CN112796312A - Spiral drilling pouring pile forming structure for CFG pile - Google Patents
Spiral drilling pouring pile forming structure for CFG pile Download PDFInfo
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- CN112796312A CN112796312A CN202011640754.5A CN202011640754A CN112796312A CN 112796312 A CN112796312 A CN 112796312A CN 202011640754 A CN202011640754 A CN 202011640754A CN 112796312 A CN112796312 A CN 112796312A
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- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 14
- 230000010412 perfusion Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
- E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
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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
- 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
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Earth Drilling (AREA)
Abstract
The utility model relates to a spiral drilling pouring pile-forming structure for CFG pile, belonging to the technical field of drilling and pile-pouring equipment, which adopts the main technical proposal that the spiral drilling pouring pile-forming structure comprises a drill rod and a pouring hole arranged in the drill rod, wherein the end part of the drill rod is provided with an opening, and the end part of the drill rod is provided with an end cover component; the end cover assembly comprises a mounting seat hinged to the end part of the drill rod and capable of sealing an opening of the filling hole, and a cover disc rotatably supported on the mounting seat, wherein a pressure balance hole penetrating through the mounting seat is formed in the mounting seat, a matching hole capable of being communicated with the pressure balance hole or staggered with the pressure balance hole along with the rotation of the cover disc is formed in the cover disc, and the matching hole penetrates through the cover disc; and the drill rod is provided with a control mechanism capable of driving the cover disc to rotate. The application of the drill rod can rapidly open the cover when the drill rod is lifted so as to spray concrete.
Description
Technical Field
The application relates to the technical field of drilling and pile-filling equipment, in particular to a spiral drilling and filling pile-forming structure for CFG piles.
Background
The CFG pile is a low-strength concrete pile, can fully utilize the combined action of bearing capacity of soil among the piles, can transmit load to a deep foundation and has better technical performance and economic effect. During construction of the CFG pile, a pile hole is drilled by a drilling machine, and concrete is poured into the hole to form the pile.
At present, the patent document of grant bulletin No. CN210289661U discloses a drilling tool is used in construction of composite foundation CFG stake, its main technical scheme is, including the drilling rod, be equipped with the injected hole along its length direction in the drilling rod, the drilling rod from the bottom up is equipped with in proper order and creeps into the section, the section of dumping, closely knit section, crowd the section soon, it includes the drill bit to creep into the section, the drill bit is including locating the three horn heads of core bar lower extreme in the dumping, a sharp portion of three horn heads is located the extending direction of the axis of drilling rod, three horn head both sides are articulated through the torsional spring has the valve, the valve is to the shutoff of dumping section lopsidedness the injected hole.
Aiming at the related technologies, the drilling tool inevitably drills into the underground water layer when drilling in certain areas, so that when the drilling tool is pulled out upwards and grouting is carried out in the drilled hole through the grouting hole, the underground water and slurry can generate upward thrust on the valve, the valve cannot be opened rapidly, concrete slurry cannot fully fill the bottom of the drilled hole, and the pile forming quality of the CFG pile is affected.
Disclosure of Invention
In order to enable the cover to be rapidly opened to spray out concrete when the drill rod is lifted, the application provides a spiral drilling pouring pile forming structure for CFG piles.
In a first aspect, the present application provides a spiral drilling pouring pile-forming structure for a CFG pile, which adopts the following technical scheme:
a spiral drilling pouring pile forming structure for CFG piles comprises a drill rod and a pouring hole formed in the drill rod, wherein an opening is formed in the end portion of the drill rod of the pouring hole, and an end cover assembly is arranged at the end portion of the drill rod; the end cover assembly comprises a mounting seat hinged to the end part of the drill rod and capable of sealing an opening of the filling hole, and a cover disc rotatably supported on the mounting seat, wherein a pressure balance hole penetrating through the mounting seat is formed in the mounting seat, a matching hole capable of being communicated with the pressure balance hole or staggered with the pressure balance hole along with the rotation of the cover disc is formed in the cover disc, and the matching hole penetrates through the cover disc; and the drill rod is provided with a control mechanism capable of driving the cover disc to rotate.
