A fan blade hoisting personnel protection device

Abstract

A fan blade hoisting personnel protection device, including a waist belt, a shoulder strap, a leg strap, a leg ring and a back plate; the back plate is provided with a base ring with an annular sliding groove and a rotatable bottom plate, which cooperates with the outer corrugated pipe of the safety rope to prevent rope body winding; the leg strap is connected with a reversible hip support plate, and an elastic rope is arranged between the hip support plate and the waist belt; the inner side of the leg ring has an inflatable air bag; the shoulder strap is connected with a magnetic lock buckle chest strap, and the waist belt is provided with an LED light belt and a lock ring. The device solves the problems of safety rope winding and leg compression of existing protection devices, improves the safety, comfort and operation flexibility of high-altitude work, and is suitable for fan blade hoisting scenes.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine equipment installation engineering technology, and in particular to a protective device for personnel involved in the hoisting of wind turbine blades. Background Technology

[0002] During the installation of wind power equipment, the hoisting of wind turbine blades is a high-altitude and high-risk operation, and construction personnel must wear safety protective equipment to ensure operational safety. Currently, traditional hoisting safety belts are usually made of high-strength polyester webbing or even higher-strength fiber materials, and their structure is mostly composed of a waist belt, shoulder straps, and leg straps, which are connected to the hoisting equipment through a safety rope.

[0003] However, the existing technology has the following significant drawbacks: 1. During wind turbine blade hoisting operations, personnel need to frequently adjust their posture around the blades. However, existing safety harnesses often have their safety ropes directly fixed to the anchor points behind them, lacking directional rotation or anti-entanglement structures. In environments with limited space at heights and complex blade surface structures, safety ropes are prone to entanglement with the blade's reinforcing ribs, hoisting ropes, personnel's clothing, or tool belts. This can lead to the safety rope getting stuck, affecting the force transmission during emergency movements; or, in severe cases, uneven stress on the safety rope due to entanglement, resulting in localized wear or breakage. In the event of a fall, the entangled safety rope may not be able to unwind in time, directly causing a safety accident. 2. During wind turbine blade hoisting, personnel need to perform multiple steps and climbs. Existing safety harnesses often have fixed leg straps, concentrating body weight and traction on the groin during hoisting. Prolonged work can obstruct blood circulation in the legs, causing numbness, soreness, and other discomfort. This not only reduces operational precision but may also affect climbing stability due to leg weakness. Furthermore, the rigid leg straps restrict leg movement, leading to slow movements when adjusting blade alignment and reducing construction efficiency. 3. Existing safety belts mostly rely on the waist and shoulders to bear the main weight, and are not designed with a support structure for the posture of "personnel needing to partially lean against the blades" when hoisting wind turbine blades. This can easily cause waist fatigue during long-term operation. In addition, most products lack visibility design in low-light environments, and personnel in the shadow area of ​​the blades are easily overlooked by the hoisting equipment operators, posing a collision risk. Summary of the Invention

[0004] Existing equipment still cannot meet the comprehensive needs of wind turbine blade hoisting personnel for "safety, comfort, and flexibility." Therefore, developing a specialized protective device adapted to wind turbine blade hoisting scenarios, capable of preventing safety rope entanglement and reducing leg pressure, has become crucial to ensuring the safety of such workers.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A protective device for personnel hoisting wind turbine blades includes a waist belt, shoulder straps, leg straps, and leg clamps. The waist belt has a ring structure, with shoulder straps connected to the upper end of the waist belt and leg straps connected to both sides of the lower end of the waist belt. Leg clamps are connected to the ends of the leg straps. Backrest plates are connected between the shoulder straps, and a safety rope is movably connected to the backrest plates. A hip support plate is provided on the inner side of the waist belt, and the two sides of the hip support plate are rotatably connected to the leg straps.

[0006] In a preferred embodiment, the shoulder strap and the back panel are detachably connected by multiple rivets. The back panel is an integral flexible structure, and a base ring is provided at the center of the back panel. The safety rope is rotatably connected to the base ring.

[0007] In a preferred embodiment, an annular groove is provided inside the base ring, the chassis is engaged in the annular groove and can rotate freely around its own axis, a conical column is provided at the axis of the chassis and a safety rope is connected thereto; the outer wall of the safety rope is fitted with a corrugated tube, the corrugated tube being close to one end of the chassis.

[0008] In a preferred embodiment, the hip support is positioned below the waist belt, and the two sides of the hip support are movably connected to the leg straps via a rotating shaft. The hip support can rotate freely around the axis of the rotating shaft to form a flip-opening mechanism. Baffles are provided at both ends of the rotating shaft, and multiple elastic cords are connected between the upper surface of the hip support and the waist belt.

[0009] In a preferred embodiment, a connecting strap is connected to the lower end of the hip support plate, and a connecting hole is provided at the end of the connecting strap. A corresponding connecting buckle is provided on the waist belt, and a corresponding slot is provided on the connecting buckle. When the hip support plate is flipped down and opened, the connecting strap is inserted into the slot through the connecting hole to lock the hip support plate.

[0010] In the preferred embodiment, a flexible pad is installed on the hip support board.

[0011] In a preferred embodiment, a chest strap is connected between the shoulder straps, and the ends of the chest strap are connected to each other by a magnetic buckle.

[0012] In a preferred embodiment, an airbag is provided on the inner side of the leg clamp, and the airbag is provided with an inflation / deflation port.

[0013] In a preferred embodiment, LED light strips are provided on both sides of the belt, and a button battery is installed on the belt. The button battery is electrically connected to the LED light strips through a pre-embedded wire inside the belt.

[0014] In a preferred embodiment, the belt is provided with multiple buckle rings at the front and back, and the multiple buckle rings are equidistant and parallel on the belt.

[0015] A protective device for personnel lifting wind turbine blades, which has the following beneficial effects: 1. This invention utilizes a rotating connection structure at the center of the harness plate, combined with a rotatable chassis and an annular groove, to allow the safety rope to rotate freely with the personnel's movements. When the hoisting personnel adjust their posture around the wind turbine blades, the safety rope can synchronously adapt to the direction of movement, preventing entanglement with the blade structure, hoisting ropes, or personnel's belongings. Simultaneously, the corrugated tube on the outer wall of the safety rope further constrains the rope's direction, reducing the problem of rope twisting and knotting. This design structurally eliminates the potential for jamming, uneven stress, or wear and breakage caused by safety rope entanglement, ensuring that the safety rope can properly unfold and cushion the fall, significantly reducing the risk of accidents. 2. The airbags inside the leg straps can be flexibly adjusted for tightness through inflation and deflation, avoiding the localized compression of the legs caused by traditional leg straps; the hip support plate can rotate and conform to the buttocks with the operator's movements, transferring some of the body weight from the legs to the buttocks, and further dispersing local pressure with the flexible padding, alleviating problems such as obstructed blood circulation and muscle fatigue in the legs. At the same time, the elastic rope between the hip support plate and the waist belt can provide elastic support when the operator climbs and bends over, and together with the synergistic fixation of the shoulder straps and chest straps, it forms a three-point force balance of "shoulder-waist-hip", effectively reducing the burden on the waist and adapting to the operation requirements of frequent posture adjustments during wind turbine blade hoisting; 3. The hip support plate can be freely flipped and locked via a connecting structure, allowing for switching between support and stowage modes as needed, preventing interference with climbing, tool operation, and other actions. The back straps feature a flexible structure that conforms to the curve of the operator's back, without restricting upper limb movement, ensuring smooth movement when connecting blades. Furthermore, the LED light strip on the waist belt enhances visibility in low-light conditions, preventing the operator from overlooking the worker. Multiple locking loops allow for flexible connection of tool bags or spare safety ropes, reducing the burden of tool management during high-altitude operations and adapting to different work conditions. 4. The shoulder straps and backrest plates are detachably connected. If some parts are worn, they can be replaced individually without scrapping the whole device, thus extending the service life of the device. The core components are all made of wear-resistant materials, which can adapt to the complex outdoor high-altitude environment of wind turbine blade hoisting, reduce maintenance frequency, and reduce long-term use costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the back safety rope connection structure of this utility model; Figure 3 This is a schematic diagram of the back structure of this utility model; Figure 4 This is a top view of the overall structure of this utility model; Figure 5 This is a frontal plan view of the overall structure of this utility model.

[0017] In the diagram: 1. Waist belt; 2. Shoulder strap; 3. Leg strap; 4. Leg clamp; 5. Backrest plate; 6. Safety rope; 7. Hip support plate; 8. Rivet buckle; 9. Base ring; 10. Circular groove; 11. Chassis; 12. Corrugated tube; 13. Elastic rope; 14. LED light strip; 15. Button battery; 16. Flexible pad; 17. Connecting strap; 18. Connecting buckle; 19. Slot; 20. Connecting hole; 21. Airbag; 22. Inflation / depression port; 23. Rotating shaft; 24. Baffle; 25. Chest strap; 26. Magnetic lock; 27. Locking ring. Detailed Implementation

[0018] like Figure 1 As shown, a protective device for personnel hoisting wind turbine blades includes a waist belt 1, shoulder straps 2, leg straps 3, and leg clamps 4. The waist belt 1 is a ring structure made of high-strength polyester webbing with a thickness of 2-3mm and a width of 8-10cm to distribute pressure on the waist. Two shoulder straps 2 are symmetrically connected to the upper end of the waist belt 1 by sewing. The shoulder straps 2 are made of high-elastic webbing with a width of 5-6cm and have an adjustable buckle structure in the middle. The lower end of the waist belt 1 is connected to the two sides of the leg straps 3 by metal buckles. The length of the leg straps 3 can be adjusted by Velcro. The end of the leg straps 3 is connected to the leg clamps 4. The leg clamps 4 are arc-shaped to fit the contour of the upper thigh and the inner edge is rounded to avoid skin friction. A backrest plate 5 is connected between the shoulder straps 2, and a safety rope 6 is movably connected to the backrest plate 5. A hip support plate 7 is fixed to the inner side of the waist belt 1 by sewing. The two sides of the hip support plate 7 are rotatably connected to the leg straps 3 by rotating connectors to ensure the follow-through of personnel during movement.

[0019] Preferred solutions include Figure 2 As shown, the shoulder strap 2 and the back strap plate 5 are detachably connected by 3-5 rivets 8. The rivets 8 are made of stainless steel to improve the connection strength. The back strap plate 5 is an integrated flexible structure made of high-elasticity nylon composite material with a thickness of 1-1.5mm, which can adaptively fit the curve of the back. The center of the back strap plate 5 is fixed with a base ring 9 by injection molding. The base ring 9 is made of wear-resistant ABS plastic. The safety rope 6 and the base ring 9 can rotate 360° through a rotating structure to ensure that the rope does not twist when the person turns around.

[0020] Preferred solutions include Figure 2As shown, the base ring 9 has an annular groove 10 with a depth of 2-3mm and a width of 1.5-2mm. The inner sidewall of the groove is polished to reduce friction. The base plate 11 is made of stainless steel with a thickness of 2-2.5mm. Its edge is engaged in the annular groove 10 and can rotate freely around its own axis with a rotational resistance of ≤5N. A conical column is integrally formed at the axis of the base plate 11. The end of the conical column has an annular groove. The safety rope 6 is fixed in the groove by a buckle. The outer wall of the safety rope 6 is fitted with a corrugated tube 12. The corrugated tube 12 is made of flame-retardant PVC material and is 15-20cm long. One end near the base plate 11 is fixed to the base plate 11 with glue, and the other end hangs down naturally to constrain the direction of the rope.

[0021] Preferred solutions include Figure 3 As shown, the hip support plate 7 is located below the waist belt 1, made of lightweight PP plastic sheet with a thickness of 2-3mm, and the surface is curved to fit the contour of the buttocks; the two sides of the hip support plate 7 are movably connected to the leg straps 3 through a rotating shaft 23, which is a stainless steel shaft with a diameter of 5-6mm, and both ends pass through the leg straps 3 and are fixed with nuts; the hip support plate 7 can rotate freely around the axis of the rotating shaft 23 to form a flipping opening angle of 0-90°; the two ends of the rotating shaft 23 are provided with baffles 24 with a diameter larger than the shaft body to prevent the rotating shaft 23 from moving axially; 4-8 elastic ropes 13 are connected between the upper end of the hip support plate 7 and the waist belt 1. The elastic ropes 13 are made of high-elastic spandex material, with a natural length of 8-10cm and an elastic force of 10-15N when stretched to 15cm, providing elastic support without restricting movement.

[0022] Preferred solutions include Figure 4 As shown, the lower end of the hip support plate 7 is connected by a connecting strap 17 sewn on. The connecting strap 17 is a wear-resistant webbing with a width of 2-3cm. The end of the connecting strap 17 has a connecting hole 20 with a diameter of 8-10mm. A connecting buckle 18 is fixed to the waist belt 1 at the corresponding position by a rivet. The connecting buckle 18 is made of ABS plastic. The connecting buckle 18 has a corresponding slot 19 with a width that matches the connecting strap 17. The slot 19 has an elastic protrusion on its inner side. When the hip support plate 7 is flipped down to open to 70-90°, the connecting strap 17 is inserted into the elastic protrusion in the slot 19 through the connecting hole 20 to achieve a stable lock on the hip support plate 7. To unlock, press the elastic protrusion to release it.

[0023] Preferred solutions include Figure 4 As shown, a flexible pad 16 is detachably installed on the buttock support plate 7 via Velcro. The flexible pad 16 is made of 3-5mm thick memory foam material, with a breathable mesh fabric covering the surface. It is curved and recessed on one side of the buttocks to improve contact comfort and reduce friction.

[0024] Preferred solutions include Figure 5As shown, a chest strap 25 is connected between the shoulder straps 2. The chest strap 25 is made of polyester webbing with a width of 4-5cm and has a length adjustment buckle in the middle. The two ends of the chest strap 25 are respectively fixed with magnetic buckles 26. The magnetic buckles 26 are made of neodymium iron boron magnets with an attraction force of ≥30N to ensure a firm connection. At the same time, they can be separated by one hand, which is convenient for quick wearing or emergency removal.

[0025] Preferred solutions include Figure 4 As shown, an airbag 21 is fixed to the inner side of the leg ring 4 with adhesive. The airbag 21 is made of aging-resistant nitrile rubber with a thickness of 0.3-0.5mm. The airbag 21 is provided with an inflation / deflation port 22, which is a one-way valve structure. It can be inflated by a manual air pump. After inflation, the thickness of the airbag 21 can reach 1-2cm, which conforms to the curve of the leg and disperses pressure. After deflation, the thickness is ≤5mm, which is convenient for storage.

[0026] Preferred solutions include Figure 3 As shown, LED light strips 14 are sewn on both sides of the waist belt 1. The LED light strips 14 are waterproof flexible light strips, 15-20cm in length, emitting a warning yellow light with a brightness ≥500cd / m². A button battery 15, model CR2032, with a capacity of 220mAh, is fixed to the waist belt 1 by Velcro. The button battery 15 is electrically connected to the LED light strip 14 through copper wires embedded in the waist belt 1. An independent push switch is provided on the outside of the light strip, which can control the constant light or flashing mode. The battery lasts for 8-12 hours on a single charge.

[0027] Preferred solutions include Figure 3 As shown, the front and back of the belt 1 are symmetrically equipped with 4-6 buckle rings 27 by rivets. The buckle rings 27 are made of high-strength aluminum alloy, with a diameter of 15-20mm and a thickness of 2-3mm. The multiple buckle rings 27 are equidistant and parallel on the belt 1 in the horizontal direction, with a spacing of 5-8cm. They can be adapted to tool hooks or spare safety ropes of different specifications to improve carrying convenience.

Claims

1. A protective device for personnel lifting wind turbine blades, comprising a waist belt (1), shoulder straps (2), leg straps (3), and leg clamps (4), characterized in that: The waist belt (1) is a ring structure. The upper end of the waist belt (1) is connected to the shoulder strap (2), and the two sides of the lower end of the waist belt (1) are connected to the leg straps (3). The end of the leg straps (3) is connected to the leg rings (4). The shoulder straps (2) are connected to the back straps (5), and the safety rope (6) is movably connected to the back straps (5). The inner side of the waist belt (1) is provided with a hip support plate (7), and the two sides of the hip support plate (7) are rotatably connected to the leg straps (3).

2. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: The shoulder strap (2) and the back strap plate (5) are detachably connected by multiple rivet buckles (8). The back strap plate (5) is an integral flexible structure. A base ring (9) is provided at the center of the back strap plate (5). The safety rope (6) is rotatably connected to the base ring (9).

3. The personnel protective device for hoisting wind turbine blades according to claim 2, characterized in that: An annular groove (10) is provided inside the base ring (9). The chassis (11) is engaged in the annular groove (10) and can rotate freely around its own axis. A conical column is provided at the axis of the chassis (11) and connected to a safety rope (6). A corrugated tube (12) is sleeved on the outer wall of the safety rope (6). The corrugated tube (12) is close to one end of the chassis (11).

4. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: The hip support plate (7) is located below the waist belt (1). The two sides of the hip support plate (7) are movably connected to the leg belt (3) through the rotating shaft (23). The hip support plate (7) can rotate freely around the axis of the rotating shaft (23) to form a flip opening and closing. The two ends of the rotating shaft (23) are provided with baffles (24). Multiple elastic ropes (13) are connected between the upper end of the hip support plate (7) and the waist belt (1).

5. The personnel protective device for hoisting wind turbine blades according to claim 4, characterized in that: The lower end face of the hip support (7) is connected to a connecting strap (17), and the end of the connecting strap (17) is provided with a connecting hole (20). The waist belt (1) is provided with a corresponding connecting buckle (18), and the connecting buckle (18) is provided with a corresponding slot (19). When the hip support (7) is flipped down and opened, the connecting strap (17) is inserted into the slot (19) through the connecting hole (20) to lock the hip support (7).

6. The personnel protective device for hoisting wind turbine blades according to claim 4, characterized in that: A flexible pad (16) is installed on the hip support board (7).

7. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: A chest strap (25) is connected between the shoulder straps (2), and the ends of the chest straps (25) are connected to each other by magnetic buckles (26).

8. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: An airbag (21) is provided on the inner side of the leg ring (4), and an inflation / deflation port (22) is provided on the airbag (21).

9. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: LED light strips (14) are provided on both sides of the belt (1), and a button battery (15) is installed on the belt (1). The button battery (15) is electrically connected to the LED light strip (14) through the pre-embedded wire in the belt (1).

10. The personnel protective device for hoisting wind turbine blades according to claim 1, characterized in that: Multiple buckle rings (27) are installed on the front and back of the belt (1), and the multiple buckle rings (27) are equidistant and parallel on the belt (1).

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