Title:
DIAMETER-ENLARGING SYSTEM FOR EXPANDABLE PILE
Document Type and Number:
WIPO Patent Application WO/2016/024673
Kind Code:
A1
Abstract:
The present invention relates to a diameter-enlarging system for an expandable pile, comprising: a pile main body; a diameter-enlarging member of which the diameter is enlarged by being coupled to a lower portion of the pile main body; a pressing body for enlarging the diameter of the diameter-enlarging member; and a pressing part for delivering a pressing force of the pressing body to the diameter-enlarging member, wherein the allowed supporting force of the pile can be increased by rapidly expanding the diameter of and cutting the ground at a front tip of the pile while forming a pile enlargement part. According to the present invention, the diameter-enlarging member is coupled to the lower portion of the pile main body and comprises: an upper guide member provided with an upper through-hole at the center; a lower guide member provided below the upper guide member and so as to be a specific distance apart from the upper guide member; a connection member, which is coupled so as to communicate with the upper through-hole and is provided with a plurality of access holes on an outer circumferential surface, for connecting the upper guide member and the lower guide member; and arc-shaped expanding bodies, which are provided in a plurality along the outer circumferential surface of the connection member between the upper guide member and the lower guide member, and which are provided with a cutting tip on the outer side, wherein the pressing part is configured so that a rear end is positioned inside the connection member and a front end is inserted into the access holes on the connection member so as to be brought into close contact with the rear end of the expanding bodies, to expand the expanding bodies out of the upper and lower guide members by pushing the expanding bodies while the pressing member protrudes out of the connection member due to the pressing of the pressing body, and wherein the pressing body presses the rear end of the pressing part by moving downward through the upper through-hole in the upper guide member.
Inventors:
YIM SEONG DAE (KR)
Application Number:
PCT/KR2014/011689
Publication Date:
February 18, 2016
Filing Date:
December 02, 2014
Export Citation:
Assignee:
SAMIL ENGINEERING & CONSTRUCTION CO LTD (KR)
International Classes:
E02D5/54
Foreign References:
| KR20140089680A | 2014-07-16 | |||
| JP2009019448A | 2009-01-29 | |||
| KR20130057161A | 2013-05-31 | |||
| KR20130013899A | 2013-02-06 | |||
| JP2008013971A | 2008-01-24 |
Attorney, Agent or Firm:
TAESAN PATENT & LAW FIRM (KR)
특허법인 태산 (KR)
특허법인 태산 (KR)
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