Through adopting above-mentioned technical scheme, after the drilling rod has bored the hole downwards, at first drive the cap disc through control mechanism and rotate for mating holes and pressure balance hole are in the position of intercommunication each other, and then the pressure inside and outside the filling hole can be balanced, upwards mentions the drilling rod again, and the emergence that so the mount pad can be timely under the effect of gravity rotates, opens the opening of filling hole, and the concrete that makes in the filling hole can be instant spout in order to be used for the stake from the drilling rod.
Optionally, a plurality of conical teeth are fixedly arranged on the cover plate, a containing cavity is formed in the drill rod, the control mechanism comprises a connecting shaft which is rotatably supported in the containing cavity and a bevel gear which is coaxially fixed on the connecting shaft, the bevel gear is meshed with the conical teeth on the cover plate, and the connecting shaft is connected with a power device which can drive the cover plate to rotate.
By adopting the technical scheme, the power device drives the connecting shaft to rotate so as to drive the bevel gear to rotate, and the bevel gear is meshed with the conical teeth on the cover plate, so that the cover plate can be driven to rotate by the bevel gear through the conical teeth, and the aim of driving the cover plate is fulfilled.
Optionally, the control mechanism further comprises a transmission shaft rotatably supported in the accommodating cavity, a first gear is coaxially fixed on the transmission shaft, a second gear is coaxially fixed on the connection shaft, the first gear is meshed with the second gear, and the transmission shaft is connected with a power assembly driving the transmission shaft to rotate.
Through adopting above-mentioned technical scheme, power component drives the transmission shaft and rotates the back, can drive the connecting axle through the meshing relation of first gear and second gear and rotate, and the number of teeth that changes first gear and second gear can play the purpose that changes moment of torsion transmission proportion.
Optionally, the power assembly includes a worm, the worm is connected with a power part for driving the worm to rotate, the power assembly further includes a worm wheel fixed on the transmission shaft, and the worm wheel is meshed with the worm.
Through adopting above-mentioned technical scheme, power spare drives the worm and can make the worm wheel rotate after rotating, because the worm wheel is fixed on the transmission shaft, therefore the worm wheel rotates and can realize driving transmission shaft pivoted purpose.
Optionally, the detachable fixed mounting on the mounting seat has a connecting rod, the drill rod is fixedly provided with a hinged seat, an installation shaft is rotatably supported between the hinged seats, and the connecting rod is fixed on the installation shaft.
Through adopting above-mentioned technical scheme, the installation axle can rotate between two articulated seats, and the mount pad is fixed with the connecting rod, and the connecting rod is fixed with the installation axle again, then can realize articulating the purpose on the drilling rod with the mount pad.
Optionally, a hinge hole is formed in the hinge seat, a connecting bearing is installed in the hinge hole, and the installation shaft penetrates through the connecting bearing and is rotatably supported on the hinge seat through the connecting bearing.
Through adopting above-mentioned technical scheme, the installation axle rotates through connecting the bearing and supports on articulated seat, can change the sliding friction between self and the articulated seat into self and the rolling friction between the connecting the bearing, and rotation resistance is littleer, is favorable to opening more rapidly at suitable opportunity of mount pad.
Optionally, the mounting seat is provided with a connecting groove, the connecting rod is fixedly provided with a connecting plate, the connecting plate is installed in the connecting groove, the side wall of each connecting groove is provided with a through locking hole, the connecting plate is provided with a positioning hole corresponding to the locking hole, the locking hole and the positioning hole are threaded holes, and the locking hole and the positioning hole are connected with a locking bolt in a threaded manner.
Through adopting above-mentioned technical scheme, can pull down connecting rod and connecting plate from the mount pad after changeing locking bolt in from locking hole and the locating hole, otherwise can make connecting rod and connecting plate fix on the mount pad to realized the purpose of the dismantled fixed connection of connecting rod and mount pad, convenient and fast more when changing.
Optionally, a cylindrical mounting groove is formed in the mounting seat, a matching bearing is arranged in the mounting groove, the matching bearing is a roller bearing with an outer ring and an inner ring, the outer ring of the matching bearing is fixed on the side wall of the mounting groove, and the inner ring of the matching bearing is sleeved on the cover disc.
Through adopting above-mentioned technical scheme, the sliding friction of cooperation bearing between with the closing cap and the mounting groove lateral wall changes rolling friction into, and the rolling resistance that can make the closing cap is littleer, is favorable to improving the reliability of device and is life-span.
Optionally, the blade includes flight and piece that breaks ground, and the flight is for fixing long spiral sheet structure on the drilling rod outer wall and along the length direction of drilling rod coiling extension, and the piece that breaks ground is the arc piece and fixes on the drilling rod is close to the outer wall of end cover subassembly.
Through adopting above-mentioned technical scheme, at the drilling rod to the in-process of underground drilling, broken piece and flight can carry out the breakage to underground soil, and the flight can be along with the rotation of drilling rod moves the soil after the breakage to ground top to the realization is at the purpose of underground drilling out the stake hole.
In a second aspect, the present application provides a spiral drilling pouring pile-forming structure for a CFG pile, which adopts the following technical scheme:
a spiral drilling pouring pile forming structure for CFG piles comprises a drill rod and a pouring hole formed in the drill rod, wherein an opening is formed in the end portion of the drill rod of the pouring hole, and an end cover assembly is arranged at the end portion of the drill rod; the end cover assembly comprises a mounting seat hinged to the end of the drill rod and capable of closing the opening of the pouring hole; and the drill rod is provided with a control mechanism capable of pushing the mounting seat to rotate.
Through adopting above-mentioned technical scheme, the drilling rod is driped downwards, treats behind the pore-forming, upwards mentions the drilling rod, uses pushing mechanism to promote the mount pad and rotates, then pushing mechanism's thrust can offset groundwater and mud to the pressure of mount pad, makes the mount pad by force push away to concrete in the perfusion hole can be followed the blowout of lower extreme opening part.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after a hole is drilled downwards by a drill rod, firstly, a cover disc is driven to rotate through a control mechanism, so that a matching hole and a pressure balance hole are in a mutually communicated position, the pressure inside and outside the pouring hole can be balanced, then the drill rod is lifted upwards, and then the mounting seat can timely rotate under the action of gravity, an opening of the pouring hole is opened, and concrete in the pouring hole can be instantly sprayed out of the drill rod to form a pile;
2. the power part drives the worm to rotate and then enables the worm wheel to rotate, the worm wheel is fixed on the transmission shaft, so that the worm wheel can drive the transmission shaft to rotate, the transmission shaft drives the connecting shaft to rotate through the meshing relation of the first gear and the second gear, the connecting shaft can drive the bevel gear to rotate, the conical gear is stirred to drive the cover disc to rotate, and the cover disc is driven to rotate;
3. at the drilling rod to the in-process of underground drilling, broken piece and flight can carry out the breakage to underground soil, and the flight can be along with the rotation of drilling rod with the soil after the breakage move to the ground top to the realization is in the purpose of underground drilling out the stake hole.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1.
Fig. 2 is a schematic diagram of the overall structure of embodiment 1.
Figure 3 is a cross-sectional view of the drill rod of example 1 to illustrate the control mechanism.
Fig. 4 is an exploded schematic view of the connection assembly.
Fig. 5 is a sectional view of the drill rod in example 2.
Description of reference numerals: 1. a drill stem; 11. a perfusion hole; 12. an accommodating chamber; 13. a connecting channel; 2. a blade; 21. a spiral sheet; 22. breaking the soil; 23. teeth; 3. an end cap assembly; 31. a mounting seat; 311. mounting grooves; 312. a pressure balance hole; 313. a support shaft; 314. matching with a bearing; 315. connecting grooves; 3151. a locking hole; 3152. locking the bolt; 316. drilling a tip; 32. a cover plate; 321. mounting holes; 322. a mating hole; 323. a tapered tooth; 33. a connecting assembly; 331. a connecting plate; 3311. positioning holes; 332. a connecting rod; 333. a hinged seat; 3331. a hinge hole; 3332. connecting a bearing; 334. installing a shaft; 4. a control mechanism; 41. a power member; 42. a worm; 43. a drive shaft; 44. a connecting shaft; 45. a worm gear; 46. a first gear; 47. a second gear; 48. a bevel gear; 49. and a hydraulic cylinder.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a spiral drilling pouring pile-forming structure for a CFG pile.
Example 1
Referring to fig. 1 and 2, the spiral drilling perfusion pile-forming structure for the CFG pile comprises a drill rod 1, a blade 2 fixed on the drill rod 1, an end cover assembly 3 installed on the drill rod 1, and a control mechanism 4, wherein the drill rod 1 is a cylindrical long rod, a cylindrical perfusion hole 11 is formed in the drill rod 1, the perfusion hole 11 is coaxially arranged with the drill rod 1, two ends of the perfusion hole penetrate through the drill rod 1, the perfusion hole 11 is used for perfusing concrete, the blade 2 is used for breaking soil and conveying the soil to the ground, the end cover assembly 3 is arranged on one end face of the drill rod 1 and used for sealing an opening of the perfusion hole 11 on the end face of the drill rod 1, and in the downward drilling process of the drill rod 1, the end cover assembly 3 is subjected to an upward reaction force of the soil or underground water and can be always abutted against the end face of the drill rod 1.
Referring to fig. 1 and 2, the end cap assembly 3 includes a mounting seat 31 and a cover plate 32, and further includes a connection assembly 33 for hinging the mounting seat 31 to the end surface of the drill rod 1, the mounting seat 31 is of a flat cylindrical disc structure, a mounting groove 311 is formed on one end surface of the mounting seat 31, the mounting groove 311 is a cylindrical groove and is coaxially disposed with the mounting seat 31, the bottom of the mounting groove 311 is located in the mounting seat 31, an opening of the mounting groove 311 faces the end surface of the drill rod 1, a plurality of pressure balance holes 312 are formed in the bottom surface of the mounting groove 311, the pressure balance holes 312 penetrate through the end surface of the mounting seat 31, the plurality of pressure balance holes 312 are evenly distributed around the center of the bottom surface of the mounting groove 311 at equal intervals, the cover plate 32 is of a circular plate structure and is attached to the bottom surface of the mounting groove 311, the cover plate 32 is provided with a mounting hole 321, the mounting hole 321 is a circular hole, the supporting shaft 313 is coaxially arranged with the mounting seat 31, the supporting shaft 313 is arranged in the mounting hole 321 of the cover plate 32 in a penetrating way, thereby the cover disc 32 is rotatably connected on the supporting shaft 313, a plurality of matching holes 322 are arranged on the cover disc 32, the matching holes 322 are evenly distributed around the axis of the cover disc 32 at equal intervals, the diameter of the matching hole 322 is the same as that of the pressure balance hole 312, the distance between the center of the matching hole 322 and the axis of the supporting shaft 313 is the same as that between the center of the pressure balance hole 312 and the axis of the supporting shaft 313, when the drill rod 1 is drilled into the ground, the fitting hole 322 and the pressure balance hole 312 are maintained in a state of being shifted from each other, the end cap assembly 3 can be maintained in a state of closing the end of the pouring hole 11, and the cover disc 32 is rotated to enable the matching hole 322 to be communicated with the pressure balance hole 312, so that the internal pressure and the external pressure of the pouring hole 11 are more easily balanced, and the cover disc 32 can be quickly opened under the action of gravity after the drill rod 1 moves upwards.
