CN101864907A - Vibration damper and downhole drill comprising the same - Google Patents
Vibration damper and downhole drill comprising the same Download PDFInfo
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- CN101864907A CN101864907A CN 201010182699 CN201010182699A CN101864907A CN 101864907 A CN101864907 A CN 101864907A CN 201010182699 CN201010182699 CN 201010182699 CN 201010182699 A CN201010182699 A CN 201010182699A CN 101864907 A CN101864907 A CN 101864907A
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Abstract
The invention discloses a vibration damper and a downhole drill comprising the same. The vibration damper comprises a first joint and a second joint, and the first joint and the second joint are respectively provided with a central through hole. The vibration damper is characterized in that the second joint comprises a piston body; the piston body and the first joint can be longitudinally and glidingly matched; a first cavity is formed between one end of the piston body, which faces the first joint, and the first cavity is communicated with the central through hole of the first joint. When the vibration damper is utilized, the second joint compresses high-pressure gas in the first cavity to enable the volume of the first cavity to generate changes, and the high-pressure gas in the first cavity absorbs vibration energy to achieve the goals of buffering and vibration damping; due to the fact that the pressure change of the high-pressure gas is smaller, the change of an acting force transferred to the first joint through the first cavity is smaller, and further, the peak value of an impact force transferred to the first joint by the second joint can be better limited, and the impact vibration is reduced so that the vibration damper has more superior vibration damping effect.
Description
Technical field
The present invention relates to a kind of damping technology, particularly a kind of vibration absorber also relates to a kind of down-the-hole drill that comprises this vibration absorber.
Background technology
Down-the-hole drill is widely used in fields such as ore extraction, engineering construction.Down-the-hole drill has rotary motion mechanism and beater mechanism, and utilizes impactor and the drill bit slip at the bottom of the hole that impact grinding is carried out on predetermined stratum, forms predetermined hole.
In general, the down-the-hole drill equipment mainly comprises drilling cramp, unit head, drilling rod, impactor and drill bit.The drilling rod upper end links to each other with unit head, and the lower end connects impactor, and the impactor lower end is equipped with drill bit.Unit head is installed on the drilling cramp, is used to drive the drilling rod rotation, and drilling rod drives the drill bit rotation again.Piston in the impactor can move back and forth on the bearing of trend of drilling rod, and drill bit is applied predetermined impact power, makes drill bit produce downward impact force, forces drill bit to enter the stratum.Impactor is generally the vapour-pressure type impactor, and ground air pump provides gases at high pressure by drilling rod to impactor, the work of drive of high-pressure gas impactor.
When impactor applies predetermined impact power to drill bit, transmit impact force by drilling rod to unit head equally, make drilling rod, unit head and drilling cramp produce the impact vibration.The boring ability of down-the-hole drill is strong more, and it is big more to transmit impact force by drilling rod to unit head, and the impact vibration of generation is strong more.This impact vibration not only influences the driving efficient of unit head, also can cause the fatigue damage of unit head and drilling cramp, endangers the safe in utilization of down-the-hole drill, reduces the application life of down-the-hole drill.
For reducing the infringement that the impact vibration causes unit head, drilling cramp, current, between drilling rod and unit head, vibration absorber is set usually, to cushion this impact vibration.Prior art discloses multiple vibration absorber.
The disclosed vibration absorber of Chinese patent literature CN101608532A comprises that meeting Pan Hexia connects dish, connect at the last Pan Hexia of connecing one group of elastic mechanism and cushion blocking be set between the dish, and by bolt will on connect dish, elastic mechanism and cushion blocking and couple together.This vibration absorber mainly utilizes the compressive strain of elastic mechanism to absorb vibrational energy, and buffering reduces the impact vibration by the impact force that drilling rod upwards transmits, and then reduces the adverse effect of impact vibration to unit head and drilling cramp.
In the disclosed vibration absorber of Chinese patent literature CN1111066A, utilize the stretching shape distortion of elastic mechanism to absorb vibrational energy, shock absorbing power reduces the impact vibration that drilling rod transmits to unit head.
Though above-mentioned prior art can cushion the impact vibration that drilling rod transmits to unit head to a certain extent, actual effectiveness in vibration suppression is very restricted.Because the frequency of impact of the impactor of down-the-hole drill is in the 10-50Hz scope, the impact vibration variation of upwards transmitting by drilling rod is bigger, impacts comparatively strong; Be difficult to guarantee that rubber or other elastic mechanisms produce suitable deflection, and then make the effectiveness in vibration suppression of vibration absorber be very restricted; In addition, the elastic deformation amount is very limited for the stressed back of rubber or other elastic mechanisms, and the buffer distance that this also limits vibration absorber is very limited its effectiveness in vibration suppression.
Simultaneously, not only transmit longitudinal force between drilling rod and the unit head, also transmit rotary driving force; This just makes vibration absorber force-bearing situation more complicated, and complicated force-bearing situation is very easy to cause rubber or the fatigue failure under shearing force, compressive force and tension of other elastic mechanisms, and then the reliability of vibration absorber is reduced.
Summary of the invention
Therefore, first purpose of the present invention is, a kind of vibration absorber is provided, and to improve effectiveness in vibration suppression, improves its reliability simultaneously.
Providing on the basis of vibration absorber, second purpose of the present invention is, a kind of down-the-hole drill that has this vibration absorber also is provided.
In order to realize above-mentioned first purpose, vibration absorber provided by the invention comprises first joint and second joint, described first joint and second joint have central through hole respectively, difference with the prior art is, described second joint comprises piston body, described piston body can cooperate with longitudinal sliding with first joint, forms first chamber at described piston body between the end of first joint and first joint, and described first chamber communicates with the central through hole of first joint.
Preferably, also form second chamber between described second joint and first joint, described second chamber is positioned at the other end of described piston body.
Preferably, be provided with rubber pad in described first chamber and/or second chamber.
Preferably, have at least one key on one in described first joint and second joint, have the keyway that matches with described key on another, at least one extends longitudinally in described key and the keyway.
Optionally, described second joint also comprises second fittings body, and the described piston body and second fittings body are fixed; Described key is the microscler key that extends longitudinally, and fixes with described second fittings body.
Preferably, described microscler key radially outward stretches out, and has airspace between described microscler key and the described keyway, and described first chamber communicates by the central through hole of described airspace with first joint.
Preferably, a plurality of microscler key of described second fittings body forms spline, and a plurality of keyways on described first joint form spline.
Preferably, also comprise retainer spring, described retainer spring two ends are supported on respectively on described first joint and second joint.
Preferably, described retainer spring is a helical spring, the central lines of described helical spring, the first joint central through hole and the second joint central through hole.
In order to realize that above-mentioned second purpose, down-the-hole drill provided by the invention comprise unit head, vibration absorber and drilling rod, described vibration absorber is above-mentioned any vibration absorber; Described first joint links to each other with unit head, and second joint links to each other with drilling rod, and perhaps, described first joint links to each other with drilling rod, and second joint links to each other with unit head.
In the vibration absorber provided by the invention, form a piston mechanism between second joint and first joint, and at piston body towards formation first chamber between an end of first joint and first joint, and this first chamber is communicated with the central through hole of first joint.Like this, when carrying out bore operation, air pump at the central through hole by first joint and second joint when the impactor of drilling rod lower end is carried gases at high pressure, gases at high pressure enter in first chamber simultaneously, increase towards an end of first joint and the pressure in first chamber between first joint at piston body, make second joint with respect to first joint sliding, and keep a preestablished limit position; When the impactor work of drilling rod lower end, impactor transmits impact force by drilling rod to second joint, produces the impact vibration; Second joint reciprocatingly slides with respect to first joint in the vertical from the preestablished limit position under impact vibration effect, compresses the first chamber inner high voltage gas, and the gases at high pressure volume is changed, and absorbs vibrational energy, realizes the purpose of buffering, vibration damping.Compare with spring of the prior art or other elastomeric elements, second joint is can skidding distance bigger, and the pressure amplitude of the first chamber inner high voltage gas is smaller, and then makes the variation of the pressure variation of the first chamber inner high voltage gas less than elastomeric element elastic force in the prior art; And then, also just smaller by first chamber to the active force variation that first joint transmits, and then can limit the peak value of second joint better to first joint transmission impact force, reduce the impact vibration, make vibration absorber have more excellent effectiveness in vibration suppression.Simultaneously, the high pressure gas in first chamber can be owing to stressed complexity lose efficacy, and then can improve the reliability of vibration absorber.
In further technical scheme, also be provided with second chamber at the other end of piston body, when piston body compresses the gases at high pressure in first chamber, can in second chamber, form negative pressure, absorb the kinetic energy of impact vibration further, improve effectiveness in vibration suppression.
