Hollow thin-walled pier cantilever anti-falling device

CN224812996UActive Publication Date: 2026-09-29ZHEJIANG ROAD & BRIDGE CONSTR +1
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Patent Information

Application Number
CN202522340113.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-04
Publication Date
2026-09-29
Estimated Expiration
2035-11-04

AI Technical Summary

Technical Problem

施工过程中,墩柱上方经常会产生碎屑、工具或其他杂物,这些物品坠落可能对下方人员、设备造成严重安全隐患

Benefits of technology

本实用新型通过单元模块首尾连接形成环状结构,从而实现对空心薄壁墩的包围,通过增减单元模块的数量以适应不同尺寸和形状的空心薄壁墩的安装,各个单元模块的组合防坠模块组合形成防坠区域,防止上方施工碎屑和杂物对下方的影响,通过自适应贴合防滑模块贴合在空心薄壁墩外壁上,防止装置向下滑动。

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Abstract

The application relates to a hollow thin-wall pier overhanging anti-falling device which comprises height adjusting modules, is connected with each other through rotating adjusting and connecting modules between the adjacent height adjusting modules, and comprises adjusting installation plates, the adjusting installation plates are provided with directional sliding grooves and limiting guide sleeves on one side, and are connected with mounting racks through the directional sliding grooves and the limiting guide sleeves, the mounting racks are provided with directional sliding blocks and limiting guide columns in the directional sliding grooves and the limiting guide sleeves on one side, the limiting guide columns are provided with limiting springs at the end portions, the mounting racks can move along the extension directions of the directional sliding grooves and the limiting guide sleeves, a pair of the height adjusting modules are symmetrically arranged and are provided with abutting rotating cylinders and driving rotating cylinders, the abutting rotating cylinders and the driving rotating cylinders are covered in height adjusting belts, the end portions of the abutting rotating cylinders are rotationally connected with the mounting racks, the end portions of the driving rotating cylinders are rotationally connected with the mounting racks through adjusting driving pieces, and the device further comprises a combined anti-falling module and a self-adapting and adhering anti-skid module. The application enlarges the application range of the device.
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Description

Technical Field

[0001] This application relates to the field of bridge construction safety protection technology, and in particular to a hollow thin-walled pier cantilever anti-falling device. Background Technology

[0002] Hollow thin-walled piers are a common type of pier structure in bridge engineering. During construction, debris, tools, or other contaminants often accumulate above the piers, posing a serious safety hazard to personnel and equipment below if they fall. Current technologies often employ fixed protective netting or temporary fencing for protection, but these devices are often poorly adaptable, unable to accommodate hollow thin-walled piers of varying shapes and sizes, inconvenient to install and adjust, have poor anti-slip properties, and are prone to failure due to uneven pier surfaces or changes in diameter. Therefore, there is an urgent need for a self-adaptive, height-adjustable, and easily installed anti-falling object device. Utility Model Content

[0003] Therefore, it is necessary to provide a hollow thin-walled pier cantilever anti-falling device to overcome the defects mentioned in the background art.

[0004] A hollow thin-walled pier cantilever anti-falling object device includes unit modules. Multiple unit modules are interconnected around the hollow thin-walled pier to form a main device. Each unit module includes... A height adjustment module includes an adjustment mounting plate. One side of the adjustment mounting plate has parallel directional grooves and a limiting guide sleeve, and is connected to a mounting frame via the directional grooves and the limiting guide sleeve. One side of the mounting frame has a directional slider and a limiting guide post that can extend into the directional grooves and the limiting guide sleeve. A limiting spring is installed at the end of the limiting guide post. The mounting frame can move along the extending direction of the directional grooves and the limiting guide sleeve. A pair of adjustment mounting plates are symmetrically arranged. A contact rotating cylinder and a driving rotating cylinder are arranged between the pair of adjustment mounting plates, and the contact rotating cylinder and the driving rotating cylinder are enclosed within a height adjustment band. The end of the contact rotating cylinder is rotatably connected to the mounting frame, and the end of the driving rotating cylinder is rotatably connected to the mounting frame via an adjustment drive component. A rotation adjustment series module is located at the end of the height adjustment module and is used to connect adjacent height adjustment modules; A combined fall arrestor module, located on top of the height adjustment module, is used to prevent items from falling from the top of the pier. The adaptive anti-slip module is located at the bottom of the height adjustment module and is closely attached to the hollow thin-walled pier body to prevent the main device from slipping.

[0005] As a preferred embodiment of the hollow thin-walled pier cantilever anti-falling object device of this utility model, the rotation adjustment series module includes a pair of drive telescopic columns, one end of which is connected to the adjustment mounting plate, and the other end of one drive telescopic column is equipped with a connecting shaft. The connecting shaft is provided with a rotatable series mounting sleeve, and the other end of the other drive telescopic column is provided with a series mounting column. The series mounting sleeve and the series mounting column are matched with each other.

[0006] As a preferred embodiment of the hollow thin-walled pier cantilever anti-falling device of this utility model, the surface of the height adjustment belt is provided with anti-slip rubber strips, which are arranged perpendicular to the length direction of the hollow thin-walled pier.

[0007] As a preferred embodiment of the hollow thin-walled pier cantilever anti-fall device of this utility model, the combined anti-fall module includes an anti-fall mounting plate, which is installed above the height adjustment module. Its bottom is fixed to the adjustment mounting plate through a bent mounting column. A main arc-shaped mesh plate is rotatably connected to one side of the anti-fall mounting plate through an angle adjustment shaft.

[0008] As a preferred embodiment of the hollow thin-walled pier cantilever anti-fall device of this utility model, the combined anti-fall module further includes a combined expansion module. The combined expansion module is installed on one side of the anti-fall mounting plate and includes a combined mounting plate. One side of the combined mounting plate is rotatably connected to a combined arc-shaped mesh plate through an angle adjustment shaft.

[0009] As a preferred embodiment of the hollow thin-walled pier cantilever anti-falling device of this utility model, the adaptive fitting anti-slip module includes a drive shaft, which is fixed between a pair of adjusting mounting plates. A synchronous rotating rod is provided on one side of the drive shaft, and the synchronous rotating rod is rotatably connected to the deformation anti-slip plate through a reset shaft.

[0010] As a preferred embodiment of the hollow thin-walled pier cantilever anti-falling device of this utility model, the deformation anti-slip plate is provided with a compression rubber strip.

[0011] The beneficial effects of this utility model are: This utility model forms a ring structure by connecting unit modules end to end, thereby enclosing the hollow thin-walled pier. The number of unit modules can be increased or decreased to accommodate the installation of hollow thin-walled piers of different sizes and shapes. The combination of various unit modules forms a fall-prevention module to prevent construction debris and other objects from affecting the area below. An adaptive anti-slip module is attached to the outer wall of the hollow thin-walled pier to prevent the device from sliding downwards. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is one of the overall structural schematic diagrams of the anti-falling object device according to an embodiment of this application; Figure 2 This is a second schematic diagram of the overall structure of the anti-falling object device according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a unit module in an embodiment of this application; Figure 4 This is one of the schematic diagrams showing the connection structure between the height adjustment module and the adaptive anti-slip module in an embodiment of this application; Figure 5 This is a second schematic diagram of the connection structure between the height adjustment module and the adaptive bonding anti-slip module in an embodiment of this application; Figure 6 This is the third schematic diagram of the connection structure between the height adjustment module and the adaptive bonding anti-slip module in an embodiment of this application; Figure 7 for Figure 6 Enlarged view of point a in the middle; Figure 8 This is a schematic diagram of the height adjustment module according to an embodiment of this application; Figure 9 This is a schematic diagram of the combined expansion module according to an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Drive telescopic column; 2. Rotating mounting bracket; 3. Connecting shaft; 4. Anti-fall mounting plate; 5. Main arc-shaped mesh plate; 6. Adjusting mounting plate; 7. Deformation anti-slip plate; 8. Drive shaft; 9. Synchronous rotating rod; 10. Bending mounting column; 11. Height adjustment belt; 12. Series mounting column; 13. Series mounting sleeve; 14. Angle adjusting shaft; 15. Connecting stud; 16. Connecting nut; 17. Supporting drum; 18. Drive drum; 19. Mounting bracket; 20. Extruded rubber strip; 21. Series mounting hole; 22. Adjusting drive component; 23. Combined mounting column; 24. Combined mounting hole; 25. Anti-slip rubber strip; 26. Reset shaft; 27. Oriented slide groove; 28. Limiting guide sleeve; 29. ​​Oriented slider; 30. Limiting guide column; 31. Limiting spring; 32. Combined mounting plate; 33. Combined arc-shaped mesh plate. Detailed Implementation

[0014] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0015] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] According to one aspect of this application, embodiments of this application provide a hollow thin-walled pier cantilever anti-falling object device, please refer to the following: Figures 1 to 9 The device includes unit modules, with multiple unit modules interconnected around a hollow thin-walled pier to form the main body. Each unit module includes a height adjustment module, a rotation adjustment series module, and an adaptive anti-slip module. The height adjustment module includes an adjustment mounting plate 6. One side of the adjustment mounting plate 6 is provided with parallel directional grooves 27 and limiting guide sleeves 28, and it is connected to a mounting frame 19 via the directional grooves 27 and limiting guide sleeves 28. One side of the mounting frame 19 is provided with a directional slider 29 that can extend into the directional grooves 27 and limiting guide sleeves 28, and a limiting guide post 30. A limiting spring 31 is installed at the end of the limiting guide post 30. The mounting frame 19 can move along the directional grooves 27 and limiting guide sleeves 28. The extension direction of the sleeve 28 moves, and a pair of adjusting mounting plates 6 are symmetrically arranged. A contact rotating cylinder 17 and a driving rotating cylinder 18 are arranged between the pair of adjusting mounting plates 6. The contact rotating cylinder 17 and the driving rotating cylinder 18 are covered within the height adjusting belt 11. The end of the contact rotating cylinder 17 is rotatably connected to the mounting frame 19. The end of the driving rotating cylinder 18 is rotatably connected to the mounting frame 19 through the adjusting driving component 22. The rotating adjustment series module is set at the end of the height adjusting module to connect adjacent height adjusting modules. The combined anti-fall module is set at the top of the height adjusting module to prevent items from falling from the top of the pier. The self-adaptive anti-slip module is set at the bottom of the height adjusting module and is arranged close to the hollow thin-walled pier body to prevent the main device from slipping.

[0021] In this embodiment, the device includes unit modules. Multiple unit modules are interconnected around the hollow thin-walled pier to form the main device. Each unit module includes a height adjustment module, a rotation adjustment series module, a rotation adjustment series module, and an adaptive anti-slip module. Multiple rotation assembly modules are connected end-to-end through the rotation adjustment series module to form a ring structure, thereby surrounding the hollow thin-walled pier to accommodate the installation of hollow thin-walled piers of different sizes and shapes. The combination of the anti-fall modules of each unit module forms an anti-fall zone to prevent construction debris and debris from affecting the area below. The adaptive anti-slip module adheres to the outer wall of the hollow thin-walled pier to prevent the device from sliding downwards. During the lifting and lowering adjustment process, the adaptive anti-slip module always adheres to the hollow thin-walled pier. If sliding occurs, it provides friction along the outer wall of the hollow thin-walled pier to limit the sliding of the device and ensure the stability and safety of the equipment in lifting and lowering and in a static anti-falling state.

[0022] In one embodiment, the rotation adjustment series module includes a pair of drive telescopic columns 1. The drive telescopic columns 1 are disposed at one end of the adjustment mounting plate 6 and fixedly connected to the adjustment mounting plate 6. The other end of one drive telescopic column 1 is mounted with a connecting shaft 3 via a rotating mounting bracket 2. The connecting shaft 3 is provided with a rotatable series mounting sleeve 13, which is provided with a through hole. The other end of the other drive telescopic column 1 is provided with a series mounting column 12. The series mounting column 12 is provided with a series mounting hole 21 at the position corresponding to the through hole. During series installation, the series mounting holes 21 and the through holes on the series mounting column 12 and the series mounting sleeve 13 are aligned and connected and fixed with connecting studs 15 and connecting nuts 16. By combining the series mounting column 12 and the series mounting sleeve 13, the adjacent adjustable assembly mechanisms are connected in series. That is, the series mounting column 12 is inserted into the series mounting sleeve 13, so that the series mounting holes 21 on the series mounting column 12 and the series mounting sleeve 13 are aligned. At this time, the connecting studs 15 and the connecting nuts 16 are tightened and fixed. By adjusting the length of the drive telescopic column 1, it can adapt to the installation of hollow thin-walled piers of different sizes and shapes, and ensure that the height adjustment module can fit against the outer wall of the hollow thin-walled pier.

