Vibration damping device and wind turbine generator set

Abstract

The present application discloses a vibration damping device and a wind turbine generator set. The vibration damping device includes: a support member including a frame and a guiding portion, the guiding portion being disposed on the frame and extending along a first direction; a damping member disposed on the support member, the damping member including a mass block and a first restoring member connected to each other, the mass block being movably connected to the guiding portion and capable of reciprocating along the first direction, the moving stroke of the mass block including a first stroke region and a second stroke region, the second stroke region being located on at least one side of the first stroke region in the first direction, and a side of the first restoring member facing away from the mass block being connected to the frame for providing a force opposite to the moving direction of the mass block to the mass block; and an energy dissipation member configured to absorb the moving kinetic energy of the mass block when the mass block moves along the first direction to the second stroke region. The present application can improve the running stability and safety of the wind turbine generator set.

Description

Technical Field

[0001] This application relates to the technical field of vibration control of engineering structures, and particularly relates to a vibration damping device and a wind turbine generator set. Background Art

[0002] The tower is the support structure of a wind turbine, and its structural safety and stability are related to the safety and performance of the entire wind turbine. With the continuous increase in the capacity of wind turbine generator sets, the tower height has been continuously increasing, and the tower vibration problem has become increasingly prominent.

[0003] In order to ensure the safe and stable operation of the tower and the entire machine, damping devices are mostly installed on high towers to suppress the vibration of the tower and ensure the safe operation of the unit. However, for high-flexibility towers, there are some extreme conditions where the top of the tower vibrates violently, and the current damping and vibration reduction devices cannot ensure the safe and stable operation of the wind turbine generator set. Summary of the Invention

[0004] Embodiments of this application provide a vibration damping device and a wind turbine generator set, aiming to improve the safety and stability of the wind turbine generator set.

[0005] In a first aspect, embodiments of this application provide a vibration damping device. The vibration damping device includes: a support component, including a frame and a guiding portion, the guiding portion is disposed on the frame and extends along a first direction; a damping component, disposed on the support component, the damping component includes a mass block and a first restoring member connected to each other, the mass block is movably connected to the guiding portion and can reciprocate along the first direction, the moving stroke of the mass block includes a first stroke area and a second stroke area, the second stroke area is located on at least one side of the first stroke area in the first direction, and one side of the first restoring member facing away from the mass block is connected to the frame to provide a force opposite to the moving direction of the mass block to the mass block; an energy-consuming component, the energy-consuming component is configured to absorb the moving kinetic energy of the mass block when the mass block moves along the first direction to the second stroke area.

[0006] When the mass block reciprocates along the first direction due to an external action and moves from the first stroke area to the second stroke area, the energy-consuming component can absorb the moving kinetic energy of the mass block, so that the moving kinetic energy and moving speed of the mass block are rapidly reduced, and thus the collision energy between the mass block and the frame can be reduced or the collision between the mass block and the frame can be avoided.

[0007] According to the foregoing embodiment of the first aspect of this application, second stroke areas are provided on both sides of the first stroke area in the first direction; the ratio of the first stroke area to the moving stroke is 0 to 0.8.

[0008] According to any of the foregoing embodiments of the first aspect of the present application, the energy-consuming component includes an eddy current energy-consuming assembly; the eddy current energy-consuming assembly includes a conductor plate and a permanent magnet group, one of the conductor plate and the permanent magnet group is connected to the frame, and when the mass moves to the second stroke area, it can drive the other of the conductor plate and the permanent magnet group to move, and make the permanent magnet group and the conductor plate move relative to each other and generate eddy currents in the conductor plate.

[0009] The relative movement between the permanent magnet group and the conductor plate is used to convert the moving kinetic energy of the mass into electrical energy and finally into heat energy dissipation, thereby decelerating the mass.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, when the mass moves to the second stroke area, the permanent magnet group and the conductor plate are arranged opposite to each other, and there is an air gap between the permanent magnet group and the conductor plate; the air gap between the conductor plate and the permanent magnet group gradually decreases along the direction away from the first stroke area; or the second stroke drive includes a first sub-stroke area and a second sub-stroke area, the second sub-stroke area is located on the side of the first sub-stroke area facing away from the first stroke area in the first direction, and the air gap between the conductor plate and the permanent magnet group when the mass moves to the second sub-stroke area is smaller than the air gap between the conductor plate and the permanent magnet group when the mass moves to the first sub-stroke area.

[0011] The smaller the air gap, the higher the energy-consuming efficiency of the eddy current energy-consuming assembly, and the greater the damping force generated to hinder the relative movement. The air gap between the conductor plate and the permanent magnet group is set to gradually decrease or decrease step by step along the direction away from the first stroke area, so that after the mass moves to the second stroke area, the farther the mass is from the first stroke area, the faster the consumption efficiency of its kinetic energy and the faster the deceleration. Therefore, it can effectively prevent the mass from colliding with the frame.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, the eddy current energy-consuming assembly further includes a magnetic conduction plate for magnetic conduction, the conductor plate and the magnetic conduction plate are stacked, the conductor plate is located on the side of the magnetic conduction plate facing the permanent magnet group, the conductivity of the conductor plate is greater than that of the magnetic conduction plate, and the magnetic permeability of the magnetic conduction plate is greater than that of the conductor plate.

[0013] Setting the magnetic conduction plate to guide the magnetic lines of force of the permanent magnet group can reduce the leakage of magnetic lines of force and further improve the energy-consuming efficiency of the eddy current energy-consuming assembly.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the eddy current energy-consuming assembly is a plate-type eddy current assembly, and one of the conductor plate and the permanent magnet group is arranged in the second stroke area, and the other is connected to the mass.

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the eddy current energy-consuming component is a disc-type eddy current component. The energy-consuming member further includes a rotating disc and a first conversion component. The rotating disc is connected to the first conversion component, and the other of the conductor plate and the permanent magnet group is connected to the rotating disc. When the mass block moves away from the first stroke area in the second stroke area, the rotating disc is rotated around its own central axis through the first conversion component.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the first conversion component includes a first sliding member, a first rack, a first gear, and a first rotating shaft. The first sliding member is disposed on the moving path of the mass block and is located in the second stroke area. The first rack is disposed on the frame and extends along the first direction. The first gear is mounted on the first rotating shaft and is meshed with the first rack. The rotating disc is connected to the first gear, and the first sliding member is rotatably connected to the first rotating shaft. The energy-consuming member further includes a second reset member for returning the first sliding member to the position where the second stroke area is connected to the first stroke area.

[0017] According to any of the foregoing embodiments of the first aspect of the present application, the first reset member includes a spring. The first reset members are disposed on both sides of the mass block in the first direction, and the first reset members extend along the first direction. The second reset member includes a spring, the second reset member extends along the first direction, one end of the second reset member is connected to the first sliding member, and the other end is connected to the frame.

[0018] According to any of the foregoing embodiments of the first aspect of the present application, the energy-consuming member further includes a rotating energy-consuming component and a second conversion component. The rotating energy-consuming component includes a flywheel. When the mass block moves away from the first stroke area in the second stroke area, the flywheel can be driven to rotate through the second conversion component.

[0019] The moving kinetic energy of the mass block is converted into the rotational kinetic energy of the flywheel by using the second conversion component to decelerate the mass block. Moreover, the faster the moving speed of the mass block, the higher the rotational speed of the flywheel, and the better the deceleration effect on the mass block. Therefore, it can effectively prevent the mass block from colliding with the frame.

[0020] According to any of the foregoing embodiments of the first aspect of the present application, the second conversion component includes a second sliding member, a second rack, a second gear, and a second rotating shaft. The second sliding member is disposed on the moving path of the mass block and is located in the second stroke area. The second rack is disposed on the frame and extends along the first direction. The second gear is mounted on the second rotating shaft and is meshed with the second rack. The flywheel is connected to the second gear, and the second sliding member is rotatably connected to the second rotating shaft. The energy-consuming member further includes a third reset member for returning the second sliding member to the position where the second stroke area is connected to the first stroke area.

[0021] According to any of the foregoing embodiments of the first aspect of the present application, the energy-consuming component further includes a wind resistance plate for applying resistance to the movement of the mass block, and the wind resistance plate is disposed on the flywheel.

[0022] When the mass block moves, by applying resistance to the movement of the mass block through the wind resistance plate, the deceleration efficiency of the mass block can be further improved.

[0023] According to any of the foregoing embodiments of the first aspect of the present application, the wind resistance plates are radially distributed around the central axis of the flywheel, and the plane where the wind resistance plates are located is perpendicular to the disk surface of the flywheel.

[0024] According to any of the foregoing embodiments of the first aspect of the present application, in the length direction of the wind resistance plate, the width of each wind resistance plate gradually increases or increases stepwise in the direction away from the center of the flywheel.

[0025] The larger the width dimension of the wind resistance plate, the greater the blocking force applied to the rotation of the flywheel. The farther the wind resistance plate is from the center of the flywheel, the greater the blocking torque applied by the wind resistance plate to the rotation of the flywheel, and the higher the deceleration efficiency of the mass block.

[0026] In a second aspect, an embodiment of the present application provides a wind turbine generator, including the vibration damping device as described in any of the previous embodiments.

[0027] For the vibration damping device and the wind turbine generator provided by the embodiments of the present application, the vibration damping device includes a support component, a damping component, and an energy-consuming component. The damping component includes a mass block that can reciprocate in a first direction. The moving stroke of the mass block includes a first stroke area and a second stroke area. When the mass block moves from the first stroke area to the second stroke area, the moving kinetic energy of the mass block is absorbed by the energy-consuming component, so that the moving kinetic energy and moving speed of the mass block are rapidly reduced, and the collision energy between the mass block and the frame can be reduced or the collision between the mass block and the frame can be avoided. When the vibration damping device is applied to the tower or nacelle of a wind turbine generator, the potential safety hazards caused by the collision of the mass block can be reduced, and the operating stability and safety of the wind turbine generator can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to actual scale.

[0029] Figure 1 is a schematic structural diagram of a wind turbine generator provided by an embodiment of the present application;

[0030] Figure 2 is an example of a vibration damping device provided by an embodiment of the present application;

[0031] Figure 3Schematic structural diagram of a vibration damping device provided by an embodiment of the present application;

[0032] Figure 4 For Figure 3 Lateral schematic diagram of the vibration damping device shown;

[0033] Figure 5 Schematic structural diagram of a vibration damping device provided by the second embodiment of the present application;

[0034] Figure 6 For Figure 5 Lateral schematic diagram of the vibration damping device shown;

[0035] Figure 7 Schematic structural diagram of a vibration damping device provided by the third embodiment of the present application;

[0036] Figure 8 Schematic structural diagram of a vibration damping device provided by the fourth embodiment of the present application;

[0037] Figure 9 For Figure 8 Side view of the flywheel in the vibration damping device shown.

[0038] Explanation of reference numerals:

[0039] 1 - Tower; 2 - nacelle; 3 - impeller;

[0040] 100 - Vibration damping device;

[0041] 110 - Frame; 120 - Guide part; 130 - Mass block; 140 - First reset member; 150 - Stop baffle;

[0042] 210 - Permanent magnet group; 220 - Conductor plate; 230 - Magnetic conductive plate;

[0043] 240 - Rotating disk;

[0044] 250 - First conversion component; 251 - First sliding member; 252 - First rack; 253 - First gear; 254 - First rotating shaft;

[0045] 260 - Second reset member;

[0046] 270 - Flywheel;

[0047] 280 - Second conversion component; 281 - Second sliding member; 282 - Second rack; 283 - Second gear; 284 - Second rotating shaft;

[0048] 290 - Air resistance plate;

[0049] Q1 - First stroke area; Q2 - Second stroke area. Detailed implementation manners

[0050] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present application by showing examples of the present application.

[0051] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article, or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the existence of additional identical elements in the process, method, article, or device comprising the said elements.

[0052] The tower is the support structure of a wind turbine, and its structural safety and stability are related to the safety and performance of the entire wind turbine. As the capacity of wind turbine generators continues to increase, the tower height continues to increase, and the tower vibration problem becomes more and more prominent.

[0053] To ensure the safe and stable operation of the tower and the entire machine, damping devices are mostly installed on high towers to suppress the vibration of the tower and ensure the safe operation of the unit. However, for high-flexibility towers, there are some extreme conditions where the top of the tower vibrates violently, causing the mass block of the damping device to move violently, generating a large speed or kinetic energy. Due to the limited space inside the unit, the mass block is bound to collide with the stop device inside the unit, and the excessive collision impact energy poses a great safety hazard to the operation of the damper and the unit.

[0054] To solve the above problems, the embodiments of the present application provide a vibration damping device and a wind turbine generator set. The following will be combined with the attached Figures 1 to 9 Each embodiment of the vibration damping device and the wind turbine generator set will be described.

[0055] Figure 1 It is a schematic structural diagram of a wind turbine generator set provided by an embodiment of the present application.

[0056] An embodiment of the present application provides a wind turbine generator set, which includes a tower 1, a nacelle 2 disposed on the tower 1, and a generator and an impeller 3 connected to the nacelle 2. The impeller 3 drives the rotor of the generator to rotate relative to the stator under the action of wind energy, converts the wind energy into electrical energy, transmits it to the power supply system and is used for other electrical equipment. To ensure the safe and stable operation of the tower 1 and the whole machine, a damping device 100 is usually provided in the tower 1 or the nacelle 2.

[0057] Figure 2 It is an example of a damping device provided by an embodiment of the present application.

[0058] An embodiment of the present application also provides a damping device 100, which can be disposed in the tower 1 and / or the nacelle 2 of the wind turbine generator set, and is used to damp the tower 1 and the whole machine of the wind turbine generator set to ensure the safe and stable operation of the wind turbine generator set.

[0059] The damping device 100 provided by the embodiment of the present application includes a support member, a damping member and an energy dissipation member.

[0060] The support member includes a frame 110 and a guiding portion 120, and the guiding portion 120 is disposed on the frame 110 and extends along a first direction (the X direction in the figure).

[0061] The damping member is disposed on the support member. The damping member includes a mass block 130 and a first restoring member 140 connected to each other. The mass block 130 is movably connected to the guiding portion 120 along the first direction, so that the mass block 130 can reciprocate along the first direction within a preset moving stroke. One side of the first restoring member 140 facing away from the mass block 130 is connected to the frame 110 to provide a force acting in the direction opposite to the movement direction of the mass block 130 to the mass block 130.

[0062] The moving stroke of the mass block 130 includes a first stroke area Q1 and a second stroke area Q2, and the second stroke area Q2 is located on at least one side of the first stroke area Q1 in the first direction. When the mass block 130 is in the initial state, that is, when the mass block 130 is stationary, the mass block 130 is in the first stroke area Q1, and the energy dissipation member is configured to absorb the moving kinetic energy of the mass block 130 when the mass block 130 moves along the first direction to the second stroke area Q2.

[0063] According to the damping device 100 provided by the embodiments of the present application, when the mass block 130 reciprocates in the first direction due to an external action, the first restoring member 140 generates a resistance to hinder the movement of the mass block 130, causing the mass block 130 to decelerate. When the mass block 130 moves from the first stroke area Q1 to the second stroke area Q2, the energy-consuming component further absorbs the moving kinetic energy of the mass block 130, rapidly reducing the moving kinetic energy and moving speed of the mass block 130, and being able to reduce the collision energy between the mass block 130 and the frame 110 or avoid the collision between the mass block 130 and the frame 110. When the damping device 100 is applied to the tower 1 or the nacelle 2 of a wind turbine generator, it can reduce the safety hazards caused by the collision of the mass block 130 and improve the running stability and safety of the wind turbine generator.

[0064] It can be understood that in the initial state, that is, when the mass block 130 is stationary, the mass block 130 can be within the first stroke area Q1. When the mass block 130 vibrates slightly due to an external action (i.e., the initial moving speed of the mass block 130 is small), the mass block 130 only reciprocates within the first stroke area Q1, and the energy-consuming component is not triggered. When the mass block 130 vibrates violently due to an external action (i.e., the vibration amplitude and the initial moving speed of the mass block 130 are large), the mass block 130 can move from the first stroke area Q1 to the second stroke area Q2 along the guiding portion 120. Therefore, for the damping device 100 provided by the embodiments of the present application, the energy-consuming component is only triggered when the mass block 130 vibrates violently, which can extend the service life of the energy-consuming component.

[0065] It should be noted that the present application does not specifically limit the proportion of the sizes of the first stroke area Q1, the second stroke area Q2 and the total moving stroke of the mass block 130. It can be understood that when the total moving stroke of the mass block 130 is certain, the smaller the proportion of the first stroke area Q1, the larger the proportion of the second stroke area Q2, the easier it is for the mass block 130 to move from the first stroke area Q1 to the second stroke area Q2 when vibrating under an external force, and the easier it is for the energy-consuming component to be triggered.

[0066] In some alternative embodiments, the ratio of the first stroke area Q1 to the moving stroke of the mass block 130 can be set between 0 and 0.8.

[0067] As an embodiment, the ratio of the first stroke area Q1 to the moving stroke of the mass block 130 can be 0, that is, the first stroke area Q1 can be not provided, and the moving stroke of the mass block 130 can only include the second stroke area Q2. At this time, as long as the mass block 130 moves in the first direction, the energy-consuming component will be triggered to achieve deceleration.

[0068] As another embodiment, the ratio of the first stroke area Q1 to the moving stroke of the mass block 130 can be 2 / 3, and the ratio of each second stroke area Q2 to the moving stroke of the mass block 130 can be 1 / 6.

[0069] In some alternative embodiments, second stroke regions Q2 may be provided on both sides of the first stroke region Q1 in the first direction. That is, the moving stroke of the mass 130 may include the first stroke region Q1 and two second stroke regions Q2. In the first direction, the first stroke region Q1 is located between the two second stroke regions Q2. When the mass 130 vibrates violently due to an external action, no matter which side of the first stroke region Q1 the mass 130 moves towards, it can be quickly decelerated by the energy-consuming component, so as to avoid collision or reduce the collision energy.

[0070] Optionally, the sizes of the two second stroke regions Q2 may be the same. In the initial state, the mass 130 may be located at the middle position of the first stroke region Q1 and be equidistant from the two second stroke regions Q2.

[0071] It can be understood that when the ratio of the first stroke region Q1 to the moving stroke of the mass 130 is 2 / 3, the ratio of each second stroke region Q2 to the moving stroke of the mass 130 is 1 / 6.

[0072] Of course, the setting manner of the second stroke region Q2 is not limited to this. For example, in some embodiments, the sizes of the two second stroke regions Q2 may also be set to be different, or the second stroke region Q2 may be provided only on one side of the first stroke region Q1, which can be applicable to the case where the external force mostly causes the mass 130 to move unidirectionally in the first stroke region Q1, and is also within the protection scope of the present application.

[0073] It can be understood that in the use state of the shock absorber 100, the first direction is generally parallel to the horizontal plane. For the convenience of description and understanding, hereinafter, taking the second direction intersecting with the first direction and parallel to the horizontal plane and the third direction (the Z direction in the figure) as the up-and-down direction perpendicular to the horizontal plane as an example, the structure of the shock absorber 100 will be described.

[0074] In some alternative embodiments, the guiding portion 120 may be provided on the bottom plate (and / or top plate) of the frame 110. At the same time, a slider is provided on the side of the mass 130 facing the bottom plate (and / or top plate). The slider is snap-fitted and slidably connected to the guiding portion 120. The provision of the guiding portion 120 can guide the movement of the mass 130. Optionally, the guiding portion 120 may be a slide rail or a guide rod.

[0075] To improve the movement stability of the mass 130, a plurality of guiding portions 120 may be provided. The plurality of guiding portions 120 are spaced apart in the second direction. The second direction may be perpendicular to the first direction.

[0076] Of course, the guiding portion 120 may also be provided on two opposite side plates of the frame 110 in the second direction, which is also within the protection scope of the present application.

[0077] In some alternative embodiments, first resetting members 140 are disposed on both sides of the mass block 130 in the first direction. The first resetting members 140 may extend in the first direction. One end of each first resetting member 140 is connected to the mass block 130, and the other end is connected to the frame 110.

[0078] There are various types of the first resetting members 140. Optionally, the first resetting members 140 may be springs or elastic rubber rods.

[0079] In some alternative embodiments, the damping device 100 provided in the embodiments of the present application may further include a stop plate 150. The stop plate 150 is disposed inside the two side plate surfaces of the frame 110 that are opposite to each other in the first direction. The stop plate 150 may be made of materials such as rubber or sponge. The provision of the stop plate 150 can reduce the impact when the mass block 130 collides with the frame 110, and further improve the stability of the wind turbine generator set.

[0080] Figure 3 Schematic structural diagram of a damping device provided in an embodiment of the present application; Figure 4 For Figure 3 Lateral schematic diagram of the damping device shown.

[0081] There are various energy-consuming components that can absorb the moving kinetic energy of the mass block 130. In some alternative embodiments, the energy-consuming component may include an eddy current energy-consuming assembly. The eddy current energy-consuming assembly includes a conductor plate 220 and a permanent magnet group 210. One of the conductor plate 220 and the permanent magnet group 210 is connected to the frame 110. When the mass block 130 moves to the second stroke area Q2, it can drive the other of the conductor plate 220 and the permanent magnet group 210 to move, so that the permanent magnet group 210 and the conductor plate 220 generate relative movement and eddy currents are generated in the conductor plate 220.

[0082] When the permanent magnet group 210 and the conductor plate 220 move relatively, the conductor plate 220 cuts the magnetic force lines of the permanent magnet group 210, so that eddy currents are generated in the conductor plate 220. The relative movement between the permanent magnet group 210 and the conductor plate 220 is used to convert the moving kinetic energy of the mass block 130 into electrical energy and finally into heat energy for dissipation, thereby achieving the purpose of decelerating the mass block 130.

[0083] It can be understood that the faster the moving speed of the mass block 130 is, the faster the relative moving speed between the permanent magnet group 210 and the conductor plate 220 is, the higher the energy-consuming efficiency of the eddy current energy-consuming assembly is, and the better the decelerating effect on the mass block 130 is. Thus, it can effectively prevent the mass block 130 from colliding with the frame 110.

[0084] It can be understood that when the mass block 130 moves to the second stroke area Q2, the permanent magnet group 210 and the conductor plate 220 are arranged opposite to each other, and there is an air gap between the permanent magnet group 210 and the conductor plate 220. Optionally, the air gap between the permanent magnet group 210 and the conductor plate 220 can be set between 2 mm and 10 mm.

[0085] In some alternative embodiments, the air gap between the permanent magnet group 210 and the conductor plate 220 can gradually decrease along the direction away from the first stroke area Q1.

[0086] It can be understood that, under the condition that other factors remain unchanged, the smaller the air gap between the permanent magnet group 210 and the conductor plate 220, the higher the energy consumption efficiency of the eddy current generated by the conductor plate 220 cutting the magnetic induction line, and the greater the damping force that hinders the relative movement. Then, after the mass block 130 moves to the second stroke area Q2, the farther the mass block 130 is from the first stroke area Q1, the greater the damping force it receives and the faster it decelerates.

[0087] Optionally, the reduction of the air gap can be achieved by inclining one of the conductor plate 220 and the permanent magnet group 210 arranged on the frame 110.

[0088] In some alternative embodiments, the air gap between the permanent magnet group 210 and the conductor plate 220 can also decrease stepwise along the direction away from the first stroke area Q1.

[0089] Optionally, the second stroke drive Q2 can include a first sub-stroke area and a second sub-stroke area. The second sub-stroke area is located on the side of the first sub-stroke area facing away from the first stroke area Q1 in the first direction. When the mass block 130 moves to the second sub-stroke area, the air gap between the conductor plate 220 and the permanent magnet group 210 is smaller than the air gap between the conductor plate 220 and the permanent magnet group 210 when the mass block 130 moves to the first sub-stroke area.

[0090] Optionally, each permanent magnet group 210 can include two permanent magnets arranged at intervals. The magnetization directions of the two permanent magnets are opposite, so that a closed magnetic line can be formed between the two permanent magnets. The magnetization directions of the two permanent magnets can both be perpendicular to the plane where the conductor plate 220 is located, which can improve the energy consumption efficiency of the eddy current energy consumption component. Among them, the magnetization direction of the permanent magnet is the connection direction of the N pole and the S pole of the permanent magnet.

[0091] In some alternative embodiments, the eddy current energy dissipation component may further include a magnetic conductive plate 230 for magnetic conduction. The conductor plate 220 and the magnetic conductive plate 230 are stacked, and the conductor plate 220 is located on the side of the magnetic conductive plate 230 facing the permanent magnet group 210. The conductivity of the conductor plate 220 is greater than that of the magnetic conductive plate 230, and the magnetic permeability of the magnetic conductive plate 230 is greater than that of the conductor plate 220. Setting the magnetic conductive plate 230 to guide the magnetic lines of force of the permanent magnet group 210 can reduce the leakage of magnetic lines of force and further improve the energy dissipation efficiency of the eddy current energy dissipation component.

[0092] As an alternative embodiment, the conductor plate 220 can be selected as a copper plate, and the magnetic conductive plate 230 can be selected as an iron plate. The copper plate has a smaller resistance, and the current generated when the conductor plate 220 cuts the magnetic lines of force of the permanent magnet group 210 is larger. The iron plate has a better magnetic permeability.

[0093] Optionally, the thickness of the conductor plate 220 can be set between 5 mm and 10 mm, and the thickness of the magnetic conductive plate 230 can be set between 8 mm and 15 mm.

[0094] Of course, the materials and thicknesses of the conductor plate 220 and the magnetic conductive plate 230 are not limited to the above embodiments and can be selected and adjusted according to actual needs.

[0095] In some alternative embodiments, the eddy current energy dissipation component can be selected as a plate-type eddy current component. The relative translation of the conductor plate 220 and the permanent magnet group 210 cuts the magnetic induction lines to generate eddy currents. One of the conductor plate 220 and the permanent magnet group 210 can be arranged in the second stroke area Q2, and the other can be connected to the mass block 130.

[0096] Optionally, the conductor plate 220 can be arranged on the frame 110 and located in the second stroke area Q2, and the permanent magnet group 210 can be arranged on the mass block 130. In the case of the same energy dissipation efficiency, the number of permanent magnet groups 210 arranged can be reduced, saving costs.

[0097] It can be understood that the conductor plate 220 can be arranged on the bottom plate of the frame 110, and the permanent magnet group 210 can be arranged on the side of the mass block 130 facing the bottom plate. Of course, the conductor plate 220 can also be arranged on the top plate of the frame 110 or the side plate in the second direction. Correspondingly, the permanent magnet group 210 can be arranged on the side of the mass block 130 facing the conductor plate 220. When the permanent magnet group 210 is arranged on the mass block 130, the permanent magnet can be arranged on the corresponding outer surface of the mass block 130, or the permanent magnet can be embedded in the mass plate.

[0098] Of course, the permanent magnet group 210 can also be arranged on the frame 110, and at the same time, the conductor plate 220 can be arranged on the mass block 130, which is also within the protection scope of the present application.

[0099] Optionally, to improve the energy consumption efficiency of the plate eddy current assembly, the number of the permanent magnet groups 210 can be set to be multiple, and the multiple permanent magnet groups 210 can be arranged at intervals in the second direction.

[0100] Figure 5 FIG. 4 is a schematic structural diagram of a vibration damping device provided in the second embodiment of the present application; Figure 6 For Figure 5 a side view of the vibration damping device shown.

[0101] In some other alternative embodiments, the eddy current energy consumption assembly can be a disc-type eddy current assembly, and eddy currents are generated by cutting magnetic induction lines through the relative rotation of the conductor plate 220 and the permanent magnet group 210.

[0102] To enable the relative rotation of the conductor plate 220 and the permanent magnet group 210, the energy consumption component can further include a rotating disc 240 and a first conversion component 250. One of the conductor plate 220 and the permanent magnet group 210 is connected to the frame 110, and the other is connected to the rotating disc 240. The rotating disc 240 is connected to the first conversion component 250. When the mass block 130 moves away from the first stroke area Q1 in the second stroke area Q2, the rotating disc 240 is caused to rotate around its own central axis through the first conversion component 250. When the rotating disc 240 rotates around its own central axis, the relative rotation of the conductor plate 220 and the permanent magnet group 210 is caused, and thus the conductor plate 220 cuts the magnetic induction lines to generate eddy currents.

[0103] Optionally, the conductor plate 220 can be disposed on the frame 110, and the permanent magnet group 210 can be connected to the rotating disc 240. In the case of the same energy consumption efficiency, the number of the permanent magnet groups 210 can be reduced, and the cost can be saved.

[0104] Optionally, to improve the energy consumption efficiency of the disc-type eddy current assembly, the number of the permanent magnet groups 210 can be set to be multiple, and the multiple permanent magnet groups 210 can be arranged in an array along at least one circular line with the center of the rotating disc 240 as the center.

[0105] There are multiple first conversion components 250. In some alternative embodiments, the first conversion component 250 may include a first sliding member 251, a first rack 252, a first gear 253, and a first rotating shaft 254. The first rack 252 is disposed on the frame 110 and extends along the first direction. The first gear 253 is mounted on the first rotating shaft 254 and meshes with the first rack 252. The rotating disk 240 is connected to the first gear 253. The central axes of the first rotating shaft 254 and the rotating disk 240 both extend along the second direction. The first sliding member 251 is rotatably connected to the first rotating shaft 254, and the first sliding member 251 is disposed on the moving path of the mass block 130 and is located in the second stroke area Q2. To enable the conductor plate 220 and the permanent magnet group 210 to be relatively arranged, the conductor plate 220 may be disposed on the side plate surface of the frame 110 in the second direction, and the permanent magnet group 210 is disposed on the disk surface of the rotating disk 240 facing the conductor plate 220.

[0106] When the mass block 130 moves in the second stroke area Q2 in a direction away from the first stroke area Q1, the mass block 130 pushes the first sliding member 251 and the first rotating shaft 254 to move synchronously. Since the first gear 253 is mounted on the first rotating shaft 254 and meshes with the first rack 252, the first gear 253 realizes translation through rotation. When the first gear 253 rotates, it drives the rotating disk 240 to rotate, thereby causing the conductor plate 220 and the permanent magnet group 210 to rotate relative to each other.

[0107] It can be understood that the smaller the diameter of the first gear 253, the faster the rotation speed of the first gear 253 when the mass block 130 pushes the first sliding member 251 to move. Therefore, the rotation speed of the first gear 253 can be changed by changing the diameter of the first gear 253, and then the rotation speed of the rotating disk 240 can be changed to adjust the energy consumption efficiency of the disk-type eddy current component.

[0108] Of course, the specific structure of the first conversion component 250 is not limited to this. For example, a lead screw nut mechanism may also be used. As long as the linear motion of the mass block 130 can be converted into the rotational motion of the rotating disk 240, it is within the protection scope of this application.

[0109] It can be understood that in the initial state, the sliding member may be located at the position where the second stroke area Q2 is connected to the first stroke area Q1. To ensure that the energy-consuming component can be triggered every time the mass block 130 moves in the first direction to the second stroke area Q2, the energy-consuming component may further include a second reset member 260. When the mass block 130 moves in the second stroke area Q2 in a direction away from the first stroke area Q1, the first sliding member 251 is pushed to one end of the second stroke area Q2 away from the first stroke area Q1. When the mass block 130 moves in the second stroke area Q2 in a direction close to the first stroke area Q1, the first sliding member 251 can be restored to the position where the second stroke area Q2 is connected to the first stroke area Q1 through the second reset member 260.

[0110] There are various types of the second reset member 260. Optionally, the second reset member 260 can be a spring or an elastic rubber rod. Optionally, the second reset member 260 can extend along the first direction. One end of the second reset member 260 can be connected to the frame 110, and the other end is connected to the first sliding member 251.

[0111] Optionally, a buffer layer can be provided on the side of the first sliding member 251 facing the mass block 130. The material of the buffer layer can be an elastic material such as rubber. Providing the buffer layer can reduce the impact generated when the mass block 130 contacts the sliding member and can effectively protect the sliding member.

[0112] In some alternative embodiments, there can be two conductor plates 220 and rotating disks 240. Correspondingly, a set of first racks 252, first gears 253, and first sliding members 251 are respectively provided at both ends of the first rotating shaft 254. The two conductor plates 220 are respectively disposed on two opposite side plate surfaces of the frame 110 in the second direction, and the two rotating disks 240 are provided in one-to-one correspondence with the two conductor plates 220; this can not only improve the energy consumption efficiency but also ensure the structural stability of the vibration damping device 100.

[0113] It can be understood that in some alternative embodiments, the vibration damping device 100 provided in the implementation of the present application can be provided with both a plate-type eddy current component and a disk-type eddy current component at the same time, which can further improve the energy consumption efficiency and make the mass block 130 decelerate faster.

[0114] Figure 7 It is a schematic structural diagram of a vibration damping device provided in the third embodiment of the present application.

[0115] In some alternative embodiments, the energy-consuming component can include a rotating energy-consuming component and a second conversion component 280; the rotating energy-consuming component can include a flywheel 270. When the mass block 130 moves away from the first stroke area Q1 in the second stroke area Q2, it can push the flywheel 270 to rotate through the second conversion component 280, convert the linear motion of the mass block 130 into the rotational motion of the flywheel 270 through the second conversion component 280, and utilize the flywheel 270 and the second conversion component 280 to convert the moving kinetic energy of the mass block 130 into the rotational kinetic energy of the flywheel 270 to achieve the deceleration of the mass block 130.

[0116] The structure of the second conversion component 280 has various forms. Optionally, the second conversion component 280 may adopt the same structure as the first conversion component 250. The second conversion component 280 includes a second sliding member 281, a second rack 282, a second gear 283, and a second rotating shaft 284. The second rack 282 is disposed on the frame 110 and extends along the first direction. The second gear 283 is mounted on the second rotating shaft 284 and meshes with the second rack 282. The flywheel 270 is connected to the second gear 283. The central axes of the second rotating shaft 284 and the rotating disk 240 both extend along the second direction. The second sliding member 281 is rotatably connected to the second rotating shaft 284, and the second sliding member 281 is disposed on the moving path of the mass block 130 and is located in the second stroke area Q2.

[0117] It can be understood that the faster the moving speed of the mass block 130 is, the higher the rotating speed of the flywheel 270 is, and the better the deceleration effect on the mass block 130 is, thereby effectively avoiding the collision between the mass block 130 and the frame 110.

[0118] Correspondingly, the energy-consuming component further includes a third reset member, and the third reset member is used to return the second sliding member 281 to the position where the second stroke area Q2 is connected to the first stroke area Q1, so as to ensure that the rotational energy-consuming component can be triggered every time the mass block 130 moves to the second stroke area Q2 along the first direction.

[0119] Optionally, the third reset member may be a spring; the third reset member may extend along the first direction, one end of the third reset member may be connected to the frame 110, and the other end is connected to the second sliding member 281.

[0120] In some alternative embodiments, two flywheels 270 may be provided. At the same time, a set of second rack 282, second gear 283, and second sliding member 281 are provided at each end of the second rotating shaft 284, and one flywheel 270 is connected to each second gear 283, which can not only improve the energy-consuming efficiency but also ensure the structural stability of the vibration damping device 100.

[0121] It can be understood that in order to decelerate the mass block 130 faster, in some alternative embodiments, a disk type eddy current component and a flywheel 270 may be provided at the same time. At this time, the flywheel 270 and the rotating disk 240 installed with the permanent magnet group 210 can share a conversion component that can convert linear motion into rotational motion.

[0122] Figure 8 Schematic structural diagram of a vibration damping device provided by the fourth embodiment of the present application; Figure 9 For Figure 8 Side view of the flywheel in the shown vibration damping device.

[0123] In some alternative embodiments, the energy-consuming component may further include a wind resistance plate 290, which applies a resistance to the movement of the mass block 130 to decelerate the mass block 130.

[0124] It can be understood that when the energy-consuming component includes the flywheel 270, the wind resistance plate 290 can be disposed on the flywheel 270. The faster the moving speed of the mass block 130 is, the higher the rotating speed of the flywheel 270 is, the greater the resistance applied by the wind resistance plate 290 to the movement of the mass block 130 is, and the better the deceleration effect on the mass block 130 is.

[0125] Optionally, the wind resistance plate 290 is installed on the disk surface of the flywheel 270. The wind resistance plates 290 can be radially distributed around the central axis of the flywheel 270, and the plane where the wind resistance plates 290 are located is perpendicular to the disk surface of the flywheel 270.

[0126] It can be understood that the wind resistance plate 290 is plate-shaped and has a certain length and width. The length direction of the wind resistance plate 290 can be along the radial direction of the flywheel 270, and the width direction can be perpendicular to the disk surface of the flywheel 270.

[0127] Optionally, the wind resistance plate 290 can be trapezoidal or triangular. In the length direction of the wind resistance plate 290, the width of each wind resistance plate 290 gradually increases along the direction away from the center of the flywheel 270.

[0128] Optionally, the wind resistance plate 290 can be stepped. In the length direction of the wind resistance plate 290, the width of the wind resistance plate 290 can increase stepwise along the direction away from the center of the flywheel 270.

[0129] It can be understood that the larger the width dimension of the wind resistance plate 290 is, the greater the blocking force applied to the rotation of the flywheel 270 is, the farther the wind resistance plate 290 is from the center of the flywheel 270, the greater the blocking torque applied by the wind resistance plate 290 to the rotation of the flywheel 270 is, and the higher the deceleration efficiency of the mass block 130 is.

[0130] It can be understood that when the energy-consuming component includes a disk-type eddy current assembly, the wind resistance plate 290 can also be disposed on the rotating disk 240. In order not to affect the installation of the permanent magnet group 210 (or the conductor plate 220), the wind resistance plate 290 can be disposed on the disk surface of the rotating disk 240 on the side facing away from the conductor plate 220 (or the permanent magnet group 210).

[0131] Optionally, the wind resistance plates 290 can be radially distributed around the central axis of the rotating disk 240, and the plane where the wind resistance plates 290 are located is perpendicular to the disk surface of the rotating disk 240.

[0132] It should be noted that for the vibration damping device 100 provided by the implementation of the present application, the energy-consuming components include but are not limited to at least one of a plate-type eddy current component, a disc-type eddy current component, a rotational energy-consuming component, and a wind resistance plate 290. Under the condition that the structural space and installation conditions permit, the energy-consuming components in the above forms can be arbitrarily superimposed and combined.

[0133] In accordance with the embodiments of the present application as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present application, so that those skilled in the art can make good use of the present application and its modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A vibration damping device, characterized in that, comprising: a support member including a frame (110) and a guiding portion (120), the guiding portion (120) being provided on the frame (110) and extending in a first direction; a damping member provided on the support member, the damping member including a mass block (130) and a first restoring member (140) connected to each other, the mass block (130) being movably connected to the guiding portion (120) and capable of reciprocatingly moving in the first direction, the moving stroke of the mass block (130) including a first stroke region (Q1) and a second stroke region (Q2), the second stroke region (Q2) being located on at least one side of the first stroke region (Q1) in the first direction, and a side of the first restoring member (140) facing away from the mass block (130) being connected to the frame (110) for providing a force to the mass block (130) in a direction opposite to the moving direction of the mass block (130); an energy dissipation member configured to absorb the moving kinetic energy of the mass block (130) when the mass block (130) moves in the first direction to the second stroke region (Q2); the energy dissipation member includes an eddy current energy dissipation assembly; the eddy current energy dissipation assembly includes a conductor plate (220) and a permanent magnet group (210), one of the conductor plate (220) and the permanent magnet group (210) being connected to the frame (110), when the mass block (130) moves to the second stroke region (Q2), it can drive the other of the conductor plate (220) and the permanent magnet group (210) to move, and make the permanent magnet group (210) and the conductor plate (220) move relative to each other and generate eddy currents in the conductor plate (220).

2. The vibration damping device according to claim 1, characterized in that, the second stroke regions (Q2) are provided on both sides of the first stroke region (Q1) in the first direction; the ratio of the first stroke region (Q1) to the moving stroke is 0 to 0.

8.

3. The vibration damping device according to claim 1, characterized in that, when the mass block (130) moves to the second stroke region (Q2), the permanent magnet group (210) and the conductor plate (220) are disposed opposite to each other, and there is an air gap between the permanent magnet group (210) and the conductor plate (220); the air gap between the conductor plate (220) and the permanent magnet group (210) gradually decreases along the direction away from the first stroke region (Q1); or the second stroke region (Q2) includes a first sub-stroke region and a second sub-stroke region, the second sub-stroke region is located on a side of the first sub-stroke region facing away from the first stroke region (Q1) in the first direction, and the air gap between the conductor plate (220) and the permanent magnet group (210) when the mass block (130) moves to the second sub-stroke region is smaller than the air gap between the conductor plate (220) and the permanent magnet group (210) when the mass block (130) moves to the first sub-stroke region.

4. The vibration damping device according to claim 3, characterized in that, the eddy current energy dissipation component further includes a magnetic conduction plate (230) for magnetic conduction, the conductor plate (220) and the magnetic conduction plate (230) are stacked, the conductor plate (220) is located on the side of the magnetic conduction plate (230) facing the permanent magnet group (210), the conductivity of the conductor plate (220) is greater than that of the magnetic conduction plate (230), and the magnetic permeability of the magnetic conduction plate (230) is greater than that of the conductor plate (220).

5. The vibration damping device according to claim 1, characterized in that, the eddy current energy dissipation component is a plate-type eddy current component, and one of the conductor plate (220) and the permanent magnet group (210) is arranged in the second stroke area (Q2), and the other is connected to the mass block (130).

6. The vibration damping device according to claim 1, characterized in that, the eddy current energy dissipation component is a disc-type eddy current component, the energy dissipation component further includes a rotating disc (240) and a first conversion component (250), the rotating disc (240) is connected to the first conversion component (250), and the other of the conductor plate (220) and the permanent magnet group (210) is connected to the rotating disc (240). When the mass block (130) moves away from the first stroke area (Q1) in the second stroke area (Q2), the rotating disc (240) is rotated around its own central axis through the first conversion component (250).

7. The vibration damping device according to claim 6, characterized in that, the first conversion component (250) includes a first sliding member (251), a first rack (252), a first gear (253) and a first rotating shaft (254). The first sliding member (251) is arranged on the moving path of the mass block (130) and is located in the second stroke area (Q2). The first rack (252) is arranged on the frame (110) and extends along the first direction. The first gear (253) is installed on the first rotating shaft (254) and is meshed with the first rack (252). The rotating disc (240) is connected to the first gear (253), and the first sliding member (251) is rotatably connected to the first rotating shaft (254); the energy dissipation component further includes a second reset member (260), and the second reset member (260) is used to return the first sliding member (251) to the position where the second stroke area (Q2) is connected to the first stroke area (Q1).

8. The vibration damping device according to claim 7, characterized in that, the first reset member (140) includes a spring, the first reset member (140) is arranged on both sides of the mass block (130) in the first direction, and the first reset member (140) extends along the first direction; The second reset member (260) includes a spring. The second reset member (260) extends along the first direction. One end of the second reset member (260) is connected to the first sliding member (251), and the other end is connected to the frame (110).

9. The damping device according to any one of claims 1 to 8, characterized in that the energy dissipation component further includes a rotational energy dissipation assembly and a second conversion assembly (280); the rotational energy dissipation assembly includes a flywheel (270). When the mass block (130) moves away from the first stroke area (Q1) in the second stroke area (Q2), the second conversion assembly (280) can drive the flywheel (270) to rotate.

10. The damping device according to claim 9, characterized in that the second conversion assembly (280) includes a second sliding member (281), a second rack (282), a second gear (283) and a second rotating shaft (284). The second sliding member (281) is arranged on the moving path of the mass block (130) and is located in the second stroke area (Q2). The second rack (282) is arranged on the frame (110) and extends along the first direction. The second gear (283) is mounted on the second rotating shaft (284) and is meshed and connected with the second rack (282). The flywheel (270) is connected to the second gear (283), and the second sliding member (281) is rotatably connected to the second rotating shaft (284); the energy dissipation component further includes a third reset member for returning the second sliding member (281) to a position where the second stroke area (Q2) is connected to the first stroke area (Q1).

11. The damping device according to claim 9, characterized in that the energy dissipation component further includes a wind resistance plate (290) for applying resistance to the movement of the mass block (130). The wind resistance plate (290) is arranged on the flywheel (270).

12. The damping device according to claim 11, characterized in that the wind resistance plate (290) is radially distributed around the central axis of the flywheel (270), and the plane where the wind resistance plate (290) is located is perpendicular to the disk surface of the flywheel (270).

13. A wind turbine generator, characterized in that it includes the damping device according to any one of claims 1 - 12.

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