Title:
地盤強度の推定方法およびシステム
Document Type and Number:
Japanese Patent JP7120825
Kind Code:
B2
Abstract:
To provide a method and system for estimating ground strength allowing further simple and quick estimation of strengths of various object grounds on land or under water.SOLUTION: Strength of an object ground G can be estimated by using: a pressing load Q calculated on the basis of the magnitude of the hydraulic pressure of a hydraulic cylinder 7 for a boom when pressing the object ground G with an attachment 10 by rotating downward the boom 6 of a hydraulic heavy machine 2 around a rear end rotation center part 6b of the boom 6, a separation distance between a cylinder axial direction CL of the hydraulic cylinder 7 and the rear end rotation center part 6b, and the separation distance between a line of action of the pressing load Q to the object ground G and the rear end rotation center part 6b; or a push-in amount into the object ground G calculated on the basis of a vertical displacement amount of a boom tip part 6c caused by rotation centering around the rear end rotation center part 6b when pressing the object ground G, and the vertical displacement amount of the rear end rotation center part 6b by the rotation centering around a grounding fulcrum of an undercarriage 3 caused by the reaction of pressing.SELECTED DRAWING: Figure 1
Inventors:
Yosuke Tanaka
Tomohiro Morisawa
Shinya Omori
Tomohiro Morisawa
Shinya Omori
Application Number:
JP2018119490A
Publication Date:
August 17, 2022
Filing Date:
June 25, 2018
Export Citation:
Assignee:
Toa Construction Industry Co., Ltd.
International Classes:
E02D1/02; G01N3/00; G01N3/40
Domestic Patent References:
| JP2000136524A | ||||
| JP2017203739A | ||||
| JP2017223096A | ||||
| JP2011252338A | ||||
| JP2019163621A |
Attorney, Agent or Firm:
Clear stream international patent attorney corporation
Daytime Takayoshi
Sakazawa Masao
Daytime Takayoshi
Sakazawa Masao