Elastic supporting mechanism and wind generating set

Abstract

The invention relates to a wind generating set, and discloses an elastic supporting mechanism which comprises a supporting seat and a damping mechanism arranged in the supporting seat, and the damping mechanism comprises a magnetic conductor fixedly installed on a torque arm and a magnetic field assembly installed on the supporting seat. A hollow structure capable of forming a magnetic field is arranged in the magnetic field assembly, the magnetic conductor is arranged in the hollow structure in a penetrating manner, and a gap is formed between the outer peripheral surface of the magnetic conductor and the inner wall of the hollow structure; the magnetic conductor is driven by the torque arm to move in the axis direction of the hollow structure so that eddy current can be generated, and the moving direction of the magnetic conductor is perpendicular to a magnetic induction line formed in an internal magnetic field of the hollow structure. The elastic supporting mechanism is simple in structure, high in environmental adaptability, easy to replace and maintain, long in service life and good in damping effect.

Description

Technical Field

[0001] The present invention relates to a wind turbine generator set, in particular to an elastic support mechanism, and further to a wind turbine generator set having the elastic support mechanism. Background Art

[0002] With the rapid development of the wind power industry, the dynamic characteristics of the transmission chain of wind turbines have become increasingly complex. Faced with blade elastic flapping, wind shear, tower shadow effect, wake inflow, and floating wind turbines, the input load of the transmission chain system has great randomness and volatility with the changes in wind and waves. For this reason, a gearbox elastic support is set in the transmission chain of the wind turbine.

[0003] The gearbox elastic support is an important part of the wind turbine transmission chain and an important guarantee for the stable operation of the wind turbine. The gearbox elastic support directly affects the dynamic characteristics of the wind turbine transmission chain. Traditional gearboxes mainly include stacked spring gearbox elastic supports and hydraulic gearbox elastic supports.

[0004] The elastic support of the stacked spring gearbox mainly relies on the pre-compression of the rubber pad for vibration reduction. However, after long-term use, the rubber is prone to aging and cracking, and problems such as uneven bulging, degumming, and falling off will occur, which seriously shortens the service life of the elastic support and affects the normal operation of the wind turbine transmission chain. The hydraulic elastic support mainly relies on hydraulic pressure for vibration reduction. Since hydraulic oil has high requirements for the use environment, poor low-temperature characteristics, and high cost, it not only shortens the service life of the wind turbine transmission chain, but also increases the cost of production.

[0005] In addition, with the rapid development of the wind power industry, the dynamic characteristics of the wind turbine transmission chain have become increasingly complex, and the operating environment of wind turbines has become increasingly extensive. The traditional gearbox elastic support has insufficient adaptability in low temperature and high salt environments, and the random load impact under complex working conditions cannot effectively avoid resonance.

[0006] Therefore, it is necessary to design a new elastic support mechanism. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an elastic support mechanism, which has a simple structure, strong environmental adaptability, is easy to replace, easy to maintain, has a long service life and a good damping effect.

[0008] In order to achieve the above technical problems, the first aspect of the present invention provides an elastic support mechanism, including a support seat and a vibration reduction mechanism arranged inside the support seat; the vibration reduction mechanism includes a magnetic conductor fixedly mounted on a torque arm and a magnetic field assembly installed on the support seat, a hollow structure capable of forming a magnetic field is provided inside the magnetic field assembly, the magnetic conductor is passed through the hollow structure, and a gap is formed between the outer peripheral surface of the magnetic conductor and the inner wall of the hollow structure; wherein, the magnetic conductor moves along the axial direction of the hollow structure under the drive of the torque arm to generate eddy currents, and the moving direction of the magnetic conductor is perpendicular to the magnetic flux lines formed in the magnetic field inside the hollow structure.

[0009] Furthermore, a accommodating cavity into which the torque arm can be inserted is formed inside the support seat, the axis of the torque arm is perpendicular to the height direction of the support seat, and a gap is formed between the outer peripheral surface of the torque arm and the inner wall of the accommodating cavity, and the vibration damping mechanism is arranged between the upper surface of the accommodating cavity and the torque arm and between the lower surface of the accommodating cavity and the torque arm.

[0010] Furthermore, the magnetic field assembly includes an outer shell and an annular magnet disposed inside the outer shell, and a plurality of the annular magnets are sequentially disposed along the moving direction of the magnetic conductor via magnetic shoes.

[0011] Furthermore, a magnetized weak magnetic opening is provided on the outer shell so as to adjust the magnetic force of the annular magnet.

[0012] Furthermore, the magnetic field assembly is adjustably mounted on the support seat via an adjusting piece, the adjusting piece is an adjusting bolt, the adjusting bolt is adjustably arranged on the support seat, and one end of the adjusting bolt facing the torque arm abuts against one end of the magnetic field assembly facing away from the torque arm.

[0013] Furthermore, the magnetic field assembly is movably mounted on the support seat via an installation assembly, and the installation assembly includes a slide rail arranged on the inner wall of the accommodating cavity and a slider arranged on the side wall of the outer shell and matching the slide rail, and a limit block capable of abutting against the slider is formed at one end of the slide rail close to the torque arm.

[0014] Furthermore, it also includes a secondary vibration reduction structure, which includes a second anti-collision layer arranged at one end of the magnetic field component away from the torque arm and a buffer member arranged between the vibration reduction mechanism and the support seat.

[0015] Furthermore, a third anti-collision layer is formed at the end of the magnetic conductor away from one end of the torque arm.

[0016] Furthermore, it also includes a data acquisition mechanism, which includes an acceleration sensor and a frequency collector to collect the vibration frequency of the torque arm, and the acceleration sensor and the frequency collector are respectively connected to the main controller by wireless communication.

[0017] A second aspect of the present invention further discloses a wind turbine generator set, comprising the elastic support mechanism described in any one of the above technical solutions.

[0018] Through the above technical solution, the beneficial effects of the present invention are as follows: The elastic support mechanism provided by the first aspect of the present invention replaces the traditional rubber elastic support and hydraulic elastic support by using a magnetic conductor and a magnetic field assembly. On the one hand, it can avoid the aging problem of parts due to long-term use and extend the service life; on the other hand, the elastic support mechanism provided by the present invention can adapt to low-temperature environment and high-temperature environment, and has good adaptability. The elastic support mechanism provided by the present invention has a simple structure, is easy to install, and is a purely mechanical structure, which is easy to maintain, greatly reducing the cost of production and later maintenance.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a specific implementation mode of the elastic support mechanism of the present invention; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 It is a structural schematic diagram of a second specific implementation mode of the elastic support mechanism of the present invention.

[0021] Description of Reference Numerals DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "provided with", "installed", "matched", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate connector, and can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the said features.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "facing" and "backward", are defined based on the direction in which the elastic support mechanism is used. Specifically, in the drawings provided by the present invention, the orientation or positional relationship used is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0026] See also Figures 1 to 3 In a first aspect, the present invention provides an elastic support mechanism, comprising a support seat 1 and a shock-absorbing mechanism arranged inside the support seat 1, the shock-absorbing mechanism comprising a magnetic conductor 31 fixedly mounted on the torque arm 2 and a magnetic field assembly mounted on the support seat 1, a hollow structure 32 capable of forming a magnetic field is provided inside the magnetic field assembly, the magnetic conductor 31 is passed through the hollow structure 32, and a gap is formed between the outer peripheral surface of the magnetic conductor 31 and the inner wall of the hollow structure 32, wherein the magnetic conductor 31 moves along the axial direction of the hollow structure 32 under the drive of the torque arm 2 to generate eddy currents, and the moving direction of the magnetic conductor 31 is perpendicular to the magnetic flux lines 6 formed in the magnetic field inside the hollow structure 32.

[0027] It should be noted that the elastic support mechanism provided by the present invention has a simple structure and is easy to install. It can avoid the problems of cracking and aging of traditional rubber elastic supports after long-term use, thereby improving the overall service life of the elastic support. It can also avoid the problem that hydraulic elastic supports cannot be used in low-temperature environments and are expensive. It has good adaptability and low manufacturing cost. It should also be noted that, for the sake of ease of understanding, the "magnetic flux lines 6" mentioned in the above technical solution are Figure 2 In the figure, it is indicated by a dotted line.

[0028] It is understandable that the torque arm 2 of the gearbox of the wind turbine generator set will vibrate due to the influence of the entire structure and the installation environment when the wind turbine generator set is working. Therefore, the magnetic conductor 31 installed on the torque arm 2 will also vibrate due to the vibration of the torque arm 2, and a magnetic field is formed in the hollow structure 32 inside the magnetic field component. The movement direction of the magnetic conductor 31 is perpendicular to the direction of the magnetic induction intensity in the magnetic field, which can also be understood as perpendicular to the magnetic flux lines 6. Therefore, eddy currents will be generated during movement, and the interaction between the eddy currents and the magnetic field will generate Lorentz force. The Lorentz force can hinder the mutual movement of the magnetic conductor 31 and the magnetic field. Since the magnetic field component is installed The magnetic conductor 31 installed on the support frame cannot move, while the magnetic conductor 31 can move with the vibration of the torque arm 2. Therefore, under the premise that the Lorentz force hinders the mutual movement of the magnetic conductor 31 and the magnetic field, the magnetic conductor 31 will stop moving, thereby preventing the torque arm 2 from vibrating. It can also be understood that, under the premise that the Lorentz force hinders the mutual movement of the magnetic conductor 31 and the magnetic field, the eddy current generated by the magnetic conductor 31 due to the movement of the magnetic conductor 31 in the magnetic field is converted into heat energy due to the internal resistance of the magnetic conductor 31. Since the kinetic energy of the magnetic conductor 31 is converted into heat energy and consumed, the magnetic conductor 31 has no kinetic energy and cannot move, thereby producing a damping effect that prevents the torque arm 2 from vibrating.

[0029] Furthermore, as some specific embodiments of the present invention, a receiving cavity 11 capable of accommodating the insertion of the torque arm 2 is formed inside the support seat 1, the axis of the torque arm 2 is perpendicular to the height direction of the support seat 1, a gap is formed between the outer peripheral surface of the torque arm 2 and the inner wall of the receiving cavity 11, and a shock absorbing mechanism is arranged between the upper surface of the receiving cavity 11 and the torque arm 2 and between the lower surface of the receiving cavity 11 and the torque arm 2. When the wind turbine generator set is installed, since the transmission chain of the wind turbine generator set is flexibly installed, in order to improve the installation strength of the transmission chain and the frame, an elastic support is provided, and the torque arm 2 of the gear box is flexibly connected to the elastic support. Therefore, the elastic support mechanism provided by the present invention can provide support for the transmission chain of the wind turbine generator set on the one hand, and can also produce a damping effect on the vibration of the torque arm 2 of the gear box on the other hand.

[0030] In addition, since the vibration amplitude of the torque arm 2 is in the up and down direction, that is, Figure 2 In the direction perpendicular to the magnetic flux lines 6, therefore, a group of vibration reduction mechanisms are provided above and below the torque arm 2, that is, between the upper surface of the accommodating cavity 11 and the torque arm 2, and between the lower surface of the accommodating cavity 11 and the torque arm 2, so as to evenly disperse the force generated by the vibration of the torque arm 2, and also to produce a damping effect on the torque arm 2 from multiple directions, so that the damping force exerted on the torque arm 2 is more uniform.

[0031] It can be understood that, based on the above specific embodiments, the "axial direction of the hollow structure 32" is also the "moving direction of the magnetic conductor 31", and these two directions are also the height directions of the elastic support mechanism, and are perpendicular to the axial direction of the torque arm 2 of the gear box, where the "axial direction of the torque arm 2" is as follows: Figure 1 As shown, as a specific embodiment of the torque arm 2, a cross section of the torque arm 2 is shown, and the axis of the torque arm 2 is a straight line passing through the center point of the cross section.

[0032] Further, see Figure 3 As a specific implementation of the present invention, since the elastic support mechanism provided by the present invention also needs to provide support force for the transmission chain of the wind turbine generator set, the support base 1, as the main source of support force, includes an upper mounting plate 12, a lower mounting plate 13 and a column 14, wherein the upper mounting plate 12 is connected to the lower mounting plate 13 through the column 14, wherein, as some specific embodiments, in order to ensure the stability of the overall structure of the support base 1, the column 14 can be multiple, and the upper mounting plate 12, the lower mounting plate 13 and the column 14 together form a receiving cavity 11, and since the torque arm 2 will vibrate, in order To protect the torque arm 2, a first anti-collision layer 15 is provided on the working surface of the upper mounting plate 12 facing the torque arm 2, and on the working surface of the lower mounting plate 13 facing the torque arm 2. It can be understood that the first anti-collision layer 15 can be a rubber layer. Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce a large deformation under a very small external force. It can return to its original state after the external force is removed, and can provide good protection for the torque arm 2. In addition, because a vibration reduction mechanism is provided, the first anti-collision layer 15 does not often contact the torque arm 2, thereby extending the service life of the rubber.

[0033] See also Figure 1 and Figure 3 As a specific embodiment of the invention, the magnetic field assembly includes an outer shell 33 and an annular magnet 34 arranged inside the outer shell 33, wherein a plurality of annular magnets 34 are arranged in sequence along the moving direction of the magnetic conductor 31 through magnetic shoes 35. Due to the structural form of the annular magnets 34, the magnetic field assembly can naturally form a hollow structure 32 for the magnetic conductor 31 to move.

[0034] It should be noted that, as a preferred embodiment of the above-mentioned specific implementation method, the magnetic conductor 31 can be a copper tube, which has good magnetic conductivity and electrical conductivity, and can quickly generate eddy currents during movement to achieve a damping effect; the outer shell 33 can be made of magnetic steel, which generally refers to nickel-cobalt alloy, a strong metal with a hard texture, which can work normally at high temperatures above 500°C and has good corrosion resistance. It can not only enhance the overall structural stability and strength of the magnetic field assembly, but also cooperate with the magnetic conductor 31 to generate eddy currents; the annular magnet 34, due to the particularity of its own structure, can also form magnetic flux lines 6 inside the annular structure, that is, a magnetic field that can cause the magnetic conductor 31 to generate eddy currents during movement, and is easy to install; the magnetic shoe 35 is made of high magnetic permeability material, which can control the direction of the magnetic flux lines 6, can assist the annular magnet 34, control the direction of the magnetic field, control the magnetic field within the hollow structure 32, and cooperate with the magnetic conductor 31 to produce a damping effect.

[0035] Furthermore, in order to enable the elastic support mechanism provided by the present invention to be used in different environments, a magnetized weak magnetic interface is also provided on the outer shell 33 so as to adjust the magnetic induction intensity inside the magnetic field component according to the actual use environment.

[0036] Further, as a specific embodiment of the present invention, the magnetic field assembly is adjustably mounted on the support seat 1 through an adjusting member 41, the adjusting member 41 is an adjusting bolt, the adjusting bolt is adjustably arranged on the support seat 1, and one end of the adjusting bolt facing the torque arm 2 abuts against the end of the magnetic field assembly facing away from the torque arm 2. It can be understood that, if Figure 1 As shown, by extending the length of the adjusting member 41 into the internal accommodating cavity 11 of the support seat 1, the distance between the two relatively arranged magnetic field components can be adjusted, so as to adjust the movable space that the torque arm 2 can have when vibrating, so that it is more flexible when generating the damping effect on the torque arm 2, and play the effect of flexible damping, and will not be too direct to cause damage to the torque arm 2.

[0037] In addition, as a specific embodiment of the present invention, the magnetic field assembly is movably mounted on the support base 1 through the mounting assembly, such as Figure 3As shown, the mounting assembly includes a slide rail 42 arranged on the inner wall of the accommodating cavity 11 and a slider 43 arranged on the side wall of the outer shell 33 and capable of matching the slide rail 42. A limit block 44 is also arranged at the end of the slide rail 42 facing the torque arm 2. It can be understood that when in use, in order to better achieve flexible damping, the magnetic field assembly can move along the length direction of the slide rail 42, that is, the height direction of the elastic support mechanism. When the torque arm 2 vibrates, if the vibration amplitude is small, the magnetic field assembly will also be in the initial state, and the eddy current generated by the movement of the magnetic conductor in the hollow structure 32 interacts with the magnetic field to generate As for the damping effect on the torque arm 2, when the vibration amplitude of the torque arm 2 is large, it will cause a collision with the magnetic field assembly. In order to avoid damage between the magnetic field assembly and the torque arm 2 due to the collision force, the relatively arranged magnetic field assemblies will adjust the relative distance between each other according to the force generated by the vibration of the torque arm 2 to provide a suitable activity space for the torque arm 2. At the same time, the magnetic conductor 31 is driven by the torque arm 2 to move in the hollow structure 32 inside the magnetic field assembly, generating eddy currents. The eddy current field interacts with the magnetic field, and the generated Lorentz force will hinder the movement of the torque arm 2, thereby generating a damping effect on the torque arm 2 and reducing the vibration of the torque arm 2.

[0038] In order to enhance the self-regulation capability of the magnetic field assembly, a buffer 52 is further provided between the magnetic field assembly and the corresponding mounting plate. Figure 3 As shown, the buffer 52 can be a spring, which provides a certain supporting force for the magnetic field assembly. In the initial state, the spring is in a pop-up state. When the vibration amplitude of the torque arm 2 becomes larger, the spring is compressed by the magnetic field assembly, and the magnetic field assembly moves along the length direction of the slide rail 42 to be able to adjust the distance between the two magnetic field assemblies. As the vibration amplitude of the torque arm 2 becomes smaller, the spring uses the rebound force assembly to help the magnetic field assembly return to the initial state.

[0039] Because the vibration amplitude of the torque arm 2 will change, in order to protect the magnetic field assembly from collision with the support seat 1 when it moves to the extreme position, that is, when it cannot move along the slide rail 42 toward the end away from the torque arm 2, a second anti-collision layer 51 is provided at the end of the magnetic field assembly away from the torque arm 2. The second anti-collision layer 51 is preferably a rubber layer to provide a buffering effect for the magnetic field assembly when it contacts the support seat 1. Similarly, in order to avoid collision between the torque arm 2 and the magnetic field assembly, resulting in damage to both, an anti-collision rubber protective layer can also be provided at the end of the magnetic field assembly close to the torque arm 2.

[0040] Furthermore, as a specific embodiment of the present invention, because the magnetizer will move with the vibration of the torque arm 2, it is inevitable that the magnetizer will generate a collision force with the support seat 1. This collision force can also provide a damping force for the torque arm 2. In order to protect the magnetizer from being damaged, a third anti-collision layer 36 made of rubber material is provided at the end of the magnetizer away from the torque arm 2.

[0041] As a specific embodiment, the elastic support mechanism provided by the present invention also includes a data acquisition mechanism, which includes an acceleration sensor and a frequency collector so as to collect the vibration frequency of the torque arm 2, and the acceleration sensor and the frequency collector are respectively connected to the main controller for wireless communication.

[0042] It is understandable that the acceleration sensor is usually composed of a mass block, a damper, an elastic element, a sensitive element and an adaptive circuit. When the sensor senses the acceleration from the torque arm 2, the mass block will generate an inertial force, which will cause the elastic element to deform. The sensitive element detects this deformation and converts it into an electrical signal through the adaptive circuit and outputs it to the main controller; the frequency acquisition instrument can collect the vibration frequency of the torque arm 2 and convert it into an electrical signal and output it to the main controller. The main controller can be a main control PLC. The main control PLC introduces microelectronics technology, computer technology, automatic control technology and communication technology on the basis of the traditional sequential controller to form a new generation of industrial control devices. The purpose is to replace relays, execution logic, timing, counting and other sequential control functions, and establish a flexible remote control system. It has the characteristics of strong versatility, easy use, wide adaptability, high reliability, strong anti-interference ability and simple programming. In the present invention, the frequently used data required to control the torque arm 2 are input into the main control PLC, and a judgment is made through the real-time monitoring data of the acceleration sensor and the frequency acquisition instrument, and then the magnetic induction intensity inside the magnetic field component is controlled through the adjustment part 41 or the magnetized weak magnetic interface, so as to control the magnitude of the damping force exerted on the torque arm 2, realize real-time monitoring of the amplitude of the transmission chain of the wind turbine, and judge according to the monitoring data to provide corresponding damping force to the torque arm 2 of the gear box through the elastic support component, so that its operation is more intelligent, and it can allow the staff to understand the real-time working conditions of the transmission chain of the wind turbine in real time, which is convenient for later replacement and maintenance.

[0043] Secondly, in order to better understand the technical solution and usage method of the present invention, the preferred embodiments are described below in combination with relatively comprehensive preferred technical features. See also Figure 1The present invention provides an elastic support mechanism, including a support seat 1 and a vibration reduction mechanism, wherein the support seat 1 includes an upper mounting plate 12, a lower mounting plate 13 and a column 14, the upper mounting plate 12 is connected to the lower mounting plate 13 through the column 14, the upper mounting plate 12, the lower mounting plate 13 and the column 14 together form an accommodating chamber 11, a first anti-collision layer 15 made of rubber is arranged on the working surface of the upper mounting plate 12 facing the torque arm 2 and the working surface of the lower mounting plate 13 facing the torque arm 2, the accommodating chamber 11 can accommodate the torque arm 2 to be inserted, the axis of the torque arm 2 is perpendicular to the height direction of the support seat 1, and a gap is formed between the outer peripheral surface of the torque arm 2 and the inner wall of the accommodating chamber 11, the vibration reduction mechanism is arranged between the upper surface of the accommodating chamber 11 and the torque arm 2 and between the lower surface of the accommodating chamber 11 and the torque arm 2, and a damping effect is produced on the torque arm 2 in multiple directions.

[0044] The shock absorbing mechanism includes a magnetic conductor 31 fixedly mounted on the torque arm 2 and a magnetic field assembly mounted on the support seat 1. A hollow structure 32 capable of forming a magnetic field is provided inside the magnetic field assembly. The magnetic conductor 31 is arranged inside the hollow structure 32, and a gap is formed between the outer peripheral surface of the magnetic conductor 31 and the inner wall of the hollow structure 32. The magnetic conductor 31 moves along the axial direction of the hollow structure 32 under the drive of the torque arm 2 to generate eddy currents. The moving direction of the magnetic conductor 31 is perpendicular to the magnetic flux lines 6 formed in the magnetic field inside the hollow structure 32. The magnetic field assembly includes an outer shell 33 and an annular magnet 34 arranged inside the outer shell 33. A plurality of annular magnets 34 are arranged in sequence along the moving direction of the magnetic conductor 31 through a magnetic shoe 35. The magnetic field assembly is adjustably mounted on the support seat 1 through an adjusting piece 41. The adjusting piece 41 is an adjusting bolt. The adjusting bolt is adjustably arranged on the support seat 1, and the lower end face of the adjusting bolt abuts against the upper end face of the magnetic field assembly. The installation distance between the two magnetic field assemblies can be adjusted by adjusting the bolt, thereby controlling the vibration space of the torque arm 2; the magnetic conductor 31 is driven by the vibrating torque arm 2 and moves in the hollow structure 32 where the magnetic field is formed, and the moving direction is perpendicular to the magnetic induction direction of the magnetic field. At this time, eddy currents are generated inside the magnetic conductor 31, and the eddy current field interacts with the magnetic field to generate a Lorentz force that can hinder the relative movement of the magnetizer and the magnetic field assembly. At the same time, due to the resistance inside the magnetic conductor 31, the kinetic energy of the eddy current is converted into heat energy, which is consumed through heat dissipation, thereby generating a damping effect to prevent the vibration of the torque arm 2.

[0045] In addition, a magnetized weak magnetic opening is provided on the outer shell 33 to adjust the magnetic force of the annular magnet 34; an acceleration sensor and a frequency collector are provided on the support seat 1 to form a data acquisition mechanism to collect the vibration frequency of the torque arm 2, and the acceleration sensor and the frequency collector are respectively connected to the main controller by wireless communication to monitor the vibration amplitude of the torque arm 2 in real time, and the magnetic induction intensity inside the magnetic field assembly is controlled by the monitoring data through the adjustment member 41 or the magnetized weak magnetic opening, thereby controlling the magnitude of the damping force.

[0046] The elastic support mechanism provided in the first aspect of the present invention has a simple structure. The cooperation between the magnetic conductor and the magnetic field assembly forms a vibration reduction mechanism that can utilize eddy currents to produce a damping effect. This can avoid the problem of rubber supports in traditional elastic supports being prone to aging and cracking, and can also avoid the problem of hydraulic dampers being unable to adapt to low temperature environments. In addition, it is easy to install, maintain and replace, and has low cost. It can also monitor its working conditions in real time by setting up a data acquisition mechanism, which is convenient for staff to maintain and replace in a timely manner.

[0047] In addition, the second aspect of the present invention also provides a wind turbine generator set, which includes the elastic support mechanism provided by the first aspect. The elastic support mechanism used by the wind turbine generator set has the advantages of strong adaptability, long service life and simple structure. By using the elastic support mechanism, the service life of the wind turbine generator set can be extended.

[0048] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "a specific implementation", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0051] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An elastic support mechanism, characterized in that: It comprises a support seat (1) and a vibration reduction mechanism arranged inside the support seat (1); The vibration reduction mechanism comprises a magnetic conductor (31) fixedly mounted on the torque arm (2) and a magnetic field component mounted on the support seat (1); a hollow structure (32) capable of forming a magnetic field is provided inside the magnetic field component; the magnetic conductor (31) is passed through the hollow structure (32), and a gap is formed between the outer peripheral surface of the magnetic conductor (31) and the inner wall of the hollow structure (32); The magnetic conductor (31) moves along the axial direction of the hollow structure (32) driven by the torque arm (2) to generate eddy currents, and the moving direction of the magnetic conductor (31) is perpendicular to the magnetic flux lines (6) formed in the internal magnetic field of the hollow structure (32).

2. The elastic support mechanism according to claim 1, characterized in that: The support seat (1) has an accommodating cavity formed inside thereof into which the torque arm (2) can be inserted. The axis of the torque arm (2) is perpendicular to the height direction of the support seat (1), and a gap is formed between the outer peripheral surface of the torque arm (2) and the inner wall of the accommodating cavity (11). The vibration damping mechanism is arranged between the upper surface of the accommodating cavity (11) and the torque arm (2) and between the lower surface of the accommodating cavity (11) and the torque arm (2).

3. The elastic support mechanism according to claim 2, characterized in that: The magnetic field assembly comprises an outer shell (33) and an annular magnet (34) arranged inside the outer shell (33); a plurality of the annular magnets (34) are arranged in sequence along the moving direction of the magnetic conductor (31) via magnetic shoes (35).

4. The elastic support mechanism according to claim 3, characterized in that: The outer shell (33) is provided with a magnetized weak magnetic opening so as to adjust the magnetic force of the annular magnet (34).

5. The elastic support mechanism according to claim 3, characterized in that: The magnetic field assembly is adjustably mounted on the support seat (1) via an adjusting member (41); the adjusting member (41) is an adjusting bolt; the adjusting bolt is adjustably arranged on the support seat (1), and one end of the adjusting bolt facing the torque arm (2) abuts against one end of the magnetic field assembly facing away from the torque arm (2).

6. The elastic support mechanism according to claim 3, characterized in that: The magnetic field assembly is movably mounted on the support seat (1) via a mounting assembly, the mounting assembly comprising a slide rail (42) arranged on the inner wall of the accommodating cavity (11) and a slider (43) arranged on the side wall of the outer shell (33) and matching the slide rail (42), and a limit block (44) capable of abutting against the slider (43) is formed at one end of the slide rail (42) close to the torque arm (2).

7. The elastic support mechanism according to any one of claims 1 to 6, characterized in that: It also comprises a secondary vibration reduction structure, the secondary vibration reduction structure comprising a second anti-collision layer (51) arranged at an end of the magnetic field component away from the torque arm (2) and a buffer member (52) arranged between the vibration reduction mechanism and the support seat (1).

8. The elastic support mechanism according to any one of claims 1 to 6, characterized in that: A third anti-collision layer (36) is formed at the end of the magnetic conductor (31) away from one end of the torque arm (2).

9. The elastic support mechanism according to any one of claims 1 to 6, characterized in that: It also comprises a data acquisition mechanism, which comprises an acceleration sensor and a frequency acquisition instrument, so as to be able to acquire the vibration frequency of the torque arm (2), and the acceleration sensor and the frequency acquisition instrument are respectively connected to the main controller by wireless communication.

10. A wind turbine generator set, characterized in that: It comprises the elastic supporting mechanism according to any one of claims 1 to 9.

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