Slidable fall arrest device

Abstract

The utility model discloses a slidable anti-falling device, including slide rail, the slide rail is installed around the outer periphery of fan tower drum, a plurality of anti -falling hooks are slidably connected in the slide rail, be provided with the lug on the anti -falling hook, be provided with the safety rope on the lug, a slidable anti -falling device of the utility model, through the sliding design of pulley on the arc slide rail, realized the free movement of high altitude operation personnel safety hook one loading can all -time, thoroughly avoided the secondary falling risk that traditional operation brought frequently unhooked and hung hook, and open -type slide rail cooperated with detachable end cap, both ensured that anti -falling hook will not accidental slip, and convenient later maintenance replacement.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power technology, and in particular to a sliding anti-fall device. Background Technology

[0002] As the offshore wind power industry flourishes towards deeper waters and larger scale, the size of wind turbine towers is also increasing. Especially for the base section of the tower, the maximum diameter now exceeds 10 meters. Regardless of the foundation type, the wind turbine tower is connected to the top flange of the foundation via its bottom flange and secured with high-strength bolts. During later work such as bolt inspections, workers need to walk around the outside of the tower. Because this involves working at height, a ring of fixed fall arrest hooks is typically installed around the outside of the tower. Traditional methods require maintenance personnel to frequently remove and reattach their safety ropes to different fixed hooks; otherwise, their movement is restricted. However, this repetitive operation itself carries the risk of falls from height. Utility Model Content

[0003] This utility model patent aims to address the shortcomings of the prior art by providing a sliding anti-fall device to solve the technical problem that the safety hook is inconvenient to hang and requires frequent switching and re-hanging of the hook.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sliding anti-fall device, including a slide rail, which is fixedly installed on the periphery of the wind turbine tower. The cross-section of the slide rail is a double-groove structure with a central partition, forming two parallel pulley channels. A miniature slide is provided on the central partition. A pulley assembly is provided inside the slide rail. An anti-fall hook is provided on the pulley assembly. The tail of the anti-fall hook is movably connected to a sliding rod through a hinge. One end of the sliding rod is slidably connected to the miniature slide.

[0005] Preferably, the slide rail is fixedly connected to the outer periphery of the wind turbine tower by welding.

[0006] Preferably, the wind turbine tower has threaded holes along its outer periphery, and the slide rail is detachably connected to the outer periphery of the wind turbine tower by bolts.

[0007] Preferably, the slide rail is an annular slide rail, and end caps are provided at both ends of the slide rail.

[0008] Preferably, the end cap is detachably connected to the end of the slide rail by fastening screws.

[0009] Preferably, the surface of the slide rail is provided with an anti-rust coating.

[0010] Preferably, there are multiple anti-fall hooks, which are slidably connected to the same slide rail.

[0011] Preferably, the anti-fall hook, pulley block and slide bar are all made of stainless steel.

[0012] Preferably, the slide rail is made of aluminum alloy profile and has an anodized layer on its surface.

[0013] Preferably, the fall arrestor hook has one or more hook holes for connecting an external safety rope hook.

[0014] The beneficial effects of this utility model are: This utility model discloses a sliding fall arrest device. Through the sliding design of pulleys on an arc-shaped slide rail, the safety hook for high-altitude workers can be freely moved throughout the entire process after being attached once. This completely avoids the risk of secondary falls caused by frequent hook removal in traditional operations. The open slide rail, combined with a detachable end cap, ensures that the fall arrest hook will not slip off accidentally and facilitates later maintenance and replacement. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structural layout of this utility model; Figure 2 This is a schematic diagram of the slide rail of this utility model; Figure 3 A schematic diagram of the anti-fall hook structure; Figure 4 This is a schematic diagram of the slide rail; In the diagram: 1. Wind turbine tower; 2. Slide rail; 3. Fall arrestor hook; 4. End cap; 5. Fastening screw; 6. Pulley block; 7. Hinge; 21. Central partition; 22. Miniature slide rail; 31. Hanging hole; 71. Slide rod. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-3As shown, a sliding fall arrestor includes a slide rail 2, which is fixedly installed on the periphery of a wind turbine tower 1. The slide rail 2 has a double-groove structure with a central partition 21, forming two parallel pulley channels. A miniature slide rail 22 is provided on the central partition 21. A pulley assembly 6 is provided inside the slide rail 2, and a fall arrestor hook 3 is provided on the pulley assembly 6. The tail of the fall arrestor hook 3 is movably connected to a slide rod 71 via a hinge 7. One end of the slide rod 71 is slidably connected to the miniature slide rail 22. In this embodiment, this core structure constitutes a double safety mechanism: the pulley assembly 6 is embedded in the double-groove slide rail to bear the weight and movement of the main body; at the same time, the tail slide rod 71 and the miniature slide rail 22 constitute a secondary safety system, forming secondary protection and effectively preventing the risk of falling due to accidental derailment of the main pulley. The hinge 7 and the slide rod 71 cooperate.

