A two-dimensional non-linear energy well device and a method of use

Abstract

The present invention relates to a two-dimensional non-linear energy well device and a method of use, belonging to the technical field of vibration reduction and energy dissipation devices, and solves the problem of poor vibration reduction effect of high-rise building structures. A two-dimensional non-linear energy well device is characterized in that it includes an outer frame, a friction disc, an elastic friction assembly and a support; the friction disc is fixedly arranged in parallel within the outer frame, there is an opening in the middle of the friction disc, and both ends of the elastic friction assembly pass through the opening and are respectively hinged to the top and bottom of the outer frame through the support; there is a sliding friction between the friction assembly and the friction disc. The present invention achieves a more effective vibration reduction effect of the non-linear energy well.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping and energy dissipation devices, and in particular to a two-dimensional non-linear energy sink device and a usage method thereof. Background Art

[0002] In solving vibration control problems, existing structures usually adopt tuned mass damper devices. Such structures can resonate with the main structure in a specific frequency band and achieve good vibration damping effects. However, the vibration damping frequency band is relatively narrow, and it is difficult to apply to the multi-frequency forced vibration of the main structure.

[0003] In addition, most of the existing non-linear energy sink structures rely on the non-linear restoring forces provided by combinations of springs, magnets, etc. only in a single orbital direction, resulting in poor energy absorption effects and poor anti-vibration effects. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a two-dimensional non-linear energy sink device and a usage method thereof to solve the problem of poor vibration damping effect of existing non-linear energy sink devices.

[0005] The object of the present invention is mainly achieved through the following technical solutions:

[0006] A two-dimensional non-linear energy sink device includes an outer frame, a friction disc, an elastic friction assembly, and a support. The friction disc is fixedly connected to the outer frame. There is an opening in the middle of the friction disc. Both ends of the elastic friction assembly pass through the opening and are respectively hinged to the top and bottom of the outer frame through the support. The elastic friction assembly is in sliding friction connection with the friction disc.

[0007] Further, the elastic friction assembly includes: a friction ring, an oscillator, a first elastic unit, and a second elastic unit. The first elastic unit and the second elastic unit are connected to each other through a connecting shaft. The oscillator is sleeved on the connecting shaft. The friction ring is fixedly connected to the oscillator through a connecting frame.

[0008] Further, the first elastic unit and the second elastic unit have the same structure. The first elastic unit includes a spring, a first spring seat, and a second spring seat.

[0009] Further, both the first spring seat and the second spring seat include a polygonal sleeve.

[0010] Further, the connecting frame includes four support arms, and all four support arms are arranged downward.

[0011] Further, the diameter of the friction ring is larger than the diameter of the friction disc, and the two are in sliding friction connection.

[0012] Further, the oscillator includes a mass block and a long bolt; the mass block is fixed to the connecting frame by the long bolt.

[0013] Further, the support includes a first support and a second support; the first support and the second support are respectively connected to the top end and the bottom end of the outer frame.

[0014] Further, the structures of the first support and the second support are the same. The first support includes a nut, a support rod, an outer bearing ring, and an inner bearing ring.

[0015] Further, a method for using a two-dimensional non-linear energy sink device is as follows:

[0016] Assemble the outer frame, the friction disc, the elastic friction assembly, and the support, and carry out vibration energy consumption.

[0017] Increase or decrease the mass of the oscillator, adjust the mass parameter, so that the mass parameter of the non-linear energy sink oscillator matches the mass of the connected main building structure; thereby enabling the oscillator to be in a steady state position.

[0018] When the main structure vibrates, the outer frame moves synchronously with the main structure; due to its own inertia, the displacement of the oscillator does not change at the original position.

[0019] The first elastic unit and the second elastic unit pull the oscillator and move along the axial vibration direction; the oscillator performs reciprocating motion under the central non-linear restoring force provided by the two elastic units.

