JPS54140347A - Electric system stringing method for boom of crane - Google Patents
Electric system stringing method for boom of craneInfo
- Publication number
- JPS54140347A JPS54140347A JP4740778A JP4740778A JPS54140347A JP S54140347 A JPS54140347 A JP S54140347A JP 4740778 A JP4740778 A JP 4740778A JP 4740778 A JP4740778 A JP 4740778A JP S54140347 A JPS54140347 A JP S54140347A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- crane
- electric system
- cables
- ruggedness
- 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.)
- Pending
Links
Landscapes
- Jib Cranes (AREA)
Abstract
PURPOSE: To string electric system cables without damaging them, in a device that adjusts the ruggedness and expansion and contraction of a boom of a crane by electric system signals by controlling an oil pressure system.
CONSTITUTION: A crane is provided with a boom 10 supported by means of a boom supporting portion material 12, to which a gear 11 for turning is fastened, and a turning shaft 13 supported to a body 14, which is fixed to a car rear body (Illustration is omitted), in a revolution-free shape is tightly attached to a center portion of said gear 11. The boom 10 is turned by the drive of a motor 15, expanded and contracted by means of a boom 19 for expansion and contraction and undulated by means of a boom 20 for ruggedness. These booms are drive controlled by means of an oil pressure circuit containing magnet valves 22, 23. In this case, the damage of cables 27W29 for electric signals connected to the magnet valves 22, 23 can be prevented because the cables 27W29 are pierced into a pipe 30 mounted into the shaft 13.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4740778A JPS54140347A (en) | 1978-04-20 | 1978-04-20 | Electric system stringing method for boom of crane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4740778A JPS54140347A (en) | 1978-04-20 | 1978-04-20 | Electric system stringing method for boom of crane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54140347A true JPS54140347A (en) | 1979-10-31 |
Family
ID=12774258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4740778A Pending JPS54140347A (en) | 1978-04-20 | 1978-04-20 | Electric system stringing method for boom of crane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54140347A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826805U (en) * | 1971-08-03 | 1973-03-31 | ||
JPS5222186A (en) * | 1975-08-13 | 1977-02-19 | Toshiba Mach Co Ltd | Automatic device of trimming machine |
-
1978
- 1978-04-20 JP JP4740778A patent/JPS54140347A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826805U (en) * | 1971-08-03 | 1973-03-31 | ||
JPS5222186A (en) * | 1975-08-13 | 1977-02-19 | Toshiba Mach Co Ltd | Automatic device of trimming machine |
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