drill pipe rack的意思|示意

The standard pipe rack configuration for this drill consists of a long pipe cradle that is fastened to a pair of parallelogram- type swing arms.

本钻机的标准管架配置由一个长管道托架组成，该托架被固定在两个平行四边形的旋臂上。

The swing arms are fastened to the inside structure of the mast, and permit the pipe rack to be low-ered from the stored position to the centerline of the drill string.

两个悬臂则固定在支架的内部结构上，并允许管架从贮存位置降到钻柱中线上。