A swinging mechanism and method for a wind turbine blade hoist

Abstract

The present invention relates to a swinging mechanism and method for a wind turbine blade sling. The swinging mechanism includes a suspension rod and a suspension beam hinged thereto. A main push chute is provided on the suspension rod, and a main push slider is slidably fitted in the main push chute. A guide rail chute is provided on the suspension beam, and a guide rail slider is slidably fitted in the guide rail chute. The main push chute and the guide rail chute are arranged crosswise. A linear drive component is provided on the suspension rod and / or the suspension beam. The moving end of the linear drive component is rotatably connected to a rotating shaft and can drive the rotating shaft to reciprocate linearly. The rotating shaft is rotatably connected to the main push slider and the guide rail slider. The present invention forms a connecting rod slider mechanism through the linear drive component, the rotating shaft, the main push chute, the main push slider, the guide rail chute and the guide rail slider. The force required to push the suspension rod and the suspension beam to rotate around the hinge point is relatively small. The connecting rod slider mechanism can select a linear drive component with a single small driving force, and has good economy, reliability and safety.

Description

Technical Field

[0001] The present invention relates to the field of wind power installation, in particular to a swing mechanism and method for a wind turbine blade sling. Background Art

[0002] The traditional installation method of wind turbine blades generally adopts the impeller installation method, that is, at a low position on the ground, the hub and three blades are assembled into an impeller as a whole, and then the whole is lifted to the nacelle height for docking and installation with the nacelle. However, with the increasing competition in the wind power industry, in order to reduce the cost per kilowatt-hour, the capacity of wind turbines and the growth rate of the swept area are increasing faster and faster, and the length and weight of the blades of the wind turbines are also increasing rapidly. This makes the weight of the impeller exceed the lifting capacity of the existing cranes, and the cost of cranes with stronger capabilities is huge and uneconomical. In addition, in order to reduce the cost per kilowatt-hour, the installation cycle of wind turbines is also increasingly expected to be compressed, which necessarily requires improving the installation efficiency and extending the installation window time by increasing the wind speed that the installation can adapt to. The traditional impeller installation is slow in efficiency and has a low wind speed adaptation. All these make the traditional impeller installation method increasingly difficult to adapt to the technical development trend of wind power.

[0003] In this context, the single-blade installation technology using a single-blade sling as a tool can well meet the new requirements. By installing the hub and blades separately, the weight of each lifting is greatly reduced. Due to the special shape of the blade, the sling needs to adjust the swing angle of the sling before and during the lifting of the blade to ensure that the requirements are met during the lifting and installation of the blade.

[0004] The Chinese patent application with the patent publication number CN109969933A discloses a single-blade installation sling for wind blades. The longitudinal swing mechanism used to realize the swing with the blade adopts a four-bar mechanism driven by an oil cylinder. This form will cause a large force on the oil cylinder during the rotation process, and will also cause a large force on the connection parts of the main beam, the swing arm and the oil cylinder. It requires a large-thrust oil cylinder or multiple small-thrust oil cylinders to act together to drive, which is not economical to implement and will also bring certain safety hazards. Summary of the Invention

[0005] The purpose of the present invention is to provide a swing mechanism and method for a wind turbine blade sling in view of the problem existing in the prior art that for the existing single-blade installation sling of wind turbines, a four-bar mechanism driven by an oil cylinder is adopted, which will cause a large force on the oil cylinder during the rotation process, and will also cause a large force on the connection parts of the main beam, the boom and the oil cylinder. It requires a large-thrust oil cylinder or multiple small-thrust oil cylinders to act together to drive, which is not economical to implement and will also bring certain safety risks.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A swing mechanism for a wind turbine blade hoist, comprising a suspension rod and a suspension beam hinged thereto. A main push chute is provided on the suspension rod, and a main push slider is slidably engaged in the main push chute. A guide rail chute is provided on the suspension beam, and a guide rail slider is slidably engaged in the guide rail chute. The main push chute and the guide rail chute are arranged crosswise. A linear drive component is provided on the suspension rod and / or the suspension beam. The moving end of the linear drive component is rotatably connected to a rotating shaft and can drive the rotating shaft to reciprocate linearly. The rotating shaft is rotatably connected to the main push slider and the guide rail slider, and the suspension beam carries the blade.

[0008] By using the swing mechanism for a wind turbine blade hoist of the present invention, a link-slider mechanism is formed by the linear drive component, the rotating shaft, the main push chute, the main push slider, the guide rail chute and the guide rail slider. The main push slider and the guide rail slider are driven by the linear drive component to move in the corresponding chutes, thereby pushing the suspension rod and the suspension beam to rotate around the hinge point, achieving the purpose of changing the angle between the suspension rod and the suspension beam, realizing the adjustment of the tilt angle of the single-blade hoist, that is, realizing the swing function. When the guide rail slider moves in the guide rail chute, it is mainly affected by the frictional force along the chute direction and mainly affected by the component force of the main push slider in this direction along the normal direction of the chute, and the acting force is small. The main push slider is installed in the main push chute and is mainly affected by the pushing and pulling force of the linear drive component when reciprocating in the main push chute. The force required to change the angle between the suspension rod and the suspension beam is small. This link-slider mechanism can select a linear drive component with a single small driving force, having good economy, reliability and safety.

[0009] Preferably, the main push chute is provided on the suspension rod along its length direction, and the guide rail chute is provided on the suspension beam along its length direction.

[0010] Preferably, a suspension hole is provided at the top of the suspension rod, and the suspension hole is used to connect the suspension cable of the hoisting equipment.

[0011] Preferably, a connection hole is provided at the bottom of the suspension rod, and the suspension rod and the suspension beam are hinged through the connection hole.

[0012] Further preferably, there is an angle α between the connection line of the connection hole and the suspension hole and the axis of the main push chute, and the angle range of α is 5°-45°.

[0013] With this structure, by setting the axis of the main push chute and the connection line of the two hinge points on the suspension rod as α, the shortest stroke of the reciprocating linear motion of the rotating shaft can be changed, thereby reducing the moving distance of the moving end of the linear drive component, correspondingly reducing the size of the guide rail chute and the suspension beam, making the structure of the swing mechanism of the wind turbine blade hoist more compact, and achieving the best combination of force and stroke.

[0014] Further preferably, the angular range of α is 10° - 20°.

[0015] Further preferably, the angular range of α is 15° - 20°.

[0016] Preferably, the direction in which the moving end of the linear driving component drives the rotating shaft to move linearly is parallel to the setting direction of the main pushing chute or the setting direction of the guide rail chute.

[0017] Further preferably, the direction in which the moving end of the linear driving component drives the rotating shaft to move linearly coincides with the setting direction of the main pushing chute or the setting direction of the guide rail chute.

[0018] Preferably, first wear-resistant plates are respectively provided on two surfaces of the main pushing slider that cooperate with the main pushing chute, and second wear-resistant plates are respectively provided on two surfaces of the guide rail slider that cooperate with the guide rail chute.

[0019] Further preferably, both the first wear-resistant plate and the second wear-resistant plate are polytetrafluoroethylene plates or wear-resistant steel plates.

[0020] Preferably, a bearing is provided between the rotating shaft and the main pushing slider.

[0021] Further preferably, the bearing is a rolling bearing or a sliding bearing.

[0022] Preferably, the hanging beam includes a main beam and a guide beam connected to the top thereof. The guide rail chute is provided between the guide beam and the main beam. The suspension rod is hinged to the middle of the main beam. The linear driving component is provided on the top of the main beam, and the moving direction of the moving end of the linear driving component coincides with the setting direction of the guide rail chute.

[0023] Further preferably, the guide beam includes a left box girder and a right box girder arranged opposite thereto. There is an accommodation space between the left box girder and the right box girder, and the linear driving component can be arranged in the accommodation space. At least one linear driving component is provided on the top of the main beam, and at least one side of the left box girder and / or at least one side of the right box girder are provided with the linear driving component.

[0024] Further preferably, the left box girder and the right box girder are connected into one body by a plurality of connecting beams.

[0025] Further preferably, the guide beam is arranged in the middle of the main beam. At least one linear driving component is provided on the top of the main beam, and at least one side of the guide beam is provided with the linear driving component.

[0026] Further preferably, all the linear drive components are arranged at one end of the main beam or all the linear drive components are respectively arranged at both ends of the main beam.

[0027] When the linear drive components are arranged at one end of the main beam, all the linear drive components provide thrust or pull force simultaneously; when the linear drive components are respectively arranged at both ends of the main beam, when the linear drive components at one end provide thrust, the linear drive components at the other end provide pull force.

[0028] Preferably, the linear drive component is an oil cylinder system, a cylinder system, a lead screw system, a rack and pinion system or a sprocket and chain system. The telescopic end of the oil cylinder system or the cylinder system is rotatably connected to the rotating shaft, and the moving part of the lead screw system, the rack and pinion system or the sprocket and chain system is connected to the rotating shaft.

[0029] The present invention also provides a swinging method for a swinging mechanism of a wind turbine blade hoist. Using the swinging mechanism of a wind turbine blade hoist as described in any one of the above, the method includes the following steps:

[0030] The moving end of the linear drive component drives the rotating shaft to move linearly, so that the main push slider moves in the main push chute, and at the same time, the guide rail slider moves in the guide rail chute, pushing the hanging beam and the hanging rod to rotate around the hinge point, that is, driving the blade to rotate in the vertical plane.

[0031] Adopting the swinging method of a swinging mechanism of a wind turbine blade hoist described in the present invention, a connecting rod slider mechanism is formed by the linear drive component, the rotating shaft, the main push chute, the main push slider, the guide rail chute and the guide rail slider. The main push slider and the guide rail slider are driven by the linear drive component to move in the corresponding chutes, so as to push the hanging rod and the hanging beam to rotate around the hinge point, achieving the purpose of changing the angle between the hanging rod and the hanging beam, realizing the adjustment of the inclination angle of the single-blade hoist, that is, realizing the swinging function; when the guide rail slider moves in the guide rail chute, it is mainly affected by the frictional force along the chute direction, and is mainly affected by the component force of the main push slider in this direction along the normal direction of the chute, and the acting force is small. The main push slider is installed in the main push chute and is mainly affected by the pushing and pulling force of the linear drive component when reciprocating in the main push chute. The force required to change the angle between the hanging rod and the hanging beam is small. This connecting rod slider mechanism can select a single linear drive component with a small driving force, and has good economy, reliability and safety.

[0032] The present invention also provides a wind turbine blade spreader, which includes a clamping mechanism, a guy wire mechanism, and the wind turbine blade spreader swing mechanism as described in any one of the above. The clamping mechanism and the guy wire mechanism are both arranged on the suspension beam. The clamping mechanism is used for clamping the blade, and the guy wire mechanism is used for anchoring the blade.

[0033] By using the wind turbine blade spreader of the present invention, through the connecting rod slider mechanism, the swing rotation between the suspension rod and the suspension beam can be realized by using a single linear drive component with a small driving force, and the angle between the two can be adjusted. It has good economy, reliability and safety. The spreader has a simple structure, is easy to use, and has good effects.

[0034] Preferably, the clamping mechanism is connected to an equipment platform, and a power device and a control device are arranged on the equipment platform.

[0035] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0036] 1. For the wind turbine blade spreader swing mechanism and method of the present invention, a connecting rod slider mechanism is formed by the linear drive component, the rotating shaft, the main push chute, the main push slider, the guide rail chute and the guide rail slider. By driving the main push slider and the guide rail slider to move in the corresponding chutes through the linear drive component, the suspension rod and the suspension beam are pushed to rotate around the hinge point, so as to achieve the purpose of changing the angle between the suspension rod and the suspension beam, and realize the adjustment of the inclination angle of the single-blade spreader, that is, realize the swing function. When the guide rail slider moves in the guide rail chute, it is mainly affected by the frictional force along the chute direction, and mainly affected by the component force of the main push slider in this direction along the normal direction of the chute, and the acting force is small. The main push slider is installed in the main push chute and is mainly affected by the pushing and pulling force of the linear drive component when reciprocating in the main push chute. The force required to change the angle between the suspension rod and the suspension beam is small. This connecting rod slider mechanism can select a single linear drive component with a small driving force, and has good economy, reliability and safety.

[0037] 2. For the wind turbine blade spreader of the present invention, through the connecting rod slider mechanism, the swing rotation between the suspension rod and the suspension beam can be realized by using a single linear drive component with a small driving force, and the angle between the two can be adjusted. It has good economy, reliability and safety. The spreader has a simple structure, is easy to use, and has good effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is the front view structural schematic diagram of the wind turbine blade spreader swing mechanism in Embodiment 1;

[0039] Figure 2Schematic diagram of the working of the swing mechanism of the wind turbine blade hoist in Embodiment 1;

[0040] Figure 3 Axonometric structure diagram of the swing mechanism of the wind turbine blade hoist in Embodiment 1;

[0041] Figure 4 Structure diagram of the suspension rod in Embodiment 1;

[0042] Figure 5 Structure diagram of the guide beam in Embodiment 1;

[0043] Figure 6 Structure diagram of the connecting rod slider mechanism in Embodiment 1;

[0044] Figure 7 Layout diagram of double oil cylinders on the inner side of the guide beam of the swing mechanism in Embodiment 2;

[0045] Figure 8 Layout diagram of double oil cylinders on the outer side of the guide beam of the swing mechanism in Embodiment 3;

[0046] Figure 9 Front view structure diagram of the swing mechanism of the wind turbine blade hoist in Embodiment 5;

[0047] Figure 10 Structure diagram of the wind turbine blade hoist in Embodiment 11.

[0048] Markings in the figure: 01 - blade, 1 - suspension rod, 11 - main push chute, 12 - main push slider, 121 - first wear-resistant plate, 13 - connection hole, 14 - lifting hole, 2 - lifting beam, 21 - guide rail chute, 22 - guide rail slider, 221 - second wear-resistant plate, 23 - guide beam, 231 - left box girder, 232 - right box girder, 233 - connecting beam, 234 - accommodation space, 24 - main beam, 3 - rotating shaft, 31 - bearing, 41 - oil cylinder, 42 - telescopic rod, 43 - pin shaft, 44 - first mounting seat, 441 - detachable support, 442 - fixed support, 51 - lead screw, 52 - second mounting seat, 53 - driving component, 6 - clamping mechanism, 7 - guy wire mechanism, 8 - equipment platform. Detailed implementation manners

[0049] The present invention will be described in detail below with reference to the accompanying drawings.

[0050] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] Embodiment 1

[0052] As Figures 1 to 6As shown in the figure, a swing mechanism of a fan blade sling according to the present invention includes a suspension rod 1 and a suspension beam 2 hinged thereto, and the suspension beam 2 bears the blade 01.

[0053] As Figures 1 to 3 and Figure 6 shown in the figure, the linear drive component is the drive unit of the swing mechanism. In this embodiment, the linear drive component is selected as an oil cylinder system and is arranged on the suspension beam 2. The oil cylinder system includes an oil cylinder 41, which has a matching telescopic rod 42. The end of the telescopic rod 42 is rotatably connected to a rotating shaft 3. The movement of the telescopic rod 42 driven by the oil cylinder 41 can drive the rotating shaft 3 to reciprocate linearly. A guide rail chute 21 is provided along the length direction of the suspension beam 2. The oil cylinder 41 drives the rotating shaft 3 to move along the guide rail chute 21. The rotating shaft 3 is rotatably connected to a main push slider 12 and a guide rail slider 22. The movement of the rotating shaft 3 drives the guide rail slider 22 to move along the guide rail chute 21 and the main push slider 12 to move along the main push chute 11. The main push chute 11 and the guide rail chute 21 are cross - arranged, so as to promote the change of the angle between the suspension rod 1 and the suspension beam 2, realizing the swing and angle adjustment of the sling.

[0054] As Figure 6 shown in the figure, the middle of the rotating shaft 3 is connected to the telescopic rod 42. Two guide rail sliders 22 and two main push sliders 12 are symmetrically arranged on both sides of the telescopic rod 42, and the main push sliders 12 are located on the outside.

[0055] As Figures 1 to 3 and Figure 6 shown in the figure, the outer wall of the oil cylinder 41 has a pin shaft 43 for installation. The pin shaft 43 and the outer wall of the cylinder are an integral structure. The pin shaft 43 is hinged to the first mounting seat 44, and the first mounting seat 44 is arranged on the suspension beam 2. The oil cylinder 41 can rotate around the pin shaft 43, reducing the bending moment effect during the operation of the oil cylinder 41.

[0056] As Figure 1 and Figure 2 shown in the figure, the first mounting seat 44 includes a detachable support 441 and a fixed support 442. The fixed support 442 is welded to the top of the suspension beam 2. The detachable support 441 is connected to the top of the fixed support 442. The detachable support 441 and the fixed support 442 are connected by bolts or pins. The mating surface of the detachable support 441 and the fixed support 442 is parallel to the center line during the installation of the oil cylinder 41.

[0057] As Figures 1 to 4 and Figure 6As shown in the figure, the suspension rod 1 is a hollow box-shaped bifurcated structure. There is a suspension hole 14 at the top of the suspension rod 1, which is used to connect the suspension cable of the lifting equipment. There is a connection hole 13 at the bottom of the suspension rod 1. The two fork sides are respectively placed on both sides of the suspension beam 2. The lower part of the fork side is hinged to the middle part of the suspension beam 2 through the connection hole 13. Each fork side is provided with a main push chute 11. The main push chute 11 is arranged along the length direction of the suspension rod 1. A main push slider 12 is slidably matched in the main push chute 11. Among them, the front view of the suspension rod 1 is in the shape of a boomerang, that is, there is an included angle α between the connection line of the suspension hole 14 and the connection hole 13 and the axis of the main push chute 11. The angle range of α is 5° - 45°. In this embodiment, the angle range of α is preferably 10° - 20°, and the best is 15° - 20°. The calculation formula of α is as follows.

[0058] α = |(|θ1| - |θ2|) / 2|

[0059] Among them, θ1 and θ2 are respectively the included angles between the connection lines of the two hinge points on the suspension rod 1 and the central axis of the suspension beam 2 under the extreme extension and contraction strokes of the linear drive component. The setting of α mainly considers the matching of the suspension point with the center of gravity of the entire lifting tool and the lifted blade 01, which can reduce the sliding stroke of the main push slider 12 and the guide rail slider 22 along the guide rail chute 21, make the structure of the swing mechanism of the wind turbine blade lifting tool more compact, reduce the size and weight of the guide rail chute 21, and achieve the best combination of force and stroke.

[0060] As Figure 6 shown, first wear-resistant plates 121 are respectively arranged on the two surfaces of the main push slider 12 that cooperate with the main push chute 11, and second wear-resistant plates 221 are respectively arranged on the two surfaces of the guide rail slider 22 that cooperate with the guide rail chute 21. Both the first wear-resistant plate 121 and the second wear-resistant plate 221 are polytetrafluoroethylene plates or wear-resistant steel plates. A bearing 31 is arranged between the rotating shaft 3 and the main push slider 12. The bearing 31 is a rolling bearing or a sliding bearing.

[0061] As Figures 1 to 3 shown, the suspension beam 2 includes a main beam 24 and a guide beam 23 connected to the top thereof. A guide rail chute 21 is arranged between the guide beam 23 and the main beam 24. The guide beam 23 is welded to the main beam 24. The suspension rod 1 is hinged to the middle part of the main beam 24. At least one oil cylinder 41 is arranged on the top of the main beam 24. The movement direction of the telescopic rod 42 coincides with the setting direction of the guide rail chute 21.

[0062] As Figures 1 to 3 and Figure 5As shown in the figure, the guide beam 23 includes a left box girder 231 and a right box girder 232 arranged opposite to it. There is an accommodation space 234 between the left box girder 231 and the right box girder 232. The accommodation space 234 can be provided with an oil cylinder 41. The left box girder 231 and the right box girder 232 are connected into one body by a plurality of connecting beams 233, and the connection method can be welding or bolting. At least one side of the left box girder 231 and / or at least one side of the right box girder 232 are provided with an oil cylinder 41. In this embodiment, only one oil cylinder 41 arranged in the accommodation space 234 is illustrated. In fact, the oil cylinder 41 can be arranged at a total of three positions on both sides of the left box girder 231 and the right box girder 232. When there are multiple oil cylinders 41, they can be arranged at one end of the main beam 24 to provide thrust simultaneously or provide tension simultaneously, or they can be respectively arranged at both ends of the main beam 24. When the oil cylinder 41 at one end provides thrust, the oil cylinder 41 at the other end provides tension.

[0063] For a swing mechanism of a wind turbine blade hoist in this embodiment, a link-slider mechanism is formed by an oil cylinder 41, a rotating shaft 3, a main push chute 11, a main push slider 12, a guide rail chute 21, and a guide rail slider 22. By driving the main push slider 12 and the guide rail slider 22 to move in the corresponding chutes by the oil cylinder 41, the suspension rod 1 and the suspension beam 2 are pushed to rotate around the hinge point, so as to achieve the purpose of changing the angle between the suspension rod 1 and the suspension beam 2, realizing the adjustment of the inclination angle of the single-blade hoist, that is, realizing the swing function; when the guide rail slider 22 moves in the guide rail chute 21, it is mainly affected by the frictional force along the chute direction and mainly affected by the component force of the main push slider 12 in this direction along the normal direction of the chute, and the acting force is small. The main push slider 12 is installed in the main push chute 11 and is mainly affected by the pushing and pulling force of the oil cylinder 41 when reciprocating in the main push chute 11. The force required to change the angle between the suspension rod 1 and the suspension beam 2 is small. This link-slider mechanism can select an oil cylinder 41 with a small driving force per unit, and has good economy, reliability, and safety.

