CN202850882U - Drill rod right and reverse rotating connection device for underground coal mine drilling machine - Google Patents
Drill rod right and reverse rotating connection device for underground coal mine drilling machine Download PDFInfo
- Publication number
- CN202850882U CN202850882U CN 201220445771 CN201220445771U CN202850882U CN 202850882 U CN202850882 U CN 202850882U CN 201220445771 CN201220445771 CN 201220445771 CN 201220445771 U CN201220445771 U CN 201220445771U CN 202850882 U CN202850882 U CN 202850882U
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- spline
- involute
- external splines
- drilling rod
- coal mine
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Abstract
The utility model discloses a drill rod right and reverse rotating connection device for an underground coal mine drilling machine. The drill rod right and reverse rotating connection device is composed of a first outer spline, a second outer spline, an inner spline sleeve and a spring cylindrical pin. Involute outer splines (11 and 12) are arranged on the outer walls of the first outer spline and the second outer spline (1 and 2), and an involute inner spline (31) is axially arranged in an inner cavity of the inner spline sleeve (3) in a through machining mode. The involute outer splines of the first outer spline and the second outer spline are sleeved in the involute inner spline which is axially arranged in the inner cavity of the inner spline sleeve in the through machining mode. One end of the first outer spline (1) is connected with a drilling rod, and the other end of the first outer spline (1) is provided with circular cone male threads (12) in matched connection with circular cone female threads (22) arranged in an inner cavity on one end of the second outer spline (2). A spline axial positioning hole (13) is formed in the involute outer splines (11) of the first outer spline in a radial mode, and corresponds to a spline axial positioning hole (32) formed in the inner spline sleeve in a radial mode, and is fixedly connected with the spring cylindrical pin (4). The other end of the second outer spline is connected with the drilling rod.
Description
Technical field
The utility model relates to a kind of drilling rod rotating linkage for rig under the coal mine, belongs to rig attachment technique field.
Background technology
At present, the used drilling rod of small-sized geological drilling rig under the coal mine, the mode that generally adopts yin, yang tapered tread to connect is crept into moment of torsion and connection respectively saves drilling rod with the fastening strength transmission of screw thread.The drilling rod body of rod outer wall of holing in the coal seam also is typically provided with the transport screw stator, forward precession deslagging outside the hole.Because due to the connection character of screw thread, each saves that drilling rod connects can only unidirectional tightened-up, and rig can only unidirectionally creep into.When holing in the dirt band coal seam with in than soft seam, broken spoil drill-pipe-sticking-head or the soft seam hole holding card drilling rod phenomenon of collapsing can often appear.In case this phenomenon occurs, just can drill bit or drilling rod is stuck, not only boring can't continue to creep into, and drilling rod also is difficult to extract out in the boring.If want to allow the rig counter-rotating, making drilling rod and drill bit can obtain buffering processes, just can produce in the inside of boring drilling rod yin, yang tapered tread moves back button and breaks away from the phenomenon that connects, cause up to a hundred meters drilling rod and drill bit to be discarded in the coal seam, the boring of having crept into is scrapped, also lost a large amount of drilling rods and drill bit, several ten thousand yuan at least, hundreds thousand of units at most, thus engineering loss and material unaccounted-for (MUF) both caused, affected again the progress of engineering.
The utility model content
The purpose of this utility model is to provide a kind of drilling rod and drill bit of can making can to creep into by forward in boring, can cushion and have again the drilling rod rotating linkage that is used for rig under the coal mine of enough anti-torsion abilities in the other direction.
Its technical scheme is: a kind of drilling rod rotating linkage for rig under the coal mine is characterized in that: be comprised of first, second external splines and inner spline housing and spring cylindrical pin.Be equipped with involute outer spline on the outer wall of first, second external splines, the lumen shaft of inner spline housing is to the elongated involute inner spline that is processed with.The involute outer spline part of first, second external splines, the lumen shaft that is sleeved on inner spline housing is processed with in the involute inner spline to elongated.One end jointed rod of the first external splines, the other end is provided with the circular cone pin thread, is connected with the circular cone negative thread coupling that the second external splines one end inner chamber is offered; Radially be provided with splined shaft on the involute outer spline of the first external splines to locating hole, corresponding to locating hole with the splined shaft of radially offering on the inner spline housing, be connected and fixed by spring cylindrical pin; The other end of the second external splines is connected with drill bit shaft.
Its technique effect is: the utility model original drilling rod adopt that the circular cone yin, yang is threaded the basis on, set up the involute spline that a cover is made of first, second external splines and inner spline housing at the outer wall at tool joint position again and connected secondary.Take the circular cone yin, yang to be threaded between in the inner spline housing second and the first external splines, be mainly used to bear drilling rod and be connected axial connection with drill bit shaft, take pin to be connected between inner spline housing and the first external splines.The circumferential torsional moment that forward creeps into and oppositely cushions is mainly born by involute spline, thereby the dual connection of the circumferential and axial of having realized tool joint, forward creeps into when making drilling rod possess boring, oppositely move back the bar buffering or take out the dual-use function of removing drilling rod, and so that borer drill rod has the ability of bi-directional moment of torsion: when drilling construction in dirt band coal seam or soft seam, when broken spoil bit freezing or soft seam occurring and collapsing hole holding card drilling rod phenomenon, mode that can be by counter-rotating is under the external pull effect of axial thrust to the hole outside that drilling rod spiral stator produces and rig, allow drill bit break away from the broken cash of bit freezing or allow the drilling rod segment distance that in boring, falls back, then recover again forward, use impact energy back and forth to move, just can overcome bit freezing and holding card drilling rod phenomenon, proceed drilling construction; If abandon original boring, when again choosing the position, hole and spudding in, also can pass through inversion mode, what produce when drilling-rod external wall spiral stator reverses axially under the external pull effect of thrust and rig, withdraws from drilling rod and drill bit safely outside the hole.So just can be when bit freezing to be not too serious, the boring fault is processed on safe ready ground, guarantees safe construction and programming.Also drilling rod and drill bit be can withdraw from when serious or geological conditions is relatively poor when the bit freezing phenomenon convenient and reasonablely, the loss of a large amount of engineerings and the loss of material avoided.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the first external splines structural representation;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the second external splines structural representation
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the inner spline housing structural representation
Fig. 7 is the C-C sectional view of Fig. 6;
Fig. 8 is the inner spline housing structural representation with the transport screw stator.
The specific embodiment
Shown in Fig. 1～8, a kind of drilling rod rotating linkage for rig under the coal mine is comprised of first, second external splines and inner spline housing and spring cylindrical pin.Be equipped with involute outer spline 11,21 on first, second external splines 1,2 the outer wall, the lumen shaft of inner spline housing 3 is to the elongated involute inner spline 31 that is processed with.The involute outer spline 11 of first, second external splines, 21 parts, the lumen shaft that is sleeved on inner spline housing 3 is processed with in the involute inner spline 31 to elongated, one end of the first external splines connects brill 5 bars, the other end is provided with circular cone pin thread 12, is connected with circular cone negative thread 22 couplings that the second external splines 2 one end inner chambers are offered.Radially be provided with splined shaft to locating hole 13 on the involute outer spline 11 of the first external splines, corresponding to locating hole 32 with the splined shaft of radially offering on the inner spline housing 3, be connected and fixed by spring cylindrical pin 4; The other end of the second external splines is connected with drill bit shaft 6.Forward creeps into when making drilling rod possess boring, oppositely moves back the bar buffering or takes out the dual-use function of removing drilling rod, and conical inner screw thread then is mainly used to bear the axial connection of drilling rod.
For the ease of installing, involute outer spline 11 is circumferentially with 60 °～90 ° spline assembling pilot angle 14 near a side end of pin thread circular cone on the first external splines 1 outer wall.The end of involute outer spline 21 on the second external splines 2 outer walls is circumferentially with 60 °～90 ° spline assembling pilot angle 23 equally.The lumen shaft of inner spline housing 3 is respectively equipped with 60 °～90 ° spline assembling pilot angles 33 to the two ends of elongated involute inner spline 31.
The outer wall of inner spline housing 3 be provided with drilling rod on spiral stator spiral stator 34 in the same way, be convenient to forward and creep into the outer deslagging of Shi Xiangkong, to the outer end thrust that produces of boring, draw outside holing with the external pull of rig and to move back drilling rod during backward rotation.
The first and second two external splines 1 and an end of 2 adopt respectively the mode of friction welding to be connected with drilling rod, and have through hole at inner chamber, in order to water guide or wind-guiding.
When assembling connects, first inner spline housing 3 is pushed away and install to the side that the first external splines 1 is provided with circular cone pin thread 12, again in circular cone negative thread 22 inner chambers with the first external splines circular cone pin thread precession the second external splines 2 inner chambers, and precession puts in place, and the involute outer spline teeth groove of the first and second two external splines is also aligned thereupon substantially; Then utilize suitable the drawing of the spline assembling pilot angle 33 at inner spline housing 3 involute inner splines 31 two ends, cover installs on the involute spline of the first and second two external splines, and allow locating hole 32 on the inner spline housing 3 and the locating hole 13 on the first external splines 1 align, the spring cylindrical pin 4 of packing into, the joint of just having finished drilling rod and drill bit shaft connects.Remove when connecting, withdraw from first spring and promote 4, again inner spline housing 3 is pushed away the first external splines 1 one sides, oppositely turn round again and move back the connection of yin, yang tapered tread, the joint of two drilling rods is separated.
Claims (5)
1. drilling rod rotating linkage that is used for rig under the coal mine, it is characterized in that: by first, the second external splines and inner spline housing and spring cylindrical pin form, first, the second external splines (1,2) be equipped with involute outer spline (11 on the outer wall, 21), the lumen shaft of inner spline housing (3) is to the elongated involute inner spline (31) that is processed with, first, the involute outer spline part of the second external splines, the lumen shaft that is sleeved on inner spline housing is processed with in the involute inner spline to elongated, one end jointed rod of the first external splines (1), the other end is provided with circular cone pin thread (12), is connected with circular cone negative thread (22) coupling that the second external splines (2) one end inner chambers are offered; Radially be provided with splined shaft on the involute outer spline of the first external splines (11) to locating hole (13), corresponding to locating hole (32) with the splined shaft of radially offering on the inner spline housing, be connected and fixed by spring cylindrical pin (4); The other end of the second external splines is connected with drill bit shaft.
2. a kind of drilling rod rotating linkage for rig under the coal mine according to claim 1, it is characterized in that: involute outer spline (11) is circumferentially with 60 °～90 ° spline assembling pilot angle (14) near circular cone pin thread (12) one side ends on described the first external splines (1) outer wall.
3. a kind of drilling rod rotating linkage for rig under the coal mine according to claim 1, it is characterized in that: the end of involute outer spline (21) on described the second external splines (2) outer wall is circumferentially with the circular cone negative thread that 60 °～90 ° spline assembling pilot angle (23) and an end inner chamber are offered.
4. a kind of drilling rod rotating linkage for rig under the coal mine according to claim 1, it is characterized in that: the lumen shaft of described inner spline housing (3) is respectively equipped with 60 °～90 ° spline assembling pilot angles (33) to the two ends of elongated involute inner spline (31).
5. a kind of drilling rod rotating linkage for rig under the coal mine according to claim 1 is characterized in that: the outer wall of described inner spline housing (3) be provided with drilling rod on spiral stator spiral stator (34) in the same way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445771 CN202850882U (en) | 2012-08-23 | 2012-08-23 | Drill rod right and reverse rotating connection device for underground coal mine drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445771 CN202850882U (en) | 2012-08-23 | 2012-08-23 | Drill rod right and reverse rotating connection device for underground coal mine drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850882U true CN202850882U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220445771 Expired - Fee Related CN202850882U (en) | 2012-08-23 | 2012-08-23 | Drill rod right and reverse rotating connection device for underground coal mine drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850882U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628826A (en) * | 2012-08-23 | 2014-03-12 | 钟鸣远 | Drill rod forward and reverse rotation connecting device for underground coal mine drilling machine |
| CN106014284A (en) * | 2016-07-11 | 2016-10-12 | 钟鸣远 | Spline socket buckling-type mine forward-backward rotating drill stem connector |
| CN110374521A (en) * | 2019-08-07 | 2019-10-25 | 中煤科工集团重庆研究院有限公司 | The mining automatic reassembling type drilling rod of positive and negative rotation |
-
2012
- 2012-08-23 CN CN 201220445771 patent/CN202850882U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628826A (en) * | 2012-08-23 | 2014-03-12 | 钟鸣远 | Drill rod forward and reverse rotation connecting device for underground coal mine drilling machine |
| CN106014284A (en) * | 2016-07-11 | 2016-10-12 | 钟鸣远 | Spline socket buckling-type mine forward-backward rotating drill stem connector |
| CN106014284B (en) * | 2016-07-11 | 2018-06-05 | 钟鸣远 | Rotating tool joint that spline socket joint plug-in is mining |
| CN110374521A (en) * | 2019-08-07 | 2019-10-25 | 中煤科工集团重庆研究院有限公司 | The mining automatic reassembling type drilling rod of positive and negative rotation |
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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: 20130403 Termination date: 20160823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |