Title:
【発明の名称】地盤の動圧密用装置
Document Type and Number:
Japanese Patent JP2890150
Kind Code:
B2
Abstract:
PURPOSE:To separate and hang up a weight sucked to the ground from the ground even by a small-sized crane regarding the device for dynamic consolidation of the ground compacting the ground by dropping the hung-up weight. CONSTITUTION:A compressed-air discharge mechanism 2 installed on the top face side of a weight 1 freely suspended to a wire rope 21 is supported to a plurality of guide shafts 6 disposed in upright from the weight 1 by springs 9 for return so that a weight 7 is freely lifted and lowered. An air chamber 10 with each non-returning check valve 16, 17 is mounted between the weight 7 and the weight 1. The weight 1 falls and collides with the ground G, the weight 7 compresses the springs 9 for return and the air chamber 10 by inertia, the compressed air is press-fitted between the base 1b of the weight and the ground G through the exhaust hole 3 of the weight 1 from the check valve 17 without through the closed check valve 16, and the suction of the weight is released.
Inventors:
SHIGIHARA ROKURO
MIZUNO SEISHIRO
MIZUNO SEISHIRO
Application Number:
JP33754491A
Publication Date:
May 10, 1999
Filing Date:
November 27, 1991
Export Citation:
Assignee:
NIPPON KOKUDO KAIHATSU KK
International Classes:
E02D3/046; (IPC1-7): E02D3/046
Domestic Patent References:
| JP5797154U |
Attorney, Agent or Firm:
Yoshio Saito