Engine shaft balance assembly

• Main Authors: ECKERT; TERRY T, RAMBO; PHILLIP W, WESLING; RICHARD A
• Format: Patent
• Language: English
• Published: 27.04.1993
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; SHOCK-ABSORBERS; SPRINGS; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; WEAPONS

A balancing assembly for a gas turbine hollow drive shaft is disclosed. The balance assembly includes an expandable balance weight carrier and means for expanding the carrier inside the hollow drive shaft. In a preferred embodiment the carrier comprises a split ring with a plurality of apertures at which balance weights can be received. Combinations of balance weights can be located around the carrier ring to establish an imbalance correction on the carrier. The carrier can then be positioned inside the shaft and expanded against the shaft with the imbalance correction directed opposite the shaft imbalance.