Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (1): 185-191.doi: 10.13278/j.cnki.jjuese.20190046

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Experiment of Real-Time Motion Law of Fluidic Hammer in Full Stroke Based on Laser Triangulation

Li Guolin1, Ge Dong2, Yang Zhenglong2, Zhang Guang2, Peng Jianming2   

  1. 1. College of Computer Science and Technology, Changchun University, Changchun 130022, China;
    2. College of Construction Engineering, Jilin University, Changchun 130026, China
  • Received:2019-03-09 Published:2021-02-02
  • Supported by:
    Supported by the Public Science and Technology Research Funds Projects of Ministry of Land and Resources of China (201311112)

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Abstract: In order to solve the problem of short measuring distance of the existing Hall element measuring system, the full stroke measuring system based on the principle of laser triangulation was developed. This system can provide full scale measurement and real-time observation. The SC-86H fluidic hammer was used to carry out the related tests, and the full stroke data were obtained. The displacement-time curve and velocity-time curve of the fluidic hammer were obtained through analyzing the experimental data, which provided vital insights into the working features of the impact body. The results show that the irregular movement occurs in the initial stage of the return stroke. This unstable state improves the cycle time, and accordingly reduces the impact frequency. The actual damping stroke is not sensitive to the pump volume,when the pump volume increases from 80 L/min to 220 L/min, the actual damping stroke varies only from 5.9 mm to 6.8 mm. The actual stroke will slightly increase the actual damping stroke,as demenstrated in the test,the actual damping stroke only increased by 7% when the structure stroke increased by 57% (70-110 mm).The experiment shows that this system can measure the whole stroke of the hammer and record the movement state of the hammer in real time.

Key words: fluidic hammer, laser measuring system, motion mechanism

CLC Number: 

  • TE242
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