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US 8,985,302 B2Granted
Compact spreader
AssigneeTAKRAF GmbH
InventorsFrank Hubrich, Dieter Hoffmann
Life of this patent
Estimating the term…
Abstract
A compact spreader on continuous tracks (10) for use in opencast mining has a discharge boom (70) with a rearward extension designed as a rocker having a counterweight (100). The rocker is suspended centrally in a framework (50) over the turntable (40). Hydraulic cylinders (14) absorb only forces from half of the imposed load. The embodiment according to the invention is suitable for large band widths and discharge projections up to 100 m and eliminates the danger of tipping over.
Claims20
A compact spreader comprising:
- a sub-structure with several crawler tracks;
- a slewable superstructure;
- a discharge boom and a counter boom with a counterweight;
- a turntable carried by the sub-structure;
- a gantry framework on the turntable, the gantry framework being provided with an axle;
- at least one hydraulic cylinder;
- an upper turntable and an upper ring carrier on the framework;
- and
- a long connecting bridge, wherein:
- the discharge boom and the counter boom with the counterweight are designed as a rocker;
- the rocker is shifted via the axle in the gantry framework which is placed in a central position on the turntable;
- the rocker is supported by the at least one cylinder on the turntable in an adjustable manner;
- and
- the long connecting bridge is supported via the upper turntable and the upper ring carrier on the framework.
11 more elements
A compact spreader comprising:
- a sub-structure with several crawler tracks;
- a turntable carried by the sub-structure;
- a gantry framework on the turntable, the gantry framework being provided with an axle;
- a discharge boom and a counter boom with a counterweight, wherein the discharge boom and the counter boom with the counterweight are connected together and the discharge boom and the counter boom together comprise a rocker that is moveable as a single unit;
- a hydraulic cylinder, the rocker being supported for movement about the axle with an angle adjustable connection from the rocker to the turntable via the hydraulic cylinder;
- an upper turntable and an upper ring carrier on the framework;
- and
- a connecting bridge connected to the upper turntable and the upper ring carrier at a position above at least a portion of said rocker.
5 more elements
A compact spreader comprising:
- a sub-structure comprising several crawler tracks;
- a turntable carried by the sub-structure;
- a gantry framework on the turntable, the gantry framework being provided with an axle;
- a discharge boom and a counter boom with a counterweight, said discharge boom being connected to said counter boom with said counterweight to form a single movable rocker structure;
- a hydraulic cylinder, the rocker structure being supported for movement about the axle with an angle adjustable connection from the rocker structure to the turntable via the hydraulic cylinder;
- an upper turntable and an upper ring carrier on the framework;
- and
- a connecting bridge connected to the upper turntable and the upper ring carrier, at least a portion of said rocker structure being located between said upper turntable and said turntable carried by the sub-structure.
5 more elements
Dependencies are inferred from the claim text.