Rotor locking device and usage method therefor, and wind turbine

Abstract

A rotor locking device, comprising a lock plate body (1), telescopic assemblies (2), connecting plates (3), and locking assemblies (4). The lock plate body (1) comprises a rotor fastening portion (11) and locking box portions (12), wherein the rotor fastening portion (11) is provided with rotor connection holes (111) for connecting to a rotor, and each locking box portion (12) is provided with locking box fastening holes (121) for mounting the locking assemblies (4). The connecting plates (3) partially penetrate the inside of the locking box portions (12) and are connected to the locking box portions (12) by means of the telescopic assemblies (2); each connecting plate (3) is provided with a lock pin hole (31) matching a rotor lock pin and connecting plate fastening holes (32) for mounting the locking assemblies (4). The locking assemblies (4) pass through the locking box fastening holes (121) and the connecting plate fastening holes (32). The solution has advantages such as enabling fastening at any rotor azimuth angle. In addition, the present invention further relates to a usage method for the rotor locking device and a wind turbine.

Description

A wind wheel locking device, a method of using the same and a wind turbine generator Cross-reference to Related Applications

[0001] The present application is based on and claims priority to Chinese Patent Application No. 202411114100.7, filed on August 14, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of wind power generation, in particular to a wind wheel locking device, a method of using the same and a wind turbine generator. BACKGROUND

[0003] In a wind turbine generator, if a hub or a part (including a large part) in the transmission chain of the wind turbine generator needs to be replaced, maintained or serviced, the hub will rotate under the action of wind load since the hub with blades is the input part of the transmission chain of the entire generator. In order to ensure the safety of the operator, the hub and the nacelle need to be kept relatively stationary at this time. The wind wheel locking device is a necessary device for ensuring the safety of the generator and the operator during maintenance of the generator, which is divided into high-speed end locking and low-speed end locking. The high-speed end locking device is located at the end of the transmission chain of the generator (the output end of the gear box). The load on the device is greatly reduced after being reduced by the gear set of the gear box, and the structure is relatively simple. Generally, normal maintenance and service operations can be carried out at the high-speed end locking when the gear box functions normally or within the safe load range. The low-speed end is located at the interface between the wind wheel and the nacelle, and directly bears the large load transmitted by the wind wheel. Generally, in the case of extreme load such as large wind speed, gear box jamming, etc. exceeding the load of the gear box or loss of function of the gear box, the replacement of parts and other operations need to be locked at the low-speed end to bear the large load.

[0004] The invention patent CN202110980588.1 discloses a wind turbine locking device, a plurality of wind wheel lock holes are arranged on the flange plate, and two wind wheel locks are inserted into the lock holes to lock after rotating a certain distance. The invention patent CN202011452980.0 discloses a wind turbine locking device and locking method, a plurality of wind wheel lock holes are arranged on the flange plate, and two wind wheel locks are inserted into the lock holes to lock after rotating a certain distance. The invention patent CN202010420185.7 discloses a flexible wind wheel locking device for a typhoon-resistant wind turbine generator braking system, a pulley block and a spring structure rotating buffer mechanism are designed, a locking pin is inserted into a lock hole to lock after the fan rotates to a certain angle, and the wind energy is controlled to swing within a certain angle range. The invention patent 202310671013.0 discloses a main shaft locking disc that can be combined and disassembled, the outer edge is a gear structure, the fixed lock is a matching gear locking device, and the main shaft flange plate function can be locked by a very small rotation through the outer edge tooth groove meshing limiting. However, the above-mentioned devices all need to rotate a certain distance to be locked, and cannot be locked at will at the local position.

[0005] The invention patent 202010368454.X discloses a wind wheel locking device and wind wheel, two annular tracks are designed on the locking disc on the wind wheel, a clamping (along the radial direction of the locking disc) annular track tool is designed on the main seat or bearing seat, the rotation of the wind wheel is prevented through the friction force of the clamping annular track, and the clamping annular track is provided with a clamping groove at intervals, so that the function of completely locking the wind wheel can be realized. The device can limit (similar to a brake) the rotation of the wind wheel at will through the friction force at any position, but still needs to rotate a certain distance to be completely locked, and cannot guarantee complete locking at any position. SUMMARY

[0006] The purpose of the present application is to provide a wind wheel locking device, a use method thereof and a wind turbine.

[0007] The purpose of the present application can be achieved by the following technical scheme: a wind wheel locking device, comprising a lock plate body, an extension assembly, a connecting plate and a locking assembly.

[0008] The lock plate body comprises a wind wheel fastening part and a locking box body part, the wind wheel fastening part is provided with a connecting hole, and the locking box body part is provided with a locking box body fastening hole for mounting the locking assembly;

[0009] The connecting plate is partially arranged in the locking box body part and connected with the locking box body part through the extension assembly, the connecting plate is provided with a lock pin hole matched with a wind wheel lock pin and a connecting plate fastening hole for mounting the locking assembly;

[0010] The locking assembly is arranged on the locking box fastening hole and the connecting plate fastening hole.

[0011] In addition, the lock plate body is symmetrically provided with a locking box part at both ends, the locking box part is provided with a first locking box fastening hole and a second locking box fastening hole, the first locking box fastening hole is a long circular arc hole or a waist-shaped hole, and the second locking box fastening hole is an arc-shaped notch provided at the end of the locking box part.

[0012] Both ends of the locking box part are correspondingly connected with a connecting plate through an extension assembly, two connecting plate fastening holes corresponding to the first locking box fastening hole and the second locking box fastening hole are provided on the connecting plate, and the connecting plate fastening holes are long circular arc holes or waist-shaped holes.

[0013] In addition, the first locking box fastening hole and the connecting plate fastening hole are long circular arc holes, and the first locking box fastening hole, the second locking box fastening hole and the connecting plate fastening hole are coaxially arranged.

[0014] In addition, the first locking box fastening hole, the second locking box fastening hole and the connecting plate fastening hole are coaxially arranged with the main shaft.

[0015] In addition, the first locking box fastening hole, the second locking box fastening hole and the connecting plate fastening hole have the same width, the second locking box fastening hole and the connecting plate fastening hole are matched in shape at the end, and the locking assembly can be arranged on the first locking box fastening hole and the connecting plate fastening hole or on the second locking box fastening hole and the connecting plate fastening hole.

[0016] In addition, the first locking box fastening hole and the connecting plate fastening hole are long circular arc holes with the same central angle.

[0017] In addition, the locking assembly comprises an upper circular arc wedge block, a lower circular arc pad block, a flat pad block and a wedge-shaped pad block.

[0018] The upper circular arc wedge block, the lower circular arc pad block, the flat pad block and the wedge-shaped pad block can form a cross-sectional structure matched with the long circular arc hole, and the surface of the wedge-shaped pad block protrudes from the surfaces of the upper circular arc wedge block, the lower circular arc pad block and the flat pad block.

[0019] In addition, the upper circular arc wedge block, the wedge-shaped pad block, the plurality of flat pad blocks and the lower circular arc pad block are sequentially arranged, one surface of the wedge-shaped pad block is in contact with the upper circular arc wedge block, the other surface is in contact with the flat pad block, and both ends of the wedge-shaped pad block can protrude out of the locking box fastening hole and the connecting plate fastening hole.

[0020] In addition, both ends of the upper circular arc wedge block, the wedge-shaped pad block, the flat pad block and the lower circular arc pad block can protrude out of the locking box fastening hole and the connecting plate fastening hole.

[0021] In addition, the upper circular arc wedge block, the wedge-shaped pad block, the flat pad block and the lower circular arc pad block are all provided with a handle.

[0022] In addition, the upper circular arc wedge, the wedge-shaped pad, the flat pad, and the lower circular arc pad are provided with positioning blocks for preventing them from being separated from the fastening holes.

[0023] In addition, the locking assembly further comprises a mounting arm, a screw rod tensioning piece, a fastening head, and a universal joint. The mounting arm is arranged on the upper circular arc wedge and is in threaded connection with the screw rod tensioning piece. One end of the screw rod tensioning piece is connected with the wedge-shaped pad through the universal joint, and the other end is provided with the fastening head. The fastening head is twisted by a torque wrench tool to drive the screw rod tensioning piece to rotate, so that the screw rod tensioning piece translates along the mounting arm, and the wedge-shaped pad is disassembled, which is convenient and simple. Moreover, after the locking assembly is installed, double self-locking is formed, including wedge-shaped pad self-locking and screw rod self-locking.

