CN201401135Y - Hole-expanding type tapered spiral drilling rod - Google Patents
Hole-expanding type tapered spiral drilling rod Download PDFInfo
- Publication number
- CN201401135Y CN201401135Y CN2009200325455U CN200920032545U CN201401135Y CN 201401135 Y CN201401135 Y CN 201401135Y CN 2009200325455 U CN2009200325455 U CN 2009200325455U CN 200920032545 U CN200920032545 U CN 200920032545U CN 201401135 Y CN201401135 Y CN 201401135Y
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- drilling
- drilling rod
- spiral
- type tapered
- rod
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Abstract
The utility model relates to a drilling rod used for carrying out spiral drilling on a fluffy and protruding coal bed, in particular to a hole-expanding type tapered spiral drilling rod. In the priorart, when the spiral drilling is carried out in the fluffy and protruding coal bed, the drilling rod which is used is spiral with equal diameter, and the outer diameter of the drilling rod and the diameter of a drilling head are changed much; when in drilling, coal dust can be easily accumulated at the connecting position between the drilling head and the drilling rod; moreover, as the drilling rod does not have the functions of hole expanding and cutting, accidents such as drill clamping, holding and the like can be easily incurred so as to cause low drilling efficiency and small drilling depth. A spiral leaf blade of the provided spiral drilling rod adopts the tapered structure, and a hard alloy cutting edge is welded on the leaf blade; when in drilling, the drilling rod is connected between the drilling head and the equal-diameter spiral drilling rod, so as to lead stable and smooth changing of the radial size between the drilling head and the drilling rod, thereby expanding holes and cutting the accumulated coal dust. Therefore, the hole-expanding type tapered spiral drilling rod improves the spiral drilling efficiency, increases the drilling depth, and adapts to the requirements of spiral drilling techniques.
Description
Technical field
The utility model relates to a kind of drilling rod that soft projecting coal bed spiral creeps into that is used for, and is a kind of reaming type tapered screw drill rod specifically.
Technical background
In the prior art, the spiral drilling technology is one of effective means that solves soft projecting coal bed gas pumping, and it has advantages such as drilling efficiency height, environmental pollution are little.
At present, when creeping into, drill bit directly is connected with isometrical auger stem at the soft spiral that carries out in projecting coal bed, and the more isometrical auger stem diameter of bit diameter is big.In the drilling process, drill bit and auger stem junction are piled up drilling cuttings easily, and the row's of causing powder is not smooth, cause drilling accidents such as bit freezing, armful brill, thereby have reduced efficient and drilling depth that spiral creeps into.
The utility model content
The purpose of this utility model is to provide a kind of coal dust that can reduce between drill bit and the drilling rod to pile up, and improves the reaming type tapered screw drill rod of drilling efficiency and drilling depth.
For achieving the above object, the technical solution adopted in the utility model is:
Reaming type tapered screw drill rod, its special character is: described drilling rod comprises male joint, intermediate bar, female joint, helical blade and carbide cutting sword; Core bar is formed in described male joint, intermediate bar and female joint, and its cylindrical is shaped as isometrical; Described helical blade is that monnolithic case is a pyramidal structure, and the small end of helicon blade is welded on female joint one end, and radial dimension equates substantially with bit diameter; Last pitch external diameter of the big end of helicon blade equates with isometrical auger stem blade external diameter.
The carbide cutting sword is set on the outward flange of above-mentioned helical blade.
The above-mentioned male joint and the connected mode of female joint are screw connected or the latch interconnection system.
The cylindrical of above-mentioned core bar is shaped as pyramidal structure.
Above-mentioned helical blade is a continuous hurricane band, is arranged on continuously on the core bar of being made up of male joint, intermediate bar and female joint.
The utility model is with respect to prior art, and its advantage is as follows: the auger stem blade is a pyramidal structure, and is welded with the carbide cutting sword.When creeping into, this tapered screw drill rod couples together drill bit and isometrical auger stem, forms the changeover portion between the two, makes the radial dimension between drill bit and drilling rod change mild, smooth.Owing on this drilling rod blade external diameter the carbide cutting sword is arranged, in drilling process, it plays the effect of reaming cutting, thereby reduces the coal dust accumulation in the hole, improves row's powder effect, increases drilling depth.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
The specific embodiment
Referring to Fig. 1, the utility model is made of male joint 1, intermediate bar 2, female joint 3, helical blade 4 and carbide cutting sword 5, and helical blade 4 is welded on the isometrical outer flat core bar of being made up of male joint 1, intermediate bar 2 and female joint 3 or taper core bar; Connected mode between male joint 1 and the female joint 3 is screw-type or bolt-type.
Helical blade fin 4 of the present utility model is a pyramidal structure, taper blade 4 small ends are welded on female joint one end, and radial dimension equates substantially with bit diameter, taper blade 4 big last pitch external diameter of end equate with isometrical auger stem blade external diameter, this drilling rod is connected between drill bit and the isometrical auger stem when creeping into, and makes the radial dimension between drill bit and drilling rod change mild.
Be welded with the carbide cutting sword on the cone spiral vane 4 of the utility model drilling rod, make drilling rod have reaming cutting function.
The male joint 1 of the utility model drilling rod and female joint 3 difference friction weldings are at the two ends of intermediate bar 2.
The helical blade 4 of the utility model drilling rod is a continuous hurricane band, and is welded on continuously on the isometrical outer flat core bar of being made up of male joint 1, intermediate bar 2 and female joint 3 or taper core bar, is beneficial in the drilling process auger stem and arranges powder continuously.When creeping into, this drilling rod is connected between drill bit and the isometrical auger stem, can be with drill bit drilling coal dust, and the coal dust that reduces between drill bit and the drilling rod is piled up, and improves drilling efficiency and drilling depth.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, reaming type tapered screw drill rod is characterized in that: described drilling rod comprises male joint (1), intermediate bar (2), female joint (3), helical blade (4) and carbide cutting sword; Described male joint (1), intermediate bar (2) are formed core bar with female joint (3), and its cylindrical is shaped as isometrical; Described helical blade (4) is a pyramidal structure for monnolithic case, and the small end of helicon blade is welded on female joint one end, and radial dimension equates substantially with bit diameter; Last pitch external diameter of the big end of helicon blade equates with isometrical auger stem blade external diameter.
2, reaming type tapered screw drill rod according to claim 1 is characterized in that: carbide cutting sword (5) is set on the outward flange of described helical blade (4).
3, reaming type tapered screw drill rod according to claim 1 and 2 is characterized in that: described male joint (1) is screw connected or the latch interconnection system with the connected mode of female joint (3).
4, reaming type tapered screw drill rod according to claim 1 and 2 is characterized in that: the cylindrical of described core bar is shaped as pyramidal structure.
5, reaming type tapered screw drill rod according to claim 1 and 2 is characterized in that: described helical blade (4) is a continuous hurricane band, is arranged on continuously on the core bar of being made up of male joint (1), intermediate bar (2) and female joint (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200325455U CN201401135Y (en) | 2009-04-10 | 2009-04-10 | Hole-expanding type tapered spiral drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200325455U CN201401135Y (en) | 2009-04-10 | 2009-04-10 | Hole-expanding type tapered spiral drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201401135Y true CN201401135Y (en) | 2010-02-10 |
Family
ID=41660935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200325455U Expired - Lifetime CN201401135Y (en) | 2009-04-10 | 2009-04-10 | Hole-expanding type tapered spiral drilling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201401135Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664849A (en) * | 2021-02-23 | 2021-11-19 | 米其林集团总公司 | Robot equipped with gripper for performing picking process |
-
2009
- 2009-04-10 CN CN2009200325455U patent/CN201401135Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664849A (en) * | 2021-02-23 | 2021-11-19 | 米其林集团总公司 | Robot equipped with gripper for performing picking process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE Owner name: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RE Free format text: FORMER NAME: SIAN BRANCH OF CHINA COAL RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: CCTEG Xi'an Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Research Institute Of China Coal Research Institute Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: Xi'an Research Institute Of China Coal Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Branch of China Coal Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |
|
| CX01 | Expiry of patent term |