Preferably, two limiting strips 7 can be symmetrically arranged, and two limiting grooves 9 can be correspondingly arranged. The cross-sections of the limiting strips 7 and the limiting grooves 9 can adopt matching rectangular structures.

[0048] Please see the appendix Figure 6 The top of the support column 1 has a protrusion 14 and the bottom of the mounting beam 3 has a groove 13. The protrusion 14 can be fitted into the groove 13 so that the mounting beam 3 is fixedly mounted on the top of the support column 1.

[0049] The protrusion 14 and groove 13 enable more accurate and faster connection between the mounting beam 3 and the support column 1.

[0050] Please see the appendix Figure 6 The mounting beam 3 has a mating groove 15 on one side of its bottom, and the support column 1 has a mounting cavity (not shown in the figure) on one side of its top. One end of the L-shaped limiting seat 16 is spring-loaded in the mounting cavity by a spring 17, and the other end of the L-shaped limiting seat 16 extends to the side of the bottom of the mounting beam 3. The other end of the limiting seat 16 has a mating block 18, which can be matched and inserted into the mating groove 15.

[0051] When the limiting seat 16 is pulled away from the mounting beam 3, the spring 17 is compressed and stores force, and the connecting block 18 disengages from the connecting groove 15, facilitating the connection and disassembly between the mounting beam 3 and the support column 1. After the limiting seat 16 is released, the spring force of the spring 17 pulls the limiting seat 16 inward to reset it, allowing the connecting block 18 to insert into the connecting groove 15, which limits the connection between the mounting beam 3 and the support column 1, improving the reliability of the connection between the mounting beam 3 and the support column 1.

[0052] The protrusion 14, groove 13, mating groove 15, and mating block 18 can meet the temporary connection and positioning requirements between the installation beam 3 and the support column 1. In order to ensure the reliability of the support during use, the installation beam 3 and the support column 1 can be welded and fixed.

[0053] Please see the appendix Figure 1 To be continued Figure 6 The extension adjustment method of the present invention is as follows:

[0054] First, pull the limiting seat 16 outward to its limit position. As the limiting seat 16 moves outward, it compresses the spring 17 fitted on the limiting seat 16. Then, align the groove 13 at the bottom of the mounting beam 3 with the protrusion 14 at the top of the support column 1. At this point, the lower surface of the mounting beam 3 is in contact with the surface of the support column 1. Then, release the pulled limiting seat 16. After release, the limiting seat 16 will automatically return to its original position inward by the elastic force of the spring 17 until the connecting block 18 connected to the inner wall of the limiting seat 16 is inserted into the connecting groove 15, thus limiting the mounting beam 3. Finally, weld the mounting beam 3 and the support column 1. The telescopic limiting seat 16 provides auxiliary positioning for the mounting beam 3, preventing the mounting beam 3 from shifting during welding, thereby giving the steel structure support platform an auxiliary positioning structure.

[0055] The starting motor 56 drives one bevel gear of the bevel gear set 511 connected to the output end to rotate synchronously. Under the action of the bevel gear set 511, the connecting rod 510 rotates synchronously with the other bevel gear. Since the surface of the connecting rod 510 is provided with bidirectional threads, and the movable seat 59 and the connecting rod 510 are connected by threads, as the connecting rod 510 rotates, the two movable seats 59 on the connecting rod 510 move simultaneously along the movable cavity 58 in a direction away from each other. The moving movable seats 59 drive the support plate 4 connected above to move outward. At this time, the support plate 4 moves stably inside the guide groove 512 through the guide block 513 connected to it. Since the support plate 4 and the mounting beam 3 are welded together, as the support plate 4 moves outward, it will push the mounting beam 3 and the support column 1 to extend outward synchronously. During the outward movement of the support column 1, it will drive the connecting seat 51 on its inner side to move along the movable groove 52 to both sides of the mounting plate 53. The guide rod 54 set inside the movable groove 52 can ensure the stable movement of the connecting seat 51. Through the cooperation of the connecting rod 510 and the bevel gear set 511, the two support plates 4 can be moved outward according to actual needs to increase the support range of the support platform, thereby enabling the steel structure support platform to have an extended support function.

[0056] If it is necessary to reduce the spacing between a pair of gantry brackets, simply control motor 56 to rotate in the opposite direction. Its working process and principle are the same as those of the above extension process, only the direction of movement is reversed, so it will not be described again here.

[0057] After adjusting the support column 1 to the designated position, place an Allen wrench on the hexagonal block 11 and rotate the hexagonal block 11. The rotating hexagonal block 11 drives the connected threaded rod 10 to rotate synchronously. Since the threaded rod 10 and the connecting plate 8 are connected by threads, the rotation of the threaded rod 10 will cause the outer connecting plate 8 to move downward along the interior of the mounting cavity 6. The downward-moving connecting plate 8 moves stably along the limiting strip 7 through the limiting grooves 9 on both sides. The insertion rod 12 moves with the movement of the connecting plate 8 until the connecting plate 8 moves to its limit position. At the same time, the insertion rods 12 on both sides below the connecting plate 8 pass through the base 2 and are inserted into the ground. Through the mutual cooperation between the threaded rod 10, the hexagonal block 11 and the connecting plate 8, the insertion rods 12 can be moved down and inserted into the ground to provide auxiliary support on both sides of the support column 1, thereby enabling the steel structure support platform to have a stable support function.

