US3471003A - Refuse conveyor for trash collectors or trucks - Google Patents

Refuse conveyor for trash collectors or trucks Download PDF

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Publication number
US3471003A
US3471003A US635435A US3471003DA US3471003A US 3471003 A US3471003 A US 3471003A US 635435 A US635435 A US 635435A US 3471003D A US3471003D A US 3471003DA US 3471003 A US3471003 A US 3471003A
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Prior art keywords
chute
pushers
rollers
conveyor
garbage
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US635435A
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Lennart Osten Evert Sandstrom
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Holms Industri AB
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Holms Industri AB
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    • 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
    • B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
    • B65F3/18—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with endless conveyors, e.g. elevators

Definitions

  • This invention relates to a device in garbage collectors or trucks having an elevator in the form of an inclined chute along the bottom of which pushers operating on an endless path scrape garbage upwards from the lower end of said chute.
  • Hitherto known garbage collectors of this type have been to several inconveniences, among which the most important may be that the endless chains used in these collectors and which run over sprocket or toothed wheels easily may get out of order if objects accompanying the garbage, such as stones, wood pieces or similar objects are jammed between the chains and the Wheels. In severe cases this jamming may result in breakage of the chain causing expensive waste of time and considerable costs for reconditioning. If one tooth is out of the chain the result will be that the pushers take an inclined position relative to the direction of movement which in turn, as is easily-understood, results in the garbage being pushed to one side of the chute with consequent functional troubles.
  • One main object of the invention is to remove said inconveniences by providing a device in'which the pushers on both sides of, and preferably symmetrically in relation to, the longitudinal center line of the'path of movement are interconnected by endless freely running belts and arranged so that at the turning 1 stations of the path they engage with a central portion frictionally with turning rollers located at said stations.
  • reference numeral denotes a chute forming part of an elevatorand having a flat bottom 12 and upwardly projecting lateral edge portions 14.
  • the chute is intended to be mounted in inclined position on a garbage collector (not shown) of suitable type, for example, a collector truck intended for street cleaning, the chute being mounted so that its lower end is positioned in front of a roller brush, which forms part of the garbage collector (not shown) and which feeds the garbage onto the bottom 12 of the chute.
  • a garbage collector (not shown) of suitable type, for example, a collector truck intended for street cleaning, the chute being mounted so that its lower end is positioned in front of a roller brush, which forms part of the garbage collector (not shown) and which feeds the garbage onto the bottom 12 of the chute.
  • the other end 3,471 ,003 Patented Oct. 7, 1969 "ice of said chute is then in a suitable position over a container for collecting the garbage, which container also constituting a part of the garbage collector, is not shown here.
  • the garbage is conveyed upwardly along the chute by a series of pushers 16 mounted at suitable interspaces so as to scrape along the bottom of the chute from its lower end in the upward direction.
  • the pushers move on an endless path and in the embodiment shown they consist of L-irons one flange of each of which carries a longitudinal, band-like strip 18, which may be, for example, rubber and has an edge portion projecting over the flange to constitute that part of the pushers 16, which scrapes along the bottom 12 of the chute.
  • the pushers 16 are retained on the aforementioned endless path by being mounted in their operative position in parallel relationship to one another and transversally to the longitudinal direction of the chute on endless belts 20 which are disposed at a suitable spacing from one another in parallel relationship and mounted symmetrically in relation to the centers of the transversally extending pushers.
  • endless belts 20 which may be V-belts and which are located on either side of said centers and with substantially the same spacing therefrom.
  • the endless conveyor formed in the manner described hereinbefore passes in conventional manner about two turning rollers 22 located at a predetermined spacing from one another and mounted each at one end of a support generally denoted by 24.
