Material or article handling – Device for emptying portable receptacle – For emptying contents thereof into portable receiving means
Patent
1998-01-15
1999-11-23
Keenan, James W.
Material or article handling
Device for emptying portable receptacle
For emptying contents thereof into portable receiving means
414546, 414733, B65F 306
Patent
active
059889705
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a refuse loader arm assembly and more particularly to a loader arm assembly for loading refuse contained in a bin into a larger storage chamber. The refuse loader arm may be mounted on a refuse collection/compaction vehicle.
BACKGROUND ART
It is known to construct refuse loader arm assemblies utilising the principle of pivotally extendible and retractable arms. The arm assembly may include two or more pivotally connected limb members and terminate in a grab device adapted to grab the bin containing refuse. The limb members may be actuated so as to cause the arm assembly to extend pivotally towards the bin so that the grab device will be in a position to grab the bin. Once grabbed, the bin may be lifted to a dumping position over the refuse storage chamber in the collection/compaction vehicle by reverse actuation of the limb members.
However, these prior art arm assemblies generally require a separate actuation of the grab device to cause the bin to tilt to its dumping position so as to discharge its contents into the storage chamber. The tilting of the bin has normally been achieved by the actuation of a hydraulic cylinder operable between the outer most limb of the arm assembly and the grab device. The grab device tilt cylinder works in concert with the other cylinders operable mounted on the limb members.
It is an object of this invention to provide an improved loading assembly suitable for use with refuse collection/compaction vehicles.
SUMMARY OF THE INVENTION
According to the invention there is provided a loader arm assembly adapted to raise a refuse bin to a dump position, said loader arm assembly comprising a primary arm adapted to be pivotally mounted on a refuse collector at or adjacent one of its ends, a secondary arm connected to the other end of the primary arm, a grab assembly connected to the other end of the secondary arm and means for pivoting the primary arm including a cylinder and ram arrangement in which the ram is connected to the point at which the primary arm is connected to the refuse collector and the cylinder has one link connecting it to the refuse collector and another link connecting it to the primary arm.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of a loading assembly for a refuse collection/compaction vehicle according to one embodiment of the invention,
FIG. 2 is a view similar to FIG. 1 with the loading assembly stored against the vehicle,
FIG. 3 is a view similar to FIG. 2 with the primary arm moved to its datum position,
FIG. 4 is a view similar to FIG. 3 showing the initial downward movement of the secondary arm and grab assembly,
FIG. 5 is a view similar to FIG. 4 showing the outward movement of the grab assembly as the secondary arm is further rotated to pick up a refuse container adjacent the vehicle,
FIG. 6 is a view similar to FIG. 5 with the grab assembly extended to pick up a refuse container remote from the vehicle,
FIG. 7 is a view similar to FIG. 5 showing the grab assembly engaging the refuse container.
FIG. 8 is a view similar to FIG. 7 showing the refuse container being elevated, and
FIG. 9 is a view similar to FIG. 8 showing the refuse container being emptied.
BEST MODE FOR CARRYING OUT THE INVENTION
The loader assembly 10 shown in FIGS. 1 to 9 has a primary arm 11 which is mounted via a pivot point 12 to the side of a refuse collector which, in this instance is the compaction chamber 13 of refuse vehicle 14. A secondary arm 15 is pivoted from the other end of the primary arm 1 1 at pivot point 16.
A container grab assembly 17 is mounted on the other end of the secondary arm 15. The grab assembly 17 is kept in relation to the primary arm 11 by means of a linkage 18 which is attached to the grab assembly 17 at a connection point 36 spaced apart from pivot point 35. The linkage 18 is also attached to the primary arm 11 at a connection point 37 spaced apart from the pivot point 16.
In the normal rest position for the loader assembly 10, the primary arm 11 points vertically down fr
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patent: 4872801 (1989-10-01), Yeazel et al.
patent: 5256027 (1993-10-01), Guest
patent: 5391039 (1995-02-01), Holtom
Ferndale Investments Pty Limited
Keenan James W.
LandOfFree
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