CN203066884U - Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert - Google Patents
Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert Download PDFInfo
- Publication number
- CN203066884U CN203066884U CN 201320079839 CN201320079839U CN203066884U CN 203066884 U CN203066884 U CN 203066884U CN 201320079839 CN201320079839 CN 201320079839 CN 201320079839 U CN201320079839 U CN 201320079839U CN 203066884 U CN203066884 U CN 203066884U
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- China
- Prior art keywords
- insert
- drill rod
- drilling rod
- gas
- cambered surface
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- Expired - Lifetime
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Abstract
The utility model discloses an arc-shaped ribbed drill rod with a central hole allowing a gas release pipe to insert. Bolt joints and nut joints are arranged at the two end parts of a drill rod body; and a funneled cambered surface for inserting the gas release pipe from the tail end of the drill rod body to a drill bit end is turned on the inner end part of each bolt joint. The arc-shaped ribbed drill rod is simple in structure, does not influence the drilling efficiency of the drill rod and improves the gas drainage effect so as to completely solve the hidden danger of gas.
Description
Technical field
The utility model relates to the circular arc fin drilling rod that a kind of centre bore can insert the gas releasing tube.
Background technology
In the recovery process of high fiery colliery, principle according to " take out afterwards earlier and adopt ", must carry out gas drainage under suction earlier, and in the gas drainage under suction process no matter use which kind of drilling rod, put in place in case creep into, be about to drilling rod and extract, the methane gas in the coal seam penetrates into gas extraction hole, and extraction is gone out from gas extraction hole again.But in actual mechanical process, the chance that runs into soft seam is more, after drilling rod is extracted out, the hole phenomenon of collapsing often occurs, and stops up firedamp taking-out discharging drilling, causes Device in Gas can not in time discharge, drain, and influences the extraction effect.Bring serious potential safety hazard for follow-up coal mining.Again drill, not only increase cost, waste time, nor can solve the hole problem of collapsing.This is a great problem that present gas drainage under suction faces.So if the someone finds out and can place the drawing-off gas pipe in gas extraction hole and solve this difficult problem, yet present circular arc fin drilling rod centre bore is not isometrical, can't realize the purpose of full hole poling.
The utility model content
The purpose of this utility model provides a kind of for after breaking at gas extraction hole, and the centre bore that can insert the gas releasing tube in the drilling rod centre bore can insert the circular arc fin drilling rod of gas releasing tube.
For achieving the above object, the technical solution adopted in the utility model is: a kind of centre bore can insert the circular arc fin drilling rod of gas releasing tube, these both ends of drilling rod are provided with screwed joint, nut connector, and the inner end car of described screwed joint is useful on funnel-form cambered surface from drilling rod body end to the drill bit end that insert the gas releasing tube from.
Above-mentioned centre bore can insert the circular arc fin drilling rod of gas releasing tube, and described funnel-form cambered surface is convex arc surface or concaved circular cambered surface or taper cambered surface.
The beneficial effects of the utility model are:
The utility model utilize circular arc fin drilling rod punching the time beat fast, beat directly, the advantage that deslagging is effective, employing has convex arc surface or concaved circular cambered surface or taper cambered surface at the inner end car of screwed joint, can be after the gas hole breaks into, in the centre bore of drilling rod end, insert pre-buried releasing tube, when the front end of pre-buried releasing tube arrives drilling rod body inner bolt joint inner end, the front end of pre-buried releasing tube just can continue from the centre bore that the funnel-form cambered surface slips into screwed joint forward to extract drilling rod and drill bit then in inserting the coal seam.Pre-buried releasing tube is just stayed in the gas extraction hole, no matter have or not the hole phenomenon of collapsing, does not influence the discharging of gas in the coal seam, neither influences drilling quality, can solve gas drainage under suction effectively again.Thereby solved because of the soft seam hole of collapsing and influenced the difficult problem of gas drainage under suction.
The utility model is simple in structure, neither influences the drilling efficiency of drilling rod, can improve the effect of gas drainage under suction again, thereby has thoroughly solved gas hidden danger.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description.And to a certain extent, based on to investigating hereinafter, will be apparent to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction.Target of the present utility model and other advantages can be passed through following manual, claims, and the specifically noted structure realizes and obtains in the accompanying drawing.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Description of drawings
Fig. 1 is the utility model longitudinal plan
Fig. 2 is the A-A sectional view of Fig. 1
Mark among the figure: 1-screwed joint 2-nut connector 3-drilling rod body 4-drilling rod gravity vent 5-funnel-form cambered surface 6-joint gravity vent
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of centre bore can insert the circular arc fin drilling rod of gas releasing tube, drilling rod body 1 both ends are provided with screwed joint 1, nut connector 2, and the inner end car of described screwed joint 1 is useful on funnel-form cambered surface 5 from drilling rod body end to the drill bit end that insert the gas releasing tube from.
Described funnel-form cambered surface 5 is convex arc surface or concaved circular cambered surface or taper cambered surface.
During use, after the gas hole breaks into, in the terminal centre bore of drilling rod body 3, insert pre-buried releasing tube, because the aperture of drilling rod body gravity vent 4 is greater than the internal diameter of the joint gravity vent 6 of screwed joint 1, the front end of pre-buried releasing tube is easy to by drilling rod body gravity vent 4, but when the front end of pre-buried releasing tube arrives drilling rod body inner bolt joint 1 inner end, the front end of pre-buried releasing tube just must slip into 6 continuation of joint centre bore forward up to by inserting in the coal seam from funnel-form cambered surface 5, extracts drilling rod and drill bit then.Pre-buried releasing tube is just stayed in the gas extraction hole, and the hole phenomenon no matter whether collapse in the coal seam does not influence the discharging of gas, thereby solved a difficult problem that influences gas drainage under suction because of the hole of collapsing.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. a centre bore can insert the circular arc fin drilling rod of gas releasing tube, drilling rod body (1) both ends are provided with screwed joint (1), nut connector (2), it is characterized in that: the inner end car of described screwed joint (1) is useful on funnel-form cambered surface (5) from drilling rod body end to the drill bit end that insert the gas releasing tube from.
2. can insert the circular arc fin drilling rod of gas releasing tube according to the described centre bore of claim 1, it is characterized in that: described funnel-form cambered surface (5) is convex arc surface or concaved circular cambered surface or taper cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079839 CN203066884U (en) | 2013-02-01 | 2013-02-01 | Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079839 CN203066884U (en) | 2013-02-01 | 2013-02-01 | Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203066884U true CN203066884U (en) | 2013-07-17 |
Family
ID=48765694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320079839 Expired - Lifetime CN203066884U (en) | 2013-02-01 | 2013-02-01 | Arc-shaped ribbed drill rod with central hole allowing gas release pipe to insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203066884U (en) |
-
2013
- 2013-02-01 CN CN 201320079839 patent/CN203066884U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HENAN LONGTENG NEW DRILL MANUFACTURING CO.,LTD. Assignor: Tian Jianwei Contract record no.: 2016990000005 Denomination of utility model: Circular arc-shaped convex edge drill rod with center hole capable of allowing gas release pipe to insert Granted publication date: 20130717 License type: Exclusive License Record date: 20160111 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |