Title:
DRILLING RIG
Document Type and Number:
Japanese Patent JP3704604
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inexpensive versatile drilling rig with a simple structure hardly generating a noise in spite of using a hammering by hammer and usable not only for excavation (drilling) but also for geological investigation or penetration test.
SOLUTION: This rig comprises a slide case slidably provided on a leader; a driving means for reciprocating the slide case along the leader; a weight hammer slidably provided on a guide rod vertically fixed within the slide case; a lift for lifting up and falling the weight hammer; a hammer sub provided on the falling line of the weight hammer and stroke by the falling of the weight hammer; and a motor for rotating the hammer sub through a transmission mechanism. An excavation rod is connected to the hammer sub. A striking force is transmitted to the excavation rod by the striking of the hammer sub by the falling of the weight hammer, and a rotating force is transmitted by the rotation of the hammer sub by the drive of the motor.
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Inventors:
Aoki Katsuri
Application Number:
JP2001160493A
Publication Date:
October 12, 2005
Filing Date:
May 29, 2001
Export Citation:
Assignee:
Fuso Industry Co., Ltd.
International Classes:
E21B6/00; E02D1/02; E21B6/06; E21B7/00; (IPC1-7): E21B6/00; E02D1/02; E21B7/00
Domestic Patent References:
| JP1278684A | ||||
| JP57018089U | ||||
| JP60159066U |
Attorney, Agent or Firm:
Sadanobu Shimizu