| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that the decrease in abrasion resistance to cause slippage, the transmission of an insufficient driving power to a wind-up drum and the large reduction in a hose-winding force are caused, when the end portion of a transmission roller or the wind-up drum is wetted with a chemical liquid or the like, in a power sprayer which mounts a spraying machine, a hose-winding machine, and an engine on a machine frame, and rotates the wind-up drum of the hose-winding machine by bringing the transmission roller driven by a power from the engine into contact with the end portion of the wind-up drum. SOLUTION: This power sprayer characterized by externally fitting and fixing a ring-like plate 67, 68, or 69 to the end portion of the wind-up drum 12 and forming grooves 67a in the ring-like plate 67, 68, or 69 or forming openings 68a, 69a, or 69b arranged in one of various forms such as a staggered form in the ring-like plate 67, 68, or 69.
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