A type of double-column climbing steel column

Abstract

This application relates to a double-column climbing steel column, belonging to the field of building engineering technology. The climbing steel column includes two steel columns, an upper climbing rod, a lower climbing rod, and a hydraulic system. The bottom ends of the two steel columns are mounted on the core tube wall, and the two steel columns are parallel to each other. Several climbing shoe holes are spaced apart along the height direction of the two steel columns. Upper climbing shoes that engage with the climbing shoe holes are provided at both ends of the upper climbing rod, and lower climbing shoes that engage with the climbing shoe holes are provided at both ends of the lower climbing rod. The upper and lower climbing rods are respectively connected to the hydraulic system. This application, through the connection of the two steel columns, the upper climbing rod, and the lower climbing rod, makes the overall support structure more stable. Furthermore, the hydraulic system allows the upper and lower climbing rods to move upwards, facilitating a more stable upward climb of the steel platform and ensuring the construction safety of the overall climbing steel platform.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a double-column climbing steel column. Background Technology

[0002] Currently, in the construction of core tubes for high-rise and super high-rise buildings, steel platform formwork systems are often used. A steel platform formwork system includes a steel platform, a support system, a climbing system, and a scaffolding system. The support system includes a support tube frame, which is fixedly installed below the steel platform. The climbing system includes steel columns, upper climbing shoes, lower climbing shoes, and a hydraulic system. The upper climbing shoes are fixedly connected to the steel platform, and both the upper and lower climbing shoes are connected to the hydraulic system. The steel columns have several climbing shoe holes spaced along their height, and the lower end of the steel column connects to the top of the completed core tube wall.

[0003] During the standard floor construction of the core tube, the steel columns of the climbing system are first fixed to the top of the completed core tube wall. Then, the telescopic brackets at the bottom of the support frame are retracted, and the hydraulic cylinders are activated, causing the upper and lower climbing shoes to alternately climb along the steel column until the steel platform reaches a predetermined height. Next, the telescopic brackets are inserted into the pre-reserved holes in the core tube wall to fix the steel platform. Then, the connection between the steel column and the top of the core tube wall is released, and the upper and lower climbing shoes are alternately pulled back using the climbing shoe holes on the steel column and the hydraulic cylinders until the steel column reaches the predetermined height. Then, the reinforcing steel is tied. Then, the formwork system is installed. Finally, the concrete for the core tube wall is poured and cured, preparing for the construction of the next floor structure of the next core tube.

[0004] However, during construction, it was discovered that the instability of the steel columns placed on top of the core tube wall would affect the climbing of the steel platform, thus posing a certain risk to the construction. Summary of the Invention

[0005] To effectively improve construction safety, this application provides a double-column climbing steel column.

[0006] The purpose of this application is to provide a double-column climbing steel column, which adopts the following technical solution:

[0007] A double-column climbing steel column includes two steel columns, an upper climbing rod, a lower climbing rod, and a hydraulic system. The bottom ends of the two steel columns are mounted on the core tube wall, and the two steel columns are parallel to each other. A plurality of climbing shoe holes are spaced apart along the height direction of the two steel columns. The two ends of the upper climbing rod are provided with upper climbing shoes that are inserted and engaged with the climbing shoe holes, and the two ends of the lower climbing rod are provided with lower climbing shoes that are inserted and engaged with the climbing shoe holes. The upper climbing rod and the lower climbing rod are respectively connected to the hydraulic system.

[0008] By adopting the above technical solution, the connection of two steel columns, an upper climbing rod, and a lower climbing rod makes the overall support structure more stable; and by using a hydraulic system to move the upper and lower climbing rods upward, it is easier to climb the steel platform more stably, thus ensuring the construction safety of the overall climbing steel platform.

[0009] Optionally, it also includes a reserved groove on the core tube wall, and a fixed seat that is inserted into the reserved groove is fixedly connected to the bottom of the steel column; a sliding groove is opened on the side of the fixed seat, and a pressing block is slidably connected in the sliding groove; a power component is provided in the fixed seat to drive the pressing block to move so that the pressing block presses against the wall of the reserved groove.

