CN215520800U

CN215520800U - Tunneling drill bit for coal mine

Info

Publication number: CN215520800U
Application number: CN202121972890.4U
Authority: CN
Inventors: 邱明明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-22
Filing date: 2021-08-22
Publication date: 2022-01-14
Anticipated expiration: 2031-08-22

Abstract

The utility model discloses a tunneling drill bit for a coal mine, and particularly relates to the technical field of tunneling drill bits. The extension fixing groove and the fixing bolt are protected through the shielding pipe, the condition that soil, gravel and the like block the inside of the extension fixing groove and the inner hexagonal hole of the fixing bolt is avoided, the fixing bolt is simple and convenient to disassemble, the disassembling speed is high, the drill bits are arranged independently, when one of the drill bits is damaged, only one damaged drill bit can be replaced, the use cost is saved, resources are saved, the broken materials can be upwards discharged through the arrangement of the spiral blades, the drilling speed is accelerated, and the tunneling efficiency is improved.

Description

Tunneling drill bit for coal mine

Technical Field

The utility model relates to the technical field of tunneling drill bits, in particular to a tunneling drill bit for a coal mine.

Background

Coal is buried in the underground important resource, and the colliery all needs to use the tunnelling drill bit when exploring to adopt and digging a well to the coal, uses comparatively hard rock structure in the drill bit can the broken colliery for coal mining can go on smoothly, and the drill bit is trompil and reaming's leading tool, and the colliery of china is mostly in the deep level, therefore the mining mode is coal mining in the pit mostly, also leads to the probability that uses the drill bit among the mining process more like this. Because the metal material cost of preparation drill bit is higher, consequently the volume of drill bit all is less, the drill bit need use with the drilling rod cooperation when drilling, and the drill bit is connected with the drilling rod and is used the bolt to be connected, and in order to prevent that the bolt from influencing the drilling process, generally offers the recess in the drilling rod outer end, and the bolt can be deepened inside the recess.

At present, the drill bit is when in-service use, and inside earth and grit etc. can enter into drill bit and drilling rod fixed connection's recess among the tunnelling process, this can make fixing bolt be difficult for pulling down, just comparatively troublesome when changing the drill bit, be difficult for changing, and the drill bit is overall structure, need change whole drill bit when having partly damage, and the cost is too high, comparatively extravagant resource.

Therefore, it is necessary to provide a coal mine heading drill to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tunneling drill bit for a coal mine, which protects an extension fixing groove and a fixing bolt through a shielding pipe, avoids the condition that earth, gravel and the like block the inside of the extension fixing groove and a hexagon socket hole of the fixing bolt, enables the fixing bolt to be detached more simply and conveniently, has higher detaching speed, and has a plurality of independent drill bits.

In order to achieve the above purpose, the utility model provides the following technical scheme: a tunneling drill bit for coal mines comprises a drill rod and three drill bits, wherein the three drill bits are arranged at one end of the drill rod, a connecting block is fixedly arranged at one side of the drill bit close to the end part of the drill rod, one end of the drill rod is provided with three mounting grooves, the connecting block is arranged inside the mounting groove, a fixing screw hole is arranged on the inner wall of the mounting groove, the fixing screw hole is arranged outside the connecting groove and communicated with the inside of the connecting groove, the outer end of the drill rod is provided with three extending fixing grooves, the extending fixing grooves are arranged outside the fixing screw hole and communicated with the inside of the fixing screw hole, the outer end of the drill rod is provided with three fixing bolts, one end of each fixing bolt penetrates through the extending fixing grooves and the fixing screw hole and extends into the connecting groove, one end of each fixing bolt is connected with the fixing screw hole and the connecting groove through threads, the outer end of the drill rod is provided with a shielding pipe, the fixing bolt and the extension fixing groove are both arranged inside the shielding pipe, and a helical blade is fixedly arranged at the outer end of the shielding pipe.

Preferably, the outer end of the drill rod is provided with an external thread, the inner end of the shielding pipe is provided with an internal thread corresponding to the external thread, and the shielding pipe is connected with the drill rod through the thread.

Preferably, the cavity is formed in the drill rod, a return spring is arranged in the cavity, one end of the return spring is fixedly connected with the cavity, a limiting plate is fixedly arranged at the other end of the return spring, and the limiting plate is arranged in the cavity.

Preferably, the fixed movable stopper that is equipped with in limiting plate top, the movable stopper top extends to the drilling rod outer end, the movable stopper is established and is being kept away from the one end of drill bit at the sheltering tube, the spacing groove has been seted up to the sheltering tube outer end, the spacing groove is established in one side that helical blade kept away from the drill bit, the movable stopper top is established at the spacing inslot portion.

Preferably, the drill bit and the connecting block are integrally formed.

Preferably, the drill bit and the connecting block are both made of hard alloy materials.

Preferably, the outer end face of the fixing bolt and the outer end face of the drill rod are in the same curved surface.

Preferably, the outer end face of the movable limiting block and the outer end face of the shielding pipe are in the same curved surface.

In the technical scheme, the utility model provides the following technical effects and advantages:

1. the connecting block is inserted into the mounting groove, the fixing bolt is screwed into the fixing screw hole and the connecting groove, the outer end of the fixing bolt can penetrate into the extending fixing groove, the shielding pipe rotates towards the direction close to the drill bit, the shielding pipe can shield the extending fixing groove and the fixing bolt, the drill bit can crush coal, rock and the like in the drilling process, the spiral blade can drive the crushed objects upwards, the extending fixing groove and the fixing bolt are protected through the shielding pipe, the condition that the soil, the sand, the like and the like block the extending fixing groove and the inner hexagonal hole of the fixing bolt is avoided, the fixing bolt is easy and convenient to disassemble, the disassembling speed is high, the drill bits are arranged independently, when one of the drill bits is damaged, only one of the damaged drill bits can be replaced, the use cost is saved, resources are saved, and the crushed materials can be upwards discharged by arranging the spiral blade, the drilling speed is accelerated, and the tunneling efficiency is improved;

2. limiting groove portion is gone into to the stopper card through activity stopper card, can carry out spacing fixed to sheltering from the pipe like this, and fixed comparatively firm, when needs will shelter from the pipe and pull down, will move about the stopper and push down, then rotate and shelter from the pipe can, consolidate sheltering from the pipe through activity stopper, can prevent to shelter from the pipe and rotate at drilling in-process for it is comparatively firm to shelter from fixed of pipe, and the result of use is better.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an overall exploded view of the present invention;

FIG. 3 is a schematic perspective cross-sectional view of a drill stem of the present invention;

FIG. 4 is a schematic perspective cross-sectional view of a drill stem of the present invention;

fig. 5 is a schematic perspective view of the shielding tube of the present invention.

Description of reference numerals:

1 drilling rod, 2 drill bits, 3 connecting blocks, 4 mounting grooves, 5 fixed screw holes, 6 connecting grooves, 7 extending fixing grooves, 8 fixing bolts, 9 shielding pipes, 10 helical blades, 11 external threads, 12 internal threads, 13 cavities, 14 reset springs, 15 limiting plates, 16 movable limiting blocks and 17 limiting grooves.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

The utility model provides a coal mine tunneling drill bit as shown in figures 1-3, which comprises a drill rod 1 and three drill bits 2, wherein the three drill bits 2 are all arranged at one end of the drill rod 1, a connecting block 3 is fixedly arranged at one side of each drill bit 2 close to the end part of the drill rod 1, one end of each drill rod 1 is provided with three mounting grooves 4, the connecting block 3 is arranged inside the mounting groove 4, a fixing screw hole 5 is arranged on the connecting block 3, the inner wall of each mounting groove 4 is provided with a connecting groove 6, the fixing screw hole 5 is arranged at the outer side of the connecting groove 6 and communicated with the inside of the connecting groove 6, the outer end of each drill rod 1 is provided with three extending fixing grooves 7, the extending fixing grooves 7 are arranged at the outer side of the fixing screw hole 5 and communicated with the inside of the fixing screw hole 5, the outer end of each drill rod 1 is provided with three fixing bolts 8, one end of each fixing bolt 8 penetrates through the extending fixing groove 7 and the fixing screw hole 5 and extends into the connecting groove 6, all through threaded connection between 8 one ends of fixing bolt and fixed screw 5 and the

spread groove

6, 1 outer end of drilling rod is equipped with shelters from pipe 9, fixing bolt 8 and extension fixed slot 7 are all established and are sheltered from inside pipe 9, shelter from that 9 outer ends of pipe are fixed and are equipped with helical blade 10.

