Method and apparatus for controlling excavation eqiupment

Excavating – Processes

Patent

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Details

37348, 414694, 414699, F02F 100

Patent

active

054797292

ABSTRACT:
Control of a piece of excavation equipment (10) to temporarily disable it from further excavating in an area where a buried cable and/or pipe (50) is present is accomplished by providing a detector (54) for sensing if the buried cable and/or pipe is sufficiently close to be potentially damaged. The detector provides a signal indicative of the presence of the buried cable for transmission, via a transmitter-receiver pair (56, 60), to a control valve (62). When a buried cable and/or pipe is detected, the control valve is actuated to divert hydraulic oil that would otherwise flow to a cylinder (44) that provides forward movement of a bucket (38) on the excavating equipment, thereby preventing further excavation by the bucket in the region of the buried cable and/or pipe.

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patent: 3911602 (1975-10-01), Trevathan
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patent: 4621375 (1986-11-01), Simnovec
patent: 5045368 (1991-09-01), Cosman et al.
patent: 5231355 (1993-07-01), Rider et al.
patent: 5371959 (1994-12-01), Ahs
"A Consortium for Safe Excavation (CSE)," Advertisement made by the Construction Automation and Robotics Laboratory of North Carolina State University.

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