Appeal No. 2004-0839 Page 6
Application No. 09/347,695
actuation of cylinder 36. Vibratory frame 18 is connected by four lower rubber blocks or
pads 20 to lower plate 50 and by two side rubber pads 20 secured to fixed collars 72 on
cylinders 56. Vibratory frame 18 includes a box-shaped frame formed by frame
members 81 and upper and lower plates 82 secured to adjacent frame members
81. A sleeve 84 extends between central openings in plates 82 and is secured to
plates 82. A plastic bearing insert 86 is positioned within sleeve 84. A cover plate
88 is removably connected to upper plate 82 to permit replacement of bearing insert 86
with wear.
Push tube 68 with relative sliding movement, contacts bearing insert 86 and is
guided by insert 86. A vibrator 90 which includes a hydraulically activated eccentric
is mounted on a mounting bar 92 secured to adjacent frame members 81 and may be
adjusted vertically along mounting bar 92 in order to obtain optimum vibratory
movement of vibratory frame 18. A hydraulic motor 94 is connected to vibrator 90 for
rotation of the eccentric thereof. Upon actuation of vibrator 90, vibratory frame 18
vibrates push tube 68 relative to main support frame 16 and adjacent cylinders 56 with
rubber pads 20 absorbing the vibrating motion in shearing, compressive, and tensile
movements.
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Last modified: November 3, 2007