An automatic hoisting device and hoisting method for a wind power generation unit

Abstract

The present invention relates to the technical field of wind turbine installation equipment, and specifically proposes an automatic hoisting device and a hoisting method for a wind turbine; used for hoisting a cabin in a wind turbine, the device comprises a hanger, a plurality of hoisting ropes detachably mounted on the hanger, a plurality of umbrella support members mounted one-to-one on the plurality of hoisting ropes, and a plurality of pressing mechanisms for driving the umbrella support members to press downward; the hoisting device provided by the present invention suppresses the swing of the cabin during the hoisting process, improves the stability and safety of the hoisting operation, protects the cabin structure, facilitates the docking installation between the cabin and the tower, and indirectly improves the efficiency of the hoisting operation.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine installation equipment, and specifically provides an automatic hoisting equipment and a hoisting method for a wind turbine. Background Art

[0002] A wind turbine generally refers to a wind generator, which mainly consists of a tower, a nacelle, a wind wheel, and blades, etc. The tower is installed on a foundation, the wind wheel and the blades need to be assembled on the nacelle, and the nacelle needs to be assembled and fixed at the top of the tower; the height of the tower is usually at least more than one hundred meters, and can even reach more than two hundred meters. When installing a wind turbine, it is inevitable to hoist the nacelle, the wind wheel, and the blades one by one. Among them, the nacelle is the main structure for converting wind energy into electrical energy. In addition to the outer shell, the nacelle usually has core mechanical components including a transmission system, a generator, a braking system, a cooling system, and a control system, etc. assembled inside the outer shell of the nacelle. And before hoisting, the mechanical components in the nacelle are usually pre-assembled in the nacelle, and the overall mass is relatively large.

[0003] Under the existing technology, professional slings are generally designed for hoisting the nacelle, and the existing slings basically use the cooperation of multiple lifting ropes for hoisting. And the hoisting of the nacelle belongs to high-altitude hoisting operations. When there is wind in the air during the hoisting process, the existing sling structure will inevitably cause the nacelle to swing and shake with the wind. Moreover, the greater the wind force, the greater the swing amplitude. The swing of the nacelle during the hoisting process will at least cause the following problems: (1) There will be a greater hoisting safety hazard with the swing with the wind, which may cause collisions between the nacelle and the tower or other structures during the hoisting process, resulting in equipment damage and casualties, and prolonging the hoisting time and the risk of operation.

[0004] (2) The swing of the nacelle will increase the difficulty of docking and fixing between the nacelle and the tower, affecting the installation accuracy.

[0005] (3) The swing of the nacelle may cause collisions and frictions between the nacelle and the lifting ropes, resulting in deformation and damage of the nacelle structure, and at the same time, it will also accelerate the structural damage of the lifting ropes.

[0006] (4) The swing of the nacelle also increases the difficulty of the hoisting operation for the hoisting personnel. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides an automatic hoisting equipment and a hoisting method for a wind turbine to solve the problems mentioned in the above background art.

[0008] To achieve the above object, the present invention adopts the following technical solutions: An automatic hoisting device for a wind power generation set, which is used to hoist the nacelle in a wind turbine generator set. The device includes: a hanging frame; a plurality of suspension ropes, detachably installed on the hanging frame; during hoisting, they vertically pass through a plurality of avoidance holes on the nacelle housing one by one; a plurality of umbrella support members, assembled on the plurality of suspension ropes one by one, and used to insert into the corresponding avoidance holes on the nacelle housing during hoisting; the umbrella support member includes an inner support frame slidably installed on the suspension rope and a plurality of flexible clamping plates detachably installed on the inner support frame. The plurality of flexible clamping plates are circumferentially distributed around the inner support frame, and the side clamping radius formed by the plurality of flexible clamping plates gradually decreases from top to bottom. The inner support frame provides independent elastic support for each flexible clamping plate; and a plurality of pressing mechanisms, cooperating with the plurality of umbrella support members, used to drive the umbrella support members to slide down along the suspension rope, so that the umbrella support members are inserted into and pressed tightly in the corresponding avoidance holes, and the flexible clamping plates are in an adaptive flexible clamping contact with the avoidance holes.

