CN112832399B - Multistage self-adaptive composite inertial volume vibration reduction device, method and structure - Google Patents

Abstract

The invention provides a multistage self-adaptive composite inertial volume damping device and method and a civil engineering structure. The multistage self-adaptive composite inertial volume vibration damper comprises a mass body, a first-stage guide rail, a second-stage guide rail and a mass body, wherein the mass body comprises a telescopic box body capable of moving along the Y direction, a plurality of telescopic plates which are placed along the Y direction and can move along the X direction are arranged in the mass body, the telescopic plates are connected through a linkage spring, and the telescopic plate on the outermost side is connected with the first-stage guide rail through a tuning spring so as to realize self-adaptive collision of collision balls between the telescopic plates in the X direction; the magnetorheological hydraulic energy dissipation mechanism comprises an energy dissipation box, a piston and a piston, wherein the energy dissipation box is provided with a multi-stage sliding frame and the piston, magnetorheological fluid is filled in the energy dissipation box, the piston can slide along a rack on the inner wall of the energy dissipation box, and excitation coils are arranged at two ends of the energy dissipation box; the transmission mechanism comprises a transmission plate, the bottom of the transmission plate is fixed on the rack, and the transmission plate is connected to the inner side wall of the working box through a return spring; and the transmission plate is also provided with a displacement sensor for monitoring the displacement of the transmission plate and is connected with the excitation coil through an electromagnetic control circuit.

Description

Multistage self-adaptive composite inertial volume vibration reduction device, method and structure

Technical Field

The invention belongs to the field of vibration control of towering and large-span structures, and particularly relates to a multistage self-adaptive composite inertial volume vibration reduction device, method and structure.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

With the development of high-rise and large-span structures towards function diversification and structure complication, the vibration of the structure under the action of environmental load is more serious, the performance and the service life of the structure can be influenced by unfavorable vibration, and the safety problem of the engineering structure in the whole service life can be effectively solved by adopting vibration reduction control measures, so that the influence of disasters is reduced. The dynamic vibration absorption type vibration reduction device is in controlled array type resonance with the main structure through the sub-structure, and the vibration energy of the energy consumption damping material or the device consumption sub-structure is applied to achieve the purpose of dynamic vibration absorption; through the combination of the dynamic vibration absorption device and the semi-active control, the energy consumption capability of the vibration absorption device can be effectively improved, and the real-time control of the structural vibration is realized.

However, for civil engineering structures with larger mass, the centralized arrangement of the dynamic vibration absorbing devices has high requirements on the energy consumption capability of the dynamic vibration absorbing devices, and the requirements on the inertia mass and the stroke of the damper in the vibration absorbing devices are increased, so that the arrangement and the realization of the vibration absorbing devices are difficult. The damping element and the two-end point inertia element are combined to form the inertia capacity damper, so that the inertia characteristic can be adjusted on the premise of basically not changing the physical mass of the structure, the damping force and the energy consumption capacity are obviously amplified, and the inertia increased by the inertia capacity cannot increase the earthquake action borne by the structure. In addition, the inventor finds that in the collision energy consumption technology, the collision gap has a large influence on the energy consumption effect, and most of the currently adopted collision energy consumption technologies are fixed collision gaps, so that the collision gaps cannot be automatically adjusted according to the vibration responses of different degrees of the structure, and the effective utilization rate of the collision energy consumption device is reduced.

Disclosure of Invention

In order to solve at least one technical problem in the background art, the invention provides a multistage self-adaptive composite inertial volume damping device, a method and a civil engineering structure, wherein the effective deformation of an internal magnetorheological hydraulic energy consumption mechanism is amplified through a composite inertial volume system, so that the effects of energy consumption and efficiency improvement are achieved, the internal space of the damping device is optimized, and a good damping control effect can be achieved under the condition of smaller additional mass.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a multistage self-adaptive composite inertial volume vibration damper.

