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Research on Disc Spring Buffering the Backward Impact of Piston of Liquid-Jet Hydraulic Hammer Based on LS-DYNA
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College of Construction Engineering, Jilin University,School of Computer Science and Technology, Changchun University,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University

Clc Number:

P634.4

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    Abstract:

    In order to reduce the damage to fluidic element caused by stress waves from impacting cylinder in a return-stroke of the fluidic hydraulic hammer piston to prolong the life of the fluidic element, a disc spring buffer structure in the cylinder was proposed to absorb the striking energy of hammer stroke. The simulation analysis was carried out on the piston return-stroke by the means of LS-DYNA display dynamic analysis to study the effect of the disc spring buffer on the stress state of bi-stable fluidic amplifier. The results show the feasiblility of disc spring buffer structure in the actual work of hydraulic hammer, the maximum stress can be decreased by 40%~57% in bi-stable fluidic amplifier and the stress state of fluidic element is effectively improved.

    Reference
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History
  • Received:December 20,2015
  • Revised:December 20,2015
  • Adopted:April 07,2016
  • Online: May 12,2016
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