JPH035645Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention consists of installing endless chains between two upper and lower sprockets, which are arranged at an appropriate distance from each other, inside a building. This invention relates to a support structure for a vertical circulation parking facility in which cages for mounting a large number of vehicles are suspended.

(Prior Art and its Problems) In recent years, vertical circulation parking facilities have become widespread, but on the other hand, noise propagation to buildings and rooms adjacent to the parking facilities has become a major problem.

There are two types of noise propagation: airborne sound that passes through partition walls, and solid-borne sound that vibrates through the building frame and is generated as secondary noise in adjacent rooms. To deal with airborne sound, it is possible to increase the sound insulation of partition walls or increase the sound absorption capacity of the parking lot and adjacent rooms. In particular, there are various ways to deal with this problem, such as blocking the electric motor and reduction gear box that are the source of the noise.

Generally, the noise level in rooms adjacent to vertical circulation parking equipment is dominated by structure-borne sound.
The noise propagates not only to the room adjacent to the parking facility but also to the surrounding area, causing severe damage. The most common way to deal with solid-borne sound is to insert vibration-proof rubber between the parking device and the building frame to isolate vibrations. The degree of vibration insulation by anti-vibration rubber is 1/
It is expressed as a vibration transmission system and is determined by the natural frequency and excitation frequency of the vibration system.

Therefore, the natural frequency must be lowered to minimize the vibration transmissibility.

Conventionally, the thickness of the anti-vibration rubber was increased by increasing the thickness of the anti-vibration rubber.
This was dealt with by lowering the spring constant of the anti-vibration rubber, such as by inserting three layers one on top of the other. If the spring constant of the anti-vibration rubber is lowered, the deflection of the anti-vibration rubber due to the parking device, the weight of parked cars, and the driving force will increase, but it has its own limits in order to function as a parking device. It is not possible to dramatically improve the degree of vibration isolation.

(Means for Solving the Problems) The support structure according to the present invention includes a support beam protruding from inside a building, and a first vibration isolating material formed on the support beam in an I-shape when viewed from above. A second intermediate support, which is formed into an I-shape in plan view and provided with a drive device, is mounted on the first intermediate support through a second vibration isolator. The upper sprocket of the vertical circulation parking device 2 is supported on a pedestal provided on the second intermediate support, and the drive device is connected to the support beam, and the upper sprocket of the vertical circulation parking device 2 is supported on a frame provided on the second intermediate support. A double vibration system was formed.

(Function) According to the support structure of the present invention, even if the movement of the drive device due to the deflection of the vibration isolating rubber is within the permissible range, the vibration transmission rate is greatly reduced, and the propagation of structure-borne sound to the surroundings of the parking device is insulated. It can eliminate disturbances caused by noise.

(Example) Examples shown in the drawings will be described below. For convenience of explanation, left and right in Figure 1 are referred to as "left" and "right", respectively.
The left and right sides in FIG. 2 are called "front" and "back".

Reference numeral 1 is a building in which a vertical circulation parking system 2 is installed inside, and a front wall 1a has an entry/exit entrance 3 on the ground, and support beams 1a 1 and 1b 1 are protruded from the front and rear walls _1a and _1b at the upper part of the interior. It has been set up.

Reference numeral 4 designates a second intermediate support body of the parking device 2, which has a longitudinally elongated front support body supported by a first intermediate support body 101, which will be described later, on the support beams 1a ₁ and 1b ₁ , respectively.
The rear supports 4a, 4b, and the front and rear supports 4a, 4
A central body 4c is installed in the front-rear direction between the central parts of the central body 4c, and the central body 4c is formed into an I-shape when viewed from above. (not shown) is also provided.

Reference numerals 5a and 5b denote a pair of mounts erected on the central body 4c with a distance between the front and rear, and a pair of front and rear mounts are mounted on the upper part of each mount 5a and 5b so as to be rotatable about the central axis horizontally and concentrically in the front and back direction. Upper sprocket 6a, 6b
The upper sprockets 6a and 6b are connected to a driving device such as the electric motor and a speed reducer via an appropriate transmission mechanism (not shown). Reference numerals 7a and 7b indicate a pair of front and rear lower sprockets that are supported concentrically on the lower parts of the front and rear walls 1a and 1b, corresponding to the lower parts of the upper sprockets 6a and 6b, respectively, and are provided between the upper sprockets 6a and 6b, respectively. endless chain 8
A and 8b are wrapped around it. 9a and 9b are cage suspension members attached to the endless chains 8a and 8b at equal intervals, respectively; 10 is a cage; and front and rear cage frames 10
Support rod 10 inserted between the upper center of a and 10b
The front and rear extension ends of c are pivoted and suspended from the cage suspension members 9a and 9b corresponding to the front and rear, respectively.

Next, the support structure 100 will be explained.

101 is the first intermediate support body, which has a long and narrow front part on the left and right sides.
The rear support members 101a, 101b and the connecting member 101c installed between the center portions of the front and rear support members 101a and 101b form an I-shape when viewed from the top.
The left and right parts of the rear support members 101a and 101b are placed and fixed on the support beams 1a ₁ and 1b ₁ via a first vibration isolator 102, respectively.

As shown in FIG. 3, the first vibration isolating material 102 is made of an appropriate material between the upper and lower plates 102a and 102b.
It consists of a rubber plate 102c having a thickness and elastic modulus bonded together, and the upper and lower plates 102a and 102b are respectively bolted to the lower surfaces of the front and rear support members 101a and 101b and the support beams 1a ₁ and 1b ₁ . be.

Moreover, the second intermediate support body is a second vibration isolator 10.
3 is mounted and fixed on the first intermediate support 101. That is, the second vibration isolating material 103 also has upper and lower plates 103 similar to the first vibration isolating material 102.
It consists of a rubber plate 103c glued between the upper and lower plates 103a and 103b, respectively, and the left and right lower surfaces of the front and rear supports 4a and 4b, respectively, and the front and rear support members 101a and 101b.
It is connected to the top with bolts.

FIG. 4 shows the relationship between the vibration transmission rate and the excitation frequency by the support structure 100. In FIG. 4, the horizontal axis represents the excitation frequency f, and the vertical axis represents the vibration transmissibility Tr. The lower the vibration transmissibility, the lower it is, indicating better vibration insulation.

Curve C ₁ represents the vibration transmissibility of a single vibration system using only one of the first and second vibration isolators 102 and 103, and curve C ₂ represents the vibration transmission rate of the vibration isolator 102 or 103 used in curve C ₁ . The vibration transmissibility of a single vibration system when the rubber plates 102c or 103c are stacked one on top of the other (that is, when the spring constant of the rubber plates 102c or 103c is reduced to 1/2) is shown. Further, the curve C ₃ represents the first vibration damping material 102 between the support beams 1a ₁ and 1b ₁ and the first intermediate support 101 as well as the first intermediate support 10 as in the present invention.
1 and the second intermediate support 4
The vibration transmissibility in a double vibration system consisting of is shown. In addition, the rubber plates 102c, 10 at curve _C3
The spring constant of 3c is made equal to the spring constant of curve _C1 . The frequency f ₁ at the intersection of the curves C ₂ and C ₃ can be adjusted mainly by the weight of the first intermediate support 101. Therefore, by setting the weight of the first intermediate support 101 so that the frequency f ₁ is lower than the audible limit, insulation of solid-borne sound in the audible region can be further strengthened.

Noise has the property of becoming less perceptible to the human ear as the frequency becomes lower. For example, as in the JIS A scale, even if the sound pressure is the same, as the frequency decreases, the noise value is corrected to be lower (A scale correction).

Therefore, in the case of vertical circulation type parking equipment, f ₁ does not necessarily need to be lower than the audible limit (about 20 Hz), and a sufficient soundproofing effect can be achieved even in the 63 Hz band.

(Effects of the invention) As described above, the present invention places and fixes a first intermediate support formed in an I-shape in plan view on a support beam via a first vibration isolator, and A second intermediate support, which is formed into an I-shape in plan view and provided with a drive device, is placed and fixed on the intermediate support via a second vibration isolator, and is provided on the second intermediate support. The upper sprocket of the vertical circulation parking device 2 is supported on the frame and the drive device is linked to form a double vibration system between the support beam and the vertical circulation parking device, which is different from the conventional single vibration system. The vibration transmission rate can be significantly lowered than in the case of a parking system, and the propagation of structure-borne sound to the surroundings of parking equipment can be insulated and noise pollution can be eliminated. In addition, since the left and right lengths of the front and rear support members of the second intermediate support body can be extended to the full width of the inside of the building, the tilt of the drive device due to the difference in weight of vehicles stored in the left and right rows of cage groups can be increased. The load applied to the support beam is placed near the beam end, reducing the moment, which has the additional effect of reducing the weight of the support beam.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of a vertical circulation type parking facility employing the support structure of the present invention, Fig. 2 is a side view taken in the direction of the ~ arrow in Fig. 1, and Fig. 3 is an enlarged detailed view of a portion of Fig. 1. FIG. 4 is a diagram showing the relationship between vibration transmissibility and excitation frequency in the conventional and the present invention. In the diagram, 1 is the building, 1a ₁ , 1b ₁ are the support beams, and 4 is the second
An intermediate support, 100 is a support structure, 101 is a first intermediate support, and 102 and 103 are first and second vibration isolators, respectively.

Claims (1)

[Scope of utility model registration request] Inside the building, an endless chain is stretched between upper and lower sprockets arranged at an appropriate distance from each other vertically, a large number of vehicle mounting cages are suspended from the endless chain, and a drive device is provided in conjunction with the upper sprocket. In a vertical circulation parking facility, a support beam is provided protruding inside the building, and a first intermediate support body formed into an I-shape in plan view is placed and fixed on the support beam via a first vibration isolating material. A second intermediate support, which is formed into an I-shape in plan view and provided with a drive device, is placed and fixed on the first intermediate support via a second vibration isolator, and The upper sprocket of the vertical circulation parking device 2 is supported on a frame provided on the support body, and the drive device is linked to form a double vibration system between the support beam and the vertical circulation parking device. A support structure in a vertical circulation parking facility, characterized by: