JP4345117B2 - Seismic isolation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic isolation bearing device that segregates an upper structure so as to allow relative movement of the upper structure relative to the lower structure.
[0002]
[Problems to be solved by the invention]
For example, in buildings such as museums, museums, temples, precious artworks or antiques such as Buddha statues, sculptures, ceramics, etc. are placed on display stands or housed in display cases. If the table or the display case is placed directly on the floor of the building, there is a risk that the artwork will be destroyed and damaged due to a fall due to the occurrence of an earthquake.
[0003]
For this reason, the seismic isolation device described in Japanese Patent Publication No. 62-32300 is interposed between the display case and the floor of the building so that the vibration energy of the earthquake is appropriately transmitted without transmitting the vibration of the earthquake to the display case. It has been proposed to be used as a seismic isolation table to avoid damage and damage to artwork.
[0004]
The seismic isolation bearing device described in the above publication includes a lower pressure plate, an intermediate pressure plate disposed on the lower pressure plate, an upper pressure plate disposed on the intermediate pressure plate, and the intermediate pressure plate. A roller interposed between the lower pressure plate and the intermediate pressure plate and the upper pressure plate are supported on the lower pressure plate so as to be movable in one direction. It is supported on the intermediate pressure plate so as to be movable in the direction, and is provided with another roller interposed between the intermediate pressure plate and the upper pressure plate.
[0005]
By the way, it is preferable that art works or antiques are arranged as close as possible to the viewer so that they can be viewed in detail. Therefore, art works or antiques are supported by the above-mentioned seismic isolation device. There is often a risk that the display case containing the door will be inadvertently pushed by the viewer during the display. Due to this inadvertent act of the viewer, the display case may move and the viewer may be pinched, causing an unexpected accident.
[0006]
In addition, when transporting from the hangar or warehouse to the exhibition room or vice versa, the display case may move via the seismic isolation support device due to vibration during transport, and an unexpected accident may occur as described above. .
[0007]
The present invention has been made in view of the above-mentioned points, and its object is to provide a seismic isolation function in order to enhance safety and workability during the display or transportation of works of art or antiques. An object of the present invention is to provide a seismic isolation bearing device which can be released and can exhibit the seismic isolation function when necessary in the event of an earthquake.
[0008]
[Means for Solving the Problems]
The seismic isolation bearing device according to the first aspect of the present invention has a base, a movable body provided so as to be movable in a lateral direction with respect to the base, and a lateral mobility of the movable body with respect to the base. The blocking means includes an earthquake detecting means for detecting an earthquake, and the blocking means is arranged on the base so as to be immovable with respect to the moving direction of the movable body, and is movable so that one end is engaged with the movable body. A locking member, biasing means for biasing the locking member in a direction to release engagement of the one end of the locking member with the movable body, and one end of the locking member against energizing force of the biasing means in energization And an electric engagement holding means for holding the engagement, and the electric engagement holding means releases the energization to this or the earthquake detection signal from the earthquake detection means. Thus, the holding of the engagement of the one end of the lock member with the movable body is released. .
[0009]
According to the seismic isolation device of the first aspect, the movable lock member is arranged on the base so as to be stationary with respect to the movable direction of the movable body, and one end thereof is arranged to engage with the movable body. And an electric engagement holding means for holding the engagement by engaging one end of the member with the movable body, and the electric engagement holding means is locked by an energization release or an earthquake detection signal from the earthquake detection means. Since the holding of the engagement of the one end of the member with the movable body is released, the seismic isolation function is canceled during the exhibition or transportation of works of art or antiques, etc. Can exhibit seismic isolation function.
[0010]
Moreover, according to the seismic isolation bearing device of the first aspect, even when the energization is canceled, the electrical engagement holding means operates in the same manner as in the case of the earthquake detection signal from the earthquake detection means. The seismic isolation function can be exerted even when the power is turned off due to the earthquake, and when there is no viewer and the electrical engagement holding means is not normally energized, the seismic isolation function is used. The function can be exhibited, and thus a power saving, reliable and safe seismic isolation device can be provided.
[0011]
The seismic isolation bearing device according to the second aspect of the present invention is the seismic isolation bearing device according to the first aspect, wherein the urging means includes elastic means for generating an elastic force as the urging force.
[0012]
According to the seismic isolation bearing device of the second aspect, since the lock member can be forcibly moved by the elastic force of the elastic means, the seismic isolation function can be reliably and quickly released when necessary.
[0013]
In the seismic isolation bearing device according to the third aspect of the present invention, in the seismic isolation bearing device according to the second aspect, the elastic means includes a coil spring that generates an elastic force.
[0014]
The elastic means may be either an air (gas) spring or a mechanical spring including a coil spring and a leaf spring. However, the elastic means has a coil spring as in the seismic isolation bearing device of the third aspect. Then, it is possible to provide a seismic isolation bearing device having high reliability over a long period of time.
[0015]
In the seismic isolation bearing device according to the fourth aspect of the present invention, in any of the seismic isolation bearing devices according to the first aspect to the third aspect, the urging means generates a falling force as the urging force. The lock member itself is configured as a weight.
[0016]
According to the seismic isolation bearing device of the fourth aspect, the lock member is formed to be relatively heavy so as to be a weight, and the weight of the lock member as the weight is used as the biasing means. The elastic means can be omitted, the structure can be simplified, and the cost can be reduced.
[0017]
In the seismic isolation bearing device according to the fifth aspect of the present invention, in any of the seismic isolation bearing devices according to the first to fourth aspects, the movable body has a conical recess for receiving one end of the lock member. The means for holding and preventing includes other elastic means for elastically pressing and engaging one end of the lock member with the movable body.
[0018]
According to the seismic isolation bearing device of the fifth aspect, since the movable body has a conical recess for receiving one end of the lock member, it is movable in the lateral direction when the end of the lock member is engaged with the movable body. The movable body can be positioned at a predetermined position by the conical recess, and the one end of the lock member is elastically pressed against the movable body. You can get rid of things.
[0019]
In the seismic isolation bearing device according to the sixth aspect of the present invention, in any of the seismic isolation bearing devices according to the first aspect to the fifth aspect, the lock member integrally includes rack teeth on the other end side. The electric engagement holding means includes an electric motor, a pinion that meshes with the rack teeth and has a pinion shaft, an electromagnetic clutch interposed between the output rotation shaft and the pinion shaft of the electric motor, and an electric motor An electromagnetic brake that applies braking to the rotation of the output rotating shaft, and the electromagnetic clutch transmits the rotation of the output rotating shaft of the electric motor to the pinion when energized to the electrical engagement holding means. By connecting the output rotation shaft of the electric motor and the pinion shaft, the rotation of the output rotation shaft of the electric motor is prevented from being transmitted to the pinion by the release of energization to the electrical engagement holding means or the earthquake detection signal from the earthquake detection means. I will do it In addition, the output rotation shaft and the pinion shaft of the electric motor are disconnected, and the electromagnetic brake is electrically connected so as to hold the engagement of the one end of the lock member with the movable body when the electric engagement holding means is energized. The brake is applied to the output rotation shaft or the lock member of the motor, and the brake to the output rotation shaft or the lock member of the electric motor is released by the release of energization to the electrical engagement holding means or the earthquake detection signal from the earthquake detection means. It has become.
[0020]
In the seismic isolation bearing device according to the seventh aspect of the present invention, in any of the seismic isolation bearing devices according to the first aspect to the sixth aspect, the lock member is used for releasing the energization to the electrical engagement holding means, It is arranged on the base so that the end side protrudes downward from the lower surface of the base.
[0021]
According to the seismic isolation bearing device of the seventh aspect, in carrying in or taking out the seismic isolation bearing device from the warehouse, by pushing up the other end side of the lock member protruding downward from the lower surface of the base, Regardless of release of energization to the electrical engagement holding means, it is possible to easily engage the movable body at one end of the lock member, and to fix the movable body to the base during loading or unloading. Accidents during carrying out can be prevented.
[0022]
In the seismic isolation bearing device according to the eighth aspect of the present invention, in any of the seismic isolation bearing devices according to the first aspect to the seventh aspect, the movable body includes an intermediate movable frame disposed on the base, a base A first roller interposed between the base and the intermediate movable frame and moving the intermediate movable frame in one lateral direction with respect to the base; an upper movable frame disposed on the intermediate movable frame; A second roller interposed between the movable frame and the upper movable frame and configured to move the upper movable frame in another lateral direction perpendicular to the lateral direction, The roller is in rolling contact with a substantially arc-shaped concave surface formed on each of the surfaces of the base and the intermediate movable frame that face each other, and the second roller is formed between the intermediate movable frame and the upper movable frame. It is in rolling contact with a substantially arc-shaped concave surface formed on each of the facing surfaces, and the movable body has an intermediate movable frame with respect to the base in one lateral direction. And pendulum motion, as the upper movable frame is pendulum motion with respect to the intermediate movable frame in another one lateral is constituted.
[0023]
According to the seismic isolation bearing device of the eighth aspect, the movable body can be moved laterally relative to the base as a whole through the pendulum movement of the intermediate movable frame and the upper movable frame by the rolling motion of the roller on the concave surface. Therefore, it is possible to respond sensitively to earthquakes, and preferably to seismically support works of art, antiques, etc. or superstructures.
[0024]
In the seismic isolation bearing device according to the ninth aspect of the present invention, the seismic isolation bearing device according to any one of the first to eighth aspects is used as a seismic isolation table for exhibits.
[0025]
The seismic isolation bearing device of the present invention is adapted to cause the movable body to move relative to the lower structure in the lateral movement relative to the lower structure such as the ground. The bearing device is preferably used for a seismic isolation table for an exhibit like the seismic isolation bearing device of the ninth aspect of the present invention, but is not necessarily limited thereto, for example, a seismic isolation building for business use, It may be a seismic isolation housing, a seismic isolation detached house, etc. In this case, it is used to support the seismic isolation building, seismic isolation housing, seismic isolation detached housing, etc. .
[0026]
In the seismic isolation bearing device according to the tenth aspect of the present invention, in any of the seismic isolation bearing devices according to the first aspect to the ninth aspect, the energy absorbing device that absorbs the vibration energy in the lateral direction of the movable body with respect to the base. Is further provided.
[0027]
According to the seismic isolation bearing device of the tenth aspect, even if the movable body vibrates in the lateral direction due to the earthquake, this vibration energy is absorbed by the energy absorbing device, so that the lateral vibration of the movable body is rapidly attenuated. It is possible to avoid a situation where resonance occurs.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention and its embodiments will be described in more detail based on a preferred example of the embodiments shown in the drawings. The present invention is not limited to these examples.
[0029]
1 to 8, a base isolation table 1 as a base isolation support device of this example is an upper structure in which an exhibition room floor 2 as a lower structure and exhibits such as works of art or antiques are accommodated. The display case 3 is seismically isolated so as to allow the display case 3 to move relative to the floor 2 in the horizontal direction, that is, in the horizontal direction.
[0030]
The base isolation table 1 includes a base 5 placed on the floor 2, a movable body 6 on which the display case 3 is placed, a base 5, which is movable in the lateral direction with respect to the base 5, and a base Means 7 for obstructing the lateral movement of the movable body 6 with respect to 5, an earthquake sensing means 8 for sensing an earthquake, and an energy absorbing device 9 for absorbing vibration energy in the lateral direction of the movable body 6 with respect to the base 5. It has.
[0031]
The base 5 is fixed to a pair of X transverse members 11 and 12 and X transverse members 11 and 12 arranged in parallel to each other in the X direction, and a pair of Y transverse members 13 and 12 arranged in parallel to each other in the Y direction. 14, a base frame 15 having a square shape, a leg 16 with a height adjusting screw mechanism attached to the lower part of the four corners of the base frame 15, and the lower surfaces of the X transverse members 11 and 12 of the base frame 15 are bridged. A pair of catch pallet receiving members 17 and 18 that are extended in parallel with each other in the Y direction and supported by the base frame 15 and the upper surfaces of the X horizontal members 11 and 12 of the base frame 15 are bridged to each other in the Y direction. Between the pair of fixed rail members 19 and 20 supported by the base frame 15 and the catch pallet receiving members 17 and 18, the lower surfaces of the X transverse members 11 and 12 are bridged in the Y direction. Stretched and supported by the base frame 15 21, the case 22 attached almost at the center on the support plate 21, and the pair of fixed rail members 19 and 20, the upper surfaces of the X lateral members 11 and 12 of the base frame 15 are bridged to each other in the Y direction. And a pair of support plates 23 and 24 supported by the base frame 15.
[0032]
The movable body 6 is interposed between the intermediate movable frame 31 disposed on the base 5 and the base 5 and the intermediate movable frame 31, and is one lateral direction with respect to the base 5, in this example Y The intermediate movable frame 31 is interposed between the roller 32 for moving the intermediate movable frame 31 in the direction, the upper movable frame 33 disposed on the intermediate movable frame 31, and the intermediate movable frame 31 and the upper movable frame 33. And a roller 34 that allows the upper movable frame 33 to move in another horizontal direction orthogonal to the X direction in this example.
[0033]
The intermediate movable frame 31 faces a pair of fixed rail members 19 and 20 in the vertical direction and extends in parallel with each other in the Y direction, and a pair of lower intermediate movable rail members 41 and 42 and a pair of intermediate rails A pair of upper intermediate movable rail members 43 and 44 fixed to the upper surfaces of the movable rail members 41 and 42 and extending parallel to each other in the X direction, that is, intermediate movable members arranged in a cross-beam shape. Rail members 41 and 42 and intermediate movable rail members 43 and 44 are provided.
[0034]
The upper movable frame 33 faces the pair of intermediate movable rail members 43 and 44 in the up-down direction, and a pair of upper movable rail members 45 and 46 arranged in parallel with each other in the X direction, and the upper movable rail member 45. A pair of link members 47 and 48 arranged in parallel with each other in the Y direction, and a central side surface of the upper movable rail members 45 and 46 are arranged in a bridge. And an engaged member 52 having a conical recess 51 for receiving a distal end 50 of a lock member 49 described later. Note that insertion protrusions 53 are attached to the upper surfaces of both end portions of the upper movable rail members 45 and 46.
[0035]
The roller 32 is disposed at each of the four intersections of the pair of fixed rail members 19 and 20 of the base 5 and the pair of intermediate movable rail members 43 and 44 of the intermediate movable frame 31. The pair of intermediate movable rail members 41 and 42 of the intermediate movable frame 31 and the pair of upper movable rail members 45 and 46 of the upper movable frame 33 are arranged at four intersections, respectively. Since each intersection is configured in the same manner, the roller 32 and the same intersection 61 arranged at the intersection 61 between the fixed rail member 19 and the intermediate movable rail member 43 shown in FIGS. 6 and 7 will be described below. The roller 34 disposed at the intersection 61 between the intermediate movable rail member 41 and the upper movable rail member 45 will be described.
[0036]
The roller 32 disposed in the intersecting portion 61 has a substantially arcuate concave surface 67 formed by extending in the Y direction on the upper and lower surfaces 65 and 66 of the fixed rail member 19 and the intermediate movable rail member 41 facing each other. The roller 34, which is in contact with the roller 68 so as to roll in the Y direction, is disposed on the upper and lower surfaces 71 and 72 of the intermediate movable rail member 43 and the upper movable rail member 45 facing each other. The substantially arcuate concave surfaces 73 and 74 formed extending in the X direction are in contact with each other so as to roll in the X direction. The pair of rollers 34 disposed between the intermediate movable rail member 43 and the upper movable rail member 45 are synchronously rolled in the X direction, and similarly, the intermediate movable rail member 44 and the upper movable rail member. As shown in FIG. 1, the shafts of the respective rollers 34 are rotatably connected by link members 75 and 76 so that each of the pair of rollers 34 arranged between the rollers 46 is synchronously rolled in the X direction. May be. Although not shown, the roller 32 may similarly be rotatably connected by a link member.
[0037]
As a result of the roller 32 coming into contact with the concave surfaces 67 and 68 so as to roll in the Y direction and the roller 34 coming into contact with the concave surfaces 73 and 74 so as to roll in the X direction, it is movable in the lateral vibration of the base 5 due to the earthquake. The body 6 is configured such that the intermediate movable frame 31 performs a pendulum movement with respect to the base 5 in the Y direction, and the movable frame 33 further performs a pendulum movement with respect to the intermediate movable frame 31 in the X direction.
[0038]
The blocking means 7 is fixed on the base 5 in the movable direction of the movable body 6, that is, in the X and Y directions, and is movable in the vertical direction V so that the one end 50 is engaged with the movable body 6. The lock member 49, the urging means 81 for urging the lock member 49 in the direction of releasing the engagement of the one end 50 of the lock member 49 with the movable body 6, that is, the downward direction D, and the one end 50 of the lock member 49 are movable. In the energization, the elastic member 82 is elastically pressed against the body 6 and the one end 50 of the lock member 49 is engaged with the movable body 6 against the urging force of the urging member 81. And electrical engagement holding means 83 for holding.
[0039]
The lock member 49 includes a cylindrical member main body 93 integrally having a spring receiving flange 91 on the outer peripheral surface of the intermediate portion and rack teeth 92 on one surface of the outer peripheral surface on the other end side, and a member main body 93. And a lock pin 95 having one end 50 inserted into a recess 94 drilled in the upper end surface of the member main body 93 so as to be movable in the vertical direction V. Is supported movably in the vertical direction V on the case 22 via sliding bearings 96 and 97. Further, the lock member 49 has a case in which the other end side of the member main body 93 protrudes downward from the lower surface of the support plate 21 of the base 5 when energization of the electrical engagement holding means 83 is released. 22 is arranged. The member main body 93 integrally has a flange portion 100 that abuts against the upper end wall 99 of the case 22 so that the member main body 93 does not fall out of the case 22 and fall, and the lock pin 95 does not come out of the recess 94. As described above, the lower end portion thereof integrally has a flange portion 102 that comes into contact with the annular step portion 101 of the member main body 93 in the recess 94.
[0040]
The urging means 81 includes a coil spring 110 as an elastic means for generating an elastic force as an urging force. The coil spring 110 surrounds the member main body 93 and is formed between the upper end wall 99 of the case 22 and the flange portion 91. The member main body 93 of the lock member 49 is urged downward D in the vertical direction V by the elastic force.
[0041]
The urging means 82 includes a coil spring 111 as an elastic means for generating an elastic force as an urging force, and the coil spring 111 is disposed between the bottom of the recess 94 and the lower end surface of the lock pin 95. The lock pin 95 is urged upward U in the vertical direction V by the elastic force.
[0042]
The electrical engagement holding means 83 includes an electric motor 121 mounted on the support plate 21, a pinion 122 that is rotatably supported by the case 22, meshes with the rack teeth 92, and has a pinion shaft 124, and an electric motor Based on the electromagnetic clutch 125 interposed between the output rotation shaft 121 and the pinion shaft 124, the electromagnetic brake 126 for braking the rotation of the output rotation shaft of the electric motor 121, and the earthquake detection signal from the earthquake detection means 8. And a control means 127 for electrically controlling the electric motor 121, the electromagnetic clutch 125, and the electromagnetic brake 126.
[0043]
The output rotation shaft of the electromagnetic clutch 125 and the pinion shaft 124 are connected via a coupling 128, and the rotation of the output rotation shaft of the electric motor 121 is transmitted via the electromagnetic clutch 125, the coupling 128 and the pinion shaft 124. It is transmitted to the pinion 122.
[0044]
The electromagnetic clutch 125 outputs the output of the electric motor 121 so that the rotation of the output rotation shaft of the electric motor 121 is transmitted to the pinion shaft 122 under the control of the control unit 127 when the electric engagement holding unit 83 is energized. The rotation shaft and the pinion shaft 124 are connected, and the electrical engagement holding means 83 is deenergized, that is, the electromagnetic clutch 125 is deenergized or the electrical engagement holding means 83 is energized. By the control of the control means 127 based on the earthquake detection signal, the output rotation shaft of the electric motor 121 and the pinion shaft 124 are disconnected so as to prevent the rotation of the output rotation shaft of the electric motor 121 from being transmitted to the pinion 122. . The electromagnetic clutch 125 is used when the power supply outlet 131 to the electrical engagement holding means 83 is disconnected from the power supply line or when the power supply line itself is not supplied with power (in the case of a power failure). The built-in mechanical elastic means forcibly and automatically disconnects the output rotation shaft of the electric motor 121 and the pinion shaft 124.
[0045]
The electromagnetic brake 126 holds this engagement after the engagement of the one end 50 of the lock member 49 with the recess 51 of the movable body 6 under the control of the control means 127 when the electric engagement holding means 83 is energized. As described above, braking is applied to the output rotation shaft of the electric motor 121. In the same way as the electromagnetic clutch 125, when the control means 127 receives the earthquake detection signal from the earthquake detection means 8, the electromagnetic brake 126 is applied to the output rotation shaft of the electric motor 121 under the control of the control means 127. Built-in mechanical elasticity even when the brake is released or when the outlet 131 is disconnected from the power supply line or when the power supply line itself is not supplied with power (in the case of a power failure). By means, the braking to the output rotation shaft of the electric motor 121 may be automatically and forcibly released. In this way, the electromagnetic brake 126 also releases the braking. Can be fail-safe against earthquakes. Further, the electromagnetic brake 126 may apply braking to the lock member 49 instead of applying braking to the output rotation shaft of the electric motor 121.
[0046]
The control means 127 operates the electromagnetic clutch 125 when the outlet 131 is connected to the power supply line or after the connection, and a lock operation switch (not shown) is pressed to rotate the output rotation shaft of the electric motor 121. Is transmitted to the pinion 122, and then the electric motor 121 is operated so that the lock member 49 is moved in the upward direction U. With this movement, the engagement in the recess 51 of the one end 50 of the lock pin 95 is performed. In contact with the combined member 52, the operation of the electric motor 121 is stopped by a signal from a detector (not shown) that detects this, while the electromagnetic brake 126 is operated to output the output rotation shaft of the electric motor 121. To be braked. Further, the control means 127 is configured to detect the earthquake when the earthquake occurs in a state where the one end 50 of the lock pin 95 is in contact with the engaged member 52 and the output rotation shaft of the electric motor 121 is braked. 8, the operation of the electromagnetic clutch 125 and the electromagnetic brake 126 is released so that the lock member 49 can move in the downward direction D by the elastic force of the coil spring 110. When the outlet 131 is disconnected from the power supply line or a power failure occurs, the control unit 127 cannot perform the above control as a result of the supply of power to the outlet 131 being lost.
[0047]
As described above, the electrical engagement holding means 83 causes the lock member 49 to be engaged with the movable body 6 by supplying electric power thereto, and the energization release to this or the earthquake detection signal from the earthquake detection means, The locking of the lock member 49 is released so that the lock member 49 can be moved downward by being biased by the biasing force of the biasing means 81.
[0048]
Due to the engagement of the lock member 49 with the movable body 6, the movable body 6 is fixed to the base 5 in the lateral direction, whereby the base isolation table 1 can no longer exhibit the base isolation function. By releasing the engagement with the movable body 6, the movable body 6 becomes movable with respect to the base 5 in the lateral direction, whereby the base isolation table 1 can exhibit the base isolation function.
[0049]
The earthquake sensing means 8 is attached to any one of the floor 2, the base 5, or the movable body 6 so as to electrically detect acceleration caused by the earthquake.
[0050]
The energy absorbing device 9 includes a Y-direction energy absorbing device 141 provided between the base 5 and the intermediate movable frame 31, and an X-direction energy absorbing device provided between the intermediate movable frame 31 and the upper movable frame 33. 142.
[0051]
The Y-direction energy absorbing device 141 includes a Y-direction energy absorbing device 143 provided between the support plate 23 and the intermediate movable rail member 41, the support plate 24, and the intermediate between the base 5 and the intermediate movable frame 31. The Y-direction energy absorbing device 144 is provided between the movable rail member 42 and the Y-direction energy absorbing device 144. The Y-direction energy absorbing device 144 will be described below. Are denoted by the same reference numerals as necessary, and description thereof is omitted.
[0052]
As shown in FIG. 8 in particular, the Y-direction energy absorbing device 143 includes a container 151 that extends in the Y direction and is fixed on the support plate 23, and is disposed in the container 151 with a small gap from the container 151. A resistance plate 152 fixed to the movable rail member 41 and a viscous body 153 filled in the container 151 are provided, and when the intermediate movable rail member 41 is moved in the Y direction with respect to the support plate 23. The viscous body 153 is sheared by the resistance plate 152, and the vibration energy in the Y direction of the intermediate movable rail member 41 is absorbed by the viscous shear resistance generated in the resistance plate 152 in this shearing.
[0053]
The X-direction energy absorption device 142 includes an X-direction energy absorption device 161 provided between the intermediate movable rail members 41 and 42 and the upper movable rail member 45 between the intermediate movable frame 31 and the upper movable frame 33. Since the X-direction energy absorbing device 162 is provided between the intermediate movable rail members 41 and 42 and the upper movable rail member 46 and these are formed in the same manner, the X-direction energy absorbing device 161 will be described below. The X-direction energy absorbing device 162 is illustrated with the same reference numerals as necessary, and the description thereof is omitted.
[0054]
The X-direction energy absorbing device 161 is configured in substantially the same manner as the Y-direction energy absorbing device 143. In particular, as shown in FIG. 8, the X-direction energy absorbing device 161 extends in the X direction and bridges the intermediate movable rail members 41 and 42. A container 171 having both ends fixed to the intermediate movable rail members 41 and 42, a resistance plate 172 disposed in the container 171 with a small clearance from the container 171 and fixed to the upper movable rail member 45, and the container 171 And the viscous body 173 is sheared by the resistance plate 172 when the upper movable rail member 45 is moved in the X direction with respect to the intermediate movable rail members 41 and 42. In this shearing, the vibration energy in the X direction of the upper movable rail member 45 is absorbed by the viscous shearing resistance generated in the resistance plate 172.
[0055]
The display case 3 is positioned on the insertion protrusion 53 and is placed on the upper movable rail member 45.
[0056]
In the base isolation table 1 described above, the seismic isolation function can be canceled during the display of works of art or antiques. Moreover, even when power is released, the movable body is the same as in the case of the earthquake detection signal from the earthquake detection means 8. Since the electrical engagement / holding means 83 operates so that the lateral mobility of 6 is restored, the seismic isolation function can be exhibited even when the energization is canceled due to an earthquake, and there is no viewer. In addition, the seismic isolation function can be exhibited in an earthquake when the electrical engagement and holding means 83 is stored in a warehouse or the like that normally does not energize.
[0057]
In addition, when the outlet 131 is disconnected from the power supply line and the seismic isolation table 1 is transferred from the warehouse to the exhibition room or from the exhibition room to the warehouse, a catch pallet is disposed under the support plate 21. Thus, the other end side of the lock member 49 protruding downward from the lower surface of the support plate 21 of the base 5 can be moved upward U so that the lock member 49 can be engaged with the movable body 6. This can temporarily stop the seismic isolation function of the base isolation table 1, and prevent the fall of artworks, antiques, etc. due to the fall of the base isolation table 1 during loading and unloading or the roll of the display case 3.
[0058]
【The invention's effect】
According to the present invention, the seismic isolation function is canceled in order to improve safety and workability during the exhibition or transportation of works of art or antiques, etc. Can be provided.
[Brief description of the drawings]
FIG. 1 is a plan view of a preferred embodiment of the present invention.
2 is a partial front sectional view of the example shown in FIG. 1. FIG.
FIG. 3 is a partial cross-sectional view of the right side of the example shown in FIG.
FIG. 4 is a partially enlarged explanatory view of the example shown in FIG. 1;
FIG. 5 is an explanatory diagram of the electrical engagement holding means of the example shown in FIG.
6 is a partially enlarged explanatory view of the front shown in FIG. 2. FIG.
7 is a partially enlarged explanatory view of a side surface shown in FIG. 3;
8 is a cross-sectional view of the energy absorbing device shown in FIG.
[Explanation of symbols]
1 Base isolation table
5 bases
6 Movable body
7 Means to prevent
8 Earthquake detection means
49 Locking member
81 Energizing means
82 Elastic means
83 Electrical engagement holding means

Claims (8)

  A seismic isolation device used as a seismic isolation table for exhibits, including a base, a movable body movable in a lateral direction relative to the base, and a lateral direction of the movable body relative to the base Means for preventing movement and earthquake detecting means for detecting an earthquake are provided, and the means for preventing is arranged so as to be immovable on the base with respect to the moving direction of the movable body, and one end is engaged with the movable body. A movable locking member arranged, biasing means for biasing the locking member in a direction to release engagement of one end of the locking member with the movable body, and energization against the biasing force of the biasing means in energization An electric engagement holding means for engaging one end of the lock member with the movable body and holding this engagement is provided. The engagement of the one end of the lock member with the movable body is released by the earthquake detection signal The base includes a base frame and a support plate supported by the base frame, and the lock member is supported on the other end side when the electrical connection to the electrical engagement holding means is released. In the base so that it protrudes downward from the lower surface of the plate and the other end side of the protrusion is moved upward by the arrangement of the catch pallet below the support plate, and the movable body is engaged at one end. A seismic isolation device.   The seismic isolation bearing device according to claim 1, wherein the urging means includes elastic means for generating an elastic force as the urging force.   The seismic isolation bearing device according to claim 2, wherein the elastic means includes a coil spring that generates an elastic force.   The seismic isolation bearing device according to any one of claims 1 to 3, wherein the urging means includes a lock member itself configured as a weight so as to generate a falling force as the urging force.   The movable body has a conical recess for receiving one end of the locking member, and the blocking means comprises other elastic means for elastically pressing and engaging one end of the locking member against the movable body. The seismic isolation bearing device according to any one of claims 1 to 4.   The lock member is integrally provided with rack teeth on the other end side, and the electrical engagement and holding means meshes with the electric motor, the rack teeth, and has a pinion having a pinion shaft, and the output rotation of the electric motor. An electromagnetic clutch interposed between the shaft and the pinion shaft, and an electromagnetic brake for braking the rotation of the output rotation shaft of the electric motor. The electromagnetic clutch is used for energizing the electrical engagement holding means. The output rotation shaft of the electric motor and the pinion shaft are connected so that the rotation of the output rotation shaft of the electric motor is transmitted to the pinion, the energization release to the electrical engagement holding means or the earthquake detection from the earthquake detection means The output rotation shaft of the electric motor and the pinion shaft are disconnected from each other so that the rotation of the output rotation shaft of the electric motor is prevented from being transmitted to the pinion by the signal, and the electromagnetic brake is connected to the electrical engagement holding means. In electricity, the output rotation shaft of the electric motor or the lock member is braked so as to keep the engagement of the one end of the lock member with the movable body, the energization release from the electrical engagement holding means or the earthquake sensing means The seismic isolation bearing device according to any one of claims 1 to 5, wherein braking to the output rotation shaft of the electric motor or the lock member is released by an earthquake detection signal.   The movable body is an intermediate movable frame disposed on the base, and is interposed between the base and the intermediate movable frame, and makes the intermediate movable frame movable in one lateral direction with respect to the base. A roller, an upper movable frame disposed on the intermediate movable frame, and an intermediate frame between the intermediate movable frame and the upper movable frame, and the other upper horizontal movable frame orthogonal to the one horizontal direction. The first roller is in rolling contact with a substantially arcuate concave surface formed on each of the surfaces of the base and the intermediate movable frame facing each other. The second roller is in rolling contact with a substantially arc-shaped concave surface formed on each of the surfaces of the intermediate movable frame and the upper movable frame facing each other, and the movable body has a single horizontal movable frame. So that the pendulum moves with respect to the base in the direction and the movable frame moves with respect to the intermediate movable frame in the other lateral direction. Seismic isolation bearing device according to any one of claims 1, which is made 6.   The seismic isolation bearing device according to any one of claims 1 to 7, further comprising an energy absorbing device that absorbs vibration energy in a lateral direction of the movable body with respect to the base.

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