JPS58178704A - Vibration control apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration control device Itrc that reduces low frequency vibrations on pilgrimage routes, railway routes, etc.

In general, traffic routes are as shown in Figure 1.

*It has a structure in which both ends of the beam are supported by piers (2).

In other cases of irregular roads, the number of vehicles running on the bridge increases and the speed of travel increases.

An excessive external force is applied to the road trip, and the bending of the bridge due to the length of the bridge, combined with a decrease in rigidity, causes an extremely large amount of force on the road trip! IIh is induced. Depending on the situation, this type of silkworm IIJ may be affected by the vibrations of the painting industry.
The atmosphere generates air pressure vibrations.

This can manifest as low-frequency back pressure, usually 30 hertz or higher, that is transmitted to the surrounding area, so-called low-frequency pollution. In general, loosen buildings, houses, etc. that are close to the vibration propagation to the ground.

This causes shutters, glass doors, etc. to rattle and vibrate. or,
The vibrations of houses themselves cause vibration pollution, causing great discomfort to residents.

This will result in the occurrence of several tones of vibration pollution.

Conventionally, countermeasures against vibrations on traffic roads include increasing rigidity by reinforcing bridges and piers, or installing ri, Ml#@ piers to support bridges *r*t*. fRIlb
Efforts were made to reduce the discomfort caused to residents by improving and changing the properties, and by installing soundproof walls, covers, etc. to insulate the low-frequency back pressure itself that propagates into the atmosphere.

However, with such conventional measures.

The reality is that sufficient vibration and noise reduction effects have not been achieved, and the existing traffic bridges have been fitted with auxiliary legs.
In the case of the upper III level, the use of land and space is often subject to financial constraints as well as logical constraints.

There were drawbacks such as construction problems.

The present invention is fundamentally different from the conventional vibration reduction measures as described above, and is suitable for traffic roads.

70) Vibration reduction of traffic road bridges and improvement of their vibration properties by actively applying motion control force according to the captive properties! The present invention relates to a vibration control device that achieves.

Fig. 2 shows a conceptual diagram of the control block in 4AVc misfire. (3) is the road surface vibration system (4) that is targeted for vibration reduction.
) is an imaging detector, (5) is an IJ# circuit, and (6) is a drive unit 77'+11 that generates a control force. This is a detector installed on the a3Fi Asonshan Mountain and detects the vibrations of 11 beams.

The vibrations (displacement, velocity acceleration) of the structure [displacement, velocity acceleration] of the structure [displacement, velocity acceleration] are measured by the total effector (4), and this detection signal is sent to the control circuit (5). ), and a control force corresponding to this vibration is generated by the drive device (6) via the control circuit (5).

The control force t-delayed connection 41 [111 is applied to the traffic road bridge +31 via the arm Uα to reduce the vibration of the traffic road bridge.

The present invention relates to a vibration control device for traffic roads having the above-mentioned structure, and relates to a moving device (6).An embodiment of the present invention is shown in FIG. Ite in Figure 3, Mt. II'i
= Beam, (2) is the horizontal leg, u [ is the arm attached to the bridge 41llK, ■ is the hydraulic exciter body, and the 0 mouth is the slow impact bullet.

This invention utilizes the push/pull force of the main body of the hydraulic vibrator, and the attachment is attached to it to extend the span t between the two ends of the slow extension, and add a moment to the extension. However, the control force that supports the above-mentioned vibration control is obtained. Push/pull force again! & can be made by changing the screw pressure applied to the controller (not shown) of the hydraulic exciter.

It can be easily incorporated into the system shown in FIG.

In the above embodiment, the arms are attached to both ends of one pot of the main passage connection, and the other ends of the na arms are connected to each other using a hydraulic vibrator/connecting rod.

The driving method using the hydraulic vibrator of the present invention can be applied to other mounting methods, and it will take a while to devise a complete mounting method for towers, building antennas, floors, and other structures. .

As described above, according to the invention of 9Fujin, since it generates axial push/pull force and is driven by a hydraulic adder that can expand and contract in the axial direction, it is smaller and more complex than other drive devices. It has the advantage of having both powers.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a general traffic road, Fig. 2 is a block diagram showing the control a thread pillow of the present invention, and Fig. 3 is an example of how the hydraulic vibrator of the present invention is installed on a traffic road. FIG. 2 is a configuration diagram showing an example. In the diagram, the mountain...Bridge (2)...+i1 leg (3)...
...Birth vibration system (4)...Detector +51-1.
Control circuit (6)...Drive equipment i71...Vibration t(8)...External force (9)...'@Gyoriki Scream...Arm ulI
...Connecting rod 0...Hydraulic vibrator body 2
The same line numbers in the figures indicate the same or corresponding parts. Agent Shin Kuzuno −

Claims (1)

[Claims] In a vibration control device for a target structure that receives external force and suppresses vibration, there are two true dark points of the bridge/hashiri itself, or
A hydraulic exciter installed between the bridge, piers, and the ground; a detector attached to the target structure that detects the vibration; A control circuit that applies a control force to suppress the vibration and a complete S/IJ circuit.