| 摘要 |
A control system of a pneumatic oscillation cylinder (1) to produce the oscillating motion of a scraper (3) used in paper machines in particular. There is in the oscillation cylinder motion rod (18) motion stoppers (4), which in both wanted reversing points of the rod (18) motion open an own pressure discharge valve (5) for the said stopper in the pilot operation line (9), whereby the opening of both pressure discharge valves (5) in turns causes a reversing function in a pneumatic reversing valve (10) known as such. |
