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crown block

美英

un.天车；起重定滑轮；冠轮
网络定滑轮组件；钻台；天钻

crown block

crown block

英-汉网络释义

crown block

un.

1.天车

2.起重定滑轮

3.冠轮

1

To replace the drilling line wrapped around the crown block and traveling block .

为更换缠绕在天车和游动滑车周围的钻井钢丝绳用。

2

The derrick man, positioned at the crown block , is to advise the driller when the snake is coming through the crown sheave.

井架工看守在天车上，当蛇皮接绳器到达天车时，通知司钻。

3

Why does a crown block have one more sheave than the matching traveling block ?

天车为什么比游车多一个滑轮？

4

How to estimate leading time for a crown block ?

天车的生产周期如何计算？

6

Statical force analysis of derrick crown block structure by using finite element method

钻塔天车结构有限元静力分析

7

The invention eliminates the phenomenon of the rail gnawing of crown block caused by rail joint crushing ;

本发明消除了轨道接头压溃造成天车啃轨的现象；

8

Drilling Plateform Top drive Derrick Crown block Drilling line Casing Hydraulic valve

钻井平台顶驱井架天车大绳套管液压阀

9

Maximum load of crown block

天车最大载荷

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