The outer end of the drill rod 1 is processed with an external thread 11, the inner end of the shielding pipe 9 is processed with an internal thread 12 corresponding to the external thread 11, and the shielding pipe 9 is connected with the drill rod 1 through threads, so that the shielding pipe 9 is simple and convenient to disassemble.

Drill bit 2 and connecting block 3 are integrated into one piece, connect comparatively firmly, are difficult for appearing the condition such as fracture damage.

The drill bit 2 and the connecting block 3 are made of hard alloy materials, are not easy to damage and have long service life.

The outer end face of the fixing bolt 8 and the outer end face of the drill rod 1 are located on the same curved surface, and the shielding pipe 9 is convenient to shield and protect the drill rod.

The implementation mode is specifically as follows: the connecting block 3 is inserted into the mounting groove 4, the fixing bolt 8 is screwed into the fixing screw hole 5 and the connecting groove 6, the outer end of the fixing bolt 8 can penetrate into the extension fixing groove 7, so that the drill bit 2 can be fixed at the end part of the drill rod 1, the shielding pipe 9 rotates towards the direction close to the drill bit 2 until the side is close to one side of the drill bit 2, at the moment, the shielding pipe 9 can shield the extension fixing groove 7 and the fixing bolt 8, soil, gravel and the like can not block the inner hexagonal holes of the extension fixing groove 7 and the fixing bolt 8 in the drilling process, the drill bit 2 can crush coal, rocks and the like, the spiral blades 10 can drive crushed objects upwards, the drilling speed can be high, and the drilling efficiency is high, the utility model protects the extension fixing groove 7 and the fixing bolt 8 through the shielding pipe 9, avoids the situation that the inner hexagonal holes of the extension fixing groove 7 and the fixing bolt 8 are blocked by soil, and the like, make fixing bolt 8's dismantlement comparatively simple and convenient, the dismantlement speed is very fast, and drill bit 2 is a plurality of settings alone, when one of them damages, can only change one of damage, use cost is saved, resources are saved, through setting up helical blade 10, can upwards discharge broken material, drilling speed has been accelerated, the efficiency of tunnelling has been improved, this embodiment has specifically solved the drill bit that exists among the prior art when the in-service use, tunnelling in-process earth and grit etc. can enter into inside drill bit and drilling rod fixed connection's the recess, this can make fixing bolt be difficult for tearing down, it is just comparatively troublesome when changing the drill bit, be difficult for changing, and the drill bit is overall structure, need to change whole drill bit when some damages, and the cost is too high, the problem of comparatively extravagant resource.

The utility model provides a coal mine tunneling drill bit as shown in figures 1, 4 and 5, wherein a cavity 13 is formed in a drill rod 1, a return spring 14 is arranged in the cavity 13, one end of the return spring 14 is fixedly connected with the interior of the cavity 13, a limiting plate 15 is fixedly arranged at the other end of the return spring 14, and the limiting plate 15 is arranged in the cavity 13 so as to facilitate the up-and-down movement of a movable limiting block 16.

The fixed movable stopper 16 that is equipped with in 15 tops of limiting plate, the 16 tops of movable stopper extend to 1 outer end of drilling rod, movable stopper 16 establishes and is sheltering from the one end that pipe 9 kept away from drill bit 2, shelter from the pipe 9 outer end and seted up spacing groove 17, spacing groove 17 is established in one side that helical blade 10 kept away from drill bit 2, the 16 tops of movable stopper are established at spacing groove 17 insidely, can consolidate sheltering from pipe 9, can prevent to shelter from pipe 9 and rotate at drilling process for it is comparatively firm to shelter from fixed of pipe 9.

The outer end face of the movable limiting block 16 and the outer end face of the shielding pipe 9 are located on the same curved surface, so that the movable limiting block 16 cannot influence discharging of the helical blades 10.

The implementation mode is specifically as follows: after the shielding pipe 9 rotates to be close to the drill bit 2, the movable limiting block 16 can move upwards under the elastic action of the reset spring 14, the movable limiting block 16 can be clamped into the limiting groove 17, the shielding pipe 9 can be limited and fixed in this way, the fixing is firm, when the shielding pipe 9 needs to be detached, the movable limiting block 16 is pressed downwards, then the shielding pipe 9 can be rotated, the shielding pipe 9 is reinforced through the movable limiting block 16, the shielding pipe 9 can be prevented from rotating in the drilling process, the fixing of the shielding pipe 9 is firm, and the using effect is good.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims

1. The utility model provides a coal mine is with tunnelling drill bit, includes drilling rod (1) and three drill bit (2), and is three drill bit (2) are all established in drilling rod (1) one end, its characterized in that: the drill bit (2) is fixedly provided with a connecting block (3) at one side close to the end part of the drill rod (1), one end of the drill rod (1) is provided with three mounting grooves (4), the connecting block (3) is arranged inside the mounting grooves (4), the connecting block (3) is provided with a fixed screw hole (5), the inner wall of the mounting groove (4) is provided with a connecting groove (6), the fixed screw hole (5) is arranged outside the connecting groove (6) and communicated with the inside of the connecting groove (6), the outer end of the drill rod (1) is provided with three extending fixing grooves (7), the extending fixing grooves (7) are arranged outside the fixing screw hole (5) and communicated with the inside of the fixing screw hole (5), the outer end of the drill rod (1) is provided with three fixing bolts (8), one end of each fixing bolt (8) penetrates through the extending fixing grooves (7) and the fixing screw hole (5) and extends into the connecting groove (6), all through threaded connection between fixing bolt (8) one end and fixed screw (5) and spread groove (6), drilling rod (1) outer end is equipped with hides and keeps off pipe (9), fixing bolt (8) and extension fixed slot (7) are all established and are sheltered from inside pipe (9), hide and keep off fixed being equipped with helical blade (10) in pipe (9) outer end.

2. A ripper bit for coal mines according to claim 1, wherein: the drill rod is characterized in that an external thread (11) is processed at the outer end of the drill rod (1), an internal thread (12) corresponding to the external thread (11) is processed at the inner end of the shielding pipe (9), and the shielding pipe (9) is connected with the drill rod (1) through threads.

3. A ripper bit for coal mines according to claim 1, wherein: cavity (13) have been seted up to drilling rod (1) inside, cavity (13) inside is equipped with reset spring (14), fixed connection between reset spring (14) one end and cavity (13) inside, reset spring (14) other end is fixed and is equipped with limiting plate (15), limiting plate (15) are established inside cavity (13).

4. A ripper bit for coal mines according to claim 3, wherein: limiting plate (15) top is fixed and is equipped with activity stopper (16), activity stopper (16) top extends to drilling rod (1) outer end, activity stopper (16) are established and are being sheltered from the one end that pipe (9) kept away from drill bit (2), spacing groove (17) have been seted up to sheltering from pipe (9) outer end, one side of keeping away from drill bit (2) in helical blade (10) is established in spacing groove (17), activity stopper (16) top is established inside spacing groove (17).

5. A ripper bit for coal mines according to claim 1, wherein: the drill bit (2) and the connecting block (3) are integrally processed and formed.

6. A ripper bit for coal mines according to claim 1, wherein: the drill bit (2) and the connecting block (3) are both made of hard alloy materials.

7. A ripper bit for coal mines according to claim 1, wherein: the outer end face of the fixing bolt (8) and the outer end face of the drill rod (1) are in the same curved surface.

8. A ripper bit for coal mines according to claim 4, wherein: the outer end face of the movable limiting block (16) and the outer end face of the shielding pipe (9) are in the same curved surface.