JPS5572521A - Rope type expansion arm in hydraulic shovel - Google Patents
Rope type expansion arm in hydraulic shovelInfo
- Publication number
- JPS5572521A JPS5572521A JP14503378A JP14503378A JPS5572521A JP S5572521 A JPS5572521 A JP S5572521A JP 14503378 A JP14503378 A JP 14503378A JP 14503378 A JP14503378 A JP 14503378A JP S5572521 A JPS5572521 A JP S5572521A
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- pipes
- stoppers
- pipe
- expansion arm
- 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
Links
Abstract
PURPOSE: To obtain said expansion arm which does not need so much strength compared with that of a horizontal expansion arm, is of light weight and capable of great expansion by assembling a rope type expansion arm in the form of a telescople and expanding it by means of a lifting rope.
CONSTITUTION: Expansion arms 10 are assembled in the form of a telescope so that the inmost pipe 10a with square or circular section is inserted into the inner wall of the 2nd pipe adjoining the outer pipe so as to be free to slide along it. Stoppers are mounted on the inside walls of the ends of the respective outside pipes of the expansion pipes 10. Expansion stoppers 12 which are in contact with the stoppers 11 and prevent both the pipes from sliding in the expansion direction are fixed at the upper end parts of the adjoining inner pipes. Shrinkage direction stoppers 13 which limit slide in the shrinkage direction of both pipes are fixed at the lowest parts. The uppermost ends of the inmost and the outmost pipe of the expansion pipes are connected by a lifting rope.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14503378A JPS5572521A (en) | 1978-11-24 | 1978-11-24 | Rope type expansion arm in hydraulic shovel |
| CA339,500A CA1132101A (en) | 1978-11-24 | 1979-11-08 | Excavator having telescopic arm assembly |
| FR7928730A FR2442304A1 (en) | 1978-11-24 | 1979-11-21 | TUBULAR DEVICE FOR USE AS AN ARM IN AN EXCAVATOR |
| DE19792947161 DE2947161A1 (en) | 1978-11-24 | 1979-11-22 | ROD AS AN ARM FOR AN EXCAVATOR |
| US06/327,911 US4436476A (en) | 1978-11-24 | 1981-12-07 | Rod device for use as an arm of an excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14503378A JPS5572521A (en) | 1978-11-24 | 1978-11-24 | Rope type expansion arm in hydraulic shovel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21372886A Division JPS62170618A (en) | 1986-09-12 | 1986-09-12 | Rocking expandible arm in oil-pressure shovel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5572521A true JPS5572521A (en) | 1980-05-31 |
| JPS6217046B2 JPS6217046B2 (en) | 1987-04-15 |
Family
ID=15375847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14503378A Granted JPS5572521A (en) | 1978-11-24 | 1978-11-24 | Rope type expansion arm in hydraulic shovel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5572521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60253696A (en) * | 1984-05-29 | 1985-12-14 | 株式会社ジャパニック | Drilling machine for vertical pit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5033844U (en) * | 1973-07-23 | 1975-04-11 | ||
| JPS51735U (en) * | 1974-06-18 | 1976-01-06 |
-
1978
- 1978-11-24 JP JP14503378A patent/JPS5572521A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5033844U (en) * | 1973-07-23 | 1975-04-11 | ||
| JPS51735U (en) * | 1974-06-18 | 1976-01-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60253696A (en) * | 1984-05-29 | 1985-12-14 | 株式会社ジャパニック | Drilling machine for vertical pit |
| JPH0348969B2 (en) * | 1984-05-29 | 1991-07-26 | Hikoma Seisakusho Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6217046B2 (en) | 1987-04-15 |
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