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1. 发明授权

US5931542A Device and method for preventing wear on road milling and trenching equipment 失效
标题翻译：用于防止道路铣削和下料设备磨损的装置和方法
公开(公告)号：US5931542A
公开(公告)日：1999-08-03
申请号：US828173
申请日：1997-03-18
申请人： Robert W. Britzke , H. Alan King
发明人： Robert W. Britzke , H. Alan King
IPC分类号： E21C35/197
CPC分类号： E21C35/197
摘要： A wear prevention device for use with roadmilling or trenching machine blocks which hold rotatable cutting bits. The wear prevention device includes a substantially cylindrical retainer sleeve with a longitudinally directed slot running the length of the sleeve. The wear prevention device also includes a substantially circular wear washer with a radially inwardly directed key which is adapted to fit within the sleeve slot, thereby interlocking the sleeve and the wear washer. The retainer sleeve is adapted to receive a shank of a cutting bit and is placed within a bore in a machine block. The machine block bore may further include a keyway, or the machine block may include a boss surrounding the machine block bore with the keyway The retainer sleeve may further include a radially outwardly directed key adapted to fit within the machine block bore keyway, thereby further interlocking the retainer sleeve with the machine block.
摘要翻译：一种用于与保持可旋转切削钻头的道路磨削或挖沟机器块一起使用的防磨损装置。防磨损装置包括基本上圆柱形的保持套筒，其具有延伸套筒长度的纵向定向槽。防磨损装置还包括基本圆形的耐磨垫圈，其具有径向向内指向的键，其适于装配在套筒槽内，从而使套筒和磨损垫圈互锁。保持套筒适于接收切割钻头的柄部并且被放置在机器块中的孔内。机座孔可以进一步包括键槽，或者机器块可以包括围绕机座孔的凸台与键槽。保持器套筒还可以包括适于装配在机座孔键槽内的径向向外的键，从而进一步互锁保持套与机座。

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