Steel structure bearing beam structure for public parking lot construction and lapping method thereof

Abstract

The application relates to the technical field of load-bearing beams, and particularly discloses a steel structure load-bearing beam structure for public parking lot construction and a lapping method thereof, which comprises a stand column for load bearing and a load-bearing cross beam, the stand column is provided with positioning steel plates on both sides, the stand column is provided with alignment openings on both sides, and the stand column is provided with induction plates on both sides; the load-bearing cross beam is connected with a hoisting assembly on the upper side; a movable frame is movably arranged on the stand column; the movable frame is detachably installed with the load-bearing cross beam through a connecting assembly; and the movable frame is provided with an alignment anti-falling mechanism; the hoisting assembly and the alignment anti-falling mechanism are arranged; when hoisting, the alignment anti-falling mechanism defines the hoisting of the load-bearing cross beam and reduces the friction force to improve the hoisting effect; meanwhile, the hoisting assembly can be matched to realize the safety protection of the load-bearing cross beam when the load-bearing cross beam accidentally falls during hoisting; when the load-bearing cross beam is hoisted to a position to be welded, the alignment anti-falling mechanism is used to realize the rapid alignment of the load-bearing cross beam, and the overall installation efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of load-bearing beam technology, and in particular to a steel structure load-bearing beam for the construction of public parking lots and its splicing method. Background Technology

[0002] A load-bearing beam is the main load-bearing structural component of a building. It can withstand the self-weight of the building, as well as external loads, such as the floor slabs, walls, and roof, to ensure the safety and stability of the building.

[0003] Typically, when constructing a steel-structured public parking lot, an external crane is used to hoist the columns on both sides of the load-bearing beam to the designated position. The columns are then secured to the mounting surface with bolts. The load-bearing crossbeam is then hoisted between the two columns using the crane. During the hoisting of the crossbeam, due to its considerable length, manual intervention using ropes from the ground is necessary to prevent excessive swaying. Furthermore, when the crossbeam is hoisted to the welding position between the two columns, two operators are required to align and spot-weld the crossbeam from both sides. Only after positioning can the crossbeam be fully welded to the columns. The overall installation process is inconvenient, and installation efficiency needs further improvement. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a steel structure load-bearing beam structure for the construction of public parking lots and its splicing method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steel structure load-bearing beam for public parking lot construction includes load-bearing columns and load-bearing beams. There are two columns, and the load-bearing beams are set between the two columns. Positioning steel plates are set on both sides of the columns, alignment openings are opened on both sides of the columns, and sensor plates are set on both sides of the columns. A hoisting assembly is connected to the upper side of the load-bearing beams. A movable frame is movably installed on the columns. The movable frame is detachably installed together with the load-bearing beams through connecting components. An alignment and anti-fall mechanism is set on the movable frame.

[0007] Preferably, the alignment and fall prevention mechanism includes an emergency stop plate, a first abutment plate, a movable wheel, a second abutment plate, a mounting base, and an alignment post. The mounting base is fixedly mounted on the emergency stop plate, the movable wheel is rotatably mounted on the movable frame, the second abutment plate for connecting the movable wheel is rotatably mounted on the mounting base, a proximity sensor is provided on the second abutment plate, the proximity sensor is electrically connected to an external controller, the emergency stop plate is rotatably mounted on the movable frame, the first abutment plate for connecting the emergency stop plate is rotatably mounted on the mounting base, and the alignment post adapted to the alignment port is provided on the movable frame.

[0008] Preferably, the movable wheel is rotatably connected to the second abutment plate, and the mounting base is provided with a connection port for connecting the alignment post, which can pass through the interior of the connection port and extend to the outside of the connection port.

[0009] Preferably, the alignment and anti-fall mechanism further includes a fixed box, a first hydraulic cylinder, a movable sleeve, a movable ball, and a second hydraulic cylinder. The fixed box is fixedly installed on the movable frame. The first hydraulic cylinder for driving the emergency stop plate and the movable wheel is installed on the fixed box. The movable sleeve is installed on the output shaft of the first hydraulic cylinder. The movable ball for connecting the emergency stop plate and the movable wheel is rotatably installed on the movable sleeve. The second hydraulic cylinder for driving the alignment column is installed on the fixed box.

[0010] Preferably, the hoisting assembly includes a hoisting frame, a tension sensor, and a hoisting rope. The hoisting frame is located on the upper side of the load-bearing crossbeam, the tension sensor is located at the top of the hoisting frame, and the hoisting rope is located on the hoisting frame.

[0011] Preferably, the connecting assembly includes a movable positioning frame, a movable anti-detachment plate, a positioning shaft, and a spring. The movable positioning frame is movably mounted on one side of the movable frame, and the movable anti-detachment plate is movably mounted on the side of the movable frame opposite to the movable positioning frame. The springs for connecting the movable positioning frame and the movable anti-detachment plate are arranged on both sides of the movable frame, and the positioning shafts for connecting the springs are arranged on both sides of the movable frame.

[0012] Preferably, one end of the positioning shaft is fixedly connected to the movable frame, and the other end of the positioning shaft is fixedly connected to the spring. One end of the springs on both sides is fixedly connected to the movable positioning frame and the movable anti-detachment plate, respectively. The movable frame is provided with a notch that is compatible with the movable anti-detachment plate and the movable positioning frame.

[0013] A method for constructing a steel load-bearing beam structure for a public parking lot includes the following steps:

[0014] S1. Before lifting, place the load-bearing crossbeam between the two movable frames, and use the movable positioning frames on both sides and the movable anti-detachment plate to position the load-bearing crossbeam. The movable frames on both sides are connected to the load-bearing crossbeam.

[0015] S2. During hoisting, the hoisting frame is pulled upward. The tension sensor senses the change in tension and controls the first hydraulic cylinder to start and drive the second abutment plate to rotate through the external controller. The movable wheel contacts and rotates with the column. The hoisting frame is pulled and drives the load-bearing beam to move upward.

[0016] S3. When the load-bearing crossbeam is hoisted to the top of the column to be welded, the movable frame moves with the load-bearing crossbeam to the top of the column. After approaching the sensor sensing plate, the first hydraulic cylinder drives the emergency stop plate to rotate to an inclined position and abut against the top of the positioning steel plate on the lower side. At the same time, the second hydraulic cylinder drives the alignment column to be inserted into the alignment port, realizing the rapid positioning of the load-bearing crossbeam before welding.

[0017] S4. Weld the load-bearing beam to the column. The load-bearing beam installation is now complete.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention incorporates a hoisting assembly and an alignment and anti-fall mechanism. The hoisting assembly connects the load-bearing beam to an external crane. During hoisting, the alignment and anti-fall mechanism reduces friction on the load-bearing beam and the movable frame as they move upwards. This reduces friction while limiting the hoisting of the load-bearing beam, improving the hoisting effect. It also works with the hoisting assembly to provide safety protection in case the load-bearing beam accidentally falls during hoisting. When the load-bearing beam is hoisted to the welding position, the alignment and anti-fall mechanism enables rapid alignment, eliminating the need for manual alignment welding before welding. This makes the overall operation safer and more convenient. Furthermore, the overall stability is further improved before, during, and after hoisting, resulting in a significantly enhanced overall installation effect.

[0020] This invention, by setting up a connecting component, can quickly connect the load-bearing crossbeam and the movable frame. Before hoisting and after the load-bearing crossbeam is welded, the movable frame and the load-bearing crossbeam can be quickly aligned and installed, further improving the overall installation efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a steel structure load-bearing beam for the construction of a public parking lot, as proposed in this invention.

[0022] Figure 2 This is a schematic diagram of the hoisting and alignment of a steel load-bearing beam structure for the construction of a public parking lot, as proposed in this invention.

[0023] Figure 3 This is a schematic diagram of an alignment and anti-fall mechanism in a steel structure load-bearing beam structure for the construction of a public parking lot, as proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the connecting components in a steel structure load-bearing beam structure for the construction of a public parking lot, as proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the alignment and anti-fall mechanism during hoisting in a steel structure load-bearing beam structure for the construction of a public parking lot, as proposed in this invention.

[0026] Figure 6 This is a schematic diagram illustrating the state of the alignment and anti-fall mechanism during hoisting and falling in a steel structure load-bearing beam structure for the construction of a public parking lot, as proposed in this invention.

[0027] Figure 7 This is a schematic diagram of the alignment and anti-fall mechanism during hoisting and alignment in a steel structure load-bearing beam structure for public parking lot construction proposed in this invention.

[0028] In the diagram: 1. Column; 2. Load-bearing beam; 3. Lifting frame; 4. Tension sensor; 5. Lifting rope; 6. Lifting assembly; 7. Movable frame; 8. Positioning steel plate; 9. Alignment port; 10. Sensing plate; 11. Emergency stop plate; 12. First abutment plate; 13. Movable wheel; 14. Second abutment plate; 15. Proximity sensor; 16. Fixed box; 17. Movable positioning frame; 18. Movable anti-detachment plate; 19. Positioning shaft; 20. Spring; 21. Connecting assembly; 22. First hydraulic cylinder; 23. Movable sleeve; 24. Movable ball; 25. Second hydraulic cylinder; 26. Mounting base; 27. Alignment column; 28. Alignment anti-fall mechanism. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figure 1-7A steel structure load-bearing beam for public parking lot construction includes load-bearing columns 1 and load-bearing beams 2. There are two columns 1, and the load-bearing beams 2 are positioned between the two columns 1. Positioning steel plates 8 are provided on both sides of each column 1, and alignment openings 9 are provided on both sides of each column 1. Induction plates 10 are provided on both sides of each column 1. The positioning steel plates 8 and induction plates 10 are positioned on the column 1 near the top where the load-bearing beams 2 are welded. A hoisting assembly 6 is connected to the upper side of the load-bearing beams 2. The hoisting assembly 6 is used for hoisting... The load-bearing crossbeam 2 is used to connect with an external crane. A movable frame 7 is movably installed on the column 1. The movable frame 7 has a frame-shaped cross-section and can slide on the column 1. The movable frame 7 is detachably installed together with the load-bearing crossbeam 2 through a connecting assembly 21. During hoisting, the connecting assembly 21 is used to connect the load-bearing crossbeam 2 to the movable frames 7 on both sides to achieve rapid alignment and installation of the load-bearing crossbeam 2 before hoisting. The movable frame 7 is equipped with an alignment and anti-fall mechanism 28, which can improve the hoisting performance of the load-bearing crossbeam 2. While improving efficiency, it also prevents the problem of falling during hoisting. By incorporating a hoisting assembly 6, a connecting assembly 21, and an alignment and anti-fall mechanism 28, the connecting assembly 21 can quickly connect the load-bearing beam 2 and the movable frame 7 before hoisting. During hoisting, the hoisting assembly 6 connects the load-bearing beam 2 to the external crane. During hoisting, the movable frame 7 can limit the hoisting trajectory of the load-bearing beam 2, eliminating the need for manual restriction of its trajectory. Simultaneously, the alignment and anti-fall mechanism 28 reduces... The friction force during the upward hoisting and movement of the small load-bearing crossbeam 2 and the movable frame 7 improves the hoisting effect. At the same time, it can work with the hoisting component 6 to provide safety protection in case the load-bearing crossbeam 2 accidentally falls during hoisting. When the load-bearing crossbeam 2 is hoisted to the position to be welded, the alignment and anti-fall mechanism 28 is used to achieve rapid alignment of the load-bearing crossbeam 2, eliminating the need for manual alignment welding before welding. The overall operation is safer and more convenient. At the same time, the overall stability before hoisting, during hoisting and welding is further improved, and the overall installation efficiency is effectively improved.

