| 摘要 |
<p>The invention relates to a device used for painting or preventively lining the interior of some hollow pieces of large sizes. According to the invention, the device comprises a support plate (11) whereon there is fastened an electric motor (1) and a reducer (3), the movement being transmitted from the electric motor (1), through the reducer (3), to a case (8) provided with bevel gears, through a bevel gear (2), on the case (8) there being mounted three telescopic legs (9) having, at the ends, a inclinable friction wheel (6), the feeding movement being performed due to a propeller with three arms which come in contact with a hollow semi-finished product (12) by means of the friction wheels (6) which axially displace the entire assembly, the adjustment of the propeller inclination angle being carried out both manually, and by means of a step-by-step electric motor (7), some air, oxygen and acetylene sources being connected to a supplying sleeve (10), in a tank (4) there being stored paint or powders for the preventive lining, which are entrained by an air jet, on the interior surface of the hollow semi-finished product (12) through an atomizer (5) which performs a helical movement together with the case (8).</p> |
