Title:
振動センサ機構
Document Type and Number:
Japanese Patent JP7237663
Kind Code:
B2
Abstract:
To provide a vibration sensor mechanism provided with a pilot sensor allowing stable arrangement adjacent to a rear surface side of a drilling bit to drill the ground.SOLUTION: A vibration sensor mechanism 1 arranged between a drill machine provided with a drilling bit and a vibration generating mechanism 22 generating impacts on the drilling bit and a drilling rod provided with a drilling rod body 5 having a hollow cylindrical body is provided with: a case rod 14 of which one end part its rear end part of the drill machine is inserted to for their connection and of which the other end part the drilling rod is connected; a sensor case 12 formed in an outer shape circumscribed on an inner periphery of the case rod 14; and a pilot sensor 10 received in a hollow part of the sensor case 12 and receiving bid vibration generated when the drilling bit drills the ground, in which diameter-reduced part 141 with a smaller section than the outer shape of the sensor case 12 is formed in a hollow part of the case rod 14 and the sensor case 12 is pressed and secured by the diameter-reduced part 141 and an end part of the drill machine in the hollow part of the case rod 14.SELECTED DRAWING: Figure 2
Inventors:
Tohru Kuwahara
Nobuto Yamada
Toshiba Takashi
Shuichi Shinmachi
Nobuto Yamada
Toshiba Takashi
Shuichi Shinmachi
Application Number:
JP2019042519A
Publication Date:
March 13, 2023
Filing Date:
March 08, 2019
Export Citation:
Assignee:
Obayashi Corporation
Japan Underground Exploration Co., Ltd.
Japan Basic Technology Co., Ltd.
Japan Underground Exploration Co., Ltd.
Japan Basic Technology Co., Ltd.
International Classes:
E21D9/00; E21D9/093
Domestic Patent References:
| JP2015531440A | ||||
| JP10008869A | ||||
| JP2003269068A | ||||
| JP2017066646A | ||||
| JP2003193786A | ||||
| JP2003184065A | ||||
| JP2017128881A | ||||
| JP2005226388A | ||||
| JP2003066155A | ||||
| JP2015081471A |
Foreign References:
| CN106703682A |
Attorney, Agent or Firm:
Patent Attorney Corporation Isshiki International Patent Office