| 摘要 |
<p>PCT No. PCT/AT86/00046 Sec. 371 Date Feb. 5, 1987 Sec. 102(e) Date Feb. 5, 1987 PCT Filed Jun. 20, 1986 PCT Pub. No. WO86/07560 PCT Pub. Date Dec. 31, 1986.A stone saw comprises a revolving sawing rope, a backing roller supporting the revolving sawing rope at each end of a sawing portion on one side of the sawing rope axis against cutting pressure exerted upon the sawing rope, the cutting pressure causing radial wear on the backing rollers, a feed drive for feeding the sawing rope in a revolving direction over the backing rollers, and housings supporting the backing rollers and pivotally adjustable about the sawing rope axis in dependence on the revolving direction of the sawing rope, the backing rollers being mounted in the housings transversely adjustably to the axes thereof and to the sawing rope axis. A clearance sensor is associated with, and radially spaced from, the backing roller for detecting the clearance between the sensor and the backing roller, the distance varying with the radial wear of the backing roller, the clearance sensor emitting a control signal corresponding to the detected clearance. An adjustment drive is arranged to displace the backing roller towards the sawing rope axis, and a controller receiving the control signal controls the adjustment drive in response thereto for displacing the backing roller in dependence on the radial wear thereof.</p> |
