JPS63180746A - Structure for vibration-proof floor - Google Patents

Abstract

PURPOSE:To provide the effect of vibration-proof and actively maintain a horizontal position by constituting an anti-roll bar which locks turnably both end portions of a support frame supported by a vibration exemption device, to respective end portions of a torsion bar supported turnably to a base stand. CONSTITUTION:A support frame 6 supported by a vibration exemption device such as laminated rubber 9 or the like and a torsion bar 4 supported turnably to a base stand 2 are equipped, and is constituted an anti-roll bar 1 which locks turnably both end portions of the support frame 6 to respective end portions of the torsion bar 4. This anti-roll bar 1 is one torsion bar 4 having both end portions as arms, and torsion angles are produced at the portions of arms, and the reaction force of the anti-roll bar 1 against these torsions acts as the force of direction which maintains a floor-material 8 horizontally. Accordingly, the effect of vibration-proof is possessed by means of the vibration exemption device, and also a horizontal position can be actively maintained by means of the anti-roll bar 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a structure of a vibration-proof floor that eliminates slight vibrations and inclinations caused by external forces.

(Prior Art) Today, there are various precision measuring instruments and information instruments, and the shaking and vibrations imparted to these instruments are blocked at the building level or floor level. The means to do so was to support the building or floor slab with seismically isolated laminated rubber bearings, air springs, etc. In this way, a difference is created in the natural vibration period, and vibration energy is damped.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional technology, even if horizontal vibration and vertical vibration are reduced, countermeasures against lifting of one side due to unbalanced load and rocking vibration are insufficient.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a structure of a vibration-isolating floor that has a vibration-isolating effect and can actively maintain a horizontal position.

(Means for Solving the Problems) In order to achieve the above object, the structure of the vibration-proof floor according to the present invention includes a support frame supported by seismic isolation devices such as laminated rubber and air springs, The anti-roll bar includes a torsion bar supported in a freely movable manner, and both ends of a support frame are rotatably engaged with each end of the torsion bar.

Preferably, the support frame and the torsion bar are locked by forming a locking part by bending both ends of the torsion bar at right angles to the circumferential direction, and providing a long hole in the locking part so that the torsion bar is supported in the long hole. It is characterized by loosely inserting a locking part whose base is fixed to the frame.

(Function) The above-mentioned anti-roll bar is a single torsion bar with arms at both ends, and when the floor material inclines, this anti-roll bar is twisted and a torsion angle is created in the arm portion. The reaction force of the anti-roll bar against this twist acts as a force in the direction of keeping the flooring horizontal.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an anti-roll bar 1, in which a support piece 3 fixed to a base 2 rotatably supports a trowel-shaped torsion bar 4 having both ends bent at right angles. Elongated holes 5 are provided in the bent end portions in the axial direction, and the locking portions that hang down from both sides of the steel support frame 6 and horizontally protrude inside the hanging portions are torsion bars. It loosely fits into the long holes 5 at both ends of 4.

FIG. 2 shows the relationship between the anti-roll bar 1 described above and the floor material 8 to be vibration-proofed. The floor material 8 is made of hard vinyl chloride material, and is supported by laminated rubber 9 using a floor slab as a base 2. In order to obtain vibration isolation at the floor level, the floor material 8 has a laminated rubber layer 9 installed on the existing floor slab, and a support frame 6 is attached to the upper end of the layered rubber layer 9.
is constructed, and the flooring material 8 is placed on this support frame 6 and fixed.

The locking part 7 that locks on the torsion bar 4 is a support frame 6
The other support piece 3 is fixed to the floor slab in place of the base 2.

In these anti-roll bars 1, since the floor material 8 is rectangular in this example, the laminated rubber is placed at four points parallel to each of its four sides and with the center axis of the laminated rubber 9 at the point where the center lines of each support piece 3 intersect. 9 is placed. The situation is shown in FIG. 3 as a side view and a bottom view.

According to the above configuration, when both the left and right ends of the flooring 8 move up and down at the same time, the long holes 5 at both ends of the torsion bar 4
The locking part 7 moves up and down inside the torsion bar 4.
Both ends only rotate about the support piece 3 at the same angle, and no spring action occurs.

However, if the floor material 8 is tilted, one of the laminated rubber 9
is contracted, the other laminated rubber 9 is extended, the left and right locking portions 7 move in opposite directions, and the torsion bar 4 is twisted. At this time, a force that causes the torsion bar 4 to return to its original shape acts via the locking portion 7 to keep the flooring 8 horizontal.

(Effects/Effects) As described above in detail, according to the structure of the vibration-isolating floor according to the present invention, since the floor material is supported by the seismic isolation device, normal vibration energy can be absorbed and eliminated.

In addition, both ends of the torsion bar, which is rotatably attached to the base that supports the flooring, are rotatably locked to the support frame to obtain an anti-roll bar, which prevents the flooring from tilting. This has the effect of reducing the need for design responses to the load distribution of the partial floor and vibration isolation table on which important equipment is installed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the structure of the anti-roll bar, Fig. 2 is a partial side view of a vibration-proof floor equipped with an anti-roll bar, and Fig. 3 is a perspective view showing the structure of the anti-roll bar.
Figure (a) is a side view of the vibration-proof floor, and figure (b) is its bottom view. 1... Anti-roll bar 2...
...Base 3...Support piece 4.
・・・・・・・・・Torsion bar 5・・・・・・Length
Hole 6...Support frame 7...
...Locking part 8...Floor material 9.
...Laminated rubber patent applicant
Obayashi Corporation Representative Patent attorney - Kensuke Shiro Patent attorney Masatoshi Matsumoto Figure 1 Figure 2 Figure 3 (a) (b)

Claims (2)

[Claims] (1) Equipped with a support frame supported by a seismic isolation device such as laminated rubber or an air spring, and a torsion bar rotatably supported on a base, and both ends of the support frame are rotated by each end of the torsion bar. A structure of a vibration-proof floor characterized by comprising an anti-roll bar that is freely locked. (2) To lock the support frame and the torsion bar, a locking portion is obtained by bending both ends of the torsion bar at right angles to the circumferential direction, and a long hole is provided in the locking portion, and the locking portion is formed inside the long hole. 2. The vibration-isolating floor structure according to claim 1, wherein a locking portion having a base fixed to the support frame is loosely inserted into the support frame.