JP2017089702A - Vibration reduction structure, vibration reduction structure attachment tool, and installation method of vibration reduction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration reduction structure which inhibits fracture of a hanging bolt even when receiving large tremor caused by an earthquake etc. and is easily installed to the hanging bolt, and to provide a vibration reduction structure attachment tool and an installation method of the vibration reduction structure.SOLUTION: A vibration reduction structure 11 is formed into a cylindrical shape that encloses a periphery of a hanging bolt 3 positioned immediately below a fixing member 2 and includes: a first member 15 that is one half-split body of the vibration reduction structure 11 and has a first support member 21 and a first attenuation member 22-1; and a second member 16 which is the other half-split of the vibration reduction structure 11, includes a second support member 51, a pair of protruding parts, and a second attenuation member 22-2, and is fixed to the first member 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seismic reduction structure capable of suppressing breakage of a suspension bolt even when subjected to a large shake due to an earthquake or the like, a vibration reduction structure mounting tool, and a method of constructing the vibration reduction structure.

  2. Description of the Related Art Conventionally, buildings such as condominiums and buildings have various types of equipment installed in air conditioning equipment, lighting equipment, air conditioning ducts, various pipes, and the like. These equipments are supported by a ceiling suspended structure.

FIG. 28 is a perspective view showing an example of a conventional ceiling-suspended structure.
Referring to FIG. 28, the conventional ceiling-suspended structure 100 includes four ceiling structures 101 to 4 via inserts (not shown, inserts 102 shown in FIG. 29 described later) attached to be embedded in the ceiling structure 101. The suspension bolts 104 are suspended, and the bottom portion of the equipment device W is supported by a connection fitting 103 provided at the lower end of each suspension bolt 104 (see, for example, Patent Document 1).

JP-A-7-166711

FIG. 29 is a diagram schematically showing a deformation state of the suspension bolt when an earthquake shake is applied to the ceiling suspension structure shown in FIG.
The ceiling-suspended structure 100 having the above structure is greatly swayed when a vibration such as an earthquake is applied, and the suspension bolt 104 is repeatedly greatly bent.
Specifically, as shown in FIG. 29, when an earthquake force occurs and a force F due to acceleration acts on the equipment W, a bending deformation acts on the suspension bolt 104 (in FIG. 29). (See the suspension bolt 104 indicated by the two-dot chain line.)

  When the magnitude of the earthquake is small, the suspension bolt 104 can withstand shaking with its own rigidity. On the other hand, when the magnitude of the earthquake is large and the acceleration increases, the stress concentrates on the base end side of the suspension bolt 104 protruding downward from the ceiling structure 101 and the root portion near the ceiling structure of the suspension bolt 104, Depending on the scale, the suspension bolt 104 may be broken or broken.

  Accordingly, the present invention provides a vibration-reducing structure and a vibration-reducing structure that can suppress damage and breakage of the suspension bolt even when subjected to a large shake due to an earthquake or the like and can be easily applied to the suspension bolt. It aims at providing the construction method of a body attachment tool and a seismic reduction structure.

  In order to solve the above-described problem, according to one aspect of the present invention, a plurality of suspension bolts that are suspended from the ceiling and supported on a ceiling by being fixed to a fixing member provided in the ceiling. Among them, a vibration-reducing structure having a cylindrical shape surrounding the periphery of a portion located directly below the fixing member, which is one half of the vibration-reducing structure, the first support member, and A first member having a first damping member and the other half of the vibration-damping structure, including a second support member, a pair of protrusions, and a second damping member, A first suspension bolt screwed to the first support member, the first support member being disposed on the ceiling side and provided with a female screw to which the suspension bolt can be screwed. A first damping member mounting portion provided below the first suspension bolt screwing portion, and one front A first engagement surface engaged with the protrusion, a second engagement surface engaged with the other protrusion, and the first engagement surface and the second engagement surface. And a first recess provided on an outer wall of the first support member located between the first damping member and the first damping member mounted on the first damping member mounting portion to attenuate vibrations. And a first suspension bolt housing portion that can accommodate the suspension bolt. The second support member is disposed on the ceiling side and is capable of screwing the suspension bolt. A second suspension bolt threaded portion provided with a screw and disposed to face the first suspension bolt threaded portion; and the first damping bolt below the second suspension bolt threaded portion. A second damping member mounting portion provided to face the member mounting portion, and an outer wall of the second support member. The second support member and the first support member by being inserted into the first and second engaging surfaces. The second damping member is mounted on the second damping member mounting portion, is made of a material capable of damping vibration, and can accommodate the suspension bolt. There is provided a vibration reducing structure including a suspension bolt receiving portion.

According to the vibration-reducing structure of one aspect of the present invention, the vibration-reducing structure is constituted by the first and second members that are substantially halved, and the first damping member of the first member and the second member In a state where the suspension bolt is disposed between the second damping member and the second member, the pair of protrusions are engaged with the first and second engagement surfaces, so that the side of the suspension bolt is Therefore, it is possible to attach the vibration-reducing structure to the suspension bolt.
Thereby, the seismic-reduction structure can be easily attached not only to the newly provided suspension bolt but also to the existing suspension bolt that supports the equipment.

  Moreover, it becomes possible to reduce the vibration of a suspension bolt by having the 1st and 2nd damping member which accommodates a part of suspension bolt. Thereby, even if it is a case where a big shake by an earthquake etc. is received, damage and a fracture | rupture of a suspension bolt can be suppressed.

  Further, in the above-described vibration-damping structure, a plurality of first ribs are provided on the outer wall of the first support member, and a plurality of second ribs are provided on the outer wall of the second support member. The first recess is a groove extending in the circumferential direction of the outer wall of the first support member and defined by the plurality of first ribs, and the second recess is the It may be a groove extending in the circumferential direction of the outer wall of the second support member defined by a plurality of second ribs.

As described above, the plurality of first ribs are provided on the outer wall of the first support member, and the plurality of second ribs are provided on the outer wall of the second support member, which is sufficient for the first and second support members. In addition, it is possible to reduce the amount of the material of the first and second support members while providing a sufficient rigidity.
In addition, when the first and second ribs are formed, the first recess is formed by the plurality of first ribs and the second recess is formed by the plurality of second ribs. And the 2nd recessed part can be formed collectively.

  Further, in the above-described vibration-damping structure, one of the pair of projecting portions is provided with a first penetrating portion that penetrates the projecting portion, and the other projecting portion includes the projecting portion. A second penetrating portion that penetrates the first engaging portion is provided, and the first engaging surface is provided with a first engaging portion that engages with the first penetrating portion, and the second engaging portion is provided on the first engaging surface. A second engagement portion that engages with the second through portion may be provided on the engagement surface.

  Thus, it has the 1st penetration part, the 1st engagement part engaged with the 1st penetration part, the 2nd penetration part, and the 2nd engagement part engaged with the 2nd penetration part. Thus, the connection between the first member and the second member can be strengthened.

  In the above-mentioned seismic attenuation structure, the first damping member and the second damping member may be in contact with each other in the circumferential direction of the suspension bolt.

  Thus, in the circumferential direction of the suspension bolt, the first attenuation member and the second attenuation member are in contact with each other so that the suspension bolt has a cylindrical shape surrounding the suspension bolt. When this occurs, it becomes possible to attenuate the shaking efficiently. Thereby, damage and breakage of the suspension bolt can be suppressed.

  Moreover, in the above-mentioned seismic attenuation structure, the lower end portion of the first attenuation member is disposed so as to protrude downward from the lower end of the first support member, and the lower end portion of the second attenuation member is The second supporting member may be disposed so as to protrude downward from the lower end of the second supporting member.

  By setting it as such a structure, when a suspension bolt shakes greatly by an earthquake etc., it becomes possible to suppress that a 1st and 2nd support member and a suspension bolt contact | win directly. Thereby, it can control that the 1st and 2nd support members are damaged.

  Moreover, the said 2nd recessed part may be the same shape as the said 1st recessed part in the said earthquake-reduction structure.

Thus, by making the 2nd crevice the same shape as the 1st crevice, for example, it provided in the 1st and 2nd crevice, and the 1st and 2nd functional parts of the vibration reduction structure installation tool It is possible to insert both projected portions.
That is, the first and second parts can be attached to either the first or second functional unit. Thereby, the work efficiency at the time of attaching a 1st component or a 2nd component to a 1st and 2nd function part can be improved.

  Further, in the above-mentioned seismic attenuation structure, the material of the first and second damping members is a rubber or elastomer type high damping material having a rubber hardness of 60 degrees or more and a loss coefficient (tan δ) of 0.5 or more. It may be a material.

  Thus, as the material of the damping member, by using a rubber-based or elastomer-based high-damping material having a rubber hardness of 60 degrees or more and a loss coefficient (tan δ) of 0.5 or more, it is close to the ceiling of the suspension bolt. The vibration of the suspension bolt that vibrates with a small amplitude at the position can be effectively reduced.

That is, the amount of vibration energy acting on the suspension bolt out of the total amount of vibration energy is consumed and the vibration load on the suspension bolt is reduced, so that the vibration of the equipment and the suspension bolt can be reduced.
Furthermore, since the vibration-reducing structure is mounted near the ceiling of the suspension bolt, a special installation space is almost unnecessary. Thereby, even when piping or other equipment is installed around the equipment, it can be easily installed.

  Further, in the above-described vibration-damping structure, the material of the first and second support members may be a nylon resin.

Thus, by using nylon resin as the material of the first and second support members, the strength of the first and second support members is sufficiently ensured, and then the first and second support members of the first and second support members are sufficiently secured. The weight can be reduced.
Thereby, since it becomes easy to handle the 1st and 2nd member, construction of a seismic-reduction structure can be performed easily.

  Moreover, it is a vibration reduction structure installation tool used when attaching the vibration reduction structure of any one of Claim 1 thru | or to the said suspension bolt, Comprising: The state which can be opened and closed by a rotation junction part, A handle including the first and second handle members, a first function portion provided at the tip of the first handle member, and a second function provided at the tip of the second handle member A first member accommodating portion for accommodating a part of the first member in a state where the first and second engaging surfaces are exposed, A first protrusion that is provided in the first member housing portion and regulates the position of the first member by being inserted into the first recess, and the second functional portion is: A second member accommodating portion that accommodates a part of the second member with the pair of protruding portions exposed. Provided member accommodating portion of the second, and the second projecting portion for regulating the position of the second member by being inserted into the second recess may include.

As described above, the first function portion includes the first member accommodating portion that accommodates a part of the first member with the first and second engagement surfaces exposed, and the second function. When the handle is closed, the first and second engaging surfaces are provided when the handle is closed by including a second member accommodating portion that accommodates a part of the second member with the pair of protruding portions exposed. On the other hand, it becomes possible to engage a pair of protrusion part.
That is, by using the seismic structure mounting tool configured as described above, the first member and the second member can be easily engaged with the suspension bolt by hand in a shorter time. Attach a seismic reduction structure.
In addition, when using the vibration reduction structure mounting tool, the vibration reduction structure can be easily attached not only to the newly installed suspension bolt but also to the existing suspension bolt.

Also, a first protrusion that is provided in the first member accommodating portion and that is inserted into the first recess to restrict the position of the first member, and a second member accommodating portion that is provided in the second member accommodating portion. And the second projecting part that regulates the position of the second member by being inserted into the concave part of the first member and the second function part being dropped from the first and second functional parts. It becomes possible to suppress.
Thereby, the work efficiency of the operator who attaches a seismic-reduction structure with respect to a suspension bolt can be improved.
Furthermore, by attaching the above-mentioned seismic reduction structure to the suspension bolt, it is possible to suppress the suspension bolt from being damaged or broken even when subjected to a large shake due to an earthquake or the like.

  Moreover, in the above-mentioned seismic attenuation structure mounting tool, a plurality of the first and second protrusions may be provided.

Thus, by providing a plurality of first protrusions, the position of the first member relative to the first functional part can be accurately regulated. In addition, by providing a plurality of second projecting portions, the position of the second member relative to the second functional portion can be regulated with high accuracy.
Thereby, since it becomes difficult to generate | occur | produce the position shift between a 1st member and a 2nd member, a 1st member and a 2nd member can be engaged accurately.

  In the above-mentioned seismic structure mounting tool, the first functional unit includes a first support unit that supports a lower end of the first support member, and the second functional unit includes the second functional unit. You may include the 2nd support part which supports the lower end of a support member.

Thus, it can suppress that the 1st function part falls from the 1st functional part because the 1st functional part contains the 1st support part which supports the lower end of the 1st support member.
Moreover, it can suppress that a 2nd member falls from a 2nd function part because a 2nd function part contains the 2nd support part which supports the lower end of a 2nd support member.

  Further, in the above-described vibration reduction structure mounting tool, the first support portion is shaped so as to surround a portion of the first damping member that protrudes below the first support member. The second support portion may have a shape surrounding a portion of the second damping member that protrudes downward from the second support member.

  With such a shape, when the handle is closed, the first damping member and the second damping member projecting downward from the first supporting member in the direction toward the suspension bolt by the first and second supporting portions. The second damping member protruding downward from the supporting member can be pressed.

  Further, in the vibration-damping structure mounting tool, the first function unit is fixed in a state inclined at a first angle with respect to a distal end portion of the first handle member, and the second function The portion may be fixed in a state where it is inclined at the same angle as the first angle with respect to the distal end portion of the second handle member.

  By setting it as such a structure, a seismic-reduction structure can be easily attached with respect to a suspension bolt, without a suspension bolt becoming obstructive.

  Further, in the above-described seismic attenuation structure attaching tool, the first and second functional parts are the first functional part and the second functional part in a state where the seismic structure is attached to the suspension bolt. The structure which does not contact with may be sufficient.

  By setting it as such a structure, a 1st and 2nd component can be firmly pressed in the direction which goes to a suspension bolt.

  Moreover, the said seismic-reduction structure attachment tool WHEREIN: The shape which can be inserted in both the said 1st and 2nd recessed part may be sufficient as the said 1st and 2nd protrusion part.

  By adopting such a configuration, the first member or the second member can be mounted (supported) on either the first or second functional unit. Workability at the time of attaching can be further improved.

  Moreover, it is a construction method of the vibration reduction structure using the vibration reduction structure installation tool of any one of Claims 9 thru | or 15, Comprising: One of the said 1st and 2nd functional parts The first member is attached to the function part so that the position of the first member is restricted, and the second member is attached to the other function part so that the position of the second member is restricted. First and second member attaching steps, opening the handle portion, the first suspension bolt screwing portion, the first suspension bolt housing portion, the second suspension bolt screwing portion, and the first The handle portion is closed so that the suspension bolt is accommodated in the suspension bolt housing portion, and the pair of protrusions are engaged with the first and second engagement surfaces. The seismic-reduction structure installation work for attaching the seismic-reduction structure to the suspension bolt When, by rotating the hanging bolts the mounted down seismic structure, and GenShin structure abutting step of abutting the decrease seismic structure at the lower end of the fixing member may include a.

Thus, by performing the construction method of the seismic-reduction structure using the said seismic-reduction structure attachment tool, compared with the case where the 1st member and the 2nd member are engaged by hand, it is a short time. In addition, the seismic isolation structure can be easily constructed with a small force.
In addition, by attaching the above-mentioned seismic reduction structure to the suspension bolt, it is possible to suppress the suspension bolt from being damaged or broken even when subjected to a large shake due to an earthquake or the like.

  ADVANTAGE OF THE INVENTION According to this invention, even when it receives a big shake by an earthquake etc., damage and a fracture | rupture of a suspension bolt can be suppressed, and a seismic-reduction structure can be easily attached with respect to a suspension bolt.

It is a fragmentary sectional view which shows the ceiling suspension apparatus with a vibration-reduction structure provided with the vibration-reduction structure which concerns on embodiment of this invention. It is a side view of the seismic-reduction structure shown in FIG. 1 with which the 1st member and the 2nd member were engaged. It is the figure which planarly viewed the seismic-reduction structure shown in FIG. 2 from the upper surface side. It is a front view of the 1st member which comprises the seismic-reduction structure shown in FIG. It is a perspective view of the back side of the 1st member shown in FIG. It is the perspective view which decomposed | disassembled the 1st supporting member and 1st damping member which comprise the 1st member shown in FIG. It is a front view of the 1st supporting member shown in FIG. FIG. 8 is a rear view of the first support member shown in FIG. 7. It is the top view which looked at the 1st supporting member shown in FIG. FIG. 9 is a side view of the first support member shown in FIG. It is a front view of the 1st damping member shown in FIG. It is sectional drawing of the CC direction of the 1st damping member shown in FIG. It is a front view of the 2nd member which comprises the seismic-reduction structure shown in FIG. It is a perspective view of the back side of the 2nd member shown in FIG. It is the perspective view which decomposed | disassembled the 2nd supporting member and 2nd attenuation | damping member which comprise the 2nd member shown in FIG. It is a front view of the 2nd supporting member shown in FIG. It is a rear view of the 2nd supporting member shown in FIG. FIG. 18 is a plan view of the second support member shown in FIG. It is the side view which looked at the 2nd supporting member shown in FIG. It is a perspective view which shows the whole seismic-reduction structure installation tool which concerns on embodiment of this invention, and has shown typically the state which the 1st and 2nd function part closed. It is a perspective view which shows the whole seismic-reduction structure installation tool which concerns on embodiment of this invention, and has shown typically the state which the 1st and 2nd function part opened. It is the side view to which the 1st functional part and the front-end | tip part of a 1st handle member were expanded. It is the top view seen from the upper end side of the 1st and 2nd functional part of the closed state. It is the perspective view which looked at the 1st and 2nd functional part of the closed state from the handle part side. It is the top view which looked at the 1st and 2nd functional part of the open state from the upper end side. It is the perspective view which looked at the 1st functional part which supports the 1st member, and the 2nd functional part which supports the 2nd member from the handle side. It is the top view which looked at the 1st and 2nd functional part shown in Drawing 26, and the 1st and 2nd part from the upper end side of the 1st and 2nd part. It is a perspective view which shows an example of the conventional ceiling-suspended structure. It is a figure which shows typically the deformation | transformation state of a suspension bolt when the shaking of an earthquake acts on the ceiling suspension structure shown in FIG.

