Temporary anti-seismic limiting device for segmented installation of large steel structure and working method thereof

Abstract

The application relates to a temporary anti-seismic limiting device for segmented installation of a large steel structure and a working method thereof, which comprises a stand column and a lifting column, the lifting column is slidably arranged in the stand column, a column base is arranged outside the bottom of the stand column, a bottom limiting base is arranged on the top of the lifting column, and a plurality of first limiting columns are elastically arranged on the bottom limiting base; in the stand column, a winding structure composed of a first motor, a rotating shaft, a bevel gear and a connecting rope is arranged, so that the lifting adjustment of a mounting disc and a counterweight ball arranged on the mounting disc is realized; by replacing counterweight balls with different numbers or masses, the inherent frequency of a damper can be adjusted, so that the inherent frequency is tuned with the main vibration frequency of the steel structure; vibration energy is consumed through inertial reverse swinging, so that the active damping effect is achieved; the traditional mechanical limiting is combined with the advanced tuned mass damper principle, so that not only the displacement of the steel structure can be constrained, but also the vibration energy can be actively consumed, and the anti-seismic and anti-wind capacity under the temporary support state is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of steel structure installation technology, and in particular to a temporary seismic limiting device for segmented installation of large steel structures and its working method. Background Technology

[0002] In the construction of large-scale steel structure projects (such as stadiums, airport terminals, super high-rise buildings, and large bridges), the structure typically needs to be divided into several segments or units for hoisting and installation. After a segment is hoisted into place but before it is permanently connected by welding or high-strength bolts, that segment is in an unstable temporary state. During this stage, the structure has poor stability and is extremely sensitive to wind loads, construction loads, and seismic forces, posing significant safety risks.

[0003] To ensure safety during this phase, temporary supports or limiting devices are traditionally used. However, these methods have the following main problems and shortcomings: Disadvantages of rigid restraint: The most common temporary restraint devices use rigid supports or blocks. Although such devices can provide a certain degree of restraint, they lack flexibility and buffering capacity. Under dynamic loads (such as wind vibration or earthquake), the steel structure segments will sway and are very likely to collide hard with the rigid restraint devices. This may not only damage the segment interfaces or temporary connectors of the steel structure, but also generate huge instantaneous impact forces in the structure, which may lead to local structural instability or even damage. Lack of effective damping mechanisms: Traditional temporary support systems are designed primarily for static stability, and their function is limited to limiting, i.e. preventing excessive displacement of the structure. They do not have the ability to consume or attenuate external input energy (such as seismic energy). When faced with dynamic loads, the segmental swaying of the structure can only be attenuated by its own material internal resistance, with minimal effect. The swaying lasts for a long time, seriously affecting construction accuracy and safety, and may cause cumulative damage to the installed parts. Poor adaptability and adjustability, poor adaptability to structural shape: The bottom or sides of steel structure segments are often uneven, and traditional rigid limiting devices are difficult to achieve full-area tight fit, which can easily cause point contact or line contact, resulting in stress concentration. Low versatility: The size, shape and weight of different projects or different sections of the same project vary greatly. Existing temporary devices are mostly customized for specific working conditions and lack convenient height and width adjustment mechanisms, resulting in low turnover rate and increased construction costs. Insufficient safety redundancy: Most existing devices do not consider safety redundancy or failure protection mechanisms under extreme overload conditions. Once the load exceeds the design value, the device itself may suffer brittle failure, triggering a chain reaction with unimaginable consequences. Summary of the Invention

[0004] The present invention addresses the problem of providing a temporary seismic limiting device for segmented installation of large steel structures and its working method, thereby resolving the aforementioned technical issues.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A temporary seismic limiting device for segmented installation of a large steel structure includes a column and a lifting column. The lifting column is slidably installed inside the column. A column base is provided on the outer side of the bottom of the column. A bottom limiting seat is installed on the top of the lifting column. Several first limiting columns are elastically installed on the bottom limiting seat. Two side limiting seats are slidably installed on the bottom limiting seat, and several second limiting columns are elastically installed on opposite sides of the two side limiting seats. The lifting column is equipped with several rollers on its bottom side and guide wheels are installed around the top of the lifting column. Each guide wheel is equipped with a connecting rope. One end of each of the connecting ropes is connected to a mounting plate inside the column. A stud is installed on the mounting plate, and the stud passes through a counterweight ball and is connected to a second nut.

