Single-hook hub turnover lifting appliance and use method

Abstract

The invention relates to a single-hook hub turnover lifting appliance and a using method, the single-hook hub turnover lifting appliance comprises a first connecting seat, a second connecting seat and an arc-shaped connecting seat, one end of the arc-shaped connecting seat is hinged to the first connecting seat, and the other end of the arc-shaped connecting seat is hinged to the second connecting seat; an included angle exists between the connecting line of the first connecting base and the gravity center of the wind power hub and the connecting line of the second connecting base and the gravity center of the wind power hub, a swing arm is rotationally connected to the arc-shaped connecting base, a lifting hole is formed in the end, away from the arc-shaped connecting base, of the swing arm, and a driving structure used for driving the swing arm to rotate is arranged on the arc-shaped connecting base. According to the wind power hub turnover device, the swing arm is driven to rotate through the driving structure, turnover of the wind power hub can be achieved under the gravity effect after the arc-shaped connecting base, the swing arm and the wind power hub are combined, only one external lifting appliance is needed in the whole turnover process, use is easy, and meanwhile the construction cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of fan hub installation, and in particular to a single-hook hub turning hanger and a method of using the same. Background Art

[0002] The wind turbine hub is an important mechanical component, which is mainly used to support the blades of the wind turbine and bear the loads from all directions of wind and impeller rotation. In the process of installing the wind turbine hub, the existing method is to transport the wind turbine hub to the designated location by means of transportation equipment, and then lift the wind turbine hub to the installation position with the help of lifting equipment such as a car crane, and then turn the wind turbine hub over by means of the lifting equipment in conjunction with manual control until the mounting plate of the wind turbine hub corresponds to the mounting interface of the machine base, and then manually connect the wind turbine hub to the machine base, and then remove the lifting equipment to complete the installation of the wind turbine hub.

[0003] In the above-mentioned wind turbine hub lifting and turning over operation, since the wind turbine hub itself is heavy, the industry usually requires the cooperation of at least two hoists, that is, a main hoist is used to connect the outer wall of the wind turbine hub, and an auxiliary hoist is connected to another connection point on the outer wall of the wind turbine hub. The wind turbine hub is then lifted to a high altitude by the main hoist, and after it is aligned with the installation interface of the machine base, the auxiliary hoist is used to cooperate with the main hoist to realize the turning over of the wind turbine hub, so that the installation plate of the wind turbine hub is connected to the installation interface of the machine base.

[0004] However, although the above-mentioned two hoisting devices can stably realize the lifting and turning operation of the wind turbine hub, the use of two hoisting devices means that two cranes are required, which is more troublesome to use and has a high construction cost. In addition, the connection and disassembly process of the hoisting device and the hub is also more troublesome, and there is room for improvement in the overall use. Summary of the invention

[0005] In order to solve the problem that the existing two hoists cooperate to realize the wheel hub lifting and turning operation, the operation is complicated and the construction cost is high, the present application provides a single-hook wheel hub turning hoist and a use method.

[0006] In a first aspect, the present application provides a single-hook hub turning hoist, which adopts the following technical solution: A single-hook hub turning over hoist comprises a first connecting seat and a second connecting seat for connecting a wind turbine hub, and an arc-shaped connecting seat arranged between the first connecting seat and the second connecting seat, one end of the arc-shaped connecting seat is connected to the first connecting seat, and the other end of the arc-shaped connecting seat is connected to the second connecting seat, there is an angle between the line connecting the first connecting seat and the center of gravity of the wind turbine hub and the line connecting the second connecting seat and the center of gravity of the wind turbine hub, a swing arm is rotatably connected to the arc-shaped connecting seat, a lifting hole for connecting a hoist is arranged at one end of the swing arm away from the arc-shaped connecting seat, and a driving structure for driving the swing arm to rotate is arranged on the arc-shaped connecting seat.

[0007] By adopting the above technical scheme, when in use, the arc-shaped connecting seat, the first connecting seat, the second connecting seat and the wind turbine hub to be turned over are installed together, and after the external hoist is connected to the lifting hole, the arc-shaped connecting seat and the wind turbine hub are first separated from the ground as a whole by the external hoist, that is, space is left for the wind turbine hub to rotate and turn over, and then the swing arm is driven to rotate by the driving structure. During the rotation of the swing arm, under the action of the wind turbine hub's own gravity, the wind turbine hub and the arc-shaped connecting seat rotate synchronously as a whole, so that the lifting hole, the hanging point of the external hoist, and the center of gravity of the wind turbine hub and the arc-shaped connecting seat as a whole are always located in the same straight line, so that the turning over of the wind turbine hub can be achieved by single hook control, and then the turned-over wind turbine hub is lifted to the corresponding position of the machine base by the external hoist, and then the wind turbine hub can be installed on the machine base by bolts, and finally the first connecting seat and the second connecting seat can be removed from the wind turbine hub. Compared with the operation method of two cranes cooperating to perform high-altitude turning in the prior art, the overall process is simpler, more convenient, safer, and also saves construction costs.

[0008] Preferably, an angle between a line connecting the first connection seat and the center of gravity of the wind turbine hub and a line connecting the second connection seat and the center of gravity of the wind turbine hub is between sixty degrees and ninety degrees.

[0009] By adopting the above technical solution, when in use, the angle between the line connecting the first connecting seat and the center of gravity of the wind turbine hub and the line connecting the second connecting seat and the center of gravity of the wind turbine hub can ensure the stable implementation of the subsequent turning process, thereby ensuring the turning effect of the wind turbine hub and being more conducive to use.

[0010] Preferably, the driving structure includes a hydraulic cylinder arranged on an arc-shaped connecting seat, the cylinder body end of the hydraulic cylinder is hinged at one end of the arc-shaped connecting seat close to the first connecting seat, the piston rod end of the hydraulic cylinder is hinged to the end of the swing arm away from the lifting hole, and the piston rod end of the hydraulic cylinder and the hinge point of the swing arm, the lifting hole, and the rotation point of the swing arm and the arc-shaped connecting seat are distributed in a triangular shape.

[0011] By adopting the above technical solution, when in use, through the setting of the hydraulic cylinder, coordinating the connection position between the hydraulic cylinder and the arc-shaped connecting seat and the swing arm, the purpose of driving the swing arm to rotate can be achieved.

[0012] Preferably, the first connecting seat and the arc-shaped connecting seat are rotatably connected via a first rotating pin, and the second connecting seat and the arc-shaped connecting seat are rotatably connected via a second rotating pin.

[0013] By adopting the above technical solution, when in use, the first connecting seat and the arc-shaped connecting seat are rotationally connected, and the second connecting seat and the arc-shaped connecting seat are rotationally connected, thereby ensuring the connection stability between the first connecting seat, the second connecting seat and the wind turbine hub, and improving the convenience of connecting the entire device with the wind turbine hub.

[0014] Preferably, the first connecting seat includes a base plate bolted to the wind turbine hub, and two ear plates fixed to the base plate, the two ear plates are arranged in parallel, and the ear plates are perpendicular to the base plate, the arc-shaped connecting seat is located between the two ear plates, and the arc-shaped connecting seat is rotatably connected to the ear plates.

[0015] By adopting the above technical solution, when in use, through the cooperation of the bottom plate and the two ear plates, a stable connection between the arc-shaped connecting seat and the wind turbine hub is ensured without affecting the rotational connection between the ear plates and the arc-shaped connecting seat.

[0016] Preferably, a triangular plate is further provided between the ear plate and the bottom plate, and two right-angled sides of the triangular plate are fixedly connected to the ear plate and the bottom plate respectively.

[0017] By adopting the above technical solution, when in use, the structural strength between the bottom plate and the ear plate is increased by setting the triangular plate.

[0018] Preferably, the swing arm includes two side plates arranged in parallel, and a transverse plate arranged between the two side plates, the two ends of the transverse plate are respectively fixedly connected to the side plates on the corresponding sides, a plurality of transverse plates are provided, and a plurality of weight reduction cavities are formed between the plurality of transverse plates and the two side plates.

[0019] By adopting the above technical solution, when in use, through the arrangement of the side panels and the cross panels, the weight of the swing arm is reduced while ensuring the overall structural strength of the swing arm, thereby facilitating the use and installation of the swing arm.

[0020] Preferably, a limiting structure for limiting the rotation angle of the swing arm is also provided on the arc-shaped connecting seat.

[0021] By adopting the above technical solution, when in use, the rotation angle of the swing arm is limited by the limiting structure to prevent the swing arm from rotating too much, which will affect the subsequent lifting and turning effect of the wind turbine hub.

