CN204782767U - Tunnel country rock dowelling jig utensil of preventing collapsing - Google Patents
Tunnel country rock dowelling jig utensil of preventing collapsing Download PDFInfo
- Publication number
- CN204782767U CN204782767U CN201520247793.7U CN201520247793U CN204782767U CN 204782767 U CN204782767 U CN 204782767U CN 201520247793 U CN201520247793 U CN 201520247793U CN 204782767 U CN204782767 U CN 204782767U
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- drill bit
- drilling rod
- hole
- drill
- drilling
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Abstract
The utility model relates to a mine support field discloses a tunnel country rock dowelling jig utensil of preventing collapsing, and it includes first drill bit, second drill bit and drilling rod, the direction of advance of first drill bit orientation drilling is installed the front end of drilling rod, what second drill bit orientation was drilld retreats the direction suit on the drilling rod, the second drill bit with one section distance at the interval between the first drill bit, the external diameter of first drill bit is greater than the external diameter of second drill bit. The utility model discloses simple structure, it is easy and simple to handle, can guarantee the normal clear of drilling, the adverse effect that can prevent the rear from to collapse again the pore pair drilling tool causes.
Description
Technical field
The utility model relates to mine support field, particularly relates to a kind of roadway surrounding rock anti-collapse hole drill tool.
Background technology
Grouting and reinforcing construction is the Main Means that crush roadway is repaired, and is used widely in China's geotechnical engineering field, and particularly for coal mine roadway, grouting and reinforcing construction has become the Main Means that the complicated complicated roadway in colliery is repaired.First grouting and reinforcing construction mainly sets inlet well in coal and rock, after forming inlet well, installs Grouting Pipe and carries out slip casting, recover the integrality of country rock.
In colliery, roadway surrounding rock is mainly sedimentary rock, and sedimentary rock intensity is lower, and coal and rock by geostatic stress, the multiple impact such as to adopt, cause coal petrography body weight cranny development, coal and rock is broken.Conventional rig as shown in Figure 1, mainly install normal drill bit 6 pairs of coal and rock 5 in drilling rod 4 front to hole, along with the propelling of rig, drilling rod 4 creeps into forward with normal drill bit 6, the powder of coal and rock 5 is discharged outside hole or outside water-band is portalled along with the boring of drilling rod 4, finally forms boring.
But, the roadway surrounding rock of grouting and reinforcing adopts conventional drill bit to hole, when setting deep hole especially, because of roadway surrounding rock cranny development, after drilling, often cause hole wall collapse hole, even perforated area collapse hole on a large scale, drill bit and drilling rod is made to be difficult to exit, when hole depth is larger, drilling rod quantity is more, causes that to lose drilling rod phenomenon serious.And the drilling rod lost in coal and rock and drill bit, to Safety of Coal Mine Production, particularly working surface production causes potential safety hazard.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model how to ensure normally carrying out of boring, can prevent again the adverse effect that rear collapse hole causes drilling tool.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of roadway surrounding rock anti-collapse hole drill tool, it comprises the first drill bit, the second drill bit and drilling rod, described first drill bit is arranged on the front end of described drilling rod towards the direction of advance of holing, described second drill bit is sleeved on drilling rod towards the direction of retreat of boring, is spaced a distance between described second drill bit and described first drill bit.
Wherein, the external diameter of described first drill bit is greater than the external diameter of described second drill bit.
Wherein, the rear end of described first drill bit is provided with locating hole, and described first drill bit is arranged on described drilling rod by described locating hole, and described second drill bit is provided with axially extending bore, and described second drill bit is sleeved on described drilling rod by described axially extending bore.
Wherein, the radial direction of described first drill bit is also provided with the first spacing hole communicated with described locating hole, the radial direction of described second drill bit is also provided with the second spacing hole communicated with described axially extending bore, described drilling rod is respectively equipped with the limit spring button matched with described first spacing hole and the second spacing hole.
Wherein, described locating hole is provided with internal thread, and the front end of described drilling rod is provided with external screw thread, described first drill bit and described drilling rod are threaded connection, described axially extending bore is provided with internal thread, and on described drilling rod, corresponding position is provided with one section of external screw thread, and described second drill bit and drilling rod are threaded connection.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages:
A kind of roadway surrounding rock anti-collapse hole drill tool that the utility model provides, adopt, in the direction of advance of boring, the first drill bit is installed, in the direction of retreat of boring, the second drill bit is installed, thus normally carrying out of both having ensure that front holes, adverse effect drilling tool caused when rear collapse hole can be prevented again, and coal and rock broken in the timely broken rear boring of energy, improve the utilization rate of boring, improve the efficiency that fractured coal and rock is drilled, prevent in the process of drilling because collapse hole causes rod bit to lose, to the potential safety hazard that coal production causes, avoid in workman's work progress and salvage the work such as rod bit, ensure that and repair carrying out smoothly of lane work, improve the versatility of drilling tool.
Accompanying drawing explanation
Fig. 1 is the drilling tool schematic diagram in the borehole under prior art;
Fig. 2 is the structural representation of a kind of roadway surrounding rock anti-collapse hole drill tool of the utility model.
In figure: 1: the first drill bit; 2: limit spring button; 3: the second drill bits; 4: drilling rod; 5: coal and rock; 6: normal drill bit.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following instance for illustration of the utility model, but is not used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, the word of the indicating positions such as term "front", "rear" or position relationship is specify based on the direction of holing, the direction of advance of boring is " front ", the direction of retreat of boring is " afterwards ", only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
As shown in Figure 2, be a kind of roadway surrounding rock anti-collapse hole drill tool that the utility model provides, it comprises the first drill bit 1, second drill bit 3 and drilling rod 4, and described first drill bit 1 is arranged on the front end of described drilling rod 4, so that hole forward towards the direction of advance of holing; Described second drill bit 3 is sleeved on drilling rod 4 towards the direction of retreat of boring, so that when rear collapse hole, the second drill bit 3 is utilized to bore backward dynamic, the first drill bit 1 and drilling rod 4 is driven to retreat, eliminate with the coal and rock 5 that rear collapse hole is produced, ensure that boring is normally carried out, prevent drilling rod 4 drill bit from losing, production is impacted; In order to ensure normally carrying out of boring work, two drill bits are non-interference, also in order to smooth deslagging, be spaced a distance and arrange between described second drill bit 3 and described first drill bit 1.
In order to can deslagging smoothly in boring procedure forward, also in order to when collapse hole the second drill bit 3 can conveniently exit, the external diameter being arranged to described first drill bit 1 is greater than the external diameter of described second drill bit 3.
Particularly, the rear end of described first drill bit 1 is provided with locating hole, and described first drill bit 1 is arranged on described drilling rod 4 by described locating hole, and described second drill bit 3 is provided with axially extending bore, and described second drill bit 3 is sleeved on described drilling rod 4 by described axially extending bore; Further, the radial direction of described first drill bit 1 is also provided with the first spacing hole communicated with described locating hole, the radial direction of described second drill bit 3 is also provided with the second spacing hole communicated with described axially extending bore, described drilling rod 4 is respectively equipped with the limit spring button 2 matched with described first spacing hole and the second spacing hole, be fastened on respectively in described first spacing hole and the second spacing hole by described limit spring button 2, realize the spacing, fixing of described first drill bit 1 and the second drill bit 3.
Can also be, described locating hole is provided with internal thread, the front end of described drilling rod 4 is provided with external screw thread, described first drill bit 1 is threaded connection with described drilling rod 4, described axially extending bore is provided with internal thread, on described drilling rod 4, corresponding position is provided with one section of external screw thread, and described second drill bit 3 is threaded connection with drilling rod 4, thus realizes the spacing, fixing of the first drill bit 1 and the second drill bit 3; The spacing fixed form needed needed for selection can be set according to concrete.
Installation process of the present utility model and operating principle: drilling rod 4 is inserted in the locating hole of the first drill bit 1, and the limit spring button 2 on drilling rod 4 is inserted in the first spacing hole, realize the spacing of the first drill bit 1, the axially extending bore of the second drill bit 3 is sleeved on drilling rod 4 along the other end of drilling rod 4, and utilize another limit spring button 2 on drilling rod 4 to be inserted in the second spacing hole, realize the spacing of the second drill bit 3; When drilling, first drill bit 1 creeps into forward and carries out normal drilling construction, and fractured coal and rock 5, in boring drilling process, often exists after wearing brill, stick of tool and boring formation, the phenomenons such as drill bit rear country rock collapse hole, when in boring drilling process, when the phenomenons such as collapse hole appear in rear, drilling rod 4 can be retreated, use the second drill bit 3 to bore the dynamic coal and rock 5 by the generation of rear collapse hole to eliminate, ensure that boring is normally carried out, prevent drilling rod 4 drill bit from losing, production is impacted.
As can be seen from the above embodiments, the utility model structure is simple, easy and simple to handle, practical, what can either ensure that front holes normally carries out, adverse effect drilling tool caused when rear collapse hole can be prevented again, and coal and rock 5 broken in the timely broken rear boring of energy, improve the utilization rate of boring, improve the efficiency that fractured coal and rock 5 is drilled, prevent in the process of drilling because collapse hole causes drilling rod 4 drill bit to lose, to the potential safety hazard that coal production causes, avoid in workman's work progress work such as salvaging drilling rod 4 drill bit, ensure that and repair carrying out smoothly of lane work, improve the versatility of drilling tool.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a roadway surrounding rock anti-collapse hole drill tool, it is characterized in that, comprise the first drill bit, the second drill bit and drilling rod, described first drill bit is arranged on the front end of described drilling rod towards the direction of advance of holing, described second drill bit is sleeved on drilling rod towards the direction of retreat of boring, is spaced a distance between described second drill bit and described first drill bit.
2. roadway surrounding rock anti-collapse hole drill tool as claimed in claim 1, it is characterized in that, the external diameter of described first drill bit is greater than the external diameter of described second drill bit.
3. roadway surrounding rock anti-collapse hole drill tool as claimed in claim 2, it is characterized in that, the rear end of described first drill bit is provided with locating hole, described first drill bit is arranged on described drilling rod by described locating hole, described second drill bit is provided with axially extending bore, and described second drill bit is sleeved on described drilling rod by described axially extending bore.
4. roadway surrounding rock anti-collapse hole drill tool as claimed in claim 3, it is characterized in that, the radial direction of described first drill bit is also provided with the first spacing hole communicated with described locating hole, the radial direction of described second drill bit is also provided with the second spacing hole communicated with described axially extending bore, described drilling rod is respectively equipped with the limit spring button matched with described first spacing hole and the second spacing hole.
5. roadway surrounding rock anti-collapse hole drill tool as claimed in claim 3, it is characterized in that, described locating hole is provided with internal thread, the front end of described drilling rod is provided with external screw thread, described first drill bit and described drilling rod are threaded connection, described axially extending bore is provided with internal thread, and on described drilling rod, corresponding position is provided with one section of external screw thread, and described second drill bit and drilling rod are threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247793.7U CN204782767U (en) | 2015-04-22 | 2015-04-22 | Tunnel country rock dowelling jig utensil of preventing collapsing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247793.7U CN204782767U (en) | 2015-04-22 | 2015-04-22 | Tunnel country rock dowelling jig utensil of preventing collapsing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782767U true CN204782767U (en) | 2015-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520247793.7U Expired - Fee Related CN204782767U (en) | 2015-04-22 | 2015-04-22 | Tunnel country rock dowelling jig utensil of preventing collapsing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041217A (en) * | 2015-04-22 | 2015-11-11 | 天地科技股份有限公司 | Anti-sloughing drilling tool for surrounding rocks of tunnel |
-
2015
- 2015-04-22 CN CN201520247793.7U patent/CN204782767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041217A (en) * | 2015-04-22 | 2015-11-11 | 天地科技股份有限公司 | Anti-sloughing drilling tool for surrounding rocks of tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180422 |