Lifting Hydraulic Cylinder Drill without Hoisting Winch
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P634.3+1

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    Abstract:

    Hydraulic driving head core drill is mostly fed by hydraulic cylinder and lifted by hydraulic winch. The lifting hydraulic cylinder drill without hoisting winch has been developed in several countries in recent years, which is different from traditional drill design concept with hydraulic cylinder not only as feeding mechanism but also as lifting mechanism. The heavy winch, crane and pulley block with complex structure are saved. The headframe size of hydraulic cylinder lifting system is small and light with no lifting load and the whole drill has advanced technical and economic index. The paper introduced the Sweden Sandvik shallow drill and Norway RamRig deep-hole drill of MH Co. about the structures and the development and application in some other countries; described the working principle and application characteristic of double hydraulic cylinder lifting and hydraulic cylinder-steel rope speed multiplication mechanism.

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History
  • Received:November 12,2010
  • Revised:June 15,2011
  • Adopted:June 20,2011
  • Online: August 01,2011
  • Published: July 25,2011