Quick-fit platform guard

Abstract

The utility model discloses a quick -wearing formula platform protection device belongs to protection device technical field, and this quick -wearing formula platform protection device includes two support panel, support foot, clamping assembly and gyro wheel, wherein, one support panel can be set up on the other support panel foldably, support foot can be detachably set up at the lower extreme of support panel, clamping assembly sets up at the bottom of support foot, and clamping assembly is configured to lock support foot to guardrail, gyro wheel sets up at the bottom of support foot, and gyro wheel is configured to make support foot move along the extension direction of guardrail. The utility model discloses the technical scheme of realization of the miniaturization and light weight of protection device, makes its convenient transportation and has excellent passability to narrow operation entry, can make single person complete carrying and installation simultaneously, and then effectively solved the problem of traditional rigid protection cage heavy and difficult to install and move, improved construction efficiency and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of protective device technology, and in particular to a quick-installation platform protective device. Background Technology

[0002] Suspended platforms are widely used lifting equipment in fields such as construction, exterior wall construction, and high-altitude equipment maintenance. To ensure the safety of workers and prevent them from falling from the platform, safety protection devices are usually installed on the outside of the platform.

[0003] Currently, the most common protective device is the rigid safety cage. Rigid safety cages require on-site assembly at the suspended platform installation site, a cumbersome process requiring at least two people and taking a considerable amount of time. Because of their integral rigid frame structure, rigid safety cages are bulky and heavy, making them extremely inconvenient to pass through narrow passages or enter specific work spaces. Therefore, when the suspended platform is in a high-altitude working state, if the working position of the safety cage needs to be adjusted, the entire suspended platform must be lowered to the ground, disassembled, moved to the new position, and then reassembled. This assembly process not only significantly reduces work efficiency but also seriously affects the continuity of high-altitude construction. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a quick-assembly platform protection device that enables rapid assembly, disassembly, and transportation, overcoming the cumbersome assembly of traditional rigid protective cages in high-altitude operations, thereby improving overall construction efficiency.

[0005] According to an embodiment of the present utility model, a quick-install platform protection device includes: two support panels, one of which is foldably mounted on the other support panel; a leg detachably mounted on the lower end of the support panel; a clamping assembly mounted on the bottom of the leg, configured to lock the leg to the guardrail; and a roller mounted on the bottom of the leg, configured to move the leg along the extension direction of the guardrail.

[0006] It has at least the following beneficial effects: The support panels constitute the main structure, and the two support panels are rotatably connected by hinges or other means, allowing one panel to fold over the other. This gives the two support panels two states: a folded transport state and an unfolded working state, effectively reducing the volume during storage and transportation and facilitating passage through narrow work aisles. The legs, as a supporting structure, are detachably connected to the lower end of the support panels. Clamping components are fixedly installed at the bottom of the legs, securely locking them to the guardrail of the suspended platform. Rollers are located at the bottom of the legs, allowing operators to easily move the entire protective device horizontally along the extension direction of the guardrail. In use, the two support panels are unfolded from the folded state to the working state and fixed. Then, the legs are installed at the bottom of the support panels, followed by initial fixing of the legs to the guardrail using the clamping components. Finally, the rollers are used to push the legs to the predetermined working position, and the clamping components are locked. The technical solution of this utility model realizes the miniaturization and lightweighting of the protective device, making it convenient to transport and providing excellent passage through narrow work entrances. At the same time, it can be carried and installed by a single person, thus effectively solving the problems of traditional rigid protective cages being bulky and difficult to install and move, and improving construction efficiency and operational safety.

[0007] According to some embodiments of the present invention, the support panel includes a frame and a protective net, the protective net being fixedly laid on the frame and configured to provide cushioning for falling objects.

[0008] According to some embodiments of this utility model, the protective net is a stainless steel woven mesh.

[0009] According to some embodiments of the present invention, the clamping assembly includes a first locking bolt and a pair of oppositely arranged clamping arms. The clamping arms extend in the vertical direction and are fixedly disposed at the bottom of the support leg. A limiting groove for accommodating the guardrail is formed between the two clamping arms. Both clamping arms are provided with a first locking hole. The two first locking holes are coaxially aligned. The first locking bolt passes through at least one of the first locking holes to fix the guardrail in the limiting groove.

[0010] According to some embodiments of the present invention, the roller is mounted between two clamping arms via a support shaft, and the axial direction of the support shaft is parallel to the axial direction of the first locking hole.

[0011] According to some embodiments of the present invention, the bottom of the support panel extends downward with a mounting protrusion, and the upper end of the support leg is provided with a mounting groove adapted to the mounting protrusion, and the mounting protrusion can be detachably embedded in the mounting groove.

[0012] According to some embodiments of this utility model, a second locking hole is provided on the mounting protrusion, and a third locking hole is provided on the side wall of the mounting groove. The second locking hole and the third locking hole are coaxially aligned, and a second locking bolt is inserted into the second locking hole and the third locking hole.

[0013] According to some embodiments of the present invention, a locking component is also included, which is disposed between the two support panels and configured to lock the two support panels to prevent the two support panels from rotating relative to each other.

[0014] According to some embodiments of the present invention, both frames are provided with connecting brackets, the two connecting brackets are connected by a hinge shaft, and the locking component includes a third locking bolt and a fourth locking hole provided on the connecting bracket. The fourth locking holes of the two connecting brackets are coaxially aligned, and the third locking bolt is configured to pass through the two aligned fourth locking holes simultaneously to prevent the two connecting brackets from rotating relative to each other.

[0015] According to some embodiments of this utility model, reinforcing bushings are embedded in the first locking hole, the second locking hole, the third locking hole and the fourth locking hole.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the quick-installation platform protection device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the central support panel; Figure 3 for Figure 1 Schematic diagram of the middle support leg; Figure 4 for Figure 3 Schematic diagram of the structure at point A; Figure 5 for Figure 2 A schematic diagram of the structure at point B.

[0018] Icon labels: Support panel 1, frame 11, connecting bracket 111, protective net 12, mounting protrusion 13, second locking hole 131; Support leg 2, mounting groove 21, third locking hole 211; Clamping assembly 3, clamping arm 31, first locking hole 311; Roller 4; Locking component 5, fourth locking hole 51. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 5 This utility model discloses a quick-installation platform protection device, including two support panels 1, legs 2, clamping components 3, and rollers 4. One support panel 1 is foldable and mounted on the other support panel 1; the legs 2 are detachably mounted on the lower end of the support panel 1; the clamping components 3 are mounted on the bottom of the legs 2 and are configured to lock the legs 2 to the guardrail; the rollers 4 are mounted on the bottom of the legs 2 and are configured to move the legs 2 along the extension direction of the guardrail.

[0023] This utility model relates to a quick-installation platform protection device, which is mainly used for the safety protection of suspended platforms for high-altitude operations. The suspended platform is usually equipped with a guardrail that extends in the vertical direction. The guardrail can be a panel structure or a railing structure.

[0024] like Figure 1As shown, this quick-installation platform safety device mainly includes two support panels 1, legs 2, clamping components 3, and rollers 4. The support panels 1 form the main structure, and the two support panels 1 are rotatably connected via hinges or other means, allowing one panel to fold over the other. This gives the two support panels 1 two states: a folded transport state and an unfolded working state, effectively reducing their volume during storage and transportation and facilitating passage through narrow work areas. The legs 2 are detachably connected to the lower end of the support panels 1 as a support structure. The clamping components 3 are fixedly installed at the bottom of the legs 2, securing them firmly to the guardrail of the suspended platform. The rollers 4 are located at the bottom of the legs 2, allowing the operator to easily move the entire safety device horizontally along the extension direction of the guardrail. In use, the two support panels 1 are unfolded from the folded state to the working state and fixed. Then, the legs 2 are installed at the bottom of the support panels 1. Next, the legs 2 are initially fixed to the guardrail using the clamping components 3. Finally, the rollers 4 are used to push the device to the predetermined working position, and then the clamping components 3 are locked. The technical solution of this utility model realizes the miniaturization and lightweighting of the protective device, making it convenient to transport and providing excellent passage through narrow work entrances. At the same time, it can be carried and installed by a single person, thus effectively solving the problems of traditional rigid protective cages being bulky and difficult to install and move, and improving construction efficiency and operational safety.

[0025] In some specific embodiments of this utility model, the support panel 1 includes a frame 11 and a protective net 12. The protective net 12 is fixedly laid on the frame 11 and is configured to provide cushioning for falling objects.

[0026] like Figure 2 As shown, the frame 11 has a closed rectangular structure, enclosing a complete installation area. The protective net 12 is laid within this installation area by fixing it at the edges, forming the main load-bearing and buffering interface of the device. When tools, parts, or other items accidentally fall, the protective net 12 utilizes its material properties and tension structure to generate elastic deformation, forming an effective buffering effect. It should be noted that under impact load, the protective net 12 will generate a moderate elastic indentation. On the one hand, it can absorb the kinetic energy of the falling object, reducing its impact force on the device and maximizing the integrity of the falling object; on the other hand, this flexible buffering mechanism can effectively prevent the object from rebounding or breaking, thereby reducing the safety threat to operators and workers below caused by secondary falls or flying debris, achieving multi-layered fall protection.

[0027] In some specific embodiments of this utility model, the protective net 12 is a stainless steel woven mesh, which ensures safety protection while also considering the service life and adaptability of the device under various working conditions. Specifically, the protective net 12 is preferably made of austenitic 304 stainless steel wire through a mechanical weaving process. This material has excellent corrosion resistance and rust prevention capabilities in outdoor or industrial environments, ensuring the device meets the durability requirements for long-term use. In terms of mechanical properties, the stainless steel woven mesh, after being tensioned and fixed, forms a flexible protective interface with moderate elasticity. This flexible structural characteristic allows it to effectively absorb and disperse energy through elastic deformation when subjected to impact, thus alleviating the load on the overall structure from the instantaneous impact force and providing effective cushioning protection for falling objects.

[0028] Of course, the technical solution of this utility model is not limited to the above-mentioned implementation of the combination of frame 11 and protective net 12. In another embodiment of this utility model, the support panel 1 can adopt a complete rigid plate structure. The plate is made of metal sheet, engineering plastic or composite material. Its overall structure forms a continuous protective plane to directly receive falling objects and provide rigid protection. Compared with the mesh structure, this complete plate structure has higher integrity and sealing performance, and can effectively block debris from flying in specific working environments.

[0029] In some specific embodiments of this utility model, the clamping assembly 3 includes a first locking bolt and a pair of clamping arms 31 arranged opposite to each other. The clamping arms 31 extend in the vertical direction and are fixedly disposed at the bottom of the support leg 2. A limiting groove for accommodating the guardrail is formed between the two clamping arms 31. Both clamping arms 31 are provided with a first locking hole 311. The two first locking holes 311 are coaxially aligned. The first locking bolt passes through at least one of the first locking holes 311 to fix the guardrail in the limiting groove.

[0030] like Figure 3 and Figure 4 As shown, a clamping arm 31 extends in the same direction from the lower end of the support leg 2. Another clamping arm 31, parallel to the support leg 2, is positioned at a corresponding position. The two clamping arms 31 are arranged vertically, forming a U-shaped limiting groove with the opening facing downwards. The width of this limiting groove is compatible with the thickness of common suspended platform railings, allowing it to be stably inserted into the railing. A pair of coaxially corresponding first locking holes 311 are formed at the relative positions of the two clamping arms 31. The two first locking holes 311 extend horizontally in the front-back direction, forming a locking channel that allows the first locking bolt to pass through completely.

[0031] In practical applications, this clamping assembly 3 achieves broad adaptability to different types of guardrails, enabling the protective device to achieve the same reliable fixing effect under various actual working conditions. Specifically, for perforated guardrails, during installation, the two clamping arms 31 are placed on both sides of the guardrail, allowing the guardrail to be embedded in the U-shaped limiting groove. At this time, the first locking bolt can completely penetrate the first locking hole 311 on both clamping arms 31. Tightening the nut will reduce the gap between the two clamping arms 31, firmly gripping the guardrail from both sides to achieve a secure fixation. For solid panel guardrails, during installation, the two clamping arms 31 are placed on both sides of the guardrail panel. At this time, the first locking bolt only needs to pass through the first locking hole 311 of the clamping arm 31 on the side closer to the operator, so that the end of its screw directly abuts against the side surface of the panel guardrail. After continuously tightening the bolt, the pushing force of the bolt and the reaction force of the outer clamping arm 31 form a strong unidirectional clamping force, which can stably fix the support leg 2 to the panel guardrail.

[0032] In some specific embodiments of this utility model, the roller 4 is mounted between two clamping arms 31 via a support shaft, and the axial direction of the support shaft is parallel to the axial direction of the first locking hole 311.

[0033] like Figure 4 As shown, a support shaft is horizontally mounted between two clamping arms 31 along the front-to-back direction. Rollers 4 are mounted on the support shaft via bearings and can rotate freely around it. Rollers 4 are located at the bottom of a U-shaped limiting groove, so when the clamping arms 31 straddle the top of the guardrail, the outer edge of the rollers 4 makes contact with the upper surface of the guardrail. When the clamping arms 31 are not locked, the weight of the entire device is transmitted to the rollers 4 via the support shaft, and then the rollers 4 bear the weight of the upper surface of the guardrail. At this time, the operator only needs to apply a small horizontal pushing force to make the rollers 4 roll along the guardrail, thereby driving the entire protective device to move smoothly along the extension direction of the guardrail, achieving rapid and flexible adjustment of the high-altitude work position. Therefore, the technical solution of this utility model cleverly integrates clamping and moving functions into the same set of components, ensuring locking reliability while improving the ease of use and work efficiency of the device.

[0034] In some specific embodiments of this utility model, the bottom of the support panel 1 extends downward with a mounting protrusion 13, and the upper end of the support leg 2 is provided with a mounting groove 21 that is adapted to the mounting protrusion 13. The mounting protrusion 13 can be detachably embedded in the mounting groove 21.

[0035] In some specific embodiments of this utility model, a second locking hole 131 is provided on the mounting protrusion 13, and a third locking hole 211 is provided on the side wall of the mounting groove 21. The second locking hole 131 and the third locking hole 211 are coaxially aligned, and a second locking bolt is inserted into the second locking hole 131 and the third locking hole 211.

[0036] like Figure 2As shown, to facilitate quick assembly and disassembly between the support panel 1 and the support leg 2, the bottom of the support panel 1 extends downward to form a mounting protrusion 13. Correspondingly, a mounting groove 21 with a shape and size that matches the mounting protrusion 13 is provided at the upper end of the support leg 2. During installation, the mounting protrusion 13 is inserted into the mounting groove 21 from top to bottom, thus achieving initial positioning and load-bearing of the support panel 1. In this specific embodiment, to ensure the stability of the connection, a second locking hole 131 is provided on the mounting protrusion 13, and a third locking hole 211 is provided on the corresponding side wall of the mounting groove 21. When the mounting protrusion 13 is fully inserted into the mounting groove 21, the second locking hole 131 and the third locking hole 211 automatically align coaxially to form a complete locking channel. At this time, the second locking bolt is passed through the locking channel and tightened, thus forming a reliable rigid connection between the support panel 1 and the support leg 2.

[0037] To achieve quick assembly and disassembly between the support panel 1 and the support leg 2, in addition to the aforementioned plug-in locking method, those skilled in the art can also employ various connection structures. For example, a quick-release pin structure can be used to achieve tool-free assembly and disassembly, a snap-lock mechanism can be used to complete a one-click connection, and a rotary lock mechanism can be used to achieve mechanical self-locking. Any technical solution based on the core concept of this utility model that uses a mechanical structure capable of quick separation and locking to achieve a reliable connection between the panel and the support leg 2 falls within the protection scope of this utility model.

[0038] In some specific embodiments of this utility model, a locking component 5 is also included. The locking component 5 is disposed between the two support panels 1 and is configured to lock the two support panels 1 to prevent relative rotation between them. It should be further noted that, in the unfolded state, the support panels 1 rely solely on the connecting member between the two support panels 1 to maintain their shape, which poses a certain risk to their structural stability. Specifically, under external force, the support panels 1 are prone to accidental folding, causing the protective function to fail instantly, thus making it difficult to form a stable support platform.

[0039] In some specific embodiments of this utility model, both frames 11 are provided with connecting brackets 111, and the two connecting brackets 111 are connected by a hinge shaft. The locking component 5 includes a third locking bolt and a fourth locking hole 51 provided on the connecting bracket 111. The fourth locking holes 51 of the two connecting brackets 111 are coaxially aligned. The third locking bolt is configured to pass through the two aligned fourth locking holes 51 at the same time to prevent the two connecting brackets 111 from rotating relative to each other.

[0040] like Figure 2 and Figure 5As shown, connecting brackets 111 are respectively provided on adjacent sides of the frame 11 of the two support panels 1. The pair of connecting brackets 111 are rotatably connected by a hinge shaft, thereby providing pivotal support for the folding movement of the support panels 1. To achieve rigid locking after unfolding, a fourth locking hole 51 extending in the front-rear direction is provided on each connecting bracket 111. When the two support panels 1 are fully unfolded to the working state, the two connecting brackets 111 are in contact with each other, and the fourth locking holes 51 on them automatically maintain a coaxial alignment. At this time, the third locking bolt is passed through the pair of aligned locking holes and the nut is tightened, thus forming a firm mechanical connection between the two connecting brackets 111 and restricting the relative rotation of the connecting brackets 111 around the hinge shaft.

[0041] Of course, mating pin holes can also be provided on the connecting bracket 111 to achieve quick locking by inserting quick-release pins, or a spring-loaded buckle structure can be used to automatically engage when the support panel 1 is unfolded to a predetermined position. Any mechanical locking scheme that can prevent the two connecting brackets 111 from rotating relative to each other is within the protection scope of this utility model.

[0042] In some specific embodiments of this utility model, reinforcing bushings are embedded in the first locking hole 311, the second locking hole 131, the third locking hole 211 and the fourth locking hole 51.

[0043] Reference Figures 1 to 5 The structure shown below will be further explained in detail regarding this quick-installation platform protection device.

[0044] This quick-install platform safety device is suitable for the safety protection of suspended platforms used in high-altitude operations. Its main structure includes two rectangular support panels 1, four support legs 2, four clamping components 3, and four rollers 4. The support panels 1 adopt a rectangular frame structure 11, with a stainless steel woven mesh fixedly laid inside as the main protective surface. The two support panels 1 are rotatably connected to the hinge shaft through the connecting brackets 111 on their sides, allowing one support panel 1 to be folded relative to the other support panel 1. The connecting brackets 111 have four fourth locking holes 51 extending in the front-to-back direction and evenly distributed in the left-to-right direction. When the two support panels 1 are fully unfolded, the two connecting brackets 111 on both sides fit together, and the fourth locking holes 51 on them automatically align coaxially. The support panel 1 has a mounting protrusion 13 extending downwards from its bottom, and the upper end of the support leg 2 has a matching mounting groove 21. During assembly, the mounting protrusion 13 is inserted into the mounting groove 21. When the second locking hole 131 on the mounting protrusion 13 is aligned with the third locking hole 211 on the side wall of the mounting groove 21, the second locking bolt is inserted and locked, thus completing the stable connection between the support leg 2 and the support panel 1. Each support leg 2 has two clamping arms 31 extending vertically at its bottom, forming a U-shaped limiting groove with a width adapted to the thickness of common suspended basket railings. The roller 4 is mounted between the two clamping arms 31 via a support shaft and is located at the bottom of the U-shaped limiting groove. The two clamping arms 31 have coaxially aligned first locking holes 311. By passing the first locking bolt through the hole and applying force, the support leg 2 can be firmly locked to the suspended basket railing.

