| 释义 |
Bull wheel
Bull wheelA large, heavy, cleated wheel used to drive the mechanism of such implements as Binders and combines.bull wheel
bull wheel[′bu̇l ‚wēl] (mechanical engineering) The main wheel or gear of a machine, which is usually the largest and strongest. A cylinder which has a rope wound about it for lifting or hauling. A wheel attached to the base of a derrick boom which swings the derrick in a vertical plane. |