CN110952929A - Pipe following drilling system with hole wall tamping function - Google Patents
Pipe following drilling system with hole wall tamping function Download PDFInfo
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- CN110952929A CN110952929A CN201911357489.7A CN201911357489A CN110952929A CN 110952929 A CN110952929 A CN 110952929A CN 201911357489 A CN201911357489 A CN 201911357489A CN 110952929 A CN110952929 A CN 110952929A
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 239000002689 soil Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
- E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a pipe following drilling system with a hole wall tamping function, wherein a connecting cylinder is coaxially connected onto a sleeve, the upper end and the lower end of the connecting cylinder are both connected with the sleeve, the connecting cylinder is positioned close to the joint of a drill rod and an impactor, the connecting cylinder comprises an upper cylinder part, a lower cylinder part and a rotating part rotatably connected between the upper cylinder part and the lower cylinder part, and the outer wall of the rotating part is provided with a plurality of spherical protrusions along the circumferential direction; the protruding radial slidable ground of sphere installs on the rotating part, is equipped with in the rotating part and orders about the protruding outside gliding elastic component of sphere, is equipped with the protruding limit structure who breaks away from the rotating part of restriction sphere between rotating part and the sphere arch, is equipped with linkage structure between rotating part and the drilling rod, and linkage structure sets up in the rotation groove of rotating part inner wall including articulating in the connecting rod of drilling rod outer wall and along circumference, and the connecting rod contradicts with the circumference end wall that rotates the groove and forms the linkage cooperation. The invention has the function of tamping the soil on the hole wall in the drilling process of the casing pipe, so that the hole collapse is not easy to occur in the casing pipe removing process.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering drilling, in particular to a pipe-following drilling system with a hole wall tamping function.
Background
The down-the-hole impact pipe-following drilling technology is an efficient drilling method aiming at drilling holes in complex strata such as broken, lost and collapsed strata. The down-the-hole hammer is used for efficiently crushing rock, and the synchronous follow-in sleeve is used for protecting the hole wall, so that the three processes of drilling, wall protection and slag discharge are simultaneously carried out.
The prior art, granted publication No. CN 200940443Y, discloses a down-the-hole pipe following drilling system, which comprises a pilot, an impactor and a pipe shoe connected with the pilot, and a casing connected with the pipe shoe, wherein the front end of the pilot is provided with an eccentric shaft connected with an eccentric reamer bit and a central pilot bit. The upper surface of the guide device is matched with the impactor, the lower surface of the guide device is matched with the pipe shoe, the pipe shoe is in threaded connection with the sleeve, and the pipe shoe is connected with the guide device through a boss.
The above prior art solutions have the following drawbacks: the casing pipe drilling technology adopts the casing pipe to protect the wall, so that the casing pipe can be used for drilling in complex geological conditions, the casing pipe is used as a permanent member of a building in some building engineering construction, most of the casing pipe needs to be recycled, and the casing pipe is pulled out to be possible to collapse in the process of drilling in loose geological conditions although the casing pipe drilling technology ensures smooth drilling.
Disclosure of Invention
The invention aims to provide a pipe following drilling system with a hole wall tamping function, which has the function of tamping hole wall soil in the pipe following drilling process, so that hole collapse is not easy to occur in the casing pipe removing process.
The above object of the present invention is achieved by the following technical solutions:
a pipe following drilling system with a hole wall tamping function comprises a guider, an impactor and a pipe shoe which are connected with the guider, a drill rod connected with the impactor, a sleeve connected with the pipe shoe, a drill bit group connected with the front end of the guider, a connecting cylinder coaxially connected with the sleeve, wherein the upper end and the lower end of the connecting cylinder are both connected with the sleeve, the connecting cylinder is positioned close to the connection position of the drill rod and the impactor, the connecting cylinder comprises an upper cylinder part, a lower cylinder part and a rotating part rotatably connected between the upper cylinder part and the lower cylinder part, and a plurality of spherical protrusions are arranged on the outer wall of the rotating part along the circumferential direction of the rotating part; but the bellied sphere of sphere outwards radially slidable installs on the rotating part, be equipped with in the rotating part and order about the bellied outside gliding elastic component of sphere, be equipped with the protruding limit structure who breaks away from the rotating part of restriction sphere between rotating part and the sphere arch, be equipped with linkage structure between rotating part and the drilling rod, linkage structure sets up in the rotation groove of rotating part inner wall including articulating in the connecting rod of drilling rod outer wall and along circumference, the connecting rod contradicts with the circumference end wall that rotates the groove and forms the linkage cooperation.
