Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent
1977-06-20
1978-09-12
Hafer, Robert A.
Tool driving or impacting
Drive by means reacting to rotating eccentric mass
74 61, E02D 718
Patent
active
041130340
ABSTRACT:
A uniaxial vibratory force generator especially adapted for use as a pile driver, which comprises a rigid frame structure having a power actuated clamp at its bottom by which the frame structure grips a pile, and attachment means at its top by which the frame structure is suspended from above. In the frame structure are two superimposed pairs of counter-rotating eccentric weights, each of which is driven by a hydraulic motor. Simultaneous rotation of all of the eccentric weights produces a uniaxial force of a magnitude determined by the phase relationship between the superimposed pairs of eccentric weights. An adjustable coupling between the superimposed pairs of eccentric weights enables that phase relationship to be selectively varied. The coupling is in the form of two meshing gears, one of which is fixed to the shaft of one of the motors driving the eccentric weights of one pair thereof and the other of which has a helically splined connection with a sleeve that is axially splined to the shaft of the adjacent motor of the other pair of eccentric weights. Axial adjustment of the sleeve with respect to the gear mounted thereon thus changes the angular relationship of that gear with respect to the shaft to which the sleeve is splined and, in so doing, effects a corresponding adjustment of the phase relationship between the eccentric weights of the two pairs thereof.
REFERENCES:
patent: 3093007 (1973-06-01), Aebersold
patent: 3433311 (1969-03-01), Lebelle
patent: 3502160 (1970-03-01), Herz
patent: 3572641 (1971-03-01), Peterson et al.
patent: 3722302 (1973-03-01), Piatkowski et al.
patent: 3828864 (1974-08-01), Haverkamp et al.
patent: 3837231 (1974-09-01), Holmlund
Hafer Robert A.
Raygo, Inc.
LandOfFree
Uniaxial variable vibratory force generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Uniaxial variable vibratory force generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uniaxial variable vibratory force generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2379879