JPH0560031B2 - - Google Patents

Info

Publication number
JPH0560031B2
JPH0560031B2 JP18402885A JP18402885A JPH0560031B2 JP H0560031 B2 JPH0560031 B2 JP H0560031B2 JP 18402885 A JP18402885 A JP 18402885A JP 18402885 A JP18402885 A JP 18402885A JP H0560031 B2 JPH0560031 B2 JP H0560031B2
Authority
JP
Japan
Prior art keywords
rod
sleeve
swing arm
recess
crawler drill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP18402885A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61211492A (ja
Inventor
Katsuhiko Iijima
Mitsuo Nunokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP18402885A priority Critical patent/JPS61211492A/ja
Publication of JPS61211492A publication Critical patent/JPS61211492A/ja
Publication of JPH0560031B2 publication Critical patent/JPH0560031B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP18402885A 1985-08-23 1985-08-23 クロ−ラドリルのロツド交換装置 Granted JPS61211492A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18402885A JPS61211492A (ja) 1985-08-23 1985-08-23 クロ−ラドリルのロツド交換装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18402885A JPS61211492A (ja) 1985-08-23 1985-08-23 クロ−ラドリルのロツド交換装置

Publications (2)

Publication Number Publication Date
JPS61211492A JPS61211492A (ja) 1986-09-19
JPH0560031B2 true JPH0560031B2 (enrdf_load_html_response) 1993-09-01

Family

ID=16146086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18402885A Granted JPS61211492A (ja) 1985-08-23 1985-08-23 クロ−ラドリルのロツド交換装置

Country Status (1)

Country Link
JP (1) JPS61211492A (enrdf_load_html_response)

Also Published As

Publication number Publication date
JPS61211492A (ja) 1986-09-19

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