Fan and its turning gear device

Abstract

The utility model relates to a fan field discloses a fan and its turning gear, and turning gear includes drive transmission mechanism, slewing mechanism, slewing mechanism includes fastener, coaxial setting slewing member and mounting piece, slewing member is connected with the output end power of drive transmission mechanism, and mounting piece rotatably installs on slewing member, is fixed on the rotor of the generator of fan, and fastener is used for detachably fixing mounting piece on slewing member, and drive transmission mechanism is used for driving slewing mechanism to rotate around the axial rotation of slewing member to drive the rotor rotation of generator, realizes turning gear. After completing the turning gear operation of one blade, unloads the fixed connection between mounting piece and slewing member, and when operating the next blade, mounting piece and slewing member are fixed together through fastener and carry out the turning gear operation, realize the turning gear operation of multiple blades through a drive transmission mechanism and a slewing mechanism, so that turning gear device structure is simple and compact.

Description

Technical Field

[0001] This utility model relates to the field of wind turbines, and in particular to a turning gear device for wind turbines. Background Technology

[0002] Wind turbine generators, or simply wind turbines, typically use high-power turning gears for turning. These gears employ a structure with multiple drives (motors + reducers) and parallel shaft gearboxes. The multi-drive configuration is structurally and controllably complex and prone to failure. When using multi-drive turning gears on high-power wind turbines, the overall size of the turning gear is very large, occupying significant space within the wind turbine nacelle and hindering the design of maintenance access, construction space, hoisting, and storage within the nacelle. Utility Model Content

[0003] In order to overcome the shortcomings of the complex and non-compact structure of the existing fan turning device, this utility model provides a fan and its turning device.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A turning gear device for a wind turbine, the turning gear device comprising:

[0006] Drive transmission mechanism;

[0007] A rotary mechanism includes fasteners, a coaxially arranged rotary component and a mounting component. The rotary component is poweredly connected to the output end of the drive transmission mechanism. The mounting component is rotatably mounted on the rotary component and is used to fix it to the rotor of the generator of the wind turbine. The fasteners are used to detachably fix the mounting component to the rotary component.

[0008] The drive transmission mechanism is used to drive the rotary mechanism to rotate around the axial direction of the rotary component, so as to drive the rotor of the generator to rotate.

[0009] In this design, when the fasteners secure the mounting component to the rotating component, the drive transmission mechanism drives the generator rotor to rotate via the rotating mechanism, achieving the turning operation. After the fastener-secured connection between the mounting component and the rotating component is removed, the mounting component can rotate along with the generator rotor without affecting the drive transmission mechanism.

[0010] When multiple blades of a wind turbine are connected to the rotor of the same generator, during blade installation or maintenance, the fixed connection between the mounting and rotating components can be removed after completing the turning operation for one blade. When operating the next blade, the mounting and rotating components are then secured together with fasteners for the turning operation. Achieving turning operations for multiple blades through a single drive mechanism results in a simple turning device structure, easy control, reduced failure risk, and high operational reliability. Furthermore, its compact structure and small footprint facilitate the installation and operation of other components within the wind turbine.

[0011] Preferably, the mounting component is rotatably mounted on the rotating component via a bearing, wherein one of the bearing's inner ring and outer ring is fixed to the mounting component, and the other is fixed to the rotating component.

[0012] Preferably, both the rotating component and the mounting component are provided with fastening holes that extend through the axial direction of the rotating component, and the fasteners are detachably fixed in the fastening holes of the rotating component and the mounting component.

[0013] Preferably, the turning device further includes a position detector for detecting the position of the fastener relative to the fastening hole and for issuing a position signal for controlling the start of the drive transmission mechanism.

[0014] Preferably, the turning device further includes a torque arm, which includes a fixed part, a folding part, and a mounting part;

[0015] The fixed part is fixed to the drive transmission mechanism; or the turning device further includes a base, the rotating part is rotatably mounted on the base, and the fixed part is fixed to the base;

[0016] The folding portion is rotatably mounted on the fixed portion and can rotate about a direction perpendicular to the axial direction of the rotating member. The mounting portion is located at one end of the folding portion that is radially away from the fixed portion along the rotating member and is used to fix it to the stator of the wind turbine's generator.

[0017] In this design, the torque arm is folded to reduce the size of the turning gear, making it easier to lift and leaving ample space for other operations on the wind turbine.

[0018] Preferably, the turning device further includes a floating support mechanism, wherein the slewing mechanism and the floating support mechanism are respectively disposed at both ends of the drive transmission mechanism along the axial direction of the slewing member, and the floating support mechanism is used to be installed on the frame of the fan.

[0019] Preferably, the floating support mechanism includes a support rod, a limiting member, an elastic member, and a support base. One end of the support rod is disposed at the bottom of the drive transmission mechanism, and the other end extends downward to the support base and is movably mounted on the support base along the radial direction of the rotating member. The limiting member is disposed on the outer periphery of the support rod and located above the support base. The elastic member is compressed between the limiting member and the support base. The drive transmission mechanism is used to be mounted on the frame of the fan, and the support base is used to be fixed on the frame of the fan.

[0020] Preferably, the support rod and the bottom of the drive transmission mechanism are connected by a ball joint.

[0021] In this design, the precision requirements for installation and fitting are reduced. Even if the drive transmission mechanism is tilted relative to the support rod during rotation, the support rod and the drive transmission mechanism can always maintain good contact and support, thus improving the reliability of the support.

[0022] Preferably, the support base includes a support base body and an adjusting shim, the support rod passes through the support base body in the radial direction of the rotating member, the elastic member is compressed between the limiting member and the support base body, and the adjusting shim is disposed at the bottom of the support base for adjusting the height position of the support base body.

[0023] In this solution, the height of the support body can be adjusted by adjusting the shims. On the one hand, this can adjust the manufacturing and installation errors of the product, and on the other hand, it can adjust the pre-compression degree of the elastic element.

[0024] Preferably, the limiting member and the support rod are engaged by threads.

[0025] In this design, the threaded engagement has a self-locking function and reliable positioning; on the other hand, the pre-compression degree of the elastic element can be adjusted by rotating the limiting element.

[0026] Preferably, the drive transmission mechanism includes a motor and a reducer, the output end of the motor and the input end of the reducer are poweredly connected, and the output end of the reducer serves as the output end of the drive transmission mechanism and is poweredly connected to the rotating component.

[0027] Preferably, the motor includes a first brake, and a second brake is provided between the motor and the transmission chain of the reducer.

[0028] Preferably, the output end of the reducer is an output shaft, and the rotating component is fixed to the outer circumference of the output shaft, with the output shaft serving as the pivot.

[0029] A wind turbine includes a generator and a turning device for the wind turbine as described in any of the above technical solutions, wherein the mounting component is fixed to the rotor of the generator.

[0030] Preferably, the wind turbine includes a plurality of blades, the plurality of blades being poweredly connected to the rotor of a generator, and the stator of the generator being fixedly connected to the mounting component of a turning gear.

[0031] Preferably, the generator, the mounting component, the rotating component, and the drive transmission mechanism are arranged sequentially along the axial direction of the rotating component.

[0032] The positive and progressive effects of this utility model are as follows:

[0033] When the fasteners secure the mounting component to the rotating component, the drive transmission mechanism drives the generator rotor to rotate via the rotating mechanism, thus achieving the turning operation. After the fastener-secured connection between the mounting component and the rotating component is removed, the mounting component can rotate with the generator rotor without affecting the drive transmission mechanism.

[0034] When multiple blades of a wind turbine are connected to the rotor of the same generator, during blade installation or maintenance, the fixed connection between the mounting and rotating components can be removed after completing the turning operation for one blade. When operating the next blade, the mounting and rotating components are then secured together with fasteners for the turning operation. By using a single drive—one drive transmission mechanism and one rotating mechanism—to achieve turning operations for multiple blades, the turning device has a simple structure, is easy to control, reduces the risk of failure, and has high operational reliability. Furthermore, its compact structure and small footprint facilitate the installation and operation of other components within the wind turbine. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the installation of the turning tool on the fan according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the torque arm deployed in a turning tool according to an embodiment of the present invention.

[0037] Figure 3 This is a schematic diagram of the torque arm being folded in a turning tool according to an embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of the structure of the rotary mechanism in one embodiment of the present invention;

[0039] Figure 5 This is a structural schematic diagram of the floating support mechanism in one embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] Turning gear device 1000;

[0042] Drive transmission mechanism 1, motor 11, second brake 12, reducer 13, output shaft 131;

[0043] Rotary mechanism 2, rotating component 21, mounting component 22, fastening hole 23, bearing 24, bearing inner ring 241, bearing outer ring 242, fastener 25;

[0044] Position detector 26;

[0045] Torque arm 3, fixed part 31, folding part 32, mounting part 33;

[0046] Floating support mechanism 4, support rod 41, limiting component 42, elastic component 43, support seat 44, support seat body 441, adjusting shim 442;

[0047] Generator 2000;

[0048] Frame 3000, crossbeam 3001. Detailed Implementation

[0049] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0050] This embodiment provides a fan. Figures 1-5 This is a schematic diagram of this embodiment. The wind turbine includes a generator, multiple blades, and a turning gear. The multiple blades and the generator are poweredly connected, as shown below. Figure 1 The turning device 1000 is used to connect with the rotor drive of the generator 2000 for turning operations.

[0051] like Figure 2 , Figure 3 The turning gear 1000 includes:

[0052] Drive transmission mechanism 1 is used to provide power for turning gear operation;

[0053] Rotary mechanism 2, such as Figure 4 The rotating mechanism 2 includes a fastener 25, a rotating component 21, and a mounting component 22, with the rotating component 21 and the mounting component 22 arranged coaxially. Figure 4 The dotted line L indicates the rotation axis of the rotating component 21, and the extension direction of L is the axial direction of the rotating component 21. The dashed line R indicates the radial direction of the rotating component 21. The rotating component 21 is poweredly connected to the output end of the drive transmission mechanism 1. The mounting component 22 is rotatably mounted on the rotating component 21 and fixed on the rotor of the generator 2000 of the wind turbine. The fastener 25 is used to detachably fix the mounting component 22 to the rotating component 21.

[0054] The drive transmission mechanism 1 is used to drive the rotary mechanism 2 to rotate around the L direction, so as to drive the rotor of the generator 2000 to rotate.

[0055] When the fastener 25 secures the mounting part 22 to the rotating part 21, the drive transmission mechanism 1 drives the rotor of the generator 2000 to rotate via the rotating mechanism 2 to achieve a turning operation. When the fixed connection between the mounting part 22 and the rotating part 21 formed by the fastener 25 is removed, the blades or wind turbine rotate freely, and the mounting part 22 can rotate with the rotor of the generator 2000 without affecting the rotating part 21 and the drive transmission mechanism 1, thus avoiding high-speed overload of the drive transmission mechanism 1.

[0056] When installing or maintaining the blades, the fixed connection between the mounting component 22 and the rotating component 21 can be removed after completing the turning operation for one blade. When operating the next blade, the mounting component 22 and the rotating component 21 can be fixed together again using fasteners 25 for the turning operation. Multiple turning operations for different blades are achieved through a single drive, namely one drive transmission mechanism 1 and one rotating mechanism 2. The rotor of the direct drive generator 2000 rotates the wind turbine to the designated installation or maintenance position, making the turning device 1000 simple in structure, easy to control, reducing the risk of failure, and ensuring high operational reliability. Furthermore, its compact structure and small footprint facilitate the installation and operation of other wind turbine structures.

[0057] like Figure 2 , Figure 3 The drive transmission mechanism includes a motor 11 and a reducer 13. The output end of the motor 11 and the input end of the reducer 13 are connected by a power connection, such as... Figure 4 The output end of the reducer 13 is the output shaft 131, which serves as the shaft of the rotating component 21 and is fixedly connected to it. This allows the power of the motor 11 to be transmitted sequentially to the rotor of the generator 2000 via the output shaft 131 of the reducer 13, the rotating component 21, and the mounting component 22, thereby driving the turning operation via the motor 11. Figure 4 The axis of the output shaft 131 is L.

[0058] In this embodiment, the motor 11 includes a first brake, which may be, but is not limited to, an electromagnetic brake. A second brake 12 is provided between the transmission chain of the motor 11 and the reducer 13. The two brakes provide double braking, serving as a double safety measure to ensure the reliable and safe braking of the turning gear 1000 and to prevent damage to the fan equipment due to brake failure. Regarding how to install the brake inside the motor 11 and how to install the brake on the transmission chain between the motor 11 and the reducer 13, existing technologies can be referenced, and will not be elaborated here.

[0059] like Figure 4The mounting component 22 is rotatably mounted on the rotating component 21 via the bearing 24. The inner ring 241 of the bearing 24 is fixed on the rotating component 21, and the outer ring 242 of the bearing 24 is fixed on the mounting component 22, thereby realizing the rotatable connection between the mounting component 22 and the rotating component 21.

[0060] like Figure 4 Both the rotating component 21 and the mounting component 22 are provided with fastening holes 23 extending along the L direction. Fasteners 25 are detachably fixed within the fastening holes 23 of the rotating component 21 and the mounting component 22, achieving a detachable fixed connection between them. In this embodiment, the fastener 25 is a pin. Inserting the fastener 25 secures the mounting component 22 and the rotating component 21, while removing the fastener 25 detaches the mounting component 22 from the rotating component 21. The mounting component 22 can rotate with the rotor of the generator 2000 without affecting the rotating component 21 and the drive transmission mechanism. In other embodiments, the fastener 25 may be, but is not limited to, pins, screws, studs, and nuts.

[0061] like Figure 4 The turning gear device 1000 also includes a position detector 26, which is used to detect the position of the fastener 25 relative to the fastening hole 23 and to send a position signal. The position signal is used to control the start of the drive transmission mechanism 1. In this embodiment, the position signal is used to determine whether the fastener 25 is fully inserted into the fastening hole 23 of the mounting part 22 and the rotating part 21 along the L direction. Only after the fastener 25 is fully inserted into the fastening hole 23 of the mounting part 22 and the rotating part 21, and the fixed connection between the mounting part 22 and the rotating part 21 is complete, can the position signal sent by the position detector 26 control the start of the drive transmission mechanism 1. This avoids the situation where the drive transmission mechanism 1 is started when the fixed connection between the mounting part 22 and the rotating part 21 is not complete, or the turning gear tooling is damaged due to human error, thereby improving the reliability of the turning gear tooling operation. The position detector 26 may be, but is not limited to, a position detection sensor such as a proximity switch sensor, an infrared sensor, or a Hall sensor; it may be, but is not limited to, being touched or blocked by the fastener 25 after it is installed in place to send a position signal, or having a magnetic material on the fastener 25 and using a Hall element to sense the position of the fastener 25 to send a position signal.

[0062] like Figure 2 , Figure 3The turning device 1000 also includes a torque arm 3, which includes a fixed part 31, a folding part 32, and a mounting part 33. The fixed part 31 is fixed to the housing of the reducer 13. The folding part 32 is rotatably mounted on the fixed part 31 at one end along the radial direction of the rotating part 21 and can rotate about a direction perpendicular to the axial direction of the rotating part 21. The other end is provided with the mounting part 33. The mounting part 33 is specifically fixedly connected to the folding part 32 by a pin. The mounting part 33 is fixed to the housing of the fan so as to be fixed relative to the stator of the generator 2000 of the fan. Figure 2 This is a schematic diagram of the folded portion 32 of the torque arm 3 when unfolded. Figure 3 This is a schematic diagram showing the folded portion 32 folded up. During transportation, installation, or removal of the turning gear fixture, the torque arm 3 is folded to reduce the size of the fixture, facilitating transportation, handling, or hoisting. When the fan is operating normally and the turning gear fixture is not in use, the folded portion 32 of the torque arm 3 can be rotated to fold up, reducing the space occupied by the turning gear fixture on the fan, thus leaving ample space inside the fan for other operations. In other embodiments, a base can be provided in the turning gear device 1000, the rotating component 21 can be rotatably mounted on the base, and the fixed portion 31 of the torque arm 3 can be fixed to the base.

[0063] like Figure 1 The generator 2000, mounting component 22, rotating component 21, and drive transmission mechanism are arranged sequentially along the axial direction of the rotating component 21. The turning gear device 1000 is installed at the tail end of the generator 2000 rotor, which makes the overall axial dimension of the generator 2000 and the turning gear device 1000 long and the center of gravity shifted to the rear, making it easy to generate additional downward force on the generator 2000.

[0064] like Figure 2 , Figure 3 The turning device 1000 also includes a floating support mechanism 4. Along the L direction, one end of the drive transmission mechanism 1 is equipped with a rotary mechanism 2, and the other end is equipped with a floating support mechanism 4. Figure 5 The floating support mechanism 4 includes a support rod 41, a limiting member 42, an elastic member 43, and a support base 44; for example... Figure 1 The wind turbine also includes a frame 3000, a generator 2000, and a drive transmission mechanism 1 mounted on the frame 3000, with a support base 44 fixed to the frame 3000; for example Figure 5 One end of the support rod 41 is located at the bottom of the drive transmission mechanism 1, and the other end extends downward to the support base 44, forming an upward supporting force on the drive transmission mechanism to prevent the generator 2000 from falling and damaging it. Figure 1The frame includes a crossbeam 3001, and a floating support mechanism 4 is mounted on the crossbeam 3001 via a support base 44, specifically located on the side of the crossbeam away from the generator 2000. In other embodiments, if the wind turbine model is different, causing the length of the drive chain formed between the wind turbine blades and the generator to be shorter than in this embodiment, the tail end of the turning gear 1000 will move relative to the side facing the generator 2000 in this embodiment. A floating support mechanism 4' can be provided on the side of the crossbeam 3001 facing the generator, so that the floating support of the turning gear 1000 is adapted to the length of the drive chain and the position of the tail end of the turning gear 1000.

[0065] like Figure 5 The support rod 41 is movably mounted on the support seat 44 along the radial direction of the rotating component 21; the limiting component 42 is disposed on the outer periphery of the support rod 41 and located above the support seat 44, and the elastic component 43 is compressed between the limiting component 42 and the support seat 44. When the turning gear is running, when the drive transmission mechanism 1 drives the rotating mechanism 2 and the rotor of the generator 2000 to rotate, the rotating mechanism 2, the reducer 13, etc. of the turning gear 1000 tilt under the action of rotational force. When the turning gear 1000 tilts, the elastic component 43 resets to drive the support rod 41 to move upward relative to the support seat 44, compensating for the tilting distance of the turning gear 1000, so that the support rod 41 always forms a floating support on the bottom of the drive transmission mechanism 1, effectively supporting the torque generated by the rotation of the generator 2000 and the components in the turning gear 1000, and protecting the generator 2000 and the turning gear 1000.

[0066] like Figure 5 The support rod 41 and the bottom of the drive transmission mechanism are connected by a ball joint, which can reduce the precision requirements of the installation and fit. Even if the drive transmission mechanism 1 is tilted relative to the support rod 41 when it is turning, the support rod 41 and the drive transmission mechanism can always maintain good contact support, thus improving the reliability of the support.

[0067] like Figure 5 The support base 44 includes a support base body 441 and an adjusting shim 442. The support rod 41 passes through the support base body 441 along the radial direction of the rotating part. The elastic element 43 is compressed between the limiting element 42 and the support base body 441. The adjusting shim 442 is set at the bottom of the support base 44 and is used to adjust the height position of the support base body 441. On the one hand, it can adjust the product manufacturing and installation error, and on the other hand, it can adjust the pre-compression degree of the elastic element 43.

[0068] In this embodiment, the limiting member 42 is a nut and the support rod 41 is a screw. The two threads mesh together, and the upper end of the elastic member 43 is limited by the nut. On the one hand, the nut and the screw have a self-locking function, and the limiting is reliable. On the other hand, the pre-compression degree of the elastic member 43 can be adjusted by rotating the nut.

[0069] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A turning gear device for a fan, characterized in that, The turning gear includes: Drive transmission mechanism; A rotary mechanism includes fasteners, a coaxially arranged rotary component and a mounting component. The rotary component is poweredly connected to the output end of the drive transmission mechanism. The mounting component is rotatably mounted on the rotary component and is used to fix it to the rotor of the generator of the wind turbine. The fasteners are used to detachably fix the mounting component to the rotary component. The drive transmission mechanism is used to drive the rotary mechanism to rotate around the axial direction of the rotary component, so as to drive the rotor of the generator to rotate.

2. The turning gear device for a wind turbine as described in claim 1, characterized in that, The mounting component is rotatably mounted on the rotating component via a bearing, wherein one of the bearing's inner ring and outer ring is fixed to the mounting component, and the other is fixed to the rotating component.

3. The turning gear device for a wind turbine as described in claim 1, characterized in that, Both the rotating component and the mounting component are provided with fastening holes that extend through the axial direction of the rotating component, and the fasteners are detachably fixed in the fastening holes of the rotating component and the mounting component.

4. The turning gear device for a wind turbine as described in claim 3, characterized in that, The turning device further includes a position detector, which is used to detect the position of the fastener relative to the fastening hole and to send a position signal, which is used to control the start of the drive transmission mechanism.

5. The turning gear device for a wind turbine as described in claim 1, characterized in that, The turning device also includes a torque arm, which includes a fixed part, a folding part, and an installation part; The fixed part is fixed to the drive transmission mechanism; or the turning device further includes a base, the rotating part is rotatably mounted on the base, and the fixed part is fixed to the base; The folding portion is rotatably mounted on the fixed portion and can rotate about a direction perpendicular to the axial direction of the rotating member. The mounting portion is located at one end of the folding portion that is radially away from the fixed portion along the rotating member and is used to fix it to the stator of the wind turbine's generator.

6. The turning gear device for a wind turbine as described in claim 1, characterized in that, The turning device further includes a floating support mechanism. The slewing mechanism and the floating support mechanism are respectively disposed at both ends of the drive transmission mechanism along the axial direction of the slewing member. The floating support mechanism includes a support rod, a limiting member, an elastic member, and a support seat. One end of the support rod is disposed at the bottom of the drive transmission mechanism, and the other end extends downward to the support seat and is movably mounted on the support seat along the radial direction of the slewing member. The limiting member is disposed on the outer periphery of the support rod and located above the support seat. The elastic member is compressed between the limiting member and the support seat. The drive transmission mechanism is used to be mounted on the frame of the fan, and the support seat is used to be fixed on the frame of the fan.

7. The turning gear device for a wind turbine as described in claim 6, characterized in that, The support rod and the bottom of the drive transmission mechanism are connected by a ball joint; And / or, the support base includes a support base body and an adjusting shim, the support rod passes through the support base body radially along the rotating member, the elastic member is compressed between the limiting member and the support base body, and the adjusting shim is disposed at the bottom of the support base for adjusting the height position of the support base body; And / or, the limiting member and the support rod are engaged by threads.

8. The turning gear device for a wind turbine as described in claim 1, characterized in that, The drive transmission mechanism includes a motor and a reducer. The output end of the motor and the input end of the reducer are poweredly connected. The output end of the reducer serves as the output end of the drive transmission mechanism and is poweredly connected to the rotating component.

9. The turning gear device for a wind turbine as described in claim 8, characterized in that, The motor includes a first brake, and a second brake is provided between the motor and the transmission chain of the reducer; And / or, the output end of the reducer is an output shaft, and the rotating component is fixed to the outer circumference of the output shaft, with the output shaft serving as the pivot.

10. A wind turbine comprising a generator, characterized in that, The wind turbine further includes a turning device for the wind turbine as described in any one of claims 1-9, wherein the mounting component is fixed to the rotor of the generator.

11. The fan as described in claim 10, characterized in that, The wind turbine includes multiple blades, which are poweredly connected to the rotor of a generator, and the stator of the generator is fixedly connected to the mounting component of the turning gear. And / or, the generator, the mounting component, the rotating component, and the drive transmission mechanism are arranged sequentially along the axial direction of the rotating component.

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