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1. 发明授权

US4071098A Cutter mounting extension apparatus 失效
标题翻译：切割机安装扩展装置
公开(公告)号：US4071098A
公开(公告)日：1978-01-31
申请号：US736521
申请日：1976-10-28
申请人： Charles R. Dively , R. Kenneth Peterson
发明人： Charles R. Dively , R. Kenneth Peterson
IPC分类号： E21B7/28 , E21B10/20 , E21B9/26 , E21C13/12 , E21C23/00
CPC分类号： E21B10/20 , E21B7/28
摘要： The apparatus comprises means for replaceable coupling thereof to a standard raise boring head for extending the effective cutting radius of the head. The apparatus comprises a raise boring head radius extension element which is pinned to struts extending from a circular hub; the hub, in turn, envelops a terminal end of the stem of the raise boring head. Additionally, pin-holed clevises borne by the extension elements mate with like pin-holed lugs which extend, radially, from the principal cutter bracket mounting platform of the standard raise boring head. Expansion pins are engaged with the lugs and clevises, and also secure the struts both to the hub and to the extension element, to simplify assembly and disassembly. In typical use, a plurality of radius extension elements are coupled to the standard raise boring head, the elements being arrayed circumferentially thereabout. Accordingly, tie rods are employed, to link each extension element to like extension elements adjacent thereto, principally to secure each element against displacement relative to the hub.
摘要翻译：该装置包括用于可替换地连接到标准升高钻头的装置，用于延长头部的有效切割半径。该装置包括一个提升镗头半径延伸元件，其被固定到从圆形轮毂延伸的支柱上; 轮毂又包围了起重钻头的杆的终端。此外，由延伸元件承载的销钉夹具与类似的销钉孔一起径向延伸，从标准升高钻头的主刀架支架安装平台延伸。膨胀销与凸耳和U形夹接合，并且将支柱固定到轮毂和延伸元件上，以简化组装和拆卸。在典型的使用中，多个半径延伸元件被联接到标准升高钻头，元件围绕其周向排列。因此，采用拉杆，以将每个延伸元件连接到与其相邻的类似的延伸元件，主要是固定每个元件抵抗相对于毂的位移。

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