Translation-rotation hybrid vibration control system for buildings

Abstract

There is provided a translation-rotation hybrid vibration control system for buildings, which includes a translation control unit and a rotation control unit. The translation control unit is provided on an external building structure. The rotation control unit is provided above the translation control unit. The translation control unit includes a fixed base, a first track plate, a first movable plate, a second track plate and a second movable plate. The rotation control unit includes a force-transfer base, a drive, a reducer, an output shaft, a rotary plate and a flange.

Claims

1. A translation-rotation hybrid vibration control system for buildings, comprising a translation control unit and a rotation control unit; wherein the translation control unit is provided on an external building structure; and the rotation control unit is provided above the translation control unit; the translation control unit comprises a fixed base, a first track plate, a first movable plate, a second track plate and a second movable plate; a first main guide rail is provided on the first track plate; a first auxiliary guide rail and a third auxiliary guide rail are respectively provided at two sides of the first main guide rail; a second main guide rail is provided on the second track plate; and a second auxiliary guide rail and a fourth auxiliary guide rail are respectively provided at two sides of the second main guide rail; a first slider is provided on a bottom surface of the first movable plate to cooperate with the first main guide rail; and a second slider is provided on a bottom surface of the second movable plate to cooperate with the second main guide rail; the first track plate is provided on the fixed base; and the first track plate and the first movable plate cooperate with each other through the first slider; the second track plate is fixed on the first movable plate; the second main guide rail is perpendicular to the first main guide rail; and the second track plate and the second movable plate cooperate with each other through the second slider; the rotation control unit comprises a force-transfer base, a drive, a reducer, an output shaft, a rotary plate and a flange; and the force-transfer base is fixed above the second movable plate; the drive is fixed on the force-transfer base; and the drive is a stepping motor or a servo motor; the reducer is fixed on the drive, and is connected to the output shaft; and the output shaft is connected to the rotary plate via the flange.

2. The translation-rotation hybrid vibration control system of claim 1, wherein two ends of the first track plate are respectively provided with a stop block to limit the range of motion of the first movable plate; and two ends of the second track plate are respectively provided with a stop block to limit the range of motion of the second movable plate.

3. The translation-rotation hybrid vibration control system of claim 1, wherein a first coil and a first permanent magnet are provided in the first main guide rail; a second coil is provided in the first slider; and the first slider is movable in the first main guide rail by means of the first coil, the first permanent magnet and the second coil; and a third coil and a second permanent magnet are provided in the second main guide rail; a fourth coil is provided in the second slider; and the second slider is movable in the second main guide rail by means of the third coil, the second permanent magnet and the fourth coil.

4. The translation-rotation hybrid vibration control system of claim 1, wherein a grating ruler is provided in the first auxiliary guide rail and the second auxiliary guide rail, respectively, to measure and output a linear displacement of the first movable plate or the second movable plate.

5. The translation-rotation hybrid vibration control system of claim 1, wherein a plurality of positioning holes are provided at a bottom of the third auxiliary guide rail and a bottom of the fourth auxiliary guide rail, respectively; and the positioning holes are in alignment along the third auxiliary guide rail and the fourth auxiliary guide rail, respectively.

6. The translation-rotation hybrid vibration control system of claim 1, wherein the rotary plate is a disc or a ring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of a translation-rotation hybrid vibration control system for buildings according to the present application.

(2) FIG. 2 is a front view of the translation-rotation hybrid vibration control system for buildings according to the present application.

(3) FIG. 3 is a schematic diagram of a translation control unit.

(4) FIG. 4 is a schematic diagram of a first track plate.

(5) FIG. 5 is a schematic diagram of a second track plate.

