CN206513310U - A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head - Google Patents
A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head Download PDFInfo
- Publication number
- CN206513310U CN206513310U CN201720181938.7U CN201720181938U CN206513310U CN 206513310 U CN206513310 U CN 206513310U CN 201720181938 U CN201720181938 U CN 201720181938U CN 206513310 U CN206513310 U CN 206513310U
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- CN
- China
- Prior art keywords
- drill bit
- drill
- screw
- coal mine
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head, including the second drill bit, screw rod, screw channel and the first drill bit, the bottom of second drill bit is provided with the first drill bit, the bottom of second drill bit is provided with screw rod, and second the central position of drill end be provided with drilling rod preformed groove, the side of second drill bit is provided with preformed hole, and preformed hole is connected with drilling rod preformed groove, the central position of first drill end is provided with screw channel, and screw channel is connected with screw rod, the top of the first drill bit side is provided with the reinforcing bolt cooperated with preformed hole by chain link.The utility model is by being provided with the first drill bit and the second drill bit, and first drill bit diameter be more than the second drill bit diameter, so that after drilling, spiral spiral shell is carried out by the second drill bit and goes out hole, it is not in kelly phenomenon, it is easy to the use of drill bit, reduces the consumption for drill bit, and do not interfere with the progress of work.
Description
Technical field
The utility model is related to bit technique field, specially a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head.
Background technology
Grouting and reinforcing construction has turned into the Main Means that the complicated complicated roadway in colliery is repaired, and grouting and reinforcing construction is mainly head
Inlet well is first set in coal and rock, is formed after inlet well, Grouting Pipe is installed and carries out slip casting, to recover the complete of country rock
Property, conventional rig is that drill bit is installed in front of drilling rod, and coal and rock is drilled, with the propulsion of rig, drilling rod band
Drill bit to creep into forward, coal and rock powder is discharged outside hole with drilling or by water band portalled outside, ultimately forms drilling, slip casting adds
Solid roadway surrounding rock drilled using conventional drill bit, be particularly when setting deep hole, due to the development in roadway surrounding rock crack,
Often result in hole wall after drilling to collapse, or even a wide range of collapse hole of perforated area so that drill bit and drilling rod are difficult to exit, when hole depth compared with
When big, the drilling rod quantity in drilling is more, can not be taken out after collapse hole, causes to lose brill, loses bar phenomenon seriously, causes serious wave
Take, and be imbedded in the drilling rod in coal and rock and drill bit, very big peace can be caused to the production of Safety of Coal Mine Production, particularly working face
Full hidden danger.
Utility model content
The purpose of this utility model is to provide a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the utility model provides following technical scheme：A kind of anti-collapse hole of coal mine roadway rock-reinforcing
Drill bit, including the second drill bit, screw rod, screw channel and the first drill bit, the bottom of second drill bit are provided with the first drill bit, described
The bottom of two drill bits is provided with screw rod, and the central position of the second drill end is provided with drilling rod preformed groove, and described second bores
The side of head is provided with preformed hole, and preformed hole is connected with drilling rod preformed groove, and the central position of first drill end is set
Screw channel is equipped with, and screw channel is connected with screw rod, the top of the first drill bit side is provided with and preformed hole phase interworking by chain link
The reinforcing bolt of conjunction.
It is preferred that, the surface of the screw rod is provided with the screw thread that screw thread mutual cooperation is provided with screw thread, and the inwall of screw channel
Groove.
It is preferred that, the diameter of first drill bit is more than the diameter of the second drill bit.
It is preferred that, the axis of the drilling preformed groove and screw channel is on same vertical line.
It is preferred that, the junction of first drill bit and the second drill bit is provided with rubber gasket.
Compared with prior art, the beneficial effects of the utility model are：The coal mine roadway rock-reinforcing anti-collapse hole drill head leads to
Cross and the first drill bit and the second drill bit are installed, and diameter of the diameter more than the second drill bit of the first drill bit so that after drilling, by
Second drill bit carries out spiral spiral shell and goes out hole, is not in kelly phenomenon, is easy to the use of drill bit, reduces the consumption for drill bit,
And the progress of work is not interfered with, device is set by being provided with the first drill bit and the second drill bit, and in one end of the first drill bit
Screw channel is equipped with, screw rod is fixed with one end of the second drill bit so that is connected by screw rod with screw channel so that the first drill bit and second
Drill bit is connected, and is easy to the installation of drill bit, dismounting, and one of bit damage need to only change the drill bit of damage, subtract
The waste of few drill bit is easy to use.
