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1. 发明公开

EP0874090A1 HYDRAULIQUE DRIVE DEVICE 失效
标题翻译： HYDRAULISCHE ANTRIEBSVORRICHTUNG
公开(公告)号：EP0874090A1
公开(公告)日：1998-10-28
申请号：EP97908552.9
申请日：1997-03-31
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TANAKA, Sotaro , YASUDA, Gen , OCHIAI, Masami , NOZAWA, Yusaku , KATO, Hideyo
IPC分类号： E02F9/22 , F15B11/02
CPC分类号： E02F9/2296 , E02F9/2242 , E02F9/2292
摘要： Hydraulic pumps (3a, 3b) are connected to main lines (105, 116, 107) through a delivery line (102) and a supply line (100). Branch portions (150A, 150C, 150E) include flow control valves (15, 17, 19) for allowing a hydraulic fluid to flow from the hydraulic pumps (3a, 3b) toward hydraulic cylinders (5a, 5b, 6, 7). A hydraulic reservoir (2) is connected to main lines (115, 106, 117) through a reservoir line (103) and a drain line (101). Branch portions (151A, 151C, 151E) include flow control valves (16, 18, 20) for allowing a hydraulic fluid to flow from the hydraulic cylinders (5a, 5b, 6, 7) toward the hydraulic reservoir (2). A line (104) branched from the delivery line (102) includes a bypass valve (21) for supplying the hydraulic fluid delivered from the hydraulic pumps (3a, 3b) to the supply line (100) at a desired flow rate and returning the remaining hydraulic fluid to the hydraulic reservoir (2).
摘要翻译：液压泵（3a，3b）通过输送管线（102）和供应管线（100）连接到主管线（105,116,107）。分支部分（150A，150C，150E）包括用于允许液压流体从液压泵（3a，3b）流向液压缸（5a，5b，6,7）的流量控制阀（15,17,19）。液压储存器（2）通过储存器管线（103）和排出管线（101）连接到主管线（115,106,117）。分支部分（151A，151C，151E）包括用于允许液压流体从液压缸（5a，5b，6,7）流向液压储存器（2）的流量控制阀（16,18,20）。从输送管线（102）分支的管线（104）包括旁通阀（21），用于以期望的流量将从液压泵（3a，3b）输送的液压流体供应到供给管线（100）剩余的液压流体到液压储存器（2）。

2. 发明授权

EP0799979B1 ENGINE COOLER AND CONSTRUCTION MACHINE 失效
标题翻译：发动机冷却器和建筑机械
公开(公告)号：EP0799979B1
公开(公告)日：2004-07-21
申请号：EP96935365.5
申请日：1996-10-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： FUNABASHI, Shigehisa , TAKADA, Yoshihiro , WATANABE, Masatoshi , SHIMODE, Shinichi , TANITO, Yoshio , TANAKA, Sotaro , KANEKO, Zenji , HIRAMI, Ichiro , TAKISHITA, Toshio , MIHARA, Shinichi
IPC分类号： F04D17/16 , F01P5/02 , F01P11/10 , B60K11/04 , B60K11/08
CPC分类号： E02F9/0866 , B60K11/04 , B60K11/08 , F01P5/02 , F01P11/10 , F01P2001/005 , F04D17/162 , F04D29/582 , F04D29/664

3. 发明授权

EP0874090B1 HYDRAULIQUE DRIVE DEVICE 失效
标题翻译：液压驱动装置
公开(公告)号：EP0874090B1
公开(公告)日：2004-01-14
申请号：EP97908552.9
申请日：1997-03-31
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TANAKA, Sotaro , YASUDA, Gen , OCHIAI, Masami , NOZAWA, Yusaku , KATO, Hideyo
IPC分类号： E02F9/22 , F15B11/02
CPC分类号： E02F9/2296 , E02F9/2242 , E02F9/2292
摘要： Oil hydraulic pumps (3a, 3b) are connected to main pipe lines (105, 116, 107) through a delivery pipe line (102) and a feed pipe line (100). Branches (150A, 150C, 150E) are provided with flow control valves (15, 17, 19), which permit a pressure oil to flow to hydraulic oil cylinders (5a, 5b, 6, 7) from the oil hydraulic pumps (3a, 3b). A pressure oil tank (2) is connected to the main pipe lines (105, 116, 107) through a tank pipe line (103) and a discharge pipe line (101). Branches (151A, 151C, 151E) are provided with flow control valves (16, 18, 20), which permit a pressure oil to flow to the pressure oil tank (2) from the hydraulic cylinders (5a, 5b, 6, 7). A pipe line (104) branched from the delivery pipe line (102) is provided with a bypass valve (21), which serves to feed a desired amount of an oil delivered from the oil hydraulic pumps (3a, 3b) to the feed pipe line (100) and return the remainder of the oil to the pressure oil tank (2).
摘要翻译：油压泵（3a，3b）通过输送管路（102）和供给管路（100）与主管路（105,116,107）连接。分支（150A，150C，150E）设置有流量控制阀（15,17,19），该流量控制阀允许压力油从液压泵（3a，5b，6,7）流向液压油缸（5a，5b，6,7）图3b）。压力油箱（2）通过油箱管路（103）和排出管路（101）与主管路（105,116,107）连接。分支（151A，151C，151E）设置有流量控制阀（16,18,20），其允许压力油从液压缸（5a，5b，6,7）流到压力油箱（2）。从输送管路（102）分支的管路（104）设置有旁通阀（21），其用于将从油压泵（3a，3b）输送的期望量的油供给至供给管（100），并将余下的油返回压力油箱（2）。

4. 发明公开

EP0799979A1 ENGINE COOLER AND CONSTRUCTION MACHINES 失效
标题翻译：宝马公司
公开(公告)号：EP0799979A1
公开(公告)日：1997-10-08
申请号：EP96935365.5
申请日：1996-10-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： FUNABASHI, Shigehisa , TAKADA, Yoshihiro , WATANABE, Masatoshi , SHIMODE, Shinichi , TANITO, Yoshio , TANAKA, Sotaro , KANEKO, Zenji , HIRAMI, Ichiro , TAKISHITA, Toshio , MIHARA, Shinichi
IPC分类号： F01P5/02 , F01P5/04 , F01P5/06 , B60K11/04
CPC分类号： E02F9/0866 , B60K11/04 , B60K11/08 , F01P5/02 , F01P11/10 , F01P2001/005 , F04D17/162 , F04D29/582 , F04D29/664
摘要： First cooling air (50) enters an engine room (1) through a cooling air inlet port (7a) from the exterior of the engine room (1), and is throttled by a suction tube (8a) after passing heat exchangers such as an intercooler (6a), an oil cooler (6b) and a radiator (6c), followed by entering a centrifugal fan (4). The first cooling air (50) is then blown off toward an outer circumference of the centrifugal fan (4). Second cooling air enters the engine room (1) through cooling air inlet ports (7b, 7b) from the exterior of the engine room (1), and flows around an engine (5), various electric equipments such as an alternator (10), and an oil pan (14) while cooling them. The second cooling air is then throttled by a suction tube (8b) before entering the centrifugal fan (4), and blown off toward the outer circumference of the centrifugal fan (4). Two streams of the first and second cooling air (50, 51) are discharged to the exterior through an exhaust port (9). This arrangement enhances the degree of sealing on the engine (5) side to reduce noise, and improves the effect of cooling the electric equipments (10) for higher reliability of the electric equipments (10).
摘要翻译：第一冷却空气（50）通过来自发动机室（1）的外部的冷却空气入口（7a）进入发动机室（1），并且在通过热交换器中间冷却器（6a），油冷却器（6b）和散热器（6c），然后进入离心式风扇（4）。然后将第一冷却空气（50）吹向离心式风扇（4）的外周。第二冷却空气通过来自发动机室（1）的外部的冷却空气入口（7b，7b）进入发动机室（1），并且在发动机（5）周围流动，诸如交流发电机（10）等各种电气设备，和油盘（14）同时冷却它们。然后在进入离心风扇（4）之前，第二冷却空气被吸入管（8b）节流，并且向离心式风扇（4）的外周吹出。第一和第二冷却空气（50,51）的两股流经排气口（9）排出到外部。由此，能够提高发动机（5）侧的密封度，降低噪音，提高电气设备（10）的冷却效果，提高电力设备（10）的可靠性。

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