| 摘要 |
A dehider (10) includes a pneumatic motor (24) driving a pair of disk blades (12) in opposed cutting oscillations and a governor that controls the speed of the motor (24). Governor balls (122), acting as centrifugal weights, spin with the motor (24) and push against an inclined flange (120) on a valve head (108) to move the valve head (108) towards a valve seat (106). The motion of the valve head (108) compresses a biasing spring (112) and restricts the flow of pressurized air as the desired speed is exceeded. As speed decreases, centrifugal force decreases and the biasing spring (112) opens the valve to provide additional power to the motor (24). The disk blades (12) are provided with a cylindrical central lip that substantially increases the area of the central bearing that the blades (12) turn on and produces significantly longer blade life. |
