CN204609784U - A kind of soft seam setting of casing locking-type combined drill - Google Patents
A kind of soft seam setting of casing locking-type combined drill Download PDFInfo
- Publication number
- CN204609784U CN204609784U CN201520241916.6U CN201520241916U CN204609784U CN 204609784 U CN204609784 U CN 204609784U CN 201520241916 U CN201520241916 U CN 201520241916U CN 204609784 U CN204609784 U CN 204609784U
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- China
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- bit body
- outside
- flexible member
- locking bolt
- drill
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- Expired - Fee Related
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Abstract
A kind of soft seam setting of casing locking-type combined drill, comprise the outside bit body with central through hole, outside bit body upper end is provided with outside drill support and inner bit body, outside drill support is provided with the externally equally distributed outside drill alloy sheet of drill support circumference, inner bit body one end and outside bit body hinged, the inner bit body other end is connected with outside bit body by the block on outside bit body medial surface, lock type device is provided with below described inner bit body, lock type device comprises flexible member, locking bolt and dead bolt, flexible member one end is fixedly connected with inner bit body, the other end is connected with locking bolt, inner bit body is provided with groove above flexible member, locking bolt slides and is arranged at below inner bit body, dead bolt right-hand member is fixedly installed on outside bit body, locking bolt right-hand member is positioned at immediately below dead bolt left end.
Description
Technical field
The utility model relates to setting of casing aperture guard device in a kind of downhole crushed or soft coal petrography drilling process, particularly relates to a kind of soft seam setting of casing locking-type combined drill.
Background technology
Now there are some researches show: when holing to broken or weak seam, the exposed area of coal rolls up, a large amount of adsorption gas parses and enters in macrovoid and crack from micropore, pools together exposed surface around hole wall discharge with free gas; Simultaneously because interstitial space all kinds of around hole wall is communicated with, in coal seam, the large energy of gas storage will be dispersed rapidly, at the flows by action of barometric gradient to boring, and weak seam modulus of elasticity compared with low, poisson's ratio compared with high, fragility greatly, easily broken, make that pore-forming aperture diminishes, collapse hole, gas channel diminish, blocking etc.When adopting wet boring, water, while deslagging, affects larger on coal seam physical property and mechanical property.The hydration of its reason mainly coal, i.e. physical weakening effect and mechanical function.After coal cinder immersion, water along crack, hole enters in coal, each particle on the wetting whole scope of freedom of coal cinder; Due to the intrusion of hydrone, weaken intergranular contact, the mechanical property of coal is deteriorated.Can pressure be produced when water enters into coal body hole, crack simultaneously, the coal body elastic buckling limit is reduced, be easy to generation plastic strain same; Time also can reduce the shear strength of coal body, make it be easy to shear failure occurs, cause its intensity to reduce.Show as weak seam easily to occur " argillization ", lose support force.Under the effect of geostatic stress, cave in, fall the phenomenons such as block.Due to boring collapse after the shutoff passage of Gas Flow, greatly affect effective extraction of coal-bed gas, therefore the usual floral tube of China's soft seam firedamp taking-out discharging drilling carries out guard aperture as sleeve pipe, to increase the extracting result of gas.But due to collapse hole speed after broken or weak seam pore-forming, often cause sleeve pipe cannot enter projected depth down, thus greatly have impact on the effect being increased drill mash gas by setting of casing guard aperture.Existing technology inserts guard aperture sleeve pipe in drilling rod and drill bit, substantially increases the efficiency of soft seam setting of casing guard aperture.But the middle part bit body due to existing setting of casing drill bit mainly relies on frictional force to control closed and breakdown, stable poor, middle part bit body is very easily ejected by blast or hydraulic pressure in the process of drilling, and causes middle part bit body fractureed in drilling process and depart from.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of soft seam setting of casing locking-type combined drill, and its structure is simple, easy to maintenance, low cost of manufacture and reliability and durability.
Concrete technical scheme is: a kind of soft seam setting of casing locking-type combined drill, comprise the outside bit body with central through hole, outside bit body upper end is provided with outside drill support and inner bit body, outside drill support is provided with the externally equally distributed outside drill alloy sheet of drill support circumference, inner bit body one end and outside bit body hinged, the inner bit body other end is connected with outside bit body by the block on outside bit body medial surface, lock type device is provided with below described inner bit body, lock type device comprises flexible member, locking bolt and dead bolt, flexible member one end is fixedly connected with inner bit body, the other end is connected with locking bolt, inner bit body is provided with groove above flexible member, locking bolt slides and is arranged at below inner bit body, dead bolt right-hand member end is fixedly installed on outside bit body, locking bolt right-hand member is positioned at immediately below dead bolt left end.
Be provided with flexible member fixed bearing and lock bolt sleeve below described inner bit body, flexible member one end is connected with flexible member fixed bearing, and the other end is connected with locking bolt, and locking bolt slides and is arranged in lock bolt sleeve.
Described flexible member is spring or elastic steel sheet.
Described locking bolt right-hand member downside is the smooth bevel of inclined upward to the right.
Described inner bit body one end is rotationally connected by rotating shaft and outside bit body.
The utility model inner bit body can rotate around the axis, when locking bolt right-hand member turns to dead bolt left end upper side, due to the smooth bevel that locking bolt right-hand member downside is inclined upward to the right, locking bolt in lock bolt sleeve to left movement, after locking bolt walks around dead bolt, locking bolt moves right to dead bolt under the effect of flexible member, now inner bit body is defined its position under the acting in conjunction of block and locking bolt, enter blocking, when soft seam is drilled, locking bolt is in blocking, when inserting guard aperture sleeve pipe from drilling rod and drill bit internal after soft seam drills end, the taper sheath pipe cap of sleeve pipe front end upwards pushes up in the middle part of compression elasticity element, make to move in groove in the middle part of flexible member, the locking bolt of flexible member drive simultaneously slides and makes locking bolt to left movement in lock bolt sleeve, inner bit body unlocking state, inner bit body rotates around the shaft to stand up position, sleeve pipe is appeared in the middle part of outside bit body, thus realize from guard aperture sleeve pipe drilling rod and drill bit internal.
The utility model structure is simple, and easy to use, replicability is strong.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 is the utility model non-blocked status architecture schematic diagram;
Fig. 4 is the utility model lock type device structural representation;
Fig. 5 is Fig. 4 upward view.
Detailed description of the invention
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, a kind of soft seam setting of casing locking-type combined drill, comprise the outside bit body 1 with central through hole, outside bit body 1 upper end is provided with outside drill support 2 and inner bit body 3, outside drill support 2 is provided with the externally equally distributed outside drill alloy sheet 4 of drill support 2 circumference, inner bit body 3 left end is rotationally connected by rotating shaft 12 and outside bit body 1, inner bit body 3 right-hand member is connected with outside bit body 1 by the block 5 on outside bit body 1 medial surface, stop when inner bit body 3 right-hand member turns to block 5 continuing to rotate, lock type device is provided with below inner bit body 3, lock type device comprises flexible member 6, locking bolt 7 and dead bolt 8, flexible member 6 one end is fixedly connected with inner bit body 3, the other end is connected with locking bolt 7, flexible member 6 is spring or elastic steel sheet, inner bit body 3 is provided with groove 9 above flexible member 6, locking bolt 7 slides and is arranged at below inner bit body 3, locking bolt 7 right-hand member downside is the smooth bevel of inclined upward to the right, dead bolt 8 right-hand member end is fixedly installed on outside bit body 1, locking bolt 7 right-hand member is positioned at immediately below dead bolt 8 left end.
Be provided with flexible member fixed bearing 10 and lock bolt sleeve 11 below described inner bit body 3, flexible member 6 one end is connected with flexible member fixed bearing 10, and the other end is connected with locking bolt 7, and locking bolt 7 slides and is arranged in lock bolt sleeve 11.