(6) In the drawings: 100, translation control unit; 200, rotation control unit; 1, fixed base; 2, first track plate; 21, first main guide rail; 211, first coil; 212, first permanent magnet; 22, first auxiliary guide rail; 23, third auxiliary guide rail; 3, first movable plate; 31, first slider; 311, second coil; 4, second track plate; 41, second main guide rail; 411, third coil; 412, second permanent magnet; 42, second auxiliary guide rail; 43, fourth auxiliary guide rail; 5, second movable plate; 51, second slider; 511, fourth coil; 6, force-transfer base; 7, drive; 8, reducer; 9, output shaft; 10, rotary plate; 11, flange; 12, stop block; 13, cut-off device; 14, grating ruler; and 15, positioning holes.

DETAILED DESCRIPTION OF EMBODIMENTS

(7) This application is further described below with reference to the accompanying drawings.

(8) As shown in FIGS. 1-5, the present application provides a translation-rotation hybrid vibration control system for buildings, including a translation control unit 100 and a rotation control unit 200; where the translation control unit 100 is provided on an external building structure; and the rotation control unit 200 is provided above the translation control unit 100;

(9) the translation control unit 100 includes a fixed base 1, a first track plate 2, a first movable plate 3, a second track plate 4 and a second movable plate 5;

(10) a first main guide rail 21 is provided on the first track plate 2; a first auxiliary guide rail 22 and a third auxiliary guide rail 23 are respectively provided at two sides of the first main guide rail 21; a second main guide rail 41 is provided on the second track plate 4; and a second auxiliary guide rail 42 and a fourth auxiliary guide rail 43 are respectively provided at two sides of the second main guide rail 41;

(11) a first slider 31 is provided on a bottom surface of the first movable plate 3 to cooperate with the first main guide rail 21; and a second slider 51 is provided on a bottom surface of the second movable plate 5 to cooperate with the second main guide rail 41;

(12) the first track plate 2 is provided on the fixed base 1; and the first track plate 2 and the first movable plate 3 cooperate with each other through the first slider 31;

(13) the second track plate 4 is fixed on the first movable plate 3; the second main guide rail 41 is perpendicular to the first main guide rail 21; and the second track plate 4 and the second movable plate 5 cooperate with each other through the second slider 51;

(14) the rotation control unit 200 includes a force-transfer base 6, a drive 7, a reducer 8, an output shaft 9, a rotary plate 10 and a flange 11;

(15) the force-transfer base 6 is fixed above the second movable plate 5; the drive 7 is fixed on the force-transfer base 6; and the drive 7 is a stepping motor or a servo motor; and

(16) the reducer 8 is fixed on the drive 7, and is connected to the output shaft 9; and the output shaft 9 is connected to the rotary plate 10 via the flange 11. The rotary plate 10 is a disc or a ring.

(17) An encoder is provided on the rotation control unit 200. One of a plurality of sensors is provided on the building structure. The structure forms and the movement forms determine the choice of the sensors and the location of the selected sensor. A favored sensor is required to fulfill the collection of data, such as the horizontal acceleration and the angular acceleration of the torsional pendulum of the structure.

(18) Two ends of the first track plate 2 are respectively provided with a stop block 12 to limit the range of motion of the first movable plate 3. Two ends of the second track plate 4 are respectively provided with a stop block 12 to limit the range of motion of the second movable plate 5.

(19) A first coil 211 and a first permanent magnet 212 are provided in the first main guide rail 21; a second coil 311 is provided in the first slider 31; and the first slider 31 is movable in the first main guide rail 21 by means of the first coil 211, the first permanent magnet 212 and the second coil 311; and

(20) a third coil 411 and a second permanent magnet 412 are provided in the second main guide rail 41; a fourth coil 511 is provided in the second slider 51; and the second slider 51 is movable in the second main guide rail 41 by means of the third coil 411, the second permanent magnet 412 and the fourth coil 511.

(21) A cut-off device 13 configured to cut off power for the translation control unit 100 under an emergency is provided in the first main guide rail 21 and the second main guide rail 41, respectively.

(22) A grating ruler 14 is provided in the first auxiliary guide rail 22 and the second auxiliary guide rail 42, respectively, to measure and output a linear displacement of the first movable plate 3 or the second movable plate 5.

(23) A plurality of positioning holes 15 are provided at a bottom of the third auxiliary guide rail 23 and a bottom of the fourth auxiliary guide rail 43, respectively; the positioning holes 15 are in alignment along the third auxiliary guide rail 23 and the fourth auxiliary guide rail 43, respectively; a positioning pin that is retractable is provided at a position of the first movable plate 3 and the second movable plate 5, respectively. A hydraulic element is provided to control the positioning pin to extend or retract such that the translation control unit 100 is fixed when there is no vibration or only the rotation control unit 200 moves.

(24) A slot is provided at a top surface of the force-transfer base 6; an encoder is provided in the slot and connected to an end of the drive 7; and the drive 7 is coaxially connected to the reducer 8 and the encoder, respectively.

(25) The present application further includes an external controller which is connected to an external sensor, the drive 7 and the encoder, respectively. The external controller controls the drive 7 which further controls rotational direction and speed of the rotary plate 10, where some simple techniques involved therein, such as the signal transmission and processing, pertain to the prior art.

(26) The use process of the present application is described as follows.

(27) The translation-rotation hybrid vibration control system for buildings of the present application can simultaneously control the translational vibration and torsional oscillation of the structure. The rotation control unit 200 is fixed above the translation control unit 100, and the translation control unit 100 is provided on an external building structure, so as to control not only the common translational vibration, but also the torsional oscillation of the structure. The rotation control unit 200 functions to control the torsional oscillation and serves as a mass of the translation control unit 100. At the same time, the translation control unit 100 serves as a force transmission support of the rotation control unit 200. When the rotation control unit 200 works, a rotation control force generated by the system acts on the structure through the translation control unit 100 to realize the control effect. The acting force of the system makes the rotary plate 10 rotate through the drive 7 to produce a torsional oscillation control force. The translation control unit 100 drives the entire mass of the rotation control unit to generate horizontal control forces in two directions. The torsional oscillation control force is transferred through the force-transfer base 6 to the fixed base 1 and then acts on the building structure. The horizontal control forces directly act on the building structure through the fixed base 1.

(28) When the building structure vibrates, the sensor transmits vibration signals to the controller, so that the vibrational state of the structure can be determined by the controller. If the vibration state is determined to be the torsional oscillation, the drive 7 is controlled to drive the rotary plate 10 to rotate at a certain acceleration, and such acceleration generates a force which acts on the force-transfer base 6 and then is applied to the controlled structure through the translation control unit 100, so as to control the vibration of the structure, weakening the torsional oscillation movement of the structure.

(29) For the planar vibration, the drive 7 sends signals to the translation control unit 100. By using a linear motor, the first slider 31 below the first movable plate 3 performs acceleration or deceleration in the first main guide rail 21. The second slider 51 below the second movable plate 5 performs acceleration or deceleration in the second main guide rail 41. The grating ruler 14 measures and outputs the position of the first movable plate 3 or the second movable plate 5 in real time. The controller controls the moving speed and acceleration of the first movable plate 3 or the second movable plate 5 in real time. The counterforce generated by the movement of the first movable plate 3 and the second movable plate 5 reduces the planar vibration. At this time, the rotation control unit 200 which serves as the mass of the translation control unit 100 can assist the action of the translation control unit 100 and provide a counterforce to weaken the planar vibration of the building structure.

(30) The translation control unit 100 and the rotation control unit 200 can actively control and weaken the planar vibration and rotation of the building structure, simultaneously.

(31) When the building structure has only the torsional pendulum motion, the translation control unit 100 can stay stationary. A hydraulic element controls the positioning pin to extend, so that the positioning pin is stuck in one of the positioning holes 15 to lock the first movable plate 3 and the second movable plate 5, thereby fixing the translation control unit 100.

(32) The above are preferred embodiments of the present application, which are not intended to limit the scope of the disclosure. Any replacements and improvements made by those skilled in the art without departing from the essential scope of the present application shall fall with the scope of the present application.