[0010] By adopting the above technical solution, when the fixing seat is inserted into the reserved slot, the power component drives the clamping block to move towards the reserved slot, and one end of the clamping block presses against the wall of the reserved slot, thereby reducing the possibility of the fixing seat falling out of the reserved slot, making it easier to fix the steel column to the core tube wall, and effectively improving the stability of the overall support mechanism.

[0011] Optionally, the power assembly includes a screw, a nut, and a power component. The fixed base has a guide groove. One end of the nut is fixedly connected to a guide block that slides and engages with the guide groove. The screw and the nut are threaded together. The power component is used to drive the screw to rotate. The circumferential surface of the nut is a conical surface, and one end of the clamping block abuts against the conical surface of the nut.

[0012] By adopting the above technical solution, the screw is driven to rotate by the power component. The rotational torque of the screw will drive the nut to move axially. Then, the circumferential force of the nut will be transmitted to the clamping block through the conical surface, so that the end of the clamping block presses against the wall of the reserved groove, thereby fixing the steel column to the core tube wall.

[0013] Optionally, the abutment block is provided with an unlocking spring, one end of which is fixedly connected to the wall of the sliding groove, and the other end of which is fixedly connected to the abutment block.

[0014] By adopting the above technical solution, the end of the clamping block is made to abut against the conical surface of the nut by using the unlocking spring. When the power component drives the screw to rotate in the opposite direction, the other end of the clamping block can be easily retracted into the sliding groove, thereby making it easier to remove the fixing seat from the reserved groove.

[0015] Optionally, the steel column includes a first column and a second column, the fixing seat is fixedly connected to one end of the first column, the other end of the first column is provided with a connecting groove, one end of the second column is fixedly connected with a connecting block that is inserted into the connecting groove, and the first column is provided with a limiting mechanism for restricting the connecting block in the connecting groove.

[0016] By adopting the above technical solution, the steel column is composed of two sections: the first column and the second column. When the steel column is pulled back, the second column can be disassembled from the first column, thus avoiding the normal use of the tower crane on the steel platform due to the excessive length of the steel column. By using the connection block and the connection groove to cooperate, and then using the limiting mechanism to restrict the connection block in the connection groove, the possibility of the connection block falling out of the connection groove is reduced, making the connection between the second column and the first column more stable.

[0017] Optionally, the limiting mechanism includes a limiting block and a limiting groove. A rotating cavity communicating with the connecting groove is provided on the first column. The limiting block is rotatably connected in the rotating cavity. The limiting groove is provided on the side of the connecting block, and one end of the limiting block is inserted into the limiting groove. A torsion spring is sleeved on the rotating shaft of the limiting block. A driving component for driving the end of the limiting block to separate from the limiting groove is provided on the first column.

[0018] By adopting the above technical solution, when the connecting block is inserted into the connecting groove, the end of the limiting block will be inserted into the limiting groove under the action of the torsion spring, thereby reducing the possibility of the connecting block falling out of the connecting groove; the driving component is used to separate the end of the limiting block from the limiting groove, making it easier to pull the connecting block out of the connecting groove, thus achieving the purpose of removing the second column from the first column.

[0019] Optionally, the driving assembly includes a push rod and a linkage rod. The push rod is slidably connected to the first column and is arranged along the height direction of the first column. One end of the push rod abuts against the other end of the limiting block, and the other end of the push rod is hinged to one end of the linkage rod, and the other end of the linkage rod is hinged to the guide block.

[0020] By adopting the above technical solution, the movement of the guide block on the fixed seat pushes the push rod upward via the linkage rod, so that the top end of the push rod can abut against the other end of the limiting block, thereby separating the end of the limiting block away from the push rod from the limiting groove.

[0021] Optionally, a return spring is provided on the push rod, with one end of the return spring fixedly connected to the push rod and the other end of the return spring fixedly connected to the first column.

[0022] By adopting the above technical solution, the push rod is moved downward by the return spring, making it easier for one end of the limiting block to be inserted into the limiting groove, so as to better limit the connecting block in the connecting groove.

[0023] Optionally, the driving assembly includes a driving cylinder, which is fixedly connected to the first column, and the piston rod of the driving cylinder abuts against the other end of the limiting block.

[0024] By adopting the above technical solution, the piston rod of the driving cylinder abuts against the other end of the limiting block, which facilitates the rotation of the limiting block, thereby causing the end of the limiting block away from the push rod to separate from the limiting groove.

[0025] In summary, this application includes at least the following beneficial technical effects:

[0026] 1. The connection of two steel columns, an upper climbing rod, and a lower climbing rod makes the overall support structure more stable; the hydraulic system is then used to move the upper and lower climbing rods upward, making it easier to climb the steel platform more stably, thus ensuring the construction safety of the overall climbing steel platform.

[0027] 2. The steel column consists of two sections: the first column and the second column. When the steel column is pulled back, the second column can be detached from the first column, thus avoiding interference with the normal operation of the tower crane on the steel platform due to the excessive length of the steel column. By using a connecting block and a connecting groove in combination, and by using a limiting mechanism to restrict the connecting block within the connecting groove, the possibility of the connecting block falling out of the connecting groove is reduced, making the connection between the second column and the first column more stable. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a double-column climbing steel column in an embodiment of this application;

[0029] Figure 2 This is a partial connection diagram of an embodiment of this application, mainly used to show the connection diagram of the steel column, the upper climbing rod, the lower climbing rod and the hydraulic system;

[0030] Figure 3 This is a partial structural cross-sectional view of an embodiment of this application, mainly used to illustrate the connection between the fixed base, the clamping block, and the power assembly;

[0031] Figure 4 This is a partial structural cross-sectional view of an embodiment of this application, mainly used as a schematic diagram for the connection between the first column and the second column;

[0032] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0033] Explanation of reference numerals in the attached drawings: 1. Steel column; 101. First column; 102. Second column; 2. Upper climbing rod; 3. Lower climbing rod; 4. Hydraulic system; 5. Climbing shoe hole; 6. Upper climbing shoe; 7. Lower climbing shoe; 8. Reserved slot; 9. Fixed seat; 10. Sliding groove; 11. Clamping block; 12. Power component; 121. Screw; 122. Nut; 123. Power component; 13. Guide groove; 14. Guide block; 15. Unlocking spring; 16. Connecting groove; 17. Connecting block; 18. Restriction mechanism; 181. Restriction block; 182. Restriction groove; 183. Torsion spring; 19. Rotation cavity; 20. Drive component; 201. Push rod; 202. Linkage rod; 21. Return spring. Detailed Implementation

[0034] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-5 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0035] This application discloses a double-column climbing steel column. (Refer to...) Figure 1 and Figure 2 The climbing steel column includes two steel columns 1 and a reserved slot 8 on the core tube wall. The two steel columns 1 are parallel to each other and vertically distributed on the core tube wall. The bottom end of the steel column 1 is fixedly connected to the fixing seat 9 by welding. The bottom of the fixing seat 9 is inserted into the reserved slot 8, that is, the bottom ends of the two steel columns 1 are installed on the core tube wall. Several climbing shoe holes 5 are opened on the side of the steel column 1, and the climbing shoe holes 5 are distributed at intervals along the height direction of the steel column 1.

[0036] Reference Figure 1 and Figure 2To lift the steel platform, the climbing steel column also includes an upper climbing rod 2, a lower climbing rod 3, and a hydraulic system 4. Both the upper climbing rod 2 and the lower climbing rod 3 are horizontally positioned and located between two steel columns 1, meaning they are perpendicular to the steel columns 1. Furthermore, the upper climbing rod 2 is positioned above the lower climbing rod 3. Upper climbing shoes 6 are fixedly connected to both ends of the upper climbing rod 2, and these shoes engage with climbing shoe holes 5 on the two steel columns 1. Similarly, lower climbing shoes 7 are fixedly connected to both ends of the lower climbing rod 3, and these shoes engage with climbing shoe holes 5 on the two steel columns 1. The upper climbing rod 2 and the lower climbing rod 3 are respectively connected to the hydraulic system 4. The hydraulic system 4 uses climbing cylinders. The housing of the climbing cylinder is bolted to the lower climbing rod 3, and the piston rod of the climbing cylinder is bolted to the upper climbing rod 2. When the steel platform is climbing, it can be fixedly connected to the lower climbing rod 3, and the upward movement of the lower climbing rod 3 causes the steel platform to climb upward.

[0037] In this embodiment, firstly, the lower climbing shoe 7 is inserted into the climbing shoe hole 5, so that the lower climbing rod 3 is fixedly connected between the two steel columns 1 and remains stationary, while the upper climbing shoe 6 is separated from the climbing shoe hole 5. The climbing cylinder is then activated, causing the upper climbing rod 2 to move upward. Secondly, the upper climbing shoe 6 is inserted into the climbing shoe hole 5, so that the upper climbing rod 2 is fixedly connected between the two steel columns 1 and remains stationary, while the lower climbing shoe 7 is separated from the climbing shoe hole 5. The climbing cylinder is then activated, causing the lower climbing rod 3 to move upward. This process is repeated, causing the upper and lower climbing rods 3 to climb alternately along the steel columns 1 until they drive the steel platform to climb to a predetermined height.

[0038] Reference Figure 2 and Figure 3 To improve the support effect of the steel column 1, a sliding groove 10 is provided on the side of the fixing seat 9. A pressing block 11 is slidably connected in the sliding groove 10. A power component 12 is installed in the fixing seat 9. The power component 12 is used to drive the pressing block 11 to move so that the pressing block 11 presses against the groove wall of the reserved groove 8. There are four sliding grooves 10 and four pressing blocks. The four sliding grooves 10 are located on the four sides of the fixing seat 9. When the fixing seat 9 is inserted into the reserved groove 8, the power component 12 drives the pressing block 11 to move towards the reserved groove 8, so that one end of the pressing block 11 presses against the groove wall of the reserved groove 8. This reduces the possibility of the fixing seat 9 falling out of the reserved groove 8, making it easier to fix the steel column 1 to the core tube wall and effectively improving the stability of the overall support mechanism.

[0039] Reference Figure 2 and Figure 3To facilitate the pressing of the four abutment blocks against the wall of the reserved groove 8, the power assembly 12 includes a screw 121, a nut 122, and a power component 123. A guide groove 13 is provided on the fixed base 9. A guide block 14 is fixedly connected to the top of the nut 122 by welding. The guide block 14 is square-shaped and slides in conjunction with the guide groove 13. The screw 121 and nut 122 are threaded together, and the power component 123 is connected to the screw 121. The circumferential surface of the nut 122 is conical, and one end of the abutment block 11 abuts against the conical surface of the nut 122. The power component 123 is a power motor. The housing of the power motor is fixedly connected to the fixed base 9 with screws, and the output shaft of the power motor is fixedly connected to the screw 121 by a key connection. A power cavity is provided inside the fixed base 9 for the nut 122 to move up and down, and the power cavity is connected to both the guide groove 13 and the sliding groove 10.

[0040] In this embodiment, the screw 121 is rotated by starting the power motor. The rotational torque of the screw 121 will drive the nut 122 to move axially, that is, the nut 122 moves up and down in the power cavity. Then, the circumferential force of the nut 122 is transmitted to the clamping block 11 through the conical surface, so that the four clamping blocks 11 are far apart from each other, so as to achieve the purpose of pressing the end of the clamping block 11 against the wall of the reserved groove 8, thereby fixing the steel column 1 to the core tube wall.

[0041] Reference Figure 2 and Figure 3 To facilitate the quicker removal of the fixing seat 9 from the reserved slot 8, an unlocking spring 15 is installed on the clamping block 11. One end of the unlocking spring 15 is welded to the wall of the sliding groove 10, and the other end is welded to the clamping block 11. The unlocking spring 15 ensures that the end of the clamping block 11 always abuts against the conical surface of the nut 122. When the power motor drives the screw 121 to rotate in the opposite direction, the other end of the clamping block 11 retracts into the sliding groove 10, thus making it easier to remove the fixing seat 9 from the reserved slot 8.

[0042] Reference Figure 4 and Figure 5To avoid the steel column 1 being too long and affecting the normal use of the tower crane on the steel platform, the steel column 1 includes a first column 101 and a second column 102. Climbing shoe holes 5 are respectively opened in the first column 101 and the second column 102, and several climbing shoe holes 5 are spaced apart along the height direction of the first column 101 and the second column 102. The fixing seat 9 is fixedly connected to the bottom end of the first column 101 by welding. The top end of the first column 101 is provided with a connecting groove 16. The bottom end of the second column 102 is integrally formed with a connecting block 17, which is inserted into the connecting groove 16. A limiting mechanism 18 is installed on the first column 101 to limit the connecting block 17 within the connecting groove 16.

[0043] In this embodiment, the steel column 1 is composed of two sections, a first column 101 and a second column 102. When the steel column 1 is pulled back, the second column 102 can be disassembled from the first column 101, thereby avoiding the impact of the steel column 1 being too long on the normal use of the tower crane on the steel platform. The connecting block 17 and the connecting groove 16 cooperate, and the limiting mechanism 18 restricts the connecting block 17 in the connecting groove 16, thereby reducing the possibility of the connecting block 17 falling out of the connecting groove 16, making the connection between the second column 102 and the first column 101 more stable.

[0044] Reference Figure 4 and Figure 5 To reduce the likelihood of the connecting block 17 detaching from the connecting groove 16, the limiting mechanism 18 includes a limiting block 181 and a limiting groove 182. A rotating cavity 19 is formed on the first column 101, and the rotating cavity 19 communicates with the connecting groove 16. The limiting block 181 is rotatably connected to the rotating cavity 19, and the limiting groove 182 is formed on the side of the connecting block 17, with one end of the limiting block 181 engaging with the limiting groove 182. A torsion spring 183 is sleeved on the rotating shaft of the limiting block 181, with one end of the torsion spring 183 fixedly connected to the limiting block 181 and the other end fixedly connected to the cavity wall of the rotating cavity 19. When the connecting block 17 is inserted into the connecting groove 16, the end of the limiting block 181 will be inserted into the limiting groove 182 under the action of the torsion spring 183, thereby reducing the likelihood of the connecting block 17 detaching from the connecting groove 16.

[0045] Reference Figure 4 and Figure 5To facilitate the quicker removal of the second column 102 from the first column 101, a driving assembly 20 is installed on the first column 101. The driving assembly 20 is used to drive the end of the limiting block 181 to separate from the limiting groove 182. The driving assembly 20 includes a push rod 201 and a linkage rod 202. The push rod 201 is slidably connected to the first column 101 and is arranged along the height direction of the first column 101. One end of the push rod 201 abuts against the other end of the limiting block 181, and the other end of the push rod 201 is hinged to one end of the linkage rod 202. The other end of the linkage rod 202 is hinged to the guide block 14.

[0046] In this embodiment, the guide block 14 moves on the fixed base 9, and the linkage rod 202 pushes the push rod 201 upward, so that the top end of the push rod 201 abuts against the other end of the limiting block 181, thereby separating the end of the limiting block 181 away from the push rod 201 from the limiting groove 182, making it easier to pull the connecting block 17 out of the connecting groove 16, and achieving the purpose of removing the second column 102 from the first column 101.

[0047] Reference Figure 4 and Figure 5 A return spring 21 is installed on the push rod 201. One end of the return spring 21 is fixedly connected to the push rod 201, and the other end is fixedly connected to the first column 101. The return spring 21 causes the push rod 201 to move downward, making it easier for one end of the limiting block 181 to be inserted into the limiting groove 182, so as to better limit the connecting block 17 in the connecting groove 16.

[0048] In other embodiments, the driving assembly 20 includes a driving cylinder, which is fixedly connected to the first column 101. The piston rod of the driving cylinder abuts against the other end of the limiting block 181. By having the piston rod of the driving cylinder abut against the other end of the limiting block 181, the limiting block 181 can rotate, thereby causing the end of the limiting block 181 away from the push rod 201 to separate from the limiting groove 182.

[0049] The implementation principle of a double-column climbing steel column in this application embodiment is as follows: During the construction of the standard floor of the core tube, the fixing columns of the two first columns 101 are first inserted into the reserved holes, and the power motor is started so that one end of the four clamping blocks 11 presses against the groove wall of the reserved groove 8, thereby fixing the first columns 101 to the core tube wall. Then, the connecting block 17 of the second column 102 is inserted into the connecting groove 16 of the first column 101, and the end of the limiting block 181 is inserted into the limiting groove 182 under the action of the torsion spring 183. Finally, the climbing cylinder of the hydraulic system 4 is started, so that the upper climbing shoe 6 and the lower climbing shoe 7 climb alternately along the two steel columns 1, so that the upper climbing rod 2 and the lower climbing rod 3 move upward between the two steel columns 1, which facilitates the more stable upward climbing of the steel platform fixed to the lower climbing rod 3, thereby ensuring the construction safety of the overall climbing steel platform.

