| 摘要 |
A system for transferring lengths of pipe laterally between a pipe rack and a pipe handling apparatus. The system comprises two spaced apart arms (61, 63) located on one side of the pipe handling apparatus next to the rack (27) Each arm has one end pivotally coupled to a support (29) such that its opposite end may move upward and downward. The two arms are located in line with each other for pivotal movement about generally parallel axes respectively. A trough (101) capable of supporting a length of pipe is pivotally coupled to each of the arms at their opposite ends such that the trough will move upward and downward with the opposite ends of the arms. Tilting mechanisms (103, 105) are provided for tilting the trough laterally in opposite directions. In addition, cylinders (71, 73) are provided for moving the arms about their axes respectively for moving the opposite ends of the arms and the trough upward and downward. An elongated trough (151) is slidably located on a vertically pivoted trough (31) to carry pipe from a derrick floor (25) to a pipe rack (27) when there is little or no height differential between the derrick floor and the pipe rack. The slidable trough may be removed when the height differential is such that pipe will slide down the vertically pivoted trough by gravity. |
