CN115559667A - Rotary drill for reverse circulation pore-forming grouting pile and construction process - Google Patents
Rotary drill for reverse circulation pore-forming grouting pile and construction process Download PDFInfo
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- CN115559667A CN115559667A CN202211442197.5A CN202211442197A CN115559667A CN 115559667 A CN115559667 A CN 115559667A CN 202211442197 A CN202211442197 A CN 202211442197A CN 115559667 A CN115559667 A CN 115559667A
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- drilling
- disc
- fixedly connected
- rod
- foundation pit
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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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/081—Screw-and-nut feed mechanisms
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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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
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of pile pit construction equipment, in particular to a rotary drill for a reverse circulation pore-forming grouting pile and a construction process, aiming at the problems that in the prior art, cutting teeth are easy to generate gaps or passivation, the drilling efficiency is influenced, a drilling disc needs to provide larger power for the cutting teeth, and the phenomena of hole collapse, necking and the like are easy to generate at the opening of a foundation pit, the following scheme is proposed, and comprises the following steps: the foundation pit is arranged in a foundation pit, a drilling disc for drilling is arranged in the foundation pit, a base is fixedly connected to the top of the foundation pit, a rotating ring and a lifting assembly are rotatably connected to the top of the base, the first gear is driven to rotate by starting a driving motor in the invention, the rotating ring can be driven to rotate, the drilling disc can rotate and move downwards by the rotation of the rotating ring, an extension rod is inserted into soil to keep static, and then in the process of rotating and moving downwards by the drilling disc, the rotating shaft and a cutting tooth rotate while rotating, so that the cutting efficiency of the soil pattern stone block in the foundation pit is improved.
Description
Technical Field
The invention relates to the technical field of pile pit construction equipment, in particular to a rotary drill for a reverse circulation pore-forming grouting pile and a construction process.
Background
Cast-in-situ bored piles are generally formed by mechanically drilling a foundation pit into a foundation, placing a reinforcement cage in the pile hole, and pouring concrete. For example, the invention with the publication number of CN104631439B and the utility model with the publication number of CN217028794U chisels out the foundation pit by reverse circulation drilling hole.
However, the reverse circulation hole drilling process in the prior art still has the following defects:
1. when the drilling disc is used for drilling, the drilling disc drives the cutting teeth to rotate, the cutting teeth are used for crushing the stone in the foundation pit, the power for cutting the stone by the cutting teeth is provided by the drilling disc, and therefore the cutting teeth need to be provided with larger power in the rotating process of the drilling disc, and in addition, when the cutting teeth cut the stone, gaps or passivation easily occur on the cutting teeth, so that the drilling efficiency is influenced;
2. when the foundation pit is dug to a certain depth, a large amount of slurry is poured into the opening of the foundation pit, so that the phenomena of hole collapse, necking and the like easily occur at the opening of the foundation pit, and the pile forming quality can be influenced.
In order to solve the problems, the invention provides a rotary drill for a reverse circulation hole-forming grouting pile and a construction process.
Disclosure of Invention
The invention provides a rotary drill for a reverse circulation hole-forming grouting pile and a construction process, and solves the defects that in the prior art, a cutting tooth is easy to generate gaps or passivation, the drilling efficiency is influenced, a drilling disc needs to provide large power for the cutting tooth, and the phenomena of hole collapse, necking and the like are easy to generate at the opening of a foundation pit.
The invention provides the following technical scheme:
a rotary drill for reverse circulation pore-forming grouting piles and a construction process thereof comprise the following steps:
the foundation pit is arranged in a foundation, a drilling disc for drilling is arranged in the foundation pit, the top of the foundation is fixedly connected with a base, and the top of the base is rotatably connected with a rotating ring;
the lifting assembly is arranged in the base and used for controlling the lifting of the drilling disc;
the protective assembly is arranged on the outer wall of the rotating ring and used for preventing the foundation pit from hole collapse and necking down;
the drilling assembly is arranged in the drilling disc and used for cutting the stone blocks in the foundation pit and drilling;
and the grouting assembly is arranged at the top of the base and used for grouting slurry into the foundation pit.
In a possible design, the lifting unit includes the nut ring of fixed connection in the base, be equipped with a plurality of spouts, it is a plurality of in the swivel becket equal sliding connection has the slider, it is a plurality of one side fixedly connected with transfer line that the slider is close to each other, the outer wall of transfer line is equipped with the external screw thread, and external screw thread and nut ring screw-thread fit, the bottom of transfer line and the top fixed connection of drilling dish, the fixed cover of outer wall of swivel becket is equipped with the ring gear, the top fixedly connected with driving motor of base, driving motor's output shaft fixedly connected with and ring gear engaged with first gear.
In a possible design, the protection component establishes the disc at the swivel outer wall including the cover, a plurality of gag lever posts of top fixedly connected with of base, and the top of gag lever post slides and runs through the disc, a plurality of slides of bottom fixedly connected with of disc run through the cowl of base, and cowl's bottom extends to in the foundation ditch, the top sliding connection of disc has a plurality of screw rods, and the top of screw rod runs through the slider, the outer wall thread bush of screw rod is equipped with upper nut piece and lower nut piece, and upper nut piece and lower nut piece are located the top and the below of slider respectively.
In a possible design, drilling subassembly is including setting up the rotation groove in the drilling dish, it is connected with the extension rod to rotate the inslot rotation, the fixed cover of outer wall of extension rod is equipped with first bevel gear, the bottom of extension rod extends to the below of drilling dish, use the extension rod to arrange a plurality of transmission grooves as centre of a circle annular in the drilling dish, and transmission groove and rotation groove communicate mutually, the bottom inner wall of transmission groove rotates and runs through there is the pivot, the bottom of pivot is equipped with the detachable pick, the top fixedly connected with second gear of pivot, and two adjacent second gear intermeshing is close to the extension rod the top fixedly connected with second bevel gear of pivot, and second bevel gear meshes with first bevel gear mutually, use first bevel gear to arrange a plurality of feed inlets as centre of a circle annular in the drilling dish, one side inner wall fixedly connected with of feed inlet of mud is used for the scraper that strikes off mud and rubble.