[0009] Preferably, the inner support frame includes: a sliding sleeve, slidably sleeved on the suspension rope; a plurality of skeleton plates, all hinged at a position near the bottom end of the sliding sleeve; a plurality of flexible clamping plates are detachably installed on the plurality of skeleton plates one by one; and a plurality of stay cables, all hinged at a position near the top end of the sliding sleeve, and movably connected to the plurality of skeleton plates one by one. The stay cables are used to provide elastic support for the skeleton plates.

[0010] Preferably, the stay cable includes: a sliding seat, slidably fitted on the skeleton plate along the length direction of the skeleton plate; and at least one spring, one end of the spring is fixed on the sliding seat, and the other end is hinged at a position near the top end of the sliding sleeve.

[0011] Preferably, a positioning groove is formed on the skeleton plate extending from the end far from the hinge along the length direction, and the positioning groove is closed at the end near the hinge of the skeleton plate; a positioning key is provided on the flexible clamping plate for plugging and cooperating with the positioning groove, and the flexible clamping plate is also provided with at least one fixing sleeve flexibly sleeved on the skeleton plate.

[0012] Preferably, each pressing mechanism is correspondingly connected to two umbrella support members; the pressing mechanism includes: a slider, horizontally slidably installed on the hanging frame; two push-pull rods, one end of which is symmetrically and horizontally rotatably installed on both sides of the slider; two connecting blocks, fixedly installed at the top ends of the sliding sleeves on the two umbrella support members one by one, and the other ends of the two push-pull rods are correspondingly hinged on the two connecting blocks; and a locking member, assembled on the slider, used to lock the slider on the hanging frame.

[0013] Preferably, the hanging frame includes: a main lifting beam, on which the slider is horizontally slidably installed; a plurality of groups of side lifting beams, distributed along the length direction of the main lifting beam. Each group includes two side lifting beams, and the two side lifting beams in each group are symmetrically fixed on both sides of the main lifting beam; a suspension rope is installed on each side lifting beam.

[0014] Preferably, a guide rail plate is provided at the top of the main lifting beam, and the slider is slidably fitted on the guide rail plate, and a plurality of lifting holes are provided on the guide rail plate.

[0015] Preferably, the locking member is a locking screw threadedly fitted on the slider, and the locking screw is vertically penetrated through the slider. When the locking screw presses against the top of the guide rail plate, the slider is locked.

[0016] In addition, the present invention also provides an automatic hoisting method for a wind power generation unit, including the following steps: S1. Connect the hoisting device to the hoisting end of the crane.

[0017] S2. Place the nacelle steadily on the ground, vertically pass the hoisting rope through the corresponding avoidance hole on the nacelle housing, and extend it into the nacelle.

[0018] S3. Hook the hoisting end of the hoisting rope at the hoisting point position provided in the nacelle.

[0019] S4. Lift the nacelle to tighten the hoisting rope.

[0020] S5. Insert and press the umbrella support member into the avoidance hole through the pressing mechanism.

[0021] S6. Hoist the nacelle to the top of the tower. After the nacelle is fixedly installed, remove and separate the hoisting device from the nacelle.

[0022] The above technical solution has the following advantages or beneficial effects: The present invention provides an automatic hoisting device for a wind power generation unit, which can perform hoisting operations on the nacelle of the wind power generation unit. On the basis of the existing hoisting device, an umbrella support member for isolation, clamping, buffering and positioning is provided between the hoisting rope and the nacelle. Through the cooperative positioning and clamping of a plurality of umbrella support members at the avoidance holes of the nacelle housing, the umbrella support members indirectly form the support points between the hoisting rope and the nacelle, improving the integrity between the nacelle and the hoisting device and restricting the freedom of the nacelle to swing relative to the hoisting device. In addition, the independent adaptive clamping contacts of the plurality of flexible clamping plates in the umbrella support member ensure multi-point support, and the umbrella support member has a self-damping function, which can absorb the impact force generated during the swinging of the nacelle, weaken the swinging amplitude, and form an isolation protection between the nacelle and the hoisting rope to avoid direct collision and friction between the nacelle and the hoisting rope. In summary, the hoisting device provided by the present invention suppresses the swinging during the hoisting of the nacelle, improves the stability and safety of the hoisting operation, protects the nacelle structure, facilitates the docking and installation between the nacelle and the tower, and indirectly improves the efficiency of the hoisting operation. Description of the Drawings

[0023] The present invention, its features, shape and advantages will become more obvious by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale deliberately, and the emphasis is on showing the gist of the present invention.

[0024] Figure 1 It is a schematic three-dimensional structure diagram of an automatic hoisting device for a wind power generation unit provided by the present invention.

[0025] Figure 2 It is a side view of an automatic hoisting device for a wind power generation unit provided by the present invention.

[0026] Figure 3 It is a schematic three-dimensional structure diagram of the suspension bracket.

[0027] Figure 4 It is a schematic three-dimensional structure diagram of the umbrella support member, the suspension rope and the pressing-in mechanism assembled together.

[0028] Figure 5 It is a schematic three-dimensional structure diagram of the inner support framework.

[0029] Figure 6 It is a schematic three-dimensional structure diagram of the flexible clamping plate.

[0030] Figure 7 It is a schematic three-dimensional structure diagram of the nacelle.

[0031] Figure 8 It is a working state diagram of the hoisting device during hoisting.

[0032] Figure 9 It is a method flow chart of an automatic hoisting method for a wind power generation unit provided by the present invention.

[0033] In the figure: 1. Suspension bracket; 11. Main hoisting beam; 111. Guide rail plate; 112. Hoisting hole; 12. Side hoisting beam; 121. Hoisting hole seat; 2. Suspension rope; 21. Hoisting ring; 3. Umbrella support member; 31. Sliding sleeve; 311. Hinge seat end; 32. Skeleton plate; 321. Positioning groove; 322. Slide groove 322; 33. Diagonal tension member; 331. Slide block; 332. Spring; 333. Series pin; 34. Flexible clamping plate; 341. Positioning key; 342. Fixed sleeve; 4. Pressing-in mechanism; 41. Slide block; 42. Locking screw; 43. Push-pull rod; 44. Connecting block; 5. Nacelle; 51. Avoidance hole. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0035] To enable those skilled in the art of this technology to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] As Figure 1 , Figure 2 and Figure 7 shown, an automatic hoisting device for a wind power generation unit is used to hoist the nacelle 5 in the wind power generation unit. The device includes a suspension bracket 1, four suspension ropes 2 detachably installed on the suspension bracket 1, four umbrella support members 3 respectively assembled on the four suspension ropes 2, and two pressing mechanisms 4 for driving the umbrella support members 3. This device is used to cooperate with and be docked at the lifting end of an existing crane, and is used to hoist the nacelle 5 to the top of the wind turbine tower.

[0037] As Figure 1 , Figure 2 and Figure 3 shown, the suspension bracket 1 includes a main suspension beam 11 and two groups of side suspension beams 12 distributed along the length direction of the main suspension beam 11. The number of side suspension beams 12 in each group is two, and the two side suspension beams 12 in each group are symmetrically welded on both sides of the main suspension beam 11; a guide rail plate 111 is welded to the top end of the main suspension beam 11, and a plurality of suspension holes 112 are provided on the guide rail plate 111 along its length; two suspension hole seats 121 are welded on each side suspension beam 12. Four suspension ropes 2 are assembled on the four side suspension beams 12. In addition, two suspension ropes 2 for docking at the lifting end of the crane are also assembled on the guide rail plate 111. The suspension ropes 2 located on the guide rail plate 111 are not shown in the drawings. Both ends of the suspension rope 2 are assembled with detachable suspension rings 21. In this embodiment, the two suspension ropes 2 located on the guide rail plate 111 are respectively hooked at Figure 3 the second and fourth suspension holes 112 from left to right in

[0038] As Figure 7 shown, the nacelle 5 of the wind power generation unit is shown. The top cover of the nacelle 5 shell shown in the figure is not assembled. For the convenience of hoisting, two groups of avoidance holes 51 with different sizes are provided on the nacelle 5 shell. Two avoidance holes 51 in each group are distributed on both sides of the axis of the nacelle 5 shell. In addition, four suspension seats are fixed inside the nacelle 5 shell and are vertically and oppositely distributed one by one with the four avoidance holes 51. The structure of the suspension seats is similar to that of the suspension hole seats 121, and the suspension seats are not shown in the drawings.