[0022] In a second aspect, the present application provides a method for using a single-hook hub turning sling, which adopts the following technical solution: A method for using a single-hook wheel hub turning sling comprises the following steps: S1. Select an arc-shaped connection seat of corresponding specifications according to the size specifications of the wind turbine hub to be hoisted, that is, ensure that after the arc-shaped connection seat and the wind turbine hub are installed, the angle between the line connecting the first connection seat and the center of gravity of the wind turbine hub and the line connecting the second connection seat and the center of gravity of the wind turbine hub is between 60 degrees and 90 degrees; S2. Connect the external lifting device to the lifting hole of the swing arm, and lift the swing arm, the arc-shaped connecting seat and the wind turbine hub to a certain height above the ground through the external lifting device; S3, the piston rod of the hydraulic cylinder is extended to drive the swing arm to rotate. Under the action of gravity, when the swing arm rotates, the wind turbine hub rotates and turns over accordingly, so that during the turning over of the wind turbine hub, the center of gravity of the wind turbine hub and the arc-shaped connecting seat, the swing arm as a whole and the hanging hole, and the hanging point of the external hanging device are always on the same straight line, until the wind turbine hub is turned over to the specified state, and the turning over of the wind turbine hub is completed; S4, continue to lift the turned-over wind turbine hub to the corresponding machine base through the external lifting device, and at this time, the installation plate of the wind turbine hub is aligned with the installation interface of the machine base; S5, connecting the wind turbine hub and the base with bolts; S6. Remove the connection between the first connecting seat, the second connecting seat and the wind turbine hub, and move the turning hoist to the ground as a whole through an external hoist to facilitate connection with the subsequent wind turbine hub for secondary use.

[0023] By adopting the above technical scheme, when in use, the purpose of turning over the wind turbine hub with a low-altitude single hook is achieved through the cooperation of the hydraulic cylinder, the arc-shaped connecting seat, the swing arm, the first connecting seat and the second connecting seat, while ensuring the turning effect, the low-altitude operation is safer, and the overall operation is more convenient than the high-altitude turning method of two hoists cooperating in the prior art, and the construction cost is also reduced. In addition, the connection between the turning hoist and the wind turbine hub is also simpler and easier to use.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The arc-shaped connecting seat and the wind turbine hub are separated from the ground as a whole through the external hoist, that is, space is left for the wind turbine hub to turn over, and then the swing arm is driven to rotate through the driving structure. During the rotation of the swing arm, under the action of the wind turbine hub's own gravity, the wind turbine hub and the arc-shaped connecting seat rotate synchronously as a whole, so that the hanging hole, the hanging point of the external hoist, and the center of gravity of the wind turbine hub and the arc-shaped connecting seat are always located in the same straight line, so that the turning over of the wind turbine hub can be realized by single hook control, and then the turned-over wind turbine hub is lifted to the corresponding position of the machine base through the external hoist, and the wind turbine hub can be installed on the machine base by bolts, and finally the first connecting seat and the second connecting seat can be removed from the wind turbine hub. Compared with the operation method of two cranes cooperating to perform high-altitude turning in the prior art, the overall process is simpler, more convenient, safer, and also saves construction costs; 2. The angle between the line connecting the first connection seat and the center of gravity of the wind turbine hub and the line connecting the second connection seat and the center of gravity of the wind turbine hub is used to coordinate the hydraulic cylinder and the connection position between the hydraulic cylinder, the arc-shaped connection seat and the swing arm to ensure the effect and quality of the subsequent turning of the wind turbine hub; 3. Through the connection mode among the first connecting seat, the second connecting seat and the arc-shaped connecting seat, in combination with the structural setting of the swing arm, the turning hoist is more convenient to use as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram mainly showing the use status of the turning sling in the first embodiment of the present application; Figure 2 It is an axonometric diagram mainly showing the overall structure of the turning sling in the first embodiment of the present application; Figure 3 It is a cross-sectional view mainly showing the turning sling structure in the first embodiment of the present application; Figure 4 This is a schematic diagram mainly showing the state of the wind turbine hub before lifting in the first embodiment of the present application; Figure 5 This is a schematic diagram mainly showing the state of the wind turbine hub during the turning process in the first embodiment of the present application; Figure 6 This is a schematic diagram showing the state of the wind turbine hub after turning over in the first embodiment of the present application; Figure 7 It is a schematic diagram mainly showing the turning sling structure in the second embodiment of the present application; Figure 8 It is an exploded view of the turning sling structure mainly embodied in the second embodiment of the present application; Fig. 9 It is a schematic diagram mainly showing the arc-shaped connecting seat structure in the second embodiment of the present application.

[0026] Figure numerals: 1. first connecting seat; 11. bottom plate; 12. ear plate; 13. triangle plate; 2. second connecting seat; 3. arc-shaped connecting seat; 31. third seat body; 32. fourth seat body; 33. positioning hole; 34. limiting hole; 35. positioning bolt; 4. swing arm; 41. hanging hole; 42. side plate; 43. cross plate; 44. weight reduction cavity; 5. hydraulic cylinder; 6. first rotating pin; 7. second rotating pin; 8. diagonal support plate; 9. side enclosure; 10. extension seat; 101. first seat body; 102. second seat body; 103. storage groove; 104. snap-on convex ring; 20. wind turbine hub. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Fig. 9 This application is described in further detail.

