吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (6): 1912-1921.doi: 10.13229/j.cnki.jdxbgxb201606021

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Energy-saving technology in rotary starting process of hydraulic excavator

PENG Bei, GAO Yu, FENG Pei-en, QIU Qing-ying   

  1. College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2015-07-29 Online:2016-11-20 Published:2016-11-20

Abstract: A flow-control energy-saving rotary system was proposed to reduce the energy consumption caused by the mismatching between the output flow of the pump and the demand flow of the rotary motor during the rotary starting process of hydraulic excavator. The overflow signal of the overload buffer valve was converted to a pressure signal using a flow control valve, and the pump displacement was adjusted according to the pressure signal. Simulation and experiment results show that the flow-control energy-saving rotary system can effectively reduce the energy consumption during the rotary starting process that over 20% energy can be saved in comparison with the traditional rotary system. The overflow has long been existent, which meets the torque demand during the rotary starting process, and the time of the starting process stays the same with that of the traditional rotary system.

Key words: construction machine, energy-saving, flow matching, hydraulic excavator, rotary, fuzzy-PID control

CLC Number: 

  • TU621
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