초록 ▼

A mobile cleaning apparatus for removing dirt and debris from the surface of parking lots and the like characterized by the ability to quickly and efficiently remove debris from the surface to be cleaned and dump the collected debris into a remote upstanding trash bin. The mobile cleaning apparatus

A mobile cleaning apparatus for removing dirt and debris from the surface of parking lots and the like characterized by the ability to quickly and efficiently remove debris from the surface to be cleaned and dump the collected debris into a remote upstanding trash bin. The mobile cleaning apparatus includes a mobile vehicle chassis and a pickup head for gathering the debris comprising a pair of forwardly swept, diverging arms including an air pressure port adjacent each opposing free end thereof and a suction port at the juncture of the arms so that dirt and debris dislodged by the air pressure ports tends to move toward the rearwardly positioned suction port. The mobile cleaning apparatus further includes a collection hopper which is movably mounted on the vehicle chassis having a positively actuated door in the bottom thereof and means for raising the collection hopper to a predetermined rearwardly raised position so that the door may be opened and collected debris dumped into a trash bin. A pneumatic pressure duct extends from each pressure port of the pickup head to the collection hopper and a pneumatic vacuum duct extends from the vacuum port of the pickup head to the collection hopper. An air blower is positioned in the collection hopper and communicates with the upstream end of the pneumatic pressure duct and the downstream end of the pneumatic vacuum duct for creating a partially regenerated air current from the collection hopper to the pickup head and back to the collection hopper.

대표청구항 ▼

A mobile cleaning apparatus for pneumatically removing debris from the surface of parking lots and the like, comprising: a mobile vehicle chassis; a pickup head for collecting debis comprising outwardly extending and opposing arms having an air pressure port adjacent to the free end of each opposing

A mobile cleaning apparatus for pneumatically removing debris from the surface of parking lots and the like, comprising: a mobile vehicle chassis; a pickup head for collecting debis comprising outwardly extending and opposing arms having an air pressure port adjacent to the free end of each opposing arm for impinging air onto the surface to be cleaned and a vacuum port in said pickup head at the juncture of said opposing arms for removing dirt and debris from said pickup head, said pickup head being transversely carried by said vehicle chassis at a predetermined spaced relationship from the surface to be cleaned and with said opposing arms thereof being swept forwardly in the direction of forward travel of said vehicle chassis; a hydraulically actuated bell and crank for vertically adjusting said pickup head, said bell and crank being carried by said vehicle chassis and operatively connected to said pickup head for vertically adjusting said pickup head to a predetermined distance from the surface to be cleaned; collection hopper means movably mounted on said vehicle chassis and having a hydraulically actuated door in the bottom thereof; a bifurcated pneumatic pressure duct having a leg thereof extending to and communicating with said air pressure port in each opposing arm of said pickup head, said pressure duct extending from said pickup head to said collection hopper means with said legs thereof being joined at the end remote from said pickup head; a pneumatic vacuum duct connected to and communicating with said vacuum port of said pickup head, said vacuum duct extending from said pickup head to said collection hopper means; an inverted, conical filter screen having a hydraulically driven fan positioned therewithin disposed in said collection hopper means so as to pull an air current through said filter screen, said fan communicating with the upstream end of said pressure duct and with the downstream end of said vacuum duct through said screen for creating a partially regenerated air current through said pressure duct to said pickup head for entraining debris from the surface beneath said pickup head into the air current formed therein and a suction current through said vacuum duct from said pickup head for transporting the entrained debris to said collection hopper means; and means for raising said collection hopper means to a predetermined rearwardly raised position so that said bottom door may be opened and the debris collected within said collection hopper means dumped into a trash bin, said means for raising said collection hopper means including a pluality of parallel, rigid support legs of substantially equal length, each of said support legs being pivotally connected at one end thereof to said vehicle chassis and at the other end thereof to said collection hopper means, and a hydraulic ram lift means carried by said vehicle chassis and operatively connected to said collection hopper means.