| 摘要 |
PURPOSE:To permit uniform lubrication for a chain and permit proper oil feeding by installing a lubricating apparatus equipped with an operation means which operates at every pitch in prime-number relation for the number of chain pitch, onto an apparatus for lubricating a chain tightened in free revolution. CONSTITUTION:When an endless chain 9 revolves continuously, a chain wheel 10 allows an operation piece 12 to pass in front of an approach switch 15 at an intervals of a prime number P2 for a chain pitch number P1, and excites an electromagnetic actuator 16. The oil feeding pump 17 of a lubricating apparatus 19 feeds the lubricating oil in an oil tank 18 into the chain 9 each time when the actuator 16 is excited. During the time when the chain repeates revolution by the amount P2, the pump 17 feeds oil P1 times at an equal intervals, and the lubrication for all the pitch of the chain 9 is uniformly executed. An electronic pulse counter for detecting the revolution of the chain 9 may be used in substitution for using the chain wheel 10, operation piece 12, and the switch 15 as operating means. |
