CN203463023U

CN203463023U - Recoil type streamline-shaped rock drilling drill bit

Info

Publication number: CN203463023U
Application number: CN201320563791.XU
Authority: CN
Inventors: 方新军
Original assignee: WUXUE CHANGJIANG TOOLS Co Ltd
Current assignee: WUXUE CITY CHANGJIANG TOOLS CO., LTD.
Priority date: 2013-09-12
Filing date: 2013-09-12
Publication date: 2014-03-05
Anticipated expiration: 2023-09-12

Abstract

The utility model relates to rock drilling utility class, and provides a recoil type streamline-shaped rock drilling drill bit. The recoil type streamline-shaped rock drilling drill bit is provided with a pants body , wherein a blind hole which is open downward is formed in the pants body , a threaded hole is formed in the lower section of the blind hole, a head part with a conical surface is arranged at the upper end of the pants body , most part of the middle of an end surface of the head part is a plane, a plurality of arc-shaped grooves are formed in the periphery of the head part, a plurality of inclined holes are formed in the conical surface of the head part, the inclined holes and the arc-shaped grooves are staggered and arranged alternately, a ball head alloy tooth is embedded in each inclined hole, 1-3 circles are opened on the plane of the head part, 3-6 perpendicular holes are formed in each circle, and a conical head alloy tooth is embedded in each perpendicular hole. The recoil type streamline-shaped rock drilling drill bit is characterized in that three uniformly distributed and mutually communicated slag discharge grooves are formed in the end surface of the head part, at least one end of each slag discharge groove is communicated with one arc-shaped groove, a through hole is formed in each slag discharge groove and communicated with the blind hole in the pants body , and 1-3 recoil holes are formed in the upper part side wall of the pants body and communicated with the blind hole in the pants body . The recoil type streamline-shaped rock drilling drill bit has good slag discharge performance, so that the rock drilling excavation efficiency of the drill bit is improved, and the drill bit is particularly suitable for excavation of hard rocks.

Description

A kind of backpulsing streamlined rock drill bit

Technical field

The utility model relates to drilling tool class, especially a kind of backpulsing streamlined rock drill bit.

Background technology

At present, the widely used rock drill bit in drilling engineering that cuts into a mountain has trousers body, its head is embedded with Internal and external cycle carbide button, the slagging structure of its head mainly contains plane, concave shape, convex, dark recessed middle heart-shaped four kinds of structure designs, and be provided with ，Gai limbers, limbers and mainly adopt symmetrical center and side mode.These four kinds of typical structure designs, have the limitation of its use.Flat design wide adaptability, major defect is that rate of penetration is relatively slow; Concave design is good in general middle incompetent bed result of use, but is not suitable with competent bed; Convex-surface type design election war is that rate of penetration is fast, but drill bit centering weak effect is not suitable with the exigent occasion of the position degree in hole is being used; Dark protruding Center is only adapted to use and have good effect at soft formation.And the bore bit deslagging effect of four kinds of forms is all undesirable, thereby affected its rock drilling drivage efficiency.

Summary of the invention

It is undesirable that the purpose of this utility model will solve existing rock drill bit deslagging effect exactly, affects the problem of rock drilling drivage efficiency, and a kind of backpulsing streamlined rock drill bit is provided.

Concrete scheme of the present utility model is: for existing rock drill bit, improve, it has trousers body, in trousers body, be provided with the blind hole that Open Side Down, the hypomere of blind hole is screwed hole, the upper end of trousers body is the head with the conical surface, head end portion broad in the middle is plane, in head surrounding, be shaped with some deep-slotted chip breakers, on the head conical surface, have some inclined holes, inclined hole and the deep-slotted chip breaker alternate layout that misplaces, in each inclined hole, be embedded with bulb carbide button, in the plane of head, have 1-3 circles, 3-6 upright openings of every circle, in each upright opening, be embedded with conehead carbide button, it is characterized in that: the ash pit that has three uniform and mutual perforations in head end, every ash pit has at least one end to be communicated with a deep-slotted chip breaker, in every ash pit, have a through hole and be communicated with the blind hole in trousers body, and in trousers body upper portion side wall, have 1-3 recoil holes and be communicated with the blind hole in trousers body.

The diameter of the carbide button of bulb described in the utility model is greater than the diameter of conehead carbide button.

Three ash pits described in the utility model on head are " Y " shape or " △ " shape is arranged, and ash pit two side is designed for streamlined.

Recoil hole in the body of trousers described in the utility model upper portion side wall is for being tilted to lower layout.

The utility model is due to the streamlined ash pit that has adopted three to interpenetrate, deslagging is smooth and easy in time, and has adopted recoil hole, the aspiration of negative pressure when flushing while facilitating water deslagging and strength deslagging, thereby further improved deslagging effect, finally improved rock drilling drivage efficiency of the present utility model.

The utility model design is ingenious, simple in structure, and improving cost is low, greatly improves rock drilling drivage efficiency high.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model structure one (removing carbide button);

Fig. 2 is the top view of the utility model structure one (removing carbide button);

Fig. 3 is the left sectional view of the utility model structure one (removing carbide button);

Fig. 4 is the front view (removing all carbide buttons in figure) of the utility model structure two;

Fig. 5 is the top view (removing all carbide buttons in figure) of the utility model structure two;

Fig. 6 is the left sectional view of the utility model structure two;

Fig. 7 is the A-A view in Fig. 5.

In figure: 1-trousers body, 2-recoil hole, 3-head, 4-conical surface, 5-deep-slotted chip breaker, 6-inclined hole, 7-plane, 8-△ type ash pit, 9-upright opening, 10-Y type ash pit, 11-bulb carbide button, 12-conehead carbide button, 13-through hole, 14-blind hole, 15-screwed hole.

The specific embodiment

Example 1: referring to Fig. 1, 2, 3, the utlity model has trousers body 1, in trousers body 1, be provided with the blind hole 14 that Open Side Down, the hypomere of blind hole 14 is screwed hole 15, the upper end of trousers body 1 is the head 3 with the conical surface 4, head 3 end face portions broad in the middle are plane 7, in head 3 surroundings, be shaped with nine deep-slotted chip breakers 5, on the head conical surface, have nine inclined holes 6, inclined hole 6 and the alternate layout of deep-slotted chip breaker 5 dislocation, in each inclined hole 6, be embedded with bulb carbide button 11, on the end face of head 3, have two circle upright openings, wherein inner ring has 3 upright openings, there are six upright openings 9 outer ring, in each upright opening 9, be embedded with conehead carbide button 12, it is characterized in that: in header planes, have the ash pit 8 that three uniform and mutual perforations are △, every ash pit two side is designed for streamlined, the two ends of every ash pit cross and are communicated with a deep-slotted chip breaker 5, in every ash pit, have the blind hole 14 that a through hole 13 is communicated with in trousers body 1, and in trousers body 1 upper portion side wall, have the blind hole 14 that 1 recoil hole 2 is communicated with in trousers body 1.

The diameter of the carbide button of bulb described in the utility model 11 is greater than the diameter of conehead carbide button 12.

Recoil hole 2 in the body of trousers described in the utility model 1 upper portion side wall is for being tilted to lower layout (certainly also can horizontal arrangement).

Example 2: referring to Fig. 4, 5, 6, 7, the utlity model has trousers body 1, in trousers body 1, be provided with the blind hole 14 that Open Side Down, the hypomere of blind hole 14 is screwed hole 15, the upper end of trousers body 1 is the head 3 with the conical surface, head 3 end face portions broad in the middle are plane 7, in head surrounding, be shaped with six deep-slotted chip breakers, on the head conical surface, have six inclined holes, inclined hole and the deep-slotted chip breaker alternate layout that misplaces, in each inclined hole, be embedded with bulb carbide button 11, in the plane 7 of head, have a circle, totally three upright openings 9, in each upright opening 9, be embedded with conehead carbide button 12, it is characterized in that: in head end, have the ash pit 10 that three uniform and mutual perforations are y-type structure, every ash pit two side is designed for streamlined, every ash pit has one end to be communicated with a deep-slotted chip breaker 5, in every ash pit, have the blind hole 14 that a through hole 13 is communicated with in trousers body, and in trousers body upper portion side wall, have three recoil holes and be communicated with the blind hole 14 in trousers body.

Recoil hole 2 in the body of trousers described in the utility model 1 upper portion side wall is for being tilted to lower layout.

Claims

1. a backpulsing streamlined rock drill bit, there is trousers body, in trousers body, be provided with the blind hole that Open Side Down, the hypomere of blind hole is screwed hole, the upper end of trousers body is the head with the conical surface, head end portion broad in the middle is plane, in head surrounding, be shaped with some deep-slotted chip breakers, on the head conical surface, have some inclined holes, inclined hole and the deep-slotted chip breaker alternate layout that misplaces, in each inclined hole, be embedded with bulb carbide button, in the plane of head, have 1-3 circles, 3-6 upright openings of every circle, in each upright opening, be embedded with conehead carbide button, it is characterized in that: the ash pit that has three uniform and mutual perforations in head end, every ash pit has at least one end to be communicated with a deep-slotted chip breaker, in every ash pit, have a through hole and be communicated with the blind hole in trousers body, and in trousers body upper portion side wall, have 1-3 recoil holes and be communicated with the blind hole in trousers body.

2. a kind of backpulsing streamlined rock drill bit according to claim 1, is characterized in that: the diameter of described bulb carbide button is greater than the diameter of conehead carbide button.

3. a kind of backpulsing streamlined rock drill bit according to claim 1, is characterized in that: three ash pits on described head are " Y " shape or " △ " shape is arranged, and ash pit two side is designed for streamlined.

4. a kind of backpulsing streamlined rock drill bit according to claim 1, is characterized in that: the recoil hole in described trousers body upper portion side wall is for being tilted to lower layout.