Safety rope fixing device and method for wind power blade

Abstract

The invention relates to the technical field of wind power blades, and discloses a wind power blade safety rope fixing device and method.The wind power blade safety rope fixing device comprises a safety buckle, one end of the safety buckle is rotationally connected with a rotating rod, the outer side wall of the rotating rod is sleeved with a first threaded sleeve in a threaded mode, and a limiting structure is arranged on the inner wall of the safety buckle and comprises a connecting rod; the lower end face of the connecting rod is fixedly connected with a threaded column, the lower portion of the outer side wall of the threaded column is sleeved with a second threaded sleeve in a threaded mode, limiting bolts are arranged on the upper portions of the centers of the front end face and the rear end face of the second threaded sleeve, and the two limiting bolts penetrate through the front end face and the rear end face of the second threaded sleeve to reach the front inner side wall and the rear inner side wall of the second threaded sleeve. According to the device, the device is simple in structure, few in structure, small in size, small in occupied space, light in weight and easy to carry, and in the using process, after the device is fixed through the limiting structure, the influence of vibration on the device can be prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blades, and particularly to a safety rope fixing device for wind turbine blades. Background Art

[0002] A wind turbine, fully known as a wind power generation unit, is a device that converts wind energy into electrical energy and is the core equipment of a wind power generation system. With the continuous growth of the global demand for clean energy, wind turbines are playing an increasingly important role in the energy field. The following will introduce in detail from aspects such as the working principle, types, main components, application advantages, and development trends of wind turbines.

[0003] The working principle of a wind turbine is based on the law of electromagnetic induction. When the wind blows through the wind turbine blades, the blades are subjected to a wind force to generate a rotational torque, driving the wind wheel to rotate. The wind wheel is usually connected to a low-speed shaft, and the low-speed shaft then transmits the power to a speed-increasing gearbox (some direct-drive wind turbines do not have a speed-increasing gearbox). The speed-increasing gearbox increases the low rotational speed of the wind wheel to the high rotational speed required by the generator, and then drives the generator rotor to rotate. The magnetic field in the generator stator interacts with the conductors in the rotor to generate an induced electromotive force, thereby converting mechanical energy into electrical energy. The generated electrical energy is stepped up by a transformer and then connected to the power grid to achieve the conversion and transmission of wind energy into electrical energy.

[0004] During the operation of a wind turbine, the blades are vulnerable components. When the blades are damaged, workers need to maintain the blades. For the safety of the workers, a safety rope must be used to protect the workers' safety. The safety rope fixing device for wind turbine blades is a very important safety facility in the wind power industry. On the high-altitude platform of wind turbine blades, workers need to carry out hanging operations through the safety rope.

[0005] After retrieval, a Chinese patent discloses a safety rope fixing device for wind turbine blades (publication number: CN221673248U). Although in this patented technology, workers can change the fixing points as needed, and by setting a limiting mechanism, the fixing device can be limited to prevent the fixing device from rotating randomly, the device is too bulky, not easy to carry, and the shaking generated during use is likely to cause the threaded rod to become loose, resulting in unstable fixing. Therefore, those skilled in the art have provided a safety rope fixing device for wind turbine blades to solve the problems raised in the above background art. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a safety rope fixing device and method for wind turbine blades. The structure of the present invention is simple, with fewer components, a smaller volume, occupying less space, being light in weight and easy to carry. During the use process, after being fixed by the limiting structure, it can prevent the influence of vibration on the device.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A safety rope fixing device for a wind power blade, comprising a safety buckle, one end of the safety buckle is rotatably connected to a rotating rod, a first threaded sleeve is threadedly sleeved on the outer side wall of the rotating rod, and a limiting structure is provided on the inner upper wall of the safety buckle; a first ring is provided at the center of the lower end face of the safety buckle, and a buffer structure is provided below the first ring.

[0008] A further improvement of the present invention lies in that the limiting structure includes a connecting rod, a threaded column is fixedly connected to the lower end face of the connecting rod, a second threaded sleeve is threadedly sleeved on the lower part of the outer side wall of the threaded column, and limiting bolts are provided at the upper centers of the front and rear end faces of the second threaded sleeve, and the two limiting bolts respectively penetrate through the front and rear end faces of the second threaded sleeve and reach the inner side walls of the front and rear of the second threaded sleeve; A further improvement of the present invention lies in that the two limiting bolts are respectively threadedly connected to the second threaded sleeve.

[0009] A further improvement of the present invention lies in that the buffer structure includes a first spring, the upper end of the first spring is fixedly connected to a second ring, the second ring is sleeved on the first ring, and the lower end of the first spring is fixedly connected to a third ring.

[0010] A further improvement of the present invention lies in that a second spring is provided inside the first spring, the upper end of the second spring is fixedly connected to a fourth ring, the fourth ring is fixedly sleeved on the upper end of the first spring, and the lower end of the second spring is fixedly connected to a fifth ring, the fifth ring is fixedly sleeved on the lower end of the first spring.

[0011] A further improvement of the present invention lies in that the third ring is used to connect the safety rope.

[0012] A further improvement of the present invention lies in that the second ring is used to connect with the safety buckle.

[0013] A safety rope fixing method for a wind power blade, comprising: By rotating the rotating rod, the safety buckle is buckled on two railings, by rotating the first threaded sleeve, the first threaded sleeve is sleeved on the ends of the rotating rod and the safety buckle to fix the connection position of the rotating rod and the safety buckle, and then the device is fixed on the railing through the limiting structure, and finally the impact force received by the staff is reduced through the buffer structure.

[0014] A further improvement of the present invention lies in that fixing the device on the railing through the limiting structure includes: By rotating the second threaded sleeve in the forward direction, the second threaded sleeve moves downward, and the end of the second threaded sleeve abuts against the upper railing. Then, by rotating the two limit bolts in the forward direction, the two limit bolts move inward into the connecting rod and abut against the surface of the threaded column, facilitating an increase in the frictional force between the second threaded sleeve and the threaded column.

[0015] A further improvement of the present invention lies in reducing the impact force received by the staff through a buffer structure, including: By pulling both ends of the first spring with the second spring, the first spring can withstand a greater tensile force. The forces borne by the first spring and the second spring are part of the total tensile force, thereby reducing the risk of overloading of a single spring.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects: In the present invention, when the safety rope fixing device for a wind power blade is in use, by rotating the rotating rod, the safety buckle is buckled on the two railings. Then, by rotating the first threaded sleeve, the first threaded sleeve is sleeved on the ends of the rotating rod and the safety buckle, facilitating the fixation of the connection position between the rotating rod and the safety buckle. Then, the device is fixed on the railing through a limiting structure, thereby improving the stability and preventing loosening caused by vibration. Finally, the impact force received by the staff is reduced through a buffer structure.

[0017] Furthermore, in the present invention, by rotating the second threaded sleeve in the forward direction, the second threaded sleeve moves downward, and the end of the second threaded sleeve abuts against the upper railing. Then, by rotating the two limit bolts in the forward direction, the two limit bolts move inward into the connecting rod and abut against the surface of the threaded column, facilitating an increase in the frictional force between the second threaded sleeve and the threaded column, thereby improving the stability and preventing loosening caused by vibration.

[0018] Furthermore, in the present invention, by pulling both ends of the first spring with the second spring, the first spring can withstand a greater tensile force. The forces borne by the first spring and the first spring are part of the total tensile force, thereby reducing the risk of overloading of a single spring.

[0019] In summary, the present invention has a simple structure, fewer components, a smaller volume, occupies less space, is light in weight, and is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1Stereogram of a safety rope fixing device for a wind power blade proposed by the present invention; Figure 2 Side sectional view of a safety buckle of a safety rope fixing device for a wind power blade proposed by the present invention; Figure 3 Stereogram of a buffer structure of a safety rope fixing device for a wind power blade proposed by the present invention; Figure 4 Side sectional view of a limiting structure of a safety rope fixing device for a wind power blade proposed by the present invention.

[0022] Explanation of reference numerals: 1, safety buckle; 2, limiting structure; 201, connecting rod; 202, threaded post; 203, second threaded sleeve; 204, limiting bolt; 3, rotating rod; 4, first threaded sleeve; 5, first ring; 6, buffer structure; 601, first spring; 602, second ring; 603, third ring; 604, second spring; 605, fourth ring; 606, fifth ring. Detailed implementation manners

[0023] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are regarded as being essentially exemplary rather than restrictive.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is less than that of the second feature.

[0028] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless otherwise clearly indicated by the context, the singular forms of "a", "an" and "the" are intended to include the plural forms.

[0029] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0030] Structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are only exemplary, and may actually deviate due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes and relative positions according to actual needs.

[0031] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0032] Embodiment 1 Refer to Figures 1-4, a safety rope fixing device for a wind turbine blade provided by the present invention includes a safety buckle 1. One end of the safety buckle 1 is rotatably connected to a rotating rod 3. A first threaded sleeve 4 is threadedly sleeved on the outer wall of the rotating rod 3. A limiting structure 2 is provided on the inner upper wall of the safety buckle 1. The device is fixed on the railing through the limiting structure 2 and is not affected by vibration.

[0033] The limiting structure 2 includes a connecting rod 201. A threaded column 202 is fixedly connected to the lower end surface of the connecting rod 201. A second threaded sleeve 203 is threadedly sleeved on the lower part of the outer wall of the threaded column 202. Limiting bolts 204 are provided at the upper center of the front and rear end surfaces of the second threaded sleeve 203. The two limiting bolts 204 respectively penetrate through the front and rear end surfaces of the second threaded sleeve 203 and reach the inner side walls of the front and rear of the second threaded sleeve 203. By rotating the rotating rod 3, the safety buckle 1 is buckled on two railings, and then by rotating the first threaded sleeve 4, the first threaded sleeve 4 is sleeved on the end parts of the rotating rod 3 and the safety buckle 1, which is convenient for fixing the connection position of the rotating rod 3 and the safety buckle 1. Then, by rotating the second threaded sleeve 203 forward, the second threaded sleeve 203 moves downward, and the end part of the second threaded sleeve 203 abuts against the upper railing. Then, by rotating the two limiting bolts 204 forward, the two limiting bolts 204 move into the connecting rod 201 and abut against the surface of the threaded column 202, which is convenient for increasing the friction between the second threaded sleeve 203 and the threaded column 202, thereby improving the stability and preventing loosening caused by vibration.

[0034] The overall design of the limiting structure 2 is simple and consists of a connecting rod 201, a threaded column 202, a second threaded sleeve 203 and limiting bolts 204. The connection and operation methods between the components are easy to understand and implement. Users only need to perform simple rotation operations (such as rotating the second threaded sleeve 203 and the limiting bolts 204 forward) to complete the installation and fixation, reducing the usage difficulty and operation complexity. By rotating the second threaded sleeve 203, its position relative to the threaded column 202 can be conveniently adjusted, thereby realizing flexible adjustment of the limiting height. This adjustability enables the limiting structure 2 to adapt to railings of different heights and sizes, improving its versatility and applicability. By rotating the two limiting bolts 204 forward, they move into the connecting rod 201 and abut against the surface of the threaded column 202, increasing the friction between the second threaded sleeve 203 and the threaded column 202. This design effectively prevents loosening caused by vibration or other external forces, improving the stability and reliability of the limiting structure 2. The design of the limiting structure 2 considers the connection stability between the safety buckle 1 and the railing. By rotating the rotating rod 3 to buckle the safety buckle 1 on two railings and using the first threaded sleeve 4 to fix the connection position of the rotating rod 3 and the safety buckle 1, the safety of the overall structure is further enhanced. This design can ensure that the safety buckle 1 can be firmly fixed on the railing when needed, preventing accidental detachment or loosening.

[0035] At the center of the lower end face of the safety buckle 1, there is a first ring 5. A buffer structure 6 is provided below the first ring 5 to reduce the impact force on the staff through the buffer structure 6.

[0036] The two limit bolts 204 are respectively threadedly connected to the second threaded sleeve 203, facilitating the movement of the two limit bolts 204 along the second threaded sleeve 203 when the two limit bolts 204 are rotated.

[0037] Such as Figure 1 And 3 As shown, the buffer structure 6 includes a first spring 601. The upper end of the first spring 601 is fixedly connected with a second ring 602. The second ring 602 is sleeved on the first ring 5. The lower end of the first spring 601 is fixedly connected with a third ring 603. The safety rope is connected through the third ring 603. The second ring 602 is connected to the safety buckle 1. The first spring 601 can reduce the impact force on the staff.

[0038] A second spring 604 is provided inside the first spring 601. The upper end of the second spring 604 is fixedly connected with a fourth ring 605. The fourth ring 605 is fixedly sleeved on the upper end part of the first spring 601. The lower end of the second spring 604 is fixedly connected with a fifth ring 606. The fifth ring 606 is fixedly sleeved on the lower end part of the first spring 601. By pulling the two ends of the first spring 601 through the second spring 604, the first spring 601 can bear a greater tensile force. The force borne by the first spring 601 and the first spring 601 is a part of the total tensile force, thereby reducing the risk of single spring overload.

[0039] The buffer structure 6 achieves a dual buffering effect through the combined design of the first spring 601 and the second spring 604. The first spring 601 directly reduces the impact force on the staff, while the second spring 604 further enhances the overall buffering performance by pulling both ends of the first spring 601. This design can more effectively absorb and disperse the impact force and protect the safety of the staff. The second spring 604 pulls both ends of the first spring 601, enabling the first spring 601 to withstand a greater tensile force. This design not only enhances the overall load-bearing capacity of the buffer structure 6 but also enables the structure to adapt to more types of application scenarios and load requirements. By distributing the total tensile force to be jointly borne by the first spring 601 and the second spring 604, the risk of individual spring overload is reduced. This design improves the reliability and durability of the buffer structure 6, extends its service life, and reduces the possibility of failures or damages caused by spring overload. The buffer structure 6 is designed compactly, and the connection method between its components is flexible and reliable. The second ring 602 is sleeved on the first ring 5, facilitating connection with the safety buckle 1; the third ring 603 is used to connect the safety rope, enabling the entire structure to be conveniently integrated into the existing safety system. This design not only ensures the buffering performance but also improves the convenience of use. In addition, since the components of the buffer structure 6 adopt a detachable connection method, users can easily disassemble and install when maintenance or component replacement is required. This design reduces the maintenance cost and difficulty and improves the overall economic efficiency.

[0040] The structure of the present invention is simple, with fewer components, smaller volume, less space occupied, light weight, and easy to carry.

[0041] Embodiment 2 Referring to Figures 1-4 , a method for fixing a safety rope for a wind turbine blade provided by the present invention includes: During use, by rotating the rotating rod 3, the safety buckle 1 is buckled on two railings, and then by rotating the first threaded sleeve 4, the first threaded sleeve 4 is sleeved on the end portions of the rotating rod 3 and the safety buckle 1 to facilitate fixing the connection position between the rotating rod 3 and the safety buckle 1. Then, by rotating the second threaded sleeve 203 forward, the second threaded sleeve 203 moves downward, and the end portion of the second threaded sleeve 203 abuts against the upper railing. Then, by rotating two limit bolts 204 forward, the two limit bolts 204 move into the inside of the connecting rod 201 and abut against the surface of the threaded column 202, facilitating increasing the friction force between the second threaded sleeve 203 and the threaded column 202, thereby improving the stability and preventing loosening caused by vibration.

[0042] Then, the two ends of the first spring 601 are pulled by the second spring 604, enabling the first spring 601 to withstand a greater tensile force. The forces borne by the first spring 601 and the second spring 604 are part of the total tensile force, thereby reducing the risk of a single spring being overloaded. Due to the increased stiffness, its dynamic response speed will also increase. When subjected to an external shock or a rapidly changing external force, the system can return to the equilibrium state more quickly.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0044] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A safety rope fixing device for a wind power blade, characterized in that, It includes a safety buckle (1), one end of the safety buckle (1) is rotatably connected to a rotating rod (3), a first threaded sleeve (4) is threadedly sleeved on the outer wall of the rotating rod (3), and a limiting structure (2) is provided on the inner upper wall of the safety buckle (1); At the center of the lower end face of the safety buckle (1), a first ring (5) is provided, and a buffer structure (6) is provided below the first ring (5).

2. The safety rope fixing device for a wind power blade according to claim 1, wherein, The limiting structure (2) includes a connecting rod (201), a threaded column (202) is fixedly connected to the lower end face of the connecting rod (201), a second threaded sleeve (203) is threadedly sleeved on the lower part of the outer wall of the threaded column (202), and limiting bolts (204) are provided at the upper center of the front and rear end faces of the second threaded sleeve (203), and the two limiting bolts (204) respectively penetrate through the front and rear end faces of the second threaded sleeve (203) and lead to the inner side walls of the front and rear of the second threaded sleeve (203).

3. The safety rope fixing device for a wind power blade according to claim 2, characterized in that, The two limiting bolts (204) are respectively threadedly connected to the second threaded sleeve (203).

4. The safety rope fixing device for a wind power blade according to claim 1, characterized in that, The buffer structure (6) includes a first spring (601), the upper end of the first spring (601) is fixedly connected to a second ring (602), the second ring (602) is sleeved on the first ring (5), and the lower end of the first spring (601) is fixedly connected to a third ring (603).

5. The safety rope fixing device for a wind power blade according to claim 4, characterized in that, A second spring (604) is provided inside the first spring (601), the upper end of the second spring (604) is fixedly connected to a fourth ring (605), the fourth ring (605) is fixedly sleeved on the upper end part of the first spring (601), the lower end of the second spring (604) is fixedly connected to a fifth ring (606), and the fifth ring (606) is fixedly sleeved on the lower end part of the first spring (601).

6. The safety rope fixing device for a wind power blade according to claim 4, characterized in that, The third ring (603) is used to connect the safety rope.

7. The safety rope fixing device for a wind power blade according to claim 4, characterized in that, The second ring (602) is used to connect with the safety buckle (1).

8. A method for fixing a safety rope for a wind power blade, characterized in that, A safety rope fixing device for a wind power blade according to any one of claims 1 to 7 of the method, comprising: By rotating the rotating rod (3), the safety buckle (1) is buckled on two railings. By rotating the first threaded sleeve (4), the first threaded sleeve (4) is sleeved on the ends of the rotating rod (3) and the safety buckle (1) to fix the connection position of the rotating rod (3) and the safety buckle (1). Then, the device is fixed on the railing through the limiting structure (2). Finally, the impact force received by the staff is reduced through the buffer structure (6).

9. A method for fixing a safety rope for a wind power blade according to claim 8, characterized in that, Fixing the device on the railing through the limiting structure (2), including: By rotating the second threaded sleeve (203) forward, the second threaded sleeve (203) moves downward, and the end of the second threaded sleeve (203) abuts against the upper railing. Then, by rotating the two limiting bolts (204) forward, the two limiting bolts (204) move into the connecting rod (201) and abut against the surface of the threaded column (202), which is convenient for increasing the friction between the second threaded sleeve (203) and the threaded column (202).

10. A method for fixing a safety rope for a wind power blade according to claim 8, characterized in that, Reducing the impact force received by the staff through the buffer structure (6), including: The two ends of the first spring (601) are pulled by the second spring (604), enabling the first spring (601) to withstand a greater tensile force. The forces borne by the first spring (601) and the second spring (604) are part of the total tensile force, thereby reducing the risk of a single spring being overloaded.

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