[0058] When it is necessary to remove the plug rod 12, the hexagonal block 11 is rotated in the opposite direction to move the connecting plate 8 upward, thereby moving the plug rod 12 upward and pulling it out of the ground.

[0059] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A steel structure support platform with extension support function, characterized in that: It includes support columns (1), base (2), mounting beam (3), support plate (4) and extension assembly (5); the mounting beam (3) is erected on the top of the two support columns (1) to form a portal frame, the pair of portal frames are arranged opposite each other along the extension direction, and the extension assembly (5) is set inside the two support columns (1) of the pair of portal frames, so that the pair of portal frames can move closer or further away from each other through the extension assembly (5); the bottom of each support column (1) is fixedly installed with a base (2), the top of each support column (1) is provided with a mounting beam (3), and each mounting beam (3) is connected with a support plate (4). The bottom surface of the support plate (4) on the pair of portal frames slides on the extension assembly (5), and the top surface of the support plate (4) supports the bottom of the steel structure; The extension component (5) includes a connecting seat (51), a mounting plate (53), a support seat (55), a docking plate (57), and a transmission mechanism; one end of a pair of connecting seats (51) is respectively connected to the upper inner side of the two support columns (1) of a pair of portal brackets, and the mounting plate (53) is slidably inserted into the other end of the pair of connecting seats (51); a pair of support seats (55) are respectively spaced between the middle of the mounting plate (53) and the middle of the docking plate (57), and the top of the docking plate (57) slides against the bottom surface of the support plate (4); the transmission mechanism is set on the mounting plate (53) and the docking plate (57), and the transmission mechanism is connected to the pair of support plates (4); The transmission mechanism includes a motor (56), a movable seat (59), a connecting rod (510), and a bevel gear set (511). The motor (56) is mounted on the mounting plate (53) and located between a pair of support seats (55). The output shaft of the motor (56) is coaxially fixed to one of the bevel gears of the bevel gear set (511). A movable cavity (58) is formed in the mating plate (57). The two ends of the connecting rod (510) are rotatably mounted in the movable cavity (58). The connecting rod (510) is coaxially fixed to the other bevel gear of the bevel gear set (511). The bevel gear set (511) is located in the middle of the movable cavity (58). Two external threads with opposite directions are symmetrically formed on the connecting rod (510). A threaded through hole is formed in the movable seat (59), so that the two movable seats (59) are mounted in the movable cavity (58) and matched and screwed onto the connecting rod (510). The tops of the two movable seats (59) are fixedly connected to a pair of support plates (4).

2. The steel structure support platform with extension support function according to claim 1, characterized in that: The cross-section of the movable cavity (58) is a trapezoidal structure that is narrow at the top and wide at the bottom, and the movable seat (59) is a trapezoidal structure that matches the movable cavity (58).

3. The steel structure support platform with extension support function according to claim 1, characterized in that: The connecting seat (51) has a movable groove (52) formed inside. The two ends of the mounting plate (53) are respectively movably inserted into the movable groove (52) of a pair of connecting seats (51). A guide rod (54) is provided in the movable groove (52). One end of the mounting plate (53) located in the movable groove (52) has a bent part with a through hole, so that the guide rod (54) passes through the through hole and through the bent part.

4. The steel structure support platform with extension support function according to claim 1, characterized in that: The bottom of the support plate (4) is provided with a guide block (513), and a guide groove (512) is formed in the mating plate (57). The guide block (513) is movably embedded in the guide groove (512).

5. The steel structure support platform with extension support function according to claim 1, characterized in that: The bottom outer side of the support column (1) is provided with several insert rods (12) that can be raised and lowered by a sliding mechanism. The base (2) has a through hole for the insert rods (12) to pass through, so that the several insert rods (12) pass through the base (2) and are inserted into the ground through the bottom tip.

6. The steel structure support platform with extension support function according to claim 5, characterized in that: The sliding mechanism includes a connecting plate (8), a threaded rod (10), and a hexagonal block (11); the bottom of the support column (1) forms an installation cavity (6), the connecting plate (8) passes horizontally through the installation cavity (6), and several insert rods (12) are respectively connected to the bottom of the connecting plate (8); a threaded hole is formed in the middle of the connecting plate (8), so that the threaded rod (10) is matched and screwed onto the connecting plate (8), the threaded rod (10) is rotatably set in the installation cavity (6) and passes vertically through the connecting plate (8); the hexagonal block (11) is set on the top of the threaded rod (10).

7. The steel structure support platform with extension support function according to claim 6, characterized in that: Vertically arranged limiting strips (7) are formed on the inner walls of both sides of the mounting cavity (6), and limiting grooves (9) are formed on both sides of the connecting plate (8). The limiting strips (7) can be slidably embedded in the limiting grooves (9).

8. The steel structure support platform with extension support function according to claim 1, characterized in that: The top of the support column (1) is formed with a protrusion (14), and the bottom of the mounting beam (3) is formed with a groove (13). The protrusion (14) can be fitted into the groove (13) so that the mounting beam (3) is fixedly mounted on the top of the support column (1). A mating groove (15) is formed on one side of the bottom of the mounting beam (3), and a mounting cavity is formed on one side of the top of the support column (1). One end of the L-shaped limiting seat (16) is spring-loaded in the mounting cavity by a spring (17), and the other end of the L-shaped limiting seat (16) extends to the side of the bottom of the mounting beam (3). A mating block (18) is formed on the other end of the limiting seat (16), and the mating block (18) can be matched and inserted into the mating groove (15).

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