Brief description of the drawings
Fig. 1 is structure combination diagram of the present utility model；
Fig. 2 is the first drill bit schematic diagram of the present utility model；
Fig. 3 is the second drill bit schematic diagram of the present utility model；
In figure：The drill bits of 1- second；2- drilling rod preformed grooves；3- preformed holes；4- screw rods；5- screw channels；6- chain links；7- reinforces spiral shell
Bolt；The drill bits of 8- first.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Refer to Fig. 1-3, a kind of embodiment that the utility model is provided：A kind of coal mine roadway rock-reinforcing anti-collapse hole drill
Head, including the second drill bit 1, screw rod 4, the drill bit 8 of screw channel 5 and first, the bottom of the second drill bit 1 are provided with the first drill bit 8, and first bores
First 8 diameter is more than the diameter of the second drill bit 1, when taking bar, and the second drill bit 1 is easy to promote the dust in through hole, and a century is with taking
Bar, will not produce kelly phenomenon, and the bottom of the second drill bit 1 is provided with screw rod 4, and the junction of the first drill bit 1 and the second drill bit 8 is set
Rubber gasket is equipped with, prevents ground and moisture from entering drill bit junction, it is to avoid drill bit internal abrasion is corroded, and extends drill bit
Service life, and the central position on the top of the second drill bit 1 is provided with drilling rod preformed groove 2, drilling preformed groove 2 and screw channel 5
Axis is on same vertical line, is easy to the propulsion of drill bit drilling rod to be on same straight line, is easy to punching, the surface of screw rod 4
Provided with the thread groove that screw thread mutual cooperation is provided with screw thread, and the inwall of screw channel 5, it is easy to the first drill bit 8 and the second drill bit 1
It is connected, and dismounting and change, the side of the second drill bit 1 is provided with preformed hole 3, and preformed hole 3 connects with drilling rod preformed groove 2
Logical, the central position on the top of the first drill bit 8 is provided with screw channel 5, and screw channel 5 is connected with screw rod 4, the top of the side of the first drill bit 8
End is provided with the reinforcing bolt 7 cooperated with preformed hole 3 by chain link 6.
Operation principle：In use, so that being connected by screw rod 4 with screw channel 5 so that the first drill bit 8 is connected with the second drill bit 1
It is fixed, it is easy to the installation of drill bit, is afterwards connected drilling rod with the drilling rod preformed groove 2 on the second drill bit 1, and by reinforcing bolt 7
Drilling will be started after drilling rod fixation.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (5)
1. a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head, including the second drill bit (1), screw rod (4), screw channel (5) and first are bored
Head (8), it is characterised in that：The bottom of second drill bit (1) is provided with the first drill bit (8), the bottom of second drill bit (1)
Screw rod (4) is installed, and the central position on the second drill bit (1) top is provided with drilling rod preformed groove (2), second drill bit
(1) side is provided with preformed hole (3), and preformed hole (3) is connected with drilling rod preformed groove (2), the first drill bit (8) top
Central position is provided with screw channel (5), and screw channel (5) is connected with screw rod (4), and the top of the first drill bit (8) side passes through
Chain link (6) is provided with the reinforcing bolt (7) cooperated with preformed hole (3).
2. a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head according to claim 1, it is characterised in that：The screw rod
(4) surface is provided with the thread groove that screw thread mutual cooperation is provided with screw thread, and the inwall of screw channel (5).
3. a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head according to claim 1, it is characterised in that：Described first bores
The diameter of head (8) is more than the diameter of the second drill bit (1).
4. a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head according to claim 1, it is characterised in that：The drilling is pre-
The axis of groove (2) and screw channel (5) is stayed to be on same vertical line.
5. a kind of coal mine roadway rock-reinforcing anti-collapse hole drill head according to claim 1, it is characterised in that：Described first bores
The junction of head (1) and the second drill bit (8) is provided with rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720181938.7U CN206513310U (en) | 2017-02-28 | 2017-02-28 | A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720181938.7U CN206513310U (en) | 2017-02-28 | 2017-02-28 | A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513310U true CN206513310U (en) | 2017-09-22 |
Family
ID=59868381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720181938.7U Expired - Fee Related CN206513310U (en) | 2017-02-28 | 2017-02-28 | A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206513310U (en) |
-
2017
- 2017-02-28 CN CN201720181938.7U patent/CN206513310U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20180228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |