A wind power generation device capable of being lifted and lowered

Abstract

The present invention discloses a liftable wind power generation device, including a mounting platform, a height adjustment component and a lifting drive structure, wherein the height adjustment component includes a first transmission member, a support arm and an impeller structure, wherein the first transmission member is rotatably connected to the mounting platform, the support arm is fixedly connected to the first transmission member, the impeller structure is connected to a side of the support arm away from the first transmission member, and the lifting drive structure is arranged on the mounting platform and connected to the first transmission member; the first transmission member rotates under the drive of the lifting drive structure, and drives the impeller structure to rotate around the mounting platform. The installation and maintenance of the wind power generation device do not require the aid of lifting equipment, and the construction personnel and operation and maintenance personnel do not need to climb high. The assembly and maintenance of the wind power generation device can be completed on the mounting platform, which greatly reduces the difficulty of installation and maintenance operations and avoids the risk of operators climbing high.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a liftable wind power generation device. Background Art

[0002] The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the speed of rotation through the speed increaser to drive the generator to generate electricity. Since wind power generation does not involve fuel issues, does not produce radiation or air pollution, it is a clean and environmentally friendly way of generating electricity. With the continuous development and utilization of marine resources, the construction of offshore wind farms is becoming a trend in the world, and many large wind farms stand on the vast ocean.

[0003] During the construction of an offshore wind farm, it is necessary to use large lifting vessels and lifting machinery to lift the tower onto the pile foundation, and then the construction workers will fix the tower to the pile foundation, and then lift the wind turbine to the top of the tower, and then the construction workers will climb up to fix the wind turbine to the tower, and then install a single wind turbine. In the later operation and maintenance, the operation and maintenance personnel are often required to perform high-altitude operations. Due to the particularity of the marine environment, such as being susceptible to extreme factors such as typhoons and even tsunamis, the operators of wind farms face great safety risks. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is that in the prior art, construction workers climb up to fix the wind turbine set to the tower. In the later operation and maintenance, the operation and maintenance workers are often required to perform climbing operations. Due to the particularity of the marine environment, such as susceptibility to extreme factors such as typhoons and even tsunamis, the workers in the wind farm are exposed to great safety risks.

[0005] To this end, the present invention provides a liftable wind power generation device, comprising:

[0006] Installation platform;

[0007] A height adjustment assembly, comprising a first transmission member, a support arm and an impeller structure, wherein the first transmission member is rotatably connected to the mounting platform, the support arm is fixedly connected to the first transmission member, and the impeller structure is connected to a side of the support arm away from the first transmission member;

[0008] A lifting drive structure, the lifting drive structure is arranged on the mounting platform and connected to the first transmission member;

[0009] The first transmission member is driven to rotate by the lifting drive structure, and drives the impeller structure to rotate around the mounting platform.

[0010] Optionally, in the above-mentioned liftable wind power generation device, the height adjustment component further comprises:

[0011] A support, wherein the support is fixedly connected to the mounting platform, and the first transmission member is rotatably connected to the support via a rotating shaft;

[0012] A bearing is arranged between the first transmission member and the rotating shaft.

[0013] Optionally, in the above-mentioned liftable wind power generation device, the height adjustment component further comprises:

[0014] A cabin, the cabin being fixedly connected to the support arm;

[0015] a generator, the generator being arranged in the nacelle;

[0016] A main shaft, one end of which extends into the nacelle and is fixedly connected to the generator, and the other end of which is fixedly connected to the impeller structure.

[0017] Optionally, in the above-mentioned liftable wind power generation device, the support arm is a truss structure or a hollow cylindrical round rod.

[0018] Optionally, in the above-mentioned liftable wind power generation device, a plurality of height adjustment components are distributed on the installation platform, and two adjacent first transmission members are meshed with each other.

[0019] Optionally, in the above-mentioned liftable wind power generation device, the lifting drive structure includes a lifting drive member and a second transmission member, the lifting drive member is arranged on the mounting platform and connected to the second transmission member, the second transmission member is meshed with the first transmission member, and the lifting drive member can drive the second transmission member to rotate to drive the first transmission member to rotate.

