Actuator assembly for a heavy construction machine

Abstract

The disclosure herein generally relate to heavy construction machines and more particularly to an actuator assembly for the heavy construction machine such as but not limited to an excavator. The actuator assembly () includes a main cylinder assembly () and a plunger cylinder assembly () disposed parallel to the main cylinder assembly (). The main cylinder assembly () is a double acting cylinder assembly, and the plunger cylinder assembly () is a single acting cylinder assembly. The actuator assembly () includes three chambers (A,B,A) adapted to be selectively coupled with at least one of a high pressure (HP) hydraulic line, a medium pressure (MP) hydraulic line and a low pressure hydraulic line (LP) based on load requirement of actuator assembly (). The actuator assembly () is configured to reduce throttling loss at control valves thereby reducing an overall power consumption of heavy construction machine.