JP6480220B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device used in a building, and more particularly, to a vibration damping device for a building that reduces horizontal vibrations of the building due to wind, traffic vibrations, small earthquakes, and the like.

  The problem that the building vibrates in the horizontal direction due to winds received by the building, traffic vibrations caused by automobiles, railroads, airplanes, etc., significantly impairs the habitability. Particularly in a small house such as a general house, especially a prefab house, a means for preventing shaking is strongly desired. Therefore, passive vibration damping devices and active vibration damping devices for reducing these fluctuations have been devised and partially put into practical use. In general, an active damping device is more effective than a passive damping device. However, the conventional active vibration control device is intended for relatively large buildings, towers, and the like, and the specifications include weight weight of several tons to several hundred tons, natural frequency of about 0.2 to 1.0 Hz, The maximum displacement is about ± 300 to ± 1000 mm.

  There are three types of weight support methods: (1) rail-roller method, (2) flier method, and (3) multistage laminated rubber method, and an oil damper is mainly used as a damping device. These devices naturally have to be large, and as a result, the cost increases, and it has been difficult to apply them to general small buildings.

The specifications of the vibration control device for a prefabricated house are a weight weight of 100 kgf, a natural frequency of about 3 to 7 Hz, and a maximum displacement of about 10 mm. For example, (1) In the rail / roller system, the rolling resistance and the like are larger than the weight of the weight, so that the performance deteriorates against minute vibrations.
(2) The length of the pretend is too short in the pretend system.
(3) Since the multi-stage laminated rubber system is light in weight and has little displacement, it is not necessary to make it multi-stage.
Also, an oil damper as a damping device is not suitable due to seal resistance or the like. Furthermore, since the installation space is limited, it is necessary to make the shape suitable for the space, but it is extremely difficult. Thus, the present situation is that a vibration damping device for a horizontal direction effective for a relatively small-scale building such as a prefabricated house, which is mainly targeted by the present invention, has not been developed yet.

  In addition, as a conventional building vibration control device, a rod-shaped weight having a rectangular cross section, a laminated rubber that supports the weight while giving a horizontal restoring force to the weight, and a damping material that gives a damping force to the horizontal movement of the weight There is a vibration damping device for reducing horizontal vibration of a building, which includes an auxiliary spring for adjusting the natural frequency of the weight in the horizontal direction and a stopper for preventing excessive displacement and dropping of the weight (for example, patents) Reference 1).

JP-A-8-128229

  By the way, in the vibration damping device described in Patent Document 1, the weight supported by the laminated rubber is obtained by fixing a weight having a rectangular cross section on the upper surface of the square pipe, as shown in FIG. It is difficult to fine-tune the adjustment and the manufacturing is complicated, and the work of fixing a heavy weight with a plurality of bolts and nuts on the upper surface in the square pipe is inferior in workability.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a vibration damping device that can effectively and at low cost reduce vibrations in the horizontal direction of a building, particularly a unit building. It is to provide. Another object of the present invention is to provide a vibration damping device in which a weight, which is a heavy object, is composed of a plurality of members, and the weight of the weight can be optimally adjusted according to the building shape.

In order to achieve the above object, a vibration damping device according to the present invention includes an installation base, a weight supported by the base so as to be horizontally displaceable via a laminated rubber, and a gap between the base and the weight. A damping member installed on the base, an auxiliary spring for restoring the weight to a predetermined position with respect to the base, and a stopper for preventing the weight from being excessively displaced and falling off. , is composed of a plurality of weight members which are accommodated in receiving member, the stopper is characterized Rukoto includes a frame portion having a shape which surrounds the longitudinal ends of the weight.

As another aspect of the vibration damping device according to the present invention, a rod-shaped weight having a rectangular plane, a laminated rubber that supports the weight and gives a horizontal restoring force to the weight, and against the horizontal movement of the weight A damping material for imparting damping force, an auxiliary spring for adjusting the natural frequency of the weight in the horizontal direction, and a stopper for preventing the weight from being excessively displaced and falling off. , is composed of a plurality of weight members which are accommodated in receiving member, the stopper is characterized Rukoto includes a frame portion having a shape which surrounds the longitudinal ends of the weight.

