Rig Mast and Related Components

摘要

There is provided a mast for a rig, comprising a main boom having a lower end adapted for pivotal connection to a mast support of the rig; and a mast stop extending from the main boom. In use, the mast pivots between a stowed condition and an erect condition, and the mast stop abuts the mast support at a position spaced from the lower end, when the mast is in the erect condition.

主权项

1. A mast assembly for a rig, the assembly comprising:
a mast having a main boom; and a mast support of the rig; wherein, in use, the mast can pivot between a stowed condition and an erect condition, and when in the erect condition the mast is erected past vertical; wherein the main boom has a lower end adapted for pivotal connection to the mast support of the rig, and a mast stop extending from the lower end of the main boom, and when the mast is in the erect condition the mast stop abuts the mast support at a position spaced from the lower end; and wherein the mast support comprises a bearing surface at least partially formed by the mast stop; an abutment mechanism for limiting an angular position of the mast relative to the bearing surface when the mast is in the erect condition; and an adjustment device for adjusting a position of the abutment mechanism on the bearing surface to match the angular position of the mast when in the erect condition past vertical.