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1. 发明专利

JP2003193520A BOOM WORK VEHICLE 审中-公开
公开(公告)号：JP2003193520A
公开(公告)日：2003-07-09
申请号：JP2001401128
申请日：2001-12-28
申请人： AICHI CORP KK
发明人： KAMEI KENJI , NAKAZAWA SHUNICHI , ISHII TADASHI , MIZUGUCHI HIROAKI , YOSHIDA SEIO
IPC分类号： E02F9/22 , B66C23/00 , B66F9/24 , B66F11/04 , E02F3/39 , E02F3/43 , E21B7/00
摘要： PROBLEM TO BE SOLVED: To provide a boom work vehicle capable of preventing deviation of actual construction position and locus of a work device controlled by a vertical travel controller and increase of the deviation due to repeated reciprocating operation and repeated interruption and restart during work in vertical travel work of the boom work vehicle. SOLUTION: A linear travel controller 70 has a memory 71 capable of storing a home position when operating the linear travel controller 70 to use a vertical straight line passing the home position as a reference line when moving the work device vertically using the linear travel controller 70. Even if the construction position does not coincide with the reference line, minute adjustment of the vertical travel reference line can be performed by a construction position minute adjustment lever 24a. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2002037600A SAFETY GEAR FOR WORKING VEHICLE 失效
公开(公告)号：JP2002037600A
公开(公告)日：2002-02-06
申请号：JP2000225043
申请日：2000-07-26
申请人： AICHI CORP KK
发明人： NAKAZAWA SHUNICHI
IPC分类号： B66F9/24 , B66F11/04 , F15B20/00
摘要： PROBLEM TO BE SOLVED: To provide a safety gear for a working vehicle, ensuring accurate detection of the malfunction of an operating control circuit for a proportional solenoid valve. SOLUTION: A proportional valve operating control circuit is a control circuit for outputting a control current to the proportional solenoid valve 41 to control a valve opening and control the operation of an operating device. A current control circuit 311 sets a target control current corresponding to a command signal, and a switch circuit 312 regulates power to be supplied from a power supply B in accordance with the set signal and outputs the control current to the proportional solenoid valve 41. A return current from the proportional solenoid valve 41 is returned to a ground GND via a line 415. An output circuit and a return circuit are provided with an output current detecting circuit 313 and a return current detecting circuit 314, respectively, the current control circuit 311 outputting an alarm signal for alarming operation when at least one of an output current value and a return current value detected is different from the target control current value.

3. 发明专利

JP2000355498A REMOTE CONTROL DEVICE AND OPERATION DEVICE 失效
公开(公告)号：JP2000355498A
公开(公告)日：2000-12-26
申请号：JP17090899
申请日：1999-06-17
申请人： AICHI CORP KK , BAB HITACHI IND CO
发明人： MOROTA TAKASHI , NAKAZAWA SHUNICHI , UMEYAMA MASAHIKO
IPC分类号： B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To obtain a remote control device stopping the operation of the operation means of a boom surely and not requiring the ON state of the electric source of an upper operation device. SOLUTION: An upper operation device 16 sends an operation signal for controlling the operation of an operation device 17 and an upper CPU 32 sends a luminous control signal predetermined responding to the operation signal from the upper operation device 16. A luminosity 33 emits a light signal controlled based on the liminous control signal sent from the upper CPU 32 and also emits the light signal continuously when the stop operation of a stop switch 35 is carried out. A light receiver 42 received the light signal from the luminosity 33 sends the operation control signal to a lower CPU 43 for carrying out the operation control of the operation device 17. A continuous luminous detection device 44 and operation stop device 45 stop the operation device 17, regardless of the operation control of the operation device 17 by the lower CPU 43 at the receiving time of the light signal emitted continuously.

4. 发明专利

JP2002326799A HYDRAULIC FLUID FEEDER OF BOOM WORKING VEHICLE 有权
公开(公告)号：JP2002326799A
公开(公告)日：2002-11-12
申请号：JP2001329237
申请日：2001-10-26
申请人： AICHI CORP KK
发明人： KANAZAWA TAKAO , SEKI HIROAKI , NAKAZAWA SHUNICHI , YOSHIDA SEIO
IPC分类号： B66F9/24 , B66F9/22 , B66F11/04 , F15B11/00
摘要： PROBLEM TO BE SOLVED: To regulate a hydraulic fluid flow discharged from a hydraulic pump to a necessary minimum flow with less excess flow. SOLUTION: This hydraulic fluid feeder comprises a first flow set circuit which, based on the detected position of a working stand relative to a body and the operating amounts of operating levers 51 to 53 obtains the flows of hydraulic fluid fed to hydraulic actuators 24, 31, and 23 and using the sum of the flows as a first flow, a second flow set circuit 72 which, based on a detected load acting on a boom and the detected operating amounts of operating levers 51 to 53 obtains the flows of hydraulic oil fed to hydraulic actuators and using the sum of the flows as a second flow, a selection circuit 73 which uses the smaller value of these both flows as a main flow, an overall flow calculation circuit 75 and target flow set circuit 76 for setting a target flow based on the main flow, and an electric motor drive control circuit 77 and an electric motor M for performing the rotational control of the hydraulic pump P so that the flow of hydraulic fluid discharged from the hydraulic pump P approximately attains the target flow.

5. 发明专利

JP2002167195A ABNORMAL CONDITION DETECTOR FOR BOOM DEVICE 失效
公开(公告)号：JP2002167195A
公开(公告)日：2002-06-11
申请号：JP2000369421
申请日：2000-12-05
申请人： AICHI CORP KK
发明人： KAMEI KENJI , NAKAZAWA SHUNICHI , MIZUGUCHI HIROAKI
IPC分类号： B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide an abnormal condition detector capable of properly determining whether an axial force detector detecting a loading working on a freely derricking boom is operated in a normal range or not. SOLUTION: A detection signal from the axial force detector 24 installed to a derricking cylinder 52 derricking the boom is inputted into a control unit 30. When a start-up inspection switch 11 is operated, the control unit 30 operates a derricking control valve 41 and a relief pressure selector valve 42 while housing the boom on a vehicle body for applying a first oil pressure to the derricking cylinder 52. In this time, it is determined whether an axial force detection value detected by the axial force detector 25 is within a proper range or not. Subsequently, in the similar way, a second oil pressure is applied, and it is determined whether the axial force detection value is within the proper range or not. If these values are not within the proper range, a warning is give by an alarm 80.

6. 发明专利

JP2002013503A HYDRAULIC SUPPLY SYSTEM FOR WORKING VEHICLE 失效
公开(公告)号：JP2002013503A
公开(公告)日：2002-01-18
申请号：JP2000195721
申请日：2000-06-29
申请人： AICHI CORP KK
发明人： OHIRA AKIHIKO , NISHITANI AKIRA , YASUDA KIYOSHI , MOROTA TAKASHI , KUWABARA YOSHINORI , NAKAZAWA SHUNICHI , YOSHIDA SEIO
IPC分类号： B66F9/22 , B66F9/24 , F15B11/02
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic supply system that can work under low noise or exhaust-free condition for a working vehicle as occasion demands. SOLUTION: This hydraulic supply system is equipped with a working vehicle (or aerial platform) 1 and a hydraulic supply vehicle 20. The working vehicle 1 comprises a working device operated by hydraulic actuators 7, 8, and 9 and a first hydraulic pump P1 supplying a working hydraulic pressure to the hydraulic actuators. The working device is placed on a vehicle 2 that can drive and has an engine 2. The pump 1 is driven by the engine. The hydraulic supply vehicle 20 comprises a second hydraulic pump 23 driven by an electric motor 24 on a vehicle that can drive. The first pump 1 pressurizes the working fluid inside of an oil tank OT in the working vehicle 1 and supplies the working fluid to the hydraulic actuators. Furthermore, the inlet side of the second hydraulic pump 23 is connected to the oil tank OT, and the outlet side of the second pump 23 can be connected to the hydraulic actuators via a working control valve 15. Accordingly the second pump P2 can also supply the working fluid from the oil tank OT to the actuators.

7. 发明专利

JP2001031390A OPERATION STOP DEVICE FOR WORKING VEHICLE 失效
公开(公告)号：JP2001031390A
公开(公告)日：2001-02-06
申请号：JP20994099
申请日：1999-07-23
申请人： AICHI CORP KK
发明人： MOROTA TAKASHI , UMEYAMA MASAHIKO , NAKAZAWA SHUNICHI
IPC分类号： B66F9/24 , B66C15/00 , B66C23/88 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To stop a boom operation even when the boom operation through a CPU is difficult to be stopped. SOLUTION: A boom operating device 30 comprises a CPU 47 controlling the operation of actuators 13, 17, 19, 37, and 73 according to the operating signals of an operation lever L1, an operation stop switch 31 operated when the operation of the actuators 13, 17, 19, 39 and 73 is stopped, a switch 49 electrically connecting or disconnecting between the CPU 47 and operating control valves 57 and 65 and between the CPU 47 and an ILSV 73, and a work stop circuit 51 opening the switch 49 in connection with the work stop operation by the operation stop switch 31 to disconnect the electrical connection between the CPU 47 and operating control valves 57 and 65 and between the CPU 47 and ILSV 73 in order to stop the operation of the actuators 13, 17, 19, 39, and 73.

8. 发明专利

JP2003221194A ELECTRIC DRIVE WORK VEHICLE 审中-公开
公开(公告)号：JP2003221194A
公开(公告)日：2003-08-05
申请号：JP2002023901
申请日：2002-01-31
申请人： AICHI CORP KK
发明人： MOROTA TAKASHI , NAKAZAWA SHUNICHI , YOSHIDA SEIO
IPC分类号： B66F9/075 , B66F9/22 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide a constitution which can ensure a loading space while it is equipped with a charger, in a vehicle for work of electric drive type driving by an electric motor an oil hydraulic pump operating a hydraulic actuator of a work device by supplying a pressure of oil thereto. SOLUTION: This electric drive high lift work vehicle 1 has on a car body a boom type high lift work device operated by a hydraulic actuator 50 of a turn motor 51, a boom hoisting cylinder 52, etc., to operate the work device by supplying a pressure of operating oil to this hydraulic actuator from an oil hydraulic pump driven by an electric drive by electric power of a power battery 42, the high lift work vehicle 1 is constituted by arranging a hydraulic oil supply unit 43 comprising the electric motor and the oil hydraulic pump in a sideward lower part of the car body and arranging an electric power supply unit 42 comprising a motor control device and a charger on an outrigger box of an outrigger jack 60. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2003192297A AUTOMATIC INSPECTION DEVICE OF HIGH LIFT WORK VEHICLE 审中-公开
公开(公告)号：JP2003192297A
公开(公告)日：2003-07-09
申请号：JP2001401129
申请日：2001-12-28
申请人： AICHI CORP KK
发明人： OHIRA AKIHIKO , MOROTA TAKASHI , NAKAZAWA SHUNICHI , MIZUGUCHI HIROAKI
IPC分类号： B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide an automatic inspection device for a high lift work vehicle capable of automatically executing inspection of sensors when predetermined conditions for executing inspection are satisfied. SOLUTION: The automatic inspection device 100, having a boom 5 arranged on a vehicle body so that the boom 5 can freely execute operations including derricking, expanding and contracting, and rotating, is equipped with a derricking sensor 30 for detecting a derricking angle of the boom 5, a telescopic sensor 31 for detecting the expanding amount of the boom 5, a rotation sensor 32 for detecting the rotation angle of the boom 5, and an inspection controller 80 for executing inspection operation of each of the sensors 30 to 32. When the inspection controller 80 makes a judgement that operation of the boom 5 satisfies the predetermined conditions for executing inspection of each of the sensors 30 to 32, automatic inspection of each of the sensors 30 to 32 is executed. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2003098002A LOAD DETECTION DEVICE 审中-公开
公开(公告)号：JP2003098002A
公开(公告)日：2003-04-03
申请号：JP2001296432
申请日：2001-09-27
申请人： AICHI CORP KK
发明人： OHIRA AKIHIKO , MOROTA TAKASHI , NAKAZAWA SHUNICHI
IPC分类号： G01G23/01 , G01G3/13 , G01G19/12 , H03M1/18
摘要： PROBLEM TO BE SOLVED: To provide a load detection device capable of highly accurate load detection even if a voltage supplied to a load cell or an A/D converter is changed, and enabling an easy maintenance work. SOLUTION: This load detection device 30 comprises the load cell 70 operated by receiving a power supply, for outputting an analog signal of a voltage corresponding to a received load, an amplifier 71 for amplifying the analog signal, an A/D converter reference power source 35 for outputting a first reference voltage, the A/D converter 39 for converting the analog signal outputted from the amplifier 71 into a digital signal based on the first reference voltage, and an offset-gain adjusting circuit 77 for detecting the voltage from an A/D converter reference power source 35, and performing gain adjustment of the amplifier 71 corresponding to the fluctuation quantity of the voltage so that, when the voltage is fluctuated from the first reference voltage, the value of the digital signal converted by the A/D converter 39 becomes the same value as the value of the digital signal when the first reference voltage is applied to the A/D converter 39.

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