A three-dimensional pendulum tuned liquid inerter device

Abstract

The present application relates to a kind of three-dimensional pendulum tuning liquid inductance device, the inductance device includes tuning liquid column damper and tuning mass inductance container, tuning liquid column damper includes swing arm, ball hinge end head, swing arm connector, annular water tank and tuning liquid, swing arm one end is connected with ball hinge end head, the other end is connected with annular water tank by swing arm connector, tuning liquid is filled in annular water tank;Tuning mass inductance container is installed in the lower portion of tuning liquid column damper, ball hinge end head is connected with the structure to be damped, annular water tank swings and drives tuning mass inductance container to carry out energy consumption, the inductance device tuning period is adjustable.Compared with prior art, the present application has can control the vibration in each direction of the structure to be controlled, wide range of use;The parameters of each component can be flexibly adjusted to achieve the best damping effect, while tuning mass inductance container can realize the energy absorption of input structure with smaller space and achieve the two goals of energy dissipation and reduction of upper tuning liquid mass.

Description

TECHNICAL FIELD

[0001] The present application relates to a liquid inertial device, in particular to a three-dimensional pendulum tuned liquid inertial device. BACKGROUND

[0002] There are various kinds of vibration reduction devices, which are widely used. At present, there are many kinds of tuned vibration reduction devices, such as tuned mass damper (TMD), tuned liquid damper (TLD), pendulum tuned mass damper (PTMD) and pendulum tuned liquid damper (PTLD). However, the traditional tuned vibration reduction device has a series of problems: a large installation space is needed to achieve good control effect, which reduces the use space of the structure; the robustness is poor, and the natural frequency of the device needs to be well designed to avoid being out of tune with the structure; the required mass for tuning is large, resulting in poor economy of the device.

[0003] Through retrieval, the application publication number CN109267808A discloses a tuned liquid type inertial system, which specifically discloses that the device includes a double vibration reduction tuning mechanism, a tuned liquid mass unit and a tuned inertial limiting unit are used to adjust the system frequency and perform vibration reduction control; a double energy storage mechanism is established, and an energy dissipation mechanism based on friction movement and liquid nonlinear sloshing is established.

[0004] However, the system cannot control the vibration in multiple directions of the structure, and the parameters of the system cannot be adjusted to ensure the best vibration reduction effect. Therefore, an inertial device capable of controlling vibration in multiple directions and adjustable parameters becomes a technical problem to be solved. SUMMARY

[0005] The purpose of the present application is to overcome the defects of the prior art and provide a three-dimensional pendulum tuned liquid inertial device.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] According to one aspect of the present application, a three-dimensional pendulum tuned liquid inertial device is provided, which has an adjustable tuning period. The inertial device includes a tuned liquid column damper and a tuned mass inertial container. The tuned liquid column damper includes a pendulum arm, a spherical hinge end head, a pendulum arm connector, a ring-shaped water tank and a tuned liquid. One end of the pendulum arm is connected to the spherical hinge end head, and the other end is connected to the ring-shaped water tank through the pendulum arm connector. The tuned liquid is filled in the ring-shaped water tank. The tuned mass inertial container is installed at the lower part of the tuned liquid column damper, which includes an end plate and an elastic element and is provided with a spherical hinge end head support at the bottom. The whole is a hollow structure. The spherical hinge end head is connected to the structure to be damped. When the ring-shaped water tank swings, the tuned mass inertial container is driven to dissipate energy.

[0008] As a preferred technical scheme, the tuned mass inerter further comprises a ball screw inerter component, the end plate comprises a first end plate and a second end plate, and the elastic element comprises a first spring and a second spring.

[0009] As a preferred technical scheme, the first end plate and the second end plate are connected through the first spring, and the first spring is at least two, and the first end plate, the second end plate and the first spring form a cavity.

[0010] As a preferred technical scheme, the ball screw inerter component comprises a ball screw, a nut, an internal flywheel, a plane bearing and viscous damping liquid, one end of the ball screw passes through the first end plate and penetrates into the ball screw inerter component, and the other end is provided with a spherical hinge end head.

[0011] As a preferred technical scheme, the ball screw inerter component is connected to the second end plate through the second spring at one end of the ball screw which does not penetrate the ball screw, and the second spring is located in the cavity of the ball screw inerter component and is at least two.

[0012] As a preferred technical scheme, the ball screw inerter component is connected to the second end plate through the second spring at one end of the ball screw which does not penetrate the ball screw, and the second spring is located in the cavity of the ball screw inerter component and is at least two.

[0013] As a preferred technical scheme, the tuning period of the device is:

[0014]

[0015] Wherein, L is the length of the swing arm, m t is the mass of the tuning liquid, m in is the mass of the internal flywheel, k t is the stiffness of the first spring, k in is the stiffness of the second spring, and the tuning period is adjusted by adjusting each parameter.

[0016] As a preferred technical scheme, the second end plate is provided with a spherical hinge end head support connected to another part of the structure to be damped or the ground.

[0017] As a preferred technical scheme, the lower part of the annular water tank is provided with a spherical hinge end head support, and the tuned mass inerter is installed at the lower part of the annular water tank through the spherical hinge end head support.

[0018] As a preferred technical scheme, the tuned mass inerter has three in total and is installed at equal intervals in a circle.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1) The three-dimensional tuning liquid inerter device of the present application can control the vibration of the structure to be controlled in each direction, and has a wide range of use;

[0021] 2) The present application can flexibly adjust the length of the swing rod, the density of the tuning liquid, the spring stiffness and the built-in flywheel mass, realize the adjustable tuning period of the device, and then realize the best damping effect, and the existence of the tuning mass in the device can realize the absorption of the input structure energy and dissipate and reduce the upper tuning liquid mass two goals with small space;

[0022] 3) The present application has better robustness than the traditional pendulum tuning device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the three-dimensional pendulum tuning liquid inductor device of the present application;

[0024] Figure 2 It is a working state schematic diagram of the three-dimensional pendulum tuning liquid inductor device of the present application;

[0025] Figure 3 It is a structural schematic diagram of the tuning mass inductor;

[0026] Figure 4 It is a schematic diagram of the swing arm connector and swing arm connection of the present application;

[0027] Figure 5 It is a structural schematic diagram of the ring-shaped water tank of the present application;

[0028] Figure 6 It is a schematic diagram of the distribution of the ball hinge support at the bottom of the ring-shaped water tank of the present application;

[0029] Figure 1 Indicated by reference numerals:

[0030] 10, swing arm, 11, ball hinge end, 12, swing arm connector, 13, ring-shaped water tank, 14, tuning liquid, 2, tuning mass inductor, 23, ball hinge end support;

[0031] Figure 3 Indicated by reference numerals:

[0032] 20, ball screw inductor component, 200, viscous damping liquid, 201, ball screw, 202, nut, 203, built-in flywheel, 204, plane bearing, 210, first end plate, 211, second end plate, 220, first spring, 221, second spring. DETAILED DESCRIPTION

[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 relates to a three-dimensional pendulum-type tuned liquid inertial capacity device, comprising a tuned liquid column damper (PTLCD) and a tuned mass inertial container 2, such as... Figure 1 As shown, the tuned liquid column damper includes a swing arm 10, a ball joint end 11, a swing arm connector 12, an annular water tank 13, and a tuning liquid 14.

[0035] The ball joint end 11 is connected to the structure to be vibration-damped.

[0036] One end of the swing arm 10 is connected to the ball joint end 11, and the other end is connected to the annular water tank 13 via the swing arm connector 12. Figure 4 As shown, the ball joint end 11 allows the swing arm 10 to rotate arbitrarily within a certain range.

[0037] like Figure 5 As shown, the tuning liquid 14 is contained in the annular water tank 13.

[0038] like Figure 3 As shown, the tuned mass inertia container 2 includes a ball screw inertia container component 20, an end plate, and a spring. The end plate includes a first end plate 210 and a second end plate 211, and the spring includes a first spring 220 and a second spring 221.

[0039] The first end plate 210 and the second end plate 211 are connected by a first spring 220. There are at least two first springs 220. The ball screw inertia component 20 is located in the cavity formed by the first end plate 210, the second end plate 211 and the first spring 220.

[0040] The ball screw inertia-containment component 20 includes a ball screw 201, a nut 202, an internal flywheel 203, a plane bearing 204, and a viscous damping fluid 200. One end of the ball screw 201 is located inside the ball screw inertia-containment component 20, and the other end is provided with a ball joint end 11, which passes through the ball screw inertia-containment component 20 and the first end plate 210 and is connected to the ball joint end support 23 at the bottom of the annular water tank.

[0041] Nut 202 is matched with ball screw, and plane bearing 204 is used to fix nut 202 so that it can rotate freely in the plane.

[0042] The end of the ball screw inertia component 20 without the ball screw 201 protruding is connected to the second end plate 211 via a second spring 221, and there are at least two second springs 221.

[0043] The second end plate 211 is provided with a spherical hinge end support 23.

[0044] As shown in the drawings, the annular water tank 13 is provided with a spherical hinge end support 23, and the spherical hinge end support 23 is three, which are arranged uniformly in the circumference, and the tuned mass inerter 2 is installed at the lower part of the annular water tank 13 through the spherical hinge end support 23. The spherical hinge end support 23 is used to realize the function that the device can control multi-directional vibration. Figure 6

[0045] When the three-dimensional pendulum tuned liquid 14 inerter device is installed, one end is connected with the structure to be damped through the spherical hinge end head 11, and the other end can be connected to another part of the structure to be damped or connected with the ground.

[0046] As shown in the drawings, when the three-dimensional pendulum tuned liquid 14 inerter device works, the structure to be damped vibrates, the annular water tank 13 and the tuned liquid 14 in it start to swing, and then drive the lower tuned mass inerter system to deform and move, the end plate reciprocates, drives the ball screw 201 and the spring to move, the ball screw 201 movement drives the nut 202 and the built-in flywheel 203 to rotate, and at the same time, the built-in flywheel 203 cuts the viscous damping liquid 200 to dissipate energy when rotating; the three tuned mass inerter devices 2 installed at the bottom of the annular water tank 13 control the vibration in any direction of the structure. The device provides the functions of adjusting the frequency of the structure and damping energy dissipation. Figure 2 The three-dimensional pendulum tuned liquid 14 inerter device provided by the application can adjust various parameters of the device when it is implemented. For example, the tuning period of the traditional pendulum tuned mass damper is

[0047] The tuning period of the three-dimensional pendulum tuned liquid 14 inerter device provided by the application is:

[0048]

[0049] Wherein, L is the length of the pendulum arm 10, m t is the mass of the tuned liquid 14, m in is the mass of the built-in flywheel 203, k t is the stiffness of the first spring 220, k in is the stiffness of the second spring 221, the above parameters can be adjusted to obtain the optimal tuning frequency of the device.

[0050] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.​​

Claims

1. A three-dimensional pendulum-type tuned liquid inertial volume device, characterized in that, The tuning period of the inertial capacity device is adjustable. The inertial capacity device includes a tuned liquid column damper and a tuned mass inertial container (2). The tuned liquid column damper includes a swing arm (10), a ball joint end (11), a swing arm connector (12), an annular water tank (13), and a tuning liquid (14). One end of the swing arm (10) is connected to the ball joint end (11), and the other end is connected to the annular water tank (13) through the swing arm connector (12). The tuning liquid (14) is installed in the annular water tank (13). The tuned mass inertial container (2) is installed at the lower part of the tuned liquid column damper. It includes an end plate and an elastic element and a ball joint end support (23) on the bottom surface. The whole structure is a cavity structure. The ball joint end (11) is connected to the structure to be damped. When the annular water tank (13) swings, it drives the tuned mass inertial container (2) to dissipate energy. The tuned mass inertia container (2) further includes a ball screw inertia container component (20), the end plate includes a first end plate (210) and a second end plate (211), and the elastic element includes a first spring (220) and a second spring (221). The first end plate (210) and the second end plate (211) are connected by a first spring (220), and there are at least two first springs (220). The first end plate (210), the second end plate (211) and the first spring (220) form a cavity. The ball screw inertia component (20) includes a ball screw (201), a nut (202), an internal flywheel (203), a plane bearing (204), and a viscous damping fluid (200). One end of the ball screw (201) passes through the first end plate (210) and enters the ball screw inertia component (20), and the other end is provided with a ball joint end (11). The tuning period of this device is: in, The length of the swing arm (10) To adjust the mass of the liquid (14), For the mass of the built-in flywheel (203), Let the stiffness of the first spring (220) be... The stiffness of the second spring (221) is given by the tuning period, which is adjusted by adjusting various parameters.

2. The three-dimensional pendulum-type tuned liquid inertial volume device according to claim 1, characterized in that, The end of the ball screw inertia component (20) that does not pass through the ball screw (201) is connected to the second end plate (211) by a second spring (221), and the second spring (221) is located in the cavity of the ball screw inertia component (20) and there are at least two of them.

3. The three-dimensional pendulum-type tuned liquid inertial volume device according to claim 1, characterized in that, The ball screw (201) drives the nut (202) and the built-in flywheel (203) to rotate. The built-in flywheel (203) cuts the viscous damping fluid (200) to consume energy when rotating.

4. The three-dimensional pendulum-type tuned liquid inertial volume device according to claim 1, characterized in that, The second end plate (211) is provided with a ball joint end support (23), which is connected to another part of the structure to be vibration reduced or to the ground.

5. A three-dimensional pendulum-type tuned liquid inertial volume device according to claim 1, characterized in that, The annular water tank (13) is provided with a ball joint end support (23) at the bottom, and the tuned mass inertia container (2) is installed at the bottom of the annular water tank (13) through the ball joint end support (23).

6. A three-dimensional pendulum-type tuned liquid inertial volume device according to claim 5, characterized in that, There are three tuned mass inertia containers (2), which are evenly distributed around the circumference.

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