Referring to fig. 2 and 3, a plurality of conical teeth 323 are fixedly arranged on the surface of the cover plate 32 facing the drill rod 1, the plurality of conical teeth 323 are continuously arranged along a circular path around the center of the cover plate 32, a containing cavity 12 for installing the control mechanism 4 is arranged on the drill rod 1 near the end cover assembly 3, the control mechanism 4 comprises a power member 41 fixed in the containing cavity 12, in the embodiment, the power member 41 is an electric motor, the control mechanism 4 further comprises a worm 42 coaxially fixed on an output shaft of the electric motor, a transmission shaft 43 and a connecting shaft 44 rotatably supported in the containing cavity 12, a worm wheel 45 and a first gear 46 coaxially fixed on the transmission shaft 43, and a bevel gear 48 and a second gear 47 coaxially fixed on the connecting shaft 44, wherein the transmission shaft 43 and the connecting shaft 44 are arranged in parallel, the worm 42 and the worm wheel 45 are engaged with each other, the containing cavity 12 is communicated with the end surface of the drill rod 1 near the end cover assembly 3, bevel gear 48 stretches out from accommodating chamber 12 to with conical tooth 323 intermeshing on the apron 32, the starter motor can drive bevel gear 48 and rotate, and then stir apron 32, realize that the mesh that cooperation hole 322 on the adjustment apron 32 is linked together or staggers mutually with pressure balance hole 312, in addition, the number of teeth of first gear 46 is less than the number of teeth of second gear 47, thereby is favorable to reducing the moment of torsion that the motor bore.
Referring to fig. 2 and 3, in order to make the cover plate 32 rotate more smoothly in the mounting groove 311, a fitting bearing 314 is disposed in the mounting groove 311, the fitting bearing 314 is a cylindrical roller bearing, an outer ring of the fitting bearing 314 is fixed on an inner wall of the mounting groove 311, and an inner ring of the fitting bearing 314 is sleeved on the cover plate 32 and fixed with the cover plate 32, so that the cover plate 32 can maintain a rotating connection relationship with the mounting seat 31 through the fitting bearing 314 when rotating, sliding friction between the cover plate 32 and the inner wall of the mounting groove 311 is changed into rolling friction, and the rotation is more smooth.
Referring to fig. 3 and 4, two connection grooves 315 are formed in a side wall of the mounting seat 31, the connection grooves 315 are arc-shaped grooves, the connection assembly 33 includes a connection plate 331 embedded in the arc-shaped grooves, the connection plate 331 is an arc-shaped plate matched with the arc-shaped grooves, the connection assembly 33 further includes a connection rod 332 fixed on the connection plate 331, further includes two hinge seats 333 fixed on an end surface of the drill rod 1, a circular hinge hole 3331 is formed in the hinge seat 333, a connection bearing 3332 is sleeved in the hinge hole 3331, the connection bearing 3332 is a ball bearing, an outer ring of the connection bearing 3332 is inserted in the hinge hole 3331 and fixed to an inner wall of the hinge hole 3331, the connection assembly 33 further includes a mounting shaft 334 disposed between the two hinge seats 333, two ends of the mounting shaft 334 are respectively inserted in inner rings of the two connection bearings 3332 and fixed to inner rings of the connection bearing 3332, an end of the connection rod 332 opposite to the, in addition, a locking hole 3151 is formed in the inner wall of each connecting groove 315, each locking hole 3151 is a threaded hole and penetrates through the end face of the mounting seat 31, a positioning hole 3311 corresponding to the locking hole 3151 is formed in the connecting plate 331, each positioning hole 3311 is a threaded hole of the same specification as the locking hole 3151 and is coaxially arranged with the corresponding locking hole 3151, a locking bolt 3152 penetrates through the locking hole 3151 and the positioning hole 3311, the screw portion of the locking bolt 3152 is in threaded connection with the locking hole 3151 and the positioning hole 3311, and the head of the locking bolt 3152 abuts against the end face of the mounting seat 31, so that the mounting seat 31 is hinged to the end face of the drill rod 1.
