Dual-purpose wind driven generator single-blade lifting appliance for mounting and dismounting

Abstract

The invention discloses a mounting and dismounting dual-purpose wind driven generator single blade lifting appliance which comprises a lifting appliance main structure, hook sets are arranged at the left end and the right end of the lifting appliance main structure respectively, each hook set comprises a first hook device and a second hook device which are distributed front and back, and the first hook device is used for being connected with one end of a lifting belt; the second hook device is used for being connected with the other end of the sling; the blade dismounting beam is arranged corresponding to the hook group, and a sling fixing point is arranged on the blade dismounting beam; when the blade dismounting beam is in a dismounting state, the lifting appliance main structure is not provided with the blade dismounting beam, and the lifting appliance is in a blade mounting mode; and when the blade dismounting beam is in a mounting state, the blade dismounting beam is mounted on the lifting appliance main structure, and the lifting appliance is in a blade dismounting mode. Switching of the lifting appliance between a blade mounting mode and a blade dismounting mode is achieved by mounting or dismounting the blade dismounting beam, so that single-blade mounting operation and single-blade dismounting operation can be well completed, the safety coefficient is high, and the operation efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade hoisting technology, and in particular to a single-blade hoisting tool for wind turbines that can be used for both installation and disassembly. Background Technology

[0002] Commonly used single-blade lifting tools are often only capable of installing blades and cannot perform blade disassembly when blades are damaged. Existing blade disassembly operations often require personnel to work at heights and two cranes to operate simultaneously, which is risky and inefficient.

[0003] Therefore, there is an urgent need for a wind turbine single-blade lifting tool that can have both installation and disassembly modes, and can achieve blade installation and disassembly by switching between different modes. Summary of the Invention

[0004] In order to solve the problems in the prior art, the present invention provides a single-blade lifting tool for wind turbines that can be used for both installation and disassembly.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A dual-purpose wind turbine blade lifting device for installation and disassembly includes a main lifting device structure. Hook groups are provided at the left and right ends of the main lifting device structure. Each hook group includes a first hook device and a second hook device distributed front and rear. The first hook device is used to connect to one end of the sling, and the second hook device is used to connect to the other end of the sling. The first hook device includes a first lifting device connecting mechanism, a first lifting mechanism and a first sling connecting mechanism connected in sequence from top to bottom. The first lifting device connecting mechanism is connected to the main structure of the lifting device. The first sling connecting mechanism is raised and lowered through the first lifting mechanism. One end of the sling has a first connecting hole or a first connecting ring. The first sling connecting mechanism is detachably connected to the first connecting hole or the first connecting ring. The second hook device includes a second lifting device connecting mechanism, a second lifting mechanism, and a second sling connecting mechanism connected in sequence from top to bottom. The second lifting device connecting mechanism is connected to the main structure of the lifting device, and the second sling connecting mechanism is raised and lowered through the second lifting mechanism. The other end of the sling has a second connecting ring. The second sling connecting mechanism is an automatic connecting mechanism, and the second sling connecting mechanism and the second connecting ring are detachably and automatically connected. It also includes blade disassembly beams arranged corresponding to the hook assembly, and the blade disassembly beams have disassembly and installation states; When the blade disassembly beam is in the disassembly state, the blade disassembly beam is not installed on the main structure of the lifting device. At this time, the lifting device is in blade installation mode. When the blade dismantling beam is in the installation state, the blade dismantling beam is installed on the main structure of the lifting device, and the lifting device is in blade dismantling mode at this time. When the blade disassembly beams are in the installation state, the two blade disassembly beams are installed at the left and right ends of the main structure of the lifting device. The blade disassembly beams include horizontal beams and connecting beams. The horizontal beams extend in the front-to-back direction and are detachably and fixedly connected to the main structure of the lifting device through the connecting beams. The horizontal beams are provided with sling fixing points at positions corresponding to the upper and lower positions of the second hook device. The second connecting ring is placed at the sling fixing points. When the second connecting ring is placed at the sling fixing points, the second connecting ring is in a vertical state and the upper part of the second connecting ring protrudes from the horizontal beam.

