JPH06257321A - Control device for floor vibration - Google Patents

Abstract

PURPOSE:To provide a floor vibration control device which can display constant performance for a long term, and can react even to the slight vibration of a structural body such as a floor to absorb the vibration. CONSTITUTION:In a joining part between an arm 14 and a receiving frame 11 in a floor vibration control device having the arm 14 attached to a beam member 11, a weight 15 supported by the arm 14, and a damper 16 connected to the tip of the arm 14, a spring member is insertedly set between the arm and the receiving frame to bring the arm into rigid contact with the receiving frame. The floor vibration is therefore more directly transmitted to the heavy weight for controlling the floor vibration. On the other hand, since the spring member is insertedly set in a connecting part between the receiving frame 11 and the arm 14 to bring the receiving frame beam member 11 and the arm 14 into rigid contact with each other, the occurrence of backlash in the joining part of both members can be prevented for making the floor vibration control device display a constant clamping performance for a long term.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor vibration control device, and more particularly to a floor vibration control device capable of absorbing a slight vibration of a structure such as a floor and absorbing the vibration.

[0002]

2. Description of the Related Art Conventionally, a so-called floor vibration control device such as a dynamic vibration absorber may be installed in a building in order to reduce vibration of the floor when a person walks in the room. As a conventional example of such a floor vibration control device, there is one as shown in FIGS. 6 and 7, for example.

This floor vibration control device is provided under the floor or the like, and has a bracket 2 attached to the end surface of a beam 1 made of H-shaped steel, etc., a torsion bar 3 attached to the bracket 2, and a base. An end of the arm 4 is supported by the bracket 2 via a torsion bar 3 by a hinge connection, and extends substantially horizontally, and a weight 5 attached to and supported by the arm 4 and a tip portion of the arm. It is composed of a damper 6 which is connected to reduce the vertical vibration of the arm 4 and a spring device 7 which is connected to a predetermined position between both ends of the arm 4 to support the arm 4. This floor vibration control device is installed so that the arm 4 extends from the end surface of the beam 1 along the side surface of the beam 1,
Moreover, as shown in FIG. 7, it is provided in pairs on one side and the other side of the side surface of the beam 11.

With the above construction, it is possible to enhance the vibration damping effect of the floor without interfering with the piping under the floor. Then, when a person walks on the floor, vibration occurs,
The damper 6 and the spring device 7 are adjusted to control the floor vibration so that the weight 5 functions to move up and down in a direction to suppress the floor vibration.

[0005]

However, in such a conventional floor vibration control apparatus, since the arm 4 is hinged to the bracket 2 at the connecting portion of the arm 4 to the beam 11, it has been a long time. If there is play in this fulcrum due to the use of, the floor vibration control device does not exhibit the expected behavior even if vibration occurs on the floor, and the effect of absorbing the floor vibration may decrease. Further, in the above-mentioned conventional example, the weight 5, the damper 6 and the spring device 7 are provided as the components of the floor vibration control device.
Therefore, there is a problem that it is difficult to make each of these elements compact, which hinders the floor vibration control device from being made compact.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to be able to exhibit a certain performance for a long period of time and to respond to a slight vibration of a structure such as a floor. An object of the present invention is to provide a floor vibration control device capable of absorbing this vibration.

[0007]

In order to achieve the above object, the present invention is connected to an arm attached to a beam member of a building, a weight supported by the arm, and a tip portion of the arm. In a floor vibration control device having a damper, a spring member is interposed between the arm and the receiving frame member at the joint between the arm and the receiving frame member, and the arm is rigidly contacted with the beam member. And

[0008]

According to the present invention, when the weight is swaying up and down due to the vibration of the floor, the damper and the spring member function via the arm so that the swaying of the weight suppresses the floor vibration. , Control the vibration of the floor. Since the beam member and the arm are rigidly contacted with each other, relative motion such as frictional motion can be avoided between both members, and play can be prevented. Therefore, the floor vibration control device of the present invention can exhibit a constant performance for a long period of time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of a floor vibration control apparatus according to an embodiment of the present invention, FIG. 2 is a side view showing a mounting relationship of a floor vibration control apparatus according to this embodiment to a beam member, and FIG. FIG. 4 is a front view for explaining the configuration of the floor vibration control device in detail, FIG. 4 is a plan view of the same, and FIG. 5 is a floor plan view for explaining an arrangement state of the floor vibration control device according to the present invention.

In these figures, reference numeral 11 is a beam provided under the floor or the like for supporting the floor 12, and 13 is provided on the side surface of the vertical flange portion 10a of the receiving frame 10 for attaching an arm described later. A disc spring as a spring member, 14 is an arm whose base end is coupled and supported by the receiving frame 10 and extends in a substantially horizontal direction, 15 is a weight attached to and supported by the arm 14, and 16 is an arm. A damper that is connected to the tip of the arm 14 and damps the vertical vibration of the arm 14.
Reference numeral 7 is a guide rail that prevents the arm 14 from rolling laterally and guides the arm 14 to move correctly in the vertical direction.

As shown in FIG. 5, the floor vibration control system includes a beam 1 extending vertically when the floor 12 of a building is viewed in a plane.
1 is installed in the vicinity of the intersection of 1 and a beam 11 extending in the lateral direction. Since the plurality of crossbeams 11 are provided by intersecting a plurality of crossbeams 31 that are erected between the pillars 30 of the building at regular intervals, the crossbeams 11 extending in the vertical direction and the crossbeams 11 extending in the horizontal direction. Multiple intersections with are formed. Therefore, the floor vibration control device is also installed at a plurality of places under the floor of one living room (portions indicated by circles in FIG. 5).

The floor vibration control device is mounted and fixed to the beam 11 by engaging the main portion of the floor vibration control device with both the lower flange 11a of the beam and the fixing plate 11c protruding from the beam. Attach the stopper 18 to this stopper 1
8 is fixed to the beam 11 with screws 19. To attach the arm 14 to the receiving frame 10, a mounting flange (hereinafter referred to as a mounting flange) 14a is provided at the base end of the arm 14, and a disc is provided between the mounting flange 14a and the vertical flange portion 10a of the receiving frame 10. Spring 1
3 is interposed and the vertical flange portion 10a and the mounting flange 14a are fastened with bolts 20. Thereby, the receiving frame 10 and the arm 1
4 is rigidly contacted, and for example, even if the arm 14 moves up and down with this mounting portion as a fulcrum, no frictional movement occurs between both members.

To attach the weight 15 to the arm 14, a slit hole 21 extending in the longitudinal direction is formed in the middle portion of the arm 14.
On the other hand, the weight 15 is formed with an attachment hole through which the arm 14 can be inserted and a bolt insertion hole extending in a direction perpendicular to the attachment hole, and the weight 15 is attached to the arm 14 and then the fixing bolt 22 is attached. Through the bolt insertion hole and the slit hole, and tightened and fixed by the insertion nut 23. On both sides of the weight 15 attached to the arm 14, the weight 15
A ridge 24 for adjusting the deviation of the sheet is mounted. The damper 16 includes, for example, a cylinder portion 25 and a piston portion 26.
A fluid type damping device constituted by is used to fix the cylinder part 25 to the base part of the floor vibration control device and to connect the piston part 26 to the tip part of the arm 14 with a fixing bolt 27. Also, the arm 14 and the damper 16
The engaging hole 28 is formed in the tip portion of the arm 14 near the connecting portion with
The guide rail 17 is inserted into the engagement hole 28 with a predetermined gap.

In this embodiment, the floor vibration control apparatus is installed so that the arm 14 extends along the side surface of the beam 11 from the end surface of the receiving frame 10 where the vertical flange 10a is provided, and FIG. As shown in
Although it is installed only on one side of the side surface of the beam 11, like the above-described conventional example, it may be provided on one side and the other side of the side surface of the beam 11 in pairs. Further, since the floor vibration control device is installed in a state of being fixedly attached to the side surface of the beam 11, it does not interfere with the piping below the floor 12.

The operation of the floor vibration control system of this embodiment constructed as described above will be described below. Vibration occurs when a person walks on the floor 12, and the damper 16 and the disc spring 13 move the weight 15 in a direction to suppress the floor vibration, thereby controlling the vibration of the floor 12. At this time,
Depending on how the force is applied to the floor 12, the weight 15 has a swinging action not only in the vertical direction but also in the horizontal direction. However, since the arm 14 is equipped with the guide rail 17 extending in the vertical direction, Is prevented. Since the disc spring 13 rigidly contacts the receiving frame 10 and the arm 14 and integrates them, relative movement such as frictional movement between both members 11 and 14 can be avoided, and play can be prevented. Therefore, the floor vibration control device of the present invention can exhibit a constant performance for a long period of time.

[0016]

As described above, according to the present invention,
A floor vibration control device having an arm attached to a beam member, a weight supported by the arm member, and a damper connected to a tip portion of the arm, and an arm at a joint portion between the arm and the beam member. Since the spring member is interposed between the beam member and the arm is in rigid contact with the beam member, the weight is vibrated by the damper spring member and vibration of the floor is suppressed. Since the beam member and the arm are rigidly contacted with each other, the play is prevented from occurring at the connecting portion of both members. Therefore, the floor vibration control device of the present invention can exhibit a constant performance for a long period of time.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a floor vibration control device according to an embodiment of the present invention.

FIG. 2 is a side view showing a mounting relationship of the floor vibration control device to the beam member in the first embodiment.

FIG. 3 is a front view for explaining in detail the configuration of the floor vibration control device of this embodiment.

FIG. 4 is a plan view for explaining the configuration of the floor vibration control system of this embodiment in detail.

FIG. 5 is a floor plan view illustrating an arrangement state of a floor vibration control device according to the present invention.

FIG. 6 is a front view showing an example of a conventional floor vibration control device.

FIG. 7 is a plan view of the conventional example.

[Explanation of symbols]

 10 Receiving Frame 11 Beams 12 Floor 13 Disc Spring (Spring Member) 14 Arm 15 Weight 16 Damper 17 Guide Rail

Claims (1)

[Claims] 1. An arm having a base end coupled to a beam member of a building and attached to extend substantially horizontally, and a weight attached to the arm and supported by the arm.
A damper that is connected to a tip portion of the arm and damps vertical vibrations of the arm, and a spring member is interposed between the arm and the beam member at a connecting portion between the arm and the beam member. The floor vibration control device is characterized by being rigidly connected to the beam member.