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(11) | EP 0 180 251 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Improved debris system for street sweepers |
| (57) A street sweeper has floating support apparatus for supporting both a pick-up broom
and a pair of laterally and forwardly disposed gutter brushes beneath a sweeper framework
and for providing controlled broom and brush pressures on the surface being swept.
A ball bushing and vertical shaft provide gutter brush suspension and spherical bearings
and support arms provide pick-up room suspension. The gutter brushes and pick-up broom
are directly driven by hydraulic motors mounted on their respective suspension structures.
Debris is directed inwardly on the swept surface by the gutter brushes toward the
path of the pick-up broom. Laterally disposed dirt shoes lie adjacent the ends of
the pick-up broom to prevent debris from flowing around the ends of the broom, whereby
debris is further guided inwardly toward the pick-up broom for propulsion toward an
elevator for transfer into a framework mounted debris hopper. |