A scissors frame-based orthogonal type inerter vibration control system

Abstract

The application relates to a scissors-frame-based orthogonal type inerter vibration control system, which comprises a sliding track, a scissors frame, a sliding support and a vibration control device; the sliding track is connected with a structure to be damped and comprises first and second sliding rails arranged in parallel; the scissors frame comprises first and second supporting rods with the same length, the midpoint of the first supporting rod is hinged with the midpoint of the second supporting rod, the two ends of the first and second supporting rods are hinged with the sliding supports one by one, a moving pair is formed between the sliding supports and the sliding track, and the two ends of the vibration control device are connected with the first and second supporting rods respectively. Compared with the prior art, the application has the advantages that the orthogonal arrangement method is used, the eccentricity resistance and instability performance of the element are improved, the sliding support and the sliding track are used, one-way control under bidirectional deformation can be realized, the application can adapt to various application requirements and has high flexibility, and the overall structure is stable and suitable for high-frequency vibration.

Description

Technical Field

[0001] This invention relates to inertial-capacitive vibration control systems, and more particularly to an orthogonal inertial-capacitive vibration control system based on a scissor frame. Background Technology

[0002] Inertial capacitance is a novel structural control element with acceleration dependent at both ends. Currently, various mechanisms exist to simulate its mechanical behavior, such as ball screw inertial capacitance and rack and pinion inertial capacitance. There are also various forms of composite inertial capacitance systems, such as dual-tuned inertial capacitance systems and tuned inertial capacitance systems that use collision friction damping for energy dissipation. Among these, mechanically driven inertial capacitances, such as ball screw and rack and pinion inertial capacitances, have low resistance to eccentricity and instability, making them prone to failure. Linearly arranged inertial capacitance systems, such as dual-tuned inertial capacitance systems and tuned inertial capacitance systems that use collision friction damping for energy dissipation, also suffer from the same problem. The inertial capacitance and damping components in these systems are prone to performance degradation or even failure under predictable events such as eccentricity or instability, resulting in weak stability.

[0003] A search revealed that application publication number CN114045953A discloses a rhombus-shaped energy dissipation module and a swing bracket, specifically disclosing that: the rhombus-shaped energy dissipation module includes two first connecting rods that are arranged crosswise and hinged to each other, the ends of the first connecting rods are connected by second connecting rods to form a first rhombus frame and a second rhombus frame respectively, and the first connecting rods and the second connecting rods are hinged; the connection point of the first rhombus frame and the second rhombus frame is the hinge point of the two first connecting rods; it also includes an inertia container, a damping assembly and a lead screw assembly, the inertia container connects the opposite ends of the first rhombus frame, the damping assembly connects the opposite ends of the second rhombus frame, and the lead screw assembly connects the first rhombus frame and the second rhombus frame.

[0004] However, when used alone, this rhomboid energy dissipation module cannot achieve unidirectional vibration reduction during bidirectional deformation. This is because the rhomboid support points on both sides require rotational freedom. Once a relative displacement occurs in a direction other than the working direction, its working direction will deviate from its original direction, resulting in a weakened control effect. Therefore, its patent largely relies on special installation methods, such as swing brackets. Although the rhomboid energy dissipation module has a certain degree of variability, due to its double-rhomboid splicing structure, its working direction requires a high restoring force. Therefore, the two sides in the working direction need to be elastic elements. The rhomboid energy dissipation module will twist when stretched and compressed, thus its stability will be greatly reduced, making it unsuitable for high-frequency vibration conditions.

[0005] In summary, the technical problem that needs to be solved is how to design an inertial capacitive vibration control system that can achieve unidirectional control under bidirectional deformation, has diverse elastic element arrangement methods, and is suitable for high-frequency vibration. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an orthogonal inertial-capacitive vibration control system based on a scissor frame.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] According to one aspect of the present invention, an orthogonal inertial-capacitive vibration control system based on a scissor frame is provided, comprising a sliding track, a scissor frame, a sliding support, and a vibration control device; the sliding track is connected to the structure to be vibration-damped and includes a first slide rail and a second slide rail arranged in parallel; the scissor frame includes a first support rod and a second support rod of the same length, the midpoints of the first support rod and the second support rod are hinged together, the two ends of the first support rod and the second support rod are hinged one-to-one with the sliding support; a sliding pair is formed between the sliding support and the sliding track; the scissor frame is located between the first slide rail and the second slide rail; and the two ends of the vibration control device are respectively connected to the first support rod and the second support rod.

[0009] As a preferred technical solution, the frame angle is defined as the angle with the midpoint of the first support rod and the midpoint of the second support rod as the vertex, the first support rod and the second support rod as the sides, and the angle bisector passing through the sliding track.

[0010] As a preferred technical solution, when the long axis of the vibration control device is parallel to the direction of the sliding track, its stroke u1 is:

[0011]

[0012] Among them, u g R is the travel distance of the sliding track, R is the distance from the end point of the vibration control device to the midpoint of the first support rod and the midpoint of the second support rod, and L is half the length of the support rod.

[0013] As a preferred technical solution, when the long axis of the vibration control device is parallel to the direction of the sliding track, its stroke u2 is:

[0014]

[0015] Where θ0 is half of the initial frame angle, and θ1 is half of the frame angle after the sliding track has slid.

[0016] As a preferred technical solution, the vibration control device includes at least one of an inertial container, a damper, and a stiffness spring.

[0017] As a preferred technical solution, at least one of the inertial container, damper, and stiffness spring is used.

[0018] As a preferred technical solution, the vibration control device includes an inertial container, the major axis of which is parallel to the direction of the sliding track.

[0019] As a preferred technical solution, the vibration control device further includes a damper, wherein the long axis of the damper is parallel to the long axis of the inertial container.

[0020] As a preferred technical solution, the vibration control device further includes a stiffness spring, the direction of which is perpendicular to the direction of the sliding track.

[0021] As a preferred technical solution, the sliding track is provided with a sliding groove, and the sliding support is embedded in the sliding groove and slides along the sliding track in the sliding groove.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1) This invention uses an orthogonal arrangement method based on scissor frames to improve the anti-eccentricity and instability performance of components, thereby improving system stability and accessibility while satisfying vibration control functions;

[0024] 2) This invention uses a sliding support and a sliding track, which can achieve unidirectional control under bidirectional deformation;

[0025] 3) The number, type, and arrangement of the components included in the vibration control device on the scissor frame of the present invention are all replaceable, and the included angle of the scissor frame is adjustable. By comprehensively adjusting the above conditions, it can adapt to various application requirements and has high flexibility.

[0026] 4) The overall structure of this invention is stable and suitable for high-frequency vibration. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment 1 of the orthogonal inertial-capacitive vibration control system based on a scissor frame according to the present invention;

[0028] Figure 2 This is a schematic diagram of the component topology of an orthogonal inertial-capacitive vibration control system based on a scissor frame according to the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of an embodiment 2 of the orthogonal inertial-capacitive vibration control system based on a scissor frame according to the present invention;

[0030] Figure 4 This is a schematic diagram of the overall structure of an embodiment 3 of the orthogonal inertial-capacitive vibration control system based on a scissor frame according to the present invention;

[0031] Figure 1 As indicated by the index number:

[0032] 1. Sliding rail; 10. First slide rail; 11. Second slide rail; 2. Scissor frame; 20. First support rod; 21. Second support rod; 22. Frame corner; 23. Pin; 3. Sliding support; 40. Inertia container; 41. Damper; 42. Stiffness spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] This invention proposes an orthogonal inertial capacitive vibration control system based on a scissor frame 2, which can realize the forward operation of components in the driving force direction and the reverse operation of components in the orthogonal direction. An embodiment is as follows:

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, the present invention provides an orthogonal inertial-capacitive vibration control system based on a scissor frame 2, including a sliding track 1, a scissor frame 2, a sliding support 3, and a vibration control device. The vibration control device includes an inertial container 40, a damper 41, and a stiffness spring 42.

[0037] The sliding track 1 is directly connected to the structure to be damped and includes a first slide rail 10 and a second slide rail 11. The first slide rail 10 and the second slide rail 11 are arranged in parallel, and the sliding track 1 is provided with a groove. The distance between the first slide rail 10 and the second slide rail 11 can be compressed or stretched under the drive of the structure to be damped. The direction of compression and stretching is defined as the direction of the driving force of the system, and the direction of the major axis of the sliding track 1 is defined as the orthogonal direction.

[0038] The scissor frame 2 includes a first support rod 20, a second support rod 21, and a pin 23 of equal length. The midpoints of the first support rod 20 and the second support rod 21 are hinged together by the pin 23. The first support rod 20 and the second support rod 21 have sufficient rigidity to rotate around the pin 23. The two ends of the first support rod 20 and the second support rod 21 are each hinged to an independent sliding support 3, that is, the ends of the support rods and the sliding supports 3 are hinged one-to-one. The angle 22 is defined as the angle bisector of the angle bisector passing through the sliding track 1, with the pin 23 as the vertex and the first support rod 20 and the second support rod 21 as the sides.

[0039] There are four sliding supports 3, which correspond to the two ends of the first support rod 20 and the second support rod 21. They are symmetrically installed on the two slide rails and embedded in the slide groove of the slide rail 1, so that they can slide along the track on the slide rail 1.

[0040] There is one inertia container 40, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the orthogonal direction; there is one damper 41, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the orthogonal direction; there are two stiffness springs 42, with their two ends connected to the first support rod 20 and the second support rod 21 respectively, and their long axis direction is parallel to the driving force direction.

[0041] Example 2

[0042] like Figure 3 As shown, the present invention provides an orthogonal inertial-capacitive vibration control system based on a scissor frame 2, including a sliding track 1, a scissor frame 2, a sliding support 3, and a vibration control device, wherein the vibration control device includes an inertial container 40.

[0043] The sliding track 1 is directly connected to the structure to be damped and includes a first slide rail 10 and a second slide rail 11. The first slide rail 10 and the second slide rail 11 are arranged in parallel, and the sliding track 1 is provided with a groove. The distance between the first slide rail 10 and the second slide rail 11 can be compressed or stretched under the drive of the structure to be damped. The direction of compression and stretching is defined as the direction of the driving force of the system, and the direction of the major axis of the sliding track 1 is defined as the orthogonal direction.

[0044] The scissor frame 2 includes a first support rod 20, a second support rod 21, and a pin 23 of equal length. The midpoints of the first support rod 20 and the second support rod 21 are hinged together by the pin 23. The first support rod 20 and the second support rod 21 have sufficient rigidity to rotate around the pin 23. The two ends of the first support rod 20 and the second support rod 21 are each hinged to an independent sliding support 3, that is, the ends of the support rods and the sliding supports 3 are hinged one-to-one. The angle 22 is defined as the angle bisector of the angle bisector passing through the sliding track 1, with the pin 23 as the vertex and the first support rod 20 and the second support rod 21 as the sides.

[0045] There are four sliding supports 3, which correspond to the two ends of the first support rod 20 and the second support rod 21. They are symmetrically installed on the two slide rails and embedded in the slide groove of the slide rail 1, so that they can slide along the track on the slide rail 1.

[0046] There is one inertia container 40, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the orthogonal direction.

[0047] Example 3

[0048] like Figure 4 As shown, the present invention provides an orthogonal inertial-capacitive vibration control system based on a scissor frame 2, including a sliding track 1, a scissor frame 2, a sliding support 3, and a vibration control device. The vibration control device includes an inertial container 40, a damper 41, and a stiffness spring 42.

[0049] The sliding track 1 is directly connected to the structure to be damped and includes a first slide rail 10 and a second slide rail 11. The first slide rail 10 and the second slide rail 11 are arranged in parallel, and the sliding track 1 is provided with a groove. The distance between the first slide rail 10 and the second slide rail 11 can be compressed or stretched under the drive of the structure to be damped. The direction of compression and stretching is defined as the direction of the driving force of the system, and the direction of the major axis of the sliding track 1 is defined as the orthogonal direction.

[0050] The scissor frame 2 includes a first support rod 20, a second support rod 21, and a pin 23 of equal length. The midpoints of the first support rod 20 and the second support rod 21 are hinged together by the pin 23. The first support rod 20 and the second support rod 21 have sufficient rigidity to rotate around the pin 23. The two ends of the first support rod 20 and the second support rod 21 are each hinged to an independent sliding support 3, that is, the ends of the support rods and the sliding supports 3 are hinged one-to-one. The angle 22 is defined as the angle bisector of the angle bisector passing through the sliding track 1, with the pin 23 as the vertex and the first support rod 20 and the second support rod 21 as the sides.

[0051] There are four sliding supports 3, which correspond to the two ends of the first support rod 20 and the second support rod 21. They are symmetrically installed on the two slide rails and embedded in the slide groove of the slide rail 1, so that they can slide along the track on the slide rail 1.

[0052] There is one inertia container 40, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the orthogonal direction; there is one damper 41, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the driving force direction; there is one stiffness spring 42, with its two ends connected to the first support rod 20 and the second support rod 21 respectively, and its long axis direction is parallel to the driving force direction.

[0053] The working principle of this invention is as follows:

[0054] The sliding track 1 is driven by the external structure (the structure to be damped) to vibrate in the direction of the driving force, causing the scissor frame 2 to rotate repeatedly around the pin 23 (when compressed, the sliding support 3 slides outward of the device, causing the first support rod 20 and the second support rod 21 to rotate symmetrically, and the direction of rotation increases the frame angle 22; when stretched, the direction is opposite). The repeated rotation of the scissor frame 2 causes the vibration control device arranged on the frame to vibrate. The vibration control device arranged in the direction of the driving force has the same relative vibration direction as the sliding track 1, such as the two stiffness springs 42 in Embodiment 1; the vibration control device arranged in the orthogonal direction has the opposite relative vibration direction to the sliding track 1, such as the inertia container 40 and the damper 41 in Embodiment 1.

[0055] This invention has many optimization and adjustment schemes. Here, several more advantageous schemes are provided and their optimization principles and methods are explained.

[0056] The stroke of the components arranged on the scissor frame 24 differs from that of the sliding rail 1, and can be adjusted by changing the initial size of the frame angle 22. The initial size of the frame angle 22 is set according to the usage requirements. Based on the geometric relationship, the stroke u1 of the components arranged in the direction of the driving force is:

[0057]

[0058] Among them, u g R is the stroke of the sliding track 1, R is the distance from the end point of the vibration control device to the midpoint of the first support rod 20 and the midpoint of the second support rod 21, and L is half the length of the support rod.

[0059] The stroke u2 of the components arranged in orthogonal directions is:

[0060]

[0061] Where θ0 is half of the initial frame angle 22, and θ1 is half of the frame angle 22 after the sliding track 1 slides.

[0062] The above formula illustrates the nonlinear properties of the system proposed in this invention, and the parameters of the vibration control device can be adjusted according to the above formula.

[0063] This invention proposes an orthogonal inertial-capacitive vibration control system based on a scissor frame 2. The optimized scheme lies in the fact that the arrangement of the vibration control device on the scissor frame 2 can be arbitrarily modified. Only some preferred embodiments are presented here for reference: One preferred embodiment, namely Embodiment 1, is where the inertial container 40 and damper 41 are arranged in an orthogonal direction, and the stiffness spring 42, with its strong anti-eccentricity, is arranged in the direction of the driving force; Another preferred embodiment, namely Embodiment 2, is where the inertial container 40 is arranged solely in an orthogonal direction as a method to enhance stability; The third preferred embodiment is the embodiment 3 provided by the present invention, in which the inertia container 40 is arranged in an orthogonal direction, and the damper 41 and stiffness spring 42 are arranged in the direction of driving force. It is worth noting that the vibration control device can be selected individually from one of the inertia container 40, damper 41 and stiffness spring 42, or can be selected in any combination of the inertia container 40, damper 41 and stiffness spring 42. The number of components selected by the vibration control device is at least one, and the arrangement of each component can be determined according to the requirements. The arrangement derived under the frame of the scissor frame 2 should be regarded as a simple extension or optimization of the present invention.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An orthogonal inertial-capacitive vibration control system based on a scissor frame, characterized in that, The system includes a sliding track (1), a scissor frame (2), a sliding support (3), and a vibration control device. The sliding track (1) is connected to the structure to be vibration-damped and includes a first slide rail (10) and a second slide rail (11) arranged in parallel. The scissor frame (2) includes a first support rod (20) and a second support rod (21) of the same length. The midpoint of the first support rod (20) and the midpoint of the second support rod (21) are hinged together. The two ends of the first support rod (20) and the second support rod (21) are hinged one-to-one with the sliding support (3). The sliding support (3) and the sliding track (1) form a sliding pair. The scissor frame (2) is located between the first slide rail (10) and the second slide rail (11). The two ends of the vibration control device are respectively connected to the first support rod (20) and the second support rod (21). Define the frame angle (22) as the angle between the midpoint of the first support (20) and the midpoint of the second support (21), with the first support (20) and the second support (21) as sides and the angle bisector passing through the sliding track (1). When the long axis of the vibration control device is parallel to the direction of the sliding track (1), its stroke... for: ， in, For the stroke of the sliding track (1), The distance from the endpoint of the vibration control device to the midpoint of the first support rod (20) and the midpoint of the second support rod (21) is... It is half the length of the support rod; When the long axis of the vibration control device is parallel to the direction of the sliding track (1), its stroke... for: ， in, It is half of the initial frame angle (22). It is half of the frame angle (22) after the sliding track (1) slides.

2. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 1, characterized in that, The vibration control device includes at least one of an inertia container (40), a damper (41), and a stiffness spring (42).

3. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 2, characterized in that, The inertia container (40), damper (41) and stiffness spring (42) are at least one.

4. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 3, characterized in that, The vibration control device includes an inertial container (40), the major axis of which is parallel to the direction of the sliding track (1).

5. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 4, characterized in that, The vibration control device further includes a damper (41), the major axis of which is parallel to the major axis of the inertial container (40).

6. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 5, characterized in that, The vibration control device further includes a stiffness spring (42), the direction of which is perpendicular to the direction of the sliding track (1).

7. The orthogonal inertial-capacitive vibration control system based on a scissor frame according to claim 1, characterized in that, The sliding track (1) is provided with a groove, and the sliding support (3) is embedded in the groove and slides along the sliding track (1) in the groove.

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