  In the vibration damping device of the present invention configured as described above, the weight is composed of a plurality of weight members and a receiver that accommodates the weight member, so that it has a weight in comparison with the case where it is composed of one heavy member. A thing can be divided | segmented and workability can be improved. Further, by adjusting the plurality of weight members and accommodating them in the receiver, the weight weight can be optimally adjusted according to the structure and scale of the building.

  Moreover, as a preferable specific aspect of the vibration damping device according to the present invention, the receiver is formed of a C-shaped steel or a groove-shaped steel that opens to the top, and a plurality of weights that are formed of a plate material in the opening. The members are stacked and accommodated. In the vibration damping device of the present invention configured as described above, a plurality of weight members formed of plate materials are stacked and accommodated in the opening of the C-shaped steel or the groove-shaped steel that opens at the top, so that the weight is manufactured. Becomes easy.

  Furthermore, as another preferable specific aspect of the vibration damping device according to the present invention, the receiver is formed of a C-shaped steel or a groove-shaped steel opening in an upper portion, and is formed of a block material in the opening. The plurality of weight members are arranged side by side and stored. In the vibration damping device of the present invention configured as described above, a plurality of weight members formed of a block material are accommodated side by side in an opening of a C-shaped steel or a grooved steel that opens at the top, so that the weight is manufactured. It becomes easy.

  The plurality of weight members are preferably fixed to the receiver with bolts and nuts. According to this configuration, since the plurality of weight members constituting the weight are integrated by being fixed to the receiver by the bolts and nuts, the damping function can be exhibited as one weight having a predetermined weight.

  In addition, it is preferable that the receiver includes an attachment portion for the laminated rubber. According to this configuration, the receiving body and the laminated rubber that constitute the weight can be efficiently connected, and the weight support portion can be reinforced and stably supported.

  Furthermore, it is preferable that the said damping device is fixed between the beams of a building by the said base. According to this configuration, the vibration damping device can be efficiently installed in the building by fixing the base of the vibration damping device between the beams of the building.

  The vibration damping device of the present invention can easily produce the weight which is the main component, and can reduce the cost. Further, the weight of the weight can be easily adjusted, and the optimum natural frequency can be designed in accordance with the scale, shape, etc. of the building to be installed.

BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the damping device which concerns on this invention is shown, (a) is the top view which abbreviate | omitted one part, (b) is the front view. The principal part enlarged plan view of FIG. The front view of FIG. FIG. 4 is a left side view of FIG. 3. The principal part top view of other embodiment of the damping device which concerns on this invention. The front view of FIG. The left view of FIG. The principal part top view of other embodiment of the damping device which concerns on this invention. The front view of FIG. The left view of FIG.

  Hereinafter, an embodiment of a vibration damping device according to the present invention will be described in detail with reference to the drawings. 1 is a plan view and a front view in which a part of the vibration damping device according to the present embodiment is omitted, FIG. 2 is an enlarged plan view of a main part of FIG. 1, FIG. 3 is a front view of FIG. FIG. 4 is a left side view of FIG. 3.

  1 to 4, the vibration damping device 1 reduces horizontal vibration due to wind received by a building, traffic vibration generated due to movement of an automobile, a railway vehicle, and the like. The vibration damping device 1 basically includes installation bases 2 and 2 for fixing to a building, and a weight 10 supported so as to be relatively displaceable in the horizontal direction with respect to the bases 2 and 2. . The weight 10 is supported so as to be relatively displaceable with respect to the bases 2 and 2 along a horizontal plane formed by an X direction which is a long side direction thereof and a Y direction perpendicular thereto.

  The bases 2 and 2 support both end portions of the weight 10, and include fixing portions 2a and 2a for fixing the vibration damping device 1 to the building, and frame portions 2b having a shape surrounding both end portions of the weight 10. 2b, both ends of the weight 10 are positioned inside the frame portion 2b that is B-shaped when viewed from the side, and the weight 10 can be displaced in the horizontal direction without contacting the frame portion 2b. Yes. The bases 2 and 2 are fixed to the pillars and beams of the building through the through holes for fixing the bases 2 and 2.

  The weight 10 is supported on the bases 2 and 2 by laminated rubbers 3 and 3 and dampers 4 and 4 as damping materials so as to be relatively displaceable in the horizontal direction. The laminated rubbers 3 and 3 are located below both ends of the weight 10 in the longitudinal direction, and are installed between the bases 2 and 2 and the weight 10 to support the load of the weight 10. As the laminated rubbers 3 and 3, it is preferable to use natural rubber, and laminated rubbers with particularly low friction are preferred. In particular, it is preferable to use a laminated rubber with little friction because the weight 10 can be displaced and exhibit a damping function even when minute vibrations are applied to the damping device 1. The laminated rubber 3 has a function of suppressing the displacement and applying a restoring force to the horizontal displacement of the weight 10 with respect to the bases 2 and 2. The laminated rubber may be a laminated rubber and metal plate.

  The dampers 4 and 4 as the damping material are made of, for example, a resin having viscoelasticity, and an acrylic damper is preferable as an example. The dampers 4 and 4 have a function of giving a damping force to the horizontal displacement of the weight 10 with respect to the bases 2 and 2. The attenuating materials 4 and 4 are made of a viscous material, a viscoelastic material, or the like, and specifically, are made of various synthetic rubbers such as SBR, NBR, and silicone rubber, and plastic materials such as polyurethane, polyethylene, polypropylene, polystyrene, polyamide, and polyester. .

  The vibration damping device 1 includes an auxiliary spring 5 for adjusting the natural frequency of the weight 10 in the horizontal direction. For example, when traffic vibration is transmitted to the vibration damping device 1, the weight 10 is relatively horizontal with respect to the bases 2 and 2 along a horizontal plane formed by the X direction and the Y direction perpendicular thereto. The auxiliary spring 5 includes four tension springs 5a and 5b that are fixed along the X direction, and four tension springs 5c and 5d that are fixed along the Y direction. .

  Specifically, four protrusions 16a are provided to protrude from the side surface of the C-shaped steel 16 constituting the receiving body 15 (described later) of the weight 10, and the support fixed to the protrusion 2 and the frame 2b of the base 2 is supported. Four tension springs 5a and 5b are stretched along the X direction between the material 2c. Also, one protrusion 17a protrudes from an end member 17 (to be described later) on one end face of the weight 10, and two tensions are provided between this protrusion and the support member 2c of the frame 2b of the base 2. The springs 5c and 5d are stretched along the Y direction, and one projection 17a projects from the end member 17 on the other end face of the weight 10, and is fixed to the frame 2b of the base 2 with this projection as the center. Two tension springs 5c, 5d are stretched along the Y direction between the support member 2c.

  The auxiliary spring 5 including the tension springs 5a, 5b, 5c, and 5d adjusts these tensions so that the weight 10 is brought into contact with the frame portions 2b and 2b at predetermined positions in the frame portions 2b and 2b of the base 2. It can be arranged without doing. Further, the auxiliary spring 5 has a function of holding the weight 10 at a predetermined position with respect to the bases 2 and 2 of the vibration damping device 1, and a function of restoring the weight 10 to a predetermined position when the weight 10 is displaced in the horizontal direction. It is what has. The tension springs 5a and 5b function in the X direction, and the tension springs 5c and 5d function in the Y direction.

  The vibration damping device 1 includes stoppers 6 and 6 for preventing excessive displacement and dropping of the weight 10 due to a strong earthquake or the like. The stoppers 6 and 6 are formed of metal square bars, and are fixed to the lower surface of the weight 10 with a predetermined distance L (see FIG. 3) inside the frame portions 2 b and 2 b of the bases 2 and 2. Therefore, as shown in FIG. 3, when the weight 10 is moved by a distance L along the long side direction (X direction), the stoppers 6 and 6 are prevented from moving against the frame 2b of the base 2 and cannot be displaced any more. It has a configuration. In the Y direction, the weight 10 can move until it hits the inner surface of the frame 2b. Accordingly, the stoppers 6 and 6 are for preventing the weight 10 from being excessively displaced and dropped off.

  The vibration damping device 1 of the present embodiment includes a temporary fixing device for the weight 10. This temporary fixing device includes two fixing bolts 7 and 7 screwed in the vertical direction on the upper surfaces of the frame portions 2b and 2b of the bases 2 and 2, respectively. The fixing bolts 7 are positioned on the upper surface of the weight 10 and are locked by pressing the weight 10 downward by screwing the fixing bolt. By fixing the weight 10, it is possible to prevent the weight 10 from moving horizontally during the conveyance of the vibration damping device 1, thereby enabling stable conveyance.

  The weight 10 is basically a rod having a rectangular plane, and includes a receiving body 15 and a plurality of weight members 11, 12... Accommodated in the receiving body 15. The receiver 15 is formed of a C-shaped steel 16 that opens upward, and has a case-like shape with an upper opening in which both end portions in the longitudinal direction (X direction) of the C-shaped steel 16 are closed by end members 17 and 17. . In this embodiment, the end members 17 and 17 are fixed to the end portion of the C-shaped steel 16 by welding.

  Attachment portions 18 and 18 of laminated rubbers 3 and 3 formed of a metal plate material are fixed to both ends of the C-shaped steel 16 constituting the receiver 15. The attachment portions 18 and 18 are fixed to the bottom of the C-shaped steel 16 by welding or the like, and screw portions for fixing the upper portions of the laminated rubbers 3 and 3 are formed on the attachment portion. The lower portions of the laminated rubbers 3 and 3 are fixed to the bases 2 and 2 with fixing screws. Thus, the laminated rubbers 3 and 3 are fixed between the bases 2 and 2 and the mounting portions 18 and 18 fixed to the C-shaped steel 16 constituting the weight 10 so that the weight 10 can be displaced in the horizontal direction. So that it is fixed. The dampers 4 and 4 are also fixed between the mounting portions 18 and 18 and the bases 2 and 2. The mounting portions 18 and 18 reinforce the receiving body 15 to support the weight 10 which is a heavy object.

  The plurality of weight members 11, 12,... Are preferably made of a metal plate material, and a pre-plated steel plate is preferably used. In the present embodiment, 12 layers are stacked, and the weight 10 is divided into two in the longitudinal direction, and a total of 24 weight members are used. For this reason, when the weight 10 is viewed from above, a gap s is formed at the center as shown in FIG. The weight 10 is a structure in which a large number of weight members are accommodated in a receiving body 15 and laminated, and are fixed by bolts and nuts penetrating the receiving body 15 and the large number of weight members.

  As a plurality of weight members, the metal plate material is composed of a number of plate materials 11, 11 placed at the bottom and plate materials 12, 12,. In order to avoid the mounting portions 18, the plate material 11, 11 placed at the bottom is set to have a length in the longitudinal direction smaller than half of the length of the receiver 15, and the other plate members 12, 12. It is set to be equal to half of the length. A large number of the stacked plate members 11, 12... Are fixed by fixing bolt nuts 19, 19 through a through hole penetrating with the C-shaped steel 16 of the receiver 15, and the weight 10 is integrated.

  The structure and function of each component of the vibration damping device 1 will be described in more detail. The vibration damping device 1 basically needs to adjust the natural frequency of the weight having a mass of about 0.5 to 3.0% of the effective mass of the structure substantially equal to the natural frequency of the building. In the vibration damping device 1, this adjustment is performed by adjusting the rigidity of the laminated rubber 3, 3 installed between the bases 2, 2 and the weight 10 and the auxiliary springs 5 a, 5 b. The damping device 1 requires a damping ratio of about 6 to 15%. In this device, the dampers 4 and 4 installed between the bases 2 and 2 and the weight 10 or a viscoelastic body are used. Gives moderate attenuation.

  The vibration damping device 1 of the present invention is installed, for example, between columns or between beams of a building, and more specifically, using screw holes for mounting brackets, bases, etc. on the back of the ceiling or under the floor In some cases, it can be attached directly, and in some cases, it can be attached via a mounting jig. There is no restriction | limiting in particular in the number of attachments, Although it determines suitably by the scale and shape of a building, and a vibration condition, installing two or more in a different direction is effective.

  Although there is no restriction | limiting in particular in the external dimension of the damping device 1 of this invention, It determines in consideration of installation locations, such as the back of the ceiling of a building, under the floor, and between beams. For example, a thin and long rod-like weight 10 having a longitudinal direction of about 1 to 5 m, a width of 10 to 40 cm and a height of about 8 to 30 cm is practical, but is not limited thereto. By adopting the above-described configuration, the vibration damping device 1 of the present invention can have a low height suitable for mounting between beams during prefabricated house construction. The damping device 1 is set to have a maximum displacement plus or minus about 5 mm to about 10 to several mm, and the natural frequency ranges from about 2 to 5 Hz in the long side direction of the weight 10 and from about 1 to 4 Hz in the short side direction. It is set according to.

  The weight 10 of the vibration damping device 1 of the present embodiment is manufactured by a large number of weight members 11, 12 formed of a metal plate material on a receiver 15 constituted by a C-shaped steel 16 and end members 17, 17 at both ends. Are stacked one after another from the upper opening of the receiver 15. First, the short weight members 11 and 11 are inserted while avoiding the attachment portions 18 and 18 of the laminated rubber in the receiver 15. At this time, a gap s is formed between the weight members 11 and 11 at the center of the receiver 15. Thereafter, the long weight members 12, 12 are inserted inside the end members 17, 17, and the gap s is similarly formed. Further, after inserting a predetermined number of the long weight members 12, 12,... And laminating the predetermined number, a through hole penetrating the weight members 11, 12,. Bolts 19 are inserted into and fixed with nuts.

  When adjusting the weight of the weight 10, the number of weight members 11, 12... Is increased or decreased to a desired weight, and fixed with bolts and nuts 19 and 19. In the present embodiment, the weight can be finely adjusted by increasing or decreasing the 24 weight members 11, 12. When installing the damping device 1 of this invention between the beams of the ceiling upper part, it is preferable to arrange | position one or more each in two directions, for example, a girder direction and a wife direction. In the present embodiment, although not shown, the plate members 11, 12... Are fixed by a total of six bolt nuts 19, 19.

  The operation of the vibration damping device 1 of the present embodiment configured as described above will be described below. In the vibration damping device 1, the weight 10 is supported so as to be displaceable in the horizontal direction with respect to the bases 2 and 2. When horizontal vibration such as seismic motion or traffic vibration is applied to the vibration damping device 1, the weight 10 is displaced in the horizontal direction with respect to the bases 2 and 2 and exhibits a buffering function. For example, when vibration in the X direction that is the longitudinal direction of the weight 10 is applied to the vibration damping device 1, the auxiliary springs 5 a and 5 b in the X direction expand and contract and buffer. Further, when the vibration in the Y direction is applied to the vibration damping device 1, the auxiliary springs 5c and 5d in the Y direction expand and contract and buffer. When vibrations in any direction on the XY plane are applied, the auxiliary springs 5a, 5b, 5c in the X direction and the Y direction expand and contract and buffer.

  When the weight 10 is displaced in the horizontal direction, the laminated rubber 3 and 3 installed between the bases 2 and 2 and the weight 10 are deformed and buffered, and a restoring force is applied, and the damping members 4 and 4 are also deformed and attenuated. Apply force to buffer against horizontal vibration. Further, tension is applied to the weight 10 by the auxiliary springs 5a and 5b stretched along the X direction of the weight 10 and the auxiliary springs 5c and 5d stretched along the Y direction.

  In the vibration damping device 1 of the present invention, the weight 10 is configured by accommodating a plurality of weight members 11, 12. For this reason, the weight 10 with a heavy weight can be divided | segmented, for example, can be divided into the receiving body 15 and a some weight member, and can be reduced in weight, and conveyance and installation work can be made easy. Then, the weight members 11, 12,... Are sequentially stacked and accommodated from the upper opening of the receiver 15 made of the C-shaped steel 16, and fixed to the receiver 15 with the fixing bolt nuts 19, 19,. it can.

  Further, as a plurality of weight members, weight members 11, 12,... Made of a plurality of metal plate members are laminated and fixed with bolts and nuts 19 to constitute the weight 10, so that it is compared with a weight integrally manufactured by casting. Cost can be reduced. Furthermore, since a pre-plated steel plate can be adopted as the metal plate material, the workability of the member is improved, the durability is improved, and the function as a vibration damping device can be realized at a low price.

  Further, when the weight members 11, 12... Made of a large number of sheets are accommodated in the receiver 15, the weight of the weight 10 can be adjusted by adjusting the number of the weight members, and the damping function of the damping device 1 can be adjusted. Can do. Specifically, it is possible to easily set the weight 10 to the optimum weight according to the shape, scale, etc. of the building where the vibration damping device 1 is installed. The weights 10 can be integrated by fixing the bolt nuts 19, 19 through the through holes of a number of weight members in a state where the weight is adjusted.

  Furthermore, by installing a plurality of vibration control devices 1 in one building and arranging the types with reduced weight weight in addition to the main vibration control device, the vibration control function can be strengthened against a wider range of vibrations. . When this vibration damping device 1 is installed on the ceiling of a building, it is possible to reduce the number of parts by integrating with the steel ceiling edge.

  Another embodiment of the present invention will be described in detail with reference to FIGS. FIG. 5 is a front view of an essential part of another embodiment of the vibration damping device according to the present invention, FIG. 6 is a front view of FIG. 5, and FIG. 7 is a left side view of FIG. Note that this embodiment is different from the above-described embodiment in that the form of the auxiliary spring and the base that supports the weight so as to be horizontally displaced are different. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  The vibration damping device 1A of this embodiment is different from the above embodiment in the shape of the base and the form of the auxiliary spring. The bases 2A and 2A have a flat plate shape, and support members 22 and 22 are fixed to the upper surface by screwing or the like with a support plate 21 and a spacer made of laminated rubber interposed therebetween. The support members 22 and 22 are formed of metal square bars that are long in the X direction. The laminated rubbers 3 and 3 are configured to be fixed between the support plates 21 on the bases 2 </ b> A and 2 </ b> A and the attachment portions 18 and 18 of the C-shaped steel 16 constituting the weight 10. The dampers 4 and 4 are also fixed between the support plate 21 and the mounting portions 18 and 18. A support bar 16b for receiving an auxiliary spring is fixed to the lower surface of the C-shaped steel 16 constituting the weight 10, and a support bar 16c is similarly fixed to the central lower surface of both ends of the C-shaped steel 16.

  In this embodiment, tension springs 5a and 5b in the X direction are stretched between the support rods 22 and 22 fixed to the bases 2A and 2A and the support rod 16b fixed to the C-shaped steel 16, and the support member 22 is stretched. , 22 and the support bar 16c, tension springs 5c, 5d in the Y direction are stretched. Further, stoppers 6A and 6A are fixed at the center of the lower surface of the C-shaped steel 16 and face the bases 2A and 2A at a predetermined distance L. In this embodiment, the stopper is a bent metal plate, and the stoppers 6A and 6A are provided only in the X direction.

  The vibration damping device 1 </ b> A configured as described above has a simplified configuration of the base 2 </ b> A compared to the above-described embodiment. For this reason, the cost can be further reduced, and it is not necessary to insert the weight 10 into the frame of the substantially square base, so that the assembling property can be improved. About the structure of the weight 10, it is the same structure as the said embodiment.

  Still another embodiment of the present invention will be described in detail with reference to FIGS. 8 is a plan view of an essential part of still another embodiment of the vibration damping device according to the present invention, FIG. 9 is a front view of FIG. 8, and FIG. 10 is a left side view of FIG. Note that this embodiment is characterized in that the base for supporting the weight so as to be horizontally displaced is U-shaped in a side view as compared with the above-described embodiment. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  The vibration damping device 1B of this embodiment includes U-shaped support frames 25, 25 in a side view, and the support frames 25, 25 are fixed to flat bases 2B, 2B. Support members 26 and 26 are fixed so as to face the inner side of the upper end portion of the support frame 25. The support members 26 and 26 are formed of metal square bars that are long in the X direction. The laminated rubbers 3 and 3 are configured to be fixed between the central flat portions of the support frames 25 and 25 on the bases 2 </ b> B and 2 </ b> B and the mounting portions 18 and 18 of the C-shaped steel 16 constituting the weight 10. . The dampers 4 and 4 are also fixed between the support frames 25 and 25 and the mounting portions 18 and 18. Further, support rods 16d and 16d for receiving auxiliary springs are fixed to the side surfaces of the C-shaped steel 16 constituting the weight 10, and the support rod 16e is similarly fixed at the center of the end member 17 that closes both ends of the C-shaped steel 16. Has been.

  In this embodiment, the tension springs 5a, 5b in the X direction are placed between the support bars 26, 26 of the support frames 25, 25 fixed to the base 2B and the support bars 16d, 16d fixed to the side surfaces of the C-shaped steel 16. The tension springs 5c and 5d in the Y direction are stretched doubly between the support members 26 and 26 and the support bar 16e. Further, stoppers 6B and 6B are fixed to the center of the lower surface of the C-shaped steel 16 and face the bases 2B and 2B at a predetermined interval L. In this embodiment, the stopper is a bent metal plate. Further, the support members 26 and 26 function in the stopper in the Y direction, and the gap between the support material and the side surface of the C-shaped steel 16 is within an allowable range of horizontal displacement.

  The vibration damping device 1 </ b> B configured as described above has a simplified configuration of the bases 2 </ b> B and 2 </ b> B as compared with the above-described embodiment, and the Y-shaped support frames 25 and 25 and the support members 26 and 26 are Y It has a direction stopper function. For this reason, the cost can be further reduced, and the weight 10 can be inserted into the upper openings of the U-shaped support frames 25, 25, so that the assemblability can be improved.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, although the example of a plurality of metal plate members is shown as the plurality of weight members, a plurality of metal block members may be arranged side by side in a receiving body and fixed. Moreover, you may use together a board | plate material and a block material.

  Although the example which made the case shape with the C-shaped steel 16 and the end members 17 and 17 was shown as the receiving body 15, you may comprise by the box-shaped receiving body with which upper opening was integrated. For example, a metal plate material may be press-molded to integrally form a bottom surface, a wall surface in the long side direction, and a wall surface in the short side direction. Further, a plate material may be inserted and fixed in a metal square pipe.

  1, 1A, 1B: Damping device, 2, 2A, 2B: Base, 2b: Frame part (stopper), 3: Laminated rubber, 4: Damper (damping material), 5, 5a, 5b, 5c, 5d: Auxiliary Spring, 6, 6A, 6B: Stopper, 7: Fixing bolt (temporary fixing device), 10: Weight, 11, 12: Plate material (weight member), 15: Receptor, 16: C-shaped steel, 17: End member, 18: Laminated rubber mounting part, 19: Fixing bolt and nut, 25: Support frame (stopper)

Claims (7)

A base for installation, a weight supported by the base via a laminated rubber so as to be horizontally displaceable, a damping material installed between the base and the weight, and the weight with respect to the base A damping device comprising an auxiliary spring for restoring to a predetermined position, and a stopper for preventing an excessive displacement and dropping of the weight ,
The weight includes a receiver and a plurality of weight members accommodated in the receiver ,
The stopper, the vibration damping device according to claim Rukoto includes a frame portion having a shape which surrounds the longitudinal ends of the weight. A rod-shaped weight having a rectangular plane, a laminated rubber that supports the weight while providing a horizontal restoring force to the weight, a damping material that imparts a damping force to the horizontal movement of the weight, and a horizontal characteristic of the weight A damping device comprising an auxiliary spring for adjusting the frequency, and a stopper for preventing excessive displacement and dropping of the weight,
The weight includes a receiver and a plurality of weight members accommodated in the receiver ,
The stopper, the vibration damping device according to claim Rukoto includes a frame portion having a shape which surrounds the longitudinal ends of the weight.   The said receiving body is formed by C-shaped steel or grooved steel opening at the top, and the plurality of weight members formed of plate material are stacked and accommodated in the opening. 2. The vibration damping device according to 2.   The receiving body is formed of C-shaped steel or channel-shaped steel that opens at an upper portion, and the plurality of weight members formed of a block material are accommodated in the opening in parallel. The vibration damping device according to 1 or 2. It said plurality of weight members, the damping device according to any one of claims 1 to 4, characterized in that it is fixed by bolts and nuts to the receiving body. The damping device according to any one of claims 1 to 5, wherein the receiver includes an attachment portion for the laminated rubber. The said damping device is fixed between the beams of a building by the said base, The damping device as described in any one of Claim 1, 3, 4, 5, 6 characterized by the above-mentioned.

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