CN205577856U - Down --hole drill bit - Google Patents
Down --hole drill bit Download PDFInfo
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- CN205577856U CN205577856U CN201620366820.7U CN201620366820U CN205577856U CN 205577856 U CN205577856 U CN 205577856U CN 201620366820 U CN201620366820 U CN 201620366820U CN 205577856 U CN205577856 U CN 205577856U
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- powder output
- output slot
- connecting rod
- bit body
- drill bit
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Abstract
The utility model discloses a down - -hole drill bit, its technical scheme main points are bit body and connecting rod including a body coupling, the bit body is coaxial cylinder with the connecting rod, the connecting rod is inside hollow structure, it mentions the air vent to be equipped with the ball on the bit body, the bit body is including top surface and side, be equipped with a plurality of main powder grooves on the side, be equipped with the back taper inclined plane that is used for the transition between top surface and side, it goes out the powder groove to be equipped with a plurality of and main the assistance that the powder groove is linked together on the back taper inclined plane, it distributes along the central circumference of bit body to assist the powder groove, assist setting up of powder groove and accelerateed the speed of arranging the powder, the accumulational problem of rock sediment has been improved.
Description
Technical field
This utility model relates to down-the-hole drilling tool field, particularly to a kind of down-the-hold drill bit.
Background technology
Before hidden hole drilling is engineering explosion, for the equipment of carry out holing at rock (blasting charge in the hole being drilled), down-the-hold drill bit is mainly used for hitting rock in the borehole.
At present, the down-the-hold drill bit on market mainly includes bit body and connecting rod, and bit body is provided with powder output slot, venthole and button, their powder output slot is generally located in the side of bit body, row's powder speed is slow, it is easy to occurring that rock slag muck amasss problem, rock slag muck amasss and arises that rock slag repeats the phenomenon crushed.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is the down-the-hold drill bit providing a kind of row's powder effective.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of down-the-hold drill bit, including the bit body integrally connected and connecting rod, bit body and connecting rod are coaxial cylinder, connecting rod is boring structure, bit body is provided with button and passage, bit body includes end face and side, side is provided with some main powder output slots, the back taper inclined-plane for transition it is provided with between end face and side, back taper inclined-plane is provided with the auxiliary powder output slot that some and main powder output slot is connected, and auxiliary powder output slot is distributed along bit body center circumferential.
By above-mentioned setting, the back taper inclined-plane for transition it is provided with between end face and side, powder output slot is located on back taper inclined-plane, this setting achieves output rock slag on end face can directly arrive powder output slot, need not rock slag just to be made to arrive powder output slot by the mobile of bit body, powder output slot on intermediate incline accelerates the rock slag velocity of discharge, and avoids owing to discharging the repetition Fragmentation Phenomena making rock slag muck long-pending slowly and to cause.The setting of button is for fractured rock, and passage is passing through for gases at high pressure.
This utility model is further arranged to: button is distributed in end face and back taper inclined-plane.
By technique scheme, arranging button, the power making bit body be subject to is distributed in these button, in order to fractured rock, first the button on end face touches rock, gets out a broken path, button on inclined-plane can widen broken path further, and this setting accelerates the broken of rock.
This utility model is further arranged to: the button on back taper inclined-plane is symmetrically distributed in the both sides of auxiliary powder output slot.
By technique scheme, button is distributed in the both sides of auxiliary powder output slot, is that the rock slag that the button on back taper inclined-plane crushes can directly arrive auxiliary powder output slot, accelerates the discharge of rock slag.
This utility model is further arranged to: passage is distributed in end face and side, and end face and side are distributed with two passages, and passage is internal to be communicated with inside connecting rod.
By technique scheme, the inside of passage is identical with the inside of connecting rod, and the gases at high pressure passed through inside connecting rod are discharged by passage, it is possible to by the blowout boring of rock slag.
This utility model is further arranged to: the passage on side is distributed in main powder output slot.
By technique scheme, the velocity of discharge arranged in order to accelerate rock slag of powder output slot, passage is distributed in main powder output slot, and when there being rock slag in powder output slot, the gases at high pressure that steam vent is discharged will be by the blowout boring of rock slag.
This utility model is further arranged to: back taper inclined-plane is 30 ° with the angle of horizontal direction.
By technique scheme, the back taper inclined-plane that this angle is formed is capable of the button on auxiliary powder output slot, and back taper inclined-plane that is discharged to rapidly of rock slag and reaches higher work efficiency when fractured rock, so it is reasonable to design this angle changing rate.
This utility model is further arranged to: main powder output slot and auxiliary powder output slot cross section are circular arc, and the width of main powder output slot is more than the width of auxiliary powder output slot.
Pass through technique scheme, the rock slag that the width of main powder output slot is that by auxiliary powder output slot more than the width of auxiliary powder output slot can be all introduced in main powder output slot, circular arc inherently has certain radian, there are not corner angle, rock slag just can be made to be accessible to auxiliary powder output slot, it is to avoid there are corner angle and make part rock slag cannot be introduced into the phenomenon of auxiliary powder output slot.
This utility model is further arranged to: connecting rod is internally threaded.
By technique scheme, connecting rod is for being connected with beater mechanism by down-the-hold drill bit, and the setting of screw thread enables it to realize firm connection and detachable.
This utility model is further arranged to: bit body is hard alloy with the material of connecting rod.
By technique scheme, the most all there is due to rock bigger hardness, boring procedure can produce high temperature, so needing the hardness of bit body more greatly, and also high temperature resistant, and alloy material just has these features.
In sum, what this utility model in contrast to prior art has the beneficial effect that the setting of powder output slot on the back taper inclined-plane of bit body, the velocity of discharge making rock slag is rapid, also avoid the phenomenon repeating to crush, and passage is located in powder output slot, accelerate rock slag to discharge outside boring, and this down-the-hold drill bit also has higher hardness, the most high temperature resistant.
Accompanying drawing explanation
Fig. 1 is the main TV structure figure of embodiment；
Fig. 2 is the upper TV structure figure of embodiment；
Fig. 3 is the lower TV structure figure of embodiment.
Reference: 1, bit body；2, connecting rod；3, end face；4, side；5, back taper inclined-plane；6, main powder output slot；7, auxiliary powder output slot；8, button；9, passage；10, screw thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Down-the-hold drill bit in Fig. 1, it is made up of with connecting rod 2 bit body 1 integrally connected, bit body 1 is coaxial cylinder with connecting rod 2, bit body 1 side 4 is provided with main powder output slot 6, the back taper inclined-plane 5 for transition it is provided with between the side 4 of bit body 1 and end face 3, back taper inclined-plane 5 is 30 ° with the angle of horizontal plane, back taper inclined-plane 5 is provided with auxiliary powder output slot 7, auxiliary powder output slot 7 is connected with main powder output slot 6, auxiliary powder output slot 7 is circular arc with main powder output slot 6 cross section, and the width of main powder output slot 6 is more than the width of auxiliary powder output slot 7, two passages 9 are positioned at main powder output slot 6, and on end face 3, it also has been provided with two passages 9, end face 3 with back taper inclined-plane 5 are additionally provided with the button 8 of fractured rock.
In use, connecting rod 2 is connected with the beater mechanism of hidden hole drilling, the piston impact bit body 1 of beater mechanism, button 8 on bit body 1 will fractured rock by the effect of power, rock slag the most directly arrives main powder output slot 6 by auxiliary powder output slot 7, and rock slag will be by the rock slag blowout boring of part by the gases at high pressure in passage 9, passage 9 during main powder output slot 6.
Can be seen that in fig. 2, two passages 9 on end face 3 are corresponding with the position of auxiliary powder output slot 7, on end face 3, the distributing position of button 8 is as shown in FIG., and the button 8 on back taper inclined-plane 5 is distributed in the both sides of auxiliary powder output slot 7, four auxiliary powder output slot 7 both sides are divided into and are furnished with eight button 8, button 8 on end face 3 can first get out a paths, the broken rock slag of button 8 on end face 3 can be discharged by auxiliary powder output slot 7, and the button 8 on back taper inclined-plane 5 can widen path, the broken rock slag of button 8 on back taper inclined-plane 5 can be discharged by auxiliary powder output slot 7 and main powder output slot 6, row's powder is rapid.
In fig. 3 it can be seen that be provided with screw thread 10 in connecting rod 2, connecting rod 2 is linked together by screw thread 10 with beater mechanism, it is achieved that fastening and dismountable connection.
Secondly, bit body 1 is hard alloy with the material of connecting rod 2, and in conjunction with producing actual selection 22SiMnCr2Mo steel, the most high temperature resistant, hardness is big.
The above is only exemplary embodiment of the present utility model, and not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.
Claims (9)
1. a down-the-hold drill bit, including the bit body (1) integrally connected and connecting rod (2), bit body (1) is coaxial cylinder with connecting rod (2), connecting rod (2) is boring structure, bit body (1) is provided with button (8) and passage (9), bit body (1) includes end face (3) and side (4), side (4) is provided with some main powder output slots (6), it is characterized in that: between end face (3) and side (4), be provided with the back taper inclined-plane (5) for transition, back taper inclined-plane (5) is provided with the auxiliary powder output slot (7) that some and main powder output slot (6) is connected, auxiliary powder output slot (7) is distributed along bit body (1) center circumferential.
Down-the-hold drill bit the most according to claim 1, is characterized in that: button (8) is distributed in end face (3) and back taper inclined-plane (5).
Down-the-hold drill bit the most according to claim 2, is characterized in that: the button (8) on back taper inclined-plane (5) is symmetrically distributed in the both sides of auxiliary powder output slot (7).
Down-the-hold drill bit the most according to claim 1, it is characterized in that: passage (9) is distributed in end face (3) and side (4), being distributed with two passages (9) on end face (3) and side (4), passage (9) is internal to be communicated with connecting rod (2) inside.
Down-the-hold drill bit the most according to claim 4, is characterized in that: the passage (9) on side (4) is distributed in main powder output slot (6).
Down-the-hold drill bit the most according to claim 1, is characterized in that: back taper inclined-plane (5) are 30 ° with the angle of horizontal direction.
Down-the-hold drill bit the most according to claim 1, is characterized in that: main powder output slot (6) and auxiliary powder output slot (7) cross section are circular arc, and the width of main powder output slot (6) is more than the width of auxiliary powder output slot (7).
Down-the-hold drill bit the most according to claim 1, is characterized in that: connecting rod (2) is internally threaded (10).
Down-the-hold drill bit the most according to claim 1, is characterized in that: bit body (1) is hard alloy with the material of connecting rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366820.7U CN205577856U (en) | 2016-04-26 | 2016-04-26 | Down --hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366820.7U CN205577856U (en) | 2016-04-26 | 2016-04-26 | Down --hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205577856U true CN205577856U (en) | 2016-09-14 |
Family
ID=56861728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620366820.7U Active CN205577856U (en) | 2016-04-26 | 2016-04-26 | Down --hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205577856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166933A (en) * | 2018-02-07 | 2018-06-15 | 吉林大学 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
-
2016
- 2016-04-26 CN CN201620366820.7U patent/CN205577856U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166933A (en) * | 2018-02-07 | 2018-06-15 | 吉林大学 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 318058 Sishui and Tangshangcun, Jinqing Town, Luqiao District, Taizhou City, Zhejiang Province Patentee after: Zhejiang Planka Brazing Tool Co., Ltd. Address before: 318058 Sishui and Tangshangcun, Jinqing Town, Luqiao District, Taizhou City, Zhejiang Province Patentee before: Zhejiang Pulanka Rock Tools Co., Ltd. |