吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (4): 597-601.

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Hydro-pneumatic driving system of new type hydraulic pile hammer

L? Jingzhong1, SUI Zhen2, YANG Yonghai3, ZHANG Lanyi3   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China;
    2. College of Communication Engineering, Jilin University, Changchun 130022, China;
    3. Centre of Test Science, Jilin University, Changchun 130022, China
  • Received:2004-03-25 Online:2004-10-01

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Abstract: On the basis of investigating the advantages and disadvantages of the existing pile hammers made in China and abroad, a new design scheme of hydro-pneumatic driving system for the pile hammer was put forward for the purpose of structure compactress manufacture simplicity, low cost and light driving efficiency. The system consist of a double-pole single-action hydraulic cylinder with nitrogen gas to accumulate energy and a transfering oil tank. A set of control valve was used to implement the control guideline "close before open". The developed prototype is characterized by high driving efficiency, compact structure, smooth and reliable operation, demonstrating the feasibility and outstanding character of the scheme. It may provide the technical foundation for developing the equivalent products in our country.

Key words: hydro transmission and control, hydraulic pile hammer, hydro-pneumatic driving, scheme design

CLC Number: 

  • TH137.3
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