In a possible design, the slip casting subassembly includes the U type frame of fixed connection at the base top, the top fixedly connected with reverse circulation grit pump of U type frame, the fixed cover of inlet of reverse circulation grit pump is equipped with the inlet pipe, and the bottom and the transfer line of inlet pipe are linked together, the fixed cover of liquid outlet of reverse circulation grit pump is equipped with the discharging pipe, the top of ground is equipped with the sedimentation tank, and the bottom of discharging pipe extends to in the sedimentation tank, be equipped with the mud passageway in the ground, and the both ends of mud passageway are linked together with foundation ditch and sedimentation tank respectively.
In a possible design, a plurality of flabellums of outer wall fixedly connected with of transfer line, during mud gushes into the foundation ditch through the mud passageway in the sedimentation tank, mud flows down, because the rotation of transfer line and drilling dish, the transfer line drives a plurality of flabellums and rotates, and the flabellum pivoted in-process can produce decurrent thrust to the mud in the foundation ditch, and then can make mud flow in the below of drilling dish fast.
In a possible design, use the extension rod to arrange a plurality of tesla valves as the centre of a circle annular in the drilling disc, during mud got into the tesla valve, the velocity of flow of mud can be accelerated through the effect of tesla valve, and then mud gushes into the below of drilling disc fast, and then can bring the rubble into the drilling disc through mud, makes things convenient for the reverse circulation grit pump to go into the sedimentation tank with mud and rubble.
In a possible design, a plurality of three angle knives of bottom fixedly connected with of drilling dish, it is a plurality of three angle knives of one side that three angle knives are close to each other all bumps with the outer wall of extension rod mutually, a plurality of swash plates of bottom outer wall fixedly connected with of extension rod, at the in-process that drilling dish rotated the lapse, extension rod and swash plate insert in earth, and the drilling dish can drive three angle knives and rotate, through three angle knives to the earth of extension rod outer wall, the stone is cut, make things convenient for moving down of later stage drilling dish, in addition when extension rod and swash plate insert in earth, can increase the area of contact of extension rod and earth through the swash plate, and then can make the extension rod keep quiescent condition at drilling dish pivoted in-process for the rotation of drive pivot and pick.
In a possible design, sliding connection has two diaphragms, two between the diaphragm through a plurality of connecting rod fixed connection, be located the connecting rod top the top fixedly connected with slide bar of diaphragm, and the top of slide bar slides and runs through transfer line and fixedly connected with carousel, and the top of carousel rotates with the bottom inner wall of U type frame to be connected, when appearing blockking up in the transfer line, the first gear antiport of driving motor drive, the transfer line begins the rebound, because the length of slide bar is fixed, when the transfer line shifts up, diaphragm and connecting rod are in quiescent condition under the effect of slide bar, and then at the in-process that the transfer line shifted up, diaphragm and connecting rod move down relatively, the transfer line can be dredged to diaphragm and connecting rod.
The construction process of the rotary drill for the reverse circulation hole-forming grouting pile comprises the following steps:
s1, firstly, starting a driving motor to drive a first gear to rotate, driving a rotating ring to rotate by the first gear through a toothed ring, driving a transmission rod to rotate by the rotating ring through the matching of a sliding groove and a sliding block, and rotating the transmission rod to move downwards under the action of a nut ring as the screw thread on the outer wall of the transmission rod is in threaded connection with the nut ring along with the rotation of the rotating ring;
s2, the transmission rod drives the drilling disc to rotate and rotate downwards, the drilling disc moves downwards, the extension rod and the inclined plate at the bottom end of the drilling disc are inserted into soil, the contact area between the extension rod and the soil is increased through the inclined plate, the extension rod is in a static state relative to the drilling disc in the rotation process of the drilling disc, due to the rotation of the drilling disc, the first bevel gear is meshed with the second bevel gear, the first bevel gear drives the second gear to rotate through the second bevel gear, due to the mutual meshing between every two adjacent second gears, the second gear drives the rotating shaft and the cutting teeth to rotate in the rotation process of the drilling disc, and when the drilling disc drives the cutting teeth to rotate, the cutting teeth can rotate, so that the cutting efficiency of the cutting teeth on stones in the foundation pit can be increased, and the phenomenon that the cutting teeth are chipped or passivated due to the collision between the cutting teeth and the stones can be avoided;
s3, starting slurry in the sedimentation tank to flow into the foundation pit through a slurry channel, wherein the slurry flows downwards, the transmission rod drives the fan blades to rotate due to the rotation of the transmission rod and the drilling disc, the downward thrust can be generated on the slurry in the foundation pit in the rotation process of the fan blades, the slurry can quickly flow into the lower part of the drilling disc, in addition, when the slurry enters the Tesla valve, the flow velocity of the slurry can be accelerated through the action of the Tesla valve, the slurry quickly flows into the lower part of the drilling disc, in addition, along with the rotation of the drilling disc, the broken stone and the slurry cut below the drilling disc can be brought into the drilling disc through the matching of the feeding port and the scraper, then, starting a reverse circulation sand-stone pump, the reverse circulation sand-stone pump can pump the broken stone and the slurry in the drilling disc into the sedimentation tank through the feeding pipe and the transmission rod, and after the broken stone and the slurry are sedimentated in the sedimentation tank, the slurry flows into the foundation pit again;
s4, when the drilling disc is drilled to a certain depth, the lower nut block is rotated to enable the lower nut block to move upwards until the lower nut block is about to touch the bottom of the sliding block, then the rotating ring continues to rotate the transmission rod to drive the sliding block to move downwards, the sliding block is in contact with the lower nut block, the sliding block drives the screw rod to move downwards through the lower nut block, the screw rod pushes the disc and the arc-shaped baffles to move downwards to enter a foundation pit, the arc-shaped baffles can be attached to the inner wall of the opening of the foundation pit, the phenomena of hole collapse, necking and the like in the subsequent drilling process are prevented, when the arc-shaped baffles extend to the certain depth, the rotating ring stops rotating, the lower nut block is rotated to enable the lower nut block to move downwards, and the lower nut block is prevented from being driven to move downwards in the later moving process of the sliding block;
