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发明授权
US6053251A Reduced travel operating mechanism for downhole tools 失效
减少井下工具的行驶操作机构

Reduced travel operating mechanism for downhole tools
摘要：
A reduced travel operating mechanism for downhole tools is provided. The reduced travel operating mechanism (57) includes a load ratio system (59) which may include compression ring (102) disposed within circumferential guide pocket (123) and a linkage system (61) disposed within mechanism pocket (125). The linkage system (61) may include first link (112), master link (114), and second link (116) coupled between compression ring (102) and connecting member (118). A loading system (63), which may include a hydraulic piston (100), acts on compression ring (102) to move compression ring (102) a first distance. Connecting member (118) moves a second distance in response to the movement of compression ring (102) a first distance. The linkage system (61) may operate such that the second distance is greater than the first distance or operate such that the first distance is greater than the second distance. A biasing system (139), which may include springs (104), may be included to bias compression ring (102) in a first position.
摘要（中）：

提供了一种降低井下工具的行程操作机构。 减速行驶操作机构（57）包括负载比系统（59），其可以包括设置在周向引导槽（123）内的压缩环（102）和设置在机构槽（125）内的连杆系统（61）。 联动系统（61）可以包括联接在压缩环（102）和连接构件（118）之间的第一连杆（112），主连杆（114）和第二连杆（116）。 可以包括液压活塞（100）的装载系统（63）作用在压缩环（102）上以将压缩环（102）移动第一距离。 连接构件（118）响应于压缩环（102）的移动而移动第二距离第一距离。 联动系统（61）可以操作使得第二距离大于第一距离或操作使得第一距离大于第二距离。 可以包括可包括弹簧（104）的偏压系统（139）以将压缩环（102）偏置在第一位置。

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