本文介绍电动液压压接钳的钳头结构及密封形式。
The construction of operational portion of this tool and seal form used are introduced in this paper.
给大钳装上与钻杆接头或钻铤相匹配的钳头，再装上安全锁簧。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
固定链子或钳头的所有销子都应当装到位，并穿上安全销或开口销。
All pins used to secure the chain or jaws should be kept in place with safety pins or cotter pins.
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