Turnover tooling and method of use thereof

Abstract

This application relates to the field of wind power equipment maintenance technology, and discloses a tilting fixture and its usage method. The tilting fixture includes a base and a tilting frame. The base is used for installation on a nacelle located in the air. The tilting frame is rotatably connected to the base and can change between a suspended state and a locked state. When the tilting frame is in the suspended state, one side of the tilting frame is away from the base, and the other side of the tilting frame faces the ground; when the tilting frame is in the locked state, one side of the tilting frame is close to the base and connected to the base. The tilting fixture and its usage method provided by this application can facilitate the installation of lifting equipment.

Description

Technical Field

[0001] This application relates to the field of wind power equipment maintenance technology, and in particular to a flipping tool and its usage method. Background Technology

[0002] With the continuous development of new energy technologies, the proportion of wind power generation is also constantly increasing. Wind power generation utilizes the widely flowing wind in nature to generate electricity. The wind drives the blades and rotor of the wind turbine to rotate, thereby converting wind energy into electrical energy. Since no pollutants are produced during the power generation process, it is relatively environmentally friendly and is an important source of electricity among new energy sources.

[0003] Wind turbines are typically installed at a certain altitude to generate electricity, enabling them to capture wind energy from optimal locations. With the trend towards larger and longer blades in wind turbines, lifting equipment is often installed on the nacelle for easy component replacement. Therefore, facilitating the installation of this lifting equipment is a crucial issue. Summary of the Invention

[0004] The purpose of this application is to provide a flipping fixture and its usage method, which can facilitate the installation of lifting equipment.

[0005] To address the aforementioned technical problems, embodiments of this application provide a flipping fixture. The flipping fixture includes a base and a flipping frame. The base is used for mounting on an aircraft cabin located in the air. The flipping frame is rotatably connected to the base and can change between a suspended state and a locked state. When the flipping frame is in the suspended state, one side of the flipping frame is away from the base, and the other side faces the ground; when the flipping frame is in the locked state, one side of the flipping frame is close to the base and connected to the base.

[0006] The embodiments of this application also provide a method for using the flipping fixture, the method of using the flipping fixture includes: Install the base onto the cabin located in the air, and keep the tilting frame suspended in the air; Lift the column of the lifting equipment and connect the bottom end of the column to the tilting frame; The drive mechanism rotates the tilting frame, causing the side of the tilting frame away from the column to approach the base and connect with the base, thus bringing the column into an upright position.

[0007] The tilting fixture and its usage method provided in this application utilize a base to form a connecting foundation and a stable support platform. The tilting frame can rotate relative to the base, adjusting the posture of the column of the tower crane connected to the tilting frame, changing the column from an inverted posture during lifting to an upright posture for normal use. The tilting fixture facilitates the installation of the column, realizes posture tilting during the column hoisting process, and provides an installation platform for the column, successfully completing the installation of the most critical column part of the tower crane, thus facilitating the use of the tower crane.

[0008] In some embodiments, the flipping fixture also includes a support frame, which is rotatably connected to the base. The support frame can change between an extended state and a retracted state. When the support frame is in the extended state, one end of the support frame protrudes from one side of the base and applies a pulling force to the flipping frame, which is in a suspended state. When the support frame is in the retracted state, the support frame is located on one side of the flipping frame, which is in a locked state.

[0009] In some embodiments, when the support frame is in the unfolded state, a first limiting member is provided between the support frame and the base, and a second limiting member is provided between the support frame and the tilting frame in the suspended state. The second limiting member is located on the side of the support frame away from the first limiting member.

[0010] In some embodiments, the tilting frame is provided with a guide structure, and when the support frame is in the unfolded state, the support frame is provided with a third limiting member that passes through the guide structure. The third limiting member is located on the side of the second limiting member away from the support frame.

[0011] In some embodiments, the base is provided with a rotatable drive unit, the output end of which is detachably connected to the tilting frame and can drive the tilting frame to rotate relative to the base.

[0012] In some embodiments, the base is provided with a limiting part, and the tilting frame is provided with a first docking part. When the tilting frame is in a locked state, the first docking part is connected to the limiting part.

[0013] In some embodiments, the tilting frame is provided with a second docking portion, which is located on a different side of the tilting frame from the first docking portion.

[0014] In some embodiments, the base and the tilting frame are provided with pulley systems, which include multiple pulleys for turning the rope system.

[0015] In some embodiments, the base includes a first part and a second part arranged symmetrically, the first part and the second part being detachably connected, and the flipping frame being rotatably connected to the second part. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a schematic diagram of the structure of the flipping fixture provided in some embodiments of this application when the flipping frame is in a suspended state during use; Figure 2 This is an enlarged structural schematic diagram of the flipping fixture provided in some embodiments of this application when the flipping frame is in a suspended state during use; Figure 3 This is a schematic diagram of the structure of the flipping fixture provided in some embodiments of this application before the flipping frame is flipped. Figure 4 This is an enlarged structural diagram of the flipping fixture provided in some embodiments of this application before the flipping frame is flipped. Figure 5 This is a schematic diagram of the structure of the flipping fixture provided in some embodiments of this application when the flipping frame is flipped. Figure 6 This is a schematic diagram of the structure of the flipping fixture after it has been flipped when used in some embodiments of this application; Figure 7 This is a flowchart illustrating the usage method of the flipping fixture provided in some embodiments of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0021] As wind power equipment ages, major components such as blades, gearboxes, pitch bearings, and generators require replacement. Currently, due to limitations such as tower height and the weight of these components, large truck cranes or crawler cranes are typically used for replacing large parts in wind turbines. The use of such large equipment inevitably incurs high lifting costs. Therefore, tower cranes that can be installed on the nacelle of wind turbines have begun to be used.

[0022] Taking wind turbine blade replacement as an example, besides the conventional method of using a large ground crane, another method is to use tower hoisting equipment. Tower hoisting equipment can be installed on the nacelle of the wind turbine to lift and transfer the blades and related components. Furthermore, tower hoisting equipment can be equipped with an auxiliary lifting mechanism. After the foundation column is installed on the nacelle, the auxiliary lifting mechanism lifts other components, thus forming a complete tower lifting system for lifting and transferring large components such as blades.

[0023] Since tower cranes need to be installed in the nacelle during use, a tilting mechanism is required to smoothly install the tower cranes into the nacelle. This mechanism allows the column of the tower crane in the air to be tilted so that it can be fixed to the nacelle after its posture is adjusted, and then other components can be hoisted.

[0024] To this end, some embodiments of this application provide a flipping fixture with a flipping frame. The flipping frame can rotate after being connected to the column portion of the tower crane, thereby flipping the column portion, which is installed in an inverted position onto the flipping frame, to an upright position. Furthermore, after the column portion has been fully adjusted in its position, it can be locked to the nacelle located in the air via the flipping frame, thereby enabling the installation of the foundation portion of the tower crane.

[0025] The following is combined Figures 1 to 6 This application describes the structure of a flipping fixture provided in some embodiments.

[0026] like Figures 1 to 6As shown, some embodiments of this application provide a flipping fixture including a base 11 and a flipping frame 12. The base 11 is used for mounting on a cabin 21 located in the air. The flipping frame 12 is rotatably connected to the base 11 and can change between a suspended state and a locked state. When the flipping frame 12 is in the suspended state, one side of the flipping frame 12 is away from the base 11, and the other side of the flipping frame 12 faces the ground; when the flipping frame 12 is in the locked state, one side of the flipping frame 12 is close to the base 11 and connected to the base 11.

[0027] The base 11 serves as the foundation for connecting the tilting fixture to the interface on the nacelle 21, and also as the mounting base for other components. The bottom of the base 11 has legs 1101 forming a support platform. These legs 1101 can mate with pre-drilled interfaces on the nacelle 21 located at the top of the tower 22, thus securing the base stably to the nacelle 21. In practice, the simple structure of the legs 1101, the extension legs 1102, and the base 1103 working together to form a support platform effectively controls the weight of the base 11. Furthermore, reinforcing ribs and other structures can be added to ensure the structural strength of the base 11, providing a lightweight yet stable mounting foundation for the tower crane.

[0028] The tilting frame 12 is rotatably connected to the base 11, allowing the tilting frame 12 to change positions relative to the base 11. When the tilting frame 12 is suspended, the rope used by the winch 100 to hoist the column 31 can reach the tilting frame 12 from the ground, bypass the tilting frame 12, and return to the ground to connect with the column 31, thus lifting the column 31. When the column 31 is lifted to the position of the tilting frame 12, the column 31 and the tilting frame 12 can be connected together to form a whole. Then, the tilting frame 12 can be rotated to adjust the attitude of the column 31. When the tilting frame 12 is locked, the side of the tilting frame 12 away from the column 31 is connected to the base 11, and the column 31 is fixed to the base 11 via the tilting frame 12, thereby being installed into the cabin 21 using the tilting fixture. In practice, the rotation of the tilting frame 12 can be driven by an independent drive unit 17 installed on the base 11, or by a winch 100 or similar device on the ground.

[0029] When the tilting frame 12 is in the locked state, it can be stacked on the base 11. Support beams can be installed on the base 11, and the crossbeams of the tilting frame 12 can abut against the support beams on the base 11. The overlapping of the crossbeams and support beams can ensure the contact area, thereby ensuring the support effect.

[0030] The tilting fixture utilizes the base 11 to form a connecting foundation and a stable support platform. The tilting frame 12 can rotate relative to the base 11, adjusting the posture of the column 31 of the tower crane connected to the tilting frame 12, changing the column 31 from an inverted posture during lifting to an upright posture for normal use. The tilting fixture facilitates the installation of the column 31, enabling posture tilting during the lifting process and providing an installation platform for the column 31, thus successfully completing the installation of the most critical part of the tower crane, the column 31, and facilitating the use of the tower crane.

[0031] After the tower crane is successfully installed on the base 11, the replacement of large components such as blades and gearboxes can be carried out using the lifting mechanism on the boom. Since the crane can be installed at a height of nearly or more than 100 meters, the problems of transportation inconvenience and poor compatibility caused by using ground-based cranes can be avoided.

[0032] like Figures 1 to 5 As shown, the flipping fixture may also include a support frame 13, which is rotatably connected to the base 11. The support frame 13 can change between an unfolded state and a retracted state. When the support frame 13 is in the unfolded state, one end of the support frame 13 protrudes from one side of the base 11 and applies a pulling force to the flipping frame 12, which is in a suspended state. When the support frame 13 is in the retracted state, the support frame 13 is located on one side of the flipping frame 12, which is in a locked state.

[0033] The support frame 13 can limit the tilting frame 12 and share the load during the rotation of the tilting frame 12. Figures 1 to 5 The structure of the support frame 13 in its deployed state is shown. In this state, the support frame 13 is located to the left of the tilting frame 12 and is connected to it. A pulling force is applied to the tilting frame 12 to ensure its stable position and to limit its rotational limits. Simultaneously, when the tilting frame 12 rotates under the action of the winch 100, the support frame 13 provides a fixed pull point (i.e., a fulcrum) for the winch 100's rope system. The support frame 13 can be connected to the movable hook 32 on the column 31 via a tilting rope, allowing the winch 100 to pull the hook 32, thus achieving the tilting of the column 31.

[0034] In addition, when the support frame 13 is in the unfolded state, a first limiting member 14 may be provided between the support frame 13 and the base 11, and a second limiting member 15 may be provided between the support frame 13 and the tilting frame 12 in the suspended state. The second limiting member 15 is located on the side of the support frame 13 away from the first limiting member 14.

[0035] The first limiting member 14 and the second limiting member 15 can make the base 11, the support frame 13 and the flipping frame 12 cooperate with each other, and fix the position of the support frame 13 and the flipping frame 12 by using the connecting effect of the different limiting members.

[0036] like Figures 1 to 5 As shown, ropes, such as steel wire ropes, can be used to form limiting components. The first steel wire rope is used to pull the top of the support frame 13 to position the support frame 13, and the second steel wire rope is used to pull the tilting frame 12 to limit the tilting frame 12. The ropes form a connection without hindering the rotation of the support frame 13 and the tilting frame 12.

[0037] When adjusting the posture of the column 31, the top of the support frame 13 can be used as a fulcrum to lift the column 31, causing it to flip. Simultaneously, the flipping frame 12 rotates with the column 31. At this time, the second steel wire rope changes from a straight state to a bent state and can be disassembled. After the flipping frame 12 rotates close to the support frame 13, the drive component 17 controls the flipping frame 12 to rotate further. At the same time, the support frame 13 and the flipping frame 12 are connected by a connecting rod, and they rotate synchronously towards the base 11. During the rotation of the support frame 13, the first steel wire rope changes from a straight state to a flat state and can be disassembled. When the support frame 13 and the flipping frame 12 rotate to a horizontal state, the column 31 also flips from an inverted posture to an upright posture.

[0038] After the tilting frame 12 is rotated into position, the support frame 13 can be stored inside the base 11, and the tilting frame 12 is connected and fixed to the base 11, so that the column 31 is kept in a vertical position with the top facing upward. After the column 31 is installed, the lifting of the boom, counterweight boom, main lifting system and counterweight system in the tower crane can continue with the help of the auxiliary lifting system equipped on the column 31 and the winch 100 on the ground.

