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公开(公告)号：US11959469B2
公开(公告)日：2024-04-16
申请号：US17637351
申请日：2020-08-20
发明人： Carl Wiesenack , Benjamin Hoelzle , Michael Schaefer , Wolf-Michael Petzold , Jan-Martin Veit , Wilhelm F. Hofmann
CPC分类号： F04B15/02 , F04B9/113 , F04B51/00 , F04B49/065 , F04B49/103 , F04B2201/0202
摘要： A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.
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公开(公告)号：US11959468B2
公开(公告)日：2024-04-16
申请号：US17058276
申请日：2019-05-20
CPC分类号： F04B15/02 , F04B1/02 , F04B9/103 , F04B17/06 , F04B49/002 , F04B49/005 , F04B51/00 , F04B53/144
摘要： An apparatus for conveying thick matter has a drive cylinder for receiving hydraulic fluid, a drive piston, which is arranged in the drive cylinder, a conveying cylinder for receiving thick matter, a conveying piston, which is arranged in the conveying cylinder, and a piston rod, which is fastened to the drive piston for coupling motion together with the conveying piston. The drive cylinder has a rod-side opening for applying pressure to a rod side of the drive piston by way of hydraulic fluid and a crown-side opening for applying pressure to a crown side of the drive piston facing away from the rod side by the hydraulic fluid. A drive pump is designed to generate a drive volume flow having a drive pressure of hydraulic fluid for moving the drive piston. A pump connection is designed for variable connection of the drive pump to the rod-side opening or the crown-side opening for the flow of hydraulic fluid. A sensor is designed for automatic detection of whether the pump connection is connected to the rod-side opening or the crown-side opening. A control unit controls the apparatus in a rod-side operating mode, when the rod-side pump connection is detected, and in a crown-side operating mode, when the crown-side pump connection is detected.
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