WO2015125091A1 - Bilateral method of unloading a dumpster - Google Patents

Bilateral method of unloading a dumpster Download PDF

Info

Publication number
WO2015125091A1
WO2015125091A1 PCT/IB2015/051244 IB2015051244W WO2015125091A1 WO 2015125091 A1 WO2015125091 A1 WO 2015125091A1 IB 2015051244 W IB2015051244 W IB 2015051244W WO 2015125091 A1 WO2015125091 A1 WO 2015125091A1
Authority
WO
WIPO (PCT)
Prior art keywords
gripping member
dumpster
unloading
truck
transversal
Prior art date
Application number
PCT/IB2015/051244
Other languages
French (fr)
Inventor
Stefano MERONI
Giovanni Meroni
Original Assignee
Meroni Stefano
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meroni Stefano filed Critical Meroni Stefano
Publication of WO2015125091A1 publication Critical patent/WO2015125091A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/12—Refuse receptacles; Accessories therefor with devices facilitating emptying
    • B65F1/125—Features allowing the receptacle to be lifted and emptied by its bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F3/0203—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto with crane-like mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F2003/0263—Constructional features relating to discharging means
    • B65F2003/0266—Constructional features relating to discharging means comprising at least one telescopic arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F2003/0263—Constructional features relating to discharging means
    • B65F2003/0273—Constructional features relating to discharging means capable of rotating around a vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F2003/0263—Constructional features relating to discharging means
    • B65F2003/0276—Constructional features relating to discharging means capable of moving towards or away from the vehicle

Definitions

  • the present invention relates to a method of unloading a dumpster for the collection of municipal waste, a dumpster and a truck suitable to implement the method of the present invention.
  • the truck is equipped with a mechanical arm suitable to couple, for example by means of a hook, to a special bell-shaped dumpster having a ring at the top.
  • a mechanical arm suitable to couple, for example by means of a hook, to a special bell-shaped dumpster having a ring at the top.
  • Such mechanical arm lifts the dumpster bell and raises it over the load area, in this position, the mechanical arm is suitable to move the frame of the bell to complete the unloading of the waste by means of the force of gravity.
  • the bell system is thus flawed by problems related to the method for attaching the arm to the dumpster, making it mandatory for an operator to get out of the truck and attach the mechanical arm to the rings of the bell-shaped dumpster, resulting in an obvious disadvantage in terms of convenience and work time.
  • the bell system does not permit unloading of the waste in the load area of the truck in a reproducible manner over time, the position of the dumpster over the load area as well as the position of the dumpster itself in its repositioning on the ground are not in fact reproducible over time uniquely, and thus the unloading of waste into the load area is random in nature.
  • the truck In the automated side-loading system the truck is equipped with a special system suitable to lift a dumpster by grasping it laterally to its head and by tipping the dumpster it is emptied of the waste contained therein; this system thus permits the unloading of the dumpster in an automated manner, without the need for an operator to get out of the truck, to couple the. dumpster.
  • this type of system is flawed, in turn, by the problem of not being able to predict unambiguously the way the waste falls which in fact falls inside the load area randomly, as a result of the tipping of the dumpster .
  • the purpose of the present invention is therefore to provide a method of unloading a dumpster which solves this problem, proving suitable to perform the unloading of waste stored in a dumpster into the load area of a truck in a precise and reproducible manner each time.
  • the unloading method of the present invention comprises a series of steps such that the positioning of a dumpster over the load area of a truck is always the same, thus making the unloading manner of the waste inside the load area predictable.
  • FIG. 1 and la show a side view of a truck and a schematic diagram of the method of unloading a dumpster, according to the automated lateral loading system typical of the prior art;
  • FIG. 1 shows a side view of a truck and a schematic diagram of the method of unloading a dumpster according to the bell system typical of the prior art
  • FIG. 3a, 3b and 3c represent three side views of a truck according to the present invention, in three different embodiments, respectively suitable to engage a dumpster on the roadside, a surface buried dumpster, and a deep buried dumpster;
  • FIG. 4a, 4b and 4c show three schematic diagrams from below of the unloading method of a dumpster according to the three embodiments in figures 3a, 3b and 3c;
  • FIG. 5 and 6 respectively show two views from above of the unloading method of a dumpster, respectively, the steps of picking up and repositioning, and the rotation step for unloading;
  • FIG. 7 and 8 show two views from the front and from above of a dumpster of the present invention
  • FIG. 9a and 9a 1 are two transversal cross- section views of the dumpster in figures 7 ' and 8 respectively in a closed configuration, and an unloading configuration;
  • FIG. 9b and 9b', 9c and 9c', 9d ' and 9e ' similar to figures 9a and 9a' show cross-section views of dumpsters in further embodiments, in closed configurations and unloading configurations;
  • FIG. 10 shows a side view of the unloading means comprised in the truck of the present invention, according to a first embodiment
  • figure 10' shows a cross-section view of the transversal translation group comprised in the unloading means shown as in figure 10;
  • FIG. 11 and 11' show two cross-sections of the lifting means comprised in the unloading means, respectively, in one embodiment with one extension and in one embodiment with two extensions, both in a raised position;
  • FIG. 12 and 12' are two side views of the gripping member comprised in the unloading means according to a preferred embodiment, respectively in a rest position and a position of action;
  • FIG. 13 shows a view from above of the gripping member comprised in the unloading means according to a preferred embodiment
  • FIG. 14 is an enlarged view from above of a dumpster engaged with the gripping member according to a preferred embodiment
  • FIG. 15 is a cross-section view along the plane V-V in figure 10 of the means of rotation comprised in the unloading means according to a preferred embodiment
  • - figures 15a, 15b and 15c show three different positions of the means of rotation, according to the embodiment in figure 15, respectively in a position in which the gripping member is in the rest position, gripping position and unloading position;
  • - figure 15' is a view from above of another embodiment of the rotation means, comprised in the unloading means;
  • FIG. 16 is a schematic diagram of the unloading method of a dumpster according to a further embodiment
  • FIG. 16a and 16b show two schematic diagrams from below of the truck according to the embodiment in figure 16, in which the gripping member is in a first and in a second rest position;
  • FIG. 17a, 17b and 17c respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 16a, respectively in a front view, a view from above and a cross-section view along the plane VI -VI in figure 17a;
  • FIG. 18a, 18b and 18c respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 16b, respectively in a front view, a view from above and a cross-section view along the plane VII -VII in figure 18a;
  • FIG. 19 is a schematic diagram from below of the unloading method of a dumpster according to a further embodiment, in particular ambidextrous;
  • FIG. 19a and 19b show two schematic diagrams from below of the truck according to the embodiment in figure 19, in which the gripping member is in a first and in a second rest position;
  • - figures 20a, 20b and 20c respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, respectively in a front view, a cross-section vie along the plane VIII -VIII in figure 20a, and a further front view with the front end translated;
  • - figures 21a, 21b and 21c respectively show a further embodiment of the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, respectively in a front view, a cross- section view along the plane IX -IX in figure 20a, and a further front view with the front end translated;
  • - figures 22a, 22b and 22c respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, according to yet a further embodiment respectively in a front view, a cross-section view along the plane X -X in figure 22a, and a view from above;
  • FIG. 22' and 22" show the transversal translation group shown in figures 22a, 22b and 22c, respectively, in a position shifted to the right and left with respect to the longitudinal axis of the truck;
  • - figures 23a and 23b respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, according to yet a further embodiment respectively in a view from above and a cross-section view along the plane XI-XI in figure 23a;
  • FIG. 23' and 23" show the transversal translation group shown in figures 23a and 23b, respectively, in a position shifted to the right and left with respect to the longitudinal axis of the truck.
  • the truck 1 is a truck or a lorry, and comprises a load area 10 suitable to receive the waste; preferably, inside the load area 10 is- a press suitable to move and compress the waste unloaded inside it.
  • the truck 1 defines a longitudinal axis X-X, i.e. the axis along which it extends in length, a transversal axis Y-Y perpendicular to the longitudinal axis, for example parallel to the axles of the wheels of the truck 1, a vertical axis Z-Z along which the truck 1 extends in height.
  • the truck 1 comprises unloading means 3 for the movement and unloading of the dumpster 2 in the load area 10, in particular, the unloading means 3 comprise a gripping member 30 suitable to engage the dumpster 2 so as to perform specific movements and operations on it.
  • the dumpster 2 comprises a bell- shaped frame 21 and a bottom frame 22, movable relative to one another; in other words the relative movement between the two frames permits the creation of a space between which the waste, by the effect of the force of gravity, falls into the load area 10 and is unloaded.
  • the dumpster 2 further comprises coupling means 200, placed above it, preferably on its top, specifically suitable to be engaged by the gripping member 30 for the movement thereof.
  • the coupling means 200 comprise at least one unloading member 210 on the bell-shaped frame 21 and at least one gripping member 220 on the bottom frame 22.
  • the unloading member 210 and the gripping member 220 have a shape suitable to permit them to be coupled, for example in the shape of a ring, a bridge, a T, or cantilevered; in other words, as described below, the gripping member 30 is suitable to insert itself in the unloading member 210 and in the gripping member 220 to realise such engagement.