A multistage self-adaptive composite inertial volume vibration damper comprises a working box, a mass body, a transmission mechanism and a magnetorheological hydraulic energy consumption mechanism, wherein the mass body, the transmission mechanism and the magnetorheological hydraulic energy consumption mechanism are arranged in the working box;

the mass body comprises a telescopic box body capable of moving along the Y direction, a plurality of telescopic plates which are placed along the Y direction and can move along the X direction are arranged in the telescopic box body, the telescopic plates are connected through a linkage spring, and the telescopic plate on the outermost side is connected with the primary guide rail through a tuning spring so as to realize self-adaptive collision of collision balls between the telescopic plates in the X direction;

the magnetorheological hydraulic energy dissipation mechanism comprises an energy dissipation box, wherein the energy dissipation box is provided with a multi-stage sliding frame and a piston, the magnetorheological fluid is filled in the energy dissipation box, the piston can slide along a rack on the inner wall of the energy dissipation box, and excitation coils are arranged at two ends of the energy dissipation box;

the transmission mechanism comprises a transmission plate, the bottom of the transmission plate is fixed on the rack, and the transmission plate is connected to the inner side wall of the working box through a return spring; and the transmission plate is also provided with a displacement sensor for monitoring the displacement of the transmission plate and is connected with the excitation coil through an electromagnetic control circuit.

In one embodiment, the bottom, top and sides of the expansion plate are provided with balls.

In one embodiment, the mass body is provided with a moving guide beam on the outer side along the X and Y directions, and the moving guide beam is arranged in the secondary guide rail through a ball, so that the mass body can move along the secondary guide rail in the horizontal direction.

In one embodiment, the tuning spring is connected to the primary guide rail by a ball so that the tuning spring can slide in a direction perpendicular to the axis thereof, and the mounting position of the ball in the primary guide rail is vertically offset from the mounting position of the secondary guide rail.

As an implementation mode, the inner side wall of the working box is provided with a limiting device, and the limiting device has a set length so as to ensure that the mass body can play a limiting role when moving to any position.

As an implementation mode, the tail end of the limiting device is provided with rubber, so that the quality body is prevented from being damaged by collision with the limiting device.

As an embodiment, the sliding frame is divided into three stages: the first-stage sliding frame is connected with the threaded rod through threads arranged at the end part of the first-stage sliding frame and slides along the rack on the inner side of the energy consumption box through a first-stage gear arranged on the wall of the first-stage sliding frame; the frame wall of the secondary sliding frame is provided with a secondary gear, and the outer side wall of the secondary sliding frame is provided with a rack which can drive the secondary sliding frame to slide by the meshing of the primary gear; the outer side wall of the three-stage sliding frame is provided with a rack, and the end part of the three-stage sliding frame is provided with a piston.

As an implementation mode, the number of the first-stage sliding frame and the third-stage sliding frame is 1; when the number of the secondary sliding frames is n, the displacement stroke of the piston can reach n +2 times of the stroke of the primary sliding frame, and n is an integer.

The invention provides a working method of a multistage self-adaptive composite inertial volume vibration damper.

A working method of a multistage self-adaptive composite inertial volume vibration damper comprises the following steps:

when the structure vibrates, the collision ball inside the mass body generates initial motion in any direction along the horizontal plane inside the telescopic box body due to inertia; in the X direction, the collision ball pushes the telescopic plates to slide, the distance between the telescopic plates is increased, and the collision gap is increased; in the Y direction, the collision ball pushes the side wall of the telescopic box body to move, the telescopic box body is unfolded in cooperation with the telescopic plate, and the collision gap is increased;

when the motion range of the mass body reaches the position of the transmission plate, the side wall of the mass body pushes the transmission plate to move, and the motion of the transmission plate drives the rack to transmit, so that the corresponding gear is driven to rotate, the sliding frame of the corresponding grade is driven to slide, and finally the piston is driven to move;

when the piston moves, the magnetorheological fluid in the energy consumption box is pushed to flow to form a hydraulic inerter mechanism, a displacement sensor arranged on a transmission plate monitors the movement condition of the transmission plate, the magnetic field intensity generated by an excitation coil is adjusted through an electromagnetic control circuit, the damping magnitude of the magnetorheological fluid is changed in real time, and the energy consumption level of the energy consumption box is adjusted to be adaptive to the energy consumption requirement;

after the vibration is finished, the mass body returns to the original position under the action of the guide rail and the tuning spring, the arrangement of the telescopic plates returns to the original position under the action of the linkage spring, the transmission plate returns to the original position under the action of the reset spring, the magnetorheological fluid returns to the flowing state, and the whole vibration damper is in the original state.

The third aspect of the invention provides a structure, which comprises the multistage self-adaptive composite inertial volume vibration damping device.

The invention has the beneficial effects that:

(1) the multistage self-adaptive composite inertial capacity vibration damping device disclosed by the invention combines the advantages of semi-active control and passive control, realizes hybrid and multistage control, can adjust the energy consumption effect of the device in real time according to information fed back by structural vibration, and has the advantages of high control precision, wide controllable frequency band, small energy input, higher economy and technical rationality.

(2) The multistage self-adaptive composite inertial capacity vibration damping device can realize self-adaptation and self-adjustment according to the response of the structure under the action of environmental loads such as wind load, earthquake action and the like, thereby having better vibration damping performance, realizing the self-adaptation of collision clearance for collision energy consumption, automatically adjusting the collision clearance without external control, adapting the collision clearance to collision kinetic energy and achieving a better energy consumption state; by adopting magneto-rheological hydraulic damping, damping adjustment in a very short time can be realized through current, and the problem of semi-active adjustment lag is avoided.

(3) The multistage self-adaptive composite inerter vibration damper disclosed by the invention combines a gear-rack inerter mechanism and a hydraulic inerter mechanism to form a composite inerter energy consumption mechanism, can realize flexible adjustment of inertia, amplifies effective deformation in the device, further improves the energy consumption efficiency, can realize a good energy consumption effect on the basis of smaller inertia mass, reduces the additional power effect caused by additional mass in the structure, and has higher practicability.

Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic structural diagram of a multi-stage adaptive composite inerter damping device according to one or more embodiments of the present invention;

FIG. 2 is a schematic illustration of a rail and mass connection according to one or more embodiments of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4(a) is a schematic illustration of a telescoping panel inner panel construction according to one or more embodiments of the present invention;

FIG. 4(b) is a schematic structural view of an outer plate of a retractable plate according to one or more embodiments of the present invention;

FIG. 4(c) is a top view of a telescoping plate connection configuration according to one or more embodiments of the present invention;

FIG. 5(a) is a schematic view of an initial position structure of a magnetorheological hydraulic energy consuming mechanism according to one or more embodiments of the invention;

FIG. 5(b) is a schematic diagram of an operational configuration of a magnetorheological hydraulic energy dissipating mechanism according to one or more embodiments of the present invention;

FIG. 6(a) is a schematic diagram of a primary slide frame configuration in accordance with one or more embodiments of the present invention;

FIG. 6(b) is a schematic diagram of a two-stage sliding frame structure according to one or more embodiments of the present invention;

FIG. 6(c) is a schematic diagram of a three-level sliding frame structure according to one or more embodiments of the present invention;

the magnetorheological fluid damper comprises a working box 1, a working box 2, a mass body 3, a telescopic box body 4, a telescopic plate 4a, an inner plate 4b, an outer plate 5, a ball 6, a linkage spring 7, a tuning spring 8a, a primary guide rail 8b, a secondary guide rail 9, a collision ball 10, a transmission plate 11, a rack 12, a reset spring 13a, a primary gear I, a primary gear 13b, a primary gear II, a secondary gear 14, a secondary gear 15, a working gear 16, a threaded rod 17, an energy consumption box 18, a supporting device 19, magnetorheological fluid 20a, a primary sliding frame 20b, a secondary sliding frame 20c, a tertiary sliding frame 21, a piston 22, a hydraulic pipeline 23, an excitation coil 24, a motion guide beam 25a, a primary gear 25b, a secondary gear 26, a limiting device 27 and an extension arm beam.

Detailed Description

The invention is further described with reference to the following figures and examples.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

As shown in fig. 1, the embodiment provides a multistage self-adaptive composite inertial volume vibration damping device, which specifically includes a working box 1, a mass body 2 installed inside the working box, a transmission mechanism, and a magnetorheological hydraulic energy consumption mechanism.

Wherein, the upper layer of the working box 1 consists of a mass body 2, a tuning spring 7 and a guide rail 8; the lower layer of the working box consists of a transmission mechanism and a magneto-rheological hydraulic energy consumption mechanism.

As shown in fig. 1 and 2, the mass body 2 is provided outside with the movement guide beams 24 in the X and Y directions, and the movement guide beams 24 are installed in the secondary guide rail 8b through the balls 5 so that the mass body 2 can move in both horizontal directions along the secondary guide rail 8 b.

In the concrete implementation, the quality body 2 includes a flexible box 3 that can stretch out and draw back along the Y direction, and its longitudinal section and transverse section all are the rectangle, and flexible box 3 sets up to the cuboid structure that does not contain the top surface. The telescopic box body 3 is made of a magnetic shielding material, so that the influence of an external magnetic field on an internal energy consumption device is avoided, and the stability of electromagnetic adjustment inside the device is ensured.

In the concrete implementation, telescopic box 3 is inside to set up a plurality of expansion plates 4 of placing along the Y direction, bottom, top and the side of expansion plate all install ball 5, can be at 3 inside along the X direction movements of telescopic box, connect through linkage spring 6 between the expansion plate 4, tuning spring 7 is connected to the expansion plate 4 in the outside to realize colliding the ball in the collision space self-adaptation of X direction.

Specifically, the tuning spring 7 is connected to the primary guide rail 8a through the ball 5, so that the tuning spring 7 can slide in a direction perpendicular to the axis thereof, and the mounting position of the ball 5 in the primary guide rail 8a and the mounting position of the secondary guide rail 8b are vertically staggered, thereby avoiding mutual influence. The limiting device 26 is arranged on the inner side wall of the working box 1, and the limiting device 26 has a certain length so as to ensure that the mass body 2 can play a limiting role when moving to any position; and the tail end of the limiting device is provided with rubber, so that the mass body 2 is prevented from being collided and damaged with the limiting device 26.

As shown in fig. 3 and fig. 4(a) -4 (c), the expansion plate 4 is composed of an inner plate 4a and an outer plate 4b, the inner plate 4a slides inside the outer plate 4b through the balls 5, and the expansion of the expansion plate 4 in the Y direction is realized; the bottom of the telescopic box body 3 is disconnected and provided with the ball 5, so that the telescopic box body 3 can stretch in the Y direction, and the collision space self-adaption of the collision ball 9 in the Y direction is realized.

It can be understood that, the person skilled in the art can avoid the two parts of the telescopic box body 3 from separating by reasonably designing the shape of the buckle at the disconnection part of the telescopic box body 3.

In this embodiment, the driving mechanism includes a driving plate 10, and the bottom of the driving plate 10 is fixed on the rack 11 and connected to the inner side wall of the working box 1 through a return spring 12. The transmission plate 10 is provided with a displacement sensor which is used for monitoring the displacement of the transmission plate and is connected with the magnet exciting coil 23 outside the energy consumption box through an electromagnetic control circuit.

In some embodiments, the transmission plate has a certain height to ensure that the transmission plate can collide with the mass body, and one side of the transmission plate, which is close to the mass body, is provided with a rubber material to avoid damage caused by multiple collisions between the mass body and the transmission plate; the transmission plate should have a long length, and can ensure that the mass body still can collide with the transmission plate in another direction when deviating from the center line in a certain direction.

Specifically, the rack 11 is mounted on the main gear i 13a and the main gear ii 13b, and can rotate the main gear i 13a and the main gear ii 13 b. The axes of the main gear I13 a and the main gear II 13b are arranged on an extending arm beam 27 and can rotate around the axes, and the extending arm beam 27 is fixed on the inner side wall of the work box 1. A round tube is arranged on the second main gear 13b, and the pinion 14 is fixed on the second main gear 13b through the round tube, so that the pinion 14 can cooperatively rotate along with the second main gear 13 b; the pinion 14 meshes with a working gear 15 out of the plane thereof; the working gear 15 is connected with a threaded rod 16, and the other end of the threaded rod 16 extends into the magnetorheological hydraulic energy dissipation mechanism.

As shown in fig. 5(a) -5 (b), the magnetorheological hydraulic energy consumption mechanism comprises an energy consumption box 17, the energy consumption box 17 is fixed at the bottom of the working box 1 through a supporting device 18, and the interior of the energy consumption box is filled with magnetorheological fluid 19; a multistage sliding frame 20 is arranged in the energy consumption box 17, and a piston 21 is pushed to slide along the rack 11 on the inner wall of the energy consumption box 17; the outer side wall of the energy consumption box 17 is provided with a plurality of circles of hydraulic pipelines 22, two ends of each hydraulic pipeline 22 are communicated with the inside of the energy consumption box 17, and the winding compactness of the hydraulic pipelines 22 outside the energy consumption box 17 is designed according to energy consumption requirements; the two ends of the energy consumption box 17 are provided with excitation coils 23.

