Rotary cutting drill bit for drilling rig

Abstract

The invention discloses a rotary cutting drill bit for a drilling rig. The rotary cutting drill bit for the drilling rig comprises a cutting assembly and a drilling barrel, wherein the drilling barrel is provided with an inner cavity for containing the cutting assembly. The rotary cutting drill bit for the drilling rig is characterized in that the cutting assembly comprises a cutting knife and a cutting rod. The free end of the cutting knife stretches out of the drilling barrel, the cutting knife comprises a driving shaft and a plurality of small-diameter drill bit bodies, the cutting rod is formed in the mode that the driving shaft and the small-diameter drill bit bodies are detachably connected, the driving shaft is coaxial with the drilling barrel, the small-diameter drill bit bodies are distributed around the driving shaft in a conical mode, and the heads of the small-diameter drill bit bodies gather at one point on the axis of the driving shaft. According to the rotary cutting drill bit for the drilling rig, the area of contact between the cutting drilling bit and a working face can be enlarged, and power loss can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of drill bits, in particular to a rotary cutting drill bit for a drilling machine. Background technique [0002] In mining or drilling operations, the frequent problem is that the drill bit is stuck, resulting in damage to the drill rig or breakage of the drill bit, especially when it comes to complex mining operations, different depths will have different hardness, and the mechanical stress of the drill bit changes too much. Larger diameters can also lead to breakage or damage to the drill bit. And when mining large-scale operations, existing drill bits are often relatively large, thus driving such a drill bit needs to consume a lot of power, and the mining efficiency is not very ideal. Contents of the invention [0003] In view of the above-mentioned defects in the prior art, the object of the present invention is to provide a rotary cutting drill bit for a drilling machine. [0004] The purpose of the...

AI Technical Summary

Problems solved by technology

[0002] In mining or drilling operations, the frequent problem is that the drill bit is stuck, resulting in damage to the drill rig or breakage of the drill bit, especially when it comes to complex mining operations, different depths will have different hardness, and the mechanical stress of the drill bit changes too much. Large can also lead to breakage or damage to the drill bit

Moreover, when mining large-scale operations, the existing drill bits are often relatively large, so it takes a lot of power to drive such a drill bit, and the mining efficiency is not very ideal

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