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Combination package tilt pad journal bearing/dual self equalizing thrust bearings, with hydrostatic lift provisions

机译:组合包倾斜垫轴颈轴承/双自平衡推力轴承,带静液压提升装置

摘要

The bearing pedestal for the rotating shaft 12 includes journal and axial thrust bearings 16 and 26, respectively. Both of the journal and thrust bearings have passages 70 and 80, respectively, and recesses 74 and 82 in the respective pad faces for flowing high pressure lubricant between the pads and the shaft to displace the shaft and pads relative to one another to minimize the required breakaway torque and metal-to-metal contact. Each thrust bearing includes a plurality of circumferentially spaced pads 26 and lubricant directors 30 between the pads. The lubricant director includes a rib 34 extending generally tangentially and radially outwardly to channel lubricant from a preceding pad to a succeeding pad in the direction of shaft rotation and to channel the lubricant for flow tangentially from the thrust bearing into an annular cavity 39 for return to sump 42. An end seal assembly 40 includes an element 44 having internal and external labyrinth seals 54 and 55 straddling an annular groove 50 opening onto the shaft. An annular recess 48 is provided along the inner surface of element 44 to receive lubricant splashed from the tangential flow and direct it into the cavity. Drain back openings 56 and 59 flow lubricant from the labyrinth seals into the cavity 39.
机译:旋转轴12的轴承座分别包括轴颈和轴向推力轴承16和26。轴颈轴承和推力轴承都分别具有通道70和80,并且在各自的轴瓦表面上有凹槽74和82,用于在轴瓦和轴瓦之间流动高压润滑剂,以使轴瓦和轴瓦相对于彼此移位,从而将所需的磨损降至最低。分离扭矩和金属对金属的接触。每个止推轴承包括多个周向间隔的衬块26和在衬块之间的润滑剂导向器30。润滑剂导向器包括肋34,肋34大体上沿切向且径向向外延伸,以沿轴的旋转方向将润滑剂从先前的垫块引导至随后的垫块,并且将润滑剂切向地引导以将其从推力轴承切向流到环形腔39中以返回至端部密封组件40包括具有内部和外部迷宫式密封件54和55的元件44,所述内部和外部迷宫式密封件54和55跨过在轴上开口的环形凹槽50。沿着元件44的内表面设置有环形凹槽48,以接收从切向流飞溅的润滑剂并将其引导到腔中。排污口56和59使润滑剂从迷宫式密封件流入腔体39中。

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