Structural Design and Performance Analysis of a Lengthened Working Device of Hydraulic Excavator Based on General Hydraulic Cylinder

Aiming at the problem of hydraulic cylinder design difficult, complex processing, we proposed a design method of lengthened of lengthening type working device of excavator based on general-purpose hydraulic cylinder by modifying the working device size and adjusting the hydraulic cylinder hinge point location. Its three-dimensional modeling is built by Pro/E. The dynamics simulation is finished by ADAMS which can verify whether the design scheme satisfy the requirements of excavation height, depth and get the most dangersous working state and the joint force in this state. Through the ADAMS dynamic simulation of the lengthened working device and prototype excavation test, research shows that the lengthened working device design can statisfy the complete machine working performance.