[0031] As a technical optimization of the present invention, the alignment and fall prevention mechanism 28 includes an emergency stop plate 11, a first abutment plate 12, a movable wheel 13, a second abutment plate 14, a mounting base 26, and an alignment column 27. The mounting base 26 is fixedly mounted on the emergency stop plate 11. The side wall of the mounting base 26 near the movable frame 7 is arc-shaped. The movable wheel 13 is rotatably mounted on the movable frame 7. The movable wheel 13 is composed of two cylindrical plates and a cylindrical shaft. The second abutment plate 14, which connects the movable wheel 13, is rotatably mounted on the mounting base 26. The movable wheel 13 and the second abutment plate 14 are rotatably connected together. A proximity sensor 15 (SN04-N) is provided on the second abutment plate 14. The proximity sensor 15 is electrically connected to the peripheral controller (S7-200). Next, when the load-bearing beam 2 is hoisted to the welding position at the top of the column 1, the proximity sensor 15 can sense the position of the sensing plate 10 and proceed to the next operation. When the second abutment plate 14 rotates to an inclined position, the movable wheel 13 can contact the column 1. The emergency stop plate 11 is rotatably mounted on the movable frame 7. The first abutment plate 12 for connecting the emergency stop plate 11 is rotatably mounted on the mounting base 26. When the first abutment plate 12 rotates to an inclined position, the emergency stop plate 11 can abut against the column 1. The alignment post 27, which is adapted to the alignment port 9, is set on the movable frame 7. The mounting base 26 has a connection port for connecting the alignment post 27. The alignment post 27 can pass through the inside of the connection port and extend to the outside of the connection port. The alignment anti-fall mechanism 28 is provided. Before lifting the load-bearing beam 2, place it between two movable frames 7. The load-bearing beam 2 and the movable frames 7 are detachable for installation before lifting and disassembly after lifting. During lifting, the second abutment plate 14 rotates to an inclined position, the movable wheel 13 contacts the column 1, and the movable frames 7 on both sides are connected to the load-bearing beam 2. This limits the lifting trajectory of the load-bearing beam 2 without requiring manual control. When lifting the load-bearing beam 2 upwards, the movable wheel 13 contacts the column 1 while rotating, reducing friction between the movable wheel 13 and the column 1 during lifting and improving the lifting effect. In case of an unexpected situation where the load-bearing beam 2 falls during lifting, the second abutment plate... 14 rotates to a vertical position, the first abutment plate 12 rotates to an inclined position, and the emergency stop plate 11 simultaneously abuts against the column 1. During the downward fall of the load-bearing beam 2, the emergency stop plate 11 can abut against the column 1 to increase the friction force when the load-bearing beam 2 slides down, and slow down the speed when the load-bearing beam 2 falls. When the speed of the load-bearing beam 2 gradually decreases to close to zero, it can play a timely braking effect when the load-bearing beam 2 falls. When the load-bearing beam 2 is hoisted to the welding position at the top of the column 1, after it approaches the position of the sensing plate 10 of the sensor 15, the emergency stop plate 11 rotates to an inclined position and abuts against the top of the positioning steel plate 8 at the lower position. At the same time, the alignment column 27 is inserted into the alignment port 9 to achieve rapid positioning of the load-bearing beam 2 before welding. No manual spot welding positioning is required later.

[0032] As a technical optimization of the present invention, the alignment and fall arresting mechanism 28 further includes a fixed box 16, a first hydraulic cylinder 22, a movable sleeve 23, a movable ball 24, and a second hydraulic cylinder 25. The fixed box 16 is fixedly installed on the movable frame 7 and is electrically connected to an external controller. The first hydraulic cylinder 22, which drives the emergency brake plate 11 and the movable wheel 13, is mounted on the fixed box 16. The movable sleeve 23 is mounted on the output shaft of the first hydraulic cylinder 22. The movable ball 24, which connects the emergency brake plate 11 and the movable wheel 13, is rotatably mounted on the movable sleeve 25. On the 3rd floor, the second hydraulic cylinder 25 for driving the alignment column 27 is installed on the fixed box 16. The second hydraulic cylinder 25 is electrically connected to the external controller. By providing the first hydraulic cylinder 22, the movable sleeve 23 and the movable ball 24, the first hydraulic cylinder 22 can be electrically connected to the external controller to control the rotation of the emergency stop plate 11 and the movable wheel 13 during hoisting. At the same time, when the load-bearing beam 2 is hoisted to the welding position at the top of the column 1, the second hydraulic cylinder 25 is driven by the external controller to drive the alignment column 27 into the alignment port 9 to achieve the positioning of the load-bearing beam 2.

[0033] As a technical optimization of the present invention, the hoisting assembly 6 includes a hoisting frame 3, a tension sensor 4, and a hoisting rope 5. The hoisting frame 3 is located on the upper side of the load-bearing beam 2, and is connected to the movable frames 7 on both sides by hooks. The tension sensor 4 (PSD-S1) is located at the top of the hoisting frame 3 and is electrically connected to an external controller. The hoisting rope 5 is mounted on the hoisting frame 3, and the tension sensor 4 can sense the tension of the hoisting rope 5 during the hoisting process. The hoisting assembly 6 is used to hoist the load-bearing beam 2. During hoisting, the hoisting rope 5 senses the tension in real time. If tension occurs during hoisting, the hoisting rope 5 will detect the tension. When the load-bearing beam 2 falls due to the breakage of the rope 5, the tension sensor 4 senses the change in tension when the rope 5 breaks and controls the first hydraulic cylinder 22, which is used to connect the first abutment plate 12, to start and drive the first abutment plate 12 to rotate synchronously, thereby driving the emergency stop plate 11 to abut against the column 1. When the emergency stop plate 11 abuts against the column 1, it can increase the friction force when the load-bearing beam 2 slides down, and slow down the speed of the load-bearing beam 2 when it falls. When the speed of the load-bearing beam 2 gradually decreases to close to zero, it can play a timely braking effect on the fall of the load-bearing beam 2, avoiding safety problems such as the load-bearing beam 2 falling and hitting the surrounding construction personnel.

[0034] As a technical optimization of the present invention, the connecting assembly 21 includes a movable positioning frame 17, a movable anti-detachment plate 18, a positioning shaft 19, and a spring 20. The movable positioning frame 17 is movably mounted on one side of the movable frame 7 and is composed of a vertical rectangular plate and a rectangular horizontal plate. The movable anti-detachment plate 18 is movably mounted on the side of the movable frame 7 opposite to the movable positioning frame 17. The springs 20 for connecting the movable positioning frame 17 and the movable anti-detachment plate 18 are arranged on both sides of the movable frame 7. One end of the springs 20 on both sides is fixedly connected to the movable positioning frame 17 and the movable anti-detachment plate 18, respectively. The positioning shaft 19 for connecting the springs 20 is arranged on both sides of the movable frame 7. One end of the positioning shaft 19 is fixedly connected to the movable frame 7, and the other end of the positioning shaft 19 is connected to the spring. 20. Fixed connection. The movable frame 7 has a notch adapted to the movable anti-detachment plate 18 and the movable positioning frame 17. With the connection component 21, before lifting, the load-bearing beam 2 is placed horizontally between the two movable frames 7. The movable positioning frame 17 and the movable anti-detachment plate 18 on both sides are used to position the load-bearing beam 2. The load-bearing beam 2 and the movable frame 7 are connected and fixed to each other. During lifting, the movable frame 7 can be used to limit the trajectory of the load-bearing beam 2. When the load-bearing beam 2 is lifted to the top position of the column 1, it can be quickly aligned and welded without manual spot welding. After the load-bearing beam 2 is welded, the movable positioning frame 17 and the movable anti-detachment plate 18 are pulled to both sides to detach from the load-bearing beam 2. The remaining position of the connection between the load-bearing beam 2 and the column 1 is welded to complete the welding operation between the load-bearing beam 2 and the column 1.

[0035] A method for constructing a steel load-bearing beam structure for a public parking lot includes the following steps:

[0036] S1. Before lifting, place the load-bearing crossbeam 2 between the two movable frames 7, and use the movable positioning frames 17 on both sides and the movable anti-detachment plate 18 to position the load-bearing crossbeam 2. The movable frames 7 on both sides are connected to the load-bearing crossbeam 2.

[0037] S2. During hoisting, the hoisting frame 3 is pulled upward. The tension sensor 4 senses the change in tension and controls the first hydraulic cylinder 22 to start and drive the second abutment plate 14 to rotate. The movable wheel 13 contacts the column 1 and rotates. The hoisting frame 3 is pulled and drives the load-bearing beam 2 to move upward.

[0038] S3. When the load-bearing beam 2 is hoisted to the top of the column 1 to be welded, the movable frame 7 moves with the load-bearing beam 2 to the top of the column 1. After the sensor 15 approaches the sensing plate 10, the first hydraulic cylinder 22 drives the emergency stop plate 11 to rotate to an inclined position and abut against the top of the positioning steel plate 8 on the lower side. At the same time, the second hydraulic cylinder 25 drives the alignment column 27 to be inserted into the alignment port 9, so as to realize the rapid positioning of the load-bearing beam 2 before welding.

[0039] S4. Weld the load-bearing beam 2 to the column 1. The load-bearing beam 2 is now installed.

[0040] In use, before lifting, the load-bearing beam 2 is placed between two movable frames 7. The movable positioning frames 17 on both sides and the movable anti-detachment plate 18 are used to position the load-bearing beam 2. The movable frames 7 on both sides are connected to the load-bearing beam 2, which limits the lifting trajectory of the load-bearing beam 2 during lifting, eliminating the need for manual limitation during lifting. During lifting, the lifting frame 3 is pulled upward, and the tension sensor 4 senses the change in tension and controls the first hydraulic cylinder 22 through the external controller to drive the second abutment plate 14 to rotate to an inclined position. The movable wheel 13 contacts the column 1. When the load-bearing beam 2 is lifted upward, the movable wheel 13 contacts the column 1 while maintaining rotation, reducing the friction between the movable wheel 13 and the column 1 during the lifting of the load-bearing beam 2 and improving the lifting effect. If an accident occurs during lifting, such as the load-bearing beam 2 falling due to the sudden breakage of the lifting rope 5, the tension sensor 4 senses the change in tension and controls the first hydraulic cylinder 22 through the external controller to drive the second abutment plate 14 to rotate to an inclined position. The second abutment plate 14 rotates to a vertical position, the first abutment plate 12 rotates to an inclined position, and the emergency stop plate 11 simultaneously abuts against the column 1. During the downward fall of the load-bearing beam 2, the emergency stop plate 11 can abut against the column 1, increasing the friction force when the load-bearing beam 2 slides down and slowing down the speed of the load-bearing beam 2 when it falls. When the speed of the load-bearing beam 2 gradually decreases to close to zero, it can play a timely braking effect when the load-bearing beam 2 falls, thus improving the overall safety. When the load-bearing beam 2 is hoisted to the top of the column 1 to be welded, the movable frame 7 moves with the load-bearing beam 2 to the top of the column 1. After approaching the sensor 15 and sensing the sensing plate 10, the first hydraulic cylinder 22 is controlled by the external controller to drive the emergency stop plate 11 to rotate to an inclined position and abut against the top of the positioning steel plate 8 on the lower side. At the same time, the second hydraulic cylinder 25 drives the alignment column 27 to be inserted into the alignment port 9, realizing the rapid positioning of the load-bearing beam 2 before welding, and eliminating the need for manual spot welding positioning later.

[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0042] The above description is merely a preferred embodiment 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 steel structure load-bearing beam structure for the construction of a public parking lot, comprising load-bearing columns (1) and load-bearing beams (2), wherein there are two columns (1) and the load-bearing beams (2) are arranged between the two columns (1), characterized in that: Positioning steel plates (8) are provided on both sides of the column (1), alignment openings (9) are provided on both sides of the column (1), and sensing plates (10) are provided on both sides of the column (1). A hoisting assembly (6) is connected to the upper side of the load-bearing beam (2). The hoisting assembly (6) is used to connect the load-bearing beam (2) to the external hoist during hoisting. A movable frame (7) is movably installed on the column (1). The movable frame (7) is detachably installed together with the load-bearing beam (2) through the connecting assembly (21). During hoisting, the connecting assembly (21) is used to connect the load-bearing beam (2) to the movable frames (7) on both sides. An alignment and anti-fall mechanism (28) is provided on the movable frame (7). The alignment and anti-fall mechanism (28) includes an emergency stop plate (11), a first abutment plate (12), a movable wheel (13), a second abutment plate (14), a mounting base (26), and an alignment post (27). The mounting base (26) is fixedly installed on the emergency stop plate (11). The movable wheel (13) is rotatably installed on the movable frame (7). The second abutment plate (14) for connecting the movable wheel (13) is rotatably installed on the mounting base (26). A proximity sensor (15) is provided on the second abutment plate (14). The proximity sensor (15) is electrically connected to the external controller. The emergency stop plate (11) is rotatably installed on the movable frame (7). The first abutment plate (12) for connecting the emergency stop plate (11) is rotatably installed on the mounting base (26). The alignment post (27) adapted to the alignment port (9) is set on the movable frame (7). The movable wheel (13) is rotatably connected to the second abutment plate (14). The mounting base (26) is provided with a connection port for connecting the alignment post (27). The alignment post (27) can penetrate the inside of the connection port and extend to the outside of the connection port. The alignment and anti-fall mechanism (28) further includes a fixed box (16), a first hydraulic cylinder (22), a movable sleeve (23), a movable ball (24), and a second hydraulic cylinder (25). The fixed box (16) is fixedly installed on the movable frame (7). The first hydraulic cylinder (22) for driving the emergency stop plate (11) and the movable wheel (13) is installed on the fixed box (16). The movable sleeve (23) is installed on the output shaft of the first hydraulic cylinder (22). The movable ball (24) for connecting the emergency stop plate (11) and the movable wheel (13) is rotatably installed on the movable sleeve (23). The second hydraulic cylinder (25) for driving the alignment column (27) is installed on the fixed box (16).

2. The steel structure load-bearing beam structure for the construction of a public parking lot according to claim 1, characterized in that: The hoisting assembly (6) includes a hoisting frame (3), a tension sensor (4), and a hoisting rope (5). The hoisting frame (3) is located on the upper side of the load-bearing beam (2), the tension sensor (4) is located at the top of the hoisting frame (3), and the hoisting rope (5) is located on the hoisting frame (3).

3. A steel structure load-bearing beam structure for the construction of a public parking lot according to claim 2, characterized in that: The connecting assembly (21) includes a movable positioning frame (17), a movable anti-detachment plate (18), a positioning shaft (19), and a spring (20). The movable positioning frame (17) is movably mounted on one side of the movable frame (7), and the movable anti-detachment plate (18) is movably mounted on the side of the movable frame (7) opposite to the movable positioning frame (17). The spring (20) for connecting the movable positioning frame (17) and the movable anti-detachment plate (18) is located on both sides of the movable frame (7), and the positioning shaft (19) for connecting the spring (20) is located on both sides of the movable frame (7).

4. A steel structure load-bearing beam structure for the construction of a public parking lot according to claim 3, characterized in that: One end of the positioning shaft (19) is fixedly connected to the movable frame (7), and the other end of the positioning shaft (19) is fixedly connected to the spring (20). One end of the springs (20) on both sides is fixedly connected to the movable positioning frame (17) and the movable anti-detachment plate (18) respectively. The movable frame (7) has a notch that is compatible with the movable anti-detachment plate (18) and the movable positioning frame (17).

5. A method for constructing a steel load-bearing beam structure for a public parking lot as described in claim 4, characterized in that, Includes the following steps: S1. Before lifting, place the load-bearing crossbeam (2) between the two movable frames (7), and use the movable positioning frames (17) on both sides and the movable anti-detachment plate (18) to position the load-bearing crossbeam (2). The movable frames (7) on both sides are connected to the load-bearing crossbeam (2). S2. During hoisting, the hoisting frame (3) is pulled upward. The tension sensor (4) senses the change in tension and controls the first hydraulic cylinder (22) to start and drive the second abutment plate (14) to rotate. The movable wheel (13) contacts the column (1) and rotates. The hoisting frame (3) is pulled and drives the load-bearing beam (2) to move upward. S3. When the load-bearing beam (2) is hoisted to the top of the column (1) to be welded, the movable frame (7) moves with the load-bearing beam (2) to the top of the column (1). After the sensor (15) approaches the sensing plate (10), the first hydraulic cylinder (22) drives the emergency stop plate (11) to rotate to an inclined position and abut against the top of the positioning steel plate (8) on the lower side. At the same time, the second hydraulic cylinder (25) drives the alignment column (27) to be inserted into the alignment port (9) to achieve rapid positioning of the load-bearing beam (2) before welding. S4. Weld the load-bearing beam (2) to the column (1) to complete the installation of the load-bearing beam (2).

Images