  • the method of the present invention comprises the steps of:
  • the gripping member 30 comprised in the unloading means 3 of the truck 1, permits a movement of the dumpster 2 lying on a ground plane T, or buried in it depending on the embodiments thereof, such that the dumpster 2 is always gripped in the same manner by said gripping member 30 and is always brought into a clearly defined unloading position by the gripping members 30, according to the steps, and the translations described above.
  • the dumpster 2 is_ in fact “skewered” by the gripping member 30, moved in translation, to engage the coupling means 200; the dumpster 2 is then brought to a predefined height, a height related to the height of the dumpster 2 itself; at said height, the dumpster 2 is rotated, "flag wise", i.e., without changes in elevation, but translating on a plane parallel or substantially parallel to the ground plane, to reach the unloading position, in which, finding itself above the load area 10 the unloading step is performed.
  • the unloading method further comprises the step of:
  • Said step takes place following the engagement of the dumpster 2 by the gripping member 30 and before or during the lifting phase of the dumpster 2, for example to move the dumpster near the truck 1 before the rotation step thereof, so that in said "flag-wise" rotation step the rotation radius of the dumpster 2 is minimised.
  • the unloading method further comprises the step of:
  • Said step is carried out between the step of moving the truck 1 alongside the dumpster 2 and the step of transversal movement of the gripping member 30.
  • the gripping member 30 while the truck 1 is moving, the gripping member 30 does not protrude from the lateral dimensions of the truck 1 and is retracted inside it, in such a way that there are no protrusions on the sides of the truck 1.
  • the gripping member 30 is retracted on the truck 1, ' as shown in the appended drawings, in particular in figures 3 to 6, by means of a rotation, for example of 90°.
  • the gripping member 30 is retracted on the truck 1, as shown in the appended drawings, and in particular in figures 16 to 22", by translating along the transversal axis Y-Y.
  • the realisation of the gripping step of the unloading method is possible thanks to the gripping member 30 which comprises an unloading arm 310 and a gripping arm 320, respectively suitable to insert themselves in the unloading member 210 and in the gripping member 220 when the gripping member 30 is moved in a transversal translation in the direction of the dumpster 2.
  • the gripping arm 320 engages the gripping member 220, upon actuation of the upward movement of the gripping member 30 and the force of gravity, while in the execution step of unloading the dumpster 2 the unloading arm 310 engages the unloading member 210 moving it, for example, in vertical translation, and moving the bell-shaped frame 21 in relation to the bottom frame 22.
  • the unloading method of the present invention comprises a step of securing the grip of the gripping member 30 on the dumpster 2; such step is achieved by special safety members 39 comprised in the unloading means 3, and preferably placed on the safety member 39 on the unloading arm 310, suitable to be actuated to engage the dumpster 2, once engaged by the gripping member 30 so as to mechanically lock said engagement.
  • the gripping member 30 comprises one or more mechanical linkages 390 mechanically moved by pistons 391, preferably air, suitable when operated, to engage the dumpster 2, and in particular its top surface so that the mutual engagement of the unloading arm 310 and the unloading member 210 is mechanically locked.
  • the mechanical system of linkages 390 in its engagement end with the dumpster 2, has a scroll wheel 395 to facilitate engagement with the dumpster 2, and the complete extension of the pistons 391 which place said linkages 390 in movement.
  • the piston 391 sets in motion the linkage 390 engaging the wheel 395 with the dumpster 2.
  • the action of the piston 390 continues until the linkage 390 passes beyond the dead centre position thus going to perform the safety locking 390 and mechanically blocking the dumpster 2.
  • the method of unloading described above is suitable to be performed on both sides of the truck 1, in other words, on both the right and left side; this way the method is applicable in situations in which the dumpster 2 is placed on the right and/or left side of the road.
  • the method is thus suitable to be used both on roads where driving is on the right and roads where driving is on the left.
  • the unloading method is suitable to perform the step of preparing the gripping member 30 on the truck 1 in a transversal position, ready for coupling a dumpster 2, wherein the gripping member 30 is placed in a direction for engagement on the right side or in a direction for engagement on the left side of the truck 1.
  • the gripping member 30 is rotatable by 180° into two opposite positions so that it is suitable to couple dumpsters on both sides of the truck 1.
  • the present invention also relates to a dumpster 2 for waste collection suitable to be unloaded according to the unloading method described above, and thus having the aforementioned characteristics and the aforementioned components.
  • the dumpster 2 has inside it a waste area 25 to accommodate a predefined quantity of waste; in other words, the bell-shaped frame 21 and the bottom frame 22 delimit said waste area 25.
  • said waste area 25 is divided into a plurality of compartments 25' mutually separated, for example by walls or partitions 258 housed inside the dumpster 2.
  • the bell-shaped frame 21, preferably above it, has at least one input mouth 251 for the insertion of waste inside the waste area 25, for example an input mouth 251 for each compartment 25'.
  • an access cap is fittable on the input mouth 251 suitable to allow and vice versa to prevent access to the waste area 25 only if in possession of the relevant mechanical or electronic security key.
  • the dumpster 2 protrudes from the ground with a dome 290, specifically suitable to be engaged by the gripping member 30; where on said dome 290 to at least one input mouth 251 is made; where inside said dome 290 the unloading member 210 and the gripping member 220 are housed.
  • the unloading member 210 and the gripping member 220 are outside the dome 290 in a position suitable to be coupled, for example at the sides thereof or in a specially shaped space.
  • the bell-shaped frame 21 has a polygonal structure, for example, a prismatic or conical or frusto-conical or cylindrical structure, for example having a rectangular or square or circular or rhomboid cross-section.
  • the bottom frame 22 has a bottom 222 suitable to close the lower opening of the bell-shaped frame 21 and a return structure 225 which extends from the gripping element 220 to the bottom 222 so that upon movement of the unloading member 210 and maintenance of the position of the gripping member 220 controlled by the gripping member 30, an opening is created through which the unloading of the waste contained in the dumpster 2 takes place by means of the force of gravity thereon.
  • said walls or dividing partitions 258 of the various compartments 25' are placed and included on said return structure 225.
  • the bottom 222 comprises a plate 222', for example with a conical or pyramidal structure, so that the dumpster 2 is suitable to be configured in a closed configuration in which said plate 222' engages the bell-shaped frame 21 and a release configuration in which the bell-shaped frame 21 is axially spaced from the plate 222', and thus creates a space through which the waste is suitable to be unloaded.
  • FIGS 9c and 9c 1 show, in cross-section, said configurations of the dumpster 2.
  • the bottom 222 comprises a plurality of doors 222", preferably hinged to the bell-shaped frame 21 so that a translation of the bell-shaped frame 21 corresponds to a rotation of said doors 222", so that the dumpster 2 is suitable to be configured in a closed configuration in which the doors 222" are closed on the bell-shaped frame 21 and a release configuration in which the bell-shaped frame 21 is moved vertically and the doors 222" hinged to it are rotated, in opening, engaged by the return structure 225.
  • figures 9a and 9a', figures 9b and 9b 1 figures 9d' and 9e' is which said solution of a bottom 22 comprising a. plurality of doors 222", for example two or four doors is shown.
  • the return structure 225 comprises special rods 225" engaged, preferably hinged, to the doors 222" so that, when the bell-shaped frame 21 is placed in motion and the return structure 225 is instead held in position by the engagement of the gripping member 30 with the gripping member 220, the rods 225" push the doors 222", rotating them around their hinges. This way the bottom 222 is opened and the unloading of the waste takes place.
  • a rod 225" corresponds to each door 222".
  • the return structure 225 and the respective rods 225" are designed and structured in such a way as to support the weight of the waste on the doors 222" to keep them in the closed position.
  • said rods 225' are protected by suitable protective frames, or are placed in the side walls 258 of the dumpster 2, or in the inner partition walls of the dumpster 2.
  • the unloading member 210 is placed on an unloading axis Y 1 -Y 1 , parallel to the transversal axis Y-Y of the truck 1 when it is alongside the dumpster 2 and the gripping member 220 is placed on a gripping axis X'-X 1 of the dumpster 2, preferably parallel to the longitudinal axis X-X of the truck 1 when it is alongside the dumpster 2, or vice versa.
  • the unloading axis Y'-Y 1 is perpendicular to the gripping axis X'-X' .
  • the intersection of said axes is thus in the centre of the dumpster 2, preferably in the centre of gravity of the dumpster 2 when it is empty.
  • the unloading member 210 comprises two unloading members 211, both suitable for being coupled, aligned on said unloading axis Y'-Y' and/or the gripping member 220 comprises two gripping members 220, both suitable for being coupled, aligned on said gripping axis X'-X', or vice versa.
  • the gripping member 30 by translating along the transversal axis Y-Y inserts itself through said gripping members 221 and said unloading members 211, thus going to engage the dumpster 2 in four coupling points (see for example figure 8 or figure 14) .
  • the gripping member 30 only one out of the unloading member 210 and the gripping member 220 comprises two members, so that the engagement of the gripping member 30 is in three coupling points.
  • the gripping member 30 thus has resulting characteristics suitable for allowing the aforesaid type of engagement.
  • the gripping member 30 has a trident or fork shape having a central unloading arm 310 and a gripping arm 320, in the shape of a fork, having two prongs 320' and 320' 1 suitable to insert themselves in the respective gripping members 221, at the sides of the unloading arm 310.