  Embodiments to which the present invention is applied will be described below in detail with reference to the drawings. The drawings used in the following description are for explaining the configuration of the embodiment of the present invention. The size, thickness, dimensions, and the like of each part shown in the drawings are the actual suspension device 1 with a vibration-reducing structure. The dimensional relationship of the vibration-reducing structure 11 and the vibration-reducing structure mounting tool 70 may be different.

(Embodiment)
FIG. 1 is a partial cross-sectional view showing a ceiling-suspended device with a vibration-reducing structure including a vibration-reducing structure according to an embodiment of the present invention. In FIG. 1, the x direction is a direction parallel to the groove 4A of the deck plate 4 (in other words, the groove FA of the ceiling casing F) (depth direction of the equipment 6), and the y direction is the groove 4A of the deck plate 4 (in other words, paraphrase). For example, the direction orthogonal to the groove FA) of the ceiling housing F and the z direction indicate the vertical direction orthogonal to the x direction and the y direction, respectively.

Referring to FIG. 1, a ceiling-suspended device 1 with a vibration-reducing structure includes a vibration-reducing structure 11.
The ceiling-suspended device 1 with a seismic-reduction structure includes four suspensions whose upper end portions are screwed through fixing members 2 that are fixtures embedded in the bottom of a ceiling frame F (for example, a ceiling concrete structure). The bolt 3 is suspended in the vertical direction. The ceiling housing F has a plurality of grooves FA extending in the x direction and arranged in the y direction.

At the lower ends of the four suspension bolts 3, connecting tools 5 are provided, and the equipment 6 is suspended and supported via the connecting tools 5.
The deck plate 4 is provided so as to cover the lower surface of the ceiling casing F. As a result, the shape of the plurality of grooves FA of the ceiling casing F is transferred to the deck plate 4, so that a plurality of grooves 4 </ b> A are formed. Each suspension bolt 3 is suspended through the deck plate 4.

  Examples of the equipment 6 include various installed devices such as an indoor unit and an outdoor unit of a room air conditioner, an air conditioning duct, a storage box for a blower fan, and a piping and cable storage unit. In FIG. 1, as an example, an indoor unit of a room air conditioner having a square box shape is illustrated.

In FIG. 1, only two suspension bolts 3 are illustrated on the left and right sides of the facility device 6, but two suspension bolts 3 (not illustrated) are suspended at predetermined positions in the x direction.
Therefore, the box-type equipment 6 is supported by the ceiling by the four suspension bolts 3 in total.

  Note that the number of the suspension bolts 3 that suspend and support the equipment 6 can be set as appropriate depending on the scale and length of the equipment 6. When the equipment 6 is a long object such as a duct, a plurality of suspension bolts 3 are installed at necessary intervals in the length direction of the duct.

  In addition, when the equipment 6 is a small structure such as a small-scale pipe or wiring, a plurality of suspension bolts 3 suspended on the pipe or wiring are provided in the length direction of the pipe or wiring. It may be arranged and hung. The structure of the present application can also be applied to equipment that can be supported by one suspension bolt 3.

  Two sets of support pieces 6a are formed in a projecting manner in the horizontal direction (y direction or -y direction) at the lower portions of both side surfaces of the box-type equipment 6 and these support pieces 6a are connected to a connecting tool 5 such as an S-shaped bracket. It is connected to the lower end part of each suspension bolt 3 via.

The connector 5 includes a lower support piece 5a, an extension piece 5b, and a part support piece 5c. The lower support piece 5a is connected to the support piece 6a by a bolt 8 and a nut 9 in a state where the lower support piece 5a is horizontally stacked on the support piece 6a. The extending piece 5b is erected in the z direction orthogonal to the lower support piece 5a.
The upper support piece 5c extends horizontally from the upper end of the extension piece 5b. A suspension bolt 3 passes through the upper support piece 5 c and is connected to the suspension bolt 3 by a nut 10 screwed into the suspension bolt 3.

FIG. 2 is a side view of the vibration-reducing structure shown in FIG. 1 in which the first member and the second member are engaged. 2, the same components as those of the vibration-reducing structure 11 shown in FIG.
FIG. 3 is a plan view of the vibration-reducing structure shown in FIG. 3, the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

Referring to FIGS. 1 to 3, the vibration-reducing structure 11 is provided so as to surround the periphery of the portion located directly below the fixing member 2 among the plurality of suspension bolts 3 that support and suspend the equipment 6. ing.
The vibration reducing structure 11 has a cylindrical shape, and includes a first member 15 and a second member 16. The first and second members 15 and 16 are substantially halved bodies of the seismic reduction structure 11.

FIG. 4 is a front view of the first member constituting the vibration-reducing structure shown in FIG. 4, the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals.
FIG. 5 is a perspective view of the back side of the first member shown in FIG. In FIG. 5, the same components as those shown in FIGS.
FIG. 6 is an exploded perspective view of the first support member and the first damping member constituting the first member shown in FIG. In FIG. 6, the same components as those in the structure shown in FIGS.

  4 to 6, the first member 15 includes a first support member 21 and a first damping member 22-1.

FIG. 7 is a front view of the first support member shown in FIG. In FIG. 7, the same components as those shown in FIGS.
FIG. 8 is a rear view of the first support member shown in FIG. In FIG. 8, the same components as those shown in FIGS.
FIG. 9 is a plan view of the first support member shown in FIG. 9, the same components as those shown in FIGS. 7 and 8 are denoted by the same reference numerals.
FIG. 10 is a side view of the first support member shown in FIG. 10, the same components as those shown in FIGS. 7 to 9 are denoted by the same reference numerals.

1 to 10, the first support member 21 includes a first support member body 25-1, a plurality of first ribs 26-1, a first recess 26 </ b> A, and a mounting hole 27. The first suspension bolt screwing portion 28-1, the first damping member mounting portion 29-1, the first engagement surface 31, the first engagement portion 32, and the second engagement. A surface 33 and a second engaging portion 34 are provided.
The first support member body 25-1 has a shape obtained by dividing a cylindrical member into two in the vertical direction. The plurality of first ribs 26-1 are provided on the outer wall of the first support member main body 25-1. The plurality of first ribs 26-1 are erected in a direction orthogonal to the outer wall of the first support member main body 25-1. The plurality of first ribs 26-1 are provided in the z direction and the direction orthogonal to the z direction.

  As described above, by providing the plurality of first ribs 26-1 on the outer wall of the first support member main body 25-1, the first support member 21 has sufficient rigidity, The amount of material of the support member 21 can be reduced.

26 A of 1st recessed parts are divided by the 1st rib 26-1 arrange | positioned in the direction orthogonal to az direction and az direction. 26 A of 1st recessed parts may be the groove | channel extended in the circumferential direction of the outer wall of the 1st supporting member main body 25-1, for example.
In the present embodiment, as an example, a case where two first recesses 26 </ b> A are provided in the circumferential direction of the first support member 21 is illustrated.

  When the vibration-reducing structure 11 is attached to a new or existing suspension bolt 3, the two first recesses 26A are provided with first projecting portions constituting a first functional portion 75 shown in FIG. One of the protrusions 85 or the second protrusion 89 constituting the second functional part 76 is inserted.

  For this reason, the shape of the first recess 26A is a groove extending in the circumferential direction of the outer wall of the first support member main body 25-1, so that the first and second recesses 26A are first and second. The protrusions 85 and 89 can be easily inserted. That is, the work efficiency when attaching the vibration reducing structure 11 to the suspension bolt 3 can be improved.

Thus, the first functional portion 75 or the second functional portion is provided by providing the first concave portion 26A and inserting the first projecting portion 85 or the second projecting portion 89 into the first concave portion 26A. 76 makes it possible to support the first member 15, so that the first member 15 can be prevented from falling from the first and second functional portions 75, 76, and vibration is reduced with respect to the suspension bolt 3. The structure 11 can be easily attached.
In addition, by forming the first recess 26A with the plurality of first ribs 26-1, the first recess 26A can be formed in a lump when the first rib 26-1 is formed.

The mounting hole 27 is provided so as to penetrate the lower portion of the first support member main body 25-1. The mounting hole 27 is engaged with an engaging protrusion 43, which will be described later, constituting the first damping member 22-1.
The first suspension bolt screwing portion 28-1 is provided inside the upper portion of the first support member main body 25-1. The first suspension bolt screwing portion 28-1 is provided with a female screw to which the suspension bolt 3 can be screwed. A part of the suspension bolt 3 is accommodated in the first suspension bolt screwing portion 28-1.

The first damping member mounting portion 29-1 is provided inside the lower portion of the first support member main body 25-1 in which the mounting hole 27 is provided. The first attenuation member 22-1 is attached to the first attenuation member attachment portion 29-1.
The first attenuation member 22-1 attached to the first attenuation member attachment portion 29-1 covers a part of the outer periphery of the suspension bolt 3.

The first engagement surface 31 is disposed on the outer surface of one side wall end portion of the first support member main body 25-1. The first engagement surface 31 is provided so as to extend in the z direction.
A plurality of first engaging portions 32 are provided on the first engaging surface 31. The plurality of first engaging portions 32 are arranged in the extending direction of the first engaging surface 31. The first engaging portion 32 is a protruding portion that slightly protrudes in a direction orthogonal to the first engaging surface 31.
The first engaging portion 32 has a shape that can be engaged with a first through portion 56 constituting a second portion 16 shown in FIG.

The second engagement surface 33 is disposed on the outer surface of the other side wall end portion of the first support member main body 25-1. The second engagement surface 33 is provided so as to extend in the z direction.
A plurality of second engagement portions 34 are provided on the second engagement surface 33. The plurality of second engaging portions 34 are arranged in the extending direction of the second engaging surface 33. The second engaging portion 34 is a protruding portion that slightly protrudes in the direction orthogonal to the second engaging surface 33.
The second engaging portion 34 has a shape that can be engaged with a second penetrating portion 58 constituting the second portion 16 shown in FIG. 14 described later.

  As described above, the first through portion 56, the first engaging portion 32 that engages with the first through portion 56, the second through portion 58, and the second through portion 58 that engages with the second through portion 58. By having the engaging portion 34, the connection between the first member 15 and the second member 16 can be strengthened.

The upper surface 21a of the first support member 21 configured as described above is a surface that is in contact with the lower end of the fixing member 2 (in other words, the lower surface of the deck plate 4) (see FIG. 1).
As a material of the first support member 21, for example, a metal (for example, steel, stainless steel, aluminum, or the like) or a high-hardness resin (for example, a nylon resin) can be used.
Thus, by using a high-hardness resin (for example, nylon resin) as a material for the first support member 21, the first support member 21 is sufficiently strong and the first support member 21 is secured. The weight of 21 can be reduced. Thereby, since the weight reduction of the 1st member 15 can be attained, construction of the earthquake-reduction structure 11 can be performed easily.

FIG. 11 is a front view of the first damping member shown in FIG. 6. In FIG. 11, the same components as those in the structures shown in FIGS.
12 is a cross-sectional view of the first damping member shown in FIG. 6 in the CC line direction. In FIG. 12, the same components as those in the structure shown in FIG.

4 to 6, 11, and 12, the first attenuation member 22-1 is a member that is attached to the first attenuation member attachment portion 29-1, and is a curved plate-like portion 41. -1, a lower end portion 42, an engaging protrusion 43, and a protruding portion 43 </ b> A.
The curved plate-like portion 41-1 includes a first suspension bolt housing portion 41-1A capable of housing the suspension bolt 3. The curved plate-like portion 41-1 is a member (in other words, a half of a cylindrical member) having a curved plate shape that can accommodate a part of the suspension bolt 3 shown in FIG. The curved plate-like portion 41-1 is accommodated in the first damping member mounting portion 29-1.

The lower end portion 42 is provided at the lower end of the curved plate-like portion 41-1, and is configured integrally with the curved plate-like portion 41-1. The lower end portion 42 is a surface direction orthogonal to the z direction, protrudes from the outer surface 41-1a of the curved plate portion 41-1 and below the curved plate portion 41-1.
In a state where the first damping member 22-1 is mounted on the first damping member mounting portion 29-1, the first damping member 22-1 projects downward from the lower end of the first support member 21. Yes.

Thus, when the 1st damping member 22-1 has the lower end part 42 which protrudes below from the lower end of the 1st supporting member 21, when the suspension bolt 3 shakes greatly by an earthquake etc., 1st It is possible to prevent the support member 21 and the suspension bolt 3 from directly contacting each other.
Thereby, damage to the 1st support member 21 resulting from contact with the suspension bolt 3 can be suppressed.

The engaging protrusion 43 is provided at a position facing the mounting hole 27 on the outer surface 41-1a of the curved plate-shaped portion 41-1 housed in the first damping member mounting portion 29-1. The engaging protrusion 43 protrudes in a direction away from the outer surface 41-1a and in a direction orthogonal to the z direction.
The engaging protrusion 43 can be formed in a substantially cylindrical shape, for example. A protruding portion 43 </ b> A is provided on the outer side of the front end of the engaging protrusion 43. The protruding portion 43 </ b> A is provided so as to protrude to the outside of the engaging protrusion 43. The protruding portion 43 </ b> A is a portion disposed outside the mounting hole 27 when the engaging protrusion 43 is inserted into the mounting hole 27 of the first support member 21.

Thus, by providing the protruding portion 43A at the tip of the engaging protrusion 43, the engaging protrusion 43 is inserted into the mounting hole 27 of the first support member 21, and the first support member 21 has the first When the damping member 22-1 is attached, it is possible to prevent the first damping member 22-1 from easily falling off the first support member 21.
In addition, the shape of the 1st attenuation member 22-1 shown in FIG.6, FIG.11 and FIG.12 is an example, Comprising: The shape of the 1st attenuation member 22-1 is not limited to this shape.

The first damping member 22-1 configured as described above is made of a material that can attenuate the vibration of the suspension bolt 3 when an earthquake or the like occurs.
As a material of the first damping member 22-1, for example, the rubber hardness is 60 degrees or more (specifically, for example, about 60 to 90 degrees) according to durometer type A defined in JISK6253, and at normal temperature. Loss coefficient (tan δ): It is preferable to use a rubber or thermoplastic elastomer high damping material of 0.5 or more.
As described above, as the material of the first damping member 22-1, a rubber-based or elastomer-based high damping material having a rubber hardness of 60 degrees or more and a loss coefficient (tan δ) of 0.5 or more is used. The suspension bolt 3 that vibrates with a small amplitude at a position near the ceiling of the suspension bolt 3 can be effectively reduced.

That is, the amount of vibration energy acting on the suspension bolt 3 is consumed out of the total amount of vibration energy, and the vibration load on the suspension bolt 3 is reduced. Therefore, the vibration of the equipment 6 and the suspension bolt 3 can be reduced. it can.
Furthermore, since the vibration-reducing structure 11 is mounted near the ceiling of the suspension bolt 3, a special installation space is almost unnecessary. Thereby, even when piping or other equipment is installed around the equipment 6, it can be easily installed.

When a rubber-based high attenuation material is used as the material of the first attenuation member 22-1, it is preferable to use a high attenuation material having a rubber hardness of 60 degrees or more and 90 degrees or less.
By using the first damping member 22-1 made of the rubber-based or thermoplastic elastomer-based high damping material described above, the vibration of the suspension bolt 3 can be efficiently damped.
When a rubber-based high damping material is used, it can be manufactured by molding a rubber-based damping material. On the other hand, when an elastomer-based high damping material is used as the material of the first damping member 22-1, the first damping member 22-1 can be manufactured in large quantities at a low price by injection molding or the like.

It is preferable to color the surface of the first attenuation member 22-1 or use the colored first attenuation member 22-1. The color of the first attenuation member 22-1 is preferably a color that stands out at the construction site where the ceiling suspension structure is applied, for example.
Specifically, when the ceiling body F shown in FIG. 1 is a gray system mainly composed of concrete, the color of the first attenuation member 22-1 is, for example, white or red having a hue different from the gray system Green, etc. are preferred.
By coloring the first attenuation member 22-1 with such a color, the operator can visually confirm the color of the first attenuation member 22-1 at the construction site. . Thereby, an operator can confirm easily whether installation of the 1st damping member 22-1 is completed.
Moreover, when using resin as a material of the 1st supporting member 21, you may color the 1st supporting member 21 in the same color as the 1st attenuation member 22-1 mentioned above.

FIG. 13 is a front view of a second member constituting the vibration-reducing structure shown in FIG. In FIG. 13, the same components as those shown in FIGS.
14 is a rear perspective view of the second member shown in FIG. 14, the same components as those shown in FIGS. 1 to 13 are denoted by the same reference numerals.
FIG. 15 is an exploded perspective view of the second support member and the second damping member constituting the second member shown in FIG. 15, the same components as those shown in FIGS. 1 to 14 are denoted by the same reference numerals.

  Referring to FIGS. 13 to 15, the second member 16 includes a second support member 51 and a second damping member 22-2.

FIG. 16 is a front view of the second support member shown in FIG. 13. In FIG. 16, the same components as those shown in FIGS.
FIG. 17 is a rear view of the second support member shown in FIG. 16. In FIG. 17, the same components as those shown in FIGS.
FIG. 18 is a plan view of the second support member shown in FIG. In FIG. 18, the same components as those shown in FIGS. 16 and 17 are denoted by the same reference numerals.
FIG. 19 is a side view of the second support member shown in FIG. 19, the same components as those shown in FIGS. 1 to 18 are denoted by the same reference numerals.

With reference to FIGS. 1 to 3 and FIGS. 16 to 19, the second support member 51 includes a second support member body 25-2, a plurality of second ribs 26-2, The recess 26 </ b> B, the mounting hole 27, the second suspension bolt screwing portion 28-2, the second damping member mounting portion 29-2, and a pair of projecting portions 53 and 54 are provided.
The second support member body 25-2 has the same configuration as the first support member body 25-1 described above.

The plurality of second ribs 26-2 are provided on the outer wall of the second support member main body 25-2. The plurality of second ribs 26-2 are erected in a direction orthogonal to the outer wall of the second support member main body 25-2. The plurality of second ribs 26-2 are provided in the z direction and a direction orthogonal to the z direction.
As described above, by providing the plurality of second ribs 26-2 on the outer wall of the second support member main body 25-2, the second support member 51 is provided with sufficient rigidity, and then the second rib 26-2 is provided. The material of the support member 51 can be reduced.

The second recess 26B is partitioned by a plurality of second ribs 26-2 arranged in the z direction and in a direction orthogonal to the z direction. When the vibration-reducing structure 11 is attached to a new or existing suspension bolt 3 (see FIG. 1), the two second recesses 26B are configured with a first functional unit 75 shown in FIG. Any one of the first protrusion 85 (see FIG. 20 described later) or the second protrusion 89 (see FIG. 20 described later) constituting the second functional unit 76 is inserted.
The second recess 26B has, for example, the same configuration (similar shape) as the first recess 26A described above.

In this way, the second recess 26B has the same shape as the first recess 26A, so that, for example, the first and second recesses 26A and 26B can be provided with a seismic structure mounting tool shown in FIG. It is possible to insert both protrusions (first and second protrusions 85 and 89) provided in the first and second functional parts 75 and 76 of the 70.
That is, the first and second parts 15 and 16 can be attached to both the first and second functional units 75 and 76. Thereby, the work efficiency at the time of attaching the 1st member 15 or the 2nd component 16 to the 1st and 2nd functional parts 75 and 76 can be raised.

The mounting hole 27 is provided so as to penetrate the lower part of the second support member main body 25-2. The mounting hole 27 is engaged with an engaging protrusion 43 and a protruding portion 43A, which will be described later, constituting the second damping member 22-2.
The second suspension bolt screwing portion 28-2 is the same as the first suspension bolt screwing portion 28-1 described above, except that the second suspension bolt screwing portion 28-2 is provided inside the upper portion of the second support member main body 25-2. It is set as the same structure. A part of the suspension bolt 3 is accommodated in the second suspension bolt screwing portion 28-2.

  The second damping member mounting portion 29-2 is provided at the first damping member mounting described above except that the second damping member mounting portion 29-2 is provided inside the lower portion of the second support member main body 25-2 provided with the mounting hole 27. It is comprised similarly to the part 29-1. The second attenuation member 22-2 is attached to the second attenuation member attachment portion 29-2.

The protruding portion 53 is a portion protruding from one end portion located in the circumferential direction of the second support member main body 25-2. The protruding portion 53 includes a protruding portion main body 55 and a plurality of first through portions 56.
When the second component 16 is fixed to the first member 15, the inner surface of the protruding portion main body 55 is brought into contact with the first engagement surface 31 of the first member 15.

The plurality of first through portions 56 are arranged in the z direction of the protruding portion main body 55 and pass through the protruding portion main body 55. When the second component 16 is fixed to the first member 15, one first engaging portion 32 is inserted into each of the plurality of first through portions 56.
As described above, the inner surface of the protruding portion main body 55 is brought into contact with the first engaging surface 31 of the first member 15, and the first engaging portion 32 is inserted into the plurality of first through portions 56. Thus, the second portion 16 and the first member 15 are engaged.

The protrusion 54 protrudes from the other end located in the circumferential direction of the second support member main body 25-2. The protruding portion 54 includes a protruding portion main body 57 and a plurality of second through portions 58.
When the second component 16 is fixed to the first member 15, the inner surface of the protruding portion main body 57 comes into contact with the second engagement surface 33 of the first member 15.

The plurality of second penetrating portions 58 are arranged in the z direction of the protruding portion main body 57 and penetrate the protruding portion main body 57. When the second component 16 is fixed to the first member 15, one second engaging portion 34 is inserted into each of the plurality of second through portions 57.
Thus, the inner surface of the protrusion main body 57 is in contact with the second engagement surface 33 of the first member 15, and the second engagement portion 34 is inserted into the plurality of second through portions 58. Thus, the protruding portion 54 engages with the first member 15.

  As described above, the first engagement portion 32 provided on the first engagement surface 31, the second engagement portion 34 provided on the second engagement surface 33, and the first engagement portion. 32 and the second through part 56 with which the second engaging part 34 engages, the first part 15 and the second part 16 are provided. When engaged, the connection between the first component 15 and the second component 16 can be strengthened.

  Moreover, the first component 15 and the second component are provided by having a plurality of the first engagement portion 32, the second engagement portion 34, the first penetration portion 56, and the second penetration portion 58, respectively. When the 16 is engaged, the connection between the first component 15 and the second component 16 can be further strengthened.

The upper surface 51a of the second support member 51 configured as described above is a surface that comes into contact with the lower end of the fixing member 2 (see FIG. 1).
As the material of the second support member 51, for example, a metal (for example, steel, stainless steel, aluminum, etc.) or a high-hardness resin (for example, nylon resin) is used as the material of the first support member 21. be able to.
As described above, by using a high-hardness resin (for example, nylon resin) as the material of the second support member 51, the second support member 51 can be obtained with sufficient strength of the second support member 51. The weight can be reduced. Thereby, since it becomes possible to achieve weight reduction of the 2nd member 16, construction of the seismic-reduction structure 11 can be performed easily.

The second damping member 22-2 includes a curved plate-like portion 41-2, a lower end portion 42, an engaging protrusion 43, and a protruding portion 43A.
The curved plate-like portion 41-2 includes a second suspension bolt housing portion 41B having the same configuration as the first suspension bolt housing portion 41A described above. The curved plate portion 41-2 has the same configuration as the curved plate portion 41-1 described above.
That is, the second attenuation member 22-2 has the same configuration as the first attenuation member 22-1 described above.

  The lower end portion 42 of the second damping member 22-1 has a function of suppressing the suspension bolt 3 from directly hitting the second support member 51 when the suspension bolt 3 (see FIG. 1) is greatly shaken by an earthquake or the like. including. Thereby, the breakage of the second support member 51 due to the contact with the suspension bolt 3 can be suppressed.

  Further, by having the protruding portion 43 </ b> A at the tip of the engaging protrusion 43, the engaging protrusion 43 is inserted into the mounting hole 27 of the second support member 51, and the second support member 51 receives the second attenuation. When the member 22-2 is mounted, it is possible to suppress the second damping member 22-2 from easily falling off the second support member 51.

The second damping member 22-2 configured as described above has a function of attenuating the vibration of the suspension bolt 3 when an earthquake or the like occurs.
As the material of the second damping member 22-2, for example, a material similar to the material of the first damping member 22-1 described above can be used, and by using such a material, the material is suspended. The vibration can be effectively reduced with respect to the suspension bolt 3 that vibrates with a small amplitude at a position near the ceiling of the bolt 3.
Moreover, since the vibration-reducing structure 11 is attached near the ceiling of the suspension bolt 3, a special installation space is almost unnecessary. Thereby, even when piping or other equipment is installed around the equipment 6, it can be easily installed.

It is preferable to color the surface of the second attenuation member 22-2 or use the colored second attenuation member 22-2. The color of the second attenuation member 22-2 is preferably a conspicuous color at a construction site where a ceiling suspension structure is applied, for example.
Specifically, when the ceiling body F shown in FIG. 1 is a gray system mainly composed of concrete, the color of the second attenuation member 22-2 is, for example, white or red having a hue different from the gray system Green, etc. are preferred.
By coloring the second attenuation member 22-2 with such a color, the operator can visually confirm the color of the second attenuation member 22-2 at the construction site. . Thereby, an operator can confirm easily whether installation of the 2nd attenuation member 22-2 is completed.
Moreover, when using resin as a material of the 2nd supporting member 51, you may color the 2nd supporting member 51 in the same color as the 2nd attenuation | damping member 22-2 mentioned above.

The above-described seismic attenuation structure 11 is fixed to the suspension bolt 3 in a state where the first component 15 and the second component 16 are connected so that the upper surfaces 21 a and 51 a are in contact with the lower end of the fixing member 2. Is done. The suspension bolt 3 is threadedly engaged with the female thread composed of the first and second suspension bolt threaded portions 28-1 and 28-2, and the first damping member 22-1 and the second damping member. A part of the suspension bolt 3 is disposed in a cylindrical space partitioned by the member 22-2.
The inner surfaces of the first and second damping members 22-1 and 22-2 are in contact with the suspension bolt 3. The side ends of the first and second damping members 22-1 and 22-2 are in contact with each other in the circumferential direction of the suspension bolt 3.
As described above, when the first damping member 22-1 and the second damping member 22-2 are in contact with each other in the circumferential direction of the suspension bolt 3, the suspension bolt 3 is greatly shaken by an earthquake or the like. It is possible to attenuate the shaking efficiently. Thereby, damage and breakage of the suspension bolt 3 can be suppressed.

According to the vibration-reducing structure 11 of the present embodiment, the vibration-reducing structure 11 is composed of first and second members 15 and 16 that are substantially halved, and a pair provided on the second member 16. The protrusions 53 and 54 are engaged with the first and second engagement surfaces 31 and 33 provided on the first member 15, so that the seismic structure 11 is attached to the suspension bolt 3. Thus, the vibration-reducing structure 11 can be attached to the suspension bolt 3 from the side of the suspension bolt 3.
Thereby, the seismic-reduction structure 11 can be easily attached not only to the newly provided suspension bolt but also to the existing suspension bolt 3 that supports the equipment 6.

  Further, the vibration-reducing structure 11 has the first and second damping members 22-1 and 22-2 that accommodate a part of the suspension bolt 3, so that the vibration of the suspension bolt 3 can be reduced. It becomes. Thereby, even if it is a case where a big shake by an earthquake etc. is received, the damage and fracture | rupture of the suspension bolt 3 can be suppressed.

  In FIG. 1, as an example, the case where the seismic structure 11 is attached to the suspension bolt 3 so that the upper surfaces 21 a and 51 a are in contact with the lower end of the fixing member 2 has been described as an example. When there is a hexagon bolt (not shown) immediately below the plate 4, the vibration reducing structure 11 may be attached to the suspension bolt 3 so that the upper surfaces 21a and 51a are in contact with the lower end of the hexagon bolt. .

  Moreover, in this Embodiment, the groove | channel extended in the circumferential direction of the 1st and 2nd supporting member main body 25-1 and 25-2 is taken as an example as 1st and 2nd recessed part 26A, 26B as an example. For example, a hole may be used instead of the groove.

  20 and 21 are perspective views showing the entirety of the vibration damping structure installation tool according to the embodiment of the present invention. FIG. 20 schematically shows a state where the first and second functional units 75 and 76 are closed. FIG. 21 schematically shows a state where the first and second functional units 75 and 76 are opened. 20 and 21, the same reference numerals are given to the same components.

  Referring to FIGS. 20 and 21, the vibration damping structure mounting tool 70 of the present embodiment is a tool used when mounting the vibration damping structure 11 described above to the suspension bolt 3 (see FIG. 1). Yes, it has a handle 71, a rotary joint 73, a first functional part 75, a second functional part 76, and screws 77 and 78.

The handle 71 has first and second handle members 81 and 82. The first and second handle members 81 and 82 intersect each other in the middle, and a rotary joint 73 is provided at the intersecting portion.
Thereby, the 1st and 2nd handle members 81 and 82 are connected in the state which can be opened and closed. The handle 71 and the rotary joint 73 may be made of a lightweight and strong metal material, for example. Specifically, as a material for the handle 71 and the rotary joint 73, for example, aluminum may be used.
As described above, by using aluminum as the material of the handle 71 and the rotary joint 73, it is possible to reduce the weight of the vibration-reducing structure mounting tool 70, thereby reducing the burden on the operator. .
In the present embodiment, a manual type tool is described as an example of the vibration reduction structure mounting tool 70. However, for example, a tool that can be opened and closed by air pressure or hydraulic pressure may be used. .

FIG. 22 is an enlarged side view of the first functional portion and the distal end portion of the first handle member. 22, the same components as those shown in FIGS. 20 and 21 are denoted by the same reference numerals.
FIG. 23 is a plan view of the first and second functional units in the closed state as viewed from the upper end side. In FIG. 23, the same components as those shown in FIGS. 20 to 22 are denoted by the same reference numerals.
FIG. 24 is a perspective view of the first and second functional parts in the closed state as seen from the handle part side. 24, the same components as those shown in FIGS. 20 to 23 are denoted by the same reference numerals.
FIG. 25 is a plan view of the first and second functional units in the opened state as viewed from the upper end side. In FIG. 25, the same components as those shown in FIGS. 20 to 24 are denoted by the same reference numerals.

20 to 25, the first functional unit 75 includes a first functional unit main body 83, a first support unit 83-1, a first member accommodating unit 84, and two first units. Projecting portion 85.
The first functional part main body 83 is provided at the distal end part 81 </ b> A of the first handle member 81. The first functional part main body 83 has a first angle θ1 such that the extending direction of the first member housing part 84 and the extending direction of the distal end part 81A of the first handle member 81 form a first angle θ1. The first handle member 81 is fixed to the front end 81 </ b> A with a screw 77. As a result, the first functional unit main body 83 is inclined with respect to the distal end 81 </ b> A of the first handle member 81.
The first angle θ1 can be appropriately set within a range of 30 to 75 °, for example.

The first support portion 83-1 is provided at the lower end of the first functional portion main body 83. The first support portion 83-1 is configured integrally with the first functional portion main body 83. The first support portion 83-1 has a function of supporting the lower end of the first support member 21 or the second support member 51.
The first support portion 83-1 has a semi-cylindrical through portion 83A. The protruding portion 43 of the first attenuation member 22-1 or the second attenuation member 22-2 is accommodated in the penetration portion 83A of the first functional portion main body 83. The shape of the penetrating portion 83A of the first support portion 83-1 is such that it surrounds the periphery of the protruding portion 43 of the first attenuation member 22-1 or the second attenuation member 22-2.

The first member accommodating portion 84 is provided inside the first functional portion main body 83. The first member accommodating portion 84 accommodates a part of the first member 15 or a part of the second member 16. The side surface 84a of the first member housing portion 84 is a smooth curved surface.
When the first functional portion 75 accommodates a part of the first member 15, the first member accommodating portion 84 is in a state where the first and second engaging surfaces 31 and 33 are exposed. A part of the member 15 is accommodated.
Further, when the first functional part 75 accommodates a part of the second member 16, the first member accommodating part 84 is in a state where the pair of projecting parts 53 and 54 are exposed, and the second member 16. Part of the house.

  The two first protrusions 85 have a shape that can be inserted into the first and second recesses 26A and 26B. The two first projecting portions 85 are provided on the side surface 84 a of the first member housing portion 84. The two first projecting portions 85 project in a direction away from the side surface 84 a of the first member housing portion 84.

In the present embodiment, the case where two protrusions 85 are provided has been described as an example, but the number of protrusions 85 is not limited to this. For example, one projecting portion extending in the circumferential direction of the first member housing portion 84 may be provided, and a groove capable of housing the projecting portion may be provided in the first and second members 15 and 16. Further, three or more protruding portions 85 may be provided.
Moreover, the formation position of the protrusion part 85 can be set suitably, and is not limited to the formation position of the protrusion part 85 shown in FIGS.

The second functional portion 76 includes a second functional portion main body 87, a second support portion 87-1, a second member accommodating portion 88, and two second projecting portions 89.
The second functional unit main body 87 is the same as the first functional unit main body 83 except that the shape is different from that of the first functional unit main body 83 and that the second functional unit main body 87 is provided at the tip of the second handle member 82. It is configured.

  The second functional unit main body 87 is configured such that the extending direction of the second member accommodating portion 88 and the extending direction of the tip end portion 82A of the second handle member 82 form the same angle as the first angle θ1. Further, the second handle member 82 is fixed to the distal end portion 82 A of the second handle member 82 with a screw 78. As a result, the second functional part main body 87 is inclined with respect to the tip end part 82 </ b> A of the second handle member 82.

The second support portion 87-1 has the same configuration as the first support portion 83-1 described above except that the second support portion 87-1 is provided at the lower end of the second functional portion main body 87. The second support portion 87-1 has a penetration portion 87A having the same shape as the penetration portion 83A described above.
In a state where the protruding portion 43 of the first damping member 22-1 and the protruding portion 43 of the second damping member 22-2 are accommodated in the through portions 83A and 87A, the first and second functional portions 75, When 76 is closed, the two protruding portions 43 are pressed by the first and second support portions 83-1 and 87-1.
Moreover, the protruding part 43 of the 1st damping member 22-1 and the protruding part 43 of the 2nd damping member 22-2 are accommodated in penetration part 83A, 87A, and a seismic-reduction structure is turned upside down. It can also be prevented from being attached.

The second member accommodating portion 88 is provided inside the second functional portion main body 87. The 2nd member accommodating part 88 is made into the shape similar to the 1st member accommodating part 84 demonstrated previously, and has the side surface 88a which is a smooth curved surface.
When supporting the first member 15, the second member accommodating portion 88 accommodates a part of the first member 15 with the first and second engaging surfaces 31 and 33 exposed. When the second member accommodation portion 88 supports the second member 16, the second member accommodation portion 88 accommodates a part of the second member 16 with the pair of protruding portions 53 and 54 exposed.

  The two second projecting portions 89 are provided on the side surface 88 a of the second member accommodating portion 88. The two second protrusions 89 are arranged to face the first protrusion 85 in a state where the first and second functional parts 75 and 76 are closed.

According to the seismic structure mounting tool 70 of the present embodiment, a part of the first member 15 with the first functional portion 75 exposing the first and second engagement surfaces 31 and 33. And a second member that contains a part of the second member 16 in a state in which the second functional portion 16 exposes the pair of projecting portions 53 and 54. By including the accommodating portion 88, when the handle 71 is closed, the pair of projecting portions 53 and 54 can be engaged with the first and second engaging surfaces 31 and 33.
In other words, by using the vibration reduction structure mounting tool 70, the vibration reduction structure 11 can be easily attached not only to the newly installed suspension bolt 3 but also to the existing suspension bolt 3 (see FIG. 1). it can.

Further, the first protrusion 85 provided in the first member accommodating portion 84 and inserted into the first recess 26 </ b> A to restrict the position of the first member 15, and the second member accommodating portion 88. And the second protrusion 89 that restricts the position of the second member 16 by being inserted into the second recess 26 </ b> B so that the first and second members 15, 16 are the first. And it becomes possible to suppress falling from the 2nd function parts 75 and 76.
Thereby, the work efficiency of the operator who attaches the vibration-reducing structure 11 with respect to the suspension bolt 3 can be improved.

  Furthermore, by attaching the vibration-reducing structure 11 to the suspension bolt 3, damage or breakage of the suspension bolt can be suppressed even when a large shake due to an earthquake or the like is received.

Further, as shown in FIGS. 23 to 25, a plurality of first and second protrusions 85 and 89 may be provided.
By providing a plurality of first projecting portions 85, the position of the first member 15 with respect to the first functional portion 75 can be accurately regulated. In addition, by providing a plurality of second projecting portions 89, the position of the second member 16 with respect to the second functional portion 76 can be accurately regulated.
Thereby, since it becomes difficult to generate | occur | produce the position shift of the 2nd member 16 with respect to the 1st member 15, the 1st member 15 and the 2nd member 16 can be engaged accurately.

In addition, as described above, the first functional unit 75 includes the first support unit 83-1 that supports the lower end of the first support member 21, and the second functional unit 76 includes the second support member. A second support portion 87-1 that supports the lower end of 51 may be included.
Thus, the 1st functional part 15 falls from the 1st functional part 15 because the 1st functional part 15 includes the 1st support part 83-1 which supports the lower end of the 1st support member 21. Can be suppressed.
Moreover, the second support member 51 falls from the second function unit 16 because the second function unit 16 includes the second support unit 87-1 that supports the lower end of the second support member 51. Can be suppressed.

  The first support portion 83-1 is shaped so as to surround the lower end 43 of the first damping member 22-1 projecting downward from the first support member 21. The second support portion 87-1 may have a shape surrounding the lower end portion 43 of the second damping member 22-2 that protrudes below the second support member 51.

  By having such a shape, when the handle 71 is closed, the first and second support portions 83-1 and 83-2 are placed below the first support member 21 in the direction toward the suspension bolt 3. The lower end portion 42 of the protruding first attenuation member 22-1 and the lower end portion 42 of the second attenuation member 22-2 protruding below the second support member 51 can be pressed.

Further, the first and second functional parts 75 and 76 have a structure in which the first functional part 75 and the second functional part 76 do not contact with each other in a state immediately after the vibration reducing structure 11 is attached to the suspension bolt 3. It may be.
By adopting such a configuration, the entire pair of projecting portions 53 and 54 constituting the second member 16 with respect to the first and second engaging surfaces 31 and 33 constituting the first member 15 are arranged. Can be engaged.

The first and second protrusions 85 and 89 may have a shape that can be inserted into both the first and second recesses 26A and 26B.
By adopting such a configuration, the first member 15 or the second member 16 can be mounted (supported) on either the first or second functional portion 75 or 76, so that the suspension bolt The workability when attaching the vibration reducing structure 11 to 3 can be further improved.

As a material of the first and second functional portions 75 and 76 described above, for example, a lightweight and highly rigid metal material (for example, aluminum) may be used.
By configuring the first and second functional parts 75 and 76 using such a metal material, it is possible to reduce the weight of the vibration-reducing structure mounting tool 70.

FIG. 26 is a perspective view of the first functional unit that supports the first member and the second functional unit that supports the second member as viewed from the handle side. In FIG. 26, the same components as those shown in FIGS.
FIG. 27 is a plan view of the first and second functional units and the first and second parts shown in FIG. 26 as viewed from the upper end side of the first and second parts. In FIG. 27, the same components as those shown in FIGS.

Next, with reference to FIGS. 1-27, the construction method of the seismic-reduction structure 11 using the seismic-reduction structure attachment tool 70 is demonstrated.
First, the first member 15 is attached so that the position of the first member 15 is restricted to one of the first and second function portions 75 and 76, and the other function portion is attached to the other function portion. The second member 16 is attached so that the position of the second member 16 is regulated (first and second member attaching steps).

In FIGS. 26 and 27, as an example, the case where the first member 15 is attached to the first functional portion 75 and the second member 16 is attached to the second functional portion 76 is illustrated. The second member 16 may be attached to the first functional portion 75 and the first member 15 may be attached to the second functional portion 76.
In the case of FIG. 26 and FIG. 27, the two first protrusions 85 are inserted into the first recess 26A, so that the first functional unit 75 supports the first member 15 and the two second The second functional unit 76 supports the second member 16 by the protrusion 89 being inserted into the second recess 26 </ b> B.

Next, the handle 71 is opened, and the first suspension bolt screwing portion 28-1, the first suspension bolt housing portion 41A, the second suspension bolt screwing portion 28-2, and the second suspension bolt housing portion 41B. Then, the handle 71 is closed so that the suspension bolt 3 is accommodated, and the pair of protrusions 53 and 54 are engaged with the first and second engagement surfaces 31 and 33, so that the suspension bolt is engaged. 3 is attached with a vibration-reducing structure 11 (a vibration-reducing structure mounting process).
At this time, the first engaging portion 32 is engaged with the first through portion 56 provided in the protruding portion 53 and the second engaging portion is connected to the second through portion 58 provided in the protruding portion 54. 34 is engaged.

Next, the vibration-reducing structure 11 mounted on the suspension bolt 3 is rotated to bring the vibration-reducing structure 11 into contact with the lower end of the fixing member 2 (the lower surface of the deck plate 4) (vibration-reducing structure contacting step). ).
Thereby, the construction of the vibration reduction structure 11 using the vibration reduction structure attachment tool 70 is completed.

According to the construction method of the vibration-reducing structure 11 of the present embodiment, the first member 15 and the second member are engaged by hand by using the vibration-reducing structure attaching tool 70 described above. In comparison, the seismic reduction structure 11 can be easily constructed in a short time and with a small force.
Moreover, by attaching the above-mentioned vibration-reducing structure 11 to the suspension bolt 3, it is possible to suppress damage and breakage of the suspension bolt 3 even when it receives a large shake due to an earthquake or the like.

  Even if the vibration-reducing structure 11 is manually attached to the suspension bolt 3 without using the vibration-reducing structure mounting tool 70, the suspension bolt 3 is damaged even if it is subjected to a large shake due to an earthquake or the like. And breakage can be suppressed.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and within the scope of the present invention described in the claims, Various modifications and changes are possible.

  The present invention reduces the vibration of the suspension bolt that supports the facility equipment, so that the facility equipment can be stably supported even when subjected to shaking such as an earthquake, a seismic structure mounting tool, And it can be applied to the construction method of seismic reduction structure.

  DESCRIPTION OF SYMBOLS 1 ... Ceiling device with a vibration-reducing structure, 2 ... Fixing member, 3 ... Suspension bolt, 4 ... Deck plate, 4A, FA ... Groove, 5 ... Connection tool, 5a ... Lower support piece, 5b ... Extension piece, 5c ... upper support piece, 6 ... equipment, 6a ... support piece, 8 ... bolt, 9, 10 ... nut, 11 ... anti-vibration structure, 15 ... first member, 16 ... second member, 21 ... first 21a, 51a ... upper surface 22-1 ... first damping member, 22-2 ... second damping member, 25-1 ... first supporting member body, 25-2 ... second supporting member body. , 26-1 ... first rib, 26-2 ... second rib, 26A ... first recess, 26B ... second recess, 27 ... mounting hole, 28-1 ... first suspension bolt screwing portion 28-2 ... second suspension bolt screwing portion, 29-1 ... first damping member mounting portion, 29-2 ... second damping member mounting portion, 31 ... first 32 ... 1st engagement part, 33 ... 2nd engagement surface, 34 ... 2nd engagement part, 41A ... 1st suspension bolt accommodating part, 41B ... 2nd suspension bolt accommodation part, 41-1, 41-2 ... curved plate-like portion, 41-1a, 51a ... outer surface, 42 ... lower end portion, 43 ... projecting portion for engagement, 43A ... protruding portion, 51 ... second support member, 52 ... second Damping member 53, 54 ... projecting portion, 55, 57 ... projecting portion main body, 56 ... first penetrating portion, 58 ... second penetrating portion, 70 ... seismic structure mounting tool, 71 ... handle, 73 ... Rotating joint, 75... First functional part, 76... Second functional part, 77, 78... Screw, 81... First handle member, 81A, 82A. ... 1st functional part main body, 83A, 87A ... penetrating part, 83-1 ... 1st support part, 84 ... 1st member accommodating part, 4a, 88a ... side surface, 85 ... first protrusion 87-1 ... second support portion, 88 ... second member accommodating portion, 89 ... second protrusion, F ... ceiling building frame, .theta.1 ... angle

Claims (16)

A cylinder that surrounds the periphery of the portion of the plurality of suspension bolts that are suspended from the ceiling and supported by the ceiling by being fixed to a fixing member installed in the ceiling, and that is directly below the fixing member. A seismic reduction structure,
One half of the seismic reduction structure, a first support member, and a first member having a first damping member;
A second member that is the other half of the vibration-reducing structure and includes a second support member, a pair of protrusions, and a second damping member, and is fixed to the first member. Prepared,
The first support member is disposed on the ceiling side, and is provided with a first suspension bolt threaded portion provided with a female screw to which the suspension bolt can be threaded, and below the first suspension bolt threaded portion. A first damping member mounting portion provided; a first engagement surface engaged with one of the protrusions; a second engagement surface engaged with the other protrusion; and the first A first recess provided on an outer wall of the first support member located between the first engagement surface and the second engagement surface,
The first damping member is mounted on the first damping member mounting portion, is made of a material capable of damping vibration, and includes a first suspension bolt housing portion capable of housing the suspension bolt. And
The second support member is disposed on the ceiling side, is provided with a female screw to which the suspension bolt can be screwed, and is disposed so as to face the first suspension bolt screwing portion. A screwing portion, a second damping member mounting portion provided so as to face the first damping member mounting portion below the second suspension bolt screwing portion, and the second support member. A second recess provided in the outer wall,
The pair of protrusions are arranged to face each other, and are inserted into the first and second engaging surfaces to fix the second support member and the first support member,
The second damping member is mounted on the second damping member mounting portion, is made of a material capable of damping vibration, and includes a second suspension bolt housing portion capable of housing the suspension bolt. A seismic-reducing structure characterized by A plurality of first ribs are provided on the outer wall of the first support member,
A plurality of second ribs are provided on the outer wall of the second support member,
The first recess is a groove extending in a circumferential direction of an outer wall of the first support member defined by the plurality of first ribs;
2. The vibration-reducing structure according to claim 1, wherein the second recess is a groove extending in a circumferential direction of an outer wall of the second support member defined by the plurality of second ribs. . Of the pair of projecting portions, one projecting portion is provided with a first penetrating portion that penetrates the projecting portion, and the other projecting portion has a second penetrating portion that penetrates the projecting portion. Is provided,
The first engagement surface is provided with a first engagement portion that engages with the first through portion,
3. The vibration-reducing structure according to claim 1, wherein a second engagement portion that engages with the second through portion is provided on the second engagement surface.   4. The vibration-reducing structure according to claim 1, wherein the first damping member and the second damping member are in contact with each other in a circumferential direction of the suspension bolt. 5. . The lower end portion of the first attenuation member is disposed so as to protrude downward from the lower end of the first support member,
5. The reduction according to claim 1, wherein a lower end portion of the second damping member is disposed so as to protrude downward from a lower end of the second support member. Seismic structure.   The said 2nd recessed part is the same shape as a said 1st recessed part, The earthquake-reduction structure of any one of Claims 1 thru | or 5 characterized by the above-mentioned.   The material of the first and second damping members is a rubber or elastomeric high damping material having a rubber hardness of 60 degrees or more and a loss coefficient (tan δ) of 0.5 or more. Item 7. The vibration-reducing structure according to any one of Items 1 to 6.   The material for the first and second support members is a nylon resin, and the vibration-reducing structure according to any one of claims 1 to 7. A seismic structure mounting tool for use in attaching the seismic attenuation structure according to any one of claims 1 to 8 to the suspension bolt,
A handle including first and second handle members that can be opened and closed by a rotary joint;
A first functional part provided at a tip of the first handle member;
A second functional part provided at the tip of the second handle member;
With
The first functional portion includes a first member accommodating portion that accommodates a part of the first member in a state where the first and second engagement surfaces are exposed, and the first member accommodating And a first protrusion that regulates the position of the first member by being inserted into the first recess.
The second functional part is provided in a second member accommodating part that accommodates a part of the second member in a state where the pair of projecting parts are exposed, and the second member accommodating part, And a second protrusion that restricts a position of the second member by being inserted into the second recess.   The seismic structure mounting tool according to claim 9, wherein a plurality of the first and second protrusions are provided. The first functional part includes a first support part that supports a lower end of the first support member;
The seismic structure mounting tool according to claim 9 or 10, wherein the second functional part includes a second support part that supports a lower end of the second support member. The first support portion is configured to surround a portion of the first damping member that protrudes below the first support member,
The said 2nd support part is a shape which surrounds the circumference | surroundings of the part which protruded below the said 2nd support member among the said 2nd attenuation members, The vibration reduction of Claim 11 characterized by the above-mentioned. Structure installation tool. The first functional portion is fixed in a state inclined at a first angle with respect to a tip portion of the first handle member,
The second functional unit is fixed in a state in which the second functional unit is inclined at the same angle as the first angle with respect to a distal end portion of the second handle member. The vibration reduction structure installation tool of any one of Claims.   The first and second functional parts are structures in which the first functional part and the second functional part are not in contact with each other in a state in which the vibration damping structure is attached to the suspension bolt. The vibration-reducing structure installation tool according to any one of claims 9 to 13.   The said 1st and 2nd protrusion part is a shape which can be inserted with respect to both of the said 1st and 2nd recessed part, The any one of Claims 9 thru | or 14 characterized by the above-mentioned. Seismic structure mounting tool. A construction method of a seismic structure using the seismic structure mounting tool according to any one of claims 9 to 15,
The first member is attached to one of the first and second functional parts so that the position of the first member is restricted to one of the functional parts, and the second member is attached to the other functional part. First and second member attaching steps for attaching the second member such that the position is regulated;
Opening the handle portion, the suspension bolt is connected to the first suspension bolt screwing portion, the first suspension bolt housing portion, the second suspension bolt screwing portion, and the second suspension bolt housing portion. The handle is closed and the pair of protrusions are engaged with the first and second engaging surfaces so that the vibration-reducing structure is attached to the suspension bolt. The seismic structure mounting process to be installed,
A vibration-reducing structure abutting step of abutting the vibration-reducing structure against the lower end of the fixing member by rotating the vibration-reducing structure mounted on the suspension bolt;
A method for constructing a seismic reduction structure characterized by comprising:

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