Hydraulic System for an Earth Moving Machine

摘要

A hydraulic system for providing hydraulic power to the work implements and subassemblies on an earth-moving machine such as a loader includes a first hydraulic pump and a second hydraulic pump. The first hydraulic pump can be associated with a lift circuit including a lift arm that can be raised and lowered with respect to the machine. The second hydraulic pump can be associated with both a tilt circuit for tilting a bucket pivotally connected to the lift arm and a steering circuit for steering the machine. The lift circuit and the tilt and steering circuits can be operated concurrently and independently of each other due to the arrangement of the first hydraulic pump and the second hydraulic pump.

主权项

1. An earth-moving machine comprising:
a frame supported on a plurality of traction components that are steerable with respect to the frame by operation of a hydraulic steering assembly; a lift arm pivotally connected to the frame, the lift arm adapted to be raised and lowered with respect to the frame; and a bucket pivotally connected to the lift arm, the bucket adapted to be tilted with respect to the lift arm; a first hydraulic pump operably associated with the lift arm to actuate the lift arm; and a second hydraulic pump operably associated with both the plurality of traction components to actuate steering of the plurality of traction components and the bucket for tilting the bucket.