CN113137190A - Rotary drilling rig drill rod component and rotary drilling rig - Google Patents
Rotary drilling rig drill rod component and rotary drilling rig Download PDFInfo
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- CN113137190A CN113137190A CN202110521447.3A CN202110521447A CN113137190A CN 113137190 A CN113137190 A CN 113137190A CN 202110521447 A CN202110521447 A CN 202110521447A CN 113137190 A CN113137190 A CN 113137190A
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- 238000005553 drilling Methods 0.000 title claims abstract description 79
- 230000036346 tooth eruption Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 15
- 239000002689 soil Substances 0.000 description 10
- 239000011435 rock Substances 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
Abstract
The invention discloses a rotary drilling rig drill rod component and a rotary drilling rig, wherein the rotary drilling rig drill rod component comprises: a drill stem, a power assembly and a sleeve; a drill bit is arranged at one end of the drill rod, and the other end of the drill rod is connected with the power assembly; the sleeve is of a hollow structure with openings at two ends, and the drill rod is sleeved in a cavity of the sleeve; one end of the sleeve is connected with the power assembly, and the end face of the other end of the sleeve is provided with a plurality of cutting teeth; when the drill rod component works, the power component drives the drill rod and the sleeve to synchronously rotate to complete drilling, and through structural design, the drilling direction of the rotary drilling machine in the drilling process can be effectively maintained, and the perpendicularity of drilling is guaranteed.
Description
Technical Field
The invention relates to the technical field of construction machinery, in particular to a rotary drilling rig drill rod assembly and a rotary drilling rig.
Background
The rotary excavating machine is piling equipment for hole forming operation, and is widely applied by the advantages of high efficiency, rapidness, environmental protection, high hole forming quality and the like along with the rapid development of domestic basic engineering in recent years. The rotary drilling machine mainly utilizes the power head to drive the drill rod, and the driving force and the pressurizing force of the power head are transmitted to the drill bit through the drill rod to cut and drill the stratum.
In the use of machine of digging soon, the drill bit meets hard stone in the underground and can cause great impact force for the direction of underground drill bit takes place the skew, and the hole of shooing is not perpendicular downwards, leads to the ground not firm enough easily, makes the straightness that hangs down in follow-up building construction process, and stability is relatively poor.
Disclosure of Invention
Aiming at the problem that the drilling direction is deviated due to the fact that the rotary drilling machine in the prior art is prone to sliding when meeting a hard rock layer in the drilling process, the invention aims to provide the rotary drilling machine drill rod component and the rotary drilling machine.
In a first aspect:
the invention discloses a drill rod component of a rotary drilling rig, which comprises: a drill stem, a power assembly and a sleeve; a drill bit is arranged at one end of the drill rod, and the other end of the drill rod is connected with the power assembly; the sleeve is of a hollow structure with openings at two ends, and the drill rod is sleeved in a cavity of the sleeve; one end of the sleeve is connected with the power assembly, and the end face of the other end of the sleeve is provided with a plurality of cutting teeth; when the drill rod component works, the power component drives the drill rod and the sleeve to synchronously rotate, and drilling is completed.
In the scheme, the drill rod assembly of the rotary drilling machine comprises a sleeve and a drill rod which are synchronously driven by a power assembly, when the drill rod assembly performs drilling operation, the sleeve and the drill rod synchronously move to the position below the ground surface to realize drilling, when hard rocks are encountered, the soil around the sleeve supports the sleeve by 180 degrees in the range of a corresponding plane, the stress is uniform, the sleeve is ensured not to cause larger impact force due to encountering underground hard rocks to cause the direction to shift, and the direction of the drill rod is further ensured. Thereby ensuring the perpendicularity of the drilled hole.
Further, the end face of the drill bit for matching with the ground does not exceed the end face of the sleeve cavity.
Further, the power assembly comprises a driving motor and a transmission gear set; the transmission gear set is of a planet gear structure and comprises a sun gear, a planet gear and a gear ring; the sun gear is connected with a power output shaft of the driving motor; the sun gear is connected with the drill rod, so that the power assembly drives the drill rod; the planet gear is meshed with the sun gear and is fixed through a planet carrier; the gear ring is meshed with the planet gear, and the gear ring is connected with the sleeve, so that the power assembly drives the sleeve.
