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Novel coal mine drill bit

A drill bit, a new type of technology, used in mining equipment, earthwork drilling, construction, etc., can solve the problems of short service life, easy sliding, clogging, etc., and achieve the effect of improving service life and avoiding clogging

Pending Publication Date: 2020-08-25
柴卫国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the present invention provides a new drilling drill bit for coal mines to solve the problems of unreasonable drill bit structure, easy sliding, clogging and short service life when drilling holes in the prior art.

Method used

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  • Novel coal mine drill bit
  • Novel coal mine drill bit

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Experimental program
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Effect test

Embodiment 1

[0025] see figure 1 , the coal mine new drilling drill bit includes a drill bit body 1, the drill bit body 1 is conical with an upper diameter greater than the lower diameter, a plurality of drill teeth 2 are set on the outer surface of the drill bit body 1, and a plurality of water outlet holes are also arranged on the drill bit body 1 3. The water outlet hole 3 is arranged between the two drill teeth 2 .

[0026] A plurality of drill teeth 2 in this embodiment are arranged helically along the outer surface of the drill body 1 . And the diameter of the drill teeth 2 on the top of the drill body 1 is smaller than the diameter of the drill teeth 2 on the bottom of the drill body 1 . The drill bit is matched with ordinary finished drilling rods, and can be processed according to the diameter of the actual used drilling rods, so that it can be used on finished drilling rods of different diameters, and can be used for drilling blastholes in the working face.

[0027] The drill ...

Embodiment 2

[0030] see figure 2 , The lower end of the drill body 1 is fixed with a connecting screw 4. Further, the connecting screw 4 is a hollow structure, and the inside of the connecting screw 4 communicates with the water outlet hole 3 . The drill bit is matched with the anchor drill rod, which can be used for drilling bolt support in the working face and other parts that need to be drilled. The new coal mine drilling bit of this embodiment has the advantages of convenient connection, more stable structure, long service life and smooth drilling hole wall.

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Abstract

The invention discloses a novel coal mine drill bit and relates to the technical field of mining equipment. The novel coal mine drill bit comprises a drill bit body; the drill bit body is conical shaped, and the upper diameter of the conical shape is greater than the lower diameter of the conical shape; a plurality of drilling teeth are arranged on the outer side face of the drill bit body; and aplurality of water outlets are further formed in the drill bit body. The conical drill bit body enables the contact surface of the drill bit body and a top plate to be more stable; during the drillingprocess, the drill bit body closely fits the contact surface, so that the situation that graves fall off when a gap exists is avoided; and moreover, during the drilling process, as the drilling teethon the drill bit body rotate, the inner walls of the drilled holes are smooth to avoid blocking, and the gravels are prevented from blocking a drill pipe to prolong the service life of the drill bit.

Description

technical field [0001] The invention relates to the technical field of mining equipment, in particular to a new drilling drill bit for coal mines. Background technique [0002] At present, the drill bits used by my country's coal mining enterprises are mostly column tooth drill bits, straight drill bits and Y-shaped drill bits. The following problems often occur in daily drilling work: [0003] 1. When drilling bolts, the drill bit will often slip due to uncertain factors such as angle and contact surface, which will cause the drill bit to slide when drilling. [0004] 2. During the process of drilling the bolt hole, due to the gap between the drill bit and the falling of gravel during drilling, it is easy to cause personal injury. [0005] 3. When drilling the bolt hole, due to the lithology problem of the roof, some gravel will block the drill hole, so that the medicine roll cannot be scattered into the drill hole. [0006] 4. During the drilling process, the gravel on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43E21B10/61E21D20/00
CPCE21B10/43E21B10/61E21D20/003
Inventor 柴卫国冯奇勇郑文贤吕贵鹏柴环玉张虎李云龙
Owner 柴卫国
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