Positioning device and positioning method for wind turbine head

Abstract

The present invention discloses a positioning device for a wind turbine head and a positioning method thereof. The positioning device includes a reducer and a drive motor located on the inner wall of a column near the top. A fixing sleeve is fixedly connected to the top of a fixing seat. An inner wall of the fixing sleeve is fixedly connected to an inner gear ring via a connecting rod. The output shaft end of the reducer is fixedly connected to a drive gear, which is meshed with the inner gear ring. An inner wall of the column is fixedly connected to an inner cylinder via a fixing rod. A circular plate is fixedly connected to the top of the inner cylinder. A friction ring is fixedly connected to the inner wall of the fixing sleeve near the top. A locking device is provided on one side of the circular plate. The working ends of the locking device are located on both sides of the friction ring. The locking device limits the rotation of the power generation chamber by clamping the friction ring. The present invention relates to the field of wind power generation technology and solves the drawbacks of existing heads that use a worm gear structure to achieve head rotation and positioning, thereby achieving accurate steering of the head and ensuring the stability of the head.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a positioning device for a wind turbine head and a positioning method thereof. Background Art

[0002] The rotor of a wind turbine rotates under the influence of wind, converting the wind's kinetic energy into mechanical energy for the rotor shaft. Driven by the rotor shaft, the generator rotates to generate electricity. Therefore, wind direction determines the power generation efficiency of a wind turbine. However, in nature, wind direction is constantly changing. Therefore, the head of a wind turbine is designed with a rotatable structure to cope with different wind directions, so that the blades face the wind direction to ensure power generation efficiency. However, in nature, wind direction can also change in a very short time. If a rotating structure is used alone, the head will be unstable. In existing rotating structures, a worm gear structure is generally used to drive the rotation of the head. The unidirectional transmission characteristics of the worm gear are then used to ensure the stability of the head, thereby achieving the purpose of rotating and positioning the head, achieving two goals at one stroke. However, this structure requires high strength for the worm gear. The worm gear teeth are prone to deformation under high loads for a long time, and in severe cases, they may break, affecting the stability of the head. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In response to the deficiencies of the prior art, the present invention provides a positioning device and a positioning method for a wind turbine head, which solves the drawbacks of the prior art head that uses a worm gear structure to achieve head rotation and positioning, achieves accurate steering of the head, and ensures the stability of the head.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A positioning device for a wind turbine head, comprising a column and a power generation chamber, wherein a fixing seat is fixedly connected to the surface of the column near the top, a mounting seat is fixedly connected to the bottom of the power generation chamber, the mounting seat is arranged on the top of the fixing seat and is slidably connected to the fixing seat, a reducer and a drive motor are provided on the inner wall of the column near the top, a fixing sleeve is fixedly connected to the top of the fixing seat, the top of the fixing sleeve extends into the interior of the power generation chamber, the inner wall of the fixing sleeve is fixedly connected to an inner gear ring through a connecting rod, the output shaft end of the reducer is fixedly connected to a drive gear, and the drive gear is meshed with the inner gear ring, the inner wall of the column is fixedly connected to an inner cylinder through a fixing rod, the top of the inner cylinder extends above the column, the top of the inner cylinder is fixedly connected to a circular plate, the inner wall of the fixing sleeve is fixedly connected to a friction ring near the top, a locking device is provided on one side of the circular plate, the working ends of the locking device are located on both sides of the friction ring, and the locking device limits the rotation of the power generation chamber by clamping the friction ring.

[0007] Preferably, the bottom of the inner wall of the power generation bin is fixedly connected to an overhead bracket, the top of the overhead bracket is fixedly connected to a generator, a blade mounting seat is provided on one side of the power generation bin, the center of the blade mounting seat is fixedly connected to a fan shaft, an electrical cabinet and a speed increaser are also provided in the power generation bin, one end of the fan shaft is transmission-connected to one end of the speed increaser, and the other end of the speed increaser is transmission-connected to one end of the generator, a control box and an angle sensor are provided on the top of the inner wall of the power generation bin, a connecting shaft is vertically rotatably connected to one side of the top of the power generation bin, the top of the connecting shaft is fixedly connected to a wind guide plate, and the bottom end of the connecting shaft is fixedly connected to the detection end of the angle sensor.

