Steel structure high-altitude operation safety protection device and steel structure high-altitude operation device

Abstract

This utility model relates to the field of precast steel structure component construction technology, and particularly to a safety protection device for high-altitude operations on steel structures and a high-altitude operation device for steel structures. The device includes a base plate, which provides a support platform for construction workers. The base plate has a connecting part for detachable connection to a fastening frame on a steel structure column. The edges of the base plate are provided with protective components to prevent workpieces and construction workers from falling. These protective components surround the steel structure column and the base plate. This utility model, by setting a base plate on the steel structure column, allows construction workers to stand on the base plate for construction, thus providing support and preventing the danger of workers being suspended in the air by cranes. The protective components at the edges of the base plate can catch accidentally falling workpieces or construction workers, ensuring safety during the construction process.

Description

Technical Field

[0001] This utility model relates to the field of construction technology of precast steel structure components, and in particular to a safety protection device for high-altitude operations of steel structures and a high-altitude operation device for steel structures. Background Technology

[0002] Most industrial plants need to meet requirements for large spans, wheelbases, and high spatial structures. To reduce costs, steel structures are typically used in their construction. Steel structures offer high strength and toughness, enabling them to withstand greater loads and are widely used in the design and construction of various large-scale factory structures.

[0003] Steel structures are mainly composed of columns, longitudinal beams, transverse beams, purlins, and various types of steel plates and connectors. After design, they are uniformly produced and processed by steel structure manufacturers, transported to the construction site, and assembled on-site by workers, and then hoisted and assembled at high altitude. The connection methods are mainly high-strength bolt connections and welding, with a small part using prefabricated structures.

[0004] During steel structure installation, cranes typically lift workers onto the steel structure columns. They are then secured to the columns using ropes, straps, and temporary pipe clamps before the steel structure is connected and installed. Alternatively, another crane may be used to lift workers throughout the process, allowing them to work in the air. Regardless of the method, workers are positioned at high altitudes, which is risky, difficult, and lacks a stable support point, making on-site construction extremely challenging. Furthermore, various small connectors, welded parts, auxiliary materials, and construction tools are all carried by workers or transported in large frames by crane to high altitudes, making them extremely prone to falling or dropping, resulting in falling object accidents. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the background art, this application provides a safety protection device for high-altitude operations on steel structures and a high-altitude operation device for steel structures.

[0006] A safety protection device for high-altitude operations on steel structures, characterized in that it includes a base plate, which provides a support platform for construction workers. The base plate is provided with a connecting part for detachable connection to a fastening frame on a steel structure column. The edge of the base plate is provided with a protective component for preventing workpieces and construction workers from falling. The protective component surrounds the steel structure column and the base plate.

[0007] In one embodiment, the connecting part includes a movable rod, which is hinged to the side of the base plate near the steel structure column. The movable rod is provided with a limiting hole, which is used to detachably connect the movable rod to the fastening frame via a pin.

[0008] As one embodiment, it also includes a reinforcing plate. The connecting part is disposed on the side of the base plate near the steel structure column. The connecting part is used to connect with the two sides of the fastening frame. The reinforcing plate is used to connect the connecting parts on the same side of the two fastening frames. Both ends of the reinforcing plate are provided with limiting holes for insertion with the corresponding pins.

[0009] In one embodiment, the base plate includes a first support plate, a second support plate, and a side plate. The movable rod is hinged to the side of the first support plate and the second support plate near the steel structure column. The first support plate and the second support plate are connected by the side plate, which is located on both sides of the movable rod. The first support plate and the second support plate are detachably connected to the side plate by insert rods.

[0010] In one embodiment, both the first support plate and the second support plate are provided with connecting straps, the other end of which is connected to the adjacent movable rod. The connection point of the movable rod, the connecting strap, and the first support plate or the second support plate forms a triangle.

[0011] In one embodiment, the protective assembly includes a safety net and spaced-apart mounting rods, the mounting rods being disposed at the edge of the base plate, and the safety net being installed between adjacent mounting rods.

[0012] In one embodiment, a rotating frame is hinged to the bottom of the mounting rod, and a plug is provided on the rotating frame. The edge of the base plate is provided with mounting holes corresponding to the plug at intervals. The mounting rod is inserted into the corresponding mounting holes through the rotating frame and the plug. The safety net is deformable.

[0013] In one embodiment, the mounting rod includes a multi-section telescopic rod, which comprises nested segments arranged sequentially. The segment closest to the base plate is hinged to the rotating frame. Each segment is provided with spaced-apart connectors. The safety net connects the connectors of adjacent telescopic rods. A limit clip is provided at the end of the segment away from the adjacent base plate. The limit clip is used to restrict the range of motion of the segment among adjacent segments.

[0014] As one embodiment, the connector is detachably connected to the segment.

[0015] A steel structure high-altitude operation device includes the fastening frame and the steel structure high-altitude operation safety protection device as described in any of the above claims. The fastening frame is symmetrically arranged on both sides of the steel structure column, and the symmetrically arranged fastening frame clamps the steel structure column in the middle to fix the fastening frame on the steel structure column. The fastening frame is provided with a connecting lug corresponding to the movable rod, and the connecting lug is provided with a insertion hole corresponding to the limiting hole of the movable rod. The pin passes through the insertion hole and the limiting hole to connect the corresponding connecting lug to the movable rod.

[0016] The beneficial effects of this application are:

[0017] 1. This utility model provides support for construction workers by setting a base plate on the steel structure column, allowing them to stand on the base plate for construction and preventing them from being suspended in the air by cranes. Protective components are set at the edges of the base plate to catch any workpieces or construction workers that fall accidentally, ensuring safety during the construction process.

[0018] Other technical solutions of this utility model can also achieve the following technical effects:

[0019] 2. By setting up reinforcing plates, the connection strength of the device can be improved, ensuring the stability of the device and reducing the probability of danger.

[0020] 3. By dividing the base plate into a first support plate, a second support plate, and side plates, the base plate can be freely spliced ​​and disassembled. When not in use on the ground, disassembling the base plate can save space. When the base plate needs to be installed on the fastening frame, splicing the first support plate, the second support plate, and the side plates can reduce the difficulty of lifting and installing the entire base plate.

[0021] 4. By setting a connecting strip between the first support plate and the movable rod, and setting a connecting strip between the second support plate and the movable rod, the movable rod can pull the first support plate or the second support plate through the connecting strip, thereby improving the support strength of the first support plate and the second support plate and ensuring the safety of construction personnel when working on the base plate.

[0022] 5. By hinged to a rotating frame at the bottom of the mounting rod, the mounting rod can rotate around the hinge point of the rotating frame. When the mounting rod rotates to a horizontal position, the safety net unfolds horizontally to provide fall protection; when the mounting rod rotates to a vertical position, the safety net retracts, which can reduce the space occupied.

[0023] 6. The safety net is telescopic and removable, with detachable, spaced segments on each section, allowing the protection range to be modified as needed to meet different work requirements.

[0024] 7. Connecting ears are installed on the fastening frame so that the safety protection device can be installed on the fastening frame through the connecting ears, thereby realizing the safety protection device for the construction process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the protective component in use in an embodiment of this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the protective component in an unused state in an embodiment of this utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the fastening frame in an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram showing the positional relationship of parts such as the movable rod and the pin in an embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram showing the positional relationship of the movable rod and connecting belt, etc., in an embodiment of this utility model;

[0030] Figure 6 This is a three-dimensional structural diagram of the first support plate, the second support plate, and the side plate, etc., in an embodiment of this utility model.

[0031] Figure 7 This is a schematic diagram showing the positional relationship of the first support plate, the second support plate, and the side plate in an embodiment of this utility model;

[0032] Figure 8 This is a schematic diagram showing the positional relationship between the base plate and the protective components in an embodiment of this utility model;

[0033] Figure 9 This is a schematic diagram showing the positional relationship between the segments and the connectors in an embodiment of this utility model;

[0034] Figure 10 This is a schematic diagram showing the positional relationship between the rotating frame and the plug in an embodiment of this utility model;

[0035] Figure 11 This is a partial structural diagram of the fastening frame in an embodiment of the present utility model;

[0036] Figure 12 This is a partial structural diagram of the fastening frame in an embodiment of the present utility model;

[0037] Figure 13 This is a partial structural diagram of the fastening frame in an embodiment of this utility model.

[0038] In the attached drawings, the following are the reference numerals: 1. Base plate; 101. First support plate; 102. Second support plate; 103. Side plate; 104. Connecting strap; 105. Mounting port; 2. Fastening frame; 201. Connecting ear; 3. Connecting part; 301. Movable rod; 302. Pin; 303. Reinforcing plate; 4. Protective component; 401. Safety net; 402. Rotating frame; 403. Plug; 404. Segment; 405. Connector; 406. Limiting clip; 5. Steel structure column. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] A steel structure high-altitude operation safety protection device, such as Figures 1-3 As shown, the base plate 1 is parallel to the horizontal plane and is used to provide a support platform for construction personnel. The side of the base plate 1 near the steel structure column 5 is provided with a connecting part 3 for detachable connection with the fastening frame 2 on the steel structure column 5. There are four connecting parts 3, which are symmetrically distributed in pairs on both sides of the steel structure column 5. The edge of the base plate 1 is provided with a protective component 4, which surrounds the steel structure column 5 and the base plate 1. The protective component 4 is used to prevent the workpiece and construction personnel from falling.

[0041] When installing a steel structure and carrying out construction on the steel structure column 5, the construction personnel need to install this device first. Specifically, when installing this device, first assemble the fastening frame 2 and put it on the steel structure column 5. At this time, the fastening frame 2 is not tightened and fixed to the steel structure column 5. The construction personnel install the base plate 1 on the fastening frame 2 on the ground. Then, the fastening frame 2 together with the base plate 1 is moved to the steel structure installation position by a crane. At this position, the construction personnel tighten the fastening frame 2 on the steel structure column 5 to keep the fastening frame 2 fixed. Then, the construction personnel are transported to the base plate 1 by a crane. The construction personnel install the protective component 4 on the edge of the base plate 1.

[0042] In addition to the above installation method, another installation method can be selected. In the same way, the fastening frame 2 is first assembled and put on the steel structure column 5. The fastening frame 2 and the steel structure column 5 are not fixed at first. The base plate 1 is installed on the fastening frame 2 on the ground. Then the protective component 4 is installed on the edge of the base plate 1. Then, the whole structure consisting of the fastening frame 2, the base plate 1 and the protective component 4 is lifted by a crane. The construction workers tighten the fastening frame 2 at the steel structure installation position to fix the whole structure on the steel structure column 5.

[0043] Other installation methods are also available, such as directly tightening the fastening frame 2 onto the steel structure column 5, and then using a crane to install the base plate 1 onto the fastening frame 2. Protective components 4 are then installed along the edges of the base plate 1. The specific installation method can be freely chosen during construction, including but not limited to the methods mentioned above.

[0044] In one embodiment, such as Figures 4-6 As shown, the connecting part 3 includes a movable rod 301, which is hinged to the side of the base plate 1 near the steel structure column 5. The movable rod 301 is provided with spaced limiting holes, which are used to detachably connect to the fastening frame 2 via a pin 302.

[0045] When installing the base plate 1 onto the fastening frame 2, the movable rod 301 on the base plate 1 needs to be rotated first so that the limiting hole of the movable rod 301 is aligned with the connection position of the fastening frame 2. Then, the pin 302 is passed through the limiting hole of the movable rod 301 and the fastening frame 2, so that the movable rod 301 is installed on the fastening frame 2, thereby allowing the base plate 1 to be installed on the fastening frame 2 through the connecting part 3. At this time, the base plate 1 can serve as a support platform to provide a standing position for construction personnel.

[0046] In one embodiment, such as Figure 4 and Figure 5 As shown, it also includes a reinforcing plate 303, which is symmetrically distributed on both sides of the steel structure column 5. The connecting part 3 is used to connect with the fastening frame 2 on both sides in the axial direction of the pin 302. The reinforcing plate 303 is used to connect the connecting parts 3 on the same side of the two fastening frames 2. At the same time, the reinforcing plate 303 can firmly connect the two fastening frames 2 through the pin 302. After the reinforcing plate 303 is installed, its extension direction is parallel to the horizontal plane. Both ends of the reinforcing plate 303 are provided with limiting holes for insertion into the corresponding pin 302.

[0047] Align the limiting holes at both ends of the reinforcing plate 303 with the corresponding pins 302, so that the reinforcing plate 303 is installed between the two pins 302 of different fasteners 2, thereby strengthening the connection strength of the two fasteners 2 on the side through the reinforcing plate 303.

[0048] In one embodiment, such as Figures 5-7 As shown, the base plate 1 includes a first support plate 101, a second support plate 102, and a side plate 103. The first support plate 101 and the second support plate 102 have the same structure and are symmetrically arranged on both sides of the steel structure column 5. The movable rod 301 is hinged to the side of the first support plate 101 and the second support plate 102 near the steel structure column 5. The first support plate 101 and the second support plate 102 are connected by two side plates 103. The side plates 103 are located on both sides of the movable rod 301. The steel structure column 5 is located between the two side plates 103. The first support plate 101 and the second support plate 102 are detachably connected to the side plates 103 by polygonal inserts, so that the first support plate 101 can maintain a fixed posture after being connected to the second support plate 102 through the side plates 103 and the inserts.

[0049] The base plate 1 can be disassembled into a first support plate 101, a second support plate 102, and a side plate 103. This reduces the overall space occupied by the base plate 1 when it is not installed, and allows for disassembly and disassembly during hoisting, reducing the hoisting volume and thus lowering the hoisting difficulty. Specifically, the first support plate 101, the second support plate 102, and the side plate 103 can be hoisted in batches. During the first hoisting, the first support plate 101 is installed on one of the fastening frames 2 via its connecting part 3. During the second hoisting, the second support plate 102 and the side plate 103 are hoisted. The side plate 103 can be pre-installed on the second support plate 102 via a plug rod. After the second support plate 102 is installed on another fastening frame 2 via its connecting part 3, the other end of the side plate 103 is connected to the second support plate 102 via a plug rod, forming a single unit from the first support plate 101, the second support plate 102, and the side plate 103, thus achieving the splicing and installation of the base plate 1.

[0050] In one embodiment, such as Figure 5 and Figure 6 As shown, both the first support plate 101 and the second support plate 102 are provided with connecting straps 104. One end of the connecting strap 104 on the first support plate 101 is connected to the side of the first support plate 101 away from the steel structure column 5. One end of the connecting strap 104 on the second support plate 102 is connected to the side of the second support plate 102 away from the steel structure column 5. The other end of the connecting strap 104 is connected to the end of the adjacent movable rod 301 away from the hinge position of the movable rod 301. The connection point of the movable rod 301, the connecting strap 104 and the first support plate 101 or the second support plate 102 forms a right triangle.

[0051] After the movable rod 301 is installed on the fastening frame 2 via the pin 302, the first support plate 101 and the second support plate 102 form a platform structure to provide support for the construction personnel. In order to improve the support strength of the first support plate 101 and the second support plate 102, a connecting strap 104 is installed so that the connecting strap 104 on the movable rod 301 pulls the first support plate 101 or the second support plate 102, keeping the first support plate 101 and the second support plate 102 horizontal and preventing the first support plate 101 or the second support plate 102 from flipping downwards and causing danger. That is, the connecting strap 104 provides a guarantee for construction safety.

[0052] In one embodiment, such as Figure 8 and Figure 9 As shown, the protective component 4 includes a safety net 401 and spaced mounting rods. The mounting rods are located above the base plate 1 and are positioned at the edge of the base plate 1. The mounting rods surround the steel structure column 5 in the middle. The safety net 401 is installed between adjacent mounting rods. After all the safety nets 401 are installed on the mounting rods, they can surround the steel structure column 5 and the base plate 1.

[0053] When installing the protective component 4, first install the mounting rods at intervals along the edge of the base plate 1, and then install the safety net 401 between adjacent mounting rods. At this time, the safety net 401 surrounds the steel structure column 5 and the base plate 1. The safety net 401 can catch accidentally falling workpieces and construction personnel, providing safety protection during construction.

[0054] In one embodiment, such as Figure 2 , Figure 4 and Figure 10 As shown, a rotating frame 402 is hinged to the bottom of the mounting rod, and a rectangular plug 403 is fixed to the bottom of the rotating frame 402. The edge of the base plate 1 is provided with mounting holes 105 corresponding to the plug 403 at intervals. The mounting holes 105 face upward. The mounting rod is inserted into the corresponding mounting hole 105 through the rotating frame 402 and the plug 403. The safety net 401 is deformable.

[0055] When installing the mounting rod on the base plate 1, align the plug 403 of the rotating bracket 402 on the mounting rod with the plug and insert it into the corresponding mounting port 105. After both the mounting rod and the safety net 401 are installed, the construction personnel can rotate the mounting rod, causing it to rotate around the hinge point of the rotating bracket 402. When the mounting rod rotates to a horizontal position, the safety net 401 unfolds horizontally for fall protection; when the mounting rod rotates to a vertical position, the safety net 401 retracts, reducing the space occupied on the ground after the device is removed. It should be noted that the mounting rod does not only provide protection when rotated to a horizontal position. Even when the mounting rod is not rotated to a horizontal position and is funnel-shaped, it can still effectively prevent personnel and workpieces from falling. Furthermore, the mounting rod can be locked by inserting a rod, bolting, or other existing methods to fix the angle of the mounting rod, preventing it from continuing to rotate around the corresponding rotating bracket 402.

[0056] In one embodiment, such as Figure 9 and Figure 10As shown, the mounting rod includes multiple telescopic sections, each comprising nested segments 404 arranged sequentially. The segment 404 closest to the base plate 1 is hinged to the rotating frame 402. Each segment 404 has spaced-apart connectors 405. All connectors 405 on the same mounting rod are located on the same side of the rod. The connectors 405 are detachably connected to the segments 404. When a connector 405 is installed on a segment 404, it obstructs the extension and retraction of adjacent segments 404. When the connector 405 is removed from the segment 404, the segment 404, no longer obstructed by the connector 405, can retract into the interior of adjacent segments 404. Safety net 401 is connected between the connectors 405 of the rods. The safety net 401 is elastic. When the mounting rod is rotated to its limit position away from the steel structure column 5, the extension direction of the mounting rod is parallel to the horizontal plane. After the mounting rod is in a horizontal state, it can be locked by inserting rods or bolts or other existing methods to restrict its rotation, so that the mounting rod cannot rotate around the corresponding rotating frame 402. This ensures that when the workpiece or construction personnel fall onto the safety net 401, the mounting rod always remains in a horizontal state. A limit card 406 is provided at the end of the segment 404 away from the adjacent base plate 1. The limit card 406 is used to limit the range of movement of the segment 404 in the adjacent segment 404.

[0057] As a multi-section telescopic pole, the mounting rod has sections 404 that can extend and retract, thus changing the overall length of the mounting rod. When the mounting rod is shortened, some of the connectors 405 on the sections 404 need to be removed first; otherwise, these connectors 405 will prevent the sections 404 from retracting into adjacent sections 404. If the length of all mounting rods is shortened, and then the safety net 401 is installed on the connectors 405, the distribution and protection range of the safety net 401 will be smaller due to the reduced number of connectors 405. Similarly, if it is necessary to increase the distribution range of the safety net 401, the sections 404 are stretched out from adjacent sections 404, then more connectors 405 are installed on the sections 404, and finally the safety net 401 is installed on the connectors 405.

[0058] A steel structure high-altitude work device, such as Figure 3 and Figures 11-13 As shown, fastening brackets 2 are symmetrically arranged on both sides of the steel structure column 5. The two fastening brackets 2 clamp the steel structure column 5 in the middle to fix the fastening brackets 2 on the steel structure column 5. The fastening brackets 2 are provided with connecting ears 201 corresponding to the movable rod 301. The connecting ears 201 are spaced apart and their number is the same as the number of upper limit holes of the movable rod 301. Each connecting ear 201 is provided with a plug hole corresponding to the limit hole of the movable rod 301. The pin 302 passes through the plug hole and the limit hole to connect the corresponding connecting ear 201 to the movable rod 301.

[0059] When performing high-altitude work on steel structures, two fastening frames 2 must first be lifted by a crane. Then, the two fastening frames 2 are installed on the steel structure column 5, with the two fastening frames 2 facing each other on both sides of the steel structure column 5, effectively clamping the steel structure column 5 in the middle. When installing the safety protection device for high-altitude work on steel structures, the limiting hole of the movable rod 301 must be aligned with the insertion hole of the corresponding connecting ear 201. Then, the pin 302 is passed through the limiting hole of the movable rod 301 and the insertion hole of the connecting ear 201, connecting the safety protection device to the fastening frame 2. When it is necessary to remove this device from the steel structure column 5, the device is first suspended by a crane to prevent sudden fall. Then, the reinforcing plate 303 is removed, and the clamping between the two fastening frames 2 on the steel structure column 5 is gradually loosened. At this time, the crane gradually lowers the device until it falls to the ground along the steel structure column 5. Alternatively, with the assistance of a crane, the safety protection device can be gradually dismantled first, and then the fastening frame 2 can be removed last. The dismantling methods include, but are not limited to, the methods mentioned above. Construction personnel can adjust the dismantling sequence according to the actual situation.

[0060] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel structure high-altitude operation safety protection device, characterized in that, Includes a base plate (1) for providing a support platform for construction workers. The base plate (1) is provided with a connecting part (3) for detachable connection with the fastening frame (2) on the steel structure column (5). The edge of the base plate (1) is provided with a protective component (4) for preventing workpieces and construction workers from falling. The protective component (4) surrounds the steel structure column (5) and the base plate (1).

2. The steel structure high-altitude operation safety protection device according to claim 1, characterized in that, The connecting part (3) includes a movable rod (301), which is hinged to the side of the base plate (1) near the steel structure column (5). The movable rod (301) is provided with a limiting hole, which is used to detachably connect the movable rod (301) to the fastening frame (2) through a pin (302).

3. The steel structure high-altitude operation safety protection device according to claim 2, characterized in that, It also includes a reinforcing plate (303), the connecting part (3) is disposed on the side of the base plate (1) near the steel structure column (5), the connecting part (3) is used to connect with the two sides of the fastening frame (2), the reinforcing plate (303) is used to connect the connecting parts (3) on the same side of the two fastening frames (2), and both ends of the reinforcing plate (303) are provided with limiting holes for insertion into the corresponding pins (302).

4. A safety protection device for high-altitude operations on steel structures according to claim 2, characterized in that, The base plate (1) includes a first support plate (101), a second support plate (102), and a side plate (103). The first support plate (101) and the second support plate (102) are hinged to the movable rod (301) on the side near the steel structure column (5). The first support plate (101) and the second support plate (102) are connected by the side plate (103). The side plate (103) is located on both sides of the movable rod (301). The first support plate (101) and the second support plate (102) are detachably connected to the side plate (103) by insert rods.

5. A safety protection device for high-altitude operations on steel structures according to claim 4, characterized in that, Both the first support plate (101) and the second support plate (102) are provided with a connecting strip (104). The other end of the connecting strip (104) is connected to the adjacent movable rod (301). The connection point of the movable rod (301), the connecting strip (104), and the first support plate (101) or the second support plate (102) forms a triangle.

6. A safety protection device for high-altitude operations on steel structures according to claim 1, characterized in that, The protective component (4) includes a safety net (401) and spaced mounting rods, the mounting rods being disposed at the edge of the base plate (1), and the safety net (401) being installed between adjacent mounting rods.

7. A safety protection device for high-altitude operations on steel structures according to claim 6, characterized in that, The bottom of the mounting rod is hinged to a rotating frame (402), and a plug (403) is provided on the rotating frame (402). The edge of the base plate (1) is provided with mounting holes (105) corresponding to the plug (403). The mounting rod is inserted into the corresponding mounting hole (105) through the rotating frame (402) and the plug (403). The safety net (401) is deformable.

8. A safety protection device for high-altitude operations on steel structures according to claim 7, characterized in that, The mounting rod includes multiple telescopic rods, each comprising nested segments (404) arranged sequentially. The segment (404) closest to the base plate (1) is hinged to the rotating frame (402). Each segment (404) is provided with spaced connectors (405). The safety net (401) connects the connectors (405) of adjacent telescopic rods. Limiting clips (406) are provided at the ends of the segments (404) away from the adjacent base plate (1). The limiting clips (406) are used to restrict the range of motion of the segments (404) among adjacent segments (404).

9. A safety protection device for high-altitude operations on steel structures according to claim 8, characterized in that, The connector (405) is detachably connected to the segment (404).

10. A steel structure high-altitude work device, characterized in that, The device includes the fastening frame (2) and the steel structure high-altitude operation safety protection device as described in any one of claims 2-9. The fastening frame (2) is symmetrically arranged on both sides of the steel structure column (5). The symmetrically arranged fastening frame (2) clamps the steel structure column (5) in the middle so that the fastening frame (2) is fixed on the steel structure column (5). The fastening frame (2) is provided with a connecting ear (201) corresponding to the movable rod (301). The connecting ear (201) is provided with a socket corresponding to the limiting hole of the movable rod (301). The pin (302) passes through the socket and the limiting hole to connect the corresponding connecting ear (201) to the movable rod (301).

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