The utility model inner bit body 3 can 12 rotate around the shaft, when locking bolt 7 right-hand member turns to dead bolt 8 left end upper side, due to the smooth bevel that locking bolt 7 right-hand member downside is inclined upward to the right, locking bolt 7 in lock bolt sleeve 11 to left movement, after locking bolt 7 walks around dead bolt 8, locking bolt 7 moves right to dead bolt 8 under the effect of flexible member 6, now inner bit body 3 is defined its position under the acting in conjunction of block 5 and locking bolt 7, enter blocking, when soft seam is drilled, locking bolt 7 is in blocking, when inserting guard aperture sleeve pipe from drilling rod and drill bit internal after soft seam drills end, the taper sheath pipe cap of sleeve pipe front end upwards pushes up in the middle part of compression elasticity element 6, make to move in groove 9 in the middle part of flexible member 6, simultaneously flexible member 6 drives locking bolt 7 to slide in lock bolt sleeve 11 to make locking bolt 7 to left movement, inner bit body 3 unlocking state, inner bit body 3 12 rotations are around the shaft to stand up position, sleeve pipe is appeared in the middle part of outside bit body 1, thus realize from guard aperture sleeve pipe drilling rod and drill bit internal.
Claims (5)
1. a soft seam setting of casing locking-type combined drill, comprise the outside bit body with central through hole, outside bit body upper end is provided with outside drill support and inner bit body, outside drill support is provided with the externally equally distributed outside drill alloy sheet of drill support circumference, inner bit body one end and outside bit body hinged, the inner bit body other end is connected with outside bit body by the block on outside bit body medial surface, it is characterized in that: below described inner bit body, be provided with lock type device, lock type device comprises flexible member, locking bolt and dead bolt, flexible member one end is fixedly connected with inner bit body, the other end is connected with locking bolt, inner bit body is provided with groove above flexible member, locking bolt slides and is arranged at below inner bit body, dead bolt right-hand member is fixedly installed on outside bit body, locking bolt right-hand member is positioned at immediately below dead bolt left end.
2. a kind of soft seam setting of casing locking-type combined drill as claimed in claim 1, it is characterized in that: below described inner bit body, be provided with flexible member fixed bearing and lock bolt sleeve, flexible member one end is connected with flexible member fixed bearing, the other end is connected with locking bolt, and locking bolt slides and is arranged in lock bolt sleeve.
3. a kind of soft seam setting of casing locking-type combined drill as claimed in claim 1 or 2, is characterized in that: described flexible member is spring or elastic steel sheet.
4. a kind of soft seam setting of casing locking-type combined drill as claimed in claim 1, is characterized in that: described locking bolt right-hand member downside is the smooth bevel of inclined upward to the right.
5. a kind of soft seam setting of casing locking-type combined drill as claimed in claim 1, is characterized in that: described inner bit body one end is rotationally connected by rotating shaft and outside bit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241916.6U CN204609784U (en) | 2015-04-21 | 2015-04-21 | A kind of soft seam setting of casing locking-type combined drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241916.6U CN204609784U (en) | 2015-04-21 | 2015-04-21 | A kind of soft seam setting of casing locking-type combined drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609784U true CN204609784U (en) | 2015-09-02 |
Family
ID=53962356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520241916.6U Expired - Fee Related CN204609784U (en) | 2015-04-21 | 2015-04-21 | A kind of soft seam setting of casing locking-type combined drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609784U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575164A (en) * | 2017-10-25 | 2018-01-12 | 中煤科工集团重庆研究院有限公司 | A kind of high-pressure hydraulic with the conditions of brill radially creeps into guider and method |
| CN108533181A (en) * | 2018-03-14 | 2018-09-14 | 邹城兖矿泰德工贸有限公司 | Special drill bit for hard rocks |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
-
2015
- 2015-04-21 CN CN201520241916.6U patent/CN204609784U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575164A (en) * | 2017-10-25 | 2018-01-12 | 中煤科工集团重庆研究院有限公司 | A kind of high-pressure hydraulic with the conditions of brill radially creeps into guider and method |
| CN108533181A (en) * | 2018-03-14 | 2018-09-14 | 邹城兖矿泰德工贸有限公司 | Special drill bit for hard rocks |
| CN108533181B (en) * | 2018-03-14 | 2019-09-17 | 邹城兖矿泰德工贸有限公司 | Special drill bit for hard rocks |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
| CN109113786B (en) * | 2018-10-12 | 2023-09-08 | 安徽理工大学 | Gas extraction device capable of withdrawing drill rod |
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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 |
Granted publication date: 20150902 Termination date: 20170421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |