CN210289635U

CN210289635U - Down-the-hole drill bit for drilling and reaming

Info

Publication number: CN210289635U
Application number: CN201920967736.4U
Authority: CN
Inventors: 蔡永奎
Original assignee: Wuxi Beijiaer Technology Co ltd
Current assignee: Wuxi Beijiaer Technology Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-10
Anticipated expiration: 2029-06-25

Abstract

The utility model belongs to the technical field of the drill bit equipment, especially, be a down-the-hole drill bit for drilling underream, including the drill bit body, be equipped with the breach on the drill bit body, the jack has been seted up on the lateral wall of drill bit body, it has second activity reaming piece to peg graft in the inside of jack, the inner wall fixed connection of breach and drill bit body is passed to the one end of second activity reaming piece, the second activity reaming piece rotate on the surface and be connected with the first activity reaming piece that is located the inside of breach, the top of first activity reaming piece is fixed with first alloy piece, be fixed with second alloy piece on the drill bit body. The utility model discloses a design of breach, when its inside fixed second activity reaming piece or second activity reaming piece of going up, this has so not only satisfied the requirement when drilling, satisfies the requirement of reaming drilling simultaneously, after integrating like this, only needs one set of equipment can accomplish drilling reaming work, has practiced thrift the time, has practiced thrift the cost simultaneously.

Description

Down-the-hole drill bit for drilling and reaming

Technical Field

The utility model relates to a drill bit equipment technical field specifically is a down-the-hole drill bit for drilling underreamed.

Background

At present, the existing drilling and reaming devices are generally separated, and a drilling bit is taken out after a drilling hole and then the reaming device is put in for reaming.

At present, the construction is troublesome and the cost is high.

The combined drill bit for drilling and reaming with high price is available in the market, and the reaming blades can not be folded because the drilling and reaming blades are fixed, or the reaming blades are unfolded or folded through a hydraulic cylinder.

The drill bit has the disadvantages of high cost, complex structure, difficult maintenance and short service life.

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 down-the-hole drill bit for drilling underreamed has solved current drill bit equipment structure complicacy, and equipment is expensive and the shorter problem of life.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a down-the-hole drill bit for drilling reaming, includes the drill bit body, be equipped with the breach on the drill bit body, the jack has been seted up on the lateral wall of drill bit body, the inside grafting of jack has second activity reaming piece, the inner wall fixed connection of breach and drill bit body is passed to the one end of second activity reaming piece, the second activity reaming piece rotate on the surface and be connected with the first activity reaming piece that is located the inside of breach, the top of first activity reaming piece is fixed with first alloy piece, be fixed with second alloy piece on the drill bit body.

As a preferred technical scheme of the utility model, the size of first activity reaming piece and the shape size looks adaptation of breach, the shape of first activity reaming piece is step inclined plane structure.

As a preferred technical scheme of the utility model, first commentaries on classics hole has been seted up to the inside of first activity reaming piece, first commentaries on classics pot head is on the second activity reaming piece.

As an optimal technical scheme of the utility model, first alloy piece and second alloy piece respectively with first activity reaming piece and drill bit body integrated into one piece or direct welded fastening.

As a preferred technical scheme of the utility model, second activity reaming piece surface still can change the hole through the second and rotate the inside of connecting second activity reaming piece at the breach.

As an optimized technical scheme of the utility model, the size of second activity reaming piece and the shape size looks adaptation of breach.

As an optimized technical scheme of the utility model, the top structure of second activity reaming piece is the same or different with the top structure of second activity reaming piece.

As an optimized technical scheme of the utility model, the quantity of breach is three or a plurality of, the quantity of the inside second activity reaming piece of breach or second activity reaming piece changes along with breach quantity change.

(III) advantageous effects

Compared with the prior art, the utility model provides a down-the-hole drill bit for drilling underreamed possesses following beneficial effect:

1. this a down-the-hole drill bit for drilling underreamed through the design of breach, when its inside is fixed to be expanded and draws in reference column or second activity reaming piece in, this requirement when drilling has not only been satisfied like this, satisfies the requirement of reaming drilling simultaneously, after integrating like this, only needs one set of equipment can accomplish drilling underreamed work, has practiced thrift the time, has practiced thrift the cost simultaneously.

2. This a down-the-hole drill for drilling reaming draws in the reference column and fixes first alloy piece and second alloy piece with the top of drill bit body through expanding, like this when carrying out drilling reaming, can effectively strengthen the structural strength who draws in the reference column and with the drill bit body in the expansion to increase of service life.

3. The down-the-hole drill bit for drilling and reaming has the advantages of fewer parts of the whole structure, simple structure, low manufacturing cost of relative materials, high structural strength and long service life.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

fig. 3 is a third schematic structural diagram of the present invention.

In the figure: 1. a drill bit body; 2. a notch; 3. unfolding and folding the positioning column; 4. a jack; 5. a first movable reaming block; 6. a first rotary hole; 7. a first alloy mass; 8. a second alloy mass; 9. a second movable reaming block; 10. and a second rotary hole.

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.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a down-the-hole drill bit for drilling underreamed, including drill bit body 1, be equipped with breach 2 on the drill bit body 1, jack 4 has been seted up on the lateral wall of drill bit body 1, the inside grafting of jack 4 has the expansion to draw in reference column 3, the one end that the expansion was drawn in reference column 3 passes breach 2 and drill bit body 1's inner wall fixed connection, the expansion is drawn in reference column 3 and is rotated on the surface and is connected with the first activity reaming piece 5 that is located breach 2 inside, the top of first activity reaming piece 5 is fixed with first alloy piece 7, be fixed with second alloy piece 8 on the drill bit body 1.

In this embodiment, drill bit body 1 is metal material, and the position size of breach 2 all needs carry out even adaptation according to the size of 1 diameter of drill bit body, encircles and offers.

Specifically, the size of the first movable reaming block 5 is matched with the shape and size of the notch 2, and the shape of the first movable reaming block 5 is a step slope structure.

In this embodiment, the design shape of first activity reaming piece 5 is step inclined plane structure, and such shape structure makes things convenient for drill bit body 1 to expand, and the inner wall of breach 2 is contradicted to first activity reaming piece 5 bottom, and convenient calculation needs the reaming aperture size of drilling like this, and 2 inner walls of breach more can support simultaneously and fixed first activity reaming piece 5, increase structural strength.

Specifically, a first rotating hole 6 is formed in the first movable reaming block 5, and the first rotating hole 6 is sleeved on the unfolding and folding positioning column 3.

In this embodiment, the first movable reaming block 5 is sleeved on the unfolding and folding positioning column 3 through the first rotating hole 6, so that the first movable reaming block 5 rotates, and the rotating angle cannot be separated from the original position in the past.

Specifically, the first alloy block 7 and the second alloy block 8 are respectively integrally formed with the first movable reaming block 5 and the drill bit body 1 or directly welded and fixed.

In this embodiment, the first alloy block 7 and the second alloy block 8 are integrally formed with the first movable reamer 5 and the drill body 1, respectively, so that the first alloy block 7 and the second alloy block 8 are added to the end surface.

Specifically, the surface of the positioning column 3 can be unfolded and folded to be rotatably connected with the second movable reaming block 9 inside the notch 2 through the second rotating hole 10.

In this embodiment, the second movable hole expanding block 9 and the positioning post 3 are different in shape and form, but both meet the structural feature of rotating inside the notch 2.

Specifically, the size of the second movable reaming block 9 is matched with the shape and size of the notch 2.

In this embodiment, the working fixing principle of the second movable reaming block 9 is the same as the rotation fixing principle of the positioning column 3 which is unfolded and folded, and the second movable reaming block 9 is fixed by using the structural characteristics of the second movable reaming block 9 after rotation.

Specifically, the top structure of the second movable reaming block 9 is the same as or different from the top structure of the positioning column 3.

In this embodiment, the top structure of the second movable reaming block 9 is the same as that of the positioning column 3 which is unfolded and folded, i.e. the first alloy block 7 is installed or not shown in the integrated forming diagram, so that the structural strength is increased when drilling and reaming are performed, and the service life is prolonged.

Specifically, the number of the notches 2 is three or more, and the number of the positioning columns 3 or the second movable reaming blocks 9 which are unfolded and folded inside the notches 2 changes along with the change of the number of the notches 2.

In this embodiment, the number of the notches 2 is determined according to the diameter of the drill body 1, and the number of the notches 2 is not limited and is determined according to the actual field requirements.

The utility model discloses a theory of operation and use flow: drill bit body 1 carries out fixed mounting with external hydraulic equipment and is connected, when drilling and expanding, drill bit body 1 both can rotate downwards, rotates the in-process simultaneously, draws in the first activity reaming piece 5 of reference column 3 pivoted through the inside expansion of breach 2 and drills the reaming, then after drilling finishes, directly upwards promote can, the expansion draws in reference column 3 and then drives first activity reaming piece 5 and shrink, need not the reversal and can accomplish work.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A down-the-hole drill bit for drilling and reaming, comprising a bit body (1), characterized in that: the drill bit is characterized in that a notch (2) is formed in the drill bit body (1), a jack (4) is formed in the side wall of the drill bit body (1), an expanding and drawing positioning column (3) is inserted into the jack (4), one end of the expanding and drawing positioning column (3) penetrates through the notch (2) and the inner wall of the drill bit body (1) and is fixedly connected with the inner wall of the drill bit body, a first movable hole expanding block (5) located inside the notch (2) is rotatably connected to the surface of the expanding and drawing positioning column (3), a first alloy block (7) is fixed to the top of the first movable hole expanding block (5), and a second alloy block (8) is fixed to the drill bit body (1).

2. A down-the-hole drill bit for reaming a borehole according to claim 1, wherein: the size of the first movable reaming block (5) is matched with the shape and size of the notch (2), and the shape of the first movable reaming block (5) is of a step slope structure.

3. A down-the-hole drill bit for reaming a borehole according to claim 1, wherein: a first rotating hole (6) is formed in the first movable hole expanding block (5), and the first rotating hole (6) is sleeved on the unfolding and folding positioning column (3).

4. A down-the-hole drill bit for reaming a borehole according to claim 1, wherein: the first alloy block (7) and the second alloy block (8) are integrally formed with the first movable reaming block (5) and the drill bit body (1) or directly welded and fixed.

5. A down-the-hole drill bit for reaming a borehole according to claim 1, wherein: the surface of the unfolding and folding positioning column (3) can also be rotatably connected with a second movable hole expanding block (9) in the notch (2) through a second rotating hole (10).

6. A down-the-hole drill bit for reaming a borehole according to claim 5, wherein: the size of the second movable reaming block (9) is matched with the shape and size of the notch (2).

7. A down-the-hole drill bit for reaming a borehole according to claim 6, wherein: the top structure of the second movable reaming block (9) is the same as or different from that of the unfolding and folding positioning column (3).

8. A down-the-hole drill bit for reaming a borehole according to claim 1, wherein: the number of the notches (2) is three or more, and the number of the unfolding and folding positioning columns (3) or the second movable hole expanding blocks (9) in the notches (2) changes along with the number of the notches (2).