专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003130002A DEVICE OF CONTROLLING HYDRAULICALLY OPERATED INSTRUMENT 审中-公开
公开(公告)号：JP2003130002A
公开(公告)日：2003-05-08
申请号：JP2001329236
申请日：2001-10-26
申请人： AICHI CORP KK
发明人： MOROTA TAKASHI , NAKAZAWA SHUNICHI , NAKAYAMA TAKASHI , YOSHIDA SEIO
IPC分类号： F15B11/00
摘要： PROBLEM TO BE SOLVED: To optionally set up both of an energy-saving mode and a response mode. SOLUTION: A controlling device comprises an outlet 35 for low pressured oil, a pressured oil booster B, an outlet 34 for high pressured oil taking out amplified pressured oil from the pressured oil booster, a booster/attachment changing valve 32 selectively supplying pressured oil of a pressured oil supplying source to the outlet for low pressured oil and pressured oil booster, a booster operating lever 42, a booster/attachment changing switch 41, a controller 40 performing operating control of the pressured oil booster and booster/attachment changing valve, and a mode changing switch 43 selectively setting the energy- saving mode and response mode. When the booster/attachment changing switch 41 is operated to a side in which pressured oil is supplied to the pressured oil booster, pressured oil supply is not performed to the pressured oil booster in the energy-saving mode, but it is performed to the pressured oil booster in the response mode.

2. 发明专利

JP2002242905A DRIVING CIRCUIT FOR HYDRAULIC TOOL 失效
公开(公告)号：JP2002242905A
公开(公告)日：2002-08-28
申请号：JP2001041893
申请日：2001-02-19
申请人： AICHI CORP KK , IZUMI PROD CO
发明人： NAKAYAMA TAKASHI , TSUKIOKA TARO , KIDO HIROAKI
IPC分类号： B23Q5/06 , F15B11/028 , F16K1/14 , F16K15/04
摘要： PROBLEM TO BE SOLVED: To prevent malfunction of a hydraulic tool by leak of an operation oil without interrupting a normal operation of the hydraulic tool. SOLUTION: A leak valve 60 is provided in a connecting oil passage 111 connecting a hydraulic supply portion 1 having a hydraulic pump 3, with a clamp tool 90 driven by an oil pressure supplied from the hydraulic supply portion 1. The leak valve 60 operates to open an oil passage 113 connected to an oil tank 5 from a connecting oil passage 111, when a pressure in the connecting passage 111 is smaller than a minimum pressure required for the clamp tool 90 to be driven, and to close operation of the oil passage 113, when the pressure in the connecting oil passage 111 is not less than the minimum pressure required for the clamp tool 90 to be driven.

3. 发明专利

JP2002156039A SAFETY DEVICE OF HYDRAULIC TRAVELING VEHICLE 失效
公开(公告)号：JP2002156039A
公开(公告)日：2002-05-31
申请号：JP2000329075
申请日：2000-10-27
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , NAKAJIMA NORIYOSHI , NAKAYAMA TAKASHI , KAMEI KENJI , TAKAHASHI SHIGEO , KOBAYASHI FUTOSHI , MOMOSE FUMIYA , IINUMA AKIHIKO , ESHITA TAKAYUKI , OIKAWA TOMOHARU , MURAYAMA KOICHI , SUDA MOTOAKI
IPC分类号： B66F9/075 , B66F9/22 , F16H59/66 , F16H61/18 , F16H61/40 , F16H61/42 , F16H61/421
摘要： PROBLEM TO BE SOLVED: To provide a safe hydraulic traveling vehicle prevented from running downhill even if a speed range is erroneously selected in a steep slope. SOLUTION: An operating device 20 of the hydraulic traveling vehicle is provided with a speed range selection switch 22 for selecting a traveling speed range for operation, and a control unit 30 outputs a command signal to an engine speed control circuit 41 and a motor capacity select valve 42 according to a speed range signal input from the switch 22 to change the hydraulic pump rotational frequency and the capacity of a traveling motor, and sets the speed range. The control unit 30 has a speed range regulating circuit 32, which regulates setting of a speed range where the capacity of the traveling motor is a small capacity (low torque state) when an angle of inclination of a car body inputted from an inclination angle detector 70 is higher than a designated inclination angle and sets the speed range with a large capacity (high torque state).

4. 发明专利

JPH11180698A SAFETY DEVICE FOR WORK MEANS 失效
公开(公告)号：JPH11180698A
公开(公告)日：1999-07-06
申请号：JP35474197
申请日：1997-12-24
申请人： AICHI CORP KK
发明人： NAKAYAMA TAKASHI
IPC分类号： B66F9/22 , B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To stop the operation of a hydraulic actuator by relieving a hydraulic oil by a suitable relief pressure when the operation of a work means is forcibly stopped during the operation of the work means to be driven by the hydraulic actuator. SOLUTION: An electromagnetic proportional relief valve R capable of changing relief pressure of hydraulic oil is provided in a supply oil passage L for connecting a hydraulic pump P to respective control valves 31 to 34. The relief pressure of the relief valve R is set to oil pressure higher than a hydraulic oil pressure by a specified pressure by a relief valve controller 27 on the basis of the hydraulic oil pressure stored in an hydraulic oil pressure storing unit 26. Moreover, the hydraulic oil pressure required to drive a hydraulic actuator such as a hydraulic expansion cylinder according to the operating state such as the derricking angle of the boom, detected by the detecting sensor 20 is stored in the hydraulic oil storing unit 26.

5. 发明专利

JPH1017275A SLIDINGLY MOVABLE DEVICE OF EXTENSIBLE-CONTRACTIBLE BOOM 失效
公开(公告)号：JPH1017275A
公开(公告)日：1998-01-20
申请号：JP19002996
申请日：1996-07-01
申请人： AICHI CORP KK
发明人： NAKAYAMA TAKASHI
IPC分类号： B66C23/697 , B66F9/06 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To eliminate a clearance between slider devices and respective booms, and reduce looseness by connecting respective oil chambers of respective cylinders of the slider devices positioned in an upper part (a lower part) of a left side surface of an inner boom and a lower part (an upper part of a right side surface to each other in a diagonal line shape by hydraulic pipe lines. SOLUTION: Among slider devices 45 to 48, oil chambers of the slider devices arranged on a diagonal line in an inner boom 42 are connected to each other by hydraulic pipe lines 53 and 54, and when pressing force is applied to a slider 49, a slider 57 is pressed in the outward direction of the inner boom 42 by oil pressure to the slider device 48 of a diagonal position. When the inner boom 42 rotates in the rightward direction by the torsional moment, a slider 49 is pressed against an inside surface of an outer boom 41, and oil in the oil chambers of the slider device 45 is passed through the hydraulic pipe 53 by pressure, and the slider 57 is brought into contact with the inside surface of the outer boom 41, and the slider device 48 of the inner boom 42 is pushed back in the leftward direction, and the torsional moment and inverse directional force are imparted to the inner boom 42, and an increase in a twist can be prevented.

6. 发明专利

JPH11130386A HYDRAULIC OIL REPLENISHING DEVICE FOR LEVELING DEVICE 失效
公开(公告)号：JPH11130386A
公开(公告)日：1999-05-18
申请号：JP29678597
申请日：1997-10-29
申请人： AICHI CORP KK
发明人： NAKAYAMA TAKASHI
IPC分类号： B66F9/06 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic oil replenishing device capable of surely replenishing hydraulic oil irrespective of a replenishing operation time. SOLUTION: When a replenishing switch 19 is operated, a work signal is outputted from a timer 20 to a replenishing valve 60 corresponding to a replenishing operation to move the replenishing valve 60 right, and hydraulic oil is supplied through the replenishing valve 60 and an oil passage 34 to an oil passage 52a. However, when an operation time by the replenishing switch 19 is lower than a specified time, a work signal is outputted only for the specified time. Thus, a situation is prevented, where because of too short operation time, a check valve 61 is opened to cause the hydraulic oil in the route 52a to flow out, the check valve is closed before actual hydraulic oil replenishing is started, and no hydraulic oil is supplied into the oil passage 52a. Therefore, hydraulic oil is surely supplied.

7. 发明专利

JPH07215681A SAFETY DEVICE OF BOOM WORKING VEHICLE 失效
公开(公告)号：JPH07215681A
公开(公告)日：1995-08-15
申请号：JP2752394
申请日：1994-01-31
申请人： AICHI CORP KK
发明人： NAKAYAMA TAKASHI
IPC分类号： E02F9/24 , B66C23/90 , B66F9/24 , B66F11/04
摘要： PURPOSE:To regulate the operation of a boom only within such a range as no interruption is given to some work to prevent a boom working vehicle from being turned over. CONSTITUTION:This safety device permits work to be continued without regulating the operation of a boom 12 even if a regulating reaction condition, (or a condition where one contact reaction is below the first prescribed value and the other contact reaction is below the second prescribed value which is smaller than the first prescribed value) occurs in two rear jacks J3, J4 when the revolving position of the boom 12 is within a rearward range (a rearer range than a connecting line between jacks J1, J2 mounted in the revolving center of the boom and on the right and left of a vehicle body front). When an excavation device 22 is hung down, the boom 12 is not regulated even if the regulating reaction condition occurs between the jacks. In any other case, the operation of the boom 12 is regulated when the regulating reaction condition occurs, so it is possible to prevent a vehicle body from being turned over.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式