JP5917182B2 - Anti-vibration suspended vibration-reducing structure - Google Patents

Description

  The present invention relates to an anti-vibration hanging vibration-reducing structure that supports equipment on a ceiling.

  Various equipment is installed in a building such as a condominium or a building, and there are a lot of equipment supported in a suspended state from the ceiling depending on the application and installation situation. For example, an indoor unit of an air conditioner, a lighting device, an air conditioning duct, piping, and the like can be given. In this case, as shown in FIGS. 9 and 10, the equipment device W is generally supported by a ceiling suspension structure 100 (see, for example, Patent Document 1).

  This ceiling-suspended structure 100 has a plurality of upper ends screwed to the inserts 102 attached to the ceiling structure 101 and lower ends connected to a connecting fitting 103 fixed to the equipment W. A suspension bolt 104 is provided. With the ceiling structure 100 configured as described above, the equipment device W is stably supported by the ceiling.

By the way, an earthquake is an inevitable natural phenomenon that occurs in association with the activity of the Earth's internal structure for approximately 4.6 billion years after the birth of the Earth. Various countermeasures against earthquakes have been made under the Western science and technology philosophy of overcoming and overcoming nature.
For example, an earthquake resistant structure is known as one of them. This is for the purpose of resisting an earthquake with strength. For example, by improving the strength (rigidity) of the above-described ceiling-suspended structure 100 itself, the equipment W that is a protection target is protected from the vibration of the earthquake. It is a structural method to protect.

  In addition, seismic isolation structures are known as other conventional earthquake countermeasures. The purpose of this is to make the effects of earthquakes as zero as possible. Seismic isolation mechanisms such as isolators and slide rails that can be flexibly displaced in the horizontal direction while supporting the object to be protected in the vertical direction. And the seismic isolation mechanism moves slowly so that the vibration of the earthquake is not transmitted to the object to be protected.

JP-A-7-166711

  By the way, the conventional ceiling-suspended structure 100 adopts the earthquake-resistant structure method as described above. However, depending on the magnitude of the assumed earthquake, excessive deformation (movement distance) is suppressed and impact force is alleviated. Since the viewpoint was lacking, it was not sufficient in terms of protecting the equipment W when excessive acceleration was applied to the equipment W.

Specifically, as shown in FIG. 10, when a force F due to acceleration acts on the equipment W due to the occurrence of an earthquake, the suspension bolt 104 is bent and deformed due to the influence. At this time, since excessive acceleration acts in the case of a large earthquake, the bending deformation of the suspension bolt 104 also increases, and as shown in FIG. 11, for example, on the upper end side of the suspension bolt 104 that is a coupling portion with the insert 102. A large bending moment was likely to occur. Therefore, the suspension bolt 104 is broken or deformed, and it is difficult to protect the equipment device W. In addition, the M figure in a figure is a stress figure of the bending moment which acts on the suspension bolt 104. FIG.

In addition, along with the bending deformation of the suspension bolt 104, as shown in FIG. 12, the connection fitting 103 may be deformed (twisted or the like) or the connection fitting 103 and the suspension bolt 104 may be loosened. In this respect as well, it was difficult to protect the equipment W.

  On the other hand, when the suspension bolt 104 is lengthened, it can be expected to function as a seismic isolation structure, but in order to respond to a large earthquake, in addition to securing the suspension length, the equipment W can be displaced. It is necessary to secure a large space. However, for example, when a plurality of facility devices W are suspended and supported in a limited space in the ceiling, it is difficult to sufficiently secure the suspension length and the space.

  The present invention has been made in view of such circumstances, and the object thereof is not to require a large movable space, and can efficiently absorb the input vibration energy within a small space, thereby stabilizing the equipment. It is to provide an anti-vibration suspended vibration-reducing structure that can be suspended and supported.

In order to achieve the above object, the present invention provides the following means.
(1) A vibration-proof suspended vibration-reducing structure according to the present invention is a structure that supports equipment suspended from a ceiling, and includes a plurality of suspensions whose upper ends are screwed to fixtures provided on a ceiling casing. A bolt, a connector provided at a lower end of each of the plurality of suspension bolts and connected to a connection piece fixed to the equipment, and the suspension bolt that consumes vibration energy of the input vibration A vibration reduction member that reduces a vibration load acting on the first and second vibration reduction members, the first engagement member fixed to the equipment, and the suspension bolt. A second engaging member that engages with each other so as to be relatively movable while being applied with a predetermined resistance force. The first engaging member has a pair of disc springs whose outer peripheral edges coincide with each other. , Having a disc body superimposed in an upside down direction, The engaging member includes an annular body having a pair of ring plates that sandwich the outer peripheral edge portion of the disk body with a predetermined force from both sides in the vertical direction over the entire circumference, and the plurality of suspension bolts include the annular body The vibration energy accumulated in the suspension bolt is consumed by relative movement of the first engagement member and the second engagement member.

According to the vibration-proof hanging vibration-reducing structure according to the present invention, when vibration is input from the outside to the equipment due to the occurrence of an earthquake or the like, the vibration starts to be transmitted to the whole vibration-proof hanging vibration-reducing structure, The vibration reducing member consumes the vibration energy of the vibration by, for example, attenuation and absorption.
Specifically, the equipment device and the suspension bolt that supports the equipment device are suspended relative to each other by vibration, and the first engagement member and the second engagement member move relative to each other accordingly. . At this time, since the first engagement member and the second engagement member are engaged with each other so as to be relatively movable while a predetermined resistance force is applied, vibration energy can be attenuated and absorbed by the resistance force. . Thereby, it can reduce by the part which consumed the vibration energy amount which acts on a suspension bolt among the total energy amount of vibration, and can reduce the vibration load to a suspension bolt. In other words, it can be reduced.
As a result, the occurrence of breakage or deformation of the suspension bolt can be suppressed, and the equipment can be stably suspended and protected.

Moreover, since the vibration reduction member provided with the 1st engagement member fixed to the installation apparatus and the 2nd engagement member provided in the suspension bolt is utilized, an installation apparatus is enlarged by measures, such as lengthening a suspension bolt, for example. It is not necessary to adopt a conventional seismic isolation system that absorbs vibration by moving it. Therefore, the above-described effects can be achieved without requiring a large movable space.
In addition, when the vibration is input, the first engagement member and the second engagement member can be expected to act as a cushion, so that the peak value of the initial impact acceleration can be reduced, and the equipment can be effectively used from the impact force of the vibration. Easy to relax. Furthermore, even if a large earthquake occurs, for example, it is difficult for the equipment and the suspension bolt to come into contact with each other, so that it is easy to effectively prevent deformation due to contact from occurring on the suspension bolt.

In this case, when the equipment and the suspension bolt are displaced relative to each other by vibration, the annular body moves in the radial direction relative to the disk body, so that sliding friction resistance is generated between the two. Thereby, vibration energy can be attenuated, absorbed and consumed, and the vibration load on the suspension bolt can be reliably reduced and reduced. Therefore, the equipment can be suspended from the ceiling more stably.
In particular, since the annular body can move relative to the disk body in any direction of 360 degrees, vibration energy can be consumed effectively. In addition, since the plurality of suspension bolts are connected to the annular body, the vibration load on the plurality of suspension bolts can be reduced simultaneously to reduce the vibration.

In antivibration suspension down Shin structure, wherein one of the first engagement member and the second engagement member has a rod-like body extending along a radial direction of the bolt axis of the hanger rod, the first It is preferable that the other of the engaging member and the second engaging member has an attenuating cylindrical body in which an attenuating material is enclosed, and at least a tip portion of the rod-like body is embedded in the attenuating material.

  In this case, when the equipment and the suspension bolt are relatively displaced by vibration, the damping cylinder and the rod-like body move relatively, so that the rod-like body having at least a tip embedded in the damping material has a resistance force. Move inside the damping material while receiving. Thereby, vibration energy can be attenuated, absorbed and consumed, and the vibration load on the suspension bolt can be reliably reduced and reduced. Therefore, the equipment can be suspended from the ceiling more stably.

Antivibration suspension decreased seismic structure is a structure for ceiling support equipment, and a plurality of hanging bolts upper end is screwed against the fixture provided in the ceiling skeleton, a plurality of the suspension Reduced vibration load acting on the suspension bolt by consuming the vibration energy of the input vibration and the connecting tool provided at the lower end of the bolt and connected to the connecting piece fixed to the equipment A vibration reducing member that is provided, wherein the vibration reducing member is provided with a first engagement member provided on any one of the plurality of suspension bolts, and the first engagement member among the plurality of suspension bolts. A second engagement member provided on any of the suspension bolts excluding the suspended suspension bolt and engaged with the first engagement member so as to be relatively movable while a predetermined resistance force is applied to the first engagement member; The first engaging member and the second engaging portion The relative movement of, it is preferable to consume the vibration energy stored in the hanger rod.

According to antivibration suspension down Shin structure, when vibration from the outside is input to the equipment by the earthquake or the like, but this vibration is started transmitted to the whole of the anti-vibration suspension down Shin structure, vibration reducing member The vibration energy of the vibration is consumed by attenuation and absorption, for example.
Specifically, a plurality of suspension bolts that support and suspend the equipment are relatively displaced from each other, but the suspension bolts are connected via the first engagement member and the second engagement member. The first engagement member and the second engagement member move relative to each other with the relative displacement. At this time, since the first engagement member and the second engagement member are engaged with each other so as to be relatively movable while a predetermined resistance force is applied, vibration energy can be attenuated and absorbed by the resistance force. . Thereby, it can reduce by the part which consumed the vibration energy amount which acts on a suspension bolt among the total energy amount of vibration, and can reduce the vibration load to a suspension bolt. In other words, it can be reduced.
As a result, the occurrence of breakage or deformation of the suspension bolt can be suppressed, and the equipment can be stably suspended and protected.

Moreover, since it is the structure which connects suspension bolts via a 1st engagement member and a 2nd engagement member, a vibration is absorbed by moving a equipment apparatus largely by countermeasures, such as lengthening a suspension bolt, for example. It is not necessary to adopt the conventional seismic isolation system. Therefore, the above-described effects can be achieved without requiring a large movable space.
In addition, when the vibration is input, the first engagement member and the second engagement member can be expected to act as a cushion, so that the peak value of the initial impact acceleration can be reduced, and the equipment can be effectively used from the impact force of the vibration. Easy to relax. Furthermore, even if a large earthquake occurs, for example, it is difficult for the equipment and the suspension bolt to come into contact with each other, so that it is easy to effectively prevent deformation due to contact from occurring on the suspension bolt.

  According to the vibration-proof suspended vibration-reducing structure according to the present invention, a large movable space is not required, the input vibration energy can be efficiently absorbed in a small space, and the equipment is stably supported and suspended. can do.

It is sectional drawing which shows 1st Embodiment of the vibration proof hanging vibration reduction structure which concerns on this invention. It is sectional drawing along the AA line shown in FIG. It is an enlarged view of the vibration reduction member shown in FIG. It is sectional drawing along the BB line shown in FIG. It is sectional drawing which shows the modification of the anti-vibration hanging vibration reduction structure in 1st Embodiment. FIG. 6 is a perspective view of the vibration reducing member shown in FIG. 5. It is sectional drawing of the vibration reduction member shown in FIG. A second example of a vibration isolating suspension down Shin structure is a sectional view showing a. It is a whole perspective view which shows an example of the conventional anti-vibration hanging vibration reduction structure. FIG. 10 is a side view of the vibration-proof hanging vibration reduction structure shown in FIG. 9. FIG. 11 is a simplified diagram when an external force is applied to the equipment from the state shown in FIG. 10 and the suspension bolt is bent and deformed. It is a figure which shows a state when external force acts on equipment from the state shown in FIG. 10, and a suspension bolt bends and deforms.