[0050] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-column climbing steel column, characterized in that, It includes two steel columns (1), an upper climbing rod (2), a lower climbing rod (3), and a hydraulic system (4). The bottom ends of the two steel columns (1) are set on the core tube wall, and the two steel columns (1) are parallel to each other. Several climbing shoe holes (5) are spaced apart along the height direction of the two steel columns (1). The two ends of the upper climbing rod (2) are provided with upper climbing shoes (6) that are inserted and matched with the climbing shoe holes (5). The two ends of the lower climbing rod (3) are provided with lower climbing shoes (7) that are inserted and matched with the climbing shoe holes (5). The upper climbing rod (2) and the lower climbing rod (3) are respectively connected to the hydraulic system (4). It also includes a reserved groove (8) on the core tube wall, and a fixed seat (9) that is inserted into the reserved groove (8) is fixedly connected to the bottom of the steel column (1); a sliding groove (10) is opened on the side of the fixed seat (9), and a pressing block (11) is slidably connected in the sliding groove (10); a power component (12) is provided in the fixed seat (9) for driving the pressing block (11) to move so that the pressing block (11) presses against the groove wall of the reserved groove (8); The power assembly (12) includes a screw (121), a nut (122), and a power component (123). The fixed base (9) has a guide groove (13). One end of the nut (122) is fixedly connected to a guide block (14) that slides with the guide groove (13). The screw (121) and the nut (122) are threaded together. The power component (123) is used to drive the screw (121) to rotate. The circumferential surface of the nut (122) is a conical surface, and one end of the clamping block (11) abuts against the conical surface of the nut (122).

2. The double-column climbing steel column according to claim 1, characterized in that, The clamping block (11) is provided with an unlocking spring (15), one end of which is fixedly connected to the groove wall of the sliding groove (10), and the other end of which is fixedly connected to the clamping block (11).

3. A double-column climbing steel column according to claim 1, characterized in that, The steel column (1) includes a first column (101) and a second column (102). The fixing seat (9) is fixedly connected to one end of the first column (101). The other end of the first column (101) is provided with a connecting groove (16). One end of the second column (102) is fixedly connected with a connecting block (17) that is inserted into the connecting groove (16). The first column (101) is provided with a limiting mechanism (18) for restricting the connecting block (17) in the connecting groove (16).

4. A double-column climbing steel column according to claim 3, characterized in that, The limiting mechanism (18) includes a limiting block (181) and a limiting groove (182). The first column (101) has a rotating cavity (19) that communicates with the connecting groove (16). The limiting block (181) is rotatably connected in the rotating cavity (19). The limiting groove (182) is opened on the side of the connecting block (17), and one end of the limiting block (181) is inserted into the limiting groove (182). A torsion spring (183) is sleeved on the rotating shaft of the limiting block (181). The first column (101) is provided with a driving component (20) for driving the end of the limiting block (181) to separate from the limiting groove (182).

5. A double-column climbing steel column according to claim 4, characterized in that, The driving assembly (20) includes a push rod (201) and a linkage rod (202). The push rod (201) is slidably connected to the first column (101) and is arranged along the height direction of the first column (101). One end of the push rod (201) abuts against the other end of the limiting block (181), and the other end of the push rod (201) is hinged to one end of the linkage rod (202). The other end of the linkage rod (202) is hinged to the guide block (14).

6. A double-column climbing steel column according to claim 5, characterized in that, A return spring (21) is provided on the push rod (201). One end of the return spring (21) is fixedly connected to the push rod (201), and the other end of the return spring (21) is fixedly connected to the first column (101).

7. A double-column climbing steel column according to claim 4, characterized in that, The driving assembly (20) includes a driving cylinder, which is fixedly connected to the first column (101), and the piston rod of the driving cylinder abuts against the other end of the limiting block (181).

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