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1. 发明专利

JPH06133495A LOW VIBRATION CARRIAGE UTILIZING MAGNETIC BEARING 失效
公开(公告)号：JPH06133495A
公开(公告)日：1994-05-13
申请号：JP27585592
申请日：1992-10-14
申请人： KAJIMA CORP
发明人： MIDORIKAWA HIROSHI , MIURA YOSHIKATSU , YANO KENICHI , IIDA MASATO , UENO KAORU , TSUJI TAIICHI , KATAMURA RITSUTA
IPC分类号： B60G17/015 , F16C32/04 , H02K7/09
摘要： PURPOSE:To alleviate a vibration of a conveying truck by supporting wheels of the truck to drive the wheels by a motor by magnetic bearings, and providing a controller for driving the bearings according to an output signal of a sensor provided in the truck to detect a shape of a road surface. CONSTITUTION:A pair of right and left wheels 2, 2 are provided at front and rear of a carriage 1 of a conveying vehicle A for placing a material B to be conveyed. An axle 3 for connecting the wheels 2, 3 is supported to the carriage 1 by a pair of magnetic bearings 4, 4, and fixed at a center to a coil of a motor 7. The bearing 4 is formed of a rotor and a stator. The axle 3 is fixed to the rotor, and the stator is opposed to the rotor through a gap, and has many electromagnets having different polarities adjacent at an equal interval in a circumferential direction. A sensor 8a for detecting a displacement of a road surface R is provided on the carriage 1, and energization of the electromagnet of the bearing 4 is controlled by an output of the sensor 8a through a controller 10. Thus, since vibration of the vehicle A is alleviated, it can stably convey a precise machine.

2. 发明专利

JPH11172901A ELECTRIC WIRE TREATING FACILITY FOR BASE ISOLATION FLOOR 失效
公开(公告)号：JPH11172901A
公开(公告)日：1999-06-29
申请号：JP33881897
申请日：1997-12-09
申请人： JAPAN BROADCASTING CORP , KAJIMA CORP
发明人： NABESHIMA ICHIRO , MIZUNO TAKAYUKI , MATSUNAGA YOSHINORI , KATAMURA RITSUTA
IPC分类号： E04F15/024 , H02G3/38 , H02G3/28
摘要： PROBLEM TO BE SOLVED: To eliminate danger of damaging electric wires by torsion, friction with a floor, etc., in the case when relative displacement grows between a fixed floor and a base isolation floor on the base isolation floor. SOLUTION: This device is constituted of two pieces of electric wire placing plates 10A, 10B having enough width to place electric wires and required length. One end part of the electric wire placing plate 10A is connected to the side of a fixed floor 2 by pins 11A, 11B free to revolve horizontally and vertically, one end part of the other plate 10B is connected to the side of a base isolation floor 4 by the pin 11A free to horizontally revolve, and the other end parts of both of the electric wire placing plates 10A, 10B are connected to each other by the pins 11A, 11B free to revolve horizontally and vertically.

3. 发明专利

JPH10195816A NON-CONTACT TYPE CABLE DAMPING DEVICE UTILIZING MAGNET 失效
公开(公告)号：JPH10195816A
公开(公告)日：1998-07-28
申请号：JP82797
申请日：1997-01-07
申请人： KAJIMA CORP
发明人： KATAMURA RITSUTA , NAKANO TATSUJI , HIRAMATSU YUJI
IPC分类号： E01D1/00 , E01D11/00 , E01D11/04 , E01D19/16
摘要： PROBLEM TO BE SOLVED: To effectively reduce vibration of the diagonal cable of a cable stayed bridge due to the wind in non-contact by a simple device. SOLUTION: This is a damping device arranged between the main girder 1 and the diagonal cable 2 of a cable stayed bridge and reducing vibration of the diagonal cable 2, a movable side magnet 6 is provided on a fitting plate 5 fixed to the diagonal cable 2 through a rod 4, and fixed side magnets 9 are provided on a fitting plate 8 fixed to the main girder 1 through a supporting frame 7. A plurality of the fixed side magnets 9 are arranged opposite to the movable side magnet 6 without contacting with it, and when the amplitude of vibration of the diagonal cable 2 reaches a set value, the movable side magnet 6 is attracted so as to restrain the vibration of the diagonal cable 2, and when the force applied to the restraint point exceeds the attractive force of the magnets, restraint of the diagonal cable 2 is released, and by repeating the restraint and the release, energy of a primary vibration mode is shifted to a higher vibration mode so as to reduce the vibration.