[0006] Preferably, the first lifting device connection mechanism is a first lifting plate, and a plurality of first mounting holes arranged in the front-to-back direction are provided at the corresponding position on the lower side of the main structure of the lifting device. The upper end of the first lifting plate is connected to the first mounting holes through a first pin. The second lifting device connection mechanism is a second lifting plate. Multiple second mounting holes are arranged in the front-to-back direction at the corresponding position on the lower side of the main structure of the lifting device. The upper end of the second lifting plate is connected to the second mounting holes through a second pin.

[0007] Preferably, the first lifting mechanism is a first chain hoist; the second lifting mechanism is a second chain hoist.

[0008] Preferably, the first sling connection mechanism is an electric pin threader, including a frame, an electric push rod, and a pin shaft. The frame is connected to the first lifting mechanism, the pin shaft is mounted on the frame and slides and guides it, and the moving end of the electric push rod is connected to the pin shaft. The extension and retraction of the electric push rod drives the pin shaft to move, thereby achieving connection or opening with the first connecting hole or the first connecting ring.

[0009] Preferably, the electric actuator is controlled by a remote control.

[0010] Preferably, the second sling connection mechanism is a one-way automatic hook, including a base, the upper end of which is connected to the second lifting mechanism, and the lower end of the base is provided with an opening, with locking plates rotatably connected to both sides of the opening; the outer sides of the two locking plates are respectively connected to the base through return springs, and the inner sides of the two locking plates abut against each other to realize one-way inward opening.

[0011] Preferably, multiple sling fixing points are arranged along the front-to-back direction on the horizontal beam.

[0012] Preferably, the sling fixing point is a vertical groove that mates with the second connecting ring. The second connecting ring can be placed vertically in the vertical groove, with the upper part of the second connecting ring protruding from the horizontal beam.

[0013] Preferably, the connecting beam extends in the vertical direction, the upper end of the connecting beam is detachably and fixedly connected to the main structure of the lifting device, and the lower end of the connecting beam is fixedly connected to the horizontal beam.

[0014] Preferably, the connection between the connecting beam and the main structure of the lifting device is a flange connection, a pin connection, or a bolt connection.

[0015] The beneficial effects of this invention are: This invention enables the lifting device to switch between blade installation and blade disassembly modes by installing or disassembling the blade disassembly beam and cooperating with the first and second hook devices. This allows for the successful completion of single-blade installation and disassembly operations with a high safety factor and high work efficiency.

[0016] When performing blade dismantling operations, the lifting device of this invention eliminates the need for personnel to work at heights and also eliminates the need for two cranes to operate simultaneously as in existing blade dismantling methods, thus effectively solving these two dangerous points. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention in blade mounting mode; Figure 2 yes Figure 1 Side view; Figure 3 This is a schematic diagram of the present invention in blade disassembly mode; Figure 4 yes Figure 3 Side view; Figure 5 This is a schematic diagram of the first sling connection mechanism in this invention; Figure 6 This is a schematic diagram of the second sling connection mechanism in this invention; Figure 7 This is an enlarged view of the sling fixing point in this invention; Figure 8 This is a schematic diagram of the second connecting ring in this invention; Figure 9 This is a schematic diagram showing the cooperation between the second sling connection mechanism and the second connecting ring at the sling fixing point in the blade disassembly mode.

[0018] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] like Figures 1 to 9As shown, this embodiment provides a single-blade lifting tool for installing and dismantling a dual-purpose wind turbine, including a main lifting structure 1. Hook groups are provided at the left and right ends of the main lifting structure 1. Each hook group includes a first hook device 3 and a second hook device 4 distributed front and rear. The first hook device 3 is used to connect to one end of the sling, and the second hook device 4 is used to connect to the other end of the sling.

[0021] The first hook device 3 includes a first lifting device connecting mechanism, a first lifting mechanism and a first sling connecting mechanism connected in sequence from top to bottom. The first lifting device connecting mechanism is connected to the main lifting structure 1. The first sling connecting mechanism is raised and lowered through the first lifting mechanism. One end of the sling has a first connecting hole or a first connecting ring. The first sling connecting mechanism is detachably connected to the first connecting hole or the first connecting ring.

[0022] In this embodiment, the first lifting device connection mechanism is a first lifting plate 6. Multiple first mounting holes arranged in a front-to-back direction are provided at corresponding positions on the lower side of the main lifting device structure 1. The upper end of the first lifting plate 6 is connected to the first mounting holes via a first pin. This allows for the installation and removal of different blades by connecting to different holes on the main lifting device structure 1.

[0023] In this embodiment, the first lifting mechanism is the first chain hoist 7.

[0024] In this embodiment, the first sling connection mechanism is an electric pin threader 8. The electric pin threader 8 includes a frame 81, an electric push rod 82, and a pin shaft 83. The frame 81 is connected to the first chain hoist 7. The pin shaft 83 is mounted on the frame 81 and slides in a guide engagement with it. The moving end of the electric push rod 82 is connected to the pin shaft 83. The electric push rod 82 is controlled by a remote control to extend and retract, thereby moving the pin shaft 83 to connect or open with the first connecting hole or the first connecting ring. After the blades are installed, the electric pin threader 8 can be remotely controlled to release the sling.

[0025] The second hook device 4 includes a second lifting device connecting mechanism, a second lifting mechanism, and a second sling connecting mechanism connected in sequence from top to bottom. The second lifting device connecting mechanism is connected to the main lifting structure 1. The second sling connecting mechanism is raised and lowered through the second lifting mechanism. The other end of the sling has a second connecting ring 13. The second sling connecting mechanism is an automatic connecting mechanism. The second sling connecting mechanism and the second connecting ring 13 are detachably and automatically connected.

[0026] In this embodiment, the second lifting device connection mechanism is the second lifting plate 9. The corresponding position on the lower side of the main structure of the lifting device is provided with a plurality of second mounting holes arranged in the front-to-back direction. The upper end of the second lifting plate 9 is connected to the second mounting holes through a second pin.

[0027] In this embodiment, the second lifting mechanism is the second chain hoist 10.

[0028] In this embodiment, the second sling connection mechanism is a one-way automatic hook 11. The one-way automatic hook 11 includes a base 111, the upper end of which is connected to the second chain hoist 10. The lower end of the base 111 has an opening, and locking plates 112 are rotatably connected to both sides of the opening. The outer sides of the two locking plates 112 are connected to the base 111 via return springs 113, and the inner sides of the two locking plates 112 abut against each other, achieving one-way inward opening. The one-way automatic hook 11 allows for the hanging of slings at heights without manual operation.

[0029] The single-blade lifting tool for wind turbines that can be used for both installation and disassembly in this embodiment also includes blade disassembly beams 2 arranged in a one-to-one correspondence with the hook groups. The blade disassembly beams 2 have disassembly and installation states.

[0030] When the blade disassembly beam 2 is in the disassembly state, the blade disassembly beam 2 is not installed on the main structure 1 of the lifting device. At this time, the lifting device is in blade installation mode.

[0031] The specific operational process for the blade installation mode (corresponding to the blade installation process from the ground to the high-altitude hub) is as follows: After the blade is transported to the designated location, the lifting device of the present invention is lifted by a crane and moved above the blade. The first hook device 3 and the second hook device 4 are lowered to the ground by the first chain hoist 7 and the second chain hoist 10, respectively hooking the two ends of the lifting strap (this step can be done manually). Then the first chain hoist 7 and the second chain hoist 10 are lifted until the lifting strap catches the blade.

[0032] When the blade dismantling beam 2 is in the installation state, the blade dismantling beam 2 is installed on the main structure 1 of the lifting device, and the lifting device is in blade dismantling mode at this time.

[0033] When in the installed state, the two blade disassembly beams 2 are installed at the left and right ends of the main structure 1 of the lifting device. The blade disassembly beam includes a horizontal beam and a connecting beam. The connecting beam extends in the vertical direction. The upper end of the connecting beam is detachably and fixedly connected to the main structure 1 of the lifting device, and the lower end of the connecting beam is fixedly connected to the horizontal beam. The connection method between the connecting beam and the main structure of the lifting device includes, but is not limited to, flange connection, pin connection, or bolt connection.

[0034] The horizontal beam extends in the front-to-back direction. The horizontal beam is provided with sling fixing points 12 at positions corresponding to the second hook device above and below. The second connecting ring 13 is placed at the sling fixing point 12. When the second connecting ring 13 is placed at the sling fixing point 12, the second connecting ring 13 is in a vertical state, and the upper part of the second connecting ring 13 is exposed above the horizontal beam.

[0035] In this embodiment, the sling fixing point 12 is a vertical groove that cooperates with the second connecting ring 13. The second connecting ring 13 can be placed vertically in the vertical groove, and the upper part of the second connecting ring 13 is exposed above the horizontal beam.

[0036] In this embodiment, multiple sling fixing points 12 on the horizontal beam are arranged in the front-to-back direction to accommodate the installation and disassembly of different blades.

[0037] The specific operational process of the blade disassembly mode (corresponding to the process of disassembling the blade from the high-altitude hub to the ground) is as follows: When the lifting device is on the ground, prepare for the following: (1) Lower the chain hoist and attach the first connecting hole or the first connecting ring at one end of the sling to the electric pin 8 in the first hook device 3; (2) Place the second connecting ring 13 at the other end of the sling on the sling fixing point 12 on the blade disassembly beam 2.

[0038] After the preparation work is completed, the crane moves the lifting device of the present invention to the "blade to be disassembled". The second chain hoist 10 lowers the one-way automatic hook device 11. When the one-way automatic hook device 11 is lowered to the corresponding sling fixing point 12, the two locking plates 112 are opened under the action of the weight. After the locking plates 112 hook the second connecting ring 13 of the sling, they are automatically closed by the return spring 113. Then the first chain hoist 7 and the second chain hoist 10 are raised until the sling catches the blade.

[0039] The lifting device of this invention has a blade installation mode and a blade dismantling mode. The switching between the two modes depends on whether a blade dismantling beam is installed. The blade dismantling beam serves to hold the lifting slings during blade dismantling operations. With the application of this invention, blade dismantling eliminates the need for personnel to work at height and also eliminates the need for two cranes to operate simultaneously as in existing blade dismantling methods.

[0040] This invention can effectively complete single-blade installation and disassembly operations with a high safety factor and high work efficiency.

