| 摘要 |
A mobile cleaning and polishing apparatus is readily movable from work site to work site to effect surface cleaning and polishing of large metallic structures such as ship hulls and storage tanks. The apparatus is suspended from a crane or hoist and comprises a mobile frame assembly having mounted thereon a centrifugal projector for impelling abrasive particles against a surface to be cleaned and a collection system for collecting the abrasive particles scattered off the surface along with the removed paint, scale and other waste matter thereby preventing any contaminants from being introduced into the atmosphere. A set of magnets are resiliently mounted on the frame assembly and magnetically attract the apparatus towards the metallic structure being worked on to effectively position and maintain the apparatus in close proximity to the surface to be cleaned during its operation. A series of rollers are connected to the apparatus to enable same to roll along the surface and the rollers maintain a slight clearance between the magnets and the surface thereby preventing the magnets from physically contacting and adhering to the surface. The rollers may be positively driven by a drive system incorporated in the apparatus to advance it along the surface or the crane or hoist which suspends the apparatus may be used to effect advancement of the apparatus.
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