CN212154662U

CN212154662U - Drill bit for coal mine mining

Info

Publication number: CN212154662U
Application number: CN202020072360.3U
Authority: CN
Inventors: 毛宏伟
Original assignee: Shijiazhuang Yulin Mechanical Equipment Co ltd
Current assignee: Shijiazhuang Yulin Mechanical Equipment Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-12-15
Anticipated expiration: 2030-01-14

Abstract

The utility model discloses a drill bit for coal mine mining, wherein one end of a drill rod is provided with a limiting groove, the inner wall of the limiting groove is uniformly provided with a plurality of buckling grooves along the circumferential direction, all the buckling grooves are symmetrical about the center of the limiting groove, one side of each buckling groove is flush with the outer side of the drill rod, the middle parts of all the buckling grooves are provided with through holes, a conical end and a fixed rod are respectively fixed at the two sides of a drill plate, the surface of the fixed rod is uniformly provided with a plurality of convex parts along the circumferential direction, the fixing rod is inserted into the limiting groove, the convex parts are inserted into the buckling grooves, the middle parts of all the convex parts are provided with limiting holes which are communicated with the through holes, and a fixing screw rod is meshed in the limiting hole and the through hole through threads, the rod body of the fixing screw rod is meshed with a limiting block through threads, and the narrow end of the conical end is fixedly connected with a plurality of wedge-shaped drill blocks. The utility model discloses be convenient for change the drill bit body to it is difficult for droing to bore native body.

Description

Drill bit for coal mine mining

Technical Field

The utility model relates to a drill bit technical field especially relates to a drill bit for coal mining.

Background

Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into miners and opencast coal mines, when a coal seam is far from the ground surface, coal mining in underground excavation tunnels is generally selected, and the miners are miners.

At present, current mining drill bit is all inconvenient when using to be changed, and changes at every turn and all need to change mining drill bit is whole, and resources are wasted relatively, need different mining drill bit when different geology carries out mining, and general drill bit all is in the same place through thread engagement with the drilling rod, appears becoming flexible easily.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a drill bit for coal mine mining has solved current mining drill bit and has all inconveniently changed usually when using, and change at every turn and all need to the whole change of mining drill bit, and the more resource-wasting needs different mining drill bits when mining in different geology, and general drill bit all is in the same place through the thread engagement with the drilling rod, appears not hard up problem easily.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a drill bit for coal mining, includes drilling rod and drill bit body, the one end of drilling rod is opened there is spacing recess, the inner wall of spacing recess is evenly opened along its circumferencial direction has a plurality of buckle grooves and all buckle grooves about the central symmetry of spacing recess, one side in buckle groove with the outside parallel and level of drilling rod, the middle part in all buckle grooves is opened there is the through-hole, and the drill bit body includes drilling disc, conical end and dead lever are fixed respectively the both sides of drilling disc, the surface of dead lever is evenly opened along its circumferencial direction has a plurality of bulges, the quantity of bulge with the quantity in buckle groove is the same, the dead lever inserts in the spacing recess just the bulge inserts the buckle inslot, the middle part of all bulges is opened there is spacing hole just spacing hole with the through-hole intercommunication, all have a clamping screw through the threaded engagement in spacing hole and the through-hole just clamping screw's pole body passes through the screw The threads are engaged with a limiting block, and the narrow end of the conical end is fixedly connected with a plurality of wedge-shaped drill blocks.

Preferably, the wide end edge of the tapered end is flush with the edge of the drill plate, and a plurality of inclined drill blocks are uniformly arranged on the side surface of the drill plate along the circumferential direction of the drill plate.

Preferably, the fixing rod is completely inserted into the limiting groove, and the surface of the drill rod is provided with a spiral drilling blade along the length direction of the drill rod.

Preferably, the number of the buckling grooves is four, the number of the protruding parts is four, the limiting holes in the two symmetrical protruding parts are communicated, the fixing screw rod is inserted into the limiting holes in the two symmetrical protruding parts, and the two ends of the fixing screw rod are meshed with the limiting blocks through threads.

Preferably, the surfaces of the tapered end, the wedge surface and the auger blade are uniformly coated with a wear resistant coating.

(III) advantageous effects

The utility model provides a drill bit for coal mining possesses following beneficial effect: the utility model discloses set up drilling rod and drill bit body, the one end of drilling rod is opened there is spacing recess, and the buckle groove is seted up along its circumferencial direction to the inner wall of spacing recess, and the drill bit body includes drilling disc, toper end and dead lever, and the surface of dead lever is equipped with along its circumferencial direction and is equipped with the bulge, at first inserts the dead lever in the spacing recess, makes the bulge slide into the buckle inslot, sets up spacing hole on the bulge. The buckle inslot sets up the through-hole, through-hole and spacing hole intercommunication, and through-hole and spacing downthehole inserting have set screw, and set screw's both ends are passed through thread engagement and are had spacing piece, can make drill bit body and drilling rod fix like this to both can not appear becoming flexible, are convenient for change the drill bit body, and the toper end of drill bit body is equipped with the wedge piece, and the surface of drilling disc also is equipped with the slope piece, all is for strengthening drilling efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of a drill rod of the present invention;

fig. 3 is a schematic structural diagram of the drill bit body according to the present invention.

In the figure: 1. a drill stem; 2. a limiting groove; 3. a fastening groove; 4. a through hole; 5. a helical drilling blade; 6. fixing the rod; 7. a projection; 8. a limiting hole; 9. fixing the screw rod; 10. a limiting block; 11. a wedge-shaped drill block; 12. drilling a disc; 13. inclining the drill block; 14. a tapered end.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 2, 3, the following examples are now proposed:

a drill bit for coal mining comprises a drill rod 1 and a drill bit body, wherein one end of the drill rod 1 is provided with a limiting groove 2, the inner wall of the limiting groove 2 is uniformly provided with a plurality of clamping grooves 3 along the circumferential direction, all the clamping grooves 3 are symmetrical about the center of the limiting groove 2, one side of each clamping groove 3 is flush with the outer side of the drill rod 1, the middle parts of all the clamping grooves 3 are provided with through holes 4, the drill bit body comprises a drill plate 12, a conical end 14 and a fixing rod 6, the conical end 14 and the fixing rod 6 are respectively fixed on two sides of the drill plate 12, the surface of the fixing rod 6 is uniformly provided with a plurality of bulges 7 along the circumferential direction, the number of the bulges 7 is the same as that of the clamping grooves 3, the fixing rod 6 is inserted into the limiting groove 2, the bulges 7 are inserted into the clamping grooves 3, the middle parts of all the bulges 7 are provided with limiting holes 8, and the limiting holes 8 are communicated with the through holes 4, a fixing screw 9 is meshed in the limiting hole 8 and the through hole 4 through threads, the rod body of the fixing screw 9 is meshed with a limiting block 10 through threads, and the narrow end of the conical end 14 is fixedly connected with a plurality of wedge-shaped drill blocks 11.

In this embodiment, the wide end edge of the tapered end 14 is flush with the edge of the drill disk 12, and the side surface of the drill disk 12 is further uniformly provided with a plurality of inclined drill blocks 13 along the circumferential direction thereof. The inclined drill block 13 also serves to enhance the drilling effect.

In this embodiment, the fixing rod 6 is completely inserted into the limiting groove 2, and the surface of the drill rod 1 is provided with a spiral drilling blade 5 along the length direction thereof. The drilling effect is enhanced by the auger drilling blade 5.

In this embodiment, the number of the buckling grooves 3 is four, the number of the protruding portions 7 is four, the limiting holes 8 on the two symmetrical protruding portions 7 are communicated, the fixing screw 9 is inserted into the limiting holes 8 of the two symmetrical protruding portions 7, and two ends of the fixing screw 9 are engaged with the limiting blocks 10 through threads. The use of the fixing screw rod 9 is reduced, and the fixing screw rod 9 is convenient to install.

In this embodiment, the surfaces of the tapered end 14, the wedge 11 and the auger blade 5 are uniformly coated with a wear resistant coating that reduces their wear efficiency and extends their service life.

In fig. 1-3, the utility model discloses set up drilling rod 1 and drill bit body, the one end of drilling rod 1 is opened there is spacing recess 2, buckle groove 3 is seted up along its circumferencial direction to the inner wall of spacing recess 2, the drill bit body includes drilling disc 12, conical end 14 and dead lever 6, the surface of dead lever 6 is equipped with along its circumferencial direction and is equipped with bulge 7, at first insert dead lever 6 in spacing recess 2, make bulge 7 slide into buckle groove 3 in, set up spacing hole 8 on bulge 7. Set up through-hole 4 in the buckle groove 3, through-hole 4 and spacing hole 8 intercommunication, through-hole 4 and spacing downthehole 8 interior inserting have fixing screw 9, fixing screw 9's both ends are passed through thread engagement and are had spacing piece 10, can make drill bit body and drilling rod 1 fix like this, and both can not appear becoming flexible, be convenient for change the drill bit body, the cone end 14 of drill bit body is equipped with wedge-shaped drill block 11, the surface of drill plate 12 also is equipped with slope drill block 13, all be in order to strengthen drilling efficiency.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a drill bit for coal mining which characterized in that: the drill bit comprises a drill rod and a drill bit body, wherein one end of the drill rod is provided with a limiting groove, the inner wall of the limiting groove is uniformly provided with a plurality of buckling grooves along the circumferential direction, all the buckling grooves are symmetrical about the center of the limiting groove, one side of each buckling groove is flush with the outer side of the drill rod, the middle parts of all the buckling grooves are provided with through holes, the drill bit body comprises a drill disk, a conical end and a fixed rod, the conical end and the fixed rod are respectively fixed at two sides of the drill disk, the surface of the fixed rod is uniformly provided with a plurality of bulges along the circumferential direction, the number of the bulges is the same as that of the buckling grooves, the fixed rod is inserted into the limiting groove, the bulges are inserted into the buckling grooves, the middle parts of all the bulges are provided with limiting holes, the limiting holes are communicated with the through holes, the limiting holes and the through holes are engaged with a fixing screw rod through threads, and the rod body of the fixing screw rod is engaged with, the narrow end of the conical end is fixedly connected with a plurality of wedge-shaped drill blocks.

2. The drill bit for coal mine mining of claim 1, wherein: the wide end edge of the conical end is flush with the edge of the drill plate, and a plurality of inclined drill blocks are uniformly arranged on the side face of the drill plate along the circumferential direction of the drill plate.

3. The drill bit for coal mine mining of claim 1, wherein: the fixing rod is completely inserted into the limiting groove, and spiral drilling blades are arranged on the surface of the drill rod along the length direction of the drill rod.

4. The drill bit for coal mine mining of claim 1, wherein: the buckle groove is provided with four, the bulge is also provided with four, the limiting holes on the two symmetrical bulges are communicated, the fixing screw rod is inserted into the limiting holes of the two symmetrical bulges, and the two ends of the fixing screw rod are engaged with limiting blocks through threads.

5. The drill bit for coal mine mining of claim 3, wherein: the surfaces of the tapered end, the wedge-shaped button and the auger blade are uniformly coated with a wear-resistant coating.