Through adopting above-mentioned technical scheme, be connected with the connecting cylinder on the sleeve pipe, and including the rotating part with the drilling rod linkage on the connecting cylinder, when the drilling rod rotates and the sleeve pipe is followed up, the connecting cylinder can be followed up the sleeve pipe and follow up to slide in the hole, because the drilling rod can drive the rotating part rotation when rotating, therefore the rotating part can drive the protruding circumferential direction of sphere. Under the effect of elastic component, the spherical protrusion is protruding connecting cylinder outer wall, therefore the spherical protrusion can carry out the extrusion tamping to the pore wall along with the rotating part rotation in-process. Because the spherical protrusion is installed on the rotating part in a radially slidable manner, when the spherical protrusion is extruded by hard substances on the hole wall, the spherical protrusion can slide in the rotating part in a radial direction, so that the spherical protrusion can rotate smoothly. Due to the design of the spherical surface protrusions and the spherical surface at the outer side, the surrounding soil can be gradually and relatively softly extruded in the rotating process, so that the hole wall is not easy to collapse. The linkage structure adopts the mode that the connecting rod hinged to the drill rod is matched with the rotating groove, so that the normal lifting rod of the drill rod can be realized, after drilling is finished, the drill bit is lifted out of the sleeve, and the connecting rod can rotate towards the side where the drill bit group is located, so that the connecting rod leaves the rotating groove. When inserting the drilling rod, rotate the connecting rod to keeping away from drill bit group one side earlier for in the connecting rod gets into the sleeve, when inserting drilling rod to assigned position downwards, the connecting rod rotates to rotating the inslot along with the dead weight, and when the drilling rod rotated, the connecting rod rotated to rotating groove circumference end wall department along with the drilling rod, and it is rotatory to promote the rotating part when the drilling rod continues to rotate. By adopting the technical scheme, the hole wall can be tamped, so that the hole collapse is not easy to occur in the sleeve pulling-out process.
The invention is further configured to: the upper end of the rotating part is connected with a first bearing ring and is rotationally connected with the upper barrel part through the first bearing ring, the inner ring of the first bearing ring is fixedly connected with the rotating part, and the outer ring of the first bearing ring is fixedly connected with the upper barrel part; the rotating part lower extreme is connected with the second bearing circle and through second bearing circle and lower barrel part swivelling joint, the inner circle and the rotating part fixed connection of second bearing circle, the outer lane and the lower barrel part fixed connection of second bearing circle.
Through adopting above-mentioned technical scheme, adopt first bearing ring to connect rotating part and last barrel portion for rotating part and last barrel portion form swivelling joint, adopt second bearing ring to connect rotating part and lower barrel portion, make rotating part and lower barrel portion form swivelling joint.
The invention is further configured to: the inner ring and the outer ring of the first bearing ring and the second bearing ring are respectively provided with a connecting part extending axially, the extending directions of the connecting parts on the inner ring and the outer ring are opposite, the first bearing ring and the second bearing ring are respectively connected with the rotating part through the connecting part on the inner ring, the first bearing ring is connected with the upper barrel part through the connecting part on the outer ring, and the second bearing ring is connected with the lower barrel part through the connecting part on the outer ring.
By adopting the technical scheme, the connecting parts extending axially are arranged on the inner ring and the outer ring of the first bearing ring and the second bearing ring, so that the connecting area can be increased, and the connecting strength is increased.
The invention is further configured to: the connecting portion have the through-hole along circumference distribution, be used for being equipped with the screw hole on the wall of being connected with connecting portion on last section of thick bamboo portion, lower section of thick bamboo portion and the rotating part, connecting portion wear to establish through-hole and screw hole threaded connection through the bolt.
Through adopting above-mentioned technical scheme, wear to establish the through-hole and the screw hole of connecting portion through the bolt and be connected, be convenient for fixed and can dismantle.
The invention is further configured to: the edge of the through hole is provided with a counter bore, and the bolt is a countersunk head bolt.
Through adopting above-mentioned technical scheme for the bolt head can not the bulge connecting portion.
The invention is further configured to: the rotating part is equipped with the spout of radial setting, the protruding sliding connection of sphere is in the spout, limit structure is including setting up the spacing step in the spout and setting up in the protruding spacing fender edge that is located the spout of sphere one end, spacing fender edge is spacing with spacing step formation conflict.
Through adopting above-mentioned technical scheme, the spherical surface is protruding can slide in the spout to realize flexible, when spacing fender along sliding to contradicting in spacing step, both form the conflict relation, make the spherical surface protruding unable complete break away from out the spout.
The invention is further configured to: the inner of spout is connected with the shrouding, the elastic component is the spring, the spring both ends are contradicted respectively in shrouding and the bellied inboard of sphere.
Through adopting above-mentioned technical scheme, the spring both ends are contradicted respectively in shrouding and the bellied inboard of sphere for the spring can exert pressure to the sphere arch, thereby makes the sphere arch produce radial outside gliding trend.
The invention is further configured to: and a positioning groove for embedding the spring is arranged on the inner side of the spherical bulge.
Through adopting above-mentioned technical scheme, can fix the position of spring through the constant head tank for the difficult skew of spring.
The invention is further configured to: and a torsional spring for driving the connecting rod to be kept in a state of being vertical to the drill rod is arranged at the hinged position of the connecting rod and the drill rod.
By adopting the technical scheme, the torsion spring can provide force for the connecting rod to keep the state of being vertical to the drill rod, when the drill rod enters the connecting cylinder and the connecting rod reaches the position of the rotating groove, the connecting rod can be opened under the action of the torsion spring so as to enter the rotating groove,
in conclusion, the beneficial technical effects of the invention are as follows: the sleeve pipe is with following up the in-process, makes drilling rod and rotating part linkage through linkage structure to make the rotating part drive the protruding rotation of sphere, the sphere is protruding to carry out the extrusion tamp to hole wall soil at the pivoted in-process, thereby pull out the difficult hole of stepping on that produces of sheathed tube in-process in the later stage.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a partial schematic view of the present embodiment;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is a schematic view of the connecting rod in the rod-withdrawing state of the drill rod of the present embodiment;
FIG. 5 is a schematic view of the connecting rod in the rod advancing state of the drill rod of the present embodiment;
fig. 6 is a schematic view showing the installation of the torsion spring according to the present embodiment.
Description of reference numerals: 1. a pilot; 2. an impactor; 3. a pipe boot; 4. a drill stem; 5. a drill bit group; 6. a sleeve; 7. an eccentric drill bit; 8. a center drill; 9. a connecting cylinder; 10. an upper cylinder part; 11. a rotating part; 12. a lower cylinder part; 13. a torsion spring; 14. a countersunk bolt; 15. a first bearing ring; 16. a second bearing ring; 17. a connecting portion; 18. a through hole; 19. a threaded hole; 20. a bolt; 21. spherical surface is convex; 22. a chute; 23. a limiting step; 24. a limiting blocking edge; 25. closing the plate; 26. a spring; 27. positioning a groove; 28. a connecting rod; 29. a rotating groove; 30. a hinged seat; 31. and (7) a pin shaft.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example (b): a pipe following drilling system with a hole wall tamping function is disclosed, as shown in figure 1, and comprises a guide device 1, an impactor 2 and a pipe shoe 3 which are connected with the guide device 1, a drill rod 4 connected with the impactor 2, and a sleeve 6 connected with the pipe shoe 3, wherein the front end of the guide device 1 is connected with a drill bit group 5, the drill bit group 5 comprises an eccentric drill bit 7 and a central drill bit 8, and the above structures are the same as those of the prior art, so that the description is omitted.
As shown in figure 1, a section of connecting cylinder 9 is coaxially connected to the casing 6, the upper end and the lower end of the connecting cylinder 9 are both connected with the casing 6, and the connecting cylinder 9 is located close to the connection position of the drill rod 4 and the impactor 2. The connecting cylinder 9 comprises an upper cylinder part 10, a lower cylinder part 12 and a rotating part 11 which is rotatably connected between the upper cylinder part 10 and the lower cylinder part 12, the lower cylinder part 12 is inserted into the lower sleeve 6 and is fixed by a plurality of countersunk head bolts 14 arranged at the circumferential direction of the inserted part, and the upper cylinder part 10 is inserted into the upper sleeve 6 and is fixed by a plurality of countersunk head bolts 14 arranged at the circumferential direction of the inserted part.