Referring to fig. 1, the blade 2 includes a spiral piece 21 and a ground breaking piece 22, the spiral piece 21 is a long spiral sheet-shaped structure fixed on the outer wall of the drill rod 1 and extends along the length direction of the drill rod 1 in a coiled manner, the ground breaking piece 22 is an arc piece and is fixed on the outer wall of the drill rod 1 close to the end cover assembly 3, a plurality of teeth 23 are fixedly arranged at the edge of the ground breaking piece 22 close to the end cover assembly 3, a plurality of teeth 23 are also fixedly arranged at the edge of the spiral piece 21 close to the end cover assembly 3, when the drill rod 1 rotates towards the ground below, the teeth 23 help to break the soil and gradually convey the soil to the ground along with the rotation of the spiral piece 21, and the purpose.
The implementation principle of the embodiment 1 is as follows: the drill rod 1 moves downwards from the ground to drill, when the drill rod 1 rotates, the blades 2 break soil and send the soil to the ground to form holes, in the process, the matching holes 322 in the cover disc 32 and the pressure balance holes 312 in the mounting seat 31 are kept in a mutually staggered state, so that the soil and underground water can apply pressure on the end cover assembly 3, and the mounting seat 31 is tightly attached to the end face of the drill rod 1 to keep the filling holes 11 in a closed state; before the drill rod 1 is lifted upwards after drilling, the bevel gear 48 is driven to rotate by the starting motor so as to drive the cover disc 32 to rotate in the mounting groove 311 relative to the mounting seat 31, the matching hole 322 can be rotated to a state of being communicated with the pressure balance hole 312, the internal pressure and the external pressure of the pouring hole 11 can be balanced, the mounting seat 31 can rotate around the mounting shaft 334 under the action of self gravity, and therefore the pouring hole 11 can be opened in time, and concrete in the pouring hole 11 can be sprayed out.
Example 2
Referring to fig. 5, the present embodiment is different from embodiment 1 in that the end cover assembly 3 only includes a mounting seat 31 and a connecting assembly 33 for hinging the mounting seat 31 on the drill rod 1, and the connecting assembly 33 is the same as the connecting assembly 33 in embodiment 1; the control assembly 4 comprises only a hydraulic cylinder 49 mounted in the housing chamber 12, the cylinder of the hydraulic cylinder 49 being fixed to the inner wall of the housing chamber 12, the piston rod of the hydraulic cylinder 49 projecting from the housing chamber 12 and bearing against the surface of the mounting 31 facing the drill rod 1; in addition, a drill point 316 is fixedly arranged on the downward surface of the mounting seat 31, the drill point 316 is of a conical structure, the tip end of the drill point faces downward, a connecting channel 13 is further formed in the drill rod 1, the connecting channel 13 is of a cavity structure with a cylindrical cross section, one end of the connecting channel 13 is communicated with the accommodating cavity 12, the other end of the connecting channel 13 penetrates out of the drill rod 1 along the length direction of the drill rod 1, and the connecting channel 13 is used for laying a hydraulic pipe of the hydraulic cylinder 49.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A spiral drilling pouring pile-forming structure for CFG piles comprises a drill rod (1) and a pouring hole (11) formed in the drill rod (1), and is characterized in that: the end part of the drill rod (1) of the filling hole (11) is provided with an opening, and the end part of the drill rod (1) is provided with an end cover assembly (3);
the end cover assembly (3) comprises a mounting seat (31) hinged to the end of the drill rod (1) and capable of sealing an opening of the pouring hole (11), and further comprises a cover plate (32) rotatably supported on the mounting seat (31), a pressure balance hole (312) penetrating through the mounting seat (31) is formed in the mounting seat (31), a matching hole (322) capable of being communicated with the pressure balance hole (312) or staggered with the pressure balance hole (312) along with the rotation of the cover plate (32) is formed in the cover plate (32), and the matching hole (322) penetrates through the cover plate (32);
and the drill rod (1) is provided with a control mechanism (4) which can drive the cover disc (32) to rotate.
