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1. 发明专利

JPH11280705A Hydraulic valve operation device 失效
标题翻译：液压阀操作装置
公开(公告)号：JPH11280705A
公开(公告)日：1999-10-15
申请号：JP8117398
申请日：1998-03-27
申请人： Shin Caterpillar Mitsubishi Ltd , 新キャタピラー三菱株式会社
发明人： YOSHINO KAZUNORI , NAKANO TAKAO , TANAKA AKIO , FUTAHASHI KENSUKE , TAMURA MANABU , YAMAMOTO KEISUKE
IPC分类号： F15B13/044 , F16K3/24 , F16K11/07
摘要： PROBLEM TO BE SOLVED: To provide a moving quantity of a control spool of a hydraulic valve according to a manipulated variable of an operation means by outputting pilot pressure oil of pressure in proportion to a displacement quantity of a pilot spool by a fluid pressure control valve.
SOLUTION: A command voltage in proportion to a manipulated variable is outputted according to the operation direction by an operation lever 42a of an operation means 40 so that a command electric current in proportion to this is outputted to a driving coil 20 of a fluid pressure control valve 2 from a servo amplifier 44. A coil 20 generates driving force of the size and the direction in proportion to the command electric current to move a pilot spool 16 of a pilot valve 10 up to a place for balancing spring force of a neutral spring 18 and the driving force. Pilot oil pressure in proportion to a displacement quantity of the spool 16 is outputted to a control cylinder 30 so that a control piston 34 moves a control spool 61 up to a place for balancing with the spring force of the neutral spring by the pilot oil pressure to thereby obtain a movement of the spool 61 in proportion to the manipulated variable of the operation means 40.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：根据操作装置的操作变量提供液压阀的控制阀芯的移动量，通过流体压力控制阀输出与先导阀芯的位移量成比例的压力的先导压力油。解决方案：通过操作装置40的操作杆42a根据操作方向输出与操作变量成比例的指令电压，使得与其成比例的指令电流被输出到流体压力控制的驱动线圈20 线圈20产生与指令电流成比例的尺寸和方向的驱动力，以将先导阀10的先导阀芯16移动到用于平衡中性弹簧的弹簧力的位置 18和驱动力。与阀芯16的位移量成比例的先导油压力被输出到控制缸30，使得控制活塞34通过先导油压力将控制阀芯61移动到与中性弹簧的弹簧力平衡的位置从而获得与操作装置40的操作变量成比例的滑阀61的运动。

2. 发明专利

JPH08255032A OPERATION LOAD ADJUSTING DEVICE OF OPERATION LEVER 失效
公开(公告)号：JPH08255032A
公开(公告)日：1996-10-01
申请号：JP8340595
申请日：1995-03-15
申请人： CATERPILLAR MITSUBISHI LTD
发明人： KUWABARA TOSHIO , TAMURA MANABU , SHIGEMITSU HIROAKI , NOSAKA HIROSHI
IPC分类号： E02F9/20 , B66C13/56 , G05G9/047
摘要： PURPOSE: To enable an operator to actually feel a manipulated variable without greatly increasing a spring energizing force by providing a means which gives pulsating variation to the operation load of the operation lever. CONSTITUTION: At the center part on the top surface of a swing body 3, the base end part of the operation lever 4 is fixed in one body. A push rod 11 is always energized upward by a return spring 14 interposed between an upper spring receiver 12 and a lower spring receiver 13. An angle detector 7Y detects right-left directional and front-rear directional swing angles of the operation lever 4 and outputs signals to a control part. When the operation lever 4 is swung, a driving motor 17 rotates and reverses periodically under the command of the control part to move up and down the lower spring receiver 13. Consequently, the spring length of the return spring 14 varies to give the pulsating variation to the operation load of the operation lever 4.

3. 发明专利

JPH08125694A TRANSMISSION CIRCUIT AND TRANSMISSION METHOD 失效
公开(公告)号：JPH08125694A
公开(公告)日：1996-05-17
申请号：JP25544694
申请日：1994-10-20
申请人： CATERPILLAR MITSUBISHI LTD
发明人： KUWABARA TOSHIO , MATSUBARA MORIHIKO , TAMURA MANABU , OKANO MASAHIRO
IPC分类号： H04L25/02 , H04L12/40 , H04L25/08 , H04Q9/00
摘要： PURPOSE: To transmit signals between different controllers even when an electric wire used to supply power in a controller is broken due to a fault. CONSTITUTION: First and second output terminals of a differential driver 1 are respectively connected to an L electric wire 30 and L electric wire wire 31 via 1st and 2nd capacitors 3, 4. First and second input terminals of a differential receiver 2 are respectively connected to the L electric wire 30 and L electric wire 31 via 3rd and 4th capacitors 5, 6. An output signal of the differential receiver 2 is inverted by a 1st inverter 9 and fed back to the 2nd input terminal of the differential receiver 2 via a 2nd resistor 8. An output signal of the 1st inverter 9 is inverted by a 2nd inverter 10 and fed back to the 1st input terminal of the differential receiver 2 via a 1st resistor 7.

4. 发明专利

JPH07326390A CHARGING TYPE BATTERY AND CHARGING DEVICE THEREFOR 失效
公开(公告)号：JPH07326390A
公开(公告)日：1995-12-12
申请号：JP14230294
申请日：1994-06-01
申请人： CATERPILLAR MITSUBISHI LTD
发明人： AWANO KATSUSUKE , TAMURA MANABU
IPC分类号： H01M10/44 , H01M10/46 , H02J7/00
摘要： PURPOSE:To charge a charging type battery for the radio control device or the like of a construction machinery without requiring electrical contact with a charging device, prevent the occurrence of a charging failure or a shortcircuit accident across electrodes and improve charging work efficiency. CONSTITUTION:A charging device 70 is provided with a rectifier circuit 11, an oscillation circuit 12 and induction coils 17 and 18, and the circuit 12 is energized to excite the coils 17 and 18, thereby generating alternating field. A charging type battery 13 equipped with an induction coil 14, a rectifier circuit 19 and batteries 13a and 13b is housed in the space 72 of the charging device 70 and induced current is generated via the electromagnetic induction action of the coil 14 in the alternating field. Then, the induced current is stored in the batteries 13a and 13b.

5. 发明专利

JPH07160413A JOY STICK TYPE OPERATION LEVER DEVICE 失效
公开(公告)号：JPH07160413A
公开(公告)日：1995-06-23
申请号：JP34075293
申请日：1993-12-09
申请人： CATERPILLAR MITSUBISHI LTD
发明人： MIKI MASATOSHI , KUWABARA TOSHIO , TAMURA MANABU
IPC分类号： B66C13/40 , B66C13/56 , G05D3/12 , G05G9/047 , G06F3/038 , G06F11/20 , G06F3/033
摘要： PURPOSE:To minimize the number of wires for output to a main control part when signal data from a joy stick type operation lever are outputted to the side of the main control part. CONSTITUTION:The subcontrol part consisting of a central control circuit 8, an AD converting circuit 9, a digital input circuit 10, a memory circuit 11, and a serial signal output circuit 12 is provided between the joy stick type operation lever and main control part, and the signal data from the joy stick type operation lever are outputted in the form of serial data from the subcontrol part to the main control part, thereby reducing output lines from the subcontrol part to the main control part to one.

6. 发明专利

JPH0777205A BOOSTER DEVICE 失效
公开(公告)号：JPH0777205A
公开(公告)日：1995-03-20
申请号：JP22585093
申请日：1993-09-10
申请人： CATERPILLAR MITSUBISHI LTD
发明人： TODA NAOSHI , AWANO KATSUSUKE , KUBOTA YORIMICHI , TAMURA MANABU
IPC分类号： E02F3/36 , F15B3/00 , F15B11/028
摘要： PURPOSE:To provide a booster device capable of automatically obtaining boosted oil pressure when necessary, without resetting the rated pressure of a hydraulic system. CONSTITUTION:An operating valve 12 connected to a hydraulic pump 13 directional-controls pump-discharged pressure oil to control an opening and closing cylinder 4 for opening and closing a jaw of a breaker. A pilot type check valve 8 is interposed between expansion side oil passages 271, 272 between the operating valve 12 and the opening and closing cylinder 4. The checking action of the check valve 8 is released by pilot pressure guided from a contraction side oil passage 28 on the opposite side through a pilot oil passage 9. A sequence valve 7 is provided on an oil passage 26 branched from the expansion side oil passage 271 on the operating valve 12 side from the check valve 8. An electromagnetic change-over valve 6 is provided on a supply oil passage 29 supplied with pressure oil through the sequence valve 7. A double acting boosting cylinder 5 is connected to output oil passages 241, 242 of the electromagnetic change-over valve 6. The boosting cylinder 5 outputs boosted pressure oil to the expansion side oil passage 272 on the opening and closing cylinder 4 side from the check valve 8.

7. 发明专利

JPH0681772A OUTPUT CONTROLLER FOR HYDRAULIC SHOVEL PUMP 失效
公开(公告)号：JPH0681772A
公开(公告)日：1994-03-22
申请号：JP23464492
申请日：1992-09-02
申请人： CATERPILLAR MITSUBISHI LTD
发明人： TANAKA MASAYUKI , MORIYA NAOYUKI , YOSHINO KAZUNORI , IGA MAKOTO , KOBAYASHI NOBUYUKI , TAMURA MANABU
IPC分类号： F04B49/06 , F04B49/00
摘要： PURPOSE:To provide a flow rate controller for a pump which can control the flow rate without being affected by pressure even if the pressure varies. CONSTITUTION:The flow rate correction value q1 is obtained by multiplying the difference (DPW) between the hydraulic output PW-H which is actually outputted from a hydraulic shovel and the hydraulic output PW-1 which is expected from a mathematical model M(S) by a proper coefficient K, an the flow rate correction value q2 is obtained by multiplying the difference ( W) between the actual hydraulic output PW-H and an aimed hydraulic pressure output PW-E by the characteristic of a compensator C(S), and the value obtained by subtracting q1 and q2 from the pump-demanded flow rate (per revolution) quo is set as the final flow rate instruction value qu, and inputted into the swash plate angle actuator of the pump.

8. 发明专利

JPH04202918A WIRED AND WIRELESS DOUBLE PURPOSE REMOTE CONTROL DEVICE 失效
公开(公告)号：JPH04202918A
公开(公告)日：1992-07-23
申请号：JP33336990
申请日：1990-11-29
申请人： CATERPILLAR MITSUBISHI LTD
发明人： TAMURA MANABU , MATOBA NOBUAKI , AWANO KATSUSUKE , MIKI MASATOSHI , TODA NAOSHI , TAKAHASHI KEIICHI
IPC分类号： E02F9/20 , E02F3/30 , G05D1/00 , H04Q9/00
摘要： PURPOSE:To accomplish stable communication and remote control by switching a remote control means between wireless system and wire system according to the status of an electric wave. CONSTITUTION:During the remote control by a normal electric wave, a cable 9 is not connected. In a cable connection discriminator 10a of 2 transmitter 1b side, a cable connection 'NO' decision signal 11a is sent out to a signal processor 2b, and a transmit signal (TX) from the signal processor 2b is connected to a high frequency amplifying portion 3b. During remote control by a wire system, the cable 9 is connected. A 'YES' decision signal 11a is sent out to the signal processor 2b and a transmit signal TX is connected to an input/output buffer 12a. A power supply receiving circuit 16 receives a power supply sent from a receiver 15b through the transmit/receive cable 9. In the receiver 15b, a power supply is supplied from a power supply circuit 17 through the transmit/receive cable 9 to the transmitter 1b side. Thus, stable communication can be ensured, and a machine can be remote-controlled smoothly.

9. 发明专利

JPH08314563A OPERATION FORCE ADJUSTING DEVICE AT OPERATION LEVER 失效
公开(公告)号：JPH08314563A
公开(公告)日：1996-11-29
申请号：JP24535595
申请日：1995-08-30
申请人： CATERPILLAR MITSUBISHI LTD
发明人： KUWABARA TOSHIO , TAMURA MANABU , SHIGEMITSU HIROAKI , NOSAKA HIROSHI
IPC分类号： E02F9/20 , B66C13/56 , G05G9/047
摘要： PURPOSE: To adjust the operation force of an operation lever corresponding to an individual operator. CONSTITUTION: The energizing force of an elastic device 14 for giving operation force to the operation lever 4 is adjusted by the vertical movement of an elastic device underside receiving base 30. The elastic device underside receiving base of back and forth is vertically moved by the driving of a first driving motor 35 and the elastic device underside receiving base of right and left is vertically moved by the driving of a second driving motor 36.

10. 发明专利

JPH10338948A FALL-PREVENTIVE DEVICE OF SLEWING CONSTRUCTION VEHICLE WITH WORKING ARM 失效
公开(公告)号：JPH10338948A
公开(公告)日：1998-12-22
申请号：JP14889697
申请日：1997-06-06
申请人： CATERPILLAR MITSUBISHI LTD
发明人： AWANO KATSUSUKE , KAJITA SHIGEO , TAMURA MANABU , NOSAKA HIROSHI
IPC分类号： E02F9/24 , B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To set an appropriate working range and prevent a slewing construction vehicle from falling, by detecting the position of the front end of a working arm, and the slewing angle and the inclined angle of the upper slewing body, and stopping the movement of the working arm when the horizontal distance between the front end of the working arm and the upper slewing body reaches at least the falling-limit distance. SOLUTION: The horizontal distance-operation means 20 of a controller 18 computes the horizontal distance between the front end of the working arm and the upper slewing body on the basis of signals from a distance-detection means 12. The horizontal falling-limit distance between the front end and the upper slewing body is computed by a limit distance operation means 22, on the basis of the slewing angle detected by a slewing angle-detection means 14 and the inclined angle detected by an inclined angle detection means 16. A distance comparison means 24 outputs a fall alarming signal when the horizontal distance reaches at least the falling-limit distance and an instruction means 28 for an actuator operation outputs an operation signal to an actuator control valve 26 in order to stop the movement excessing the falling-limit distance of the front end, on the basis of the fall alarming signal.

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