Excavating – Ditcher – Condition responsive
Patent
1995-07-10
1997-09-30
Melius, Terry Lee
Excavating
Ditcher
Condition responsive
37352, 172 45, G05D 104
Patent
active
056715544
ABSTRACT:
Excavating apparatus includes a vehicle having excavating means in the form of a pivotal cutting boom pivotably mounted by way of mounting means on the vehicle. The cutting boom has an endless cutting clain drivingly mounted thereon and the boom is pivoted relative to the vehicle so as to vary the depth to which a trench is current. In seeking to cut a trench having a level floor irrespective of any undulations in the surface upon which the vehicle travels, a sensor is associated with the apparatus and is arranged to receive a reference signal. Any variation in the location at which the reference signal impinges on the sensor, for instance due to the passage of the vehicle up an incline, serves to determine the angle at which the cutting boom extends from the vehicle and so vary the depth to which the trench is cut. In order to achieve an accurate relationship between the movement of the position at which the signal impinges on the sensor, and the corresponding movement of the boom, the sensor is mounted by way of mounting means in such a way that it can move relative to the cutting boom along an arcuate path defined by arcuate guide means having a centre of curvature that corresponds to the axis of rotation of an idler about which the cutting clain travels.
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Batson Victor
J. Mastenbroek & Company Limited
Melius Terry Lee
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