  • One of said rollers constitutes in the presented embodiment the driving roller for the conveyor device, as shall be described more in detail below.
  • the engagement between the conveyor device and the turning rollers is effected by a central portion of each pusher 16, the belts 20 thus being entirely free from driving engagement.
  • the distribution of the pushers over the endless path is suitably made so that always at least three of the pushers are in contact with each of the turning rollers. Further the length of the conveyor and the diameter of the turning rollers are adjusted in relation to one another in such a manner that the pushers do not always engage the same places on the turning rollers whereby a more equal distribution of the wear of said rollers is gained.
  • said pushers are provided with projections 26 engaging the lateral edge portions of the turning rollers during their passage over said rollers.
  • the projections 26 are formed as folds on sheet strips 28 which are secured to the free flanges 30 of the pushers and which in addition on both sides of the folds engaging the turning rollers are provided with other folds 32 overlapping and forming folds for the V-belts 20.
  • the support 24 mentioned above is suitably formed of two tubes 34 arranged in telescopic relationship, i.e. the one tube is displaceable within the other and setable relative to the other by means of a screw member indicated at 36. These tubes support at their free ends U-shaped yokes 38 in which the turning rollers 22 are mounted on pivot 40. As is seen from the drawing, one of the tubes 34 carries tube-shaped lateral pieces 42 which at their free ends are combined with lateral plates 44 intended to be secured onto suitable parts of the frame of the garbage collector.
  • the support 24 Adjacent the upper driving turning roller 22 the support 24 supports a gear box 46, the output shaft of which is a prolongation of the pivot 40 of the upper turning roller and the input shaft of which is connected with a hydraulic motor 48 the inlet 'and outlet of which for oil under pressure is indicated at 50.
  • the telescopic arrangement of the support tubes 34 permits adjusting the spacing between the turning rollers so as to obtain suitable frictional engagement between the driving turning roller 22 and the pushers 60.
  • This engagement can also, if desired, be adjusted by inflatable ring members 52 mounted on the peripheries of the rollers 22.
  • These ring members improve also considerably the advantage obtained With the device according to the invention, in that larger objects possibly following with the garbage, such as larger stones, wood pieces and similar obstruction articles, do not cause any damage if they are jammed between the pushers and the ring members.
  • This effect of said ring members can also be obtained by making the ring members massive instead of inflatable but of some suitable resilient material.
  • said conveyor comprising a belt and a plurality of elongate pushers secured to said belt in spaced, parallel relation to one another and said axes longitudinally of the belt to project from said belt and to have limited pivotal movement transverse to said plane, and positioned to engage said rollers thereby to effect drive of said conveyor,
  • rollers having resilient contact with approximately the mid portions only of said pushers, whereby substantial portions of each pusher project beyond opposite ends of the rollers, and
  • said pushers being disposed so that as the lower reach of the conveyor passes in an upward direction above said chute, the pushers scrape material on the chute to the upper end of the chute.
  • an endless conveyor mounted above said chute to travel around said rollers, and comprising two parallel endless flexible belts spaced laterally from one another, and
  • rollers having resilient contact with said pushers intermediate the ends of said pushers
  • said pushers being disposed so that as the lower reach of the conveyor passes in an upward direction above said chute, the pushers scrape material on the chute to the upper end of the chute,
  • each pusher being symmetrically disposed with reference to the longitudinal centerline of said conveyor.
  • rollers having resilient contact with said pushers intermediate the ends of said pushers
  • said pushers being disposed so that as the lower reach of the conveyor passes above said chute, the pushers scrape material ori the chute to the upper end of the chute,
  • each pusher having a bracket secured thereto
  • each of said brackets having intermediate its ends a projection positioned to have frictional engagement with a side of each roller during the movement of said conveyor, whereby said projections operate to guide said pushers over said rollers, and to increase the surface contact between said rollers and pushers during the movement of said conveyor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Refuse Collection And Transfer (AREA)

Description

United States Patent US. Cl. 198-174 3 Claims ABSTRACT OF THE DISCLOSURE In a garbage or refuse disposal truck having an upwardly inclined trash chute, and drive and idler rollers mounted; respectively, at opposite .ends, of the chute, an endless conveyor is mounted to travel just above the chute. The conveyor comprises a" plurality of .spaced, parallel, transverse blades or pushers, which are secured adjacent opposite ends thereof to'two; spaced, endless belts, so that the blades on the lower" reach of the conveyor have wiping engagement with the face of the chute to push trash upwardly over the upper end of the chute. The two lrollers are resilient, and are positioned frictionally to engage the midpoints onlyof the blades, so that the latter can pivot about their midpoints to pass over an obstruction on the face of the chute.
This invention relates to a device in garbage collectors or trucks having an elevator in the form of an inclined chute along the bottom of which pushers operating on an endless path scrape garbage upwards from the lower end of said chute.
Hitherto known garbage collectors of this type have been to several inconveniences, among which the most important may be that the endless chains used in these collectors and which run over sprocket or toothed wheels easily may get out of order if objects accompanying the garbage, such as stones, wood pieces or similar objects are jammed between the chains and the Wheels. In severe cases this jamming may result in breakage of the chain causing expensive waste of time and considerable costs for reconditioning. If one tooth is out of the chain the result will be that the pushers take an inclined position relative to the direction of movement which in turn, as is easily-understood, results in the garbage being pushed to one side of the chute with consequent functional troubles.
One main object of the invention is to remove said inconveniences by providing a device in'which the pushers on both sides of, and preferably symmetrically in relation to, the longitudinal center line of the'path of movement are interconnected by endless freely running belts and arranged so that at the turning 1 stations of the path they engage with a central portion frictionally with turning rollers located at said stations.
Further objects and advantages of the invention will become apparent from the following==description, considered in connection with the accompanying drawing, which is a perspective view of an embodiment of the invention and which forms part of the specification.
Referring to the drawing, reference numeral denotes a chute forming part of an elevatorand having a flat bottom 12 and upwardly projecting lateral edge portions 14. The chute is intended to be mounted in inclined position on a garbage collector (not shown) of suitable type, for example, a collector truck intended for street cleaning, the chute being mounted so that its lower end is positioned in front of a roller brush, which forms part of the garbage collector (not shown) and which feeds the garbage onto the bottom 12 of the chute. The other end 3,471 ,003 Patented Oct. 7, 1969 "ice of said chute is then in a suitable position over a container for collecting the garbage, which container also constituting a part of the garbage collector, is not shown here.
The garbage is conveyed upwardly along the chute by a series of pushers 16 mounted at suitable interspaces so as to scrape along the bottom of the chute from its lower end in the upward direction. The pushers move on an endless path and in the embodiment shown they consist of L-irons one flange of each of which carries a longitudinal, band-like strip 18, which may be, for example, rubber and has an edge portion projecting over the flange to constitute that part of the pushers 16, which scrapes along the bottom 12 of the chute.
The pushers 16 are retained on the aforementioned endless path by being mounted in their operative position in parallel relationship to one another and transversally to the longitudinal direction of the chute on endless belts 20 which are disposed at a suitable spacing from one another in parallel relationship and mounted symmetrically in relation to the centers of the transversally extending pushers. In the illustrated embodiment there are two such belts 20 which may be V-belts and which are located on either side of said centers and with substantially the same spacing therefrom.
The endless conveyor formed in the manner described hereinbefore passes in conventional manner about two turning rollers 22 located at a predetermined spacing from one another and mounted each at one end of a support generally denoted by 24. One of said rollers constitutes in the presented embodiment the driving roller for the conveyor device, as shall be described more in detail below. The engagement between the conveyor device and the turning rollers is effected by a central portion of each pusher 16, the belts 20 thus being entirely free from driving engagement. The distribution of the pushers over the endless path is suitably made so that always at least three of the pushers are in contact with each of the turning rollers. Further the length of the conveyor and the diameter of the turning rollers are adjusted in relation to one another in such a manner that the pushers do not always engage the same places on the turning rollers whereby a more equal distribution of the wear of said rollers is gained.
In order to obtain good guiding and sufiiciently strong frictional engagement between the pushers 16 and the turning rollers 22 said pushers are provided with projections 26 engaging the lateral edge portions of the turning rollers during their passage over said rollers. In the illustrated embodiment the projections 26 are formed as folds on sheet strips 28 which are secured to the free flanges 30 of the pushers and which in addition on both sides of the folds engaging the turning rollers are provided with other folds 32 overlapping and forming folds for the V-belts 20.
The support 24 mentioned above is suitably formed of two tubes 34 arranged in telescopic relationship, i.e. the one tube is displaceable within the other and setable relative to the other by means of a screw member indicated at 36. These tubes support at their free ends U-shaped yokes 38 in which the turning rollers 22 are mounted on pivot 40. As is seen from the drawing, one of the tubes 34 carries tube-shaped lateral pieces 42 which at their free ends are combined with lateral plates 44 intended to be secured onto suitable parts of the frame of the garbage collector. Adjacent the upper driving turning roller 22 the support 24 supports a gear box 46, the output shaft of which is a prolongation of the pivot 40 of the upper turning roller and the input shaft of which is connected with a hydraulic motor 48 the inlet 'and outlet of which for oil under pressure is indicated at 50.
As is easily understood, the telescopic arrangement of the support tubes 34 permits adjusting the spacing between the turning rollers so as to obtain suitable frictional engagement between the driving turning roller 22 and the pushers 60. This engagement can also, if desired, be adjusted by inflatable ring members 52 mounted on the peripheries of the rollers 22. These ring members improve also considerably the advantage obtained With the device according to the invention, in that larger objects possibly following with the garbage, such as larger stones, wood pieces and similar obstruction articles, do not cause any damage if they are jammed between the pushers and the ring members. This effect of said ring members can also be obtained by making the ring members massive instead of inflatable but of some suitable resilient material.
What I claim is:
1. In a mechanical garbage and trash collector,
an upwardly inclined chute,
a pair of longitudinally spaced rollers mounted above said chute to rotate in a common plane on spaced parallel axes,
an endless, flexible conveyor mounted above said chute to travel around said rollers,
means for driving one of said rollers,
said conveyor comprising a belt and a plurality of elongate pushers secured to said belt in spaced, parallel relation to one another and said axes longitudinally of the belt to project from said belt and to have limited pivotal movement transverse to said plane, and positioned to engage said rollers thereby to effect drive of said conveyor,
said rollers having resilient contact with approximately the mid portions only of said pushers, whereby substantial portions of each pusher project beyond opposite ends of the rollers, and
said pushers being disposed so that as the lower reach of the conveyor passes in an upward direction above said chute, the pushers scrape material on the chute to the upper end of the chute.
2. In a mechanical garbage and trash collector,
an upwardly inclined chute,
a pair of longitudinally spaced rollers mounted above said chute to rotate on spaced parallel axes,
means for driving one of said rollers,
an endless conveyor mounted above said chute to travel around said rollers, and comprising two parallel endless flexible belts spaced laterally from one another, and
a plurality of pushers secured to said belts in spaced 4. relation to one another longitudinally of the belts to project from said belts and positioned to engage said rollers thereby to effect drive of said conveyor,
said rollers having resilient contact with said pushers intermediate the ends of said pushers,
said pushers being disposed so that as the lower reach of the conveyor passes in an upward direction above said chute, the pushers scrape material on the chute to the upper end of the chute,
said two parallel endless flexible belts interconnecting said pushers, and
each pusher being symmetrically disposed with reference to the longitudinal centerline of said conveyor.
3. In a mechanical garbage and trash collector,
an upwardly inclined chute,
a pair of longitudinally spaced rollers mounted above said chute to rotate on spaced parallel axes,
an endless conveyor mounted above said chute to travel around said rollers,
means for driving one of said rollers,
a plurality of pushers secured to said conveyor in spaced relation to one another longitudinally of the conveyor to project from said conveyor and positioned to engage said rollers thereby to elfect drive of said conveyor,
said rollers having resilient contact with said pushers intermediate the ends of said pushers,
said pushers being disposed so that as the lower reach of the conveyor passes above said chute, the pushers scrape material ori the chute to the upper end of the chute,
each pusher having a bracket secured thereto, and
each of said brackets having intermediate its ends a projection positioned to have frictional engagement with a side of each roller during the movement of said conveyor, whereby said projections operate to guide said pushers over said rollers, and to increase the surface contact between said rollers and pushers during the movement of said conveyor.
6/1957 Remer 198-174 12/1957 Hapman l98--168 RICHARD E. AEGERTER, Primary Examiner
US635435A 1967-05-02 1967-05-02 Refuse conveyor for trash collectors or trucks Expired - Lifetime US3471003A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527723A (en) * 1894-10-16 sarg-ent
US2533813A (en) * 1948-05-27 1950-12-12 Joseph M Jones Tobacco elevator
US2795056A (en) * 1955-01-04 1957-06-11 Proctor And Schwartz Inc Conveying and treating system for loose, solid materials
US2817430A (en) * 1953-01-30 1957-12-24 Hapman Hannah Jane Tire-driven conveying apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527723A (en) * 1894-10-16 sarg-ent
US2533813A (en) * 1948-05-27 1950-12-12 Joseph M Jones Tobacco elevator
US2817430A (en) * 1953-01-30 1957-12-24 Hapman Hannah Jane Tire-driven conveying apparatus
US2795056A (en) * 1955-01-04 1957-06-11 Proctor And Schwartz Inc Conveying and treating system for loose, solid materials

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