| 摘要 |
PURPOSE:To enable to perform spraying to a corner part, etc. at the root of a timbering with a proper angle, by supporting a nozzle in a manner such that it can be independently swung on planes in parallel with its axis intersecting each other so as to bring about oscillating motion. CONSTITUTION:When a swinging motor 31 is rotated, said rotation is transmitted through a shaft 32 to a bevel gear 33. By turning another bevel gear 34 and a shaft 35 along a direction theta4 about the axis of said shaft 35, a nozzle N is swung along the same direction theta4 about the shaft 35. Thereafter, when another motor 36 is rotated, said rotation is transmitted to a gear 36 and then to a gear 39 and a hollow shaft 38, to rotate a casing 41 along a direction theta5 about the shaft 32 and to turn the shaft 35 along the same direction theta5. Hence, the nozzle N is swung along the same direction. Hereon, by turning the casing 41 under the condition that the shaft 32 is fixed by making the numbers of teeth of gears 33, 34 equal to each other, the nozzle N is swung along the direction theta4. Consequently, the desired inclination of the nozzle N can be obtained so that proper spraying to the vicinity of a timbering can be performed. |