[0006] Preferably, the column has mounting grooves on two opposite sides of its exterior, and a number of bolt posts are provided on two opposite sides of the lifting column, with the bolt posts passing through the mounting grooves and connected to the first nut.

[0007] Preferably, hydraulic cylinders are installed on the other two opposite sides of the outside of the column, and the extension and retraction ends of the hydraulic cylinders are connected to the bottom side of the bottom limit seat.

[0008] Preferably, a rectangular frame is provided on the outer side of the bottom of the column, and a rotating shaft is rotatably installed in the rectangular frame and the shaft seat. The two ends of the rotating shaft are respectively equipped with bevel teeth, and the bevel teeth at the ends of adjacent rotating shafts mesh with each other. A baffle is symmetrically installed in the middle of the rotating shaft, and the middle of the rotating shaft is wound and connected to the other end of the connecting rope. A first motor is installed on the rectangular frame, and the output end of the first motor is connected to one of the rotating shafts.

[0009] Preferably, the mounting plate has several slots at equal angles, and several first springs are installed in the slots, with the first springs connected to the anti-collision blocks.

[0010] Preferably, the bottom limit seat has symmetrical adjustment slots on its top, and a second motor is installed on the side wall of the bottom limit seat. The output end of the second motor is installed with a threaded rod in the adjustment slot. The two ends of the threaded rod have opposite thread directions, and the two ends of the threaded rod are respectively threadedly connected to the slider at the bottom of the side limit seat.

[0011] Preferably, the bottom limiting seat and the side limiting seat have several air chambers inside, a second spring is installed in each air chamber and the second spring is connected to the piston, the piston in the bottom limiting seat is connected to the first limiting post and the piston in the side limiting seat is connected to the second limiting post.

[0012] Preferably, each horizontal air chamber of the bottom limiting seat is connected by an air passage, and each vertical air chamber of the side limiting seat is connected by an air passage. Several sealing posts are rotatably installed inside the bottom limiting seat and the side limiting seat. Several air holes are opened on the sealing posts, and the air holes match the air passages. Several sealing rings are fitted on the outside of the sealing posts, and the sealing rings and air holes are staggered.

[0013] Preferably, a transmission box is installed on both the side wall of the bottom limit seat and the top side of the side limit seat. A transmission shaft is installed inside the transmission box at the end of the sealing column. Two chain teeth are installed on the transmission shaft. The chain teeth on adjacent transmission shafts are connected by a chain, and the chains are staggered. A third motor is installed on the transmission box, and the output end of the third motor is connected to the transmission shaft.

[0014] A method for operating a temporary seismic limiting device for segmented installation of a large steel structure, the specific operating steps of which are as follows: Step 1: Loosen the first nut. The hydraulic cylinder extends and retracts to raise and lower the lifting column. When the lifting column moves down until the bottom roller contacts the ground, it is easy to move the entire device. The lifting column moves up and the first limit post contacts the steel structure. As the lifting column continues to move up, the first limit post moves in the air chamber and compresses the second spring. At this time, the first limit post contacts and limits different parts of the bottom side of the steel structure. The second motor drives the threaded rod to rotate. The slider connected to the threaded rod moves in the adjustment groove until the second limit post of the side limit seat contacts the steel structure. As the side limit seat continues to move, the second limit post moves in the air chamber and compresses the second spring. At this time, the second limit post contacts and limits different parts of the side wall of the steel structure. Step 2: The third motor drives one of the drive shafts to rotate, and through the transmission of the chain teeth and chain, it drives the sealing column to rotate. When the air hole on the sealing column corresponds to the air passage, the air chamber is connected to the outside through the air passage and air hole, which facilitates the movement of the piston in the air chamber. When the air hole on the sealing column is intersected with the air passage, the air chamber is in a closed state, which realizes the position limitation of the piston. Step 3: Based on the installation height of the columns and lifting columns, the first motor drives one of the rotating shafts to rotate. Through bevel gear meshing, the connecting rope is wound up and down. Guided by the guide wheel, the installation plate and counterweight ball are raised and lowered. The height of the counterweight ball is adjusted, and the counterweight ball is installed on the stud on the installation plate. The second nut is unscrewed to facilitate the installation of counterweight balls of different masses and quantities on the stud. The vibration of the steel structure is transmitted to the device. Due to inertia, the suspended counterweight ball tends to remain stationary. The shaking of the device will cause the counterweight ball to swing in the opposite direction relative to the columns and lifting columns. When the counterweight ball swings, it consumes the energy of the building's shaking, playing a shock absorption role. The first spring and anti-collision block also play an impact buffering role.

[0015] The beneficial effects of this invention are: the structure consisting of a column, a lifting column, a hydraulic cylinder and a first nut realizes flexible adjustment and locking of the device height, which can adapt to steel structure sections of different heights and can also be moved conveniently through the rollers at the bottom; The bottom and side limit seats located at the top of the device form a three-dimensional limiting space. The distance between the two side limit seats can be adjusted by driving the threaded rod with a second motor to accommodate steel structures of different widths. The limit seats are equipped with an elastic system consisting of an air chamber, a second spring, a piston, a first limit post, and a second limit post. This allows each limit post to extend and retract independently, closely fitting the uneven surface of the steel structure to achieve flexible clamping. Through multiple independently elastically set first and second limit posts, the device can adapt to the uneven contours of the bottom and sides of the segmented steel structure, achieving multi-point, tight, flexible contact and limiting, avoiding local stress concentration and protecting the surface of the steel structure. The sealing post is rotated by a third motor, changing the alignment relationship between the air holes and air passages on it, thereby connecting or closing each air chamber. When adjusting the position, the air passage is opened to facilitate the self-adaptation of the limit post; after positioning, the air passage is closed to lock the piston position and provide strong rigid support. A buffer structure consisting of a first spring and a shock-absorbing block is installed on the mounting plate to prevent the counterweight ball from colliding hard with the internal structure of the device when it swings violently, thus ensuring safety. Inside the column, a hoisting structure consisting of a first motor, a rotating shaft, bevel gears, and a connecting rope enables the lifting and lowering adjustment of the mounting plate and its counterweight balls. By replacing the counterweight balls with different numbers or masses, the natural frequency of the damper can be adjusted to tune it to the main vibration frequency of the steel structure. Vibration energy is consumed through inertial anti-phase oscillation, thus playing an active damping role. By combining traditional mechanical limiting with the principle of advanced tuned mass dampers, it can not only constrain the displacement of the steel structure but also actively consume vibration energy, significantly improving the seismic and wind resistance capabilities under temporary support conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the internal structure of the rectangular frame of the present invention; Figure 5 This is a cross-sectional view of the mounting disc of the present invention; Figure 6 This is a top view of the present invention; Figure 7 This is a cross-sectional view of the side limiting seat of the present invention.

[0017] Legend: 1. Column; 2. Lifting column; 3. Column base; 4. Mounting slot; 5. Bolt post; 6. First nut; 7. Bottom limit seat; 8. First limit post; 9. Side limit seat; 10. Second limit post; 11. Hydraulic cylinder; 12. Roller; 13. Guide wheel; 14. Mounting plate; 15. Stud; 16. Counterweight ball; 17. Second nut; 18. Connecting rope; 19. Rectangular frame; 20. Shaft seat; 21. Rotating shaft; 22. 23. Baffle; 24. Bevel gear; 25. First motor; 26. Groove; 27. First spring; 28. Anti-collision block; 29. ​​Adjustment groove; 20. Threaded rod; 31. Second motor; 32. Slider; 33. Transmission box; 34. Third motor; 35. Air chamber; 36. Second spring; 37. Piston; 38. Air passage; 39. Sealing column; 40. Air hole; 41. Sealing ring; 42. Drive shaft; 43. Chain tooth. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Specific implementation examples are given below.

[0020] See Figures 1-7 A temporary seismic limiting device for segmented installation of a large steel structure includes a column 1 and a lifting column 2. The lifting column 2 is slidably installed inside the column 1. A column base 3 is provided on the outer side of the bottom of the column 1. An installation groove 4 is opened on two opposite sides of the outside of the column 1. Several bolt columns 5 are provided on two opposite sides of the outside of the lifting column 2. The bolt columns 5 pass through the installation groove 4 and are connected to the first nut 6. A hydraulic cylinder 11 is installed on the other two opposite sides of the outside of the column 1. The telescopic end of the hydraulic cylinder 11 is connected to the bottom side of the bottom limiting seat 7. Loosening the first nut 6 causes the lifting column 2 to rise and fall through the telescopic movement of the hydraulic cylinder 11. When the lifting column 2 moves down to the bottom roller 12 contacting the ground, it is convenient to move the entire device. Several rollers 12 are installed on the bottom side of the lifting column 2. Guide wheels 13 are installed around the top of the lifting column 2, and each guide wheel 13 is equipped with a connecting rope 18. One end of each of the connecting ropes 18 is connected to a mounting plate 14 inside the column 1. A stud 15 is installed on the mounting plate 14, and the stud 15 passes through a counterweight ball 16 and is connected to a second nut 17. A rectangular frame 19 is provided on the outer side of the bottom of the column 1. Several bearing seats 20 are installed inside the rectangular frame 19, and a rotating shaft 21 is rotatably installed inside the bearing seat 20. Bevel teeth 23 are installed at both ends of the rotating shaft 21, and the bevel teeth 23 at the ends of adjacent rotating shafts 21 mesh with each other. A baffle 22 is symmetrically installed in the middle of the rotating shaft 21, and the middle of the rotating shaft 21 is wound and connected to the other end of the connecting rope 18. A first motor 24 is installed on the rectangular frame 19, and the output end of the first motor 24 is connected to one of the rotating shafts 21. Several slots 25 are opened at equal angles on the mounting plate 14, and a certain type of equipment is installed in the slot 25. Several first springs 26 are connected to anti-collision blocks 27. According to the installation height of the column 1 and the lifting column 2, the first motor 24 drives one of the rotating shafts 21 to rotate. Through the meshing transmission of the bevel gear 23, the connecting rope 18 is wound up and unwound. And through the guidance of the guide wheel 13, the installation plate 14 and the counterweight ball 16 are raised and lowered. The height of the counterweight ball 16 is adjusted. The counterweight ball 16 is installed on the stud 15 of the installation plate 14. The second nut 17 is unscrewed to facilitate the installation of counterweight balls 16 of different masses and different numbers on the stud 15. The vibration of the steel structure is transmitted to the device. Due to inertia, the suspended counterweight ball 16 will tend to remain stationary. The shaking of the device will cause the counterweight ball 16 to start swinging in the opposite direction relative to the column 1 and the lifting column 2. When the counterweight ball 16 swings, it consumes the energy of the building shaking and plays a shock absorption role. And through the first spring 26 and the anti-collision block 27, it plays an impact buffer role.

[0021] A bottom limit seat 7 is installed on the top of the lifting column 2. Several first limit posts 8 are elastically installed on the bottom limit seat 7. Two side limit seats 9 are slidably installed on the bottom limit seat 7, and several second limit posts 10 are elastically installed on opposite sides of the two side limit seats 9. Adjustment grooves 28 are symmetrically opened on the top of the bottom limit seat 7. A second motor 30 is installed on the side wall of the bottom limit seat 7. A threaded rod 29 is installed in the adjustment groove 28 at the output end of the second motor 30. The two ends of the threaded rod 29 have opposite thread directions, and the two ends of the threaded rod 29 are threadedly connected to the slider 31 at the bottom of the side limit seat 9. Several air chambers 34 are opened inside the bottom limit seat 7 and the side limit seat 9. A second spring 35 is installed in the air chamber 34. Spring 35 is connected to piston 36. Piston 36 in bottom limit seat 7 is connected to first limit post 8, and piston 36 in side limit seat 9 is connected to second limit post 10. Each horizontal row of air chambers 34 in bottom limit seat 7 is connected through air passage 37, and each vertical row of air chambers 34 in side limit seat 9 is connected through air passage 37. Several sealing posts 38 are rotatably installed in bottom limit seat 7 and side limit seat 9. Several air holes 39 are opened on the sealing posts 38, and the air holes 39 match the air passage 37. Several sealing rings 40 are fitted on the outside of the sealing posts 38, and the sealing rings 40 and air holes 39 are staggered. Transmission boxes 32 are installed on the side wall of bottom limit seat 7 and the top side of side limit seat 9. The end of the sealing post 38 is located in the transmission box 32. The transmission box 32 is equipped with a drive shaft 41, on which two chain teeth 42 are mounted. The chain teeth 42 on adjacent drive shafts 41 are connected by a chain, and the chain is staggered. A third motor 33 is mounted on the transmission box 32, and the output end of the third motor 33 is connected to the drive shaft 41. When the lifting column 2 moves upward, the first limit post 8 contacts the steel structure. As the lifting column 2 continues to move upward, the first limit post 8 moves in the air chamber 34, compressing the second spring 35. At this time, the first limit post 8 contacts and limits different parts of the bottom side of the steel structure. The second motor 30 drives the threaded rod 29 to rotate, and the slider 31, which is threadedly connected to the threaded rod 29, moves in the adjusting groove 28 until it reaches the second limit of the side limit seat 9. The second limiting post 10 contacts the steel structure. As the side limiting seat 9 continues to move, the second limiting post 10 moves within the air chamber 34, compressing the second spring 35. At this time, the second limiting post 10 contacts and limits different parts of the side wall of the steel structure. The third motor 33 drives one of the transmission shafts 41 to rotate. Through the transmission of the chain teeth 42 and the chain, the sealing post 38 is driven to rotate. When the air hole 39 on the sealing post 38 corresponds to the air passage 37, the air chamber 34 is connected to the outside through the air passage 37 and the air hole 39, which facilitates the movement of the piston 36 within the air chamber 34. When the air hole 39 on the sealing post 38 intersects with the air passage 37, the air chamber 34 is in a closed state, thus limiting the position of the piston 36.

[0022] Composed of a column 1, a lifting column 2, a hydraulic cylinder 11 and a first nut 6, the device height can be flexibly adjusted and locked, adapting to steel structure sections of different heights and also allowing for convenient movement via the bottom rollers 12. The bottom limiting seat 7 and the side limiting seat 9 located at the top of the device constitute a three-dimensional limiting space. The distance between the two side limiting seats 9 can be adjusted by driving the threaded rod 29 through the second motor 30 to adapt to steel structures of different widths. The limiting seat is equipped with an elastic system consisting of an air chamber 34, a second spring 35, a piston 36, a first limiting post 8 and a second limiting post 10, so that each limiting post can extend and retract independently, closely fitting the uneven surface of the steel structure to achieve flexible clamping. Through multiple independently elastically set first limiting posts 8 and second limiting posts 10, it can adapt to the uneven contours of the bottom and sides of the segmented steel structure, achieving multi-point, tight, flexible contact and limiting, avoiding local stress concentration and protecting the surface of the steel structure. The sealing post 38 is rotated by driving the third motor 33 to change the alignment relationship between the air hole 39 and the air passage 37 on it, thereby connecting or closing each air chamber 34. When adjusting the position, the air passage is opened to facilitate the self-adaptation of the limiting post, and the air passage is closed after the position is in place to lock the position of the piston 36 and provide strong rigid support. A buffer structure consisting of a first spring 26 and an anti-collision block 27 is provided on the mounting plate 14 to prevent the counterweight ball 16 from colliding hard with the internal structure of the device when it swings violently, thus ensuring safety. Inside the column 1, a hoisting structure consisting of a first motor 24, a rotating shaft 21, a bevel gear 23, and a connecting rope 18 is used to adjust the lifting and lowering of the mounting plate 14 and the counterweight ball 16 on it. By replacing the counterweight ball 16 with different numbers or masses, the natural frequency of the damper can be adjusted to tune it to the main vibration frequency of the steel structure. Vibration energy is consumed through inertial anti-phase oscillation, which plays an active role in damping. By combining the traditional mechanical limit with the advanced principle of tuned mass damper, it can not only constrain the displacement of the steel structure, but also actively consume vibration energy, significantly improving the earthquake and wind resistance under temporary support conditions.

[0023] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A temporary seismic limiting device for segmented installation of large steel structures, characterized in that, It includes a column (1) and a lifting column (2). The lifting column (2) is slidably installed inside the column (1). A column base (3) is provided on the outer side of the bottom of the column (1). A bottom limit seat (7) is installed on the top of the lifting column (2). Several first limit columns (8) are elastically installed on the bottom limit seat (7). Two side limit seats (9) are slidably installed on the bottom limit seat (7), and several second limit columns (10) are elastically installed on opposite sides of the two side limit seats (9). The lifting column (2) is equipped with several rollers (12) on its bottom side. The lifting column (2) is equipped with guide wheels (13) around its top. Each guide wheel (13) is equipped with a connecting rope (18). One end of each of the connecting ropes (18) is connected to the mounting plate (14) inside the column (1). The mounting plate (14) is equipped with a stud (15), and the stud (15) passes through the counterweight ball (16) and is connected to the second nut (17).

2. The temporary seismic limiting device for segmented installation of large steel structures according to claim 1, characterized in that, The column (1) has an installation groove (4) on two opposite sides outside. The lifting column (2) has several bolt columns (5) on two opposite sides outside. The bolt columns (5) pass through the installation groove (4) and are connected to the first nut (6).

3. A temporary seismic limiting device for segmented installation of large steel structures according to claim 2, characterized in that, Hydraulic cylinders (11) are installed on the other two opposite sides of the column (1), and the extension end of the hydraulic cylinder (11) is connected to the bottom side of the bottom limit seat (7).

4. A temporary seismic limiting device for segmented installation of large steel structures according to claim 3, characterized in that, A rectangular frame (19) is provided on the outer side of the bottom of the column (1). Several bearing seats (20) are installed in the rectangular frame (19), and a rotating shaft (21) is rotatably installed in the bearing seat (20). Bevel teeth (23) are installed at both ends of the rotating shaft (21). The bevel teeth (23) at the ends of adjacent rotating shafts (21) mesh with each other. A baffle (22) is symmetrically installed in the middle of the rotating shaft (21), and the middle of the rotating shaft (21) is wound and connected to the other end of the connecting rope (18). A first motor (24) is installed on the rectangular frame (19), and the output end of the first motor (24) is connected to one of the rotating shafts (21).

5. A temporary seismic limiting device for segmented installation of large steel structures according to claim 4, characterized in that, The mounting plate (14) has several slots (25) at equal angles. Several first springs (26) are installed in the slots (25), and the first springs (26) are connected to the anti-collision block (27).

6. A temporary seismic limiting device for segmented installation of large steel structures according to claim 5, characterized in that, The bottom limit seat (7) has symmetrical adjustment grooves (28) on its top. A second motor (30) is installed on the side wall of the bottom limit seat (7). The output end of the second motor (30) is located in the adjustment groove (28) and a threaded rod (29) is installed. The two ends of the threaded rod (29) have opposite thread directions, and the two ends of the threaded rod (29) are respectively threaded to the slider (31) at the bottom of the side limit seat (9).

7. A temporary seismic limiting device for segmented installation of large steel structures according to claim 6, characterized in that, The bottom limiting seat (7) and the side limiting seat (9) are provided with a number of air chambers (34). A second spring (35) is installed in the air chamber (34) and the second spring (35) is connected to the piston (36). The piston (36) in the bottom limiting seat (7) is connected to the first limiting post (8) and the piston (36) in the side limiting seat (9) is connected to the second limiting post (10).

8. A temporary seismic limiting device for segmented installation of large steel structures according to claim 7, characterized in that, Each row of air chambers (34) of the bottom limiting seat (7) is connected through an air passage (37), and each row of air chambers (34) of the side limiting seat (9) is connected through an air passage (37). Several sealing columns (38) are rotatably installed inside the bottom limiting seat (7) and the side limiting seat (9). Several air holes (39) are opened on the sealing columns (38), and the air holes (39) match the air passages (37). Several sealing rings (40) are fitted on the outside of the sealing columns (38), and the sealing rings (40) and the air holes (39) are staggered.

9. A temporary seismic limiting device for segmented installation of large steel structures according to claim 8, characterized in that, A transmission box (32) is installed on the side wall of the bottom limit seat (7) and the top side of the side limit seat (9). The end of the sealing column (38) is located inside the transmission box (32) and a transmission shaft (41) is installed. Two chain teeth (42) are installed on the transmission shaft (41). The chain teeth (42) on adjacent transmission shafts (41) are connected by a chain, and the chains are staggered. A third motor (33) is installed on the transmission box (32), and the output end of the third motor (33) is connected to the transmission shaft (41).

10. The working method of a temporary seismic limiting device for segmented installation of a large steel structure according to claim 9, characterized in that, The specific operational steps of this working method are as follows: Step 1: Loosen the first nut (6), and use the hydraulic cylinder (11) to extend and retract to raise and lower the lifting column (2). When the lifting column (2) moves down until the bottom roller (12) contacts the ground, it is convenient to move the entire device. The lifting column (2) moves up and the first limiting column (8) contacts the steel structure. As the lifting column (2) continues to move up, the first limiting column (8) moves in the air chamber (34) and compresses the second spring (35). At this time, the first limiting column (8) presses against different parts of the bottom side of the steel structure. The second motor (30) drives the threaded rod (29) to rotate, and the slider (31) connected to the threaded rod (29) moves in the adjustment groove (28) until the second limiting post (10) of the side limiting seat (9) contacts the steel structure. As the side limiting seat (9) continues to move, the second limiting post (10) moves in the air chamber (34) and compresses the second spring (35). At this time, the second limiting post (10) contacts and limits different parts of the side wall of the steel structure. Step 2: The third motor (33) drives one of the drive shafts (41) to rotate. Through the transmission of the chain teeth (42) and the chain, the sealing column (38) is driven to rotate. When the air hole (39) on the sealing column (38) corresponds to the air passage (37), the air chamber (34) is connected to the outside through the air passage (37) and the air hole (39), which facilitates the piston (36) to move in the air chamber (34). When the air hole (39) on the sealing column (38) intersects with the air passage (37), the air chamber (34) is in a closed state, thus limiting the position of the piston (36). Step 3: Based on the installation height of the column (1) and the lifting column (2), the first motor (24) drives one of the rotating shafts (21) to rotate. Through the meshing transmission of the bevel gear (23), the connecting rope (18) is wound up and unwound. Guided by the guide wheel (13), the installation plate (14) and the counterweight ball (16) are raised and lowered. The height of the counterweight ball (16) is adjusted, and the counterweight ball (16) is installed on the stud (15) of the installation plate (14). The second nut (17) is then unscrewed. This facilitates the installation of counterweight balls (16) of different masses and quantities on the stud (15). The vibration of the steel structure is transmitted to the device. Due to inertia, the suspended counterweight balls (16) tend to remain stationary. The shaking of the device will cause the counterweight balls (16) to start swinging in the opposite direction relative to the column (1) and the lifting column (2). When the counterweight balls (16) swing, they consume the energy of the building shaking and play a shock absorption effect. They also play an impact buffering role through the first spring (26) and the anti-collision block (27).

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