| 摘要 |
An angle drilling device for introducing or expanding wellbores that are inclined in relation to the horizontal comprises an angle-adjustable bore rig 2, for a movable feed drive 6, pivotally connected with a base frame 1 at pivot point 3 while a connection 7, for example a link bar, extends between the feed drive and the base frame at a second pivot point 8 and has a constant length. The change in inclination is achieved as a consequence of the distance between both pivot points 3 and 8 remaining constant and the constant length of the connection 7 between the feed drive and the base frame such that the attempted movement of the feed drive causes a change in the angles between the bore rig 2 the base frame 1 and the connection 7. The bore rig is held in position between two locking plates on the base frame by pins inserted in holes 10 and 11 in the locking plates 9. |
