Locking device and wind driven generator

Abstract

The utility model discloses a locking device and a wind driven generator, the locking device comprises a locking main body, a locking piece, a driving part and a fastening piece, the locking main body is provided with a hollow cavity, a first opening and a second opening, and the first opening and the second opening communicate with the hollow cavity; the locking piece is arranged in the first opening in a sliding mode and provided with a channel communicating with the hollow cavity and the external environment. The first end of the driving part is detachably connected to the exterior of the locking main body and is adjacent to the second opening, and the second end of the driving part penetrates through the second opening and penetrates into the channel; and the fastener is detachably connected with the second end of the driving part. According to the technical scheme, the driving component can be conveniently disassembled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation equipment, in particular to a locking device and a wind power generator. BACKGROUND

[0002] In the related art, the locking device drives the locking piece into the hole position of the blade root by the cylinder to block the rotation of the blade.

[0003] However, the connection position of the piston rod of the cylinder and the locking piece is usually located inside the locking main body. When the locking device is maintained or the cylinder is repaired, the locking main body needs to be disassembled to remove the cylinder, which is inconvenient to disassemble. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a locking device and a wind power generator, which can conveniently disassemble the driving component.

[0005] To achieve the above purpose, the present application provides a locking device, which comprises: a locking main body, the locking main body having a hollow cavity and a first opening and a second opening communicating with the hollow cavity; a locking piece, the locking piece being slidably arranged in the first opening, the locking piece having a passage communicating the hollow cavity with the external environment; a driving component, the first end of the driving component being detachably connected to the outside of the locking main body and adjacent to the second opening, the second end of the driving component passing through the second opening and entering the passage; and a fastener, the fastener being detachably connected with the second end of the driving component.

[0006] The technical scheme provided by the present application communicates the inside of the locking main body with the external environment by providing a passage on the locking piece and utilizing the passage, and the first end of the driving component is detachably connected to the outside of the locking main body, and the second end of the driving component passes through the second opening and connects with the fastener in the passage. In this way, when the driving component needs to be replaced, the fastener can be operated from the outside of the locking main body or through the passage to separate the fastener from the second end of the driving component, then the first end of the driving component is disassembled from the outside of the locking main body, and then the first end of the driving component is grabbed and moved outward to separate the driving component from the locking main body, so that the driving component can be removed without disassembling the locking main body, which is simple and convenient to operate.

[0007] Similarly, when the connection between the driving component and the locking piece needs to be regularly maintained, the worker only needs to pre-tighten the fastener from the outside of the locking main body or through the passage, which also does not need to disassemble the locking main body, simplifying the maintenance operation and improving the maintenance efficiency.

[0008] Optionally, the fastener has a locking portion and a pressing portion, wherein the locking portion is threadedly connected with the second end of the driving component, and a projection of the pressing portion on the locking member at least partially overlaps the locking member in a sliding direction of the locking member towards the second opening, so that the pressing portion abuts against the locking member and pushes the locking member to retract during the driving of the driving component to retract the fastener.

[0009] By the above scheme, when the driving component drives the second end to retract, the second end of the driving component can at least partially abut against the locking member through the pressing portion of the fastener, thereby driving the locking member to retract, to realize the unlocking function. Moreover, the second end of the driving component and the fastener are connected in a threaded manner, which is simple to disassemble and maintain, and the threaded connection is less likely to directly fall off, thereby improving the connection stability of the driving component and the locking member.

[0010] Optionally, one of the second end of the driving component and the locking member is provided with a first limiting portion, and the other is provided with a first limiting groove, and the first limiting portion and the first limiting groove are matched to block the rotation of the second end of the driving component relative to the locking member; one of the locking member and the locking main body is provided with a second limiting portion, and the other is provided with a second limiting groove, and the second limiting portion and the second limiting groove are matched to block the rotation of the locking member relative to the locking main body.

[0011] By the above scheme, when the fastener is pre-tightened, the rotating force applied to the fastener can be transmitted to the locking member through the cooperation of the first limiting portion and the first limiting groove, and then transmitted to the locking main body through the cooperation of the second limiting portion and the second limiting groove, thereby avoiding the rotation of the driving component to cause damage to the driving component.

