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1. 发明公开

EP3236326A1 SYSTEM FOR DIAGNOSING OIL PROPERTIES IN WORKING MACHINE 有权
标题翻译：用于诊断工作机油性质的系统
公开(公告)号：EP3236326A1
公开(公告)日：2017-10-25
申请号：EP15869648.4
申请日：2015-10-20
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NAKAMURA Teruo , KURASAKO Akira , AKITA Hideki , HAMAMACHI Yoshiya , HAKOZAKI Katsutoshi , OGURA Kotaro
IPC分类号： G05B23/02 , E02F9/20 , E02F9/26
CPC分类号： E02F9/26 , E02F9/20 , G01N33/2888 , G01N33/30 , G05B23/0283 , G07C5/004
摘要： A diagnostic system for a work machine includes a data storage device (210) in which sensor information (A) input from a sensor (101A) that senses an oil property of oil used for operation of the work machine and an abnormality degree determination value defined for each kind of the sensor information (A) are stored, and an arithmetic processing device (104) that executes first processing of discriminating the degree of abnormality level of the oil based on the sensor information (A) and the abnormality degree determination value, second processing of determining whether or not necessity to carry out oil analysis involving oil extraction exists based on the degree of abnormality level of the oil discriminated in the first processing, and third processing of outputting information indicating that the oil analysis is necessary to other terminal if it is determined that the oil analysis is necessary in the second processing.
摘要翻译：本发明提供一种作业机械的诊断系统，包括：数据存储装置（210），其从传感器（101A）输入的传感器信息（A）输入到传感器（101A）中，该传感器（101A）检测用于作业机械的运转的机油的油性和规定的异常度判定值对于各种传感器信息（A）进行存储;以及运算处理装置（104），其基于传感器信息（A）和异常度判定值来执行区别油的异常度的第一处理，基于在第一处理中判别出的油的异常程度判定是否存在需要进行涉及油提取的油分析的第二处理，以及向第二处理中输出表示需要进行油分析的信息的第三处理确定在第二处理中油分析是必要的。

2. 发明公开

EP2495441A1 AXIAL PISTON HYDRAULIC ROTATING MACHINE 审中-公开
标题翻译：轴向活塞式液压旋转机
公开(公告)号：EP2495441A1
公开(公告)日：2012-09-05
申请号：EP10826644.6
申请日：2010-10-22
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HEMMI Makoto , AKITA Hideki , SUZUKI Motoshi , SUZUKI Kenta
IPC分类号： F04B1/22 , F03C1/253
CPC分类号： F04B1/126 , F04B1/22
摘要： PROBLEM TO BE SOLVED:
To provide an axial piston hydraulic rotating machine having high stability of a piston shoe.
SOLUTION:
A circular internal static pressure pocket 23 communicated with a filler opening 9A, an inner peripheral land portion 22 formed on the outer periphery of the internal static pressure pocket 23, an external static pressure pocket 24 formed on the outer periphery of the inner peripheral land portion 22, and an outer peripheral land portion 25 formed on the outer periphery of the external static pressure pocket 24 are formed on the sliding surface in contact a piston shoe 9 with the swash palate 10. The inner peripheral land portion 22 is annularly formed around the filler opening 9A. Oil passing grooves 27 through which the internal static pressure pocket 23 communicates with the external static pressure pocket 24 are formed in parts of the inner peripheral land portion 22 on straight lines, passing through the center of the filler opening 9A. The oil passing grooves 27 are inclined with respect to the straight line A-B passing through the center of the filler opening 9A. An inner wall surface and an outer wall surface of the inner peripheral land portion 22 are disposed on the straight lines that connect the center of the filler opening 9A to the center of the oil passing groove 27.
摘要翻译：要解决的问题：提供一种具有活塞瓦的高稳定性的轴向活塞液压旋转机器。本实用新型提供了一种圆形内部静压袋23，该圆形内部静压袋23与注入口9A连通，形成在内部静压袋23的外周上的内周接地部分22，形成在内周的外周上的外部静压袋24 接地部22和形成在外部静压袋24的外周上的外周接地部25形成在与活塞瓦9与斜盘10接触的滑动表面上。内周接地部22形成为环状围绕填充开口9A。内部静压袋23通过其与外部静压囊24连通的供油槽27在内圆周陆部22的部分直线上穿过加油口9A的中心形成。通油槽27相对于通过加油口9A的中心的直线A-B倾斜。内周接地部22的内壁面和外壁面配置在连接注油口9A的中心与通油槽27的中心的直线上。

3. 发明公开

EP3660507A1 OIL DIAGNOSIS SYSTEM 有权
公开(公告)号：EP3660507A1
公开(公告)日：2020-06-03
申请号：EP17919305.7
申请日：2017-11-08
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： TAKAMI Hiroki , KURASAKO Akira , OGURA Kotaro , AKITA Hideki , ONOSE Hiroshi , HAMAMACHI Yoshiya
IPC分类号： G01N33/30 , G05B23/02
摘要： A computer (104) for a manufacturer includes: a storage device (210) storing amount-of-change determination values specified for respective amount-of-change indexes indicative of tendencies of temporal changes in pieces of sensor data A, B, and C, about a plurality of oil properties including a viscosity, a density, and a dielectric constant of oil; an abnormality determining section (211) determining abnormality of the oil on the basis of the pieces of sensor data A, B, and C about the plurality of oil properties and abnormality determination values SAh, SAl, SBh, and SCh prescribed for the respective pieces of sensor data A, B, and C about the plurality of oil properties; a cause identifying section (212) identifying, when the abnormality determining section (211) determines the oil to be abnormal, the cause of the abnormality of the oil on the basis of the type of the oil property determined to be abnormal and the amount-of-change determination value of the oil property; and a transmission section (213) transmitting, to another terminal, the cause of the abnormality identified by the cause identifying section (212).

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