Further, the drill rod further comprises a connecting assembly, the connecting assembly is used for connecting the sun gear and the drill bit, and the connecting assembly comprises a first connecting piece, a connecting sleeve and a second connecting piece; the first connecting piece comprises a first connecting rod and a plurality of first limiting pieces, wherein one end of the first connecting rod is connected with the sun wheel, and the first limiting pieces are arranged at the other end of the first connecting rod connected with the sun wheel; the second connecting piece comprises a second connecting rod and a plurality of second limiting pieces, wherein one end of the second connecting rod is connected with the drill bit, and the second limiting pieces are arranged at the other end of the second connecting rod connected with the drill bit; the connecting sleeve is provided with a cavity structure with two open ends, and the cavity of the connecting sleeve comprises a plurality of third limiting parts which can be matched with the first limiting parts and the second limiting parts; through holes for the first connecting rod and the second connecting rod to pass through are further formed in the two ends of the connecting sleeve respectively, the first connecting rod and the second connecting rod can slide along the through holes, and therefore the relative position of the first limiting part and the second limiting part in the cavity of the connecting sleeve can be changed.
Furthermore, the connecting sleeve is further provided with a plurality of elastic pieces, the elastic pieces are arranged in the cavity of the connecting sleeve, and the elastic pieces are arranged between two end faces of the first limiting piece and the second limiting piece, which are close to each other.
Furthermore, one end of the elastic member is connected with the first limiting member, and the other end of the elastic member is connected with the second limiting member; the resilient member is in a non-compressed state when the drill stem assembly is not supported by the ground surface.
Further, when the elastic element is in a compressed state, the end face of the drill bit, which is used for being matched with the ground, does not exceed the end face of the cavity of the sleeve.
Furthermore, the device also comprises a crushing drill bit, wherein the crushing drill bit is connected with the planetary wheel through a third connecting rod, and the planetary wheel rotates to realize the rotation of the crushing drill bit so as to realize the crushing of excavated soil.
Further, the sleeve includes a plurality of L type groove, and is a plurality of L type groove circumference is seted up the sleeve with the one end that the ring gear is connected, the ring gear include a plurality of be used for with L type groove mutually supported's cardboard.
Second aspect of the invention
The invention also discloses a rotary drilling machine which comprises the drill rod assembly.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the rotary drilling machine and the drill rod assembly thereof, the drilling direction of the rotary drilling machine in the drilling process can be effectively maintained through the structural design, and the verticality of a drill hole is ensured
2. According to the rotary drilling machine and the drill rod assembly thereof, the planet wheel structure is adopted to drive the sleeve and the drill bit simultaneously, the rotation directions of the sleeve and the drill bit are opposite while the verticality of a drilled hole is ensured, and the situation that the sleeve and the drill bit are locked to block the rotation of the sleeve and the drill bit is avoided;
3. according to the rotary drilling machine and the drill rod assembly thereof, the drill is stretched through the structural design of the connecting assembly and the elastic piece, and the verticality of a drilled hole is further ensured;
4. according to the rotary digging machine and the drill rod assembly thereof, the soil is conveniently discharged through the structural design of the crushing drill bit and the L-shaped groove.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of a drill rod assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a power assembly in an embodiment of the present invention;
FIG. 3 is a schematic view of a connecting assembly according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along A-A of FIG. 3 in an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along A-A of FIG. 3 in another embodiment of the present invention;
FIG. 6 is a schematic diagram of a structure with a breaker bit according to an embodiment of the present invention;
FIG. 7 is a schematic view of a sleeve structure according to an embodiment of the present invention;
fig. 8 is a schematic structural view of the rotary drilling machine of the present invention.
Reference numbers and corresponding part names in the drawings:
1-drill rod, 11-drill bit, 12-connecting assembly, 12 a-first connecting piece, 12 b-connecting sleeve, 12 c-second connecting piece, 2-power assembly, 21-driving motor, 22-transmission gear set, 22 a-sun gear, 22 b-planet gear, 22 c-gear ring, 3-sleeve, 31-cutting tooth, 32-L-shaped groove and 4-crushing drill bit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Examples
As shown in fig. 1, an embodiment of the present invention discloses a rotary drilling rig drill rod assembly, including: the drilling rod 1, the power assembly 2 and the sleeve 3; a drill bit 11 is arranged at one end of the drill rod 1, and the other end of the drill rod 1 is connected with the power assembly 2; the sleeve 3 is a hollow structure with openings at two ends, and the drill rod 1 is sleeved in a cavity of the sleeve 3; one end of the sleeve 3 is connected with the power assembly 2, and the end surface of the other end is provided with a plurality of cutting teeth 31; when the drill rod component works, the power component 2 drives the drill rod 1 and the sleeve 3 to synchronously rotate, and drilling is completed.
The sleeve 3 is of a hollow structure, the drill rod 1 is sleeved in an inner cavity of the sleeve 3, a drill bit 11 is arranged at the other end of the drill rod 1, it should be noted that the diameter of the drill bit 11 is not larger than that of the sleeve 3, and the drill bit 11 and the sleeve 3 are in clearance fit to avoid mutual interference; further, the diameter of the drill bit 11 is slightly smaller than the diameter of the sleeve 3, so that on one hand, the influence on the guiding effect of the sleeve 3 caused by a gap passageway between the sleeve 3 and the drill bit 11 is avoided, and on the other hand, a certain gap is arranged, so that the blockage between the sleeve 3 and the drill bit 11 is avoided in the drilling process.
The end face of the sleeve 3, which is matched with the ground, is provided with a plurality of cutting teeth 31, and through the mutual matching of the cutting teeth 31 and the ground, when the power assembly 2 drives the sleeve 3 to rotate, the cutting teeth 31 and the ground act to cut the ground by the sleeve 3, so that the punching efficiency is ensured; specifically, the cutting teeth 31 include, but are not limited to, carbide tools, diamond tools; and those skilled in the art will appreciate that the cutting teeth 31 may be angled at different angles to the ground to ensure that the cutting teeth 31 cut the ground.
In this embodiment, the drill rod assembly of the rotary drilling machine comprises a sleeve 3 and a drill rod 1 which are synchronously driven by a power assembly 2, when the drill rod assembly performs drilling work, the sleeve 3 and the drill rod 1 synchronously move towards the ground surface to realize drilling, when hard rocks are encountered, the soil around the sleeve 3 supports the sleeve 3 within the range of a corresponding plane by 180 degrees, the stress is uniform, the sleeve 3 is ensured not to generate large impact force due to encountering underground hard rocks, so that the direction is deviated, and the direction of the drill rod 1 is further ensured. So that the direction is deviated, thereby ensuring the verticality of the drilled hole.
In some embodiments, the end face of the drill bit 11 intended to engage the ground does not extend beyond the end face of the cavity of the sleeve 3.
Specifically, the drill bit 11 is always located in the cavity of the sleeve 3, when the drill rod assembly drills, the sleeve 3 is in advance or simultaneously in contact with the ground of the next floor relative to the drill bit 11, and by means of corresponding position relation design, the sleeve 3 can be effectively guaranteed, in the drilling process, the sleeve 3 always keeps limiting the drill bit 11, underground soil supports the sleeve 3, the relative position of the drill bit 11 is guaranteed, and drilling verticality is prevented from changing due to relative sliding.
As shown in fig. 2, in some embodiments, the power assembly 2 includes a driving motor 21, a transmission gear set 22; the transmission gear set 22 is of a planetary gear structure and comprises a sun gear 22a, a planetary gear 22b and a gear ring 22 c; the sun gear 22a is connected with a power output shaft of the driving motor 21; the sun gear 22a is connected with the drill rod 1, so that the power assembly 2 drives the drill rod 1; the planet wheel 22b is meshed with the sun wheel 22a, and the planet wheel 22b is fixed through a planet carrier; the gear ring 22c is engaged with the planet gear 22b, and the gear ring 22c is connected with the sleeve 3, so that the power assembly 2 drives the sleeve 3.
