GB783131A - Level luffing jib crane - Google Patents
Level luffing jib craneInfo
- Publication number
- GB783131A GB783131A GB17767/55A GB1776755A GB783131A GB 783131 A GB783131 A GB 783131A GB 17767/55 A GB17767/55 A GB 17767/55A GB 1776755 A GB1776755 A GB 1776755A GB 783131 A GB783131 A GB 783131A
- Authority
- GB
- United Kingdom
- Prior art keywords
- luffing
- jib
- pulley
- rope
- level
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
- B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
- B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Pulleys (AREA)
Abstract
783,131. Level-luffing jib cranes. MASCHINENFABRIK AUGSBURG - NURNBERG AKT.-GES. June 20, 1955 [June 19, 1954], No. 17767/55. Class 78 (4). The luffing rope 15 of a level luffing jib crane is operated through pulley tackle 11, 12, coupled to tackle 11a, 12a, operating the hoisting rope 20 so that luffing the jib causes compensating changes in the length of the hoisting rope to provide level luffing. The tackle is shown diagrammatically with the pulley tackles spaced, but in the two embodiments illustrated in the Specification the pulley tackles are formed by a single pair of sheave blocks. In one of these embodiments the luffing rope 15 is connected to a point on the jib at the opposite side of the jib pivot from the jib end pulley while in the other embodiment the luffing rope 15 passes over a pulley at the top of the tower and is secured adjacent the jib end pulley.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE783131X | 1954-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB783131A true GB783131A (en) | 1957-09-18 |
Family
ID=6696221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17767/55A Expired GB783131A (en) | 1954-06-19 | 1955-06-20 | Level luffing jib crane |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB783131A (en) |
-
1955
- 1955-06-20 GB GB17767/55A patent/GB783131A/en not_active Expired
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