Temporary scaffolding and method of erection

Abstract

The application relates to a temporary scaffold for a hollowed-out area and a construction method, which comprises a supporting plate, steel structures and I-shaped steel, the supporting plate is located at a hollowed-out position, the supporting plate is connected to building bodies on two sides respectively, the steel structures are provided with two, the two steel structures are located on the two sides of the supporting plate respectively, the steel structure is in a T shape, two ends of the steel structure are connected to the building bodies on the two sides respectively, the other end of the steel structure is connected to the supporting plate, the I-shaped steel is provided with a plurality of I-shaped steels, the plurality of I-shaped steels are distributed along the length direction of the supporting plate, the I-shaped steel comprises a plurality of steel sections, the plurality of steel sections are sequentially spliced and slidably connected to the steel structure, and the plurality of I-shaped steels are provided with the scaffold. The application has the effect that the I-shaped steel can be conveniently transported to a high position.

Description

Technical Field

[0001] This application relates to the field of scaffolding equipment technology, and in particular to temporary scaffolding for open areas and methods for its construction. Background Technology

[0002] When building the Twin Towers, an open space is usually created between the two buildings. After the buildings are completed, mechanical and electrical equipment and decoration processes need to be installed on the lower surface of the open space. Typically, a steel structure is pre-embedded between the two buildings one floor below the open space, and then scaffolding supports (usually I-beams) are erected on the steel structure, and then scaffolding is built on the I-beams.

[0003] However, since the two buildings are located between the open area, there is usually a glass curtain wall, and the scaffolding supports are quite long, it is not convenient to transport the I-beams to the high place. Summary of the Invention

[0004] To facilitate the transport of I-beams to higher ground, this application provides temporary scaffolding and erection methods for open areas.

[0005] The technical solution for temporary scaffolding and its erection method for open areas provided in this application is as follows:

[0006] The open area is scaffolded with temporary scaffolding, including support plates, steel structures, and I-beams. The support plates are located in the open area and are connected to the building structures on both sides. There are two steel structures, each located on one side of the support plate. The steel structures are T-shaped, with one end connected to the building structures on both sides and the other end connected to the support plate. There are several I-beams distributed along the length of the support plate. Each I-beam consists of several steel segments, which are sequentially spliced ​​and slidably connected to the steel structure. Scaffolding is installed on the I-beams.

[0007] By adopting the above technical solution, when constructing a building, steel structures and support plates are pre-embedded between the two buildings. When scaffolding needs to be installed, steel sections are transported to the support plates via elevators within the building. The steel sections are then moved to the support plates and placed sequentially at the connection between the support plates and the steel structures. The steel sections are then pushed outwards, and subsequently welded together to extend the I-beams. These I-beams are then erected between the support plates and the steel structures. Multiple I-beams are installed between the support plates and the steel structures using this method, and then scaffolding is installed on the I-beams.

[0008] Optionally, the steel structure includes a transverse section and a longitudinal section. The two ends of the transverse section are respectively connected to the building on both sides. One end of the longitudinal section is connected to a support plate, and the other end of the longitudinal section is connected to the transverse section. The longitudinal section has a first guide groove, and the transverse section has a second guide groove. Each I-beam is provided with a first guide wheel at the steel segment closest to the transverse section. The base of the first guide wheel is provided with a first rotating shaft, which is rotatably connected to the steel segment. The steel segment is provided with a drive assembly to drive the first rotating shaft to rotate. The steel segment farthest from the transverse section is provided with a second guide wheel. The support plate has a second guide groove for the second guide wheel to move.

[0009] By adopting the above technical solution, a first guide wheel is set on the steel segment. When installing the steel segment, the first guide wheel slides in the first guide groove, which facilitates pushing the steel segment towards the transverse segment. After the entire I-beam is installed, the first guide wheel is driven to rotate 90 degrees by the drive assembly, so that the first guide wheel can move in the second guide groove. This allows the I-beam to be moved to one side after the entire I-beam segment is installed. After the scaffolding is installed, the first guide wheel and the second guide wheel can move, thereby adjusting the position of the scaffolding.

[0010] Optionally, the drive assembly includes a gear, a rack, and a first spring that drives the rack to slide. The gear is coaxially mounted on a first rotating shaft, and the rack slides along the length of the steel segment and is connected to the steel segment. The rack meshes with the gear, and the first spring forces the rack to slide and drives the first guide wheel to rotate 90 degrees through the gear.

[0011] By adopting the above technical solution, after the entire section of I-beam is installed, the first spring forces the rack to slide, and the rack slides to drive the gear to rotate, which in turn drives the first guide wheel to rotate, so that the first guide wheel rotates 90 degrees, so that the first guide wheel can move on the second guide groove.

[0012] Optionally, the transverse segment is provided with an abutment block corresponding to the longitudinal segment, the steel segment has a through hole for the first rotating shaft to rotate through, the first rotating shaft is radially slidably connected to a first limiting block, the inner wall of the through hole has a first locking groove for the first limiting block to be locked, the steel segment is provided with a driving block slidably connected to the first locking groove, the end faces of the first limiting block and the driving block that are close to each other are provided with a first magnet that attracts each other, when the first limiting block is locked in the first locking groove, the driving block protrudes from the end face of the steel segment that is close to the abutment block.

[0013] By adopting the above technical solution, when the steel segment is gradually installed and extended and moved closer to the transverse segment, when the driving block abuts against the abutting block, the driving block slides, thereby causing the first limiting block to disengage from the first locking groove, so as to release the limitation on the rotation of the first rotating shaft, so that the first rotating shaft can rotate under the drive of the rack.

[0014] Optionally, the steel segment closest to the transverse segment is the first steel segment, and the first steel segment is provided with a first connecting rope connected to the rack. The steel segment farthest from the transverse segment is the second steel segment, and the steel segment between the first and second steel segments is the third steel segment. Both the second and third steel segments are provided with second connecting ropes. The two ends of the second connecting ropes are fixed by fixing ropes. The end of the first connecting rope away from the rack is provided with a first connecting block, and the ends of the second connecting ropes close to each other are provided with second connecting blocks. The side of the second connecting block close to the adjacent second connecting rope is provided with a second magnet, and the side of the first connecting block close to the second connecting rope is provided with a second magnet.

[0015] By adopting the above technical solution, when disassembling the I-beam, the I-beam can be slid out along the original path. At this time, the first guide wheel needs to be rotated 90 degrees. When splicing the I-beam, the first connecting block and the second connecting block that are close to each other are attracted to each other by the second magnet, so that the first connecting rope and the second connecting rope can be connected into a whole. After pulling the first connecting rope, the second connecting rope can be pulled, which in turn drives the rack to slide, thereby driving the first guide wheel to rotate 90 degrees.

[0016] Optionally, the steel segment is provided with an unwinding roller, the unwinding roller winds up a protective net, the free end of the protective net is provided with a locking roller, and the other end of the steel segment away from the unwinding roller is provided with a second locking groove for locking the locking roller on the adjacent I-beam, and the second locking groove is provided with a limiting component for limiting the locking roller.

[0017] By adopting the above technical solution, after the I-beams are installed, the clamping roller can be pulled to unwind the protective netting. Then, the clamping roller is clamped into the second clamping groove on the adjacent I-beams, so that the protective netting is installed between the two I-beams, thereby improving the safety of construction personnel.

[0018] Optionally, the steel segment is provided with a third locking groove for locking by the locking roller, and the opening of the second locking groove faces obliquely upward.

[0019] By adopting the above technical solution, the steel section is equipped with a third locking groove. When the protective net is not being unrolled, the locking roller can be locked in the third locking groove to fix the locking roller.

[0020] Optionally, a locking rod is coaxially arranged on the side of the locking roller, and a plurality of elastic rods are arranged on the end face of the locking rod. The plurality of elastic rods are arranged in a circumferential array. A third limiting block is arranged on the outer side of the elastic rod away from the locking roller. A locking hole is opened on the other end face of the locking roller for locking adjacent locking rollers. An annular groove is opened on the wall of the locking hole for locking the third limiting block. A wedge-shaped surface is provided on the outer side of the third limiting block. When the wedge-shaped surface abuts against the wall of the locking hole, the wedge-shaped surface can force the elastic rod to deform, so that the third limiting block avoids the wall of the locking hole.

[0021] By adopting the above technical solution, since each I-beam is equipped with several take-up rollers, after the I-beam is installed, in order to facilitate the clamping of multiple clamping rollers onto the second clamping groove on adjacent I-beams, it is necessary to make several clamping tubes on the same I-beam form a whole. Therefore, the clamping roller is equipped with an elastic rod and a third limiting block. When installing the steel segment, the steel segment moves to the previous steel segment, so that the third limiting block is aligned with the clamping hole of the clamping roller of the previous steel segment. Then the steel segment is pushed, at which time the elastic rod deforms, so that the third limiting block avoids the hole wall of the clamping hole, thereby forcing the third limiting block to be clamped in the annular groove, thereby fixing two adjacent clamping rollers.

[0022] Optionally, the locking roller is provided with an elastic ring, the elastic ring is provided with an elastic notch, and the elastic ring is sleeved on a plurality of third limiting blocks.

[0023] By adopting the above technical solution, an elastic ring is provided. By pressing the elastic ring, several third limiting blocks move in a direction that brings them closer to each other, so that the third limiting blocks can disengage from the annular groove.

[0024] The method for constructing temporary scaffolding in open areas includes the following steps:

[0025] Step S1: Embed the support plate and steel structure;

[0026] Step S2: Move the steel segment onto the support plate;

[0027] Step S3: Install the steel segments on the longitudinal section and splice several steel segments together so that the length of the spliced ​​steel segments is greater than the length of the longitudinal section. Then slide the spliced ​​steel segments onto the longitudinal section in sequence. Install multiple I-beams in this way.

[0028] Step S4: Install scaffolding on the I-beams

[0029] In summary, the present invention has the following beneficial effects:

[0030] 1. During the construction of the building, steel structures and support plates are pre-embedded between the two buildings. When scaffolding needs to be installed, steel sections are transported to the support plates via elevators inside the building. The steel sections are then moved to the support plates and placed at the connection between the support plates and the steel structures. The steel sections are then pushed outwards and welded together to extend the I-beams. These I-beams are then erected between the support plates and the steel structures. Multiple I-beams are installed between the support plates and the steel structures in this manner, and then scaffolding is installed on the I-beams.

[0031] 2. Since each I-beam has several take-up rollers, after the I-beams are installed, in order to facilitate the clamping of multiple clamping rollers onto the second clamping grooves on adjacent I-beams, it is necessary to make several clamping tubes on the same I-beam form a whole. Therefore, elastic rods and third limiting blocks are provided on the clamping rollers. When installing steel segments, the steel segment moves to the previous steel segment, so that the third limiting block aligns with the clamping hole of the clamping roller of the previous steel segment. Then, the steel segment is pushed, at which time the elastic rod deforms, so that the third limiting block avoids the hole wall of the clamping hole, thereby forcing the third limiting block to clamp into the annular groove, thus fixing two adjacent clamping rollers. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0033] Figure 2 This is a schematic diagram of the overall structure of Example 2;

[0034] Figure 3 This is a schematic diagram of the I-beam structure in Example 2;

[0035] Figure 4 This is a schematic diagram of the structure of the first mounting part in Embodiment 2;

[0036] Figure 5 This is a schematic diagram of the drive block in Embodiment 2;

[0037] Figure 6 This is a schematic diagram of the structure of the second connecting rope in Embodiment 2;

[0038] Figure 7 This is a schematic diagram of the unwinding roller in Example 2;

[0039] Figure 8 This is a schematic diagram of the protective netting structure in Example 2;

[0040] Figure 9 This is a schematic diagram of the limiting component in Embodiment 2;

[0041] Figure 10 This is a schematic diagram of the connection between the clamping rollers in Example 2.

[0042] In the diagram, 1. Support plate; 11. Third guide groove; 2. Steel structure; 21. Transverse section; 211. Second guide groove; 212. Abutment block; 22. Longitudinal section; 3. I-beam; 31. First steel section; 311. First guide wheel; 312. First mounting part; 313. Mounting cavity; 314. First sliding groove; 315. First locking groove; 316. Drive block; 317. First connecting rope; 32. Second steel section; 321. Second connecting rope; 322. Fixing rope; 323. Second connecting block; 33. Third steel section; 331. Second guide wheel; 34. Unwinding roller; 341. Hanging frame; 342. Third locking groove; 343. Rotating frame; 35. Protective net; 36. Locking frame; 361. Second locking groove; 362. Rotating groove; 37. Locking roller; 371. Elastic rod; 372. Third limiting block; 373. Wedge-shaped surface; 374. Annular groove; 375. Elastic ring; 376. Operating part; 377. Clearance groove; 378. Locking hole; 38. Limiting component; 381. Sector block; 382. Second spring; 4. Drive component; 41. Gear; 42. Rack; 43. First spring; 44. First rotating shaft; 441. Second sliding groove; 442. First limiting block. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0044] Example 1:

[0045] Example 1 discloses temporary scaffolding for open areas, referring to Figure 1 The structure includes a support plate 1, a steel structure 2, and an I-beam 3. The support plate 1 is located at the cantilevered area and is pre-embedded between the two building sections during construction. Both ends of the support plate 1 are fixedly connected to the two building sections on either side. During construction, two steel structures 2 are pre-embedded between the two building sections. Two steel structures 2 are provided, located on either side of the support plate 1. The steel structures 2 are T-shaped and include a transverse section 21 and a longitudinal section 22. Both ends of the transverse section 21 are fixedly connected to the two building sections on either side. One end of the longitudinal section 22 is fixedly connected to the support plate 1, and the other end of the longitudinal section 22 is fixedly connected to the transverse section 21.

[0046] Reference Figure 1 Several I-beams 3 are provided, distributed along the length of the support plate 1, and scaffolding is fixedly installed on the I-beams 3. The I-beams 3 consist of several steel segments, which are sequentially spliced ​​and slidably connected to the longitudinal segment 22.

[0047] This embodiment also discloses a method for constructing temporary scaffolding in open areas, including the following steps:

[0048] Step S1: Embed the support plate 1 and steel structure 2;

[0049] Step S2: Move the steel segment onto the support plate 1;

[0050] Step S3: Install the steel segments on the longitudinal section 22, and splice several steel segments so that the length of the spliced ​​steel segments is greater than the length of the longitudinal section 22. Then slide the spliced ​​steel segments onto the longitudinal section 22 in sequence. Install multiple I-beams 3 in this way.

[0051] Step S4: Install scaffolding on I-beam 3.

[0052] The implementation principle of Example 1 is as follows: When constructing the building, steel structure 2 and support plate 1 are pre-embedded between the two buildings. When scaffolding needs to be installed, steel sections are transported to support plate 1 via elevators inside the building. The steel sections are then moved to support plate 1 and placed sequentially at the connection between support plate 1 and steel structure 2. The steel sections are then pushed outwards and welded sequentially to extend the I-beams 3. These I-beams 3 are then erected between support plate 1 and steel structure 2. Multiple I-beams 3 are installed between support plate 1 and steel structure 2 in this manner, and then scaffolding is installed on the I-beams 3.

[0053] Example 2:

[0054] The difference between Example 2 and Example 1 is that, referring to Figure 2 and Figure 3 The steel segment closest to the transverse segment 21 is the first steel segment 31, the steel segment farthest from the transverse segment 21 is the second steel segment 32, and the steel segment between the first steel segment 31 and the second steel segment 32 is the third steel segment 33. A first guide groove is formed on the upper surface of the longitudinal segment 22, and the length direction of the first guide groove is parallel to the length direction of the longitudinal segment 22. A second guide groove 211 is formed on the upper surface of the transverse segment 21, and the length direction of the second guide groove 211 is parallel to the length direction of the transverse segment 21. A first guide wheel 311 is provided on the lower surface of the first steel segment 31, and a first rotating shaft 44 is fixedly connected to the upper surface of the base of the first guide wheel 311. A first mounting part 312 is fixedly connected to the end of the first steel segment 31 away from the second steel segment 32. The first mounting part 312 has a through hole for the first rotating shaft 44 to rotate through, and a drive assembly 4 for driving the first rotating shaft 44 to rotate is provided in the first mounting part 312.

[0055] Reference Figure 3 The lower surface of the third steel section 33 is rotatably connected to the second guide wheel 331, and the upper surface of the support plate 1 is provided with a third guide groove 11. The length direction of the third guide groove 11 is parallel to the length direction of the support plate 1, and the second guide wheel 331 rolls in the third guide groove 11.

[0056] Reference Figure 4 The drive assembly 4 includes a gear 41, a rack 42, and a first spring 43 that drives the rack 42 to slide. A mounting cavity 313 is installed inside the first mounting part 312. A first rotating shaft 44 passes through the mounting cavity 313, and the gear 41 is located inside the mounting cavity 313, coaxially and fixedly connected to the peripheral wall of the first rotating shaft 44. A first sliding groove 314 is formed on the side wall of the mounting cavity 313. The length direction of the first sliding groove 314 is parallel to the length direction of the first steel segment 31. The rack 42 is slidably connected to the first sliding groove 314 and meshes with the gear 41. The first spring 43 is located inside the first sliding groove 314. One end of the first spring 43 is fixedly connected to the groove wall of the first sliding groove 314, and the other end of the first spring 43 is fixedly connected to the rack 42. Under normal conditions, the first spring 43 forces the rack 42 to slide, which in turn drives the guide wheel to rotate 90 degrees through the gear 41.

[0057] Reference Figure 3 , Figure 4 and Figure 5 The transverse segment 21 has an abutment block 212 corresponding to the longitudinal segment 22. The peripheral wall of the first rotating shaft 44 has a second sliding groove 441 radially formed. The first rotating shaft 44 is provided with a first limiting block 442 slidably connected to the second sliding groove 441. The inner wall of the through hole is provided with a first locking groove 315 for the first limiting block 442 to be locked. The first locking groove 315 is connected to the end face of the first mounting part 312. The first steel segment 31 is provided with a driving block 316 slidably connected to the first locking groove 315. The end of the first limiting block 442 near the driving block 316 has an arc-shaped surface adapted to the outer peripheral wall of the first rotating shaft 44. The sides of the first limiting block 442 and the driving block 316 that are close to each other are embedded with first magnets that attract each other. When the first limiting block 442 is locked in the first locking groove 315, the driving block 316 protrudes from the end face of the mounting part near the abutment block 212.

[0058] Reference Figure 4 and Figure 6 The first steel segment 31 is provided with a first connecting rope 317 connected to the rack 42. One end of the first connecting rope 317 passes through the first sliding groove 314 and is fixedly connected to the rack 42. The second steel segment 32 and the third steel segment 33 are both provided with second connecting ropes 321. The two ends of the second connecting ropes 321 are fixed by fixing ropes 322. The ends of the second connecting ropes 321 that are close to each other are fixedly connected to second connecting blocks 323. The side of the second connecting block 323 away from the second connecting rope 321 is embedded with a second magnet. The end of the first connecting rope 317 away from the rack 42 is fixed with a first connecting block. The side of the first connecting block that is close to the second connecting rope 321 is embedded with a second magnet.

[0059] Reference Figure 7 and Figure 8Each of the first steel section 31, the second steel section 32, and the third steel section 33 is equipped with an unwinding roller 34, which winds up a protective net 35. Taking the second steel section 32 as an example, the second steel section 32 has two chambers. The bottom wall of one of the chambers of the second steel section 32 is fixedly connected to two rotating frames 343. The two rotating frames 343 are distributed along the length of the second steel section 32. The unwinding roller 34 rotates through the rotating frame 343. A transmission key is provided on the end face of the unwinding roller 34 near the first steel section 31, and a keyway is provided on the end face of the other end of the unwinding roller 34 for the transmission key to be engaged.

[0060] Reference Figure 7 and Figure 8 The free end of the protective net 35 is fixedly connected to a clamping roller 37. The chambers of the first steel section 31 and the third steel section 33 on the side away from the unwinding roller 34 are equipped with clamping frames 36. The clamping frames 36 have a second clamping groove 361 for clamping the clamping roller 37 on the adjacent I-beam 3. The second clamping groove 361 on the third steel section 33 is equipped with a limiting component 38 for limiting the clamping roller 37.

[0061] Reference Figure 8 and Figure 9 The limiting component 38 includes a sector block 381 and a second spring 382. The second locking groove 361 has a rotating groove 362 in its groove wall. The sector block 381 is located within the rotating groove 362, with its tip rotatably connected to the groove wall of the rotating groove 362. One end of the sector block 381 is located within the second locking groove 361. The second spring 382 is located within the rotating groove 362, with one end fixedly connected to the groove wall of the rotating groove 362 and the other end fixedly connected to the straight side of the sector block 381. The second spring 382 forces the sector block 381 to rotate into the second locking groove 361.

[0062] Reference Figure 7 and Figure 8 The second steel section 32 is provided with a hanging frame 341, which is located above the rotating frame 343. There are two hanging frames 341, which are distributed along the length of the second steel section 32. The hanging frame 341 has a third locking groove 342 for locking the locking roller 37 on the adjacent second steel section 32. The steel section is provided with a third locking groove 342 for locking the locking roller 37. The opening of the second locking groove 361 faces obliquely upward.

[0063] Reference Figure 7 and Figure 10A plurality of elastic rods 371 are fixedly connected to the end face of the locking roller 37. The cross-section of the elastic rods 371 is arc-shaped, and the plurality of elastic rods 371 are arranged in a circular array around the axis of the locking rods. The other end face of the locking roller 37 is provided with a locking hole 378 for locking the elastic rods 371 on adjacent locking rollers 37. A third limiting block 372 is fixedly connected to the outer side of the end of the elastic rod 371 away from the locking roller 37. The hole wall of the locking hole 378 is provided with an annular groove 374 for locking the third limiting block 372. The outer side of the third limiting block 372 is provided with a wedge-shaped surface 373. When the wedge-shaped surface 373 abuts against the hole wall of the locking hole 378, the wedge-shaped surface 373 can force the elastic rod 371 to deform, so that the third limiting block 372 avoids the hole wall of the locking hole 378, so that the third limiting block 372 can be locked in the annular groove 374.

[0064] Reference Figure 7 and Figure 10 The locking roller 37 is provided with an elastic ring 375 located within an annular groove 374. The elastic ring 375 is sleeved on several third limiting blocks 372, and the inner side of the elastic ring 375 abuts against the side of the third limiting block 372. The elastic ring 375 is provided with an elastic notch. An operating part 376 is fixedly connected to both sides of the elastic ring 375 located at the elastic notch. The outer peripheral wall of the locking roller 37 is provided with a clearance groove 377 communicating with the annular groove 374, and the operating part 376 is located within the clearance groove 377.

[0065] The implementation principle of Embodiment 2 is as follows: A first guide wheel 311 is provided on the steel segment. When the steel segment is installed, the first guide wheel 311 slides in the first guide groove, thereby facilitating the advancement of the steel segment towards the transverse segment 21. After the entire I-beam 3 is installed, the first guide wheel 311 is driven to rotate 90 degrees by the drive assembly 4, so that the first guide wheel 311 can move in the second guide groove 211. After the entire I-beam 3 is installed, the I-beam 3 can be moved to one side. After the scaffold is installed, the first guide wheel 311 and the second guide wheel 331 can move, thereby adjusting the position of the scaffold.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Temporary scaffolding for open areas, characterized in that: The structure includes a support plate (1), a steel structure (2), and I-beams (3). The support plate (1) is located at the cantilevered area and is connected to the building on both sides. There are two steel structures (2), which are located on both sides of the support plate (1). The steel structures (2) are T-shaped, with one end connected to the building on both sides and the other end connected to the support plate (1). There are several I-beams (3), which are distributed along the length of the support plate (1). Each I-beam (3) consists of several steel segments, which are sequentially spliced ​​and slidably connected to the steel structure (2). Scaffolding is installed on the I-beams (3). The steel structure (2) includes a transverse section (21) and a longitudinal section (22). The two ends of the transverse section (21) are connected to the building on both sides. One end of the longitudinal section (22) is connected to the support plate (1), and the other end of the longitudinal section (22) is connected to the transverse section (21). The longitudinal section (22) has a first guide groove, and the transverse section (21) has a second guide groove (211). Each I-beam (3) is provided with a first guide wheel (311) on the steel segment closest to the transverse section (21). The base of the first guide wheel (311) is provided with a first rotating shaft (44). The first rotating shaft (44) is rotatably connected to the steel segment. The steel segment is provided with a drive assembly (4) to drive the first rotating shaft (44) to rotate. The steel segment farthest from the transverse section (21) is provided with a second guide wheel (331). The support plate (1) has a third guide groove (11) for the second guide wheel (331) to move. The drive assembly (4) includes a gear (41), a rack (42), and a first spring (43) that drives the rack (42) to slide. The gear (41) is coaxially disposed on the first rotating shaft (44). The rack (42) slides along the length of the steel segment and is connected to the steel segment. The rack (42) meshes with the gear (41). The first spring (43) forces the rack (42) to slide and drives the first guide wheel (311) to rotate 90 degrees through the gear (41). The transverse section (21) is provided with an abutment block (212) corresponding to the longitudinal section (22). The steel section is provided with a through hole for the first rotating shaft (44) to rotate through. The first rotating shaft (44) is radially slidably connected to a first limiting block (442). The inner wall of the through hole is provided with a first locking groove (315) for the first limiting block (442) to be locked. The steel section is provided with a driving block (316) slidably connected to the first locking groove (315). The end faces of the first limiting block (442) and the driving block (316) that are close to each other are provided with a first magnet that attracts each other. When the first limiting block (442) is locked in the first locking groove (315), the driving block (316) protrudes from the end face of the steel section that is close to the abutment block (212). The steel segment closest to the transverse section (21) is the first steel segment (31), and the first steel segment (31) is provided with a first connecting rope (317) connected to the rack (42). The steel segment farthest from the transverse section (21) is the third steel segment (33). The steel segment between the first steel segment (31) and the third steel segment (33) is the second steel segment (32). The second steel segment (32) and the third steel segment (33) are both provided with a second connecting rope (321). The two ends of the second connecting rope (321) are fixed by a fixing rope (322). The end of the first connecting rope (317) away from the rack (42) is provided with a first connecting block. The ends of the second connecting ropes (321) close to each other are provided with a second connecting block (323). The side of the second connecting block (323) close to the adjacent second connecting rope (321) is provided with a second magnet. The side of the first connecting block close to the second connecting rope (321) is provided with a second magnet.

2. The temporary scaffolding for the open area according to claim 1, characterized in that: The steel segment is provided with an unwinding roller (34), the unwinding roller (34) winds up a protective net (35), the free end of the protective net (35) is provided with a locking roller (37), and the other end of the steel segment away from the unwinding roller (34) is provided with a second locking groove (361) for locking the locking roller (37) on the adjacent I-beam (3), and the second locking groove (361) is provided with a limiting component (38) for limiting the locking roller (37).

3. The temporary scaffolding for the open area according to claim 2, characterized in that: The steel segment is provided with a third clamping groove (342) for clamping roller (37), and the opening of the second clamping groove (361) faces obliquely upward.

4. The temporary scaffolding for the open area according to claim 3, characterized in that: The side of the clamping roller (37) is coaxially provided with a clamping rod, and the end face of the clamping rod is provided with a plurality of elastic rods (371). The plurality of elastic rods (371) are arranged in a circumferential array. The outer side of the elastic rod (371) away from the clamping roller (37) is provided with a third limiting block (372). The other end face of the clamping roller (37) is provided with a clamping hole (378) for clamping adjacent clamping rollers (37). The wall of the clamping hole (378) is provided with an annular groove (374) for clamping the third limiting block (372). The outer side of the third limiting block (372) is provided with a wedge-shaped surface (373). When the wedge-shaped surface (373) abuts against the wall of the clamping hole (378), the wedge-shaped surface (373) can force the elastic rod (371) to deform so that the third limiting block (372) avoids the wall of the clamping hole (378).

5. The temporary scaffolding for the open area according to claim 4, characterized in that: The locking roller (37) is provided with an elastic ring (375), the elastic ring (375) is provided with an elastic notch, and the elastic ring (375) is sleeved on a plurality of third limiting blocks (372).

6. The method for constructing temporary scaffolding in an open area according to claim 5 includes the following steps: Step S1: Embed the support plate (1) and steel structure (2); Step S2: Transport the steel segment onto the support plate (1); Step S3: Install the steel segments on the longitudinal section (22) and splice several steel segments so that the length of the spliced ​​steel segments is greater than the length of the longitudinal section (22). Then slide the spliced ​​steel segments to the longitudinal section (22) in sequence, and install multiple I-beams (3) in this way. Step S4: Install scaffolding on the I-beam (3).

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