[0024] In addition, the telescopic assembly comprises an upper base, a lower base, and a telescopic rod.

[0025] The upper base is arranged on the locking box body, the lower base is arranged on the connecting plate, one end of the telescopic rod is connected with the upper base, and the other end is connected with the lower base.

[0026] In addition, the locking plate body further comprises a hoisting installation part, which is located above the wind wheel fastening part and between the two end locking box body parts.

[0027] In addition, 1-2 hoisting points are arranged on the hoisting installation part.

[0028] In addition, the hoisting installation part is an arc-shaped plate, and a plurality of connecting holes are uniformly distributed along the circumferential direction of the arc-shaped plate.

[0029] In addition, the connecting holes correspond to the bolt holes on the flange plate of the low-speed main shaft of the wind wheel.

[0030] In addition, the corresponding central angles of the fastening holes of the first locking box body and the fastening holes of the connecting plate at both ends are not less than the corresponding central angles of the adjacent bolt holes of the flange plate of the low-speed main shaft of the wind wheel, that is, the size of the long arc-shaped hole or the waist-shaped hole is designed according to the spacing of the adjacent bolt holes of the main shaft flange plate, so as to ensure that at least one group of adjacent main shaft flange plate bolt holes is within the long arc-shaped hole or the waist-shaped hole.

[0031] In addition, the wind wheel fastening part is fastened by being installed through the connecting holes and the bolts on the back surface of the flange plate of the low-speed main shaft of the wind wheel.

[0032] A use method of the above-mentioned wind wheel locking device, comprising the following steps:

[0033] S1: The connecting plate is contracted into the locking plate body through the telescopic assembly;

[0034] S2: The locking plate body is installed to the end of the wind wheel-main shaft fastening bolt of the main shaft flange plate and is fastened;

[0035] S3: Adjusting the telescopic assembly to extend the connecting plate outside the locking box body, aligning the locking pin hole with the wind wheel lock locking pin, then inserting the wind wheel lock locking pin, and then disconnecting the telescopic assembly;

[0036] S4: According to the size of the long-arc-shaped hole or the waist-shaped hole, different locking assemblies are combined;

[0037] S5: Through the adaptation of the locking assembly, the fastening of the connecting plate and the locking plate body is realized.

[0038] A wind turbine generator set comprising the wind wheel locking device.

[0039] Compared with the prior art, the present application has the following beneficial effects:

[0040] 1. The device can reliably lock the wind wheel at any azimuth angle of the wind wheel;

[0041] 2. The fastening hole and the locking device are reliable in stress, and can be adapted to the long-arc-shaped hole or the waist-shaped hole according to the need, and the wedge-shaped pad is self-locked after being stressed to prevent loosening;

[0042] 3. The wedge-shaped pad is installed by the installation arm and the screw rod mechanism pre-tightening force, which is convenient to disassemble and assemble, real-time self-locking, and reliable in structure;

[0043] 4. The device can realize the simultaneous linkage of the double wind wheel locking pins, and the double locking directly bears the wind wheel load, which is more reliable;

[0044] 5. The device is a combined component, which is convenient to disassemble and assemble, and can be reused;

[0045] 6. The device can lock the wind wheel from the low-speed end when the wind power equipment is assembled, the major parts are replaced, and the gear box is jammed. BRIEF DESCRIPTION OF DRAWINGS

[0046] Fig. 1 is a schematic view of the installation position of the wind wheel locking device of the present application;

[0047] Fig. 2 is a schematic view of the structure of the wind wheel locking device of the present application;

[0048] Fig. 3 is a schematic view of the structure of the locking plate body of the present application;

[0049] Fig. 4 is a schematic view of the structure of the telescopic assembly of the present application;

[0050] Fig. 5 is a schematic view of the structure of the connecting plate of the present application;

[0051] Fig. 6 is a schematic view of the structure of a locking assembly of the present application;

