| 摘要 |
1,049,591. Floor scrubbing machines. G. H. TENNANT CO. Jan. 15, 1964 [Jan. 28, 1963], No. 1811/64. Heading A4F. [Also in Division E1] A power driven machine for scrubbing roads or floors comprises a main frame portion 36 and a detachable (see Figs. 1 to 3, not shown) front scrubbing unit 54 supported therefrom. The scrubbing unit 54 contains a lower dirty water tank 55 which is connected through a float controlled aperture 58, via a chamber 59 to the inlet port 44 of an air blower 41 mounted on the main frame portion 36, and is equipped with a drainage hose 65, and upper scrubbing solution tanks 62R and 62L (not shown), all accessible through front cover 54A. From the scrubbing solution tanks, a liquid distributing system 72-87 (Fig. 8, not shown) provides a metered discharge of liquid in a transverse line across the surface to be scrubbed. The scrubbing unit 54 also pivotably carries a swept material collection chamber 91 which co-operates with an adjustable mechanically or hydraulically driven sweeping brush 27 within a working enclosure 30 on the main frame portion 36, to collect swept up debris and dirtied water previously deposited by the liquid distributing system. The dirty liquid is drawn up from collection chamber 91 to dirty water tank 55 through flexible hose 997, by the suction generated by air blower 41. An auxiliary hydraulically powered rotary cylindrical scrubbing brush 100 is also pivotably carried by the scrubbing unit 54 powered from a source on the main frame portion 36. Alternatively this power source and/or the suction blower may be mounted on the detachable scrubbing unit 54. The main frame portion 36 also resiliently mounts on its front side a retractable kerb scrubbing brush 111, (see Figs. 4 to 6, not shown) hydraulically operated from the same source as brush 100, and fed with scrubbing liquid via hose 84. Behind this brush 111 a pivotably mounted diagonal squeegee 137 (see Figs. 5 and 10 not shown) diverts this liquid into the path of sweeping brush 27 to be swept into collection chamber 91. Any liquid not collected in chamber 91 is directed at the rear of main frame portion 36 by pivotably mounted retractable and detachable V-shaped squeegee 162 and (see Figs. 10 to 12 not shown) to central suction tube 166 to be drawn into collecting tank 55 by blower 41 through flexible hose 167. In a modification (Figs. 13 and 14, not shown) the rear squeegee assembly is replaced by a similarly mounted water collecting and pick up assembly comprising a V-shaped plenum chamber 251 with a slotted outlet nozzle 253 to direct an air blast against the residual water on the surface being scrubbed, to direct it into the central pick up suction tube. |
