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公开(公告)号：US20140245729A1
公开(公告)日：2014-09-04
申请号：US14350611
申请日：2012-10-15
发明人： Takao Nanjo , Saburo Senoo , Naoki Goto
CPC分类号： E02F9/2217 , E02F9/2091 , E02F9/226 , E02F9/2285 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B13/06 , F15B21/14 , F15B2211/20546 , F15B2211/253 , F15B2211/7053 , F15B2211/7058 , F15B2211/88
摘要： A hydraulic control device includes: a recovery oil passage; a regenerative motor that rotates an output shaft of an engine in response to a supply of the hydraulic fluid and is driven to rotate by rotation of the output shaft of the engine; a regenerative oil passage for guiding return oil from a boom cylinder to the regenerative motor without passing the return oil through the recovery oil passage; a coupling oil passage that couples the recovery oil passage and the regenerative oil passage to each other; and a regeneration-side check valve that is provided on the coupling oil passage, and allows the hydraulic fluid to flow from the recovery oil passage toward the regenerative motor, and moreover restricts the hydraulic fluid from flowing from the regenerative motor toward the recovery oil passage.
摘要翻译： 液压控制装置包括：回收油通道; 再生电动机，其响应于液压流体的供给而使发动机的输出轴旋转，并且通过发动机的输出轴的旋转被驱动而旋转; 再生油路，其将返回油从动臂缸引导到再生电动机，而不使回油通过回收油路; 将回油路与再生油路连结的联轴器油路; 以及再生侧止回阀，其设置在联接油路上，并且允许液压流体从回收油路向再生马达流动，并且还限制液压流体从再生马达流向回收油路 。
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公开(公告)号：US09803339B2
公开(公告)日：2017-10-31
申请号：US14350611
申请日：2012-10-15
发明人： Takao Nanjo , Saburo Senoo , Naoki Goto
CPC分类号： E02F9/2217 , E02F9/2091 , E02F9/226 , E02F9/2285 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B13/06 , F15B21/14 , F15B2211/20546 , F15B2211/253 , F15B2211/7053 , F15B2211/7058 , F15B2211/88
摘要： A hydraulic control device includes: a recovery oil passage; a regenerative motor that rotates an output shaft of an engine in response to a supply of the hydraulic fluid and is driven to rotate by rotation of the output shaft of the engine; a regenerative oil passage for guiding return oil from a boom cylinder to the regenerative motor without passing the return oil through the recovery oil passage; a coupling oil passage that couples the recovery oil passage and the regenerative oil passage to each other; and a regeneration-side check valve that is provided on the coupling oil passage, and allows the hydraulic fluid to flow from the recovery oil passage toward the regenerative motor, and moreover restricts the hydraulic fluid from flowing from the regenerative motor toward the recovery oil passage.
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公开(公告)号：US09790659B2
公开(公告)日：2017-10-17
申请号：US14775256
申请日：2014-02-27
发明人： Naoki Sugano , Takao Nanjo , Shota Oguma , Satoshi Maekawa , Koji Ueda
CPC分类号： E02F3/425 , E02F3/32 , E02F9/2239 , E02F9/2242 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B13/06 , F15B2211/20546 , F15B2211/20576 , F15B2211/30565 , F15B2211/30595 , F15B2211/45 , F15B2211/50536 , F15B2211/7135 , F15B2211/7142
摘要： Provided is a hydraulic shovel capable of moving a boom, an arm, and a bucket at respective adequate speeds even during complex operations thereof, without a significant pressure loss. This hydraulic shovel includes: a first pump (31) connected to a boom actuator (24) and a bucket actuator (28); a second pump (32) connected to an arm actuator (26) and the boom actuator (24); a third pump (33) connect to the arm actuator (26); a boom control valve (54) interposed between the first pump (31) and the boom actuator (24); an arm control valve (56) interposed between the second pump (32) and the arm actuator (26); a bucket control valve (58) interposed between the first pump (31) and the bucket actuator (28); a boom merging valve (55) for speed increase interposed between the second pump (32) and the boom actuator (24); and an arm merging valve (57) for speed increase interposed between the third pump (33) and the arm actuator (26).
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公开(公告)号：US09802600B2
公开(公告)日：2017-10-31
申请号：US14914544
申请日：2014-08-20
发明人： Takao Nanjo , Koji Yamashita
CPC分类号： B60W10/26 , B60K6/12 , B60K6/20 , B60K6/485 , B60K7/0015 , B60K17/10 , B60K25/02 , B60K2025/026 , B60W10/06 , B60W20/00 , B60W20/10 , B60W2300/17 , B60W2710/0677 , B60Y2200/41 , B60Y2200/412 , B60Y2200/92 , B60Y2300/91 , H02J7/1438 , Y02T10/6208 , Y02T10/6226 , Y02T10/6282 , Y02T10/7258 , Y10S903/93
摘要： In a power control device, when the necessary power is greater than an upper limit value and either the integral power value or the duration time of an assist provided by an electric storage device during a continuous assist by the electric storage device exceeds a predetermined first threshold value, a controller performs a first control of reducing an assist power by the electric storage device to a value smaller than an assist power for the regular control and greater than zero. Further, when the necessary power is greater than the upper limit value and either the integral power value or the duration time exceeds a predetermined second threshold value greater than the first threshold value, the controller performs a second control of setting the assist power to zero.
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公开(公告)号：US11131077B2
公开(公告)日：2021-09-28
申请号：US16650558
申请日：2018-06-12
发明人： Takao Nanjo
IPC分类号： E02F9/12 , E02F9/22 , F15B11/028
摘要： A hydraulic system is capable of improving the acceleration performance of a slewing motor and suppressing an increase in the flow rate of hydraulic fluid supplied to the slewing motor. The hydraulic system includes a slewing speed sensor that detects a slewing speed of a slewing body and a controller that controls a slewing motor capacity, which is a capacity of the slewing motor. The controller controls the slewing motor capacity so as to make the slewing motor capacity when the slewing speed is in a low speed range be greater than the slewing motor capacity when the slewing speed is in a high speed range.
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