[0023] In one embodiment, the height adjustment module includes two symmetrically arranged adjustment mounting plates 6, and two sets of U-shaped mounting brackets 19 facing each other between the two adjustment mounting plates 6. A retaining rotating cylinder 17 is symmetrically arranged on the side of the two sets of U-shaped mounting brackets 19 facing the hollow thin-walled pier, and a driving rotating cylinder 18 is symmetrically arranged on the side of the two sets of U-shaped mounting brackets 19 away from the hollow thin-walled pier. Both ends of the retaining rotating cylinder 17 are rotatably mounted on the U-shaped mounting brackets 19. Adjustment driving components 22 are coaxially arranged at both ends of the driving rotating cylinder 18. The adjustment driving components 22 are fixed to the U-shaped mounting brackets 19. Rotation of the adjustment driving components 22 drives the driving rotating cylinder 18 to rotate, thus driving... Height adjustment belts 11 are provided on the outer sides of the rotating drum 18 and the supporting rotating drum 17. Anti-slip grooves are provided on the outer sides of both the driving rotating drum 18 and the supporting rotating drum 17 in coordination with the height adjustment belts 11. A limit guide post 30 is horizontally provided on the side of the U-shaped mounting bracket 19 facing the nearest adjusting mounting plate 6. A limit guide sleeve 28 is provided on the adjusting mounting plate 6 in coordination with the limit guide post 30. Limit springs 31 are symmetrically provided at both ends of the limit guide post 30 in coordination with the limit guide sleeve 28. Orientation sliders 29 are symmetrically provided on the U-shaped mounting brackets 19 on both sides of the limit guide post 30. Orientation grooves 27 are provided on both the adjusting mounting plate 6 in coordination with the orientation sliders 29. By adjusting the extension and retraction of the drive telescopic column 1, the limiting spring 31 at one end of the limiting guide column 30 is compressed and deformed. The reaction force is transmitted to the height adjustment belt 11 through the limiting guide column 30, the U-shaped mounting frame 19 and the supporting rotating drum 17 on it. The height adjustment belt 11 provides friction in the supporting state to prevent the device from sliding downward. At the same time, it ensures that the device can move stably on the hollow thin-walled pier when the drive rotating drum 18 is working. While the limiting guide column 30 and the limiting guide sleeve 28 guide the displacement, the directional slider 29 and the directional slide groove 27 cooperate to ensure the stability of the displacement direction of the U-shaped mounting frame 19 and ensure that the force on the height adjustment belt 11 is uniform.

[0024] In one embodiment, a plurality of anti-slip rubber strips 25 are uniformly arranged on the outer side of the height adjustment belt 11, parallel to the drive drum 18 and the support drum 17. The anti-slip rubber strips 25 are arranged perpendicular to the length direction of the hollow thin-walled block to increase the friction between the height adjustment belt 11 and the hollow thin-walled block.

[0025] In one embodiment, the combined fall arrest module includes a fall arrest mounting plate 4, which is installed above the height adjustment module. The two bottom sides of the fall arrest mounting plate 4 are fixed to the adjustment mounting plate 6 by bending mounting columns 10. The side of the fall arrest mounting plate 4 away from the hollow thin-walled pier is rotatably connected to the main arc surface mesh plate 5 by an angle adjustment shaft 14. The angle adjustment shaft 14 adjusts the rotation of the main arc surface mesh plate 5 to adjust its protection angle and can fix the main arc surface mesh plate 5 to a certain angle.

[0026] In one embodiment, the combined fall protection module further includes a combined expansion module, which is installed on the side of the combined fall protection module to fill the gap between combined fall protection modules in adjacent unit modules. The combined expansion module includes a combined mounting plate 32, one side of which is rotatably connected to a combined arc-shaped mesh plate 33 via an angle adjustment shaft 14. The angle adjustment shaft 14 adjusts the rotation of the combined arc-shaped mesh plate 33 to adjust its protection angle and can fix the combined arc-shaped mesh plate 33 to a certain angle. Combined mounting posts 23 and combined mounting brackets are respectively provided at both ends of the combined mounting plate 32. The end of the anti-fall mounting plate 4 is also provided with a combination mounting hole 24. The combination mounting column 23 and the combination mounting hole 24 can be connected to each other to expand the anti-fall range. In use, according to the specific size and shape of the hollow thin-walled pier, a certain number of combination expansion modules are selected. Through the cooperation of the combination mounting column 23 and the combination mounting hole 24, the combination mounting plate 32 and the anti-fall mounting plate 4 are installed together. At this time, the angle adjustment shaft 14 is adjusted synchronously to rotate and unfold the main arc surface mesh plate 5 and the combination arc surface mesh plate 33, thereby increasing the anti-fall blocking range and effectively improving the safety below the device.

[0027] In one embodiment, the adaptive anti-slip module includes a drive shaft 8, which is fixed between a pair of adjustment mounting plates 6 and away from the hollow thin-walled pier. A plurality of synchronous rotating rods 9 are evenly spaced on the drive shaft 8. One end of each synchronous rotating rod 9 is fixedly connected to the drive shaft 8, and the other end is rotatably connected to a reset shaft 26. A deformable anti-slip plate 7 is fixedly connected to the reset shaft 26. The deformable anti-slip plate 7 is an arc-shaped plate with its inner side facing the hollow thin-walled pier. After the devices are installed in series, the height is adjusted as needed using a height adjustment module. Each time the height adjustment is completed, the drive shaft 8 drives the synchronous rotating rods 9 to rotate, causing the deformable anti-slip plate 7 to contact the hollow thin-walled pier, preventing the device from falling or being damaged due to force imbalance. If the fit of the height adjustment band 11 decreases due to unevenness on the surface of the hollow thin-walled pier during height adjustment, the reset shaft 26 ensures that the deformable anti-slip plate 7 remains in contact with the outer wall of the hollow thin-walled pier.

[0028] In one embodiment, the deformation anti-slip plate 7 is provided with a squeezed rubber strip 20 at the connection end with the hollow thin-walled block, which further enhances the friction between the plate and the hollow thin-walled block, providing double anti-slip protection for the device.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A hollow thin-walled pier cantilever anti-falling object device, comprising unit modules, wherein multiple unit modules are interconnected around the hollow thin-walled pier to form a main device, characterized in that: The unit module includes A height adjustment module includes an adjustment mounting plate. One side of the adjustment mounting plate has parallel directional grooves and a limiting guide sleeve, and is connected to a mounting frame via the directional grooves and the limiting guide sleeve. One side of the mounting frame has a directional slider and a limiting guide post that can extend into the directional grooves and the limiting guide sleeve. A limiting spring is installed at the end of the limiting guide post. The mounting frame can move along the extending direction of the directional grooves and the limiting guide sleeve. A pair of adjustment mounting plates are symmetrically arranged. A contact rotating cylinder and a driving rotating cylinder are arranged between the pair of adjustment mounting plates, and the contact rotating cylinder and the driving rotating cylinder are enclosed within a height adjustment band. The end of the contact rotating cylinder is rotatably connected to the mounting frame, and the end of the driving rotating cylinder is rotatably connected to the mounting frame via an adjustment drive component. A rotation adjustment series module is located at the end of the height adjustment module and is used to connect adjacent height adjustment modules; A combined fall arrestor module, located on top of the height adjustment module, is used to prevent items from falling from the top of the pier. The adaptive anti-slip module is located at the bottom of the height adjustment module and is closely attached to the hollow thin-walled pier body to prevent the main device from slipping.

2. The hollow thin-walled pier cantilever anti-falling object device according to claim 1, characterized in that, The rotation adjustment series module includes a pair of drive telescopic columns. One end of the drive telescopic column is connected to the adjustment mounting plate. The other end of one drive telescopic column is equipped with a connecting shaft. The connecting shaft is provided with a rotatable series mounting sleeve. The other end of the other drive telescopic column is provided with a series mounting column. The series mounting sleeve and the series mounting column are matched with each other.

3. The hollow thin-walled pier cantilever anti-falling object device according to claim 1, characterized in that, The surface of the height adjustment belt is provided with anti-slip rubber strips, which are arranged perpendicular to the length direction of the hollow thin-walled pier.

4. The hollow thin-walled pier cantilever anti-falling object device according to claim 1, characterized in that, The combined fall protection module includes a fall protection mounting plate, which is installed above the height adjustment module. Its bottom is fixed to the adjustment mounting plate through a bent mounting column. A main arc-shaped mesh plate is rotatably connected to one side of the fall protection mounting plate through an angle adjustment shaft.

5. The hollow thin-walled pier cantilever anti-falling object device according to claim 4, characterized in that, The combined fall arrest module also includes a combined expansion module, which is installed on one side of the fall arrest mounting plate. The combined expansion module includes a combined mounting plate, and one side of the combined mounting plate is rotatably connected to a combined arc-shaped mesh plate via an angle adjustment shaft.

6. The hollow thin-walled pier cantilever anti-falling object device according to claim 1, characterized in that, The adaptive anti-slip module includes a drive shaft, which is fixed between a pair of adjustment mounting plates. A synchronous rotation rod is provided on one side of the drive shaft, and the synchronous rotation rod is rotatably connected to the deformation anti-slip plate through a reset shaft.

7. The hollow thin-walled pier cantilever anti-falling object device according to claim 6, characterized in that, The deformation anti-slip plate is equipped with a compression rubber strip.