As shown in fig. 2 and 3, the upper end of the rotating portion 11 is connected to a first bearing ring 15 and is rotatably connected to the upper cylinder portion 10 via the first bearing ring 15, the inner ring of the first bearing ring 15 is fixedly connected to the rotating portion 11, and the outer ring of the first bearing ring 15 is fixedly connected to the upper cylinder portion 10. The lower end of the rotating portion 11 is connected with a second bearing ring 16 and is rotatably connected with the lower barrel portion 12 through the second bearing ring 16, the inner ring of the second bearing ring 16 is fixedly connected with the rotating portion 11, and the outer ring of the second bearing ring 16 is fixedly connected with the lower barrel portion 12. The inner ring and the outer ring of the first bearing ring 15 and the second bearing ring 16 are respectively provided with a connecting part 17 which extends axially, the extending directions of the connecting parts 17 on the inner ring and the outer ring are opposite, the first bearing ring 15 and the second bearing ring 16 are respectively connected with the rotating part 11 through the connecting part 17 on the inner ring, the first bearing ring 15 is connected with the upper barrel part 10 through the connecting part 17 on the outer ring, and the second bearing ring 16 is connected with the lower barrel part 12 through the connecting part 17 on the outer ring. Through holes 18 are distributed on the connecting portion 17 along the circumferential direction, threaded holes 19 are formed in the walls, which are used for being connected with the connecting portion 17, of the upper cylinder portion 10, the lower cylinder portion 12 and the rotating portion 11, and the connecting portion 17 is connected with the threaded holes 19 in a threaded mode through the through holes 18 in a penetrating mode through bolts 20. The edge of the through hole 18 is provided with a counter bore, and the bolt 20 is a counter bore bolt.
As shown in fig. 2 and 3, the outer wall of the rotating portion 11 is provided with a plurality of spherical protrusions 21 along the circumferential direction thereof, and in the present embodiment, the spherical protrusions 21 are preferably two and symmetrically arranged. The rotating part 11 is provided with a sliding groove 22 which is radially arranged, the spherical surface of the spherical protrusion 21 is outwards slidably connected to the sliding groove 22, a limiting step 23 is arranged in the sliding groove 22, one end of the spherical protrusion 21, which is located in the sliding groove 22, is provided with a limiting blocking edge 24, and the limiting blocking edge 24 and the limiting step 23 form a collision limiting function. The inner end of the sliding groove 22 penetrates through the rotating part 11, the spherical bulge 21 can be placed into the sliding groove 22 from the inner end of the sliding groove 22, the sealing plate 25 is welded at the inner end of the sliding groove 22, the spring 26 is connected between the spherical bulge 21 and the sealing plate 25 in an abutting mode, and the positioning groove 27 for the spring 26 to be embedded is formed in the inner side of the spherical bulge 21. Under the action of the spring 26, the spherical protrusion 21 keeps the tendency of sliding towards the side away from the sealing plate 25, and the spherical protrusion 21 can be prevented from completely separating from the sliding slot 22 by the interference effect of the limit stop edge 24 and the limit step 23.
As shown in fig. 2 and 3, a linkage structure is arranged between the rotary part 11 and the drill rod 4, the linkage structure comprises a connecting rod 28 hinged to the outer wall of the drill rod 4 and a rotary groove 29 arranged on the inner wall of the rotary part 11 along the circumferential direction, and the connecting rod 28 is abutted against the circumferential end wall of the rotary groove 29 to form linkage fit. Wherein the outer wall of the drill rod 4 is provided with a hinge seat 30, and the connecting rod 28 is rotatably fixed on the hinge seat 30 through a pin 31. The preferred connecting rod 28 has a plate shape at both ends and a round rod shape in the middle. The two ends of the connecting rod 28 are plate-shaped, so that the connecting rod can be conveniently connected with the hinge seat 30, the contact surface of the other end of the connecting rod with the end wall of the rotating groove 29 is enlarged, the rotating part 11 can be conveniently pushed to rotate, and the middle part of the connecting rod is round rod-shaped, so that the influence on chip removal can be reduced. The rotary groove 29 may be formed partially on the inner wall of the rotary portion 11 and partially on the closing plate 25, and may be formed in communication with the inner wall of the rotary portion 11.
The working principle of the embodiment is as follows: when the drill rod 4 rotates and the sleeve 6 follows, the connecting cylinder 9 can follow the sleeve 6 to slide in the hole, and the drill rod 4 rotates to drive the rotating part 11 to rotate, so that the rotating part 11 can drive the spherical protrusions 21 to rotate circumferentially. The spherical projection 21 protrudes from the outer wall of the connecting cylinder 9 under the action of the spring 26, so that the spherical projection 21 presses and tamps the hole wall during the rotation of the rotating part 11. Since the spherical protrusion 21 is installed on the rotating portion 11 in a radially slidable manner, when the spherical protrusion 21 is squeezed by a hard material on the hole wall, the spherical protrusion 21 can slide radially into the rotating portion 11, thereby keeping the rotating portion 11 rotating smoothly. The spherical surface bulge 21 and the design of the outer spherical surface can gradually and relatively softly extrude surrounding soil in the rotating process, so that the hole wall is not easy to collapse. The linkage structure adopts a mode that a connecting rod 28 hinged on the drill rod 4 is matched with a rotating groove 29, so that the normal lifting of the drill rod 4 can be realized, and after the drilling is finished, in the process of lifting the drill bit out of the casing 6, as shown in fig. 4, the connecting rod 28 can rotate towards the side of the impactor 2, so that the connecting rod can leave the rotating groove 29. As shown in fig. 5, when inserting the drill rod 4, the connecting rod 28 is first rotated to the side away from the impactor 2, so that the connecting rod 28 enters the casing 6, and when inserting the drill rod 4 downwards until the guide 1 abuts on the boss of the pipe shoe 3, the connecting rod 28 just slides to the rotating groove 29 (the distance is designed), the connecting rod 28 rotates to the rotating groove 29 along with the self-weight, and when the drill rod 4 rotates, the connecting rod 28 rotates to the circumferential end wall of the rotating groove 29 along with the drill rod 4, and pushes the rotating part 11 to rotate when the drill rod 4 continues to rotate.
Preferably, as shown in fig. 6, a torsion spring 13 for keeping the connecting rod 28 perpendicular to the drill rod 4 can be installed at the hinge joint of the connecting rod 28 and the drill rod 4. The two torsion springs 13 are respectively located on two sides of the connecting rod 28, the torsion springs 13 are sleeved on the pin shaft 31, one fixed end of each torsion spring 13 is inserted into a hole reserved in the hinge seat 30, and the other fixed end of each torsion spring 13 is inserted into a hole reserved in the connecting rod 28. The two torsion springs 13 are installed in opposite directions, that is, the two torsion springs 13 provide opposite directions for the restoring force provided by the connecting rod 28, and when the connecting rod 28 rotates upwards, one torsion spring 13 provides a main restoring elastic force; the other torsion spring 13 provides the primary return spring force when the connecting rod 28 is rotated downward. The connecting rod 28 is held in a state perpendicular to the drill rod 4 by the installation of the two torsion springs 13. At the same time, the rotation slot 29 has a certain space in the axial direction of the drill rod 4, so that the connecting rod 28 can reliably enter the rotation slot 29 under the action of the torsion spring 13 when the drill rod 4 is inserted into the casing 6 to the mounting position.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a follow pipe drilling system with pore wall tamp function, is including leading positive ware (1), impacter (2) and pipe shoe (3) of being connected with leading positive ware (1), drilling rod (4) of being connected with impacter (2), sleeve pipe (6) of being connected with pipe shoe (3), leads positive ware (1) front end and is connected with drill bit group (5), its characterized in that: the drill rod hammer is characterized in that a connecting cylinder (9) is coaxially connected onto the sleeve (6), the upper end and the lower end of the connecting cylinder (9) are both connected with the sleeve (6), the connecting cylinder (9) is positioned close to the joint of the drill rod (4) and the impactor (2), the connecting cylinder (9) comprises an upper cylinder part (10), a lower cylinder part (12) and a rotating part (11) which is rotatably connected between the upper cylinder part (10) and the lower cylinder part (12), and a plurality of spherical protrusions (21) are arranged on the outer wall of the rotating part (11) along the circumferential direction of the rotating part; but the sphere of sphere arch (21) is installed on rotating part (11) radially to the outside slidable, be equipped with in rotating part (11) and order about the protruding (21) gliding elastic component of sphere, be equipped with the limit structure that restriction sphere arch (21) break away from rotating part (11) between rotating part (11) and sphere arch (21), be equipped with linkage structure between rotating part (11) and drilling rod (4), linkage structure sets up in rotation groove (29) of rotating part (11) inner wall including connecting rod (28) that articulate in drilling rod (4) outer wall and along circumference, the conflict of circumference end wall of connecting rod (28) and rotation groove (29) forms the linkage cooperation.
2. The pipe-following drilling system with hole wall tamping function according to claim 1, wherein: the upper end of the rotating part (11) is connected with a first bearing ring (15) and is rotationally connected with the upper cylinder part (10) through the first bearing ring (15), the inner ring of the first bearing ring (15) is fixedly connected with the rotating part (11), and the outer ring of the first bearing ring (15) is fixedly connected with the upper cylinder part (10); the lower end of the rotating part (11) is connected with a second bearing ring (16) and is rotationally connected with the lower cylinder part (12) through the second bearing ring (16), the inner ring of the second bearing ring (16) is fixedly connected with the rotating part (11), and the outer ring of the second bearing ring (16) is fixedly connected with the lower cylinder part (12).
3. The pipe-following drilling system with hole wall tamping function according to claim 2, wherein: the inner ring and the outer ring of the first bearing ring (15) and the second bearing ring (16) are respectively provided with a connecting part (17) extending axially, the extending directions of the connecting parts (17) on the inner ring and the outer ring are opposite, the first bearing ring (15) and the second bearing ring (16) are respectively connected with the rotating part (11) through the connecting part (17) on the inner ring, the first bearing ring (15) is connected with the upper barrel part (10) through the connecting part (17) on the outer ring, and the second bearing ring (16) is connected with the lower barrel part (12) through the connecting part (17) on the outer ring.
4. The pipe-following drilling system with hole wall tamping function according to claim 3, wherein: connecting portion (17) distribute along circumference has through-hole (18), be used for being equipped with screw hole (19) on the wall of being connected with connecting portion (17) on last section of thick bamboo portion (10), lower section of thick bamboo portion (12) and rotating part (11), connecting portion (17) wear to establish through-hole (18) and screw hole (19) threaded connection through bolt (20).
5. The pipe-following drilling system with hole wall tamping function according to claim 4, wherein: the edge of the through hole (18) is provided with a counter bore, and the bolt (20) is a countersunk head bolt.
6. The system for drilling with casing according to any one of claims 1 to 5, wherein: rotating part (11) are equipped with radial spout (22) that sets up, protruding (21) sliding connection in spout (22) of sphere, limit structure is including setting up spacing step (23) in spout (22) and setting up in the protruding (21) spacing fender edge (24) that are located spout (22) one end of sphere, spacing fender edge (24) and spacing step (23) formation are contradicted spacingly.
7. The pipe-following drilling system with hole wall tamping function according to claim 6, wherein: the inner of spout (22) is connected with shrouding (25), the elastic component is spring (26), spring (26) both ends are contradicted in shrouding (25) and spherical bulge (21) inboard respectively.
8. The pipe-following drilling system with hole wall tamping function according to claim 7, wherein: and a positioning groove (27) for embedding the spring (26) is formed in the inner side of the spherical protrusion (21).
9. The pipe-following drilling system with hole wall tamping function according to claim 1, wherein: and a torsion spring (13) for driving the connecting rod (28) to be kept in a state of being vertical to the drill rod (4) is arranged at the hinged position of the connecting rod (28) and the drill rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911357489.7A CN110952929B (en) | 2019-12-25 | 2019-12-25 | Pipe following drilling system with hole wall tamping function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357489.7A CN110952929B (en) | 2019-12-25 | 2019-12-25 | Pipe following drilling system with hole wall tamping function |
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| CN110952929A true CN110952929A (en) | 2020-04-03 |
| CN110952929B CN110952929B (en) | 2021-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911076A (en) * | 2020-08-31 | 2020-11-10 | 中国科学院空间应用工程与技术中心 | Deep lunar soil rotary steering drilling mechanism |
| CN113153138A (en) * | 2021-05-06 | 2021-07-23 | 河南云平环保科技有限公司 | Drilling and tamping integrated long spiral drilling machine and drilling and tamping method |
| CN114412349A (en) * | 2022-03-09 | 2022-04-29 | 中国水利水电建设工程咨询贵阳有限公司 | Pore wall reinforced structure in deep long pile construction hole of major diameter |
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| CN114412349A (en) * | 2022-03-09 | 2022-04-29 | 中国水利水电建设工程咨询贵阳有限公司 | Pore wall reinforced structure in deep long pile construction hole of major diameter |
| CN114412349B (en) * | 2022-03-09 | 2024-07-09 | 中国水利水电建设工程咨询贵阳有限公司 | Hole wall reinforcing structure of large-diameter deep and long pile construction hole |
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