[0052] Fig. 7 is a schematic view of the compression fastening principle of the device when the left side is subjected to the counterclockwise wind wheel load;

[0053] Figure 8 is a left side tension fastening principle diagram of the device under the clockwise wind wheel load;

[0054] Figure 9 is a two-way double-lock common bearing locking principle diagram of the device;

[0055] Figure 10 is a mounting detail diagram of the device;

[0056] Figure 11 is a linkage bearing principle diagram of the device in use;

[0057] Figure 12 is a counterclockwise wind wheel load optimal use state diagram of the device;

[0058] Figure 13 is a clockwise wind wheel load optimal use state diagram of the device;

[0059] Figure 14 is a structure schematic diagram of another locking assembly of the device;

[0060] In the figure: 1 - lock plate body, 11 - wind wheel fastening part, 111 - connecting hole, 12 - locking box body part, 121 - locking box body fastening hole, 1211 - first locking box body fastening hole, 1212 - second locking box body fastening hole, 13 - hoisting and mounting part, 2 - telescopic assembly, 21 - upper base, 22 - lower base, 23 - telescopic rod, 3 - connecting plate, 31 - lock pin hole, 32 - connecting plate fastening hole, 33 - telescopic assembly connecting point, 4 - locking assembly, 41 - upper circular arc wedge block, 42 - lower circular arc pad block, 43 - flat pad block, 44 - wedge-shaped pad block, 45 - mounting arm, 46 - screw rod tensioning piece, 47 - fastening head, 48 - universal joint, 4-1 - first locking piece, 4-2 - second locking piece, 4-3 - third locking piece, 4-4 - fourth locking piece, a - wind wheel locking device, b - wind turbine, c - wind wheel lock, c1 - wind wheel lock lock pin, d - main shaft, e - wind wheel-main shaft fastening bolt. DETAILED DESCRIPTION

[0061] The application will be described in detail below with reference to the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the application, and detailed implementation methods and specific operation processes are given, but the protection scope of the application is not limited to the following embodiments.

[0062] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0063] Some embodiments of the application will be described in detail below with reference to the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0064] Embodiment 1

[0065] The wind wheel locking device comprises a lock plate body 1, an extension assembly 2, a connecting plate 3 and a locking assembly 4. The lock plate body 1 comprises a wind wheel fastening part 11 and a locking box body part 12. The wind wheel fastening part 11 is provided with connecting holes 111. The locking box body part 12 is provided with locking box body fastening holes 121. The connecting plate is provided with a lock pin hole 31 and connecting plate fastening holes 32.

[0066] The wind wheel fastening part 11 is connected with the wind wheel main shaft through the connecting holes 111. The locking box body part 12 is connected with the connecting plate 3 through the extension assembly 2. The connecting plate 3 is partially arranged in the locking box body part 12. The locking box body part 12 and the connecting plate 3 are fastened through the locking assembly 4 arranged in the locking box fastening holes 121 and the connecting plate fastening holes 32. The wind wheel lock pin can be inserted into the lock pin hole 31.

[0067] Embodiment 2

[0068] A wind wheel locking device a is shown in Fig. 1. The wind wheel locking device a is connected with a wind wheel main shaft d and a wind wheel lock c respectively. The wind wheel main shaft d is arranged inside a main shaft support seat. The wind wheel lock c is arranged outside the main shaft support seat. The specific structure of the wind wheel locking device a is shown in Fig. 2. The wind wheel locking device a comprises a lock plate body 1, an extension assembly 2, a connecting plate 3 and a locking assembly 4.

[0069] The specific structure of the lock plate body 1 is shown in Fig. 3. The lock plate body 1 comprises a wind wheel fastening part 11, a locking box body part 12 and a hoisting installation part 13. The wind wheel fastening part 11 is arranged at the lower edge of the lock plate body 1 and has an arc structure. A plurality of connecting holes 111 are uniformly distributed along the circumferential direction of the wind wheel fastening part 11. The wind wheel fastening part 11 is fastened with the wind wheel low-speed main shaft flange through the connecting holes 111. The locking box body part 12 is symmetrically arranged at the left and right ends of the lock plate body 1. The locking box body part 12 is provided with locking box body fastening holes 121. The locking box body fastening holes 121 comprise first locking box body fastening holes 1211 and second locking box body fastening holes 1212. The first locking box body fastening holes 1211 are long circular arc holes. The second locking box body fastening holes 1212 are arc-shaped notches arranged at the ends of the locking box body part 12. The hoisting installation part 13 is arranged above the wind wheel fastening part 11 and between the two locking box body parts 12. The hoisting installation part 13 is provided with 1-2 hoisting points.