[0039] When hoisting, the four lifting ropes 2 are vertically passed through the four avoidance holes 51 one by one and extend into the housing of the nacelle 5. The hoisting staff can enter the nacelle 5 and hook the hanging rings 21 at the lower ends of each lifting rope 2 on the corresponding hanging seats. The specific working state can be seen Figure 8 As shown, in the figure, the four lifting ropes 2 are vertically extending into the avoidance holes correspondingly.

[0040] As Figure 1 and Figure 4 shown, umbrella braces 3 are correspondingly assembled on the lifting ropes 2 located on each side lifting beam 12; the umbrella brace 3 includes an inner brace framework slidably installed on the lifting rope 2 and four flexible clamping plates 34 detachably installed on the inner brace framework; the inner brace framework includes a sliding sleeve 31 slidably sleeved on the lifting rope 2, hinge seat ends 311 are welded to both the upper and lower ends of the sliding sleeve 31, and four framework plates 32 are hinged to the hinge seat end 311 near the bottom end of the sliding sleeve 31; the four framework plates 32 are evenly distributed circumferentially around the sliding sleeve 31, and a stay bar 33 is connected between each framework plate 32 and the sliding sleeve 31. Slide grooves 322 extending in the length direction are opened on both sides of the framework plate 32. The stay bar 33 includes a sliding seat 331 slidably fitted between the two slide grooves 322 on the framework plate 32. Two springs 332 are welded on the sliding seat 331, and a series pin 333 is welded between the other ends of the two springs 332. The two springs 332 are hinged to the hinge seat end 311 near the top end of the sliding sleeve 31 through the series pin 333.

[0041] As Figure 4 、 Figure 6 and Figure 7 shown, the four flexible clamping plates 34 are correspondingly assembled on the four framework plates 32. The flexible clamping plates 34 are made of rubber material. Positioning grooves 321 extending in the length direction are opened on the framework plates 32 from the end far from the hinge, and the positioning grooves 321 are closed at the end near the hinge of the framework plates 32; positioning keys 341 are provided on the flexible clamping plates 34 and are in plug-in fit with the positioning grooves 321. The flexible clamping plates 34 are positioned and installed on the framework plates 32 through the plug-in fit between the positioning keys 341 and the positioning grooves 321. Two fixing sleeves 342 flexibly sleeved on the framework plates 32 are integrally formed on the flexible clamping plates 34. The four flexible clamping plates 34 are circumferentially distributed around the inner brace framework. The stay bar 33 keeps the flexible clamping plates 34 in an inclined state. The side clamping radius formed by the four flexible clamping plates 34 gradually decreases from top to bottom. The bottom end position surrounded by the four flexible clamping plates 34 can extend into the avoidance hole 51.

[0042] As Figure 1 、 Figure 2 and Figure 4As shown in the figure, in order to facilitate the adjustment of the position of the umbrella support member 3 on the suspension rope 2, two pressing mechanisms 4 are further assembled on the suspension frame 1. The two pressing mechanisms 4 are arranged corresponding to two groups of side suspension beams 12, and the pressing mechanism 4 is connected between two umbrella support members 3 on two side suspension beams 12 in a corresponding group; the pressing mechanism 4 includes a slider 41 horizontally slidably installed on the guide rail plate 111. Two push-pull rods 43 symmetrically distributed on both sides are horizontally rotatably installed on the slider 41. The push-pull rod 43 is an L-shaped rod member. Connecting blocks 44 are correspondingly welded to the tops of the sliding sleeves 31 of the two umbrella support members 3. The other ends of the two push-pull rods 43 are correspondingly hinged to the two connecting blocks 44; a locking screw 42 for locking the slider 41 on the guide rail plate 111 is also threadedly engaged on the slider 41. The locking screw 42 is vertically penetrated through the slider 41. When the locking screw 42 presses against the top of the guide rail plate 111, the slider 41 is locked. In order to ensure the reliability of the locking of the locking screw 42, serrated grooves are uniformly machined along the length direction at the top of the guide rail plate 111, and the pressing surface of the locking screw 42 is a serrated surface that can engage with the serrated grooves. When locking, the locking screw 42 is in an engaged state with the top of the guide rail plate 111.