[0039] In some embodiments, the flip frame 12 may be provided with a guide structure 121. When the support frame 13 is in the unfolded state, the support frame 13 is provided with a third limiting member 16 passing through the guide structure 121. The third limiting member 16 is located on the side of the second limiting member 15 away from the support frame 13.

[0040] In other words, a third limiting member 16 can be set on the support frame 13 as the basis for lifting and rotating the column 31. The third limiting member 16 can also be formed by steel wire rope. One end of the third limiting member 16 is bound to the top of the support frame 13, and the other end of the third limiting member 16 is connected to the hook 32 on the column 31 after passing through the guide structure 121 of the rotating frame 12. Continue to control the winch 100 on the ground to apply a pulling force to the hook 32 of the column 31. At this time, the column 31, which is at the bottom, begins to rotate upward until the column 31, which is at the top, rotates to a position close to the support frame 13.

[0041] The guide structure 121 uses a rotatable guide wheel, which is located at the free end of the tilting frame 12, away from the hinged end that is rotatably connected to the base 11. The third steel wire rope connected to the top of the support frame 13 can be connected to the hook 32 on the column 31 after passing through the guide wheel, thereby achieving the tilting of the column 31 by the action of the ground winch 100.

[0042] like Figure 3 and Figure 4 As shown, the column 31 is connected to the tilting frame 12. After passing the end of the tilting frame 12 away from the base 11, the third limiting member 16 connects to the hook 32 provided on the column 31. After the winch 100 on the ground tilts the column 31, the tilting frame 12 reaches a position close to the support frame 13. At this time, the hook 32 on the column 31 moves away from the bottom of the column 31, and one end of the third limiting member 16 also moves away from the bottom of the column 31 along with the hook 32.

[0043] In addition, the base 11 may be provided with a rotatable drive unit 17. The output end of the drive unit 17 is detachably connected to the flipping frame 12 and can drive the flipping frame 12 to rotate relative to the base 11.

[0044] The drive component 17 can cooperate with the tilting frame 12. The drive component 17 drives the tilting frame 12 to rotate, so that the tilting frame 12 rotates completely to a state close to the base 11, so that the column 31 is completely upright after the posture is adjusted. The drive component 17 can be a component with a driving function, such as a cylinder or hydraulic cylinder, and the tilting frame 12 is rotated by the retraction or extension of the output end.

[0045] like Figure 5 As shown, the fixed part of the drive member 17 is hinged to the top of the base 11, and the output end formed by the movable part of the drive member 17 can be hinged to the tilting frame 12. When the drive member 17 is working, the tilting frame 12 can be retracted by retracting the output end, thereby retracting the tilting frame 12 by using the linear movement of the movable part relative to the fixed part, so as to realize the complete tilting of the column 31. Figure 6 The top is shown as the vertical orientation.

[0046] In some embodiments, the base 11 may be provided with a limiting part, and the flipping frame 12 is provided with a first docking part 122. When the flipping frame 12 is in a locked state, the first docking part 122 is connected to the limiting part.

[0047] The limiting part provides a connection base for the tilting frame 12. The limiting part and the first mating part 122 of the tilting frame 12 can be fixed by means of shaft hole fit, fastener locking, or snap-on groove. After the first mating part 122 and the limiting part are connected, the tilting frame 12 can be fixed on the base 11, so that the position of the tilting frame 12 remains unchanged, and the tower crane installed above the tilting frame 12 can also carry out lifting operations normally.

[0048] In practice, limiting parts can be provided on the front and rear sides of the base 11, with limiting holes provided on the limiting parts. First docking parts 122 can be provided on the front and rear sides of the flipping frame 12, with first docking holes provided on the first docking parts 122. After the first docking holes are aligned with the limiting holes, they can be locked using pins.

[0049] In addition, the tilting frame 12 may be provided with a second docking part 123, which is located on a different side of the tilting frame 12 than the first docking part 122.

[0050] The second docking part 123 is used to connect and fix with the column 31. The second docking part 123 and the second docking part 122 are separately arranged on opposite sides of the flipping frame 12. The second docking part 122 can be connected to the mounting part located at the bottom of the column 31 during normal use, thereby locking the column 31 and the flipping frame 12 together.