[0020] The motion of the oscillator drives the friction ring to slide relative to the friction disc through the connecting frame, causing sliding friction between the friction ring and the friction disc, and dissipating the vibration energy.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0022] (1) By installing the non-linear energy sink device on the main structure, according to the direction of the planar vibration of the main structure, rotating the elastic friction assembly in the non-linear energy sink, the present invention realizes the movement of the elastic friction assembly driving the oscillator in any direction on the two-dimensional plane, absorbs the energy onto the oscillator, and then dissipates the vibration energy through the friction between the oscillator driving the friction ring and the friction disc.

[0023] (2) In the present invention, the friction ring is arranged below the oscillator, so that during the process of the second elastic unit driving the friction ring to rotate and rub, the movement range of the friction ring is much smaller than that when the friction ring is arranged in a state parallel to the oscillator. The friction ring is arranged below the oscillator with a lower center of gravity, which improves the stability of the entire elastic friction assembly; moreover, the required opening diameter of the friction disc is greatly reduced, thereby reducing the diameter of the friction disc, and the diameter of the friction ring is also correspondingly reduced, greatly saving the cost of raw materials, and at the same time reducing the occupied space of the entire device.

[0024] (3) In the present invention, the vertical distance between the oscillator and the friction ring is set to be greater than 1 / 3 and less than 1 / 2 of the axial distance of the second elastic unit. The setting of the lower position of the friction disc makes the center of gravity of the entire device lower, which is beneficial to the stability of the entire device during operation on the main structure, and eliminates the embarrassing problem of uneven vertical force on the vertical oscillator caused by uneven gravity when the friction ring and the oscillator are arranged on the same horizontal plane. At the same time, the vertical distance between the oscillator and the friction ring is less than 1 / 2 of the axial distance of the second elastic unit, avoiding the situation that the friction ring tilts and disengages from the friction disc; making the contact area between the friction ring and the friction disc larger, improving the friction energy dissipation effect; in addition, the vertical distance between the oscillator and the friction ring is greater than 1 / 3 of the axial distance of the second elastic unit, making the center of gravity of the friction disc lower, improving the stability of the entire structure, and at the same time reducing the overall diameter of the friction ring and the friction disc, reducing the cost of the entire material and the floor area of the entire device.

[0025] (4) In the present invention, the inner sleeve and the outer sleeve are specifically set as polygonal sleeves, so that there is no relative rotation between the two sleeves (the first spring seat and the second spring seat), and only the spring generates contraction and elongation movements. The polygonal design of the inner and outer sleeves can make the two elastic units always in a vertical plane through the connection of the intermediate connecting shaft during the process of friction energy dissipation, that is, the movement of the entire elastic friction assembly is always in this vertical plane, making the two springs form a non-linear restoring force, and then through the bearing setting on the support, the vertical plane formed by the elastic friction assembly can rotate in any direction, thereby meeting the movement requirements of the oscillator in all directions in the plane and meeting the vibration reduction in all directions in the plane.

[0026] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent specification, and some advantages can be made obvious from the specification or understood by implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference signs represent the same components.

[0028] Figure 1 This is a schematic structural diagram of the two-dimensional non-linear energy well device of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the outer frame in the two-dimensional non-linear energy well device of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the first support in the two-dimensional non-linear energy well device of the present invention;

[0031] Figure 4 This is a schematic structural diagram of the support in the two-dimensional non-linear energy well device of the present invention;

[0032] Figure 5 This is a schematic structural diagram of the first elastic unit in the two-dimensional non-linear energy well device of the present invention.

[0033] Reference numerals:

[0034] 1 - Outer frame; 101 - Bracket; 102 - Top plate; 103 - Bottom plate; 104 - Angle steel;

[0035] 2 - Friction disc; 3 - Friction ring; 4 - Connecting frame; 5 - Oscillator; 51 - Mass block; 52 - Long bolt; 6 - Connecting shaft; 61 - Axis center; 62 - Bush;

[0036] 7 - First elastic unit; 71 - Spring; 72 - First spring seat; 721 - First hinge plate; 722 - First positioning plate; 723 - Polygonal inner sleeve; 73 - Second spring seat; 731 - Second hinge plate; 732 - Second positioning plate; 733 - Polygonal outer sleeve; 8 - Second elastic unit; 9 - First support; 91 - Nut; 92 - Support rod; 93 - Outer ring of bearing; 94 - Inner ring of bearing; 10 - Second support. Detailed implementation manners

[0037] The following further describes in detail a two-dimensional non-linear energy well device and a usage method in combination with specific embodiments. These embodiments are only for purposes of comparison and explanation, and the present invention is not limited to these embodiments.

