Multifunctional drill bit

Abstract

The invention discloses a multifunctional drill bit and belongs to the field of drill bit rock drilling and reaming tools. The multifunctional drill bit comprises a columnar connecting body connectedwith a drill rod, a conical impact surface is arranged at one end of the columnar connecting body, alloy tooth mounting holes are formed in the conical impact surface, and a circular-arc-shaped notchis formed in the side wall of the columnar connecting body. The multifunctional drill bit is characterized in that clamping pin holes are formed in the inner walls of the alloy tooth mounting holes; clamping pins in clearance fit with the clamping pin holes are arranged in the clamping pin holes; alloy teeth are mounted in the alloy tooth mounting holes; clamping openings corresponding to the clamping pin holes are formed in the side walls of the alloy teeth; and the columnar connecting body is sleeved with a detachable reaming device. According to the multifunctional drill bit, the advantagesof existing drill bit equipment can be fully utilized while metal teeth are prevented from falling off, the utilizing value of an existing drill bit is explored, efficient reaming can be conducted, and the production cost is saved.

Description

technical field [0001] The invention relates to a multifunctional drill bit, which belongs to the field of drill bit rock drilling and hole reaming tools. Background technique [0002] The rock drill is a tool used to directly mine stone. It drills a blast hole on the rock formation so that explosives can be put into the rock to blast the rock, thereby completing the mining of stone or other stone works; and the drill bit is an important part of the rock drill. Its general It is composed of the main body of the drill bit and the alloy teeth, and the alloy teeth are installed and embedded on the front end of the drill bit through the traditional production process. In this connection, the connection strength between the drill bit blade and the drill bit body is too low, and it is easy to produce damage to the drill bit body. Loosening, or even detaching from the bit body, in this way, the falling off of an alloy tooth will inevitably cause uneven force on the entire bit, whic...

AI Technical Summary

Problems solved by technology

[0002] The rock drill is a tool used to directly mine stone. It drills a blast hole on the rock formation so that explosives can be put into the rock to blast the rock, thereby completing the mining of stone or other stone works; and the drill bit is an important part of the rock drill. Its general It is composed of the main body of the drill bit and the alloy teeth, and the alloy teeth are installed and embedded on the front end of the drill bit through the traditional production process. In this connection, the connection strength between the drill bit blade and the drill bit body is too low, and it is easy to produce damage to the drill bit body. Loosening, or even detaching from the bit body, in this way, the falling off of an alloy tooth will inevitably cause uneven force on the entire bit, which will easily damage the bit, which not only increases construction costs, but also seriously affects work efficiency; at the same time, In the rock blasting and excavation, in order to improve the blasting efficiency, the cutting holes are drilled on the working face, in order to break a certain part of the rock on the working face before blasting, and then throw it out to form a second free face, which is an auxiliary hole. , creating conditions for subsequent blasting of peripheral holes

In the prior art, the way of cutting is to adopt the form of small-aperture multi-hole cutting. Since the free surface of the small-aperture cutting is small, it needs to be densely covered with holes to provide multiple free surfaces, depending on the operating conditions and geological structure. The impact of dense holes is easy to collude, and the holes in collusion cannot continue to go deep, which will eventually affect the blasting effect

[0003] Among the existing drill bits, there is not only a lack of relevant technologies to prevent metal teeth from falling off, but also only as a drilling function. The applicant believes that there is a huge potential value to be tapped, such as the effective combination of rock drilling and hole reaming

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