| 摘要 |
PURPOSE:To keep always a fixed amount of lubricant in a bearing member, by circulating lubricant through the bearing member, overflowing the lubricant in the bearing member in such a way that the lubricant has a constant level. CONSTITUTION:The crank mechanism 19 and the pump 43 are driven by the motor 15, and the lubricant 6 in the lubricant storage tank 42 is sent through the feed pipe 40 to the inner space 34 of the bering member 20. When the liquid level of the lubricant fed to the inner space 34 reaches the outlet level of the exhaust pipe 41, it is dropped through the exhaust pipe 41 into the lubricant storage tank 42. The lubricant is always stored at the same level, and can surely supplied to the sliding part of elevating rod. |
