CN211951306U

CN211951306U - Particle damping inertial volume system adopting roller design

Info

Publication number: CN211951306U
Application number: CN202020151666.8U
Authority: CN
Inventors: 谢丽宇; 濮昱; 薛松涛
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2020-02-04
Filing date: 2020-02-04
Publication date: 2020-11-17
Anticipated expiration: 2030-02-04

Abstract

A particle damping inertial container system adopting a roller design is characterized by comprising a frame, a bottom plate, a gear, a container, a limiting shaft and a spring; the frame comprises racks and a cross beam, and the two racks are arranged in parallel and connected by the cross beam in the width direction; the bottom plate comprises a slide rail and a bracket; the bottom of the bottom plate is provided with a bolt hole for fixing the bottom plate with the ground; limiting slide rails are arranged on two sides of the bottom plate, and the racks are installed in the limiting slide rails and are limited to slide along the direction of the slide rails; the bracket is higher than the slide rail and is used for reserving an installation position; the gear body is rigidly connected with the cylindrical container and is meshed with the rack; the gear and the container are coaxial with the limiting shaft and are arranged on the brackets at two sides of the bottom plate through the limiting shaft; the gear coincides with the axis of the cylindrical container, and the limiting shaft is coaxial with the cylindrical container and the gear to limit the translation of the gear container system, and the like. The application combines the advantages of the two to achieve the best vibration control effect.

Description

Particle damping inertial volume system adopting roller design

Technical Field

The present application relates to the field of vibration isolation.

Background

The inertial volume damper is used as a novel efficient structure passive vibration control means, is an energy dissipation and vibration reduction device made of damping, and has the advantages of non-contact, no mechanical friction and loss, no need of lubrication, long service life, easiness in installation and the like.

The rack and pinion type inerter is a form of inerter which is widely used nowadays, the inerter is like a spring and a damper in a mechanical system, and the device does not need to be a reference system of an inertial coordinate system and is a real two-end element. In a new electromechanical simulation theory, the device is adopted to replace the traditional mass element, so that the elements simulated in the mechanical system and the circuit system are strictly equal, and the difficulty in the application of the electromechanical simulation theory is solved. In this device, the rack can be moved in a translatory manner, and the rack is engaged with the gear. The working principle is that the rack and the gear can be regarded as two end points of the inertial container, and when a pair of external forces act on the two end points oppositely, the rack drives the gear and the flywheel which are meshed with each other to rotate. The device can be widely applied to the technical field of vibration isolation, such as the vibration isolation in the directions of vehicle suspension, train suspension and building vibration prevention, dynamic mechanical vibration absorption and the like.

Among various damping forms, the particle damper which realizes momentum exchange and structural energy dissipation through inelastic collision and friction between particle-structure particles has the advantages of small change to the original system, high reliability, good durability, insensitivity to temperature change, easy application in severe environment and the like, and is valued by vast civil engineering researchers. Meanwhile, a tuned liquid damper is a well-developed passive control device in the recent years, and provides a damping force by using a pressure generated when a liquid is shaken.

Disclosure of Invention

The application aims to overcome the defects of the prior art and discloses a particle damping inertial volume system adopting a roller design. The existing gear and rack type inerter is improved, a container filled with damping liquid and particle units is placed in a gear main body to provide damping, and meanwhile, the displacement amplification effect and the tuning effect of an original inerter system are kept. This application combines together both advantages, designs one kind and utilizes the damped rack and pinion of granule to be used to the container to reach best vibration control effect.

In order to achieve the above object, the present application provides the following technical solutions:

a particle damping inertial container system adopting a roller design is characterized by comprising a frame 1, a bottom plate 8, a gear 2, a container 3, a limiting shaft 7 and a spring 9;

the frame 1 comprises racks 11 and a beam 12, wherein the two racks 11 are arranged in parallel and connected by the beam 12 in the width direction;

the bottom plate 8 comprises a slide rail 82 and a bracket 83; the bottom of the bottom plate 8 is provided with a bolt hole 81 for fixing with the ground; two sides of the bottom plate 8 are provided with limiting slide rails 82, the rack 11 is installed in the limiting slide rails 82, and the rack 11 is limited to slide along the direction of the slide rails 82; the bracket 83 is higher than the slide rail 82 and is used for reserving an installation position;

the main body of the gear 2 is rigidly connected with the cylindrical container 3 and is meshed with the rack 11; the gear 2 and the container 3 are coaxial with the limiting shaft 7 and are arranged on the brackets 83 at two sides of the bottom plate 8 through the limiting shaft 7; the gear 2 is superposed with the axis of the cylindrical container 3, and the limiting shaft 7 is coaxial with the cylindrical container 3 and the gear 2 to limit the translation of the gear container system;

the spring 9 is connected to the beam 12 of the frame 1, the extending end of the spring 9 is externally connected to an outer wall, when vibration occurs, relative displacement occurs between the ground and the wall surface, so that the rack 11 drives the gear 2 to rotate, and the frame 1 is connected with the spring 9 through the beam 12 to play a role in tuning and energy consumption.

The key technical points of the application are as follows:

(1) the translation is converted into rotation by the motion conversion form of the gear rack inerter, and the rotation is amplified by the flywheel in the form of a container, so that a good displacement amplification effect is achieved.

(2) The particle damper consumes energy through friction between particles and damping liquid and collision with a buffer material when the particles rotate along with the container, and has a clear energy consumption mechanism and a good effect.

(3) This device simple manufacture, the installation of being convenient for, all kinds of subassemblies that relate, including gear, container, buffer material, damping liquid, granule unit etc. all can replace according to actual engineering requirement, have fine flexibility and maintainability.

(4) The device adopts a roller form, changes the original linear frequency modulation into non-linearity, and changes the narrow-band frequency modulation into the wide-band frequency modulation, so that the frequency modulation performance is more flexible.

Drawings

FIG. 1 is one of the axially exploded views

FIG. 2 is a side view of the device in partial cross-section

FIG. 3 is a schematic cross-sectional view of a container

The device comprises a frame 1, a rack 11, a cross beam 12, a bottom plate 8, bolt holes 81, a slide rail 82, a bracket 83, a gear 2, a container 3, a limiting shaft 7 and a spring 9;

damping liquid 4, particle units 5, buffer material 6.

Detailed Description

A particle damping inertial container system adopting a roller design is characterized by comprising a frame 1, a bottom plate 8, a gear 2, a container 3, a limiting shaft 7 and a spring 9,

The base plate 10 is rigidly connected to the ground and is typically made of steel.

Further, a magnetic sleeve can be installed in the middle of the gear 2 to ensure that the gear 2 is tightly meshed with the rack 1.

Buffer material 6, damping liquid 4, particle unit 5:

further, the container 3 is generally cylindrical, a plurality of ribs are radially distributed on the inner side of the container 3, the material of the ribs can be metal, plastic and the like, a buffer material 6 is pasted inside the container, and the material of the buffer material 6 can be rubber, foamed plastic, sponge and the like by way of example and not limitation.

Further, the container is filled with a certain amount of damping liquid 4, and the damping liquid 4 may be any one of water and oil.

Further, the particle units 5 are uniformly distributed in the damping fluid 4, and the material thereof is generally a material with a good coefficient of restitution, such as steel.

Compared with the prior art, the method has the following advantages:

(1) compared with the traditional gear rack inertial container, the flywheel is replaced by the particle damper, an energy consumption mechanism is added on the basis of the original tuning function, and the integration of tuning and energy consumption is realized.

(2) The displacement amplification effect of the gear rack inerter ensures that the friction between particles and liquid and the collision between the particles and a buffer material are more violent, a larger energy consumption effect can be generated under smaller excitation, and the energy consumption capability of the particle damping unit is improved. Meanwhile, due to the increase of the reciprocating stroke, the particles can move in the form of particle flow earlier, and the nonlinear characteristic of the particles is reduced to a certain extent.

(3) In the process of rotating the container, the damping particles, the damping liquid and the container are driven to rotate, and the flywheel similar to the flywheel in the inertial container plays a role in amplifying the mass.

(4) The device is convenient to manufacture and install, the components can be replaced and adjusted, and the device has good replaceability and maintainability.

Claims

1. A particle damping inertial container system adopting a roller design is characterized by comprising a frame (1), a bottom plate (8), a gear (2), a cylindrical container (3), a limiting shaft (7) and a spring (9);

the frame (1) comprises racks (11) and a cross beam (12), wherein the two racks (11) are arranged in parallel and connected by the cross beam (12) in the width direction;

the bottom plate (8) comprises a slide rail (82) and a bracket (83); the bottom of the bottom plate (8) is provided with a bolt hole (81) for fixing with the ground; limiting sliding rails (82) are arranged on two sides of the bottom plate (8), the rack (11) is installed in the limiting sliding rails, and the rack (11) is limited to slide along the directions of the sliding rails (82); the bracket (83) is higher than the sliding rail (82) and is used for reserving an installation position;

the main body of the gear (2) is rigidly connected with the cylindrical container (3) and is meshed with the rack (11); the gear (2) and the cylindrical container (3) are coaxial with the limiting shaft (7) and are arranged on the brackets (83) at two sides of the bottom plate (8) through the limiting shaft (7); the gear (2) is superposed with the axis of the cylindrical container (3), and the limiting shaft (7) is coaxial with the cylindrical container (3) and the gear (2) to limit the translation of the gear container system;

spring (9) are connected on crossbeam (12) of frame (1), and the extension end of spring (9) is external on the wall, and when the vibration took place, ground and wall took place relative displacement to make rack (11) drive gear (2) rotatory, frame (1) are through crossbeam (12) connecting spring (9), play harmonious and power-consuming effect.