CN103261561A - A rock drill bit and a drilling assembly for percussive rock drilling - Google Patents
A rock drill bit and a drilling assembly for percussive rock drilling Download PDFInfo
- Publication number
- CN103261561A CN103261561A CN2011800460419A CN201180046041A CN103261561A CN 103261561 A CN103261561 A CN 103261561A CN 2011800460419 A CN2011800460419 A CN 2011800460419A CN 201180046041 A CN201180046041 A CN 201180046041A CN 103261561 A CN103261561 A CN 103261561A
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- rock bit
- tooth
- ball tooth
- rock
- hole
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- 239000011435 rock Substances 0.000 title claims abstract description 135
- 238000005553 drilling Methods 0.000 title claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 8
- 230000002262 irrigation Effects 0.000 claims description 7
- 238000003973 irrigation Methods 0.000 claims description 7
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A rock drill bit (30) for percussive drilling comprises a bit head configured to be attached at an end of a drill element (33) of a drilling assembly and having a diameter larger than that of said drill element. The bit head has at a front end (38) as seen in the intended drilling direction a plurality of buttons (41) distributed over said bit head and configured to engage material to be crushed. At least one of said buttons is allowed to rotate about its own symmetry axis.
Description
Technical field
The present invention relates to a kind of rock bit for the impact type Drilling and be used for Drilling assembly according to the impact type rock machining of the preamble of independent claims, these rock bit comprise: drill bit head, the diameter that this drill bit head is configured to be attached at the place, end of Drilling element of Drilling assembly and this drill bit head is bigger than the diameter of this Drilling element, on the Drilling direction of intention, this drill bit head has a plurality of ball teeth at the front end place, this ball tooth is distributed on this drill bit head and is configured to engage material to be broken.
Background technology
Though the invention is not restricted to the Drilling assembly of these rock bit of use of any kind, but the former can be as the down-the-hole hammer drill of top hammer drill (top hammer drill) (down-the-hole hammer drill), although shown rock bit especially are intended to for back one type.
In addition, these rock bit can have any size that can expect and have 30 millimeters to 300 millimeters diameter usually.The design frequency of impact in operation of rock bit and rotating speed are equally without limits, but what may mention is that they usually go in 500 rpms the scope at 20 hertz to 100 hertz and 20 respectively, but the present invention is not precluded within the high frequency assembly of operating under the frequency more than 250 hertz and uses rock bit, and this frequency can reach and surpasses 1 KHz.
The known so-called standard rock bit 1 of the type that limits in the foreword are described with reference to Fig. 1 and Fig. 2.This drill bit has drill bit head 2, and what this drill bit head 2 was configured to be attached at the Drilling assembly is the end of the Drilling element of form with drilling pipe or drilling rod for example, and the diameter of this drill bit head 2 is bigger than the diameter of this Drilling element.Although not shown this Drilling element in these accompanying drawings, this Drilling element can be designed to be received within the so-called skirt section 3, and this skirt section 3 becomes one with drill bit head and has the diameter littler than drill bit head.The alternate manner that makes drill bit be connected to the Drilling element be can expect and be well known in the art.On the Drilling direction of intention, drill bit head has a plurality of standard ball teeth 5 at front end 4 places, and this standard ball tooth 5 is distributed around drill bit ball tooth head 2.The standard ball tooth is configured to engage material to be broken and the diameter of hole 6 (see figure 1)s determining to be come out by the rock bit Drilling.These standard ball teeth are made by hard material such as carbide alloy or tungsten carbide.The same forecourt tooth of being made by hard material 7 is disposed on the front surface 8, to engage material to be broken.Also show and forwardly locate the irrigation channel that opens wide by the flushing hole 9 in the front surface.
In operation, standard ball tooth 5 can engage the also rock of the hole wall in broken close hole 6, rock bit are arranged in this hole 6 with described drilling rod, and forecourt tooth 7 can come the rock of the central authorities in broken close this hole by the bump of being carried out in the arrow A direction by rock bit.Between each such bump, drill bit can rotate a little, rotates about 5 ° usually.
The operating efficiency of the rock bit of the type yes important feature, and this can be expressed as the speed that runs through of rock bit, this runs through the length that speed is restricted to the hole that the time per unit Drilling goes out (rice/minute).The speed that runs through of the known rock bit of the type depends on the particularly abrasion of standard ball tooth of this ball tooth.Represented among Fig. 2 that in this rock bit operating periods material is by in the wearing and tearing of the periphery of standard ball tooth, produced flat surfaces 10 thereby form in this periphery, this flat surfaces 10 does not make the standard ball tooth sharper and reduce to run through speed.In the operating period of rock bit, it is big that these flat surfaces 10 can become, and finally cause the diameter in the hole that gone out by the Drilling that this standard ball tooth is determined to reduce a lot, and making must the replacing rock bit.Certainly, the present invention is making great efforts to increase the running through speed and prolong application life of these rock bit of rock bit of the type that limits in the foreword.