[0020] Optionally, in the above-mentioned liftable wind power generation device, the first transmission member and the second transmission member are a pair of meshing gears, and the number of teeth of the first transmission member is greater than the number of teeth of the second transmission member;

[0021] The lifting drive member is a motor, and the lifting drive member is connected to the second transmission member through a transmission shaft.

[0022] Optionally, the above-mentioned liftable wind power generation device further includes a braking assembly, which includes:

[0023] case;

[0024] A friction disc, wherein the friction disc is sleeved on the transmission shaft;

[0025] A first brake block and a second brake block are arranged opposite to each other, and a portion of the friction disc is located between the first brake block and the second brake block;

[0026] A brake drive structure is disposed in the housing and can drive the first brake block and the second brake block to move closer to or farther from each other so as to tighten or loosen the friction disc.

[0027] Optionally, in the above-mentioned liftable wind power generation device, the braking assembly comprises:

[0028] A first brake caliper, wherein the first brake caliper comprises a first mounting portion, a second mounting portion and a third mounting portion, wherein the first mounting portion is fixedly connected to the first brake block, and the second mounting portion is hinged to the inner wall of the housing;

[0029] a second brake caliper, the second brake caliper having a fourth mounting portion, a fifth mounting portion and a sixth mounting portion, the fourth mounting portion being fixedly connected to the second brake block, and the fifth mounting portion being hinged to the inner wall of the housing;

[0030] The braking drive structure is connected to the third mounting portion and the sixth mounting portion respectively, and the braking drive structure can drive the third mounting portion and the sixth mounting portion to move closer to or farther away from each other, so as to make the first mounting portion and the fourth mounting portion move away from or closer to each other.

[0031] Optionally, in the above-mentioned liftable wind power generation device, the braking drive structure comprises:

[0032] A first connecting block, the first connecting block is hinged to the third mounting portion, and the first connecting block has a first guiding inclined surface;

[0033] a second connecting block, the second connecting block being hinged to the sixth mounting portion, the second connecting block having a second guiding inclined surface;

[0034] A third connecting block, wherein the third connecting block is slidably connected to the inner wall of the housing, and the third connecting block has a third guiding inclined surface and a fourth guiding inclined surface, wherein the third guiding inclined surface abuts against the first guiding inclined surface, and the fourth guiding inclined surface abuts against the second guiding inclined surface;

[0035] A brake driver is disposed in the housing and connected to the third connecting block, and the brake driver can drive the third connecting block to move along the radial direction of the friction disk to drive the first connecting block and the second connecting block to move away from or closer to each other.

[0036] Optionally, in the above-mentioned liftable wind power generation device, angles between the first guide slope, the second guide slope, the third guide slope and the fourth guide slope and the horizontal plane are all equal.

[0037] Optionally, in the above-mentioned liftable wind power generation device, the braking drive structure further comprises:

[0038] a sleeve, wherein the sleeve is fixedly connected to the third connecting block;

[0039] A screw rod, part of which is located in the sleeve and threadedly connected to the sleeve, the brake drive component is a motor, and the screw rod extending out of the sleeve is fixedly connected to the brake drive component.

[0040] Optionally, in the above-mentioned liftable wind power generation device, the braking drive structure further comprises:

[0041] A slider, wherein the slider is fixedly connected to the third connecting block;

[0042] A slide groove is provided on the inner wall of the housing.

[0043] The sliding block is slidably connected to the sliding groove.

[0044] Optionally, in the above-mentioned liftable wind power generation device, the brake assembly also includes an elastic member, both ends of which are respectively connected to the first brake caliper and the second brake caliper, and the first brake caliper and the second brake caliper are close to or away from each other so that the elastic member generates a reset elastic force.

[0045] Optionally, the above-mentioned liftable wind power generation device further includes a control component, and the control component is electrically connected to the lifting drive structure and the braking drive structure respectively.

