CN204082036U - Interval Reducing screw drilling rod is crept into for soft or hard compound seam - Google Patents
Interval Reducing screw drilling rod is crept into for soft or hard compound seam Download PDFInfo
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- CN204082036U CN204082036U CN201420572944.1U CN201420572944U CN204082036U CN 204082036 U CN204082036 U CN 204082036U CN 201420572944 U CN201420572944 U CN 201420572944U CN 204082036 U CN204082036 U CN 204082036U
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Abstract
The utility model discloses one and creep into interval Reducing screw drilling rod for soft or hard compound seam, comprise high helical blade, low helical blade, drilling rod body, high helical blade height is higher than low helical blade height, because blade height is different, drilling rod maximum outside diameter tangent line forms periodically height undulating state vertically.The height flighting schedule deslagging space, interval that the utility model relies on the helical blade discrepancy in elevation to be formed, makes drilling cuttings migrate and is in continuous fluctuation status, not easily pile up, decrease the probability that between conventional helical drilling rod blade, accumulated plugging occurs; Meanwhile, air vent can be set on high helical blade, realize pressure air drill and enter, extend the function of drilling rod.The utility model is novel in design, by the innovation of drilling rod cross sectional shape, change deslagging space characteristics in boring, improve deslagging efficiency, overcome conventional helical rod boring depth as shallow, drilling efficiency low and boring accidents the problem such as to take place frequently, be especially adapted to the soft or hard compound seam of solid coefficient 0.5<f≤1.
Description
Technical field
The utility model belongs to complex conditions coal seam, colliery probing field of engineering technology, is specifically related to one and creeps into interval Reducing screw drilling rod for soft or hard compound seam.
Background technology
Gas pumping is the prerequisite ensureing gaseous mine safe working, realize comprehensive gas utilization.Limit by coal seam geological condition and existing drilling construction technology, complex conditions drilling in coal technology is a difficult problem of generally acknowledging both at home and abroad.Because coal seam, China a lot of mining area is typical soft or hard compound seam, the weak seam that phase specific strength is very low, although the stability of boring makes moderate progress, but affect by factors such as geostatic stress, gas pressure, tectonic stress and drilling rod perturbation actions, localized borehole is easily formed " brill cave ", cause boring blocking, a lot of boring is difficult to reach projected depth.Current, round bur bar and auger stem are the drilling rods commonly used the most, and two kinds of drilling rods also exist problems in actual applications.Round bur bar take fluid as deslagging power source, and realize effect in the good coal seam of condition better, when soft or hard compound seam construction drill, drilling depth is shallow, and drilling efficiency is low; Compare round bur bar, application auger stem, coal dust is little, but is applied to hard compound seam when creeping into, and the deslagging efficiency of boring is low, and rig kinetic equation loss is large, bit freezing, inhale bore and breaking of rod phenomenon frequent, effect is poor.Therefore, be necessary to develop a kind of Novel drill rod, solve the technical problem that conventional drilling tool exists in soft or hard compound seam drilling construction.
Utility model content
The utility model is in order to solve weak point of the prior art, in conjunction with the problem that existing auger stem is in use deposited, by the innovation of drilling rod cross sectional shape, change the migration characteristics of deslagging space and drilling cuttings in boring, improve the deslagging efficiency of drilling rod, be conducive to overcoming conventional helical rod boring depth as shallow, drilling efficiency low and boring accidents and the technical problem such as take place frequently.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: creep into interval Reducing screw drilling rod for soft or hard compound seam, comprise high helical blade, low helical blade, drilling rod body, described high helical blade, low helical blade are fixed on drilling rod body.
Described high helical blade, its blade construction is designed to without air vent or arranges air vent two kinds of modes.
Described low helical blade, its blade height is lower than high helical blade height, and high helical blade height is 2 ~ 10 times of low helical blade height.
Described drilling rod body is made up of female fitting, the middle body of rod, convex joint, and female fitting and convex joint are connected to the two ends of the middle body of rod, and female fitting and convex joint are designed to be threaded or socket connection.
Adopting said structure, by changing helical blade structure, adjusting the aspect ratio of high helical blade, low helical blade, whether air vent is set on high helical blade, drilling rod body is designed to hollow structure or real cored structure, thus changes the deslagging mode of drilling rod, form dissimilar drilling rod.By arranging the different helical blade of blade height on drilling rod body, drilling rod maximum outside diameter tangent line forms periodically height undulating state vertically.In drilling process, in boring, drilling rod periphery forms height flighting schedule deslagging space, interval, drilling cuttings is migrated and is in continuous fluctuation status, not easily pile up, decrease the probability that between conventional helical drilling rod blade, accumulated plugging occurs.Drilling rod body is designed to hollow structure, and air vent is set on high helical blade, pressure air drill can be realized and enter, extend the function of drilling rod.Visible, the utility model is used for soft or hard compound seam and creeps into interval Reducing screw drilling rod, by the innovation of drilling rod cross sectional shape, change deslagging space characteristics in boring, improve deslagging efficiency, overcome the problems such as the low and boring accidents of conventional helical rod boring depth as shallow, drilling efficiency takes place frequently, especially the soft or hard compound seam of solid coefficient 0.5<f≤1 is adapted to, be conducive to improving cherry coal rock drilling depth, improve and creep into and become porosity, be worth applying in coal mining enterprise.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the left view of Fig. 1;
Deslagging principle schematic when Fig. 3 is the utility model enforcement;
Fig. 4 is the structural representation of the utility model embodiment two;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the structural representation of the utility model embodiment three;
Fig. 7 is the structural representation of the utility model embodiment four.
Detailed description of the invention
Embodiment one: as shown in Figure 1 and Figure 2, of the present utility modelly creeps into interval Reducing screw drilling rod for soft or hard compound seam, and comprise high helical blade 1, low helical blade 2, drilling rod body 3, described high helical blade 1, low helical blade 2 are fixed on drilling rod body 3.High helical blade 1, its blade construction is designed to without air vent 4 or arranges air vent 4 two kinds of modes.Low helical blade 2, its blade height is lower than high helical blade 1 height, and high helical blade 1 is highly 2 ~ 10 times of low helical blade 2 height.Drilling rod body 3 is made up of female fitting 7, the middle body of rod 6, convex joint 5, and female fitting 7 and convex joint 5 are connected to the two ends of the middle body of rod 6, and female fitting 7 and convex joint 5 are designed to be threaded or socket connection.
Introduce the utility model embodiment one below and creep into interval Reducing screw rod boring principle for soft or hard compound seam:
Conventional helical drilling rod rotates the frictional force of formation by outside drilling cuttings tap by helical blade, and its power source comes from rig.Conventional helical drilling rod is applied to complex conditions drilling in coal, and borehole circumference coal body 8 is out of shape seriously, when crippling forms boring blocking, compressibilty blocking is formed between blade, easy formation leaf abscission, blocking section is difficult to dredging more, causes that drilling efficiency is low, bit freezing, breaking of rod accident are frequent.
As shown in Figure 3, the utility model embodiment one is adopted to creep into interval Reducing screw drilling rod for soft or hard compound seam, by changing helical blade structure, adjust the aspect ratio of high helical blade 1, low helical blade 2, drilling rod maximum outside diameter tangent line forms periodically height undulating state vertically.In drilling process, in boring, drilling rod periphery forms height flighting schedule deslagging space 10, interval, drilling cuttings is migrated and is in continuous fluctuation status, not easily pile up, decrease the probability that between conventional helical drilling rod blade, accumulated plugging occurs.Drilling rod body is designed to hollow structure, drilling rod body 3 couples together, form slagging channel 9, and air vent 4 is set on high helical blade, pressure air drill can be realized enter, form slagging channel between air vent 4 on high helical blade 1, air-flow is high speed circulation between blade air vent 4, can effectively alleviate boring blockage problem.
Embodiment two: as shown in Figure 4, Figure 5, different from embodiment one is, changes the connected mode of tool joint, and female fitting 12, convex joint 11 are designed to hexagonal structure, side design pin hole 13, convex joint 11 arranges the groove 14 corresponding with pin hole 13.
Embodiment three: as shown in Figure 6, from embodiment one, different being of embodiment two, change the cross sectional shape of high helical blade 1 upper vent hole 4, more large-area slagging channel is formed between the air vent 4 of high helical blade 1, pressure can be played more fully and assist deslagging effect, in boring distortion critical regions, the drilling effect of interval Reducing screw drilling rod in soft or hard compound seam more can be played.
Embodiment four: as shown in Figure 7, from embodiment one, embodiment two, different being of embodiment three, eliminates high helical blade 1 air vent 4, when coal rock layer is more stable, can consider to cancel high helical blade 1 air vent 4, simplify jackrod structure, reduce the processing cost of drilling rod.
Claims (4)
1. creep into interval Reducing screw drilling rod for soft or hard compound seam, comprise high helical blade, low helical blade, drilling rod body, it is characterized in that: described high helical blade, low helical blade are fixed on drilling rod body.
2. according to claim 1ly creep into interval Reducing screw drilling rod for soft or hard compound seam, it is characterized in that: described high helical blade, its blade construction is designed to arrange air vent or without air vent two kinds of modes.
3. according to claim 1ly creep into interval Reducing screw drilling rod for soft or hard compound seam, it is characterized in that: described low helical blade, its blade height is lower than high helical blade height, and high helical blade height is 2 ~ 10 times of low helical blade height.
4. according to claim 1ly creep into interval Reducing screw drilling rod for soft or hard compound seam, it is characterized in that: described drilling rod body is made up of female fitting, the middle body of rod, convex joint, female fitting and convex joint are connected to the two ends of the middle body of rod, and female fitting and convex joint are designed to be threaded or socket connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420572944.1U CN204082036U (en) | 2014-10-07 | 2014-10-07 | Interval Reducing screw drilling rod is crept into for soft or hard compound seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420572944.1U CN204082036U (en) | 2014-10-07 | 2014-10-07 | Interval Reducing screw drilling rod is crept into for soft or hard compound seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082036U true CN204082036U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420572944.1U Expired - Fee Related CN204082036U (en) | 2014-10-07 | 2014-10-07 | Interval Reducing screw drilling rod is crept into for soft or hard compound seam |
Country Status (1)
| Country | Link |
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| CN (1) | CN204082036U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213853A (en) * | 2014-10-07 | 2014-12-17 | 王永龙 | Drilling interval variable-diameter spiral drill pipe for soft-hard composite coal seam |
| CN104863525A (en) * | 2015-06-10 | 2015-08-26 | 马妮 | Deep-hole spiral pile hammer |
| CN108397139A (en) * | 2018-03-19 | 2018-08-14 | 杭州好桩机械科技有限公司 | The dismountable threaded drillpipe of ultra-deep pile foundation |
-
2014
- 2014-10-07 CN CN201420572944.1U patent/CN204082036U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213853A (en) * | 2014-10-07 | 2014-12-17 | 王永龙 | Drilling interval variable-diameter spiral drill pipe for soft-hard composite coal seam |
| CN104863525A (en) * | 2015-06-10 | 2015-08-26 | 马妮 | Deep-hole spiral pile hammer |
| CN108397139A (en) * | 2018-03-19 | 2018-08-14 | 杭州好桩机械科技有限公司 | The dismountable threaded drillpipe of ultra-deep pile foundation |
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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: 20150107 Termination date: 20191007 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |