Implements or apparatus for applying pushing or pulling force – Vehicle-body lifters
Patent
1988-07-29
1990-02-27
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Vehicle-body lifters
B66F 726
Patent
active
049039466
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a portable and easily transportable device for substantially vertical movement of a container, preferably movement between the ground and the load deck of a vehicle. During transport the four lower corners with their corner boxes arranged on the containers are removably connected to fastener means arranged on the load vehicle, these means engaging in bottom holes in the lower corner boxes.
Lifting devices for containers are known in the form of separate devices or lifting columns which are attached to the four corners of the container using the upper and lower corner boxes and their openings The lifting devices are removably coupled to the side openings in the upper and lower boxes of the respective corner. Such devices are individually driven, either manually or with the aid of drive units, often of the hydraulic type, arranged on each device.
A known device of this kind is described in the German Patent Application No. P 31 38 443.
The known devices are troublesome to use particularly in primitive conditions, e.g. use out in the open or in terrain, in loading or unloading containers at optional places, possibly without the availability of an outside power source, such as electricity or the like.
The different lifting devices in known lifting arrangements are also often heavy and require the availability of different aids for handling them. Similarly, there is generally required the cooperation of several persons for fitting and removing the lifting apparatus and for controlling the four lifting devices for co-action in a desired mode. It will be seen from what has now been said that unloading or loading from a load vehicle is a complicated and timeconsuming procedure.
Several drawbacks in known devices are removed with the aid of the invention and simple and effective handling is provided by the distinguishing features disclosed in the accompanying claims.
The invention will now be described in more detail with reference to the accompanying drawings, where
FIG. 1 is a perspective view of a vehicle and a lifting device in accordance with the invention,
FIG. 2 is a lifting column in side view in the direction II in FIG. 1,
FIG. 3 the lifting column seen in the direction III in FIG. 1 and a part of the adjacent corner and corner boxes of the container,
FIG. 4 is, lifting column of simple implementation,
FIG. 5 is an end wall view of the container and lifting column,
FIG. 6 is a side view of the container and lifting column,
FIG. 7 illustrates a schematic hydraulic system with four lifting columns, hydraulic unit and control means for operation,
FIG. 8 illustrates an alternative embodiment of the hydraulic system,
FIG. 9 illustrates a modified embodiment of the system in FIG. 8,
FIG. 10 illustrates a further embodiment of the system,
FIG. 11 illustrates an adjusting cylinder built into a lifting column,
FIG. 12 illustrates an apparatus for transporting all the four lifting columns included in the container lifting apparatus,
FIG. 13 illustrates a lifting apparatus with lifting columns and control means, as well as connecting lines therebetween, FIG. 14 illustrates a lifting column with a hydraulic unit mounted thereon, which is driven by an electric motor, FIG. 15 illustrates a lifting column with an attachment means displaceable along it for containers, load decks or exchangeable decks for vehicles, FIG. 16 illustrates the position where the attachment is connected to a deck, and FIG. 17 illustrates control means with controls, drive units in the four lifting columns and connecting lines between all components.
In FIG. 1 the numeral 1 denotes a container which is placed on a trailer 2, towed by a truck 3 with the aid of a towing means 4 between truck and trailer.
Lifting columns are applied in pairs at the four corners of the container, columns 10 and 11 on the right hand side of the container at its rearward and forward corners respectively, while columns 12 and 13 are placed in a corresponding way on the other side of the container at its rearward and forward corners. The
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patent: 4045000 (1977-08-01), Mai
patent: 4053073 (1977-10-01), Franchin
patent: 4765594 (1988-08-01), Riedl et al.
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