Mobile concrete or rock cutting apparatus

Details Mobile concrete or rock cutting apparatus Mobile concrete or rock cutting apparatus

1984-01-09

1986-02-25

Leppink, James A.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 39, E21C 2520

Patent

active

045725802

ABSTRACT:
An instantaneous desired cutting position of a milling cutter or circular saw blade in a mobile apparatus for cutting hard materials, such as a concrete highway surface, is maintained even if the mobile apparatus travels over irregular or slanted surfaces. For this purpose the saw blade position is adjustable either by varying the position of the saw blade mounting in a machine frame or by varying the position of the entire machine frame. The position correction is accomplished by a sensor which produces control signals for a position correction power drive in response to pendulum movements which represent cutter or blade deviations from the desired cutting position. The position of the entire machine frame may be varied by raising or lowering a wheel remote from the cutter or blade. Thus, a binding or jamming of the cutter or blade is prevented.

REFERENCES:
patent: 2736544 (1956-02-01), Wright
patent: 2934327 (1960-04-01), Lewis
patent: 3779607 (1973-12-01), Staab
patent: 4041623 (1977-08-01), Miller et al.
patent: 4175788 (1979-11-01), Jacobson et al.
patent: 4200335 (1980-04-01), Moynihan et al.

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