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
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)
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 (cg-RX-API-DMAC7.html) | 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 (cg-RX-API-DMAC7.html) |
Families Citing this family (1)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512912Y2 (cg-RX-API-DMAC7.html) * | 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 |
-
1980
- 1980-12-12 JP JP17624280A patent/JPS57101110A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57101110A (en) | 1982-06-23 |