JPS6353113B2 - - Google Patents

Info

Publication number
JPS6353113B2
JPS6353113B2 JP55176242A JP17624280A JPS6353113B2 JP S6353113 B2 JPS6353113 B2 JP S6353113B2 JP 55176242 A JP55176242 A JP 55176242A JP 17624280 A JP17624280 A JP 17624280A JP S6353113 B2 JPS6353113 B2 JP S6353113B2
Authority
JP
Japan
Prior art keywords
boom
guide
side wall
elevating member
fixed
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
Application number
JP55176242A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57101110A (en
Inventor
Juji 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 JPS57101110A (en) 1982-06-23
JPS6353113B2 true 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)

Families Citing this family (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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512912Y2 (enExample) * 1973-07-05 1980-03-22
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

Also Published As

Publication number Publication date
JPS57101110A (en) 1982-06-23

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