The present invention pertains to front loading commodity collection bodies equipped with front forks which can elevate a container holding waste commodities to an elevated position above a top load opening of the collection body.
Historically, commercial waste commodity containers have been available in three basic styles: front loading, in which the container is equipped with fork pockets on the opposing ends of the container so the container can be lifted to a position above the top load opening of the collection body; side loading containers in which the container is equipped with hooks on the front sidewall of the container which may be engaged with engaging catch apparatus on the side-loading collection body; and rear loading containers which are provided with a trunnion bar running along the top edge of the front sidewall of the container, such that the trunnion bar may be engaged with trunnion pockets mounted to the outer wall of a trough carried at the rear of the rear loading collection body such that the rear loading container can be rotated about its trunnion bar and emptied into the rear trough of the collection body.
Because of these three distinctive and mutually exclusive types of containers, it is common for commodity haulers in the refuse and recycling industry to use a specific commodity collection truck equipped with a specific commodity collection body to collect the corresponding front loading, side loading or rear loading containers, with each collection body being capable of collecting from only one of the types of commercial containers. Each different style of specific orientation of commercial container has a specific and differently designed attachment apparatus that corresponds to the specific style of truck, so in order to collect all three of the different types of commercial containers the hauler would need to have three kinds of commodity collection trucks in the hauler's operation.
An adapter system for the front load forks of a standard front loading collection body mounted on a commodity collection truck is disclosed. This refuse collection body adapter system invention converts a standard commercial front loading truck into a truck that can collect each style of front load, side load and rear load commercial refuse or recycling container. In addition to the versatility to collect the three types of commercial containers, the adapter system also offers the truck operator the safety and convenience to collect all front, side and rear load commercial container orientations with an automated collection method so the truck operator never has to leave the cab of the truck when collecting containers on route.
In addition to being capable of attaching to and emptying the three main styles of commercial refuse commodity container, the adapter is also equipped to grasp and upend a common type of household or small commercial waste container by use of gripping arms which wrap about the container and grasp it for retention to the adapter as the container is upended over an intermediate container which is part of the adapter system.
The adapter may mount on the front forks of a conventional front loading commodity collection truck and includes an intermediate container, a hit mechanism for lifting the refuse container and upending it over the intermediate container, and an engaging apparatus which will latch to either a rear load trunnion-equipped refuse container, a side load hook-equipped refuse container, or a residential container. The adapter may be easily removed so that the collection truck may be used to collect from front load refuse containers may use of the front forks of the truck as in conventional front loading trucks. Therefore, the adapter can convert a front loading collection truck into a collection truck which may be used to collect rear load and side load styles of commercial containers, along with residential or small commercial narrow upright refuse containers.
With the adapter system disclosed, changing between the side and rear load container orientations is as simple as sliding the disclosed side load specific adapter off the front load forks and replacing it with a rear load specific adapter which can be slid onto the front load forks in a matter of minutes. All front load commercial containers can be emptied into the collection body using the standard front load forks with the adapter system removed from the forks, and then the adapter system can be slid back onto the front forks for collection of waste commodity from rear load or side load commercial containers. Again, this means that a single commodity collection truck is able to perform the tasks of three different conventional individual refuse collection trucks
For use of the front loading refuse collection trucks for collection from a front loading container encountered along a collection route, the truck operator may remove the adapter from the front forks by sliding the adapter off the forks. Then the truck can be used in the conventional manner with the forks of the truck engaging the fork pockets of the front loading container. After the front load container is lifted over the top load opening of the collection body, the container is lowered to ground level and the truck backs away to pull the forks from the fork pockets. Then the adapter may be remounted to the forks by insertion of the forks into fork pockets on the intermediate container of the adapter. A simple locking mechanism such as a chain may be used to secure the adapter to the forks while the hydraulics of the collection truck do the heavy work of mounting the adapter to the front forks. However proper orientation of the forks will make a locking mechanism unnecessary when the operator is skilled sufficiently not to over rotate the intermediate container over the top load opening of the collection body, to the point that the adapter might slide off the forks.
The adapter is available in two configurations, namely one provided with trunnion pockets to receive the trunnion bar of a standard rear load container, and another form of the adapter with the catches for the hooks mounted to the front sidewall of the typical side loading container. Either type of adapter may also be optionally equipped with gripping arms which may be operated to wrap around the body of a residential container when such a container is encountered.
When the truck operator expects to encounter side load containers as well as front load containers, a second embodiment of the invention adapter is slid onto the forks in place of the rear loading embodiment. The second embodiment includes an intermediate container carried on the forks and equipped with a container engagement system equipped with catches to interlock to the hooks on the side load containers. The lift mechanism of the adapter will be essentially the same for either embodiment of the adapter invention.
The invention provides various safety and economic benefits, namely:
Therefore it is a primary object of the invention to provide an adapter to convert a front loading commodity collection truck into a collection truck which may collect trash or recyclables from any of the three major commercial styles of refuse commodity containers and from residential containers as well.
These and other objects of the invention will be understood from examination of the detailed description which follows.
Identical parts among various embodiments are referenced with the same reference numeral throughout this description and the drawing figures.
Definitions. The following definitions will apply throughout this disclosure:
“Refuse commodity” and “waste commodity” will mean materials which have been discarded and includes garbage, refuse, trash, and recyclable materials.
“Refuse collection body” and “commodity collection body” will mean a large container to receive waste commodities which is carried on a refuse collection truck.
“Front load collection truck” will mean a motor vehicle which carries a refuse collection body equipped with a pair of lift arms with movable forks on the ends of the lift arms, the forks positioned in front of the vehicle when ready to engage a front load container, with the forks adapted to enter fork pockets on the sides of a commercial front load container, with the arms capable of lifting the trout load container over the top of the cab of the vehicle and tipping the front load container over a top load opening of the refuse collection body to empty the contents of the front load container into the refuse collection body.
“Front load container” will mean a large commercial refuse container with hinged lid or lids which has horizontal fork pockets on opposing sides of the container.
“Rear load container” and “rear end load container” will mean a commercial refuse container which is designed to be tipped about a trunnion bar on the container into a trough carried at the rear of the refuse collection truck.
“Side load container” will mean a commercial refuse container having hook pockets on a front side thereof which will couple to a mechanism on a refuse collection truck which lifts the container from the side of the truck and tips the container to empty it into a top load opening of the refuse collection body on the refuse collection truck.
“Residential refuse container” and “upright refuse container” will mean a refuse container which is taller than it is wide.
Referring to
Specifically,
The engagement mechanism 4 includes a frame 10 on which a spaced apart pair of pocket arms 40 are supported. The pocket arms 40 are spaced apart a distance slightly in excess of the width of the commercial refuse container 1 between opposing end walls 13, 13a thereof. Each pocket arm 40 includes an open topped trunnion pocket 42 thereon which may receive ends of the trunnion bar 11 of container 1 which extend from each opposing end wall 13, 13a of refuse container 1. Engagement mechanism 4 also includes spaced apart retention arms 8 at each opposing end thereof which may urge refuse container 1 against stabilizer 44 of engagement mechanism 4 when container 1 is upended. Retention arms 8 are rotatable from an open generally upright position wherein a large gap exists between the top edge 14 of each end wall 13, 13a of refuse container 1, to a lock position where transverse bars 82 closely overlie or touch the top edges 14 of end walls 13, 13a of refuse container 1.
The bar 82 of each retention arm 8 is cantilevered from the retention arm 8 at or near the free end 80 of the retention arm 8. Each bar 82 extends generally toward the opposing bar 82 such that the bars 82 overlie the top edges 14 to selectively stabilize the refuse container 1 against the stabilizer 44 and to restrain the refuse container 1 from falling into the intermediate container 2 when tipped thereover.
Each bar 82 is inclined upwardly from its mounting on retention arm 8 when viewed in its lock position and with the engagement apparatus 4 in its lower position such as when attached or ready to be attached to a refuse container 1 in its upright orientation as illustrated in
In
Container engagement assembly 4 is attached to curb side sidewall 21 of intermediate container 2 by vertical tracks 5 mounted to curb side sidewall 21 along which bearing members 46 (bearings or rollers) may move as the engagement mechanism 4 is raised along curb side sidewall 21 of intermediate container 2. Elevation of engagement mechanism 4 is accomplished by drive members such as hydraulic cylinder 12 illustrated in
Engagement assembly 4 also includes a guide member 48 which extends above support assembly 4 and may be substantially coplanar therewith, the guide member 48 preventing commodity dropping from refuse container 1 from dropping outside intermediate container 2 when the refuse container 2 is upended.
Pocket arms 40 are rotatable about the axis of axle 41 so that pocket arms 40 may reach under trunnion bar 11 and rise to catch trunnion bar 11 in the trunnion pocket 42 on each pocket arm 40. Then retention arms 8 are lowered so bars 82 closely overlie or touch top edges 14 of refuse container end walls 13, 13a.
Once raised sufficiently, refuse container 1 is rotated about bearing axles 46, the engagement assembly 4 being selectively driven by lift cylinder 12 to invert refuse container 1 over the top opening 22 of intermediate container 2.
Once container 101 is securely attached to engagement mechanism 104, extension rails 9 are retracted and engagement mechanism 104 then is raised along lift tracks 5 and driven in rotation about axles 110 to cause bin 101 to empty its contents into top opening 22 of intermediate container 2.
At least one but preferably a pair of pivot arms 236 are selectively rotatable about pivot axle 230 by drivers such as hydraulic cylinder 212. The hydraulic cylinder 212 may be selectively employed by operation of controls in cab 54. Engagement mechanism 4 is supported on pivot arms 236 and includes pocket arms 40 which are spaced apart slightly more than the length of rear loading container 1. Like with the adapter 100 shown in
Retention arms 8 as also seen in
Pivot arms 236 may swing out toward rear end load refuse container 1 when it is located curbside of the intermediate container 2, and engagement mechanism 4 may fasten to the refuse container 1 by positioning the trunnion bar 11 of the container 1 in the pockets 42 of pocket arms 40, whereupon the retention arms 8 may be lowered. The refuse container 1 may then be pulled toward intermediate container 2 and then drawn alongside curb side sidewall 21 of intermediate container 2. When the rear loading container 1 is alongside the intermediate container 2, the drive cylinder 212 may lift and rotate the engagement mechanism 4 with rear loading container 1 attached, into a substantially tipped, upended position over the top opening 22 of intermediate container 2. After the contents of refuse container 1 have dropped into intermediate container 2, the refuse container 1 may be returned to ground level and the pivot arras 236 may move it away from intermediate container 2. The adapter 200 can then release the rear loading container 1 from the engagement mechanism 4 at a location spaced away from the forks 6 so that the truck 50 may proceed along the street without the rear loading container providing any obstacles in the roadway.
It should be understood that a side load container support mechanism 104 as seen in
When intermediate container 2 is sufficiently filled, it may be raised on the forks 6 by lift arms 3, 3a and moved over the cab 54 and inverted by operation of fork cylinders 31 (See
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood by those of ordinary skill in the art that various changes, substitutions and alterations can be made herein without departing from the scope of the invention as defined by appended claims and their equivalents. The invention can be better understood by reference to the following claims. For purpose of claim interpretation, the transitional phrases “including” and “having” are intended to be synonymous with the transitional phrase “comprising”.
This application claims priority under 35 USC §119 from copending provisional patent application entitled ADAPTER TO EMPTY REAR END LOAD OR SIDE LOAD REFUSE CONTAINERS INTO FORK BORNE INTERMEDIATE CONTAINER, Ser. No. 61/591,633, filed Jan. 27, 2012, The disclosure of provisional patent application Ser. No. 61/591,633 is hereby incorporated in its entirety.
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