Hydraulic excavating machine
OwnerVictor Pobihushchyinventor
Life of this patent
Estimating the term…
Abstract
A hydraulic excavating machine of the type that utilizes a jet of water to loosen soil, the loosened soil and water then being removed from the excavation by suction, comprises a self-propelled vehicle having a holding tank for receiving the excavated soil and water, and a supply tank from which the water is delivered under pressure. The holding tank communicates with a large diameter suction conduit that is carried in a coil on top of the tank and extends along a boom and then downwardly into the excavation. The boom is at a fixed elevation relative to the vehicle, and therefore can operate in locations where there is limited head room.
Claims30
Soil excavating apparatus comprising:
- a platform;
- an elongate boom mounted on said platform and having a free end that is angularly movable in a horizontal direction about said platform;
- an extendible flexible tubular conduit carried by said boom and having one end associated with said platform and connectable to a source of suction, said conduit extending longitudinally of the boom and having a second end suspended to hang vertically from said boom at a spacing from said platform, said second end terminating in a tubular pipe having a lower end adjacent which said tubular pipe carries downwardly directed nozzle means;
- said conduit being extendible and retractable to selectively raise or lower said pipe independently of said boom, and said nozzle means being angularly shiftable about the axis of said pipe;
- such that said pipe can be lowered into the ground to excavate a hole by delivery of high pressure fluid through said nozzle means to loosen soil, and by removal of such loosened soil through said conduit by suction.
Soil excavating apparatus comprising:
- a vehicle;
- a platform mounted on said vehicle to pivot about a vertical axis;
- an elongate boom mounted on said platform and having a free end that is angularly movable in a horizontal direction upon pivoting of said platform about said vertical axis;
- an extendible flexible tubular conduit carried by said boom and having one end associated with said platform and connectable to a source of suction on said vehicle, said conduit extending longitudinally of the boom and having a second end suspended to hang vertically from said boom at a spacing from said vehicle, said second end terminating in a tubular pipe having a lower end adjacent which said tubular pipe carries downwardly directed nozzle means, said nozzle means being angularly shiftable about the periphery of said pipe;
- means for selectively extending and retracting said conduit relative to said boom to selectively raise or lower said pipe independently of said boom;
- and
- means to deliver liquid under high pressure to said nozzle means such that through movement of said conduit relative to said boom said pipe can be lowered into the ground to excavate a hole by the action of high pressure liquid passing through said nozzle means to loosen soil, and by removal of such loosened soil through said conduit by suction.
Dependencies are inferred from the claim text.