[0046] The technical solution provided by the present invention has the following advantages:

[0047] 1. The liftable wind power generation device provided by the present invention comprises an installation platform, a height adjustment component and a lifting drive structure, the height adjustment component comprises a first transmission member, a support arm and an impeller structure, the first transmission member is rotatably connected to the installation platform, the support arm is fixedly connected to the first transmission member, the impeller structure is connected to a side of the support arm away from the first transmission member, the lifting drive structure is arranged on the installation platform and connected to the first transmission member; the first transmission member rotates under the drive of the lifting drive structure, and drives the impeller structure to rotate around the installation platform. The impeller structure is connected to the support arm, and then the support arm is fixedly connected to the first transmission member. The lifting drive structure drives the first transmission member to rotate, and the first transmission member drives the first support arm to swing, so that the altitude of the impeller structure on the first support arm is increased until the impeller structure rises to the specified altitude, and the installation of the wind power generation device can be completed. During inspection and maintenance, the lifting drive structure drives the first transmission member to rotate, and the first transmission member drives the support arm to swing, and the altitude of the impeller structure is lowered until the impeller structure is lowered to the installation platform, and the impeller structure can be inspected and maintained on the installation platform; the installation and maintenance of the wind power generation device do not require the aid of lifting equipment, and construction personnel and operation and maintenance personnel do not need to climb, and the assembly and maintenance of the wind power generation device can be completed on the installation platform, which greatly reduces the difficulty of installation and maintenance operations and avoids the risk of operators climbing operations.

[0048] 2. The liftable wind power generation device provided by the present invention can adjust the position of the corresponding impeller structure in real time through the lifting drive structure according to the incoming flow direction and wind speed, so as to optimize the distribution of each impeller structure in the wind farm, thereby reducing the influence of the wake effect between the impeller structures.

[0049] 3. In the liftable wind power generation device provided by the present invention, the number of teeth of the first transmission member is greater than the number of teeth of the second transmission member, and the lifting drive member only needs a small power to drive the heavier impeller structure and the support arm.

[0050] 4. The present invention provides a liftable wind power generation device, wherein the brake drive structure drives the first brake block and the second brake block to move closer to or farther from each other to clamp or loosen the friction disk, and the friction disk is sleeved on the transmission shaft. The brake drive structure enables the first brake block and the second brake block to clamp the friction disk, thereby maintaining the impeller structure at a fixed height. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of the structure of a liftable wind power generation device provided by the present invention;

[0053] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle circle A;

[0054] Figure 3 A cross-sectional view of a brake assembly in a liftable wind power generation device provided by the present invention.

[0055] Description of reference numerals:

[0056] 1. Installation platform;

[0057] 21. First transmission member; 22. Support arm; 23. Impeller structure; 24. Lifting drive structure; 241. Lifting drive member; 242. Second transmission member; 243. Transmission shaft; 25. Support; 26. Rotating shaft; 27. Cabin;

[0058] 31. housing; 32. friction disc; 33. first brake block; 34. second brake block; 35. brake drive structure; 351. first connecting block; 352. second connecting block; 353. third connecting block; 354. brake drive member; 355. slider; 356. sleeve; 36. first brake caliper; 37. second brake caliper; 38. elastic member;

[0059] 4. Control parts. DETAILED DESCRIPTION

[0060] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0064] Example 1

[0065] This embodiment provides a wind power generation device that can be raised and lowered. Figures 1 to 3 As shown, it includes an installation platform 1, a height adjustment component and a lifting drive structure 24. The height adjustment component includes a first transmission member 21, a support arm 22 and an impeller structure 23. The first transmission member 21 is rotatably connected to the installation platform 1, the support arm 22 is fixedly connected to the first transmission member 21, the impeller structure 23 is connected to the side of the support arm 22 away from the first transmission member 21, and the lifting drive structure 24 is arranged on the installation platform 1 and connected to the first transmission member 21; the first transmission member 21 rotates under the drive of the lifting drive structure 24, and drives the impeller structure 23 to rotate around the installation platform 1.

[0066] The liftable wind power generation device provided in this embodiment connects the impeller structure 23 with the support arm 22, and then the support arm 22 is fixedly connected with the first transmission member 21. The lifting drive structure 24 drives the first transmission member 21 to rotate, and the first rotating member drives the support arm 22 to swing, so that the altitude of the impeller structure 23 on the support arm 22 is increased, until the impeller structure 23 rises to a specified altitude, and the installation of the wind power generation device can be completed. When performing inspection and maintenance, the lifting drive structure 24 drives the first transmission member 21 to rotate, and the first transmission member 21 drives the support arm 22 to swing, and the altitude of the impeller structure 23 is reduced until the impeller structure 23 is lowered onto the installation platform 1, and the impeller structure 23 can be inspected and maintained on the installation platform 1; the installation and maintenance of the wind power generation device do not require the aid of lifting equipment, and the construction personnel and operation and maintenance personnel do not need to climb, and the assembly and maintenance of the wind power generation device can be completed on the installation platform 1, which greatly reduces the difficulty of installation and maintenance operations and avoids the risk of operators climbing operations.

[0067] like Figure 1As shown, the present embodiment provides a liftable wind turbine generator, wherein the installation platform 1 is an offshore jacket platform, the jacket platform is supported by piles driven into the seabed, and can withstand external forces such as wind, waves, and currents, and the jacket platform has a platform located on the water surface, and the platform is in the shape of a pancake; as an alternative implementation, the installation platform 1 may also be an offshore mobile platform or a fixed platform.

[0068] like Figure 1 and Figure 2 As shown, the liftable wind power generation device provided in this embodiment, the height adjustment component also includes a support 25, a rotating shaft 26 and a bearing. The support 25 is composed of a first plate and a second plate. The first plate and the second plate are arranged at intervals on the upper surface of the mounting platform 1. The first plate and the second plate are both welded and fixed on the mounting platform 1. The first plate is provided with a first through hole, the second plate is provided with a second through hole, the first transmission member 21 is provided with an axial hole, the first rotating member is located between the first plate and the second plate, and the axes of the first through hole, the second through hole and the axial hole are collinear. The rotating shaft 26 passes through the first through hole, the axial hole and the second through hole in sequence, and both ends of the rotating shaft 26 extend out of the first through hole and the second through hole. Both ends of the rotating shaft 26 extending out of the first through hole and the second through hole are provided with plug holes, and two pins are respectively inserted into the two plug holes to prevent the rotating shaft 26 from moving along its axial direction; the bearing is arranged between the rotating shaft 26 and the first rotating member, and the bearing is a pressure bearing.

[0069] like Figure 1 As shown, the liftable wind power generation device provided in this embodiment, the height adjustment component also includes a nacelle 27, a generator and a main shaft. The nacelle 27 is the cabin of a single-head horizontal-axis wind turbine generator. The generator is fixed in the nacelle 27 by bolts, and the main shaft is connected to the nacelle 27 by a bearing. One end of the main shaft extending into the nacelle 27 is fixedly connected to the generator, and the end of the main shaft extending out of the nacelle 27 is fixedly connected to the impeller structure 23 by bolts. The impeller structure 23 consists of a hub and blades evenly distributed around the hub. The rotation of the impeller structure 23 drives the main shaft to rotate, and the main shaft drives the generator to rotate and generate electricity.

[0070] like Figure 1 As shown, in the liftable wind power generation device provided in this embodiment, the support arm 22 is a hollow cylindrical rod, and the diameter of the support arm 22 gradually decreases toward the impeller structure 23, so as to reduce the weight of the support arm 22. As an alternative embodiment, the support arm 22 may also be a truss structure.

[0071] like Figure 1As shown, the present embodiment provides a liftable wind power generation device, two height adjustment components are distributed on the installation platform 1, two first transmission members 21 are meshed, one of the first transmission members 21 rotates, driving the other end transmission member to rotate, and the two first transmission members 21 rotate in opposite directions, when the altitude of one impeller structure 23 increases, the altitude of the other impeller structure 23 also increases. As an alternative implementation, those skilled in the art can adjust the number of height adjustment components as needed, and only need to mesh two adjacent first transmission members 21 to control multiple height adjustment components through a lifting drive structure 24.

[0072] like Figure 1 and Figure 2 As shown, the liftable wind power generation device provided in this embodiment, the lifting drive structure 24 includes a lifting drive member 241, a second transmission member 242, a transmission shaft 243 and a shaft support. The lifting drive member 241 is a servo motor. The lifting drive member 241 is fixedly connected to the top surface of the installation platform 1 by bolts. The first transmission member 21 and the second transmission member 242 are gears. The shaft support and the lifting drive member 241 are arranged at intervals. The two ends of the transmission shaft 243 are respectively inserted into the lifting drive member 241 and the shaft support. The lifting drive member 241 drives the transmission shaft 243 to rotate. The second transmission member 242 is key-connected with the transmission shaft 243, that is, the second transmission member 242 is fixedly connected with the transmission shaft 243. The second transmission member 242 is meshed with any one of the first transmission members 21. The number of teeth of the first transmission member 21 is greater than the number of teeth of the second transmission member 242. The lifting drive member 241 only needs a small power to drive the second transmission member 242 to rotate and drive the support arm 22 to swing, thereby changing the position of the impeller structure 23. As an alternative implementation, the first transmission member 21 and the second transmission member 242 are both incomplete gears.

[0073] In an alternative embodiment, the first transmission member 21 and the second transmission member 242 are grooved wheel mechanisms.

[0074] like Figure 1 and Figure 3As shown, the liftable wind power generation device provided in this embodiment also includes a brake assembly, which includes a shell 31, a friction disc 32, a first brake block 33, a second brake block 34 and a brake drive structure 35. The shell 31 is an open rectangular box, and the shell 31 is fixedly connected to the mounting platform 1 through a rectangular support column. The bottom of the rectangular support column is fixedly connected to the upper surface of the mounting platform 1 through bolts, and the top of the rectangular support column is welded and fixed to the outer bottom of the shell 31. The friction disc 32 is sleeved on the transmission shaft 243. The friction disc 32 is a metal disc. The friction disc 32 has high strength and rigidity, and the friction disc 32 has a high and stable friction coefficient; the first brake block 33 and the second brake block 34 are It is composed of friction material and adhesive, the first brake block 33 and the second brake block 34 are arranged opposite to each other, and the first brake block 33 and the second brake block 34 are respectively located on both sides of the friction disc 32. The brake drive structure 35 is arranged in the shell 31. The brake drive structure 35 can be two hydraulic cylinders, and the cylinder bodies of the two hydraulic cylinders are fixed in the shell 31. The telescopic rod of one hydraulic cylinder is connected to the first brake block 33, and the telescopic rod of the other hydraulic cylinder is connected to the second brake block 34. The movement of the corresponding brake block is realized by the extension and retraction of the telescopic rod in the cylinder body, and then the brake drive structure 35 drives the first brake block 33 and the second brake block 34 to move closer or farther from each other to hold or loosen the friction disc 32.

[0075] like Figure 1 and Figure 3 As shown, the liftable wind power generation device provided in this embodiment, the brake drive structure 35 includes a first brake caliper 36 and a second brake caliper 37. Figure 3Taking the perspective of as an example, part of the first brake caliper 36 extends out of the shell 31, and a first rectangular groove is opened at the bottom of the part of the first brake caliper 36 extending out of the shell 31, and a part of the first brake block 33 is inserted into the first rectangular groove, and the first brake block 33 is welded to the first rectangular groove, and the first rectangular groove is a first mounting portion. The first brake caliper 36 located in the shell 31 has a first bending portion, and the first bending portion is a second mounting portion, and the second mounting portion is hinged to the inner top wall of the shell 31; a second rectangular groove is opened at the top of the part of the second brake caliper 37 extending out of the shell 31, and a part of the second brake block 34 is inserted into the second rectangular groove, and the second brake block 34 is hinged to the second The rectangular groove is welded, the second rectangular groove is the fourth mounting part, the second brake caliper 37 located in the shell 31 has a second bending part, the second bending part is the fifth mounting part, and the fifth mounting part is hinged to the inner bottom wall of the shell 31; the bottom of the first brake caliper 36 near its right end is the third mounting part, and the top of the second brake caliper 37 near its right end is the sixth mounting part. The brake drive structure 35 can be a hydraulic cylinder, the cylinder body of the hydraulic cylinder is hinged to the sixth mounting part, and the telescopic rod of the hydraulic cylinder is hinged to the third mounting part. Through the extension and retraction of the telescopic rod, the third mounting part and the sixth mounting part are moved closer to or away from each other, thereby making the first mounting part and the fourth mounting part move away from or closer to each other.

