Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1995-12-22
1997-11-18
Bucci, David A.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
414549, 414555, B60P 164
Patent
active
056881002
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a loading device for containers or the like comprising a pair of loading units to be mounted on a vehicle frame, which loading units each have a telescopic column consisting of a lower leg portion and an extendable head portion, which telescopic column is supported on a bracket so as to be pivoted about a common swivel axis extending in the longitudinal center of the vehicle frame, as well as operating cylinders acting on both sides of the telescopic column and longitudinally adjustable supporting legs pivotally mounted on both sides of the bracket, where the head portion of the telescopic columns carries a cantilever arm comprising an abutment for the connection of a load receiving element, for instance a load carrying harness, which cantilever arm is adapted to perform a swivel movement to both sides about a swivel axis parallel to the swivel axis of the telescopic column.
2. Description of the Prior Art
As is for instance shown in the AT-PS 284 714, the operating cylinders of such loading devices have been movably supported on the supporting legs pivoted about horizontal longitudinal axes and have been acting on the head portion of the telescopic columns, which head portion is itself equipped with the load receiving elements and constitutes the load receiving means. With these known loading devices it is possible to load the containers or other bulky items equally onto both sides of the vehicle frame, and to unload or transfer such items from a separate loading surface to the side onto the ground or to another vehicle standing alongside, but due to the mutual positional and motional dependence of telescopic columns, operating cylinders and supporting legs a very expensive, and a complicated loading system is obtained, which requires a relatively large space for its loading and unloading movements, and when there is only little space, or in the danger zone of a railway contact line or the like, is useful only on a very restricted scale. Moreover, the supporting legs, which are movable in the same swivel plane as the telescopic columns, also require a corresponding lateral space for the swivel movement, which for reaching over vehicles standing alongside or other laterally disposed obstacles often requires additional movable stanchions or the like and thus impairs the desired stability of the support.
In accordance with the FR-A-2 106 592 there already exists a loading means comprising loading units each having a cantilever arm pivotally mounted on a telescopic column, where the two-piece cantilever arm can be swivelled with respect to the telescopic column by means of an operating cylinder, and the telescopic column cooperates with two operating cylinders acting on the head portion that carries the cantilever arm. As a result the telescope is extended with the points of attachment of the operating cylinders and thus changes the angle of attack of the cylinders, so that corrections in height influence the lateral directions and make it impossible to perform a defined operation. In addition, the cantilever arm is used as crane jib adjustable under a load, which must perform an active lifting function, so that the control effort and the uncertainty as regards control are further increased.
SUMMARY OF THE INVENTION
It is therefore the object of the invention to eliminate these deficiencies and to create a loading device of the above described kind, which is characterized by its relatively simple and compact design, its stability and the fact that it requires little space as compared to the loading area.
This object is solved by the invention in that the operating cylinders act on the leg portion of the telescopic column, whose head portion constitutes limit stops for the rigid support of swivel positions of the cantilever arm on both sides, and that the supporting legs are supported so as to be pivoted preferably about swivel axes normal to the swivel axis of the telescopic column and inclined towards the horizontal. Due to t
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patent: 3876088 (1975-04-01), Klaus
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Martin Werner
Schabelreiter Johann
Winter Udo
Wunder Johannes
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