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1. 发明专利

JP2001193785A HYDRAULIC DAMPER 失效
公开(公告)号：JP2001193785A
公开(公告)日：2001-07-17
申请号：JP2000001578
申请日：2000-01-07
申请人： TOYOOKI KOGYO KK , HITACHI METALS TECHNO LTD , KAJIMA CORP
发明人： ICHIKAWA NAOKI , HANJI MASAHIRO , KOTAKE YUJI , KURINO HARUHIKO
IPC分类号： F16F15/02 , F16F9/18 , F16F9/34 , F16F15/023
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic damper having improved response to the closing operation of a switch valve being open. SOLUTION: Operating chambers 206, 208 are formed at both sides of a piston 204a sliding in a cylinder body. The operating chambers 206, 208 in a cylinder 204 are connected together via switch valves 2, 4 which open/close a pilot flow passage connected to an action chamber to be communicated or shut off by pilot valves 6, 8, so that vibration is damped by, for example, opening the switch valve 2 to absorb a hydraulic oil delivered from one operating chamber 206 into the other operating chamber 208. In this case, an introduction flow passage 56 is provided for introducing the hydraulic oil from the other operating chamber to the action chamber to close the switch valve 2. A check valve 65 is laid in the introduction flow passage 56 for restricting the flow out of the action chamber.

2. 发明专利

JP2001193780A HYDRAULIC SEISMIC CONTROL DAMPER 失效
公开(公告)号：JP2001193780A
公开(公告)日：2001-07-17
申请号：JP2000005756
申请日：2000-01-06
申请人： TOYOOKI KOGYO KK , HITACHI METALS TECHNO LTD , KAJIMA CORP
发明人： ICHIKAWA NAOKI , HANJI MASAHIRO , KOTAKE YUJI , KURINO HARUHIKO
IPC分类号： F16F15/02 , F16F9/50 , F16F15/023
摘要： PROBLEM TO BE SOLVED: To provide great damping force even in a working range where a piston works at a slow speed (oscillation with a small amplitude or a long cycle) by using a control valve. SOLUTION: A hydraulic seismic control damper comprises control valves 21, 22 provided in an oil passage P1 connecting both hydraulic chambers R1, R2 formed at both sides of a piston 13 reciprocated in a cylinder 11 for generating damping force and a pair of throttles 41, 51 provided in a pair of passages P2, P3 connecting both hydraulic chambers R1, R2 and the oil passage P1 and an accumulator 30, respectively, for permitting the flow of a hydraulic oil. Relief valves 42, 52 are provided in series to the throttles 41, 51 in passages P2, P3 so that no hydraulic oil can flow to the accumulator 30 until the pressure of the hydraulic oil in both hydraulic chambers R1, R2 and the oil passage P1 gets to a set value.

3. 发明专利

JP2001279947A DAMPING HYDRAULIC DAMPER 失效
公开(公告)号：JP2001279947A
公开(公告)日：2001-10-10
申请号：JP2000091509
申请日：2000-03-29
申请人： TOYOOKI KOGYO KK , HITACHI METALS TECHNO LTD , KAJIMA CORP
发明人： ICHIKAWA NAOKI , HANJI MASAHIRO , KOTAKE YUJI , SEN SHII , SUZUKI TAKAYUKI , KURINO HARUHIKO , SHIMIZU MIKI , TAGAMI ATSUSHI
IPC分类号： E04B1/36 , E04H9/02 , F16F9/50 , F16F15/02 , F16F15/023
摘要： PROBLEM TO BE SOLVED: To obtain a damping hydraulic damper for improving an open response of opening and closing valves opened and closed in accordance with connection/ cut-off of a pilot channel. SOLUTION: Operating rooms 206 and 208 are formed on both sides of a piston 204a sliding the inside of a cylinder body 204, the pilot channel connecting between both operating rooms 206 and 208 to an action room is connected through the opening and closing valves 2 and 3 opened and closed by connection/ cut-off of pilot valves 4 and 5, for example, the opening and closing valve 2 is opened to discharge hydraulic fluid from one operating room 206, and the hydraulic fluid is absorbed by the other operating room 208 to damp vibration. In that case, variable throttle valves 8 and 9 are provided to the pilot channel to adjust the lowering of the hydraulic fluid pressure in the action room, and the speed of the open response speed of the opening and closing valve 2 can be adjusted.

4. 发明专利

JP2006349130A HYDRAULIC SYSTEM 审中-公开
公开(公告)号：JP2006349130A
公开(公告)日：2006-12-28
申请号：JP2005179117
申请日：2005-06-20
申请人： TOYOOKI KOGYO KK
发明人： HANJI MASAHIRO , OIKAWA TOMOJI
IPC分类号： F15B1/00 , F15B11/00
摘要： PROBLEM TO BE SOLVED: To easily perform wiring work for electrically connecting a hydraulic controller controlling a motor for rotating and driving a hydraulic pump and hydraulic fluid, and an external control device. SOLUTION: The motor 4 for rotating and driving the hydraulic pump 5 and the solenoid switch valve 13 are electrically connected with an external control device by a control board 19, and the control board 19 has a power wiring connector 21A for detachably mounting power wiring 21 for allowing electric current to flow to the motor 4 from the external control device, a control wiring connector 22A for detachably mounting control wiring 22 for allowing electric current to flow from the external control device to the solenoid switch valve 13, and a signal wiring connector 23A for detachably mounting signal wiring 23 for allowing a signal for energizing and non-energizing the solenoid switch valve 13 from the external control device. COPYRIGHT: (C)2007,JPO&INPIT

5. 发明专利

JP2001116007A PILOT OPERATION CHECK VALVE 失效
公开(公告)号：JP2001116007A
公开(公告)日：2001-04-27
申请号：JP29829899
申请日：1999-10-20
申请人： TOYOOKI KOGYO KK
发明人： SUGIYAMA MASARU , YAMAGUCHI KUNIO , ICHIKAWA NAOKI , HANJI MASAHIRO
IPC分类号： F16K15/18 , F15B11/028 , F15B11/08
摘要： PROBLEM TO BE SOLVED: To provide a pilot operation check valve capable of saving energy by dispensing with continuous operation of a hydraulic pump as a puppet valve element is seated on a valve seat to prohibit flow from a load flow passage connected to an actuator to a supply/discharge flow passage in pressurizing the actuator. SOLUTION: A pressure intensifying piston 33 is axially movably provided on an auxiliary valve body 29 for composing part of a valve main body 10, a pressure intensifying chamber 36 is formed at a tip of a small diameter part 34 of the pressure intensifying piston 33, springs 37, 38 to energize the pressure intensifying piston 33 for intensifying inner pressure of the pressure intensifying chamber 36 are provided, and the pressure intensifying chamber 36 is communicated with a load flow passage 18. As the pressure intensifying piston 33 is energized in a volume reducing direction of the pressure intensifying chamber 36 by force of the springs 37, 38, therefore, pressure of the pressure intensifying chamber 36 is intensified, intensified pressure acts on the load flow passage 18 to sufficiently pressurize a hydraulic cylinder 6, and continuous operation of a hydraulic pump P can be dispensed with, thereby energy can be saved.

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