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公开(公告)号：US20230333549A1
公开(公告)日：2023-10-19
申请号：US18023902
申请日：2022-01-18
发明人： Takashi OKUMURA , Hiroyuki KONNO , Satoshi INOSE , Shigeyuki SAKURAI , Shinichi OKU , Tomohiro YONEDA
CPC分类号： G05B23/0283 , G06T7/0004
摘要： A component life prediction system 1 includes a server device 10 configured to be able to communicate with a work machine 2, and capable of predicting the life of a component of the work machine 2. The server device 10 acquires operation information of the work machine 2 including information about the operation location of the work machine 2, and a pre-stored aerial photo of the operation location of the work machine 2; estimates the industry in which the work machine 2 is used based on the acquired operation information of the work machine 2 and aerial photo of the operation location; and predicts the life of the component of the work machine 2, based on the estimated industry.
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公开(公告)号：US20210301502A1
公开(公告)日：2021-09-30
申请号：US17264324
申请日：2019-04-18
发明人： Tsutomu UDAGAWA , Junji YAMAMOTO , Shigeyuki SAKURAI , Yukihito SUZUKI , Hidenobu TSUKADA , Atsushi KANDA
摘要： A cost required to perform the diagnosis of the degradation such as a reduction in output power of an engine while engine degradation diagnosis accuracy is improved. To this end, a controller 37 (engine diagnosing device) determines whether a hydraulic pump 12 is in a preset loaded state (an operation scene where a load torque of the hydraulic pump 12 is in a stable state) for acquiring diagnosis data of an engine 10, and validates a controlled variable related to a torque command value Ta of speed sensing control as the diagnosis data of the engine 10 when it is determined that the hydraulic pump 12 is in the present loaded state, generates time history data using this validated controlled variable as a current feature variable, and enables this time history data to be displayed as trend data for engine diagnosis on a display device 38.
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3.发明申请公开(公告)号：US20150167650A1
公开(公告)日：2015-06-18
申请号：US14571784
申请日：2014-12-16
发明人： Kenta SUZUKI , Motoshi SUZUKI , Shigeyuki SAKURAI , Makoto HEMMI
CPC分类号： F04B1/2035 , F04B1/2042 , F04B1/303
摘要： Disclosed is hydraulic rotating equipment provided with a rotating shaft, a cylinder block including a plurality of cylinders, a like plurality of pistons accommodated in the cylinders, respectively, and a valve plate maintained in slide contact with a rear end surface of the cylinder block. The valve plate includes a low-pressure port communicable with the cylinders, a high-pressure port formed in an arcuate shape over a predetermined angle along a circumferential direction of the rotating shaft and communicable with the cylinders, a seal land maintained in slide contact with the rear end surface, and a sliding contact member arranged on a periphery of the seal land in a range of the predetermined angle along the circumferential direction of the rotating shaft and maintained in slide contact with the rear end surface. A working machine provided with the hydraulic rotating equipment is also disclosed.
摘要翻译： 公开了设置有旋转轴的液压旋转设备，包括多个气缸的气缸体，分别容纳在气缸中的多个活塞以及与气缸体的后端面保持滑动接触的阀板。 阀板包括可与气缸连通的低压端口，沿着旋转轴的圆周方向以预定角度形成为圆弧状并与气缸连通的高压端口，保持与滑动接触的密封区域 后端面和滑动接触构件，其沿着旋转轴的圆周方向在预定角度的范围内设置在密封接合区的周边上，并与后端面保持滑动接触。 还公开了一种设置有液压旋转设备的工作机。
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公开(公告)号：US20220403878A1
公开(公告)日：2022-12-22
申请号：US17776007
申请日：2020-11-10
摘要： Provided is a sliding component having a low coefficient of friction and capable of exerting stable sliding characteristics from the initial stage of sliding, and a manufacturing method capable of easily manufacturing the sliding component. A sliding component (1) includes an iron substrate (10), in which graphite particles (13) are dispersed in an iron base (11), and a tin coating (20) formed on the iron substrate (10), the tin coating (20) including tin as a main material. The graphite particles (13) of the sliding component (1) are exposed through the tin coating (20). The manufacturing method includes: a preparation step of preparing an iron substrate (10) including graphite particles (13) dispersed in an iron base (11); and a film forming step of forming a tin coating (20) on the surface of the iron substrate (10), the tin coating (20) including tin as a main material. The film forming step forms the tin coating (20) so that the graphite particles (13) are exposed through the tin coating (20).
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公开(公告)号：US20220298755A1
公开(公告)日：2022-09-22
申请号：US17638247
申请日：2020-10-13
摘要： There is provided a construction machine that is capable of measuring a minute leakage flow rate of a one-sided tilting variable displacement hydraulic pump. The construction machine includes a pressure sensor that detects a pressure of a hydraulic pump, a bleed-off adjusting device that is enabled to adjust a bleed-off flow rate of the hydraulic pump, and an input device that gives an instruction for measurement of a leakage flow rate of the hydraulic pump. The controller is configured to measure, when the controller determines that the operation device is in a non-operated state and when a measuring command is inputted from the input device, a pressure of the hydraulic pump while changing a control command value for the bleed-off adjusting device in a state in which a flow rate of the hydraulic pump is maintained, and calculate the leakage flow rate of the hydraulic pump on the basis of the control command value for the bleed-off adjusting device at the time that the pressure of the hydraulic pump is stabilized at a predetermined pressure.
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公开(公告)号：US20200018043A1
公开(公告)日：2020-01-16
申请号：US16493052
申请日：2018-08-09
摘要： A hydraulic work machine is provided in which left and right hydraulic motors are driven independently of each other by two hydraulic pumps and in which an anomaly of any of the left and right track devices can be detected with high accuracy. The hydraulic work machine includes a first pressure sensor 13 configured to detect a first pump pressure that is a delivery pressure of a first hydraulic pump 11 and a second pressure sensor 23 configured to detect a second pump pressure that is a delivery pressure of a second hydraulic pump 21. When a controller 2 decides, from detection results of a travel operation detector 5 and work operation detectors 3 and 4, that a work implement 103 is not operated but travel operation devices 6 and 7 are operated and besides left and right track devices 50 and 60 are straightly traveling, the controller 2 calculates an anomaly decision evaluation value based on a pressure difference value obtained by subtracting one from the other of the first pump pressure and the second pump pressure and decides, based on a result of comparison between the anomaly decision evaluation value and a predetermined decision reference value 84, that one of the left and right track devices has an anomaly.
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