[0012] Optionally, the first limiting groove is arranged on the outer wall surface of the second end of the driving component; the first limiting portion is arranged at one end of the channel adjacent to the second opening, and the first limiting portion extends inwardly from the inner wall surface of the channel in the radial direction of the channel, and after the second end of the driving component penetrates into the channel, the first limiting portion cooperates with the first limiting groove.

[0013] By the above scheme, not only can the force transmitted by the fastener be transmitted to the locking member to prevent damage to the driving component, but also when the driving component drives the second end to extend out, the locking member can also drive the locking member to extend out to realize the locking function through the cooperation of the first limiting portion and the first limiting groove, without the need for additional pushing and reducing, thereby simplifying the product structure.

[0014] Optionally, the second limiting groove is arranged on the outer wall surface of the locking member; the second limiting portion is arranged on the locking main body, and the second limiting portion penetrates through the side wall of the locking main body from the outside of the locking main body and extends into the second limiting groove.

[0015] Through the above scheme, the second limiting part can be installed from the outside of the locking main body, without the need to operate in the narrow space in the locking main body, facilitating installation operation. Moreover, it is also convenient to directly observe from the outside of the locking main body whether the second limiting part is in place, facilitating later maintenance and detection operation.

[0016] Optionally, along the sliding direction of the locking piece towards the second opening, the channel has a first hole position, a second hole position and a third hole position with diameters successively decreasing; the second end of the driving component penetrates into the second hole position through the third hole position; the locking part penetrates into the second hole position through the first hole position and is threadedly connected with the second end of the driving component; and the abutting part is located in the first hole position and abuts against the stepped surface between the first hole position and the second hole position.

[0017] Through the above scheme, the second end of the driving component can penetrate into the channel and not extend out of the channel, and the second end of the driving component is connected with the fastener in the channel. In this way, the worker can pre-tighten, maintain and disassemble the fastener in the channel from the outside of the locking main body through the channel, without the need to disassemble the locking main body. Moreover, the fastener is located inside the channel, avoiding the problem of wear or friction and falling off of the fastener during locking when the fastener is arranged outside.

[0018] Optionally, the driving component comprises a driving body and a telescopic rod connected with the driving body, the driving body constitutes the first end of the driving component, and the free end of the telescopic rod constitutes the second end of the driving component.

[0019] Through the above scheme, the driving body and the telescopic rod are more simple in structure, facilitating disassembly and assembly. In particular, when the driving body is extracted, the telescopic rod can be extracted along a straight line together with the driving body, avoiding the problem that the telescopic rod is hindered by other components in the hollow cavity and is inconvenient to disassemble.

[0020] Optionally, the driving component is a hydraulic cylinder or a pneumatic cylinder.

[0021] Through the above scheme, the locking device can utilize the rapid response capability of the pneumatic cylinder or the hydraulic cylinder, so that the locking piece can be quickly extended and retracted, realizing rapid locking and contact locking of the locking device.

[0022] Optionally, the locking device further comprises a reset component arranged in the hollow cavity, and the reset component is located between the locking piece and the second opening.

[0023] Through the above scheme, by arranging the reset component between the locking piece and the inner wall of the locking main body adjacent to the second opening, the reset component can provide a force for the extension of the locking piece, so that when the driving body is unexpectedly powered off and the pressure inside the driving body is released, the locking piece can be extended under the action of the reset component to realize the locking function.

[0024] To achieve the above object, the wind driven generator of the embodiment is provided in another aspect of the present application, which comprises a hub and the locking device as described above.

[0025] Through the above scheme, when it is desired to lock the blade of the wind driven generator, the locking member of the locking device can be inserted into the locking hole at the root of the blade to limit the rotation of the blade, so as to protect the operation safety of the wind driven generator under certain conditions or perform other maintenance operations. Moreover, when it is necessary to replace the driving component, the fastener can be operated from the outside of the locking main body or through the channel from the outside of the locking main body, so that the fastener is separated from the second end of the driving component, then the first end of the driving component is disassembled from the outside of the locking main body, and then the first end of the driving component is gripped and the driving component is moved outward, so that the driving component is separated from the locking main body, thereby the driving component can be taken down without disassembling the locking main body, and the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Figure 1 is a semi-partial schematic view of the locking device in an embodiment provided by the present application;

[0028] Figure 2 is a semi-partial schematic view of the partial structure of the locking device in an embodiment provided by the present application;

[0029] Figure 3 is an explosion schematic view of another partial structure of the locking device in an embodiment provided by the present application;

[0030] Figure 4 is a three-dimensional schematic view of the locking member in an embodiment provided by the present application;

[0031] Figure 5 is a three-dimensional schematic view of the driving component in an embodiment provided by the present application;

[0032] Figure 6 is a schematic view of the structure of the locking device locking the blade in an embodiment provided by the present application.

[0033] EXPLANATION OF REFERENCE NUMERALS:

[0034] 100, locking main body; 110, hollow cavity; 120, first opening; 130, second opening; 140, second limiting part; 150, first shell; 160, second shell; 170, flange;

[0035] 200, locking piece; 210, channel; 211, first hole position; 212, second hole position; 213, third hole position; 220, first limiting part; 230, second limiting groove;

[0036] 300, driving component; 310, driving body; 320, telescopic rod; 321, first limiting groove;

[0037] 400, fastener; 410, locking part; 420, pressing part;

[0038] 500, reset piece;

[0039] 600, lock plate; 610, locking hole. DETAILED DESCRIPTION

[0040] A locking device can be arranged in a hub of a wind turbine, the locking device comprising a locking main body, a driving component and a locking piece, the locking main body being connected with the hub, the driving component and the locking piece being fixed on the locking main body, and the locking piece corresponding to a locking hole position of a blade root. When the wind turbine encounters a strong wind, the driving component can drive the locking piece to insert into the locking hole position to block the rotation of the blade, so as to avoid the out-of-control of the blade and protect the safety of the wind turbine. However, in the related art, the connection position of the driving component and the locking piece in the locking device is located inside the locking main body, when the driving component fails, the locking main body needs to be disassembled, and then the driving component needs to be disassembled, that is, the entire locking device needs to be disassembled to replace the driving component, which is extremely cumbersome. In addition, the staff also needs to regularly operate and maintain the locking device, that is, the connection between the locking piece and the driving component needs to be pre-tightened regularly to prevent the locking piece and the driving component from being loose or separated and affecting the normal operation of the locking device. When the connection between the locking piece and the driving component is pre-tightened, the entire locking device also needs to be disassembled, which is cumbersome and has low operation efficiency.

[0041] In order to facilitate the replacement of the driving component and the regular operation and maintenance of the connection between the driving component and the locking piece, the present application punches through the locking piece, that is, a channel communicating the external environment with the inside of the locking main body is arranged on the locking piece, one end of the driving component penetrates into the channel and is connected with the locking piece, so that the staff can disassemble and assemble the driving component and the locking piece outside the locking main body or through the channel of the locking main body. In this way, when the driving component is disassembled and the connection between the locking piece and the driving component is regularly operated and maintained, the operation steps are simplified and the operation efficiency is improved.

[0042] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application.

[0043] The present application provides a locking device for locking a part to be locked to prevent the part to be locked from moving undesirably. The locking device can be used in a wind turbine or other equipment. For example, the locking device is installed on a hub of a wind turbine and used for locking blades of the wind turbine to prevent the blades from rotating relative to the hub.

[0044] As shown in Figures 1 to 3 The locking device can include a locking body 100, a locking member 200, a driving member 300 and a fastener 400. The locking body 100 is a main part of the locking device and mainly serves to support and protect the remaining parts of the locking device. Specifically, the locking body 100 has an outer wall and a hollow cavity 110 formed by the outer wall. A first opening 120 and a second opening 130 are formed in the outer wall and communicate with the hollow cavity 110. The locking member 200 is slidably arranged in the first opening 120 and extends into a locking hole of a part to be locked to achieve locking function or is separated from the locking hole to achieve unlocking function.

[0045] The locking member 200 has a passage 210 which communicates the hollow cavity 110 with the external environment, or in other words, the passage 210 penetrates through opposite ends of the locking member 200. The first end of the driving member 300 is detachably connected to the outside of the locking body 100 and adjacent to the second opening 130, and the second end of the driving member 300 extends into the hollow cavity 110 through the second opening 130 and penetrates into the passage 210 and is detachably connected with the fastener 400, so that at least when the driving member 300 drives the second end to retract, the second end of the driving member 300 can retract together with the locking member 200 through the fastener 400. In this way, when the driving member 300 needs to be replaced, the fastener 400 can be operated outside the locking body 100 or through the passage 210 from the outside of the locking body 100 to separate the fastener 400 from the second end of the driving member 300, then the first end of the driving member 300 is detached from the outside of the locking body 100, and then the first end of the driving member 300 is grabbed and moved outward to separate the driving member 300 from the locking body 100, so that the driving member 300 can be removed without disassembling the locking body 100, which is simple and convenient. Similarly, when the connection between the driving member 300 and the locking member 200 needs to be regularly maintained, the worker only needs to pre-tighten the fastener 400 outside the locking body 100 or through the passage 210 from the outside of the locking body 100, which also does not need to disassemble the locking body 100, simplifying the maintenance operation and improving the maintenance efficiency.

[0046] For example, the second end of the driving member 300 can penetrate through the passage 210 and extend to the outside of the locking member 200, and be connected with the fastener 400 outside the locking member 200, so that the worker can operate the fastener 400 outside the locking body 100 to realize the pre-tightening maintenance and disassembly operation without disassembling the locking body 100. Of course, the second end of the driving member 300 can also penetrate into the passage 210 and not extend out of the passage 210, and correspondingly, the second end of the driving member 300 is connected with the fastener 400 in the passage 210. In this way, the worker can pre-tighten the fastener 400 in the passage 210 from the outside of the locking body 100 through the passage 210 to realize the pre-tightening maintenance and disassembly operation, which also does not need to disassemble the locking body 100. Moreover, the fastener 400 is located inside the passage 210, avoiding the problem of wear or friction falling off of the fastener 400 arranged outside during locking.

[0047] The first end of the driving component 300 is detachably connected to the outside of the locking body 100 and can block the second opening 130, so that dirt in the external environment cannot enter the hollow cavity 110 through the second opening 130 and accumulate in the hollow cavity 110, thereby affecting the normal sliding operation of the locking member 200. The outer wall surface of the locking member 200 and the inner wall surface of the hollow cavity 110 can jointly form an oil injection space for filling lubricating oil, so that the lubricating oil is used to reduce the friction between the locking member 200 and the inner wall surface of the hollow cavity 110, thereby facilitating the sliding operation of the locking member 200. Of course, a plurality of balls can also be arranged between the outer wall surface of the locking member 200 and the inner wall surface of the hollow cavity 110 to achieve lubrication through the balls.

[0048] In some embodiments, the fastener 400 has a locking portion 410 and a pressing portion 420, wherein the locking portion 410 is threadedly connected with the second end of the driving component 300, and the projection of the pressing portion 420 on the locking member 200 at least partially overlaps the locking member 200 along the sliding direction of the locking member 200 towards the second opening 130. In this way, during the driving of the second end of the driving component 300 to retract, the second end of the driving component 300 can drive the fastener 400 to retract together, and during the retraction of the fastener 400, the pressing portion 420 of the fastener 400 at least partially abuts against the locking member 200 and pushes the locking member 200, thereby driving the locking member 200 to retract and achieving the unlocking function. Moreover, the fastener 400 and the second end of the driving component 300 are threadedly connected, which is simple and convenient to disassemble and assemble, and the threadedly connected mode is less likely to directly fall off, thereby improving the connection stability of the driving component 300 and the locking member 200.

[0049] For example, the locking portion 410 is provided with a threaded hole, the second end of the driving component 300 is provided with an external thread, and the locking portion 410 is at least partially sleeved on the second end of the driving component 300 and is threadedly connected with the second end of the driving component 300. Of course, the locking portion 410 can also be provided with an external thread, and correspondingly, the second end of the driving component 300 is provided with a threaded hole, and the locking portion 410 is inserted into the threaded hole of the second end of the driving component 300 and is threadedly connected with the second end of the driving component 300.

[0050] Optionally, when the fastener 400 is locked with the second end of the driving component 300, the pressing portion 420 of the fastener 400 can abut against the locking member 200. Of course, when the fastener 400 is locked with the second end of the driving component 300, the pressing portion 420 of the fastener 400 can also be spaced apart from the locking member 200.

[0051] In some other embodiments, the fastener 400 can also be a clamping spring, and the second end of the driving component 300 is provided with a clamping groove, and the clamping spring is connected with the second end of the driving component 300 by being clamped in the clamping groove.

[0052] For example, the second end of the driving member 300 is inserted into the passage 210 without extending out of the passage 210, in order to allow the fastener 400 to be accommodated in the passage 210 and to be retracted together with the locking member 200 by the fastener 400 when the driving member 300 drives the second end to retract. In a specific embodiment, as shown in Figure 1 and Figure 2 shown, the passage 210 can have a first hole site 211, a second hole site 212 and a third hole site 213 with diameters decreasing in sequence along the sliding direction of the locking member 200 towards the second opening 130. The second end of the driving member 300 is inserted into the second hole site 212 through the third hole site 213, the locking portion 410 is threadedly connected to the second end of the driving member 300 by being inserted into the second hole site 212 through the first hole site 211, and the abutting portion 420 is located in the first hole site 211 and abuts against the step surface between the first hole site 211 and the second hole site 212.

[0053] It is considered that when the fastener 400 is pre-tightened, the rotational force applied to the fastener 400 is easily transmitted to the driving member 300, thereby causing damage to the driving member 300. Therefore, as shown in Figure 1 , Figure 4 and Figure 5 in some embodiments, a first limiting portion 220 can be provided on one of the second end of the driving member 300 and the locking member 200, and a first limiting groove 321 can be provided on the other one, the first limiting portion 220 and the first limiting groove 321 cooperate to block the rotation of the second end of the driving member 300 relative to the locking member 200. In addition, a second limiting portion 140 can be provided on one of the locking member 200 and the locking body 100, and a second limiting groove 230 can be provided on the other one, the second limiting portion 140 and the second limiting groove 230 cooperate to block the rotation of the locking member 200 relative to the locking body 100. In this way, when the fastener 400 is pre-tightened, the rotational force applied to the fastener 400 can be transmitted to the locking member 200 through the cooperation of the first limiting portion 220 and the first limiting groove 321, and then transmitted to the locking body 100 through the cooperation of the second limiting portion 140 and the second limiting groove 230, thereby avoiding the rotation of the driving member 300 caused by the rotational force and causing damage to the driving member 300.

[0054] In some embodiments, the first limiting groove 321 can be arranged on the outer wall surface of the second end of the driving component 300, and the first limiting portion 220 is arranged on one end of the channel 210 adjacent to the second opening 130, and the first limiting portion 220 extends inwardly along the radial direction of the channel 210 from the inner wall surface of the channel 210. After the second end of the driving component 300 penetrates into the channel 210, the first limiting portion 220 cooperates with the first limiting groove 321. In this way, not only the force transmitted by the fastener 400 can be transmitted to the locking component 200 to prevent the driving component 300 from being damaged, but also when the driving component 300 drives the second end to extend, the locking component 200 can also be driven to extend by the cooperation of the first limiting portion 220 and the first limiting groove 321, thereby realizing the locking function.

[0055] For example, the first limiting groove 321 can be formed by slotting the outer wall surface of the second end of the driving component 300, and the first limiting portion 220 is integrally formed with the locking component 200. It should be noted that in order to enable the second end of the driving component 300 to penetrate into the channel 210 after the first limiting portion 220 is arranged on one end of the channel 210, the second end of the driving component 300 should be provided with a first rod portion and a second rod portion having different sizes, the first rod portion is closer to the tail of the second end of the driving component 300 than the second rod portion, and the diameter of the first rod portion is smaller than that of the second rod portion, and the first limiting groove 321 is arranged on the outer wall surface of the second rod portion adjacent to one end of the first rod portion. Correspondingly, in the sliding direction of the locking component 200 towards the second opening 130, a fourth hole position having a larger caliber than the third hole position 213 can also be arranged in front of the third hole position 213, and the first limiting portion 220 is arranged on the inner wall surface of the fourth hole position. In this way, the first rod portion can penetrate into the fourth hole position and the third hole position 213 in sequence and extend into the second hole position 212, and the second rod portion penetrates into the fourth hole position and is blocked by the stepped surface between the third hole position 213 and the fourth hole position, at which time the first limiting portion 220 cooperates with the first limiting groove 321.

[0056] In some embodiments, the second limiting groove 230 can be arranged on the outer wall surface of the locking component 200, and the second limiting portion 140 is arranged on the locking body 100 and extends into the second limiting groove 230 from the outside of the locking body 100 through the side wall of the locking body 100, so that the second limiting portion 140 can be installed from the outside of the locking body 100 without the need to operate in the narrow space inside the locking body 100, thereby facilitating the installation operation.

[0057] In the embodiment, the second limiting groove 230 extends along the sliding direction of the locking member 200, so that although the second limiting part 140 extends into the second limiting groove 230 to block the rotation of the locking member 200 relative to the locking body 100, the sliding movement of the locking member 200 is not affected, so that the locking member 200 can be extended and retracted under the action of the driving member 300. For example, the second limiting part 140 can be a locking screw which is threadedly connected with the locking body 100, so that the second limiting part 140 can be prevented from being accidentally detached from the second limiting groove 230 by the threaded connection between the second limiting part 140 and the locking body 100.

[0058] In other embodiments, the second limiting part 140 can also be a sliding rail structure or a protrusion formed on the inner wall of the locking body 100, which is not limited in the present application.

[0059] In some embodiments, as shown in Figure 3 The driving member 300 can include a driving body 310 and a telescopic rod 320, the telescopic rod 320 is connected with the driving body 310, the driving body 310 is used to drive the telescopic rod 320 to extend and retract, and the axis of the telescopic rod 320 is parallel to the locking member 200. Correspondingly, the driving body 310 constitutes the first end of the driving member 300, the free end of the telescopic rod 320 constitutes the second end of the driving member 300, the first limiting groove 321 is formed in the free end of the telescopic rod 320, and the first opening 120 and the second opening 130 are located at the opposite ends of the locking body 100 along the telescopic rod 320.

[0060] For example, the driving body 310 can be detachably connected with the locking body 100 by bolts. The driving member 300 can be a pneumatic cylinder or a hydraulic cylinder, so that the quick extension and retraction function of the pneumatic cylinder or the hydraulic cylinder can be used to realize the quick locking and contact locking of the locking device. Taking the driving member 300 as a hydraulic cylinder as an example, the driving body 310 is a cylinder body, and the telescopic rod 320 is a piston rod.

[0061] In some embodiments, the locking body 100 can include a first shell 150 and a second shell 160, the first shell 150 and the second shell 160 are spliced and enclosed along the axial direction of the telescopic rod 320 to form the hollow cavity 110, that is, the splicing surface of the first shell 150 and the second shell 160 intersects with the axial direction of the telescopic rod 320. The first shell 150 and the second shell 160 jointly constitute the outer wall of the aforementioned locking body 100, the first opening 120 is arranged on the first shell 150, and the second opening 130 is arranged on the second shell 160.

[0062] Of course, the first shell 150 and the second shell 160 can also be spliced and enclosed perpendicularly to the axial direction of the telescopic rod 320 to form the hollow cavity 110, which is not limited in the present application.

[0063] In some embodiments, the outer wall of the first housing 150 or the second housing 160 is provided with a flange 170. When the locking device is applied to a wind turbine, the locking body 100 is connected to the hub of the wind turbine through the flange 170 to facilitate the installation operation of the locking device.

[0064] In some embodiments, the first housing 150 is provided with a radially inward blocking portion at the first opening 120, and the projection of the blocking portion on the locking member 200 in the sliding direction of the locking member 200 at least partially overlaps the locking member 200, so as to block the locking member 200 from completely escaping from the hollow cavity 110 through the first opening 120.

[0065] In some embodiments, referring again to Figure 1 and Figure 2 The locking device can further include a reset member 500, which is arranged in the hollow cavity 110 and located between the locking member 200 and the second opening 130. In other words, the reset member 500 is pre-pressed between the locking member 200 and the inner wall of the locking body 100 adjacent to the second opening 130, and the reset member 500 is used to provide a force for the extension of the locking member 200, so that when the drive member 300 is unexpectedly powered off, causing the internal pressure of the drive body 310 to be released, the locking member 200 can be extended to perform the locking function under the action of the reset member 500.

[0066] For example, the reset member 500 can be sleeved on the telescopic rod 320, and one end of the reset member 500 abuts against the cavity wall of the hollow cavity 110 near the second opening 130, and the other end of the reset member 500 abuts against the end of the locking member 200 near the second opening 130.

[0067] Optionally, the reset member 500 can be a spring, a rubber sleeve or other elastic component.

[0068] Based on the same inventive concept, as shown in Figure 6 The application further provides a wind turbine, which can include a hub, a blade and the aforementioned locking device. The blade is rotatably arranged on the hub to facilitate the adjustment of the pitch angle of the blade by rotation. The blade root is provided with a locking plate 600 having a locking hole 610, and the locking plate 600 is fixed relative to the blade and rotates with the blade during the rotation of the blade. The locking device is installed on the hub, and is used to lock the blade by inserting the locking member 200 into the locking hole 610, and to release the locking of the blade by controlling the locking member 200 to escape from the locking hole 610.

[0069] The specific structure of the locking device can refer to the detailed description in the above embodiments, and the specific structure of the hub and the blade can refer to the prior art, which will not be described here.

[0070] The terms "upper", "lower", and the like are used to describe the relative position relationship of various structures in the drawings, and are only for the convenience of clear description, and do not limit the scope of the application. The change or adjustment of the relative relationship is also considered as the scope of the application without substantial change of the technical content.

[0071] It should be noted that in the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact or indirectly contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0072] In addition, in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A locking device, characterized in that The locking device comprises: a locking body having a hollow cavity and a first opening and a second opening communicating with the hollow cavity; a locking member slidingly arranged in the first opening, the locking member having a passage communicating the hollow cavity with the external environment; a driving member, a first end of the driving member being detachably connected to the outside of the locking body adjacent to the second opening, a second end of the driving member penetrating the second opening and the passage; a fastener detachably connected with the second end of the driving member.

2. The locking device of claim 1, wherein, The fastener has a locking portion and a pressing portion, wherein, the locking portion is threadedly connected with the second end of the driving member, and along the sliding direction of the locking member towards the second opening, a projection of the pressing portion on the locking member at least partially overlaps the locking member, so that during the driving of the fastener to retract by the driving member, the pressing portion abuts against the locking member and pushes the locking member to retract.

3. The locking device of claim 2, wherein, One of the second end of the driving member and the locking member is provided with a first limiting portion, and the other one is provided with a first limiting groove, the first limiting portion and the first limiting groove cooperate to block the rotation of the second end of the driving member relative to the locking member; One of the locking member and the locking body is provided with a second limiting portion, and the other one is provided with a second limiting groove, the second limiting portion and the second limiting groove cooperate to block the rotation of the locking member relative to the locking body.

4. The locking device of claim 3, wherein The first limiting groove is arranged on the outer wall surface of the second end of the driving member; The first limiting portion is arranged at one end of the passage adjacent to the second opening, and the first limiting portion extends inwardly along the radial direction of the passage from the inner wall surface of the passage, and after the second end of the driving member penetrates the passage, the first limiting portion cooperates with the first limiting groove.

5. A locking device according to claim 3 or 4, characterised in that, The second limiting groove is arranged on the outer wall surface of the locking member; The second limiting portion is arranged on the locking body, and the second limiting portion penetrates the second limiting groove from the outside of the locking body through the side wall of the locking body.

6. The locking device of claim 2, wherein, Along the sliding direction of the locking member towards the second opening, the passage has a first hole, a second hole and a third hole with diameters decreasing in sequence; The second end of the driving member penetrates into the second hole through the third hole, the locking portion penetrates into the second hole through the first hole and is threadedly connected with the second end of the driving member, and the pressing portion is located in the first hole and abuts against the step surface between the first hole and the second hole.

7. The locking device of claim 1, wherein The driving member comprises a driving body and a telescopic rod connected with the driving body, the driving body constitutes the first end of the driving member, and the free end of the telescopic rod constitutes the second end of the driving member.

8. The locking device of claim 7, wherein, The driving member is a hydraulic cylinder or a pneumatic cylinder.

9. The locking device of claim 1, wherein, The locking device further comprises a reset member arranged in the hollow cavity, and the reset member is located between the locking member and the second opening.

10. A wind power generator, characterized by The wind turbine comprises a hub and the locking device according to any one of claims 1 to 9, and the locking device is mounted on the hub.

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