Excavating – Peat excavators
Patent
1985-12-16
1988-07-26
Crowder, Clifford D.
Excavating
Peat excavators
37 98, 405164, F16L 104, E02F 518
Patent
active
047591382
ABSTRACT:
A pipeline trenching plough is towed along the seabed by a tow wire (20) connected to a ship or tractor. The course of the plough is changed or maintained by oppositely-acting forces imposed on the wire (20) and on the body (10) of the plough by a hydraulic ram (24). The offset angle between the wire (20) and the lengthwise direction (30) of the plough is monitored by a potentiometer (33, 35). The wire (20) is connected to the plough at a real hitch point (22) vertically above the center of resistance (23) of soil forces on the ploughshare (12) and landside (14). Under normal equilibrium conditions the forces from the ram are zero. The forces required to change the course are small and independent of the offset angle. Ram force can counteract a side-sloping seabed. In modifications, the wire (20) is connected to a virtual hitch point formed by an adjustable linkage; or by a carriage adjustable along a transverse beam.
REFERENCES:
patent: 2756654 (1956-07-01), Porterfield, Jr. et al.
patent: 3140745 (1964-08-01), Hinkle et al.
patent: 3431741 (1969-03-01), Kinnan
patent: 3454285 (1969-07-01), Van Peursem
patent: 4106335 (1978-08-01), Shatto
patent: 4329793 (1982-05-01), Reece
patent: 4428132 (1984-01-01), Reece
patent: 4585372 (1986-04-01), Grinstead et al.
Crowder Clifford D.
Soil Machine Dynamics Limited
LandOfFree
Plow steering system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plow steering system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plow steering system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-251981