Material or article handling – Marine loading or unloading system – Marine vessel to/from shore
Patent
1986-04-16
1988-04-12
Paperner, Leslie J.
Material or article handling
Marine loading or unloading system
Marine vessel to/from shore
37190, 198509, 198518, 414143, B65G 6528, B65G 6760
Patent
active
047370610
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a mobile bucket mechanism for the vertical or inclined collection and conveyance of bulk materials from ships or storage sites, the mechanism including a supporting structure for the return sheaves of the chains carrying the circulating buckets, with the buckets receiving the bulk material during a forward movement of the supporting structure.
To collect the bulk material, the known mobile bucket mechanisms are dipped into the bulk material and are then moved into the advancing direction transversely to the direction of movement of the buckets. In this case, the buckets perform a strong cutting function. Since the cutting and advancing forces are fully transferred from the buckets and the chain sheaves to the supporting structure of the bucket mechanism and the return sheaves for the chains, wear of buckets, chains, guides and return sheaves is unavoidable. For that reason such bucket mechanisms are of robust design which, however, results in a great amount of dead weight which is a drawback, particularly if the bucket mechanism is suspended from the tip of the cantilever arm of a ship's unloading apparatus. Moreover, such wear results in work interruption and the need for replacement parts, thus increasing operating and maintenance costs, reducing service life and correspondingly increasing layover costs for ships.
SUMMARY OF THE INVENTION
It is the object of the invention to substantially free the buckets and chain guides of a mobile bucket mechanism including a supporting structure for return sheaves for the chains carrying the circulating buckets, with the buckets collecting bulk material during advancing movement of the supporting structure, and a feeding device rotatably displaced and driven by the supporting structure for cutting into the bulk material and feeding it to the buckets, from the stresses of the advancing movement.
This is accomplished by providing that the feeding device is composed of a stationary, cylindrical body which surrounds the lower receiving end of the supporting structure in the manner of a jacket as well as the paths of the buckets while leaving free their lower point of reversal and which is provided with an opening in the region of the upwardly moving buckets, and the cylindrical body is surrounded by a cutting head which is equipped with essentially radially oriented blades that are rotatable with respect to the cylindrical body with cutting head supplying the bulk material to the opening.
In this way, it is accomplished that the buckets of the bucket mechanism perform only a scooping function while the cutting forces are absorbed by an independent element which simultaneously supplies the bulk material to the bucket mechanism and which is arranged in such a manner that the cutting forces for loosening the bulk material and the forces resulting from the advancing movement are dissipated directly into the supporting structure of the bucket mechanism. This element is the driven cutting head whose blades cut the bulk material independently of the advancing direction of the supporting structure and convey it to the opening of the stationary cylindrical jacket which is surrounded by the rotating cutting head.
In accordance with further features of the invention with respect to the configuration of the blades of the cutting head, the blades of the cutting head extend to below the stationary jacket, the blades are provided with inwardly oriented extensions, and the blades are provided with divergingly oriented cutting edges and the cutting head is reversibly driven. Recommended structural features of the cutting head and its connection to the supporting structure of the bucket mechanism include:
a. the supporting structure is provided with a supporting ring at which is fastened the stationary jacket, and an upper ring of a ball bearing equipped rotary connection is connected with the supporting structure, a lower ring of the ball bearing equipped rotary connection supporting the cutting head.
b. the lower ring of the ball
REFERENCES:
patent: 3616890 (1971-11-01), Pradon
patent: 4261678 (1981-04-01), Kruger
Paperner Leslie J.
PBB Weserhutte AG
LandOfFree
Mobile bucket conveyor for bulk materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile bucket conveyor for bulk materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile bucket conveyor for bulk materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1426365