US20060048462A1

US20060048462A1 - Aseismatic support platform

Info

Publication number: US20060048462A1
Application number: US11/186,873
Authority: US
Inventors: Chih-Hung Huang; Sen-Nan Lee; Kuo-Chun Chang
Original assignee: National Center for Res on Earthquake Engr; VIO Creation Tech Inc
Current assignee: National Center for Res on Earthquake Engr; VIO Creation Tech Inc
Priority date: 2004-09-03
Filing date: 2005-07-22
Publication date: 2006-03-09
Also published as: JP2006071086A; TW200609439A; TWI243879B; JP4195691B2

Abstract

The present invention relates to an aseismatic support unit, and more particularly to an aseismatic support unit capable of being easily and fitly in-situ assembled to become an aseismatic system. The aseismatic support unit is mounted between a base and a loaded article, comprising a lower support member, an upper support member and a plurality of aseismatic units mounted therebetween. Each of the aseismatic units includes a lower carry member having an upward carry surface, an upper carry member having a downward carry surface and a support roller mounted therebetween. When an earthquake happens, shakes are transmitted from the base. Then, the aseismatic support unit of the present invention diminishes the extent of the shakes of the load article placed over the upper support member and thus prevent the loaded article from overturn and damage as a result of the earthquake.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to an aseismatic support unit, and more particularly to an aseismatic support unit capable of being easily and fitly in-situ assembled to become an aseismatic system.
2. Description of Related Art
Earthquake disasters occur frequently around the world, causing tremendous personal injuries and death as well as serious loss of property that cannot be recovered. Nowadays, the industrial and commercial communities rely heavily on exchange of a great deal of data to perform various industrial and commercial activities either by computer networks or common telecommunication exchanges. In addition, the infrastructure system for supplying water, electricity, gas and transportation to meet the basic needs for the society functions also relies heavily on data by means of the computer networks or the common telecommunication exchanges to maintain their operations. Thus, an earthquake causes not only inconveniences to our lives as a result of damages to civil constructions such as buildings and bridges, but also abruptly ceases the activities of the whole society as a result of damages to the computer networks or the common telecommunication exchanges. Hence, developments of various aseismatic systems have gradually attracted the attention of responsible personnel. Industry has kept investing enormous amounts of capital and human resources in research in the hope of reducing damage to equipment, facilities etc, such as computer network servers, telecommunication exchanges, buildings or bridges necessary for maintaining the basic operations of the society and so minimize the influences of the earthquake disasters on our lives.
Aseismatic systems currently available from the market are formed independently of the equipment such as the aforesaid computer network server or the telecommunication exchange to be protected, instead of being integral with the equipment being protected. Hence, the aseismatic systems are generally assembled on the construction site where the equipment to be protected is mounted, for example, the telecommunication exchange room or the computer room. However, any of these places (e.g., the computer room) is limited in space due to being full of other machines (servers). Thus, difficulty of in-situ installation of the aseismatic system increases, and also, time for such installation is prolonged. Furthermore, because the aseismatic systems currently available are excessively large, the in-situ installation will generally have drawbacks in the normal operation of the equipment to be protected; for example, the equipment needs to be powered off for wire reconnections. Therefore, the clients will worry about these drawbacks and hesitate to install the aseismatic system. Consequently, the main target of the researches for the aseismatic systems in the industry is to reduce the size of the presently existing aseismatic systems and simplify the process for installing the aseismatic system.
A construction unit 10 for forming a conventional aseismatic system is shown in FIG. 1 a, having a lower support member 11, an upper support member 12 and two aseismatic units 13 respectively consisting of an upper carry member 14, a lower carry member 15 and a support roller 16, in which a downward carry surface 141 is of a V shape in section, facing downward, and two flanges 142 on the both sides thereof are mounted on the bottom of the upper carry member 14 while an upward carry surface 151 is of a V shape in section and two flanges 152 on the both sides thereof are mounted on the top of the lower carry member 15. In addition, the support roller 16 contacts with the downward carry surface 141 of the upper carry member 14 and the upward carry surface 151 of the lower carry member 15. As shown in FIG. 1 b, a conventional aseismatic system 17 formed by welding a plurality of links 18 to two construction units 10 as shown in FIG. 1 a is pre-fabricated according to the size of the base area of equipment (a computer network server or a telecommunication exchange) to be protected. Then, the whole aseismatic system 17 is carried to the construction site on which it is installed beneath the equipment (computer network server or telecommunication exchange) to be protected.
