CN219974412U - Rock drill bit - Google Patents

Abstract

The utility model provides a rock drilling bit, and belongs to the technical field of bits. The drill bit solves the problem of low chip removal efficiency of the drill bit in the prior art. The rock drill bit comprises a drill body with a connecting end and a drilling end, wherein a boss is arranged in the middle of the drilling end face of the drill body, a plurality of protruding portions are arranged on the edge of the drilling end face along the circumferential direction, ball teeth are respectively arranged on the boss and the protruding portions, a diversion trench surrounding the boss is formed between the boss and the protruding portions, a liquid outlet which is located at the edge of the drilling end face and communicated with the diversion trench is formed between every two adjacent protruding portions, and a liquid through hole is formed in the diversion trench. The utility model has the advantage of improving the chip removal efficiency of the drill bit.

Description

Rock drill bit

Technical Field

The utility model belongs to the technical field of drill bits, and relates to a rock drill bit.

Background

The drill bit is a drilling tool widely applied to the scenes such as stone fields, mineral exploitation, urban construction and the like, for example, chinese patent literature discloses a rock drilling device (application number: 202110437690.7), the drilling device comprises a drill bit and a drill rod, wherein a tool withdrawal groove is formed in the drill bit, a through hole is formed in the tail end of the drill bit, the through hole comprises an internal thread section, the top end of the drill rod is an external thread section, an annular boss is arranged at the tail part of the thread section, the drill rod is in threaded connection with the drill bit, the annular boss is propped against the end part of the drill bit, the pretightening force generated when the drill bit is screwed with the thread of the drill rod is generated at the joint part of the annular boss and the end part of the drill bit, the acting surface of the drill bit, which is in threaded connection with the drill rod, for bearing the compressive load is the greatest is located at the tail end of the drill bit, and the rock drilling device has the following defects in the use process: because the cutting of the drill bit is carried out in a hole with narrow space, and the diameters of the drill bit of the rock drilling device along the length direction are almost the same, the escape of the particles is not beneficial to the discharge of the particles when the rock drilling device drills the rock only by means of the escape groove at the end part of the drill bit, so that the working efficiency is affected.

Disclosure of Invention

The object of the present utility model is to solve the above-mentioned problems of the prior art and to provide a rock drill bit. The utility model aims to solve the technical problem of improving the chip removal efficiency of a drill bit.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a rock drill bit, includes the brill body that has the link and bore the end, its characterized in that, the middle part that the end terminal surface was got to the brill body has the boss, bores the edge of getting the end terminal surface and is provided with a plurality of bellying along circumference, be provided with the button respectively on boss and the bellying, and form the guiding gutter that encircles the boss setting between boss and the bellying, all form between every adjacent two bellying and lie in and get the end terminal surface edge and with the leakage fluid dram intercommunication of guiding gutter, be provided with the feed-through hole in the guiding gutter.

The guiding gutter of this rock drill surrounds boss setting and is located between boss and the bellying to the powder particle that the button tooth that makes on boss and the bellying produced when drilling can get into the guiding gutter, and the structure is more reasonable, and the through-hole in the guiding gutter can blowout high-pressure water when drilling, makes the powder particle in the guiding gutter constantly follow the guiding gutter and discharge under the washing of high-pressure water, and in addition all forms the leakage fluid dram that is located to bore end face edge and communicates with the guiding gutter between every adjacent two bellying, makes the powder particle in the guiding gutter discharge from a plurality of different directions simultaneously, thereby strengthen the chip removal ability of guiding gutter greatly, and then improve the chip removal efficiency of drill bit.

In the rock drilling bit, the liquid through holes are multiple, at least one liquid through hole is formed between each protruding portion and each boss, the boss faces the side wall of the liquid through hole and is concave, and the protruding portions face the side wall of the liquid through hole and are concave. The boss and the protruding portion are concave towards the lateral wall of liquid through hole and set up thereby form the position of stepping down for the liquid through hole can be seted up bigger, simultaneously, be provided with a liquid through hole at least between every protruding portion and the boss, make the position of setting up of liquid through hole more reasonable even, thereby liquid through hole spun high-pressure water can wash away the powder in the guiding gutter better, thereby can strengthen the chip removal ability of guiding gutter, and then improve the chip removal efficiency of drill bit.

In the rock drill bit, the boss is the triangular prism, the bellying has three, and three bellying sets up relatively with the three side of boss respectively, the middle part of boss is provided with the constant head tank, the constant head tank for the center of boring the body is eccentric setting, three summit of boss terminal surface is provided with the button respectively, the button one-to-one interval and the joint surrounding constant head tank setting that lie in the boss, wherein two buttons and one of them liquid hole are the same for the distance of constant head tank, and two other liquid holes and another button are the same for the distance of constant head tank. The positioning groove is convenient for the location when changeing the hole, and two buttons and a liquid passing hole that keep away from the constant head tank setting are located same circumference, and two liquid passing holes and a button that are close to the constant head tank setting are located same circumference, and above-mentioned structure makes three liquid passing hole spun high pressure water cover three button and whole guiding gutter on the boss to can strengthen the chip removal ability of guiding gutter, and then improve the chip removal efficiency of drill bit.

In the rock drill bit, the liquid through holes are obliquely arranged from the inlet end to the outlet end. The liquid through holes are obliquely arranged from the inlet end to the outlet end from inside to outside, so that on one hand, the liquid through holes can be prevented from being blocked by powder particles, and on the other hand, the chip flushing and removing effect of high-pressure water sprayed out of the liquid through holes can be enhanced.

In the rock drill bit, the side wall of the drill body is concavely provided with a plurality of junk slots along the circumferential direction of the side wall, two ends of each junk slot extend to two end surfaces of the drill body respectively, and at least three junk slots extend to the liquid discharge ports respectively. The chip groove can receive particles discharged by the guide groove and a part of particles generated by the ball teeth positioned at the edge of the end face of the drilling end during drilling, and the particles in the chip groove can be continuously discharged out of the drill body along the chip groove under the flushing of water flow, so that the chip removing capacity of the drill body during drilling can be further enhanced, and the chip removing efficiency of the drill bit is further improved.

In the rock drill bit, the edge surface of the protruding portion, which is far away from the boss, is in an inclined surface shape, and the protruding portion is obliquely arranged from inside to outside from top to bottom. The protruding portion is far away from the edge surface of boss and is inclined plane setting makes its surface form the guide surface, and a portion of powder that produces when can guiding the drilling gets into the chip groove to discharge the chip groove under the scouring of rivers, thereby further strengthen the chip removal ability of guiding gutter, and then improve the chip removal efficiency of drill bit, in addition, the protruding portion of outer lane is the resistance when the slope setting also can reduce the drill bit drilling.

Compared with the prior art, the rock drill bit has the advantages that: the guiding gutter of this rock drill surrounds boss setting and is located between boss and the bellying to the powder particle that the button tooth that makes on boss and the bellying produced when drilling can get into the guiding gutter, and the structure is more reasonable, and the through-hole in the guiding gutter can blowout high-pressure water when drilling, makes the powder particle in the guiding gutter constantly follow the guiding gutter and discharge under the washing of high-pressure water, and in addition all forms the leakage fluid dram that is located to bore end face edge and communicates with the guiding gutter between every adjacent two bellying, makes the powder particle in the guiding gutter discharge from a plurality of different directions simultaneously, thereby strengthen the chip removal ability of guiding gutter greatly, and then improve the chip removal efficiency of drill bit.

Drawings

Fig. 1 is a schematic perspective view of the present rock drill bit.

Fig. 2 is a schematic top view of the drilling end of the rock drill bit.

Fig. 3 is a schematic side view of the rock drill bit.

In the figure, 1, a drill body; 1a, a connecting end; 1b, drilling the end; 2. a boss; 3. a boss; 4. ball teeth; 5. a diversion trench; 5a, a liquid outlet; 6. a liquid through hole; 7. a positioning groove; 8. chip removal groove.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

1-3, including having link 1a and boring the bit body 1 of getting the end 1b, the bit body 1 bores the middle part that gets the end 1b terminal surface and has boss 2, bores the edge that gets the end 1b terminal surface and is provided with a plurality of bellying 3 along circumference, be provided with button 4 on boss 2 and the bellying 3 respectively, and form the guiding gutter 5 that encircles boss 2 setting between boss 2 and the bellying 3, all form between every adjacent two bellying 3 and be located and bore the end 1b terminal surface edge and with guiding gutter 5 intercommunication's leakage fluid dram 5a, be provided with through liquid hole 6 in the guiding gutter 5. In this embodiment, the liquid through hole 6 is preferably inclined from the inlet end to the outlet end.

Further, referring to fig. 2, the liquid through holes 6 are plural, at least one liquid through hole 6 is disposed between each boss 3 and the boss 2, the side walls of the boss 2 facing the liquid through holes 6 are all concave, and the side walls of the bosses 3 facing the liquid through holes 6 are also all concave.

Still further, referring to fig. 2, the boss 2 is a triangular prism, the three protruding portions 3 are provided with three protruding portions 3, and the three protruding portions 3 are respectively disposed opposite to three sides of the boss 2, a positioning groove 7 is disposed in the middle of the boss 2, the positioning groove 7 is disposed eccentrically with respect to the center of the drill body 1, three vertices of the end face of the boss 2 are respectively provided with the ball teeth 4, the liquid through holes 6 are spaced from the ball teeth 4 disposed on the boss 2 one by one and are disposed around the positioning groove 7 together, wherein the distance between two ball teeth 4 and one of the liquid through holes 6 is the same with the distance between the other two ball teeth 4 and the other ball tooth 4 is the same with the distance between the other two ball teeth 4 and the positioning groove 7.

Still further, referring to fig. 1, 2 and 3, the side wall of the drill body 1 is concavely provided with a plurality of junk slots 8 along the circumferential direction thereof, two ends of the junk slots 8 respectively extend to two end surfaces of the drill body 1, and at least three junk slots 8 respectively extend to the liquid discharge port 5a. The edge surface of the boss 3 far away from the boss 2 is inclined, and is obliquely arranged from inside to outside.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. The utility model provides a rock drill bit, includes and has link (1 a) and bore bit (1 b) and bore bit body (1), its characterized in that, the middle part that bit body (1) bore bit (1 b) terminal surface has boss (2), bores the edge of bit end (1 b) terminal surface along circumference and is provided with a plurality of bellying (3), be provided with button tooth (4) on boss (2) and bellying (3) respectively, and form guiding gutter (5) that encircle boss (2) setting between boss (2) and bellying (3), all form between every adjacent two bellying (3) be located and bore bit end (1 b) terminal surface edge and with guiding gutter (5) intercommunication leakage fluid dram (5 a), be provided with through-liquid hole (6) in guiding gutter (5).

2. A rock drill bit according to claim 1, characterized in that the liquid through holes (6) are provided in plurality, at least one liquid through hole (6) is provided between each protruding portion (3) and the boss (2), the side walls of the boss (2) facing the liquid through holes (6) are all concavely arranged, and the side walls of the protruding portions (3) facing the liquid through holes (6) are also concavely arranged.

3. The rock drill bit according to claim 2, characterized in that the boss (2) is a triangular column, the protruding portions (3) are three, the three protruding portions (3) are respectively opposite to three side faces of the boss (2), a positioning groove (7) is formed in the middle of the boss (2), the positioning groove (7) is eccentrically arranged relative to the center of the drill body (1), the three vertexes of the end face of the boss (2) are respectively provided with the spherical teeth (4), the liquid through holes (6) are arranged at intervals one by one with the spherical teeth (4) located on the boss (2) and jointly surround the positioning groove (7), the distances between two spherical teeth (4) and one of the liquid through holes (6) are the same relative to the positioning groove (7), and the distances between the other two liquid through holes (6) and the other spherical teeth (4) are the same relative to the positioning groove (7).

4. A rock drill bit as claimed in claim 2, characterized in that the through-going openings (6) are arranged inclined from the inlet end to the outlet end.

5. A rock drill bit according to any one of claims 1-4, characterized in that the side wall of the drill body (1) is provided with a number of junk slots (8) recessed in the circumferential direction thereof, both ends of the junk slots (8) extend to both end surfaces of the drill body (1) respectively, and at least three junk slots (8) extend to the drain (5 a) respectively.

6. A rock drill bit as claimed in claim 5, characterized in that the edge surface of the boss (3) facing away from the boss (2) is beveled and inclined from inside to outside.