Construction method of edge vertical hole steel protection device

Abstract

The invention discloses a construction method of a limb vertical hole steel protection device, which comprises the following steps of: 1, fixedly mounting a lifting system on a structural plate and positioning the lifting system above a structural layer to be decorated; secondly, the vertical protection systems are assembled according to the protection height, and the multiple vertical protection systems are sequentially and reliably connected; thirdly, the vertical protection system is reliably connected with the lifting system; fourthly, the vertical protection system is lifted to the preset position of a vertical hole of the to-be-decorated structural layer through the lifting system; fifthly, one set of horizontal protection system is installed on the structural reverse ridge of the to-be-decorated structural layer in a fastened mode, and the other set of horizontal protection system is installed on the structural reverse ridge of the upper layer of the to-be-decorated structural layer in a fastened mode; sixthly, the horizontal protection system is reliably connected with the vertical protection system, so that the vertical hole of the to-be-decorated structural layer forms a closed structure, according to the construction method, the construction and installation efficiency and the material repeated utilization rate are improved while safety is guaranteed, and the labor and material cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for a steel protective device for vertical openings near edges. Background Technology

[0002] During building decoration and renovation construction, the traditional "five-edge" protection method for balcony structures uses steel pipes and skirting boards or vertical safety nets, with a protection height of only 1.2m. This method is mainly suitable for the protection of edges and openings on standard floors (around 3m). However, current building structures have higher floor heights, and the exterior facades of balconies often have odd or even floor heights, typically 6-7m. Using the above protection method presents the following problems: the sealing of openings at the building edges is not tight or rigid enough; wall and ceiling work extends above the edge protection; workers are involved in working at heights; construction materials are at risk of falling, resulting in significant safety hazards during construction; safety belts are required for edge protection during decoration work, and due to safety hazards, construction efficiency is slow, severely affecting the construction progress, leading to low labor utilization and increased construction costs; installation efficiency is slow and material reuse rate is low, resulting in increased labor and material costs. Summary of the Invention

[0003] One of the objectives of this invention is, at least, to provide a construction method for a steel protective device for vertical openings near edges, addressing the problems existing in the prior art. This method can effectively improve the integrity of the closure of vertical openings near edges, provide a safe environment for working at heights, reduce the risks of working at heights, ensure safety while improving construction and installation efficiency, increasing material reuse rate, and reducing labor and material costs.

[0004] To achieve the above objectives, the technical solution adopted by the present invention includes the following aspects.

[0005] A construction method for a steel protective device for a vertical opening near an edge includes the following construction steps: Step 1: Securely install the lifting system on the structural slab, above the structural layer to be renovated; Step 2: Assemble the vertical protection system according to the protection height, so that multiple vertical protection systems are reliably connected in sequence to form a set of vertical protection systems; Step 3: Reliably connect the vertical protection system to the lifting system; Step 4: Use the lifting system to lift the vertical protection system to the preset position of the vertical opening in the structural layer to be decorated; Step 5: Securely install one set of horizontal protection system on the structural retaining wall of the structural layer to be renovated, and securely install another set of horizontal protection system on the structural retaining wall of the upper layer of the structural layer to be renovated. Each set of horizontal protection system includes fastening components and a horizontal protective net. Step six: Reliably connect the horizontal protection system and the vertical protection system to form a closed structure for the vertical openings in the structural layer to be renovated.

[0006] Preferably, in step one, the lifting system includes a base and a cantilever. The base includes a horizontal component, a vertical component, and a diagonal brace. The horizontal component is located on top of the vertical component. The diagonal brace is angled and its first end is fixedly connected to the vertical component. Two base anchor plates are fixedly installed at the bottom of the vertical component and the second end of the diagonal brace, respectively. Multiple anchor holes are provided on the base anchor plates. Anchor bolts are used to pass through the anchor holes to securely connect the base anchor plates to the structural plate, and the second end of the diagonal brace is kept away from the building's exterior wall. The cantilever has a triangular structure. The cantilever is fixedly installed on the base, with the bottom of the cantilever fixedly connected to the top of the horizontal component of the base. The top of the cantilever extends outside the building, and a front pulley is installed on the top of the cantilever.

[0007] Preferably, in step one, the lifting system further includes a motor, a motor support, and a wire rope. The motor support has a U-shaped structure and is fixedly installed on a horizontal component of the base, away from the building's exterior wall. The motor is placed on the motor support, and a rear pulley is installed on the motor. A rotating shaft is also installed on the motor. The first end of the wire rope is fixedly installed on the rotating shaft of the motor, and the second end of the wire rope is passed through the rear pulley and the front pulley in sequence.

[0008] Preferably, in step two, each vertical protection system includes a vertical frame, a horizontal frame, and a vertical protective net. Multiple vertical protective net hanging rings are installed side by side along the length of the vertical and horizontal frames. Multiple frame connecting rings are also installed side by side along the length of the horizontal frame. The two vertical frames and two horizontal frames are fixedly connected end to end to form a rectangular structure, with the vertical protective net hanging rings located within the rectangular structure and the frame connecting rings located on the side of the two horizontal frames that are far apart from each other. The vertical protective net is reliably connected within the rectangular structure through the vertical protective net hanging rings. The frame connecting rings on two adjacent vertical protection systems in each group are reliably connected. The vertical protective net is a flame-retardant dense mesh safety net.

[0009] Preferably, in step three, the second end of the wire rope of the lifting system is reliably connected to the frame connecting ring of the vertical protection system, and the frame connecting ring is located at one end after the connection of the multiple vertical protection systems.

[0010] Preferably, in step four, the motor of the lifting system drives the rotating shaft on the motor to rotate, and the steel wire rope lifts the vertical protection system under the rotation of the rotating shaft, lifting the vertical protection system to the preset position of the vertical opening of the structural layer to be decorated.

[0011] Preferably, in step five, the fastening components adopt a screw-type step-by-step tightening structure. Multiple fastening components are installed side by side on the structural sill along the length direction of the sill. Each fastening component includes a waist plate, a front wing plate, a rear wing plate, and a fixing bolt. The front wing plate and the rear wing plate form a U-shaped structure with the waist plate. The distance between the front wing plate and the rear wing plate is 3-5 cm greater than the thickness of the structural sill. A horizontal protective net hanging hole is opened at the end of the waist plate near the front wing plate, and a bolt hole is opened on the rear wing plate. The side of the front wing plate near the rear wing plate is pressed tightly against the side of the structural sill near the building's exterior wall. The fixing bolt passes through the bolt hole and is pressed against the side of the structural sill away from the building's exterior wall. An anti-slip rubber plug is provided at the end of the fixing bolt that contacts the structural sill.

[0012] Preferably, in step five, the horizontal protective net is reliably connected to the fastening assembly through the horizontal protective net hanging hole on the waist plate.

[0013] Preferably, in step six, multiple horizontal protective net hanging rings are installed side by side along the length of the transverse frame. When the vertical protection system is raised to the preset position of the vertical opening of the structural layer to be decorated, the horizontal protective net hanging rings are located on the side of the transverse frame closer to the building's exterior wall, and the horizontal protective nets are reliably connected to the vertical protection system through the horizontal protective net hanging rings.

[0014] Preferably, the structural slab is a balcony structural slab or a roof structural slab; when the structural layer to be decorated is a structural layer below the top floor of the building, the structural curb is a balcony structural curb; when the structural layer to be decorated is the top floor of the building, the structural curb of the structural layer to be decorated is a balcony structural curb, and the structural curb of the upper layer of the structural layer to be decorated is a roof structural curb.

[0015] In summary, by adopting the above technical solution, the present invention has at least the following beneficial effects: This construction method, through the use of modular assembly processes of different systems, improves construction and installation efficiency and material reuse rate while ensuring safety, and reduces labor and material costs. The vertical and horizontal protection systems use rigid materials, which effectively improve the integrity of the closure of vertical openings near the edge, provide a safe environment for working at height, and reduce the risk of construction at height. The lifting system uses motor braking to adjust the height of the vertical protection system, which can be adjusted according to different vertical opening heights and construction surface heights, with high adaptability and high motor braking efficiency. Attached Figure Description

[0016] Figure 1 This is a construction flowchart of a steel protective device for vertical openings near the edge, which is an exemplary embodiment of the present invention.

[0017] Figure 2This is a schematic diagram of the steel protective device for vertical openings near the edge.

[0018] Figure 3 This is a schematic diagram of the vertical protection system.

[0019] Figure 4 for Figure 3 Section 1-1.

[0020] Figure 5 This is a structural diagram showing the relative positions of the horizontal protection system, the vertical protection system, and the structural retaining wall.

[0021] Figure 6 for Figure 5 Enlarged schematic diagram of the fastening assembly.

[0022] Figure 7 This is a structural schematic diagram of the fastening assembly from another perspective.

[0023] Figure 8 This is a structural schematic diagram from another perspective showing the relative positions of the fastening components and the structural countersill.

[0024] Figure 9 This is a structural schematic diagram from another perspective showing the relative positions of the horizontal protection system, the vertical protection system, and the structural anti-reflector.

[0025] Figure 10 for Figure 2 Enlarged diagram of point A in the middle.

[0026] The diagram is labeled as follows: 1-Vertical protection system, 11-Vertical frame, 12-Horizontal frame, 13-Vertical protection net, 14-Vertical protection net hanging ring, 15-Frame connecting ring, 16-Horizontal protection net hanging ring, 2-Horizontal protection system, 21-Fastening component, 211-Waist plate, 212-Front wing plate, 213-Rear wing plate, 214-Fixing bolt, 215-Anti-slip rubber plug, 216-Horizontal protection net hanging hole, 22-Horizontal protection net, 3-Lifting system, 31-Base, 311-Horizontal component, 312-Vertical component, 313-Diagonal brace, 32-Cantilever, 33-Motor, 34-Motor support, 35-Wire rope, 36-Base anchor plate, 37-Anchor bolt, 38-Front pulley, 39-Rear pulley, 4-Structural countersunken curb, 5-Structural plate. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the objectives, technical solutions, and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0028] In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0029] This embodiment illustrates the construction method of a steel protective device for vertical openings near edges. Figure 1 The construction process flowchart is shown for reference. Figure 2 The steel protective device for vertical openings near edges includes a vertical protection system 1, a horizontal protection system 2, and a lifting system 3. The vertical protection system 1 and the horizontal protection system 2 are made of rigid materials. The lifting system 3 uses a motor brake to adjust the height of the vertical protection system 1. The construction method of the steel protective device for vertical openings near edges includes the following steps: Step 1: Securely install the lifting system 3 onto the structural slab 5, positioning it above the structural layer to be decorated; (Refer to...) Figure 10The lifting system 3 includes a base 31 and a cantilever 32. The base 31 is fixedly installed on the structural plate 5 via a base anchor plate 36. The base 31 is made of rigid material and includes a horizontal component 311, a vertical component 312, and a diagonal brace 313. The horizontal component 311 is located at the top of the vertical component 312, and the diagonal brace 313 is obliquely arranged. The first end of the diagonal brace 313 is fixedly connected to the vertical component 312. The base anchor plate 36 is made of galvanized steel plate with a thickness of 5mm. The base anchor plate 36 has multiple anchoring holes. One base anchor plate 36 is fixedly installed at the bottom of the vertical component 312, and another base... Anchor plate 36 is fixedly installed at the second end of diagonal brace 313. The first and second ends of diagonal brace 313 are opposite each other. The two base anchor plates 36 are respectively fastened to structural plate 5 by multiple anchor bolts 37, so that each anchor bolt 37 passes through a corresponding anchor hole, and the second end of diagonal brace 313 is away from the building exterior wall. The anchor bolts 37 are expansion bolts with a diameter of 10mm, and the diameter of the anchor hole is adapted to the diameter of the anchor bolt. The cantilever 32 is made of galvanized square tubing with specifications of 50mm*50mm*2mm welded into a triangular structure. The cantilever 32 is fixedly installed on base 31, so that the bottom of cantilever 32 (triangular) The bottom edge of the triangular shape is fixedly connected to the top of the horizontal component 311 of the base 31. The top of the cantilever 32 (the vertex corresponding to the bottom edge of the triangular shape) extends outside the building, and a front pulley 38 is installed on the top of the cantilever 32. The front pulley 38 is a small pulley with a diameter of 30mm. The lifting system 3 also includes a motor 33, a motor support 34, and a wire rope 35. The motor support 34 is made of galvanized square tubing with specifications of 50mm*50mm*2mm welded into a U-shaped structure. The motor support 34 is fixedly installed on the horizontal component 311 of the base 31, away from the building's exterior wall. The motor 33 is placed on the motor support 34. The motor 33 is a 1t lifting capacity motor. The motor 33 is used to brake and lift the vertical protection system 1 to the preset position of the vertical opening of the structural layer to be decorated. A rear pulley 39 is installed on the motor 33. The rear pulley 39 is a large pulley with a diameter of 70mm. A rotating shaft is also installed on the motor 33. The first end of the steel wire rope 35 is fixedly installed on the rotating shaft of the motor 33. The second end of the steel wire rope 35 is passed through the rear pulley 39 and the front pulley 38 in sequence. The steel wire rope 35 is a 10mm diameter galvanized steel wire rope. In actual use, the structural plate 5 can be a balcony structural plate or a roof structural plate. Step 2: Assemble the vertical protection system 1 according to the protection height, so that multiple vertical protection systems 1 are reliably connected in sequence to form a set of vertical protection systems 1. Each vertical protection system 1 includes a vertical frame 11, a horizontal frame 12, and a vertical protective net 13. The vertical frame 11 and the horizontal frame 12 are both made of galvanized square steel pipe with a specification of 50mm*50mm*2mm. The length of the vertical frame 11 is 0.8-1.2m, preferably 1m. The length of the horizontal frame 12 is adapted to the width of the vertical opening of the structural layer to be decorated (multiple sets of vertical protection systems 1 can also be installed horizontally side by side according to the width of the vertical opening of the structural layer to be decorated, so that the horizontally adjacent vertical frames 11 are close to each other or reliably connected. In this case, the length of the horizontal frame 12 is 0.8-1.2m, preferably 1m). Multiple vertical protection nets are installed side by side along the length direction of the vertical frame 11 and the horizontal frame 12. The vertical protective netting is secured by a galvanized steel ring 14 with a diameter of 40mm. Two vertical frames 11 and two horizontal frames 12 are fixedly connected end-to-end to form a rectangular structure, with the vertical protective netting ring 14 located within this rectangular structure. The vertical protective netting 13 is made of flame-retardant, dense-mesh safety netting, and is reliably connected to this rectangular structure via the vertical protective netting ring 14. Multiple frame connecting rings 15 are also installed side-by-side along the length of the horizontal frames 12. These frame connecting rings 15 are galvanized steel rings with a diameter of 40mm. When two vertical frames 11 and two horizontal frames 12 are fixedly connected end-to-end to form a rectangular structure, the frame connecting rings 15 are located on the side of the two horizontal frames 12 that are far apart from each other, reliably connecting the frame connecting rings 15 on adjacent vertical protective systems 1 in each group. Step 3: Reliably connect the vertical protection system 1 to the lifting system 3; reliably connect the second end of the wire rope 35 of the lifting system 3 to the skeleton connecting ring 15 of the vertical protection system 1, which is located at one end after the vertical protection system 1 is connected. In practical application, when the width of the vertical opening in the structural layer to be renovated is no more than 1m and only one set of vertical protection system 1 is installed, a lifting system 3 can be installed on the structural slab 5, with the lifting system 3 located on the vertical axis of the vertical opening in the structural layer to be renovated. The steel wire rope 35 of the lifting system 3 is vertically tied to the frame connecting ring 15 in the middle of the horizontal frame 12 (at this time, a frame connecting ring 15 is set in the middle of the horizontal frame 12). When the width of the vertical opening in the structural layer to be renovated is greater than 1m and only one set of vertical protection system 1 is installed, two lifting systems 3 can be installed on the structural slab 5, with the two lifting systems 3 respectively close to both sides of the vertical opening in the structural layer to be renovated. The steel wire ropes 35 of the two lifting systems 3 are vertically suspended on the frame connecting rings 15 near both ends of the horizontal frame 12. When the width of the vertical opening of the structural layer to be decorated is relatively wide (e.g., greater than 2m), the number of lifting systems 3 can be increased. The steel wire ropes 35 of the additional lifting systems 3 are vertically suspended on the frame connecting rings 15 near the middle of the horizontal frame 12. When the width of the vertical opening of the structural layer to be decorated is greater than 1m and multiple sets of vertical protection systems 1 are set up horizontally side by side, each set of vertical protection systems 1 corresponds to two lifting systems 3. The steel wire ropes 35 of the two lifting systems 3 are vertically suspended on the corresponding frame connecting rings 15 of the vertical protection system 1. Approaching both ends of the transverse frame 12, and ensuring that the vertical protection systems 1 of two adjacent transverse groups are close together or reliably connected; Step 4: The vertical protection system 1 is lifted to the preset position of the vertical opening of the structural layer to be decorated by the lifting system 3; the motor 33 of the lifting system 3 drives the rotating shaft on the motor 33 to rotate, and the steel wire rope 35 lifts the vertical protection system 1 under the rotation of the rotating shaft, thus lifting the vertical protection system 1 to the preset position of the vertical opening of the structural layer to be decorated. Step 5: Securely install one set of horizontal protection system 2 onto the structural retaining wall 4 of the structural layer to be renovated, and securely install another set of horizontal protection system 2 onto the structural retaining wall 4 of the upper layer of the structural layer to be renovated. Each set of horizontal protection system 2 includes a fastening component 21 and a horizontal protective net 22. When the structural layer to be renovated is a structural layer below the top floor of the building, the structural retaining wall 4 is a balcony structural retaining wall. When the structural layer to be renovated is the top floor of the building, the structural retaining wall 4 of the structural layer to be renovated is a balcony structural retaining wall, and the structural retaining wall 4 of the upper layer of the structural layer to be renovated is a roof structural retaining wall. Securely install the fastening component 21 onto the structural retaining wall 4. The fastening component 21 adopts a screw-type step-by-step tightening structure (a type of building material). Fasteners (achieved through a screw structure for rapid tightening and fixing) are used. Multiple fastening components 21 are installed side-by-side on the structural retaining wall 4 along its length. Each fastening component 21 includes a waist plate 211, a front wing plate 212, a rear wing plate 213, and fixing bolts 214. The waist plate 211 is made of galvanized cast aluminum material with a thickness of 10mm and a length of 270mm. The front wing plate 212 and rear wing plate 213 are both made of galvanized cast aluminum material with a thickness of 10mm and a flange width of 40mm. The front wing plate 212 and rear wing plate 213 are located at opposite ends of the waist plate 211, forming a U-shaped structure with the waist plate 211. The space between the front wing plate 212 and rear wing plate 213... The distance is greater than the thickness of the structural retaining wall 4 (e.g., greater than 3-5cm). A horizontal protective netting hanging hole 216 with a diameter of 20mm is provided at one end of the waist plate 211 near the front wing plate 212. Bolt holes are provided on the rear wing plate 213. The side of the front wing plate 212 near the rear wing plate 213 is tightly attached to the side of the structural retaining wall 4 closest to the building's exterior wall. A fixing bolt 214, passing through the bolt hole, is then pressed against the side of the structural retaining wall 4 furthest from the building's exterior wall. The fixing bolt 214 uses a 10mm diameter threaded rod, and the diameter of the bolt hole matches the diameter of the fixing bolt 214. The end of the fixing bolt 214 contacts the structural retaining wall 4. The part is pre-installed with anti-slip rubber plugs 215. The anti-slip rubber plugs 215 are made of synthetic rubber material with an inner diameter of 10mm. The anti-slip rubber plugs 215 are used to increase friction and improve the connection stability between the fixing bolts 214 and the structural retaining wall 4. The horizontal protective net 22 is made of flame-retardant dense mesh net. The length of the horizontal protective net 22 is adapted to the width of the vertical opening of the structural layer to be decorated (or according to the width of the vertical opening of the structural layer to be decorated, multiple horizontal protective nets 22 are installed side by side in the horizontal direction so that adjacent horizontal protective nets 22 are close to each other or reliably connected). The horizontal protective net 22 is reliably connected to the fastening component 21 through the horizontal protective net hanging hole 216 on the waist plate 211. Step six: Reliably connect the horizontal protection system 2 and the vertical protection system 1 to form a closed structure for the vertical opening of the structural layer to be decorated; multiple horizontal protective net hanging rings 16 are also installed side by side along the length of the horizontal frame 12. The horizontal protective net hanging rings 16 are galvanized steel rings with a diameter of 40mm. When the vertical protection system 1 is raised to the preset position of the vertical opening of the structural layer to be decorated, the horizontal protective net hanging rings 16 are located on the side of the horizontal frame 12 closest to the building's exterior wall, and the horizontal protective net 22 is reliably connected to the vertical protection system 1 through the horizontal protective net hanging rings 16 on the horizontal frame 12.

[0030] The above description is merely a detailed illustration of specific embodiments of the present invention and is not intended to limit the invention. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for a steel protective device for a vertical opening near an edge, characterized in that, The construction steps include the following: Step 1: Fix the lifting system (3) on the structural plate (5) and position it above the structural layer to be decorated; Step 2: Assemble the vertical protection system (1) according to the protection height, so that multiple vertical protection systems (1) are reliably connected in sequence to form a set of vertical protection systems (1). Step 3: Reliably connect the vertical protection system (1) to the lifting system (3); Step 4: Lift the vertical protection system (1) to the preset position of the vertical opening of the structural layer to be decorated using the lifting system (3); Step 5: Securely install one set of horizontal protection system (2) on the structural sill (4) of the structural layer to be decorated, and securely install another set of horizontal protection system (2) on the structural sill (4) of the upper layer of the structural layer to be decorated. Each set of horizontal protection system (2) includes a fastening component (21) and a horizontal protection net (22). Step 6: Reliably connect the horizontal protection system (2) and the vertical protection system (1) to form a closed structure for the vertical opening of the structural layer to be decorated.

2. The construction method of the steel protective device for vertical openings near edges according to claim 1, characterized in that, In step one, the lifting system (3) includes a base (31) and a cantilever (32). The base (31) includes a horizontal component (311), a vertical component (312), and a diagonal brace (313). The horizontal component (311) is located on top of the vertical component (312). The diagonal brace (313) is obliquely positioned and its first end is fixedly connected to the vertical component (312). Two base anchor plates (36) are fixedly installed at the bottom of the vertical component (312) and the second end of the diagonal brace (313), respectively. The base anchor plates (36) are... Multiple anchoring holes are provided. Anchoring bolts (37) are used to pass through the anchoring holes to fasten the base anchor plate (36) to the structural plate (5) and to keep the second end of the diagonal brace (313) away from the building exterior wall. The cantilever (32) is a triangular structure. The cantilever (32) is fixedly installed on the base (31) so that the bottom of the cantilever (32) is fixedly connected to the top of the horizontal component (311) of the base (31). The top of the cantilever (32) extends out of the building and a front pulley (38) is installed on the top of the cantilever (32).

3. The construction method of the steel protective device for vertical openings near edges according to claim 2, characterized in that, In step one, the lifting system (3) also includes a motor (33), a motor support (34) and a wire rope (35). The motor support (34) has a U-shaped structure. The motor support (34) is fixedly installed on the horizontal component (311) of the base (31) and away from the building exterior wall. The motor (33) is placed on the motor support (34). A rear pulley (39) is installed on the motor (33). A rotating shaft is also installed on the motor (33). The first end of the wire rope (35) is fixedly installed on the rotating shaft of the motor (33). The second end of the wire rope (35) is passed through the rear pulley (39) and the front pulley (38) in sequence.

4. The construction method of the steel protective device for vertical openings near edges according to claim 3, characterized in that, In step two, each vertical protection system (1) includes a vertical frame (11), a horizontal frame (12), and a vertical protective net (13). Multiple vertical protective net hanging rings (14) are installed side by side along the length of the vertical frame (11) and the horizontal frame (12). Multiple frame connecting rings (15) are also installed side by side along the length of the horizontal frame (12). The two vertical frames (11) and the two horizontal frames (12) are fixedly connected end to end to form a rectangular structure, so that the vertical protective net hanging rings (14) are located inside the rectangular structure, and the frame connecting rings (15) are located on the side away from each other of the two horizontal frames (12). The vertical protective net (13) is reliably connected to the rectangular structure through the vertical protective net hanging rings (14). The frame connecting rings (15) on the two adjacent vertical protection systems (1) in each group are reliably connected. The vertical protective net (13) is a flame-retardant dense mesh safety net.

5. The construction method of the steel protective device for vertical openings near edges according to claim 4, characterized in that, In step three, the second end of the wire rope (35) of the lifting system (3) is reliably connected to the skeleton connecting ring (15) of the vertical protection system (1), which is located at one end after the connection of the multiple vertical protection systems (1).

6. The construction method of the steel protective device for vertical openings near edges according to claim 5, characterized in that, In step four, the motor (33) of the lifting system (3) drives the rotating shaft on the motor (33) to rotate, and the steel wire rope (35) lifts the vertical protection system (1) under the rotation of the rotating shaft, lifting the vertical protection system (1) to the preset position of the vertical opening of the structural layer to be decorated.

7. The construction method of the steel protective device for vertical openings near edges according to claim 6, characterized in that, In step five, the fastening assembly (21) adopts a screw-type step-by-step tightening structure. Multiple fastening assemblies (21) are installed side by side on the structural inverted curb (4) along the length direction of the inverted curb (4). Each fastening assembly (21) includes a waist plate (211), a front wing plate (212), a rear wing plate (213), and a fixing bolt (214). The front wing plate (212) and the rear wing plate (213) form a U-shaped structure with the waist plate (211). The distance between the front wing plate (212) and the rear wing plate (213) is greater than that between the structural inverted curb (4). The thickness is 3-5cm. The waist plate (211) has a horizontal protective net hanging hole (216) at one end near the front wing plate (212). The rear wing plate (213) has a bolt hole. The side of the front wing plate (212) near the rear wing plate (213) is tightly attached to the side of the structural inverted wall (4) near the building exterior wall. The fixing bolt (214) is passed through the bolt hole and pressed against the side of the structural inverted wall (4) away from the building exterior wall. The end of the fixing bolt (214) that contacts the structural inverted wall (4) is provided with an anti-slip rubber plug (215).

8. The construction method of the steel protective device for vertical openings near edges according to claim 7, characterized in that, In step five, the horizontal protective net (22) is reliably connected to the fastening assembly (21) through the horizontal protective net hanging hole (216) on the waist plate (211).

9. The construction method of the steel protective device for vertical openings near edges according to claim 8, characterized in that, In step six, multiple horizontal protective net hanging rings (16) are installed side by side along the length of the transverse frame (12). When the vertical protection system (1) is raised to the preset position of the vertical opening of the structural layer to be decorated, the horizontal protective net hanging rings (16) are located on the side of the transverse frame (12) close to the building's exterior wall, and the horizontal protective net (22) is reliably connected to the vertical protection system (1) through the horizontal protective net hanging rings (16).

10. The construction method of the steel protective device for vertical openings near edges according to claim 1, characterized in that, The structural slab (5) is a balcony structural slab or a roof structural slab; when the structural layer to be decorated is a structural layer below the top floor of the building, the structural sill (4) is a balcony structural sill; when the structural layer to be decorated is the top floor of the building, the structural sill (4) of the structural layer to be decorated is a balcony structural sill, and the structural sill (4) of the upper layer of the structural layer to be decorated is a roof structural sill.

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