CN208010286U - A kind of mining button bit - Google Patents
A kind of mining button bit Download PDFInfo
- Publication number
- CN208010286U CN208010286U CN201820519744.8U CN201820519744U CN208010286U CN 208010286 U CN208010286 U CN 208010286U CN 201820519744 U CN201820519744 U CN 201820519744U CN 208010286 U CN208010286 U CN 208010286U
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- CN
- China
- Prior art keywords
- button
- hollow stem
- chip space
- upper crown
- button bit
- Prior art date
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Abstract
The utility model belongs to the technical field of drilling project equipment, it is related to a kind of mining button bit of air rock drill, the button bit includes hollow stem and coronal, the coronal includes upper crown and lower bizet, the upper crown is a round platform, the upper circular diameter of round platform is less than the diameter of hollow stem, and lower circular diameter is more than the diameter of hollow stem, and the lower bizet is smoothly connected upper crown and hollow stem；The upper surface of the upper crown is provided with top button and top outlet inlet, the side of upper crown is symmetrically arranged with two side buttons, the side of the coronal is symmetrical arranged the chip space there are two concave arc shape, chip space is spaced apart with side button, side air-out mouth is provided on one of chip space, the top outlet inlet and side air-out mouth are communicated with the cavity in hollow stem.Button bit provided by the utility model can generate rock the pressure of bigger, make target efficiency higher, meanwhile, the size of chip space is increased, the discharge of powder is more advantageous to.
Description
Technical field
The utility model belongs to the technical field of drilling project equipment, is related to a kind of mining button brill of air rock drill
Head.
Background technology
Air rock drill utilizes the hole of the energy production repetitive shocks of compressed air using compressed air as dynamic medium
Bottom power equipment, compressed air can double as hole flushing medium simultaneously.Hard alloy columnar teeth drill bit (button bit) directly with it is pneumatic
Rock drill connection detritus in a manner of impacting is suitable for exploitation, the probing of various ores.
Existing mining button bit can be divided into "-" type, cross, horseshoe with the structure on its head and shape difference
Type and cone flute profile, wherein cone flute profile is most common structure.Boring flute profile button bit, generally in top setting, there are one top balls
Tooth, side setting there are three or more side button, impact force still shows slightly inadequate to this button bit when in use, and
Chip space is too small, is also unfavorable for the discharge of powder in rock drilling, to influence working efficiency.
Utility model content
The utility model in view of the deficiencies of the prior art, provides a kind of mining button bit of air rock drill, the drill bit
The pressure that bigger can be generated to rock, makes target efficiency higher, meanwhile, the size of chip space is increased, powder is more advantageous to
Discharge.
In order to solve the above technical problems, the purpose of this utility model is achieved by following technical proposals：
A kind of mining button bit, including hollow stem and coronal, the coronal include upper crown and lower bizet, described
Upper crown is a round platform, and the upper circular diameter of round platform is less than the diameter of hollow stem, and lower circular diameter is more than the diameter of hollow stem, under described
Bizet is smoothly connected upper crown and hollow stem；The upper surface of the upper crown is provided with top button and top outlet inlet, crown
The side in portion is symmetrically arranged with two side buttons, and the side of the coronal is symmetrical arranged the chip space there are two concave arc shape, row
Bits slot is spaced apart with side button, side air-out mouth is provided on one of chip space, the top outlet inlet and side air-out mouth are equal
It is communicated with the cavity in hollow stem.
The center of circle of above-mentioned top button and top outlet inlet is located at the same of upper crown upper surface diametrically.
The symmetry axis of above-mentioned symmetrically arranged two side buttons is parallel with the circle center line connecting of top button and top outlet inlet.
The symmetry axis of above-mentioned symmetrically arranged two chip spaces is vertical with the circle center line connecting of top button and top outlet inlet,
The side air-out mouth is located remotely from the chip space of top outlet inlet.
The intersecting arcs of the cancave cambered surface and upper crown lower face of above-mentioned chip space, central angle are 90 °, radius and upper crown
The radius of lower face is identical.
The size of above-mentioned top button is less than side button.
Compared to the prior art the utility model, has the advantages that:
The utility model reduces the quantity of side button, and two symmetrical side buttons, button and rock in rock drilling is only arranged
The contact area of stone becomes smaller, and in the case where power source is constant, button bit can generate rock the pressure of bigger, to make
Obtain target efficiency higher；In addition, due to being provided with less side button, but also the side of button bit can be designed that bigger
Chip space the space of coronal close to half can be arranged to chip space in the present invention, when work also just more
The discharge for being conducive to powder, to improve working efficiency.
Description of the drawings
Fig. 1 is the vertical view of the utility model；
Fig. 2 is the sectional view in the directions A-A in Fig. 1；
Fig. 3 is the front view of the utility model；
Fig. 4 is the vertical view of button bit in the prior art；
Reference numeral：1, hollow stem；2, coronal；3, upper crown；4, lower bizet；5, top button；6, top outlet inlet；
7, side button；8, chip space；9, side air-out mouth.
Specific implementation mode
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1-4：
A kind of mining button bit, including hollow stem 1 and coronal 2, the coronal 2 include upper crown 3 and lower bizet
4, the upper crown 3 is a round platform, and the upper circular diameter of round platform is less than the diameter of hollow stem 1, and lower circular diameter is more than the straight of hollow stem 1
Diameter, the lower bizet 4 are smoothly connected upper crown 3 and hollow stem 1；The upper surface of the upper crown 3 is provided with top button 5 and top
Portion's air outlet 6, the side of upper crown 3 are symmetrically arranged with two side buttons 7, there are two the side of the coronal 2 is symmetrical arranged
The chip space 8 of concave arc shape, chip space 8 are spaced apart with side button 7, and side air-out mouth 9 is provided on one of chip space 8, described
Top outlet inlet 5 and side air-out mouth 9 are communicated with the cavity in hollow stem 1.
Fig. 4 is the vertical view of button bit in the prior art, it can be seen that the side of drill bit is provided with three side buttons 7,
Chip space 8 is arranged between every two side buttons 7, is only capable of accommodating the chip space 8 of three very littles under this layout, on drill bit,
And side button 7 is reduced to two by the utility model, in rock drilling, button and the contact area of rock become smaller, constant in power source
In the case of, button bit can generate rock the pressure of bigger, so that target efficiency higher, the utility model are same
Chip space 8 is arranged between two side buttons 7, size is much larger than the size of chip space in the prior art, at work
It is just more conducive to the discharge of powder, to improve working efficiency
As the preferred of button location layout, the center of circle of above-mentioned top button 5 and top outlet inlet 6 is located in upper crown 3
The same of end face is diametrically.
The symmetry axis of above-mentioned symmetrically arranged two side buttons 7 is flat with the circle center line connecting of top button 5 and top outlet inlet 6
Row.
The symmetry axis of above-mentioned symmetrically arranged two chip spaces 8 hangs down with the circle center line connecting of top button 5 and top outlet inlet 6
Directly, the side air-out mouth 9 is located remotely from the chip space 8 of top outlet inlet 6.
The intersecting arcs of the cancave cambered surface and 3 lower face of upper crown of above-mentioned chip space 8, central angle are 90 °, radius and crown
The radius of 3 lower face of portion is identical.
The size of above-mentioned top button 5 is less than side button 7.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model
Within the scope of.
Claims (6)
1. a kind of mining button bit, including hollow stem (1) and coronal (2), which is characterized in that the coronal (2) includes
Upper crown (3) and lower bizet (4), the upper crown (3) are a round platform, and the upper circular diameter of round platform is less than the diameter of hollow stem (1),
Lower circular diameter is more than the diameter of hollow stem (1), and the lower bizet (4) is smoothly connected upper crown (3) and hollow stem (1)；On described
The upper surface of bizet (3) is provided with top button (5) and top outlet inlet (6), the side of upper crown (3) are symmetrically arranged with two
Side button (7), the side of the coronal (2) are symmetrical arranged the chip space (8) there are two concave arc shape, chip space (8) and side ball
Tooth (7) is spaced apart, and side air-out mouth (9), the top outlet inlet (6) and side air-out mouth are provided on one of chip space (8)
(9) it is communicated with the cavity in hollow stem (1).
2. mining button bit according to claim 1, which is characterized in that the top button (5) and top outlet inlet
(6) the center of circle is located at the same of upper crown (3) upper surface diametrically.
3. mining button bit according to claim 2, which is characterized in that symmetrically arranged two side buttons (7)
Symmetry axis it is parallel with the circle center line connecting of top button (5) and top outlet inlet (6).
4. mining button bit according to claim 2, which is characterized in that symmetrically arranged two chip spaces (8)
Symmetry axis it is vertical with the circle center line connecting of top button (5) and top outlet inlet (6), the side air-out mouth (9) is located remotely from top
On the chip space (8) of portion's air outlet (6).
5. mining button bit according to claim 4, which is characterized in that the cancave cambered surface and crown of the chip space (8)
The intersecting arcs of portion (3) lower face, central angle are 90 °, and radius is identical as the radius of upper crown (3) lower face.
6. mining button bit according to claim 1, which is characterized in that the size of the top button (5) is less than side
Button (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820519744.8U CN208010286U (en) | 2018-04-12 | 2018-04-12 | A kind of mining button bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820519744.8U CN208010286U (en) | 2018-04-12 | 2018-04-12 | A kind of mining button bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208010286U true CN208010286U (en) | 2018-10-26 |
Family
ID=63892739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820519744.8U Active CN208010286U (en) | 2018-04-12 | 2018-04-12 | A kind of mining button bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208010286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519128A (en) * | 2019-01-18 | 2019-03-26 | 沧州格锐特钻头有限公司 | A kind of gear wheel-PDC cutting structure composite drill bit |
-
2018
- 2018-04-12 CN CN201820519744.8U patent/CN208010286U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519128A (en) * | 2019-01-18 | 2019-03-26 | 沧州格锐特钻头有限公司 | A kind of gear wheel-PDC cutting structure composite drill bit |
| CN109519128B (en) * | 2019-01-18 | 2024-02-23 | 沧州格锐特钻头有限公司 | Composite drill bit with cone-PDC cutting structure |
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