In further technical scheme, in first chamber, rubber pad is set, can when second joint is excessive with respect to the displacement of first joint, makes piston body compressing rubber pad like this, avoid first joint to contact, improve the reliability and the safety of vibration absorber with the rigidity of piston body end face.Equally, in second chamber, be provided with and produce rigidity between the other end that rubber pad also can avoid piston body and first joint and contact the safety of raising vibration absorber.
In further technical scheme, in order to guarantee the transmission of rotation torque, between first joint and second joint, also be provided with key and the keyway that matches, and at least one extends longitudinally to make key and keyway, to guarantee that first joint is when the longitudinal sliding motion, make key and keyway keep cooperating, keep the synchronous rotation of first joint and second joint.
In further technical scheme, described key and piston body are fixed with second fittings body respectively, can make things convenient for the manufacturing of vibration absorber like this, reduce manufacturing cost.
In further technical scheme, described microscler key is positioned at first joint, and is radially overhanging, and has airspace between described microscler key and the described keyway, and described first chamber communicates by the central through hole of described airspace with first joint.This technical scheme can utilize the key and the cooperation of keyway to realize being communicated with between the central through hole of first chamber and first joint, can save the processing of special ventilation device like this, reduces the manufacturing cost of vibration absorber.
In further technical scheme, between first joint and second joint, retainer spring is set; Like this when down-the-hole drill quits work, retainer spring can make first joint and second joint keep released state, avoids causing owing to the relative position of first joint and second joint is uncertain the random play of second joint.In addition,, thereby can facilitate, make things convenient for the installation and debugging of down-the-hole drill for the installation of vibration absorber because retainer spring can provide certain space that moves freely for second joint.
Providing on the basis of above-mentioned vibration absorber, the down-the-hole drill that comprises above-mentioned vibration absorber that provides also has the corresponding techniques effect.
Description of drawings
Fig. 1 is in the vibration absorber that provides of the embodiment of the invention, the structural representation of first joint;
Fig. 2 is in the vibration absorber that provides of the embodiment of the invention, the structural representation of second joint;
Fig. 3 is the overall structure schematic diagram of the vibration absorber that provides of the embodiment of the invention;
Fig. 4 is the perspective view of the vibration absorber that provides of the embodiment of the invention;
Fig. 5 is the explosive view of the vibration absorber that provides of the embodiment of the invention.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
The vibration absorber that embodiment provides comprises first joint 100 and second joint 200.Below the structure of first joint 100 and second joint 200 is described respectively.
Please refer to Fig. 1, this figure is in the vibration absorber that provides of the embodiment of the invention, the structural representation of first joint.First joint 100 comprises that first fittings body 110 and sleeve 120, the first fittings bodies 110 and sleeve 120 are fixed together by securing member; Has central through hole 111 in first fittings body 110.Near first fittings body, 110 end portions, be provided with inner spline groove 112, the central lines of the center line of central through hole 111 and inner spline groove 112.Sleeve 120 lower ends have the limiting plate 121 that inwardly stretches out, and limiting plate 121 forms an opening.
Please refer to Fig. 2, this figure is in the vibration absorber that provides of the embodiment of the invention, the structural representation of second joint.Second joint 200 comprises second fittings body 210 and piston body 220, and piston body 220 is fixed on the fittings body 210, is provided with central through hole 211 in second fittings body 210, and the part near second fittings body, 210 upper ends is provided with external splines 212.
Please refer to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is the overall structure schematic diagram of the vibration absorber that provides of the embodiment of the invention, and Fig. 4 is the perspective view of the vibration absorber that provides of the embodiment of the invention, and Fig. 5 is the explosive view of the vibration absorber that provides of the embodiment of the invention.
Piston body 220 peripheries can cooperate with longitudinal sliding with the internal face of sleeve 120, and piston body 220 can be slided on the O-O direction with respect to sleeve 120, and piston body 220 upper ends are towards first joint 100, and the lower end in the opposite direction.Between the upper end of piston body 220 and first joint 100, form first chamber 221; Simultaneously, external splines 212 matches with the inner spline groove 112 of first fittings body 110, and the structure of this cooperation can make first joint 100 and second joint 200 keep rotation synchronously, and has stronger torque-transfer capability, improves the reliability that the vibration absorber moment of torsion transmits.In this example, have fit clearance between external splines 212 and the inner spline groove 112, this fit clearance comprises gap between key top and the keyway diapire and the gap between key side and the keyway sidewall, this fit clearance formation airspace; First chamber 221 communicates by the central through hole of this airspace with first joint 100; Certainly, can also between external splines 212 each key and corresponding keyway, predetermined airspace be set.
First fittings body, 110 peripheries match with the opening that limiting plate 121 forms, limiting plate 121 can limit the distance that second joint 200 moves down with respect to first joint 100, second joint 200 is limited to the preestablished limit position, makes vibration absorber can keep being connected unit head and drilling rod.
For vibration absorber appearance profile and drilling rod are adapted, as shown in Figure 4, in this example, first joint 100 and second joint 200 are revolving body, and the central lines of the axis of rotation of revolving body and central through hole 211 and central through hole 111.This structure makes vibration absorber have higher integrated level, and adapts with drilling rod, reduces and the miscellaneous part possibility of interference, for installation, debugging and the operation of this vibration absorber provides convenience.
Below link to each other with the unit head of down-the-hole drill with first joint 100, second joint 200 is connected to example with the drilling rod of down-the-hole drill, and is as follows to the operating principle of this vibration absorber:
When carrying out bore operation, the down-the-hole drill air pump is carried gases at high pressure by the central through hole 111 of first joint 100 and the central through hole 211 of second joint 200 to the impactor of drilling rod; Simultaneously, gases at high pressure enter in first chamber 221 by above-mentioned airspace, and second joint 200 is moved down with respect to first joint 100, and the distance that limiting plate 121 restrictions second joint 200 moves down makes second joint 200 be positioned at the preestablished limit position.When the impactor of drilling rod is worked, transmit impact power by drilling rod to second joint 200, second joint 200 moves in the vertical with respect to first joint 100, compress first chamber, 221 inner high voltage gases, the volume of first chamber, 221 inner high voltage gases changes, absorb vibrational energy, realize the purpose of buffering, vibration damping.
Compare with spring of the prior art or other elastomeric elements, utilize gases at high pressure as buffer medium, when the 211 mesohigh gases of piston body 220 compressions first chamber, the displacement that second joint 200 produces with respect to first joint 100 can be bigger, has bigger buffer distance, and the high-pressure gas pressure amplitude of variation in first chamber 211 is smaller, like this, the gases at high pressure in first chamber 211 can absorb more energy when volumetric change, can reduce the impact forces that transmit to first joint 100 in first chamber 211 greatly, and then can limit first joint 100 transmits peak value from impact force to second joint 200 better, reduce the impact vibration, make vibration absorber have more excellent effectiveness in vibration suppression.
In addition, utilize gases at high pressure also to have the following advantages as the vibration absorber of buffer medium:
The first, gases at high pressure have characteristics such as compressible, that density is little, good fluidity, damping are little, and this just can keep the flexibility of vibration absorber buffering vibration, strengthen buffer capacity.
The second, utilize gases at high pressure as buffer medium, gases at high pressure can quick rebound after being subjected to impact compress, and drilling rod is applied active force, and energy is returned to drilling rod; Can make full use of impactor like this and produce power, improve energy utilization ratio, improve bore operation efficient.
Three, gases at high pressure do not have the restriction in fatigue limit and application life, can so just can not improve the reliability of vibration absorber owing to stressed complexity lost efficacy.
Four, utilize the impact force of 200 pairs first joints 100 of high pressure buffer gas second joint, not only can simplify the structure of vibration absorber, reduce production costs, also have gases at high pressure, and then can reduce the use cost of down-the-hole drill significantly owing to can make full use of down-the-hole drill.
As shown in Figure 3, in this example, can also form second chamber 222 between the lower end of sleeve 120 and piston body 220.In the gases at high pressure in piston body 220 compressions first chamber 221, can in second chamber 222, form negative pressure, negative pressure can absorb kinetic energy further, shock absorbing vibration, the effectiveness in vibration suppression of raising vibration absorber.Certainly, the cavity of piston body 220 lower ends is communicated with atmosphere,, reduce the cost of manufacture of vibration absorber to reduce the quality of fit between second fittings body 210 and the limiting plate 121.
Contact for fear of producing rigidity between the lower surface of the upper surface of piston body 220 and first fittings body 110, in first chamber 221, rubber pad 401 is set also.Like this when second joint 200 is excessive with respect to 100 displacements of first joint, piston body 220 upper surfaces will compressing rubber pad 401, avoids first fittings body 110 to contact with piston body 200 rigidity, improves the reliability and the safety of vibration absorber.Equally, in this example, also in second chamber 222, rubber pad 402 is set, produces rigidity between the sleeve 120 with the other end of avoiding piston body 220 and first joint 100 and contact the safety of raising vibration absorber.
According to foregoing description, it will be appreciated by those skilled in the art that, for when working, make in first chamber 221 and be full of gases at high pressure, can also in first fittings body 110 or second fittings body 210, suitable high-pressure channel be set, first chamber 221 is communicated by the central through hole of this high-pressure channel with first joint 110; Certainly, also can first chamber 221 be communicated with the central through hole 111 of first joint 100, to realize purpose of the present invention by other modes such as special pipeline or pipeline are set.
It will be understood by those skilled in the art that to keep first joint 100 and second joint 200 rotation synchronously to be not limited to realize, also can realize by the internal spline and the external splines groove that cooperatively interact by the external splines and the inner spline groove that cooperatively interact.In addition, can also on one in first joint 100 and second joint 200 at least one key be set, the keyway that matches with this key is set on another, also can realize the purpose of the synchronous rotation of two steps, transmission of torque; At this moment, for adapt to second joint 200 with respect to first joint 100 in longitudinal sliding motion, can also make that at least one extends longitudinally in key and the keyway, with at second joint 200 with respect to first joint 100 during in longitudinal sliding motion, keep cooperating of key and keyway; Be appreciated that when the fit clearance of key and keyway can not satisfy the ventilation needs, need between key and corresponding keyway, predetermined airspace be set, so that first chamber 221 communicates by the central through hole of this airspace with first joint 100.
Key and keyway are not limited to above-mentioned position, also can be arranged between piston body 220 peripheries and the sleeve 120, can also be arranged between second fittings body 210 and the sleeve 120.First joint 100 is not limited to comprise the structure of first fittings body 110 and sleeve 120, also can be set to other structures according to actual needs.In addition, also can utilize other torque-transmitting mechanisms transfer torques, as vertically stretching out the bond pad that protuberance cooperates with vertically recessed recess, or the like; As long as can keep the synchronous rotation of the two allowing first joint 100 and second joint 200 to have under the situation of length travel, just can realize purpose of the present invention; Be applied on other equipment that do not need transfer torque or not during the occasion of transfer torque at vibration absorber, can also be with the incomplete structure of transfer torque.
As shown in Figure 3, the vibration absorber that provides in this example also comprises retainer spring 300, and retainer spring 300 two ends are supported on respectively on first fittings body 110 and second fittings body 210.The benefit of this structure is: quit work at down-the-hole drill, when not having gases at high pressure in first chamber 221, retainer spring 300 can make first joint 100 and second joint 200 keep released state, piston body 220 lower ends are contacted with rubber pad 402, avoid second joint 200 with respect to first joint, 100 random plaies.Simultaneously, because retainer spring 300 can make the certain length travel of generation between first joint 100 and second joint 200, position between second joint 200 and first joint 100 is had necessarily move freely the space, and then can facilitate, and make things convenient for the installation and debugging of down-the-hole drill for the installation of vibration absorber.Simultaneously, retainer spring 300 also has the shock absorbing vibration, improves the function of effectiveness in vibration suppression.Retainer spring 300 can have multiple set-up mode, optimized technical scheme is: in the central lines of the central through hole of first joint 100 and second joint 200, retainer spring 300 is a helical spring, makes the central lines of helical spring center line and first joint, 100 central through holes 111; Can reduce first joint 100 and second joint 200 degree of skewness in the vertical like this.
In this example, limiting plate 121 by sleeve 120 lower ends is realized spacing to second joint 200, it will be appreciated by those skilled in the art that, also can realize spacing to second joint 200 by other modes, such as: many ribs that stretch out downwards also can be set, and make the rib lower end have structures such as suitable projection or suspension hook, also can realize spacing to second joint 200, to determine the extreme position of second joint 200.
Providing on the basis of above-mentioned vibration absorber, a kind of down-the-hole drill also is provided, this down-the-hole drill comprises unit head, vibration absorber and drilling rod, described vibration absorber is installed between unit head and the drilling rod, this vibration absorber is above-mentioned any vibration absorber, because above-mentioned vibration absorber has above-mentioned technique effect, down-the-hole drill with this vibration absorber also has the corresponding techniques effect, wherein, first joint 100 can link to each other with unit head, also can link to each other with drilling rod, and is corresponding, second joint 200 can link to each other with drilling rod, also can link to each other with unit head.
