Simertis Gmbh

Caterpillar Global Mining LLC

Bucyrus Hex Gmbh

Michael Dietrich

Holger Haut

A drive system with a drive chain which is guided over a sprocket (), said sprocket having a sequence of teeth () arranged on its circumference, and which is composed of a succession of chain links (), wherein each chain link () is composed of at least two link plates () which are arranged parallel to one another and which are connected to one another by means of link pins (), is characterized in that the individual chain links () are coupled to one another by means of at least one connecting plate () which is arranged between said chain links and which permits a parallel displacement of the chain links () relative to one another, wherein each connecting plate () has at least one projection (), and projections () and teeth () have in each case an angular form with rectilinearly running tooth flanks () and engagement flanks (), and in that, in the case of a load-induced elongation of the connecting plates (), the engagement flanks (), starting with the final connecting plate () which is in engagement as far as the first connecting plate () which is passing into engagement, slide outward on the tooth flanks () of the individual successive teeth () such that the areal contact is maintained.

Drive system with a drive chain guided over a sprocket

The invention relates to a tracked chassis, comprising a continuous track, which comprises ground plates () coupled so as to be rotatable relative to each other and which is guided by means of a driven sprocket () having at least one toothed ring () in order to drive the continuous track, wherein each individual ground plate () has at least one hump link () having hump link flanks () oriented in the running direction of the continuous track and the hump links () are designed to engage in recesses () formed between radially protruding teeth () arranged on the circumference of the sprocket () while the continuous track circulates over the sprocket (), characterized in that the ground plates () are coupled to each other by means of at least one connecting sideplate (), which is arranged between the ground plates and which allows the ground plates () to shift in parallel relative to each other, and the ground plates are in planar contact with the hump link flanks () while the continuous track circulates over the sprocket ().

Continuous track for a tracked chassis

A wear element for component subject to abrasive influences, for example in a region of a receiving element for bulk material, includes an element formed by a one-piece, approximately plate-shape molded body made of a wear resistant alloy. The molded body is configured not to be planar in any plane. The molded body has an approximately rectangular cross-section and includes longitudinal sides and lateral sides that are rounded sections flowing into each other.

Wear element, and component provided therewith

A device for tensioning chains on crawler-type or tracked vehicles, in particular the chains of hydraulic excavators, comprises a first cylinder arranged in an area of the chassis for the tracked vehicle, and operatively connected via a piston rod to a guide wheel to tension the chain. A second cylinder forms a spring cylinder and is operatively connected to the first cylinder. The second cylinder concentrically encloses the first cylinder to form a double cylinder and each cylinder is provided with a separate hydraulic connection. At startup of the tracked vehicle, the hydraulic connections of the double cylinder are admitted with a specifiable pre-tensioning pressure. The spring cylinder can be moved with maximum spring travel to its end position because of its larger cross-sectional surface, and the tensioning cylinder pre-tensions the chain with a force that corresponds to the pre-tensioning pressure.

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Dortmund, Germany

Michael Dietrich