JP2015055322A - Damping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damping device 15 capable of preventing an object M to absorb vibration from being fallen without replacing an existing vibration isolator 1.SOLUTION: This invention relates to a damping device 15 for limiting vibration of a vibration isolator 1 that comprises leg members 16 for receiving vibration of a second frame 9, resilient members 17 for attenuating vibration of the second frame 9 and connector members 18 for transmitting vibration of the second frame 9 to the leg members 16. The connector members 18 are arranged at the second frame 9 under utilization of assembling bolts B2 fixing an object M to absorb vibration to the second frame 9 and anchor bolts B1 for fixing the first frame to a mounting surface S, the leg members 16 are provided with the resilient members 17, the leg members 16 are arranged at the connector members 18 in such a way that the resilient members 17 may be oppositely faced against either the mounting surface S or the first frame 2 and a clearance C1 between each of the resilient members 17 and the mounting surface S or between each of the resilient members 17 and the first frame 2 can be adjusted.

Description

  The present invention relates to a vibration damping device. Specifically, the present invention relates to a vibration damping device.

  2. Description of the Related Art Conventionally, there has been known a vibration isolator that absorbs vibration from a vibration absorbing object such as an air conditioner outdoor unit or a generator installed on a rooftop of a building and suppresses vibration transmitted to the building. The vibration isolator is provided between the vibration absorption object and the installation surface of the vibration absorption object such as a rooftop of a building. The vibration isolator is a vibration of the upper frame by a vibration absorber (vibrator) provided between a lower frame (first frame) fixed to the installation surface and an upper frame (second frame) to which the object to be absorbed is fixed. Is configured to absorb vibration. For example, as described in Patent Document 1.

  The vibration isolator described in Patent Document 1 includes an upper frame movement amount regulating unit that regulates the movement amount of the upper frame when an external force in the vertical direction or the horizontal direction is applied to the vibration isolation device due to an earthquake or the like. Thereby, the vibration isolator can prevent the vibration absorption target from falling due to an external force caused by an earthquake or the like. On the other hand, in existing vibration isolators, measures may be required to prevent the object to be damped from falling due to an unexpected external force such as a huge earthquake. However, many facilities and equipment are installed around the existing vibration mount. For this reason, it was difficult to replace the existing vibration isolator with a vibration isolator capable of withstanding a large external force.

JP 2013-53661 A

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a vibration isolator capable of preventing the object of vibration absorption from falling without replacing an existing vibration isolator.

  That is, in the present invention, a vibration isolator for limiting vibration of the second gantry in the vibration isolator in which the second gantry to which the object to be damped is fixed to the first gantry fixed to the installation surface is elastically supported by the vibration absorbing member. A leg member that receives the vibration of the second gantry, an elastic member that attenuates the vibration of the second gantry, and a connection member that transmits the vibration of the second gantry to the leg member. A connecting member is provided on the second frame using a fastening bolt fixing the object to be damped or a fastening bolt fixing the first frame to the installation surface, an elastic member is provided on the leg member, and the installation surface or The leg member is provided on the connecting member so that the elastic member faces the first gantry, and the gap between the elastic member and the installation surface or the first gantry is configured to be adjustable.

  In the present invention, the leg member is formed by fixing a plate-like member for providing the elastic member at an end portion of the screw member, and the connection member has a screw hole capable of fastening the fastening bolt on one side, and the like. Formed in a different diameter nut having a screw hole capable of fastening the screw member on the side, and the fastening bolt and the leg member are connected via the connecting member so that the fastening bolt and the screw member are on the same axis It is.

  In the present invention, the leg member is formed by fixing a plate-like member for providing the elastic member at the end of the screw member, and a hole and a screw member into which the fastening bolt can be inserted are inserted into the connection member. Possible holes or grooves are formed at predetermined intervals, and the fastening bolt and the leg member are connected via the connecting member so that the fastening bolt and the screw member are on different axes.

  In the present invention, there is provided a vibration reducing device for limiting vibration of the second gantry in the vibration isolator in which the second gantry on which the vibration absorbing object is fixed to the first gantry fixed to the installation surface is elastically supported by the vibration absorbing member. And a leg member that receives the vibration of the second gantry, an elastic member that attenuates the vibration of the second gantry, and a connecting member that transmits the vibration of the second gantry to the leg member. The connecting member is fixed to the second frame using the fastening bolts fixing the object, the leg member is provided with the elastic member, and the leg member is provided on the installation surface so that the elastic member faces the connecting member. The gap between the elastic member and the connecting member is configured to be adjustable.

  As effects of the present invention, the following effects can be obtained.

  That is, according to the present invention, the vibration isolator that suppresses the vibration of the vibration absorbing object within the limited range is installed in the vibration isolator without performing complicated processing on the vibration isolator or the installation surface of the building. Thereby, it is possible to prevent the object of vibration absorption from falling without replacing the existing vibration isolator.

The side view which shows the structure of the vibration isolator to which the vibration isolator which concerns on this invention is applied. The top view which shows the structure of the vibration isolator to which the vibration isolator which concerns on this invention is applied. The fragmentary sectional view which shows the structure of the vibration absorber of the vibration isolator to which the vibration isolator which concerns on this invention is applied. The side view which shows the structure of the vibration-reduction mechanism of the vibration isolator to which the vibration-reduction apparatus which concerns on this invention is applied. The side view which showed the structure of 1st embodiment in the vibration isolator which concerns on this invention. (A) Front view showing a mode assembled to the vibration isolator of the first embodiment in the vibration isolator according to the present invention (b) Side view showing a gap adjustment mode in the first embodiment of the vibration isolator according to the present invention (C) The front view which shows the state adjusted to the suitable clearance gap in 1st embodiment in the earthquake-reduction apparatus which concerns on this invention. The front view which showed the structure of another embodiment of 1st embodiment in the vibration isolator which concerns on this invention. (A) Front view which shows 2nd embodiment in the earthquake-reduction apparatus which concerns on this invention (b) B arrow sectional drawing in Fig.8 (a). (A) Front view which shows another embodiment of 2nd embodiment in the vibration-reduction apparatus which concerns on this invention (b) C arrow sectional drawing in Fig.9 (a). (A) Front view which shows 3rd embodiment in the earthquake-reduction apparatus which concerns on this invention (b) D arrow sectional drawing in Fig.10 (a). The front view which showed the structure of another embodiment of 3rd embodiment in the vibration isolator which concerns on this invention.

  Below, the vibration isolator 1 which is one Embodiment of the vibration isolator which concerns on this invention is demonstrated using FIGS. 1-4.

  As shown in FIG. 1 and FIG. 2, the vibration isolator 1 absorbs vibration generated from a vibration absorption target M such as an air conditioner outdoor unit or a generator, and is transmitted to the installation surface S on the roof of the building. It suppresses. The vibration isolator 1 includes a first frame 2, a vibration absorber 3 as a vibration absorbing member, a second frame 9, and a restriction mechanism 10. The vibration isolator 1 is fixed to an installation surface S such as a rooftop of a building, and is configured to elastically support the vibration absorption object M with the vibration absorber 3.

  The first gantry 2 constitutes the base of the vibration isolator 1. The first gantry 2 includes a square pipe member 2a and a joining member 2b. The first pedestal 2 is formed in a substantially quadrangular shape by joining each square pipe-shaped member 2a at a substantially right angle via a joining member 2b. Each joint member 2b is formed with a through hole 2c (see FIG. 4) in a direction perpendicular to the axial direction of each square pipe member 2a. In addition, in this embodiment, although the opposing square pipe-shaped member 2a was made into the same shape, it is not limited to this.

  The first mount 2 is firmly fixed to the installation surface S by anchor bolts B1 embedded in the installation surface S. Specifically, in the first mount 2, an anchor bolt B <b> 1 provided on the installation surface S is inserted into a through hole (not shown). Furthermore, the 1st mount frame 2 is being firmly fixed to the installation surface S by the anchor bolt B1 which protrudes from the through-hole which is not shown in figure. Thereby, the 1st mount frame 2 is comprised integrally with the installation surface S. FIG.

  As shown in FIGS. 1 and 3, the vibration absorber 3 as a vibration absorbing member absorbs vibration of the second mount 9. The vibration absorber 3 is fixed to a plurality of predetermined positions of the square pipe-like member 2a of the first mount 2 respectively. The vibration absorber 3 mainly includes a first case 4, a compression coil spring 5, a second case 6, a surging preventing member 7, and a vibration reducing mechanism 8.

  In the vibration absorber 3, the first case 4 is fixed to the square pipe-shaped member 2 a of the first mount 2. In the vibration absorber 3, one end of the compression coil spring 5 is fixed to the bottom portion in the first case 4, and the other end of the compression coil spring 5 is fixed to the bottom portion in the second case 6. That is, in the vibration absorber 3, the first case 4 and the second case 6 are connected via the compression coil spring 5. Further, the vibration absorber 3 is provided with a surging preventing member 7 so as to be in contact with the inner diameter portion of the compression coil spring 5. Further, a vibration reducing mechanism 8 is disposed on the inner diameter portion of the compression coil spring 5.

  The vibration reducing mechanism 8 attenuates vibration energy applied from the outside caused by an earthquake or the like. The vibration reducing mechanism 8 is inserted into an outer cylinder 8 a fixed to the bottom in the first case 4 so that an inner cylinder 8 b fixed to the bottom in the second case 6 has a predetermined gap. The vibration reducing mechanism 8 is configured such that the mechanical strength of the inner cylinder 8b is lower than the mechanical strength of the outer cylinder 8a. In this way, the vibration reducing mechanism 8 can attenuate the vibration energy by deforming or damaging the inner cylinder 8b having a low mechanical strength when vibration occurs to the extent that the outer cylinder 8a and the inner cylinder 8b come into contact with each other. it can.

  As shown in FIG. 1 and FIG. 2, the second gantry 9 is one on which the vibration absorption object M is fixed. The second gantry 9 includes a square pipe member 9a and a joining member 9b. The second gantry 9 is formed in a substantially quadrangular shape by joining each square pipe-shaped member 9a at a substantially right angle via a joining member 9b. In the present embodiment, the second gantry 9 is formed in substantially the same shape as the first gantry 2. Each joint member 9b is formed with a through hole 9c in a direction perpendicular to the axial direction of each square pipe member 9a. In the present embodiment, the shape of the opposing square pipe member 9a is not limited to this. Moreover, the shape of the 1st mount frame 2 and the 2nd mount frame 9 is not limited to this.

  The second frame 9 has the vibration absorbers 3 fixed to a plurality of predetermined positions. Specifically, the second case 9 has the second case 6 of the vibration absorber 3 fixed at a plurality of predetermined positions. That is, the second gantry 9 is configured to be elastically supported on the first gantry 2 by the vibration absorber 3. As for the 2nd mount 9, the assembly | attachment volt | bolt B2 is inserted in the attachment hole and through-hole which the vibration absorption target M does not show in figure. Further, in the second gantry 9, the vibration absorption object M is firmly fixed by an assembly bolt B2 protruding from a through hole (not shown). Thereby, the 2nd mount frame 9 is comprised integrally with the vibration absorption target object M. FIG.

  As shown in FIGS. 1 and 4, the restriction mechanism 10 limits the vibration of the second mount 9. The restriction mechanism 10 is configured to connect each joining member 2b of the first gantry 2 and each joining member 9b of the second gantry 9 respectively. The restricting mechanism 10 includes a connecting metal member 11, a vibration washer 12, a rubber bush 13 with a washer, and a restricting nut 14.

  In the restriction mechanism 10, the connection fitting 11 is inserted into the through hole 2 c of the first mount 2, and one side of the connection fitting 11 is fixed to the joining member 2 b of the first mount 2. In the regulating mechanism 10, a vibration washer 12 is provided on the connecting metal fitting 11 between the first frame 2 and the second frame 9. The vibration reduction washer 12 is made of a material that is easily damaged, such as ceramics, or a material that is easily deformed, such as low yield steel. Further, the restriction mechanism 10 is provided with a rubber bush 13 with a washer in the through hole 9 c of the second mount 9. In the restricting mechanism 10, the connecting fitting 11 is inserted into the rubber bush 13 with washer. In the regulation mechanism 10, a regulation nut 14 is provided on the other side of the connection fitting 11.

  In this way, the restriction mechanism 10 is configured such that the amount of movement in the direction perpendicular to the axial center of the rubber bushing 13 with the washer relative to the coupling metal 11 and the axis of the second mount 9 relative to the coupling metal 11 by the rubber bush 13 with washer 13 and the regulation nut 14. The amount of movement in the direction can be regulated. Further, when the second gantry 9 comes close to the first gantry 2 and the second gantry 9 comes into contact with the vibration reducing washer 12 due to vibration, the regulation mechanism 10 attenuates the vibration energy by the deformation washer 12 being deformed or damaged. be able to.

  As described above, the vibration isolator 1 is configured to be fixed to the installation surface S with the anchor bolt B <b> 1 and elastically support the vibration absorbing object M fixed to the vibration isolator 1 with the assembly bolt B <b> 2 by the vibration absorber 3. . The vibration isolator 1 absorbs the vibration generated from the vibration absorption object M by the vibration absorber 3 and limits the vibration of the second mount 9 due to an external force such as an earthquake by the vibration reducing mechanism 8 and the restriction mechanism 10 of the vibration absorber 3. Is configured to do.

  Next, with reference to FIG. 1, FIG. 5 and FIG. 6, a vibration damping device 15 that is a first embodiment of the vibration damping device according to the present invention will be described.

  As shown in FIG. 1, the vibration isolator 15 suppresses vibration of the existing vibration isolator 1. The vibration damping device 15 is provided between the first frame 2 and the second frame 9 of the vibration isolator 1. The vibration reducing device 15 includes a leg member 16, an elastic member 17, and a connecting member 18.

  As shown in FIG. 5, the leg member 16 supports the second mount 9 of the vibration isolator 1 that vibrates and receives vibration. The leg member 16 is composed of a screw member 16a and a plate member 16b made of a hollow cylindrical pipe. The leg member 16 has a substantially disk-shaped plate-like member 16b fixed to one side end of the screw member 16a by welding or the like. As for the screw member 16a, the thread groove is formed in the outer peripheral surface. The screw member 16a has an inner diameter larger than the screw diameter of the assembly bolt B2.

  The elastic member 17 attenuates the vibration of the second gantry 9 transmitted to the leg member 16. The elastic member 17 is provided on the plate-like member 16 b of the leg member 16. The elastic member 17 is made of a material capable of dampening vibration such as an elastomer composite material having excellent energy absorption.

  The connecting member 18 connects the second gantry 9 and the leg member 16 of the vibration isolator 1 to transmit vibration to the leg member 16. The connecting member 18 is composed of a different diameter nut in which screw holes having different inner diameters are formed on one side and the other side.

  A screw hole 18 a that can be fastened to the assembly bolt B <b> 2 that fixes the vibration absorbing object M to the vibration isolator 1 is formed on one side of the different diameter nut that is the connecting member 18. A screw hole 18 b that can be fastened to the screw member 16 a of the leg member 16 is formed on the other side of the different diameter nut that is the connecting member 18. The connecting member 18 is formed such that the screw hole 18b on the other side has a larger screw diameter than the screw hole 18a on the one side because of the relationship between the screw member 16a of the leg member 16 and the assembly bolt B2. The connecting member 18 is formed such that the screw hole 18a and the screw hole 18b communicate with each other on the same axis.

  Below, the method to assemble the vibration isolator 15 to the existing vibration isolator 1 is demonstrated using FIG. 5 and FIG.

  As shown in FIG. 5, first, the lock nut 16 c is screwed into the screw member 16 a of the leg member 16. Further, the connecting member 18 is screwed into the screw member 16a of the leg member 16 from the screw hole 18b side. That is, the lock nut 16 c and the connection member 18 are assembled to the screw member 16 a of the leg member 16.

  Next, as shown in FIG. 6A, the assembly bolt B <b> 2 that fixes the vibration absorption object M to the second mount 9 of the vibration isolation device 1 is removed. And the leg member 16 is arrange | positioned on the 1st mount frame 2 with the lock nut 16c and the connection member 18. As shown in FIG. At this time, the leg member 16 is arranged so that the elastic member 17 provided on the plate-like member 16 b faces the first mount 2.

  Next, the assembled bolt B2 that has been removed is assembled to the vibration absorbing object M and the second mount 9 (see white arrow in FIG. 6A). At the same time, the assembly bolt B <b> 2 is inserted into the hollow portion of the screw member 16 a of the leg member 16 while being screwed into the screw hole 18 a of the connection member 18. Thereby, the assembly bolt B2 and the screw member 16a of the leg member 16 are arranged on the same axis line without interfering with each other.

  Next, as shown in FIG. 6B, the connecting member 18 is tightened to the assembly bolt B2 until it contacts the second mount 9 (see the white arrow in FIG. 6B). Thereby, the connection member 18 is integrally fixed to the second gantry 9 together with the vibration absorbing object M. That is, the connection member 18 is provided on the second mount 9 using the assembly bolt B2.

  Next, as shown in FIG. 6C, the leg member 16 with respect to the connecting member 18 is rotated so that the gap between the first mount 2 and the elastic member 17 becomes a predetermined gap C1. The position of is adjusted. The leg member 16 is fixed to the connection member 18 by a lock nut 16c. That is, the leg member 16 is integrally provided on the second gantry 9 via the connection member 18.

  In the vibration damping device 15 according to the first embodiment, when the vibration absorption object M and the second gantry 9 vibrate due to an external force such as an earthquake, the vibration of the second gantry 9 is a leg member via the connection member 18. 16 is transmitted. In the vibration reducing device 15, the elastic member 17 comes into contact with the first mount 2 when the vibration of the leg member 16 becomes larger than the predetermined gap C <b> 1.

  Accordingly, the vibration reducing device 15 attenuates the vibration of the second gantry 9 by the elastic member 17 and restricts the movement of the second gantry 9 by the leg member 16. As a result, vibration is suppressed in the vibration isolator 1 by the vibration isolator 15 in addition to the vibration isolator 8 and the regulation mechanism 10 of the vibration absorber 3. Further, the vibration isolator 15 supports the second gantry 9 at a position on the same axis as the assembly bolt B2, which is a force point at which the external force applied to the vibration absorption object M is transmitted to the second gantry 9, and is generated by vibration. The bending moment to be reduced can be reduced, and the deformation amount of the second mount 9 can be reduced.

  As another embodiment of the vibration reducing device 15 according to the present invention, as shown in FIG. 7, the leg member 16 is anchored by a connecting member 19 that can be fastened to an anchor bolt B1 that fixes the first mount 2 to the installation surface S. The vibration reduction device 15A provided on the bolt B1 may be used.

  Specifically, a screw hole 19 a that can be fastened to the anchor bolt B <b> 1 that fixes the first mount 2 to the installation surface S is formed on one side of the different diameter nut that is the connection member 19. A screw hole 19 b that can be fastened to the screw member 16 a of the leg member 16 is formed on the other side of the different diameter nut that is the connecting member 19. The connecting member 19 is formed such that the screw hole 19a and the screw hole 19b communicate on the same axis.

  The leg member 16 is disposed such that the elastic member provided on the plate-like member 16 b faces the second frame 9. The leg member 16 is inserted into the hollow portion of the screw member 16a of the leg member 16 while the anchor bolt B1 is screwed into the screw hole 19a of the connection member 19. Thus, the anchor bolt B1 and the screw member 16a of the leg member 16 are arranged on the same axis without interfering with each other. The leg member 16 is fastened to the anchor bolt B1 until the connecting member 19 comes into contact with the first mount 2 and is fixed to the anchor bolt B1 by being fastened until the lock nut 16c comes into contact with the connecting member 19. That is, the leg member 16 is integrally provided on the first mount 2 via the connection member 19.

  In the vibration damping device 15A according to another embodiment of the vibration damping device 15 according to the present invention, when the vibration absorption object M and the second mount 9 vibrate due to an external force such as an earthquake, the leg member 16 has a predetermined gap. When vibrating with an amplitude larger than C1, the elastic member 17 comes into contact with the second frame 9. Thereby, the vibration reducing device 15 </ b> A attenuates the vibration of the second gantry 9 by the elastic member 17 and restricts the movement of the second gantry 9 by the leg member 16. As a result, in the vibration isolator 1, vibration is suppressed by the vibration isolator 15 </ b> A in addition to the vibration isolator 8 and the restriction mechanism 10 of the vibration absorber 3. Further, the seismic reduction device 15A supports the second gantry 9 at a position on the same axis as the anchor bolt B1 that fixes the first gantry 2 to the installation surface S, so that the deformation amount of the first gantry 2 is reduced. be able to.

  By constructing as described above, the vibration reduction device 1 suppresses the vibration of the vibration absorption object M within the limited range without applying new complicated processing to the vibration isolation device 1 or the installation surface S of the building. A device 15 (a vibration reducing device 15A) is installed. Thereby, it is possible to prevent the vibration absorbing object M from falling without replacing the existing vibration isolator 1.

  Next, with reference to FIG. 8 and FIG. 9, a vibration damping device 20 that is a second embodiment of the vibration damping device according to the present invention will be described. In the following embodiments, the same points as those of the above-described embodiments will not be specifically described, and different portions will be mainly described.

  As shown in FIG. 8, the vibration damping device 20 suppresses vibration of the existing vibration damping device 1. The vibration damping device 20 includes a leg member 16, an elastic member 17, and a connection member 21.

  The connection member 21 connects the second gantry 9 and the leg member 16 of the vibration isolator 1 to transmit vibration to the leg member 16. The connecting member 21 is formed in a U shape in a sectional view by bending both sides of the plate-like member. The connection member 21 has a hole 21a on one side into which the assembly bolt B2 can be inserted. Further, the connection member 21 is formed with a notch 21b into which the screw member 16a of the leg member 16 can be inserted with a predetermined interval from the hole 21a. Further, the connection member 21 includes a positioning member 21 c that determines a position with respect to the second mount 9.

  The connecting member 21 is positioned with respect to the second mount 9 by the positioning member 21c, and an assembly bolt B2 for fixing the vibration absorbing object M is inserted into the hole 21a formed on one side. And the connection member 21 is integrally fixed to the 2nd mount frame 9 with the vibration absorption target M with the assembly | attachment volt | bolt B2. That is, the connection member 21 is provided on the second mount 9 using the assembly bolt B2.

  The leg member 16 is inserted into a notch 21b formed on the other side of the connection member 21 so that the elastic member 17 faces the installation surface S. Thereby, the screw member 16 a of the leg member 16 and the assembly bolt B <b> 2 are arranged on different axes and are connected via the connection member 21. And the position of the leg member 16 is being fixed by the lock nut 16c in the position where the clearance gap between the installation surface S and the elastic member 17 turns into the predetermined clearance C2. That is, the leg member 16 is integrally provided on the second mount 9 via the connection member 21 with the elastic member 17 facing the installation surface S.

  In such a vibration damping device 20 according to the second embodiment, when the vibration absorption object M and the second gantry 9 vibrate due to an external force such as an earthquake, the vibration of the second gantry 9 is caused by the leg member via the connection member 21. 16 is transmitted. In the vibration reducing device 20, the elastic member 17 contacts the installation surface S when the leg member 16 vibrates with an amplitude larger than the predetermined gap C <b> 2.

  Thereby, the vibration damping device 20 attenuates the vibration of the second gantry 9 by the elastic member 17 and restricts the movement of the second gantry 9 by the leg member 16 to reduce the vibration. As a result, vibration is suppressed in the vibration isolator 1 by the vibration isolator 20 in addition to the vibration isolator 8 and the restriction mechanism 10 of the vibration absorber 3. Moreover, since the vibration isolator 20 supports the 2nd mount frame 9 using the assembly | attachment volt | bolt B2 which is the power point to which the external force added to the vibration absorption target M is transmitted to the 2nd mount frame 9, the bending moment which generate | occur | produces by a vibration. And the amount of deformation of the second mount 9 can be reduced.

  As another embodiment of the vibration damping device 20 according to the present invention, a vibration damping device 20 </ b> A including a leg member 22 and a fastening member 23 may be used.

  As shown in FIG. 9, the leg member 22 is configured by providing elastic members 17 on both surfaces of a plate-like member 22b fixed to the end of the screw member 22a. The leg member 22 is integrally provided on the second gantry 9 via the connection member 21 with the elastic member 17 facing the installation surface S.

  The fastening member 23 limits the movement of the screw member 22a of the leg member 22 in the axial direction. The fastening member 23 is formed so as to cover the plate-like member 22b of the leg member 22, and is fixed to the installation surface S by the anchor bolt B3. Specifically, the fastening member 23 has a surface facing the side surface of the plate-like member 22b on the connection member 21 side. Further, the fastening member 23 is formed with a notch 23 a so that the plate-like member 22 b of the leg member 22 can be inserted between the installation surface S and the fastening member 23.

  In the leg member 22, the plate-like member 22 b is inserted between the installation surface S and the fastening member 23. Further, the leg member 22 is fixed to the connection member 21 so that the clearance between the installation surface S and the elastic member 17 and the fastening member 23 and the elastic member 17 is a predetermined gap C2. That is, the leg member 22 is integrally provided on the second mount 9 via the connection member 21 with the elastic member 17 facing the installation surface S and the fastening member 23.

  In such a vibration damping device 20A according to another embodiment of the vibration damping device 20A according to the present invention, when the vibration absorption object M and the second mount 9 vibrate due to an external force such as an earthquake, the second member 9 is connected via the connecting member 21. The vibration of the two mounts 9 is transmitted to the leg member 22. In the vibration reducing device 20, the elastic member 17 comes into contact with the installation surface S or the fastening member 23 when the leg member 22 vibrates with an amplitude larger than the predetermined gap C <b> 2.

  Thereby, the vibration isolator 20 attenuates the vibration of the second gantry 9 by the elastic member 17 and regulates the movement of the second gantry 9 in the direction approaching and separating from the first gantry 2 by the retaining member 23. To reduce vibration. As a result, vibration is suppressed in the vibration isolator 1 by the vibration isolator 20 </ b> A in addition to the vibration isolator 8 and the restriction mechanism 10 of the vibration absorber 3.

  By constructing as described above, the vibration reduction device 1 suppresses the vibration of the vibration absorption object M within the limited range without applying new complicated processing to the vibration isolation device 1 or the installation surface S of the building. The device 20 (the vibration reducing device 20A) is installed. Thereby, it is possible to prevent the vibration absorbing object M from falling without replacing the existing vibration isolator 1.

  Next, with reference to FIG. 10 and FIG. 11, a description will be given of a vibration damping device 24 that is a third embodiment of the vibration damping device according to the present invention.

  As shown in FIG. 10, the vibration isolator 24 suppresses vibration of the existing vibration isolator 1. The vibration reducing device 24 includes a connecting member 21, a leg member 25, a first elastic member 26, and a second elastic member 27.

  The leg member 25 supports the second frame 9 of the vibration isolator 1 that vibrates and receives vibration. The leg member 25 includes a screw member 25a and a plate-like member 25b. The leg member 25 is configured by fixing a substantially rectangular plate-like member 25b to the end of the screw member 25a by welding or the like. The leg member 25 is configured such that the plate-like member 25b can be fixed to the installation surface S by the anchor bolt B4.

  The first elastic member 26 attenuates the vibration of the second gantry 9 transmitted to the leg member 25. The first elastic member 26 is configured by filling an elastic body 26b made of an elastomer composite material or the like excellent in energy absorption into a metallic container 26a having an opening formed on one surface. The first elastic member 26 is configured such that the elastic body 26b protrudes from the opening by a certain amount.

  The first elastic member 26 has a through hole (not shown) into which the screw member 25a of the leg member 25 can be inserted. Further, the first elastic member 26 is provided such that a nut 26d that can be fastened to the screw member 25a of the leg member 25 is on the same axis as the through hole 26c. That is, the first elastic member 26 is configured to be assembled to the screw member 25 a of the leg member 25.

  Similarly, the second elastic member 27 attenuates the vibration of the second gantry 9 transmitted to the leg member 25. The second elastic member 27 is configured by filling an elastic body 27b in a metallic container 27a having an opening formed on one surface. The second elastic member 27 has a through hole (not shown) formed at the center thereof. Furthermore, the second elastic member 27 is provided so that the nut 27d is on the same axis as the through hole 27c.

  The 1st elastic member 26 and the 2nd elastic member 27 are screwed in the screw member 25a of the leg member 25 so that the opening part of each container 26a * 27a may oppose. That is, the 1st elastic member 26 and the 2nd elastic member 27 are provided in the leg member 25 in the state which can be fixed in the arbitrary positions of the screw member 25a.

  The leg member 25 is inserted into a notch 21b formed on the other side of the connection member 21 so that the first elastic member 26 and the second elastic member 27 face the connection member 21, respectively. That is, the leg member 25 is disposed on the connection member 21 such that the first elastic member 26 and the second elastic member 27 sandwich the connection member 21. The first elastic member 26 and the second elastic member 27 are fixed to the leg member 25 at a position where the gap between the first elastic member 26 and the connection member 21 becomes a predetermined gap C3. And the leg member 25 is being fixed to the installation surface S by the anchor bolt B4. That is, the leg member 25 is integrally provided on the installation surface S in a state where the connection member 21 is sandwiched between the first elastic member 26 and the second elastic member 27.

  In such a vibration reduction device 24 according to the third embodiment, when the vibration absorption object M and the second gantry 9 vibrate due to an external force such as an earthquake, the leg member vibrates through the connecting member 21 when the vibration of the second gantry 9 is vibrated. 25. When the connecting member 21 vibrates with an amplitude larger than the predetermined gap C <b> 3, the connecting member 21 contacts the first elastic member 26 or the second elastic member 27. Thereby, the vibration reducing device 24 attenuates the vibration of the second gantry 9 by the first elastic member 26 and the second elastic member 27. Further, the vibration reducing device 24 is separated from the first frame 2 in the direction in which the second frame 9 is close to the first frame 2 when the containers 26a and 27a of the first elastic member 26 or the second elastic member 27 are in contact with the connection member 21. Regulate direction movement to reduce vibration. As a result, vibration is suppressed in the vibration isolator 1 by the vibration isolator 24 in addition to the vibration isolator 8 and the regulation mechanism 10 of the vibration absorber 3.

  By constructing as described above, the vibration reduction device 1 suppresses the vibration of the vibration absorption object M within the limited range without applying new complicated processing to the vibration isolation device 1 or the installation surface S of the building. A device 24 is installed. Thereby, it is possible to prevent the vibration absorbing object M from falling without replacing the existing vibration isolator 1.

  As another embodiment of the vibration damping device 24 according to the present invention, a vibration damping device 24 </ b> A including a first elastic member 28, a second elastic member 29, and a fastening member 30 may be used.

  As shown in FIG. 11, the 1st elastic member 28 and the 2nd elastic member 29 are comprised so that the assembly | attachment bolt B2 can be assembled | attached. The first elastic member 28 and the second elastic member 29 are screwed into the first gantry 2 side of the assembly bolt B2 so as to face each other. That is, the 1st elastic member 28 and the 2nd elastic member 29 are provided in the assembly bolt B2 in the state which can be fixed in arbitrary positions.

  The fastening member 30 limits the movement of the assembly bolt B2 in the axial direction. The fastening member 30 is formed so as to cover the second elastic member 29 provided on the assembly bolt B <b> 2 and is fixed to the first mount 2. That is, the fastening member 30 is provided on the first mount 2 so as to be sandwiched between the first elastic member 28 and the second elastic member 29.

  The first elastic member 28 and the second elastic member 29 are fixed to the assembly bolt B2 such that the gap between the fastening member 30, the first elastic member 28, and the second elastic member 29 is a predetermined gap C4. . That is, the first elastic member 28 and the second elastic member 29 are integrally provided on the second mount 9 via the assembly bolt B2 with the fastening member 30 sandwiched therebetween.

  In the seismic reduction device 24A according to another embodiment of the third embodiment, when the vibration absorption target M and the second mount 9 vibrate due to an external force such as an earthquake, the vibration of the second mount 9 causes the assembly bolt B2 to vibrate. Via the first elastic member 28 and the second elastic member 29. In the vibration damping device 24A, when the first elastic member 28 and the second elastic member 29 vibrate with an amplitude larger than the predetermined gap C4, the first elastic member 28 or the second elastic member 29 contacts the fastening member 30. Thereby, the vibration reducing device 24 </ b> A attenuates the vibration of the second gantry 9 by the first elastic member 28 and the second elastic member 29 and restricts the movement of the second gantry 9. As a result, vibration is suppressed in the vibration isolator 1 by the vibration isolator 24 </ b> A in addition to the vibration isolator 8 and the restriction mechanism 10 of the vibration absorber 3.

DESCRIPTION OF SYMBOLS 1 Anti-vibration device 2 1st mount 9 2nd mount 15 Anti-vibration device 16 Leg member 17 Elastic member 18 Connecting member S Installation surface M Vibration absorption object B1 Anchor bolt B2 Assembly bolt

Claims (4)

A vibration isolator that restricts vibration of the second frame in the vibration isolator in which the second frame on which the vibration absorption object is fixed to the first frame fixed to the installation surface is elastically supported by the vibration absorbing member,
A leg member that receives the vibration of the second frame;
An elastic member for damping the vibration of the second frame;
A connection member for transmitting the vibration of the second frame to the leg member;
Comprising
The connecting member is provided on the second frame using the fastening bolt that fixes the object of vibration absorption to the second frame or the fastening bolt that fixes the first frame to the installation surface, and the elastic member is provided on the leg member. The vibration reducing device is configured such that the leg member is provided on the connecting member so that the elastic member faces the installation surface or the first frame, and the clearance between the elastic member and the installation surface or the first frame is adjustable. The leg member is formed by fixing a plate member for providing the elastic member at an end of a screw member,
The connecting member is formed into a different diameter nut having a screw hole capable of fastening the fastening bolt on one side and a screw hole capable of fastening the screw member on the other side,
The vibration reducing device according to claim 1, wherein the fastening bolt and the leg member are connected via the connecting member so that the fastening bolt and the screw member are on the same axis. The leg member is formed by fixing a plate member for providing the elastic member at an end of a screw member,
In the connection member, a hole into which the fastening bolt can be inserted and a hole or groove into which the screw member can be inserted are formed at a predetermined interval,
The vibration reducing device according to claim 1, wherein the fastening bolt and the leg member are connected via the connecting member so that the fastening bolt and the screw member are on different axes. A vibration isolator that restricts vibration of the second frame in the vibration isolator in which the second frame on which the vibration absorption object is fixed to the first frame fixed to the installation surface is elastically supported by the vibration absorbing member,
A leg member that receives the vibration of the second frame;
An elastic member for damping the vibration of the second frame;
A connection member for transmitting the vibration of the second frame to the leg member;
Comprising
The connecting member is fixed to the second pedestal using a fastening bolt that fixes the object to be damped to the second pedestal, the leg member is provided with an elastic member, and the elastic member is opposed to the connecting member. Is provided on the installation surface, and the seismic reduction device is configured so that the gap between the elastic member and the connection member can be adjusted.

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