Hereinafter, a first embodiment of a vibration-proof suspended vibration-reducing structure according to the present invention will be described with reference to the drawings.
<First Embodiment>
As shown in FIGS. 1 and 2, the vibration-proof suspended vibration-reducing structure 1 of the present embodiment is a unit that supports and suspends equipment equipment W from a ceiling, and has a ceiling frame F (for example, a ceiling concrete structure). The four suspension bolts 3 whose upper ends are screwed to the inserts (fixtures) 2 embedded in the object) and the lower ends of these four suspension bolts 3 are respectively fixed to the equipment W. And a connecting tool 5 connected to the connected connecting piece 4.

In the present embodiment, the suspension bolt 3 is suspended from the ceiling housing F in the vertical direction. And the axis | shaft which penetrates the center of each suspension bolt 3 is called the bolt axis | shaft O1, the direction which goes to the ceiling housing F side from the connection piece 4 side along this bolt axis | shaft O1 is called upper side, and the reverse direction is called lower side. The direction orthogonal to the bolt axis O1 is referred to as the radial direction. Furthermore, the direction in which the suspension bolts 3 are arranged with the equipment device W sandwiched therebetween in the radial direction is referred to as the left-right direction L1, and the direction orthogonal to the left-right direction L1 in the radial direction is referred to as the front-rear direction L2.
Moreover, the facility equipment W is not particularly limited, and examples thereof include an indoor unit of an air conditioner.

  The suspension bolt 3 is a bolt having a predetermined diameter and length, and is suspended from the ceiling case F by screwing the upper end of the suspension bolt 3 to the insert 2 as described above. At this time, the suspension bolts 3 are arranged at intervals in the left-right direction L1 and the front-rear direction L2. Moreover, the lower end part of each suspension bolt 3 is inserted in the connection hole which the connection piece 4 mentioned later does not illustrate.

The connecting piece 4 is, for example, an L-shaped plate piece fixed to the four corners of the equipment device W, and the connecting hole is formed in the flange portion 4a protruding from the side surface of the equipment device W toward the outside in the left-right direction L1. Has been. And the suspension bolt 3 inserted in this connection hole is reliably connected with respect to this flange part 4a by the flat plate washer 10 and the nut 11 which were each arrange | positioned at the upper surface side and lower surface side of the flange part 4a. .
As a result, the equipment device W is suspended and supported by the four suspension bolts 3. The lower surface of the equipment W is flush with a ceiling interior panel (not shown). Further, the flat washer 10 and the nut 11 described above function as the connector 5.

By the way, the vibration-proof suspension vibration reduction structure 1 of the present embodiment includes a vibration reduction member (a vibration reducer) 15 that consumes the vibration energy of the input vibration and reduces the vibration load acting on the suspension bolt 3. ing.
Specifically, the first engagement member 20 fixed to the top wall surface of the equipment device W and the suspension bolt 3 are provided, and a predetermined resistance force is applied to the first engagement member 20 in the radial direction. And a second engagement member 30 engaged with each other so as to be relatively movable. The vibration energy accumulated in the suspension bolt 3 can be consumed by the relative movement of the first engagement member 20 and the second engagement member 30.

This will be described in more detail.
As shown in FIGS. 3 and 4, the first engagement member 20 includes a base member 21 fixed to a substantially central portion of the top wall surface of the equipment device W, a disc body 23 including a pair of disc springs 22, It has.
The base member 21 includes a base plate 21a fixed to the top wall surface of the equipment device W, and base bolts 21b erected upward from the base plate 21a.
The disc spring 22 is configured to be elastically deformable in the vertical direction, and constitutes the disc body 23 by being overlapped in the upside down direction with the outer peripheral edge portions thereof aligned with each other. The disc body 23 is inserted into the base bolt 21b so as to be coaxial with the base bolt 21b and fixed so as to be sandwiched from above and below by two nuts 24 attached to the base bolt 21b. Has been. At this time, the disk body 23 is fixed in a state of being pressed from above and below by the two nuts 24.