[0008] Preferably, the locking device includes a first shell and a second shell, a first fixed plate and a second fixed plate are vertically arranged in parallel on one side of the first shell, a stabilizing plate is arranged between the first fixed plate and the second fixed plate, two stabilizing plates are provided and are symmetrically arranged, a pressure plate is fixedly connected to one side of the stabilizing plate, a friction plate and a block are fixedly connected to one side of the pressure plate, a connecting plate is fixedly connected to the other side of the stabilizing plate, a first steel cable is fixedly connected between the two connecting plates, a fixed pulley is provided in the middle of the first shell, a winding motor is provided in the second shell, a second steel cable is fixedly connected to the working end of the winding motor, a pulley is provided at one end of the second steel cable, and the first steel cable passes around one side of the pulley.

[0009] Preferably, a partition is fixedly connected to one side of the second fixed plate, sliding rods are fixedly connected between both sides of the partition and the inner wall of the first shell, the connecting plate is slidably connected to the sliding rods, and a spring is provided between the partition and the connecting plate.

[0010] Preferably, a guide wheel is provided on the surface of the first shell on a side close to the second shell, and two guide wheels are provided.

[0011] Preferably, a hydraulic rod is rotatably provided on one side of the first fixed plate, a first connecting rod is rotatably connected to one side of the pressure plate, a second connecting rod is provided on the first shell and located on one side of the first connecting rod, and one end of the first connecting rod and the second connecting rod are rotatably connected to the working end of the hydraulic rod.

[0012] Preferably, a reinforcement sleeve is provided at the bottom of the mounting seat, one side of the reinforcement sleeve is slidably connected to the bottom of the fixing seat, the inner wall of the fixing sleeve is fixedly connected to a support ring, and the bottom end of the circular plate is slidably connected to the top of the support ring.

[0013] Preferably, the friction ring comprises a circular ring, both sides of the circular ring are plane, the inner wall of the circular ring is provided with tooth grooves, the surface of the circular ring is provided with through holes, and the clamping block is adapted to the tooth grooves.

[0014] A method for positioning a wind turbine head, applicable to the above-mentioned positioning device for a wind turbine head, comprises the following steps:

[0015] S1: Wind blows the wind deflector, and the angle sensor detects the wind direction through the connecting shaft;

[0016] S2, the control box controls the drive motor to start, and drives the drive gear to rotate through the reducer to realize the steering of the power generation chamber and make the fan blades face the wind direction;

[0017] S3. After the adjustment of the power generation chamber is completed, the winding motor is started, the pressure plate moves toward the friction ring, clamps the friction ring, and completes the positioning of the generator head.

[0018] Preferably, the steering angle of the power generation chamber is equal to the angle detected by the angle sensor.

[0019] (3) Beneficial effects

[0020] The present invention provides a positioning device and a positioning method for a wind turbine head.

[0021] Beneficial effects:

[0022] The positioning device of the head of this wind turbine uses an angle sensor and a wind deflector to detect the wind direction, and then uses a drive motor and a reducer to turn the head, ensuring that the head faces the wind direction, thereby ensuring the efficiency of power generation; a locking device and a friction ring are set inside the power generation compartment, and the locking device is used to clamp the friction ring to limit the rotation of the power generation compartment, thereby ensuring the stability of the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 Schematic diagram of the structure of the friction ring of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the locking device of the present invention.

[0027] In the figure: 1-column, 2-generator compartment, 3-fixed seat, 4-mounting seat, 5-reducer, 6-drive motor, 7-fixed sleeve, 8-connecting rod, 9-inner gear ring, 10-drive gear, 11-fixed rod, 12-inner cylinder, 13-circular plate, 14-friction ring, 141-circular ring, 142-tooth groove, 143-through hole, 15-locking device, 151-first housing, 152-second housing, 153-first fixed plate, 154-second fixed plate, 155-stabilizing plate, 156-pressure plate, 157-friction plate, 158-block, 159-connecting plate, 1 510-fixed pulley, 1511-first steel cable, 1512-winding motor, 1513-second steel cable, 1514-pulley, 1515-partition, 1516-slide rod, 1517-spring, 1518-guide wheel, 1519-hydraulic rod, 1520-first connecting rod, 1521-second connecting rod, 16-overhead bracket, 17-fan shaft, 18-blade mounting seat, 19-speed increaser, 20-generator, 21-electrical cabinet, 22-angle sensor, 23-connecting shaft, 24-wind guide plate, 25-control box, 26-reinforcement sleeve, 27-support ring. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4 The present invention provides a technical solution: a positioning device for a wind turbine head, comprising a column 1 and a power generation chamber 2, a fixed seat 3 is fixedly connected to the surface of the column 1 near the top, a mounting seat 4 is fixedly connected to the bottom of the power generation chamber 2, the mounting seat 4 is arranged on the top of the fixing seat 3 and is slidably connected to the fixing seat 3, a ball bearing is arranged between the mounting seat 4 and the fixing seat 3 to reduce friction, a reducer 5 and a drive motor 6 are arranged on the inner wall of the column 1 near the top, the output shaft end of the drive motor 6 is connected to the input shaft end of the reducer 5, the top of the fixing seat 3 is fixedly connected to The fixed sleeve 7, the top of the fixed sleeve 7 extends to the interior of the power generation chamber 2, the inner wall of the fixed sleeve 7 is fixedly connected to the inner gear ring 9 through the connecting rod 8, the center of the inner gear ring 9 coincides with the center of the column 1, and the output shaft end of the reducer 5 is fixedly connected to the driving gear 10, and the driving gear 10 is meshed with the inner gear ring 9. The rotation of the driving gear 10 drives the rotation of the inner gear ring 9, thereby realizing the rotation of the mounting seat 4, and finally realizing the rotation of the power generation chamber 2, which is convenient for adjustment. Since the reducer 5 and the drive motor 6 are arranged in the column 1, the internal space occupied by the power generation chamber 2 is reduced.

[0030] The inner wall of the column 1 is fixedly connected to the inner cylinder 12 through the fixing rod 11. The top of the inner cylinder 12 extends to the top of the column 1. The top of the inner cylinder 12 is fixedly connected to the circular plate 13. The inner wall of the fixing sleeve 7 and the side close to the top are fixedly connected to the friction ring 14. A locking device 15 is provided on one side of the circular plate 13. The working ends of the locking device 15 are located on both sides of the friction ring 14. The locking device 15 limits the rotation of the power generation compartment 2 by clamping the friction ring 14. The setting of the locking device 15 avoids the existing use of worm gears to limit the rotation, thereby ensuring the normal operation of the rotating mechanism.

[0031] The locking device 15 includes a first shell 151 and a second shell 152. A first fixing plate 153 and a second fixing plate 154 are vertically provided on one side of the first shell 151. A stabilizing plate 155 is provided between the first fixing plate 153 and the second fixing plate 154. There are two stabilizing plates 155 and they are symmetrically arranged. A pressure plate 156 is fixedly connected to one side of the stabilizing plate 155. A friction plate 157 and a block 158 are fixedly connected to one side of the pressure plate 156. A connecting plate 159 is fixedly connected to the other side of the stabilizing plate 155. The first steel cable 151 is fixedly connected between the two connecting plates 159. 1. A fixed pulley 1510 is provided in the middle of the first housing 151, and a winding motor 1512 is provided in the second housing 152. The working end of the winding motor 1512 is fixedly connected to the second steel cable 1513. A pulley 1514 is provided at one end of the second steel cable 1513. The first steel cable 1511 passes around one side of the pulley 1514. When the winding motor 1512 is tightening, it pulls the second steel cable 1513. The pulley 1514 pulls the first steel cable 1511 to make the two connecting plates 159 move closer to each other, thereby using the friction plate 157 to clamp the friction ring 14 and fix the machine head.

[0032] A partition 1515 is fixedly connected to one side of the second fixed plate 154, and a sliding rod 1516 is fixedly connected between the two sides of the partition 1515 and the inner wall of the first shell 151. The connecting plate 159 is slidably connected to the sliding rod 1516, and a spring 1517 is arranged between the partition 1515 and the connecting plate 159. The winding motor 1512 releases the second steel cable 1513, and the two connecting plates 159 are quickly reset under the action of the spring 1517, thereby facilitating the adjustment of the direction.

[0033] A guide wheel 1518 is provided on the surface of the first shell 151 on the side close to the second shell 152. There are two guide wheels 1518, which ensure that the pulling direction of the second steel cable 1513 is horizontal.

[0034] A hydraulic rod 1519 is rotatably provided on one side of the first fixed plate 153, and a first connecting rod 1520 is rotatably connected to one side of the pressure plate 156. A second connecting rod 1521 is provided on the first shell 151 and located on one side of the first connecting rod 1520. One end of the first connecting rod 1520 and the second connecting rod 1521 are rotatably connected to the working end of the hydraulic rod 1519. During the clamping process, the hydraulic rod 1519 works simultaneously, and the first connecting rod 1520 and the second connecting rod 1521 are used to support one side of the pressure plate 156, thereby improving the reliability of clamping.

[0035] The bottom of the inner wall of the power generation chamber 2 is fixedly connected with an overhead bracket 16, the top of the overhead bracket 16 is fixedly connected with a generator 20, a blade mounting seat 18 is provided on one side of the power generation chamber 2, the center of the blade mounting seat 18 is fixedly connected with a fan shaft 17, an electrical cabinet 21 and a speed increaser 19 are also provided in the power generation chamber 2, one end of the fan shaft 17 is transmission-connected to one end of the speed increaser 19, and the other end of the speed increaser 19 is transmission-connected to one end of the generator 20, a control box 25 and an angle sensor 22 are provided on the top of the inner wall of the power generation chamber 2, and one side of the top of the power generation chamber 2 is vertically rotated. It is connected to a connecting shaft 23, the top of which is fixedly connected to a wind guide plate 24, and the bottom of the connecting shaft 23 is fixedly connected to the detection end of the angle sensor 22. The wind blows the wind guide plate 24 to drive the connecting shaft 23 to rotate. Finally, driven by the wind, the side of the wind guide plate 24 is parallel to the wind direction. At this time, the angle sensor 22 records the current angle, and then drives the power generation chamber 2 to rotate through the driving motor 6 until the current angle of the angle sensor 22 is the same as the preset angle. The preset angle is the same as the angle recorded by the angle sensor 22 when the wind turbine blades are facing the wind direction.

[0036] The friction ring 14 includes a circular ring 141, both sides of which are flat. The inner wall of the circular ring 141 is provided with a tooth groove 142, and the surface of the circular ring 141 is provided with a through hole 143. The clamping block 158 is adapted to the tooth groove 142. When the pressure plate 156 clamps the friction ring 14, its clamping block 158 engages with the tooth groove 142, thereby improving the fixing effect of the friction ring 14.

[0037] A reinforcement sleeve 26 is provided at the bottom of the mounting seat 4, one side of the reinforcement sleeve 26 is slidably connected to the bottom of the fixing seat 3, a support ring 27 is fixedly connected to the inner wall of the fixing sleeve 7, and the bottom end of the circular plate 13 is slidably connected to the top of the support ring 27. The support of the support ring 27 to the circular plate 13 ensures the stability of the circular plate 13.

[0038] A method for positioning a wind turbine head, applicable to the aforementioned positioning device for a wind turbine head, comprises the following steps:

[0039] S1: Wind blows the wind deflector, and the angle sensor detects the wind direction through the connecting shaft;

[0040] S2, the control box controls the drive motor to start, and drives the drive gear to rotate through the reducer to realize the steering of the power generation chamber and make the fan blades face the wind direction;

[0041] S3. After the adjustment of the power generation chamber is completed, the winding motor is started, the pressure plate moves toward the friction ring, clamps the friction ring, and completes the positioning of the generator head.

[0042] In step S2, the steering angle of the power generation compartment is equal to the angle detected by the angle sensor.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a wind turbine head, comprising a column (1) and a power generation chamber (2), characterized in that: A fixing seat (3) is fixedly connected to the surface of the column (1) near the top, a mounting seat (4) is fixedly connected to the bottom of the power generation chamber (2), the mounting seat (4) is arranged on the top of the fixing seat (3) and is slidably connected to the fixing seat (3), a reducer (5) and a drive motor (6) are arranged on the inner wall of the column (1) near the top, a fixing sleeve (7) is fixedly connected to the top of the fixing seat (3), the top of the fixing sleeve (7) extends to the inside of the power generation chamber (2), the inner wall of the fixing sleeve (7) is fixedly connected to an inner gear ring (9) via a connecting rod (8), and the output shaft end of the reducer (5) is fixedly connected to a drive gear (10), the driving gear (10) is meshedly connected with the inner gear ring (9), the inner wall of the column (1) is fixedly connected to the inner cylinder (12) through a fixing rod (11), the top end of the inner cylinder (12) extends to the top of the column (1), the top end of the inner cylinder (12) is fixedly connected to a circular plate (13), the inner wall of the fixing sleeve (7) and the side close to the top are fixedly connected to a friction ring (14), a locking device (15) is provided on one side of the circular plate (13), the working ends of the locking device (15) are located on both sides of the friction ring (14), and the locking device (15) limits the rotation of the power generation chamber (2) by clamping the friction ring (14); The locking device (15) comprises a first shell (151) and a second shell (152), wherein a first fixing plate (153) and a second fixing plate (154) are vertically arranged in parallel on one side of the first shell (151), a stabilizing plate (155) is arranged between the first fixing plate (153) and the second fixing plate (154), two stabilizing plates (155) are provided and are symmetrically arranged, a pressure plate (156) is fixedly connected to one side of the stabilizing plate (155), and a friction plate (157) and a clamping block (158) are fixedly connected to one side of the pressure plate (156). The other side of the stabilizing plate (155) is fixedly connected to a connecting plate (159), a first steel cable (1511) is fixedly connected between the two connecting plates (159), a fixed pulley (1510) is provided in the middle of the first shell (151), a winding motor (1512) is provided in the second shell (152), a working end of the winding motor (1512) is fixedly connected to a second steel cable (1513), a pulley (1514) is provided at one end of the second steel cable (1513), and the first steel cable (1511) is passed around one side of the pulley (1514); The winding motor (1512) pulls the second steel cable (1513) during tightening operation, and the pulley (1514) pulls the first steel cable (1511), thereby bringing the two connecting plates (159) closer to each other, thereby clamping the friction ring (14) with the friction plate (157) to fix the machine head.

2. The positioning device for a wind turbine head according to claim 1, characterized in that: The bottom of the inner wall of the power generation chamber (2) is fixedly connected to an overhead bracket (16), and the top of the overhead bracket (16) is fixedly connected to a generator (20). A blade mounting seat (18) is provided on one side of the power generation chamber (2), and the center of the blade mounting seat (18) is fixedly connected to a fan shaft (17). An electrical cabinet (21) and a speed increaser (19) are also provided in the power generation chamber (2). One end of the fan shaft (17) is transmission-connected to one end of the speed increaser (19), and the other end of the speed increaser (19) is transmission-connected to one end of the generator (20). A control box (25) and an angle sensor (22) are provided on the top of the inner wall of the power generation chamber (2). A connecting shaft (23) is vertically rotatably connected to one side of the top of the power generation chamber (2), and a wind deflector (24) is fixedly connected to the top of the connecting shaft (23). The bottom end of the connecting shaft (23) is fixedly connected to the detection end of the angle sensor (22).

3. The positioning device for a wind turbine head according to claim 1, characterized in that: A partition (1515) is fixedly connected to one side of the second fixed plate (154), a sliding rod (1516) is fixedly connected between the two sides of the partition (1515) and the inner wall of the first shell (151), the connecting plate (159) is slidably connected to the sliding rod (1516), and a spring (1517) is provided between the partition (1515) and the connecting plate (159).

4. The positioning device for a wind turbine head according to claim 1, characterized in that: A guide wheel (1518) is provided on the surface of the first shell (151) on a side close to the second shell (152), and two guide wheels (1518) are provided.

5. The positioning device for a wind turbine head according to claim 4, characterized in that: A hydraulic rod (1519) is rotatably provided on one side of the first fixing plate (153), a first connecting rod (1520) is rotatably connected to one side of the pressure plate (156), a second connecting rod (1521) is provided on the first housing (151) and located on one side of the first connecting rod (1520), and one end of the first connecting rod (1520) and the second connecting rod (1521) are rotatably connected to the working end of the hydraulic rod (1519).

6. The positioning device for a wind turbine head according to claim 1, characterized in that: The friction ring (14) comprises a circular ring (141), both sides of the circular ring (141) are planes, the inner wall of the circular ring (141) is provided with a tooth groove (142), the surface of the circular ring (141) is provided with a through hole (143), and the clamping block (158) is adapted to the tooth groove (142).

7. The positioning device for a wind turbine head according to claim 1, characterized in that: A reinforcing sleeve (26) is provided at the bottom of the mounting seat (4), one side of the reinforcing sleeve (26) is slidably connected to the bottom of the fixing seat (3), a support ring (27) is fixedly connected to the inner wall of the fixing sleeve (7), and the bottom end of the circular plate (13) is slidably connected to the top of the support ring (27).

8. A method for positioning a wind turbine head, applicable to a positioning device for a wind turbine head according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Wind blows the wind deflector, and the angle sensor detects the wind direction through the connecting shaft; S2, the control box controls the drive motor to start, and drives the drive gear to rotate through the reducer to realize the steering of the power generation chamber and make the fan blades face the wind direction; S3. After the adjustment of the power generation chamber is completed, the winding motor is started, the pressure plate moves toward the friction ring, clamps the friction ring, and completes the positioning of the generator head.

9. The method for positioning a wind turbine head according to claim 8, characterized in that: In step S2, the steering angle of the power generation compartment is equal to the angle detected by the angle sensor.

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