[0038] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The terms "top", "bottom", "above", "under", and "on" used in the description throughout the text are relative positions with respect to the components of the device, such as the relative positions of the top and bottom substrates inside the device. It is understood that the devices are multifunctional and independent of their orientation in space.

[0040] The general working surface of the present invention can be planar or curved, can be inclined, or can be horizontal. For the convenience of description, the embodiments of the present invention are placed on a horizontal plane and used on the horizontal plane, and "higher and lower" and "upper and lower" are defined thereby.

[0041] The present invention uses a spring with non-linear stiffness as the vibration absorber stiffness element, obtaining a wider vibration damping frequency band. Subsequently, this vibration absorber with strong non-linearity and a structure that can unidirectionally transfer vibration energy from the main structure to the vibration absorber is named a non-linear energy sink.

[0042] The non-linear energy sink is a passive control technology for targeted energy transfer. It has strong non-linearity, so it has good robustness to vibration and is usually used for vibration absorption and damping of structures. The non-linear energy sink is installed on the main structure (such as a high-rise large building). When the main structure vibrates, it will undergo a series of instantaneous resonance captures of modes, thereby absorbing vibration in a relatively wide frequency band range.

[0043] A specific embodiment of the present invention discloses a two-dimensional non-linear energy sink device, including an outer frame 1, a friction disk 2, an elastic friction assembly, and a support; the friction disk 2 is fixedly arranged in parallel within the outer frame 1, and an opening is provided in the middle of the friction disk 2. Both ends of the elastic friction assembly pass through the opening and are respectively hinged to the top end and the bottom end of the outer frame 1 through the support. There is a sliding friction between the friction assembly and the friction disk 2.

[0044] During implementation, the two-dimensional non-linear energy sink device is fixed to the top floor of a high-rise large building. When the building is disturbed by vibration from the external environment, the outer frame 1 and the friction disk 2 will move synchronously with the high-rise large building, while the elastic friction assembly, due to its own inertia, remains in the same position as before vibration, thereby enabling a relative displacement between the friction disk 2 and the elastic friction assembly, and further dissipating energy through sliding friction.

[0045] Further, the outer frame 1 includes a bracket 101, a top plate 102, a bottom plate 103, and an angle steel 104. The bottom plate 103 is a cross-shaped vertical cross-frame, which is arranged parallel to the ground, and the ends in four directions of the cross-shaped vertical cross-frame are fixedly connected to the bracket 101. A second circular connecting portion is provided at the vertical intersection of the cross-shaped vertical cross-frame, and a second circular through-hole is provided at the center of the second circular connecting portion.

[0046] Further, there are four brackets 101 in total, which have the same structure and include a vertical part and a bent part. The vertical part is arranged perpendicular to the ground, and the bent part is fixedly arranged at a certain angle with the vertical part, and this angle is between 120° and 140°, so that the bent parts of the four brackets 101 can converge to a point to form a top plate 102. At the same time, more installation space can be provided for the elastic friction assembly, making the structure more stable. A first circular connecting part is provided on the top plate 102, and a first circular through hole is provided at the center of the first circular connecting part. The end of the vertical part far from the bent part is fixedly connected with an angle steel 104, and the angle steel 104 is used to be fixedly connected with the main structure through bolts. When the main structure shakes or vibrates, the outer frame 1 will move synchronously with the main structure.

[0047] Specifically, internal threads are provided on the inner walls of the first circular through hole and the second circular through hole.

[0048] Further, the support includes a first support 9 and a second support 10. The first support 9 is connected to the top plate 102, and the second support 10 is connected to the bottom plate 103.