In a specific implementation, the sliding frame 20 can be divided into three stages: the primary sliding frame 20a is connected with the threaded rod 16 through threads arranged at the end part and slides along the rack 11 on the inner side of the energy consumption box 17 through a primary gear 25a arranged on the frame wall, as shown in fig. 6 (a); a secondary gear 25b is mounted on the frame wall of the secondary sliding frame 20b, and a rack 11 is arranged on the outer side wall, so that the secondary sliding frame 20b can be driven to slide by the meshing of the primary gear 25a, as shown in fig. 6 (b); the outer side wall of the tertiary sliding frame 20c is provided with a rack 11, and the end is provided with a piston 21, as shown in fig. 6 (c).

Specifically, the number of the primary and tertiary slide frames 20a and 20c is fixed to 1, and the number of the secondary slide frames 20b may be 0, 1, 2, or the like.

When the number of the secondary slide frames 20b is n, the piston displacement stroke can reach n +2 times the stroke of the primary slide frame 20 a.

It should be noted that the specific number of the secondary sliding frames 20b can be designed by those skilled in the art according to the space, stroke requirement and energy consumption requirement of the energy consumption device.

In some implementations, all of the linkage spring 6, the tuning spring 7 and the return spring 12 are made of shape memory alloy springs, so that the springs can still return to the original shape after being deformed. All the balls 5 are coated with lubricating oil to ensure that the parts contacted with the balls are smooth and reduce friction.

The working principle of the multistage self-adaptive composite inertial volume vibration damper of the embodiment is as follows:

when the structure vibrates, the collision ball 9 in the mass body 2 generates initial motion in any direction along the horizontal plane in the telescopic box body 3 due to inertia; in the X direction, the collision ball 9 pushes the telescopic plates 4 to slide, the distance between the telescopic plates 4 is increased, and the collision gap is increased; in the Y direction, collision ball 9 promotes the motion of telescopic box 3 lateral wall, and telescopic box 3 expandes in coordination with expansion plate 4, and the collision clearance increases. Since the upper and lower portions of the sidewall of the mass body 2 are respectively provided with the guide rails 8 in different directions, when the movement of the collision ball 9 is further expanded, the collision ball 9 and the expansion plate 4 can push the expansion box body 3 to move in any horizontal direction.

When the motion range of the mass body 2 reaches the position of the transmission plate 10, the side wall of the mass body 2 pushes the transmission plate 10 to move. The movement of the transmission plate 10 drives the rack 11 to transmit, thereby driving the main gear I13 a and the main gear II 13b to rotate. The main gear II 13b and the pinion 14 are fixedly connected through a circular tube, so that the pinion 14 and the main gear II 13b rotate in cooperation. The pinion 14 rotates an out-of-plane working gear 15 that meshes with it, thereby rotating a threaded rod 16. The threaded rod 16 is meshed with the first-stage sliding frame 20a through threads, the rotation is converted into the sliding of the first-stage sliding frame 20a along the rack 11 in the energy consumption box 17, and meanwhile, the first-stage gear 25a is meshed with the rack 11 on the outer side of the second-stage sliding frame 20b to drive the second-stage sliding frame 20b to slide. When the second-stage sliding frame 20b slides, the second-stage gear 25b mounted on the side wall thereof drives the third-stage sliding frame 20c to slide by engaging with the rack 11 on the outer side of the third-stage sliding frame 20c, thereby driving the piston 21 to move. Through the meshing of the gear 25 and the rack 11 between the sliding frames 20, the displacement of the piston 21 can reach three times of the movement displacement of the first-stage sliding frame 20a, and the deformation amplification effect of the inertial volume element is realized.

When the piston 21 moves, the magnetorheological fluid 19 in the energy consumption tank 17 is pushed to flow, and the inner diameter of the energy consumption tank 17 is far larger than that of the hydraulic pipeline 22, so that when the magnetorheological fluid 19 is extruded into the hydraulic pipeline 22, the velocity of the fluid in the hydraulic pipeline 22 is amplified compared with that of the piston 21, and a hydraulic inertia capacity mechanism is formed. The displacement sensor arranged on the driving plate 10 monitors the moving condition of the driving plate 10, and adjusts the magnetic field intensity generated by the exciting coil 23 through an electromagnetic control circuit, so that the damping size of the magnetorheological fluid 19 is changed in real time, and the energy consumption level of the energy consumption box 17 is adjusted to be adaptive to the energy consumption requirement.

After the vibration is finished, the mass body 2 returns to the original position under the action of the guide rail 8 and the tuning spring 7, the arrangement of the telescopic plates 4 returns to the initial position under the action of the linkage spring 6, the transmission plate 10 returns to the original position under the action of the return spring 12, the magnetorheological fluid 19 returns to the flowing state, and the whole vibration damper is in the original state.

The vibration suppression device is arranged at the position with the maximum vibration response under the corresponding mode of the controlled structure, and can effectively suppress multi-dimensional poor vibration of a high-rise or large-span structure. Good vibration reduction effect is realized through self-adaptation and self-adjustment of the device; meanwhile, the effective deformation of the internal magneto-rheological hydraulic energy consumption mechanism is amplified through the composite inertial capacity system, the internal space of the vibration damper is optimized, the effects of energy consumption and efficiency improvement are achieved, and the composite inertial capacity system has high economical efficiency and practicability.

The multistage self-adaptive composite inertial volume vibration damper of the embodiment has the following characteristics:

(1) "multistage" control:

first-level control, when the vibration amplitude of the controlled structure is small, the kinetic energy of the mass body is not enough to enable the mass body to collide with the transmission plate, and at the moment, the energy consumption is controlled passively through self-adaptive energy consumption of the collision gap of the collision ball;

and secondary control, namely when the vibration amplitude of the controlled structure is larger, the kinetic energy of the mass body is larger, the mass body collides with the transmission plate, a magnetorheological hydraulic energy consumption mechanism is started, and the energy consumption realizes hybrid control combining passive control and semi-active control through self-adaptive collision and magnetorheological hydraulic pressure.

(2) "adaptive":

collision energy consumption self-adaptation, when the vibration amplitude of the controlled structure is increased from small to small, the kinetic energy of the collision ball in the mass body is increased, the required optimal collision clearance is also increased, and the collision clearance adapting to different vibration conditions can be realized through the arrangement of the telescopic box body, the telescopic plate and the linkage spring;

magneto-rheological hydraulic energy consumption self-adaptation, namely a displacement sensor on a transmission plate can control the damping of magneto-rheological fluid through the response of a structure, so that the self-adjustment of a magneto-rheological hydraulic energy consumption mechanism is realized.

(3) "composite inerter":

the combination of a sliding frame, an energy consumption box and a gear and a rack between the sliding frame in the magneto-rheological hydraulic energy consumption mechanism amplifies the effective deformation of a piston to form an inertial volume mechanism; the inner diameter of the energy consumption box is far larger than that of the hydraulic pipeline, and the fluid speed in the hydraulic pipeline is amplified compared with the piston speed, so that a hydraulic inertia capacity mechanism is formed.

In another embodiment, a structure is also provided, which comprises the multistage adaptive composite inerter damping device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A multistage self-adaptive composite inertial volume vibration damper is characterized by comprising a working box, a mass body, a transmission mechanism and a magnetorheological hydraulic energy consumption mechanism, wherein the mass body, the transmission mechanism and the magnetorheological hydraulic energy consumption mechanism are arranged in the working box;

the mass body comprises a telescopic box body capable of moving along the Y direction, a plurality of telescopic plates which are placed along the Y direction and can move along the X direction are arranged in the telescopic box body, the telescopic plates are connected through a linkage spring, and the telescopic plate on the outermost side is connected with the primary guide rail through a tuning spring so as to realize self-adaptive collision of collision balls between the telescopic plates in the X direction;

the magnetorheological hydraulic energy dissipation mechanism comprises an energy dissipation box, wherein the energy dissipation box is provided with a multi-stage sliding frame and a piston, the magnetorheological fluid is filled in the energy dissipation box, the piston can slide along a rack on the inner wall of the energy dissipation box, and excitation coils are arranged at two ends of the energy dissipation box;

the transmission mechanism comprises a transmission plate, the bottom of the transmission plate is fixed on the rack, and the transmission plate is connected to the inner side wall of the working box through a return spring; and the transmission plate is also provided with a displacement sensor for monitoring the displacement of the transmission plate and is connected with the excitation coil through an electromagnetic control circuit.

2. The multi-stage adaptive composite inerter damping device according to claim 1, wherein balls are mounted on the bottom, top and sides of the expansion plate.

3. The multi-stage adaptive composite inerter vibration damping device as claimed in claim 2, wherein the mass body is provided at its outer side with a moving guide beam capable of moving in the X and Y directions, and the moving guide beam is mounted in the secondary guide rail by means of balls so that the mass body can move in both horizontal directions along the secondary guide rail.

4. The multistage adaptive composite inerter vibration damper according to claim 2, wherein the tuning spring is connected to the primary guide rail through a ball, so that the tuning spring can slide in a direction perpendicular to the axis thereof, and the mounting position of the ball in the primary guide rail is offset from the mounting position of the secondary guide rail.

5. The multi-stage adaptive composite inerter vibration damping device as claimed in claim 1, wherein a limiting device is mounted on the inner side wall of the working box, and the limiting device has a set length to ensure that the mass body can be limited when moving to any position.

6. The multi-stage adaptive composite inerter damping device as claimed in claim 5, wherein rubber is disposed at the end of the position-limiting device to prevent the mass from colliding with the position-limiting device and being damaged.

7. The multi-stage adaptive composite inerter damping device according to claim 1, wherein the sliding frame is divided into three stages: the first-stage sliding frame is connected with the threaded rod through threads arranged at the end part of the first-stage sliding frame and slides along the rack on the inner side of the energy consumption box through a first-stage gear arranged on the wall of the first-stage sliding frame; the frame wall of the secondary sliding frame is provided with a secondary gear, and the outer side wall of the secondary sliding frame is provided with a rack which can drive the secondary sliding frame to slide by the meshing of the primary gear; the outer side wall of the three-stage sliding frame is provided with a rack, and the end part of the three-stage sliding frame is provided with a piston.

8. The multi-stage adaptive composite inerter damping device according to claim 7, wherein the number of the first-stage sliding frame and the third-stage sliding frame is 1; when the number of the secondary sliding frames is n, the displacement stroke of the piston can reach n +2 times of the stroke of the primary sliding frame, and n is an integer.

9. A method of operating a multi-stage adaptive composite inerter damping device according to any of claims 1-8, comprising:

when the structure vibrates, the collision ball inside the mass body generates initial motion in any direction along the horizontal plane inside the telescopic box body due to inertia; in the X direction, the collision ball pushes the telescopic plates to slide, the distance between the telescopic plates is increased, and the collision gap is increased; in the Y direction, the collision ball pushes the side wall of the telescopic box body to move, the telescopic box body is unfolded in cooperation with the telescopic plate, and the collision gap is increased;

when the motion range of the mass body reaches the position of the transmission plate, the side wall of the mass body pushes the transmission plate to move, and the motion of the transmission plate drives the rack to transmit, so that the corresponding gear is driven to rotate, the sliding frame of the corresponding grade is driven to slide, and finally the piston is driven to move;

when the piston moves, the magnetorheological fluid in the energy consumption box is pushed to flow to form a hydraulic inerter mechanism, a displacement sensor arranged on a transmission plate monitors the movement condition of the transmission plate, the magnetic field intensity generated by an excitation coil is adjusted through an electromagnetic control circuit, the damping magnitude of the magnetorheological fluid is changed in real time, and the energy consumption level of the energy consumption box is adjusted to be adaptive to the energy consumption requirement;

after the vibration is finished, the mass body returns to the original position under the action of the guide rail and the tuning spring, the arrangement of the telescopic plates returns to the original position under the action of the linkage spring, the transmission plate returns to the original position under the action of the reset spring, the magnetorheological fluid returns to the flowing state, and the whole vibration damper is in the original state.

10. A structure comprising a multi-stage adaptive composite inerter damping device according to any of claims 1 to 8.

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