[0028] The embodiment of the present application discloses a single-hook wheel hub turning hanger and a method of using the same.

[0029] Embodiment 1: Reference Figure 1 and Figure 2A single-hook hub turning hoist comprises a first connecting seat 1, a second connecting seat 2 and an arc-shaped connecting seat 3. Before lifting, the wind turbine hub 20 is placed horizontally on the ground or on transportation equipment. The first connecting seat 1 is fixedly connected to a connecting point on the wind turbine hub 20, and the second connecting seat 2 is fixedly connected to another connecting point on the wind turbine hub 20. The arc-shaped connecting seat 3 is located between the first connecting seat 1 and the second connecting seat 2, and one end of the arc-shaped connecting seat 3 is detachably connected to the first connecting seat 1, and the other end of the arc-shaped connecting seat 3 is detachably connected to the second connecting seat 2.

[0030] Reference Figure 1 and Figure 2 The first connecting seat 1 includes a base plate 11 and an ear plate 12. The base plate 11 is fixed to a connection point on the outer wall of the wind turbine hub 20 by bolts. Two ear plates 12 are provided, and the two ear plates 12 are arranged in parallel. The ear plate 12 is welded and fixed on the base plate 11, and the ear plate 12 is perpendicular to the base plate 11. At the same time, in order to ensure the structural strength of the connection between the ear plate 12 and the base plate 11, a triangular plate 13 is also provided between the ear plate 12 and the base plate 11. One of the right-angled sides of the triangular plate 13 is welded and fixed to the ear plate 12, and the other right-angled side of the triangular plate 13 is welded and fixed to the base plate 11. There are a plurality of triangular plates 13, and a plurality of triangular plates 13 are arranged at intervals on the base plate 11. In this embodiment, two triangular plates 13 are correspondingly provided to one ear plate 12, and the arc-shaped connecting seat 3 is rotatably arranged between the two ear plates 12.

[0031] Reference Figure 1 and Figure 2 In the present application, a first rotating pin 6 is fixed on the ear plate 12 by a nut, and the end of the arc-shaped connecting seat 3 is rotatably connected to the first rotating pin 6. A second rotating pin 7 is installed on the second connecting seat 2, and the other end of the arc-shaped connecting seat 3 is rotatably connected to the second rotating pin 7. When in use, the first rotating pin 6 and the second rotating pin 7 cooperate to make the first connecting seat 1 and the second connecting seat 2 form an articulated cooperation with the arc-shaped connecting seat 3, thereby facilitating the connection between the arc-shaped connecting seat 3 and the wind turbine hub 20, and making it more convenient to use.

[0032] Reference Figure 1 and Figure 2 At the same time, in the process of assembling the first connecting seat 1, the second connecting seat 2 and the wind turbine hub 20, in order to facilitate the subsequent turning over of the wind turbine hub 20, it is necessary to ensure that there is an angle between the line connecting the first connecting seat 1 and the center of gravity of the wind turbine hub 20 and the line connecting the second connecting seat 2 and the center of gravity of the wind turbine hub 20, so as to ensure the normal turning over effect of the subsequent wind turbine hub 20. In this embodiment, the setting range of this angle should be between sixty degrees and ninety degrees.

[0033] Reference Figure 2 and Figure 3A swing arm 4 is also provided on the arc-shaped connecting seat 3. One end of the swing arm 4 is hinged to the arc-shaped connecting seat 3, and a hanging hole 41 is provided at the other end of the swing arm 4. In the present application, the swing arm 4 is composed of two side panels 42 and a plurality of transverse panels 43. The two side panels 42 are arranged parallel to each other. The transverse panel 43 is located between the two side panels 42, and the two ends of the transverse panel 43 are respectively welded and fixed to the side panels 42 on the corresponding sides. A weight-reducing cavity 44 is enclosed between the plurality of transverse panels 43, and the hanging hole 41 is provided on the side panels 42. When in use, the arrangement of the plurality of transverse panels 43 and the side panels 42 ensures the structural strength of the swing arm 4 on the one hand, and reduces the weight of the swing arm 4 on the other hand, making it more convenient to use and saving processing costs.

