Blade hoisting structure of wind driven generator

Abstract

The utility model discloses a wind driven generator blade hoisting structure which comprises a hub, three blades detachably connected to the hub and a protective cover, a control mechanism is arranged in the protective cover and comprises a fixed disc, three tightening and releasing mechanisms are fixedly connected to the outer wall of the fixed disc, and the three tightening and releasing mechanisms are fixedly connected to the outer wall of the fixed disc. The tightening and releasing mechanism comprises an equipment shell, a wire spool and a movable wheel, wherein the wire spool and the movable wheel are rotationally connected to the upper end and the lower end of the inner wall of the equipment shell correspondingly, and steel cables are wound around the outer side of the wire spool and the outer side of the movable wheel for fixed connection. By means of the equipment, when the wind driven generator blade is installed, an additional auxiliary sling cart does not need to be used, so that the aim of saving the hoisting cost can be achieved on the premise of reducing environment limitation, meanwhile, a steel cable in the tightening and releasing mechanism can be protected in the process of hoisting the wind driven generator blade, and the hoisting efficiency of the wind driven generator blade is improved. Therefore, the service life of equipment is prolonged, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a wind power generator blade hoisting structure. Background Art

[0002] With the increasing installed capacity of wind turbines and the increasing service life of wind turbines, more and more units need to have blades replaced and installed. During the implementation of the wind turbine installation process, the construction technologies such as large-scale equipment hoisting construction technology, large-scale equipment unit assembly technology and generator unit installation technology are combined to closely link the installation and construction technologies. At the same time, the project has also achieved good social and economic benefits, and provided reference and reference for the development of new energy equipment installation technology.

[0003] However, at present, wind turbines generally use crawler cranes and an auxiliary crane for auxiliary lifting to complete blade installation and replacement. However, the use of multiple large-scale lifting equipment often results in high lifting costs and is subject to environmental conditions.

[0004] Therefore, the utility model provides a wind turbine blade hoisting structure to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a wind turbine blade hoisting structure, which solves the above-mentioned problem of only needing to use one crane to hoist and install the wind turbine blades, thereby saving hoisting costs while reducing environmental constraints.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a wind turbine blade lifting structure, including a hub, three blades detachably connected to the hub and a protective cover, a control mechanism is arranged inside the protective cover, the control mechanism includes a fixed disk, three tightening and releasing mechanisms are fixedly connected to the outer wall of the fixed disk, the tightening and releasing mechanism includes a device housing and a winding disk and a movable wheel rotatably connected to the upper and lower ends of the inner wall of the device housing respectively, the outer sides of the winding disk and the movable wheel are both wrapped with steel cables for fixed connection, and a movable disk is arranged on the steel cable between the winding disk and the movable wheel, the bottom of the movable disk is movably connected with a movable hook, and the movable hook is movably connected with a hanging rope for fixing the blades.

[0007] Preferably: the fixing plate is provided with three fixing strips, the inner wall of the protective cover is provided with slots matching the three fixing strips, and the front end of the fixing strip is fixedly connected with a snap-fit ​​assembly that can be snap-fitted and fixed with the protective cover.

[0008] Preferably: a servo motor is fixedly connected to the top of the device housing, and the output shaft of the servo motor is fixedly connected to the winding reel inside the device housing, a detection component is fixedly connected to the servo motor, and the detection component is electrically connected to the servo motor.

[0009] Preferably, a hanging ring for connecting with a lifting hook is fixedly connected to the upper side of the fixing plate, and a ring for connecting with a crane is fixedly connected to the other end of the lifting hook.

[0010] Preferably, the inner wall of the hanging rope is smoothly arranged, and the movable hook is rotatably connected to the bottom of the movable plate.

[0011] Preferably, the device housing and the fixing clips are arranged equidistantly on the outer wall of the fixing disk with the center of the fixing disk as the center.

[0012] The utility model provides a wind turbine blade hoisting structure. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The wind turbine blade hoisting structure sends an electrical signal to the servo motor through a detection component on the fixed plate, so that a blade on the hub is gradually released from the hoisting restraint, so that the hub and the other two blades can rotate inside the two hanging ropes, thereby making it possible to turn the hub and the blades from a horizontal state to a vertical state, so that no additional auxiliary hoisting vehicle is needed when installing the hub and the blades, thereby achieving the goal of reducing environmental constraints and saving hoisting costs.

[0014] (2) The wind turbine blade hoisting structure has a locking assembly fixedly connected to the front end of the fixing clip that can be locked and fixed with the slot on the protective cover, so that the protective cover can be installed on the control mechanism through the fixing clip on the fixing plate, so that the steel cable in the tightening and releasing mechanism can be protected during the process of hoisting the hub and the blade, thereby extending the service life of the equipment and avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0016] Figure 2 It is a split stereogram of the internal structure of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the external structure of the utility model in working state;

[0018] Figure 4 This is a three-dimensional diagram of the internal structure of the utility model in working state

[0019] Figure 5 The utility model Figure 4 Magnified view of point A in .

[0020] In the figure, 1 is the hub; 2 is the blade; 3 is the protective cover; 4 is the lifting hook; 5 is the control mechanism; 51 is the fixed plate; 52 is the fixed clip; 53 is the hanging ring; 54 is the servo motor; 55 is the detection component; 6 is the tightening and releasing mechanism; 61 is the equipment housing; 62 is the winding drum; 63 is the movable wheel; 64 is the movable plate; 65 is the movable hook; 66 is the hanging rope. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figures 1 to 5A wind turbine blade hoisting structure includes a hub 1, three blades 2 detachably connected to the hub 1, and a protective cover 3. A control mechanism 5 is arranged inside the protective cover 3. The control mechanism 5 includes a fixed disk 51. Three tightening and releasing mechanisms 6 are fixedly connected to the outer wall of the fixed disk 51. The tightening and releasing mechanism 6 includes an equipment housing 61 and a winding disk 62 and a movable wheel 63 which are rotatably connected to the upper and lower ends of the inner wall of the equipment housing 61 respectively. The outer sides of the winding disk 62 and the movable wheel 63 are both wound with steel cables for fixed connection. A movable disk 64 is arranged on the steel cable between the winding disk 62 and the movable wheel 63. A movable hook 65 is movably connected to the bottom of the movable disk 64, and the movable hook 65 is A hanging rope 66 for fixing the blade 2 is movably connected, a servo motor 54 is fixedly connected to the top of the equipment housing 61, and the output shaft of the servo motor 54 is fixedly connected to the winding drum 62 inside the equipment housing 61, a detection component 55 is fixedly connected to the servo motor 54, and the detection component 55 is electrically connected to the servo motor 54, the hanging rope 66 is passed through the bottom of the blade 2 respectively, and the hanging rope 66 is fixedly connected to the movable hook 65, and at the same time, since the blade 2 is generally placed on the blade placement rack, it is more convenient to pass the hanging rope 66 from the bottom of the blade 2, and at the same time, through the self-locking mechanism on the movable hook 65 (here refers to the hook that generally hangs heavy objects in the prior art generally has The self-locking mechanism (which is a common prior art and will not be described in detail here) locks the hanging rope 66 on the movable hook 65 to prevent the hanging rope 66 from falling off the movable hook 65 during the lifting process. At this time, the movable wheels 63 at the three positions are rotated to tighten the steel cable, thereby driving the corresponding movable hooks 65 to move up, ensuring that the three movable hooks 65 are located in the same horizontal plane, avoiding the deviation of one side of the blade 2 during the lifting process, thereby causing the end of the blade 2 to contact the ground and cause wear of the blade 2. At the same time, the output end of the crane is fixedly connected to the hanging ring 53 through the lifting hook 4. At this time, the crane is started. When the hub 1 and the blade 2 are lifted to a certain height, the hub 1 on the hub 1 is The three blades 2 will not come into contact with the ground. When a detection component 55 on the fixed plate 51 detects that the required height has been reached, the detection component 55 sends an electrical signal to the servo motor 54, causing the winding drum 62 inside the equipment housing 61 to rotate and gradually release the steel cable, so that the lifting restraint of one blade 2 on the hub 1 is gradually released, so that the hub 1 and the other two blades 2 can rotate inside the two hanging ropes 66, thereby making it possible to turn the hub 1 and the blades 2 from a horizontal state to a vertical state, so that there is no need to use an additional auxiliary lifting vehicle when installing the hub 1 and the blades 2, thereby achieving the goal of reducing environmental constraints and saving lifting costs.

[0024] Embodiment 2:

[0025] See also Figures 1 to 5The present embodiment provides a technical solution based on the first embodiment: a fixed card strip 52 is arranged on the fixed plate 51, and there are three fixed card strips 52, and a card slot matching the three fixed card strips 52 is opened on the inner wall of the protective cover 3, and the front end of the fixed card strip 52 is fixedly connected with a card assembly that can be fixed with the protective cover 3, and the upper part of the fixed plate 51 is fixedly connected with a hanging ring 53 for connecting with the lifting hook 4, and the other end of the lifting hook 4 is fixedly connected with a ring for connecting to the crane, the inner wall of the hanging rope 66 is smoothly set, and the movable hook 65 is rotatable. It is dynamically connected to the bottom of the movable disk 64, and the equipment housing 61 and the fixed clip strip 52 are equidistantly arranged on the outer wall of the fixed disk 51 with the center of the fixed disk 51 as the center. Since the front end of the fixed clip strip 52 is fixedly connected with a locking component that can be locked and fixed with the slot on the protective cover 3, the protective cover 3 can be installed on the control mechanism 5 through the fixed clip strip 52 on the fixed disk 51, so that the steel cable in the tightening and releasing mechanism 6 can be protected during the hoisting of the hub 1 and the blade 2, thereby extending the service life of the equipment and avoiding the occurrence of safety accidents.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] Working principle: When working, firstly, the three blades 2 are fixedly connected to the wheel hub 1 respectively, and then the hanging ropes 66 are passed through the bottom of the blades 2 respectively, and the hanging ropes 66 are fixedly connected to the movable hooks 65. At the same time, since the blades 2 are generally placed on the blade placement frame, it is more convenient to pass the hanging ropes 66 through the bottom of the blades 2. At the same time, the hanging ropes 66 are locked on the movable hooks 65 through the self-locking mechanism on the movable hooks 65 to prevent the hanging ropes 66 from falling off from the movable hooks 65 during the lifting process. At this time, the movable wheels 63 at the three positions are rotated to tighten the steel cables, thereby driving the corresponding movable hooks 65 to move up. Ensure that the three movable hooks 65 are located in the same horizontal plane to avoid the blade 2 on one side from being offset during the hoisting process, thereby causing the end of the blade 2 to contact the ground and cause wear of the blade 2. At the same time, the output end of the crane is fixedly connected to the hanging ring 53 through the hoisting hook 4. At this time, the crane is started. When the hub 1 and the blade 2 are hoisted to a certain height (this height refers to the height required to turn the hub 1 and the blade 2 from a horizontal state to a state perpendicular to the ground), the three blades 2 on the hub 1 will not contact the ground. When a detection component 55 on the fixed plate 51 detects that the height above the ground required for the blade 2 to flip has been reached, When the detection component 55 is set to a certain value (the detection component 55 refers to, for example, a NADO laser distance sensor, model NDRA91, which can accurately measure the distance of the lifting mechanism from the ground), the detection component 55 sends an electrical signal to the servo motor 54 (the detection component 55 and the servo motor 54 are simply connected by circuits, which is common knowledge for those skilled in the art), so that the winding drum 62 inside the device housing 61 rotates and the steel cable is gradually released, so that the lifting restraint of one blade 2 on the hub 1 is gradually released, so that the hub 1 and the other two blades 2 can rotate inside the two hanging ropes 66, so that the hub 1 and the blades 2 can be lifted. By changing from a horizontal state to a vertical state, there is no need to use an additional auxiliary lifting vehicle when installing the hub 1 and the blades 2, thereby achieving the goal of reducing environmental constraints and saving lifting costs. At the same time, since the front end of the fixed clip 52 is fixedly connected with a locking assembly that can be locked and fixed with the slot on the protective cover 3, the protective cover 3 can be installed on the control mechanism 5 through the fixed clip 52 on the fixed plate 51, so that during the lifting process of the hub 1 and the blades 2, the steel cable in the tightening release mechanism 6 can be protected, thereby extending the service life of the equipment and avoiding the occurrence of safety accidents.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade hoisting structure, comprising a hub (1), three blades (2) detachably connected to the hub (1) and a protective cover (3), characterized in that: A control mechanism (5) is arranged inside the protective cover (3), and the control mechanism (5) comprises a fixed disk (51). Three tightening and releasing mechanisms (6) are fixedly connected to the outer wall of the fixed disk (51). The tightening and releasing mechanism (6) comprises an equipment housing (61) and a winding disk (62) and a movable wheel (63) which are rotatably connected to the upper and lower ends of the inner wall of the equipment housing (61), respectively. The outer sides of the winding disk (62) and the movable wheel (63) are both wound with steel cables for fixed connection, and a movable disk (64) is arranged on the steel cable between the winding disk (62) and the movable wheel (63). The bottom of the movable disk (64) is movably connected to a movable hook (65), and the movable hook (65) is movably connected to a hanging rope (66) for fixing the blade (2).

2. A wind turbine blade hoisting structure according to claim 1, characterized in that: The fixing plate (51) is provided with three fixing clips (52), the inner wall of the protective cover (3) is provided with clip grooves matching the three fixing clips (52), and the front end of the fixing clips (52) is fixedly connected with a clip assembly that can be clipped and fixed with the protective cover (3).

3. A wind turbine blade hoisting structure according to claim 1, characterized in that: A servo motor (54) is fixedly connected to the top of the device housing (61), and the output shaft of the servo motor (54) is fixedly connected to a winding drum (62) inside the device housing (61). A detection component (55) is fixedly connected to the servo motor (54), and the detection component (55) is electrically connected to the servo motor (54).

4. The wind turbine blade hoisting structure according to claim 1, characterized in that: A hanging ring (53) for connecting to a lifting hook (4) is fixedly connected to the upper side of the fixing plate (51), and a circular ring for connecting to a crane is fixedly connected to the other end of the lifting hook (4).

5. The wind turbine blade hoisting structure according to claim 1, characterized in that: The inner wall of the hanging rope (66) is smoothly arranged, and the movable hook (65) is rotatably connected to the bottom of the movable plate (64).

6. A wind turbine blade hoisting structure according to claim 1, characterized in that: The device housing (61) and the fixed clip strip (52) are arranged equidistantly on the outer wall of the fixed disk (51) with the center of the fixed disk (51) as the center.

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