[0064] Embodiment 2

[0065] The difference between a swing mechanism of a wind turbine blade hoist according to the present invention and that in Embodiment 1 is that in this embodiment, several oil cylinders 41 are provided on the top of the main beam 24, and all the telescopic rods 42 are arranged in the accommodation space 234. All the oil cylinders 41 are located at one end of the main beam 24 (as Figure 7 shown), providing thrust simultaneously or providing tension simultaneously, or oil cylinders 41 are respectively provided at both ends of the main beam 24 (not shown). When the oil cylinder 41 at one end provides thrust, the oil cylinder 41 at the other end provides tension.

[0066] Embodiment 3

[0067] A swing mechanism for a wind turbine blade sling according to the present invention is different from that of Embodiment 1. In this embodiment, the guide beam 23 is an integral structure and is arranged along the center line of the main beam 24. Among the positions of the main beam 24 on both sides of the guide beam 23, at least one side is used to arrange at least one oil cylinder 41. All the oil cylinders 41 are located at one end of the main beam 24 (as shown in Figure 8 ), and provide thrust simultaneously or provide tension simultaneously, or oil cylinders 41 are respectively provided at both ends of the main beam 24 (not shown). When the oil cylinder 41 at one end provides thrust, the oil cylinder 41 at the other end provides tension.

[0068] Embodiment 4

[0069] A swing mechanism for a wind turbine blade sling according to the present invention is different from Embodiments 1 to 3. In this embodiment, the linear drive component uses a cylinder system to replace the oil cylinder system therein (not shown), and the connection and arrangement methods of the cylinder system remain unchanged.

[0070] Embodiment 5

[0071] As shown in Figure 9 , a swing mechanism for a wind turbine blade sling according to the present invention is different from Embodiments 1 to 4. In this embodiment, the linear drive component uses a lead screw system to replace the oil cylinder system or the cylinder system therein.

[0072] Specifically, the lead screw system includes a lead screw 51 and a drive component 53. The drive component 53 includes a motor (in this embodiment, the motor is an ordinary motor), a reducer, and a coupling. The lead screw 51 is fixed on the top surface of the main beam 24 through a second mounting seat 52. The drive component 53 is also fixed on the top surface of the main beam 24. The motor is connected to the reducer, the reducer is connected to the coupling, the coupling is connected to the lead screw 51, the lead screw 51 is threadedly connected to a lead screw nut, and the lead screw nut serves as a moving part, that is, the rotating shaft 3 is rotatably connected to the lead screw nut. The lead screw 51 can adopt a ball screw, the motor can adopt a servo motor, and a bearing is provided between the second mounting seat 52 and the lead screw 51.

[0073] In another specific manner, the rotating shaft 3 directly serves as a moving part, and a threaded through hole is arranged radially along the rotating shaft 3. The lead screw 51 is threadedly connected to the rotating shaft 3, and the rotation of the lead screw 51 causes the rotating shaft 3 to move along the lead screw.

[0074] In this embodiment, the motor can also adopt a variable-frequency motor. When a variable-frequency motor is adopted, the reducer can be cancelled, and the motor is directly connected to the coupling.

[0075] The rotation of the motor drives the rotation of the lead screw 51, and the lead screw 51 drives the moving part to move along the lead screw 51, so as to drive the rotating shaft 3 to perform a linear reciprocating motion.

[0076] Embodiment 6

[0077] A swinging mechanism of a wind turbine blade sling according to the present invention is different from those in Embodiments 1 to 5 in that, in this embodiment, the linear driving component uses a gear-rack system to replace the oil cylinder system or the air cylinder system or the lead screw system (not shown).

[0078] Specifically, the gear-rack system includes a gear meshing with the rack, and a motor (the motor is a general motor in this embodiment). The gear and the motor are arranged on the main beam 24. The rack is slidably connected to the main beam 24. The motor is connected to a reducer, the reducer is connected to a coupling, the coupling is connected to the shaft of the gear, the rack is connected to a moving member, and the moving member is rotatably connected to the rotating shaft 3. The motor can be a servo motor.

[0079] In this embodiment, the motor can also be a variable-frequency motor. When a variable-frequency motor is used, the reducer can be cancelled, and the motor is directly connected to the coupling.

[0080] By the rotation of the motor to drive the rotation of the gear, and the gear drives the linear movement of the rack, so as to drive the rotating shaft 3 to make a linear reciprocating movement.

[0081] Embodiment 7

[0082] A swinging mechanism of a wind turbine blade sling according to the present invention is different from those in Embodiments 1 to 6 in that, in this embodiment, the linear driving component uses a sprocket-chain system to replace the oil cylinder system or the air cylinder system or the lead screw system or the gear-rack system (not shown).

[0083] The sprocket-chain system includes a sprocket cooperating with the chain, and a motor (the motor is a general motor in this embodiment). The sprocket and the motor are arranged on the main beam 24. The motor is connected to a reducer, the reducer is connected to a coupling, the coupling is connected to the shaft of the sprocket, the chain is directly connected to the rotating shaft 3, and the motor can be a servo motor.

[0084] In this embodiment, the motor can also be a variable-frequency motor. When a variable-frequency motor is used, the reducer can be cancelled, and the motor is directly connected to the coupling.

[0085] By the rotation of the motor to drive the rotation of the sprocket, and the sprocket drives the rotation of the chain, so as to drive the rotating shaft 3 to make a linear reciprocating movement.

[0086] Embodiment 8

[0087] A swinging mechanism of a wind turbine blade sling according to the present invention is different from those in Embodiments 1 to 7 in that, in this embodiment, the linear driving component is arranged on the suspension rod 1 (not shown).

[0088] Embodiment 9

[0089] A swing mechanism of a wind turbine blade hoist according to the present invention is different from those in Embodiments 1 to 7. In this embodiment, linear driving components (not shown) are respectively provided on the suspension rod 1 and the suspension beam 2.

[0090] Embodiment 10

[0091] A swinging method of a swing mechanism of a wind turbine blade hoist according to the present invention uses the swing mechanism of a wind turbine blade hoist according to any one of Embodiments 1 to 9. The method includes the following steps:

[0092] The moving end of the linear driving component drives the rotating shaft 3 to move linearly, causing the main pushing slider 12 to move in the main pushing chute 11, and at the same time causing the guide rail slider 22 to move in the guide rail chute 21, pushing the suspension beam 2 and the suspension rod 1 to rotate around the hinge point, that is, driving the blade 01 to rotate in the vertical plane.

[0093] The swinging method of the swing mechanism of a wind turbine blade hoist described in this embodiment forms a connecting rod slider mechanism through the linear driving component, the rotating shaft 3, the main pushing chute 11, the main pushing slider 12, the guide rail chute 21 and the guide rail slider 22. By driving the main pushing slider 12 and the guide rail slider 22 to move in the corresponding chutes through the linear driving component, the suspension rod 1 and the suspension beam 2 are pushed to rotate around the hinge point, so as to achieve the purpose of changing the angle between the suspension rod 1 and the suspension beam 2, realizing the adjustment of the inclination angle of the single-blade hoist, that is, realizing the swinging function; when the guide rail slider 22 moves in the guide rail chute 21, it is mainly affected by the frictional force along the chute direction and mainly affected by the component force of the main pushing slider 12 in this direction along the normal direction of the chute, and the acting force is small. The main pushing slider 12 is installed in the main pushing chute 11 and is mainly affected by the pushing and pulling force of the linear driving component when reciprocating in the main pushing chute 11. The force required to change the angle between the suspension rod 1 and the suspension beam 2 is small. This connecting rod slider mechanism can select a linear driving component with a small driving force for a single unit, and has good economy, reliability and safety.

[0094] Embodiment 11

[0095] A wind turbine blade hoist according to the present invention includes a clamping mechanism 6, a guy wire mechanism 7, an equipment platform 8 and a swing mechanism of a wind turbine blade hoist according to any one of Embodiments 1 to 9. The clamping mechanism 6 and the guy wire mechanism 7 are both arranged on the suspension beam 2. The clamping mechanism 6 is connected to the equipment platform 8. The clamping mechanism 6 is used for clamping the blade 01, and the guy wire mechanism 7 is used for anchoring the blade 01. A power device and a control device are arranged on the equipment platform 8.

[0096] The wind turbine blade hoist according to the present invention can realize the swinging rotation between the suspension rod 1 and the suspension beam 2 by using a single linear driving component with a small driving force through a connecting rod slider mechanism, and adjust the size of the angle between the two, which has good economy, reliability and safety. The hoist has a simple structure, is easy to use, and has good effects.

[0097] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A swinging mechanism for a fan blade sling, comprising a suspension rod (1) and a suspension beam (2) hinged thereto, characterized in that, The suspension rod (1) is provided with a main push chute (11), a main push slider (12) is slidably engaged in the main push chute (11), the suspension beam (2) is provided with a guide rail chute (21), a guide rail slider (22) is slidably engaged in the guide rail chute (21), the main push chute (11) and the guide rail chute (21) are arranged in a cross manner, the suspension beam (2) is provided with a linear driving component, the moving end of the linear driving component is rotatably connected to a rotating shaft (3) and can drive the rotating shaft (3) to reciprocate linearly, the rotating shaft (3) is rotatably connected to the main push slider (12) and the guide rail slider (22), the suspension beam (2) includes a main beam (24) and a guide beam (23) connected to the top thereof, the guide rail chute (21) is arranged between the guide beam (23) and the main beam (24), the suspension rod (1) is hinged to the middle of the main beam (24), the linear driving component is arranged on the top of the main beam (24), and the moving direction of the moving end of the linear driving component coincides with the arrangement direction of the guide rail chute (21).

2. The swinging mechanism of the wind turbine blade sling according to claim 1, characterized in that, The direction in which the moving end of the linear driving component drives the rotating shaft (3) to move linearly is parallel to the arrangement direction of the main push chute (11) or the arrangement direction of the guide rail chute (21).

3. The swinging mechanism of the wind turbine blade sling according to claim 1, characterized in that First wear-resistant plates (121) are respectively arranged on the two surfaces of the main push slider (12) that cooperate with the main push chute (11), and second wear-resistant plates (221) are respectively arranged on the two surfaces of the guide rail slider (22) that cooperate with the guide rail chute (21).

4. The swinging mechanism of the fan blade hoist according to claim 1, characterized in that, A bearing (31) is arranged between the rotating shaft (3) and the main push slider (12).

5. The swing mechanism of the wind turbine blade sling according to claim 1, characterized in that, The guide beam (23) includes a left box girder (231) and a right box girder (232) arranged opposite thereto, there is an accommodation space (234) between the left box girder (231) and the right box girder (232), the linear driving component can be arranged in the accommodation space (234), at least one linear driving component is arranged on the top of the main beam (24), and the linear driving component is arranged on at least one side of the left box girder (231) and / or at least one side of the right box girder (232).

6. The swinging mechanism of the wind turbine blade sling according to claim 5, characterized in that, The left box girder (231) and the right box girder (232) are connected into one body by a plurality of connecting beams (233).

7. The swinging mechanism of the wind turbine blade sling according to claim 1, characterized in that, The guide beam (23) is arranged in the middle of the main beam (24), at least one linear driving component is arranged on the top of the main beam (24), and the linear driving component is arranged on at least one side of the guide beam (23).

8. The swing mechanism of the fan blade sling according to claim 1, characterized in that, All the linear driving components are arranged at one end of the main beam (24) or all the linear driving components are respectively arranged at both ends of the main beam (24).

9. The swinging mechanism of the wind turbine blade sling according to claim 1, characterized in that, A suspension hole (14) is arranged at the top of the suspension rod (1), a connection hole (13) is arranged at the bottom of the suspension rod (1), the suspension rod (1) and the suspension beam (2) are hinged through the connection hole (13), and there is an included angle α between the connection line of the connection hole (13) and the suspension hole (14) and the axis of the main push chute (11), and the angle range of α is 5° - 45°.

10. The swinging mechanism of the wind turbine blade sling according to claim 9, characterized in that, The angle range of α is 10° - 20°.

11. The swing mechanism of the fan blade sling according to claim 10, characterized in that, The angular range of α is 15° - 20°.

12. The swing mechanism of the wind turbine blade spreader according to any one of claims 1-11, characterized in that, The linear drive component is an oil cylinder system, a cylinder system, a lead screw system, a rack and pinion system or a sprocket and chain system. The telescopic end of the oil cylinder system or the cylinder system is rotatably connected to the rotating shaft (3), and the moving member of the lead screw system, the rack and pinion system or the sprocket and chain system is connected to the rotating shaft (3).

13. A swinging method for a swinging mechanism of a fan blade sling, characterized in that, Using the swing mechanism of the wind turbine blade sling according to any one of claims 1 - 12, the method comprises the following steps: The moving end of the linear drive component drives the rotating shaft (3) to move linearly, so that the main push slider (12) moves in the main push chute (11), and at the same time, the guide rail slider (22) moves in the guide rail chute (21), pushing the hanging beam (2) and the hanging rod (1) to rotate around the hinge point.

14. A wind turbine blade sling, characterized in that, Comprising a clamping mechanism (6), a guy wire mechanism (7) and the swing mechanism of the wind turbine blade sling according to any one of claims 1 - 12, the clamping mechanism (6) and the guy wire mechanism (7) are both arranged on the hanging beam (2), the clamping mechanism (6) is used for clamping the blade (01), and the guy wire mechanism (7) is used for anchoring the blade (01).

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