Damping mechanism of wind driven generator

Abstract

The utility model discloses a damping mechanism of a wind driven generator, and relates to the technical field of wind driven generators. The generator comprises a cabin, a cabin cover plate is mounted at the top of the cabin through bolts, a partition plate is fixedly connected to the inner wall of the cabin, a generator body is positioned and placed at the top of the partition plate, and the generator further comprises a damping mechanism mounted on the outer side of the generator body. The damping mechanism is used for dispersing vibration generated when the generator body works. According to the utility model, the damping mechanism is arranged, specifically, after the generator main body is installed, the connecting plate is connected with the H-shaped butt-joint plate in an inserted manner, then the fixing bolts are inserted into the H-shaped butt-joint plate and the connecting plate, and are locked and fixed by the nuts, so that vibration can be dispersed to the connecting plate and the H-shaped butt-joint plate and transmitted to a cabin when the generator main body generates vibration during working; most of vibration is effectively reduced, the stability of the generator main body during operation is improved, and the situation that the bolt is loosened is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine technology, and in particular relates to a vibration damping mechanism for a wind turbine. Background Technology

[0002] Wind turbines are subject to various dynamic loads during operation. They are not only affected by the vibrations generated during their own operation, but also by the uneven wind force acting on the blades when the rotor rotates, resulting in periodic vibrations.

[0003] Traditional wind turbines are typically bolted to the nacelle. As the generator vibrates during operation, the bolts can loosen over time, causing the generator to vibrate more and potentially damaging it. This necessitates frequent tightening of the bolts, making maintenance cumbersome. Therefore, we propose a vibration damping mechanism for wind turbines. Utility Model Content

[0004] The purpose of this utility model is to provide a vibration damping mechanism for a wind turbine. Specifically, after the generator body is installed, the connecting plate is inserted into the H-shaped mating plate, and then fixing bolts are inserted into the H-shaped mating plate and the connecting plate, and finally tightened with nuts. This method can disperse the vibration generated by the generator body during operation onto the connecting plate and the H-shaped mating plate, and transmit it to the nacelle, thereby effectively reducing most of the vibration, improving the stability of the generator body during operation, and reducing the possibility of bolt loosening. This solves the problem that existing generators vibrate during operation, and after prolonged operation, the fixing bolts easily loosen, resulting in greater generator vibration amplitude, and in severe cases, damage to the wind turbine.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a vibration damping mechanism for a wind turbine generator, comprising a nacelle, a nacelle cover plate bolted to the top of the nacelle, a partition plate fixedly connected to the inner wall of the nacelle, and a generator body positioned on top of the partition plate, and further comprising:

[0007] A vibration damping mechanism is installed on the outside of the generator body and is used to disperse the vibration generated when the generator body is working.

[0008] A reinforcement component is installed at the bottom of the generator body and is used to reinforce the generator body.

[0009] The nacelle cover is detachable and can be opened to install the generator body inside the nacelle or to remove the generator body from the nacelle.

[0010] Furthermore, the shock absorption mechanism includes a positioning component, which is installed on the side of the generator body and is used for positioning the generator body during installation.

[0011] It also includes several connecting plates fixedly connected to the outside of the generator body, with H-shaped docking plates inserted into the outside of the connecting plates and fixing bolts inserted into the inside of the H-shaped docking plates;

[0012] The H-shaped docking plate is fixedly connected to the interior of the cabin on the side away from the connecting plate. The fixing bolts pass through the H-shaped docking plate and the connecting plate respectively, and the locking nuts are installed on the fixing bolts to lock and fix the connecting plate and the H-shaped docking plate.

[0013] Furthermore, the positioning assembly includes several fixing plates fixedly connected to the bottom outer side of the generator body. A positioning seat is inserted into the outer side of the fixing plate, and the bottom of the positioning seat is fixedly connected to the top of the partition plate. After the generator body is inserted into the fixing plate and the positioning seat, it can play a positioning role, making it more convenient to install bolts on the generator body later.

[0014] The fixing plate and the positioning seat are connected to position the generator body during installation and to prevent the generator body from moving after installation. At the same time, the fixing plate and the positioning seat are connected to align the mounting holes.

[0015] Furthermore, several I-beam steel frames are fixedly connected to the bottom of the partition, and the bottom of the I-beam steel frames is fixedly connected to the bottom of the inner wall of the engine room. An opening is provided inside the partition, and a base plate is fixedly connected to the bottom of the generator body. The base plate is fixed to the bottom of the generator body by welding.

[0016] The base plate is inserted into the opening at the bottom of the cabin, and the I-beam steel frame is used to provide stable support and disperse vibration force.

[0017] Furthermore, the reinforcement component includes a fixing block fixedly connected to the bottom of the base plate, a rotating rod rotatably connected inside the fixing block, threaded holes on both the left and right sides of the rotating rod, the threads in the two threaded holes being arranged in opposite directions, and an external hexagonal block fixedly connected to the outer surface of the rotating rod; the external hexagonal block is located on the left side of the fixing block and is fixed to the rotating rod by welding.

[0018] The rotating rod has a protrusion at its center to limit its movement, and the external hexagonal block allows workers to rotate the rod using tools such as wrenches.

[0019] Furthermore, each of the two threaded holes inside the rotating rod is threaded with a threaded rod, the threads on the two threaded rods are arranged in opposite directions, and a clamping block is fixedly connected to the side of the two threaded rods that are far apart from each other;

[0020] The clamping block has protruding teeth on the side facing the inner wall of the opening to increase friction. When the rotating rod rotates, it will drive the two threaded rods to move closer or further apart. At this time, the two clamping blocks will move horizontally with the two threaded rods respectively.

[0021] Furthermore, the bottom of the base plate is provided with several sliding grooves, and the top of the clamping block is fixedly connected with two limiting blocks that are adapted to the shape of the sliding grooves. The limiting blocks slide in the sliding grooves and are used to limit the clamping block so that the clamping block moves in a straight line.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model incorporates a shock-absorbing mechanism. Specifically, after the generator body is installed, the connecting plate is inserted into the H-shaped docking plate, and then the fixing bolts are inserted into the H-shaped docking plate and the connecting plate, and locked with nuts. This method can disperse the vibration generated by the generator body during operation to the connecting plate and the H-shaped docking plate, and transmit it to the nacelle, thereby effectively reducing most of the vibration, improving the stability of the generator body during operation, and reducing the occurrence of loose bolts.

[0024] 2. This utility model incorporates a reinforcement component. Specifically, after the generator body is installed, the base plate is inserted into the opening. The operator uses a wrench to turn the outer hexagonal block clockwise, causing the rotating rod to rotate as well. At this time, the two threaded rods will cause the two clamping blocks to move away from each other. When the protruding teeth on the surface of the clamping blocks come into contact with the inner wall of the opening, they will press and fix the generator body, thereby reinforcing the generator body, making the generator body more stable, and further reducing the vibration of the generator body.

[0025] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2This is a schematic diagram of the internal structure of the cabin of this utility model;

[0029] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0030] Figure 4 This is a schematic diagram of the overall structure of the partition of this utility model;

[0031] Figure 5 This is a schematic diagram of the bottom structure of the partition of this utility model;

[0032] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the fixing block of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Engine compartment; 11. Engine compartment cover; 12. Bulkhead; 121. I-beam frame; 122. Opening; 123. Base plate; 124. Slide rail; 13. Generator body; 2. Shock absorption mechanism; 21. Positioning assembly; 211. Fixing plate; 212. Positioning seat; 22. Connecting plate; 23. H-shaped mating plate; 24. Fixing bolt; 3. Reinforcing assembly; 31. Fixing block; 32. Rotating rod; 33. External hexagonal block; 34. Threaded rod; 35. Clamping block; 36. Limiting block. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-6As shown, this utility model is a vibration damping mechanism for a wind turbine generator, including a nacelle 1. A nacelle cover 11 is bolted to the top of the nacelle 1, and a partition 12 is fixedly connected to the inner wall of the nacelle 1. A generator body 13 is positioned on the top of the partition 12. The model also includes: a vibration damping mechanism 2, installed on the outside of the generator body 13, used to disperse the vibration generated by the generator body 13 during operation; and a reinforcement component 3, installed at the bottom of the generator body 13, used to reinforce the generator body 13. The nacelle cover 11 is detachable, facilitating the installation of the generator body 13 into the nacelle 1 by hoisting and simplifying subsequent maintenance. The vibration damping mechanism 2 includes a positioning component. 21. The positioning component 21 is installed on the side of the generator body 13 and is used to position the generator body 13 during installation. It also includes several connecting plates 22 fixedly connected to the outside of the generator body 13. H-shaped mating plates 23 are inserted into the outside of the connecting plates 22, and fixing bolts 24 are inserted into the inside of the H-shaped mating plates 23. After the generator body 13 is installed, the connecting plates 22 are inserted into the H-shaped mating plates 23, and then the fixing bolts 24 are inserted into the H-shaped mating plates 23 and the connecting plates 22, and locked with nuts. This method can disperse the vibration generated by the generator body 13 during operation onto the connecting plates 22 and H-shaped mating plates 23, and transmit it to the nacelle 1, thereby effectively reducing most of the vibration and improving power generation. The generator body 13 is stable during operation and the occurrence of loose bolts is reduced. The H-shaped docking plate 23 is fixedly connected to the interior of the engine compartment 1 on the side away from the connecting plate 22. Fixing bolts 24 pass through the H-shaped docking plate 23 and the connecting plate 22, respectively, and locking nuts are installed on the fixing bolts 24 to lock and fix the connecting plate 22 and the H-shaped docking plate 23. The positioning assembly 21 includes several fixing plates 211 fixedly connected to the bottom outer side of the generator body 13. Positioning seats 212 are inserted into the outer side of the fixing plates 211, and the bottom of the positioning seats 212 is fixedly connected to the top of the partition plate 12. After the generator body 13 is inserted into the fixing plates 211 and the positioning seats 212, it can play a positioning role, making it easier to install bolts on the generator body 13 later. The fixing plate 211 and the positioning seat 212 are inserted to position the generator body 13 during installation and to prevent the generator body 13 from moving after installation. The fixing plate 211 and the positioning seat 212 are also inserted to align the mounting holes. Several I-beam steel frames 121 are fixedly connected to the bottom of the partition plate 12. The bottom of the I-beam steel frames 121 is fixedly connected to the bottom of the inner wall of the nacelle 1. An opening 122 is provided inside the partition plate 12. A base plate 123 is fixedly connected to the bottom of the generator body 13. The base plate 123 is fixed to the bottom of the generator body 13 by welding. The base plate 123 is inserted into the opening 122 at the bottom of the nacelle 1. The I-beam steel frames 121 provide stable support and disperse vibration.The reinforcement component 3 includes a fixing block 31 fixedly connected to the bottom of the base plate 123. A rotating rod 32 is rotatably connected inside the fixing block 31. Threaded holes are provided on both the left and right sides of the rotating rod 32, with the threads in the two holes arranged in opposite directions. An external hexagonal block 33 is fixedly connected to the outer surface of the rotating rod 32. The external hexagonal block 33 is located on the left side of the fixing block 31 and is fixed to the rotating rod 32 by welding. The center of the rotating rod 32 has a protrusion for limiting its movement. The external hexagonal block 33 allows workers to rotate the rotating rod 32 using a wrench or other tools. Threaded rods 34 are threaded into the two threaded holes inside the rotating rod 32, with the threads on the two threaded rods 34 arranged in opposite directions. Clamping blocks 35 are fixedly connected to the sides of the two threaded rods 34 that are furthest from each other. After the generator body 13 is installed, the base plate 123 is inserted into the opening 122. Workers use a wrench to rotate the external hexagonal block 33 clockwise, causing the rotating rod 32 to rotate as well. At this time, the two threaded rods 34 will... The two clamping blocks 35 are moved away from each other. When the protruding teeth on the surface of the clamping blocks 35 contact the inner wall of the opening 122, they will be squeezed and fixed, thereby reinforcing the generator body 13, making the generator body 13 more stable, and further reducing the vibration of the generator body 13. Among them, the side of the clamping block 35 facing the inner wall of the opening 122 is provided with protruding teeth to increase the friction. When the protruding teeth on the surface of the clamping block 35 contact the inner wall of the opening 122, they will be squeezed and fixed, reinforcing the generator body 13; the rotating rod 32 in When rotated, the two threaded rods 34 move closer or further apart, and the two clamping blocks 35 move horizontally following the two threaded rods 34 respectively. The bottom of the base plate 123 has several sliding grooves 124. Two limiting blocks 36, whose shapes match the sliding grooves 124, are fixedly connected to the top of the clamping blocks 35. The limiting blocks 36 slide within the sliding grooves 124, limiting the clamping blocks 35 and causing them to move in a linear manner. The limiting blocks 36 are square, and the sliding grooves 124 are long rectangular.

[0037] One specific application of this embodiment is:

[0038] In use, the generator body 13 is hoisted from the top of the nacelle 1 and placed into the nacelle 1. The generator body 13 is then positioned on the partition plate 12, where the positioning seat 212 will engage with the fixing plate 211 on the side of the generator body 13, thus positioning the generator body 13. This not only aligns the holes but also reduces movement of the generator body 13. At this time, the connecting plate 22 will engage with the H-shaped mating plate 23. Then, the operator can insert bolts into the fixing plate 211 and thread them onto the partition plate 12 to lock the generator body 13 onto the partition plate 12. Finally, the fixing bolts 24 are inserted into the H-shaped mating plate 23. The connecting plate 22 and the connecting plate 23 are fixed together with nuts. At this time, the connecting plate 22 is fixed to the H-shaped connecting plate 23. This connection method can disperse the vibration generated by the generator body 13 during operation to the connecting plate 22 and the H-shaped connecting plate 23 and transmit it to the nacelle 1, thereby effectively reducing most of the vibration, improving the stability of the generator body 13 during operation, and reducing the occurrence of loose bolts. In addition, since multiple I-shaped steel frames 121 are installed at the bottom of the partition plate 12, the vibration force can be absorbed and transmitted again, thereby reducing the vibration again. Furthermore, the setting of the I-shaped steel frames 121 can make it more stable.

[0039] After the generator body 13 is installed, the bottom plate 123 of the generator body 13 will be inserted into the opening 122. The operator uses a wrench to turn the outer hexagon block 33 clockwise to drive the rotating rod 32 to rotate together. Since the two threaded rods 34 are set with opposite threads, and the two threads inside the rotating rod 32 are also set with opposite threads, when the rotating rod 32 rotates clockwise, it will drive the two threaded rods 34 to move away from each other. At this time, the two clamping blocks 35 will move away from each other together, and the limiting block 36 will slide in the slide groove 124 to play a limiting role, so that the clamping block 35 moves in a straight line. When the protruding teeth on the surface of the clamping block 35 come into contact with the inner wall of the opening 122, they will squeeze and fix, thereby reinforcing the generator body 13, making the generator body 13 more stable, and further reducing the vibration of the generator body 13.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A vibration damping mechanism for a wind turbine, comprising a nacelle (1), wherein a nacelle cover plate (11) is bolted to the top of the nacelle (1), a partition plate (12) is fixedly connected to the inner wall of the nacelle (1), and a generator body (13) is positioned on the top of the partition plate (12), characterized in that, Also includes: A vibration damping mechanism (2) is installed on the outside of the generator body (13) and is used to disperse the vibration generated when the generator body (13) is working. A reinforcement component (3) is installed at the bottom of the generator body (13) and is used to reinforce the generator body (13); The nacelle cover (11) is detachable. After the nacelle cover (11) is opened, it is used to install the generator body (13) in the nacelle (1) or to remove the generator body (13) from the nacelle (1).

2. The vibration damping mechanism for a wind turbine generator according to claim 1, characterized in that, The shock absorption mechanism (2) includes a positioning component (21), which is installed on the side of the generator body (13) and is used to position the generator body (13) during installation. It also includes several connecting plates (22) fixedly connected to the outside of the generator body (13), with H-shaped docking plates (23) inserted into the outside of the connecting plates (22), and fixing bolts (24) inserted into the inside of the H-shaped docking plates (23); The H-shaped docking plate (23) is fixedly connected to the interior of the cabin (1) on the side away from the connecting plate (22). The fixing bolts (24) pass through the H-shaped docking plate (23) and the connecting plate (22) respectively. Locking nuts are installed on the fixing bolts (24) to lock and fix the connecting plate (22) and the H-shaped docking plate (23).

3. The vibration damping mechanism for a wind turbine generator according to claim 2, characterized in that, The positioning component (21) includes several fixing plates (211) fixedly connected to the bottom of the outer side of the generator body (13). A positioning seat (212) is inserted into the outer side of the fixing plate (211), and the bottom of the positioning seat (212) is fixedly connected to the top of the partition plate (12). The fixing plate (211) and the positioning seat (212) are inserted to position the generator body (13) during installation and to prevent the generator body (13) from moving after installation. At the same time, the fixing plate (211) and the positioning seat (212) are inserted to align the mounting holes.

4. The vibration damping mechanism for a wind turbine generator according to claim 2, characterized in that, The bottom of the partition (12) is fixedly connected to several I-shaped steel frames (121), the bottom of the I-shaped steel frames (121) is fixedly connected to the bottom of the inner wall of the engine room (1), the partition (12) has an opening (122) inside, and the bottom of the generator body (13) is fixedly connected to a base plate (123). The base plate (123) is inserted into the opening (122) at the bottom of the cabin (1), and the I-beam steel frame (121) is used to provide stable support and to disperse vibration force.

5. The vibration damping mechanism for a wind turbine generator according to claim 4, characterized in that, The reinforcement component (3) includes a fixing block (31) fixedly connected to the bottom of the base plate (123). A rotating rod (32) is rotatably connected inside the fixing block (31). Threaded holes are provided on the left and right sides of the rotating rod (32). The threads in the two threaded holes are arranged in opposite directions. An external hexagonal block (33) is fixedly connected to the outer surface of the rotating rod (32). The rotating rod (32) has a protrusion at its center to limit its movement, and the external hexagonal block (33) allows workers to rotate the rotating rod (32) using tools such as wrenches.

6. The vibration damping mechanism for a wind turbine generator according to claim 5, characterized in that, The two threaded holes inside the rotating rod (32) are each threaded with a threaded rod (34), the threads on the two threaded rods (34) are set in opposite directions, and a clamping block (35) is fixedly connected to the side of the two threaded rods (34) that is far apart from each other. The clamping block (35) has protruding teeth on the side facing the inner wall of the opening (122) to increase friction. When the rotating rod (32) rotates, it will drive the two threaded rods (34) to move closer or further away from each other. At this time, the two clamping blocks (35) will move horizontally with the two threaded rods (34) respectively.

7. The vibration damping mechanism for a wind turbine generator according to claim 6, characterized in that, The bottom of the base plate (123) has several sliding grooves (124). The top of the clamping block (35) is fixedly connected to two limiting blocks (36) that are adapted to the shape of the sliding grooves (124). The limiting blocks (36) slide in the sliding grooves (124) and are used to limit the clamping block (35) so that the clamping block (35) moves in a straight line.

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