[0076] like Figure 1As shown, the liftable wind power generation device provided in this embodiment, the braking drive structure 35 includes a first connecting block 351, a second connecting block 352, a third connecting block 353, a braking drive member 354, a sleeve 356, a screw rod, a slider 355 and a slide groove, the first connecting block 351 and the second connecting block 352 are both wedge-shaped blocks, the cross-sectional area of ​​the third connecting block 353 is an isosceles trapezoid, the top of the first connecting block 351 is hinged to the third mounting portion, the bottom of the first connecting block 351 is a first guide slope, the top of the second connecting block 352 is hinged to the sixth mounting portion, the top of the second connecting block 352 is a second guide slope, the top of the third connecting block 353 is a third guide slope, and the bottom is a fourth guide slope, the third guide slope abuts against the first guide slope, and the fourth guide slope abuts against the second guide slope, and the braking drive member 354 and the third connecting block 353, the first guide slope, the second guide slope, the third guide slope and the fourth guide slope are equal to each other. The brake drive member 354 is a servo motor, and the mounting base of the brake drive member 354 is fixedly connected to the inner wall of the shell 31 by bolts. A socket is provided on the third connecting block 353, and the sleeve 356 is inserted into the socket, and the outer wall of the sleeve 356 is welded and fixed to the third connecting block 353. The sleeve 356 has an internal thread, and the lead screw has an external thread. Part of the lead screw is located in the sleeve 356 and is threadedly connected to the sleeve 356. The lead screw extending out of the sleeve 356 is fixedly connected to the rotating shaft 26 of the brake drive member 354. The brake drive member 354 can drive the lead screw to rotate, thereby making the sleeve 356 move away from or close to the brake drive member 354, and then making the first connecting block 351 and the second connecting block 352 move away from or close to each other. The two sliders 355 are rectangular sliders 355, and the two sliders 355 are respectively welded and fixed on the front and rear side surfaces of the third connecting block 353. The front and rear inner side walls of the housing 31 are both provided with rectangular grooves, and the two sliders 355 are respectively inserted into the two slide grooves and can slide along the extension direction of the slide grooves. As an alternative embodiment, the brake driver 354 can also be a linear motor or a hydraulic cylinder, and the brake driver 354 is directly fixedly connected to the third connecting block 353.

[0077] like Figure 3 As shown, the liftable wind power generation device provided in this embodiment, the brake assembly also includes an elastic member 38, the elastic member 38 is a spring, the two ends of the elastic member 38 are respectively welded and fixed to the first brake caliper 36 and the second brake, and the elastic member 38 is located in the shell 31. When the first brake caliper 36 and the second brake caliper 37 are away from each other, the elastic member 38 has a reset elastic force. When the third connecting block 353 moves toward the direction close to the brake driving member 354, the first brake caliper 36 and the second brake caliper 37 are close to each other under the action of the reset elastic force. When the first transmission member 21 is in the initial state, the elastic member 38 is in a stretched state.

[0078] like Figure 1As shown, the liftable wind power generation device provided in this embodiment further includes a control component 4, which is a PLC, and is connected to the lift drive component 241 and the brake drive component 354 respectively through two communication cables, and the control component 4 is used to control the states of the lift drive component 241 and the brake drive component 354. As an alternative implementation, the control component 4 can also be connected to the lift drive component 241 and the brake drive component 354 respectively through a communication interface component, and the communication interface component supports multiple communication protocols, including but not limited to Modbus, PROFIBUS and OPC.

[0079] The liftable wind power generation device provided in this embodiment has a control component that can flexibly adjust the height and horizontal position of the impeller structure through a lifting drive component, so that the spatial position of each impeller structure can be adjusted according to the wind direction and wind speed to optimize the distribution of each impeller structure in the wind farm, thereby reducing the influence of the wake effect of each impeller structure upstream and downstream of the wind.

[0080] When it is necessary to raise the impeller structure 23, the clamp release action is performed first, and the control component 4 transmits a pulse signal to the brake driver 354, and the brake driver 354 starts to work. The brake driver 354 drives the screw rod to rotate, and the screw rod drives the sleeve 356 to move in the direction close to the brake driver 354. The sleeve 356 drives the third connecting block 353 to move, and at the same time makes the slider 355 slide along the slide groove. At this time, since the third guide slope abuts against the first guide slope, and the fourth guide slope abuts against the second guide slope, the third connecting block 353, the first connecting block 351 and the second connecting block 352 push each other, so that the distance between the first connecting block 351 and the second connecting block 352 becomes smaller, and the distance between the third mounting portion and the sixth mounting portion becomes smaller. At this time, the first clamp rotates around the second mounting portion, and the second clamp rotates around the fifth mounting portion. The mounting portion rotates, so that the distance between the second mounting portion and the fourth mounting portion becomes larger, so that the first brake block 33 and the second brake block 34 are close to the friction disk 32. Since the third mounting portion and the first connecting block 351 are hinged, when the first clamp rotates around the second mounting portion, the first guide bevel is always close to the third guide bevel. Since the sixth mounting portion and the second connecting block 352 are hinged, when the second clamp rotates around the fifth mounting portion, the second guide bevel is always close to the fourth guide bevel, until the second transmission member 242 rotates to the set number of circles, the clamp release action can be completed, and then the control member 4 calculates the number of circles n that the second transmission member 242 needs to rotate according to the length of the support arm 22, the altitude that the impeller structure 23 needs to reach, and the transmission ratio between the first transmission member 21 and the second transmission member 242 through the following analytical formula:

[0081]

[0082] Among them, H is the altitude that the impeller structure 23 needs to reach, H0 is the current height of the impeller structure 23, L is the length of the support arm 22; and i is the transmission ratio between the second transmission member 242 and the first transmission member 21.

[0083] After the control component 4 calculates the number of revolutions n that the second transmission component 242 needs to rotate, the control component 4 transmits the corresponding pulse signal to the lifting drive component 241, and the lifting drive component 241 works. The lifting drive component 241 drives the second transmission component 242 to rotate through the rotating shaft 26, and the second rotating component drives the first transmission component 21 to rotate. The first transmission component 21 drives the support arm 22 to swing, thereby changing the position of the impeller structure 23. After the second transmission component 242 rotates the set number of revolutions, the impeller structure 23 can be lifted to the specified height. When the first transmission component 21 rotates, it can drive another adjacent first transmission component 21 to rotate, thereby realizing the lifting and lowering of another impeller structure 23.

[0084] When it is necessary to raise the impeller structure 23, the locking action needs to be performed first. The control component 4 transmits a pulse signal to the brake driver 354, and the brake driver 354 starts to work. The brake driver 354 drives the screw rod to rotate, and the screw rod drives the sleeve 356 to move in a direction away from the brake driver 354. The sleeve 356 drives the third connecting block 353 to move, and at the same time makes the slider 355 slide along the slide groove, so that the distance between the first brake member and the second brake member becomes smaller, and the first brake block 33 and the second brake block 34 gradually fit the friction disk 32. As the displacement of the third connecting block 353 increases, the braking force of the first brake block 33 and the second brake block 34 on the friction disk 32 increases, until the first brake block 33 and the second brake block 34 have sufficient bite force with the friction disk 32.

[0085] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A liftable wind power generation device, characterized in that: include: Mounting platform (1); A height adjustment assembly, comprising a first transmission member (21), a support arm (22) and an impeller structure (23), wherein the first transmission member (21) is rotatably connected to the mounting platform (1), the support arm (22) is fixedly connected to the first transmission member (21), and the impeller structure (23) is connected to a side of the support arm (22) away from the first transmission member (21); a lifting drive structure (24), the lifting drive structure (24) being arranged on the installation platform (1) and connected to the first transmission member (21); The first transmission member (21) is driven by the lifting drive structure (24) to rotate, and drives the impeller structure (23) to rotate around the mounting platform (1); The height adjustment assembly also includes: A support (25), the support (25) being fixedly connected to the mounting platform (1), and the first transmission member (21) being rotatably connected to the support (25) via a rotating shaft (26); a bearing, the bearing being arranged between the first transmission member (21) and the rotating shaft (26); The height adjustment assembly also includes: A cabin (27), the cabin (27) being fixedly connected to the support arm (22); a generator, the generator being arranged in the nacelle (27); A main shaft, one end of the main shaft extending into the nacelle (27) and fixedly connected to the generator, and the other end of the main shaft fixedly connected to the impeller structure (23); The support arm (22) is a truss structure or a hollow cylindrical round rod; A plurality of the height adjustment components are distributed on the mounting platform (1), and two adjacent first transmission members (21) are meshed with each other; The lifting drive structure (24) comprises a lifting drive member (241) and a second transmission member (242); the lifting drive member (241) is arranged on the installation platform (1) and connected to the second transmission member (242); the second transmission member (242) is meshed with the first transmission member (21); the lifting drive member (241) can drive the second transmission member (242) to rotate, thereby driving the first transmission member (21) to rotate; The first transmission member (21) and the second transmission member (242) are a pair of meshing gears, and the number of teeth of the first transmission member (21) is greater than the number of teeth of the second transmission member (242); The lifting drive member (241) is a motor, and the lifting drive member (241) is connected to the second transmission member (242) via a transmission shaft (243); Also included is a brake assembly comprising: Housing (31); A friction disc (32), wherein the friction disc (32) is sleeved on the transmission shaft (243); A first brake block (33) and a second brake block (34) are arranged opposite to each other, and a portion of the friction disk (32) is located between the first brake block (33) and the second brake block (34); a brake drive structure (35), the brake drive structure (35) being arranged in the housing (31), and capable of driving the first brake block (33) and the second brake block (34) to move closer to or farther from each other, so as to tighten or loosen the friction disk (32); The brake assembly comprises: A first brake caliper (36), the first brake caliper (36) comprising a first mounting portion, a second mounting portion and a third mounting portion, the first mounting portion being fixedly connected to the first brake block (33), and the second mounting portion being hinged to the inner wall of the housing (31); a second brake caliper (37), the second brake caliper (37) having a fourth mounting portion, a fifth mounting portion and a sixth mounting portion, the fourth mounting portion being fixedly connected to the second brake block (34), and the fifth mounting portion being hinged to the inner wall of the housing (31); The brake drive structure (35) is connected to the third mounting portion and the sixth mounting portion respectively, and the brake drive structure (35) can drive the third mounting portion and the sixth mounting portion to move closer to or farther from each other, so as to make the first mounting portion and the fourth mounting portion move away from or closer to each other; The brake drive structure (35) comprises: A first connecting block (351), the first connecting block (351) being hinged to the third mounting portion, the first connecting block (351) having a first guiding inclined surface; a second connecting block (352), the second connecting block (352) being hingedly connected to the sixth mounting portion, the second connecting block (352) having a second guiding inclined surface; a third connecting block (353), the third connecting block (353) being slidably connected to the inner wall of the housing (31), the third connecting block (353) having a third guiding inclined surface and a fourth guiding inclined surface, the third guiding inclined surface abutting against the first guiding inclined surface, and the fourth guiding inclined surface abutting against the second guiding inclined surface; A brake driving member (354) is disposed in the housing (31) and connected to the third connecting block (353); the brake driving member (354) is capable of driving the third connecting block (353) to move along the radial direction of the friction disk (32) to drive the first connecting block (351) and the second connecting block (352) to move away from or closer to each other.

2. The liftable wind power generation device according to claim 1, characterized in that: The angles between the first guiding slope, the second guiding slope, the third guiding slope and the fourth guiding slope and the horizontal plane are all equal.

3. The liftable wind power generation device according to claim 2, characterized in that: The brake drive structure (35) further includes: a sleeve (356), the sleeve (356) being fixedly connected to the third connecting block (353); A screw rod, part of which is located in the sleeve (356) and is threadedly connected to the sleeve (356); the brake drive member (354) is a motor; the screw rod extending out of the sleeve (356) is fixedly connected to the brake drive member (354).

4. The liftable wind power generation device according to claim 3, characterized in that: The brake drive structure (35) further includes: A sliding block (355), the sliding block (355) being fixedly connected to the third connecting block (353); A slide groove, the slide groove being provided on the inner wall of the housing (31), The sliding block (355) is slidably connected to the sliding groove.

5. The liftable wind power generation device according to claim 4, characterized in that: The brake assembly further comprises an elastic member (38), two ends of the elastic member (38) being respectively connected to the first brake caliper (36) and the second brake caliper (37), and the first brake caliper (36) and the second brake caliper (37) are moved closer to or farther from each other so that the elastic member (38) generates a restoring elastic force.

6. The liftable wind power generation device according to claim 5, characterized in that: It also includes a control component (4), wherein the control component (4) is electrically connected to the lifting drive structure (24) and the braking drive structure (35) respectively.

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