CN210659945U

CN210659945U - Drill bit for coal mine mining

Info

Publication number: CN210659945U
Application number: CN201920924051.1U
Authority: CN
Inventors: 杨兴旺; 王健; 王翱翔; 闫文刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-06-02
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a drill bit for coal mining, which comprises a drill bit and a body, wherein the drill bit and the body are integrally formed, the bottom end of the body is connected with a drill rod through a plurality of screw threads, the upper surface of the drill bit is provided with a central groove, a central drill is arranged inside the central groove, a plurality of uniformly distributed spiral grooves are arranged on the outer side wall of the drill bit, the upper surface of the drill bit is provided with a plurality of uniformly distributed first drill teeth, the plurality of first drill teeth are all positioned between the spiral grooves, and the first drill teeth and the drill bit are integrally formed. The crushing capacity is strong, the mining speed is high, and the mining efficiency is high.

Description

Drill bit for coal mine mining

Technical Field

The utility model relates to a drill bit, in particular to drill bit for coal mine mining belongs to drill bit technical field.

Background

Coal mines are a reasonable space for humans to excavate coal-rich geological formations, and mining bits are required to mine the coal mine. The mining coal mine needs a special mining drill bit, the breaking capacity of the mining drill bit on the drill bit market is general, the mining speed is low, the efficiency is not high, the mined coal is not fine, the quality is not high, the dismounting process is complex, and the part of the drill bit is not convenient to replace.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a drill bit for coal mining.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a drill bit for coal mine mining, including drill bit and body, drill bit and body integrated into one piece, there is the drilling rod bottom of body through a plurality of screw thread connections, the central groove has been seted up to the upper surface of drill bit, the inside in central groove is provided with the center and bores, set up a plurality of evenly distributed's helicla flute on the lateral wall of drill bit, the upper surface of drill bit is provided with a plurality of evenly distributed's the first tooth that bores, and is a plurality of first brill tooth all is located between the helicla flute, first brill tooth and drill bit integrated into one piece, and is a plurality of the through-hole has all been seted up to the inside wall of helicla flute, the helicla flute passes through-.

As a preferred technical scheme of the utility model, the pick groove corresponding with the helicla flute has been seted up to the upper surface of drill bit, cut the tooth's socket and be linked together with the helicla flute, it bores the tooth to be provided with the second on the inner wall of tooth's socket to cut, tooth and drill bit integrated into one piece are bored to the second.

As an optimal technical scheme of the utility model, the second bores the one end threaded connection that the tooth kept away from first brill tooth and has the pick, the pick is located the inside of cutting tooth's socket.

As a preferred technical scheme of the utility model, the center bores including cutting head and dabber, cutting head and dabber integrated into one piece, the cross recess has been seted up to the upper surface of cutting head, a plurality of evenly distributed's strengthening groove is seted up to the bottom of cross recess, and is a plurality of the equal fixedly connected with in inside of strengthening groove strengthens boring.

As a preferred technical scheme of the utility model, the shaft groove corresponding with the dabber has been seted up to the bottom in center groove, the shaft groove runs through the body, dabber sliding connection is in the inside of shaft groove, the inside wall fixedly connected with stopper of shaft groove, the spacing groove corresponding with the stopper has been seted up to the lateral wall of dabber, the stopper is located the inside of spacing groove, the bottom threaded connection of dabber has the wrong ring, the inside wall in shaft groove has been seted up and has been twisted the corresponding first step groove of ring, it is located the inside in first step groove to twist the ring.

As an optimal technical scheme of the utility model, the second ladder groove has been seted up to the bottom of body, the drilling rod is located the inside in second ladder groove.

The utility model discloses the beneficial effect who reaches is: the utility model relates to a coal mining drill bit is through setting up first brill tooth, the tooth is bored to the second, the pick is bored with the enhancement and is bored and carry out outer destruction to the coal seam simultaneously, when the exploitation colliery, first brill tooth can destroy whole hard coal seam, the second is bored tooth and pick and is destroyed the coal seam simultaneously, make the coal of exploitation become cubic, the enhancement is bored and can further destroy the formation coal fines to cubic coal, crushing capacity is strong, the exploitation is fast, high mining efficiency, and when needs change bit parts, only need twist the screw, just can take off drill bit and body, twist to remove to twist the ring and can bore the axle inslot with the center and take out and change, threaded connection also only needs to twist to remove to change the pick on the second bores the tooth.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a plan view of the present invention.

In the figure: 1. a drill bit; 2. a body; 21. a screw; 22. a shaft groove; 23. a limiting block; 24. a first step groove; 25. a second stepped groove; 3. a drill stem; 4. a central drill; 41. a central slot; 5. a helical groove; 51. a through hole; 6. a first drill tooth; 7. a second drill tooth; 71. cutting tooth grooves; 72. a cutting pick; 8. a cutting head; 81. a cross-shaped groove; 82. a reinforcing groove; 83. a reinforced drill; 9. a mandrel; 91. a limiting groove; 92. and (6) screwing the ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Examples

As shown in fig. 1-3, the utility model provides a drill bit for coal mining, which comprises a drill bit 1 and a body 2, wherein the drill bit 1 and the body 2 are integrally formed, the bottom end of the body 2 is connected with a drill rod 3 through a plurality of screws 21 by screw threads, the upper surface of the drill bit 1 is provided with a central groove 41, the inside of the central groove 41 is provided with a central drill 4, the drill bit 1 can destroy a hard coal bed, the central drill 4 can destroy the destroyed coal into fine coal with higher quality, the outer side wall of the drill bit 1 is provided with a plurality of uniformly distributed spiral grooves 5, the generated coal dust can be discharged through the spiral grooves 5 during mining, the occurrence of blockage of the drill bit 1 is avoided, the upper surface of the drill bit 1 is provided with a plurality of uniformly distributed first drill teeth 6, the plurality of first drill teeth 6 simultaneously destroy the whole coal bed, the plurality of first drill teeth 6 are all positioned between the spiral grooves 5, first brill tooth 6 and drill bit 1 integrated into one piece, through-hole 51 has all been seted up to the inside wall of a plurality of helicla flute 5, and helicla flute 5 is linked together through-hole 51 and central groove 41, and the fine coal that will bore 4 breakage and the soot dust that forms follow through-hole 51 and discharge.

The cutting tooth groove 71 corresponding to the spiral groove 5 is formed in the upper surface of the drill bit 1, the cutting tooth groove 71 is communicated with the spiral groove 5, the second drill tooth 7 is arranged on the inner wall of the cutting tooth groove 71, the second drill tooth 7 and the drill bit 1 are integrally formed, the second drill tooth 7 destroys the coal rock into blocks, one end of the second drill tooth 7, far away from the first drill tooth 6, is in threaded connection with the cutting tooth 72, the cutting tooth 72 is located inside the cutting tooth groove 71, the cutting tooth 72 in threaded connection is convenient to detach and replace, and the destructive power for destroying the coal rock stratum is enhanced in the using process.

The central drill 4 comprises a cutting head 8 and a mandrel 9, the cutting head 8 and the mandrel 9 are integrally formed, the upper surface of the cutting head 8 is provided with a cross-shaped groove 81, the bottom of the cross-shaped groove 81 is provided with a plurality of reinforcing grooves 82 which are uniformly distributed, the insides of the reinforcing grooves 82 are fixedly connected with reinforcing drills 83, the reinforcing drills 83 can destroy coal briquettes into fine coal, the generated soot dust can enter the through hole 51 from the cross-shaped groove 81 and is discharged, the bottom of the central groove 41 is provided with a shaft groove 22 corresponding to the mandrel 9, the shaft groove 22 penetrates through the body 2, the mandrel 9 is slidably connected with the inside of the shaft groove 22, the inner side wall of the shaft groove 22 is fixedly connected with a limiting block 23, the outer side wall of the mandrel 9 is provided with a limiting groove 91 corresponding to the limiting block 23, the limiting block 23 is positioned inside the limiting groove 91, so that the mandrel 9 does not rotate inside the, first step groove 24 corresponding with collar 92 has been seted up to the inside wall of shaft groove 22, collar 92 is located the inside in first step groove 24, screws up collar 92 and can follow drill bit 1 with the center and take out and change, and second step groove 25 has been seted up to the bottom of body 2, and drilling rod 3 is located the inside in second step groove 25, makes the connection of drilling rod 3 and body 2 more firm through screw 21.

Specifically, when the utility model is used, the drill rod 3 rotates to enable the drill bit 1 and the central drill 4 to rotate simultaneously to mine the coal bed, the first drill tooth 6, the second drill tooth 7, the cutting pick 72 and the reinforcing drill 83 destroy the coal bed simultaneously, the first drill tooth 6 rotates to destroy the whole hard coal bed, the second drill tooth 7 and the cutting pick 72 are matched to destroy the coal bed to form lump coal, the reinforcing drill 83 further destroys the lump coal to form fine coal, soot dust formed in the mining process is discharged from the cross-shaped groove 81, the through hole 51 and the spiral groove 5, the drill bit 1 and the central drill 4 cannot be blocked, the mining efficiency is not influenced, the crushing capacity is strong, the mining speed is high, the mining efficiency is high, when parts need to be disassembled for replacement, only the screw 21 needs to be screwed, the drill bit 1 and the body 2 can be taken down, the screwing ring 92 is screwed down to take the central drill 4 out of the shaft groove 22 for replacement, the pick 72, which is threaded on the second tooth 7, also needs to be replaced by simply twisting it off.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drill bit for coal mining is characterized by comprising a drill bit (1) and a body (2), the drill bit (1) and the body (2) are integrally formed, the bottom end of the body (2) is connected with a drill rod (3) through a plurality of screws (21) in a threaded manner, the upper surface of the drill bit (1) is provided with a central groove (41), a central drill (4) is arranged in the central groove (41), the outer side wall of the drill bit (1) is provided with a plurality of uniformly distributed spiral grooves (5), a plurality of first drilling teeth (6) which are uniformly distributed are arranged on the upper surface of the drill bit (1), the first drilling teeth (6) are all positioned among the spiral grooves (5), the first drilling teeth (6) and the drill bit (1) are integrally formed, the inner side walls of the spiral grooves (5) are provided with through holes (51), the spiral groove (5) is communicated with the central groove (41) through a through hole (51).

2. The drill bit for coal mine mining according to claim 1, characterized in that the upper surface of the drill bit (1) is provided with a tooth cutting slot (71) corresponding to the spiral groove (5), the tooth cutting slot (71) is communicated with the spiral groove (5), the inner wall of the tooth cutting slot (71) is provided with a second drilling tooth (7), and the second drilling tooth (7) is integrally formed with the drill bit (1).

3. A drill bit for coal mine mining according to claim 2, characterized in that the end of the second tooth (7) remote from the first tooth (6) is threadedly connected with a pick (72), the pick (72) being located inside the tooth cutting slot (71).

4. The drill bit for coal mine mining according to claim 1, wherein the central drill (4) comprises a cutting head (8) and a mandrel (9), the cutting head (8) and the mandrel (9) are integrally formed, a cross-shaped groove (81) is formed in the upper surface of the cutting head (8), a plurality of reinforcing grooves (82) are uniformly distributed in the bottom of the cross-shaped groove (81), and a reinforcing drill (83) is fixedly connected inside the plurality of reinforcing grooves (82).

5. The drill bit for coal mine mining according to claim 4, characterized in that a shaft groove (22) corresponding to the mandrel (9) is formed at the bottom of the central groove (41), the shaft groove (22) penetrates through the body (2), the mandrel (9) is slidably connected inside the shaft groove (22), a limiting block (23) is fixedly connected to the inner side wall of the shaft groove (22), a limiting groove (91) corresponding to the limiting block (23) is formed in the outer side wall of the mandrel (9), the limiting block (23) is located inside the limiting groove (91), a screwing ring (92) is connected to the bottom end of the mandrel (9) in a threaded manner, a first step groove (24) corresponding to the screwing ring (92) is formed in the inner side wall of the shaft groove (22), and the screwing ring (92) is located inside the first step groove (24).

6. The drill bit for coal mine mining according to claim 1, characterized in that the bottom of the body (2) is provided with a second stepped groove (25), and the drill rod (3) is positioned inside the second stepped groove (25).