PILE RAPID LOADING TESTING DEVICE

WIPO Patent Application WO/2019/225023

A1

Provided is a pile rapid loading testing device with which it is possible to quickly catch, mid-air, a weight that has fallen onto a pile head and bounced. A weight-catching device 5, for catching, mid-air, a weight 3 which has fallen onto a pile head a and bounced, is installed. The weight-catching device 5 comprises: a clamp case 9 having a holder inscription hole 15, in which the inner circumferential surface forms a tapered surface that gradually decreases in diameter downwards; a movable body holder 8 disposed above the clamp case 9, the movable body holder 8 falling and becoming inscribed in the holder inscription hole 15; and a permanent electromagnetic holder 10 disposed above the movable body holder 8, the permanent electromagnetic holder 10 attracting the movable body holder 8 only when generating a magnetic force. The movable body holder 8 comprises a holder body 11 and a plurality of balls 12 which, at the same time as falling into the holder inscription hole 15, are pushed by the inner circumferential surface 15a of the holder inscription hole 15, and clamp a weight-catching rod 7 extending from a weight 3.

TAKANO KOUSAKU (JP)
HOJO YUTAKA (JP)
KAMEI SHUICHI (JP)
KOBAYASHI GO (JP)

PCT/JP2018/029904

November 28, 2019

August 09, 2018

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JIBANSHIKENJO CO LTD (JP)

E02D1/00; E02D7/00

JP2009249858A	2009-10-29
JPS60139835U	1985-09-17
JP2005233910A	2005-09-02
JP2004317364A	2004-11-11
JPS4736684B1

KUMON, Takashi et al. (JP)

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