The second engagement member 30 includes an annular body 32 having a pair of ring plates 31 that sandwich the outer peripheral edge portion of the disk body 23 with a predetermined force from both sides in the vertical direction over the entire circumference.
The ring plate 31 is, for example, an annular steel plate that surrounds the base bolt 21b from the outside in the radial direction, and has an inner diameter smaller than the outer diameter of the disc spring 22 and an outer diameter larger than the outer diameter of the disc spring 22. Is formed. The pair of ring plates 31 are arranged so as to sandwich the disc body 23 from both sides in the vertical direction, and are connected by a plurality of connecting bolts 33 and nuts 34.
Thereby, as above-mentioned, the annular body 32 has pinched | interposed the outer peripheral edge part of the disc body 23 from the both sides of an up-down direction over the perimeter using a pair of ring board 31 by predetermined force.

  The plurality of connecting bolts 33 and nuts 34 are arranged on the outer peripheral edge side of the annular body 32, and eight are arranged at equal intervals around the axis O2 of the base bolt 21b. However, the number and arrangement of the connecting bolts 33 and nuts 34 are not limited to the illustrated example. Also, a disc spring 35 is interposed between the connecting bolt 33 and the one ring plate 31 positioned on the upper side and between the nut 34 and the other ring plate 31 positioned on the lower side.

By the way, an annular connecting ring plate 36 having an inner diameter larger than the outer diameter of the disc spring 22 and an outer diameter larger than the outer diameter of the ring plate 31 is disposed between the pair of ring plates 31 described above. And is sandwiched between the pair of ring plates 31 by the connecting bolt 33 and the nut 34 described above.
The four suspension bolts 3 are integrally connected to the connection ring plate 36 via the connection unit 40.

The connection unit 40 includes a first connection bolt 42 having one end connected to the suspension bolt 3 via a connection joint 41 (see FIGS. 1 and 2) provided in the middle of the suspension bolt 3, and a connection ring plate 36. The second connection bolt 43 connected to the connection ring plate 36 through the connection hole 36 a formed in the first connection bolt 36 is connected to the other end of the first connection bolt 42 and the other end of the second connection bolt 43. And a connecting tool 44.
The connection joint 41 is positioned on the upper side of the equipment W by being screwed to the suspension bolt 3, for example, and the connection port 41 a in which a thread groove is formed is directed to the first engagement member 20 side. ing. And the one end part of the 1st connection bolt 42 is screwed by this connection port 41a.

The second connection bolt 43 has a fork end portion 43a at one end, and is disposed so as to sandwich the connection ring plate 36 from the vertical direction. The fork end portion 43a is fixed to the connection ring plate 36 by a connection bolt 45 inserted through the connection hole 36a. Four connection holes 36a are formed every 90 degrees with the axis O2 of the base bolt 21b as the center. However, the number and the arrangement of the connecting holes 36a are not limited to the illustrated example.
The connecting tool 44 is, for example, a turnbuckle, and connects the first connecting bolt 42 and the second connecting bolt 43 with a predetermined tension.

According to the vibration-proof suspended vibration-reducing structure 1 configured as described above, when vibration is input to the equipment W from the outside due to an earthquake or the like, the vibration is transmitted to the entire vibration-proof suspended vibration-reducing structure 1. For example, the suspension bolt 3 begins to bend and deform, but the vibration reducing member 15 can consume the vibration energy of the vibration.
Specifically, the equipment device W and the suspension bolt 3 that supports the equipment device W in a suspended manner are relatively displaced by vibration in the left-right direction L1 and the front-rear direction L2, and accordingly, the first engagement member 20 and the second engagement member 30 move relative to each other. At this time, since the first engagement member 20 and the second engagement member 30 are engaged with each other so as to be relatively movable while a predetermined resistance force is applied, vibration energy is attenuated and absorbed by the resistance force. Can be consumed. That is, since the annular body 32 moves in the radial direction relative to the disk body 23, a sliding frictional resistance is generated between them, and thereby vibration energy can be attenuated and absorbed and consumed.

Thereby, out of the total energy amount of vibration, the amount of vibration energy accumulated in the suspension bolt 3 can be reduced by the consumed amount. Therefore, the vibration load acting on the suspension bolt 3 can be reduced. That is, the vibration can be reduced.
As a result, bending deformation, breakage, and the like that occur in the suspension bolt 3 can be effectively suppressed, and the equipment device W can be stably suspended and supported without being excessively shaken.

  In particular, since the annular body 32 can move relative to the disk body 23 in any direction of 360 degrees, vibration energy can be consumed effectively. Further, since the four suspension bolts 3 are connected to the annular body 32 via the connection unit 40 and the connection ring plate 36, the vibration load on the four suspension bolts 3 is simultaneously reduced to reduce the vibration. It is possible to make it.

  Moreover, since the vibration reduction member 15 which comprises the 1st engagement member 20 fixed to the installation equipment W and the 2nd engagement member 30 provided in the suspension bolt 3 is utilized, for example, the suspension bolt 3 is lengthened etc. Therefore, it is not necessary to adopt a conventional seismic isolation system that absorbs vibration by moving the equipment W greatly by the above measures. Therefore, the above-described effects can be achieved without requiring a large movable space.

  Further, since the first engagement member 20 and the second engagement member 30 can be expected to act as cushions when vibration is input, the peak value of the initial impact acceleration can be reduced, and the equipment device W can be subjected to vibration impact force. It is easy to relax effectively. Furthermore, even if a large earthquake occurs, for example, the equipment W and the suspension bolt 3 are difficult to directly contact with each other, so that it is easy to effectively prevent the suspension bolt 3 from being deformed by contact.

  Thus, according to the vibration-proof suspended vibration-reducing structure 1 according to this embodiment, the input vibration energy can be efficiently absorbed in a small space without requiring a large movable space, and the equipment W can be It can be stably supported by hanging from the ceiling.

(Modification of the first embodiment)
In the first embodiment, the first engagement member 20 includes a disk body 23 having a pair of disc springs 22, and the second engagement member 30 includes an annular body 32 having a pair of ring plates 31. However, the present invention is not limited to this case.
For example, as shown in FIG. 5, the first engagement member 52 includes a wedge rod (rod-like body) 60, and the second engagement member 53 attenuates at least the distal end portion 60 a of the wedge rod 60 in an attenuation material 66. A configuration including the cylindrical body 65 may be used.

  The vibration-proof suspended vibration-reducing structure 50 provided with the vibration reducing member (vibrator) 51 in this case will be described in detail. As shown in FIGS. 5 to 7, the wedge rod 60 is a rod-like member extending along the left-right direction L1, and both end portions in the left-right direction L1 function as tip portions 60a. And this wedge rod 60 is attached to the top wall surface of the equipment device W via the fixing bracket 61 in a state in which the tip end portion 60a faces the two suspension bolts 3 facing the left-right direction L1 across the equipment device W. It is fixed. Moreover, the front-end | tip part 60a of the wedge bar 60 is sharpened so that it may reduce in diameter gradually as it goes to the suspension bolt 3. As shown in FIG.

  The damping cylinder 65 described above is provided at one end of the second connecting bolt 43 constituting the second engaging member 53. The damping cylinder 65 has a bottomed cylinder shape in which the damping material 66 is enclosed, and the opening is directed to the wedge rod 60 side. And the front-end | tip part 60a of the wedge stick 60 is inserted in the inside of the attenuation | damping cylinder 65 from the opened side, and it is set as the state embed | buried under the inside of the attenuation | damping material 66. FIG.

Examples of the damping material 66 include a soft damping material such as a lead plastic material and a high damping material composite material. Among them, a high damping material which is a material having both elasticity and damping (for example, a material having a hardness of 60 degrees or more and tan δ of 0.5 or more) is preferable.
Further, the wedge rod 60 is preferably harder than the damping material 66.

  In FIG. 5, of the four suspension bolts 3, the two suspension bolts 3 facing the left-right direction L <b> 1 across the equipment device W are illustrated, but the remaining two suspension bolts 3 are similarly illustrated. It is configured.

In the case of the vibration-proof suspended vibration-reducing structure 50 configured as described above, when the equipment device W and the suspension bolt 3 are relatively displaced in the left-right direction L1 and the front-rear direction L2 by vibration, the damping cylinder 65, the wedge rod 60, Therefore, the wedge rod 60 in which the tip end portion 60a is embedded in the damping material 66 moves inside the damping material 66 while receiving a resistance force. As a result, vibration energy can be attenuated and absorbed in the same manner, and the vibration load on the suspension bolt 3 can be reliably reduced and reduced. Therefore, the equipment device W can be stably suspended from the ceiling and protected.
Similarly, when the vibration is input, the wedge rod 60 and the damping cylinder 65 can be expected to act as a cushion, so that the peak value of the initial impact acceleration can be reduced, and the equipment W can be made effective from the impact force of the vibration. Easy to relax.

  Further, in the case of this vibration-proof suspended vibration-reducing structure 50, even if the tip 60a of the wedge rod 60 contacts the bottom of the damping cylinder 65 due to a large earthquake, for example, the dotted line state shown in FIG. Since the front end portion 60a of the wedge bar 60 is sharpened, it is easy to plastically deform the front end portion 60a so as to positively break the front end portion 60a. And it is possible to absorb vibration energy using this plastic deformation (crushable). Therefore, even if a large earthquake occurs, the vibration energy can be effectively consumed.

In the above-described anti-vibration suspension vibration-reduction structure 50, one wedge rod 60 can correspond to two suspension bolts 3, but four wedge rods 60 correspond to each suspension bolt 3. May be fixed to the top wall of the equipment W.
In addition, the attenuation cylinder 65 is fixed to the top wall surface of the equipment W so that the first engagement member 52 includes the attenuation cylinder 65, and the second engagement member 53 includes the wedge bar 60. The wedge rod 60 may be provided at one end of the second connecting bolt 43. Even in this case, the same effect can be obtained.

Second Embodiment
Next, a second example of the vibration-proof suspended vibration-reducing structure according to the present invention will be described with reference to the drawings. In the second example , the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In 1st Embodiment, although the 1st engagement member was provided in the installation equipment W and the 2nd engagement member was provided in the suspension bolt 3, in this example , a 1st engagement member and a 2nd engagement member are provided. Both are provided on the suspension bolt 3.

As shown in FIG. 8, the vibration-proof suspended vibration damping structure 70 of the second example is provided with a first engagement member 72 on any one of the four suspension bolts 3, and this first engagement member The second engagement member 73 that engages so as to be relatively movable while a predetermined resistance force is applied to the 72 is a vibration reducing member (vibrator) 71 provided on any of the remaining suspension bolts 3. It has.

The first engagement member 72 includes a wedge portion 75, and the second engagement member 73 includes an attenuation container 76 that embeds the wedge portion 75 in an attenuation material 77.
This will be described in detail.
The first engagement member 72 includes a first bolt 80 having one end connected to the suspension bolt 3 via a connection joint 41 provided in the middle of the suspension bolt 3, and the wedge portion 75 provided on one end side. The second bolt 81 is connected to the other end of the first bolt 80 and the other end of the second bolt 81.
The wedge portion 75 is an annular block body formed integrally with the second bolt 81, and the central portion of the wedge portion 75 is formed in a rhombus shape in cross-sectional view with the largest diameter. The connecting tool 82 is, for example, a turnbuckle, and connects the first bolt 80 and the second bolt 81 to each other with a predetermined tension.

The second engagement member 73 has a bolt 85 having one end connected to the suspension bolt 3 via a connection joint 41 provided in the middle of the suspension bolt 3 and the other end of which the damping container 76 is fixed. doing.
An attenuation material 77 is enclosed in the attenuation container 76, and an insertion hole 76a is formed in a part of the wall portion. The one end side of the second bolt 81 is inserted into the attenuation container 76 through the insertion hole 76 a, and the wedge portion 75 is embedded in the attenuation material 77.

Even in the case of the vibration-proof suspended vibration-reducing structure 70 configured as described above, vibration energy of vibration input from the outside can be consumed using the vibration reducing member 71.
Specifically, the plurality of suspension bolts 3 supporting the equipment device W from the ceiling are relatively displaced by vibration, but the suspension bolts 3 are connected to each other by the first engagement member 72 and the second engagement member 73. Therefore, the first engagement member 72 and the second engagement member 73 move relative to each other with the relative displacement. Accordingly, since the wedge portion 75 embedded in the damping material 77 moves inside the damping material 77 while receiving a resistance force, the vibration energy can be attenuated, absorbed and consumed using the resistance force. it can.
As a result, the vibration load on the suspension bolt 3 can be reliably reduced and reduced, and the equipment W can be stably suspended and protected.

Thus, even with the vibration-proof suspended vibration-reducing structure 70 according to the second example , the input vibration energy can be efficiently absorbed in a small space without requiring a large movable space. W can be stably suspended and supported for protection.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, although the equipment device W is suspended from the ceiling using the four suspension bolts 3, the number and arrangement of the suspension bolts 3 may be changed as appropriate according to the type and use of the equipment device W.
Further, the first engagement member and the second engagement member are not limited to the configuration described above. If the vibration energy accumulated in the suspension bolt can be consumed by the relative movement between the first engagement member and the second engagement member, it may be freely configured.

F ... Ceiling frame W ... Equipment 1, 50, 70 ... Anti-vibration suspended vibration reduction structure 2 ... Insert (fixture)
DESCRIPTION OF SYMBOLS 3 ... Suspension bolt 4 ... Connection piece 5 ... Connection tool 15, 51, 71 ... Vibration reduction member 20, 52, 72 ... 1st engagement member 22 ... Belleville spring 23 ... Disc body 30, 53, 73 ... 2nd connection Joint member 31 ... Ring plate 32 ... Ring body 60 ... Wedge stick (rod-like body)
65 ... Damping cylinder 66 ... Damping material

Claims (1)

A structure that supports the equipment on a ceiling,
A plurality of suspension bolts whose upper ends are screwed to a fixture provided on the ceiling frame, and a plurality of suspension bolts provided at the lower ends of the suspension bolts, and connected to a connection piece fixed to the equipment. And a vibration reducing member that consumes vibration energy of the input vibration and reduces a vibration load acting on the suspension bolt,
The vibration reduction member is provided on the first engagement member fixed to the equipment and the suspension bolt, and is engaged with the first engagement member so as to be relatively movable while a predetermined resistance is applied. A second engaging member,
The first engagement member has a disk body in which a pair of disc springs are overlapped with each other with their outer peripheral edges aligned with each other, and the second engagement member is formed of the disk body. An annular body having a pair of ring plates that sandwich the outer peripheral edge portion with a predetermined force from both sides in the vertical direction over the entire circumference, the plurality of suspension bolts being connected to the annular body, A vibration-proof suspended vibration-reducing structure characterized in that the vibration energy accumulated in the suspension bolt is consumed by relative movement of the joint member and the second engagement member.

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