Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (4): 551-556.DOI: 10.12068/j.issn.1005-3026.2015.04.021

• Mechanical Engineering • Previous Articles     Next Articles

Resistance Characteristics of Hydraulic Excavator

REN Zhi-gui1, CHEN Jin1, WANG Shu-chun2, PANG Xiao-ping1   

  1. 1.State Key Laboratory of Mechanic Transmission, Chongqing University, Chongqing 400030, China; 2.SANY Heavy Industry Co., Ltd., Kunshan 215300, China.
  • Received:2014-04-23 Revised:2014-04-23 Online:2015-04-15 Published:2014-11-07
  • Contact: REN Zhi-Gui
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Abstract: Based on three kinds of conventional digging patterns, the variation regularities of digging resistance with time and digging trajectory in a single digging process were studied. The characteristics of the resistance coefficient and the resistance moment coefficient in different stages of the digging process were obtained, which were based on the comparison of multiple experimental results. Based on the variation regularities of direction angles, the impact of each component motion on digging resistance direction was investigated. The distribution characteristics, the main value range and the probability density of the resistance coefficient, the resistance moment coefficient, the resistance angle and the difference angle in different value range of digging resistance were calculated on the basis of the statistical theory. The results lay a foundation for calculation of theoretical digging force and design and optimization of device.

Key words: hydraulic excavator, digging resistance, resistance angle, main value range, probability density

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