It should be noted that, as a person skilled in the art should know, in the structure of the planet wheel 22b, the rotation speed and the rotation direction can be changed by selecting different driving members, fixing members and driven members; specifically, the sun gear 22a is connected with a power output shaft of the driving motor 21 and the drill rod 1, that is, the sun gear 22a serves as a driving part, and when the drill rod 1 is driven to rotate, power input of the planetary gear 22b assembly is realized; the plurality of planet wheels 22b are fixed through a planet carrier, that is, the planet wheels 22b can only rotate along the axis thereof and cannot revolve along the rotation center of the sun wheel 22 a; the gear ring 22c is a driven member, the sleeve 3 is connected with the gear ring 22c, and the rotation of the drill rod 1 and the rotation of the gear ring 22c are simultaneously realized through the power output shaft.
In the embodiment, with the planetary gear 22b structure, the sun gear 22a is used as a driving part, and the ring gear 22c is used as a driven part, when the drill rod assembly is used for drilling, the power output shaft of the driving motor 21 drives the sun gear 22a to rotate, so that the drill bit 11 is rotated; the sun gear 22a drives the gear ring 22c to rotate, so that the sleeve 3 rotates; based on this, by the sun gear 22a assembly, the rotation of the sleeve 3 and the drill bit 11 is simultaneously achieved. Selecting a planet wheel 22b structure fixed by a planet wheel 22b, wherein the planet wheel 22b structure is a speed reduction combination and has opposite rotation directions; a speed reduction combination is selected, namely the rotating speed of the gear ring 22c is lower than that of the sun gear 22a, when the drill rod assembly drills, due to the fact that the rotating speed of the gear ring 22c is lower, the main drilling progress is determined by the descending speed of the sleeve 3 in the drilling process, and therefore through the speed limitation, when hard rock layers are met, due to the fact that the cutting speed of the sleeve 3 to rock-soil layers is low, the descending speed of the drill bit 11 is limited, the situation that the drill bit 11 deviates due to the fact that the speed in the descending process is too high and the impact force is too large is avoided, and the perpendicularity of drilling is further guaranteed; and, the rotating directions of the sleeve 3 and the drill bit 11 are opposite, so that the influence on the drilling efficiency caused by the rotation clamping of the sleeve 3 and the drill bit 11 in the drilling process can be effectively avoided.
As shown in fig. 3-5, in some embodiments, the drill rod 1 further comprises a connecting assembly 12, the connecting assembly 12 is used for connecting the sun gear 22a and the drill bit 11, and the connecting assembly 12 comprises a first connector 12a, a connecting sleeve 12b and a second connector 12 c; the first connecting piece 12a includes a first connecting rod having one end connected to the sun gear 22a and a plurality of first limiting pieces, and the first limiting pieces are disposed at the other end of the first connecting rod connected to the sun gear 22 a; the second connecting piece 12c includes a second connecting rod connected with one end of the drill bit 11 and a plurality of second limiting pieces, and the second limiting pieces are arranged at the other end of the second connecting rod connected with the drill bit 11; the connecting sleeve 12b has a cavity structure with two open ends, and the cavity of the connecting sleeve 12b includes a plurality of third limiting members capable of being matched with the first limiting members and the second limiting members; through holes for the first connecting rod and the second connecting rod to pass through are further formed in the two ends of the connecting sleeve 12b respectively, the first connecting rod and the second connecting rod can slide along the through holes, and therefore the relative position of the first limiting part and the second limiting part in the cavity of the connecting sleeve 12b can be changed.
Specifically, one end of the first connecting rod is used for connecting with the sun gear 22a, and the other end is provided with a plurality of first limiting members; one end of the second connecting rod is used for being connected with the drill bit 11, and the other end of the second connecting rod is provided with a plurality of second limiting pieces; a third limiting piece which can be matched with the first limiting piece and the second limiting piece is arranged in the connecting sleeve 12 b; when the driving motor 21 drives the sun gear 22a to rotate, the sun gear 22a drives the first limiting member to rotate through a first connecting rod, and the rotation of the first limiting member and the rotation of the third limiting member cooperate with each other to drive the connecting sleeve 12b to rotate; the connecting sleeve 12b rotates, and the third limiting member and the second limiting member are mutually matched to drive the second limiting member to rotate, so that the sun gear 22a drives the drill bit 11.
The first limiting member and the limiting member are disposed at a certain price, and in the connecting sleeve 12b, the first limiting member and the second limiting member may be close to or far from each other, so as to achieve the lifting of the drill bit 11.
It should be noted that, the diameter of the through-hole at the two ends of the connecting sleeve 12b should respectively with the diameter looks adaptation of the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod can be followed the pole through realize for the axial slip of the connecting sleeve 12b, thereby realize that the first locating part with the second locating part can be close to each other or keep away from, specifically, the first connecting rod with the second connecting rod should respectively with through-hole clearance fit, just the lateral wall of through-hole directly contradicts with the lateral wall of connecting rod, has guaranteed the connecting rod with the cooperation intensity of through-hole, has further guaranteed the straightness that hangs down of drilling rod 1 avoids connecting component 12 position takes place to incline to influence the straightness that hangs down of drilling.
Furthermore, the connecting sleeve 12b is further provided with a plurality of elastic pieces, the elastic pieces are arranged in the cavity of the connecting sleeve 12b, the elastic pieces are arranged between two end faces of the first limiting piece and the second limiting piece, the elastic pieces are arranged between the end faces of the first limiting piece and the second limiting piece, the relative positions of the first limiting piece and the second limiting piece are guaranteed, and the elastic pieces are arranged between the end faces of the first limiting piece and the second limiting piece, so that the first limiting piece and the second limiting piece are in elastic contact through the spring pieces, the impact force is prevented from directly acting on the contact surfaces of the first limiting piece and the second limiting piece, and the service life of the connecting assembly 12 is prolonged.
Specifically, will the elastic component set up in power component 2 with the link that drill bit 11 is connected, through structural design, the effectual rotation of having avoided drilling rod 1 is right the elastic component causes the influence, and through the position design of elastic component, has reduced the influence of the gravity that the elastic component received, has improved the life of elastic component.
Furthermore, one end of the elastic member is connected with the first limiting member, and the other end of the elastic member is connected with the second limiting member; the resilient member is in a non-compressed state when the drill stem assembly is not supported by the ground surface.
Wherein, the elastic component is in the non-compression state, promptly the elastic component is for not taking place elastic deformation perhaps the elastic component is tensile state, and is concrete, works as when the elastic component is tensile state in the drilling rod subassembly working process, the elastic component compresses gradually, and when accomplishing the drilling work that corresponds the horizontal plane, the elastic component has the power of resumeing elastic deformation to guarantee the cooperation intensity with next drilling horizontal plane, and set up to the non-compression state, the elastic component has the pulling force of resumeing elastic deformation, reduces first locating part with the second locating part is respectively right connecting sleeve 12b end pressure of mutually supporting improves connecting sleeve 12 b's life.
Further, when the elastic element is in a compressed state, the end face of the drill bit 11, which is used for being matched with the ground, does not exceed the end face of the cavity of the sleeve 3, and through the length design of the drill rod 1, the drill bit 11 is ensured to lag behind the sleeve 3 all the time in the drilling process of the drill rod assembly, and the guiding effect of the sleeve 3 on the drill bit 11 is ensured.
In this embodiment, because the first limiting member and the second limiting member are matched at an interval, the first limiting member and the second limiting member can slide in the connecting sleeve 12b, so as to realize the extension and retraction of the drill bit 11, when the drill rod assembly is used for drilling, through a gap between the first limiting member and the second limiting member, the impact force between the drill bit 11 and a hard rock layer can be better removed, the drill bit 11 is prevented from deviating, and the verticality of the drill hole is ensured; in the use process of the drill rod 1, the sleeve 3 is connected with the gear ring 22c, the drill rod 1 is connected with the sun gear 22a, the rotating speed of the drill rod 1 is greater than that of the sleeve 3, and when drilling is carried out, the elastic force of the elastic piece, the gravity of the drill bit 11 and the constant pressure applied in the drilling process are balanced with the supporting force of the ground surface to the drill bit 11; after the drill bit 11 completes the drilling operation, the supporting force of the ground to the drill bit 11 disappears, the stress balance state is damaged, the drill bit 11 moves downwards under the action of the corresponding downward force and forms stress balance with the next horizontal plane again, at this time, because the rotating speed of the sleeve 3 is slow, the drilling operation of the previous horizontal plane is not completed, the sleeve 3 forms a guiding effect on the drill bit 11, the drill bit 11 is further ensured not to deviate, and in the downward process of the drill bit 11, the elastic part in the connecting component 12 recovers the elastic deformation of the component, the downward elastic component is reduced, even the direction is changed, so that the impact force between the drill bit 11 and the next drilling horizontal plane is further reduced, and the verticality of the drilling is ensured; and through the position design of the elastic part, the drill bit 11 and the sleeve 3 mutually form a guiding function, and the verticality of the drilled hole is further improved.
As shown in fig. 6, in some embodiments, the drill rod assembly further comprises a crushing drill bit 4, the crushing drill bit 4 is connected with the planet wheel 22b through a third connecting rod, and the planet wheel 22b rotates to rotate the crushing drill bit 4 so as to crush excavated soil.
It should be noted that, as will be appreciated by those skilled in the art, the length of the crushing bit 4 should not affect the rotation of the bit 11.
In this embodiment, through the design of broken drill bit 4 after drill bit 11 drills soil, the soil that the correspondence was bored and is got reachs behind the up end of drill bit 11, get into drilling rod 1 with clearance between the sleeve 3, broken drill bit 4 can realize smashing of corresponding soil, at follow-up dumping in-process, makes things convenient for the dumping.
In some embodiments, as shown in fig. 7, the sleeve 3 comprises a plurality of L-shaped grooves 32, a plurality of L-shaped grooves 32 are circumferentially opened at one end of the sleeve 3 connected with the gear ring 22c, and the gear ring 22c comprises a plurality of clamping plates for mutually matching with the L-shaped grooves 32.
The L-shaped groove 32 is to ensure that the clamping plate can be matched with the L-shaped groove 32 when the sleeve 3 rotates in one direction, so that the sleeve 3 and the clamping plate are fixed to each other, and the clamping plate drives the sleeve 3 to rotate; when the sleeve 3 rotates to a certain position along the other direction, the clamping plate can unlock the sleeve 3 and the clamping plate through the L-shaped groove 32, so that the sleeve 3 and the clamping plate are not matched with each other, and the sleeve 3 is taken down.
Second aspect of the invention
As shown in fig. 8, the embodiment of the invention also discloses a rotary drilling machine, which comprises the drill rod assembly.
In this embodiment, the rotary drilling machine can effectively keep the drilling direction of the rotary drilling machine in the drilling process based on the drill rod assembly, and the perpendicularity of the drill hole is guaranteed.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a rotary drilling rig drilling rod subassembly which characterized in that includes:
the drill rod (1), the power assembly (2) and the sleeve (3);
a drill bit (11) is arranged at one end of the drill rod (1), and the other end of the drill rod is connected with the power assembly (2);
the sleeve (3) is of a hollow structure with openings at two ends, and the drill rod (1) is sleeved in a cavity of the sleeve (3);
one end of the sleeve (3) is connected with the power assembly (2), and the end surface of the other end of the sleeve is provided with a plurality of cutting teeth (31);
when the drill rod component works, the power component (2) drives the drill rod (1) and the sleeve (3) to synchronously rotate, and drilling is completed.
2. The rotary drilling rig drill rod assembly according to claim 1, characterized in that the end face of the drill bit (11) for engaging with the ground does not extend beyond the end face of the cavity of the sleeve (3).
3. The rotary drilling rig drill rod assembly according to claim 1, characterized in that the power assembly (2) comprises a driving motor (21), a transmission gear set (22); the transmission gear set (22) is of a planetary gear structure and comprises a sun gear (22a), a planetary gear (22b) and a gear ring (22 c); the sun gear (22a) is connected with a power output shaft of the driving motor (21); the sun gear (22a) is connected with the drill rod (1) to drive the drill rod (1) by the power assembly (2); the planet wheel (22b) is meshed with the sun wheel (22a), and the planet wheel (22b) is fixed through a planet carrier; the gear ring (22c) is meshed with the planet gear (22b), and the gear ring (22c) is connected with the sleeve (3) to drive the sleeve (3) by the power assembly (2).
4. A rotary drilling rig mast assembly according to claim 3, characterized in that the mast (1) further comprises a connection assembly (12), the connection assembly (12) being for connecting the sun gear (22a) and the drill bit (11), the connection assembly (12) comprising a first connection (12a), a connection sleeve (12b) and a second connection (12 c); the first connecting piece (12a) comprises a first connecting rod and a plurality of first limiting pieces, wherein one end of the first connecting rod is connected with the sun gear (22a), and the first limiting pieces are arranged at the other end of the first connecting rod connected with the sun gear (22 a); the second connecting piece (12c) comprises a second connecting rod and a plurality of second limiting pieces, wherein one end of the second connecting rod is connected with the drill bit (11), and the second limiting pieces are arranged at the other end of the second connecting rod connected with the drill bit (11); the connecting sleeve (12b) is provided with a cavity structure with two open ends, and the cavity of the connecting sleeve (12b) comprises a plurality of third limiting parts which can be matched with the first limiting parts and the second limiting parts; the two ends of the connecting sleeve (12b) are also respectively provided with a through hole through which the first connecting rod and the second connecting rod can pass, and the first connecting rod and the second connecting rod can slide along the through holes, so that the change of the relative positions of the first limiting part and the second limiting part in the cavity of the connecting sleeve (12b) is realized.
5. The rotary drilling rig drill rod assembly according to claim 4, characterized in that the connecting sleeve (12b) is further provided with a plurality of elastic members, the elastic members are arranged in the cavity of the connecting sleeve (12b), and the elastic members are arranged between two end faces of the first limiting member and the second limiting member which are close to each other.
6. The rotary drilling rig drill rod assembly according to claim 5, wherein one end of the elastic member is connected with the first limiting member, and the other end of the elastic member is connected with the second limiting member; the resilient member is in a non-compressed state when the drill stem assembly is not supported by the ground surface.
7. A rotary drilling rig mast assembly according to claim 6, characterized in that the end surface of the drill bit (11) intended to engage the ground does not extend beyond the end surface of the cavity of the sleeve (3) when the resilient member is in the compressed state.
8. A rotary drilling rig mast assembly according to claim 3, characterized in that it further comprises a breaking bit (4), said breaking bit (4) being connected to said planet (22b) by a third link, said planet (22b) rotating to effect rotation of said breaking bit (4) to effect breaking of the excavated earth.
9. The rotary drilling rig drill rod assembly according to claim 3, characterized in that the sleeve (3) comprises a plurality of L-shaped grooves (32), the plurality of L-shaped grooves (32) are circumferentially arranged at one end of the sleeve (3) connected with the gear ring (22c), and the gear ring (22c) comprises a plurality of clamping plates for being matched with the L-shaped grooves (32).
10. A rotary excavating machine comprising the drill stem assembly defined in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110521447.3A CN113137190A (en) | 2021-05-13 | 2021-05-13 | Rotary drilling rig drill rod component and rotary drilling rig |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110521447.3A CN113137190A (en) | 2021-05-13 | 2021-05-13 | Rotary drilling rig drill rod component and rotary drilling rig |
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| CN113137190A true CN113137190A (en) | 2021-07-20 |
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| CN202110521447.3A Pending CN113137190A (en) | 2021-05-13 | 2021-05-13 | Rotary drilling rig drill rod component and rotary drilling rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117404015A (en) * | 2023-10-23 | 2024-01-16 | 中铁十八局集团第三工程有限公司 | Rotary excavating primary and secondary drill bit, method and rotary excavating device |
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