[0043] After evenly hanging the four suspension ropes 2 on the engine nacelle 5, the engine nacelle 5 is slightly lifted from the ground by a crane, the suspension frame 1 is adjusted to be balanced, and the four suspension ropes 2 are all in a vertically taut state. Subsequently, the two groups of umbrella support members 3 are correspondingly pressed against the two groups of avoidance holes 51 through the two pressing mechanisms 4 in sequence. Specifically, loosen the locking screw 42, hold the two push-pull rods 43 and drive the slider 41 to slide, so as to synchronously push the two umbrella support members 3 to slide down along the suspension rope 2 through the push-pull rods 43, so that the umbrella support member 3 as a whole is inserted into the corresponding avoidance hole 51, and through continuous downward pressing adjustment, under the common support of the diagonal tension member 33 and the skeleton plate 32 on the flexible clamping plate 34, the four flexible clamping plates 34 are all independently and adaptively clamped and contacted at the edge of the avoidance hole 51 and pressed against the outer wall of the engine nacelle 5 shell. Subsequently, tighten the locking screw 42 to lock the slider 41, and the position of the umbrella support member 3 is fixed. Through the cooperative positioning and clamping of multiple umbrella support members 3 at the avoidance holes 51, the umbrella support members 3 indirectly form the support points between the suspension rope 2 and the engine nacelle 5, improving the integrity between the engine nacelle 5 and the hoisting equipment, restricting the freedom of the engine nacelle 5 to swing relative to the hoisting equipment. In addition, the independent and adaptive clamping contacts of multiple flexible clamping plates 34 in the umbrella support member 3 ensure multi-point support, and the umbrella support member 3 has a damping function by itself, which can absorb the impact force generated during the swinging of the engine nacelle 5, weaken the swinging amplitude, and form an isolation protection between the engine nacelle 5 and the suspension rope 2, avoiding direct collision and friction between the engine nacelle 5 and the suspension rope 2.

[0044] With the nacelle 5 being assisted and fixed by the umbrella support member 3, the nacelle 5 is hoisted and docked at the top of the tower by a crane. After the nacelle 5 is locked and fixed at the top of the tower by professionals, the lifting rope 2 is removed. The crane drives the lifting equipment to move vertically upward, and the clamping force between the umbrella support member 3 and the nacelle 5 is naturally released. The lifting rope 2 moves outwards from the avoidance hole 51, thus completing the separation between the lifting equipment and the nacelle 5 and completing the hoisting of the nacelle 5.

[0045] In addition, as Figures 1-9 shown, the present invention also provides an automatic hoisting method for a wind power generation set, including the following steps: S1. Dock the lifting equipment at the lifting end of the crane.

[0046] S2. Place the nacelle 5 stably on the ground, vertically pass the lifting rope 2 through the corresponding avoidance hole 51 on the outer shell of the nacelle 5 and extend it into the nacelle 5.

[0047] S3. Hook the hanging end of the lifting rope 2 at the hanging point position arranged inside the nacelle 5.

[0048] S4. Lift the nacelle 5 to make the lifting rope 2 taut.

[0049] S5. Insert and press the umbrella support member 3 into the avoidance hole 51 through the pressing mechanism 4.

[0050] S6. Hoist the nacelle 5 to the top of the tower. After the nacelle 5 is fixedly installed, remove and separate the lifting equipment from the nacelle 5.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0052] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0053] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic hoisting device for a wind power generation unit, which is used for hoisting the nacelle in a wind power generation set, and is characterized in that, The device includes: a suspension bracket; a plurality of suspension ropes, detachably installed on the suspension bracket; during hoisting, they vertically pass through a plurality of avoidance holes on the outer shell of the engine nacelle one by one; a plurality of umbrella support members, assembled on the plurality of suspension ropes one by one, and used to insert into the corresponding avoidance holes on the outer shell of the engine nacelle during hoisting; the umbrella support member includes an inner support framework slidably installed on the suspension rope and a plurality of flexible clamping plates detachably installed on the inner support framework, the plurality of flexible clamping plates are circumferentially distributed around the inner support framework, and the side clamping radius formed by the plurality of flexible clamping plates gradually decreases from top to bottom, and the inner support framework provides independent elastic support for each flexible clamping plate; and a plurality of pressing mechanisms, cooperating with the plurality of umbrella support members, used to drive the umbrella support members to slide down along the suspension ropes, so that the umbrella support members are inserted into and pressed tightly in the corresponding avoidance holes, and an adaptive flexible clamping contact is formed between the flexible clamping plates and the avoidance holes; The inner support framework includes: a sliding sleeve, slidably sleeved on the suspension rope; a plurality of framework plates, all hinged at a position near the bottom end of the sliding sleeve; a plurality of flexible clamping plates are detachably installed on the plurality of framework plates one by one; and a plurality of stay cables, all hinged at a position near the top end of the sliding sleeve, and movably connected to the plurality of framework plates one by one, and the stay cables are used to provide elastic support for the framework plates.

2. The automatic hoisting device for a wind power generation set according to claim 1, characterized in that: The stay cable includes: a sliding seat, slidably installed on the framework plate along the length direction of the framework plate; and at least one spring, one end of the spring is fixed on the sliding seat, and the other end is hinged at a position near the top end of the sliding sleeve.

3. The automatic hoisting device for a wind power generation set according to claim 1, characterized in that: A positioning groove is formed on the framework plate extending from the end far from the hinge along the length direction, and the positioning groove is closed at the end near the hinge of the framework plate; a positioning key inserted and matched with the positioning groove is arranged on the flexible clamping plate, and the flexible clamping plate is also provided with at least one fixing sleeve flexibly sleeved on the framework plate.

4. The automatic hoisting device for a wind power generation set according to claim 1, characterized in that: Each of the pressing mechanisms is correspondingly connected to two umbrella support members; the pressing mechanism includes: a slider, horizontally slidably installed on the suspension bracket; two push-pull rods, one end of which is symmetrically and horizontally rotatably installed on both sides of the slider; two connecting blocks, respectively fixed at the top ends of the sliding sleeves on the two umbrella support members, and the other ends of the two push-pull rods are respectively hinged to the two connecting blocks; and a locking member, assembled on the slider, used to lock the slider on the suspension bracket.

5. The automatic hoisting device for a wind power generation set according to claim 4, characterized in that: The suspension bracket includes: a main suspension beam, on which the slider is horizontally slidably installed; multiple groups of side suspension beams, distributed along the length direction of the main suspension beam, each group includes two side suspension beams, and the two side suspension beams in each group are symmetrically fixed on both sides of the main suspension beam; a suspension rope is installed on each side suspension beam.

6. The automatic hoisting device for a wind power generation set according to claim 5, wherein: A guide rail plate is arranged at the top end of the main suspension beam, the slider is slidably installed on the guide rail plate, and a plurality of hanging holes are formed on the guide rail plate.

7. An automatic hoisting device for a wind power generation set according to claim 6, characterized in that: The locking member is a locking screw threadedly installed on the slider, and the locking screw is vertically penetrated through the slider. When the locking screw presses against the top end of the guide rail plate, the slider is locked.

8. An automatic hoisting method for a wind power generation unit, using the automatic hoisting equipment for a wind power generation unit according to any one of claims 1-7, characterized in that, It includes the following steps: S1. Connect the hoisting equipment to the hoisting end of the crane; S2. Place the engine nacelle stably on the ground, vertically pass the suspension ropes through the corresponding avoidance holes on the outer shell of the engine nacelle, and extend them into the engine nacelle; S3. Hook the hanging ends of the suspension ropes at the hanging point positions arranged in the engine nacelle; S4. Lift the engine nacelle to make the suspension ropes taut; S5. Insert and press the umbrella support member into the avoidance hole through the pressing mechanism; S6. Lift and install the nacelle to the top of the tower. After the nacelle is fixedly installed, unload and separate the lifting equipment from the nacelle.

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