[0070] The specific structure of the extension assembly 2 is shown in Fig. 4. The extension assembly 2 comprises an upper base 21, a lower base 22 and an extension rod 23. One end of the extension rod 23 is connected with the upper base 21. The other end of the extension rod 23 is connected with the lower base 22.

[0071] The specific structure of the connecting plate 3 is shown in Fig. 5. The connecting plate 3 comprises an arc-shaped plate body and an extension assembly connecting point 33 arranged outside the arc-shaped plate body. The arc-shaped plate body is provided with a lock pin hole 31 and two connecting plate fastening holes 32. The two connecting plate fastening holes 32 are long circular arc holes.

[0072] The specific structure of the locking assembly 4 is shown in FIG. 6, which includes an upper circular arc wedge block 41, a wedge-shaped pad block 44, one or more flat pad blocks 43, and a lower circular arc pad block 42 arranged in sequence. Each module can be combined to form a cross-sectional structure matching the long circular arc hole to achieve a fastening effect, and the size of the corresponding central angle can be adjusted by adjusting the number of flat pad blocks 43.

[0073] In this embodiment, the upper base 21 is installed on the locking box body 12, the lower base 22 is installed on the connecting plate 3, the connecting plate 3 is partially arranged in the locking box body 12, and the connecting plate 3 is connected with the locking box body 12 through the telescopic assembly connecting point 33 and the telescopic assembly 2. The first locking box body fastening hole 1211 and the second locking box body fastening hole 1212 are coaxially arranged with the connecting plate fastening hole 32, the size of the first locking box body fastening hole 1211 is the same as that of the connecting plate fastening hole 32, and the size of the end of the second locking box body fastening hole 1212 is the same as that of the connecting plate fastening hole 32. After adjusting the relative position between the connecting plate 3 and the locking box body 12 through the telescopic assembly 2, the first locking box body fastening hole 1211 and the corresponding connecting plate fastening hole 32, and the second locking box body fastening hole 1212 and the corresponding connecting plate fastening hole 32 will form corresponding long circular arc holes, and the locking assembly 4 with a corresponding cross-sectional size is arranged in the corresponding long circular arc hole to achieve fastening.

[0074] The wind wheel locking device can be used to connect the wind wheel main shaft (through the connecting hole 111) and the wind wheel lock pin (through the lock pin hole 31), and can realize reliable connection of the wind wheel main shaft and the wind wheel lock pin on both sides in any azimuth through the fastening device, thereby preventing rotation of the wind wheel, and is particularly suitable for reliable locking of the wind wheel main shaft in the case of a locked gear box of a fan.

[0075] Embodiment 3

[0076] A wind wheel locking device includes a locking plate body 1, a telescopic assembly 2, a connecting plate 3, and a locking assembly 4.

[0077] Specifically:

[0078] The locking plate body 1 includes a wind wheel fastening part (wind wheel fastening part 11), a locking box body part (locking box body part 12), and a hoisting and installation part (hoisting and installation part 13). The lower edge of the wind wheel fastening part (wind wheel fastening part 11) is bolted and fastened to the back surface of the flange plate of the wind wheel low-speed main shaft. The two ends of the locking box body part (locking box body part 12) are fastened to the connecting plate 3 through the locking assembly 4 to transfer the load of the wind wheel.

[0079] The telescopic assembly 2 connects the locking plate body 1 and the connecting plate 3 through the upper base 21, the lower base 22, and the telescopic rod 23, and is used to completely retract the connecting plate 3 into the locking box body part 12 (disassembly) or to finely adjust the position of the connecting plate 3 so that the wind wheel lock pin is inserted into the lock pin hole 31 of the plate.

