JPH07139589A - Vibration-proof frame - Google Patents

Abstract

PURPOSE:To improve the economics by reducing the manufacturing cost, the distribution and inventory cost, improve the workability at the time of construction, and prevent and damp normal vibration and large vibration. CONSTITUTION:A vibration-proof frame 10 is arranged in parallel, namely in a rail shape on the bottom surface of an apparatus 11 for generating vibration through an installation fittings 12, 12, and it is composed of vibration-proof units 14, 14 fixed on a floor surface 13. The vibration-proof unit 14 consists of a thin and long upper supporting member 15 on which the apparatus 11 is mounted, a lower supporting member 16 fixed on the floor surface 13 informed of a pair with the upper supporting member 15, and a vibration absorbing device 17 interposed between the upper supporting member 15 and the lower supporting member 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration stand on which an air conditioner, a gas heat pump air conditioner outdoor unit, etc. are mounted and whose vibration transmission is suppressed.

[0002]

2. Description of the Related Art Conventionally, in order to prevent vibration and noise generated by an air conditioner installed on a rooftop of a building or a veranda from being transmitted indoors, an air conditioner mount 1 as shown in FIG. It was installed by intervening. The conventional anti-vibration mount 1 includes an upper mount 2 and a lower mount 3 which are formed in a frame shape according to the plane dimensions of an air conditioner, and a cylindrical fixed vibration isolator provided at each corner of the upper and lower mounts 2 and 3. The material 4, the movable vibration-proof material 6 in which the upper cover and the lower cover fixed to the slide plate 5 are fitted via the coil spring, and the upper frame when there is a large vibration such as an earthquake that does not affect normal vibration. It is composed of an earthquake-proof stopper 7 attached so as to prevent the base 2 and the lower base 3 from coming off. The upper mount 2 is fixed to the bottom of the air conditioner and the lower mount 3 is fixed to the floor by bolts.

[0003]

However, in the conventional anti-vibration mount 1, since the upper mount 2 and the lower mount 3 are frame-shaped, several types of mounts are prepared according to the bottom plane dimensions of the air conditioning equipment to be mounted. Had to do. Therefore, there is a drawback that enormous manufacturing cost and distribution / inventory cost are required. Although it is desired to reduce the weight and size of the anti-vibration base during actual installation on site, when installing a small anti-vibration base equipped with anti-vibration materials and anti-seismic stoppers at each corner of the air conditioning equipment. ,
There is a problem that it takes a lot of time for positioning during construction, which rather reduces workability.

Further, although the vibration-proofing materials 4 and 6 provided in the conventional vibration-proof frame are sufficient to prevent normal vibration, the equipments to be mounted may be damaged when the equipment is started or stopped or exposed to a strong wind. When it vibrates greatly, even the movable vibration isolator 6 could not damp large vibrations from all directions.

Therefore, it is a first object of the present invention to provide a vibration-isolating stand that reduces manufacturing costs, distribution and inventory costs, improves economic efficiency, and has good workability during construction.
In addition, as a second purpose, the normal vibration and the large vibration are effectively isolated and damped.

[0006]

According to a first aspect of the present invention, there is provided a vibration-isolating mount for mounting a device that emits vibration, wherein vibration absorption is provided between an elongated upper support member and a lower support member. It is characterized in that a vibration isolation unit is configured with an apparatus interposed, and a plurality of the vibration isolation units are arranged in parallel under the bottom surface of the device.

According to a second aspect of the present invention, there is provided an anti-vibration mount which has an upper support member on which a device that vibrates is mounted, a lower support member provided to face the upper support member, and the upper support member and the lower support member. In a vibration isolation frame in which a vibration absorbing device and a seismic resistant stopper are interposed between a supporting member and the vibration absorbing device, the vibration absorbing device has a lower cover arranged on the upper supporting member and a lower cover arranged on the lower supporting member. A coil spring type vibration damping material in which a cover is fitted via a coil spring, and a snubber in which a rubber body is provided at an upper end portion of a bolt fixed to the lower support member. .

[0008]

According to the present invention, since a plurality of antivibration units are arranged in parallel on the equipment to be mounted to form the antivibration stand, the manufacturing cost and the distribution / inventory cost can be reduced. And
Normal vibration is prevented by a coil spring type vibration damping material in which an upper cover and a lower cover are fitted via a coil spring, and large vibration is provided with a rubber body at the upper end of a bolt fixed to a lower support member. Damped by snubber.

[0009]

EXAMPLES An example of the present invention will be described below.
As shown in FIG. 1, the vibration-proof frame 10 of the present invention is arranged in parallel, that is, in a rail shape, on the bottom surface of a device 11 that vibrates, via fixtures 12, 12, and is fixed to a floor surface 13. It is composed of anti-vibration units 14, 14. The configuration of the vibration isolation unit 14 will be described in detail with reference to FIG. 2. The vibration isolation unit 14 mainly consists of an elongated upper support member 15 on which the device 11 is placed, and a pair of the upper support member 15 and the floor. Surface 13
And a vibration absorbing device 17 interposed between the upper support member 15 and the lower support member 16.

Examples of the vibration absorbing device 17 include a coil spring type vibration damping material 18 and a snubber 19. As shown in FIG. 3, the coil spring type vibration damping material 18 is similarly arranged on the lower support member 16 and the upper cover 21 fixed to the rubber slide plate 20 provided on the upper support member 15. Lower cover 2
2 are fitted via a coil spring 23. Such a coil spring type vibration damping material 18 is a slide plate 20.
Is movably attached to the upper and lower support members 15 and 16 and has a function of preventing the transmission of vibration generated by normal operation of the device.

As shown in FIG. 2, the snubber 19 has a cylindrical rubber body 25 having a curved upper surface mounted on the upper end portion of a bolt 24 fixed to the lower support member 16. Concentric projections 26 are provided on the outer peripheral surface of 25. Such a snubber 19 does not come into contact with the upper support member 15 when the amplitude of the vibration of the device is small, and therefore does not interfere with the vibration damping performance of the coil spring type vibration damping material 18. However, since the vibration damping ability of the coil spring type vibration damping material 18 is not sufficient when the equipment vibrates greatly such as when the equipment is started and stopped, the rubber body 25 makes contact with the upper support member 15 and slides. And quickly damp the vibration. The spring characteristic of the snubber 19 is non-linear and has a property of becoming hard as the deformation of the rubber body 25 increases. Therefore, in order to prevent damage to the piping of the gas heat pump air conditioner outdoor unit or the like, it is particularly suitable when vibration fluctuation is required to be as small as possible and the natural frequency is about several Hz.
The protrusion 26 provided on the rubber body 25 has a spring action, and when the protrusion 26 contacts the upper support member 15, the upper support member 15
It has the effect of preventing an increase in the displacement of the rubber and of quickly ending the shaking by the damping force of the rubber.

The vibration absorbing device according to the first aspect of the present invention is not limited to the coil spring type vibration damping material and the snubber shown in the above-mentioned embodiment, but includes, for example, a normal vibration damping rubber. It is a thing.

Further, the upper support member 15 and the lower support member 16 of the present invention are not limited to the vibration absorbing device. For example, an earthquake-proof stopper 27 having a function of preventing the device from falling by fixing the device to the floor surface may be provided, assuming a large vibration such as an earthquake that causes the device to drop from the vibration-proof frame. As shown in FIG. 2, the seismic resistant stoppers 27 are located at both ends of the upper and lower support members 15 and 16, and are composed of bolts 28, nuts 29, 29, 29, and washers 30. Bolt 28
Is fixed to the lower support member 16 by nuts 29, 29. The upper support member 15 is provided with a hole slightly larger than the diameter of the bolt, and the bolt 28 is attached to this hole by a washer 30 and a nut 29 leaving a margin for vibration. By providing this allowance, normal vibration can be isolated and damped by the vibration absorber. The vibration absorbing device 17 and the seismic resistant stopper 27 as described above are arranged along the longitudinal direction of the elongated upper and lower support members 15 and 16.

[0014]

The invention according to claim 1 is one in which a plurality of elongated vibration damping units are arranged in parallel under the bottom of the device.
The size and weight of the anti-vibration stand are reduced, and manufacturing costs, distribution, transportation, and inventory costs are reduced, which improves economic efficiency. Further, at the time of construction, it is not necessary to prepare various mounts depending on the shape of the bottom surface of the device, so that workability is improved. Further, unlike the conventional frame-shaped vibration isolation frame, vibration does not propagate through the frame and extend to the entire bottom surface of the device, so that resonance of the frame is prevented and deterioration of the vibration isolation characteristics is prevented. Further, in the invention according to claim 2, since the vibration-proof frame is provided with a coil spring type vibration-proof material for preventing transmission of normal vibration, a snubber for damping large vibrations, and an earthquake-proof stopper for preventing overturning, Vibrations and large vibrations can be effectively dampened and damped, and the pedestal has sufficient stability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting state of a vibration isolation frame of the present invention.

FIG. 2 is a front view showing an embodiment of the vibration-proof frame of the present invention.

FIG. 3 is a cross-sectional view of a vibration damping material used in one embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional vibration-proof frame.

[Explanation of symbols]

 10 ... Vibration isolation stand 11 ... Equipment 14 ... Vibration isolation unit 15 ... Upper support member 16 ... Lower support member 17 ... Vibration absorber 18 ... Coil spring type vibration isolator 19 ... Snubber 27 ... Earthquake-proof stopper

Claims (2)

[Claims] 1. A vibration-isolating stand equipped with a device that emits vibration, wherein a vibration-absorbing device is interposed between an elongated upper support member and a lower support member to form a vibration-isolating unit. An anti-vibration stand, wherein a plurality of them are arranged in parallel under the bottom surface of the device. 2. An upper support member for mounting a device that emits vibration, a lower support member provided so as to face the upper support member, a vibration absorbing device and a seismic resistant member between the upper support member and the lower support member. In the anti-vibration mount with a stopper,
The vibration absorbing device includes a coil spring type vibration damping material in which an upper cover arranged on the upper supporting member and a lower cover arranged on the lower supporting member are fitted via a coil spring, An anti-vibration mount comprising: a snubber having a rubber body on an upper end of a bolt fixed to a lower support member.