公开(公告)号：US3897099A

公开(公告)日：1975-07-29

申请号：US42612973

申请日：1973-12-19

申请人： SAIPEM SPA

发明人： SCODINO AMBROGIO ,  RAIMONDI ADALBERTO

IPC分类号： B66C1/42 ,  E02F5/10 ,  F16L1/12 ,  F16L1/16 ,  B66C1/30

CPC分类号： F16L1/166 ,  B66C1/427

摘要： Tong apparatus operated oleopneumatically for lifting a submerged pipeline either directly by a frogman or by an operator on a pontoon or vessel. The apparatus includes a pair of jaws controlled by a double acting cylinder with two pistons. The cylinder has a body pivotally connected to the upper end of one jaw and has an active chamber wherein a first piston with a wide cross-section slides, while a second piston having a small crosssection is pivotally connected to the upper end of the other jaw and slides coaxially as to the first piston in a second active chamber provided by the wide cross-section of the said first piston. With the present invention small quantities of oil are used in causing the jaws to approach and to grasp and lift the pipeline. The relatively wide shifting required for approaching the jaws to the pipeline to be grasped and lifted is obtained by acting oleopneumatically into the said second active chamber against the piston having a small cross-section, which involves the use of a small quantity of oil. The pipeline grasping operation, which requires a relatively small shifting and small oil consumption, is then carried out by acting oleopneumatically into the first said active chamber against the said first piston having a wide cross-section.

摘要翻译： 通过油气动作操作的通道设备，用于在浮筒或船只上直接由蛙人或操作员提起潜水管道。 该装置包括由具有两个活塞的双作用气缸控制的一对钳口。 气缸具有枢转地连接到一个钳口的上端的主体并且具有主动室，其中具有宽横截面的第一活塞滑动，而具有小横截面的第二活塞枢转地连接到 在第一活塞的第二活塞室中，由第一活塞的宽横截面提供的第一活塞的另一个下颚和滑动件同轴。