A roller bit

Abstract

The invention discloses a roller cone bit, which comprises a drill bit seat and a roller cone. A tri-cone bit claw is arranged at the connection between the drill bit seat and the tri-cone bit, and a rotating bearing is arranged at the connection between the roller cone and the tri-cone bit claw. One end surface of the tri-cone bit claw is provided with a fixed seat, both sides of the tri-cone bit claw are penetrated with extrusion rods, and the inside of the tri-cone bit bit claw is symmetrically provided with a first placement slot for extruding. One end of the rod extends to the inside of the first placing groove, the surface of one end of the extrusion rod located inside the first placing groove is provided with a squeezing plate, one side of the squeezing plate is provided with a sponge block, and the inside of the tricone bit claw is One side of the first placement groove is provided with a cavity, and a liquid outlet hole is opened inside the claw of the tricone bit, and the liquid outlet hole is communicated with the container cavity and the first placement groove, and the extrusion rod is connected with the first placement groove. A spring sleeve is arranged at the connection, and an extrusion block is arranged on the surface of one end of the extrusion rod which is located outside the teeth of the tricone bit.

Description

technical field [0001] The invention relates to the technical field of drill bits, in particular to a roller cone drill bit. Background technique [0002] The roller cone bit is the most widely used drilling bit. When the roller cone bit is working, the cutting teeth alternately contact the bottom of the hole, the rock breaking torque is small, the contact area between the cutting teeth and the bottom hole is small, the specific pressure is high, and it is easy to eat into the formation; the total length of the working edge is large, so the wear is relatively reduced. Roller cone bits can adapt to a variety of formations from soft to hard. [0003] However, there are still various problems in the use of various roller cone bits on the market, and none of them have solved the long-term rotation of the rotating bearing in the existing roller cone, which increases the friction force and reduces the rotation efficiency of the roller cone. The connection between the claws of th...

AI Technical Summary

Problems solved by technology

[0003] However, there are still various problems in the use of various roller cone bits on the market, which have not solved the long-term rotation of the rotating bearing in the existing roller cone, which increases the frictional force and reduces the rotational efficiency of the roller cone. The connection between the claws of the roller cone bit and the bit seat is loose, which cannot be reinforced, and the use effect of the drill bit cannot be guaranteed. For this reason, we propose a roller cone bit

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