2. A spiral-drilled cast-in-place pile construction for a CFG pile according to claim 1, wherein: the drill rod drilling mechanism is characterized in that a plurality of conical teeth (323) are fixedly arranged on the cover plate (32), the drill rod (1) is provided with an accommodating cavity (12), the control mechanism (4) comprises a connecting shaft (44) which is rotatably supported in the accommodating cavity (12), and further comprises a bevel gear (48) which is coaxially fixed on the connecting shaft (44), the bevel gear (48) is meshed with the conical teeth (323) on the cover plate (32), and the connecting shaft (44) is connected with a power device which can drive the connecting shaft to rotate.
3. A spiral-drilled cast-in-place pile construction for a CFG pile according to claim 2, wherein: control mechanism (4) still include accommodate transmission shaft (43) that the intracavity (12) internal rotation supported, coaxial fixed with first gear (46) on transmission shaft (43), coaxial fixed with second gear (47) on connecting axle (44), first gear (46) and second gear (47) mesh mutually, and transmission shaft (43) are connected with and drive its pivoted power component.
4. A spiral-drilled cast-in-place pile construction for a CFG pile according to claim 3, wherein: the power assembly comprises a worm (42), the worm (42) is connected with a power part (41) which drives the worm to rotate, the power assembly further comprises a worm wheel (45) which is fixed on the transmission shaft (43), and the worm wheel (45) is meshed with the worm (42).
5. A spiral-drilled cast-in-place pile construction for a CFG pile according to any one of claims 1 to 4, characterised in that: the detachable fixed mounting of the mounting seat (31) is provided with a connecting rod (332), the drill rod (1) is fixedly provided with a hinged seat (333), an installation shaft (334) is rotatably supported between the hinged seat (333), and the connecting rod (332) is fixed on the installation shaft (334).
6. A spiral-drilled cast-in-place pile construction for CFG piles as claimed in claim 5, wherein: articulated seat (333) are last to have seted up articulated hole (3331), install connection bearing (3332) in articulated hole (3331), installation axle (334) pass connection bearing (3332) to rotate to support on articulated seat (333) through connection bearing (3332).
7. A spiral-drilled cast-in-place pile construction for a CFG pile according to claim 6, wherein: the utility model discloses a locking device, including mount pad (31), connecting rod (332), connecting rod (31), connecting plate (3151), locating hole (311), connecting plate (331) are installed in connecting groove (315), and the locking hole (3151) that link up has all been seted up on the lateral wall of every connecting groove (315), has seted up on connecting plate (331) and has locked hole (3151) corresponding locating hole (3311), and locking hole (3151) are the screw hole with locating hole (3311), and locking hole (3151) and locating hole (3311) female connection have locking bolt (3152).
8. A spiral-drilled cast-in-place pile construction for a CFG pile according to any one of claims 1 to 4, characterised in that: the mounting seat (31) is provided with a cylindrical mounting groove (311), a matching bearing (314) is arranged in the mounting groove (311), the matching bearing (314) is a roller bearing with an outer ring and an inner ring, the outer ring of the matching bearing (314) is fixed on the side wall of the mounting groove (311), and the inner ring of the matching bearing (314) is sleeved on the cover disc (32).
9. A spiral-drilled cast-in-place pile construction for CFG piles according to claims 1-4, characterized in that: the blades (2) comprise spiral sheets (21) and ground breaking sheets (22), the spiral sheets (21) are long spiral sheet-shaped structures fixed on the outer wall of the drill rod (1) and extend in a coiling mode along the length direction of the drill rod (1), and the ground breaking sheets (22) are arc-shaped sheets and are fixed on the outer wall, close to the end cover assembly (3), of the drill rod (1).
10. A spiral drilling pouring pile-forming structure for CFG piles comprises a drill rod (1) and a pouring hole (11) formed in the drill rod (1), and is characterized in that: the end part of the drill rod (1) of the filling hole (11) is provided with an opening, and the end part of the drill rod (1) is provided with an end cover assembly (3);
the end cover assembly (3) comprises a mounting seat (31) hinged to the end of the drill rod (1) and capable of closing the opening of the pouring hole (11);
and the drill rod (1) is provided with a control mechanism (4) capable of pushing the mounting seat (31) to rotate.
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| CN112796312B (en) | 2022-04-19 |
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