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Title:
HYDRAULIC JACK EXPANSION-TYPE ROTARY INSERTION DEVICE FOR CIRCULAR PIPE
Document Type and Number:
WIPO Patent Application WO/2018/186691
Kind Code:
A1
Abstract:
The present invention provides a hydraulic jack expansion-type rotary insertion device, for a circular pipe, capable of smoothly rotating and inserting a circular pipe, which is made of plastic or concrete vulnerable to torsional shear failure during rotation, into the ground while maintaining a clamping force evenly generated over the entirety of the inner wall of the pipe. The hydraulic jack expansion-type rotary insertion device for a circular pipe, according to a suitable embodiment of the present invention, is a rotary insertion device used for rotating and inserting a circular pipe, and is characterized by comprising: a rotating head which receives torque from the outside; one or more hollow shafts arranged in series downward along the central axis of the rotating head; shaft connection sockets which interconnect the rotating head and the first hollow shaft that is in contact with the rotating head, and the remaining adjacent hollow shafts, to thereby transmit the torque of the rotating head; and one or more clamp modules which are installed in the hollow shafts and pressed against the inner surface of the circular pipe by hydraulic pressure generated in the rotating head side to thereby generate clamping force.

Inventors:
KIM, Kyu Sang (201ho, 22-11 Bokjeong-ro 134beon-gil, Sujeong-gu,,Seongnam-si, Gyeonggi-do, 13112, KR)
Application Number:
KR2018/004004
Publication Date:
October 11, 2018
Filing Date:
April 05, 2018
Export Citation:
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Assignee:
KIM, Kyu Sang (201ho, 22-11 Bokjeong-ro 134beon-gil, Sujeong-gu,,Seongnam-si, Gyeonggi-do, 13112, KR)
International Classes:
E02D7/22
Foreign References:
JP2008214890A2008-09-18
JP2006037619A2006-02-09
KR20130011776A2013-01-30
JP2004100260A2004-04-02
JPH08144280A1996-06-04
Attorney, Agent or Firm:
JEONG, Nam Jin (2F. Wooyoung Bldg, 67 Gangnam-daero 94-gil,,Gangnam-gu, Seoul, 06131, KR)
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