When the conventional aseismatic system 17 and the equipment being protected by the system 17 shake as a result of an earthquake, the equipment (computer network server or telecommunication exchange) to be protected and the two construction units 10 of the aseismatic system 17 will swing back and forth due to the inertial actions. At the same time, the support roller 16 of the construction unit 10 rolls back and forth between the downward carry surface 141 and the upward carry surface 151 to gradually retard the swing of the equipment (computer network server or telecommunication exchange) being protected. However, as mentioned in the above, because both the downward carry surface 141 V-shaped in section, facing downward, and the upward carry surface 151 V-shaped in section, as provided in the construction unit 10 are irregular, the support roller 16 keeps hitting against the irregular downward carry surface 141 V-shaped in section, facing downward, or the irregular upward carry surface 151 V-shaped in section when the support roller 16 rolls back and forth between the downward carry surface 141 and the upward carry surface 151, resulting in an obstructed rolling of the support roller 16 between the downward carry surface 141 and the upward carry surface 151. In addition, the strokes will bring about very noisy sound, and also, chances of overturning the equipment being protected increase.
Moreover, the construction unit 10 of the conventional aseismatic system 17 relies merely on the flanges 142 disposed on the edges of the downward carry surface 141 and the flanges 152 disposed on the edges of the upward carry surface 151 to define the rolling range of the support roller 16. Thus, when the support roller 16 rolls rapidly (when a major earthquake happens), the support roller 16 of the conventional aseismatic system 17 is very likely to roll out of the predetermined rolling range and finally rests on somewhere between the flanges 142 and 152 in an inclined manner. Then, the aseismatic system 17 will not operate normally and the equipment mounted above and supposedly being protected by the aseismatic system 17 will overturn.
In addition, as stated in the above, the conventional aseismatic system 17 is composed of two construction units 10 and the links 18 by welding in the factory in advance. Thus, the assembled conventional aseismatic system 17 will be noticeably oversized and heavy to a certain extent. As a result, the conventional aseismatic system 17 has difficulties in transportation thereof and complex installing procedures so that the time for the installation will be prolonged. Furthermore, because the peripheries of the conventional aseismatic system 17 are all welded, the wires for connecting the equipment to be protected to external devices must be pulled out for proceeding with the installation of the aseismatic system 17 and reconnected for resuming the power after the installation of the conventional aseismatic system 17 is completed. Therefore, services such as computer network services will be interrupted due to the installation of the conventional aseismatic system 17, causing an inconvenience to the clients and the public.
Accordingly, there is a dire need for the industry to have an aseismatic system which can be easily and fitly in-situ assembled for equipment to be protected without discontinuing the operation of the equipment.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an aseismatic support unit so as to be easily and fitly in-situ assembled for an equipment to be protected without discontinuing the operation of the equipment.
Another object of the present invention is to provide an aseismatic support unit so as to reduce the possibility of toppling over equipment to be protected and increase the quakeproof function of the aseismatic system.
To attain the aforesaid object, an aseismatic support unit according to the present invention is mounted between a base and a loaded article, comprising a lower support member, an upper support member and a plurality of aseismatic units mounted between the lower support member and the upper support member. Each of the aseismatic units includes a lower carry member having an upward carry surface, an upper carry member having a downward carry surface and a support roller mounted between the downward carry surface and the upward carry surface, in which at least one ring element projects from a side face of the support roller in a perpendicular manner, the side face contacting with the downward carry surface and the upward carry surface.
To attain the aforesaid object, an aseismatic support unit according to the present invention is mounted between a base and a loaded article, comprising a lower support member, an upper support member and a plurality of aseismatic units mounted between the lower support member and the upper support member. Each of the aseismatic units mounted between the lower support member and the upper support member includes a lower carry member having an upward carry surface, an upper carry member having a downward carry surface, an intermediate board which has an upper support surface and a lower support surface on the top and bottom thereof respectively and is mounted between the lower carry member and the upper carry member, a first support roller mounted between the lower carry member and the intermediate board, and a second support roller mounted between the upper carry member and the intermediate board, in which at least one first ring element projects from a first side face of the first support roller in a perpendicular manner while at least one second ring element projects from a second face of the second support roller in a perpendicular manner so that the first side face contacts with the upward carry surface of the lower carry member and the lower support surface of the intermediate board and that the second side face contacts with the downward carry surface of the upper carry member and the upper support surface of the intermediate board.
Accordingly, an aseismatic support unit according to the present invention is capable of damping shakes transmitting from ground to equipment (such as a computer network server) to be protected and reducing the possibility of damage to the equipment as a result of overturn of the equipment. In addition, an aseismatic support unit according to the present invention is not only simply constructed but also designed in module to occupy a small amount of space. Hence, a plurality of the aseismatic support units according to the present invention can be easily and fitly in-situ assembled to become an aseismatic system without disrupting the normal operation of the equipment to be protected. Further, because the upward carry surface, the downward carry surface and the support roller of the respective aseismatic support units according to the present invention are specifically designed, an aseismatic system so assembled can reduce the possibility of toppling over the equipment to be protected and increase the quakeproof function of the whole aseismatic system.
The profile of the upward carry surface, viewed along a rolling direction of the support roller, is not specifically defined; and preferably is a line, or more preferably is a smooth curve having an upward opening, and most preferably is a U-shaped curve. The profile of the downward carry surface, viewed along a rolling direction of the support roller, is not specifically defined; and preferably is a line, or more preferably is a smooth curve having a downward opening, and most preferably is a U-shaped curve, facing downward. The profile of the lower support surface, viewed along a rolling direction of the support roller, is not specifically defined; and preferably is a smooth curve having a downward opening, or more preferably is a U-shaped curve, facing downward. The profile of the upper support surface, viewed along a rolling direction of the support roller, is not specifically defined; and preferably is a smooth curve having an upward opening, or more preferably is a U-shaped curve. The frictional coefficient distributed on the upward carry surface, the downward carry surface, the lower support surface and the upper support surface of the present invention is not specifically defined. Preferably, the frictional coefficient at each center surface is lower than that at each marginal edge; and more preferably, the frictional coefficient is gradually increased in a proportional manner from each center surface to each marginal edge. The aseismatic support units according to the present invention are arranged without a particular limitation. Preferably, two aseismatic support units are assembled by means of a plurality of links to form an aseismatic system. The assembly of the plurality of links of the present invention to an aseismatic support unit according to the present invention is not specifically defined, and preferably is by welding; or more preferably is by bolting. The ring element projecting from the support roller of the present invention is positioned without a particular limitation, and preferably is at the end of the support roller. The ring element is not specifically defined in number, and preferably is one ring element, or more preferably is two ring elements. The support roller of the present invention is constructed without a particular limitation. Preferably, the support roller is constructed by a solid cylinder, or more preferably, a cylindrical shell enclosing a plurality of solid spheres. The aseismatic support unit of the present invention reduces shakes in the vertical direction without a particular limitation; and preferably by means of a soft pad disposed between the upper support member and the loaded article, or more preferably, by means of a damper for connecting the upper support member to the lower support member to absorb shakes in the vertical direction. The damper of the present invention is positioned without a particular limitation, and preferably is between the upper support member and the lower support member in an oblique manner. The damper of the present invention is not specifically defined; and preferably is a spring, or more preferably is a pneumatic damper; and most preferably is a hydraulic damper.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 a is an exploded view of a construction unit of a conventional aseismatic system.
FIG. 1 b is a schematic view of a conventional aseismatic system.
FIG. 2 a is an exploded view of an aseismatic support unit according to a preferred embodiment of the present invention.
FIG. 2 b is a perspective view of the aseismatic support unit of FIG. 2 a.
FIG. 3 a is an exploded view of an aseismatic support unit according to another preferred embodiment of the present invention.
FIG. 3 b is a perspective view of the aseismatic support unit of FIG. 3 a.
FIG. 3 c is a cross-sectional view taken along A-A′ line of the aseismatic support unit of FIG. 3 b.
FIGS. 4 a, 4 b and 4 c are schematic views illustrating modifications of the structure of a support roller according to the present invention.
FIG. 5 is a cross-sectional view of another preferred embodiment according to the present invention, in which a decelerator is used to damp both rolling of a support roller and shakes of equipment to be protected.
FIG. 6 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a computer network server.
FIG. 7 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a building.
FIG. 8 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a bridge.
FIG. 9 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a virtual reality simulation system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 2 a and 2 b, an aseismatic unit 20 according to a preferred embodiment of the present invention is constituted by a lower support member 21, an upper support member 22 and two aseismatic units 23 each of which includes a lower carry member 25 having an upward carry surface 24, an upper carry member 27 having a downward carry surface 26 and a support roller 28 disposed between the lower carry member 25 and the upper carry member 27. The support roller 28 has a side face 281 in contact with the upward carry surface 24, the downward carry surface 26 and two ring elements 282 projecting from two ends of the side face 281 respectively to pre-define the rolling range of the support roller 28. In addition, the profile of the downward carry surface 26, viewed along a rolling direction of the support roller 28, is a U-shaped curve, facing downward, while the profile of the upward carry surface 24, viewed along a rolling direction of the support roller 28, is a U-shaped curve. The two ring elements 282 project from two ends of the side face 281 of the support roller 28 respectively. Hence, when a shake happens, the support roller 28 of the aseismatic support unit 20 of the present invention rolls smoothly within the rolling range prescribed by the two ring elements 282 and gradually slows down to a stop, as opposed to the irregular and very noisy rolling back and forth of the conventional support roller which may even escape from the predetermined rolling range and finally come to rest in an inclined manner. Thus, the aseismatic support unit 20 of the present invention is capable of achieving the object of preventing equipment to be protected from overturn and damage.
Referring next to FIGS. 3 a, 3 b and 3 c, in which an exploded view of an aseismatic support unit according to another preferred embodiment of the present invention is shown in FIG. 3 a, a perspective view of the aseismatic support unit of FIG. 3 a is shown in FIG. 3 b, and a cross-sectional view taken along A-A′ line of the aseismatic support unit of FIG. 3 b is shown in FIG. 3 c.
As shown in FIG. 3 a, an aseismatic support unit 30 according to a preferred embodiment of the present invention is constituted by a lower support member 31, an upper support member 32 and two aseismatic units 33 each of which includes a lower carry member 34 having an upward carry surface 341, an upper carry member 35 having a downward carry surface 351, an intermediate board 36 mounted between the lower carry member 34 and the upper carry member 35, a first support roller 37 mounted between the lower carry member 34 and the intermediate board 36, and a second support roller 38 mounted between the upper carry member 35 and the intermediate board 36. The intermediate board 36 has an upper support surface 361 and a lower support surface 362. The first support roller 37 has an upward carry surface 341 and a side face 371 in contact with the lower support surface 362, and two ring elements 372 projecting from two ends of the side face 371. The second support roller 38 has a downward carry surface 351 and a side face 381 in contact with the upper support surface 361, two ring elements 382 projecting from two ends of the side face 381.
As shown in. FIGS. 3 a and 3 c, because the profiles of the upward carry surface 341 and the lower support surface 362, viewed along a rolling direction of the first support roller 37, are a smooth U-shaped curve and a smooth U-shaped curve, facing downward, respectively, and the two ring elements 372 project from two ends of the side face 371 of the first support roller 37, the first support roller 37 will smoothly roll back and forth along with shakes caused by an earthquake. Similarly, because the profiles of the downward carry surface 351 and the upper support surface 361, viewed along a rolling direction of the second support roller 38, are a smooth U-shaped curve, facing downward, and a smooth U-shaped curve, respectively, and two ring elements 382 project from two ends of the side face 381 of the second support roller 38, the second support roller 38 will smoothly roll back and forth within the predetermined rolling range along with shakes caused by the earthquake. Hence, when shakes caused by the earthquake occur, the first support roller 37 and the second support roller 38 of the aseismatic support unit 30 of the present invention roll back and forth within the rolling ranges prescribed by the ring elements 372 and 382 respectively in a smooth manner and gradually slow down to a stop, as opposed to the irregular and very noisy rolling back and forth between the upper carry member and the lower carry member of the conventional support rollers, which may even escape from the predetermined rolling range and finally set aside in an inclined manner, in the conventional aseismatic system. Thus, the aseismatic support unit 30 of the present invention is also capable of achieving the object of preventing equipment to be protected from overturn and damage.
FIGS. 4 a, 4 b and 4 c are schematic views illustrating modifications of the structure of a support roller according to the present invention. As shown in FIG. 4 a, a support roller 41 has two projecting ring elements 411 in positions respectively spaced apart from the support roller 41, other than at two ends of the support roller. On the other hand, as shown in FIG. 4 b, a support roller 42 has only a ring element 421 positioned at the center of the support roller 42. Thus, both the number and the position of the ring element projecting from the support roller of the present invention are not specifically defined so long as the rolling range of the support roller can be predetermined. In addition, as shown in FIG. 4 c, a support roller 43 is constituted by a cylindrical shell enclosing a plurality of solid spheres 433, including two ring elements 431 projecting from two ends of the support roller 43. The support roller of the present invention does not have to be solid, and can be a cylindrical shell enclosing said plurality of solid spheres, to save materials and manufacturing costs.
FIG. 5 is a cross-sectional view of another preferred embodiment according to the present invention, in which a decelerator is used to damp both rolling of a support roller and shakes of equipment to be protected. An aseismatic support unit 50 according to a preferred embodiment of the present invention is constituted by a lower support member 51, an upper support member 52 and an aseismatic unit which includes a lower carry member 54 having an upward carry surface 541, an upper carry member 55 having a downward carry surface 551, an intermediate board 56 mounted between the lower carry member 54 and the upper carry member 55, a first support roller 57 mounted between the lower carry member 54 and the intermediate board 56, and a second support roller 58 mounted between the upper carry member 55 and the intermediate board 56. The intermediate board 56 has an upper support surface 561 and a lower support surface 562. The first support roller 57 has a side face (not shown) in contact with the upward carry surface 541 and the lower support surface 562, including two ring elements 571 projecting from two ends thereof and two buffer portions 572. The second support roller 58 has a side face (not shown) in contact with the downward carry surface 551 and the upper support surface 561, including two ring elements 581 projecting from two ends thereof and two buffer portions 582. The buffer portions 572 of the first support roller 57 and the second buffer portions 582 of the second support roller 58 respectively rub against the respective side faces of the lower support member 51, the intermediate board 56 and the upper support member 52 to gradually reduce the back-and-forth rolling of the first support roller 57 and the second support roller 58 and shorten the time that equipment being protected shakes in a diminishing manner. In this preferred embodiment, the buffer portions 572 and 582 are made of a braking rubber having an adequate surface friction coefficient.
FIG. 6 is a schematic view of an aseismatic system 60 according to the present invention, in which an aseismatic support unit is applied to a computer network server. When the aseismatic system 60 of the present invention is installed on the construction site (computer room), a hoist (not shown) is used to lift equipment (computer network server 61) to be protected to an adequate level at the beginning. Then, aseismatic support units 621 and 622 of the present invention are moved in order to arrive at adequate positions beneath the computer network server, and also, links 631, 632, 633, 641, 642 and 643 are fixed to the aseismatic support units 621 and 622 by bolting so that the two aseismatic support units 621 and 622 are assembled to become the aseismatic system 60. Finally, the lifted computer network server 61 descends over the assembled aseismatic system 60 to complete the installation process. As such, in the process for installing the aseismatic system of the present invention, the aseismatic support units 621 and 622 are respectively moved to the adequate positions beneath the lifted computer network server at first and then the plurality of links are used for the assembly to complete the installing process. Power lines and other lines (all not shown) of the computer network server 61 need not be disconnected so that the computer network server continues operation. In this light, it is not necessary to have an oversized transporting vehicle and a large space for installation of the aseismatic system 60. Hence, difficulty in installing the aseismatic system decreases. Also, the time causing an influence of the installation process on the computer network server is shortened. Therefore, the customers will be more willing to use the aseismatic system.
FIG. 7 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a building. As shown, after the foundations 73 of a building are constructed, an aseismatic system 72 composed of aseismatic support units of the present invention respectively mounted at predetermined positions for setting up beams of the building will be made in accordance with the needs. It is noted that the aseismatic system 72 is assembled without a particular limitation to two aseismatic support units. Instead, it can be of only one aseismatic support unit mounted, for example, nearby the beam on the marginal edge of the foundations, depending on the needs of the construction site. Then, the main constructions such as the beams of the building and the whole frame 71 of the building are established above the installed aseismatic system 72. When an earthquake happens, shakes are transmitted from the foundations 73 to the frame 71 of the building. Then, the building swings together with the respective aseismatic systems 72 mounted beneath the beams of the frame 71 thereof. The kinetic energy of the shakes caused by the earthquake will be gradually diminished by means of the respective aseismatic systems 72. The frame 71 of the building will thus return to the original position without any overturn and damage. Thus, the aseismatic support unit of the present invention is capable of protecting the buildings and preventing the people inside the buildings from being injured as a result of the earthquake.
FIG. 8 is a schematic view of an aseismatic system according to the present invention, in which an aseismatic support unit is applied to a bridge. A bridge body 81 crosses over a river 85, having a bridge support structure 82 at two ends of the bridge body. The bridge support structure 82 is constructed over an abutment 86 on the two sides of the river 85 by means of an aseismatic system composed of a plurality of aseismatic support units 83 according to the present invention. This aseismatic system includes a plurality of hydraulic dampers 84 for restricting the range of displacements of the aseismatic system in the vertical and horizontal directions and further shortening the time that the aseismatic system shakes. When an earthquake happens, shakes are transmitted from the abutments 86 to the bridge body 81. Then, the bridge body 81 swings together with the aseismatic system in support of the bridge support structure 82 and gradually returns to the original position of the bridge body without overturn and/or collapse into the river which may cause a traffic interruption. It will be noted that the aseismatic system composed of the aseismatic support units 83 of the present invention can be mounted not only over the abutments on both sides of the river but also on the bridge over the river to provide the bridge with the quakeproof function.
FIG. 9 is a preferred embodiment of an aseismatic system 92 composed of aseismatic support units according to the present invention and applied to a virtual reality simulation system 90, in which a person 91 sits on a seat 93 above the aseismatic system 92 and faces toward a display device 96. A computer device 94 having a predetermined programs controls not only images displayed in the display device 96 (e.g., flat panel display) but also the vertical and horizontal movements of the aseismatic system 92 in accordance with the image displayed on the display device 96 by means of a driving device 95 and a transmitting device 951. With such an arrangement, the person 91 sitting on the seat 93 over the aseismatic system 92 gets a feeling as if actually driving on the road in a simulation environment. Hence, by using this virtual reality simulation system, the cost (e.g., automobile cost) for a real operation can be saved and the safety of the operation can be increased.
Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

1. An aseismatic support unit mounted between a base and a loaded article, comprising:

a lower support member mounted on said base;

an upper support member mounted above said lower support member to support said loaded article; and

a plurality of aseismatic units mounted between said lower support member and said upper support member, each of which comprising:

a lower carry member adjacent to said lower support member, having an upward carry surface on the top thereof;

an upper carry member adjacent to said upper support member, having a downward carry surface on the bottom thereof, said downward carry surface being opposite to said upward carry surface; and

a support roller mounted between said downward carry surface and said upward carry surface, having a side face on the side thereof;

wherein at least one ring element projects from said side face of said support roller in a perpendicular manner and said side face contacts with said downward carry surface and said upward carry surface.

2. The aseismatic support unit of claim 1, wherein the profile of said upward carry surface, viewed along a rolling direction of said support roller, is a U-shaped curve.

3. The aseismatic support unit of claim 1 wherein the profile of said downward carry surface, viewed along a rolling direction of said support roller, is a U-shaped curve, facing downward.

4. The aseismatic support unit of claim 1, wherein part of said downward carry surface has a frictional coefficient higher than the frictional coefficient of the other parts of said downward carry surface adjacent thereto.

5. The aseismatic support unit of claim 1, wherein part of said upward carry surface has a frictional coefficient higher than the frictional coefficient of the other parts of said upward carry surface adjacent thereto.

6. The aseismatic support unit of claim 1, wherein two said ring members project from two ends of said side face of said support roller in a perpendicular manner respectively.

7. The aseismatic support unit of claim 1, wherein at least one of said support rollers is composed of a plurality of solid spheres enclosed by a cylindrical shell.

8. The aseismatic support unit of claim 1, further comprising a plurality of dampers disposed in an oblique manner, each of said dampers being connected to said lower support member and said upper support member.

9. The aseismatic support unit of claim 8, wherein at least one of said dampers is a spring.

10. An aseismatic support unit mounted between a base and a loaded article, comprising:

a lower support member mounted on said base;

an intermediate board mounted between said upper carry member and said lower carry member, having an upper support surface and a lower support surface on the top and bottom thereof respectively;

a first support roller mounted between said upward carry surface of said lower carry member and said lower support surface of said intermediate board, having a first side face and a first central axial line on a first side and the center thereof respectively;

a second support roller mounted between said downward carry surface of said upper carry member and said upward support surface of intermediate board, having a second side face and a second central axial line on a second side and the center thereof respectively;

wherein at least one first ring element projects from said first side face of said first support roller in a perpendicular manner and said first side face contacts with said upward carry surface of said lower carry member and said lower support surface of said intermediate board; at least one second ring element projects from said second side face of said second support roller in a perpendicular manner and said second side face contacts with said downward carry surface of said upper carry member and said upper support surface of said intermediate board.

11. The aseismatic support unit of claim 10, wherein said first central axial line of said first support roller is perpendicular to said second central axial line of said second support roller.

12. The aseismatic support unit of claim 10, wherein said intermediate boards are connected by means of a plurality of links.

13. The aseismatic support unit of claim 10, wherein the profile of said upward carry surface, viewed along a rolling direction of said first support roller, is a U-shaped curve.

14. The aseismatic support unit of claim 10, wherein the profile of said downward carry surface, viewed along a rolling direction of said second support roller, is a U-shaped curve, facing downward.

15. The aseismatic support unit of claim 10, wherein the profile of said lower support surface, viewed along a rolling direction of said first support roller, is a U-shaped curve, facing downward.

16. The aseismatic support unit of claim 10, wherein the profile of said upper support surface, viewed along a rolling direction of said second support roller, is a U-shaped curve.

17. The aseismatic support unit of claim 10, wherein part of said downward carry surface has a frictional coefficient higher than the frictional coefficient of the other parts of said downward carry surface adjacent thereto.

18. The aseismatic support unit of claim 10, wherein part of said upward carry surface has a frictional coefficient higher than the frictional coefficient of the other parts of said upward carry other parts of said downward carry surface adjacent thereto.

19. The aseismatic support unit of claim 10, wherein part of said lower support surface has a frictional coefficient higher than the frictional coefficient of the other parts of said lower support surface adjacent thereto.

20. The aseismatic support unit of claim 10, wherein part of said upper support surface has a frictional coefficient higher than the frictional coefficient of the other parts of said upper support surface adjacent thereto.

21. The aseismatic support unit of claim 10, wherein two said first ring members project from two ends of said first side face of said first support roller in a perpendicular manner respectively.

22. The aseismatic support unit of claim 10, wherein two said second ring members project from two ends of said second side face of said second support roller in a perpendicular manner respectively.

23. The aseismatic support unit of claim 10, wherein at least one of said first support rollers is composed of a plurality of solid spheres enclosed by a cylindrical shell.

24. The aseismatic support unit of claim 10, wherein at least one of said second support rollers is composed of a plurality of solid spheres enclosed by a cylindrical shell.

25. The aseismatic support unit of claim 10, further comprising a plurality of dampers disposed in an oblique manner, each of said dampers being connected to said lower support member and said upper support member.

26. The aseismatic support unit of claim 25, wherein at least one of said dampers is a spring.