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    • 2. 发明授权
    • Shear lock keeper ring
    • 剪刀锁定环
    • US4582364A
    • 1986-04-15
    • US606035
    • 1984-05-01
    • Charles F. deMey, III
    • Charles F. deMey, III
    • E21C35/18E21C35/197E21B10/00
    • E21C35/197E21C2035/1816
    • A shear lock keeper ring is shown for maintaining the shank of a bit in contact with the retaining shoulder in the shank receiving opening of a bit mounting block of the type found on earth working machinery. The keeper ring is formed from a resilient material and has a ring-shaped inner portion which is received about the bit shank within a retaining groove on the shank. The keeper has a resilient outer portion which overlays the inner portion and which is joined to the inner portion at a shearable junction. The outer portion is deformable inwardly toward the inner portion during assembly of the shaft into the block opening. The outer portion is shearable upon opposite relative movement of the shaft in the block opening to disassemble the shaft from the block.
    • 示出了一个剪切锁定保持环,用于在一个位于地面工作机械上的钻头安装块的柄部接收开口中,保持一个位的柄与保持肩部接触。 保持环由弹性材料形成,并且具有环形内部部分,该环形内部部分在柄部的保持槽内围绕钻头柄容纳。 保持器具有弹性外部部分,该外部部分覆盖内部部分,并且在可剪切的接合处与内部部分接合。 外部部分在将轴组装成块开口期间向内朝向内部变形。 外部部分可以在轴在块体开口中的相对的相对运动上被剪切,以将轴从块体拆下。