[0019] Preferably, the slide rail 2 is fixedly connected to the outer periphery of the wind turbine tower 1 by welding; in this embodiment, the welding method can achieve a permanent high-strength connection between the slide rail 2 and the outer periphery of the tower 1, with good structural integrity and ensuring the long-term stability of the system.

[0020] Preferably, the wind turbine tower 1 has threaded holes around its outer periphery, and the slide rail 2 is detachably connected to the outer periphery of the wind turbine tower 1 by bolts. In this embodiment, the bolt connection provides a detachable installation solution, which facilitates quick installation and precision adjustment on site. It also greatly facilitates the subsequent maintenance and replacement of the tower wall or the slide rail itself, thus improving the maintainability of the equipment.

[0021] Preferably, the slide rail 2 is an annular slide rail, and end caps 4 are provided at both ends of the slide rail 2. In this embodiment, the annular slide rail ensures that the operator can carry out continuous annular operation around the tower without interruption, eliminating dead angles of movement. The end caps 4 are used to seal both ends of the slide rail 2 and are a key safety structure to prevent the internal sliding parts from accidentally coming off the ends.

[0022] Preferably, the end cap 4 is detachably connected to the end of the slide rail 2 by fastening screws 5. In this embodiment, the end cap 4 is fixed by fastening screws 5, making the disassembly and assembly of the end cap 4 simple. This design facilitates the insertion of internal components such as anti-fall hooks 3 during initial installation, and also facilitates future inspection, cleaning, or component replacement of the slide rail.

[0023] Preferably, the surface of the slide rail 2 is provided with an anti-rust coating. For humid environments, an anti-rust coating (such as epoxy zinc-rich primer combined with polyurethane topcoat) can be provided on the surface of the slide rail 2 to improve its corrosion resistance.

[0024] Preferably, there are multiple fall arrest hooks 3, which are slidably connected to the same slide rail 2. In this embodiment, in order to ensure that multiple maintenance personnel can attach their safety ropes to different fall arrest hooks 3 at the same time, multiple fall arrest hooks 3 can be set on the slide rail 2. In this embodiment, it is preferred that 3 fall arrest hooks are used, and each fall arrest hook 3 can work independently and in parallel without interfering with each other.

[0025] Preferably, the fall arrest hook 3, pulley block 6 and slide rod 71 are all made of stainless steel. In this embodiment, the fall arrest hook 3, pulley block 6 and slide rod 71 are key load-bearing and moving parts in the device. They are made of stainless steel (such as 304 or 316 stainless steel) to ensure the long-term reliability of the core functional components in harsh environments.

[0026] Preferably, the slide rail 2 is made of aluminum alloy profile with an anodized layer on its surface. In this embodiment, the slide rail 2 uses aluminum alloy profile, which can achieve lightweight structure and reduce the additional load on the wind turbine tower. The anodized surface treatment not only further enhances its corrosion resistance, but also improves surface hardness and wear resistance, extending the service life of the slide rail.

[0027] Preferably, the fall arrestor hook 3 has one or more hook holes 31 on its body for connecting external safety rope hooks. In this embodiment, the multiple hook holes 31 increase the flexibility and selectivity of safety rope hooking, can adapt to different types of safety belt hooks, and can realize higher safety level operation modes such as alternating double safety ropes, thus improving the convenience and safety of use.

[0028] The specific working method of this application is as follows: Before the wind turbine tower 1 is manufactured or hoisted, the slide rail 2 is first fixedly installed at a preset working height on the outside of the tower 1 by welding or bolting. If it is a segmented slide rail, it is necessary to ensure that the connection between each segment is accurate and the transition is smooth. After installation, the end cap 4 is fixed to both ends of the slide rail 2 with fastening screws 5. Before operation, the maintenance personnel attach the safety rope hook of the full-body safety belt to any of the hook holes 31 on the body of the fall arrest hook 3. At this time, the personnel can move horizontally around the outside of the tower 1. When the personnel move along the outside of the tower 1, it will drive the fall arrest hook 3 to move synchronously. The fall arrest hook 3 rolls in the double groove structure of the slide rail 2 through the pulley group 6 on its upper part. This is the main load-bearing and guiding system, realizing the free and continuous movement of personnel. At the same time, the slide rod 71 at the tail of the fall arrest hook 3 slides synchronously in the miniature slide rail 22 on the central partition 21. The hinge 7 structure allows the hook to deflect slightly when a person moves or changes posture, while the clearance fit between the slide rod 71 and the miniature slide rail 22 allows for small lateral displacement. This secondary safety system constitutes crucial secondary protection: even in extreme situations (such as damage or detachment of the main pulley block 6 due to a large impact), the slide rod 71 remains effectively restrained within the miniature slide rail 22, capable of instantly bearing the load and preventing the entire device from separating from the slide rail, thus avoiding a fall. If it is necessary to replace or maintain a fall-prevention hook 3 within the slide rail 2, the fastening screw 5 can be unscrewed, and the end cap 4 at one end can be removed to remove the hook from the end of the slide rail. After maintenance, reinstall in reverse order.

[0029] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A sliding fall arrestor, characterized in that, Includes a slide rail (2), which is fixedly installed on the periphery of the wind turbine tower (1). The slide rail (2) has a cross-section with a double groove structure having a central partition (21) to form two parallel pulley channels. A miniature slide rail (22) is provided on the central partition (21). A pulley assembly (6) is provided inside the slide rail (2). A fall arrest hook (3) is provided on the pulley assembly (6). The tail of the fall arrest hook (3) is movably connected to a slide rod (71) through a hinge (7). One end of the slide rod (71) is slidably connected to the miniature slide rail (22).

2. The sliding fall arrestor according to claim 1, characterized in that: The slide rail (2) is fixedly connected to the outer periphery of the wind turbine tower (1) by welding.

3. The sliding fall arrestor according to claim 1, characterized in that: The wind turbine tower (1) has threaded holes around its outer periphery, and the slide rail (2) is detachably connected to the outer periphery of the wind turbine tower (1) by bolts.

4. The sliding fall arrestor according to claim 1, characterized in that: The slide rail (2) is an annular slide rail, and end caps (4) are provided at both ends of the slide rail (2).

5. A sliding fall arrestor according to claim 4, characterized in that: The end cap (4) is detachably connected to the end of the slide rail (2) by fastening screws (5).

6. A sliding fall arrestor according to claim 5, characterized in that: The slide rail (2) has a rust-proof coating on its surface.

7. A sliding fall arrestor according to claim 1, characterized in that: The number of the anti-fall hooks (3) is multiple, and they are all slidably connected to the same slide rail (2).

8. A sliding fall arrestor according to claim 1, characterized in that: The anti-fall hook (3), pulley block (6) and slide bar (71) are all made of stainless steel.

9. A sliding fall arrestor according to claim 1, characterized in that: The slide rail (2) is made of aluminum alloy profile and has an anodized layer on its surface.

10. A sliding fall arrestor according to claim 1, characterized in that: The fall arrestor hook (3) has one or more hook holes (31) on its body for connecting the hook of an external safety rope.

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