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1. 发明专利

JP2001323961A HYDRAULIC DAMPER FOR VIBRATION CONTROL 失效
公开(公告)号：JP2001323961A
公开(公告)日：2001-11-22
申请号：JP2000141459
申请日：2000-05-15
申请人： TOYOOKI KOGYO KK , HITACHI METALS TECHNO LTD , KAJIMA CORP
发明人： ICHIKAWA NAOKI , SAKAI MITSUO , FUJISAKA MASAHIRO , KOTAKE YUJI , KURINO HARUHIKO
IPC分类号： E04H9/02 , F16F9/34 , F16F9/50 , F16F15/02 , F16F15/023
摘要： PROBLEM TO BE SOLVED: To reduce the overall size of a hydraulic damper for vibration control by controlling the flow of working fluid between a first working chamber and a second working chamber by means of a single pilot-operated stop valve. SOLUTION: A pilot-operated stop valve 21 has in a valve body 47, a small-diameter hole 77 and a large-diameter hole 79 connected via a valve seat 81. A main valve element 51 with a seat surface 83 seated on the valve seat 81 is slidably fitted in the large-diameter hole 79. The small-diameter hole 77 and the large-diameter hole 79 are connected to a first working chamber 15 and a second working chamber 17 respectively At the back of the main valve element 51, an acting chamber 85 is formed, which is connected to the low-pressure side by a pilot passage 75 in which a pilot valve 55 is interposed. The main valve element 51 has a first pressure receiving surface S1 and a second pressure receiving surface S2 for respectively receiving the pressures of working fluid in the small-diameter hole 77 and the large-diameter hole 79 in the unseated direction. A restriction 61 and a first check valve 65 are interposed in series in a first connecting passage 62 connecting the small-diameter hole 77 and the acting chamber 85. A restriction 63 and a second check valve 67 are interposed in series in a second connecting passage 64 connecting the large-diameter hole 79 and the acting chamber 85.

2. 发明专利

JP2002130368A HYDRAULIC DAMPER FOR DAMPING 失效
公开(公告)号：JP2002130368A
公开(公告)日：2002-05-09
申请号：JP2000323769
申请日：2000-10-24
申请人： HITACHI METALS TECHNO LTD , TOYOOKI KOGYO KK
发明人： KOTAKE YUJI , SEN SHII , SAKAI MITSUO
IPC分类号： F16F15/027 , F16F9/32 , F16F9/50 , F16F15/02 , F16F15/023
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic damper for damping in which damper action can be performed definitely even when a valve driving element gets out of order and the damage therefore can be held down to a minimum. SOLUTION: A failure remedy means 23 to 26, 29, CR compares an ON/OFF status of control signal S1 to S3 from a control means 14 and an ON/OFF status of driving current D1 to D3 from the valve driving element SSR1 to SSR3, responding to the control signal S1 to S3, and when both of the ON/OFF status do not coincide, then electrification of a valve driving power supply circuit SBL is intercepted to suspend the operation of a open/close control valve V1 positively and also to allow oil to move between hydraulic chambers 4A, 4B through a throttle valve V3 which operates when current is intercepted, thereby the damper action can be performed without fail and a deterioration of a damping effect of the hydraulic damper 31 for damping due to the failure of the valve driving element SSR1 to SSR3 can be restrained to a minimum.

3. 发明专利

JP2000274555A OPENING AND CLOSING VALVE 失效
公开(公告)号：JP2000274555A
公开(公告)日：2000-10-03
申请号：JP7820899
申请日：1999-03-23
申请人： TOYOOKI KOGYO KK , HITACHI METALS TECHNO LTD , KAJIMA CORP
发明人： ICHIKAWA NAOKI , AMANO KENICHI , SAKAI MITSUO , KOTAKE YUJI , SEN SHII , KURINO HARUHIKO , SHIMIZU MIKI
IPC分类号： F16K31/122 , F16F9/34 , F16K17/10
摘要： PROBLEM TO BE SOLVED: To provide an opening and closing valve devised so that a main valve body does not work to open even in the case when pressure of working oil on the side of a large diametrical hole becomes higher than pressure of working oil on the side of a small diametrical hole in a valve opening state. SOLUTION: A small diametrical hole 12 and a large diametrical hole 14 are continuously provided in a valve main body 1 through a valve seat 16, and a main valve body 24 having a conical seating surface 24a to be seated on the valve seat 16 is fitted and inserted into the large diametrical hole 14. A working chamber 26 is formed on a back part of the main valve body 24, and the working chamber 26 and a first main channel 6 are connected to each other through a pilot valve 34. A first connecting passage 42 to connect the small diametrical hole 12 and the working chamber 26 to each other and a second connecting passage 56 to connect the large diametrical hole 14 and the working chamber 26 to each other are provided on the main valve body 24, a restrictor 52 and a first check valve 51 are arranged in the first connecting passage 42, and a second check valve 65 is arranged in the second connecting passage 56.

4. 发明专利

JPH10314999A HYDRAULIC PRESSURIZED MACHINING DEVICE 失效
公开(公告)号：JPH10314999A
公开(公告)日：1998-12-02
申请号：JP13943797
申请日：1997-05-13
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , OOBA TAKATSUNA
IPC分类号： B30B15/00 , B30B1/32 , B30B15/20 , B30B15/22
摘要： PROBLEM TO BE SOLVED: To suppress useless delivery from a hydraulic pump and to obtain the machining device with a small power loss by controlling, through an inverter, a motor for driving a hydraulic pump in such a manner that, after the pressure of a hydraulic cylinder reaches a target value, if it exceeds the target value, a signal for setting the speed of the hydraulic cylinder in the counter pressurizing direction is made smaller than in other cases. SOLUTION: With a hydraulic cylinder 5 actuated, a machining tool 7 is made closer to a work 6 at high speed. With the position of the hydraulic cylinder 5 measured by a linear scale 9, if the machining tool 7 approaches the work 6, the number of revolution of a motor 2 is reduced, decelerating the speed of the hydraulic cylinder 5. The machining tool 7 comes into contact with the work 6, increasing the pressurizing force. When the pressurizing force measured by a load cell 8 reaches the 60% of a target pressure, the speed of the hydraulic cylinder 5 is further reduced. With the pressurizing force reaching the target pressure, the motor 2 is minutely advanced or retreated thereafter within the time set by a timer, thereby maintaining the pressurizing force at the target value.

5. 发明专利

JPH10110855A SOLENOID PROPORTIONAL VALVE DRIVING DEVICE 失效
公开(公告)号：JPH10110855A
公开(公告)日：1998-04-28
申请号：JP28597496
申请日：1996-10-07
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , HARADA KAZUYUKI
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To dispense with cable connection between electric equipment boxes for input by key operation by arranging a signal wire for transmitting a control signal from a control device to an amplifier and a current carrying wire for supplying electric current from a power source circuit to the control device over first and second electric equipment boxes. SOLUTION: An amplifier 7 is arranged on a first electric equipment box 6 arranged on a solenoid proportional valve together with a power source circuit 8. A control device is detachably attached to the electric equipment box independently thereon, and arranged on a second electric euipment box 11 which can be manually held. A signal wire 16 for transmitting control signal from the control device to the amplifier 7 and a current supply wire 15 for supplying electric current from the power source circuit 8 to the control device are arranged over the first and second electric equipment boxes 6 and 11. It is unnecessary to connect a cable additionally for input by key operation, and to disconnect it after compliting input, so that handling is facilitated.

6. 发明专利

JPH10110854A SOLENOID PROPORTIONAL VALVE DRIVING DEVICE 失效
公开(公告)号：JPH10110854A
公开(公告)日：1998-04-28
申请号：JP28597596
申请日：1996-10-07
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , HARADA KAZUYUKI
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To properly select a parameter by adopting a time element parameter selectively to a time utilizing mechanism and a gradient utilizing mechanism based on a selection signal. SOLUTION: Parameters are previously written in an EEPROM 20 of a control device 10 so as to obtain a command signal to an amplitude 7, that is, to obtain electric current to solenoids A, B. The paramiters include a time element parameter which is selectively used by a time utilizing mechanism as a value equivalent to succession period of operation for varying current carrying time as passage of time or by a gradient utilizing mechanism as a value equivalent to a current variation in respect to temporal fluctuation based on a selection signal of a selection switch 23. It is thus possible to select a proper parameter quickly.

7. 发明专利

JPH0566846A ELECTROMAGNETIC PROPORTIONAL VALVE 失效
公开(公告)号：JPH0566846A
公开(公告)日：1993-03-19
申请号：JP25573491
申请日：1991-09-06
申请人： TOYOOKI KOGYO KK
发明人： SUGIYAMA MASARU , SAKAI MITSUO , OOBA TAKATSUNA , INAISHI FUMINORI
IPC分类号： F16K31/06 , G05D7/06
摘要： PURPOSE:To easily obtain an adjustment operation of a setting signal for setting an adjustment flow rate or adjustment pressure of a valve, in a position separated from an installation place of the valve. CONSTITUTION:A setting unit 4 which has plural setting devices and rise/fall regulators in the inside and outputs a setting signal is loaded on a valve main body 1 provided with electromagnets 2A, 2B and connected electrically through a wiring 5 to an amplifying unit 3 so that remote control can be executed from the amplifying unit 3 for supplying a driving current corresponding to the setting signal to the electromagnets 2A, 2B. In such a way, after the valve is installed, when plural setting devices and rise regulators are subjected to adjustment operation in order to adjust the setting signal, a worker can execute a work by positioning the setting unit 4 at hand without going into a narrow and small place in which the valve is installed.

8. 发明专利

JPH04302787A CONTROL APPARATUS FOR ELECTROMAGNETIC CONTROL VALVE 失效
公开(公告)号：JPH04302787A
公开(公告)日：1992-10-26
申请号：JP14231791
申请日：1991-03-29
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO
IPC分类号： F16K31/06 , H01F7/18
摘要： PURPOSE:To provide an electromagnetic control valve controlling apparatus enabling imparting a dither signal to an exciting current flowing in a solenoid, by using a small dumber of constituent elements. CONSTITUTION:A power switching element 12 is turned on/off by a pulse signal outputted from a comparator 6, which pulse signal is inverted in accordance with the largeness of an output signal from a current detector 14 constituting one and the other input signal of the comparator 6. As this one input signal of the comparator 6, a difference output between a set signal of a calculator 2 and a smoothed current-detector 14 output signal is used and simultaneously an oscillation signal from an oscillator 11 is applied to that one input signal.

9. 发明专利

JP2002188601A APPARATUS AND METHOD FOR CONTROLLING HYDRAULIC DRIVING DEVICE 失效
公开(公告)号：JP2002188601A
公开(公告)日：2002-07-05
申请号：JP2000390436
申请日：2000-12-22
申请人： SANYO ELECTRIC CO , TOYODA MACHINE WORKS LTD , CNK KK , TOYOOKI KOGYO KK
发明人： ITO MASAHIKO , YOSHIKAWA HIROSHI , TANIGUCHI TAKAO , NAGAHAMA TAKAYA , NAGASAKA AKITAKE , YAMAJI KOZO , SAKAI MITSUO , OGURA NORIMASA
IPC分类号： F15B9/09 , F15B9/04
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and method accurately performing positional control of a hydraulic cylinder in a hydraulic driving device in which a leakage flow and non-linearity exist internally. SOLUTION: The hydraulic driving device 1 comprises a servo motor 11, a hydraulic pump 13 and a hydraulic cylinder 15. A motor driving device 9 drives the hydraulic cylinder 15 by means of positional command Xcmd from a positional commanding generator 5. After the hydraulic cylinder reaches the initial desired position after the positional command is output from the positional command generator 5, a positional command corrector 7 corrects the positional command Xcmd as Xcmd*=Xcmd+(Xcmd-Xp) using position Xp of the hydraulic cylinder 15 which a positional sensor 17 detects. If the corrected corresponding positional command Xcmd* is input to a summing point 41, the moving position of the hydraulic cylinder 15 becomes p*= Xcmd*-E*=(Xcmd+E)-E=Xcmd when it reaches the stopping condition and becomes the expected desired position Xcmd.

10. 发明专利

JP2986577B2 失效
公开(公告)号：JP2986577B2
公开(公告)日：1999-12-06
申请号：JP14231791
申请日：1991-03-29
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO
IPC分类号： F16K31/06 , H01F7/18

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