Quick elevator for drill rod

Abstract

The invention relates to a quick elevator for a drill rod. The quick elevator comprises an elevating cylinder, an elevating ring and a locking ring, wherein the elevating ring is fixed at the upper end of the elevating cylinder; the elevating cylinder is provided with an open chamber for clamping a joint of the drill rod; the locking ring is sleeved on the elevating cylinder and can freely rotate and slide up and down; a limiting flange preventing the locking ring from dropping is arranged on the outer wall at the lower end of the elevating cylinder; a positioning member is convexly arranged on the outer wall of the elevating cylinder; a groove parallel to the axial direction of the inner wall of the locking ring is arranged on the inner wall of the locking ring; the groove correspondingly fits with the positioning member; and the positioning member can freely pass through in the groove. The quick elevator provided by the invention has a simple, skilful and reasonable structure, can firmly clamp the drill rod and lock with the locking ring, is safe and reliable and prevents tripping; the quick elevator provided by the invention is conveniently connected with the drill rod and can safely and quickly extract lots of drill rods in the drilling construction process; and moreover, compared with other elevators, the quick elevator provided by the invention has a few parts, realizes safe and quick extraction of the drill rod by use of a simplest structure, has low cost and is convenient to manufacture and suitable for large-scale popularization and application.

Description

technical field [0001] The invention belongs to the field of drilling rig tools in engineering machinery, and relates to a device for rapidly lifting drill pipes during the drilling rig construction process, in particular to a rapid drill pipe lifter. Background technique [0002] The lifter is an important tool accessory in the drilling construction process. Its function is mainly to realize the extraction of drill pipes and quickly and safely lift a large number of drill pipes to the working face. There are hand-rubbing (threaded connection) lifters, rod-climbing lifters, etc. in the way of extracting drill pipes, but these tools have their own limitations, and the use area is narrow, especially when they are used during use. It is cumbersome and the speed cannot be increased. In the process of drilling and lifting the drill (thousands of meters of drill pipes are raised to the working face), because there are a large number of drill pipes that need to be lifted to the gr...

AI Technical Summary

Problems solved by technology

There are hand-rubbing (threaded connection) lifters, climbing rod lifters, etc. in the way of extracting drill pipes, but these tools have their own limitations, and the use area is narrow, especially when they are used during use. It is cumbersome and the speed cannot be increased. In the process of drilling and lifting the drill (thousands of meters of drill pipes are raised to the working face), because there are a large number of drill pipes that need to be lifted to the ground, the efficiency of lifting the drill pipes at a time is very low. especially important

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