US3647096A - Material delivery system - Google Patents

Material delivery system Download PDF

Info

Publication number
US3647096A
US3647096A US852345A US3647096DA US3647096A US 3647096 A US3647096 A US 3647096A US 852345 A US852345 A US 852345A US 3647096D A US3647096D A US 3647096DA US 3647096 A US3647096 A US 3647096A
Authority
US
United States
Prior art keywords
hopper
conveyor means
conveyor
sidewalls
trailer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US852345A
Other languages
English (en)
Inventor
John H Holland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkansas Rock and Gravel Co
Original Assignee
Arkansas Rock and Gravel Co
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 Arkansas Rock and Gravel Co filed Critical Arkansas Rock and Gravel Co
Application granted granted Critical
Publication of US3647096A publication Critical patent/US3647096A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/36—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon
    • B60P1/38—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon forming the main load-transporting element or part thereof

Definitions

  • a delivery system for hot asphalt includes a plurality of semitrailers.
  • Each trailer includes a V-shaped hopper having an asphalt supporting beam extending longitudinally through it.
  • a tube extends around the hopper for use in spraying lubricating oil into the hopper prior to the loading of asphalt.
  • Each trailer further includes a conveyor for unloading asphalt from the hopper into a paving machine. The conveyor is driven by a hydraulic motor that is controlled by a valve.
  • valve is mounted in the trailer 'for activation by a prod mounted on the paving machine so that the operation of the conveyor is controlled from the paving machine.
  • Asphalt cannot be delivered to a paving machine from a dump truck except by raising the bed of the truck, When an overhead obstruction prevents the raising of the bed, other means for delivering asphalt to the paving machine must be found.
  • a very critical problem involving the use of large capacity dump trucks to transport results from the tendency of asphalt to flow from the rear or bottom of a dump bed first and to remain in the front or top of the bed as the bed is raised.
  • Most large capacity dump trucks have a relatively long dump bed.
  • the presence of asphalt in the front or top-of a long dump bed as the bed is raised results in a very marked tendency of the truck to tip over. This problem is so acute that large capacity dump trucks are seldom used to transport asphalt to paving sites having any appreciable slant or bank.
  • This invention comprises an improvement over the material delivery system disclosed in the above-identified application of Robert D. Plant.
  • the movement of asphalt out of the trailers is facilitated by spraying the trailers with lubricating oil before they are loaded with asphalt.
  • An asphalt supporting beam is positioned above and parallel to the conveyor of each trailer. The beam prevents excessive asphalt packing in the trailer without hindering the unloading of asphalt.
  • the improved version of the system is further characterized in that the operation of the conveyor of each trailer is controlled by a valve mounted on the trailer.
  • the valves are positioned on the trailers for actuation by prods mounted on the paving machines. This permits both control of the unloading of the trailers from the paving machines and the unloading of the trailers in situations where no prod is available.
  • this invention comprises a plurality of vehicles each for transporting material from a delivery device to a receiving device and each including an unloading mechanism for dispensing material to the receiving device.
  • Each vehicle includes an unloading mechanism control system that is mounted for actuation from the receiving device.
  • the unloading mechanism of each vehicle includes a conveyor and amaterial supporting beam that extends parallel to the conveyor.
  • FIG. '1 is a side view of a portion of a material delivery system employing the invention.
  • FIG. 2 is a back view of asemitrailer employed in the system shown in FIG. 1;
  • FIG. 3 is a top view of a trailer shown in FIG. 2 in which certain parts have been broken away;
  • FIG. 4 is a side view of the trailer shown in FIG. 2 in which certain parts have been broken away and certain other parts have been illustrated schematically;
  • FIG. 5 is partial perspective view illustrating the left rear of the trailer shown in FIG. 2; 1
  • FIG. 6 is a view similar to FIG. 5 illustrating the right rear of the trailer
  • FIG. 7 is a transverse sectional view of the trailer shown in FIG. 2;
  • FIG. '8 - is enlarged view similar to FIG. 1 which illustrates the operation ofthe system
  • FIG. 9 is a schematic illustration of hydraulic circuitry employed in the system.
  • the delivery system 10 includes a plurality of semitrailers 12 (only one of which is shown) each adapted for a connection to and transportation by a conventional tractor 14.
  • Each of the trailers 12 includes a hopper assembly 16 and an unloading assembly 18.
  • the trailers 12 of the system 10 receive hot asphalt from an asphalt-mixing mechanism located at an asphalt plant (not shown) and deliver the hot asphalt to a paving machine 20 located at a paving site.
  • the paving machine 20 supplied by the trailers 12 is conventional except that it is equipped with a prod 22 that is employed in controlling the unloading assemblies 18 of the trailers 12.
  • each trailer 12 The main structural elements of each trailer 12 are a pair of main beams 24 which extend the length of the trailer 12.
  • a plurality of support beams 26 extend upwardly and outwardly from each of the beams 24.
  • a top beam 28 extends along each side of the trailer 12 and is connected to the tops of the beams 26.
  • a pair of end beams 30 extend between the ends of the top beams 28 and two pairs of slanting beams 32 extend from the main beam 24 to the top beam 28 at the front and at the rear of the trailer 12.
  • each trailer 12 The main beams 24 of each trailer 12 are supported on a pair of conventional wheel and axle assemblies 34.
  • a pair of fenders 36 extend outwardly from the main beams 24 over the wheels of the wheel and axle assemblies 34.
  • a gooseneck assembly 38 including a conventional fifth wheel 40 is provided at the front end of each trailer 12.
  • a pair of conventional support jacks 42 extend downwardly from the main beam 24 for supporting the trailer 12 whenever it is not connected to a tractor 14.
  • Each hopper assembly 16 includes a floor 44 which is supported below the main beams 24 of the trailer 12 by a pair of sub-frame assemblies 46.
  • a pair of sidewalls 48 slope upwardly and outwardly with respect to the floor 44 and are supported on the main beams 24 and the top beams 28.
  • the walls 48 each extend at an angle of approximately 60 with respect to the floor 44.
  • Each hopper 16 further includes a sloping front wall 52 extending between the main beams 24 and the end beam 30 at the front of the trailer 12.
  • the front wall 52 is reinforced by a plate 54 which extends vertically between the main beams 24 and the end beam 30 and a plate 56 which extends horizontally between the main beams 24.
  • a rubber sealing member 58 extends from the front wall 52 to the floor 44.
  • An asphalt supporting beam 60 extends along the axial center of the trailer 12.
  • the beam 60 is triangular in shape and extends the entire length of the hopper 16.
  • the front end of the beam 60 is supported by a pair of triangularly shaped plates 62 that are flxed to the front wall 52 and to the beam 60.
  • the rear end of the beam 60 is supported by a pair of plates 64 that are fixed to the end beam 30 at the rear of the trailer 12 and to the beam 60.
  • the center of the beam 60 is supported by a pair of support assemblies 66.
  • each assembly 66 includes a'beam 68 that extends between the top beams 28 of the trailer and a pair of flat bars 70 which extend angularly downwardly from the beam 68 t the beam 60.
  • the hopper assembly illustrated in the drawings can be employed in many applications other than asphalt delivery trailers.
  • the hopper can be used in stationary applications such as coal bins, etc.
  • the hopper can be employed as a part of various material delivery vehicles which need not be of the trailer variety.
  • Each trailer 12 of the delivery system is provided with a system for lubricating the sidewalls 48 and the front wall 52 of the hopper 16 before asphalt is loaded into the hopper.
  • the lubricating system includes a tank 76 that is supported by a plate 78 which extends through the gooseneck assembly 38 parallel to the plate 56.
  • a filler tube 80 extends from the tank 76 through a plate 82 that is mounted between the slanting beams 32 at the front of the trailer 12.
  • the filler tube 80 is provided with a removable cap 84.
  • the cap 84 includes'an air valve of the type commonly employed in automobile tires. in use, the cap 84 is removed and a suitable lubricating fluid is pumped into the tank 76. The cap 84 is then replaced and compressed air is directed through the air valve in the cap to pressurize the interior of the tank 76.
  • a tube 86 extends from the tank 76 to a valve 88 having a control handle that extends through the plate 82.
  • the outlet of the valve 88 is connected to a square tube 90 that extends around the sidewalls 48 and the front walls 52 of the trailer 12.
  • the tube 90 has holes formed through it at spaced points along its bottom side. Therefore, whenever the valve 88 is opened, lubricating fluid from the tank 76 is sprayed on to the sidewalls 48 and the front wall 52 through the holes in the tube 90.
  • any lubricating fluid can be employed in the lubricating system. It has been found that diesel fuel works very well as a hopper lubricant. Since this material is readily available and very inexpensive, its use is preferred.
  • each unloading assembly 18 comprises a conveyor 94 which passes through the hopper 16 and out the rear end of the trailer 12.
  • the conveyor 94 comprises a plurality of evenly spaced bars 96 and a pair of chains 100 connected to the opposite ends of the bars 96.
  • the chains 100 move the bars 96 through the hopper 16 from front to rear along a course extending just over the floor 44. From the hopper 16, the bars 96 pass under a gate 102 that is hingedly supported at the rear of the trailer 12 and around a large diameter roller 104. From the roller 104, the chains 100 drive the bars 96 along a course extending under the hopper l6 and then under the sealing member 58 and into the front .end of the hopper 16.
  • the chains 100 each extend between a sprocket 106 positioned at the front of the trailer 12 and a sprocket 108 positioned at the rear of the trailer 12.
  • the chains 100 are protected by a pair of channels 110 formed between the lower ends of the walls 48 and the floor 44 as they travel through the hopper 16.
  • the chains 100 pass under the hopper 16 on their return course, they are protected by a pair of flanges 112 extending from the subframes 46.
  • the bars 96 of the conveyor 94 are purposely exposed during their travel along the return course so that any material from the hopper 16 which accumulates on or between the bars 96 during their travel through the hopper 16 is free to fall away from the bars 96 before they reenter the hopper l6.
  • a hydraulic motor is attached to a plate 122 which is mounted in an extension 124 of the left side main beam 24 of the trailer 12.
  • the motor 120 drives a sprocket 126 which in turn drives a chain 128.
  • the chain 128 drives a sprocket 130 that comprises the input of a speed reducer 132.
  • the speed reducer 132' drives a jack shaft 134 that extends through the rear of the trailer to a sprocket 136 that is positioned in an extension 138 of the right side main beam 24.
  • the sprocket 136 drives a chain 140 which in turn drives a sprocket 142 that comprises the input of a shaft-mounted speed reducer 144.
  • the speed reducer 144 is mounted on a shaft 146 that extends across the back of the trailer 12.
  • the shaft 146 supports and drives the sprockets 108 which in turn drive the chains 100.
  • the motor rotates the shaft 146 through the speed reducer 132, the jack shaft 134 and the speed reducer 144.
  • the shaft 146 in turn rotates the sprockets 108 which drive the conveyor 94.
  • the hydraulic motor 120 is operated by a hydraulic system 150 that is entirely contained within the trailer 12.
  • the system 150 includes a control valve 152 which is secured to the bottom frame of the trailer.
  • the valve 152 includes a rearwardly extending actuator that is coupled to a valve control pad 156 by a link 158.
  • the pad 156 is pivotally supported on a shaft 160 that extends between the main beams 24 of the trailer 12.
  • the valve 152 is so arranged that it is closed when the pad 156 is in the position shown and is open when the pad 156 is pivoted toward the valve 152.
  • the hydraulic system 150 of the trailer 12 further includes a pump 162 which forces hydraulic fluid from a tank 164 to the motor 120.
  • a relief valve 166 and a pressure-compensated flow control unit 168 are also included in the system 150.
  • the pump 162 supplies hydraulic fluid to the motor 120 at a rate controlled by the flow control unit 188.
  • the control valve control pad arrangement of the system has utility in systems other than conveyor motor control systems.
  • such an arrangement could be used to control the brakes of delivery vehicles including dump trucks, and to thereby prevent separation of the vehicles and a paving machine or other receiving device,
  • operation of the control valve controls the flow of energizing fluid to the brakes of the vehicles.
  • the pad 156 of the trailer 12 is mounted for actuation by the prod 22 of the paving machine 20.
  • the prod 22 is supported in the asphalt-receiving portion of the paving machine by a pair of upwardly extending brackets 172.
  • the prod 22 includes an outer cylinder 174 that is secured to the brackets 172 and a stinger 176 that is slidably supported in the outer cylinder 174.
  • the stinger 176 is hollow and has a spring 178 positioned within it.
  • a piston. 180 extends into engagement with the spring 178 inside the stinger 176.
  • the piston 180 of the stinger is connected to a piston 182 which comprises a portion of a hydraulic cylinder 184. Whenever hydraulic fluid is directed into the blind end of the cylinder 184, the piston 182 of the cylinder is driven toward the front of the paving machine 20. The piston 182 forces the piston 180 toward the front of the paving machine which in turn operates through the spring 178 to drive the stinger 170 our of the outer cylinder 174 of the prod 22.
  • the cylinder 184 of the prod 22 is operated by a hydraulic control system 186 mounted on the paving machine 20.
  • the system 186 includes a pump 188 which draws a hydraulic fluid from a tank 190.
  • the pump sup plies fluid to a control valve 192 which controls the flow of fluid to and from the rod and blind ends of the cylinder 184.
  • the stinger 176 of the prod 22 can be either extended, withdrawn or maintained in any desired position.
  • the stinger 176 of the prod 22 When the stinger 176 of the prod 22 is withdrawn, its distal end is positioned about 1 inch from the valve control pads 156 of trailers 12 that are backed into engagement with the paving machine 20.
  • the valve 192 of the hydraulic system 186 is actuated to extend the stinger 176 of the prod 22.
  • the stinger 176 As the stinger 176 moves out of the cylinder 174, it pivots the pad 156 of the trailer toward the valve 152. This action opens the valve 152 to permit hydraulic fluid to flow to the motor 120.
  • the motor 120 thereupon drives the loading assembly 18 of the trailer 12 to unload asphalt from the trailer into the paving machine.
  • the cylinder 184 and the spring 178 are designed to apply a contact pressure of about 200 pounds between the stinger 176 of the prod 22 and the pad 156 of the trailer 12. This prevents accidental closings of the valve 152 during an unloading operation.
  • a lever 194 is secured to a shaft 196.
  • the shaft 196 is pivotally supported in a tube 198 that is secured to the extension 124 of the left main beam 24 of the trailer 12.
  • the shaft 196 extends to a cam 200 positioned for engagement with the pad 156 of the trailer.
  • the lever may also be employed to control the unloading of a trailer 12 into a paving machine that is not equipped into a prod 22.
  • the unloading of the trailer can be controlled from any paving machine.
  • the hydraulically actuated prod 22 illustrated in FIGS. 8 and 9 is exemplatory only and that many other structures may be employed to operate the valve control pads 156 of the trailers 12 and to thereby control and unloading of the trailers 12 from the lay down machine.
  • the paving machine can be equipped with a fixed rod having a first spring-loaded tip.
  • an electrical system including a motor and lead screw arrangement can be employed.
  • a mechanical pad pivoting structure comprising a pad-engaging rod and a suitable lever system for advancing and retracting the rod can be employed. All that is required is to equip the paving machine with some mechanism for pivoting the pad 156 when a trailer 12 is properly positioned relative to the paving machine.
  • the material delivery system 10 transports hot asphalt from an asphalt-mixing mechanism located at an asphalt plant to a paving machine 20 located at a paving site in one or more semitrailers 12.
  • the hopper 16 of each trailer 12 is lubricated prior to receiving asphalt from the asphalt-mixing mechanism. This is accomplished by removing. the cap 84 from the filler tube and then pumping diesel oil into the tank 76. When the tank is full, the cap 84 is replaced and the tank 76 is pressurized with compressed air. The valve 88 is then opened to permit diesel oil from the tank 76 to flow through the tube 90 and onto the sidewalls 48 and the front wall 50 of the hopper 16.
  • the operator of the paving machine manipulates the control valve 192 of the hydraulic control system 186 on the paving machine to direct hydraulic fluid from the pump 188 to the blind end of the hydraulic cylinder 184. This action drives the stinger 176 out of the cylinder 174 of the prod 22. The stinger 176 pivots the valve control pad 156 on the trailer 12 to open the valve 152 of the hydraulic control system 150 of the trailer.
  • the hydraulic system 150 supplies hydraulic fluid to the motor 120.
  • the motor in turn operates the conveyor 94 of the trailer 12 to unload asphalt from the hopper 16 into the paving machine 20.
  • the control pad 156 is pivoted to open the valve 152 as the trailer 12 is backed into engagement with the paving machine 20. In either case, should a separation between the trailer 12 and the paving machine 20 occur, disengagement of the prod on the paving machine from the pad 156 allows the pad to return to its normal position, whereupon the valve 152 of the trailer is closed.
  • the operation of the unloading assembly 18 of the trailer 12 is facilitated by the beam'60 of the hopper 16.
  • the beam 60 supports the contents of the-hopper 16 and thereby lessens the load on the conveyor 94.
  • the amount of support provided depends upon the tendency of the material in the hopper 16 to bridge" between the beam 60 and the walls 48. Asphalt exhibits a very marked tendency to bridge and, accordingly, the beam 60 greatly reduces the amount of power required to unload asphalt from the trailer 12.
  • the amount of asphalt unloaded by the trailer is directly'related to the height of the asphalt supporting beam 60 relative to the floor 44.
  • the conveyor 94 is operated at a uniform speed and the beam 60 is raised relative to the floor 44, more asphalt is unloaded.
  • the beam is loweredrelative to the floor'44, less asphalt is unloaded.
  • the'rate at which asphalt is unloaded from the trailer may be controlled in two ways.
  • the flow control unit 168 of the hydraulic system of the trailer adjusted to control the rate of flow of hydraulic fluid to themotor 120. This controls the speed of operation of the conveyor 94.
  • the height of the beam 60 relative to the floor 44 may be adjusted. This controls the amount of asphalt that is unloaded by the conveyor during each incremental unit of conveyor travel.
  • the height of the beam 60 relative to the floor 44 also directly effects the mount of power required to unload asphalt from the trailer.
  • the beam 60 is substantially narrower than the conveyor system 94. This leaves at least two significant vertical columns of material which would appear to rest directly upon the conveyor.
  • the bridging effects observed in the material are undoubtedly produced by horizontal pressures established in the vertical columns of material by the beam 60. These horizontal pressures are produced by the reduction in the cross section of the hopper caused by the beam, and are enhanced by the sloping surfaces of the beam 60 which face the sloping sidewalls 48 of the hopper. The compaction resulting from road vibrations enhances these pressures.
  • the increased cross-sectional width of the hopper undoubtedly produces a layer of material having substantially lower horizontal pressures which prevent significant bridging. This apparently results in a horizontal, preferential shear zone in the vicinity of the beam 60 which permits the conveyor to more easily shear the material along a substantial length of the hopper. Since the hopper has no rear wall, material is freely delivered at a height corresponding to the height of the baffle 60 throughout the delivery period. Thus, the rate of delivery is almost entirely related to the speed of the conveyor from the start of the delivery of the material until all material has been delivered.
  • the operator of the paving machine manipulates the control valve 190 of the hydraulic control system 186 on the paving machine 20 to withdraw the stinger 176 of the prod 22 into the cylinder 174.
  • this function is accomplished by simply driving the unloaded trailer away from the paving machine. In either case, the unloaded trailer is then returned to the asphalt plant by the tractor l4, whereupon it is relubricated and filled with another, second load of asphalt.
  • the trailers system 10 can be employed to deliver many materials in addition to hot asphalt.
  • the trailers 12 may be used to deliver sand and/or gravel to paving sites for use in forming a pavement base. In such a case, it normally is not necessary to lubricate the hoppers 16 of the trailers 12.
  • the trailers may be employed to transport raw aggregrate to an asphalt plant on return trips from the paving site. In such a case, the trailers produce on both legs of the trip.
  • the trailers may be used to transport and unload materials entirely unrelated to the paving industry.
  • the unloading system illustrated in the drawings is superior to prior delivery systems in several respects.
  • the use of the system does not involve the raising ofa dump bed. Therefore, the trailers of the system do not tend to overturn, even when they are unloaded on a steep bank or grade. Further asphalt is unloaded by the system smoothly and evenly without tending to form into clumps that fall suddenly into a paving machine.
  • a very important advantage inherent in the present material delivery system involved the controlling of the unloading assemblies of the system from the paving machine. This assures the immediate termination of the delivery of asphalt upon any separation between the trailers of the system and the paving machine. Thus, the problem of removing asphalt accidentally 12 of the delivery dumped in front of a paving machine which has plagued prior delivery systems is completely eliminated.
  • Yet another advantage of the material delivery system disclosed herein results from the positioning of the hydraulic systems that drive the unloading assemblies on the trailers for control from the paving machine. This permits unloading of the trailers other than into a paving machine. It also allows the trailers to be unloaded into the paving machines not equipped with prods.
  • the system for delivering a batch of particulate material at a controllable rate which comprises elongated conveyor means adapted to tend to move all particulate material resting thereon along a linear path,
  • hopper means disposed above the conveyor means having a substantially uniform cross-sectional configuration for the length of that portion of the conveyor means above which the body of material is to be disposed,
  • the cross-sectional configuration being characterized by at least one passageway exposing a substantial portion of the conveyor means to a vertical column of the particulate material, the passageway being defined by a pair of opposed surfaces having downwardly converging sections followed by diverging sections for creating a zone of increased horizontal pressures in the particulate material between the converging sections tending to cause the particulate material to bridge across the passageway between the converging sections and for creating a horizontal zone of substantially lower horizontal pressures between the diverging sections and below the material tending to bridge for preventing bridging and providing a preferential shear zone in the material,
  • the hopper means having a delivery end open at least to the height of the upper portion of the horizontal zone of reduced pressures whereby a body of particulate material disposed in the hopper means will tend to shear along said horizontal zone and be delivered by the conveyor means substantially at the height of the upper portion of the horizontal zone such that the rate of delivery is determined by the speed of the conveyor means.
  • cross-sectional configuration of the hopper means is formed by a pair of downwardly converging sidewalls terminating near the edges of the conveyor means, and a member disposed above and extending parallel to the conveyor means having surfaces facing the sidewalls which have sections downwardly converging and then sections downwardly diverging with the sidewalls, the width of the member being substantially less than the width of the conveyor means.
  • the cross-sectional configuration of the hopper means is formed by a pair of sidewalls extending upwardly and outwardly from the edges of the conveyor means at angles of about 60 to a horizontal plane, a beam disposed above the conveyor means a distance equal to at least about one-half the width of the conveyor means exposed by the sidewalls, the beam having opposite downwardly diverging surfaces and a maximum transverse width less than about one-half the width of the conveyor means exposed by the sidewalls.
  • the system of claim 1 further characterized by means for varying the speed of the conveyor means as the material is being delivered to control the rate at which the material is delivered.
  • the system for delivering a batch of particulate material at a controlled rate which comprises:
  • conveyor means for transporting particulate material from a receiving zone to a delivery end spaced from the receiving zone
  • hopper means disposed above the receiving zone of the conveyor means having a pair of sidewalls disposed along the sides of the conveyor means and an end wall disposed across the end of the conveyor means remote from the delivery end,
  • the hopper means having baffle means extending through the receiving zone parallel to and spaced above the conveyor means,
  • baffle means leaving a substantial portion of the conveyormeans exposed vertically to the material above the baffle means
  • the baffle means having surfaces for establishing increased horizontal pressures in a horizontal zone tending to cause bridging of the material in the zones,
  • the hopper means having an open delivery end to at least the height of the horizontal zone whereby the particulate material will tend to shearlongitudinally along the length of the receiving zone in said horizontal zone as a result of the bridging tendencies of the material and will be delivered from the receiving zone to the delivery end at a volumetric rate determined by the cross-sectional area of the hopper means below the horizontal zone and the speed of the conveyor means.
  • baffle means comprises a beam having a pair of opposite downwardly diverging surfaces
  • the sidewalls slope downwardly and inwardly.
  • hopper means formed by the chassis means between the support wheels and the means for connecting the semitrailer to a tractor having an open top located such that the weight of material placed in the hopper through the open top will be distributed between the support wheels and the rear wheels of a tractor to which the semitrailer is connected,
  • conveyor means forming the bottom of the hopper means, the conveyor means extending the length of the hopper means and continuing to a point to the rear of the support wheels for delivering material in the hopper to the rear of the support wheels,
  • the hopper having sidewalls extending parallel to the conveyor means to a point to the rear of the support wheels, baffle means extending through the hopper means parallel to the conveyor means, the baffle means being disposed a substantial distance above the conveyor means and having a maximum width substantially less than the width of the conveyor means between the sidewalls,
  • the hopper having a delivery 'end that is open at least to about the top of the baffle means for freely passing material delivered from the hopper by the conveyor means without establishing a shear plane in the material
  • particulate material in the hopper will tend to bridge betweenthe baffle means and the side walls and will be delivered from the hopper to the rear of the support wheels at a height corresponding to the height of the baffle means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Loading Or Unloading Of Vehicles (AREA)
US852345A 1969-08-22 1969-08-22 Material delivery system Expired - Lifetime US3647096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85234569A 1969-08-22 1969-08-22

Publications (1)

Publication Number Publication Date
US3647096A true US3647096A (en) 1972-03-07

Family

ID=25313086

Family Applications (1)

Application Number Title Priority Date Filing Date
US852345A Expired - Lifetime US3647096A (en) 1969-08-22 1969-08-22 Material delivery system

Country Status (5)

Country Link
US (1) US3647096A (xx)
CA (1) CA933492A (xx)
DE (1) DE2040885A1 (xx)
FR (1) FR2059628B1 (xx)
GB (2) GB1324657A (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005790A (en) * 1969-08-22 1977-02-01 Arkansas Rock And Gravel Co. Paving material conveyor system
US4073152A (en) * 1974-05-25 1978-02-14 Kabushiki Kaisha Komatsu Seisakusho System for laying a subterranean water impervious asphalt layer
US4630988A (en) * 1984-07-11 1986-12-23 Hydrotile Machinery Company Bulk material hopper
US4900185A (en) * 1989-02-10 1990-02-13 Foertsch Gary L Asphalt spreader
US4923355A (en) * 1987-08-04 1990-05-08 ITI/CLM Impianti Tecnici Industriali Danieli & C. Officine Meccaniche SpA System to feed and discharge materials continuously in operations to rehabilitate railway road beds and the like
US5004394A (en) * 1989-12-08 1991-04-02 Cedarapids, Inc. Vehicle positioning methods and apparatus with impact damper
US5100277A (en) * 1989-12-08 1992-03-31 Cedarapids, Inc. Method of and apparatus for transferring materials
US5102285A (en) * 1988-11-21 1992-04-07 J. D. Enterprises, Inc. Trailer with continuous conveyer bed
US5125764A (en) * 1990-11-29 1992-06-30 Veath Sr Clemons A Vehicle for applying and spreading surface coating material to roadway surfaces
US5197848A (en) * 1989-12-08 1993-03-30 Cedarapids, Inc. Methods of and apparatus for transferring materials
US6394735B2 (en) 1999-02-23 2002-05-28 Henderson Manufacturing Co. Combination dump and spreader apparatus
US6513447B1 (en) 2001-01-16 2003-02-04 Richard Guzman Method and apparatus for distributing soil amendments
US20070231069A1 (en) * 2006-03-24 2007-10-04 Joseph Voegele Ag Paving convoy
CN117755183A (zh) * 2024-02-21 2024-03-26 新乡市亿龙养护设备有限公司 一种道路铺设沥青输送装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA728338B (en) * 1971-12-16 1973-07-25 Arkansas Rock & Gravel Co Particulate material delivery trailer
FR2414419A1 (fr) * 1978-01-13 1979-08-10 Bennes Marrel Systeme de regulation du debit des materiaux decharges par un vehicule semi-remorque a fond mouvant
FR2467106A1 (fr) * 1979-10-08 1981-04-17 Thevenon Ets Caisses d'engins, notamment de camions, a fond mobile
DE202012104724U1 (de) 2012-12-05 2013-01-28 Josef Fliegl jun. Abschiebewagen zum Transport von heißem Gut

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805784A (en) * 1956-09-04 1957-09-10 Noel O Dokken Wagon box construction with selfunloading means
GB1024364A (en) * 1963-07-19 1966-03-30 Atkinsons Clitheroe Ltd Improvements in or relating to vehicles for carrying material in bulk
US3254920A (en) * 1964-06-12 1966-06-07 Caterpillar Tractor Co Door operating means for bottom dump wagons
US3482717A (en) * 1967-10-05 1969-12-09 Cci Marguardt Corp Self-unloading trailer
US3490623A (en) * 1968-01-09 1970-01-20 Braco Inc Wagon box unloading apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783901A (en) * 1954-10-07 1957-03-05 Int Harvester Co Self-unloading vehicle
US2790565A (en) * 1954-10-07 1957-04-30 Int Harvester Co Self unloading vehicle
FR1485280A (fr) * 1964-04-17 1967-06-16 Joy Mfg Co Appareil pour recevoir, stocker et décharger des matériaux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805784A (en) * 1956-09-04 1957-09-10 Noel O Dokken Wagon box construction with selfunloading means
GB1024364A (en) * 1963-07-19 1966-03-30 Atkinsons Clitheroe Ltd Improvements in or relating to vehicles for carrying material in bulk
US3254920A (en) * 1964-06-12 1966-06-07 Caterpillar Tractor Co Door operating means for bottom dump wagons
US3482717A (en) * 1967-10-05 1969-12-09 Cci Marguardt Corp Self-unloading trailer
US3490623A (en) * 1968-01-09 1970-01-20 Braco Inc Wagon box unloading apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005790A (en) * 1969-08-22 1977-02-01 Arkansas Rock And Gravel Co. Paving material conveyor system
US4073152A (en) * 1974-05-25 1978-02-14 Kabushiki Kaisha Komatsu Seisakusho System for laying a subterranean water impervious asphalt layer
US4630988A (en) * 1984-07-11 1986-12-23 Hydrotile Machinery Company Bulk material hopper
US4923355A (en) * 1987-08-04 1990-05-08 ITI/CLM Impianti Tecnici Industriali Danieli & C. Officine Meccaniche SpA System to feed and discharge materials continuously in operations to rehabilitate railway road beds and the like
US5102285A (en) * 1988-11-21 1992-04-07 J. D. Enterprises, Inc. Trailer with continuous conveyer bed
US4900185A (en) * 1989-02-10 1990-02-13 Foertsch Gary L Asphalt spreader
US5286138A (en) * 1989-12-08 1994-02-15 Cedarapids, Inc. Vehicle positioning methods and apparatus with impact damper
US5004394A (en) * 1989-12-08 1991-04-02 Cedarapids, Inc. Vehicle positioning methods and apparatus with impact damper
US5100277A (en) * 1989-12-08 1992-03-31 Cedarapids, Inc. Method of and apparatus for transferring materials
US5197848A (en) * 1989-12-08 1993-03-30 Cedarapids, Inc. Methods of and apparatus for transferring materials
US5125764A (en) * 1990-11-29 1992-06-30 Veath Sr Clemons A Vehicle for applying and spreading surface coating material to roadway surfaces
US6394735B2 (en) 1999-02-23 2002-05-28 Henderson Manufacturing Co. Combination dump and spreader apparatus
US6513447B1 (en) 2001-01-16 2003-02-04 Richard Guzman Method and apparatus for distributing soil amendments
US20070231069A1 (en) * 2006-03-24 2007-10-04 Joseph Voegele Ag Paving convoy
US7572081B2 (en) * 2006-03-24 2009-08-11 Joseph Voegele Ag Paving convoy
CN117755183A (zh) * 2024-02-21 2024-03-26 新乡市亿龙养护设备有限公司 一种道路铺设沥青输送装置
CN117755183B (zh) * 2024-02-21 2024-04-30 新乡市亿龙养护设备有限公司 一种道路铺设沥青输送装置

Also Published As

Publication number Publication date
GB1324658A (en) 1973-07-25
GB1324657A (en) 1973-07-25
FR2059628B1 (xx) 1974-09-20
CA933492A (en) 1973-09-11
DE2040885A1 (de) 1971-03-11
FR2059628A1 (xx) 1971-06-04

Similar Documents

Publication Publication Date Title
US3647096A (en) Material delivery system
US6360876B1 (en) Portable telescoping radial stacking conveyor
US4529349A (en) Roll-off hoist
US4068769A (en) Cargo box
US2900094A (en) Ramp device
US4494798A (en) Side-dumping, material-hauling conveyance
US9428094B2 (en) Transport apparatus for elongate objects
US3956901A (en) Sewer laying system
US4801218A (en) Three-point suspension for bituminous pavers
US3498482A (en) Truck-body unloading apparatus
US4005790A (en) Paving material conveyor system
US8079646B2 (en) Vehicle or trailer
US4243353A (en) Cotton module transport apparatus
US2173277A (en) Trailer
US4327945A (en) High lift, side dumping vehicle
US3442404A (en) Method and apparatus for disposal of waste employing rail and off-road equipment
US3361477A (en) Vehicle with tandem dump bodies, dumpable by a single dumping mechanism
US3608446A (en) Material delivery system
US3136566A (en) Tractor semitrailer load distributor device
US5265940A (en) Flexible bowl tip truck
US3574332A (en) Trailer lifting and dumping apparatus
US3336080A (en) Vehicular dumping mechanism
US3198579A (en) Tractor trailer dumping hopper vehicle
US4171927A (en) Loading and transport vehicle
US3724692A (en) Material delivery system