Floor washing-drying machine
View Patent ↗The present invention refers to a floor washing-drying machine, in particular of the drives-on-board kind, provided with at least a front driving and steering wheel ( 3 ), a pair of rear wheels ( 5 ), a brush-carrying head ( 4 ) positioned between the front driving wheel and the supporting axle of the rear wheels, and a wiping and vacuuming device ( 6 ) arranged behind the rear wheels. The brush-carrying head ( 4 ) is connected with the machine frame through a support and steering system of four-arm linkage type (X,Y,J,W; 17,19 ) which is driven by a gear steering device ( 11,12,14,15 ). The technical solution allows to solve efficiently the problem of collecting washing liquid and to dampen impacts of the machine against obstacles which it may encounter along its path.
1. A floor washing-drying machine, comprising:
a chassis;
a steering wheel to receive steering input from a user;
a front wheel for driving and steering the machine, connect to the steering wheel;
a pair of rear wheels connected by an axle;
a linkage support;
a brush-carrying head-piece between the front wheel and the axle which is supported by the linkage support; and
a wiping and vacuuming device behind the rear wheels,
wherein the brush-carrying head-piece is connected to the chassis of the machine via the linkage support and is actuated in a horizontal plane by the steering wheel of the machine through a geared steering device such that movement of the steering wheel causes movement of the brush-carrying head-piece, relative to the chassis.
2. The floor washing-drying machine according to claim 1 , wherein:
the linkage support comprises a four bar linkage support and swinging system including two arms hinged on two bars attached to the chassis of the machine and two bars attached to the brush-carrying head-piece, respectively.
3. The floor washing-drying machine according to claim 1 , wherein the geared steering device comprises:
a gear connected to the steering column of the machine and to rotatably operate two half-ring gears, the first half ring gear to actuate the front wheel, and the second half ring gear to engage a sector gear to actuate an arm of the linkage support.
4. The floor washing-drying machine according to claim 3 , wherein:
the sector gear of the geared steering device is hinged on a bar of the linkage support which is attached to the chassis of the machine, and is linked to an extension of the bar via a spring.