JPS63312472A - Vibrationproof structure in sky parking facility - 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 (Industrial Field of Application) The present invention is utilized in the technical field of mechanical multilevel parking facilities, and particularly relates to vibration isolation structures for support structures in parking facilities and buildings.

(Prior art) Column members, beam members, and machine mounting members that are the support structures of multistory parking facilities and buildings are formed by welding materials such as steel pipes, shaped steel, and steel plates. A drive device including a motor, a brake, and a speed reducer is attached to the mounting member. The vibrations generated during operation of this drive device generate vibrations due to the resonance action according to the natural vibration motes of each of the above-mentioned members of the support structure and are transmitted inside each member. The noise also passes through the vibration-proof rubber etc. placed between the members and propagates to the building itself, causing secondary noise to be generated in other rooms adjacent to each other across the wall.
In particular, when buildings are made of steel, the damping capacity is small, so this phenomenon is noticeable and causes major environmental damage.

(Problem to be Solved by the Invention) Therefore, as anti-vibration measures for support structures, spraying or painting high-viscosity anti-vibration materials on the vibration-generating parts, or forming high-viscosity materials to a thickness of 7 m to 19 mm However, it was not possible to achieve the desired soundproofing effect, and the anti-vibration steel plate was laminated in a sandwich-like manner with the anti-vibration plate and steel plate. Even if the support structure is constructed using the following methods, not only is the soundproofing effect low, but all of these methods also have the disadvantage of increasing production costs.

The present invention addresses the above-mentioned conventional problems and provides a vibration isolation structure for a multi-story parking facility that reduces structure-borne sound by regulating the resonance effect due to the natural vibration of the support structure. .

(Means for Solving the Problems) Means for solving the above problems of the present invention are that the column members, beam members, machine mounting members, etc. that constitute the parking equipment and the building in which the parking equipment is accommodated are It is formed of shaped steel, steel plate, etc., and each member is characterized in that the hollow part is filled with sand-like particles, or the surface of each member is tightly attached with a sand bag filled with sand-like particles. It is something.

(Function) The effect of the above means is that when vibration is propagated to support structures such as column members, beam members, and machine mounting members due to the operation of the drive device that is the vibration generation source, this vibration is transmitted to the sand-like particles. Attenuation is caused by the mass of the body and the friction between the sand particles, and the generation of noise is also suppressed.

(Example) Hereinafter, each embodiment of the present invention will be described based on the drawings.

Embodiment 1 This example is shown in FIGS. 1 to 6, in which a mechanical mounting member, which is a support structure of a multilevel parking facility, is supported by a support beam of a reinforced concrete building, and the mechanical mounting member is installed in a cavity. It is characterized by a vibration-proof structure filled with sand-like particles.

The multilevel parking facility 1 shown in FIGS. 1 to 3 is accommodated in a hoistway 3 surrounded by a bulkhead 2a of a reinforced concrete building 2, and a reinforced concrete structure protruding from the inside of the hoistway and facing the Each leg of a machine mounting member 7, which is formed by connecting both ends of the surgical section 5 and the center of the opposing leg 6 in an H-shape, is fixed on the structural support beam 4. A plurality of vibration isolating rubbers 4a are interposed at appropriate positions between the support beam 6 and each support beam 4.

On the machine mounting member 7, a motor 8 and a brake 9 are installed in the center.
A drive device 12 is constructed by connecting a reduction gear 11.11 to each end of transmission shafts 10a, 10b extending laterally from the motor and brake, respectively.

On the other hand, opposing brackets 13a and 13b are erected at both ends of the mechanical mounting member 5, respectively, and a lower shaft 14a, an intermediate shaft 15'a, and an upper shaft 16a are pivotally supported on each bracket. Each lower shaft 14a is connected to the output side of the reduction gear 11 by fixing a pinion 14, and each intermediate shaft 15
An idler 15 is fixed to a, and a drive gear 16 and an upper sprocket 17 are fixed to each upper shaft 16a.

An endless chain 1 is connected between the upper sprocket 17.17 and the lower sprocket 18.18 which is pivoted by suitable means.
9.19 is wound. A suitable number of link plates 19a are provided on each endless chain at equal intervals, and a vehicle cage 20 suspended from the tips of the link plates is configured to circulate within the hoistway 3 by a drive device 12. ing.

