Abstract: A track for a tracked vehicle includes two or more track shoes. The track shoes include one or more links having a first link end and a second link end, one or more pins received by one or more links and movable between an installed position and a dislodged position, and one or more pockets positioned adjacent to the pin and formed to receive a hydraulic jack. A first link end of a first track shoe is configured to pivotally couple with a second link end of a second track shoe, and a second link end of a first track shoe is configured to pivotally couple with a first link end of a third track shoe. The track may also include a pin removal system configured to dislodge the pin from the track.

Abstract: A dipper assembly includes a dipper, a dipper door, a closure mechanism, a trip assembly, and a camshaft support assembly. The dipper door is pivotally mounted to the dipper for movement between an open position and a closed position in which the dipper door covers the dipper bottom. The closure mechanism is configured to retain the dipper door in the closed position. The trip assembly is configured to release the dipper door for movement to the open position, and includes a trip arm coupled to a camshaft and also coupled to a trip rope. The camshaft support assembly is configured to receive the camshaft, and includes a bearing block receiving a rotatable bearing member, and a sealing mechanism.

Abstract: A dipper assembly includes a dipper, a dipper door, and a closure mechanism. The dipper door is coupled to the dipper, and has a closed position in which the dipper door covers the dipper bottom. The closure mechanism has a first position and a second position. In the first position the closure mechanism is configured to permit movement of the dipper door away from the dipper bottom. In the second position, the closure mechanism is configured to retain the dipper door in the closed position. The closure mechanism includes a link having a first leg and a second leg, one or more side link plates coupled to the link and to the dipper back, and a closure mechanism pin assembly configured to adjust the position of the link relative to the dipper door.

Abstract: A crowd assembly (30) for a power shovel (10) includes a saddle block (34) adapted for pivotal connection to the shovel boom (24). A tubular dipper handle (32) is slideably supported by the saddle block. A hydraulic actuator (50) has a cylinder (52) and a piston rod (54) that is outwardly extendable from one end of the cylinder. One of the cylinder or the piston rod is fixed to the dipper handle and the other one is attached to the saddle block. The cylinder and the piston rod are within the tubular dipper handle which is able to slide longitudinally over the cylinder. A guide bushing (70) extends around the one end of the cylinder and engages an interior surface of the dipper handle. The guide bushing thereby supports that end of the cylinder and inhibits hydraulic actuator from deflecting within the dipper handle when the piston rod is extended from the cylinder.

Abstract: A hydraulic circuit for controlling a component of a hydraulic machine includes an actuator having a head end chamber and a rod end chamber, the actuator having an extended position for moving the component in a first direction and a retracted position for moving the component in a second direction. The hydraulic circuit includes a regeneration valve having an open position for fluidly connecting the head end chamber to the rod end chamber, a first control valve having a first open position, a second open position for fluidly connecting the regeneration valve to the return tank and substantially fluidly the rod end chamber from the fluid source, and a closed position, and a second control disconnecting valve having a first open position, a second open position, and a closed position for substantially fluidly disconnecting the rod end chamber from the fluid source.

Abstract: A dragline bucket includes a main body moveable between a digging orientation and a dumping orientation and a pivotable spreader beam coupled to the main body at a pivot point. The dragline bucket further includes an energy capture mechanism including an actuator coupled to the main body and the pivotable spreader beam and an energy storage mechanism coupled to the actuator.

Abstract: A machine includes a boom, a stick, a bucket, and a hose arrangement. The stick is pivotally coupled to the boom. The bucket is operatively coupled to the stick and defines a pivotal axis therein. The bucket has a bowl-shaped portion for holding material on a first side and a recessed portion on a second side. The hose arrangement is coupled to the bucket and includes a first and a second manifold, and a first and a second set of hoses. The first manifold is coupled to the bucket and disposed in the recessed portion proximal to the pivotal axis. The second manifold is coupled to the bucket and disposed on the second side of the bucket. The first set of hoses is fluidly connected to the first manifold. The second set of hoses is fluidly connected to the first and second manifolds.

Abstract: System and methods for protecting motors of a vehicle are provided. A system includes a current transformer device for each phase of the three-phase power received by each protected motor. Each current transformer device includes a switch that is normally in a first position and is configured to monitor an output current of fuse through which the power is transmitted, compare the output current to a threshold current level, and, when the output current is below the threshold current level, change the switch to a second position. The system also includes a processing circuit configured to control operation of the one or more motors of the vehicle. The processing circuit is configured to determine whether one or more of the switches of the plurality of current transformer devices is in the second position and, if so, activate a fault condition.

Abstract: The present disclosure is related to a drive system for a ground engaging member of a machine. The drive system includes first and second hydraulic motors that are disposed parallel to each other. The drive system also include first and second brake valves that are configured to regulate flow of fluid through the first and second hydraulic motors in order to selectively perform braking. The first hydraulic motor is in fluid communication with a first input line and a first output line. The second hydraulic motor is in fluid communication with a second input line and a second output line. A first connection line is configured to fluidly communicate the first input line with the second input line to equalize pressure therebetween. A second connection line is configured to fluidly communicate the first output line with the second output line to equalize pressure therebetween.

Abstract: A hoist includes a platform, a drum, and a motor. The drum is supported by and configured to rotate with respect to the platform, and the motor is coupled to the drum and configured to rotate the drum. The hoist further includes a shaft having a splined section and an interlock system configured to constrain rotation of the shaft. The shaft is coupled to at least one of the drum and the motor, and communicates torque between the drum and the motor. The interlock system includes a keyed ring and an arm. The keyed ring is configured to slide onto and engage the splined section of the shaft. The arm extends from the keyed ring and is configured to provide leverage to limit rotation of the keyed ring, thereby interlocking rotation of the shaft when the keyed ring is engaged with the splined section of the shaft.

Abstract: A mining shovel (10) includes a hydraulic system comprising a plurality of fixed displacement pumps (104,106,108,110) driven by a variable speed motor (100), and a tank (68) system comprising an upper return tank and a lower supply tank (70). A cylinder manifold (64) is connected to the pump control manifold (112), and includes a directional control valve for directing the extend and retract functions of the cylinder (50), while accepting fluid flow in a single direction from the pump control manifold. The single direction flow allows for the use of smaller fluid conduits (61), such that the hose providing a high pressure supply can be comparatively smaller than the return hose (67).

Abstract: A method, system, and apparatus for providing energy discharge capability for a junction box that includes at least one ultra- or super-capacitor. A discharge resistor is connected to a first terminal block of the junction box. A normally-open relay is connected to a second terminal block of the junction block, the relay being connected in series between the discharge resistor and the second terminal block. The normally-open relay is closed to create a discharge path for discharging energy stored in the at least one ultra- or super-capacitor. The junction box is capable of being safely serviced after the energy stored in the at least one ultra- or super-capacitor has been discharged by way of the discharge path.

Abstract: A braking system for a machine including an accumulator configured to receive a pressurized fluid for storage thereof. A control valve disposed between the accumulator and the brake cylinder, the control valve configured to selectively allow discharged pressurized fluid from the accumulator to a brake cylinder. A pressure sensor disposed upstream of the control valve. Further, a controller configured to determine a pressure change in the accumulator using the pressure sensor during at least one of the pulsations of the control valve and compare the determined pressure change with a pre-determined threshold.

Abstract: A drilling rig carousel assembly includes a drilling rig carousel comprising a plurality of slots for holding drill components, a first actuator coupled to the drilling rig carousel and configured to axially rotate the drilling rig carousel, a second actuator coupled to the drilling rig carousel and configured to move the drilling rig carousel between a first position and a second position, and a sensor assembly. The sensor assembly includes a rotation sensor configured to monitor an axial rotation of the drilling rig carousel, and a position sensor configured to provide a signal representative of whether the drilling rig carousel is in the first position or the second position.

Abstract: An excavator includes a dipper assembly configured to receive a dipper load, the dipper assembly having an actuated position for emptying the dipper load, a sensor assembly configured to monitor one or more operating conditions of the excavator, and a control module. The control module is configured to receive signals from the sensor assembly, determine a height of the dipper assembly relative to a surface, and inhibit movement of the dipper assembly to the actuated position.

Abstract: A mining shovel includes a dipper having an inner surface, and a removable liner assembly coupled to the dipper and adjacent to the inner surface of the dipper. The removable liner assembly includes a first rail coupled to the dipper, a first liner segment disposed on the first rail and covering at least a portion of the first rail, and a second liner segment removably coupled to the first rail and covering at least one of a portion of the first liner segment and a portion of the first rail. The first rail is substantially covered by at least one of the first and second liner segments.

Abstract: A void protection system for a mining shovel having an operator input device includes an independent metering valve assembly including one or more fluid source-cylinder valves for fluidly connecting the fluid source to the hydraulic cylinder. The system also includes a sensor assembly for monitoring the fluid pressure within the rod end and the head end of the hydraulic cylinder, and a control module. The control module is configured to monitor movement of the operator input device, monitor pressure within the hydraulic cylinder, increase the opening of the corresponding fluid source-cylinder valve and increase fluid flow from the fluid source to fill corresponding end of the hydraulic cylinder until pressure in the corresponding end of the hydraulic cylinder is above a first threshold pressure.

Abstract: A slide shoe installs on an undercarriage frame assembly of an excavating machine to prevent contact by the lugs of track links when the track buckles. The slide shoe is connected at a top surface to a mounting bar extending between side plates of the frame assembly. The slide shoe may include a front bottom beveled surface extending forward from a bottom surface to a front surface and a rear bottom beveled surface extending rearward from the bottom surface, with the beveled surfaces oriented at upward angles with respect to a line parallel to the bottom surface. A rear upper beveled surface extends rearward from the top surface and is oriented at a downward angle with respect to a line parallel to the top surface and intersects the rear bottom beveled surface at a rear tip of the slide shoe.

Abstract: A power shovel including a tool for lifting, a machine house, a hoist drum, hoist drum machinery and an auxiliary weight box having a perimeter, the hoist drum and hoist drum machinery being at least partially disposed within the perimeter of the auxiliary weight box and the hoist drum being disposed outside of the machine house.

Abstract: A mining vehicle includes one or more crawlers, a first deck positioned above the crawlers, and a second deck positioned above the first deck. The first deck includes a first floor surface providing a walking surface, and one or more first deck maintenance components configured to allow a person to move among and access the first deck maintenance components. The second deck includes a second floor surface providing a walking surface, one or more second deck maintenance components, and one or more aisles configured to allow a person to move among and access the second deck maintenance components. The first and second decks are configured to provide maintenance access to the first and second deck maintenance components.