CN219887981U - Hollow construction drill bit suitable for hard rock stratum - Google Patents
Hollow construction drill bit suitable for hard rock stratum Download PDFInfo
- Publication number
- CN219887981U CN219887981U CN202321344863.1U CN202321344863U CN219887981U CN 219887981 U CN219887981 U CN 219887981U CN 202321344863 U CN202321344863 U CN 202321344863U CN 219887981 U CN219887981 U CN 219887981U
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- cone
- cylinder
- drilling
- drill
- hard rock
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- 239000011435 rock Substances 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 60
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005755 formation reaction Methods 0.000 claims description 4
- 230000010006 flight Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 28
- 235000017491 Bambusa tulda Nutrition 0.000 description 28
- 241001330002 Bambuseae Species 0.000 description 28
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 28
- 239000011425 bamboo Substances 0.000 description 28
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to the field of geological drilling construction, and particularly relates to a hollow construction drill bit suitable for hard rock stratum. According to the utility model, the inner drill cylinder and the outer drill cylinder alternately drill, so that the restriction of complex stratum environment on the drilling of the drill bit is effectively avoided, and meanwhile, the inner gear is matched with the outer gear, so that the drilling difficulty is reduced and the drilling efficiency is improved.
Description
Technical Field
The utility model belongs to the field of geological drilling construction, and particularly relates to a hollow construction drill bit suitable for a hard rock stratum.
Background
When the hole forming operation is carried out on the hard rock stratum, cone drilling operation is mostly adopted for construction. The roller bit is the most widely used drilling bit, and cutting teeth alternately contact the bottom of a well when the roller bit works, so that the rock breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and the stratum is easy to be penetrated; the working edge has a large total length and thus relatively reduced wear. Roller cone drill bits are capable of accommodating a wide variety of formations ranging from soft to hard.
However, when the cone drill is used for hole forming operation on hard rock stratum, on one hand, the underground drilling environment is complex, the drilling speed of the drill barrel is low when the underground environment which is difficult to drill is met, and meanwhile, when the drill bit is severely worn, the drill bit is even required to be taken out and replaced, so that the efficiency of the whole hole forming operation is affected.
Disclosure of Invention
The utility model provides a hollow construction drill bit suitable for hard rock stratum, which is used for solving the problems that when the existing construction drill bit drills into hard rock stratum, the drilling speed is lower when the existing construction drill bit encounters an underground environment difficult to drill, and even the drill bit needs to be taken out and replaced when the drill bit is seriously worn, so that the efficiency of the whole pore-forming operation is affected.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a cavity formula construction drill bit suitable for hard rock stratum, is including interior bore a section of thick bamboo and cover and establish the outer section of thick bamboo that bores outside boring a section of thick bamboo in, interior upper end face that bores a section of thick bamboo is higher than outer section of thick bamboo up end, and lower terminal surface is less than outer section of thick bamboo down end face that bores, interior section of thick bamboo top sets up the end cover, end cover top sets up connecting portion, annular piece, motor, connecting portion are located annular piece, it has the through-hole to run through on the annular piece, the motor sets up in connecting portion one side and with end cover top surface fixed connection, the fixed slot is seted up to outer section of thick bamboo inboard that bores, connecting plate one end passes the through-hole and stretches into the fixed slot and the other end middle part runs through there is the bar hole, bar hole upside sets up the rack, the output of motor is fixed to be provided with the gear with rack meshing, be provided with helical protrusion on the interior section of thick bamboo lateral surface, outer section of thick bamboo medial surface sets up in the helical groove that helical protrusion corresponds, interior section of thick bamboo circumference sets up a plurality of cone, interior cone tilt, outer cone down end circumference sets up a plurality of outer cone tilt, outer cone angle sets up outside the cone angle, outer cone angle through the same orientation, and the cone angle of cone is difficult to bore the outside the well when the well bore the outside, and the well angle is crossed when the cone angle is advanced, and the well angle is well, and the well has the efficiency is reduced.
Preferably, the inner side of the bottom of the outer drill cylinder is provided with an inward inclined annular inclined plane, so that the outer gear and the outer drill cylinder can conveniently drill downwards, and the drilling difficulty is reduced.
Preferably, the length of the spiral bulge is smaller than or equal to that of the spiral groove, and the spiral bulge is matched with the spiral groove to realize independent drilling and resetting of the inner drill barrel.
Preferably, the inner cone and the outer cone comprise a cone seat and a cone body, the inner cone and the outer cone are respectively and fixedly connected with the corresponding cone seat below the inner cone and the outer cone, the cone body is rotationally connected with the cone seat, the cone body corresponding to the inner cone is obliquely arranged inwards, the cone body corresponding to the outer cone is obliquely arranged outwards, and the drilling capability is effectively improved under synchronous running of the revolution of the outer cone and the inner cone and the rotation of the cone body.
Preferably, the outer wall of the outer drill cylinder is provided with a spiral sheet, so that on one hand, drilling difficulty is reduced through the spiral sheet, and on the other hand, slag removal and cleaning are performed on rock and the like after crushing of the outer cone.
Through the technical scheme, the utility model has the beneficial effects that:
according to the utility model, the inner drill cylinder and the outer drill cylinder are sleeved, during drilling operation, firstly, the stratum is ground and crushed to form an annular hole through revolution of the outer drill cylinder and autorotation of the outer gear, then, during drilling, the stratum at the inner side of the annular hole is ground and crushed further under the revolution of the inner drill cylinder and the autorotation of the inner gear, at the moment, the drilling pressure and abrasion of the inner gear are obviously reduced, when the situation that drilling is difficult is met, the motor is started, the gear rotates to drive the rack to move, the connecting plate is moved out of the fixed groove, the inner drill cylinder does not drive the outer drill cylinder to rotate, the inner gear is driven to rotate and drill downwards through the cooperation of the spiral bulge and the spiral groove, the position difficult to drill is avoided, then, the inner drill cylinder is reset to drive the outer drill cylinder to rotate together, at the moment, the drilling pressure and the drilling difficulty of the outer gear are obviously reduced, the drilling efficiency is effectively improved, the drilling difficulty of complex stratum is reduced, and meanwhile, when the outer gear is worn, the problem that the drill bit can only be taken out and replaced is effectively avoided, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present utility model.
Fig. 2 is a schematic structural diagram of the second embodiment of the present utility model.
Fig. 3 is a schematic structural view of the inner drill barrel of the present utility model.
Fig. 4 is a schematic structural view of the outer drill barrel of the present utility model.
Fig. 5 is an enlarged view of the utility model at a in fig. 2.
Fig. 6 is an enlarged view of the present utility model at B in fig. 3.
The reference numerals in the drawings are: the inner drill cylinder 1, the outer drill cylinder 2, the spiral sheet 3, the connecting part 4, the annular block 5, the motor 6, the spiral bulge 7, the spiral groove 8, the inner roller 9, the outer roller 10, the roller seat 11, the roller body 12, the connecting plate 13, the through hole 14, the fixing groove 15, the strip-shaped hole 16, the rack 17 and the gear 18.
Detailed Description
The utility model is further described with reference to the drawings and detailed description which follow:
as shown in fig. 1 to 6, the present embodiment provides a hollow construction drill bit suitable for hard rock stratum, comprising an inner drill cylinder 1 and an outer drill cylinder 2 sleeved outside the inner drill cylinder 1, wherein the upper end surface of the inner drill cylinder 1 is lower than the upper end surface of the outer drill cylinder 2, and the lower end surface is higher than the lower end surface of the outer drill cylinder 2, so that the outer drill cylinder 2 is firstly in contact with the hard rock stratum for drilling, then the inner drill cylinder 1 is in contact with the stratum inside the outer drill cylinder 2 for drilling, the drilling efficiency and the drilling effect are ensured, an end cover is arranged above the inner drill cylinder 1, a connecting part 4, an annular block 5, a motor 6 and a connecting plate 13 are arranged above the end cover, the connecting part 4 is positioned in the annular block 5, the connecting part 4 is used for being connected with a drill rod, the drill rod is connected with a power head, the power head drives the rotation of the rotating rod, and further drives the inner drill cylinder 1 to rotate, the drilling operation is accomplished in turn, the through-hole 14 has been run through on the annular piece 5, motor 6 sets up in connecting portion 4 one side and with end cover top surface fixed connection, fixed slot 15 is seted up to outer brill section of thick bamboo 2 inboard, connecting plate 13 one end passes through-hole 14 and stretches into fixed slot 15 and the other end middle part runs through there is bar hole 16, bar hole 16 upside sets up rack 17, the fixed gear 18 that is provided with rack 17 meshing of output of motor 6, when interior brill section of thick bamboo 1 rotates, drives annular piece 5 through the end cover and rotates in step, and then drives connecting plate 13 and rotate, and connecting plate 13 drives outer brill section of thick bamboo 2 and rotate, when interior brill section of thick bamboo 1 alone is bored to needs, through motor 6 drive gear 18 rotation, and then rack 17 and connecting plate 13 remove, connecting plate 13 break away from fixed slot 15, can realize interior brill section of thick bamboo 1's individual rotation.
The utility model provides a drilling machine, including bore section of thick bamboo 1, be provided with spiral protruding 7 on the lateral surface, bore section of thick bamboo 2 medial surface outside and set up in spiral groove 8 that spiral protruding 7 corresponds, spiral protruding 7's length is less than or equal to spiral groove 8's length, when meetting complicated stratum, bore section of thick bamboo 2 outside and be difficult to bore or bore the difficulty, connecting plate 13 leaves fixed slot 15, bore section of thick bamboo 1 alone down creep into under bore section of thick bamboo 1 outside spiral protruding 7 and spiral groove 8 cooperation, and then avoid bore section of thick bamboo 2's the position of boring, bore section of thick bamboo 1 outside spiral protruding 7 and spiral groove 8 cooperation down in interior, bore section of thick bamboo 1 reverse rotation reset in the follow, connecting plate 13 aligns and stretches out through motor 6 drive with fixed slot 15 at this moment, bore section of thick bamboo 1 and bore section of thick bamboo 2 synchronous rotation bore in this moment because bore section of thick bamboo 1 has to bore the stratum and bore the work, bore the degree of difficulty greatly reduced in outer section of thick bamboo 2, and then guarantee the smooth and efficiency of whole operation of boring.
The inner drill cylinder 1 is provided with a plurality of inner gear wheels 9 in the circumferential direction of the lower end surface, the inner gear wheels 9 incline inwards, the outer drill cylinder 2 is provided with a plurality of outer gear wheels 10 in the circumferential direction of the lower end surface, the outer gear wheels 10 incline outwards, the inner gear wheels 9 and the outer gear wheels 10 are in the same quantity and are arranged in a staggered mode, so that the drilling effect of an annular area of a hard rock stratum is further enhanced, the inner gear wheels 9 and the outer gear wheels 10 comprise a gear seat 11 and a gear wheel body 12, the inner drill cylinder 1 and the outer drill cylinder 2 are respectively and fixedly connected with the gear seat 11 corresponding to the lower part of the inner gear wheel 9, the gear wheel body 12 is connected with the gear seat 11 in a rotating mode, the gear wheel body 12 corresponding to the inner drill cylinder 1 inclines inwards, the gear wheel body 12 corresponding to the outer drill cylinder 2 inclines outwards, and the grinding and crushing effects of the hard rock stratum are guaranteed through revolution of the drill cylinder and the gear wheel body 12, and rock entering efficiency is improved.
The inner side of the bottom of the outer drilling barrel 2 is provided with an inward inclined annular inclined plane (namely, chamfering treatment), so that the rock entering drilling capability of the outer drilling barrel 2 is further enhanced.
The spiral sheets 3 are arranged on the outer wall of the outer drill cylinder 2, so that drilling difficulty is reduced through the spiral sheets 3, and slag removal and cleaning are performed on rocks and the like after the outer cone 10 is broken.
When the drilling rod is used for drilling hard rock stratum, the drill rod drives the inner drilling cylinder 1 to rotate through the connecting part 4, the gear 18 is driven to rotate through the motor 6, and then the rack 17 meshed with the gear 18 drives the connecting plate 13 to slide in the through hole 14, so that the connecting plate 13 is controlled to stretch into or leave the fixed groove 15, when the connecting plate 13 is positioned in the fixed groove 15, the inner drilling cylinder 1 drives the annular block 5 to rotate through the end cover, the annular block 5 drives the outer drilling cylinder 2 to rotate through the connecting plate 13, synchronous rotary drilling and stopping of the inner drilling cylinder 1 and the outer drilling cylinder 2 are realized, and when the connecting plate 13 leaves the fixed groove 15, the inner drilling cylinder 1 can independently rotate for drilling.
During drilling operation, the outer roller 10 of the outer drill cylinder 2 is firstly contacted with hard rock stratum, the hard rock stratum is ground and crushed under the revolution of the outer drill cylinder 2 and the rotation action of the outer roller, a cylindrical stone column is formed in the outer drill cylinder 2, the inner side of the lower section of the outer drill cylinder 2 is chamfered, the outer drill cylinder 2 is convenient to drill, the drilling resistance is reduced, the drilling is continued, the outer side of the cylindrical stone column is contacted with the inner roller 9, the outer side of the cylindrical stone column is ground and crushed under the revolution of the inner drill cylinder 1 and the rotation action of the inner roller 9, and meanwhile, slag removal and cleaning are carried out on the crushed rock and the like of the outer roller 10 through the spiral piece 3 arranged on the outer side of the outer drill cylinder 2 in the drilling process, and the drilling difficulty is reduced.
When the outer gear 10 encounters a stratum position difficult to drill, firstly, the inner drill cylinder 1 is controlled to stop rotating, the connecting plate 13 is retracted and separated from the fixing groove 15, then the inner drill cylinder 1 is controlled to rotate and drill downwards, at the moment, the outer drill cylinder 2 stops drilling, the inner drill cylinder 1 and the inner gear 9 move downwards to pass through the outer gear 10 and avoid the position which is faced by the outer gear 10 and difficult to drill, when the inner drill cylinder 1 drills downwards for a certain distance, the inner drill cylinder 1 reversely rotates and resets until the connecting plate 13 is aligned with the fixing groove 15, and extends into the fixing groove 15 to reset through the driving of the motor 6, at the moment, the inner drill cylinder 1 is controlled to rotate to drive the outer drill cylinder 2 to rotate to continue drilling operation, and as the inner drill cylinder 1 drills into the inner side area of the outer drill cylinder 2, the pressure of the ground broken stratum of the outer gear 10 is greatly relieved, smooth drilling operation is effectively guaranteed, and drilling efficiency of the stratum difficult to drill is improved.
The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present utility model.
Claims (5)
1. The hollow construction drill bit suitable for the hard rock stratum is characterized by comprising an inner drilling cylinder (1) and an outer drilling cylinder (2) sleeved outside the inner drilling cylinder (1), wherein the upper end face of the inner drilling cylinder (1) is lower than the upper end face of the outer drilling cylinder (2) and the lower end face is higher than the lower end face of the outer drilling cylinder (2), an end cover is arranged above the inner drilling cylinder (1), a connecting part (4), an annular block (5), a motor (6) and a connecting plate (13) are arranged above the end cover, the connecting part (4) is positioned in the annular block (5), a through hole (14) is formed in the annular block (5) in a penetrating mode, the motor (6) is arranged on one side of the connecting part (4) and fixedly connected with the top face of the end cover, a fixed groove (15) is formed in the inner side of the outer drilling cylinder (2), one end of the connecting plate (13) penetrates through the through hole (14) to extend into the fixed groove (15) and the middle of the other end of the connecting plate is provided with a strip-shaped hole (16), a rack (17) is arranged on the upper side of the strip-shaped hole (16), and an output end of the motor (6) is fixedly provided with a gear rack (17) which is meshed with the rack (18);
a spiral bulge (7) is arranged on the outer side surface of the inner drill cylinder (1), and a spiral groove (8) corresponding to the spiral bulge (7) is arranged on the inner side surface of the outer drill cylinder (2);
the inner drill cylinder is characterized in that a plurality of inner gear wheels (9) are circumferentially arranged on the lower end face of the inner drill cylinder (1), the inner gear wheels (9) incline inwards, a plurality of outer gear wheels (10) are circumferentially arranged on the lower end face of the outer drill cylinder (2), the outer gear wheels (10) incline outwards, and the inner gear wheels (9) and the outer gear wheels (10) are identical in number and are arranged in a staggered mode.
2. A hollow construction drill bit for hard rock formations according to claim 1, characterized in that the inner side of the bottom of the outer drill cylinder (2) is provided as an inwardly sloping annular bevel.
3. A hollow construction drill bit suitable for use in hard rock formations according to claim 1, characterised in that the length of the helical protuberance (7) is less than or equal to the length of the helical flute (8).
4. The hollow construction drill bit for hard rock stratum according to claim 1, wherein the inner cone (9) and the outer cone (10) comprise a cone seat (11) and a cone body (12), the inner cone (1) and the outer cone (2) are fixedly connected with the corresponding cone seat (11) below the inner cone and the outer cone respectively, the cone body (12) is rotatably connected with the cone seat (11), the cone body (12) corresponding to the inner cone (1) is inclined inwards, and the cone body (12) corresponding to the outer cone (2) is inclined outwards.
5. Hollow construction drill bit suitable for hard rock formations according to claim 1, characterized in that the outer wall of the outer drill cylinder (2) is provided with screw flights (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321344863.1U CN219887981U (en) | 2023-05-30 | 2023-05-30 | Hollow construction drill bit suitable for hard rock stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321344863.1U CN219887981U (en) | 2023-05-30 | 2023-05-30 | Hollow construction drill bit suitable for hard rock stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219887981U true CN219887981U (en) | 2023-10-24 |
Family
ID=88401832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321344863.1U Active CN219887981U (en) | 2023-05-30 | 2023-05-30 | Hollow construction drill bit suitable for hard rock stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219887981U (en) |
-
2023
- 2023-05-30 CN CN202321344863.1U patent/CN219887981U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |