中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.011 seconds)

    Apparatus for conveying thick matter
    3.
    发明授权
    Apparatus for conveying thick matter 有权

    公开(公告)号：US11959468B2

    公开(公告)日：2024-04-16

    申请号：US17058276

    申请日：2019-05-20

    Applicant: Putzmeister Engineering GmbH

    Inventor： Wolf-Michael Petzold ,  Jan-Martin Veit ,  Michael Schaefer ,  Frederik Kort

    IPC: F04B15/02 ,  F04B1/02 ,  F04B9/103 ,  F04B17/06 ,  F04B49/00 ,  F04B51/00 ,  F04B53/14

    CPC classification number: F04B15/02 ,  F04B1/02 ,  F04B9/103 ,  F04B17/06 ,  F04B49/002 ,  F04B49/005 ,  F04B51/00 ,  F04B53/144

    Abstract: 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.

    Hydraulic system
    4.
    发明授权
    Hydraulic system 有权

    公开(公告)号：US10273984B2

    公开(公告)日：2019-04-30

    申请号：US14391291

    申请日：2013-03-20

    Applicant: Putzmeister Engineering GmbH

    Inventor： Jan-Martin Veit ,  Werner Muenzenmaier

    IPC: E02F9/22 ,  F15B11/17 ,  F15B7/00 ,  F04B15/02 ,  F04B49/06 ,  F04B9/117 ,  F15B13/02 ,  F15B13/06

    Abstract: A hydraulic system, preferably for actuating and engaging a mobile slurry pump, includes a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly including at least one motor-driven hydraulic pump. The hydraulic system further includes a secondary circuit, actuating a second hydraulic consumer, which circuit has a second hydraulic drive assembly including at least one additional motor-driven hydraulic pump. In a first operating state, hydraulic oil from a common tank can be admitted to the hydraulic consumers arranged in the primary circuit and in the secondary circuit via the hydraulic drive assemblies thereof, independently of one another. In a second operating state, a portion of the hydraulic oil is supplied from the primary circuit to the secondary circuit to actuate the second consumer.

    Vehicle for a thick matter pump apparatus
    7.
    发明授权
    Vehicle for a thick matter pump apparatus 有权

    公开(公告)号：US11732488B2

    公开(公告)日：2023-08-22

    申请号：US17427353

    申请日：2020-01-29

    Applicant: Putzmeister Engineering GmbH

    Inventor： Martin Diebold ,  Jan-Martin Veit

    IPC: F15B13/02 ,  E04G21/04 ,  B60S9/10

    CPC classification number: E04G21/0436 ,  B60S9/10 ,  E04G21/0463 ,  F15B13/02 ,  F15B2211/3059 ,  F15B2211/3138 ,  F15B2211/3144 ,  F15B2211/7142

    Abstract: A vehicle having a thick matter pump has multiple supporting devices, a rotatable mast assembly with part-mast members, and a hydraulic drive assembly with hydraulic drives for the supporting devices and the mast assembly. A valve assembly is provided for the hydraulic drive assembly. The valve assembly has a group of proportional valves and a group of switching valve devices which are each connected to at least one hydraulic drive of the supporting devices or the part-mast members. The switching valve devices are connected downstream of the proportional valves. Exactly one switching valve device is supplied by exactly one proportional valve and is connected downstream of exactly one proportional valve such that outputs of the proportional valves lead exclusively to inputs of the switching valve devices.

    Hydraulic drive system for a construction material pump, and construction material pump
    8.
    发明授权
    Hydraulic drive system for a construction material pump, and construction material pump 有权

    公开(公告)号：US11231054B2

    公开(公告)日：2022-01-25

    申请号：US17251661

    申请日：2019-06-07

    Applicant: Putzmeister Engineering GmbH

    Inventor： Jan-Martin Veit

    IPC: F15B15/20 ,  F04B15/02 ,  E04G21/02

    Abstract: A hydraulic drive system for a construction material pump has a hydraulic circuit for hydraulic fluid, a feed pump which is designed to feed hydraulic fluid into the hydraulic circuit, at least one controllable pressure-limiting valve unit, which is designed for variable adjustment of a limit pressure of hydraulic fluid of at least one portion of the hydraulic circuit within a pressure range, and a control unit. The control unit is designed to control the pressure-limiting valve unit according to at least one operating parameter of the hydraulic drive system and/or according to the hydraulic fluid in such a way that the pressure-limiting valve unit adjusts the limit pressure of the portion of the hydraulic circuit.

Patent Agency Ranking