  • the unloading arm 310 has two engagement portions 310' and 310" placed at different heights, for engagement with the respective unloading member 211.
  • Housed near said gripping portions 310' and 310" are, in addition, the aforesaid safety members 39 and the respective mechanical linkage systems 390 suitable to make the engagement of the unloading arm 310 and thus of the two gripping portions 310' and 310" integral . with the respective unloading members 211.
  • the present invention also relates to a truck 1 for waste collection suitable to perform the steps of the unloading method according to the above description engaging a dumpster 2 in turn having the characteristics described above.
  • the truck 1 has the unloading means 3 which comprise:
  • transversal translation group 31 suitable to perform the translation along the transversal axis Y-Y of the gripping member 30;
  • a lifting group 32 suitable to move the gripping member 30 in height along the vertical axis Z-Z, ;
  • the lifting group 32 comprises a gripping member lifting mechanism 323 and an unloading mechanism 325 suitable to autonomously move the unloading member 210, in particular the unloading arm 310, preferably vertically.
  • the gripping member 30 is brought into vertical movement, in its entirety, by means of a suitable gripping member lifting mechanism 323, while for the specific implementation of the unloading operations and therefore the movement described above of the bell- shaped frame 21, the lifting assembly 32 comprises a special unloading mechanism 325, for example comprising one or more pistons, suitable to place in vertical motion the unloading arm 310, and thus permitting the vertical translation of the bell-shaped frame 21.
  • a special unloading mechanism 325 for example comprising one or more pistons
  • the transversal translation group 31 is located on the truck 1 in a transversal position, for example, below the load area 10.
  • the transversal translation group 31 comprises a front end 31' on which the gripping member 30 is placed and on which the lifting group 32 is placed which extends in height parallel to the load area 10, and the rotation group 33, suitable for placing in rotation the gripping member 30 rotating in its entirety the lifting group 32.
  • the front end 31' is the part of the transversal translation group 31 which in the gripping operations of the dumpster 2 by the gripping member 30 is located closest to the dumpster 2.
  • the transversal translation group 31 comprises a plurality of hollow telescopic transversal structures 311, wherein the inner structure 311' comprises the front end 31', and wherein the relative movement of the hollow telescopic transversal structures 311 involves the translation of the gripping member 30.
  • the transversal telescopic structures 311 is fixed to the frame of the truck 1, while the other hollow telescopic transversal structure or structures 311 are movable in translation with respect thereto.
  • the reciprocal translation of the hollow telescopic transversal structures 311 is obtained by means of suitable actuating cylinders housed in the internal space thereof.
  • the transversal translation assembly 31 ⁇ comprises a gripping member holder 350, on which the front end 31' is located.
  • the gripping member holder 350 is substantially a carriage.
  • the transversal translation group 31 is suitable to translate along the transversal axis Y-Y in such a way that by translating, the gripping member 30 is accommodated in its entirety on the truck 1, preferably parallel to the transversal axis Y-Y, and is suitable to couple the dumpster 2 to start the unloading operations described above.
  • the gripping member holder 350 working as a front end 31', is suitable to support the lifting group 32 and the rotation group 33, and thus the gripping member 30.
  • the translation of the gripping member holder 350 thus corresponds to the transversal translation of the lifting group 32 and of the rotation group 33.
  • the transversal translation group 31 comprises a transversal translation system 360, to which the gripping member holder 350 is movably attached; in other words, the system 360 is suitable to command the movement along the transversal axis Y-Y of the gripping member holder 350 so as to bring it inside the truck 1 and/ or to insert it in the dumpster 2.
  • the translation system 360 is suitable to bring the gripping member holder 350 into a central position on the truck 1, preferably at the centreline thereof; or in further embodiments, the translatory system 360 is suitable to bring the gripping member holder 350 into a position offset from the centre of the truck 1 i.e. not on the centreline thereof.
  • the translation system 360 is suitable to bring the gripping member holder 350 to the ends of the truck 1 to couple the dumpster 2; preferably the translation system 360 is suitable to translate the gripping member holder 350 into a cantilever position outside the sides of the truck 1 to perform the coupling of the dumpster 2. [0096] According to a preferred embodiment, the translation system 360 is suitable to move the gripping member holder 350 along the transversal axis Y-Y in both directions, so as to make the truck 1 suitable for operating with dumpsters 2 placed on both sides of the truck 1.
  • the translation system 360 comprises a base frame 361 attached to the frame of the truck 1.
  • the translation system 360 comprises a translating frame 362 movable in a transversal direction to the base frame 361.
  • the translating frame 362 comprises two main parts, the first translating frame 362' and the second translating frame 362".
  • the first translating frame 362' and the second translating frame 362' are movable in the two opposite directions, both simultaneously and separately from each other.
  • the gripping member holder 350 is fitted movably in a transversal direction to the base frame 361 and/or the translating frame 362.
  • translating frame 362 is obtained by means of one or more primary auxiliary cylinders 363 having the ends attached to the base frame 361 and to the translating frame 362.
  • the movement between the translating frame 362, for example, in the embodiment comprising the first translating frame 362' and the second translating frame 362", and the gripping member holder 350 is obtained by means of one or more secondary auxiliary cylinders 365 having the ends respectively attached to the translating frame 362 and to the gripping member holder 350.
  • the maximum translation of the gripping member holder 350 corresponds to the sum of the strokes of the primary 363 and secondary 365 auxiliary cylinders .
  • the translation system 360 comprises a base frame 361 attached to the frame of the truck 1 and. the gripping member holder 350 is suitable to translate thereon.
  • the translation system 360 comprises a rack and pinion or worm screw - nut screw system 366 for moving the gripping member holder 350 with respect to the base frame 361 and / or the translating frame 362.
  • the translatory system 360 comprises a pulley -chain system 369 for moving the gripping member holder 350 with respect to the base frame 361 and / or the translating frame 362.
  • the translatory system 360 comprises a pantograph system 368 for moving the gripping member holder 350 and / or for moving the translating frame 362 with respect to the base frame 361.
  • translation systems suitable to comprise one or more of the aforesaid translation systems are further provided for.
  • mixed systems are provided for moving the translating frame 362, for example in its translating parts such as the first translating frame 362' and the second translating frame 362" with respect to the base frame 361.
  • the reciprocal movement of the parts is obtained by means of a system of auxiliary cylinders
  • the movement of the gripping member holder 350 with respect to the fixed frame 361 is obtained by a pulleys-chains system 369, or by means of a pantograph system 368, or by means of a rack and pinion system 366.
  • the translation modes of the gripping member holder 350 may be innumerable, as may the lengths of the strokes that it can perform.
  • the lifting group 32 also comprises a plurality of hollow telescopic vertical structures 321, comprising a lower structure 321' hinged at the front end 31' of the translation group 31, and wherein the reciprocal movement of the hollow telescopic vertical structures 321 involves the vertical translation of the gripping member 30.
  • the reciprocal translation of said hollow telescopic vertical structures 321 is obtained by means of special actuating cylinders housed in the internal space thereof and/or by means of a return system with pulleys and chains.
  • the vertical translation assembly 37 has one extension, comprising two hollow vertical telescopic structures 321, or has two extensions, comprising three hollow vertical telescopic structures 321.
  • the gripping member 30 is fitted on one of said hollow vertical telescopic structures 321.
  • the rotation unit 33 rotates the gripping member 30 by rotating the lifting assembly 32 in its entirety.
  • the rotation group 33 comprises a system of rollers and bushings, suitable to permit a rotation of 90° or 180° or 270° by the gripping member 30; in other words, the rotation group 33 is suitable to move the gripping member 30 in its rotation steps, for example in its rotation flag-wise, but also in the rotation between the rest position and the position of engagement, or even in its positioning for engagement with a dumpster to the right or left of the truck 1.
  • the rotation group 33 is located on the gripping member holder 350.
  • the rotation unit 33 comprises a rotation mechanism 331 comprising:
  • a first piston 333' suitable to engage the linkage 331 and rotate the lifting group 32 and therefore the gripping member 30 by 90°, between the rest position and the engagement position;
  • a second piston 333" suitable to engage in turn the linkage 331 and to rotate, working with the first piston 333' the lifting group 32 and thus the gripping member 30, by 180°, so to perform its flag-wise rotation.
  • the rotation group 33 as a function of the combination and mutual positioning of the linkage 331, the first piston 333' and the second piston 333" permits different positionings of the gripping member 30, in any case permitting movements from 0 to 270° .
  • the rotation group 33 comprises, instead, a rotating actuator cylinder.
  • all the. movements of the unloading means 3 are controlled and regulated by a suitable control system, for example electromechanical and/or pneumatic, suitable, upon command from the operator, to carry out the operations and movements described above.
  • a suitable control system for example electromechanical and/or pneumatic, suitable, upon command from the operator, to carry out the operations and movements described above.
  • the unloading method described above corresponds to comparable repositioning steps of the dumpster 2, which starting from the unloading position is replaced in position on the ground plane, or inside it, at the edge of the carriageway.
  • the load area of the truck further comprises a cover 100 of the unloading area, suitable to rotate or translate parallel to its lying plane, so as to be suitable to close the upper opening of the load area 10 in which the dumpster 2 is placed to perform the unloading step, when the truck 1 is moving, without, however, resulting in further strokes or encumbrances along the vertical axis Z-Z.
  • the load area 10 also comprises a side door 150 in turn suitable to close the unloading area to prevent gusts of wind from catching the waste stowed therein.
  • the unloading method of a dumpster, the dumpster and the truck which the present invention relate to are suitable to resolve the problems typical of the prior art; in particular the unloading of waste into the load area is predictable and reproducible over time, each time, thus allowing a prediction of the falling of the waste in the unloading step, which is therefore no longer random, the positioning of the dumpster on the load area always being the same.
  • the method of unloading a dumpster is possible for dumpsters placed on both sides of the truck 1.
  • some portions of the load area are fillable with a predefined quantity of waste in a certain manner.
  • dumpsters may be provided for having mutually divided compartments, and thus compartments specifically suitable to permit a separate collection of waste.
  • the certain positioning of the dumpster on the load area thus makes it possible to predict in which area the content of one compartment is unloaded and in which the contents of another compartment .
  • the system is fully automatic and does not require the engagement of the gripping member 30 with the dumpster 2 to be performed manually by an operator.
  • a single operator, in the cabin of the truck, is needed to perform the operations of unloading and repositioning the dumpster.
  • a further advantageous aspect is that the gripping member and the dumpster reciprocally engage each other so as to prevent bending of the dumpster when suspended at a height, having, for example the centre of gravity shifted with respect to the centre of the dumpster.
  • the four coupling points thereof are suitable to prevent the dumpster from bending for example when the different compartments house waste of different types and thus of different weights, such as paper or glass.
  • a further advantageous aspect is that the gripping member and the dumpster reciprocally engage each other so as to prevent wobbling of the dumpster when suspended at a height.
  • the safety members a solid engagement of the gripping member with the dumpster is achieved, a coupling, and consequent release, which is possible only if mechanically commanded.
  • the gripping members are ⁇ suitable to be housed inside the sides of the truck, for example, they are suitable to be positioned behind the cab of the truck.
  • Another beneficial aspect involves the use of mixed gripping members, in order to obtain different lengths of stroke for different commands; for example solutions are advantageously provided for in which the movement of the first translating frame relative to the fixed frame is achieved with one type of actuation system, e.g. auxiliary pistons, while the movement of the second translating frame relative to the first translating frame is achieved by another type of actuation system, e.g. the pulley -chains system.
  • one type of actuation system e.g. auxiliary pistons
  • another type of actuation system e.g. the pulley -chains system.
  • Additional embodiments provide for the gripping member or the unloading means to have compensation elements suitable to resolve problems related to clearance in the engagement and movement of the various components.

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  • Refuse-Collection Vehicles (AREA)

Abstract

An unloading method of a bell-shaped dumpster (2) for the collection of waste, by means of a truck (1) comprising a load area (10). The method comprises the steps of: - preparing the gripping member (30) on the truck (1) in a transversal position for the engagement of the dumpster (2) on the right side or the left side of the truck (1); - moving the truck (1) alongside the dumpster (2); - moving the gripping member (30) along the transversal axis (Y-Y) of the truck (1), to couple the dumpster (2); - lifting in vertical translation the gripping member (30) and thus the dumpster (2), up to a predefined height; - rotating the gripping member (30) and thus the dumpster (2) flag-wise, until the dumpster (2) is located in an unloading position, over the load area (10); - performing unloading of the dumpster (2).

Description

DESCRIPTION
"BILATERAL METHOD OF UNLOADING A DUMPSTER"
[0001] The present invention relates to a method of unloading a dumpster for the collection of municipal waste, a dumpster and a truck suitable to implement the method of the present invention.
[0002] In the state of the art methods of municipal waste collection are already known of in which the waste is stored in special dumpsters, usually located by the side of the road and periodically unloaded by special trucks [0003] In particular, two types of dumpster-truck system are typically known of: the bell system and the automated lateral loading system.
[0004] In the bell system the truck is equipped with a mechanical arm suitable to couple, for example by means of a hook, to a special bell-shaped dumpster having a ring at the top. Such mechanical arm lifts the dumpster bell and raises it over the load area, in this position, the mechanical arm is suitable to move the frame of the bell to complete the unloading of the waste by means of the force of gravity.
[0005] The bell system is thus flawed by problems related to the method for attaching the arm to the dumpster, making it mandatory for an operator to get out of the truck and attach the mechanical arm to the rings of the bell-shaped dumpster, resulting in an obvious disadvantage in terms of convenience and work time. In addition, the bell system does not permit unloading of the waste in the load area of the truck in a reproducible manner over time, the position of the dumpster over the load area as well as the position of the dumpster itself in its repositioning on the ground are not in fact reproducible over time uniquely, and thus the unloading of waste into the load area is random in nature.
[0006] In the automated side-loading system the truck is equipped with a special system suitable to lift a dumpster by grasping it laterally to its head and by tipping the dumpster it is emptied of the waste contained therein; this system thus permits the unloading of the dumpster in an automated manner, without the need for an operator to get out of the truck, to couple the. dumpster. However this type of system is flawed, in turn, by the problem of not being able to predict unambiguously the way the waste falls which in fact falls inside the load area randomly, as a result of the tipping of the dumpster .
[0007] The purpose of the present invention is therefore to provide a method of unloading a dumpster which solves this problem, proving suitable to perform the unloading of waste stored in a dumpster into the load area of a truck in a precise and reproducible manner each time.
[0008] Such purpose is achieved by an unloading method according to claim 1, by means of a dumpster according to claim 7 and by means of a truck according to claim 8 Specifically, the unloading method of the present invention comprises a series of steps such that the positioning of a dumpster over the load area of a truck is always the same, thus making the unloading manner of the waste inside the load area predictable.
[0009] Further characteristics and advantages of the invention are shown in the dependent claims.
[0010] The characteristics and advantages of the method, the dumpster and the truck according to the present invention will be evident from the description given below, made by way of a non-limiting example, according to the appended drawings, wherein:
- figures 1 and la show a side view of a truck and a schematic diagram of the method of unloading a dumpster, according to the automated lateral loading system typical of the prior art;
[0011] - figures 2 and 2a show a side view of a truck and a schematic diagram of the method of unloading a dumpster according to the bell system typical of the prior art;
[0012] - figures 3a, 3b and 3c represent three side views of a truck according to the present invention, in three different embodiments, respectively suitable to engage a dumpster on the roadside, a surface buried dumpster, and a deep buried dumpster;
[0013] - figures 4a, 4b and 4c show three schematic diagrams from below of the unloading method of a dumpster according to the three embodiments in figures 3a, 3b and 3c;
[0014] - figures 5 and 6 respectively show two views from above of the unloading method of a dumpster, respectively, the steps of picking up and repositioning, and the rotation step for unloading;
[0015] - figures 7 and 8 show two views from the front and from above of a dumpster of the present invention;
[0016]- figures 9a and 9a1 are two transversal cross- section views of the dumpster in figures 7 ' and 8 respectively in a closed configuration, and an unloading configuration;
[0017]- figures 9b and 9b', 9c and 9c', 9d ' and 9e ' , similar to figures 9a and 9a' show cross-section views of dumpsters in further embodiments, in closed configurations and unloading configurations;
[0018] - figure 10 shows a side view of the unloading means comprised in the truck of the present invention, according to a first embodiment;
[0019]- figure 10' shows a cross-section view of the transversal translation group comprised in the unloading means shown as in figure 10;
[0020] - figures 11 and 11' show two cross-sections of the lifting means comprised in the unloading means, respectively, in one embodiment with one extension and in one embodiment with two extensions, both in a raised position;
[0021] - figures 12 and 12' are two side views of the gripping member comprised in the unloading means according to a preferred embodiment, respectively in a rest position and a position of action;
[0022] - figure 13 shows a view from above of the gripping member comprised in the unloading means according to a preferred embodiment;
[0023] - figure 14 is an enlarged view from above of a dumpster engaged with the gripping member according to a preferred embodiment;
[0024] - figure 15 is a cross-section view along the plane V-V in figure 10 of the means of rotation comprised in the unloading means according to a preferred embodiment;
[0025] - figures 15a, 15b and 15c show three different positions of the means of rotation, according to the embodiment in figure 15, respectively in a position in which the gripping member is in the rest position, gripping position and unloading position; [0026] - figure 15' is a view from above of another embodiment of the rotation means, comprised in the unloading means;
[0027] - figure 16 is a schematic diagram of the unloading method of a dumpster according to a further embodiment;
[0028] - figures 16a and 16b show two schematic diagrams from below of the truck according to the embodiment in figure 16, in which the gripping member is in a first and in a second rest position;
[0029] - figures 17a, 17b and 17c, respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 16a, respectively in a front view, a view from above and a cross-section view along the plane VI -VI in figure 17a;
[0030] - figures 18a, 18b and 18c, respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 16b, respectively in a front view, a view from above and a cross-section view along the plane VII -VII in figure 18a;
[0031] - figure 19 is a schematic diagram from below of the unloading method of a dumpster according to a further embodiment, in particular ambidextrous;
[0032] - figures 19a and 19b show two schematic diagrams from below of the truck according to the embodiment in figure 19, in which the gripping member is in a first and in a second rest position;
[0033] - figures 20a, 20b and 20c, respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, respectively in a front view, a cross-section vie along the plane VIII -VIII in figure 20a, and a further front view with the front end translated;
[0034] - figures 21a, 21b and 21c, respectively show a further embodiment of the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, respectively in a front view, a cross- section view along the plane IX -IX in figure 20a, and a further front view with the front end translated;
[0035] - figures 22a, 22b and 22c, respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, according to yet a further embodiment respectively in a front view, a cross-section view along the plane X -X in figure 22a, and a view from above;
[0036] - figures 22' and 22" show the transversal translation group shown in figures 22a, 22b and 22c, respectively, in a position shifted to the right and left with respect to the longitudinal axis of the truck;
[0037] - figures 23a and 23b respectively show the transversal translation group comprised in the unloading means of the embodiment shown in figure 19, according to yet a further embodiment respectively in a view from above and a cross-section view along the plane XI-XI in figure 23a;
[0038] - figures 23' and 23" show the transversal translation group shown in figures 23a and 23b, respectively, in a position shifted to the right and left with respect to the longitudinal axis of the truck.
[0039] With reference to the appended drawings, a method of unloading a dumpster 2 for the collection of municipal waste by means of a truck 1, said dumpster 2 and said truck 1 according to the object of the present invention are described below.
[0040] According to a preferred embodiment the truck 1 is a truck or a lorry, and comprises a load area 10 suitable to receive the waste; preferably, inside the load area 10 is- a press suitable to move and compress the waste unloaded inside it.
[0041] Preferably, the truck 1 defines a longitudinal axis X-X, i.e. the axis along which it extends in length, a transversal axis Y-Y perpendicular to the longitudinal axis, for example parallel to the axles of the wheels of the truck 1, a vertical axis Z-Z along which the truck 1 extends in height.
[0042] According to a preferred embodiment, the truck 1 comprises unloading means 3 for the movement and unloading of the dumpster 2 in the load area 10, in particular, the unloading means 3 comprise a gripping member 30 suitable to engage the dumpster 2 so as to perform specific movements and operations on it.
[0043] In particular, the dumpster 2 comprises a bell- shaped frame 21 and a bottom frame 22, movable relative to one another; in other words the relative movement between the two frames permits the creation of a space between which the waste, by the effect of the force of gravity, falls into the load area 10 and is unloaded.
[0044] In addition, the dumpster 2 further comprises coupling means 200, placed above it, preferably on its top, specifically suitable to be engaged by the gripping member 30 for the movement thereof.
[0045] Preferably, the coupling means 200 comprise at least one unloading member 210 on the bell-shaped frame 21 and at least one gripping member 220 on the bottom frame 22. According to a preferred embodiment, the unloading member 210 and the gripping member 220 have a shape suitable to permit them to be coupled, for example in the shape of a ring, a bridge, a T, or cantilevered; in other words, as described below, the gripping member 30 is suitable to insert itself in the unloading member 210 and in the gripping member 220 to realise such engagement. [0046] According to a preferred embodiment, the method of the present invention comprises the steps of:
- moving the truck 1 alongside the dumpster 2;
- moving the gripping member 30 along the transversal axis Y-Y towards the dumpster 2 to insert the unloading member 210 and the gripping member 220;
- lifting in vertical translation the gripping member 30 and thus the dumpster 2, up to a predefined. height;
- rotating the gripping member 30 and thus the dumpster 2 flag-wise, until the dumpster 2 is located in an unloading position, over the load area 10;
- performing the unloading of the dumpster 2 controlling by means of the gripping member 30 the movement of the bell-shaped frame 21 by the unloading member 210;
[0047] Preferably, therefore, according to the characteristics of the truck 1 and the dumpster 2 mentioned above, the gripping member 30 comprised in the unloading means 3 of the truck 1, permits a movement of the dumpster 2 lying on a ground plane T, or buried in it depending on the embodiments thereof, such that the dumpster 2 is always gripped in the same manner by said gripping member 30 and is always brought into a clearly defined unloading position by the gripping members 30, according to the steps, and the translations described above. [0048] The dumpster 2 is_ in fact "skewered" by the gripping member 30, moved in translation, to engage the coupling means 200; the dumpster 2 is then brought to a predefined height, a height related to the height of the dumpster 2 itself; at said height, the dumpster 2 is rotated, "flag wise", i.e., without changes in elevation, but translating on a plane parallel or substantially parallel to the ground plane, to reach the unloading position, in which, finding itself above the load area 10 the unloading step is performed.
[0049] According to a preferred embodiment, the unloading method further comprises the step of:
- moving the dumpster 2 along the transversal axis Y-Y towards the truck 1.
[0050] Said step takes place following the engagement of the dumpster 2 by the gripping member 30 and before or during the lifting phase of the dumpster 2, for example to move the dumpster near the truck 1 before the rotation step thereof, so that in said "flag-wise" rotation step the rotation radius of the dumpster 2 is minimised.
[0051] In addition, according to a preferred embodiment, the unloading method further comprises the step of:
- positioning the gripping member 30 in a position of engagement, in front of the dumpster 2 starting from a rest position, in which the gripping member 30 is housed within the structure of the truck 1, in such a manner as not to protrude laterally therefrom.
[0052] Said step is carried out between the step of moving the truck 1 alongside the dumpster 2 and the step of transversal movement of the gripping member 30.
[0053] In other words, in some embodiments, while the truck 1 is moving, the gripping member 30 does not protrude from the lateral dimensions of the truck 1 and is retracted inside it, in such a way that there are no protrusions on the sides of the truck 1. Preferably, the gripping member 30 is retracted on the truck 1,' as shown in the appended drawings, in particular in figures 3 to 6, by means of a rotation, for example of 90°. In further other embodiments the gripping member 30 is retracted on the truck 1, as shown in the appended drawings, and in particular in figures 16 to 22", by translating along the transversal axis Y-Y.
[0054] Preferably, the realisation of the gripping step of the unloading method is possible thanks to the gripping member 30 which comprises an unloading arm 310 and a gripping arm 320, respectively suitable to insert themselves in the unloading member 210 and in the gripping member 220 when the gripping member 30 is moved in a transversal translation in the direction of the dumpster 2. [0055] In a preferred embodiment of the unloading method, in the steps in which the dumpster 2 is suspended, the gripping arm 320 engages the gripping member 220, upon actuation of the upward movement of the gripping member 30 and the force of gravity, while in the execution step of unloading the dumpster 2 the unloading arm 310 engages the unloading member 210 moving it, for example, in vertical translation, and moving the bell-shaped frame 21 in relation to the bottom frame 22.
[0056] Preferably, moreover, the unloading method of the present invention, comprises a step of securing the grip of the gripping member 30 on the dumpster 2; such step is achieved by special safety members 39 comprised in the unloading means 3, and preferably placed on the safety member 39 on the unloading arm 310, suitable to be actuated to engage the dumpster 2, once engaged by the gripping member 30 so as to mechanically lock said engagement. Preferably, in fact, the gripping member 30 comprises one or more mechanical linkages 390 mechanically moved by pistons 391, preferably air, suitable when operated, to engage the dumpster 2, and in particular its top surface so that the mutual engagement of the unloading arm 310 and the unloading member 210 is mechanically locked.
[0057] According to a preferred embodiment, the mechanical system of linkages 390, in its engagement end with the dumpster 2, has a scroll wheel 395 to facilitate engagement with the dumpster 2, and the complete extension of the pistons 391 which place said linkages 390 in movement.
[0058] Preferably, in fact, after inserting the unloading arm 310 in the unloading member 210, with the dumpster 2 still resting on the ground, the piston 391 sets in motion the linkage 390 engaging the wheel 395 with the dumpster 2. During the vertical translation of the gripping member 30, the action of the piston 390 continues until the linkage 390 passes beyond the dead centre position thus going to perform the safety locking 390 and mechanically blocking the dumpster 2.
[0059] According to a preferred embodiment moreover, the method of unloading described above is suitable to be performed on both sides of the truck 1, in other words, on both the right and left side; this way the method is applicable in situations in which the dumpster 2 is placed on the right and/or left side of the road. For example the method is thus suitable to be used both on roads where driving is on the right and roads where driving is on the left.
[0060] In other words, in some embodiments, before the aforementioned steps, the unloading method is suitable to perform the step of preparing the gripping member 30 on the truck 1 in a transversal position, ready for coupling a dumpster 2, wherein the gripping member 30 is placed in a direction for engagement on the right side or in a direction for engagement on the left side of the truck 1. In other words, the gripping member 30 is rotatable by 180° into two opposite positions so that it is suitable to couple dumpsters on both sides of the truck 1.
[0061] The present invention also relates to a dumpster 2 for waste collection suitable to be unloaded according to the unloading method described above, and thus having the aforementioned characteristics and the aforementioned components.
[0062] Preferably, moreover, the dumpster 2 has inside it a waste area 25 to accommodate a predefined quantity of waste; in other words, the bell-shaped frame 21 and the bottom frame 22 delimit said waste area 25.
[0063] According to a preferred embodiment, said waste area 25 is divided into a plurality of compartments 25' mutually separated, for example by walls or partitions 258 housed inside the dumpster 2.
[0064] In a preferred embodiment, moreover, the bell-shaped frame 21, preferably above it, has at least one input mouth 251 for the insertion of waste inside the waste area 25, for example an input mouth 251 for each compartment 25'.
[0065] Preferably, an access cap is fittable on the input mouth 251 suitable to allow and vice versa to prevent access to the waste area 25 only if in possession of the relevant mechanical or electronic security key.
[0066] In the embodiments in which the dumpster 2 is buried in the ground, the dumpster 2 protrudes from the ground with a dome 290, specifically suitable to be engaged by the gripping member 30; where on said dome 290 to at least one input mouth 251 is made; where inside said dome 290 the unloading member 210 and the gripping member 220 are housed. In a further embodiment the unloading member 210 and the gripping member 220 are outside the dome 290 in a position suitable to be coupled, for example at the sides thereof or in a specially shaped space.
[0067] According to a preferred embodiment, the bell-shaped frame 21 has a polygonal structure, for example, a prismatic or conical or frusto-conical or cylindrical structure, for example having a rectangular or square or circular or rhomboid cross-section.
[0068] According to a preferred embodiment, the bottom frame 22 has a bottom 222 suitable to close the lower opening of the bell-shaped frame 21 and a return structure 225 which extends from the gripping element 220 to the bottom 222 so that upon movement of the unloading member 210 and maintenance of the position of the gripping member 220 controlled by the gripping member 30, an opening is created through which the unloading of the waste contained in the dumpster 2 takes place by means of the force of gravity thereon. Preferably, said walls or dividing partitions 258 of the various compartments 25' are placed and included on said return structure 225.
[0069] According to a preferred embodiment, the bottom 222 comprises a plate 222', for example with a conical or pyramidal structure, so that the dumpster 2 is suitable to be configured in a closed configuration in which said plate 222' engages the bell-shaped frame 21 and a release configuration in which the bell-shaped frame 21 is axially spaced from the plate 222', and thus creates a space through which the waste is suitable to be unloaded. In particular figures 9c and 9c1 show, in cross-section, said configurations of the dumpster 2.
[0070] According to further embodiments, the bottom 222 comprises a plurality of doors 222", preferably hinged to the bell-shaped frame 21 so that a translation of the bell-shaped frame 21 corresponds to a rotation of said doors 222", so that the dumpster 2 is suitable to be configured in a closed configuration in which the doors 222" are closed on the bell-shaped frame 21 and a release configuration in which the bell-shaped frame 21 is moved vertically and the doors 222" hinged to it are rotated, in opening, engaged by the return structure 225. In other words, see for example figures 9a and 9a', figures 9b and 9b1, figures 9d' and 9e' is which said solution of a bottom 22 comprising a. plurality of doors 222", for example two or four doors is shown.
[0071] In particular, the return structure 225 comprises special rods 225" engaged, preferably hinged, to the doors 222" so that, when the bell-shaped frame 21 is placed in motion and the return structure 225 is instead held in position by the engagement of the gripping member 30 with the gripping member 220, the rods 225" push the doors 222", rotating them around their hinges. This way the bottom 222 is opened and the unloading of the waste takes place.
[0072] According to a preferred embodiment therefore a rod 225" corresponds to each door 222".
[0073] Preferably, the return structure 225 and the respective rods 225" are designed and structured in such a way as to support the weight of the waste on the doors 222" to keep them in the closed position.
[0074] According to a preferred embodiment, said rods 225' are protected by suitable protective frames, or are placed in the side walls 258 of the dumpster 2, or in the inner partition walls of the dumpster 2. [0075] According to a preferred embodiment, the unloading member 210 is placed on an unloading axis Y 1 -Y 1 , parallel to the transversal axis Y-Y of the truck 1 when it is alongside the dumpster 2 and the gripping member 220 is placed on a gripping axis X'-X1 of the dumpster 2, preferably parallel to the longitudinal axis X-X of the truck 1 when it is alongside the dumpster 2, or vice versa.
[0076] Preferably, therefore the unloading axis Y'-Y1 is perpendicular to the gripping axis X'-X' . The intersection of said axes is thus in the centre of the dumpster 2, preferably in the centre of gravity of the dumpster 2 when it is empty.
[0077] According to a preferred embodiment, the unloading member 210 comprises two unloading members 211, both suitable for being coupled, aligned on said unloading axis Y'-Y' and/or the gripping member 220 comprises two gripping members 220, both suitable for being coupled, aligned on said gripping axis X'-X', or vice versa.
[0078] According to a preferred embodiment, therefore, the gripping member 30 by translating along the transversal axis Y-Y inserts itself through said gripping members 221 and said unloading members 211, thus going to engage the dumpster 2 in four coupling points (see for example figure 8 or figure 14) . In further embodiments only one out of the unloading member 210 and the gripping member 220 comprises two members, so that the engagement of the gripping member 30 is in three coupling points.
[0079] The gripping member 30 thus has resulting characteristics suitable for allowing the aforesaid type of engagement. In other words, the gripping member 30 has a trident or fork shape having a central unloading arm 310 and a gripping arm 320, in the shape of a fork, having two prongs 320' and 320' 1 suitable to insert themselves in the respective gripping members 221, at the sides of the unloading arm 310.
[0080] Preferably, the unloading arm 310 has two engagement portions 310' and 310" placed at different heights, for engagement with the respective unloading member 211. Housed near said gripping portions 310' and 310" are, in addition, the aforesaid safety members 39 and the respective mechanical linkage systems 390 suitable to make the engagement of the unloading arm 310 and thus of the two gripping portions 310' and 310" integral . with the respective unloading members 211.
[0081] In particular reference is made to figures 12, 12', 13 and 14 for a better understanding of the engagement between the gripping member 30 and the unloading member 210 and the gripping member 220, in the configuration of four coupling points. [0082] The present invention also relates to a truck 1 for waste collection suitable to perform the steps of the unloading method according to the above description engaging a dumpster 2 in turn having the characteristics described above.
[0083] In particular the truck 1 has the unloading means 3 which comprise:
- a transversal translation group 31 suitable to perform the translation along the transversal axis Y-Y of the gripping member 30;
- a lifting group 32 suitable to move the gripping member 30 in height along the vertical axis Z-Z, ;
- a rotation group 33 suitable to rotate the gripping member 30.
[0084] Preferably, the lifting group 32 comprises a gripping member lifting mechanism 323 and an unloading mechanism 325 suitable to autonomously move the unloading member 210, in particular the unloading arm 310, preferably vertically.
[0085] In other words, the gripping member 30 is brought into vertical movement, in its entirety, by means of a suitable gripping member lifting mechanism 323, while for the specific implementation of the unloading operations and therefore the movement described above of the bell- shaped frame 21, the lifting assembly 32 comprises a special unloading mechanism 325, for example comprising one or more pistons, suitable to place in vertical motion the unloading arm 310, and thus permitting the vertical translation of the bell-shaped frame 21.
[0086] According to a preferred embodiment, the transversal translation group 31 is located on the truck 1 in a transversal position, for example, below the load area 10.
[0087] Preferably, the transversal translation group 31 comprises a front end 31' on which the gripping member 30 is placed and on which the lifting group 32 is placed which extends in height parallel to the load area 10, and the rotation group 33, suitable for placing in rotation the gripping member 30 rotating in its entirety the lifting group 32. In other words, the front end 31' is the part of the transversal translation group 31 which in the gripping operations of the dumpster 2 by the gripping member 30 is located closest to the dumpster 2.
[0088] According to a preferred embodiment, the transversal translation group 31 comprises a plurality of hollow telescopic transversal structures 311, wherein the inner structure 311' comprises the front end 31', and wherein the relative movement of the hollow telescopic transversal structures 311 involves the translation of the gripping member 30. Where at least one of said transversal telescopic structures 311 is fixed to the frame of the truck 1, while the other hollow telescopic transversal structure or structures 311 are movable in translation with respect thereto.
[0089] Preferably, the reciprocal translation of the hollow telescopic transversal structures 311 is obtained by means of suitable actuating cylinders housed in the internal space thereof.
[0090] According to a further embodiment, the transversal translation assembly 31 · comprises a gripping member holder 350, on which the front end 31' is located. In other words, the gripping member holder 350 is substantially a carriage.
[0091] The transversal translation group 31 is suitable to translate along the transversal axis Y-Y in such a way that by translating, the gripping member 30 is accommodated in its entirety on the truck 1, preferably parallel to the transversal axis Y-Y, and is suitable to couple the dumpster 2 to start the unloading operations described above.
[0092] According to a preferred embodiment, the gripping member holder 350, working as a front end 31', is suitable to support the lifting group 32 and the rotation group 33, and thus the gripping member 30. The translation of the gripping member holder 350 thus corresponds to the transversal translation of the lifting group 32 and of the rotation group 33.
[0093] According to a preferred embodiment, the transversal translation group 31 comprises a transversal translation system 360, to which the gripping member holder 350 is movably attached; in other words, the system 360 is suitable to command the movement along the transversal axis Y-Y of the gripping member holder 350 so as to bring it inside the truck 1 and/ or to insert it in the dumpster 2.
[0094] According to a preferred embodiment, the translation system 360 is suitable to bring the gripping member holder 350 into a central position on the truck 1, preferably at the centreline thereof; or in further embodiments, the translatory system 360 is suitable to bring the gripping member holder 350 into a position offset from the centre of the truck 1 i.e. not on the centreline thereof.
[0095] According to a preferred embodiment, the translation system 360 is suitable to bring the gripping member holder 350 to the ends of the truck 1 to couple the dumpster 2; preferably the translation system 360 is suitable to translate the gripping member holder 350 into a cantilever position outside the sides of the truck 1 to perform the coupling of the dumpster 2. [0096] According to a preferred embodiment, the translation system 360 is suitable to move the gripping member holder 350 along the transversal axis Y-Y in both directions, so as to make the truck 1 suitable for operating with dumpsters 2 placed on both sides of the truck 1.
[0097] According to a preferred embodiment, the translation system 360 comprises a base frame 361 attached to the frame of the truck 1.
[0098] Preferably, the translation system 360 comprises a translating frame 362 movable in a transversal direction to the base frame 361.
[0099] According to a preferred embodiment, the translating frame 362 comprises two main parts, the first translating frame 362' and the second translating frame 362". Preferably, the first translating frame 362' and the second translating frame 362' are movable in the two opposite directions, both simultaneously and separately from each other.
[00100] According to a preferred embodiment, the gripping member holder 350 is fitted movably in a transversal direction to the base frame 361 and/or the translating frame 362.
[00101] Preferably, the movement between the base frame
361 and translating frame 362 is obtained by means of one or more primary auxiliary cylinders 363 having the ends attached to the base frame 361 and to the translating frame 362.
[00102] Similarly, the movement between the translating frame 362, for example, in the embodiment comprising the first translating frame 362' and the second translating frame 362", and the gripping member holder 350 is obtained by means of one or more secondary auxiliary cylinders 365 having the ends respectively attached to the translating frame 362 and to the gripping member holder 350. In other words the maximum translation of the gripping member holder 350 corresponds to the sum of the strokes of the primary 363 and secondary 365 auxiliary cylinders .
[00103] According to a further embodiment, the translation system 360 comprises a base frame 361 attached to the frame of the truck 1 and. the gripping member holder 350 is suitable to translate thereon. In particular, the translation system 360 comprises a rack and pinion or worm screw - nut screw system 366 for moving the gripping member holder 350 with respect to the base frame 361 and / or the translating frame 362.
[00104] According to a further embodiment, the translatory system 360 comprises a pulley -chain system 369 for moving the gripping member holder 350 with respect to the base frame 361 and / or the translating frame 362.
[00105] Furthermore, in yet a further embodiment the translatory system 360 comprises a pantograph system 368 for moving the gripping member holder 350 and / or for moving the translating frame 362 with respect to the base frame 361.
[00106] According to the aforesaid embodiments, translation systems suitable to comprise one or more of the aforesaid translation systems are further provided for. For example mixed systems are provided for moving the translating frame 362, for example in its translating parts such as the first translating frame 362' and the second translating frame 362" with respect to the base frame 361. Preferably, in fact, the reciprocal movement of the parts is obtained by means of a system of auxiliary cylinders, while the movement of the gripping member holder 350 with respect to the fixed frame 361 is obtained by a pulleys-chains system 369, or by means of a pantograph system 368, or by means of a rack and pinion system 366. This way, the translation modes of the gripping member holder 350 may be innumerable, as may the lengths of the strokes that it can perform.
[00107] According to a preferred embodiment, in turn the lifting group 32 also comprises a plurality of hollow telescopic vertical structures 321, comprising a lower structure 321' hinged at the front end 31' of the translation group 31, and wherein the reciprocal movement of the hollow telescopic vertical structures 321 involves the vertical translation of the gripping member 30.
[00108] Preferably, the reciprocal translation of said hollow telescopic vertical structures 321 is obtained by means of special actuating cylinders housed in the internal space thereof and/or by means of a return system with pulleys and chains.
[00109] According to a preferred embodiment, the vertical translation assembly 37 has one extension, comprising two hollow vertical telescopic structures 321, or has two extensions, comprising three hollow vertical telescopic structures 321.
[00110] According to a preferred embodiment, therefore, the gripping member 30 is fitted on one of said hollow vertical telescopic structures 321.
[00111] Preferably, the rotation unit 33 rotates the gripping member 30 by rotating the lifting assembly 32 in its entirety.
[00112] Preferably, the rotation group 33 comprises a system of rollers and bushings, suitable to permit a rotation of 90° or 180° or 270° by the gripping member 30; in other words, the rotation group 33 is suitable to move the gripping member 30 in its rotation steps, for example in its rotation flag-wise, but also in the rotation between the rest position and the position of engagement, or even in its positioning for engagement with a dumpster to the right or left of the truck 1.
[00113] According to a preferred embodiment the rotation group 33 is located on the gripping member holder 350.
[00114] According to a preferred embodiment, moreover, the rotation unit 33 comprises a rotation mechanism 331 comprising:
- a linkage 331, whereon the lifting group 32 is hinged;
- a first piston 333' suitable to engage the linkage 331 and rotate the lifting group 32 and therefore the gripping member 30 by 90°, between the rest position and the engagement position;
- a second piston 333" suitable to engage in turn the linkage 331 and to rotate, working with the first piston 333' the lifting group 32 and thus the gripping member 30, by 180°, so to perform its flag-wise rotation.
[00115] In further preferred embodiments the rotation group 33, as a function of the combination and mutual positioning of the linkage 331, the first piston 333' and the second piston 333" permits different positionings of the gripping member 30, in any case permitting movements from 0 to 270° . [00116] In further embodiments the rotation group 33 comprises, instead, a rotating actuator cylinder.
[00117] According to a preferred embodiment, all the. movements of the unloading means 3 are controlled and regulated by a suitable control system, for example electromechanical and/or pneumatic, suitable, upon command from the operator, to carry out the operations and movements described above.
[00118] Preferably, the unloading method described above corresponds to comparable repositioning steps of the dumpster 2, which starting from the unloading position is replaced in position on the ground plane, or inside it, at the edge of the carriageway.
[00119] According to a preferred embodiment, the load area of the truck further comprises a cover 100 of the unloading area, suitable to rotate or translate parallel to its lying plane, so as to be suitable to close the upper opening of the load area 10 in which the dumpster 2 is placed to perform the unloading step, when the truck 1 is moving, without, however, resulting in further strokes or encumbrances along the vertical axis Z-Z. The load area 10 also comprises a side door 150 in turn suitable to close the unloading area to prevent gusts of wind from catching the waste stowed therein.
[00120] Innovatively, the unloading method of a dumpster, the dumpster and the truck which the present invention relate to, are suitable to resolve the problems typical of the prior art; in particular the unloading of waste into the load area is predictable and reproducible over time, each time, thus allowing a prediction of the falling of the waste in the unloading step, which is therefore no longer random, the positioning of the dumpster on the load area always being the same. Advantageously, the method of unloading a dumpster is possible for dumpsters placed on both sides of the truck 1.
[00121] Advantageously, therefore, during the unloading step, some portions of the load area are fillable with a predefined quantity of waste in a certain manner. For example, dumpsters may be provided for having mutually divided compartments, and thus compartments specifically suitable to permit a separate collection of waste. The certain positioning of the dumpster on the load area thus makes it possible to predict in which area the content of one compartment is unloaded and in which the contents of another compartment .
[00122] Advantageously, the system is fully automatic and does not require the engagement of the gripping member 30 with the dumpster 2 to be performed manually by an operator. A single operator, in the cabin of the truck, is needed to perform the operations of unloading and repositioning the dumpster.
[00123] A further advantageous aspect is that the gripping member and the dumpster reciprocally engage each other so as to prevent bending of the dumpster when suspended at a height, having, for example the centre of gravity shifted with respect to the centre of the dumpster. Preferably, in fact, the four coupling points thereof are suitable to prevent the dumpster from bending for example when the different compartments house waste of different types and thus of different weights, such as paper or glass.
[00124] Yet a further advantageous aspect is that the gripping member and the dumpster reciprocally engage each other so as to prevent wobbling of the dumpster when suspended at a height. In other words by means of the safety members a solid engagement of the gripping member with the dumpster is achieved, a coupling, and consequent release, which is possible only if mechanically commanded.
[00125] Advantageously the gripping members are ■ suitable to be housed inside the sides of the truck, for example, they are suitable to be positioned behind the cab of the truck.
[00126] Another beneficial aspect involves the use of mixed gripping members, in order to obtain different lengths of stroke for different commands; for example solutions are advantageously provided for in which the movement of the first translating frame relative to the fixed frame is achieved with one type of actuation system, e.g. auxiliary pistons, while the movement of the second translating frame relative to the first translating frame is achieved by another type of actuation system, e.g. the pulley -chains system.
[00127] Different embodiments of the gripping member
30, and in particular of its height above the ground plane, may be provided for depending on the type of dumpster and depending on its height
[00128] Similarly, different embodiments are suitable to have different shapes and different heights as regards the various gripping and unloading arms, or the positioning of the various groups for the translation of the gripping member. Some examples are shown in the appended figures 3a, 3b and 3c and 16a, 16b and 19a, 19b.
[00129] Additional embodiments provide for the gripping member or the unloading means to have compensation elements suitable to resolve problems related to clearance in the engagement and movement of the various components.
[00130] A person skilled in the art may make variations to the invention described so as to satisfy specific requirements replacing elements with others functionally equivalent. I addition, each variant described as belonging to a possible embodiment may be realised independently of the other embodiments.

Claims

Claims
1. Method of unloading a dumpster (2) for the collection of waste, by means of a truck (1)
wherein the truck (1) has a longitudinal axis (X-X) , a transversal axis (Y-Y) and a vertical axis (Z-Z), and comprises a load area (10) and unloading means (3), for handling and unloading the dumpster (2) in the load area (10), comprising a gripping member (30),
wherein the dumpster (2) has a bell-shaped frame (21), a bottom frame (22), where the bell-shaped frame (21) is movable relative to the bottom frame (22), and coupling means (200), located above the dumpster (2), comprising at least one unloading member (210) on the bell-shaped frame (21) and at least one gripping member (220) on the bottom frame (22), wherein the unloading member (210) and the gripping member (220) have a shape suitable to allow them to be coupled, for example in the shape of a ring, a bridge, a T, or cantilevered,
and wherein the method comprises the steps of:
- moving the truck (1) alongside the dumpster (2) ;
- moving the gripping member (30) along the transversal axis (Y-Y), towards the dumpster (2), to insert it in the unloading member (210) and the gripping member (220) ;
- lifting in vertical translation the gripping member (30) and thus the dumpster (2), up to a predefined height ;
- rotating the gripping member (30) and thus the dumpster (2) flag-wise, until the dumpster (2) is located in an unloading position, over the load area (10) ;
- performing the unloading of the dumpster (2) controlling by means of the gripping member (30) the movement of the bell-shaped frame (21) through the unloading member (210) ;
wherein before the above steps, the method comprises the step of:
- preparing the gripping member (30) on the truck (1) in a transversal position wherein the gripping member (30) is placed in a direction for engagement on the right side or in a direction for engagement on the left side of the truck (1) .
2. Method of unloading a dumpster (2) according to claim 1, further comprising the step of:
- moving the dumpster (2) along the transversal axis (Y- Y) , towards the truck (1);
wherein said step takes place after the engagement of the dumpster (2) by the gripping member (30), inserted in the unloading member (210) and the gripping member (220), and before, or during the lifting step of the dumpster (2) .
3. Method of unloading a dumpster (2) according to any of the previous claims, further comprising the step of: - positioning the gripping member (30) in a position of engagement, in front of the dumpster (2) starting from a rest position, in which the gripping member (30) is housed within the structure of the truck (1) , in such a manner as not to protrude laterally therefrom;
wherein said step is carried out between the step of moving the truck (1) alongside the dumpster (2) and the step of transversal movement of the gripping member (30) towards said dumpster (2);
wherein said step is carried out by translating the gripping member (30) along the transversal axis (Y-Y)
4. Method of unloading a dumpster (2) according to any of the previous claims, wherein the gripping member (30) comprises an unloading arm (310) and a gripping arm (320), respectively suitable to insert the unloading member (210) and the gripping member (220) of the dumpster (2) in the step of transversal translation movement of the gripping member (30) .
5. Method of unloading a dumpster (2) according to claim 4, wherein during the steps in which the dumpster (2) is suspended,, the gripping arm (320) engages the gripping member (220) , upon actuation of the upward movement of the gripping member (30) and the force of gravity, while in the execution step of unloading the dumpster (2) the unloading arm (310) engages the unloading member (210) moving it, for example, in vertical translation, and moving the bell-shaped frame (21) in relation to the. bottom frame (22) .
6. Method of unloading a dumpster (2) according to claim 5, further comprising a step of securing the grip of the gripping member (30) on the dumpster (2) by means of special safety members (39) comprised in the unloading means (3), and preferably placed on the safety member
Figure imgf000039_0001
on the unloading arm (310), suitable to be actuated to engage the dumpster (2), once coupled by the gripping member (30) to mechanically lock. the reciprocal engagement .
7. Dumpster (2) for the collection of waste suitable to be unloaded according to the unloading method according to any of the previous claims, wherein the bell-shaped frame (21) and the bottom frame (22) delimit a waste area (25) housing a predefined quantity of waste, wherein the bottom frame (22) has a bottom (222) suitable to close the lower opening of the bell-shaped frame (21) and a pulley structure (225) which extends from the gripping member (220) to the bottom (222) so that upon the movement of the unloading member (210) and maintenance of the position of the gripping member (220) controlled by the gripping member (30) , an opening is created through which the unloading of the waste contained in the dumpster (2) takes place.
8. Truck (1) for waste collection suitable to carry out the steps of the unloading method according to any of the claims from 1 to 6, wherein the unloading means (3) comprise:
a transversal translation group (31) suitable to perform the translation along the transversal axis (Y-Y) of the gripping member (30);
- a lifting group (32) suitable to move in height along a vertical axis (Z-Z), the gripping member (30);
- a rotation group (33) suitable to rotate the gripping member ( 30 ) ;
wherein the lifting group (32) comprises a gripping member lifting mechanism (323) and an unloading mechanism (325) suitable to autonomously move the unloading member (210), in particular the unloading arm (310), vertically along the vertical axis (Z-Z).
9. Truck (1) according to claim 3, wherein the transversal translation group (31) is placed in a transversal position below, the load area (10) and/or below the subframe (190) of the truck, and comprises a front end (31') on which the gripping member (30) is placed and on which the lifting group (32) is placed, which extends in height parallel to the load area (10), and the rotation group (33) , suitable to rotate the gripping member (30) rotating in its entirety the lifting group (32), for example to move respectively into the two rest positions, for inserting the dumpster (2) on the right and on the left of said truck (1) .
10. Truck (1) according to any one of the claims 3 or 4, wherein the transversal translation group (31) comprises a plurality of hollow telescopic transversal structures (311), wherein the inner structure (311') comprises the front end (31'), and wherein the relative movement of the hollow telescopic transversal structures (311) involves the transversal translation of the gripping member (30).
11. Truck (1) according to any one of claims 8 or 9, wherein the transversal translation group (31) comprises a gripping member holder (350), whereon there is the front end (31'), suitable to translate along the transversal axis (Y-Y) so that the gripping member (30) is entirely housed on the truck (1), in a position parallel to the transversal axis (Y-Y) .
12. Truck (1) according to claim 6, wherein the transversal translation group (31) comprises a translation system (360), comprising a base frame (361) fixed to the frame of the truck (10), and suitable to move in translation, in both directions, the gripping member holder (350) with respect to said base frame (361) .
13. Truck (1) according to claim 7, wherein the translation system (360) comprises a translating frame (362), preferably comprising a first translating frame (3621) and a second translating frame (362"), movable in a transversal direction (Y-Y) relative to the base frame (361), supporting the gripping member holder (350) in its translation along the transversal axis (Y-Y) .
14. Truck (1) according to any of the claims 12 or 13, wherein the translation system (360) comprises a pulley- chains system (369) for moving the gripping member holder (350) along the transversal axis (Y-Y).
15. Truck (1) according to any of the claims from 9 to
14, wherein the lifting group (32) comprises a plurality of hollow telescopic vertical structures (321), preferably two or three, comprising a lower structure (321') engaged to the front end (31') of the translation group (31), wherein the relative movement of the hollow telescopic vertical structures (321), for example by means of special actuator cylinders or a return system with pulleys and chains, involves the translation along the vertical axis (Z-Z) of the gripping member (30) .
16. Truck (1) according to any of the claims from 9 to
15, wherein the rotation group (33) comprises a rotation mechanism (331) comprising:
- a linkage (331), whereon the lifting group (32) is hinged;
- a first piston (333 ') suitable to engage the linkage (331) and rotate the lifting group (32) and therefore the gripping member (30) by 90°, between the rest position and the engagement position;
- a second piston (333") suitable to engage in turn the linkage (331) and rotate working together with the first piston (33') the lifting group (32) and therefore the gripping member (30) by 180°, so to perform its flag-wise rotation.
PCT/IB2015/051244 2014-02-20 2015-02-18 Bilateral method of unloading a dumpster WO2015125091A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITBS20140046 2014-02-20
ITBS2014A000046 2014-02-20
ITBS2014A000091 2014-04-30
ITBS20140091 2014-04-30

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228591A (en) * 1992-10-09 1993-07-20 Jones John S Multi-compartment container with collapsible bottom for mechanized recyclable-trash collection
WO1996039347A2 (en) * 1995-06-03 1996-12-12 Peters Klaus Tilmann Collection system for materials destined for recycling
WO1999054237A2 (en) * 1998-04-22 1999-10-28 Nord Engineering Di Armando Lodovico & C.S.N.C. Device for handling waste collection containers
AT5368U1 (en) * 2001-06-21 2002-06-25 Waizinger Gottfried COLLECTION CONTAINER FOR WASTE, IN PARTICULAR WASTE GLASS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228591A (en) * 1992-10-09 1993-07-20 Jones John S Multi-compartment container with collapsible bottom for mechanized recyclable-trash collection
WO1996039347A2 (en) * 1995-06-03 1996-12-12 Peters Klaus Tilmann Collection system for materials destined for recycling
WO1999054237A2 (en) * 1998-04-22 1999-10-28 Nord Engineering Di Armando Lodovico & C.S.N.C. Device for handling waste collection containers
AT5368U1 (en) * 2001-06-21 2002-06-25 Waizinger Gottfried COLLECTION CONTAINER FOR WASTE, IN PARTICULAR WASTE GLASS

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