[0080] Connecting plate 3: contains both lock pin hole 31 and fastening waist hole (connecting plate fastening hole 32), mainly operates in the locking box part 12 of the lock plate body 1, the fastening waist hole is used for connecting the locking assembly 4, and the locking assembly 4 bears the load transmitted from the lock plate body 1, and the lock pin hole 31 is used for matching the wind wheel lock pin, and is used for transmitting the load transmitted by the lock plate body 1 to the wind wheel lock pin.

[0081] Locking assembly 4: composed of upper circular arc wedge block 41, lower circular arc pad block 42, flat pad block 43 and wedge-shaped pad block 44, the circular arc pad blocks at both ends can ensure that the flat pad block 43 and the wedge-shaped pad block 44 are parallel, and the relative position of the lock plate body 1 and the connecting plate 3 is freely combined and locked, so that the lock plate body 1 and the connecting plate 3 are tightly connected.

[0082] In the embodiment, the locking principle of the fastening waist hole is as follows:

[0083] A, single compression fastening: as shown in FIG. 7, when subjected to counterclockwise wind wheel load, the left wind wheel lock pin provides clockwise supporting force to the first locking assembly 4 (first locking piece 4-1) of the connecting plate 3, which reliably supports the counterclockwise wind wheel load pressure transmitted through the lock plate body 1.

[0084] B, single tension fastening: as shown in FIG. 8, when subjected to clockwise wind wheel load, the left wind wheel lock pin provides supporting force tension to the second locking assembly 4 (second locking piece 4-2) of the connecting plate 3, which reliably pulls the clockwise wind wheel load pressure transmitted through the lock plate body 1.

[0085] In the embodiment, as shown in FIG. 9, the locking principle of the fastening waist hole bidirectional double lock common bearing is as follows:

[0086] A, when subjected to counterclockwise wind wheel load: the first locking piece 4-1 transmits pressure to the left wind wheel lock pin through the left connecting plate 3 to bear pressure; the third locking piece 4-3 transmits tension to the right connecting plate 3 to the right wind wheel lock pin to bear tension. Both sides of the wind wheel lock pin are under stress.

[0087] B, when subjected to clockwise wind wheel load: the fourth locking piece 4-4 transmits pressure to the right wind wheel lock pin through the right connecting plate 3 to bear pressure; the second locking piece 4-2 transmits tension to the left connecting plate 3 to the left wind wheel lock pin to bear tension. Both sides of the wind wheel lock pin are under stress.

[0088] The wind wheel locking device of the embodiment has the following advantages:

[0089] (1) It can be installed at any azimuth angle of the wind wheel:

[0090] A, the two connecting plates 3 are completely retracted into the lock plate body 1 through the two-sided telescopic assemblies 2;

[0091] B, the lifting point of the lifting lock plate body 1 is lifted and installed to the end of the wind wheel-main shaft fastening bolt e of the main shaft d flange plate, and is fastened;

[0092] C, adjust the two sides of the telescopic assembly 2 to extend the connecting plate 3 outside the box body, and align the lock pin hole 31 with the wind wheel lock lock pin c1, and then insert the wind wheel lock lock pin c1 (as shown in FIG. 10);

[0093] D, according to the size of the two sides of the waist-shaped hole, combine different locking assemblies 4 to adapt (the position of the wind wheel-main shaft fastening bolt e can be offset at any angle);

[0094] E, through the adaptation of the locking assembly 4, the fastening of the connecting plate 3 (connected with the wind wheel lock lock pin c1) and the lock plate body 1 is realized, and the fastening of any wind wheel azimuth angle is realized.

[0095] (2) The waist-shaped hole and the locking assembly 4 are reliable in stress:

[0096] A, the waist-shaped hole design is adopted for the installation position of the locking assembly 4, which is composed of a slidable semicircle, a flat pad and a wedge-shaped pad. The upper and lower semicircle structures can rotate in the waist-shaped hole arc to ensure that the contact surfaces of the internal flat pad and wedge-shaped pad are tightly combined and uniformly stressed;

[0097] B, the flat surfaces of the locking assembly 4 are large in area and can bear strong load, so the structure is safe and reliable;

[0098] C, the wedge-shaped pad is self-locked after being stressed to prevent loosening.

