Vibration exciter

Details Vibration exciter Vibration exciter

2007-11-15

2011-12-06

Sorkin, David (Department: 1774)

Agitating

By vibration

By rotary movement of unbalanced-weight shaft

C173S049000, C175S055000

Reexamination Certificate

active

08070352

ABSTRACT:
A vibration exciter, particularly for a vibration pile driver, comprises at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by at least one rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing has at least one closure lid that is at least partially unreleasably coated with a slide alloy, for radial and axial bearing of the rotor shaft. At least one shaft seal is disposed between the rotor shaft and stator housing. The seal is hydraulically biased and provided with a support element.

REFERENCES:
patent: 3368632 (1968-02-01), Lebelle
patent: 7598640 (2009-10-01), Heichel et al.
patent: 2004/0025608 (2004-02-01), Fervers et al.
patent: 41 18 069 (1992-12-01), None

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