Damping device and working method

Abstract

The invention discloses a damping device and a working method, and relates to the technical field of vibration control, the damping device comprises a top plate, a mass block, a connecting assembly, a driving mechanism, a magnet turnover mechanism, a first magnet and a second magnet; according to the damping device, the first magnet is driven by the driving mechanism and the magnet turnover mechanism to do linear motion or relative rotation relative to the second magnet, so that the rigidity of the damping device can be changed along with the magnitude of the magnetic attraction force or the magnetic repulsive force, and therefore the damping device is adapted to the working condition that the vortex vibration frequency changes within a certain range; the rigidity of the damping device can be adjusted within a large range by changing the magnetic attraction force and the magnetic repulsive force, and different working requirements can be met; the invention further discloses a working method of the damping device, the damping device is driven to change the rigidity according to the magnetic expression form, and operation is easy.

Description

Technical Field

[0001] The present application relates to the field of vibration control technology, and in particular to a damping device and a working method. Background Art

[0002] Vortex-Induced Vibration (VIV) of floating offshore wind turbine towers is an important research direction, especially in deep-sea environments, where the stability of wind turbine towers is crucial to the safety and economy of the overall structure. Vortex-Induced Vibration refers to the periodic vortices formed when fluids (such as wind and seawater) flow on the surface of the structure, which induces structural vibration. In the design of offshore wind turbine towers, the impact of VIV may cause structural fatigue, damage or even failure, so effective analysis and protection must be carried out.

[0003] In the prior art, the dampers for vortex-induced vibration of wind turbine towers mainly include: viscous dampers, friction dampers and mass dampers. The above dampers are basically passive tuned mass dampers or active tuned mass dampers. The existing problems are: 1. For floating wind turbines, the structural dynamic characteristics themselves are relatively complex, the tower has a variable cross-section, and the structural vortex vibration frequency changes within a certain range. The passive tuned mass damper vibration reduction performance is greatly reduced in this case; 2. The active tuned mass damper can overcome the defect of frequency imbalance, but it has high requirements on the control system and is less used in practice. Summary of the invention

[0004] The embodiments of the present application provide a damping device and a working method, which can adapt to the working condition where the vortex vibration frequency changes within a certain range.

[0005] In the first aspect, the present application provides a damping device, including a top plate, a mass block, a connecting assembly, a driving mechanism, a magnet flipping mechanism, a first magnet and a second magnet; the top plate and the mass block are arranged opposite to each other in a first direction, and the two ends of the connecting assembly are respectively connected to the top plate and the mass block; the driving mechanism is arranged on the top plate, the driving mechanism is connected to one end of the magnet conversion mechanism, and the driving mechanism can drive the magnet conversion mechanism to move in the first direction; the magnet flipping mechanism is connected to the first magnet, and the magnet flipping mechanism is used to drive the first magnet to rotate around the second direction; the second magnet is arranged on the mass block, and the projections of the first magnet and the second magnet in the first direction at least partially overlap; the first direction and the second direction intersect in the plane.

[0006] In a second aspect, the present application provides a working method of a damping device, including using the damping device, the working method is as follows: Step S100: determining the current magnetic force expression form between the first magnet and the second magnet, where the magnetic force expression form includes magnetic repulsion and magnetic attraction; Step S200: When there is magnetic repulsion between the first magnet and the second magnet: If the stiffness of the damping device needs to be increased, the driving mechanism drives the magnet flipping mechanism and the first magnet to move toward the second magnet, the magnetic repulsion between the first magnet and the second magnet gradually increases, and the stiffness of the damping device gradually increases accordingly; If the stiffness of the damping device needs to be reduced, the driving mechanism drives the magnet flipping mechanism and the first magnet to move away from the second magnet, the magnetic repulsion between the first magnet and the second magnet gradually decreases, and the stiffness of the damping device gradually decreases. When the first magnet reaches the predetermined position, if the stiffness of the damping device needs to be further reduced, step S300 is executed; When there is magnetic attraction between the first magnet and the second magnet: If the stiffness of the damping device needs to be increased, the driving mechanism drives the magnet flipping mechanism and the first magnet to move away from the second magnet, the magnetic attraction between the first magnet and the second magnet gradually decreases, and the stiffness of the damping device gradually increases. When the first magnet reaches the predetermined position, if the stiffness of the damping device needs to be further increased, step S300 is executed; If the stiffness of the damping device needs to be reduced, the driving mechanism drives the magnet flipping mechanism and the first magnet to move toward the second magnet, the magnetic attraction between the first magnet and the second magnet gradually increases, and the stiffness of the damping device gradually decreases accordingly; Step S300: The magnet flipping mechanism drives the first magnet to rotate around the second direction θ Angle, change the magnetic force between the first magnet and the second magnet, , then return to step S100.

