Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1984-01-10
1989-05-16
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
B60P 164
Patent
active
048305669
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a vehicle incorporating its own means for lifting and lowering a load and moving the load laterally of the vehicle, for loading and unloading purposes. Whilst not restricted thereto, it is particularly applicable to the loading and unloading of International Containers.
The object of the invention is to provide an improved vehicle in which the loading means, when in stowed condition, leaves the load-receiving surface of the vehicle substantially unencumbered, such that the load-receiving surface may accommodate loads which extend beyond the loading means, in the logitudinal direction of the load-receiving surface, and may shift such loads from and onto the load-receiving surface at one side of the vehicle.
According to the present invention a vehicle comprises:
(a) a chassis having a load-receiving surface,
(b) a pair of gantries spaced longitudinally on the chassis, each gantry including: by a free end portion thereof to the chassis for movement about an axis disposed longitudinally of the chassis, and a second arm projecting above the chassis, second arm for movement about an axis disposed longitudinally of the chassis, and stowed condition in which an upper surface of the first arm lies at or below the level of the load-receiving surface and a raised position in which the first arm extends above the level of the load-receiving surface,
(c) powered drive means for shifting the cranked members relative to the chassis into the stowed and raised positions, and
(d) powered drive means for moving each jib arm relative to the respective cranked member.
With such a construction, the lenght of the first arm of the cranked member can be of the same order as the width of the load-receiving surface, such that almost all of that width is clear of obstruction above the level of the surface, and the surface can thus receive loads which extend longitudinally beyond the two gantries.
In a preferred arrangement, each gantry has a respective powered drive means, and each jib arm has a respective powered drive means, and all of the drive means are arranged to act in unison, whereby a load may be lifted, moved laterally, and lowered, in a symmetrical manner.
Each drive means may conveniently be a hydraulic ram, and all of the rams arranged in a hydraulic feed circuit having tandem pumps each of which feeds the drive means of the cranked member and associated jib arm of a respective gantry.
The vehicle may further comprise stabiliser beam means, for example two such beams disposed one towards the front end and one towards the rear end of the vehicle. The beam means are extendible and withdrawable laterally of the chassis and have liftable and lowerable jack means thereon. The beams and the jacks have respective hydraulic drive rams included in the hydraulic feed circuit.
The chassis may include load platforms spaced longitudinally thereof, e.g. to the front of and to the rear of the respective gantries, and a removable pallet adapted to be positioned between the gantries, the platforms and the pallet having the load-receiving surface thereon.
The connecting means of each jib arm may comprise a lifting cradle on the jib arm, and means on the cradle for connecting to a bulk transport container and/or to the pallet.
The chassis may have respective locking means on it for locking both the pallet and the container to the chassis.
In a preferred embodiment, the drive means for the cranked members and the drive means for the jib arms are arranged such that in all positions of the cranked members relative to the chassis, the jib arm remains in the same position of angularity with respect to the load-receiving surface, e.g. by appropriate regulation of the extent of flow of the respective feeds of hydraulic fluid to the rams operating the cranked member and the associated jib arm.
Conveniently, the cranked members have their arms cranked substantially at 90.degree. , and in the stowed condition the first arm is substantially parallel to the load-receiving surface whereas in the raised position it is substant
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patent: 3239080 (1966-03-01), Corompt
patent: 3458066 (1969-07-01), Klaus
patent: 3603464 (1971-09-01), Teodorescu
patent: 3958702 (1976-05-01), Hand
patent: 4019642 (1977-04-01), Hammar
Mahy John A.
Stranger Edgar P.
Bucci David A.
Werner Frank E.
Worldwide Trucks Limited
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