CN204252922U - The anti-crown drill device of earth drilling process blowout prevention - Google Patents
The anti-crown drill device of earth drilling process blowout prevention Download PDFInfo
- Publication number
- CN204252922U CN204252922U CN201420633247.2U CN201420633247U CN204252922U CN 204252922 U CN204252922 U CN 204252922U CN 201420633247 U CN201420633247 U CN 201420633247U CN 204252922 U CN204252922 U CN 204252922U
- Authority
- CN
- China
- Prior art keywords
- flange
- blowout prevention
- steel bushing
- pipe clamp
- clamping steel
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- 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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- Earth Drilling (AREA)
Abstract
The anti-crown drill device of a kind of earth drilling process blowout prevention, whole apparatus structure comprises drill pipe clamp, flange, orifice sleeve, flange bolt, flange nut, blowout prevention anti-top illiteracy plate, drill pipe clamp can firmly be buckled on drilling rod, flange and orifice sleeve are by being welded to connect, and flange and blowout prevention be anti-is pushed up and cover plate and be connected by flange stud and nut flange.If there is the phenomenon of crown drill, prominent water burst during drilling construction, when artesian water promotion drilling tool portals, plate is covered on the anti-top of blowout prevention can block drill pipe clamp, thus effectively stops drilling tool and water to be gone out.
Description
Technical field
The utility model relates to the anti-crown drill device of a kind of earth drilling process blowout prevention, belongs to the category of the underground construction artesian water detection equipment such as tunnel, mine.
Background technology
Before carrying out the underground construction Rock And Soil digging excavation such as tunnel, mine, to detect the property of water-bearing of pre-driving section rock mass, to ensure the safety of constructing.Probing is mode comparatively conventional at present, and the implementation process of probing, for laying several spy water hole in pre-driving section, through detection section, judges the moisture situation of the section of driving in advance by the water outlet situation of boring.
Underground construction is generally positioned at below natural water level, and the water in layer position residing for driving section rock mass is artesian water.High for present position water level, moisture abundant rock-soil layer, when disclosing water-bearing section when holing, huge hydraulic pressure can act on suddenly on drilling tool, produces huge surge, and crown drill occurs to drill bit, whole drilling tool is gone out boring rapidly, also can face the situation of the prominent water burst of boring simultaneously.
Summary of the invention
In order to overcome, underground construction bore detecting water level is high, moisture abundant rock-soil layer time there is the phenomenon of crown drill, prominent water burst, the utility model provides one to be specifically designed to the anti-crown drill device of earth drilling process blowout prevention, and this principle of device is simple, easy for operation.
The utility model solves the technical scheme that its technical problem adopts: earth drilling process blowout prevention anti-crown drill device mainly comprises drill pipe clamp, plate is covered on flange, orifice sleeve, flange bolt, flange nut, the anti-top of blowout prevention, and the orifice sleeve specification of wherein installing in flange and boring is identical, flange is welded in orifice sleeve; Drill pipe clamp comprises clamping steel bushing and pretension bolt, pre-load nut, clamping steel bushing there is the perforation of pretension bolt, clamping steel bushing two panels altogether, top is round table-like, by the effect of pretension bolt, pre-load nut make clamping steel bushing firm be buckled on drilling rod, the external diameter of the drill pipe clamp after installation is less than the internal diameter of orifice sleeve; It is short cylinder shape that slab integral is covered on the anti-top of blowout prevention, form-factor is corresponding with flange, and blowout prevention anti-top masking-out central hollow section is round table-like, and specification is coincide with the round platform at clamping steel bushing top, the end face diameter of round platform slightly larger than the external diameter of drilling rod, and is less than in drill pipe clamp the external diameter clamping steel bushing; Flange and blowout prevention be anti-is pushed up to cover between plate and is connected by 8 root flange bolts and 8 flange nuts.
Be divided into following four steps when this device specifically uses sequentially: 1. flange is welded in orifice sleeve, firm for orifice tube being installed on is constructed in the boring of certain depth; 2. lowering drill pipes stops to about 0.2m at the bottom of hole, by pretension bolt and pre-load nut, firm for drill pipe clamp is arranged on drilling rod, then drilling rod is transferred at the bottom of hole; 3. utilize the anti-top of blowout prevention to cover the middle through hole of plate, sleeve-board is covered on drilling rod in anti-for blowout prevention top; 4. by orifice sleeve and flange bolt, plate and flange compact siro spinning technology are covered in anti-for blowout prevention top.Thus, if there is the phenomenon of crown drill, prominent water burst during drilling construction, when artesian water promotion drilling tool portals, plate is covered on the anti-top of blowout prevention can block drill pipe clamp, thus stops drilling tool and water to be gone out.
The beneficial effects of the utility model are, can realize the prevention to high artesian crown drill and prominent water burst, and this apparatus structure is simple, easy to operate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the elevation of clamping steel bushing.
Fig. 2 is the elevation that plate is covered on the anti-top of blowout prevention.
Fig. 3 is longitudinal sectional view of the present utility model
Fig. 4 is the I--I sectional view of Fig. 3.
In figure: 1. clamp steel bushing, 2. drilling rod, 3. orifice sleeve, 4. flange, 5. plate, 6. flange bolt, 7. flange nut, 8. pretension bolt, 9. pre-load nut are covered in the anti-top of blowout prevention.
Detailed description of the invention
In FIG, clamping steel bushing (1) adopts high strength steel to process, and clamping steel bushing (1) is two panels altogether, can symmetry be buckled on drilling rod (2), top is round table-like, clamping steel bushing (1) has the perforation of pretension bolt (8).
In fig. 2, the anti-top of blowout prevention is covered plate (5) and is adopted high strength steel to be made, in short cylinder shape, blowout prevention anti-top masking-out (5) central hollow section is round table-like, specification is coincide with the round platform at clamping steel bushing (1) top, the end face diameter of round platform slightly larger than the external diameter of drilling rod (2), and is less than in drill pipe clamp the external diameter clamping steel bushing (1).
In Fig. 3, Fig. 4, flange (4) and orifice sleeve (3) specification are coincide, and adopt the mode of welding to connect; Flange (4) and blowout prevention be anti-is pushed up and covers plate (5) and be connected by 8 root flange bolts (6) and 8 flange nuts (7); Clamping steel bushing (1) is buckled on drilling rod (2) by pretension bolt (8) and pre-load nut (9); The specification of blowout prevention anti-top masking-out (5) central hollow round platform is coincide with the round platform at clamping steel bushing (1) top; If there is the phenomenon of crown drill, prominent water burst during drilling construction, when artesian water promotion drilling tool portals, plate (5) is covered on the anti-top of blowout prevention can block drill pipe clamp, thus stops drilling tool and water to be gone out.
Claims (3)
1. the anti-crown drill device of earth drilling process blowout prevention, whole apparatus structure comprises drill pipe clamp, flange, orifice sleeve, flange bolt, flange nut, blowout prevention anti-top illiteracy plate, it is characterized in that: drill pipe clamp can firmly be buckled on drilling rod, flange and orifice sleeve are by being welded to connect, and flange and blowout prevention be anti-is pushed up and cover plate and be connected by flange stud and nut flange.
2. the anti-crown drill device of earth drilling process according to claim 1 blowout prevention, it is characterized in that: drill pipe clamp comprises clamping steel bushing and pretension bolt, pre-load nut, clamping steel bushing there is the perforation of pretension bolt, clamping steel bushing two panels altogether, top is round table-like, makes firm being buckled on drilling rod of clamping steel bushing by the effect of pretension bolt, pre-load nut.
3. the anti-crown drill device of earth drilling process according to claim 1 blowout prevention, it is characterized in that: it is short cylinder shape that slab integral is covered on the anti-top of blowout prevention, form-factor is corresponding with flange, it is round table-like that plate central hollow section is covered on the anti-top of blowout prevention, specification is coincide with the round platform at clamping steel bushing top, the end face diameter of round platform slightly larger than the external diameter of drilling rod, and is less than in drill pipe clamp the external diameter clamping steel bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633247.2U CN204252922U (en) | 2014-10-28 | 2014-10-28 | The anti-crown drill device of earth drilling process blowout prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633247.2U CN204252922U (en) | 2014-10-28 | 2014-10-28 | The anti-crown drill device of earth drilling process blowout prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252922U true CN204252922U (en) | 2015-04-08 |
Family
ID=52957242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633247.2U Expired - Fee Related CN204252922U (en) | 2014-10-28 | 2014-10-28 | The anti-crown drill device of earth drilling process blowout prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252922U (en) |
-
2014
- 2014-10-28 CN CN201420633247.2U patent/CN204252922U/en not_active Expired - Fee Related
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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: 20150408 Termination date: 20211028 |