[0049] Specifically, the first support 9 and the second support 10 have the same structure and both include a nut 91, a support rod 92, an outer bearing ring 93 and an inner bearing ring 94. External threads are provided on the outer wall of the support rod 92, which are screwed with the internal threads of the first circular through hole. Two nuts 91 are spirally arranged on the support rod 92. When the support rod 92 passes through the first circular through hole on the top plate 102, the two nuts 91 are respectively in contact with the upper surface and the lower surface of the first circular connecting part, so that the top plate 102 is clamped between the two nuts 91, thereby realizing the relative fixation of the first support 9 and the top plate 102. One end of the first support 9 is fixedly connected with an outer bearing ring 93, and balls are arranged inside the outer bearing ring 93. The outer bearing ring 93 is in rolling connection with the inner bearing ring 94 through the balls to form a bearing structure. A hinge piece is provided on the inner bearing ring 94, which is hinged to the elastic friction assembly.

[0050] Further, the elastic friction assembly includes a friction ring 3, a vibrator 5, a first elastic unit 7 and a second elastic unit 8. The first elastic unit 7 and the second elastic unit 8 are connected by a connecting shaft 6, the vibrator 5 is sleeved on the connecting shaft 6, and the friction ring 3 is connected to the vibrator 5 through a connecting frame 4.

[0051] Specifically, the connecting frame 4 has a structure of a four-claw frame and includes a support platform and support arms. The support platform has a cross structure, with a connecting shaft through hole in the middle, and its inner wall is provided with threads; bolt through holes are provided at the four branch ends of the support platform, and the distance from the center of the support platform to each bolt through hole is equal.

[0052] Further, there are four support arms, and the four support arms have the same structure. Each support arm extends uniformly and equidistantly outward and downward along the outer periphery of the support platform. At the same time, fixing platforms are provided at the ends of the four support arms, and each of the fixing platforms is parallel to the support platform. The friction ring 3 is fixedly connected to the four fixing platforms by bolts.

[0053] Further, the opening on the friction disc 2 is circular, and the diameter of the friction ring 3 is slightly larger than the diameter of the opening, so that the friction ring 3 can move freely on the friction disc 2 without falling into the opening. The friction ring 3 and the friction disc 2 dissipate the vibration energy of the oscillator 5 through sliding friction. The sliding friction coefficient between the friction ring 3 and the friction disc 2 needs to be moderate. The friction coefficient cannot be too large, otherwise when the main structure vibrates to a certain extent, the outer frame 1 and the friction disc 2 will move relative to the elastic friction assembly and the oscillator 5, rather than being locked due to excessive static friction; the friction coefficient cannot be too small, otherwise there is no frictional force between the friction ring 3 and the friction disc 2, and energy dissipation cannot be carried out through friction.

[0054] It should be noted that since the four support arms of the connecting frame 4 are all arranged downward, the friction ring 3 fixedly connected to it is arranged lower than the oscillator 5. When the second elastic unit 8 drives the friction ring 3 to rotate and rub, the movement range of the friction ring 3 in this setting is much smaller than the movement range when the friction ring 3 is arranged parallel to the oscillator 5. That is, the friction ring 3 is arranged below the oscillator 5, which reduces the required opening diameter of the friction disc 2, and then reduces the diameter of the friction disc 2. Therefore, the occupied space of the entire device becomes smaller.

[0055] It should be noted that the vertical distance between the oscillator 5 and the friction ring 3 is greater than 1 / 3 and less than 1 / 2 of the distance between the oscillator 5 and the chassis 103. The lower setting of the friction disc 2 makes the center of gravity of the entire device lower, which is beneficial to the stability of the entire device when working on the main structure, and eliminates the embarrassing problem of uneven vertical force on the vertical oscillator 5 caused by uneven gravity when the friction ring 3 and the oscillator 5 are arranged on the same horizontal plane. However, the vertical distance between the oscillator 5 and the friction ring 3 cannot be too large, otherwise the friction ring 3 and the oscillator 5 will be unstable and may tilt, and one side will be separated from the friction disc 2, and energy consumption cannot be effectively carried out; in addition, if the friction disc 2 is placed too low, the overall area of the friction disc 2 will be too small, which will reduce the movement range of the friction ring 3 and the friction energy consumption efficiency, and energy consumption cannot be effectively carried out.

[0056] Further, the connecting shaft 6 includes a shaft center 61 and a shaft sleeve 62. The shaft center 61 is a cylindrical shaft center, and the shaft sleeve 62 is a cylindrical shaft sleeve with a hollow center. The shaft center 61 is fixedly sleeved inside the shaft sleeve 62.

[0057] Specifically, the outer wall of the bushing 62 is provided with threads, which are helically connected to the connecting shaft through holes on the connecting frame 4, so that the bushing 62 can be fixed on the connecting frame 4. The axis 61 includes an upper hinge portion, a lower hinge portion and an axis rod, wherein the axis rod is of the same length as the bushing 62, so that after the axis 61 is inserted into the bushing 62, both the upper hinge portion and the lower hinge portion are exposed outside the bushing 62.

[0058] Further, the oscillator 5 includes a mass block 51 and a long bolt 52, and the mass block 51 is fixed on the connecting frame 4 through the long bolt 52.

[0059] Specifically, the mass block 51 is composed of multiple layers of disc-shaped mass sheets, and a circular hole is opened in the middle for sleeving on the outer periphery of the connecting shaft 6; bolt holes are uniformly distributed on the outer periphery of the mass block 51 for connecting with the long bolts 52. There are four long bolts 52 in total, which are respectively helically fixed in the bolt through holes on the connecting frame 4, so that the oscillator 5 is fixed on the connecting frame 4.

[0060] It should be noted that the mass parameter of the device can be adjusted by increasing or decreasing the mass block 51. The device structure of the present invention is related to the mass parameter of the oscillator, the stiffness parameter of the elastic component and the damping parameter. By matching the mass of the oscillator 5 with the mass of the main structure to which the device is connected, for the parameter configuration of mass, stiffness and damping, the ratio of the non-linear energy sink damping parameter to the mass parameter should be less than times the natural frequency of the main structure, so that the device generates targeted energy transmission (directional energy transmission) and good robustness, so that after the vibration energy of the main structure is unidirectionally transmitted to the non-linear energy sink, the vibration energy will not return and can only be dissipated through friction.

[0061] Further, one end of the connecting shaft 6 is hinged to the first elastic unit 7, and the other end is hinged to one end of the second elastic unit 8. The free ends of the first elastic unit 7 and the second elastic unit 8 are respectively hinged to the first support 9 and the second support 10. In other words, one end of the first elastic unit 7 is hinged to the connecting shaft 6, and the other end is hinged to the first support 9; one end of the second elastic unit 8 is hinged to the connecting shaft 6, and the other end is hinged to the second support 10.

[0062] Further, the first elastic unit 7 and the second elastic unit 8 have the same structure, and both include a spring 71, a first spring seat 72 and a second spring seat 73. The second spring seat 73 is sleeved outside the first spring seat 72, and the two can be telescopically movable, and the spring 71 is arranged on the outer walls of the first spring seat 72 and the second spring seat 73.

[0063] Further, the first spring seat 72 includes a first hinge plate 721, a first positioning plate 722, and a polygonal inner sleeve 723. The positioning plate 722 is a sheet-like structure, with one side connected to the first hinge plate 721 and the other side connected to the polygonal inner sleeve 723. The first hinge plate 721 is hinged to the upper hinge portion of the shaft center 61 or the hinge piece on the inner ring 94 of the first support 9.

[0064] Further, the second spring seat 73 includes a second hinge plate 731, a positioning plate 732, and a polygonal outer sleeve 733. The positioning plate 732 is also a sheet-like structure, with one side connected to the second hinge plate 731 and the other side connected to the polygonal outer sleeve 733. The second hinge plate 731 is hinged to the hinge piece on the inner ring 94 of the first support 9 or the upper hinge portion of the shaft center 61.

[0065] Specifically, the diameter of the polygonal outer sleeve 733 is slightly larger than that of the polygonal inner sleeve 723, such that the polygonal outer sleeve 733 can be sleeved on the outer wall of the inner sleeve 723, and the two can perform stretching or contraction movements through an external force.

[0066] It should be noted that the polygonal inner sleeve 723 and the polygonal outer sleeve 733 are specifically set as polygonal sleeves, with the number of sides being greater than or equal to three, preferably six. Both the inner and outer sleeves are set as polygons, so that the first spring seat 72 and the second spring seat 73 do not rotate relative to each other, and only perform contraction and elongation movements through the spring 71. In other words, because the inner and outer sleeves are set as polygons, relative rotational movement does not occur between the two sleeves, otherwise the hinge directions of the two would be inconsistent, causing torsion at both ends of the spring 71 and affecting the energy dissipation effect.

[0067] Therefore, the design of the polygons of the inner and outer sleeves enables the two elastic units, i.e., the first elastic unit 7 and the second elastic unit 8, to always be in a vertical plane through the connection of the intermediate connecting shaft 6 during the process of frictional energy dissipation. That is, the movement of the entire elastic friction assembly is always within this vertical plane, causing the two springs to form a non-linear restoring force. Through the bearing arrangement on the support, the oscillator 5 is only subjected to the non-linear restoring force formed by the two elastic components within the vertical plane, enabling the vertical plane formed by the elastic friction assembly to rotate in any direction, thereby meeting the movement requirements of the oscillator 5 in all directions on the plane.

[0068] A usage method of a two-dimensional non-linear energy trap device, where the device is the above-mentioned two-dimensional non-linear energy trap device.

[0069] It should be noted that the two-dimensional non-linear energy trap device of the present invention is preferably a bistable two-dimensional non-linear energy trap device, enabling the oscillator 5 to quickly oscillate between two stable states, thereby absorbing higher energy and also showing significant oscillatory movement in a wide frequency range.

[0070] The specific methods include:

[0071] S1: The friction disk 2 is connected to the outer frame 1 by bolts, and at this time, the friction disk 2 is arranged parallel to the ground; the outer frame 1 is fixedly connected to the main building structure through angle steel 104.

[0072] S2: The top disk 102 and the bottom disk 103 on the outer frame 1 are respectively screwed to the first support 9 and the second support 10.

[0073] S3: One end of the first elastic unit 7 is hinged to the first support 9, and the other end is a free end; then one end of the second elastic unit 8 is hinged to the second support 10, and the other end is a free end.

[0074] S4: The friction ring 3 is fixedly connected to the connecting frame 4, and then the oscillator 5 is fixedly connected to the connecting frame 4 by a long bolt 52, so that the friction ring 3, the connecting frame 4 and the oscillator 5 form a whole, and then this whole is fixed on the connecting shaft 6.

[0075] S5: The free ends of the first elastic unit 7 and the second elastic unit 8 are hinged to the connecting shaft 6.

[0076] S6: Adjust the first support 9 and the second support 10 so that when the first elastic unit 7 and the first elastic unit 8 are freely extended, they are not inclined in the same straight line, that is, in the vertical plane, the oscillator 5 has two stable force balance points.

[0077] S7: Increase or decrease the mass of the oscillator 5 and adjust the mass parameter so that the mass parameter of the non - linear energy sink oscillator matches the mass of the connected main building structure, and satisfy that the ratio of the non - linear energy sink damping parameter to the mass parameter is less than times; at this time, the oscillator 5 is in a steady state position, that is, the oscillator 5 is in force balance, and at this time, the first elastic unit 7 and the second elastic unit 8 are in a freely extended state, in the same plane but not in the same straight line.

[0078] S8: When the main structure connected to the device is excited by loads such as wind and earthquake, the main structure undergoes horizontal vibration, and the outer frame 1 connected to the main structure moves synchronously with the main structure; due to its own inertia, the displacement of the oscillator 5 does not change at the original position.

[0079] S9: In step 2, the first elastic unit 7 and the second elastic unit 8 are in a stretched state, and the vertical planes where they are located will rotate towards the vibration direction of the main structure. When stretched to a certain extent, the oscillator 5, under the elastic tension of the two elastic units, drives the connecting shaft 6 and the two elastic units to rotate to the vibration direction; at this time, the oscillator 5 is subjected to the central non-linear restoring force provided by the two elastic units, and the oscillator 5 will perform reciprocating motion. Since the force received by the oscillator 5 is non-linear, that is, the oscillator 5 has a non-constant non-linear stiffness, it can instantaneously resonate and capture the vibration frequency of the main structure, and absorb the vibration of the main structure onto the oscillator 5 and the two elastic units.

[0080] S91: Optionally, when the oscillator 5 is in the central region, the two elastic units are compressed, providing an outward non-linear restoring force for the oscillator 5.

[0081] S92: Optionally, when the oscillator 5 is far from the central region, the two elastic units are stretched, providing an inward non-linear restoring force for the oscillator 5.

[0082] S10: After the oscillator 5 and the two elastic units have vibration energy, the movement of the oscillator 5 will drive the friction ring 3 to slide relative to the friction disk 2 through the connecting frame 4, causing sliding friction between the friction ring 3 and the friction disk 2, consuming the vibration energy. Since the oscillator 5 has two stable force equilibrium states in the vertical plane, it can oscillate rapidly between the two steady states, thereby absorbing higher energy, and also showing significant movement in a wide frequency range.

[0083] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A two-dimensional non-linear energy well device, characterized in that, It includes an outer frame (1), a friction disk (2), an elastic friction assembly, and a support; The friction disk (2) is fixedly arranged in parallel within the outer frame (1). An opening is provided in the middle of the friction disk (2). Both ends of the elastic friction assembly pass through the opening and are respectively hinged to the top end and the bottom end of the outer frame (1) through the support; There is a sliding friction between the friction assembly and the friction disk (2); The elastic friction assembly includes: a friction ring (3), an oscillator (5), a first elastic unit (7), and a second elastic unit (8); The first elastic unit (7) and the second elastic unit (8) are connected to each other through a connecting shaft (6). The oscillator (5) is sleeved on the connecting shaft (6). The friction ring (3) is fixedly connected to the oscillator (5) through a connecting frame (4).

2. The two-dimensional non-linear energy well device according to claim 1, wherein The first elastic unit (7) and the second elastic unit (8) have the same structure; The first elastic unit (7) includes a spring (71), a first spring seat (72), and a second spring seat (73).

3. The two-dimensional non-linear energy well device according to claim 2, wherein, Both the first spring seat (72) and the second spring seat (73) include a polygonal sleeve.

4. The two-dimensional non-linear energy well device according to any one of claims 1-3, characterized in that, The connecting frame (4) includes four support arms, and all four support arms are arranged downward.

5. The two-dimensional non-linear energy well device according to claim 1 or 2, characterized in that The diameter of the friction ring (3) is larger than the diameter of the friction disk (2), and the two are in sliding friction connection.

6. The two-dimensional non-linear energy well device according to claim 1, characterized in that, The oscillator (5) includes a mass block and a long bolt (52); The mass block (51) is fixed to the connecting frame (4) through the long bolt (52).

7. The two-dimensional non-linear energy well device according to claim 1, characterized in that, The support includes a first support (9) and a second support (10); The first support (9) and the second support (10) are respectively connected to the top end and the bottom end of the outer frame (1).

8. The two-dimensional non-linear energy well device according to claim 7, wherein The first support (9) and the second support (10) have the same structure. The first support (9) includes a nut (91), a support rod (92), an outer bearing ring (93), and an inner bearing ring (94).

9. A method for using a two-dimensional non-linear energy well device, characterized in that, The specific steps are as follows: Assemble the outer frame (1), the friction disk (2), the elastic friction assembly, and the support, and carry out vibration energy consumption; Increase or decrease the mass of the oscillator (5), adjust the mass parameter so that the mass parameter matches the mass of the connected main building structure; Furthermore, make the oscillator (5) in a steady state position; When the main structure vibrates, the outer frame (1) moves synchronously with the main structure; Due to its own inertia, the displacement of the oscillator (5) does not change at the original position; The first elastic unit (7) and the second elastic unit (8) pull the oscillator (5) and the connecting shaft (6) to move in the vibration direction; The oscillator (5) performs reciprocating motion under the action of the central non-linear restoring force provided by the two elastic units; The motion of the oscillator (5) drives the friction ring (3) and the friction disk (2) to have relative sliding through the connecting frame (4), so that sliding friction is generated between the friction ring (3) and the friction disk (2), and the vibration energy is consumed.

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