[0045] Operating Procedure: First, unfold the two support panels 1 to a horizontal working position, and use the third locking bolt to pass through the aligned fourth locking hole 51 to rigidly lock them. Next, insert the four mounting protrusions 13 at the bottom of the support panel 1 into the mounting slots 21 of the four legs 2 respectively, and tighten them with the second locking bolt to complete the assembly of the main structure. Then, insert the assembled support panel 1 and legs 2 into the guardrail of the suspended platform through the limiting slot, and use the rollers 4 to easily push them to the preset working position. Finally, use the first locking bolt to lock the clamping arm 31 at each leg 2, and the entire protective device can be reliably fixed to the guardrail for safe use.

[0046] 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.

[0047] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A quick-installation platform protection device, characterized in that, Applied to suspended platforms, which are equipped with guardrails around their perimeter, including: Two support panels (1), one of which is foldably mounted on the other support panel (1); The support leg (2) is detachably mounted at the lower end of the support panel (1); A clamping assembly (3) is disposed at the bottom of the foot (2), the clamping assembly (3) being configured to lock the foot (2) to the guardrail; A roller (4) is provided at the bottom of the foot (2), and the roller (4) is configured to move the foot (2) along the extension direction of the guardrail.

2. The quick-installation platform protection device according to claim 1, characterized in that, The support panel (1) includes a frame (11) and a protective net (12), the protective net (12) being fixedly laid on the frame (11) and configured to provide cushioning for falling objects.

3. The quick-installation platform protection device according to claim 2, characterized in that, The protective net (12) is a stainless steel woven mesh.

4. The quick-installation platform protection device according to claim 2, characterized in that, The clamping assembly (3) includes a first locking bolt and a pair of clamping arms (31) arranged opposite to each other. The clamping arms (31) extend in the vertical direction and are fixedly disposed at the bottom of the support leg (2). A limiting groove for accommodating the guardrail is formed between the two clamping arms (31). Both clamping arms (31) are provided with a first locking hole (311). The two first locking holes (311) are coaxially aligned. The first locking bolt passes through at least one of the first locking holes (311) to fix the guardrail in the limiting groove.

5. The quick-installation platform protection device according to claim 4, characterized in that, The roller (4) is mounted between the two clamping arms (31) via a support shaft, the axial direction of which is parallel to the axial direction of the first locking hole (311).

6. The quick-installation platform protection device according to claim 5, characterized in that, The bottom of the support panel (1) extends downward with a mounting protrusion (13), and the upper end of the support leg (2) is provided with a mounting groove (21) that is adapted to the mounting protrusion (13). The mounting protrusion (13) can be detachably embedded in the mounting groove (21).

7. The quick-installation platform protection device according to claim 6, characterized in that, The mounting protrusion (13) is provided with a second locking hole (131), and the mounting groove (21) is provided with a third locking hole (211) on its side wall. The second locking hole (131) and the third locking hole (211) are coaxially aligned, and a second locking bolt is inserted into the second locking hole (131) and the third locking hole (211).

8. The quick-installation platform protection device according to claim 7, characterized in that, It also includes a locking component (5) disposed between the two support panels (1) and configured to lock the two support panels (1) to prevent the two support panels (1) from rotating relative to each other.

9. The quick-installation platform protection device according to claim 8, characterized in that, Both frames (11) are provided with connecting brackets (111), and the two connecting brackets (111) are connected by a hinge shaft. The locking assembly (5) includes a third locking bolt and a fourth locking hole (51) provided on the connecting bracket (111). The fourth locking holes (51) of the two connecting brackets (111) are coaxially aligned. The third locking bolt is configured to pass through the two aligned fourth locking holes (51) at the same time to prevent the two connecting brackets (111) from rotating relative to each other.

10. The quick-installation platform protection device according to claim 9, characterized in that, The first locking hole (311), the second locking hole (131), the third locking hole (211) and the fourth locking hole (51) are all fitted with reinforcing bushings.

Images