Summary of the invention
The rock bit that the purpose of this invention is to provide the type that limits in a kind of foreword have improved these rock bit at least in one aspect with respect to known this rock bit.
According to the present invention, realize this purpose by following this rock bit are provided: in these rock bit, at least one the ball tooth in this ball tooth is configured to or is allowed to around the rotation of it self the axis of symmetry.By making at least one ball tooth rotatably be engaged in the drill bit head, this ball tooth can be in Drilling rotation by the bump of drill bit head and rock bit change over around it self axis of symmetry rotation, make this ball tooth can change with the rock engaging portion and this ball tooth can be worn away and be able to sharpening (self-sharpened) voluntarily equably.This means that this ball tooth can be big owing to being fixed on the contribution of keeping in the drill bit head rock bit that runs through speed from the sharpening effect than it.
According to embodiments of the invention, these a plurality of ball teeth comprise the standard ball tooth, this standard ball tooth is distributed around this drill bit head, and be configured to the diameter in the hole determining to be gone out by the rock bit Drilling, at least one the standard ball tooth in this standard ball tooth is configured to or is allowed to around it self axis of symmetry rotation.This means that this standard ball tooth can be owing to should keep it for the contribution that runs through speed of rock bit from the sharpening effect, be worn away many diameters in this hole that definite thus Drillings go out that make up to this standard ball tooth and reached minimum acceptable level.Yet this can be made the application life that also can prolong rock bit by long with respect to the time of the fixing cost of drill bit head than this at least one standard ball tooth.
According to another embodiment of the invention, rock bit comprise first member, this first member has roughly circumferential ring surface, on the Drilling direction of intention, this ring surface defines the somewhat frusto-conical shape, and this at least one standard ball tooth has base portion, and this base portion is shelved on and is configured to transmit on this ring surface of impact to the standard ball tooth, and allows this base portion mobile at this annular surface when rotated.Coming to transmit impact to the standard ball tooth by this surface on this base portion that acts on this at least one standard ball tooth can improve the efficient of bump and reduce stress on this standard ball tooth.
According to another embodiment of the invention, rock bit comprise second member, this front end of this this drill bit head of second component limit also has a plurality of standard ball teeth that extend this second member, and at least one standard ball tooth of this that is allowed to rotate is disposed in the hole in this second member and is allowed to and moves with respect to the hole wall that limits this hole when rotated.
Another embodiment according to the further progress of the last-mentioned embodiment of formation of the present invention, the base portion of at least one standard ball tooth of this that is allowed to rotate has the cross section bigger than the remainder of standard ball tooth, and the cross-sectional area that at least a portion in this hole in this second member has is littler than the cross-sectional area of this base portion, is received within this second member to keep the standard ball tooth.By with the such base portion of the arranged in form of shoulder, this at least one standard ball tooth can be maintained in this second member of rock bit reliably, is allowed to rotation simultaneously.
According to another embodiment of the invention, this hole is through hole, and on the Drilling direction of intention, this standard ball tooth is arranged to make the base portion of this standard ball tooth to be on the rear side in this hole.
According to another embodiment of the invention, this first member has the device that is configured to this first member is fixed to this Drilling element.This means this first member by this ring surface is provided to transmit impact to this at least one standard ball tooth, rock bit can be fixed to the Drilling element.
According to another embodiment of the invention, rock bit have this first member and second member simultaneously, and comprise the device that is configured to this second member is fixed to this first member, this means that this ring surface can be located at the inside of the drill bit head at this second member rear.According to another embodiment of the invention, this device that is configured to this second member is fixed to this first member is configured to releasably be made these members fastened to each other, this means when the diameter of being determined by the standard ball tooth and reached least limit and when keeping this first member simultaneously, second member with standard ball tooth can be removed and change, make and to change whole rock bit, thereby save cost.
According to another embodiment of the invention, this first member is ring, and this ring is configured to be supported on and/or is fixed to the end of this Drilling element.If rock bit also comprise following device, this device is used for this second member fixed and fixes and these rock bit are fixed to this Drilling element by this, and then so-called throw-out collar has special importance and causes the simple structure of rock bit.It in this case, although both needn't being fixed to the Drilling element, first member also needn't be fixed to this second member, in can keep in position by this second member.
According to another embodiment of the invention, major part in this standard ball tooth is allowed to around the rotation of they self the axis of symmetry, and according to a further embodiment of the invention, this standard ball tooth of all of rock bit is allowed to around the rotation of they self the axis of symmetry.The standard ball tooth of arranging like this in the standard ball tooth is more many, then arranges the standard ball tooth in order to make its advantage that is allowed to rotate just more big, thus cause rock bit this prolongation application life and keep the high speed that runs through in the long period.
