ROADWAY VACUUM SWEEPER WITH SLURRY DISPOSAL
First Claim
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1. A roadway cleaning apparatus in combination with a prime mover comprising a vehicle chassis having an engine control means thereon including a control cab and having a hydraulic fluid pump, the improvement comprising:
- conveyor means transversely connected to the forward end of said chassis, said conveyor means including a substantially cylindrical housing disposed horizontally adjacent the surface of the earth, said housing having closed ends and having a coextensive downwardly and forwardly directed opening, said housing having a rearward and upwardly directed discharge opening medially its ends, a pair of cooperating coaxially aligned screw conveyors extending between and journalled by said housing ends, and impeller blades interpOsed between and connected, respectively, with adjacent ends of said screw conveyors medially the ends of said housing, the length of each said impeller blade being equal with the radius of said screw conveyors, said screw conveyors being characterized by a helical edge portion, arcuately curved toward the direction of rotation, and generating a cylindrical surface coinciding with a circular plane generated by the outwardly directed limit of said thrower blades as the conveyors are rotated about their axis, said curved helical edge portions and said impeller blades having a series of spaced-apart slots transversely formed therein adjacent their outer edge;
a plurality of rush segments each having a rectangular base portion and bristles secured thereto;
means extending through the slots and securing said brush segments, in base end to end abutting relation to the respective said screw conveyor and impeller blade outer edge portions;
drive means including a hydraulic motor for rotating said screw conveyors;
a rectangular fluid containing closed tank having a material receiving opening in its top wall and having inner and outer spaced-apart walls having heat and cold insulation therebetween mounted on said vehicle chassis rearwardly of and projecting above the horizontal plane defining the upper limit of said control cab;
a pair of shafts transversely journalled in coaxial aligned relation by the forward end portion of said chassis;
a pair of arms pivotally connected at one end portion, respectively, to the respective outwardly disposed end portion of the respective said shaft, the other end portion of said arms being pivotally connected, respectively, with opposing end portions of said housing;
a pair of braces projecting forwardly of said tank in laterally spaced relation above said housing;
a pair of pressure operated cylinders extending between and connected, respectively, with the forward end portion of said braces and opposing end portions of said housing for vertical pivoting movement of said housing about the horizontal axis of said shafts;
a discharge tube connected, at one end, with said housing around its discharge opening and extending rearwardly and upward, at its other end, and connected with said tank top wall around the receiving opening;
a heater mounted on said chassis;
piping connected with said heater and extending, intermediate its ends into said tank and being helically wound, adjacent the inner periphery of said tank;
a vacuum pump operatively mounted on said vehicle chassis;
a first elongated downwardly open suction nozzle coextensive with and rearwardly secured horizontally to said housing;
a first flexible skirt secured in depending relation to the depending limit of said nozzle; and
, a first flexible tubing connecting said vacuum pump with said suction nozzle and said tank, respectively.
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Accused Products
Abstract
A fluid containing insulated reservoir or tank is mounted on a vehicle chassis having an engine thereon, a hydraulic pressure means and a control cab. A roadway cleaning apparatus, comprising a forwardly open horizontally disposed substantially cylindrical screw conveyor surrounding housing, is pivotally mounted transversely of the forward end portion of the vehicle chassis for vertical pivoting movement about a horizontal axis. A discharge tube connects the central portion of the conveyor housing to the tank. Vacuum means cooperates with the screw conveyor and discharges dust, dirt and the like into the tank. Heat transfer means supported by the chassis extends into the tank for heating the contents to form a slurry. An agitator within the tank enhances the slurry forming action.
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Citations
3 Claims
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1. A roadway cleaning apparatus in combination with a prime mover comprising a vehicle chassis having an engine control means thereon including a control cab and having a hydraulic fluid pump, the improvement comprising:
- conveyor means transversely connected to the forward end of said chassis, said conveyor means including a substantially cylindrical housing disposed horizontally adjacent the surface of the earth, said housing having closed ends and having a coextensive downwardly and forwardly directed opening, said housing having a rearward and upwardly directed discharge opening medially its ends, a pair of cooperating coaxially aligned screw conveyors extending between and journalled by said housing ends, and impeller blades interpOsed between and connected, respectively, with adjacent ends of said screw conveyors medially the ends of said housing, the length of each said impeller blade being equal with the radius of said screw conveyors, said screw conveyors being characterized by a helical edge portion, arcuately curved toward the direction of rotation, and generating a cylindrical surface coinciding with a circular plane generated by the outwardly directed limit of said thrower blades as the conveyors are rotated about their axis, said curved helical edge portions and said impeller blades having a series of spaced-apart slots transversely formed therein adjacent their outer edge;
a plurality of rush segments each having a rectangular base portion and bristles secured thereto;
means extending through the slots and securing said brush segments, in base end to end abutting relation to the respective said screw conveyor and impeller blade outer edge portions;
drive means including a hydraulic motor for rotating said screw conveyors;
a rectangular fluid containing closed tank having a material receiving opening in its top wall and having inner and outer spaced-apart walls having heat and cold insulation therebetween mounted on said vehicle chassis rearwardly of and projecting above the horizontal plane defining the upper limit of said control cab;
a pair of shafts transversely journalled in coaxial aligned relation by the forward end portion of said chassis;
a pair of arms pivotally connected at one end portion, respectively, to the respective outwardly disposed end portion of the respective said shaft, the other end portion of said arms being pivotally connected, respectively, with opposing end portions of said housing;
a pair of braces projecting forwardly of said tank in laterally spaced relation above said housing;
a pair of pressure operated cylinders extending between and connected, respectively, with the forward end portion of said braces and opposing end portions of said housing for vertical pivoting movement of said housing about the horizontal axis of said shafts;
a discharge tube connected, at one end, with said housing around its discharge opening and extending rearwardly and upward, at its other end, and connected with said tank top wall around the receiving opening;
a heater mounted on said chassis;
piping connected with said heater and extending, intermediate its ends into said tank and being helically wound, adjacent the inner periphery of said tank;
a vacuum pump operatively mounted on said vehicle chassis;
a first elongated downwardly open suction nozzle coextensive with and rearwardly secured horizontally to said housing;
a first flexible skirt secured in depending relation to the depending limit of said nozzle; and
, a first flexible tubing connecting said vacuum pump with said suction nozzle and said tank, respectively.
- conveyor means transversely connected to the forward end of said chassis, said conveyor means including a substantially cylindrical housing disposed horizontally adjacent the surface of the earth, said housing having closed ends and having a coextensive downwardly and forwardly directed opening, said housing having a rearward and upwardly directed discharge opening medially its ends, a pair of cooperating coaxially aligned screw conveyors extending between and journalled by said housing ends, and impeller blades interpOsed between and connected, respectively, with adjacent ends of said screw conveyors medially the ends of said housing, the length of each said impeller blade being equal with the radius of said screw conveyors, said screw conveyors being characterized by a helical edge portion, arcuately curved toward the direction of rotation, and generating a cylindrical surface coinciding with a circular plane generated by the outwardly directed limit of said thrower blades as the conveyors are rotated about their axis, said curved helical edge portions and said impeller blades having a series of spaced-apart slots transversely formed therein adjacent their outer edge;
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2. The apparatus according to claim 1 and further including:
- a pair of earth surface engaging sweep screw conveyors respectively connected at one end to the forward limit of the respective end portion of said housing in cooperating laterally extending horizontally aligned relation;
a cylindrical jacket substantially surrounding said respective sweep screw conveyor;
hydraulic motor means mounted on each said cylindrical jacket and drivably connected with one end portion of the respective said sweep screw conveyor;
brace means extending between and connected with said chassis and the respective hydraulic motor means on each said cylindrical jacket for horizontally supporting the latter;
a second elongated downwardly open suction nozzle coextensive with and rearwardly secured horizontally to each said cylindrical jacket;
a second flexible skirt secured in depending relation to the depending limit of each said second nozzle; and
second flexible tubing connecting said vacuum pump with said second suction nozzles.
- a pair of earth surface engaging sweep screw conveyors respectively connected at one end to the forward limit of the respective end portion of said housing in cooperating laterally extending horizontally aligned relation;
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3. The apparatus according to claim 2 in which said tank is provided with a vent opening in its top wall and further including:
- a vent pipe extending into said tank through the vent opening;
an air flow filter element within said vent pipe; and
a vent cover secured to said vent pipe.
- a vent pipe extending into said tank through the vent opening;
Specification
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Current AssigneeEli G. Krickovich
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Original AssigneeEli G. Krickovich
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InventorsKrickovich, Eli G.
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Primary Examiner(s)Hornsby, Harvey C.
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Assistant Examiner(s)Moore, C. K.
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Application NumberUS05/402,630Time in Patent Office473 DaysField of Search15/82,83,84,85,86,340,414,347US Class Current15/340.4CPC Class CodesE01H 1/0845 with mechanical loosening o...
