POSITIONING DEVICE FOR POSITIONING A MOVABLE ELEMENT

    公开(公告)号:US20240167616A1

    公开(公告)日:2024-05-23

    申请号:US18382665

    申请日:2023-10-23

    IPC分类号: F16M11/20 F16C32/06

    摘要: The positioning device for positioning a movable element includes a base including a flat guide surface parallel to first and second directions, and a Gantry beam in the second direction spaced from the guide surface. A Gantry drive for moving the beam relative to the base in the first direction, includes two first linear axes extending in the first direction, each including a linear drive. A first air bearing device includes first and second air bearing arrangements including first and second horizontal air bearings for guiding first and second beam ends on guide surface first and second sections, respectively, a third air bearing arrangement on a beam central section including at least third and fourth horizontal air bearings for guiding the beam central section on a guide surface third section and including at least one lateral air bearing for guiding the beam on a guide beam flat side surface.

    FLUID MACHINE
    3.
    发明公开
    FLUID MACHINE 审中-公开

    公开(公告)号:US20240141898A1

    公开(公告)日:2024-05-02

    申请号:US18242853

    申请日:2023-09-06

    摘要: A fluid machine includes a plurality of fluid dynamic plain bearings supporting a rotating member. The fluid dynamic plain bearings each include: a top foil; a bump foil; and a bearing housing. The top foil has a bearing surface that has one end portion and the other end portion in a circumferential direction of the bearing surface. The top foil has a fixed end and a free end respectively formed at the one end portion and the other end portion. A movement of the free end in an axial direction of the rotating member is regulated by a regulating member. A clearance through which a fluid flows is formed between the fixed end and the free end. The free end has a discharge passage through which a foreign substance contained in the fluid is discharged from the clearance. The discharge passage is formed through the free end.

    Air bearing apparatus for calibrating force measurement devices

    公开(公告)号:US11898921B2

    公开(公告)日:2024-02-13

    申请号:US17746438

    申请日:2022-05-17

    发明人: Jason Steuber

    IPC分类号: G01L25/00 F16C32/06

    CPC分类号: G01L25/00 F16C32/0607

    摘要: An air bearing for calibrating a force measurement device comprises an inner wall, an outer wall, an upper wall, a lower wall, an internal chamber, an object retention opening, and a plurality of air outlets. The inner wall and outer wall each have a cylindrical shape with the outer wall being concentric with the inner wall. The upper wall and lower wall each have an annular shape and are attached to the inner wall and the outer wall. The internal chamber is formed by inner surfaces of the four walls, and is configured to retain compressed air. The object retention opening is formed by an outer surface of the inner wall and is configured to receive and retain an object. The air outlets are positioned along the inner wall and are configured to allow compressed air to flow from the internal chamber to the object retention opening.

    Intershaft seal assembly with pressure-balanced translatable carrier

    公开(公告)号:US11725588B2

    公开(公告)日:2023-08-15

    申请号:US17311713

    申请日:2020-07-20

    发明人: Glenn M. Garrison

    摘要: An intershaft seal assembly for use between a rotatable outer structure and an inner structure within a turbine engine is presented. The assembly includes a primary sealing ring, a translatable carrier, a secondary sealing ring(s), a lower-pressure chamber, a higher-pressure chamber, a first channel(s), and a second channel(s). The primary ring is disposed within and extends from a circumferential groove about the carrier so as to sealingly engage the rotatable outer structure. The primary ring rotates within the groove and with the rotatable outer structure. Each secondary ring is interposed between the carrier and the inner structure. The carrier slidingly contacts the secondary ring(s). The lower-pressure chamber is generally defined by the carrier and the inner structure adjacent to a higher-pressure side. The higher-pressure chamber is generally defined by the carrier and the inner structure adjacent to a lower-pressure side. Each first channel traverses the carrier so that a gas from the lower-pressure side may enter the lower-pressure chamber. Each second channel traverses the carrier so that a gas from the higher-pressure side may enter the higher-pressure chamber. The sum of the translation-resistant forces (FTTR) encountered by the carrier is less than the translation-resistance force (FTR) encountered by the primary seal ring.

    Roll stand
    10.
    发明公开
    Roll stand 审中-公开

    公开(公告)号:US20230228295A1

    公开(公告)日:2023-07-20

    申请号:US17919275

    申请日:2021-04-09

    申请人: SMS group GmbH

    IPC分类号: F16C32/06 B21B13/00

    摘要: A roll stand (1) includes a roll (3), in particular a backup roll, mounted via oil film bearings (2). Each oil film bearing (2) has a sealing system for sealing the oil film bearing (2) to prevent oil leakage and a coolant ingress. The oil film bearing (2) is integrated into an oil-circulating lubrication system (4), which is fluidically connected to the oil film bearing (2) via oil feed lines (5) and an oil discharge line (6). A first sensor (11) is arranged in the oil feed line (5) and a second sensor (12) is arranged in the oil discharge line (6). The two sensors (11, 12) are designed to determine the coolant content in the relevant oil volume flow.