Fan base for plateau area

Abstract

The draught fan base used for the plateau area is connected with a tower drum, the tower drum is arranged at the top of the draught fan base, a flanging structure is arranged at the end, close to the draught fan base, of the tower drum, a plurality of through holes are formed in the flanging structure, and the draught fan base comprises a base, a first driving part, a second driving part, a connecting part, a rotating column and a matching part; a plurality of fastening bolts are arranged on one side of the base, and a first groove is formed in the side, provided with the fastening bolts, of the base; the first driving part is arranged in the first groove and has a degree of freedom of moving in the first direction; the second driving part is connected to one end, close to the tower drum, of the first driving part; the connecting part is connected to one side, deviating from the first driving part, of the second driving part; the rotating column is connected to one side, deviating from the second driving part, of the connecting part and has the same axial direction as the first direction; and the matching piece is fixed in the tower drum. According to the invention, the fastening bolts and the through holes are in one-to-one correspondence in the first direction, so that the operation is convenient and fast, and the butt joint efficiency of the tower drum and the base is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a wind turbine base for use in plateau areas. Background Art

[0002] The wind turbine base is the base of the wind turbine. It is the fixed end of the wind turbine unit. It carries loads such as the tower, nacelle, and impeller. It is an important component to ensure the normal operation and power generation of the wind turbine.

[0003] When installing the tower, the tower needs to be docked with the base, and the tower needs to be moved so that the fastening bolts fixed on the top of the base pass through the bolt holes at the bottom of the tower, and further screw the nuts into the end of the fastening bolts away from the base to fix the tower.

[0004] However, during the above operation, the tower is usually lifted first when moving it. However, the tower swings widely, making it difficult to align the bolt holes on the tower with the fastening bolts on the base, resulting in a time-consuming and labor-intensive tower docking operation. Moreover, in plateau areas, the temperature difference between day and night is large, resulting in significant thermal expansion and contraction of various components, making the docking area between the tower and the base prone to damage. Utility Model Content

[0005] The main purpose of this application is to provide a wind turbine base for use in plateau areas, aiming to solve the problem that the tower docking operation is time-consuming and labor-intensive, and the docking area between the tower and the base is easily damaged.

[0006] To achieve the above-mentioned purpose, the present application provides a wind turbine base for plateau areas, which is connected to a tower, and the tower is arranged at the top of the wind turbine base. The tower has a flange structure at one end close to the wind turbine base, and a plurality of through holes are arranged on the flange structure. The wind turbine base includes a base, a first driving part, a second driving part, a connecting part, a rotating column and a matching part. A plurality of fastening bolts are arranged on one side of the base, and the plurality of fastening bolts correspond to the plurality of through holes one by one. A first groove is arranged on one side of the base where the fastening bolts are arranged, and each fastening bolt surrounds the periphery of the notch of the first groove, wherein the diameter of the through hole is larger than the diameter of the fastening bolt; the first driving part is arranged in the first groove and has a It has the freedom to move along the first direction, and the first direction is the same as the direction of gravity; the second driving part is connected to the end of the first driving part close to the tower, and the second driving part has the freedom to rotate around the first direction, and the second driving part moves along the first direction in response to the driving force of the first driving part; the connecting part is connected to the side of the second driving part away from the first driving part, and the connecting part rotates around the first direction in response to the driving force of the second driving part; the rotating column is connected to the side of the connecting part away from the second driving part and the axial direction is the same as the first direction; the matching piece is fixed in the tower, and the matching piece cooperates with the rotating column so that the axial direction of the tower is the same as the first direction, and the rotating column drives the matching piece to rotate when it rotates.

[0007] Optionally, the fan base also includes a clamping ring, which is arranged at the end of the rotating column close to and away from the connecting part. The cross-section of the clamping ring perpendicular to the first direction is annular, and the clamping ring has a head end and a tail end connected to each other; wherein, in the first direction, the height of the head end is greater than the height of the tail end; the side of the mating part facing the rotating column is provided with a column groove and a clamping groove that cooperate with the rotating column and the clamping ring.

[0008] Optionally, a conical groove is further provided on the mating part, which is connected to the column groove, and the end of the conical groove away from the column groove is the lower bottom of the conical groove; wherein, in the first direction, the conical groove, the column groove and the snap-fit ​​groove are successively away from the base.

[0009] Optionally, the rotating column is rotationally connected to the connecting portion and has the freedom of unidirectional rotation around a first direction. The freedom of the rotating column to rotate around the positive direction relative to the connecting portion is open and the freedom to rotate around the reverse direction is locked; wherein, the rotation direction of the clamping ring from the tail end to the head end is positive.

[0010] Optionally, a second groove is provided on the side of the connecting part facing away from the second driving part, and one end of the rotating column is inserted into the second groove and is rotatably connected to the connecting part; a third groove is provided on the outer periphery of the rotating column, and the third groove is located in the second groove; a plurality of pawl grooves are provided on the inner periphery of the second groove, and the plurality of pawl grooves are arranged around the first direction; the fan base also includes a pawl and a spring, one end of the pawl is rotatably connected in the third groove, and has the freedom to rotate around the first direction; the spring is provided in the third groove and connects the rotating column and the pawl, and the pawl rotates around the first direction in response to the driving force of the spring and is inserted into a pawl groove; wherein, when the rotating column rotates in the opposite direction relative to the connecting part, the pawl interferes with a pawl groove to lock the rotational freedom of the rotating column.

[0011] Optionally, the second driving part includes a connecting part and a motor, the connecting part is connected to the first driving part, and a receiving groove is provided on the side of the connecting part facing away from the first driving part; the motor is provided in the receiving groove and the axial direction of the output shaft is the same as the first direction, and the output shaft of the motor is connected to the connecting part.

[0012] Optionally, the connecting member and the connecting portion are rotationally connected via a thrust bearing.

[0013] Optionally, the fan base further includes a connecting ring, which is fixed to the outer periphery of the rotating column and is located on a side of the connecting portion away from the second driving portion, and the connecting ring is rotationally connected to the connecting portion via a thrust bearing.

[0014] Optionally, the fan base further includes an angle sensor and a controller, wherein the angle sensor is disposed in the second groove and connected to the rotating column; and the controller is disposed in the first groove and electrically connected to the angle sensor.

[0015] Optionally, the fan base also includes a spray pipe and a solenoid valve. The spray pipe is arranged on the outer periphery of the base, the spray pipe is annular and connected to an external high-pressure water source; the solenoid valve is arranged at the connection between the spray pipe and the external high-pressure water source.

[0016] The embodiment of the present application proposes a wind turbine base for plateau areas. When docking the tower, the tower is first hoisted above the base. At this time, the first driving part drives the second driving part, the connecting part and the rotating column to move along the first direction, so that the rotating column is inserted into the tower and matched with the matching part. At this time, the axial direction of the tower is the same as the first direction, and the second driving part drives the connecting part and the rotating column to rotate around the first direction. The rotating column drives the matching part and the tower to rotate synchronously, so that each fastening bolt corresponds to each through hole in the first direction. At this time, the mechanism for hoisting the tower slowly lowers the tower along the first direction, and the first driving part drives the connecting part and the rotating column to rotate around the first direction. The first driving part drives the second driving part, the connecting part and the rotating column to descend along the first direction, so that the fastening bolts on the base can pass through the corresponding through holes. At this time, nuts are screwed on the ends of each fastening bolt away from the base to complete the docking of the tower and the base. The operation of making each fastening bolt correspond to each through hole in the first direction is convenient and quick, which effectively improves the docking efficiency of the tower and the base. At the same time, the diameter of the through hole is larger than the diameter of the fastening bolt, so that there is a gap between the through hole and the fastening bolt, which adapts to the temperature changes in the plateau area and prevents the area where the through hole is located and the fastening bolt from being squeezed due to thermal expansion and contraction, resulting in damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a wind turbine base for use in plateau areas provided in an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the internal structure of the tower according to an embodiment of the present application;

[0019] Figure 3 for Figure 2 A schematic diagram of the structural disassembly of the embodiment;

[0020] Figure 4 This is a structural diagram of the first driving unit of an embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of the structural breakdown of the connection portion of an embodiment of the present application.

[0022] In the figure: 1. tower; 11. through hole; 2. base; 21. fastening bolt; 22. first groove; 3. first driving part; 4. connecting part; 41. second groove; 411. pawl groove; 5. rotating column; 51. clamping ring; 52. third groove; 6. matching part; 61. column groove; 62. clamping groove; 63. conical groove; 71. pawl; 81. connecting part; 811. accommodating groove; 82. motor.

[0023] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] refer to Figures 1 to 5 , it should be understood that Figure 3 The connections between the components should be like Figure 2 As compact as Figure 5 The connections between the components should be like Figure 4 As compact as in the example, this is just an example. Figure 3 and Figure 5 Some of the components in the middle are disassembled and displayed for easy understanding. The embodiment of the present application provides a wind turbine base for plateau areas, which is connected to the tower 1. The tower 1 is arranged at the top of the wind turbine base. The tower 1 has a flange structure at one end close to the wind turbine base. A plurality of through holes 11 are provided on the flange structure. The wind turbine base may include a base 2, a first driving part 3, a second driving part, a connecting part 4, a rotating column 5 and a matching part 6. A plurality of fastening bolts 21 are provided on one side of the base 2. The plurality of fastening bolts 21 correspond one to one with the plurality of through holes 11. A first groove 22 is provided on one side of the base 2 where the fastening bolts 21 are provided. Each fastening bolt 21 surrounds the periphery of the notch of the first groove 22, wherein the diameter of the through hole 11 is larger than the diameter of the fastening bolt 21; the first driving part 3, the second driving part, the connecting part 4, the rotating column 5 and the matching part 6; a plurality of fastening bolts 21 are provided on one side of the base 2, and the plurality of fastening bolts 21 correspond one to one with the plurality of through holes 11; a first groove 22 is provided on one side of the base 2 where the fastening bolts 21 are provided, and each fastening bolt 21 surrounds the periphery of the notch of the first groove 22, wherein the diameter of the through hole 11 is larger than the diameter of the fastening bolt 21; The moving part 3 is arranged in the first groove 22 and has the freedom to move along the first direction, which is the same as the direction of gravity; the second driving part is connected to the end of the first driving part 3 close to the tower 1, and the second driving part has the freedom to rotate around the first direction. The second driving part moves along the first direction in response to the driving force of the first driving part 3; the connecting part 4 is connected to the side of the second driving part away from the first driving part 3, and the connecting part 4 rotates around the first direction in response to the driving force of the second driving part; the rotating column 5 is connected to the side of the connecting part 4 away from the second driving part and the axial direction is the same as the first direction; the matching piece 6 is fixed in the tower 1, and the matching piece 6 cooperates with the rotating column 5 so that the axial direction of the tower 1 is the same as the first direction, and the rotating column 5 drives the matching piece 6 to rotate when it rotates.

[0029] The embodiment of the present application proposes a wind turbine base for plateau areas. When docking the tower 1, the tower 1 is first hoisted above the base 2. At this time, the first driving part 3 drives the second driving part, the connecting part 4 and the rotating column 5 to move along the first direction, so that the rotating column 5 is inserted into the tower 1 and cooperates with the matching part 6. At this time, the axial direction of the tower 1 is the same as the first direction, and the second driving part drives the connecting part 4 and the rotating column 5 to rotate around the first direction. The rotating column 5 drives the matching part 6 and the tower 1 to rotate synchronously, so that each fastening bolt 21 corresponds to each through hole 11 in the first direction. At this time, the mechanism for hoisting the tower 1 slowly lowers the tower 1 along the first direction, and the first driving part 3 drives The second driving part, the connecting part 4 and the rotating column 5 are lowered along the first direction, so that the fastening bolts 21 on the base 2 can pass through the corresponding through holes 11. At this time, a nut is screwed on the end of each fastening bolt 21 away from the base 2 to complete the docking of the tower 1 and the base 2. The operation of making each fastening bolt 21 correspond one-to-one with each through hole 11 in the first direction is convenient and quick, and the docking efficiency of the tower 1 and the base 2 is effectively improved; at the same time, the diameter of the through hole is larger than the diameter of the fastening bolt 21, so that there is a gap between the through hole 11 and the fastening bolt 21, which adapts to the temperature changes in the plateau area and prevents the area where the through hole 11 is located and the fastening bolt 21 from being squeezed due to thermal expansion and contraction, resulting in damage.

[0030] Among them, the first direction is the same as the direction of gravity, the first driving part 3 can be a hydraulic cylinder, the hydraulic cylinder has a cylinder body and a piston rod, the cylinder body is connected to the base 2, one end of the piston rod is inserted into the cylinder body, and the other end is connected to the second driving part. The axial direction of the piston rod is the same as the first direction, and the piston rod can be extended and retracted along its own axial direction relative to the cylinder body.

[0031] In addition, each fastening bolt 21 corresponds to each through hole 11 in the first direction, which means that when the tower 1 approaches the base 2 along the first direction, each fastening bolt 21 can pass through the corresponding through hole 11.

[0032] It should be noted that the surface of the base 2 is provided with an anti-corrosion structure. For example, the surface of the base 2 is sprayed with anti-corrosion paint to prevent strong ultraviolet rays in the plateau area and increase the service life of the base 2.

[0033] Furthermore, the fan base also includes a spray pipe and a solenoid valve. The spray pipe is arranged on the outer periphery of the base 2, the spray pipe is annular and connected to an external high-pressure water source; the solenoid valve is arranged at the connection between the spray pipe and the external high-pressure water source; the spray pipe is connected to the external high-pressure water source, and a solenoid valve is provided on the spray pipe. By controlling the opening and closing of the solenoid valve, it is possible to control whether the spray pipe sprays water to the base 2. In this way, the concrete on the base 2 can be moisturized and maintained regularly, effectively preventing the concrete from cracking due to dry air in the plateau area.

[0034] like Figure 1As shown, the base 2 is in a truncated cone shape, and the fastening bolts 21 are arranged at the upper bottom of the base 2. In this way, the base 2 is more stable, and the larger the lower bottom area of ​​the base 2, the more stable the base 2 is, and the better it is at adapting to the strong winds that frequently occur in plateau areas.

[0035] refer to Figures 2 to 4 In an exemplary embodiment, the fan base may further include a clamping ring 51, which is arranged at the end of the rotating column 5 close to and away from the connecting portion 4. The cross-section of the clamping ring 51 perpendicular to the first direction is annular, and the clamping ring 51 has a head end and a tail end connected to each other; wherein, in the first direction, the height of the head end is greater than the height of the tail end; the side of the mating piece 6 facing the rotating column 5 is provided with a column groove 61 and a clamping groove 62 that cooperate with the rotating column 5 and the clamping ring 51.

[0036] Specifically, the clamping ring 51 can be regarded as an arc arranged in a ring shape, having a head end and a tail end, and the head end and the tail end are connected. The side of the mating part 6 facing the rotating column 5 is provided with a column groove 61 and a clamping groove 62 that cooperate with the rotating column 5 and the clamping ring 51, which means that the column groove 61 corresponds to the rotating column 5, and the rotating column 5 is fitted with the column groove 61 after being inserted into the column groove 61, and the clamping groove 62 corresponds to the clamping ring 51, and the clamping ring 51 is fitted with the clamping groove 62 after being inserted into the clamping groove 62.

[0037] like Figure 4 As shown, in the first direction, the height of the head end is greater than the height of the tail end, so that the clamping ring 51 rises in a spiral shape away from the side of the rotating column 5, and the height difference between the head end and the tail end forms a cross-section, and the clamping groove 62 corresponds to the clamping ring 51, so the clamping groove 62 also has a cross-section. When the rotating column 5 rises, the rotating column 5 and the clamping ring 51 both enter the column groove 61 first. At this time, the rotating column 5 and the column groove 61 fit tightly together, and the tower 1 can be straightened so that the axial direction of the tower 1 is the same as the first direction. The rotating column 5 continues to rise, so that the clamping ring 51 is inserted into the corresponding clamping groove 62. At this time, the cross-section on the clamping ring 51 is in contact with the cross-section on the clamping groove 62. When the clamping ring 51 rotates, the cross-section on the clamping ring 51 pushes the cross-section on the clamping groove 62, so that the clamping ring 51 can drive the matching part 6 to rotate around the first direction, and further the second driving part can drive the tower 1 to rotate.

[0038] refer to Figure 3 In an exemplary embodiment, a conical groove 63 is further provided on the mating part 6, and the conical groove 63 is connected to the column groove 61, and the end of the conical groove 63 away from the column groove 61 is the lower bottom of the conical groove 63; wherein, in the first direction, the conical groove 63, the column groove 61 and the clamping groove 62 are away from the base 2 in sequence.

[0039] Specifically, such as Figure 3As shown, the conical groove 63 is truncated cone-shaped as a whole, and the upper bottom of the conical groove 63 is connected to the column groove 61, and in the first direction, the conical groove 63, the column groove 61 and the clamping groove 62 are successively away from the base 2, so that when the tower 1 is lifted, even if the tower 1 shakes, the rotating column 5 can still be easily inserted into the lower bottom of the conical groove 63 during the rising process, and then the rotating column 5 can be inserted into the column groove 61 along the side of the conical groove 63, and the tower 1 can be straightened to facilitate subsequent operations.

[0040] refer to Figure 4 and Figure 5 In an exemplary embodiment, the rotating column 5 is rotationally connected to the connecting portion 4 and has the freedom of unidirectional rotation around a first direction. The freedom of the rotating column 5 to rotate around the positive direction relative to the connecting portion 4 is open and the freedom to rotate around the reverse direction is locked; wherein, the rotation direction of the clamping ring 51 from the tail end to the head end is positive.

[0041] Specifically, such as Figure 4 As shown, if viewed from top to bottom along the first direction, the positive direction is counterclockwise and the reverse direction is clockwise; when the clamping ring 51 is inserted into the clamping groove 62, the cross-sectional position of the clamping ring 51 is not necessarily consistent with the cross-sectional position of the clamping groove 62. In this way, when the cross-sectional position of the clamping ring 51 is not necessarily inconsistent with the cross-sectional position of the clamping groove 62, while the clamping ring 51 is inserted into the clamping groove 62 along the first direction, since the rotation direction of the clamping ring 51 from the tail end to the head end is positive, the clamping ring 51 will be driven by the force from the clamping groove 62 to rotate positively relative to the connecting part 4, and the clamping ring 51 further drives the rotating column 5 to rotate positively relative to the connecting part 4, and makes the cross-section of the clamping ring 51 fit the cross-section of the clamping groove 62. At this time, the clamping groove 62 no longer provides a driving force for the clamping ring 51 to rotate forward. If the clamping ring 51 rotates further forward, the cross section of the clamping ring 51 can cooperate with the end cross section of the clamping groove 62, thereby driving the mating part 6 to rotate forward.

[0042] Furthermore, based on the cooperation between the above-mentioned clamping ring 51 and the clamping groove 62, when the second driving part drives the connecting part 4 to rotate in the forward direction, the rotating column 5 cannot rotate in the reverse direction relative to the connecting part 4, and the connecting part 4 will further drive the rotating column 5, the clamping ring 51 and the matching part 6 to rotate in the forward direction, thereby further driving the tower 1 to rotate in the forward direction by the matching part 6, so that each fastening bolt 21 corresponds one by one to each through hole 11 in the first direction.

[0043] refer to Figure 4 and Figure 5In an exemplary embodiment, a second groove 41 is provided on the side of the connecting part 4 facing away from the second driving part, and one end of the rotating column 5 is passed through the second groove 41 and is rotatably connected to the connecting part 4; a third groove 52 is provided on the outer periphery of the rotating column 5, and the third groove 52 is located in the second groove 41; a plurality of pawl grooves 411 are provided on the inner periphery of the second groove 41, and the plurality of pawl grooves 411 are arranged around the first direction; the fan base may also include a pawl 71 and a spring, one end of the pawl 71 is rotatably connected to the third groove 52, and has the freedom to rotate around the first direction; the spring is provided in the third groove 52 and connects the rotating column 5 and the pawl 71, and the pawl 71 rotates around the first direction in response to the driving force of the spring and is inserted into a pawl groove 411; wherein, when the rotating column 5 rotates in the opposite direction relative to the connecting part 4, the pawl 71 contacts a pawl groove 411 to lock the rotational freedom of the rotating column 5.

[0044] Specifically, such as Figure 5 As shown, the spring is always in a compressed state, and the pawl 71 is pushed by the spring so that one end of the pawl 71 is inserted into a pawl groove 411. When the rotating column 5 rotates forward relative to the connecting portion 4, the pawl 71 rotates synchronously with the rotating column 5, and the pawl 71 passes through multiple pawl grooves 411 in sequence; when the rotating column 5 rotates reversely relative to the connecting portion 4, one end of the pawl 71 contacts the side wall of the pawl groove 411, so that the rotating column 5 cannot rotate reversely relative to the connecting portion 4.

[0045] It should be understood that the cooperation relationship between the pawl 71 and the pawl groove 411 is similar to that of a ratchet and pawl mechanism. The specific cooperation between the pawl 71 and the pawl groove 411 to achieve unidirectional rotation of the rotating column 5 can refer to the working principle of the ratchet and pawl mechanism.

[0046] refer to Figure 5 In an exemplary embodiment, the second driving part may include a connecting member 81 and a motor 82, the connecting member 81 is connected to the first driving part 3, and a receiving groove 811 is provided on the side of the connecting member 81 facing away from the first driving part 3; the motor 82 is arranged in the receiving groove 811 and the axial direction of the output shaft is the same as the first direction, and the output shaft of the motor 82 is connected to the connecting part 4.

[0047] Specifically, when the output shaft of the motor 82 rotates forward, it drives the connecting part 4 to rotate forward. The connecting part 4 further drives the rotating column 5 to rotate forward through the cooperation between the pawl 71 and the pawl groove 411. The rotating column 5 further drives the tower 1 to rotate forward, so that each fastening bolt 21 corresponds one-to-one with each through hole 11 in the first direction.

[0048] Furthermore, when the hydraulic cylinder drives the clamping ring 51 to cooperate with the clamping groove 62, the tower 1 is straightened, that is, the axial direction of the tower 1 is the same as the first direction. At this time, the motor 82 finally drives the tower 1 to rotate around the first direction so that each fastening bolt 21 corresponds to each through hole 11 in the first direction. After that, the hydraulic cylinder contracts, and the mechanism that lifts the tower 1 synchronously lowers the tower 1 so that each fastening bolt 21 can pass through the corresponding through hole 11. Finally, the nut is tightened to complete the docking of the tower 1 and the base 2. The operation is convenient and quick.

[0049] It should be noted that the coupling between the clamping ring 51 and the clamping groove 62 is completed, which means that the cross section of the clamping ring 51 is in conflict with the cross section of the clamping groove 62 .

[0050] In an exemplary embodiment, the connecting member 81 and the connecting part 4 are rotatably connected via a thrust bearing. The thrust bearing here is referred to as a first bearing. The axial direction of the first bearing is the same as the first direction and the connecting member 81 and the connecting part 4 are respectively connected on both sides of the first direction. In this way, the connecting member 81 and the connecting part 4 can bear load and rotate, preventing the motor 82 from bearing the load and causing damage to the motor 82.

[0051] In an exemplary embodiment, the fan base may further include a connecting ring, which is fixed to the outer periphery of the rotating column 5 and is located on the side of the connecting part 4 away from the second driving part. The connecting ring and the connecting part 4 are rotatably connected through a thrust bearing. The thrust bearing here is recorded as a second bearing. The axial direction of the second bearing is the same as the first direction and is respectively connected to the connecting part 4 and the connecting ring on both sides of the first direction. In this way, the connection part 4 and the connecting ring can bear weight and rotate. In other words, the connection part 4 and the rotating column 5 bear weight and rotate, and cooperate with the above-mentioned pawl 71 and the pawl groove 411 to finally realize the unidirectional rotation of the rotating column 5 relative to the connecting part 4.

[0052] In an exemplary embodiment, the fan base may further include an angle sensor and a controller. The angle sensor is disposed in the second groove 41 and connected to the rotating column 5 ; the controller is disposed in the first groove 22 and electrically connected to the angle sensor.

[0053] Among them, there are many existing solutions for angle sensors, which will not be described in detail here. After the angle sensor detects the rotation angle of the rotating column 5 relative to the connecting part 4, it sends a corresponding signal to the controller.

[0054] Specifically, the tower 1 has an initial position. When the tower 1 is in the initial position, each fastening bolt 21 corresponds one-to-one with each through hole 11 in the first direction, and the clamping ring 51 can directly cooperate with the clamping groove 62 after rising, without the need for the clamping ring 51 and the rotating column 5 to rotate relative to the connecting part 4.

