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发明名称
一种开口型动力钳夹紧机构
摘要
本实用新型公开了一种等比内曲面滚子爬坡式动力钳卡紧机构,该机构在开口齿轮内侧每一象限设置两段工作曲面,腭板滚子作两次爬坡卡紧相邻两种油管。腭板滚子处在每段工作曲面的任意位置,被卡紧管子表面承受的切向力与径向力之比(即切径比)为一预定常数。卡紧两种油管不用更换钳牙。
申请公布号
CN2042509U
申请公布日期
1989.08.09
申请号
CN88214018.3
申请日期
1988.09.16
申请人
大港石油管理局采油工艺研究所
发明人
傅永森;马建平;刘华
分类号
E21B19/10
主分类号
E21B19/10
代理机构
代理人
主权项
1、一个由开口齿轮(4).鄂板架(1).鄂板(7).鄂板滚子(2).滚子轴(3).直牙块(6).弹簧(8)组成的开口型动力钳卡紧机构,其特征是:鄂板滚子(2)沿开口齿轮(4)内侧的两段工作曲面作两次爬坡,卡紧相邻两种规格的油管,鄂板(7)内侧的直牙块(6)在卡紧两种油管时不需更换。
地址
天津市大港石油管理局采油工艺研究所
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