摘要:
Described herein are illustrative payload carrying machines and dump body linkage. An example vehicle can include a frame and a dump body movable relative to the frame. In the example vehicle, an articulation mechanism can be connected to both the dump body and the frame. The articulation mechanism can be a four-link system including a first pair of links can be coupled to the frame and dump body and a second pair of links can be coupled to the frame and dump body. The second pair of links can be longer than the first pair of links.
摘要:
A hydraulic control system may include a closed loop hydraulic circuit with at least one hydraulic motor. A plurality of variable displacement pumps may be fluidly connected in parallel in the closed loop hydraulic circuit. A plurality of hydraulic actuators may be configured to adjust the displacement of the variable displacement pumps. A pilot valve assembly may be configured to supply the hydraulic actuators with hydraulic fluid having a pilot pressure corresponding to a desired displacement of the variable displacement pumps. A pressure regulating device may be configured to limit the pilot pressure of the hydraulic fluid supplied to the hydraulic actuators when a working pressure in the closed loop hydraulic circuit reaches a maximum allowable working pressure.
摘要:
A side wall of a movable part of an excavator bucket is disclosed. The side wall may have a sheet metal base. The sheet metal base may have an attachment portion for attaching the side wall to a rear wall of the excavator bucket. The sheet metal base may also have a cranked portion extending from the attachment portion. Further, the sheet metal base may have an extension portion extending from the cranked portion to a distal end of the sheet metal base.
摘要:
The disclosure provides a roller assembly for an undercarriage system of a machine. The undercarriage system includes a frame, which has a first inner surface defining a first opening. The roller assembly includes a roller supported on a roller shaft, and a spacer assembly. The spacer assembly includes a boss and a pad. The boss includes a second inner surface defining a second opening. The boss is fixedly attached to the frame, such that the second opening axially aligns with the first opening of the frame. The pad includes a third inner surface defining a third opening. The pad has a relatively greater hardness than the boss. The pad is fixedly attached to the boss, such that the third opening axially aligns with the second opening. Further, the roller shaft extends through the first opening, the second opening, and the third opening, to support the roller on the frame.
摘要:
The present disclosure relates to a hydraulic mining shovel. The shovel may comprise a main frame, a power module and a counterweight module. The shovel may further comprise a first exhaust aftertreatment module and a second exhaust aftertreatment module, each being mounted onto the counterweight module and each including a reductant tank and pump unit and a selective catalytic reduction unit. The first exhaust aftertreatment module and the second exhaust aftertreatment module may be configured and arranged substantially mirror-symmetrically at opposing sides of the counterweight module with respect to a central longitudinal axis of the main frame.
摘要:
A snubber for a machine includes a housing, a shaft and a pinion that is coupled to the shaft. The housing is mounted on an implement of the machine. The shaft is rotatably received within the housing and operatively coupled to a movable component of the implement. The snubber also includes a cylinder defining a cavity, a piston slidably received within the cylinder, a rack coupled to the piston, and a hydraulic device. The cylinder is at least partly disposed within the housing. The piston divides the cavity of the cylinder into a first chamber and a second chamber. The rack engages with the pinion to convert a rotation of the shaft into a linear movement of the piston. The hydraulic device is in fluid communication with the cavity and controls a flow of fluid between the first chamber and the second chamber to oppose rotation of the shaft.
摘要:
A light grid system for rope machinery is provided. The light grid system includes one or more light grid assemblies, including one or more sensor frames configured to be coupled to one or more post assemblies and configured to mount adjacent to one or more rope drums. The light grid assemblies also include one or more sensors coupled to the sensor frames, at least a first sensor configured to emit one or more light beams, at least a second sensor configured to receive the light beams. The light beams are positionable a predetermined distance away from the ropes, and the light grid assemblies are configured to transmit a signal to a control module when the light beams are obstructed.
摘要:
Systems and methods for monitoring an electrical energy storage unit and a parameter related to the load and based on the monitoring, if the load parameter is greater than a second rate of change of electrical power for a second component of an electrical power system, providing power from the electrical energy storage unit to the second component until the load parameter and the second component have equivalent rates of change of electrical power.
摘要:
A rear view mirror for a vehicle is disclosed. The rear view mirror includes a continuous reflective surface of varying convexity. The continuous reflective surface is defined by a horizontal quadratic equation and a vertical quadratic equation. Using the two quadratic equations to define the curvature of the continuous reflective surface provides for a relatively flat portion in the middle of the minor that is surrounded by portions of higher convexities. The relatively flat portion assists the operator in depth perception while the surrounding portions of higher convexities further assists the operator in terms of reflecting expanded views and therefore better coverage of blind spots.
摘要:
A dipper assembly includes a dipper, a dipper door, a closure mechanism, and one or more block assemblies. The dipper door is pivotally mounted to the dipper, and has a closed position in which the dipper door covers the dipper bottom. The closure mechanism has a locked position and an unlocked position, and is coupled to the dipper back and the dipper door. In the locked position, the closure mechanism holds the dipper door in the closed position. In the unlocked position, the closure mechanism allows the dipper door to swing away from the closed position. The block assemblies are coupled to the dipper back and limit a rotation of the side link plate to a pre-defined angle that corresponds to the closed position.