Resonantly driven vertical impact system

Details Resonantly driven vertical impact system Resonantly driven vertical impact system

1980-06-05

1982-07-20

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

173 49, 173162R, 299 14, E01C 2309

Patent

active

043402550

ABSTRACT:
A surface impact system including a mobile carrier vehicle is disclosed. A beam is provided having a resonant frequency with a pair of nodes spaced from the input and output ends of the beam and anti-nodes at each end and at the center. An oscillator is fixed to the input end of the beam to vibrate the beam at at least near its resonant frequency. The beam is mounted to the carrier vehicle at the node near the input end of the beam. A weight is superimposed over the beam at the node near the output end, and has a bearing surface adapted to bear downwardly against the beam at that node. The weight is coupled to the vehicle to control the vertical position of the weight. A tool depends from the output end of the beam, and strikes the surface on which the vehicle rests at the vibration frequency of the beam as the tool vibrates responsively to vibrations of the beam. The reaction force generated by the tool is substantially absorbed by the weight and not transmitted to the carrier vehicle.

REFERENCES:
patent: 1841802 (1932-01-01), Gettelman
patent: 3200893 (1965-08-01), Leavell
patent: 3232669 (1966-02-01), Bodine
patent: 3339641 (1967-09-01), Carter
patent: 3367716 (1968-02-01), Bodine
patent: 3545349 (1970-12-01), Otterman et al.

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