[0055] However, due to the shaking of the tower 1, the tower 1 can hardly be in the initial position, that is, after the clamping ring 51 rises, the rotating column 5 needs to be rotated in the positive direction relative to the connecting part 4, so that the clamping ring 51 and the clamping groove 62 can be matched. In this way, the angle sensor records the angle of the positive rotation of the rotating column 5 relative to the connecting part 4, which is recorded as the positive rotation angle. The controller can determine the angle that the motor 82 needs to drive the connecting part 4 to rotate in the positive direction to complete the correspondence between the fastening bolt 21 and the through hole 11, thereby realizing automatic control.

[0056] Furthermore, if the pawl 71 is used to cooperate with the pawl groove 411 to realize unidirectional rotation of the rotating column 5 relative to the connecting part 4, there will be a certain error. For example, the rotating column 5 rotates forward until the clamping ring 51 and the clamping groove 62 are fully engaged. At this time, the end of the pawl 71 inserted into the pawl groove 411 does not necessarily conflict with the side wall of the pawl groove 411, and even the end of the pawl 71 outside the third groove 52 may be between two adjacent pawl grooves 411. At this time, when the connecting part 4 rotates forward, the rotating column 5 and the clamping ring 51 are immobilized by the resistance of the matching part 6 and the tower 1, so that the rotating column 5 will rotate slightly in the opposite direction relative to the connecting part 4 until the end of the pawl 71 outside the third groove 52 conflicts with the side wall of a pawl groove 411. Here, the angle of reverse rotation of the rotating column 5 relative to the connecting part 4 can be recorded as the error angle.

[0057] Furthermore, the plurality of fastening bolts 21 are evenly spaced along the circumferential direction, and the angle between the lines connecting adjacent fastening bolts 21 and the center of the upper surface of the base 2 is recorded as the angle.

[0058] In this way, the specific control process can be that the angle sensor sends the forward rotation angle to the controller, the controller calculates the angle of the connection part 4 to be rotated forward based on the forward rotation angle and the included angle, and controls the motor 82 to drive the connection part 4 to rotate forward to the corresponding angle. During the rotation of the connection part 4, the angle sensor detects the error angle and sends it to the controller, and the controller corrects the angle to be rotated forward. In other words, the corrected angle to be rotated forward is the angle to be rotated forward before correction plus the error angle. In this way, the motor 82 can be automatically controlled to rotate, so that each fastening bolt 21 corresponds one-to-one with each through hole 11 in the first direction.

[0059] It should be noted that the controller calculates the angle of the connection part 4 to be rotated forward based on the forward rotation angle and the included angle. For example, if the included angle is 30° and the forward rotation angle is 110°, then the forward rotation angle is subtracted by the periodic portion in which multiple fastening bolts 21 are arranged. In this way, the actual forward rotation angle is 110° minus three 30°, which is recorded as 20°; further, the forward rotation angle of the connection part 4 is 20°, and then the controller controls the motor 82 to rotate and corrects the forward rotation angle.

[0060] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A wind turbine base for use in plateau areas, characterized in that: Connected to a tower (1), the tower (1) is arranged on the top of the fan base, the tower (1) has a flange structure at one end close to the fan base, and a plurality of through holes (11) are arranged on the flange structure, and the fan base comprises: A base (2) is provided with a plurality of fastening bolts (21) on one side, the plurality of fastening bolts (21) corresponding one to one with the plurality of through holes (11), a first groove (22) is provided on the side of the base (2) provided with the fastening bolts (21), each of the fastening bolts (21) surrounds the periphery of the notch provided in the first groove (22), wherein the diameter of the through hole (11) is larger than the diameter of the fastening bolt (21); A first driving portion (3) is disposed in the first groove (22) and has the freedom to move along a first direction, the first direction being the same as the direction of gravity; a second driving part connected to an end of the first driving part (3) close to the tower (1), the second driving part having a degree of freedom to rotate about the first direction, and the second driving part moving along the first direction in response to a driving force of the first driving part (3); a connecting portion (4) connected to a side of the second driving portion facing away from the first driving portion (3), wherein the connecting portion (4) rotates around the first direction in response to a driving force of the second driving portion; A rotating column (5) connected to a side of the connecting portion (4) facing away from the second driving portion and having an axial direction in the same direction as the first direction; A matching piece (6) is fixed in the tower (1), and the matching piece (6) matches the rotating column (5) so that the axial direction of the tower (1) is the same as the first direction, and the rotating column (5) drives the matching piece (6) to rotate when rotating.

2. The wind turbine base for plateau areas according to claim 1, characterized in that: The fan base also includes: A clamping ring (51) is provided at an end of the rotating column (5) close to and away from the connecting portion (4); the cross section of the clamping ring (51) perpendicular to the first direction is annular; and the clamping ring (51) has a head end and a tail end connected to each other; Wherein, in the first direction, the height of the head end is greater than the height of the tail end; A column groove (61) and a clamping groove (62) that cooperate with the rotating column (5) and the clamping ring (51) are provided on one side of the matching piece (6) facing the rotating column (5).

3. The wind turbine base for plateau areas according to claim 2, characterized in that: The fitting (6) is further provided with a tapered groove (63), the tapered groove (63) being in communication with the column groove (61), and the end of the tapered groove (63) away from the column groove (61) being the lower bottom of the tapered groove (63); Wherein, in the first direction, the tapered groove (63), the column groove (61), and the clamping groove (62) are sequentially away from the base (2).

4. The wind turbine base for plateau areas according to claim 2, characterized in that: The rotating column (5) is rotationally connected to the connecting portion (4) and has a unidirectional rotational degree of freedom around the first direction; the rotating column (5) is open in terms of the degree of freedom of rotation around the positive direction relative to the connecting portion (4) and is locked in terms of the degree of freedom of rotation around the reverse direction; Wherein, the rotation direction of the clamping ring (51) from the tail end to the head end is the forward direction.

5. The wind turbine base for plateau areas according to claim 4, characterized in that: The connecting portion (4) has a second groove (41) on a side facing away from the second driving portion, and one end of the rotating column (5) is inserted into the second groove (41) and is rotatably connected to the connecting portion (4); A third groove (52) is provided on the outer periphery of the rotating column (5), and the third groove (52) is located inside the second groove (41); The inner periphery of the second groove (41) is provided with a plurality of ratchet grooves (411), and the plurality of ratchet grooves (411) are arranged around the first direction; The fan base also includes: a ratchet (71), one end of which is rotatably connected to the third groove (52) and has the freedom to rotate about the first direction; a spring disposed in the third groove (52) and connecting the rotating column (5) and the pawl (71); the pawl (71) rotates about the first direction in response to a driving force of the spring and is inserted into a pawl slot (411); When the rotating column (5) rotates in the opposite direction relative to the connecting portion (4), the pawl (71) contacts a pawl groove (411) to lock the rotational freedom of the rotating column (5).

6. The wind turbine base for plateau areas according to claim 2, characterized in that: The second driving unit includes: A connecting member (81) is connected to the first driving portion (3), and a receiving groove (811) is provided on a side of the connecting member (81) facing away from the first driving portion (3); The motor (82) is arranged in the accommodating groove (811) and the axial direction of the output shaft is the same as the first direction. The output shaft of the motor (82) is connected to the connecting portion (4).

7. The wind turbine base for plateau areas according to claim 6, characterized in that: The connecting member (81) and the connecting portion (4) are rotationally connected via a thrust bearing.

8. The wind turbine base for plateau areas according to claim 5, characterized in that: The fan base also includes: A connecting ring is fixed to the outer periphery of the rotating column (5) and is located on a side of the connecting portion (4) away from the second driving portion. The connecting ring and the connecting portion (4) are rotatably connected via a thrust bearing.

9. The wind turbine base for plateau areas according to claim 5, characterized in that: The fan base also includes: an angle sensor disposed in the second groove (41) and connected to the rotating column (5); A controller is disposed in the first groove (22) and is electrically connected to the angle sensor.

10. The wind turbine base for use in plateau areas according to claim 8, characterized in that: The fan base also includes: A spray pipe is provided on the outer periphery of the base (2), the spray pipe being annular and connected to an external high-pressure water source; The electromagnetic valve is arranged at the connection between the spray pipe and the external high-pressure water source.

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