초록 ▼

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

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.

대표청구항 ▼

A mobile apparatus for cutting hard materials, such as concrete, comprising a machine frame, wheel means for supporting said machine frame, a circular saw blade, saw blade mounting means for rotatably mounting said circular saw blade in said machine frame to take up a predetermined cutting position,

A mobile apparatus for cutting hard materials, such as concrete, comprising a machine frame, wheel means for supporting said machine frame, a circular saw blade, saw blade mounting means for rotatably mounting said circular saw blade in said machine frame to take up a predetermined cutting position, saw blade position sensor means operatively arranged for sensing the instantaneous position of said saw blade, and saw blade position correction means in said machine frame responsive to said position sensor means for automatically maintaining said saw blade in said predetermined cutting position even if said machine frame travels on a slanted or uneven surface, wherein said saw blade position sensor means comprise pendulum means and at least one sensing member operatively arranged for sensing the instantaneous position of said pendulum means, wherein said saw blade position correction means comprise power drive means operable in response to said sensing member for maintaining said saw blade in said predetermined position, and wherein the position of said sensing member relative to said pendulum means is adjustable in the direction of pendulum excursions.