| 摘要 |
PURPOSE:To exactly hold the fixed condition between an edge-fixed portion and an exchange edge by a method in which the basal portion of a replacement edge is lapped on the tip of the edge-fixed portion of a soil handler, and their tiered portions are matched with each other and fixed by a fixer. CONSTITUTION:The basal portion of a replacement edge 3 is lapped on the tip of an edge-fixed portion in such a way as to cover the V-shaped slope por tion of the front end of the edge-fixed portion 1 by the tip portion of the edge 3. The thickness of the portion with a pin bolt hole 2 in the central part of the lapped portion is made greater than the other portions. A bolt 5' is inserted into the hole 2 and detachably fixed to the replacement edge 3 by using nuts 5. Impact can thus be directly received only by the replacement edge 3, and thereby the edge-fixed portion can be protected by the replacement claw so that no damage occurs to partial or whole portion of the soil handler. |
