| 摘要 |
A link (100) for a trenching apparatus (65), and an endless chain (33) comprised of repeating sets of links constructed in accordance with the present invention, for efficient and precise trenching operations. The links are pentagonal Iy- shaped in cross section and/or when viewed from the ends, with a top surface that includes a surface that is angled at an angle of between about 105° and about 175° relative to the direction of movement of the links around a chain-milling device (35). Cutting teeth (120) are mounted in bores in this angled surface (124) that are themselves angled relative to each other and to the direction of movement of the links when the links are pivotally linked to a plurality of other links to form an endless chain (33) for a chain-milling device (35). The structure of the teeth and the links are designed to cooperate with each other to increase the durability and penetrating power of the teeth as the teeth encounter rock formations during trenching operations. |
