JPS57101110A - Sequential operating device of multistage boom - Google Patents

Sequential operating device of multistage boom

Info

Publication number
JPS57101110A
JPS57101110A JP17624280A JP17624280A JPS57101110A JP S57101110 A JPS57101110 A JP S57101110A JP 17624280 A JP17624280 A JP 17624280A JP 17624280 A JP17624280 A JP 17624280A JP S57101110 A JPS57101110 A JP S57101110A
Authority
JP
Japan
Prior art keywords
boom
stopper
extended
guide
maximum
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.)
Granted
Application number
JP17624280A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6353113B2 (enExample
Inventor
Yuji Imuda
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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry 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 Shin Meiva Industry Ltd filed Critical Shin Meiva Industry Ltd
Priority to JP17624280A priority Critical patent/JPS57101110A/ja
Publication of JPS57101110A publication Critical patent/JPS57101110A/ja
Publication of JPS6353113B2 publication Critical patent/JPS6353113B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
JP17624280A 1980-12-12 1980-12-12 Sequential operating device of multistage boom Granted JPS57101110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17624280A JPS57101110A (en) 1980-12-12 1980-12-12 Sequential operating device of multistage boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17624280A JPS57101110A (en) 1980-12-12 1980-12-12 Sequential operating device of multistage boom

Publications (2)

Publication Number Publication Date
JPS57101110A true JPS57101110A (en) 1982-06-23
JPS6353113B2 JPS6353113B2 (enExample) 1988-10-21

Family

ID=16010122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17624280A Granted JPS57101110A (en) 1980-12-12 1980-12-12 Sequential operating device of multistage boom

Country Status (1)

Country Link
JP (1) JPS57101110A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100533415B1 (ko) * 2000-12-22 2005-12-05 현대중공업 주식회사 크레인 전기 붐 선택 스위치에 의한 붐 순차적 신장／수축장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026146U (enExample) * 1973-07-05 1975-03-26
JPS5241529A (en) * 1976-09-16 1977-03-31 Mamiya Koki Kk Automatic diaphragm device
JPS55101594A (en) * 1979-01-26 1980-08-02 Unic Corp Stretching apparatus for 33stage boom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026146U (enExample) * 1973-07-05 1975-03-26
JPS5241529A (en) * 1976-09-16 1977-03-31 Mamiya Koki Kk Automatic diaphragm device
JPS55101594A (en) * 1979-01-26 1980-08-02 Unic Corp Stretching apparatus for 33stage boom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100533415B1 (ko) * 2000-12-22 2005-12-05 현대중공업 주식회사 크레인 전기 붐 선택 스위치에 의한 붐 순차적 신장／수축장치

Also Published As

Publication number Publication date
JPS6353113B2 (enExample) 1988-10-21

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