[0051] In practice, a second docking part 123 can be provided on the front and rear sides of the tilting frame 12, with a second docking hole in the second docking part 123. An mounting part can be provided on the front and rear sides of the column 31, with a mounting hole in the mounting part. After the mounting hole is aligned with the second docking hole, it can be locked using a pin.

[0052] The base 11 can also be equipped with a hydraulic pin mechanism 113. After the column 31 is completely flipped to a vertical position with the top facing upward, the hydraulic pin mechanism 113 locks the corner plate 311 at the bottom of the column 31, thereby effectively fixing the position of the column 31.

[0053] In some embodiments, the base 11 and the tilting frame 12 may be provided with a pulley system, which includes a plurality of pulleys 18 for turning the rope system.

[0054] The pulley block includes multiple pulleys 18, each of which is rotatable and has a groove for the rope to pass through. The rope can be turned by passing through the groove around the pulley 18.

[0055] like Figures 1 to 4 As shown, symmetrical pulley systems are provided on the front and rear sides of the base 11 and the tilting frame 12, corresponding to the two winches 100 on the ground. The traction rope 110 of the winch 100 can pass through multiple pulleys 18 in sequence to ensure that it can reach the interior of the column 31. This allows the rope of the winch 100 on the ground to pass through the base 11 and the tilting frame 12, enter the interior of the column 31, and connect to the rope system on the pulley connected to the hook 32 after turning inside the column 31. The pulley system facilitates the rope arrangement of the ground winch 100, which is beneficial for controlling the tilting of the column 31 through the ground winch 100, thereby achieving the attitude adjustment of the column 31.

[0056] In some embodiments, the base 11 may include a first part 111 and a second part 112 arranged symmetrically, the first part 111 and the second part 112 being detachably connected, and the flipping frame 12 being rotatably connected to the second part 112.

[0057] In other words, the base 11 can be formed using a modular structure, with the different parts being able to connect together to form a complete support platform. By using a modular structure for the base 11, the difficulty of assembling the interfaces between the base 11 and the cabin 21 can be reduced. During the installation of the base 11, the first part 111 and the second part 112 can be installed sequentially, and then the first part 111 and the second part 112 can be connected together to form the complete base 11.

[0058] like Figure 4 As shown, the support frame 13 may include a first support arm 131 and a second support arm 132 arranged opposite to each other, and a connector 133 connecting the first support arm 131 and the second support arm 132. One end of the first support arm 131 and the second support arm 132 is rotatably connected to the base 11.

[0059] The support frame 13 is formed by extending on both sides and having multiple hollow areas in the middle. The two support arms are combined to ensure the overall structural strength of the support frame 13. The connector 133 can connect different support arms to form a whole while saving material and achieving the lightweight of the support frame 13, without affecting the overall structural strength of the support frame 13.

[0060] Some embodiments of this application also provide a method for using the above-mentioned flipping tooling, such as... Figure 7 As shown, the method of using the flipping fixture includes the following steps: Step S110: Install the base onto the cabin located in the air and keep the tilting frame suspended in the air.

[0061] The base serves as the foundation for the tilting fixture and can be connected to the pre-reserved interface on the nacelle to install the tilting fixture onto the nacelle in the air, forming the installation foundation for the column of the tower crane, so that the column can be adjusted from the top-down position during hoisting to the top-up position and stably fixed on the nacelle.

[0062] Step S120: Hoist the column of the lifting equipment and connect the bottom end of the column to the tilting frame.

[0063] The column can be hoisted using a ground winch located next to the wind turbine tower. The ground winch can also be used in conjunction with a truck crane, where the winch's wire rope passes around the tilting frame and extends into the column, connecting to the hook rope on the column. Through the traction of the ground winch, the column is gradually raised to the position of the tilting frame, and the upward-facing bottom of the column is secured to the tilting frame.

[0064] Before the tilting frame is connected to the column, the hoisting winch uses a wire rope to lift the column by passing it around the tilting frame. After the column is lifted to the tilting frame, the column is connected to the tilting frame by a docking pin.

[0065] Step S130: Drive the tilting frame to rotate, so that the side of the tilting frame away from the column approaches the base and connects with the base, thereby driving the column into an upright position.

[0066] After the column is connected to the tilting frame, the tilting rope is installed. After connection, the winch continues to lift, and the column is tilted by the tilting rope. After tilting to a certain angle, the tilting cylinder intervenes to continue tilting, thereby achieving a large-angle tilt.

[0067] In practice, the hoisting winch is positioned on the ground, with the base, tilting frame, support frame, and tilting cylinder sequentially installed inside the nacelle. The base is formed by assembling front legs, rear legs, extension legs, a front base, and a rear base, with all components connected by flange bolts. A first limiting rope connects the support frame to the base, and a second limiting rope connects the support frame to the tilting frame. The tilting frame is installed using a fixed frame. The hoisting winch wire rope is guided by a rope guide mechanism and pulleys on the tilting frame, and the end of the wire rope is fixed to the crane column at the base of the tower. The hoisting winch retracts the rope, lifting the crane column. After the column is lifted to the tilting frame at the top of the tower, the tilting frame and column are connected as a whole by a connecting pin; one end of the tilting rope is fixed to the support frame, and the other end is connected to the hook on the column. As the hoisting winch continues to retract the rope, the tilting rope tightens, and the hook on the crane column moves downwards with the tilting rope. After the hoisting winch winds up the rope to rotate the column to a certain angle, the tilting cylinder on the base is connected to the tilting frame via a pin, and the tilting cylinder continues to rotate. Once rotated to the correct position, the base and column are connected again with a pin.

[0068] The hoisting winch consists of a winch base, winch support, wire rope, drum, power source, and low-speed end braking system. The winch is fixed to the winch support, which is connected to the winch base by pins or flange bolts. Counterweights are placed at both ends of the winch base. The hoisting winch is placed on the ground next to the tower, and the column is raised and lowered via the wire rope and pulleys on the tilting frame.

[0069] Tower cranes based on columns can replace large components of wind turbines without the need for large cranes. The tilting fixture can automatically tilt and form the main load-bearing structure during the replacement and assembly of large wind turbine components. The tilting fixture can be modularly designed to improve road clearance. By increasing the length of the winch wire rope, it can be quickly extended to the maintenance and use of wind turbines at other heights. The tilting fixture can be quickly reused for other wind turbine models by designing front and rear legs adapted to the specific wind turbine model.

[0070] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A flipping tool, characterized in that, include: A base for mounting on an aircraft cabin located in the air; The flipping frame is rotatably connected to the base and can change between a suspended state and a locked state. When the flipping frame is in the suspended state, one side of the flipping frame is away from the base, and the other side of the flipping frame faces the ground. When the flipping frame is in the locked state, one side of the flipping frame is close to the base and connected to the base.

2. The flipping fixture according to claim 1, characterized in that, It also includes a support frame, which is rotatably connected to the base, and the support frame can change between an unfolded state and a retracted state; When the support frame is in the unfolded state, one end of the support frame protrudes from one side of the base and applies a pulling force to the tilting frame in the suspended state. When the support frame is in the stored state, the support frame is located on one side of the flip frame, which is in the locked state.

3. The flipping fixture according to claim 2, characterized in that, When the support frame is in the unfolded state, a first limiting member is provided between the support frame and the base, and a second limiting member is provided between the support frame and the flipping frame in the suspended state. The second limiting member is located on the side of the support frame away from the first limiting member.

4. The flipping fixture according to claim 1, characterized in that, The flipping frame is provided with a guide structure. When the support frame is in the unfolded state, the support frame is provided with a third limiting member that passes through the guide structure. The third limiting member is located on the side of the second limiting member away from the support frame.

5. The flipping fixture according to claim 1, characterized in that, The base is provided with a rotatable drive component, the output end of which is detachably connected to the flipping frame and can drive the flipping frame to rotate relative to the base.

6. The flipping fixture according to claim 1, characterized in that, The base is provided with a limiting part, and the flipping frame is provided with a first docking part. When the flipping frame is in the locked state, the first docking part is connected to the limiting part.

7. The flipping fixture according to claim 6, characterized in that, The flipping frame is provided with a second docking part, which is located on a different side of the flipping frame from the first docking part.

8. The flipping fixture according to claim 1, characterized in that, The base and the tilting frame are equipped with pulley systems, which include multiple pulleys used to turn the rope system.

9. The flipping fixture according to claim 1, characterized in that, The base includes a first part and a second part arranged symmetrically, the first part and the second part are detachably connected, and the flipping frame is rotatably connected to the second part.

10. A method of using the flipping fixture according to any one of claims 1 to 9, characterized in that, include: Install the base onto the cabin located in the air, and keep the tilting frame suspended in the air; The column of the lifting equipment is hoisted and the bottom end of the column is connected to the tilting frame; The rotating frame is driven to rotate, so that the side of the rotating frame away from the column approaches the base and connects with the base, thereby driving the column into an upright position.

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