A work machine, in particular a cable-operated excavator, for dragline bucket operation, a dragline bucket taken up by a hoist rope, wherein the attachment can be retracted by at least one dragline for carrying out the dragging movement and a dragline guide for guiding the dragline is arranged at the work machine, wherein the dragline guide is designed as movable, in particular as linearly movable.

An assembly and method for using a flexible tensile member as part of the rigging for a dragline bucket. The tensile member includes a stranded core surrounded by a separate armor layer. The armor layer assumes the form of a hollow cylinder having a substantial wall thickness. A significant gap is provided between the outward-facing surface of the stranded core and the inward-facing surface of the armor layer. This gap minimizes wear between the two elements during the normal bending and flexing of the tensile member. A first anchor is attached to a first end of the stranded core and a second anchor is attached to a second end of the stranded core. These anchors serve to transmit tension carried by the stranded core. A first end of the armor layer is also attached to the first anchor and a second end of the armor layer is attached to the second anchor.

A tooth of a pinion has a first flank extending across a face width of the tooth in an axial direction substantially parallel to a central axis of the pinion from a first axial end of the tooth to a second axial end of the tooth. The first flank has a first, convex crown profile shaped as an arc of a first circle with a first radius, and a first center of arc radius of the first flank is a point on the first flank located on a line perpendicular to the central axis of the pinion and passing through the center of the first circle. A second opposite and opposing flank of the tooth has a second, convex crown profile shaped as an arc of a second circle with a second radius, wherein a second center of arc radius of the second flank is a point on the second flank located on a line perpendicular to the central axis of the pinion and passing through the center of the second circle. The first center of arc radius of the first flank is located at approximately the midpoint of the face width of the tooth, and the second center of arc radius of the second flank is offset in the axial direction toward one of the first or second axial ends of the tooth relative to the first center of arc radius by a distance that is approximately 30-40% of the face width of the tooth.

A method for moving material efficiently using a machine with a bucket comprises determining at least one of the following variables: location of the material to be moved relative to the machine, type of material to be moved, orientation of the surface of the material to be moved, and the desired direction for moving the bucket to move the material, and changing the orientation of the bucket relative to the machine based on any one of these variables.

A bucket comprises a first attachment region, a second attachment region, and a third attachment region configured to connect to flexible members, each attachment region including a plurality of attachment points.

An excavator for use on slopes having an incline above 30 degrees, the excavator comprising an undercarriage, a propulsion system and a house rotatably mounted to the undercarriage, wherein a rigid member extends upwardly from the undercarriage, through the house and around which the house rotates, the rigid member supports a cradle to which an engine power pack is mounted within the house, the cradle allowing the engine power pack to tilt within the cradle so that it stays generally horizontal as the excavator travels over a slope.

A hydraulic driving apparatus that drives a plurality of driving subjects and regenerates energy thereof. This hydraulic driving apparatus includes: a first pump motor; a second pump motor that is switchable between a state of moving a first driving subject by hydraulic oil discharged from the first pump motor and a state of being operated as a pump by means of energy of the first driving subject; a first pump motor line that couples the first and second pump motors with each other; a first accumulator connected to the first pump motor line; a regeneration subject hydraulic actuator that moves a second driving subject; a second accumulator that receives hydraulic oil from the regeneration subject hydraulic actuator; a second pump motor line that couples the second accumulator with the first pump motor; and a pressure release changeover valve that opens/closes the second pump motor line.

A system for removing material from a sloping surface includes a plurality of cables and pulleys used to manipulate positioning of a slusher bucket across the sloping surface. A multiple drum winch communicates with the cables to selectively retract or feed the cables enabling precise positioning of the slusher bucket. An elevated upper transverse anchoring cable is used to secure one or more of the pulleys. The anchoring cable itself can be mounted to the ground by one or more ground anchors. According to another aspect of the invention, it includes an improved slusher bucket configuration with two working edges. A preferred embodiment of the bucket configuration includes a scraper edge and scarifying teeth located on another working edge.

A mining shovel includes a boom and a transmission unit coupled to the boom. The transmission unit includes an outer housing, an internal motor housing disposed within the outer housing, and a venting system coupled to the outer housing to direct air through both the outer housing and the internal motor housing.

A mining shovel includes a boom and a transmission unit coupled to the boom. The transmission unit includes an outer housing, an internal motor housing disposed within the outer housing, and a venting system coupled to the outer housing to direct air through both the outer housing and the internal motor housing.