4. 发明专利

JP2001263412A BASE ISOLATION DEVICE 失效
公开(公告)号：JP2001263412A
公开(公告)日：2001-09-26
申请号：JP2000073718
申请日：2000-03-16
申请人： KAJIMA CORP
发明人： MATSUNAGA YOSHINORI , UCHIMURA YUTAKA , KATAMURA RITSUTA
IPC分类号： E04B1/36 , E04H9/02 , F16F7/00 , F16F15/02
摘要： PROBLEM TO BE SOLVED: To provide a lightweight base isolation device which can support a work to be supported. SOLUTION: In this base isolation device in which a first link portion 3 having a first arm 9 is turnably provided on a base B installed on a floor F, a second link portion 13 having a second arm 19 is turnably provided on a second support portion 11 at the tip of the first arm, and a work A is turnably provided on a third support portion 21 provided on the tip of the second arm, a first rail device R1 is provided between the second support portion and a base, a second rail device R2 is provided between a second link and the work A, the first and second rail devices comprise annular rails 30, 32, a plurality of roller rolling on the rails, and a U-shaped structure which turnably holds the rollers by pins, the movement in the horizontal direction is achieved by the first and second links, the vertical load is supported by the rail devices, and the weight of the arms and other components is reduced.

5. 发明专利

JPH08326013A METHOD AND EQUIPMENT FOR DAMPING DIAGONAL-CABLE BRIDGE DIAGONAL-MEMBER CABLE 失效
公开(公告)号：JPH08326013A
公开(公告)日：1996-12-10
申请号：JP13678595
申请日：1995-06-02
申请人： KAJIMA CORP
发明人： NAKANO TATSUJI , KATAMURA RITSUTA , OGASAWARA KATSURA
IPC分类号： E01D1/00 , E01D11/04 , E01D19/16
摘要： PURPOSE: To inhibit all vibrations such as the wake galloping, rain vibrations, vortex excitation, etc., of the diagonal-member cables of a diagonal cable bridge effectively. CONSTITUTION: One end of a cylinder-lock type constraining-releasing device 4 is fixed to a main girder 2, and the other end is fastened to a diagonal-member cable 3. The diagonal-member cable 3 is brought to the state of constraint release first, and conducts the vibrations of a chord in length L using a fixing section as an end section to disturbance such as a wind. When amplitude reaches a set value, the constraining-releasing device 4 constrains the displacement of the diagonal-member cable 3 by a command from a controller 6. The diagonal-member cable 3 performs the vibrations of a chord in length (L-a) using a device mounting point as an end section by a constraint, and is vibrated in the mode of vibrations employing the device mounting point as a node, but higher vibrations are generated by releasing the constraint of the diagonal-member cable 3 when force applied to the diagonal-member cable 3 at the device mounting point reaches a set value, and energy in a primary mode can be transferred to a higher mode. Accordingly, the vibrations in the primary mode are damped.

6. 发明专利

JPH11172618A DIAGONAL MEMBER CABLE DAMPER OF CABLE STAYED BRIDGE 失效
公开(公告)号：JPH11172618A
公开(公告)日：1999-06-29
申请号：JP33974097
申请日：1997-12-10
申请人： KAJIMA CORP
发明人： NAKANO TATSUJI , KATAMURA RITSUTA
IPC分类号： E01D1/00 , E01D11/00 , E01D11/04 , E01D19/16 , E01D101/00
摘要： PROBLEM TO BE SOLVED: To effectively and surely control every vibration such as wake galloping, rain vibration, over excitation of a diagonal member cable of a cable stayed bridge. SOLUTION: A damper is set between a main girder 1 of a cable stayed bridge and a diagonal member cable 2 and reduces the vibration of the diagonal member cable 2 with confining/releasing motion by a magnet, it is constituted of a magnetic material 3 mounted to the diagonal member cable 2, an electromagnet 4 provided in an anchor member 6 fixed to the main girder 1 by approaching the magnetic material 3 and a controller 5 for controlling impressed voltage of the electromagnet based on wind velocity, confining force of the diagonal member cable is changed in accordance with wind velocity, and it is made to correspond with vibration of every wind velocity. Or, the diagonal member cable is connected to the main girder with a damper, the magnet capable of absorbing the basic end of a piston rod is provided in the inside of a cylinder of the damper, and the damping effect by both magnet and damper can be provided.

7. 发明专利

JPH06129482A COUNTER WEIGHT TYPE VIBRO-ISOLATING AND ELIMINATING DEVICE 失效
公开(公告)号：JPH06129482A
公开(公告)日：1994-05-10
申请号：JP27580592
申请日：1992-10-14
申请人： KAJIMA CORP
发明人： OSHIO MAKOTO , YANO KENICHI , ANDO HIROSHI , TSUKAMOTO NOBUYUKI , TSUJI TAIICHI , ADACHI NAOTO , KATAMURA RITSUTA
IPC分类号： E04F15/18 , F16F15/02
摘要： PURPOSE:To lighten a burden in the gravitational direction of an actuator as well as to set a gravitational natural frequency in an optional manner. CONSTITUTION:This device is featured that each weight of a vibro-eliminating table 3 and a machine M is compensated by a counter weight 6, and it is provided with a control circuit which drives an actuator 1 with each signal out of vertical relative displacement sensor S1 and a horizontal acceleration sensor S2 of the table 3.

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