Excavating – Peat excavators
Patent
1991-10-02
1993-03-16
Reese, Randolph A.
Excavating
Peat excavators
37118A, 37DIG15, 414553, 414715, E02F 3348
Patent
active
051932954
DESCRIPTION:
BRIEF SUMMARY
FIELD OF USE OF THE INVENTION
The present invention relates to an installation for shifting won minerals with a continuous conveyor designed in particular as a belt or chain conveyor. This conveyor system comprises a machine frame and a shovel pivotably coupled to booms. The booms are coupled in vertically a pivotable manner to a rocker arm that is pivotably coupled to the front end of the machine frame. The booms and the rocker arm are connected to the front end of the machine frame by hydraulic cylinder units. A feed chute is arranged above the continuous conveyor in the front end area of the machine frame facing the debris. In order to dump the debris into the feed chute, the loading shovel is pivotable about at least one essentially horizontal axle that crosses or intersects the longitudinal axis of the conveyor system and the pivot drive of the booms passes over an angle of traverse. The upper edge of the rear wall of the loading shovel is above the opening of the feed chute and forms the discharge edge of the material picked up by the loading shovel.
DESCRIPTION OF THE PRIOR ART
Conveyor systems for hauling debris or installations for shifting won minerals of the kind described at the beginning are known, for example, from Austrian patent 380 451. With this known device, the picked-up material could be transferred onto a continuous conveyor by swivelling the rocker arm and the booms and by also swivelling the loading shovel, though relatively expensive connecting rod kinematics are required in light of the swivel path required for such an overhead transfer of the picked-up material. The type of coupling and the actuation of the rocker arm and booms in the known device made it necessary to lift and swivel the loading shovel in the longitudinal direction of the machine relatively far from the machine's center of gravity so that a correct distribution of weight in the longitudinal direction of the conveyor system had to be ensured to prevent tipping. In such a device the required stability can be guaranteed only by the appropriate weight and by constructing a correspondingly long continuous conveyor as a counterweight arm.
SUMMARY OF THE INVENTION
The present invention aims to improve a device of the type described at the beginning in such a way that the loadbearing capacity is improved while the danger of tipping is reduced and at the same time conditions are created which permit better manueverability and turning ability of the device without increasing the risk of tipping. With the device according to the present invention, this object is solved by supporting the hydraulic cylinder unit or units for the rocker arm at the front end of the machine frame and behind the corresponding rocker arm support at the front end of the machine frame. Since the hydraulic cylinder unit or units for the rocker arm is or are supported at the front end of the machine frame and behind the corresponding rocker arm support at the front end of the machine frame, a shorter machine (with respect to its longitudinal direction) may be constructed and the condition is created wherein both the rocker arm and the booms move near the front end of the machine frame when they are swivelled overhead to transfer the picked-up material onto a following continuous conveyor. This substantially reduces the danger of tipping. The kinematics chosen in this case for coupling the rocker arm and pivot drive permits a more compact design and in view of the fact that the entire swivel path passes closer to the front edge of the machine frame and thus closer to the tipping edge defined by the front wheels, it is possible to use correspondingly shorter continuous conveyors and thus reduce the entire length of the machine, thereby clearly increasing the manueverability. Supporting the hydraulic cylinder unit for the rocker arm in the manner indicated also offers an improved load-bearing capacity, since pressure acts on the piston side of such a hydraulic cylinder unit when inserting the shovel into the debris and lifting the shovel in sequen
REFERENCES:
patent: 3115259 (1963-12-01), Wagner
patent: 3127038 (1964-03-01), Allaid
patent: 3920139 (1975-11-01), Nagoshi
patent: 4116014 (1978-09-01), Satterwhite
Gradenegger Helmut
Krivec Eduard
Lammer Egmont
Olsen Arlen L.
Reese Randolph A.
Voest-Alpine Bergtechnik Gesellschaft m.b.H.
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