2b is an entrance/exit.

The vibration isolation structure 21 according to the present invention is applied to the machine mounting member 5, and will be described with reference to FIGS. 4 to 6.

The surgical section 5 is formed into a box-shaped cross section with an upper flange 5a, a lower flange 5b, and webs 5c, and an appropriate number of vertical reinforcing plates 5d are provided inside to suppress buckling and lateral vibration of the web 5C. are arranged facing each other at equal intervals. An appropriate number of sand inlet holes 5e are bored in the upper flange 5a, and the leg portion 6 is similarly formed into a box-shaped cross section with an upper flange 6a, a lower flange 6b, and webs 6c, 6c. A suitable number of reinforcing plates 6d are provided with sand charging holes 6e in the upper flanges 6a. Each sand input hole 5e and 6
The vibration isolating structure 21 is filled with sandy particles S into the cavity 7a of the machine mounting member 7 from e to the upper end of each sand inlet 5e, 6e.
is configured. In addition, horizontal reinforcing plates 5f and 6f (shown by chain lines in FIGS. 5 and 6) are provided at intermediate portions of the vertical reinforcing plates 5d and 6d, if necessary.

The sandy particles S are naturally dried river sand, and have a particle size of 4.
Particle size of 1m to 2mm for those of mm to 5IIITl
Mixing these materials is extremely effective in preventing mutual movement of sand-like particles with large particle sizes and improving frictional function.

In addition, instead of this example, the material of the sand-like particles S may be a sand-like metal material or a synthetic resin material, or a metal material or a synthetic resin material, as long as the mass and the friction between the particles are equal to or higher than river sand. The material may be mixed with a highly viscous rubber material and compressed into sand-like particles and then filled.

Incidentally, small-diameter reinforcing bars or the like may be provided in a grid pattern on the inner surface of the machine mounting member 7 in order to increase the degree of adhesion between the inner surface and the sandy particles S, if necessary.

Next, the operation of the first embodiment will be explained.

The drive device 12 of the multi-story parking facility 1 is activated and the vehicle cage 20 is circulated. The vibrations generated in the drive device 12 are propagated to the mechanical attachment member 7, and the resonance effect of the propagated vibration according to the natural vibration mode of the mechanical attachment member is caused by the mass of the sandy particles S and the relationship between the sandy particles S. It is significantly damped by the frictional action of

Therefore, the vibrations generated by the drive device 12 are transmitted to other support structures of the multilevel parking facility 1, namely the column members and beam members (
(both are not shown) and propagation to the building 2 is suppressed, and secondary noise in other rooms is prevented.

Embodiment 2 This example is shown in FIGS. 7 to 9, in which a mechanical mounting member, which is a support structure of a multilevel parking facility, is supported by a support beam of a reinforced concrete building, and the mechanical mounting member is installed in a cavity. Anti-vibration structure filled with sandy particles.

It is characterized by an anti-vibration structure with sandbags attached to the surface.

The vibration isolation structure 31 is constructed by filling a hollow part of the surgical site 32 of a machine mounting member 34, which is formed by connecting both ends of the surgical site 32 and the center of the legs 33 in an H shape, with sand-like particles S. , a sand bag B filled with sand-like particles S is tightly attached to the surface of one side of the leg portion 33.

In the surgical section 32, the opposing shaped steel 35 maintains a cavity 328 and is arranged in parallel with the webs 35c facing each other.
d is welded to form a box-shaped cross section with an upward opening. A sand inlet 35e is opened at a location where the upper flange 35a of the engineering shaped steel 35 faces, and the surgical section 32 is opened from the sand inlet.
The inside is filled with sand-like particles S. 35f is a vertical reinforcing plate.

The leg portion 33 is made of engineered steel, and the web 33 of the leg portion
A sand bag B filled with sandy particles S is tightly pressed against the surface 33b on one side of the sand bag A from the outside using a clamp member 36 formed by bending a small diameter reinforcing bar or the like. Note that the sand bag B is placed on the other side of the web 33a (the right side in FIG. 9) instead of in this example.
It may be placed in close contact with the surface of

The vibration isolating structure 31 performs the same function as the vibration isolating structure 21 of the first embodiment.

By the way, the vibration isolation structure 31 of the machine mounting member 34 of Example 2
When we conducted an experiment on the performance of the present invention, we obtained the results shown in FIGS. 10 and 11. In other words, compared to the measured values before filling the sandy particles shown in FIG. 10, the measured values after filling the sandy particles shown in FIG. A favorable effect is also exhibited at the flange portion measurement point B2 (see Fig. 11(b)), which is far away from the body.

81 Example 3 This example is shown in FIGS. 12 and 13, in which a machine mounting member, which is a support structure of a multi-level parking facility, is supported on a beam member, which is a support structure of a steel-framed building. The beam member and the machine mounting member are characterized by having a vibration-proof structure in which the hollow portion is filled with sand-like particles. Note that since the multilevel parking facility is the same as that in Example 1, its explanation will be omitted.

The vibration isolation structure 41 includes a machine mounting member 42 filled with sandy particles S.
and a beam member 44 of a steel-framed building 43 for supporting the machine mounting member is filled with sand-like particles S.

That is, the beam member 44 is made of engineered steel, and both ends of the beam member 44 are fixed to finger members (not shown) installed between each column member 45 of the building 43. On both sides of the beam member 44,
A cavity 44a is formed by fixing a cover member 46 made of channel steel, C-shaped steel, or the like. Sand particles S are filled from a sand inlet 46a formed in the upper part of the cover member 46, and the action of the vibration isolation structure 41 is the same as in the first embodiment.

The vibration isolation structure 21, 31, 41 of the present invention may be applied to the cavity or surface of the column member 45 if necessary, and a column member such as a steel pipe having a cylindrical cross section may also be filled with sandy particles S. It can be formed into a vibration-proof structure.

(Effects of the Invention) According to the above-described configuration, the present invention can provide support structures for multilevel parking facilities and buildings, such as column members, beam members, machine mounting members, etc., even if they are formed of shaped steel, steel plates, etc. By filling the cavities of the parts with sand-like particles or placing sandbags filled with sand-like particles on the surface of each member, the propagated vibrations from the drive device can be significantly attenuated, thereby eliminating noise. It not only eliminates environmental problems by suppressing the amount of heat generated, but also has excellent effects such as a simple structure and a significant reduction in manufacturing costs.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a side view of the multilevel parking facility in Embodiment 1, FIG. 2 is a front view of the same, and FIG.
The figure is a plan view taken along the line ■-■ in Figure 2, Figure 4 is an enlarged view showing one end of the machine mounting member in Figure 3 with a part cut away, and Figure 5 is a plan view taken along the line ■-■ in Figure 4. FIG. 6 is a vertical cross-sectional view taken along line VI-VI in FIG. Fig. 7 is a vertical cross-sectional view taken along the line ■-■, Fig. 9 is a longitudinal cross-sectional view taken along the line IX-IX in Fig. 7, and Fig. 10 is before filling the sandy granules in an experiment using the machine mounting member of Example 2. FIG. 11 is a diagram showing the measured vibration values after filling the same sand-like particles, FIG. 12 is a front view of the multi-story parking facility in Example 3, and FIG. 13 is the It is a longitudinal cross-sectional view of the beam member showing an enlarged view of the X section in the figure. 1... Multilevel parking facility, 2,43... Building, 5゜32... Surgery department, 6,33... Legs, 7,34.42・・・・・・Machine mounting member, 7a,
32a, 4.4a...Cavity part, 21, 31.4
1... Anti-vibration structure, 33b... Surface, 44...
...Beam member, 45...Column member, S...Sand-like granules, B...Sand bag. Figure 1 Figure 2 Figure 6 Figure 5

Claims (1)

[Claims] (1) Column members, beam members, machine mounting members, etc. that constitute the parking equipment and the building in which the parking equipment is housed are made of shaped steel,
A multilevel parking facility formed of a steel plate or the like, characterized in that each member has a cavity filled with sand-like particles or a sand bag filled with sand-like particles is tightly attached to the surface of each member. Anti-vibration structure.