CN219795159U

CN219795159U - Screw thread drill bit

Info

Publication number: CN219795159U
Application number: CN202320442746.2U
Authority: CN
Inventors: 王玉刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-10-03
Anticipated expiration: 2033-03-08

Abstract

The utility model discloses a screw drill, comprising: a drill bit magazine body; the drill bit is fixedly arranged at the upper end of one side of the drill bit storage body, a plurality of concave parts are arranged on the circumferential outer surface of the drill bit, the concave parts extend towards the center of the drill bit, and the inclined angle formed between the outer side wall of the concave parts and the outer surface of the drill bit is 6 degrees; the upper end of the recess forms an angle of 35 ° with the drill top wall. Compared with the prior art, the screw thread drill bit improves the tunneling speed of the drill bit in the tunneling process.

Description

Screw thread drill bit

Technical Field

The utility model relates to a screw drill.

Background

In underground engineering projects such as highway tunnels, railway tunnels, underground cave garages and the like, rock mass tunneling is an important process, and a drilling and blasting method is an efficient construction method for rock mass tunneling, so far, the rock mass tunneling is still dominant in the construction of tunnels at home and abroad.

At present, most of underground engineering in China is still constructed by using an artificial method, namely, a traditional pneumatic rock drill is utilized for drilling, along with gradual increase of the construction requirement of the underground engineering, the national importance of construction safety is improved, and effective labor is gradually shortened, a rock drilling trolley becomes necessary engineering equipment for drilling and blasting method construction, but the existing problem of the angle of a drill bit causes slower tunneling speed of the drill bit in the tunneling process.

Therefore, the problem to be solved at present is to provide a method for improving the tunneling speed of the drill bit in the tunneling process.

Disclosure of Invention

The utility model aims to provide a threaded drill bit for improving the tunneling speed of the drill bit in the tunneling process.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a threaded drill bit, comprising:

a drill bit magazine body;

the drill bit is fixedly arranged at the upper end of one side of the drill bit storage body, a plurality of concave parts are arranged on the circumferential outer surface of the drill bit, the concave parts extend towards the center of the drill bit, and the inclined angle formed between the outer side wall of the concave parts and the outer surface of the drill bit is 6 degrees; the upper end of the recess forms an angle of 35 ° with the drill top wall.

Further, a group of first alloy drill bits are arranged between the adjacent concave parts.

Further, the top of the drill bit is also provided with a first embedded groove matched with the embedded alloy drill bit.

Further, the aperture of the first embedded groove is 6 CM to 10CM.

Further, a second embedded groove is arranged near the center of the drill bit.

Further, the aperture of the second embedded groove is 3-8CM.

Further, a drainage groove is formed between the alloy drill bit and the alloy drill bit.

Compared with the prior art, the utility model has the beneficial effects that: the angle of the inclined angle formed by the outer side wall of the concave part and the outer surface of the drill bit is 6 degrees, and the experimental comparison shows that the tooth fixing firmness can be greatly improved, the angle formed by the upper end of the concave part and the top wall of the drill bit is 35 degrees, so that the tunneling speed of the drill bit in the tunneling process is improved to a great extent, and meanwhile, the protection of the inclined side wall of the concave part to the drill bit warehouse body is also improved under the condition of coping with the abrasion of the warehouse body.

Drawings

FIG. 1 is a block diagram of a screw bit according to the present utility model;

FIG. 2 is a cross-sectional view of a screw bit according to the present utility model;

FIG. 3 is a cross-sectional view of a screw bit of the present utility model;

FIG. 4 is a cross-sectional view of a screw bit of the present utility model;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the spirit of the present disclosure will be clearly described in the following drawings and detailed description, and any person skilled in the art, after having appreciated the embodiments of the present disclosure, may make alterations and modifications by the techniques taught by the present disclosure without departing from the spirit and scope of the present disclosure.

The exemplary embodiments of the present utility model and the descriptions thereof are intended to illustrate the present utility model, but not to limit the present utility model. In addition, the same or similar reference numerals are used for the same or similar parts in the drawings and the embodiments.

The terms "first," "second," …, and the like, as used herein, do not denote a particular order or sequence, nor are they intended to limit the utility model, but rather are merely used to distinguish one element or operation from another in the same technical term.

With respect to directional terms used herein, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for purposes of illustration and is not intended to be limiting.

As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.

As used herein, "and/or" includes any or all combinations of such things.

The terms "about," "approximately" and the like as used herein are used to modify any quantitative or positional deviation that could vary slightly without such slight variation or positional deviation altering its nature. In general, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the above mentioned values can be adjusted according to the actual requirements, and are not limited thereto.

Certain words used to describe the utility model will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the utility model.

An embodiment of the present utility model provides a screw drill, comprising:

a drill bit storage body 1, wherein the outer diameter of the drill bit storage body is 39CM;

the drill bit 2, the external diameter of the drill bit is 44.2CM, the drill bit is fixedly arranged at the upper end of one side of the drill bit warehouse body, the other end of the drill bit warehouse body is connected with an underground drilling and tunneling trolley in a threaded connection mode, a plurality of concave parts 3 are arranged on the circumferential external surface of the drill bit, the concave parts 3 extend towards the center of the drill bit, and the angle of inclination angle formed by the external side wall of the concave parts and the external surface of the drill bit is 6 degrees; the upper end of the recess forms an angle of 35 ° with the drill top wall.

Specifically, as the angle of the inclined angle formed by the outer side wall of the concave part 3 and the outer surface of the drill bit is 6 degrees, the tooth fixing firmness can be greatly improved through experimental comparison, and the angle formed by the upper end of the concave part and the top wall of the drill bit is 35 degrees, the tunneling speed of the drill bit in the tunneling process is improved to a great extent, and meanwhile, the protection of the inclined side wall of the concave part on the drill bit warehouse body is also improved under the condition of coping with the abrasion of the warehouse body.

Specifically, a group of first alloy drill bits 4 are further arranged between the adjacent concave parts 3, a first embedded groove 5 matched with the embedded alloy drill bits is further formed in the top of the drill bit, the aperture of the first embedded groove 5 is 6-10CM, a second embedded groove 6 is further formed in the position close to the center of the drill bit, and the aperture of the second embedded groove 6 is 3-8CM.

In addition, it should be mentioned that a drainage groove 7 is provided between the alloy drill bit and the alloy drill bit, one end of the drainage groove is close to the second embedded groove, and the other end of the drainage groove extends to the circumferential outer surface of the drill bit and extends to the side wall of the drill bit.

The foregoing is merely illustrative of the embodiments of this utility model and any equivalent and equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model.

Claims

1. A threaded drill bit, comprising:

a drill bit magazine body;

2. The screw-thread drill of claim 1, wherein a set of first alloy bits are further provided between adjacent recesses.

3. The threaded drill bit of claim 2, wherein the bit top portion is further provided with a first insert pocket for mating with an insert alloy bit.

4. A screw drill according to claim 3, wherein the first insert groove has a bore diameter of 6-10CM.

5. The threaded drill of claim 1, wherein a second insert pocket is further provided proximate the center of the drill.

6. The screw drill of claim 5, wherein the second insert pocket has a bore diameter of 3-8CM.