Title:
PIPE STRIKING APPARATUS
Document Type and Number:
Japanese Patent JPS6040425
Kind Code:
A
Abstract:
Apparatus for driving an open-ended pipe 7, which has a driving shoe 6 at its leading end, through the ground comprises a driving member 2, 3 to which percussive driving forces are applied by a driving mechanism. Instead of fitting the part 3 of the driving member directly into the rear end of the pipe 7 as is usual an intermediate component 8 is interposed between the pipe and the part 3. The component 8 has soil outlet openings 10 and a deflector 16 to allow soil which enters the pipe 7 through the shoe 6 as driving proceeds to pass through and out of the pipe without stopping the driving. The passage of the soil through the pipe 7 is assisted by water supplied under pressure through a pipe 11 to an annular duct 12 in the shoe 6, when the water flows inwards through nozzles 13 and then rearwards through the pipe 7 carrying the soil with it.
Inventors:
PAURU SHIYUMITSUTO
Application Number:
JP15115384A
Publication Date:
March 02, 1985
Filing Date:
July 20, 1984
Export Citation:
Assignee:
SCHMIDT PAUL
International Classes:
E02D7/00; E02D7/26; E21B7/04; E21B7/20; E21B10/02; E21B17/18; E21B21/00; (IPC1-7): E02D7/00; E02D7/26
Attorney, Agent or Firm:
Teruo Taniyama
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