Title:
PENETRATION TESTER
Document Type and Number:
Japanese Patent JP3898867
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a penetration tester, capable of obtaining accurate test data by obtaining loss due to the resistance of soil, etc.
SOLUTION: In the penetration tester, test data is obtained in the process of the loading of a load on a penetration rod 7 and its penetration into the ground. The penetration tester is provided with a control unit for detecting rotation torque T to act on the penetration rod 7, a penetration speed vs of the penetration rod 7, and a rotation movement speed vr of the circumferential surface of the penetration rod 7, to obtain a load resistance P1 from them, and to obtain a load P2 due to the weight of the rod part 7b of the penetration rod 7. The control unit is constituted, so as to correct test data, etc., according to the load resistance P1 and load P2.
Inventors:
Osamu Shikata
Makino Isao
Makino Isao
Application Number:
JP2000038524A
Publication Date:
March 28, 2007
Filing Date:
February 16, 2000
Export Citation:
Assignee:
Nitto Seiko Co., Ltd.
International Classes:
E02D1/02; G01N3/40; (IPC1-7): G01N3/40; E02D1/02
Domestic Patent References:
| JP11200355A | ||||
| JP9242459A |