[0034] Reference Figure 2 and Figure 3 A driving structure is provided on the arc-shaped connecting seat 3, and the driving structure is used to drive the swing arm 4 to rotate. The driving structure includes a hydraulic cylinder 5, and the hydraulic cylinder 5 is arranged as a whole on the arc-shaped connecting seat 3, and the cylinder end of the hydraulic cylinder 5 is hinged at the end of the arc-shaped connecting seat 3 close to the first connecting seat 1, and the piston rod end of the hydraulic cylinder 5 is hinged at the end of the swing arm 4 away from the lifting hole 41. At the same time, it needs to be ensured that in the present application, the positions of the hinge point between the piston rod end of the hydraulic cylinder 5 and the swing arm 4 and the lifting hole 41 on the swing arm 4, and the rotation point between the swing arm 4 and the arc-shaped connecting seat 3 are distributed in a triangular shape; by setting the position of the hydraulic cylinder 5 and coordinating the connection position of the hydraulic cylinder 5 and the swing arm 4, the purpose of driving the swing arm 4 to rotate can be achieved by rotating the piston rod of the hydraulic cylinder 5.

[0035] Reference Figure 1 and Figure 3 When in use, the wind turbine hub 20 is placed on the ground, and the arc-shaped connecting seat 3, the first connecting seat 1 and the second connecting seat 2 are assembled at corresponding positions on the wind turbine hub 20, and then the external hoist is connected to the lifting hole 41 on the swing arm 4, so that the wind turbine hub 20 equipped with the arc-shaped connecting seat 3 can be lifted by the external hoist. After the wind turbine hub 20 is off the ground, under the action of the gravity of the wind turbine hub 20, the wind turbine hub 20 rotates synchronously until the center of gravity of the wind turbine hub 20 and the arc-shaped connecting seat 3 as a whole and the lifting point and the lifting hole 41 of the external hoist are located on the same vertical line, the wind turbine hub 20 remains in a stable state, and as the wind turbine hub 20 is continuously lifted, until there is enough turning space under the wind turbine hub 20, the piston rod of the hydraulic cylinder 5 can be controlled to extend, thereby driving the swing arm 4 to rotate, thereby shifting the center of gravity of the wind turbine hub 20 and the arc-shaped connecting seat 3 as a whole, and then realizing the turning and rotation of the wind turbine hub 20 under the action of gravity.

[0036] Reference Figure 1 and Figure 3In the process of turning over the wind turbine hub 20, in order to prevent the hydraulic cylinder 5 piston rod from extending and driving the swing arm 4 to rotate too much, a limiting structure is also provided on the arc-shaped connecting seat 3. The limiting structure is used to limit the rotation angle of the swing arm 4. The limiting structure includes a diagonal support plate 8 provided on the arc-shaped connecting seat 3. The diagonal support plate 8 is welded and fixed on the arc-shaped connecting seat 3. The diagonal support plate 8 is used to abut and support the swing arm 4. In this embodiment, when the swing arm 4 rotates to abut against the diagonal support plate 8, the wind turbine hub 20 rotates and turns over to a specified angle, that is, it is aligned with the installation interface angle on the machine base.

[0037] Reference Figure 1 and Figure 3 A lateral enclosure 9 is also provided at one end of the arc-shaped connecting seat 3 close to the first connecting seat 1. The lateral enclosure 9 is welded and fixed to the arc-shaped connecting seat 3, and the lateral enclosure 9 is arranged on the outside of the first rotating pin 6. In actual use, the setting of the lateral enclosure 9 can limit the rotation range of the hydraulic cylinder 5 without affecting the rotation of the piston rod of the hydraulic cylinder 5 during the extension and retraction process, so as to cooperate with the diagonal support plate 8 to realize the limitation of the rotation angle of the swing arm 4.

[0038] Reference Figure 4 , Figure 5 and Figure 6 A method for using a single-hook wheel hub turning sling comprises the following steps: S1. Select an arc-shaped connection seat 3 of corresponding specifications according to the size specifications of the wind turbine hub 20 to be hoisted, that is, ensure that after the arc-shaped connection seat 3, the first connection seat 1 and the second connection seat 2 are installed with the wind turbine hub 20, the angle between the line connecting the first connection seat 1 and the center of gravity of the wind turbine hub 20 and the line connecting the second connection seat 2 and the center of gravity of the wind turbine hub 20 is between 60 and 90 degrees; S2. Fix the first connecting seat 1 and the second connecting seat 2 on the wind turbine hub 20 by bolts, connect the external lifting device to the lifting hole 41 of the swing arm 4, and control the external lifting device to lift the swing arm 4, the arc-shaped connecting seat 3 and the wind turbine hub 20 to a certain height above the ground. In this embodiment, it is necessary to lift the wind turbine hub 20 to a certain height above the ground. In the process of the wind turbine hub 20 rising above the ground, the wind turbine hub 20 rotates under the action of gravity until the center of gravity of the wind turbine hub 20 and the arc-shaped connecting seat 3 as a whole and the lifting point and the lifting hole 41 of the external lifting device are on the same vertical line. The wind turbine hub 20 remains in a stable state, and then the lifting of the wind turbine hub 20 is suspended; S3, by controlling the piston rod of the hydraulic cylinder 5 to extend and drive the swing arm 4 to rotate, under the action of gravity, when the swing arm 4 rotates, the center of gravity of the wind turbine hub 20 and the arc-shaped connecting seat 3 is shifted, so that the wind turbine hub 20 rotates and turns over. During the turning over of the wind turbine hub 20, the center of gravity of the wind turbine hub 20, the arc-shaped connecting seat 3, and the swing arm 4 as a whole are always on the same straight line with the hanging hole 41 on the swing arm 4 and the hanging point of the external hanging device, until the piston rod of the hydraulic cylinder 5 drives the swing arm 4 to abut against the diagonal support plate 8, and the wind turbine hub 20 turns over to the specified state. At this time, the angle of the installation disk of the wind turbine hub 20 is aligned with the angle of the installation interface of the machine base, and the turning over of the wind turbine hub 20 is completed; S4, continue to lift the turned-over wind turbine hub 20 to the corresponding machine base through an external lifting device, and align the mounting plate of the wind turbine hub 20 with the mounting interface of the machine base; S5. The staff uses a tool to screw the bolts into the mounting plate one by one, so that the wind turbine hub 20 and the base are bolted together, thereby completing the assembly of the wind turbine hub 20; S6. Remove the first connecting seat 1 and the second connecting seat 2 from the wind turbine hub 20, so that the arc-shaped connecting seat 3 is separated from the wind turbine hub 20, and then use an external lifting device to move the arc-shaped connecting seat 3, the swing arm 4, the first connecting seat 1 and the second connecting seat 2 as a whole to the ground, so as to facilitate connection with the subsequent wind turbine hub 20, and then facilitate secondary use.

[0039] The implementation principle of the embodiment of the present application is as follows: when in use, the wind turbine hub 20 is transported to the designated position by means of transportation equipment, and then an arc-shaped connecting seat 3 of corresponding specifications is selected, and the first connecting seat 1 and the second connecting seat 2 on the arc-shaped connecting seat 3 are respectively fixed at the connection of the wind turbine hub 20 by bolts, and the external hoist is connected to the hanging hole 41 on the swing arm 4, and then the external hoist is started to lift the wind turbine hub 20 with the arc-shaped connecting seat 3. During the process of the wind turbine hub 20 rising from the ground, the wind turbine hub 20 itself rotates under the influence of the gravity of the wind turbine hub 20 until the center of gravity of the wind turbine hub 20 and the arc-shaped connecting seat 3 as a whole and the hanging point and the hanging hole 41 of the external hoist are on the same vertical line, and the wind turbine hub 20 remains in a stable state, and is now in a low-altitude environment. The hydraulic cylinder 5 can be controlled to drive the swing arm 4 to rotate. The rotation of the swing arm 4 causes the center of gravity of the wind turbine hub 20, the arc-shaped connecting seat 3 and the swing arm 4 to shift, so that the wind turbine hub 20 rotates and turns over. When the side wall of the swing arm 4 abuts against the diagonal support plate 8, the swing arm 4 rotates to the specified position. At this time, the wind turbine hub 20 completes the turning over. Thereafter, the turned wind turbine hub 20 is transferred to the corresponding machine base installation position through an external hoisting device. The wind turbine hub 20 can be installed on the machine base by the staff, and finally the first connecting seat 1 and the second connecting seat 2 can be removed from the wind turbine hub 20. The overall operation process is simple and convenient. Compared with the existing method in which two cranes cooperate to lift the wind turbine hub 20 and turn it over at high altitude, the construction cost is lower and the construction safety is higher.

[0040] Embodiment 2: Reference Figure 7 and Figure 8 The difference between this embodiment and embodiment 1 is that an extension seat 10 is provided at the end of the swing arm 4 away from the arc-shaped connecting seat 3, and the end of the extension seat 10 facing the swing arm 4 is hinged to the hanging hole 41 of the swing arm 4 by bolts, and the other end of the extension seat 10 is provided with a connecting hole with the same inner diameter as the hanging hole 41; the extension seat 10 includes a first seat body 101 and a second seat body 102 which are arranged opposite to each other, and a storage groove 103 is provided on the side of the first seat body 101 facing the second seat body 102 and on the side of the second seat body 102 facing the first seat body 101, and a counterweight block can be placed in the storage groove 103, and a clamping convex ring 104 is integrally formed on the side of the first seat body 101 facing the second seat body 102, and an annular groove is provided on the side of the second seat body 102 facing the first seat body 101.

[0041] Reference Figure 7 and Figure 8When in use, a number of extension seats 10 of different sizes are added to the end of the swing arm 4, and two adjacent extension seats 10 are hinged to each other, so as to increase the overall length of the swing arm 4. At the same time, before installing the extension seat 10, the first seat body 101 and the second seat body 102 can be separated as needed, so that a counterweight block is set in the storage groove 103 to change the overall weight of the swing arm 4, thereby adjusting the overall weight and center of gravity position of the turning sling, so as to adapt to wind turbine hubs 20 of different specifications.

[0042] Reference Figure 7 and Fig. 9 In addition, in this embodiment, the arc-shaped connecting seat 3 is composed of a third seat body 31 and a fourth seat body 32. The fourth seat body 32 is located outside the third seat body 31, the first connecting seat 1 is hinged at the end of the fourth seat body 32, the second connecting seat 2 is hinged at the end of the third seat body 31 away from the fourth seat body 32, the hydraulic cylinder 5 is installed at the end of the third seat body 31 close to the fourth seat body 32, and the rotation axis of the hydraulic cylinder 5 and the third seat body 31 is located above the rotation axis of the fourth seat body 32 and the first connecting seat 1.

[0043] Reference Figure 7 and Fig. 9 A group of positioning holes 33 are opened on the side wall of the third base body 31, and a plurality of groups of limiting holes 34 are opened on the side wall of the fourth base body 32. The plurality of groups of limiting holes 34 are evenly distributed along the arc edge of the third base body 31. The positioning holes 33 and the limiting holes 34 are matched with each other, and a positioning bolt 35 is passed through the positioning hole 33. The movable end of the positioning bolt 35 passes through the positioning hole 33 and a group of limiting holes 34 and is locked by a locking nut.

[0044] Reference Figure 7 and Fig. 9 When in use, the staff can adjust the relative positions of the third seat body 31 and the fourth seat body 32 according to the specifications of the wind turbine hub 20 to be turned over, that is, control the positioning bolts 35 to penetrate into the limiting holes 34 at different positions, so as to adjust the overall length of the arc-shaped connecting seat 3. After the first connecting seat 1, the second connecting seat 2 and the wind turbine hub 20 are installed, the angle between the line connecting the first connecting seat 1 and the center of gravity of the wind turbine hub 20 and the line connecting the second connecting seat 2 and the center of gravity of the wind turbine hub 20 is controlled to be between sixty degrees and ninety degrees. Combined with the adjustment of the length and weight of the swing arm 4, it is possible to achieve effective turning over of wind turbine hubs 20 of different specifications and models, thereby improving the overall applicability of the device.

[0045] The implementation principle of the embodiment of the present application is as follows: when in use, after the wind turbine hub 20 is transported to the designated position, the length of the arc-shaped connecting seat 3 and the length and weight of the swing arm 4 can be adjusted according to the size specifications of the wind turbine hub 20, and the first connecting seat 1 and the second connecting seat 2 are respectively fixed at the connection of the wind turbine hub 20 by bolts, and the external hoist is connected to the lifting hole 41 on the swing arm 4, and then the external hoist is started to lift the wind turbine hub 20 with the arc-shaped connecting seat 3. When the wind turbine hub 20 is about one meter above the ground, that is, the minimum turning space requirement of the composite wind turbine hub 20 is reached, the hydraulic cylinder 5 can be controlled again. The swing arm 4 is driven to rotate, and the rotation of the swing arm 4 causes the center of gravity of the wind turbine hub 20, the arc-shaped connecting seat 3 and the swing arm 4 to shift as a whole, thereby causing the wind turbine hub 20 to rotate and turn over. When the side wall of the swing arm 4 abuts against the diagonal support plate 8, the swing arm 4 rotates to a specified position, and the wind turbine hub 20 completes its turning over. Thereafter, the turned-over wind turbine hub 20 is transported to the corresponding machine base installation position through an external hoist, and then the wind turbine hub 20 can be installed on the machine base by staff, and finally the first connecting seat 1 and the second connecting seat 2 can be removed from the wind turbine hub 20. The overall operation process is simple and convenient, and the overall applicability of the device is higher.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A single hook wheel hub turning hanger, characterized in that: The invention comprises a first connection seat (1) and a second connection seat (2) for connecting a wind turbine hub (20), and an arc-shaped connection seat (3) arranged between the first connection seat (1) and the second connection seat (2), one end of the arc-shaped connection seat (3) is connected to the first connection seat (1), and the other end of the arc-shaped connection seat (3) is connected to the second connection seat (2), an angle exists between a line connecting the center of gravity of the first connection seat (1) and the wind turbine hub (20) and a line connecting the center of gravity of the second connection seat (2) and the wind turbine hub (20), a swing arm (4) is rotatably connected to the arc-shaped connection seat (3), a lifting hole (41) for connecting a lifting device is arranged at one end of the swing arm (4) away from the arc-shaped connection seat (3), and a driving structure for driving the swing arm (4) to rotate is arranged on the arc-shaped connection seat (3).

2. A single-hook wheel hub turning hanger according to claim 1, characterized in that: The angle between a line connecting the first connection seat (1) and the center of gravity of the wind turbine hub (20) and a line connecting the second connection seat (2) and the center of gravity of the wind turbine hub (20) is between sixty and ninety degrees.

3. The single-hook wheel hub turning hanger according to claim 1, characterized in that: The driving structure comprises a hydraulic cylinder (5) arranged on an arc-shaped connecting seat (3), the cylinder body end of the hydraulic cylinder (5) being hinged to an end of the arc-shaped connecting seat (3) close to the first connecting seat (1), the piston rod end of the hydraulic cylinder (5) being hinged to an end of the swing arm (4) away from the hanging hole (41), and the hinge point between the piston rod end of the hydraulic cylinder (5) and the swing arm (4), the hanging hole (41), and the rotation point between the swing arm (4) and the arc-shaped connecting seat (3) being distributed in a triangular shape.

4. A single-hook wheel hub turning hanger according to claim 3, characterized in that: The first connecting seat (1) and the arc-shaped connecting seat (3) are rotatably connected via a first rotating pin (6), and the second connecting seat (2) and the arc-shaped connecting seat (3) are rotatably connected via a second rotating pin (7).

5. The single-hook wheel hub turning hanger according to claim 4, characterized in that: The first connection seat (1) comprises a base plate (11) bolted to a wind turbine hub (20), and two ear plates (12) fixed to the base plate (11), the two ear plates (12) being arranged in parallel, and the ear plates (12) being perpendicular to the base plate (11), the arc-shaped connection seat (3) being located between the two ear plates (12), and the arc-shaped connection seat (3) being rotatably connected to the ear plates (12).

6. A single-hook wheel hub turning hanger according to claim 5, characterized in that: A triangular plate (13) is also provided between the ear plate (12) and the bottom plate (11), and two right-angled sides of the triangular plate (13) are fixedly connected to the ear plate (12) and the bottom plate (11) respectively.

7. The single-hook wheel hub turning hanger according to claim 1, characterized in that: The swing arm (4) comprises two side plates (42) arranged in parallel, and a transverse plate (43) arranged between the two side plates (42), the two ends of the transverse plate (43) are respectively fixedly connected to the side plates (42) on the corresponding sides, a plurality of transverse plates (43) are arranged, and a plurality of weight reduction cavities (44) are formed between the plurality of transverse plates (43) and the two side plates (42).

8. The single-hook wheel hub turning hanger according to claim 1, characterized in that: The arc-shaped connecting seat (3) is also provided with a limiting structure for limiting the rotation angle of the swing arm (4).

9. A method for using a single-hook wheel hub turning hoist, implemented by using a single-hook wheel hub turning hoist as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1. Selecting an arc-shaped connecting seat (3) of corresponding specifications according to the size specifications of the wind turbine hub (20) to be hoisted, that is, ensuring that after the arc-shaped connecting seat (3) and the wind turbine hub (20) are installed, the angle between the line connecting the center of gravity of the first connecting seat (1) and the wind turbine hub (20) and the line connecting the center of gravity of the second connecting seat (2) and the wind turbine hub (20) is between sixty and ninety degrees; S2, connecting the external lifting device to the lifting hole (41) of the swing arm (4), and lifting the swing arm (4), the arc-shaped connecting seat (3) and the wind turbine hub (20) to a certain height above the ground by using the external lifting device; S3, the piston rod of the hydraulic cylinder (5) is extended to drive the swing arm (4) to rotate. Under the action of gravity, when the swing arm (4) rotates, the wind turbine hub (20) rotates and turns over accordingly, so that during the turning over of the wind turbine hub (20), the center of gravity of the wind turbine hub (20), the arc-shaped connecting seat (3), the swing arm (4) as a whole, the hanging hole (41), and the hanging point of the external hanging device are always on the same straight line, until the wind turbine hub (20) turns over to a specified state, and the turning over of the wind turbine hub (20) is completed; S4, using an external lifting device to continue lifting the turned-over wind turbine hub (20) to the corresponding machine base, at which time the mounting plate of the wind turbine hub (20) is aligned with the mounting interface of the machine base; S5, connecting the wind turbine hub (20) and the machine base with bolts; S6. Disconnect the first connection seat (1), the second connection seat (2) and the wind turbine hub (20), and move the turning hoist as a whole to the ground through an external hoist to facilitate connection with a subsequent wind turbine hub (20) for secondary use.

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