| 摘要 |
<p>PURPOSE:To make it possible to automatically feed lubricant by providing a lubricant feed circuit connecting between a surface making contact with a pin for coupling a first link and a surface making contact with a pin for coupling a bucket, in a second link. CONSTITUTION:A grease discharged from a distributor 31 flows through stationary pipe lines 33, 34 and then flows into a lubricant feed passage by way of the end faces of pins 16, 17 coupling between a link 15 and an arm 11, and then enters into a gap between the contact surfaces of the pins 16, 17 and a bearing on the arm 11. Grease discharged from the distributor 31 flows through a pipe line 35 and then into a lubricant feed passage for a pin 24, and then flows into a gap between the contact surfaces of a bearing on a link 15 and a pin 24. Further, the grease flow through a recess in the pin 24 and a hole in the bearing on the link 15, and through a lubricant feed passage, and flows through a stationary pipe line and a lubricant passage laid on the lateral surface of the link 15 and into a gap between the contact surfaces of a bearing and a pin 26.</p> |