[0099] (3) It can realize simultaneous linkage bearing of double wind wheel lock pins, and double locks directly bear all loads of the wind wheel, which is more reliable (as shown in FIG. 11):

[0100] A, when subjected to counterclockwise wind wheel load, the first locking piece 4-1 and the third locking piece 4-3 generate support force on the lock plate body 1 (left and right wind wheel lock lock pins c1 act simultaneously), preventing the wind wheel from rotating counterclockwise;

[0101] B, when subjected to clockwise wind wheel load, the second locking piece 4-2 and the fourth locking piece 4-4 generate support force on the lock plate body 1 (left and right wind wheel lock lock pins c1 act simultaneously), preventing the wind wheel from rotating clockwise.

[0102] (4) The combined components are easy to disassemble and assemble, and can be reused:

[0103] The device of the embodiment is composed of a lock plate body 1, a telescopic assembly 2, a connecting plate 3 and a locking assembly 4, which is easy to disassemble and assemble and can be reused.

[0104] The overall working principle of the wind wheel locking device of the embodiment is shown in FIGS. 12 and 13:

[0105] When the wind wheel is loaded counterclockwise, the first locking member 4-1 and the third locking member 4-3 transmit the load to the wind wheel lock pin, achieving the function of locking the counterclockwise rotation of the wind wheel. When the wind wheel is loaded clockwise, the second locking member 4-2 and the fourth locking member 4-4 transmit the load to the wind wheel lock pin, achieving the function of locking the clockwise rotation of the wind wheel.

[0106] Embodiment 4

[0107] A wind wheel locking device, as shown in FIG. 14, the locking assembly 4 includes an upper circular arc wedge block 41, a lower circular arc pad 42, a flat pad 43, a wedge-shaped pad 44, a mounting arm 45, a screw rod tensioning member 46, a fastening head 47 and a universal joint 48.

[0108] Specifically, the upper circular arc wedge block 41, the wedge-shaped pad 44, the plurality of flat pads 43 and the lower circular arc pad 42 are sequentially arranged, one side of the wedge-shaped pad 44 is in contact with the upper circular arc wedge block 41, and the other side is in contact with the flat pad 43. The mounting arm 45 is arranged on the upper circular arc wedge block 41 and is threadedly connected with the screw rod tensioning member 46, one end of the screw rod tensioning member 46 is connected with the wedge-shaped pad 44 through the universal joint 48, and the other end is provided with the fastening head 47. The rest is the same as Embodiment 3.

[0109] The above description of the embodiments is to facilitate the understanding and use of the invention by those of ordinary skill in the art. Those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without having to go through creative labor. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art can make improvements and modifications to the invention without departing from the scope of the invention.

Claims

1. A wind wheel locking device, comprising a locking plate body (1), an extension assembly (2), a connecting plate (3) and a locking assembly (4); The locking plate body (1) comprises a wind wheel fastening part (11) and a locking box body part (12), the wind wheel fastening part (11) is provided with a connecting hole (111), and the locking box body part (12) is provided with a locking box body fastening hole (121) for installing the locking assembly (4); The connecting plate (3) is partially arranged in the locking box body part (12) and connected with the locking box body part (12) through the extension assembly (2), the connecting plate (3) is provided with a locking pin hole (31) matched with a wind wheel lock locking pin and a connecting plate fastening hole (32) for installing the locking assembly (4); The locking assembly (4) is arranged on the locking box body fastening hole (121) and the connecting plate fastening hole (32).

2. The wind wheel locking device according to claim 1, wherein The locking plate body (1) is symmetrically provided with the locking box body part (12) at both ends, the locking box body part (12) is provided with a first locking box body fastening hole (1211) and a second locking box body fastening hole (1212), the first locking box body fastening hole (1211) is a long circular arc hole, and the second locking box body fastening hole (1212) is an arc-shaped notch arranged at the end of the locking box body part (12); Both ends of the locking box body part (12) are correspondingly connected with the connecting plate (3) through the extension assembly (2), both ends of the connecting plate (3) are provided with two connecting plate fastening holes (32) corresponding to the first locking box body fastening hole (1211) and the second locking box body fastening hole (1212) respectively, and the connecting plate fastening holes (32) are long circular arc holes. The first locking box body fastening hole (1211), the second locking box body fastening hole (1212) and the connecting plate fastening hole (32) are coaxially arranged.

3. The wind wheel locking device according to claim 2, wherein, The first locking box body fastening hole (1211), the second locking box body fastening hole (1212) and the connecting plate fastening hole (32) have the same width, the central angle of the first locking box body fastening hole (1211) is equal to that of the connecting plate fastening hole (32), the second locking box body fastening hole (1212) is matched with the end shape of the connecting plate fastening hole (32), and the locking assembly (4) can be arranged on the first locking box body fastening hole (1211) and the connecting plate fastening hole (32) or on the second locking box body fastening hole (1212) and the connecting plate fastening hole (32).

4. The wind wheel locking device according to claim 3, wherein The wind wheel fastening part (11) is provided with a plurality of connecting holes (111) corresponding to wind wheel low-speed main shaft flange bolt holes, the wind wheel fastening part (11) is connected and fastened with the wind wheel low-speed main shaft flange through the connecting holes (111), and the central angles of the first locking box body fastening hole (1211) and the connecting plate fastening hole (32) at both ends are not less than the central angles of the adjacent bolt holes of the wind wheel low-speed main shaft flange at both ends.

5. The wind wheel locking device of claim 3, wherein, The locking assembly (4) comprises an upper circular-arc wedge block (41), a lower circular-arc cushion block (42), a flat cushion block (43) and a wedge-shaped cushion block (44); The upper circular-arc wedge block (41), the lower circular-arc cushion block (42), the flat cushion block (43) and the wedge-shaped cushion block (44) can form a cross-section structure matching the long circular-arc hole, and the surface of the wedge-shaped cushion block (44) protrudes from the surfaces of the upper circular-arc wedge block (41), the lower circular-arc cushion block (42) and the flat cushion block (43).

6. The wind wheel locking device of claim 5, wherein, The upper circular-arc wedge block (41), the wedge-shaped cushion block (44), a plurality of flat cushion blocks (43) and the lower circular-arc cushion block (42) are sequentially arranged, one surface of the wedge-shaped cushion block (44) is in contact with the upper circular-arc wedge block (41), and the other surface is in contact with the flat cushion block (43), and both ends of the wedge-shaped cushion block (44) can protrude out of the locking box body fastening hole (121) and the connecting plate fastening hole (32).

7. The wind wheel locking device of claim 5, wherein, The locking assembly (4) further comprises a mounting arm (45), a screw rod tensioning piece (46), a fastening head (47) and a universal joint (48); The mounting arm (45) is arranged on the upper circular-arc wedge block (41) and is in threaded connection with the screw rod tensioning piece (46), one end of the screw rod tensioning piece (46) is connected with the wedge-shaped cushion block (44) through the universal joint (48), and the other end is provided with the fastening head (47).

8. The wind wheel locking device of claim 1, wherein, The telescopic assembly (2) comprises an upper base (21), a lower base (22) and a telescopic rod (23); The upper base (21) is arranged on the locking box body part (12), the lower base (22) is arranged on the connecting plate (3), and the telescopic rod (23) is connected with the upper base (21) at one end and connected with the lower base (22) at the other end; The lock plate body (1) further comprises a hoisting installation part (13), which is located above the wind wheel fastening part (11) and between the two locking box body parts (12) at both ends, and 1-2 hoisting points are arranged on the hoisting installation part (13).

9. A method for using the wind wheel locking device according to any one of claims 1-8, comprising the following steps: S1: retracting the connecting plate (3) into the lock plate body (1) through the telescopic assembly (2); S2: mounting the lock plate body (1) on the main shaft flange and fastening; S3: adjusting the telescopic assembly (2) to extend the connecting plate (3) out of the locking box body part (12), aligning the lock pin hole (31) with the wind wheel lock pin, then inserting the wind wheel lock pin, and then disconnecting the telescopic assembly (2); S4: fastening the connecting plate (3) and the lock plate body (1) through the locking assembly (4).

10. A wind turbine generator, comprising the wind wheel locking device according to any one of claims 1-8.

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