The above only is a preferred implementation of the present invention, should be understood that, for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, such as: can more sealing rings be set in piston body 220 and sleeve 120 cooperation places, to guarantee the sealing in first chamber 221; During installation, in first chamber 221, inject less amount of lubrication oil; Install priming cup additional, or the like; These improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. vibration absorber, comprise first joint and second joint, described first joint and second joint have central through hole respectively, it is characterized in that, described second joint comprises piston body, described piston body can cooperate with longitudinal sliding with first joint, forms first chamber at described piston body between the end of first joint and first joint, and described first chamber communicates with the central through hole of first joint.
2. vibration absorber according to claim 1 is characterized in that, also forms second chamber between described second joint and first joint, and described second chamber is positioned at the other end of described piston body.
3. vibration absorber according to claim 2 is characterized in that, is provided with rubber pad in described first chamber and/or second chamber.
4. according to each described vibration absorber of claim 1-3, it is characterized in that, have at least one key on one in described first joint and second joint, have the keyway that matches with described key on another, at least one extends longitudinally in described key and the keyway.
5. vibration absorber according to claim 4 is characterized in that, described second joint also comprises second fittings body, and the described piston body and second fittings body are fixed; Described key is the microscler key that extends longitudinally, and fixes with described second fittings body.
6. vibration absorber according to claim 5 is characterized in that, described microscler key radially outward stretches out, and has airspace between described microscler key and the described keyway, and described first chamber communicates by the central through hole of described airspace with first joint.
7. vibration absorber according to claim 6 is characterized in that, a plurality of microscler key of described second fittings body forms spline, and a plurality of keyways on described first joint form spline.
8. according to each described vibration absorber of claim 1-3, it is characterized in that also comprise retainer spring, described retainer spring two ends are supported on respectively on described first joint and second joint.
9. vibration absorber according to claim 8 is characterized in that, described retainer spring is a helical spring, the central lines of described helical spring, the first joint central through hole and the second joint central through hole.
10. a down-the-hole drill comprises unit head, vibration absorber and drilling rod, it is characterized in that, described vibration absorber is each described vibration absorber of claim 1-9; Described first joint links to each other with unit head, and second joint links to each other with drilling rod, and perhaps, described first joint links to each other with drilling rod, and second joint links to each other with unit head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182699 CN101864907B (en) | 2010-05-26 | 2010-05-26 | Vibration damper and downhole drill comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182699 CN101864907B (en) | 2010-05-26 | 2010-05-26 | Vibration damper and downhole drill comprising the same |
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| Publication Number | Publication Date |
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| CN101864907A true CN101864907A (en) | 2010-10-20 |
| CN101864907B CN101864907B (en) | 2012-09-19 |
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| CN 201010182699 Expired - Fee Related CN101864907B (en) | 2010-05-26 | 2010-05-26 | Vibration damper and downhole drill comprising the same |
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| CN102352728A (en) * | 2011-10-13 | 2012-02-15 | 无锡市安迈工程机械有限公司 | Drilling tool adapter |
| CN102979463A (en) * | 2012-11-11 | 2013-03-20 | 陈海斌 | Damping device for cutting drilling machine unit head |
| CN104863496A (en) * | 2014-12-26 | 2015-08-26 | 襄阳畅勘智能机械有限公司 | Hydraulic high-frequency DTH rock-breaking drill for rotary pile drill hole bottom |
| US9187997B2 (en) | 2012-02-13 | 2015-11-17 | General Downhole Technologies, Ltd. | System, method and apparatus for reducing shock and vibration in down hole tools |
| CN105804671A (en) * | 2016-06-03 | 2016-07-27 | 广东顺德孔山重工机械有限公司 | Drill pipe telescopic type buffer device for down-the-hole drill gyrator |
| CN106089117A (en) * | 2016-07-25 | 2016-11-09 | 山河智能装备股份有限公司 | A kind of hidden hole drilling unit head buffer unit |
| CN106812520A (en) * | 2015-12-01 | 2017-06-09 | 北京环鼎科技有限责任公司 | A kind of guiding buffer unit of Drill-pipe conveyed formula logging instrument |
| CN106988673A (en) * | 2016-10-14 | 2017-07-28 | 力骏机械有限公司 | A kind of damping type air inlet revolving gear |
| CN107620567A (en) * | 2017-09-26 | 2018-01-23 | 长沙黑金刚实业有限公司 | A kind of down-the-hole drill |
| CN108952591A (en) * | 2018-08-03 | 2018-12-07 | 邹城兖矿泰德工贸有限公司 | Powder drilling rod is arranged in dry type |
| CN111749627A (en) * | 2020-07-06 | 2020-10-09 | 重庆三曦科技有限公司 | Drilling rod vibration damper for exploration |
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