[0007] The damping device and working method of the present application have at least the following beneficial effects: The damping device of the present application drives the first magnet to perform linear motion or relative rotation relative to the second magnet through a driving mechanism and a magnet flipping mechanism, so that the stiffness of the damping device can be changed with the magnitude of the magnetic attraction force or the magnetic repulsion force, thereby adapting to the working condition where the vortex vibration frequency changes within a certain range. In addition, the present application can adjust the stiffness of the damping device within a large range through the change of the magnetic attraction force and the magnetic repulsion force, which can adapt to different working requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 is a front view of the damping device of the present application; Figure 2 It is a structural schematic diagram of the damping device of the present application; Figure 3 yes Figure 1 AA schematic diagram in; Figure 4 yes Figure 1 A cross-sectional view of the middle magnet flipping mechanism and the first magnet; Figure 5 It is a structural schematic diagram of the connecting column in this application; Figure 6 yes Figure 5 BB schematic diagram in; Figure 7 is a schematic diagram of another mating pin power assembly in the present application (illustrating the first magnet); Figure 8 is a flow chart of the working method of the damping device of the present application; Description of the reference numerals is as follows: 100, top plate; 200, mass block; 300, connecting assembly; 310, connecting rope; 400, driving mechanism; 410, driving member; 420, first slider assembly; 421, first screw rod; 422, first slider; 423, first guide post; 430, second slider assembly; 431, second screw rod; 432, second slider; 433, second guide post; 440, transmission member; 500, magnet flip mechanism; 510, mounting member; 510a, sliding groove; 510b, guide channel; 520, matching pin power assembly; 521, first wedge block; 5211, guide plate; 5212, first wedge block body; 522, second wedge block; 523, slide cylinder; 5231, guide pin; 524, elastic member; 525, telescopic member; 530, matching pin; 540, connecting column; 540a, spiral segment; 540b, straight segment; 5401, tail end; 5402, head end; 600, a first magnet; 700. A second magnet. DETAILED DESCRIPTION

[0009] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, 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 intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0010] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0011] The present embodiment discloses a damping device and a working method. The damping device of the present embodiment can be used to maintain the stability of an offshore wind turbine tower, and the damping device of the present embodiment can also adjust the stiffness. Therefore, the damping device of the present embodiment can also be called a variable stiffness damping device. First, the damping device of the present embodiment is described.

[0012] like Figure 1 As shown, the damping device of this embodiment includes a top plate 100, a mass block 200, a connecting assembly 300, a driving mechanism 400, a magnet flipping mechanism 500, a first magnet 600 and a second magnet 700, as follows: like Figure 1 As shown, the top plate 100 is configured in a rectangular flat plate shape, and the top plate 100 is horizontally arranged on an external structure (such as a tower). The top plate 100 is used to provide installation positions for various components.

[0013] like Figure 1 As shown, the mass block 200 and the top plate 100 are arranged relative to each other in a first direction. In the present embodiment, the first direction is configured as a direction perpendicular to the surface of the top plate 100 (which can be understood as a height direction in the present embodiment). The mass block 200 is located directly below the top plate 100. The mass block 200 is a rectangular block with a certain weight. The specific weight and size are selected according to actual conditions.

[0014] like Figure 1As shown, the two ends of the connection assembly 300 are respectively connected to the mass block 200 and the top plate 100, and the connection assembly 300 can realize that the mass block 200 is suspended below the top plate 100. In this embodiment, the connection assembly 300 includes at least one connection rope 310, and the connection rope 310 can be a steel wire rope, a nylon rope, etc. The two ends of the connection rope 310 are respectively connected to the mass block 200 and the top plate 100, and the mass block 200 is suspended below the top plate 100 through the connection rope 310. In some preferred embodiments, there are multiple connection ropes 310, and the multiple connection ropes 310 are arranged around the first direction between the mass block 200 and the top plate 100. In this embodiment, there are four connection ropes 310, and one end of the four connection ropes 310 is connected to the four corner positions of the mass block 200 respectively.

[0015] like Figure 2 As shown, the driving mechanism 400 includes a driving member 410 and a first slider assembly 420. The driving member 410 is arranged on the top plate 100. The output end of the driving member 410 is connected to the first slider assembly 420, and can drive the first slider assembly 420 to move in the first direction; the first slider assembly 420 is connected to the magnet flipping mechanism 500. The driving member 410 can be a linear element such as a motor or an electric push rod. When the driving member 410 is a motor, the first slider assembly 420 is a screw mechanism, and the first slider assembly 420 is driven by the motor to move in the first direction. When the driving member 410 is an electric push rod, the telescopic end of the electric push rod is connected to the first slider assembly 420, thereby driving the first slider assembly 420 to move in the first direction. It should be noted that the driving member 410 drives the first slider assembly 420 to make a linear motion in the first direction, and the specific structural form can also refer to the existing technology.

[0016] In this embodiment, the driving member 410 drives the first slider assembly 420 to move in the first direction, thereby driving the magnet flipping mechanism 500 and the first magnet 600 to move closer to or away from the second magnet 700 in the first direction, thereby changing the stiffness of the damping device.

[0017] like Figure 2 and Figure 3As shown, in this embodiment, preferably, the first slider assembly 420 includes a first screw rod 421, a first slider 422 and a first guide column 423; the first screw rod 421 is rotatably arranged on the top plate 100, the output end of the driving member 410 (such as a motor) is connected to the end of the first screw rod 421, the first slider 422 is threadedly connected to the first screw rod 421, the first guide column 423 passes through the first slider 422 along the first direction, the axial direction of the first guide column 423 is parallel to the axial direction of the first screw rod 421, and the first guide column 423 is used to guide the first slider 422 in the first direction. When the driving member 410 drives the first screw rod 421 to rotate, the first slider 422 moves along the first direction (that is, the axial direction of the first screw rod 421). Among them, the first slider 422 is connected to the magnet flipping mechanism 500, and the magnet flipping mechanism 500 and the first magnet 600 can follow the first slider 422 to move in the first direction.

[0018] In this embodiment, the magnet flipping mechanism 500 and the first magnet 600 are driven to move by a screw mechanism, which has a fast response speed, good movement accuracy and stability, and has a certain self-locking performance, which can ensure the stability of the structure.

[0019] like Figure 2 and Figure 3 As shown, in this embodiment, preferably, the driving mechanism 400 also includes a second slider assembly 430, and the first slider assembly 420 is arranged in parallel with the second slider assembly 430; the second slider assembly 430 includes a second screw rod 431, a second slider 432 and a second guide column 433; the second screw rod 431 is rotatably arranged on the top plate 100, and the second screw rod 431 is arranged in parallel with the axial direction of the first screw rod 421; the first screw rod 421 and the second screw rod 431 are connected by a transmission member 440 (such as a transmission belt, a transmission chain, etc.), so that the first screw rod 421 and the second screw rod 431 can be connected. The second screw rod 431 rotates synchronously; the second slider 432 is threadedly connected to the second screw rod 431, and the first magnet 600 is rotatably connected to the second slider 432, so that the first magnet 600 can rotate relative to the second slider 432 around the second direction. Specifically, the outer circumference of the first magnet 600 is rotatably connected to the second slider 432 through a pin; the second guide column 433 passes through the second slider 432 along the first direction, and the axial direction of the second guide column 433 is parallel to the axial direction of the second screw rod 431. The second guide column 433 is used to guide the second slider 432 in the first direction. When the second screw rod 431 rotates, the second slider 432 can drive the first magnet 600 to move in the first direction.

[0020] In this embodiment, a screw mechanism is provided on both sides of the first magnet 600, which can ensure the stability of the structure and the accuracy of movement on the one hand, and use a driving member 410 (motor) to synchronously drive two screws on the other hand, which can save costs and reduce the problem of motion jamming. In other embodiments, the second screw 431 of the second slider assembly 430 is replaced with a smooth guide post, and the transmission member 440 between the first screw 421 and the second screw 431 is eliminated. Although such a structural form can also play a certain guiding role for the first magnet 600, due to the large gravity and magnetic force of the mass block 200, if the guide post is used directly, the structure will jam if the overall tilt amplitude is large.

[0021] like Figure 3 As shown, the magnet flipping mechanism 500 is connected to the first slider 422 and the first magnet 600 respectively, and the magnet flipping mechanism 500 can drive the first magnet 600 to flip around the second direction. In this embodiment, the first direction and the second direction intersect vertically in the plane, specifically in the vertical plane. There are many structural forms of the magnet flipping mechanism 500, which can be the structure described in this embodiment or other structures. For example, the magnet flipping mechanism 500 includes a rotating cylinder, a motor, etc., and the first magnet 600 is driven to rotate around the second direction through the output end of the rotating cylinder or the motor. The following is the preferred structure of the magnet flipping mechanism 500 in this embodiment, which is as follows: like Figure 4 As shown, the magnet flipping mechanism 500 includes a mounting member 510, a matching pin power assembly 520, a matching pin 530 and a connecting column 540; one end of the mounting member 510 is connected to the first slider 422. In the present embodiment, the mounting member 510 is shaped as a hollow rectangular cylindrical structure, and the mounting member 510 can be used as a mounting base for other components; the matching pin power assembly 520 is disposed on the mounting member 510, and the matching pin power assembly 520 is connected to the matching pin 530, and can drive the matching pin 530 to perform linear motion in the second direction; the connecting column 540 is rotatably connected to the mounting member 510, and the connecting column 540 can only undergo relative rotation with the mounting member 510, and cannot undergo relative displacement motion. In this embodiment, the axial configuration of the connecting column 540 is the second direction. The axial end of the connecting column 540 that is away from the mounting member 510 is connected to the first magnet 600. A motion groove is provided on the outer circumference of the connecting column 540. At least part of the matching pin 530 is inserted into the motion groove. The linear motion of the matching pin 530 in the second direction drives the connecting column 540 to rotate, thereby driving the first magnet 600 to rotate.

[0022] like Figure 5 and Figure 6As shown, the specific structure of the motion groove on the connecting column 540 is: the motion groove includes a connected spiral segment 540a and a straight segment 540b, the spiral segment 540a is spirally arranged on the outer peripheral surface of the connecting column 540 along the axial direction of the connecting column 540, and the straight segment 540b is connected to the spiral segment 540a, and the length direction of the straight segment 540b is configured as the axial direction of the connecting column 540. When the matching pin 530 moves along the second direction toward the first magnet 600 driven by the matching pin power assembly 520, the matching pin 530 cooperates with the spiral segment 540a of the motion groove and the matching pin 530 pushes the inner side wall of the spiral segment 540a, so that the connecting column 540 moves around the second direction. Rotation, thereby causing the first magnet 600 to flip along, and when the mating pin 530 moves away from the first magnet 600 along the second direction driven by the mating pin power assembly 520, the mating pin 530 slides and cooperates with the straight section 540b of the moving groove. At this time, since the movement direction of the mating pin 530 is consistent with the length direction of the straight section 540b, when the mating pin 530 moves away from the first magnet 600, the connecting column 540 will not rotate. In other words, the straight section 540b is set to enable the mating pin 530 to return to the starting position at the left end, and in this process the connecting column 540 will not rotate, thereby allowing the first magnet 600 to maintain its posture after flipping.

[0023] like Figure 5 and Figure 6 As shown, in some preferred embodiments, the motion groove includes at least two spiral segments 540a, and a straight segment 540b is connected between two adjacent spiral segments 540a, and the radial depths of the two spiral segments 540a and the straight segment 540b are different. First, it is necessary to explain the concept of radial depth. The radial depth refers to the depth of the depression of the motion groove on the connecting column 540, and the direction of the depression is the radial direction of the connecting column 540, that is, the direction perpendicular to the second direction. Secondly, the straight segment 540b is configured as a head end 5402 and a tail end 5401 at both ends of the axial direction of the connecting column 540; along the second direction, the end of the straight segment 540b away from the first magnet 600 is the head end 5402, and the tail end 5401 is the end close to the first magnet 600, and the radial depth of the straight segment 540b gradually becomes shallower from the tail end 5401 to the head end 5402, that is, the radial depth of the straight segment 540b gradually becomes smaller along the direction away from the first magnet 600; the head end 5402 and the tail end 5401 of the straight segment 540b are respectively connected to the two spiral segments 540a, wherein the tail end 5401 is connected to one spiral segment 540a, and the radial depth of the tail end 5401 (such as Figure 6 The radial depth of the spiral segment 540a connected thereto is greater than the radial depth of the spiral segment 540a connected thereto, the head end 5402 is connected to another spiral segment 540a, and the radial depth of the head end 5402 (as shown in D1 in FIG. Figure 6The radial depth of the helical section 540a connected thereto is smaller than that of the helical section 540a connected thereto. It should be noted that the mating pin 530 can be extended and retracted in its length direction, so that the mating pin 530 can be adaptively extended and retracted under different radial depths of the helical section 540a and the straight section 540b of the motion groove, thereby avoiding the jamming between the mating pin 530 and the connecting column 540. In the present embodiment, the mating pin 530 is configured as an elastic retractable pin, or a spring is provided between the mating pin 530 and the mating pin power assembly 520, so that the mating pin 530 can have an elastic retractable function.

[0024] In this embodiment, the spiral segment 540a has two sections. When the first magnet 600 needs to be flipped, the matching pin 530 enters into a spiral segment 540a from the head end 5402 of the straight segment 540b. Driven by the matching pin power assembly 520, the matching pin 530 pushes the connecting column 540 and the first magnet 600 to rotate. Since the radial depth of the head end 5402 of the straight segment 540b is less than the radial depth of the spiral segment 540a connected thereto, that is, the depth of the head end 5402 is shallow, the matching pin 530 falls from a high groove bottom surface to a low groove bottom surface, and the movement of the matching pin 530 will not be hindered. When a enters the tail end 5401 of the straight segment 540b, the first magnet 600 just flips one hundred and eighty degrees, and because the radial depth of the tail end 5401 is greater than the radial depth of the spiral segment 540a, the matching pin 530 is at a low groove bottom surface (i.e., the groove bottom surface at the tail end of the straight segment) at this time, and the matching pin 530 cannot retreat from this low groove bottom surface into the spiral segment 540a, thereby preventing the first magnet 600 from flipping back again after it has been flipped. That is, the step formed by the depth change of the tail end 5401 can limit the reversal of the first magnet 600, and at the same time, the depth change of the head end 5402 makes it easier for the matching pin 530 to fall into the spiral segment 540a again without obstacles.

[0025] The matching pin power assembly 520 is used to drive the matching pin 530 to move in the second direction. The matching pin power assembly 520 can have various structural forms. Two structural forms of the matching pin power assembly 520 are listed below: The first one, such as Figure 4As shown in the figure, the mating pin power assembly 520 includes a first wedge block 521, a second wedge block 522, a slide cylinder 523 and an elastic member 524. The first wedge block 521 is fixedly arranged on the lower side of the top plate 100, and the first wedge block 521 extends downward along the first direction; the second wedge block 522 is slidably arranged in the mounting member 510, and the sliding direction of the second wedge block 522 is configured as the second direction, and the first wedge block 521 and the second wedge block 522 can be wedge-shaped and slidably matched. When the first wedge block When the second wedge block 521 contacts and slides relative to the wedge, the second wedge block 522 can slide relative to the mounting member 510 in the second direction; the slide cylinder 523 is slidably arranged in the mounting member 510 along the second direction, one end of the slide cylinder 523 is connected to the second wedge block 522 (the slide cylinder 523 and the second wedge block 522 can be fixedly connected or formed together), the other end of the slide cylinder 523 is coaxially sleeved on the outer periphery of the connecting column 540, and one end of the matching pin 530 is fixedly arranged on the slide cylinder 52 3, the other end of the matching pin 530 is inserted into the motion groove of the connecting column 540. It should be noted that in order to ensure that the slide cylinder 523 of this embodiment can only move in the second direction relative to the mounting member 510, a guide pin 5231 is provided on the outer circumference of the slide cylinder 523 of this embodiment, and a sliding groove 510a is provided on the mounting member 510. The length direction of the sliding groove 510a is configured as the second direction, and the guide pin 5231 passes through the sliding groove 510a; the elastic member 524 is provided on the mounting member In the component 510, one end of the elastic component 524 is connected to the connecting column 540, and the other end is connected to the second wedge block 522 or the slide cylinder 523, and the extension direction of the elastic component 524 is configured as the second direction. It should be noted that, in this embodiment, the two ends of the elastic component 524 are respectively abutted against the second wedge block 522 and the axial end surface of the connecting column 540. When the connecting column 540 rotates, the elastic component 524 and the connecting column 540 rotate relative to each other, that is, the elastic component 524 does not rotate with the connecting column 540. In some preferred embodiments, the elastic member 524 is configured as a spring, which is coaxially arranged in the slide 523, and the expansion and contraction direction of the spring is configured as the second direction. When the second wedge block 522 slides toward the first magnet 600 in the second direction, the slide 523 and the matching pin 530 are pushed by the second wedge block 522 and move along the second direction, and the elastic member 524 is compressed at the same time. When the second wedge block 522 slides away from the first magnet 600 in the second direction, the elastic force of the elastic member 524 makes the second wedge block 522 have a tendency to move away from the first magnet 600. Therefore, when the second wedge block 522 moves away from the first magnet 600 along the wedge surface of the first wedge block 521, the slide 523 and the matching pin 530 follow the second wedge block 522 to return to the left position.

[0026] In the first case, it is preferred that Figure 4As shown, the first wedge block 521 includes a first wedge block body 5212 and a guide plate 5211 which are connected up and down or formed in one piece; the first wedge block body 5212 is arranged on the lower side of the top plate 100, and the first wedge block body 5212 can be wedge-matched with the second wedge block 522, and the guide plate 5211 is connected to the lower end of the first wedge block body 5212; the mounting member 510 is provided with a guide channel 510b along the first direction; the first wedge block body 5212 and the guide plate 5211 can pass through the guide channel 510b along the first direction. When the guide plate 5211 is inserted into the guide channel 510b, the second wedge block 522 will not slide in the second direction, and when the mounting member 510 moves upward or downward, and the first wedge block body 5212 contacts and slides relatively with the second wedge block 522, the second wedge block 522 can slide in the second direction relative to the mounting member 510 under the guidance of the first wedge block body 5212. In this embodiment, the first wedge block 521 adopts a segmented structure, and when the guide plate 5211 is inserted into the guide channel 510b, the mounting member 510 can move up and down within the length of the guide plate 5211 without realizing the flipping of the first magnet 600, and can adjust the distance between the first magnet 600 and the second magnet 700, thereby adjusting the magnetic force, and the first wedge block body 5212 is used to cooperate with the driving member 410 to drive the second wedge block 522 to move in the second direction, thereby driving the first magnet 600 to flip.

[0027] The second type, such as Figure 7 As shown: the matching pin power assembly 520 includes a telescopic member 525, the telescopic member 525 is arranged on the mounting member 510, the telescopic end of the telescopic member 525 is connected to the matching pin 530, the telescopic direction of the telescopic member 525 is configured as the second direction, and the matching pin 530 is driven to move in the second direction by the telescopic member 525. In other words, the matching pin power assembly 520 can directly adopt the structural form of the telescopic member 525, and the matching pin 530 is directly driven to move by the telescopic member 525. The telescopic member 525 can be an electric push rod, a linear mold assembly, etc.

[0028] In some preferred embodiments, the mating pin power assembly 520 adopts the first structural form mentioned above, which does not require additional power components and can reduce the requirements for system control.

[0029] The first magnet 600 may be a magnet, and the shape of the first magnet 600 is configured as a ring. In the initial position, the axial direction of the first magnet 600 is configured as a first direction (ie, a height direction). One end of the connecting column 540 is fixedly connected to the outer peripheral surface of the first magnet 600.

[0030] The second magnet 700 can be a magnet, and the second magnet 700 is also configured in a circular ring shape. The second magnet 700 is fixedly arranged on the upper surface of the mass block 200, and the projections of the first magnet 600 and the second magnet 700 in the first direction at least partially overlap, so that the two can generate magnetic force. In this embodiment, it is preferred that the first magnet 600 and the second magnet 700 are coaxially arranged. It should be noted that: in other embodiments, the design of the second magnet 700 can also be cancelled, and then the mass block 200 is designed as a metal material. In this case, the first magnet 600 can directly generate magnetic attraction with the mass block 200. Although this method can adjust the stiffness within a certain range, the stiffness adjustment range of this method is much smaller than the preferred method in this embodiment, that is, the corresponding matching method of the first magnet 600 and the second magnet 700.

[0031] like Figure 8 As shown, this embodiment also discloses a working method of a damping device, wherein the top plate 100 of the damping device is installed on an external structure that needs to be kept stable (such as a tower), and the working method is as follows: Step S100: Determine the current magnetic force expression form between the first magnet 600 and the second magnet 700. The magnetic force expression forms include magnetic repulsion and magnetic attraction. That is, it is necessary to determine whether there is magnetic attraction or magnetic repulsion between the first magnet 600 and the second magnet 700. Different working modes are selected in step S200 according to different magnetic force expression forms.

[0032] Step S200: According to different magnetic force manifestations, different working modes are selected to adjust the stiffness of the damping device. In this embodiment, the stiffness of the damping device can be understood as the vertical force of the deadweight of the mass block 200 and the second magnet 700 and the magnetic force (magnetic repulsion or magnetic attraction, the direction of the magnetic repulsion is downward, and the direction of the magnetic attraction is upward), which specifically includes the following two cases: (1) When there is magnetic repulsion between the first magnet 600 and the second magnet 700: If the stiffness of the damping device needs to be increased, the driving mechanism 400 drives the magnet flipping mechanism 500 and the first magnet 600 to move along the first direction toward the second magnet 700, and the magnetic repulsion between the first magnet 600 and the second magnet 700 gradually becomes stronger, and the stiffness of the damping device gradually increases accordingly. Specifically, the driving member 410 drives the first screw rod 421 and the second screw rod 431 to rotate forward, and the first slider 422 drives the mounting member 510, the matching pin power assembly 520 and the first magnet 600 to gradually approach the second magnet 700 downward. Since there is a magnetic repulsion between the first magnet 600 and the second magnet 700 at this time, as the first magnet 600 and the second magnet 700 gradually approach each other, the magnetic repulsion between the first magnet 600 and the second magnet 700 gradually becomes stronger, and the connecting rope 310 of the connecting assembly 300 is tightened. At this time, the direction of gravity is downward, and the direction of the magnetic repulsion is also downward. Therefore, the greater the magnetic repulsion, the greater the stiffness. If the stiffness of the damping device needs to be reduced, the driving mechanism 400 drives the magnet flipping mechanism 500 and the first magnet 600 to move away from the second magnet 700 in the first direction, and the magnetic repulsion between the first magnet 600 and the second magnet 700 gradually decreases, and the stiffness of the damping device gradually decreases accordingly; it should be noted that in the presence of magnetic repulsion, when the first magnet 600 moves upward away from the second magnet 700 to a predetermined position, if the stiffness of the damping device needs to be further reduced, step S300 needs to be executed (i.e., the first magnet 600 is flipped to change the magnetic force expression form); The predetermined position refers to a predetermined height position (such as Figure 1 As shown by the label H in the figure), this height position can be selected as needed. In the present embodiment, the predetermined position specifically refers to the connection position between the first wedge block body 5212 and the guide plate 5211. Therefore, the height position refers to the height position of the connection position between the first wedge block body 5212 and the guide plate 5211.

[0033] (2) When there is magnetic attraction between the first magnet 600 and the second magnet 700: If the stiffness of the damping device needs to be increased, the driving mechanism 400 drives the magnet flipping mechanism 500 and the first magnet 600 to move away from the second magnet 700, and the magnetic attraction between the first magnet 600 and the second magnet 700 gradually decreases, and the stiffness of the damping device gradually increases. Specifically, the driving member 410 drives the first screw rod 421 and the second screw rod 431 to reverse, and the first slider 422 drives the mounting member 510, the matching pin power assembly 520 and the first magnet 600 to gradually move upward away from the second magnet 700. At this time, the first magnet 600 and the second magnet There is a magnetic attraction between the first magnet 600 and the second magnet 700. As the first magnet 600 and the second magnet 700 gradually move away from each other, the magnetic attraction gradually weakens, and the stiffness of the damping device gradually increases. At this time, the gravity is downward and the magnetic attraction is upward. Therefore, the smaller the magnetic attraction, the greater the stiffness (relatively increased). It should be noted that in the presence of magnetic attraction, when the first magnet 600 moves away from the second magnet 700 and moves upward to a predetermined position, if the stiffness of the damping device needs to be further reduced, step S300 needs to be executed (i.e., the first magnet 600 is flipped to change the magnetic force expression form). If the stiffness of the damping device needs to be reduced, the driving mechanism 400 drives the magnet flipping mechanism 500 and the first magnet 600 to move toward the second magnet 700, and the magnetic attraction between the first magnet 600 and the second magnet 700 gradually increases, and the stiffness of the damping device gradually decreases. Specifically, the driving member 410 drives the first screw rod 421 and the second screw rod 431 to rotate forward, and the first slider 422 drives the mounting member 510, the matching pin power assembly 520 and the first magnet 600 to gradually approach the second magnet 700 downward, and the At this time, there is a magnetic attraction between the first magnet 600 and the second magnet 700. As the first magnet 600 and the second magnet 700 gradually approach each other, the magnetic attraction gradually increases, and the rigidity decreases accordingly. At this time, the gravity is downward, and the magnetic attraction is upward, so the greater the magnetic attraction, the smaller the rigidity. In this embodiment, the distance between the first magnet 600 and the second magnet 700 in the height direction cannot be less than the set distance, and the set distance needs to satisfy that the first magnet 600 and the second magnet 700 will not be attracted to each other in the presence of magnetic attraction. Step S300: changing the magnetic force between the first magnet 600 and the second magnet 700, and then returning to step S100, specifically: driving the first magnet 600 to rotate around the second direction through the magnet flip mechanism 500 θ Angle, thereby changing the magnetic force between the first magnet 600 and the second magnet 700, and then returning to step S100; in, θThe value of is selected according to the initial posture of the first magnet 600. In this embodiment, the first magnet 600 can just change from magnetic repulsion to magnetic attraction, or from magnetic attraction to magnetic repulsion after rotating 180 degrees. Therefore, in this embodiment, it is preferred θ It should be noted that the magnetic force between the first magnet 600 and the second magnet 700 will increase with the θ changes with the changes in The conversion process of the magnetic force expression form in step S300 of this embodiment is specifically as follows: the driving member 410 drives the first screw rod 421 and the second screw rod 431 to reverse, the first slider 422 drives the mounting member 510, the matching pin power assembly 520 and the first magnet 600 to continue to move upward and gradually away from the second magnet 700, and the first wedge block body 5212 and the second wedge block 522 begin to slide in contact. Since the second wedge block 522 can only move in the second direction, during the rising process of the mounting member 510, the second wedge block 522 is guided by the inclined surface (that is, the wedge surface) of the first wedge block body 5212 and moves in the second direction. The second wedge block 522 compresses the elastic member 524 during the movement, and at the same time, the second wedge block 522 drives the slide cylinder 523 and the matching pin 530 during the movement. 0 moves toward the first magnet 600 in the second direction. At this time, the matching pin 530 enters the spiral segment 540a from the straight segment 540b of the moving groove of the connecting column 540, and pushes the connecting column 540 to rotate, so that the first magnet 600 connected to the connecting column 540 rotates, wherein the length of the spiral segment 540a determines the maximum rotation angle of the first magnet 600. In this embodiment, the length of the spiral segment 540a can just make the first magnet 600 flip 180 degrees to achieve the change of magnetic poles, that is, when the matching pin 530 transitions from the spiral segment 540a to the tail end 5401 of the straight segment 540b, the first magnet 600 is flipped, and the original magnetic repulsion between the first magnet 600 and the second magnet 700 is transformed into magnetic attraction or from magnetic attraction to magnetic repulsion; It should be noted that after the original magnetic repulsion between the first magnet 600 and the second magnet 700 is transformed into magnetic attraction or the magnetic attraction is transformed into magnetic repulsion, even if the first slider 422, the mounting member 510 and the first magnet 600 move downward, the first magnet 600 will not rotate again, because during the descent, the matching pin 530 slides relative to the straight section 540b of the motion groove, and during the descent, the movement direction of the second wedge block 522 is away from the first magnet 600 (away from the first magnet 600 in the second direction), and the matching pin 530 will not enter the spiral section 540a from the straight section 540b, so the matching pin 530 will not push the connecting column 540 to rotate, and then the first magnet 600 will not rotate, and the elastic reset force of the elastic member 524 will make the second wedge block 522 have a tendency to move away from the first magnet 600 in the second direction during this process, and drive the second wedge block 522 to reset.

[0034] That is to say, the first magnet 600 will rotate only when the second wedge block 522 is in sliding contact with the first wedge block body 5212 and the first slider 422, the mounting member 510 and the first magnet 600 are moving upward.

[0035] The above only illustrates a conversion process of a magnetic force expression form. In addition, the first magnet 600 can also directly push the matching pin 530 to move along the second direction toward the first magnet 600 through the telescopic member 525, thereby realizing the flipping of the first magnet 600.

[0036] In some other embodiments, a sensor is required to be set on an external structure (such as a tower), and an accelerometer or a displacement meter can be placed. The acceleration of the object is identified through Donghua parameters, and the real-time frequency and displacement of the object are numerically analyzed through MATLAB. The stiffness of the damping device is adjusted according to the frequency of the external structure. For example, if the frequency of the external structure is high, the stiffness of the damping device is increased, otherwise it is reduced. For the specific method of adjusting the stiffness, please refer to the above description of this embodiment.

[0037] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A damping device, characterized in that: It includes a top plate, a mass block, a connecting assembly, a driving mechanism, a magnet flipping mechanism, a first magnet and a second magnet; The top plate and the mass block are arranged opposite to each other in a first direction, and two ends of the connecting assembly are respectively connected to the top plate and the mass block; The driving mechanism is arranged on the top plate, the driving mechanism is connected to one end of the magnet conversion mechanism, and the driving mechanism can drive the magnet conversion mechanism to move in the first direction; the magnet flipping mechanism is connected to the first magnet, and the magnet flipping mechanism is used to drive the first magnet to rotate around the second direction; the second magnet is arranged on the mass block, and the projections of the first magnet and the second magnet in the first direction at least partially overlap; the first direction and the second direction intersect in a plane.

2. The damping device according to claim 1, characterized in that: The connection assembly includes at least one connection rope, and two ends of the connection rope are respectively connected to the top plate and the mass block, so that the mass block is suspended below the top plate.

3. The damping device according to claim 1, characterized in that: The driving mechanism includes a driving member and a first slider assembly. The driving member is arranged on the top plate and connected to the first slider assembly to drive the first slider assembly to move in a first direction. The first slider assembly is connected to the magnet flipping mechanism.

4. The damping device according to claim 3, characterized in that: The first slider assembly includes a first screw rod, a first slider and a first guide column; the first screw rod is rotatably arranged on the top plate; the first slider is threadedly connected to the first screw rod, and the first slider is connected to the magnet flipping mechanism; the first guide column passes through the first slider along the first direction, and is used to guide the first slider in the first direction.

5. The damping device according to claim 4, characterized in that: The driving mechanism further includes a second slider assembly; the second slider assembly includes a second screw rod, a second slider and a second guide column, the second screw rod is rotatably arranged on the top plate, and the second screw rod is arranged parallel to the first screw rod; the driving member is connected to the second screw rod through a transmission member; The second slider is threadedly connected to the second screw rod; The first magnet is rotatably connected to the second slider, so that the first magnet can rotate relative to the second slider around the second direction; the second guide post passes through the second slider along the first direction, and is used to guide the second slider in the first direction.

6. The damping device according to any one of claims 1 to 5, characterized in that: The magnet flipping mechanism includes a mounting piece, a matching pin power assembly, a matching pin and a connecting column; one end of the mounting piece is connected to the driving mechanism; the matching pin power assembly is arranged on the mounting piece, and is used to drive the matching pin to move in the second direction; the connecting column is rotatably connected to the mounting piece, and the axial direction of the connecting column is configured as the second direction; one axial end of the connecting column is connected to the first magnet; a motion groove is arranged on the outer circumference of the connecting column, and at least part of the matching pin is arranged in the motion groove; the motion groove includes a connected spiral segment and a straight segment, the spiral segment is spirally arranged along the axial direction of the connecting column, and the straight segment is arranged along the axial direction of the connecting column; Wherein, the first direction and the second direction intersect perpendicularly in a vertical plane.

7. The damping device according to claim 6, characterized in that: The motion groove includes at least two spiral segments, and the straight segment is connected between the two spiral segments. The straight segment is respectively configured as a tail end and a head end at the axial ends of the connecting column, and the tail end is configured as an end close to the first magnet; the radial depth of the straight segment gradually becomes shallower from the tail end to the head end, the radial depth of the tail end is greater than the radial depth of a spiral segment connected to it, and the radial depth of the head end is less than the radial depth of another spiral segment connected to it; the matching pin is configured as an elastic telescopic pin.

8. The damping device according to claim 6, characterized in that: The mating pin power assembly includes a first wedge block, a second wedge block, a slide cylinder and an elastic member; the first wedge block is arranged on the top plate, and the second wedge block and the slide cylinder are both slidably arranged on the mounting member along the second direction, and the first wedge block can be wedge-matched with the second wedge block, and when the second wedge block contacts and slides relatively with the first wedge block, the second wedge block can move in the second direction; one end of the slide cylinder is connected to the second wedge block, and the other end of the slide cylinder is coaxially sleeved on the connecting column; one end of the mating pin is arranged on the inner circumference of the slide cylinder; one end of the elastic member is connected to the connecting column, and the other end is connected to the second wedge block or the slide cylinder, and the telescopic direction of the elastic member is configured as the second direction; when the second wedge block contacts and slides relatively with the first wedge block, the mating pin can move in the second direction.

9. The damping device according to claim 6, characterized in that: The matching pin power assembly includes a telescopic member, which is arranged on the mounting member. The telescopic end of the telescopic member is connected to the matching pin, and the matching pin is driven to move in the second direction by the telescopic member.

10. A working method of a damping device, comprising using the damping device according to any one of claims 1 to 9, the working method being as follows: Step S100: determining the current magnetic force expression form between the first magnet and the second magnet, where the magnetic force expression form includes magnetic repulsion and magnetic attraction; Step S200: When there is magnetic repulsion between the first magnet and the second magnet: If the stiffness of the damping device needs to be increased, the driving mechanism drives the magnet flipping mechanism and the first magnet to move toward the second magnet, the magnetic repulsion between the first magnet and the second magnet gradually increases, and the stiffness of the damping device gradually increases accordingly; If the stiffness of the damping device needs to be reduced, the driving mechanism drives the magnet flipping mechanism and the first magnet to move away from the second magnet, the magnetic repulsion between the first magnet and the second magnet gradually decreases, and the stiffness of the damping device gradually decreases. When the first magnet reaches the predetermined position, if the stiffness of the damping device needs to be further reduced, step S300 is executed; When there is magnetic attraction between the first magnet and the second magnet: If the stiffness of the damping device needs to be increased, the driving mechanism drives the magnet flipping mechanism and the first magnet to move away from the second magnet, the magnetic attraction between the first magnet and the second magnet gradually decreases, and the stiffness of the damping device gradually increases. When the first magnet reaches the predetermined position, if the stiffness of the damping device needs to be further increased, step S300 is executed; If the stiffness of the damping device needs to be reduced, the driving mechanism drives the magnet flipping mechanism and the first magnet to move toward the second magnet, the magnetic attraction between the first magnet and the second magnet gradually increases, and the stiffness of the damping device gradually decreases accordingly; Step S300: The magnet flipping mechanism drives the first magnet to rotate around the second direction θ Angle, change the magnetic force between the first magnet and the second magnet, , then returns to step S100.

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