and S5, when the transmission rod is blocked, the driving motor drives the first gear to rotate reversely, the transmission rod starts to move upwards, the transverse plate and the connecting rod are in a static state under the action of the sliding rod when the transmission rod moves upwards due to the fact that the length of the sliding rod is fixed, and then the transverse plate and the connecting rod move downwards relatively in the process that the transmission rod moves upwards, and the transverse plate and the connecting rod can dredge the transmission rod.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
According to the invention, a rotating shaft penetrates through the inner wall of the bottom of the transmission groove in a rotating manner, cutting teeth are arranged at the bottom end of the rotating shaft, second gears are fixedly connected to the top end of the rotating shaft, two adjacent second gears are meshed with each other, a second bevel gear is fixedly connected to the top end of the rotating shaft close to the extension rod, the second bevel gear is meshed with the first bevel gear, when the drilling disc rotates, the extension rod is in a static state relative to the drilling disc, the first bevel gear drives the second gear to rotate through the second bevel gear, and the cutting teeth can rotate when the drilling disc drives the cutting teeth to rotate due to the mutual meshing between the two adjacent second gears, so that the cutting teeth can rotate, the cutting efficiency of the cutting teeth on stones in a foundation pit can be increased, and the phenomenon that the cutting teeth are notched or passivated due to collision between the cutting teeth and the stones can be avoided;
according to the rotary drilling tool, a rotary groove is formed in the drilling disc, an extension rod is rotationally connected in the rotary groove, a first bevel gear is fixedly sleeved on the outer wall of the extension rod, the bottom end of the extension rod extends to the position below the drilling disc, a plurality of inclined plates are fixedly connected to the outer wall of the bottom of the extension rod, when the extension rod and the inclined plates are inserted into soil, the contact area between the extension rod and the soil can be increased through the inclined plates, and then the extension rod can be kept in a static state in the rotating process of the drilling disc and can be used for driving the rotating shaft and the cutting teeth to rotate;
according to the drilling device, the top of the base is fixedly connected with a plurality of limiting rods which penetrate through the disc in a sliding mode, the bottom of the disc is fixedly connected with a plurality of arc-shaped baffles which penetrate through the base in a sliding mode, the top of the disc is connected with a plurality of screw rods which penetrate through the sliding block in a sliding mode, the outer wall of each screw rod is sleeved with an upper nut block and a lower nut block in a threaded mode, after the drilling disc is drilled to a certain depth, the lower nut blocks are rotated to enable the lower nut blocks to move upwards until the lower nut blocks are about to touch the bottom of the sliding block, then the rotating ring continues to rotate the transmission rod to drive the sliding block to move downwards, the sliding block drives the screw rods to move downwards through the lower nut blocks and the arc-shaped baffles to move downwards into a foundation pit, the arc-shaped baffles can be attached to the inner wall of the opening of the foundation pit, and the phenomena of hole collapse, necking and the like in the subsequent drilling process are prevented;
according to the invention, two transverse plates are connected in the transmission rod in a sliding manner, the two transverse plates are fixedly connected through a plurality of connecting rods, a sliding rod is fixedly connected to the top of each transverse plate above the corresponding connecting rod, the top end of each sliding rod penetrates through the corresponding transmission rod in a sliding manner, a rotary table is fixedly connected to the top of each rotary table, and the top of each rotary table is rotatably connected with the inner wall of the bottom of the U-shaped frame.
According to the invention, the driving motor is started to drive the first gear to rotate, the rotating ring can be driven to rotate, the rotating ring can rotate to enable the drilling disc to rotate downwards, the extension rod is inserted into soil to keep static, and then in the process of rotating and downwards moving of the drilling disc, the rotating shaft and the cutting teeth rotate and rotate simultaneously, so that the cutting efficiency of soil blocks in a foundation pit is improved, the cutting teeth are prevented from being damaged, in addition, the sliding block can push the arc-shaped baffle to extend into the foundation pit by controlling the up-down movement of the lower nut block, and the phenomena of hole collapse, necking and the like at the opening of the foundation pit are prevented.
Drawings
Fig. 1 is a schematic sectional view of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional cross-sectional structure of a base and a rotating ring of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a three-dimensional structure of a matched arc-shaped baffle and a base of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
fig. 4 is a schematic three-dimensional structure diagram of a drilling disc of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a first-view three-dimensional cross-sectional structure of a drilling disc of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
FIG. 6 is a schematic three-dimensional structure diagram of a drilling assembly of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
fig. 7 is a second perspective three-dimensional cross-sectional structural diagram of a drilling disc of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
FIG. 8 is a schematic three-dimensional structure diagram of an extension rod of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a front cross-sectional view of a transmission rod of a rotary drill for a reverse circulation hole-forming grouting pile according to an embodiment of the present invention in the second embodiment.
Reference numerals:
1. a foundation; 2. a foundation pit; 3. a sedimentation tank; 4. a base; 5. a rotating ring; 6. drilling a hole plate; 7. a slurry channel; 8. a toothed ring; 9. a drive motor; 10. a first gear; 11. a nut ring; 12. a transmission rod; 13. a chute; 14. a slider; 15. a disc; 16. a limiting rod; 17. an arc-shaped baffle plate; 18. a screw; 19. an upper nut block; 20. a lower nut block; 21. a rotating groove; 22. an extension rod; 23. a first bevel gear; 24. a transmission groove; 25. a rotating shaft; 26. a cutting pick; 27. a second gear; 28. a second bevel gear; 29. a feed inlet; 30. a scraper; 31. a reverse circulation sand pump; 32. a feed pipe; 33. a discharge pipe; 34. a U-shaped frame; 35. a fan blade; 36. a Tesla valve; 37. a triangular knife; 38. a sloping plate; 39. a turntable; 40. a slide bar; 41. a transverse plate; 42. a connecting rod.
Detailed Description
The embodiments of the present invention will be described below with reference to the drawings.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "mounted" are to be interpreted broadly, e.g., "connected" may or may not be detachably connected; may be directly connected or indirectly connected through an intermediate. Further, "communication" may be direct communication or indirect communication through an intermediary. The term "fixed" means that they are connected to each other and the relative positional relationship after the connection is not changed. Directional phrases used in embodiments of the present invention, such as "inner", "outer", "top", "bottom", and the like, refer only to the orientation of the attached drawings and, therefore, are used in order to better and more clearly describe and understand the embodiments of the present invention, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the embodiments of the present invention.
In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiment of the present invention, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Example 1
Referring to fig. 1 and 2, the rotary drill for the reverse circulation hole-forming grouting pile of the present embodiment includes:
set up foundation ditch 2 in foundation 1, be equipped with the drilling dish 6 that is used for drilling in foundation ditch 2, the top fixedly connected with base 4 of foundation 1, the top of base 4 is rotated and is connected with swivel ring 5, lifting unit, the setting is in base 4, a lift for controlling drilling dish 6, protective component, the outer wall of setting at swivel ring 5, a hole for preventing foundation ditch 2 from collapsing, the necking down phenomenon appears, the drilling subassembly, the setting is in drilling dish 6, be used for cutting the stone in foundation ditch 2, and drilling, the slip casting subassembly, the setting is at the top of base 4, be used for watering mud in foundation ditch 2, use extension rod 22 to arrange a plurality of tesla valves 36 as centre of a circle annular in drilling dish 6, mud gets into tesla valve 36, the velocity of flow of mud can accelerate through the effect of tesla valve 36, and then mud gushes into the below of drilling dish 6 fast, and then can bring the rubble into drilling dish 6 through mud, make things convenient for reverse circulation pump 31 go into grit and gravel pump sedimentation tank 3 with rubble.
Referring to fig. 2 and 3, the lifting unit includes the nut ring 11 through bolt fixed connection in base 4, be equipped with a plurality of spouts 13 in the swivel ring 5, equal sliding connection has slider 14 in a plurality of spouts 13, bolt fixedly connected with transfer line 12 is passed through to one side that a plurality of sliders 14 are close to each other, the outer wall of transfer line 12 is equipped with the external screw thread, and external screw thread and 11 screw-thread fit of nut ring, bolt fixed connection is passed through with the top of drilling dish 6 in the bottom of transfer line 12, the outer wall fixed cover of swivel ring 5 is equipped with ring gear 8, bolt fixedly connected with driving motor 9 is passed through at the top of base 4, driving motor 9's output shaft fixedly connected with and ring gear 8 engaged with first gear 10.
Referring to fig. 3, the protection assembly includes a disc 15 sleeved on the outer wall of the rotating ring 5, the top of the base 4 is fixedly connected with a plurality of limiting rods 16 through bolts, the top ends of the limiting rods 16 slidably penetrate through the disc 15, the bottom of the disc 15 is fixedly connected with a plurality of arc-shaped baffles 17 slidably penetrating through the base 4 through bolts, the bottom ends of the arc-shaped baffles 17 extend into the foundation pit 2, the top of the disc 15 is slidably connected with a plurality of screws 18, the top ends of the screws 18 penetrate through the sliding block 14, the outer wall of each screw 18 is in threaded sleeve connection with an upper nut block 19 and a lower nut block 20, the upper nut block 19 and the lower nut block 20 are respectively located above and below the sliding block 14, after the drilling disc 6 drills to a certain depth, the lower nut block 20 is rotated to move the lower nut block 20 upwards until the lower nut block 20 is about to touch the bottom of the sliding block 14, then the rotating ring 5 continues to rotate the driving rod 12 to drive the screws 18 to move downwards and move downwards to enter the foundation pit 2 through the arc-shaped baffles 17, and further enable the arc-shaped baffles 17 to be attached to the inner wall at the opening of the foundation pit 2, and prevent the phenomenon of the foundation pit from occurring in the subsequent drilling process, and collapse.
Referring to fig. 5 and 6, the drilling assembly includes a rotating groove 21 disposed in the drilling disc 6, an extension rod 22 is rotationally connected in the rotating groove 21, a first bevel gear 23 is fixedly sleeved on an outer wall of the extension rod 22, a bottom end of the extension rod 22 extends to a position below the drilling disc 6, a plurality of transmission grooves 24 are annularly arranged in the drilling disc 6 with the extension rod 22 as a circle center, the transmission grooves 24 are communicated with the rotating groove 21, a rotating shaft 25 penetrates through an inner wall of a bottom of the transmission grooves 24 in a rotating manner, a detachable cutting pick 26 is disposed at a bottom end of the rotating shaft 25, a second gear 27 is fixedly connected to a top end of the rotating shaft 25, two adjacent second gears 27 are meshed with each other, a second bevel gear 28 is fixedly connected to a top end of the rotating shaft 25 close to the extension rod 22, the second bevel gear 28 is meshed with the first bevel gear 23, a plurality of feed inlets 29 are annularly arranged in the drilling disc 6 with the first bevel gear 23 as a circle center, a scraper 30 for scraping slurry and rubble is fixedly connected to the scraper 30 for scraping the slurry and the stone, when the drilling disc 6 rotates, the drilling disc 6 is rotated, the rotating shaft 26 and the rotating efficiency of the cutting pick 26 is increased, the cutting stone block can be further driven by the rotating shaft 26, and the rotating efficiency of the rotating shaft 26, and the rotating stone block can be increased when the cutting stone.
Referring to fig. 1, the slip casting subassembly includes the U type frame 34 at 4 tops of base through bolt fixed connection, bolt fixed connection has reverse circulation grit pump 31 is passed through at the top of U type frame 34, the fixed cover of inlet of reverse circulation grit pump 31 is equipped with inlet pipe 32, and the bottom of inlet pipe 32 is linked together with transfer line 12, the fixed cover of outlet of reverse circulation grit pump 31 is equipped with discharging pipe 33, the top of foundation 1 is equipped with sedimentation tank 3, and the bottom of discharging pipe 33 extends to in sedimentation tank 3, be equipped with mud passageway 7 in the foundation 1, and the both ends of mud passageway 7 are linked together with foundation ditch 2 and sedimentation tank 3 respectively.
Referring to fig. 2, the outer wall of the transmission rod 12 is fixedly connected with a plurality of fan blades 35 through bolts, mud in the sedimentation tank 3 flows into the foundation pit 2 through the mud channel 7, the mud flows downwards, the transmission rod 12 drives the plurality of fan blades 35 to rotate due to rotation of the transmission rod 12 and the drilling disc 6, downward thrust can be generated on the mud in the foundation pit 2 in the rotating process of the fan blades 35, and then the mud can flow into the lower portion of the drilling disc 6 quickly.
Referring to fig. 5 and 7, a plurality of three angle knives 37 of bolt fixedly connected with are passed through to the bottom of drilling disc 6, one side that a plurality of three angle knives 37 are close to each other all bumps with the outer wall of extension rod 22, a plurality of swash plates 38 of bottom outer wall fixedly connected with of extension rod 22, at the rotatory in-process that moves down of drilling disc 6, extension rod 22 and swash plate 38 insert in earth, and drilling disc 6 can drive three angle knives 37 and rotate, earth to extension rod 22 outer wall through three angle knives 37, the stone cuts, make things convenient for moving down of later stage drilling disc 6, in addition when extension rod 22 and swash plate 38 insert in earth, can increase the area of contact of extension rod 22 with earth through swash plate 38, and then can make extension rod 22 keep quiescent condition at drilling disc 6 pivoted in-process, a rotation for drive pivot 25 and pick 26.
Example 2
Referring to fig. 1 and 2, the rotary drill for the reverse circulation hole-forming grouting pile of the present embodiment includes:
set up foundation ditch 2 in foundation 1, be equipped with the drilling dish 6 that is used for drilling in foundation ditch 2, the top fixedly connected with base 4 of foundation 1, the top of base 4 is rotated and is connected with swivel ring 5, lifting unit, the setting is in base 4, a lift for controlling drilling dish 6, protective component, the outer wall of setting at swivel ring 5, a hole for preventing foundation ditch 2 from collapsing, the necking down phenomenon appears, the drilling subassembly, the setting is in drilling dish 6, be used for cutting the stone in foundation ditch 2, and drilling, the slip casting subassembly, the setting is at the top of base 4, be used for watering mud in foundation ditch 2, use extension rod 22 to arrange a plurality of tesla valves 36 as centre of a circle annular in drilling dish 6, mud gets into tesla valve 36, the velocity of flow of mud can accelerate through the effect of tesla valve 36, and then mud gushes into the below of drilling dish 6 fast, and then can bring the rubble into drilling dish 6 through mud, make things convenient for reverse circulation pump 31 go into grit and gravel pump sedimentation tank 3 with rubble.
Refer to fig. 2 and fig. 3, lifting unit includes through the nut ring 11 of bolt fixed connection in base 4, be equipped with a plurality of spouts 13 in the swivel becket 5, equal sliding connection has slider 14 in a plurality of spouts 13, bolt fixedly connected with transfer line 12 is passed through to one side that a plurality of sliders 14 are close to each other, the outer wall of transfer line 12 is equipped with the external screw thread, and external screw thread and 11 screw-thread fit of nut ring, bolt fixed connection is passed through with the top of drilling dish 6 in the bottom of transfer line 12, the outer wall fixed cover of swivel becket 5 is equipped with ring gear 8, bolt fixedly connected with driving motor 9 is passed through at the top of base 4, driving motor 9's output shaft fixedly connected with and ring gear 8 engaged with first gear 10.
Referring to fig. 3, the protection assembly includes a disc 15 sleeved on the outer wall of the rotating ring 5, the top of the base 4 is fixedly connected with a plurality of limiting rods 16 through bolts, the top ends of the limiting rods 16 slidably penetrate through the disc 15, the bottom of the disc 15 is fixedly connected with a plurality of arc-shaped baffles 17 slidably penetrating through the base 4 through bolts, the bottom ends of the arc-shaped baffles 17 extend into the foundation pit 2, the top of the disc 15 is slidably connected with a plurality of screws 18, the top ends of the screws 18 penetrate through the sliding block 14, the outer wall of each screw 18 is in threaded sleeve connection with an upper nut block 19 and a lower nut block 20, the upper nut block 19 and the lower nut block 20 are respectively located above and below the sliding block 14, after the drilling disc 6 drills to a certain depth, the lower nut block 20 is rotated to move the lower nut block 20 upwards until the lower nut block 20 is about to touch the bottom of the sliding block 14, then the rotating ring 5 continues to rotate the driving rod 12 to drive the screws 18 to move downwards and move downwards to enter the foundation pit 2 through the arc-shaped baffles 17, and further enable the arc-shaped baffles 17 to be attached to the inner wall at the opening of the foundation pit 2, and prevent the phenomenon of the foundation pit from occurring in the subsequent drilling process, and collapse.
Referring to fig. 5 and 6, the drilling assembly includes a rotating groove 21 disposed in the drilling disc 6, an extension rod 22 is rotationally connected in the rotating groove 21, a first bevel gear 23 is fixedly sleeved on an outer wall of the extension rod 22, a bottom end of the extension rod 22 extends to a position below the drilling disc 6, a plurality of transmission grooves 24 are annularly arranged in the drilling disc 6 with the extension rod 22 as a circle center, the transmission grooves 24 are communicated with the rotating groove 21, a rotating shaft 25 penetrates through an inner wall of a bottom of the transmission grooves 24 in a rotating manner, a detachable cutting pick 26 is disposed at a bottom end of the rotating shaft 25, a second gear 27 is fixedly connected to a top end of the rotating shaft 25, two adjacent second gears 27 are meshed with each other, a second bevel gear 28 is fixedly connected to a top end of the rotating shaft 25 close to the extension rod 22, the second bevel gear 28 is meshed with the first bevel gear 23, a plurality of feed inlets 29 are annularly arranged in the drilling disc 6 with the first bevel gear 23 as a circle center, a scraper 30 for scraping slurry and rubble is fixedly connected to the scraper 30 for scraping the slurry and the stone, when the drilling disc 6 rotates, the drilling disc 6 is rotated, the rotating shaft 26 and the rotating efficiency of the cutting pick 26 is increased, the cutting stone block can be further driven by the rotating shaft 26, and the rotating efficiency of the rotating shaft 26, and the rotating stone block can be increased when the cutting stone.
Referring to fig. 1, the slip casting subassembly includes the U type frame 34 at 4 tops of base through bolt fixed connection, bolt fixed connection has reverse circulation grit pump 31 is passed through at the top of U type frame 34, the fixed cover of inlet of reverse circulation grit pump 31 is equipped with inlet pipe 32, and the bottom of inlet pipe 32 is linked together with transfer line 12, the fixed cover of outlet of reverse circulation grit pump 31 is equipped with discharging pipe 33, the top of foundation 1 is equipped with sedimentation tank 3, and the bottom of discharging pipe 33 extends to in sedimentation tank 3, be equipped with mud passageway 7 in the foundation 1, and the both ends of mud passageway 7 are linked together with foundation ditch 2 and sedimentation tank 3 respectively.
Referring to fig. 2, the outer wall of the transmission rod 12 is fixedly connected with a plurality of fan blades 35 through bolts, mud in the sedimentation tank 3 flows into the foundation pit 2 through the mud channel 7, the mud flows downwards, the transmission rod 12 drives the plurality of fan blades 35 to rotate due to rotation of the transmission rod 12 and the drilling disc 6, downward thrust can be generated on the mud in the foundation pit 2 in the rotating process of the fan blades 35, and then the mud can flow into the lower portion of the drilling disc 6 quickly.
Referring to fig. 5 and 7, a plurality of three angle knives 37 of bolt fixedly connected with are passed through to the bottom of drilling dish 6, one side that a plurality of three angle knives 37 are close to each other all bumps with the outer wall of extension rod 22, a plurality of swash plates 38 of bottom outer wall fixedly connected with of extension rod 22, at the rotatory in-process that moves down of drilling dish 6, extension rod 22 and swash plate 38 insert in the earth, and drilling dish 6 can drive three angle knives 37 and rotate, through three angle knives 37 to the earth of extension rod 22 outer wall, the stone cuts, make things convenient for moving down of later stage drilling dish 6, in addition when extension rod 22 and swash plate 38 insert in the earth, can increase the area of contact of extension rod 22 and earth through swash plate 38, and then can make extension rod 22 keep quiescent condition at drilling dish 6 pivoted in-process, a rotation for drive pivot 25 and pick 26.
Referring to fig. 9, two transverse plates 41 are slidably connected in the transmission rod 12, the two transverse plates 41 are fixedly connected through a plurality of connecting rods 42, a sliding rod 40 is fixedly connected to the top of the transverse plate 41 above the connecting rods 42, the top end of the sliding rod 40 slidably penetrates through the transmission rod 12 and is fixedly connected with a rotating disc 39, and the top of the rotating disc 39 is rotatably connected with the inner wall of the bottom of the U-shaped frame 34, when the transmission rod 12 is blocked, the driving motor 9 drives the first gear 10 to rotate reversely, the transmission rod 12 starts to move upwards, due to the fixed length of the sliding rod 40, when the transmission rod 12 moves upwards, the transverse plates 41 and the connecting rods 42 are in a static state under the action of the sliding rod 40, and further, in the process that the transmission rod 12 moves upwards, the transverse plates 41 and the connecting rods 42 move downwards relatively, and the transverse plates 41 and the connecting rods 42 can dredge the transmission rod 12.
A construction process of a rotary drill for a reverse circulation pore-forming grouting pile comprises the following steps:
s1, firstly, a driving motor 9 is started to drive a first gear 10 to rotate, the first gear 10 drives a rotating ring 5 to rotate through a toothed ring 8, the rotating ring 5 drives a transmission rod 12 to rotate through the matching of a sliding groove 13 and a sliding block 14, and as the threads on the outer wall of the transmission rod 12 are in threaded connection with a nut ring 11, the transmission rod 12 rotates to move downwards under the action of the nut ring 11 along with the rotation of the rotating ring 5;
s2, the transmission rod 12 drives the drilling disc 6 to rotate and move downwards, as the drilling disc 6 moves downwards, the extension rod 22 and the inclined plate 38 at the bottom end of the drilling disc 6 are inserted into soil, the contact area between the extension rod 22 and the soil is increased through the inclined plate 38, and then the extension rod 22 is in a static state relative to the drilling disc 6 in the rotating process of the drilling disc 6, as the drilling disc 6 rotates, the first bevel gear 23 is meshed with the second bevel gear 28, the first bevel gear 23 drives the second gear 27 to rotate through the second bevel gear 28, and as the adjacent two second gears 27 are meshed with each other, the second gear 27 drives the rotating shaft 25 and the cutting teeth 26 to rotate in the rotating process of the drilling disc 6, when the drilling disc 6 drives the cutting teeth 26 to rotate, the cutting teeth 26 can also rotate, so that the cutting efficiency of the cutting teeth 26 on stones in the foundation pit 2 can be increased, and the phenomenon that the cutting teeth 26 are chipped or passivated due to collision with the cutting teeth 26 can also be avoided;
s3, starting slurry in the sedimentation tank 3 to flow into the foundation pit 2 through the slurry channel 7, enabling the slurry to flow downwards, enabling the transmission rod 12 and the drilling disc 6 to rotate, enabling the transmission rod 12 to drive the fan blades 35 to rotate, enabling the fan blades 35 to generate downward thrust on the slurry in the foundation pit 2 in the rotating process, enabling the slurry to flow into the lower portion of the drilling disc 6 quickly, enabling the slurry to enter the Tesla valve 36, enabling the flow rate of the slurry to be accelerated through the action of the Tesla valve 36, enabling the slurry to flow into the lower portion of the drilling disc 6 quickly, enabling the feed inlet 29 and the scraper 30 to be matched with each other to enable crushed stone and slurry cut below the drilling disc 6 to be brought into the drilling disc 6 along with the rotation of the drilling disc 6, then starting the reverse circulation sand pump 31, enabling the sand and stone pump 31 to pump the crushed stone and slurry in the drilling disc 6 into the sedimentation tank 3 through the feed pipe 32 and the transmission rod 12, enabling the slurry to flow into the foundation pit 2 again after the slurry and the crushed stone are settled in the sedimentation tank 3;
s4, when the drilling disc 6 is drilled to a certain depth, the lower nut block 20 is rotated to enable the lower nut block 20 to move upwards until the lower nut block 20 is about to touch the bottom of the sliding block 14, then the rotating ring 5 continues to rotate the transmission rod 12 to drive the sliding block 14 to move downwards, the sliding block 14 is touched with the lower nut block 20, the sliding block 14 drives the screw rod 18 to move downwards through the lower nut block 20, the screw rod 18 pushes the disc 15 and the arc-shaped baffles 17 to move downwards to enter the foundation pit 2, the arc-shaped baffles 17 can be attached to the inner wall of the opening of the foundation pit 2, the phenomena of hole collapse, necking and the like in the subsequent drilling process are prevented, when the arc-shaped baffles 17 extend to the certain depth, the rotating ring 5 stops rotating, the lower nut block 20 is rotated to enable the lower nut block 20 to move downwards, and the lower nut block 20 is prevented from being driven to move downwards in the later-stage moving process of the sliding block 14;
s5, when the transmission rod 12 is blocked, the driving motor 9 drives the first gear 10 to rotate reversely, the transmission rod 12 starts to move upwards, and due to the fixed length of the sliding rod 40, when the transmission rod 12 moves upwards, the transverse plate 41 and the connecting rod 42 are in a static state under the action of the sliding rod 40, and further, in the process that the transmission rod 12 moves upwards, the transverse plate 41 and the connecting rod 42 move downwards relatively, and the transverse plate 41 and the connecting rod 42 can dredge the transmission rod 12.
However, as is well known to those skilled in the art, the working principle and wiring method of the reverse circulation sand pump 31 and the driving motor 9 are common and are conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention; the embodiments of the invention and the features of the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a reverse circulation pore-forming pile is with rotary drill which characterized in that includes:
the foundation pit structure comprises a foundation pit (2) arranged in a foundation (1), wherein a drilling disc (6) for drilling is arranged in the foundation pit (2), the top of the foundation (1) is fixedly connected with a base (4), and the top of the base (4) is rotatably connected with a rotating ring (5);
the lifting assembly is arranged in the base (4) and used for controlling the lifting of the drilling disc (6);
the protective assembly is arranged on the outer wall of the rotating ring (5) and used for preventing the foundation pit (2) from hole collapse and necking down;
the drilling assembly is arranged in the drilling disc (6) and used for cutting stones in the foundation pit (2) and drilling holes;
and the grouting component is arranged at the top of the base (4) and is used for grouting slurry into the foundation pit (2).
2. The rotary drill for the reverse circulation hole-forming grouting pile is characterized in that the lifting assembly comprises a nut ring (11) fixedly connected in a base (4), a plurality of sliding grooves (13) are formed in the rotating ring (5), a plurality of sliding blocks (14) are slidably connected in the sliding grooves (13), a plurality of transmission rods (12) are fixedly connected to one sides, close to each other, of the sliding blocks (14), external threads are formed in the outer wall of each transmission rod (12) and are in threaded fit with the nut ring (11), the bottom end of each transmission rod (12) is fixedly connected with the top of a drilling disc (6), a toothed ring (8) is fixedly arranged on the outer wall of the rotating ring (5), a driving motor (9) is fixedly connected to the top of the base (4), and a first gear (10) meshed with the toothed ring (8) is fixedly connected to an output shaft of the driving motor (9).
3. The rotary drill for the reverse circulation pore-forming grouting pile is characterized in that the protection assembly comprises a disc (15) sleeved on the outer wall of a rotating ring (5), a plurality of limiting rods (16) are fixedly connected to the top of the base (4), the top ends of the limiting rods (16) penetrate through the disc (15) in a sliding mode, a plurality of arc-shaped baffle plates (17) penetrating through the base (4) in a sliding mode are fixedly connected to the bottom of the disc (15), the bottom ends of the arc-shaped baffle plates (17) extend into the foundation pit (2), a plurality of screw rods (18) are slidably connected to the top of the disc (15), the top ends of the screw rods (18) penetrate through a sliding block (14), an upper nut block (19) and a lower nut block (20) are sleeved on the outer wall threads of the screw rods (18), and the upper nut block (19) and the lower nut block (20) are located above and below the sliding block (14) respectively.
4. The rotary drill for the reverse circulation pore-forming grouting pile according to claim 1, wherein the drilling assembly comprises a rotating groove (21) arranged in a drilling disc (6), an extension rod (22) is rotationally connected in the rotating groove (21), a first bevel gear (23) is fixedly arranged on the outer wall of the extension rod (22), the bottom end of the extension rod (22) extends to the lower side of the drilling disc (6), a plurality of transmission grooves (24) are annularly arranged in the drilling disc (6) by the extension rod (22) as the circle center, the transmission grooves (24) are communicated with the rotating groove (21), a rotating shaft (25) penetrates through the inner wall of the bottom of the transmission grooves (24), the bottom end of the rotating shaft (25) is provided with a detachable cutting pick (26), the top end of the rotating shaft (25) is fixedly connected with a second gear (27), two adjacent second gears (27) are mutually meshed, the top end of the rotating shaft (25) is fixedly connected with a second bevel gear (28), the second bevel gear (28) is meshed with the first bevel gear (23), and a plurality of scraping scrapers are arranged on one side of the inner wall of the first bevel gear (23) and are used for scraping slurry, and the first bevel gear (29) is arranged on one side of the inner wall of the first bevel gear (23).
5. The rotary drill for the reverse circulation hole-forming grouting pile is characterized in that the grouting assembly comprises a U-shaped frame (34) fixedly connected to the top of a base (4), a reverse circulation sand pump (31) is fixedly connected to the top of the U-shaped frame (34), a feed pipe (32) is fixedly sleeved on a liquid inlet of the reverse circulation sand pump (31), the bottom end of the feed pipe (32) is communicated with a transmission rod (12), a discharge pipe (33) is fixedly sleeved on a liquid outlet of the reverse circulation sand pump (31), a sedimentation tank (3) is arranged at the top of the foundation (1), the bottom end of the discharge pipe (33) extends into the sedimentation tank (3), a slurry channel (7) is arranged in the foundation (1), and two ends of the slurry channel (7) are respectively communicated with a foundation pit (2) and the sedimentation tank (3).
6. The rotary drill for the reverse circulation hole-forming grouting pile is characterized in that a plurality of fan blades (35) are fixedly connected to the outer wall of the transmission rod (12).
7. The rotary drill for the reverse circulation hole-forming grouting pile is characterized in that a plurality of Tesla valves (36) are annularly arranged in the drilling disc (6) by taking the extension rod (22) as a circle center.
8. The rotary drill for the reverse circulation hole-forming grouting pile according to claim 1, wherein a plurality of triangular cutters (37) are fixedly connected to the bottom of the drilling disc (6), one sides of the triangular cutters (37) close to each other are in contact with the outer wall of the extension rod (22), and a plurality of inclined plates (38) are fixedly connected to the outer wall of the bottom of the extension rod (22).
9. The rotary drill for the reverse circulation hole-forming grouting pile according to claim 2, wherein two transverse plates (41) are slidably connected in the transmission rod (12), the two transverse plates (41) are fixedly connected through a plurality of connecting rods (42), a sliding rod (40) is fixedly connected to the top of each transverse plate (41) above each connecting rod (42), the top end of each sliding rod (40) penetrates through the transmission rod (12) in a sliding manner and is fixedly connected with a rotary table (39), and the top of each rotary table (39) is rotatably connected with the inner wall of the bottom of the U-shaped frame (34).
10. The construction process of the rotary drill for the reverse circulation hole-forming grouting pile according to any one of claims 1 to 9, characterized by comprising the following steps:
s1, firstly, a driving motor (9) is started to drive a first gear (10) to rotate, the first gear (10) drives a rotating ring (5) to rotate through a toothed ring (8), the rotating ring (5) drives a transmission rod (12) to rotate through the matching of a sliding groove (13) and a sliding block (14), and as the threads on the outer wall of the transmission rod (12) are in threaded connection with a nut ring (11), the transmission rod (12) rotates and moves downwards under the action of the nut ring (11) along with the rotation of the rotating ring (5);
s2, the transmission rod (12) drives the drilling disc (6) to rotate and move downwards, the drilling disc (6) moves downwards, the extension rod (22) and the inclined plate (38) at the bottom end of the drilling disc (6) are inserted into soil, the contact area of the extension rod (22) and the soil is increased through the inclined plate (38), the extension rod (22) is in a static state relative to the drilling disc (6) in the rotating process of the drilling disc (6), the first bevel gear (23) is meshed with the second bevel gear (28) due to the rotation of the drilling disc (6), the first bevel gear (23) drives the second gear (27) to rotate through the second bevel gear (28), the second gear (27) is meshed with each other in the rotating process of the drilling disc (6), the second gear (27) drives the rotating shaft (25) and the cutting pick (26) to rotate, and when the drilling disc (6) drives the cutting pick (26) to rotate, the cutting efficiency of the cutting pick (26) in the stone block (2) can be increased, and the cutting efficiency of the cutting pick (26) and the cutting pit or a notch caused by collision of the cutting pick (26) can be avoided;
s3, then, starting slurry in the sedimentation tank (3) to flow into the foundation pit (2) through a slurry channel (7), enabling the slurry to flow downwards, enabling the slurry to flow into the lower part of the drilling disc (6) quickly due to the rotation of the transmission rod (12) and the drilling disc (6), enabling the transmission rod (12) to drive the fan blades (35) to rotate, enabling the fan blades (35) to generate downward thrust on the slurry in the foundation pit (2) in the rotating process, enabling the slurry to flow into the lower part of the drilling disc (6) quickly, enabling the slurry to enter the Tesla valve (36), enabling the flow rate of the slurry to be accelerated under the action of the Tesla valve (36), enabling the slurry to flow into the drilling disc (6) quickly, enabling the slurry to flow into the lower part of the drilling disc (6), enabling the feed inlet (29) and the scraper (30) to be matched with each other along with the rotation of the drilling disc (6), enabling crushed stones and the slurry cut under the drilling disc (6) to be brought into the drilling disc (6) through the feed pipe (32) and the scraper (30), then, starting the reverse circulation pump (31), enabling the sand stone pump (31) to pump the slurry in the sand and the slurry in the sedimentation tank (3) to be pumped into the foundation pit (2) again;
s4, when the drilling disc (6) is drilled to a certain depth, the lower nut block (20) is rotated, the lower nut block (20) is enabled to move upwards until the lower nut block (20) is about to touch the bottom of the sliding block (14), then the rotating ring (5) continues to rotate the transmission rod (12) to drive the sliding block (14) to move downwards, the sliding block (14) is touched with the lower nut block (20), the sliding block (14) drives the screw rod (18) to move downwards through the lower nut block (20), the screw rod (18) pushes the disc (15) and the arc-shaped baffles (17) to move downwards to enter the foundation pit (2), the arc-shaped baffles (17) can be enabled to be attached to the inner wall of the opening of the foundation pit (2), the phenomena of hole collapse, necking and the like in the subsequent drilling process are prevented, when the arc-shaped baffles (17) extend to a certain depth, the rotating ring (5) stops rotating, the lower nut block (20) is rotated, the lower nut block (20) is enabled to move downwards, and the lower nut block (20) is prevented from being driven to move downwards in the later-stage moving process of the sliding block (14);
s5, when the transmission rod (12) is blocked, the driving motor (9) drives the first gear (10) to rotate reversely, the transmission rod (12) starts to move upwards, due to the fact that the length of the sliding rod (40) is fixed, when the transmission rod (12) moves upwards, the transverse plate (41) and the connecting rod (42) are in a static state under the effect of the sliding rod (40), further, in the process that the transmission rod (12) moves upwards, the transverse plate (41) and the connecting rod (42) move downwards relatively, and the transverse plate (41) and the connecting rod (42) can dredge the transmission rod (12).
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| CN115075655A (en) * | 2022-08-23 | 2022-09-20 | 江苏龙绘市政工程有限公司 | Foundation ditch protective assembly for municipal building construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116427912A (en) * | 2023-03-08 | 2023-07-14 | 中国长江三峡集团有限公司 | Method, device, electronic equipment and storage medium for determining mud pressure range |
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| CN115559667B (en) | 2023-04-18 |
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