CN215256050U

CN215256050U - High-efficient down-the-hole drill bit

Info

Publication number: CN215256050U
Application number: CN202121687394.4U
Authority: CN
Inventors: 关江华
Original assignee: Zhuzhou Huaqiang Cemented Carbide Tools Co ltd
Current assignee: Zhuzhou Huaqiang Cemented Carbide Tools Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-21
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a high-efficiency down-the-hole drill bit, which comprises a protective sleeve, wherein a connecting column is arranged inside the protective sleeve, one end of the connecting column is provided with a drill bit, the upper surface of the drill bit is provided with a drilling surface, the surface of the drilling surface is provided with a plurality of drilling teeth, two sides of the drilling surface are provided with edge grooves, the inside of the edge groove is provided with an ash removal groove, the bottom of the drill bit is provided with a threaded groove, and the middle position of the threaded groove is provided with an ash removal groove; the utility model provides a drill bit structure when can dismantle through the structure of the protective sheath, spliced pole and the drill bit that set up to the brill tooth in its middle part can be changed, can carry out used repeatedly, and when structural damage, only the part of replacement damage can continue to use, and bore the tooth and be shaft-like structure, when using, the condition that the brill tooth dropped can not appear, and the structure is comparatively stable.

Description

High-efficient down-the-hole drill bit

Technical Field

The utility model relates to a down-the-hole drill bit field specifically is a high-efficient down-the-hole drill bit.

Background

The down-the-hole drill bit is generally used for operations such as drilling holes in the land or wall, is mostly applied to mining industry or building industry, and the end face design form adopted by the down-the-hole drill bit at present mainly has four types: namely, an end-face convex type, an end-face planar type, an end-face concave type and an end-face deep concave central type. The hard alloy is mainly selected from spherical teeth, elastic teeth or a tooth distribution mode shared by the spherical teeth and the elastic teeth. The existing down-the-hole drill bit has certain problems:

the existing down-the-hole drill bit is usually of an integrally formed fixing structure, when the down-the-hole drill bit is used for a long time, dust is easily accumulated in the down-the-hole drill bit, when the dust is excessively accumulated, an ash cleaning groove in the down-the-hole drill bit easily loses the ash cleaning function, and the dust is scattered in use, so that certain use problems exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient down-the-hole drill bit to solve the inside condition that has the deposition of integrated into one piece's down-the-hole drill bit, when the deposition is too much, lead to the deashing groove to lose the problem of deashing effect easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-efficient down-the-hole drill bit, includes the protective sheath, the inside spliced pole of having seted up of protective sheath, the one end of spliced pole is provided with the drill bit, the drilling surface has been seted up to the upper surface of drill bit, a plurality of brill teeth have been seted up on the surface of drilling surface, the limit groove has been seted up to the both sides of drilling surface, the deashing groove has been seted up to the inside in limit groove, the thread groove has been seted up to the bottom of drill bit, the ash discharge groove has been seted up to the middle part position in thread groove.

Preferably, the welding of the one end of spliced pole has the threaded rod, the inside of protective sheath is seted up with threaded rod assorted screw thread notch, thread groove and threaded rod phase-match.

Preferably, the two ash removal grooves are of arc structures and intersect at the ash discharge groove, and the two ash removal grooves are communicated with the ash discharge groove.

Preferably, the drill tooth includes middle part and avris two parts, middle part the drill tooth is the body of rod that runs through, the other end welding of the body of rod has threaded connection's bolt, avris the drill tooth welds in the drill face surface.

Preferably, the drill bit is of an elliptic spherical structure, the surface of the drill bit is smooth, and the outer surfaces of the protective sleeve and the connecting column are provided with connecting notches.

Preferably, the material of drill bit, protective sheath and spliced pole is stainless steel material, the avris to the drill bit is run through to the notch of limit groove.

Compared with the prior art, the beneficial effects of the utility model are that:

through the protective sheath that sets up, the structure of spliced pole and drill bit, a drill bit structure when dismantling is provided, and the brill tooth in its middle part can be changed, can carry out used repeatedly, when structural damage, only the part of replacement damage can continue to use, and bore the tooth and be shaft-like structure, when using, the condition that the brill tooth dropped can not appear, the structure is comparatively stable, and convenient clearance can all be carried out in its inside deashing groove and ash discharge groove, moreover, the steam generator is simple in structure, and certain beneficial effect is possessed.

Drawings

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

fig. 2 is an exploded view of the present invention;

FIG. 3 is a top view of the drill bit of the present invention;

fig. 4 is a bottom view of the drill of the present invention.

In the figure: 10-a protective sheath; 11-a connecting column; 12-a drill bit; 13-drilling surface; 14-drilling teeth; 15-side groove; 16-a threaded rod; 17-a deashing groove; 18-thread groove; 19-bolt; 110-ash chute.

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.

Referring to fig. 1-4, a high efficiency down-the-hole drill bit includes a protective casing 10.

The protective sleeve 10 is internally provided with a connecting column 11, one end of the connecting column 11 is provided with a drill bit 12, the upper surface of the drill bit 12 is provided with a drill face 13, the surface of the drill face 13 is provided with a plurality of drill teeth 14, two sides of the drill face 13 are provided with side grooves 15, the inside of the side grooves 15 is provided with a dust removing groove 17, the bottom of the drill bit 12 is provided with a threaded groove 18, and the middle position of the threaded groove 18 is provided with a dust removing groove 110.

Wherein, one end of the connecting column 11 is welded with a threaded rod 16, a threaded notch matched with the threaded rod 16 is formed in the protective sleeve 10, a threaded groove 18 is matched with the threaded rod 16, and the connecting column 11, the protective sleeve 10 and the drill bit 12 are connected in a threaded mode;

the two ash removing grooves 17 are communicated with the ash discharging groove 110, and the middle position of the connecting column 11 is provided with a notch communicated with the ash discharging groove 110 and used for cleaning and clearing dust;

the drill teeth 14 comprise a middle part and a side part, the middle drill teeth 14 are penetrating rod bodies, bolts 19 in threaded connection are welded at the other ends of the rod bodies, the middle drill teeth 14 are main contact equipment and are easy to damage in use, the structure is changed into a detachable bolt 19 and a rod body structure, disassembly is convenient, and the side drill teeth are welded on the surface of the drill face 13;

wherein, the drilling surface 13 is oval spherical surface structure, and the surface of drilling surface 13 is smooth, and the connection notch has all been seted up to the surface of protective sheath 10 and spliced pole 11, and the material of drill bit 12, protective sheath 10 and spliced pole 11 is stainless steel material, and the notch of limit groove 15 runs through to the avris of drill bit 12.

The working principle is as follows: when using, install spliced pole 11 on machinery can, if the damage appears, can be directly unpack spliced pole 11, protective sheath 10 and drill bit 12 apart, and can dismantle the inboard bolt 19 of drill bit 12, conveniently clear up its inner structure, and can clear up the dust in ash discharge groove 110 and ash removal groove 17 inside, when the damage appears in the structure, the structure that the direct replacement damaged can continue to use, it is comparatively convenient to operate, certain beneficial effect possesses.

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.

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. A high efficiency down-the-hole drill bit comprising a protective casing (10), characterized in that: the utility model discloses a dust removing protective sleeve, including protective sheath (10), spliced pole (11) have been seted up to inside having seted up of protective sheath (10), the one end of spliced pole (11) is provided with drill bit (12), drilling surface (13) have been seted up to the upper surface of drill bit (12), a plurality of brill teeth (14) have been seted up on the surface of drilling surface (13), limit groove (15) have been seted up to the both sides of drilling surface (13), deashing groove (17) have been seted up to the inside of limit groove (15), thread groove (18) have been seted up to the bottom of drill bit (12), ash discharging groove (110) have been seted up to the middle part position of thread groove (18).

2. A high efficiency down-the-hole drill bit as defined in claim 1, wherein: the welding of the one end of spliced pole (11) has threaded rod (16), the inside of protective sheath (10) is seted up with threaded rod (16) assorted screw thread notch, thread groove (18) and threaded rod (16) phase-match.

3. A high efficiency down-the-hole drill bit as defined in claim 1, wherein: ash removal groove (17) are the arc structure, two ash removal groove (17) intersect in ash chute (110) department, two ash removal groove (17) all communicate with ash chute (110).

4. A high efficiency down-the-hole drill bit as defined in claim 1, wherein: the drill teeth (14) comprise a middle part and an edge side two part, the middle part is the rod body which is penetrated by the drill teeth (14), the other end of the rod body is welded with a bolt (19) which is connected with a thread, and the edge side is welded on the surface of the drill face (13).

5. A high efficiency down-the-hole drill bit as defined in claim 1, wherein: the drill face (13) is of an elliptic spherical structure, the surface of the drill face (13) is smooth, and the outer surfaces of the protective sleeve (10) and the connecting column (11) are provided with connecting notches.

6. A high efficiency down-the-hole drill bit as defined in claim 1, wherein: the material of drill bit (12), protective sheath (10) and spliced pole (11) is stainless steel material, the avris to drill bit (12) is run through to the notch of limit groove (15).