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公开(公告)号：EP1164297A4
公开(公告)日：2003-04-16
申请号：EP01946922
申请日：2001-01-24
发明人： NAKATANI KENICHIRO , KANAI TAKASHI , TSURUGA YASUTAKA , KAWAMOTO JUNYA , HAMAMOTO SATOSHI , OKAZAKI YASUHARU , NAGAO YUKIAKI
CPC分类号： F15B11/167 , E02F9/22 , E02F9/2225 , E02F9/2232 , E02F9/226 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/05 , F15B11/165 , F15B2211/20553 , F15B2211/20584 , F15B2211/253 , F15B2211/30505 , F15B2211/30535 , F15B2211/30555 , F15B2211/3105 , F15B2211/3144 , F15B2211/31576 , F15B2211/324 , F15B2211/329 , F15B2211/355 , F15B2211/40507 , F15B2211/6054 , F15B2211/6055 , F15B2211/6346 , F15B2211/6355
摘要： A hydraulic driving device, comprising a pressure compensating valve in an LS system, wherein an actuator lock switching valve (50), allowing a drain line (52) and a pilot line (53) to communicate with each other when the valve is switched to position (C) and allowing pilot lines (51) and (53) to communicate with each other when the valve is switched to position (D), is provided therein, the pilot line (51) is connected to a delivery line (7) of a hydraulic pump (10), the pilot line (53) is connected to pressure receiving parts (28a, 28b) provided at the closing operation side end part of pressure compensating valves (21a, 21b), and the actuator lock switching valve (50) having a pressure receiving part (55) connected to the output side of a pilot lock switching valve (43) is switched in conjunction with the switching of the switching valve (43), whereby, even when the drive device contains a directional control valve of mechanical switching system or a directional control valve of mechanical switching system is added, the actuator can be locked with a simple structure so as to prevent an erroneous operation from occurring when the drive device is not operated during engine driving.
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公开(公告)号：EP2687635A4
公开(公告)日：2014-12-31
申请号：EP12757311
申请日：2012-03-12
发明人： KAWAMOTO JUNYA , MAEDA KOHEI
CPC分类号： F15B1/26 , E02F9/0883 , Y10T137/6881
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公开(公告)号：EP3112538A4
公开(公告)日：2017-11-08
申请号：EP14883398
申请日：2014-12-08
发明人： KOKURYOU OSAMU , KAWAMOTO JUNYA , UEDA MASAYA
CPC分类号： E02F9/0866 , B60K11/04 , B60Y2200/412 , E02F3/325 , E02F3/964 , F01P5/04 , F01P11/08 , F01P11/10 , F15B11/08
摘要： A heat exchanging device (19) includes a fame member (20) assembled having a square frame shape by using a lower frame (21) extending in a front and rear direction and mounted on a revolving frame (5), side frames (22, 23) extending to an upper side from both ends of the lower frame (21), and an upper frame (24) extending on an upper part of the side frames (22, 23). A cooling fan (17) is disposed in a state in which each of the blades (17B) enters into the frame member (20) from an engine side end surface (20A) with respect to the frame member (20). An oil cooler (28) and a radiator (30) are mounted on a mounting surface plate (25) on an opposite side to the engine (16) and interposing said cooling fan (17) at an interval from the cooling fan (17) with respect to the frame member (20). A flat plate shaped shroud (31) surrounding each of the blades (17B) of the cooling fan (17) and forming a fan accommodating chamber (32) among the frame member (20), the oil cooler (28), and the radiator (30) is mounted on the engine side end surface (20A) of the frame member (20).
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公开(公告)号：EP1707689A4
公开(公告)日：2011-04-06
申请号：EP04820673
申请日：2004-12-06
发明人： KAWAMOTO JUNYA , YAMADA KAZUYOSHI , TSURUGA YASUTAKA , ITOU KENJI
CPC分类号： E02F9/2275 , B66C23/84 , E02F9/006 , F16L27/093 , Y10T403/257
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公开(公告)号：EP1058010A4
公开(公告)日：2006-02-22
申请号：EP99961406
申请日：1999-12-27
发明人： TSURUGA YASUTAKA , KANAI TAKASHI , KAWAMOTO JUNYA , HAMAMOTO SATOSHI , OKAZAKI YASUHARU , NAGAO YUKIAKI
CPC分类号： E02F9/2225 , E02F9/2207 , E02F9/2285 , E02F9/2296 , F15B11/0406 , F15B11/162 , F15B11/165 , F15B2211/20553 , F15B2211/20584 , F15B2211/255 , F15B2211/30505 , F15B2211/30535 , F15B2211/3111 , F15B2211/3144 , F15B2211/31576 , F15B2211/50527 , F15B2211/5153 , F15B2211/6054 , F15B2211/63 , F15B2211/6313 , F15B2211/6316 , F15B2211/7135
摘要： A hydraulic drive device including a swing control system capable of accelerating it to a stationary state without any jerky swing operation at the time of starting of the swing operation, providing high energy efficiency, forming a stable swing system, and preventing a cost and space from increasing due to provision of additional circuits or complicated problem with circuit configuration from occurring, wherein a pump control device (18) is installed so as to control a discharge flow so that a pump discharge pressure becomes higher by a specified value than the max. load pressures of actuators (2 to 6), pressure compensating valves (12 to 16) are formed so that pressure differences between the discharge pressure of a hydraulic pump (1) and the max. load pressures of the actuators (2 to 6) are set as target compensating pressure differences, respectively, a load dependent characteristic which reduces the target compensating pressure differences when a load pressure rises is provided to the pressure compensating valve (12) of a swing section, and the load dependent characteristic is set so that a flow characteristic simulating the HP constant control of a swing motor can be obtained.
摘要翻译： 本发明提供一种液压驱动装置，该液压驱动装置具备：摆动控制系统，其能够在摆动动作开始时不晃动地进行摆动动作而加速至静止状态，能量效率高，形成稳定的摆动系统，并且能够防止成本和空间 由于提供附加电路而增加或者出现电路构造的复杂问题，其中安装泵控制装置（18）以便控制排放流量，使得泵排放压力变得比最大值大规定值。 致动器（2至6）的负荷压力，压力补偿阀（12至16）形成为使得液压泵（1）的排放压力与最大压力 将致动器（2至6）的负载压力分别设定为目标补偿压力差，当负载压力升高时减小目标补偿压差的负载依赖特性被提供给摆动部分的压力补偿阀（12） 并且负载依赖特性被设定为使得可以获得模拟回转马达的HP恒定控制的流量特性。
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公开(公告)号：EP2679727A4
公开(公告)日：2018-01-17
申请号：EP12749350
申请日：2012-02-10
发明人： KAWAMOTO JUNYA , MAEDA KOHEI , KAMAKURA KENTARO
CPC分类号： F15B1/26 , E02F3/325 , E02F9/0883 , E02F9/26 , G01F9/00 , Y10T137/8158
摘要： To provide a hydraulic oil tank capable of assuring strength at a gage installation part and bringing a gage close to a hole portion of an exterior cover while maintaining a predetermined clearance between the exterior cover and the hydraulic oil tank. A hydraulic oil tank (6) is mounted on a swing frame (2a) of an upperstructure (2) in a hydraulic excavator, has a side wall (6a) opposing an exterior cover (5) of the upperstructure (2) with a predetermined clearance (20) therebetween, and is made of synthetic resin and adapted to store hydraulic oil to be fed to hydraulic actuators. The hydraulic oil tank (6) has a gage (7) that enables a visual check on a level (8) of the hydraulic oil in the hydraulic oil tank (6) through a hole portion (5a) formed in the exterior cover (5). The gage (7) is installed in the side wall (6a) of the hydraulic oil tank (6), and has an internally-hollow protruding portion (7a) formed protruding in a direction toward the hole portion (5a) of the exterior cover (5) and a window portion (7b) comprised of a transparent member arranged at an end of the protruding portion (7a) and enabling the visual check on the level (8) of the hydraulic oil in the hydraulic oil tank (6).
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公开(公告)号：EP2840188A4
公开(公告)日：2016-03-02
申请号：EP12869914
申请日：2012-10-03
发明人： KOKURYO OSAMU , KAWAMOTO JUNYA , MIYAHARA YASUHIRO
CPC分类号： E02F9/0866 , E02F3/325 , E02F9/18 , F01N13/001 , F01N13/082 , F01N2590/08
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公开(公告)号：EP0877168A4
公开(公告)日：2000-09-20
申请号：EP97912461
申请日：1997-11-14
发明人： TSURUGA YASUTAKA , KANAI TAKASHI , KAWAMOTO JUNYA
CPC分类号： F15B11/05 , E02F9/2232 , E02F9/2285 , E02F9/2296 , F04B49/08 , F04B49/24 , F04B2203/0605 , F15B2211/20523 , F15B2211/20553 , F15B2211/253 , F15B2211/30535 , F15B2211/50536 , F15B2211/635 , F15B2211/71
摘要： A differential pressure PLS between a discharge pressure of a hydraulic pump (2) and a maximum load pressure on a plurality of actuators (3a-3c) is maintained at a target differential pressure ΔPLSref by a pump capacity control device (5). The target differential pressure ΔPLSref is modified in accordance with the revolution speed of an engine (1) by conducting to an operation drive unit (32) a differential pressure ΔPp across a restriction (50) provided in a discharge passage of a fixed pump (30). An unloading valve (80) comprises first and second auxiliary control pressure chambers (80e, 80f), to which the differential pressure ΔPp across the restriction (50) is conducted, and a target differential pressure ΔPun for the unloading valve (80) is also modified according to the modification of the target differential pressure ΔPLSref caused by the operation drive unit (32). Accordingly, a stable load sensing control can be performed without being affected by the engine revolution speed.
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公开(公告)号：EP2679728A4
公开(公告)日：2015-08-12
申请号：EP12749193
申请日：2012-02-10
CPC分类号： E02F9/0875 , E02F3/30 , E02F3/325 , E02F9/2275 , E02F9/2278 , F16M13/02 , Y10T137/6851
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公开(公告)号：EP2725150A4
公开(公告)日：2015-06-10
申请号：EP12801988
申请日：2012-06-18
CPC分类号： E02F9/123 , E02F3/30 , E02F3/325 , E02F3/384 , E02F9/0875 , E02F9/121 , E02F9/2275 , Y10S37/902
摘要： To provide a swing-type construction machine that can reduce force of working device pipes which is generated in accordance with swinging of a working device and presses against a side wall of a swing post. The present invention is configured such that a swing frame side holding body for holding a part of working device pipes 21, which is located at a side of a swing frame 2a, includes a first clamp 22 having a first stage holding portion that clamps one of the group of the working device pipes and a second stage holding portion that is arranged on a position lower than the first stage holding portion and clamps the other group of the working device pipes, while a swing post side holding body for holding a part of the working device pipes 21, which is located at a side of a swing post 6, includes a second clamp 24 having a first stage holding portion that clamps the group of the working device pipes that are clamped by the first stage holding portion of the first clamp 22 and a second stage holding portion that clamps the group of the working device pipes that are clamped by the second stage holding portion of the first clamp 22.
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