JPH04113046A - Vibration-proof device - Google Patents

Abstract

PURPOSE:To exhibit a bigger capacity of bearing a vertical load and an excellent vibration- proof capacity by providing a supporting body for a pair of roller groups arranged up and down in a condition of rollers crossing each other, and a pair of guides having rolling surfaces for receiving the rollers and protruded walls. CONSTITUTION:An upper roller group 7 has a plurality of rollers 10,..., made of a hard material, lined up in parallel close together in the X direction and supported by a shaft in a freely rotatable manner in the upper portion of a frame body 9, and a lower roller group 8 has a plurality of rollers 11,..., made of a hard material, lined up in parallel close together in the Y direction and supported by a shaft in a freely rotatable manner in the bottom portion of the frame body 9. Each roller 10,... of the upper roller group 7 and each roller 11,... of the lower roller group 8 are arranged up and down with the rollers crossing each other and the upper and the lower roller groups 7, 8 are protruded beyond the upper and lower opening ends of the frame body 9. Upper and lower guides 5, 6 have flat shaped rolling surfaces 12, 13 to receive each roller 10,... 11,... of the upper and the lower roller groups 7, 8 and protruded walls 18, 19 protruding/erecting beyond/on both sides of the rolling surfaces 12, 13 are formed to prevent rollers 10,... 11,... from departing from the rolling surfaces 12, 13 by regulating the rolling direction of the rollers 10,..., 11,... on the rolling surfaces 12, 13.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vibration isolating device, and more specifically, the present invention relates to a vibration isolating device, and more specifically, the present invention relates to a vibration isolating device. The equipment is supported horizontally on a lower structure such as a motor vehicle to prevent it from stopping, overturning, or breaking electrical wiring due to traffic vibrations or earthquakes. This invention relates to a vibration isolator for protection.

[Conventional technology]

Vibration isolators are used to protect computers, precision measuring instruments, precision processing instruments, and other equipment from traffic vibrations and earthquake motions.
For example, there is one disclosed in Japanese Patent Application Laid-Open No. 2-35140. In this system, a sphere is interposed between the upper and lower structures, and the upper structure is horizontally swingably supported on the lower structure by the sphere, and the upper and lower structures supported by the sphere are moved in the horizontal direction. By connecting the upper structure with a spring that exerts restoring force, the upper structure is given restoring performance. In this way, the above-mentioned vibration isolator is a combination of a sphere, a flat surface of the upper and lower structures, and a spring. By forming a ball bearing or using a sphere made of an elastic body (viscoelastic body), ■Improves the conformity of the ball bearing to the upper and lower surfaces of the support part;■
It provides performance features such as being able to prevent rotational noise even without cleansing oil.

[Problem to be solved by the invention]

By the way, the vibration isolator disclosed in JP-A-2-35140 has the above-mentioned advantages (2), but when a load is applied, because it is spherical, the pressure-receiving surface is small and elastic (viscous). The strain of the elastic body increased, causing problems with load-bearing performance. Furthermore, it is difficult to maintain the position of the sphere at the center of the device, which is impractical.

Therefore, the present invention was proposed in view of the above problems, and its purpose is to provide a practical vibration isolating device that combines a plurality of rollers and a plane of an upper and lower structure. be.

[Means to solve the problem]

Technical means for achieving the above object of the present invention is to support a pair of roller groups in which a plurality of rollers are arranged in parallel, arranged one above the other with the rollers of each roller group orthogonal to each other, and supported on a frame. A supporting body, placed above and below the supporting body,
a pair of guides each having a rolling surface for receiving each roller of the roller group protruding from the upper and lower opening ends of the frame body, and having a projecting wall for regulating the rolling range of the roller group on the rolling surface; It consists of

[Effect]

In the vibration isolating device according to the present invention, each roller of the pair of roller groups can roll on the rolling surface of the guide in the X direction and the Y direction, so that the support body supporting the roller group on the frame is in the XY plane. can move in any direction. At this time, since the rolling surface of the guide receives a group of rollers in which a plurality of rollers are arranged in parallel, a large vertical load bearing capacity is exhibited. Further, since the rolling range of the rollers rolling on the rolling surface of the guide is restricted by the protruding wall, the rollers do not deviate from the rolling surface. In this way, when traffic vibrations or seismic vibrations occur, horizontal vibrations are quickly absorbed and excellent vibration isolation is achieved.

〔Example〕

Embodiments of the vibration isolator according to the present invention will be described with reference to FIGS. 1 to 8. The embodiment shown in the figure shows a case where the vibration isolator of the present invention is applied to floor vibration isolation.

The vibration isolator (1) of the embodiment shown in Figures 1 to 3 consists of a slab (2) which is a lower structure, and an upper part on which equipment such as computers, precision measuring instruments, and precision measuring instruments are placed. It is installed between the structure and the vibration-proof floor (3).

This vibration isolator (1) consists of a support (4) and its support (4).
) and the lower surface of the vibration-proof floor (3) and the slab (
2) A pair of upper and lower guides (5) each attached to the top surface
(6) (hereinafter referred to as upper and lower guides).

The support (4) has a structure in which a pair of roller groups (7) and (8) (hereinafter referred to as upper and lower roller groups) are arranged one above the other and supported by a metal frame (9). The upper roller group (7) includes a plurality of rollers (1) made of hard material such as metal.
0) (10)... are arranged closely in parallel in the X direction and rotatably supported on the upper part of the frame (9). On the other hand, the lower roller group (8) consists of a plurality of rollers (1)) (1)) made of hard materials such as metal that are arranged closely in parallel in the Y direction and rotated at the bottom of the frame (9). It is freely pivoted. In this way, each roller (10) (10)... of the upper roller group (7) and each roller (1)) (1))... of the lower roller group (8) are perpendicular to each other. and each roller (10) (10)...(1)) (1))... of the upper and lower roller groups (7) and (8) protrudes from the upper and lower opening ends of the frame (9). let

On the other hand, the upper and lower guides (5) and (6) are the rollers (10) and (10) of the upper and lower roller groups (7) and (8).
...(1))(1))(1))... It has a flat rolling surface (12) (13) that receives... (1))(1))(1))... in particular,
The high damping viscoelastic material ( 16) (17) are integrally adhered by vulcanization adhesive or the like, and the lower and upper surfaces of the viscoelastic bodies (16) and (17) are used as rolling surfaces (12) and (13). Guide base (14) for upper and lower guides (5) (6)
Both sides of (15) are bent into an L shape to form a viscoelastic body (
16) Projecting walls (1B) (18) (17) that protrude and stand up from both sides of the rolling surfaces (12) (13)
9) (19) is formed, and this projecting wall (18) (
18) (19) According to (19), the above rolling surface (1
2) Roller (10) on (13) (10)・
...(1)) (1))... by regulating its rolling direction (10) (10)...(1)) (
1))... to be prevented from deviating from the rolling surfaces (12) and (13).

Next, the operation of the vibration isolator (1) when traffic vibration or earthquake motion occurs will be explained below.

When receiving vibration input due to traffic vibration or earthquake motion, the lower guide (6) of the slab (2) will be displaced within the XY plane with respect to the upper guide (5) of the vibration-proof floor (3), which is in a stationary state. Considering that, each roller (1)) (1)) (1)) of the lower roller group (8) of the support (4) moves on the rolling surface (13) of the lower guide (6) by Each roller (10) of the upper roller group (7)
(10) ... is the rolling surface (12) of the upper guide (5)
The lower roller group (8) moves in the X direction on the lower guide (6) and the upper roller group (7) moves in the Y direction on the upper guide (5). Therefore, even if the lower guide (6) of the slab (2) moves in any direction on the XY plane, the upper guide (5) of the vibration-proof floor (3) can be held stationary. At this time, each roller (10) (10) of the upper and lower roller groups (7) (8)...
(1)) (1)) Rolling surfaces (12) (13) of the upper and lower guides (5) and (6) that roll against each other
) is made of a viscoelastic body (16) (17), so that the rollers (10) (10)...(1))
(1))... rolls while giving local deformation to the viscoelastic bodies (16) (17), and the rollers (10) (10)...
・(1)) The rolling motion of (1)), that is, the vibration, can be quickly damped, and there is no need to install a separate damper, which is normally required.

In this movement of the upper and lower roller groups (7) and (8), projecting walls (18) (18) (19) (1
9), each roller (10) (10)
... (1)) (1)) ... is regulated by the protruding wall (18) (18) (19) (19), so the rolling surface (12) (13) There is no deviation from this. In addition, the upper and lower roller groups (7) (8) are replaced by a plurality of rollers (10) (10)...(1)) (1
))... are arranged closely in parallel, it is possible to increase the vertical load bearing capacity of the support (4) consisting of the upper and lower roller groups (7) and (8), and the present applicant's According to experimental results, for example, it is possible to load 2000 to 5000 kgf in a 300 fl square plane space.

An example of floor vibration isolation in which the above-mentioned vibration isolation device (1) is actually used in a part of a building is shown in FIGS. 4 and 5. In this construction example,
As shown in the figure, a plurality of vibration isolators (1) (1), Place it through... Each vibration isolator (1) has a support body (4) that is connected to each roller (10) of the upper and lower roller groups (7) and (8).
10) Due to the rolling of (1)) (1))...
Since it is possible to move in any direction on the plane, there is no need to strictly align the X and Y directions of the upper and lower guides (5) and (6), and they can be moved freely in any direction depending on the design of the vibration isolation floor (3). Even if it is installed intentionally, there is no problem with the anti-vibration performance.

Further, the planar arrangement pattern of the vibration isolators (1), (1), etc. is designed based on the vertical load distribution based on the arrangement of the equipment placed on the vibration isolator floor (3). The vibration-proof floor above (
There are multiple restoring springs (20) between 3) and the slab (2).
(20)... are stretched horizontally at predetermined locations according to the design of the floor vibration isolation. This restoring spring (20) (20
) When the traffic vibration and earthquake motion subside due to the elastic force of the vibration isolator (1) (1)..., the support (4) (4)
...returns to its initial position. In addition, a gap is provided between the vibration-isolating floor (3) and the surrounding wall so that the vibration-isolating floor (3) can move due to input of horizontal vibration.
) and the wall surface, a bellows (21) is installed to close the gap.

Finally, another embodiment of the present invention will be described based on FIGS. 6 to 8. This embodiment differs from the previous embodiment only in the upper and lower guides (22) (23);
Since other parts including the support body (4) are the same, the same reference numerals will be given and duplicate explanation will be omitted.

Upper and lower guides (22) (23) in this example
As shown in Parts 6 to 8, the disc-shaped guide bases (24) and (25) are fixed to the lower surface of the vibration-proof floor (3) and the upper surface of the slab (2) with screws, etc. Highly damped viscoelastic bodies (26) (27) are pasted on the surfaces, and the lower and upper surfaces thereof are used as rolling surfaces (28) (29).
28) Ring-shaped projecting walls (30) (31) are attached to guide bases (24) (29) so as to surround the outer periphery of (29).
5) It is fixed integrally on the top. When receiving vibration input due to traffic vibration or earthquake motion, the roller (10) on the rolling surface (28) (29) is
(10)...(1))(1))(1))... by regulating the rolling range of the rollers (10) (10)...
(1)) (1))... is the rolling surface (28) (2
9) I try not to deviate from this. Here, the support (
Each roller (1) of the lower roller group (8) of 4) (1
Considering that ))... moves along the X direction,
As mentioned above, in order to prevent the rollers (1), (1))... from deviating from the rolling surface (29), the lower guide (23) is inserted from the end of the rectangular frame (9) of the support (4). Projection wall (31
) along the X direction must be set larger than the maximum half amplitude or designed half amplitude of the support (4), and the same is true for the upper kite (22). Like this upper and lower guide (22) (23)
By making it circular, when actually using the vibration isolator (1'), the upper and lower roller groups (
7) Each roller of (8) (10) (10)...(1
)) (1)) (1)) The installation direction of the vibration isolator (1') can be arbitrarily set regardless of the rolling direction of the vibration isolating device (1').

In addition, in the present invention, as in each of the above embodiments, the rolling surfaces (12) (13) (2B) (29) of the upper and lower guides (5) (6) (22) (23) are made of a viscoelastic material ( 16) (17) (26) (27) Although it is preferable to form the rolling surface (12) (13
) (2B) (29) is made of a viscoelastic material (although it may be formed of other materials.

In addition, upper and lower guides (5) (6) (22
) (23) rolling surface (12) (13) (28)
(29) as a viscoelastic body (16) (17) (2
6) In addition to forming in (27), each roller (10) of the upper and lower roller groups (7) and (8) of the support (4)
... (1)) ... The material itself or its surface may be made of a viscoelastic material.

〔Effect of the invention〕

According to the vibration isolating device of the present invention, a plurality of rollers are arranged in parallel to form a roller group, and this roller group is received by the rolling surface of the guide, so that a large vertical load bearing capacity can be exerted. can. Then, a pair of roller groups are arranged one above the other so that the rollers are orthogonal to each other, and each roller of the roller group rolls on the rolling surface of the guide in the X direction and the Y direction. The supporting body supported by the roller can move in all directions on the XY plane, and during this movement, the rolling range of the roller is restricted by the protruding wall of the guide, so that the roller does not deviate from the rolling surface. As a result, it is possible to provide a vibration isolating device of great practical value that is capable of achieving excellent vibration damping performance with a simple structure.

[Brief explanation of the drawing]

1st t! 1 is a sectional view taken along the line X-X in FIG. 2 showing an embodiment of the vibration isolator according to the present invention, FIG. 2 is a plan view of the vibration isolator with some omitted parts, and FIG. 2 is a cross-sectional view taken along the Y-Y line in Figure 2; Figure 4 is a plan view with some omitted parts showing an example of floor vibration isolation in which the vibration isolator is applied to a part of a building;
The figure is a sectional view of FIG. 4, FIG. 6 is a plan view with partially omitted parts showing another embodiment of the present invention, and FIG. 7 is a cross-sectional view of FIG.
FIG. 8 is a cross-sectional view taken along line Y--Y in FIG. 6. (1) (1°)-vibration isolator, (4)--support,
(5) (6) - Guide, (7) (8) - Roller group, (9) - Frame, (10) (1)) - Roller, (12) (13) - Rolling surface, ( 1B) (19L--Protruding wall, (22) (23)--Guide, (2B) (
29) --One rolling surface, (30) (31)・-Protruding wall. Patent applicant: Sumitomo Rubber Industries, Ltd.
Professor Gangwon Province
Sei Hiraike Figure 1 Y- Figure 3 Figure 4

Claims (1)

[Claims] (1) A support in which a pair of roller groups in which multiple rollers are arranged in parallel are arranged vertically with the rollers of each roller group orthogonal to each other and supported on a frame, and a support is arranged above and below the support. , a pair of guides having a rolling surface for receiving each roller of the roller group protruding from the upper and lower opening ends of the frame body, and provided with a projecting wall for regulating the rolling range of the roller group on the rolling surface. A vibration isolating device characterized by comprising: