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发表于 2012-2-22 14:06
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来自: 中国天津
有一份SEATRAX的投标书,其中有一段描述:
EMERGENCY RELEASE SYSTEM:
Emergency Release for Main & Aux’ hoists, with additional Wave Follower on the
Aux’ hoist. The system includes a constant tension feature to release load in the event that
the hook is caught on the supply boat. System is manually operated and will pay out cable
with an approximate back tension of 1,500 lbs per line. The Wave Follower feature is
intended for use to facilitate supply boatlifts in rough weather. The Wave Follower
accomplishes this goal by allowing the hoist line to reel-out/reel-in at a low back tension
prior to liftoff from the supply boat deck.
我认为这是一种较简单的升沉补偿,与专门的升沉补偿装置还有一定的差距。吊机这种恒张力系统只适用于不太恶劣的环境。技术交流时,老外举例:当吊机钩头如果挂在另一条船上时,启用了恒张力系统,钩头的钢丝绳会随着波浪起伏惊醒补偿或收紧;甚至那条船远离时,钢丝绳也会跟随放出,不至于把钢丝绳拉断或把吊机拉倒。 |
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