[0041] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

[0042] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A single-blade lifting device for both installation and disassembly of a wind turbine, comprising a main lifting device structure, characterized in that: The main structure of the lifting device is provided with hook groups at both the left and right ends. Each hook group includes a first hook device and a second hook device distributed in front and behind. The first hook device is used to connect to one end of the sling, and the second hook device is used to connect to the other end of the sling. The first hook device includes a first lifting device connecting mechanism, a first lifting mechanism and a first sling connecting mechanism connected in sequence from top to bottom. The first lifting device connecting mechanism is connected to the main structure of the lifting device. The first sling connecting mechanism is raised and lowered through the first lifting mechanism. One end of the sling has a first connecting hole or a first connecting ring. The first sling connecting mechanism is detachably connected to the first connecting hole or the first connecting ring. The second hook device includes a second lifting device connecting mechanism, a second lifting mechanism, and a second sling connecting mechanism connected in sequence from top to bottom. The second lifting device connecting mechanism is connected to the main structure of the lifting device, and the second sling connecting mechanism is raised and lowered through the second lifting mechanism. The other end of the sling has a second connecting ring. The second sling connecting mechanism is an automatic connecting mechanism, and the second sling connecting mechanism and the second connecting ring are detachably and automatically connected. It also includes blade disassembly beams arranged corresponding to the hook assembly, and the blade disassembly beams have disassembly and installation states; When the blade disassembly beam is in the disassembly state, the blade disassembly beam is not installed on the main structure of the lifting device. At this time, the lifting device is in blade installation mode. When the blade dismantling beam is in the installation state, the blade dismantling beam is installed on the main structure of the lifting device, and the lifting device is in blade dismantling mode at this time. When the blade disassembly beams are in the installation state, the two blade disassembly beams are installed at the left and right ends of the main structure of the lifting device. The blade disassembly beams include horizontal beams and connecting beams. The horizontal beams extend in the front-to-back direction and are detachably and fixedly connected to the main structure of the lifting device through the connecting beams. The horizontal beams are provided with sling fixing points at positions corresponding to the upper and lower positions of the second hook device. The second connecting ring is placed at the sling fixing points. When the second connecting ring is placed at the sling fixing points, the second connecting ring is in a vertical state and the upper part of the second connecting ring protrudes from the horizontal beam.

2. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 1, characterized in that: The first lifting device connection mechanism is a first lifting plate. Multiple first mounting holes are arranged in the front-to-back direction at corresponding positions on the lower side of the main structure of the lifting device. The upper end of the first lifting plate is connected to the first mounting holes through a first pin. The second lifting device connection mechanism is a second lifting plate. Multiple second mounting holes are arranged in the front-to-back direction at the corresponding position on the lower side of the main structure of the lifting device. The upper end of the second lifting plate is connected to the second mounting holes through a second pin.

3. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 1, characterized in that: The first lifting mechanism is a first chain hoist; the second lifting mechanism is a second chain hoist.

4. The single-blade lifting device for installing and dismantling a dual-purpose wind turbine generator according to any one of claims 1-3, characterized in that: The first sling connection mechanism is an electric pin threader, which includes a frame, an electric push rod, and a pin shaft. The frame is connected to the first lifting mechanism, the pin shaft is mounted on the frame and slides and guides it, and the moving end of the electric push rod is connected to the pin shaft. The extension and retraction of the electric push rod drives the pin shaft to move, thereby achieving connection or opening with the first connecting hole or the first connecting ring.

5. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 4, characterized in that: The electric actuator is controlled by a remote control.

6. The single-blade lifting device for installing and dismantling a dual-purpose wind turbine generator according to any one of claims 1-3, characterized in that: The second sling connection mechanism is a one-way automatic hook, including a base. The upper end of the base is connected to the second lifting mechanism, and the lower end of the base has an opening. Locking plates are rotatably connected to both sides of the opening. The outer sides of the two locking plates are connected to the base through return springs, and the inner sides of the two locking plates abut against each other to achieve one-way inward opening.

7. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 1, characterized in that: Multiple sling fixing points are arranged along the front-to-back direction on the horizontal beam.

8. The single-blade lifting device for installing and dismantling a dual-purpose wind turbine generator according to claim 1 or 7, characterized in that: The sling fixing point is a vertical groove that mates with the second connecting ring. The second connecting ring can be placed vertically in the vertical groove, with the upper part of the second connecting ring exposed above the horizontal beam.

9. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 1, characterized in that: The connecting beam extends in the vertical direction, with its upper end detachably and fixedly connected to the main structure of the lifting device, and its lower end fixedly connected to the horizontal beam.

10. The single-blade lifting tool for installing and dismantling a dual-purpose wind turbine generator according to claim 9, characterized in that: The connecting beam is connected to the main structure of the lifting device by a flange, pin, or bolt.

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