Well drilling bit for municipal public works

Abstract

The invention belongs to the technical field of municipal well drilling, and particularly relates to a well drilling bit for municipal public works. The well drilling bit comprises a gear ring, an annular shaft, a gear ring side wall, a supporting top cover, a motor, an annular tooth, a motor rotary shaft, an inner ring, a clamping block, a clamping block inner block, an outer ring, an ejector block and a clutch shoe. According to the well drilling bit, a ring guide loop is arranged between the inner ring and the outer ring so that the outer ring and the inner ring can rotate oppositely; the clamping block and the ejector block are matched with each other, and thus the effect that when an inner drill is stuck, an annular drill shell can rotate reversely with high powder, the well bottom is loosened through drilling from the outer circular side, and the inner drill can break away from the stuck state easily; and after the annular drill shell is stuck, rotation of the inner drill is limited by the annular drill shell, meanwhile, the inner drill is powered off, the annular drill shell obtains more power and rotates reversely, the well bottom is loosened through drilling from the outer circular side, and the inner drill and the annular drill shell can restore to the original rotation state easily. According to the well drilling bit, the inner drill can break away from the stuck state automatically through reverse rotation of the annular drill shell, and the using effect is better.

Description

[0001] Technical field [0002] The invention belongs to the technical field of municipal drilling, in particular to a drilling bit for municipal public works. Background technique [0003] At present, for drill bits, most of the drill bits used for drilling are integrally cast or forged. For the drilling of rock layers with different hardness at different depths, either a single hard drill bit or real-time replacement of the drill bit according to the drilled rock layer has reached purpose of drilling. Both of these have certain problems. For the former, the drill bit is more or less worn when drilling the softer rock layer. The cost is high, which is not cost-effective; for the latter, it is necessary to use frequent replacement of the drill bit to increase the time cost, and for rocks that are harder than the hard drill bit, it is very easy to cause the drill bit to be stuck. When the drill bit is stuck, the motor’s Rotation will prompt the drill bit to continue to rotate...

AI Technical Summary

Problems solved by technology

Both of these have certain problems. For the former, the drill bit is more or less worn when drilling the softer rock layer. The cost is high, which is not cost-effective; for the latter, it is necessary to use frequent replacement of the drill bit to increase the time cost, and for rocks that are harder than the hard drill bit, it is very easy to cause the drill bit to be stuck. When the drill bit is stuck, the motor’s Rotation will prompt the drill bit to continue to rotate, resulting in hard damage to the drill bit. At this time, a higher hardness drill bit is required. For drilling workers, using a softer drill bit to drill softer, harder or harder rocks can greatly improve operating efficiency. of

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