According to another embodiment of the invention, this drill bit head has front surface, and this front surface is provided with a plurality of forecourt teeth of engaging with material to be broken of being configured to.Although these forecourt teeth can be fixed with respect to this front surface, but according to another embodiment of the invention, at least one forecourt tooth in this forecourt tooth is allowed to around the rotation of it self the axis of symmetry, this can cause the even wear of this forecourt tooth and moving from sharpening by this forecourt tooth, thereby by the situation fixing with respect to this front surface of drill bit head, this forecourt tooth can more effectively be carried out its task and execute the task in the longer time than this forecourt tooth.
According to another embodiment of the invention, this at least one forecourt tooth has the design similar design with this at least one standard ball tooth, and this second member is configured to admit this at least one forecourt tooth similarly with this at least one standard ball tooth.
According to another embodiment of the invention, most of or this all forecourt tooth in this forecourt tooth is allowed to around they self axis of symmetry rotation.
According to another embodiment of the invention, rock bit comprise irrigation channel, this irrigation channel extends through this drill bit head and has at least one flushing hole, and this flushing hole is opened at this front end place and by by around at least one this ball tooth of it self axis of symmetry rotation.At the ball tooth when it is received within the inside rotation in the hole in this drill bit head, by scouring media such as water is flowed around this ball tooth that is allowed to rotate, will keep this drill bit head and allow surface and the space of the ball tooth of this rotation to clean, eliminate any abrasion problem simultaneously.
According to another embodiment of the invention, at least one ball tooth of this that is allowed to rotate is disposed in the hole in this drill bit head, and be allowed to move with respect to the hole wall that limits this hole when rotated, this at least one ball tooth is provided with circumferential cannelure, this hole wall that limits this hole has the matrix member, and rock bit comprise and are configured to the device that engages with this groove and this matrix member, make this ball tooth is locked in this hole, allow this ball tooth spiral commentaries on classics simultaneously.This is to lock the preferred and simple mode that this ball tooth allows this ball tooth to rotate freely simultaneously with respect to this drill bit head.
According to another embodiment of the invention, this matrix member is the cannelure in this hole wall, and this coupling device comprises the ring that elastomeric material is made.This allows to be easy to compress this ring in this hole simultaneously this ball tooth is installed in this hole by this ball tooth is pushed to, when this cannelure of arriving in this hole wall, this ring can expand and the ball tooth is locked in the appropriate position in allow it to rotate freely simultaneously.
According to another embodiment of the invention, this coupling device comprises pin, and this pin is configured to be pushed to this groove and neutralizes in this matrix member, and being fixed with respect to this drill bit head, and this pin is locked in this ball tooth to allow this ball tooth spiral to change in this hole simultaneously.By simple device, this stop pin also can provide and allow this ball tooth to rotate freely simultaneously the positive lock of this ball tooth in this hole of drill bit head.
The invention still further relates to a kind of Drilling assembly, according to the appended independent claims of this assembly, this Drilling assembly is used for the impact type rock machining.This Drilling assembly makes it possible to carry out rock machining with high drill chisel speed in the long period, and changes rock bit of the present invention more infrequently with respect to this Drilling assembly that uses known rock bit simultaneously.
The invention still further relates to a kind of being used for to the use of the impact type rock machining of face of land material such as rock according to rock bit of the present invention.
According to the following description, can present the further advantage of the present invention and favorable characteristics.
Description of drawings
With reference to the accompanying drawings, below be the specific descriptions that are cited as the embodiment of example of the present invention.
In the accompanying drawings:
Fig. 1 is the very easy view according to the rock bit in operation of prior art,
Fig. 2 is the phantom drawing according to the rock bit after certain operating time of prior art,
Fig. 3 is the phantom drawing that illustrates according to the principle of rock bit of the present invention,
Fig. 4 shows the longitudinal section of passing according to the part of the rock bit in operation of the first embodiment of the present invention,
Fig. 5 is the exploded view according to the rock bit of Fig. 4,
Fig. 6 is the view corresponding with Fig. 4 of rock bit according to a second embodiment of the present invention,
Fig. 7 is the exploded view according to the rock bit of Fig. 6,
Fig. 8 is the simple diagram corresponding with Fig. 4 of the rock bit of a third embodiment in accordance with the invention,
Fig. 9 is the simple diagram of the ball tooth that is allowed to rotate in drill bit head of the rock bit of a fourth embodiment in accordance with the invention, and
Figure 10 is the very easy view that is used for the Drilling assembly of impact type rock machining in operation according to an embodiment of the invention.
The specific embodiment
Fig. 3 schematically shows the principle according to rock bit of the present invention very much, in these rock bit, as observing in the Drilling direction of intention, by being received within the roughly circumferential ring surface 23 that defines the somewhat frusto-conical shape respectively and in the hole 22 in the front surface 24, all standard ball teeth 20 and all forecourt teeth 21 are configured to or are allowed to around they self axis of symmetry rotation.The ball tooth is preferably that tungsten carbide makes.
Now in reference to figure 4 and Fig. 5, the rock bit 30 according to the first embodiment of the present invention are described.Rock bit comprise first member 31, and this first member 31 has roughly circumferential ring surface 32, and as observing in the Drilling direction of intention, this circumferential hoop surface 32 defines the somewhat frusto-conical shape.This first member 31 is provided with and is configured to make this first member to be fixed to the device of Drilling element 33, in this first member 31, this fastening devices is formed by the cannula-like part 34 that is provided with first member 31 of the coupling device of the form of internal thread 35, and this coupling device is constructed on the Drilling element to engage with coupling device with the form of external screw thread 36.
Rock bit further comprise second member 37, and this second member 37 defines the front end 38 of the drill bit head 39 of rock bit.Second member is provided with a plurality of through holes 40, and this through hole 40 admits standard ball teeth 41 and forecourt tooth 42 to allow standard ball tooth 41 and forecourt tooth 42 around they self axis of symmetry rotation simultaneously.The diameter of through hole 40 all is received in the diameter of each ball tooth in the through hole 40 just over (poor at 30 microns diameters to 80 micrometer ranges suitably), move with respect to the hole wall 43 in this hole of restriction in second member 37 when rotated to allow the ball tooth.Yet, in the embodiment shown in this figure and Fig. 6, exaggerated difference and the following difference of describing this diameter of this diameter, so that this feature to be described better.Standard ball tooth and forecourt tooth are provided with has base portion 44, and this base portion 44 has than the remainder of ball tooth and the cross section bigger than each hole 40, in order to keep the ball tooth that is received in second member.
Rock bit comprise the device 46 that is configured to second member 37 is fixed to first member 31.Fastening devices preferably is configured to make these members releasably to interfix, for example by making them fastened to each other by means of the screw thread combination.Then, this can mean, can the ball tooth be worn away so much make must change them after, remove second member that this has the ball tooth, keep first member simultaneously in order to change.Welding or interference fit (press fitting) are other possible substituting modes that is easy to realize of this fastening devices 46.
As shown in Figure 4, when carrying out the impact type Drilling with the rock bit shown in Fig. 4 and Fig. 5, the ball tooth of rock bit can be allowed to around the rotation of they self axis, this means that standard ball tooth 41 can be by the sharpness that wears away and keep them equably, make and can keep the high speed that runs through in a segment length time period, the diameter that is limited by the standard ball tooth in hole can reduce slowly than the situation that standard ball tooth can be fixedly placed in the drill bit head.
Fig. 6 and Fig. 7 show rock bit 50 according to a second embodiment of the present invention.First member 51 of the form that these rock bit have to encircle, this first member 51 is configured to be supported on the end 52 of Drilling element 53 and/or is fixed to the end 52 of Drilling element 53, and this first member 51 has ring surface 54, and this ring surface 54 is formed for the support of the base portion 55 of each standard ball tooth 56 in the mode identical with the corresponding surface 32 among the embodiment shown in Fig. 4 and Fig. 5.Therefore, impact can be passed this surface and is passed to the standard ball tooth, and the base portion of this standard ball tooth is allowed to mobile on this surface when rotated simultaneously.
In the present embodiment, second member 57 is provided with following device, this device is designed to admit the Drilling element to come for this member is fixed to Drilling element 53 by making canular part 61, and second member 57 has the coupling device with the form of internal thread 62, this coupling device is used for engaging with coupling device with the form of the external screw thread 63 on the Drilling element, to be used for releasably making this second member be fixed to the Drilling element, and pass through like this, make this ring 51, be so-called throw-out collar, keep in position.First member 51 is provided with back-up ring 64, so that first member 51 and second member 57 are relative to each other fixing, leaves gap 66 simultaneously between first member 51 and second member 57, so that the ball tooth rotates freely.Suitable flushing to the ball tooth that is allowed to rotate also is important.Represented that in Fig. 6 rock bit have normal developing passage 67, this irrigation channel 67 extends through drill bit head.Irrigation channel also has at least one flushing hole 68 (observing the arrow F that flows of expression scouring media), this flushing hole 68 first end 60 places open and by gap 66 and the ball tooth 56 that is allowed to rotate around.This can keep this gap 66 unimpeded, and eliminates the abrasion problem at the ball tooth in the rotation of the inside in hole 58.According to the above discussion of particularly first embodiment of the present invention, clearly presented this embodiment of the present invention function in operation.
In Fig. 8, schematically show very much the part of the rock bit of a third embodiment in accordance with the invention.These rock bit are provided with alternative device, and it allows the ball tooth spiral to change in order to ball tooth 80 is locked onto drill bit head 81 simultaneously.Being designed in the drill bit head admits the blind hole 82 of ball tooth 80 to be provided with cannelure 83, and ball tooth 80 is provided with corresponding cannelure 84, and this corresponding cannelure 83 is admitted elastic locking ring 85, and the ring that for example is formed from steel encircles such as C shape.When ball tooth 80 was pushed in the hole 82, locking ring at first can be compressed, till the groove 83 in reaching drill bit head.Then, locking ring can outwards expand in this groove and with the ball tooth and lock onto drill bit head 81, allows the ball tooth spiral to change simultaneously.
Fig. 9 illustrates ball tooth 90 is locked onto the alternative method that unshowned drill bit head allows the ball tooth spiral to change simultaneously in the rock bit of a fourth embodiment in accordance with the invention.This realizes by the ball tooth 90 with cannelure 91 among the embodiment as shown in Figure 8 is provided.Yet, used stop pin 92 to replace locking ring, after in the hole that ball tooth 90 is pushed to the correspondence in the drill bit head, during this stop pin is pushed to and simultaneously the ball tooth is locked in the appropriate position in the groove 91, and also allow the ball tooth around the rotation of it self the axis of symmetry.
Figure 10 very schematically illustrates according to the Drilling assembly for the impact type rock machining of the present invention, and this Drilling assembly has the rock bit 70 that are provided with standard ball tooth 71 according to an embodiment of the invention.This Drilling assembly is the so-called top hammer drill that acts on from the position more than the ground on the rock bit, this Drilling assembly has power set 72 such as Diesel engine and hydraulic pump, these power set 72 are configured to drive rock machining machine (rock drill) 76, and 76 in this rock machining machine makes this Drilling element 73 and rock bit rotation and carries out impact and pass through such fractured rock.The Drilling assembly as the design of down-the-hole hammer drill equipment also within the scope of the invention.
The Drilling assembly also has device 74 such as compressed air generator, and this device 74 is configured to wash the drilling cuttings that leaves the zone that is occupied by drill bit from the joint of the standard ball tooth of drill bit and forecourt tooth.The Drilling assembly has control device 75, and this control device 75 is configured to control the operation of power set 72, with frequency and the rotary speed of the bump of adaptive drill bit.Verified, according to of the present invention have be allowed to along the drill bit of the ball tooth of the axis of symmetry of following ball tooth self rotation be suitable for use in particularly well be controlled so as to have surpass 250 hertz, preferably surpass 350 hertz and most preferably be in the Drilling assembly of the frequency in 350 hertz to 1000 hertz scope.
With according to Fig. 8 have Drilling assembly according to rock bit of the present invention carry out Drilling can be than the efficient height that has with known rock bit, this is because running through speed can be remained at a high speed more longways, and required the stopping of parts of rock bit or rock bit can take place to be used for changing than small frequency.
Preferably, the base portion of each rotatable ball tooth abuts against the bottom in hole and shelves or contact with the bottom in hole, transmitting impact to the ball tooth, and allows base portion mobile in the bottom when rotated simultaneously.
Certainly, the present invention is not limited to the above embodiments by any way, but as limiting in appended claims, without departing from the scope of the invention, the various possibilities of modification of the present invention are apparent for one of ordinary skill in the art.
The number of the ball tooth of rock bit can be very different with the position with respect to the embodiment shown in the figure.
As shown in FIG., also contain situation when cutting recess or groove and/or standard ball tooth are crossing with ring " roughly " of using in word " somewhat frusto-conical shape " and " the roughly circumferential hoop ".
The application requires the disclosure among the european patent application No.10178387.6 of priority to incorporate this paper by reference into.
Claims (24)
1. rock bit (30,50) that are used for the impact type Drilling comprise drill bit head (39), described drill bit head (39) is configured to be attached at the place, end of the Drilling element (33,53) of Drilling assembly, and the diameter of described drill bit head (39) is bigger than the diameter of described Drilling element, on the Drilling direction of intention, described drill bit head locates to have a plurality of ball teeth (41,42 at front end (38,60), 56,59,80,90), described ball tooth (41,42,56,59,80,90) be distributed on the described drill bit head and be configured to and engage with material to be broken, it is characterized in that described ball tooth (41,42,56,80,90) at least one the ball tooth in is allowed to around the rotation of it self the axis of symmetry.
2. rock bit according to claim 1 is characterized in that, described a plurality of ball teeth comprise standard ball tooth (41,56,80,90), described standard ball tooth (41,56,80,90) around described drill bit head (39,81), distribute, and be configured to determine the diameter in the hole that got out by described rock bit, and described standard ball tooth (41,56,80,90) at least one the standard ball tooth in is allowed to around the rotation of it self the axis of symmetry.
3. rock bit according to claim 2, it is characterized in that, described rock bit comprise first member (31,51), described first member (31,51) has roughly circumferential ring surface (32,54), on the Drilling direction of intention, described ring surface (32,54) define the somewhat frusto-conical shape, and, described at least one standard ball tooth (41,56) has the base portion (44 that is shelved on the described ring surface, 55), described base portion (44,55) is configured to impact is delivered to described standard ball tooth and allow described base portion mobile at described ring surface when rotated.
4. according to claim 2 or 3 described rock bit, it is characterized in that, described rock bit comprise second member (37,57), described second member (37,57) the described front end (38 of the described drill bit head of restriction, 60) and have described a plurality of standard ball teeth (41,56) that extend described drill bit head, and, described at least one the standard ball tooth that is allowed to rotate is disposed in the hole (40,58) in described second member and is allowed to and moves with respect to the hole wall that limits described hole when rotated.
5. rock bit according to claim 4, it is characterized in that described at least one the standard ball tooth (41,56) that is allowed to rotate has base portion (44,55), the cross section of described base portion (44,55) is bigger than the cross section of the remainder of described standard ball tooth, and, described second member (37, the cross-sectional area of at least a portion in the described hole (40,58) 57) is littler than the cross-sectional area of described base portion, is received within described second member in order to keep described standard ball tooth.
6. rock bit according to claim 5 is characterized in that, described hole (40,58) are through holes, and described standard ball tooth (41,56) is arranged to, and on the Drilling direction of intention, its base portion (44,55) are positioned on the rear side in described hole.
7. according to claim 3 or be subordinated to each described rock bit in the claim 4 to 6 of claim 3, it is characterized in that, described first member (31) has the device (34,35) that is configured to described first member is fixed to a described Drilling element (33).
8. according to claim 4 and 7 described rock bit, it is characterized in that described rock bit comprise the device (46) that is configured to described second member (37) is fixed to described first member (31).
9. rock bit according to claim 8 is characterized in that, the described device (46) that is configured to described second member (37) is fixed to described first member (31) is constructed such that described first and second members are releasably fastened to each other.
10. according to claim 3 or be subordinated to each described rock bit in the claim 4 to 6 of claim 3, it is characterized in that, described first member is ring (51), and the end (52) of a described Drilling element (53) is gone up and/or be fixed in the end (52) that described ring (51) is configured to be supported on a described Drilling element (53).
11. according to each the described rock bit in claim 4 to 6 and 10, it is characterized in that, described rock bit comprise following device (61,62), described device (61,62) be used for fixing described second member (57), and by so described rock bit being fixed a described Drilling element (53).
12. each the described rock bit according in the claim 2 to 11 is characterized in that, the great majority in the described standard ball tooth (41,56,80,90) are allowed to around the rotation of they self the axis of symmetry.
13. each the described rock bit according in the claim 2 to 12 is characterized in that, all described standard ball teeth (41,56,80,90) of described rock bit are allowed to around the rotation of they self the axis of symmetry.
14. each the described rock bit according in the aforementioned claim is characterized in that described drill bit head has front surface, described front surface is provided with a plurality of forecourt teeth (42,59), and described forecourt tooth (42,59) is configured to engage with material to be broken.
15. rock bit according to claim 14 is characterized in that, at least one the forecourt tooth (42) in the described forecourt tooth is allowed to around the rotation of it self the axis of symmetry.
16. according to each the described rock bit in claim 4 to 6 and 15, it is characterized in that, described at least one forecourt tooth (42) has the design similar design with described at least one standard ball tooth (41), and described second member (37) is configured to admit and similar described at least one the forecourt tooth of described at least one standard ball tooth.
17., it is characterized in that the most of or all described forecourt teeth in the described forecourt tooth (42) are allowed to around they self axis of symmetry rotation according to claim 15 or 16 described rock bit.
18. according to each the described rock bit in the aforementioned claim, it is characterized in that, described rock bit comprise irrigation channel (67), described irrigation channel (67) extends through described drill bit head (39) and has at least one flushing hole (68), and described flushing hole (68) is opened wide at described front end place and by being allowed to around at least one described ball tooth (56) of it self axis of symmetry rotation.
19. according to claim 1,2,12 to 15, the described rock bit of in 17 and 18 each, it is characterized in that, described at least one the ball tooth that is allowed to rotate is disposed in the hole (82) in the described drill bit head (81) and is allowed to and moves with respect to the hole wall that limits described hole when rotated, described at least one ball tooth is provided with circumferential cannelure (84,91), the described hole wall that limits described hole has matrix member (83), and described rock bit comprise and are configured to the device (85 that engages with described groove (84) and described matrix member (83), 92), allow described ball tooth spiral to change in the described hole simultaneously in order to described ball tooth is locked in.
20. rock bit according to claim 19 is characterized in that, described matrix member is the cannelure (84) in the described hole wall, and described coupling device comprises the ring (85) that elastomeric material is made.
21. rock bit according to claim 19, it is characterized in that, described coupling device comprises pin (92), described pin (92) be configured to be pushed in the described groove (91) and described matrix member in, being fixed with respect to described drill bit head, and described pin (92) is configured to described ball tooth (90) is locked in and allows described ball tooth spiral to change in the described hole simultaneously.
22. a Drilling assembly that is used for the impact type rock machining comprises: rock bit (70); Power set (72), described power set (72) are configured to act on the described rock bit in order to make described rock bit rotation and carry out bump, to engage with material to be broken; And control device (75), described control device (75) is configured to control the operation of described power set, it is characterized in that, and described rock bit are according to each the described rock bit in the claim 1 to 21.
23. Drilling assembly according to claim 22, it is characterized in that, described control device (75) is configured to control described power set (72), to obtain to surpass frequency 250 hertz, that surpass described bump 350 hertz or in 350 hertz to 1000 hertz scope.
24. according to the purposes of each the described rock bit (30,50) in the claim 1 to 21, be used for to the face of land, such as the impact type Drilling of rock.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10178387.6A EP2434086B1 (en) | 2010-09-22 | 2010-09-22 | A rock drill bit and a drilling assembly for percussive rock drilling |
| EP10178387.6 | 2010-09-22 | ||
| PCT/EP2011/066114 WO2012038342A1 (en) | 2010-09-22 | 2011-09-16 | A rock drill bit and a drilling assembly for percussive rock drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103261561A true CN103261561A (en) | 2013-08-21 |
Family
ID=43500325
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800460419A Pending CN103261561A (en) | 2010-09-22 | 2011-09-16 | A rock drill bit and a drilling assembly for percussive rock drilling |
| CN2011800460438A Pending CN103339339A (en) | 2010-09-22 | 2011-09-20 | A rock drill bit for percussive drilling and a rock drill bit button |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800460438A Pending CN103339339A (en) | 2010-09-22 | 2011-09-20 | A rock drill bit for percussive drilling and a rock drill bit button |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US20130180784A1 (en) |
| EP (2) | EP2434086B1 (en) |
| KR (2) | KR20140005880A (en) |
| CN (2) | CN103261561A (en) |
| AU (3) | AU2011304461B2 (en) |
| BR (2) | BR112013006621A2 (en) |
| CA (2) | CA2811674A1 (en) |
| RU (1) | RU2571783C2 (en) |
| WO (2) | WO2012038342A1 (en) |
| ZA (1) | ZA201302143B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2586960B1 (en) * | 2011-10-27 | 2016-01-13 | Sandvik Intellectual Property AB | Drill bit having a sunken button and rock drilling tool for use with such a drill bit |
| US9759014B2 (en) | 2013-05-13 | 2017-09-12 | Baker Hughes Incorporated | Earth-boring tools including movable formation-engaging structures and related methods |
| EP2921639A1 (en) | 2014-03-18 | 2015-09-23 | Sandvik Intellectual Property AB | Percussive drill bit with multiple sets of front cutting inserts |
| US10502001B2 (en) | 2014-05-07 | 2019-12-10 | Baker Hughes, A Ge Company, Llc | Earth-boring tools carrying formation-engaging structures |
| US9359826B2 (en) | 2014-05-07 | 2016-06-07 | Baker Hughes Incorporated | Formation-engaging structures having retention features, earth-boring tools including such structures, and related methods |
| US9476257B2 (en) | 2014-05-07 | 2016-10-25 | Baker Hughes Incorporated | Formation-engaging assemblies and earth-boring tools including such assemblies |
| US10494871B2 (en) | 2014-10-16 | 2019-12-03 | Baker Hughes, A Ge Company, Llc | Modeling and simulation of drill strings with adaptive systems |
| MX2017012209A (en) * | 2015-03-26 | 2018-01-23 | Sandvik Intellectual Property | A rock drill button. |
| US10273759B2 (en) | 2015-12-17 | 2019-04-30 | Baker Hughes Incorporated | Self-adjusting earth-boring tools and related systems and methods |
| US10508323B2 (en) | 2016-01-20 | 2019-12-17 | Baker Hughes, A Ge Company, Llc | Method and apparatus for securing bodies using shape memory materials |
| US10487589B2 (en) | 2016-01-20 | 2019-11-26 | Baker Hughes, A Ge Company, Llc | Earth-boring tools, depth-of-cut limiters, and methods of forming or servicing a wellbore |
| US10280479B2 (en) | 2016-01-20 | 2019-05-07 | Baker Hughes, A Ge Company, Llc | Earth-boring tools and methods for forming earth-boring tools using shape memory materials |
| US10633929B2 (en) | 2017-07-28 | 2020-04-28 | Baker Hughes, A Ge Company, Llc | Self-adjusting earth-boring tools and related systems |
| GB201800250D0 (en) * | 2018-01-08 | 2018-02-21 | Element Six Gmbh | Drill bit with wearshield |
| EP3696368B1 (en) * | 2019-02-15 | 2023-10-11 | Sandvik Mining and Construction Tools AB | Insert for a journal leg of a rotary drill tool |
| CN112211566A (en) * | 2020-10-30 | 2021-01-12 | 中国建筑第四工程局有限公司 | Manual hole digging pile hole forming method for tunneling large-particle-size moderately weathered nuclei |
| USD1044894S1 (en) * | 2022-07-09 | 2024-10-01 | Zhejiang Pulanka Rock Tools Co., Ltd. | Button drill bit |
| USD1046584S1 (en) * | 2022-09-16 | 2024-10-15 | Boart Longyear Company | Drill bit |
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- 2011-09-16 CA CA2811674A patent/CA2811674A1/en not_active Abandoned
- 2011-09-16 KR KR1020137010145A patent/KR20140005880A/en not_active Application Discontinuation
- 2011-09-16 US US13/825,416 patent/US20130180784A1/en not_active Abandoned
- 2011-09-16 AU AU2011304461A patent/AU2011304461B2/en not_active Expired - Fee Related
- 2011-09-16 WO PCT/EP2011/066114 patent/WO2012038342A1/en active Application Filing
- 2011-09-16 BR BR112013006621A patent/BR112013006621A2/en not_active IP Right Cessation
- 2011-09-16 CN CN2011800460419A patent/CN103261561A/en active Pending
- 2011-09-20 AU AU2011304382A patent/AU2011304382B2/en not_active Ceased
- 2011-09-20 CA CA2812600A patent/CA2812600A1/en not_active Abandoned
- 2011-09-20 KR KR1020137010147A patent/KR20140009149A/en not_active Application Discontinuation
- 2011-09-20 EP EP11757880.7A patent/EP2619396A1/en not_active Withdrawn
- 2011-09-20 BR BR112013006623A patent/BR112013006623A2/en not_active IP Right Cessation
- 2011-09-20 US US13/825,533 patent/US20130180785A1/en not_active Abandoned
- 2011-09-20 RU RU2013118269/03A patent/RU2571783C2/en not_active IP Right Cessation
- 2011-09-20 CN CN2011800460438A patent/CN103339339A/en active Pending
- 2011-09-20 WO PCT/EP2011/066323 patent/WO2012038428A1/en active Application Filing
-
2013
- 2013-03-20 ZA ZA2013/02143A patent/ZA201302143B/en unknown
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2015
- 2015-10-07 AU AU2015238819A patent/AU2015238819A1/en not_active Abandoned
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| US4073354A (en) * | 1976-11-26 | 1978-02-14 | Christensen, Inc. | Earth-boring drill bits |
| US4751972A (en) * | 1986-03-13 | 1988-06-21 | Smith International, Inc. | Revolving cutters for rock bits |
| US6105693A (en) * | 1999-02-18 | 2000-08-22 | Sandvik Ab | Partially enhanced percussive drill bit |
| CN2413013Y (en) * | 2000-03-01 | 2001-01-03 | 蔡友梅 | Split down-the-hole drill bit |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20130180785A1 (en) | 2013-07-18 |
| KR20140005880A (en) | 2014-01-15 |
| AU2011304461B2 (en) | 2015-09-03 |
| KR20140009149A (en) | 2014-01-22 |
| AU2011304382A1 (en) | 2013-04-11 |
| ZA201302143B (en) | 2014-09-25 |
| RU2013118269A (en) | 2014-10-27 |
| BR112013006621A2 (en) | 2016-06-21 |
| CA2812600A1 (en) | 2012-03-29 |
| EP2434086B1 (en) | 2013-05-15 |
| WO2012038428A1 (en) | 2012-03-29 |
| WO2012038342A1 (en) | 2012-03-29 |
| AU2011304461A1 (en) | 2013-04-11 |
| RU2571783C2 (en) | 2015-12-20 |
| AU2011304382B2 (en) | 2015-01-15 |
| CA2811674A1 (en) | 2012-03-29 |
| AU2015238819A1 (en) | 2015-10-29 |
| BR112013006623A2 (en) | 2016-06-28 |
| EP2619396A1 (en) | 2013-07-31 |
| RU2013118265A (en) | 2014-10-27 |
| CN103339339A (en) | 2013-10-02 |
| US20130180784A1 (en) | 2013-07-18 |
| EP2434086A1 (en) | 2012-03-28 |
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Effective date of abandoning: 20161116 |
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