CN113464052A - Reverse circulation efficient pore-forming construction device and method for underwater cast-in-situ bored pile - Google Patents
Reverse circulation efficient pore-forming construction device and method for underwater cast-in-situ bored pile Download PDFInfo
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- CN113464052A CN113464052A CN202110536820.2A CN202110536820A CN113464052A CN 113464052 A CN113464052 A CN 113464052A CN 202110536820 A CN202110536820 A CN 202110536820A CN 113464052 A CN113464052 A CN 113464052A
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- 238000010276 construction Methods 0.000 title claims abstract description 42
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title description 10
- 239000002002 slurry Substances 0.000 claims abstract description 57
- 238000004062 sedimentation Methods 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 65
- 230000000670 limiting effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 3
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 3
- 241001330002 Bambuseae Species 0.000 abstract description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 3
- 239000011425 bamboo Substances 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000001914 filtration Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
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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
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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
- E21B12/00—Accessories for drilling tools
- E21B12/06—Mechanical cleaning devices
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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
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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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
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
- E02D2250/0076—Drilling
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
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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)
- Geochemistry & Mineralogy (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The application relates to a reverse circulation efficient pore-forming construction device and a reverse circulation efficient pore-forming construction method for an underwater cast-in-situ bored pile, which relate to the field of cast-in-situ bored pile construction; manufacturing a mud pit; designing a mud pipe and a mud groove; drilling; the slurry is circulated reversely; the mud firstly enters a sedimentation tank before entering the mud tank, and the mud in the sedimentation tank overflows into the mud tank. This application lays the mud pit in normal position on drilling platform, has avoided laying of complicated mud long-distance pipeline, has reduced the construction degree of difficulty, has improved the effect of efficiency of construction, adopts gate control mud pit to advance thick liquid, stop thick liquid, utilizes the interior flood peak of mud difference position reverse circulation system to make the steel protect a section of thick bamboo break away from the control of mud pit thick liquid face simultaneously, has reduced the hole risk of collapsing, has improved pore-forming efficiency.
Description
Technical Field
The application relates to the field of cast-in-place pile construction, in particular to a reverse circulation efficient pore-forming construction device and method for an underwater cast-in-place pile.
Background
At present, the construction of the underwater bored pile often faces the problem of difficult slurry pipeline arrangement, the slurry can not be supplied by an open ditch or an open ditch like a land pile foundation, generally, pipelines such as a steel pipe or a reinforced corrugated pipe and the like are adopted to seal and connect a shore mud pit, an underwater steel casing and a pile hole, and a high-flow pressurized-flow slurry supply system is formed by utilizing the principle of a communicating device.
When the process is adopted for construction, a large number of pipelines need to be arranged below the platform, and the construction efficiency is low due to poor underwater construction operation environment and high arrangement difficulty.
Disclosure of Invention
In order to solve the problem that the underwater cast-in-situ bored pile is low in efficiency, the application provides an underwater cast-in-situ bored pile reverse circulation efficient pore-forming construction device and method.
The application provides a reverse circulation efficient pore-forming construction method for an underwater cast-in-situ bored pile, which adopts the following technical scheme:
a reverse circulation high-efficiency pore-forming construction method of a cast-in-situ bored pile in water comprises the following steps,
construction preparation, namely, after a drilling platform is erected, a steel casing is arranged, and a drilling machine is arranged above the steel casing;
manufacturing a mud pit, and installing a gate and a control device for controlling the opening and closing of the gate at the opening at the bottom of mud;
the mud pipe is connected with the bottom of the mud pool, the other end of the mud pipe is connected with the mud tank, and the mud tank is positioned above the steel casing;
drilling, wherein the drilling machine starts to drill holes, and slurry enters the drilled holes after passing through a slurry groove from a slurry pool;
the mud is subjected to reverse circulation work, and the mud is sucked into the mud pool from the drill hole through the hollow drill rod, so that the reverse circulation work is realized; the mud firstly enters a sedimentation tank before entering the mud tank, and the mud in the sedimentation tank overflows into the mud tank.
By adopting the technical scheme, the mud is sucked into the drilling machine through the hollow drill rod from the inside of the drill hole, the mud is firstly conveyed into the sedimentation tank from the conveying pipe, after the mud is precipitated in the sedimentation tank, the mud enters the mud tank from the overflow port, the mud in the mud tank realizes the control of the flow of the mud through the control gate, the mud enters the mud tank through the mud pipe, the mud in the mud tank enters the drill hole, the water head in the steel casing breaks away from the mud surface control of the mud tank, the water head is higher, the hole collapse is not easy, and the number of the steel casings does not need to be increased. The method has the advantages of safe and reliable use, less investment, strong applicability and easy mastering of the technology by construction technicians.
Optionally, a conveying pipe for conveying the hollow drill rod to suck out the slurry is connected between the slurry outlet of the drilling machine and the sedimentation tank.
Through adopting above-mentioned technical scheme, be convenient for mud carry to the mud inslot.
Optionally, the control device includes a support fixedly connected to the mud pit, a slider fixedly connected to the gate, a lead screw rotatably connected to the support, and a stopper limiting rotation of the gate, the lead screw is in screw fit with the slider, and the support is fixedly connected to a servo motor driving the lead screw to rotate.
Through adopting above-mentioned technical scheme, servo motor control lead screw rotates, and the lead screw drives the slider motion, under locating part restriction gate pivoted effect, when realizing gate reciprocating motion, and then the flow that control mud enters into the mud groove.
Optionally, the limiting part is a sliding rod, one side of the gate, which is far away from the sliding block, is sleeved with the sliding rod to slide, the sliding rod is fixedly connected with the support, and the sliding rod is arranged in parallel with the screw rod.
Through adopting above-mentioned technical scheme, the slide bar is used for restricting the gate rotation, and gate reciprocating motion along slide bar length direction.
The application still provides a pair of high-efficient pore-forming construction equipment of aquatic drilling bored concrete pile reverse circulation adopts following technical scheme:
the utility model provides an aquatic drilling bored concrete pile reverse circulation high efficiency pore-forming construction equipment, including set up in the filter equipment that sedimentation tank entrance set up, filter equipment include with sedimentation tank fixed connection cross the filter frame and with cross the removable filter screen that sets up of filter frame.
Through adopting above-mentioned technical scheme, mud is deposited in flowing into the sedimentation tank from the conveyer pipe, at first under the filtering action of filter screen, realizes filtering impurity in the mud, guarantees that mud composition is stable, and then guarantees the effect of adhesion drilling inner wall, promotes the pore-forming effect, also can guarantee construction safety.
Optionally, the equal fixedly connected with dead lever in filter screen both ends, cross filter frame fixedly connected with a plurality of with the threaded rod that the dead lever corresponds, the dead lever cover is established and is slided and is had the thread bush, the thread bush with threaded rod threaded connection, the thread bush with be provided with the joint subassembly between the dead lever.
Through adopting above-mentioned technical scheme, with dead lever and screw rod tip butt, thread bush and threaded rod threaded connection, under the effect of joint subassembly, realize fixed effect between threaded rod and the dead lever.
Optionally, the joint subassembly includes butt joint dish and joint ring, butt joint dish with the coaxial setting of dead lever tip, the joint ring with the thread bush is kept away from in the one end fixed connection of dead lever, the joint ring cover establish slide in outside the dead lever, butt joint dish with joint ring butt.
Through adopting above-mentioned technical scheme, under the effect of dragging of butt dish and joint ring and the screw thread effect of thread bush and threaded rod, realize the fixed effect between dead lever and the threaded rod.
Optionally, a stirring device is arranged in the mud pit, the stirring device comprises a stirring frame, a rotating disc rotatably connected with the stirring frame, a plurality of stirring rods rotatably connected with the rotating disc, and a plurality of stirring blades fixedly connected with the circumferential outer wall of the stirring rods, the stirring frame is provided with a transmission assembly for driving the stirring rods to rotate, and the stirring frame is fixedly connected with a stirring motor for driving the rotating disc to rotate.
Through adopting above-mentioned technical scheme, agitator motor drive rolling disc rotates, and the rolling disc drives a plurality of puddlers and takes place the revolution, simultaneously under drive assembly's effect, realizes the rotation of puddler, ensures the intensive mixing effect to mud in the mud pond.
Optionally, the transmission assembly includes internal gear and external gear, the external gear with the coaxial fixed connection of puddler, the internal gear with stirring frame fixed connection, just the teeth of a cogwheel of internal gear set up in the inner circle, the internal gear with a plurality of the external gear is all meshed and is connected.
Through adopting above-mentioned technical scheme, the rolling disc drives the puddler and rotates, under the relative motion effect of internal gear and external gear, realizes the drive effect to external gear, and then realizes the rotation effect of puddler.
Optionally, the rolling disc with the stirring frame rotates and is connected with the dwang, the stirring frame rotates and is connected with the pinion half, the pinion half with through belt drive between the dwang, the stirring frame slides and is provided with first rack and second rack, first rack and the second rack is located respectively the both sides of pinion half, first rack and the second rack passes through the reciprocating lever to be connected, reciprocating lever fixedly connected with is used for the spatula the scraper of sedimentation tank exit mud, the scraper moves along the horizontal direction.
Through adopting above-mentioned technical scheme, under belt and half gear effect, half gear revolve and with any meshing connection in first rack or the second rack, realize the drive effect to scraper reciprocating motion.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the mud is sucked into the drilling machine through the hollow drill rod from the inside of the drill hole, the mud is firstly conveyed into the sedimentation tank from the conveying pipe, after the mud is precipitated in the sedimentation tank, the mud enters the mud tank from the overflow port, the flow of the mud is controlled by the mud in the mud tank through the control gate, the mud enters the mud tank through the mud pipe, the mud in the mud tank enters the drill hole, and the water head in the steel casing breaks away from the mud surface control of the mud tank;
2. the fixed rod is abutted against the end part of the threaded rod, the threaded sleeve is in threaded connection with the threaded rod, and the fixing effect between the fixed rod and the threaded rod is realized under the dragging action of the abutting disc and the clamping ring and the threaded action of the threaded sleeve and the threaded rod;
3. under the effect of the belt and the half gear, the half gear rotates and is meshed with any one of the first rack or the second rack, and the driving effect of reciprocating movement of the scraper is achieved.
Drawings
FIG. 1 is a construction flow chart according to a first embodiment of the present application;
FIG. 2 is a schematic overall structure diagram of a first embodiment of the present application;
FIG. 3 is a schematic view of a mud pit, a sedimentation basin, a gate and a control device according to an embodiment of the present invention;
FIG. 4 is a schematic view of a filter device according to a second embodiment of the present application;
FIG. 5 is a partial cross-sectional view of a slurry tank, a sedimentation tank and a stirring device in the second embodiment of the present application;
fig. 6 is a schematic view of a stirring device, a scraper, a half gear, a first rack and a second rack in the second embodiment of the present application.
Reference numerals: 1. drilling a platform; 2. a steel casing; 3. a drilling machine; 4. steel pipe piles; 5. a gate; 6. a control device; 7. a mud pipe; 8. a mud pit; 9. a slurry tank; 10. a sedimentation tank; 11. a delivery pipe; 12. a support; 13. a slider; 14. a screw rod; 15. a servo motor; 16. a slide bar; 17. a filtration device; 18. a filter frame; 19. filtering with a screen; 20. fixing the rod; 21. a threaded rod; 22. a threaded sleeve; 23. a butting tray; 24. a snap ring; 25. a stirring device; 26. a stirring frame; 27. rotating the disc; 28. a stirring rod; 29. stirring blades; 30. a stirring motor; 31. an internal gear; 32. an outer gear; 33. rotating the rod; 34. a half gear; 35. a belt; 36. a first rack; 37. a second rack; 38. a reciprocating lever; 39. and (4) scraping the blade.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
Example one
The embodiment of the application discloses a reverse circulation efficient pore-forming construction method for an underwater cast-in-situ bored pile. Referring to fig. 1 and 2, the reverse circulation high-efficiency pore-forming construction method of the underwater cast-in-situ bored pile comprises the following steps,
s1, construction preparation, wherein a plurality of steel pipe piles 4 are driven into water, a drilling platform 1 is erected above the steel pipe piles 4, the whole drilling platform 1 is located above a horizontal plane, then a steel casing 2 is driven at a drilling position, a crane is used as lifting equipment, the steel casing 2 is driven in an inserting mode by matching with a vibration hammer, the steel casing 2 enters a bearing layer, the safety of the construction process is ensured, and a drilling machine 3 is arranged on the drilling platform 1 and located above the steel casing 2;
s2, manufacturing a mud pit 8, installing the mud pit 8 on the drilling platform 1, arranging an opening of the mud pit 8 below the mud pit 8, installing a gate 5 and a control device 6 for controlling the opening and closing of the gate 5 at the opening at the bottom of the mud pit 8, wherein the gate 5 is used for controlling the flow of mud;
referring to fig. 1 and 3, the control device 6 includes a support 12 fixedly connected to the mud pit 8, a slider 13 fixedly connected to the gate 5, a lead screw 14 rotatably connected to the support 12, and a limiting member for limiting rotation of the gate 5, the slider 13 is fixedly connected to a side wall of the gate 5, the lead screw 14 is vertically disposed, the limiting member is provided as a slide bar 16, the slide bar 16 is fixedly connected to the support 12, the slide bar 16 is parallel to the lead screw 14, one side of the gate 5 away from the slider 13 is slidably sleeved with the slide bar 16, the gate 5 is vertically provided with a slide hole in a penetrating manner, the slide bar 16 passes through the slide hole, and the support 12 is fixedly connected to a servo motor 15 for driving the lead screw 14 to rotate;
the servo motor 15 drives the screw rod 14 to rotate forwards or backwards, the screw rod 14 drives the sliding block 13 and the gate 5 to move, the rotation of the gate 5 is limited by the sliding rod 16, the gate 5 moves along the length direction of the sliding rod 16, the gate 5 is driven to reciprocate along the vertical direction, and the control effect on the inflow amount of slurry is realized along with the opening and closing of the gate 5.
S3, designing a mud pipe 7 and a mud groove 9, wherein the mud pipe 7 is connected with the bottom of a mud pool 8, the other end of the mud pipe 7 is connected with the mud groove 9 on the drilling platform 1, the mud groove 9 is downwards inclined by more than 1% along the direction towards the steel casing 2, the height of the mud groove 9 is positioned below the opening of the mud pipe 7, the lower part of the mud groove 9 is positioned above the steel casing 2, and mud can conveniently flow into a drill hole supported by the steel casing 2 from the inside of the mud groove 9; a screw machine for conveying the slurry is arranged in the slurry pipe 7, so that the slurry is conveniently conveyed;
s4, drilling, wherein the drilling machine 3 starts to drill, mud flows into the mud groove 9 from the mud pool 8 through the conveying action of the mud pipe 7, and the mud flows into the drill hole from the mud groove 9, so that the normal operation of the drilling work is ensured;
s5, the slurry reversely circulates and works, the slurry is sucked into the drilling machine 3 through the hollow drill rod from the drilling hole, a conveying pipe 11 used for conveying the hollow drill rod to suck the slurry is connected between a slurry outlet of the drilling machine 3 and the slurry tank 8 and used for conveying the slurry, the slurry is firstly conveyed into the sedimentation tank 10 from the conveying pipe 11, the sedimentation tank 10 is provided with an overflow port which is positioned above an opening of the slurry tank 8, after the slurry in the sedimentation tank 10 is settled, the slurry enters the slurry tank 8 from the overflow port, the slurry in the slurry tank 8 realizes the control of the slurry flow through the control gate 5, the slurry enters the slurry tank 9 through the slurry pipe 7, the slurry in the slurry tank 9 enters the drilling hole, a water head in the steel casing 2 is free from the control of the slurry surface of the slurry tank 8, the water head is higher, the hole is not easy to collapse, and the number of the steel casings 2 is not required to be increased. The method has the advantages of safe and reliable use, less investment, strong applicability and easy mastering of the technology by construction technicians.
Example two
The embodiment of the application also discloses a reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile. Referring to fig. 2 and 4, high-efficient pore-forming construction equipment of aquatic drilling bored concrete pile reverse loop is including setting up in the filter equipment 17 of sedimentation tank 10 entrance, because mud carries partial drilling detritus, for the convenience filter in to impurity in the mud, filter equipment 17 includes the filter frame 18 of crossing with sedimentation tank 10 fixed connection and with the removable filter screen 19 that sets up of filter frame 18, filter screen 19 is located the entrance of sedimentation tank 10, and the size of filter screen 19 end face size awaiting meeting sedimentation tank 10 entrance, when conveyer pipe 11 carries mud to sedimentation tank 10 opening part, under filter action of filter screen 19, realize the filter effect to impurity in the mud.
Equal fixedly connected with dead lever 20 in filter screen 19 both ends, dead lever 20 sets up for the level, filter 18 two threaded rods 21 that correspond with dead lever 20 of fixedly connected with, threaded rod 21 also sets up for the level, 20 overcoat of dead lever is established and is slided threaded sleeve 22, threaded sleeve 22 and threaded rod 21 threaded connection, be provided with the joint subassembly between threaded sleeve 22 and the dead lever 20, the joint subassembly includes butt dish 23 and joint ring 24, butt dish 23 and the coaxial fixed of dead lever 20 tip, the one end fixed connection in dead lever 20 is kept away from to joint ring 24 and threaded sleeve 22, 24 covers of joint ring establish and slide outside dead lever 20, butt dish 23 and 24 butts of joint ring.
Threaded rod 21 terminal surface circle diameter is greater than 20 terminal surface circle diameters of dead lever, thread bush 22 pass behind the butt dish 23 with 21 threaded rod threaded connection, drive thread bush 22 rotates, thread bush 22 is along the axial motion of dead lever 20, thread bush 22 drives clamping ring 24 towards 23 direction motion of butt dish, when clamping ring 24 moves to the position with 23 butts of butt dish, under the threaded connection effect of butt dish 23 and 24 mutual dragging of clamping ring and thread bush 22 and threaded rod 21, realize the fixed effect between dead lever 20 and the threaded rod 21, also be convenient for dismantle filter screen 19 simultaneously.
Referring to fig. 5 and 6, in order to ensure the fluidity of the slurry in the slurry tank 8, a stirring device 25 is arranged in the slurry tank 8, the stirring device 25 includes a stirring frame 26 fixedly connected with the sedimentation tank 10, a rotating disc 27 rotatably connected with the stirring frame 26, four stirring rods 28 rotatably connected with the rotating disc 27 and a plurality of stirring blades 29 fixedly connected with the circumferential outer wall of the stirring rods 28, the rotating disc 27 is rotatably connected with the stirring frame 26 through a rotating rod 33, the rotating rod 33 is rotatably connected with the stirring frame 26 through a shaft sleeve, the rotating rod 33 is fixedly connected with the rotating disc 27, the four stirring rods 28 are equidistantly distributed on the end surface of the rotating disc 27, the stirring rods 28 are also rotatably connected with the rotating disc 27 through a shaft sleeve, a stirring motor 30 for driving the rotating disc 27 is fixedly connected with the stirring frame 26, and the output end of the stirring motor 30 is fixedly connected with the top end of the rotating rod 33.
The stirring frame 26 is provided with a transmission assembly for driving the stirring rod 28 to rotate, the transmission assembly comprises an inner gear 31 and outer gears 32, the outer gears 32 are coaxially fixed with the stirring rod 28, the inner gear 31 is fixedly connected with the stirring frame 26, the gear teeth of the inner gear 31 are arranged on the inner ring, the four outer gears 32 are all positioned in the inner gear 31, and the four outer gears 32 are all meshed with the inner gear 31;
the stirring motor 30 drives the rotating rod 33 to rotate, the rotating disc 27 drives the four stirring rods 28 to revolve, the four stirring rods 28 drive the outer gear 32 to rotate in the rotating process, the inner gear 31 and the outer gear 32 move relatively, the inner gear 31 drives the outer gear 32 to rotate, at the moment, the stirring rods 28 rotate, and under the effect of full stirring of the stirring blades 29, the fluidity of slurry in the slurry tank 8 is guaranteed.
Referring to fig. 5 and 6, in order to reduce the adhesion of slurry at the outlet of the slurry tank 8, the stirring frame 26 is rotatably connected with a half gear 34, the half gear 34 is rotatably connected with the stirring frame 26 through a round bar, the round bar is also rotatably connected with the stirring frame 26 through a shaft sleeve, the round bar is coaxially fixed with the half gear 34, the round bar is rotated with the rotating bar 33 through a belt 35, the belt 35 is positioned above the settling tank 10, the axis of the half gear 34 is vertically arranged, the number of teeth of the half gear 34 is less than one circle and greater than one half circle, the stirring frame 26 is fixedly connected with two sliding sleeves, a first rack 36 and a second rack 37 are respectively slidably connected in the two sliding sleeves, the first rack 36 and the second rack 37 are symmetrically arranged relative to the symmetric plane of the half gear 34, a reciprocating bar 38 is fixedly connected between one end of the first rack 36 and the corresponding end of the second rack 37, the reciprocating bar 38 is fixedly connected with a scraper 39 for scraping slurry at the outlet of the settling tank 10, the scraper 39 is vertically disposed and moves in a horizontal direction.
The half gear 34 is meshed with the first rack 36 and the second rack 37, the half gear 34 is meshed with only one of the first rack 36 or the second rack 37 in the rotating process, the half gear 34 is driven under the action of friction force between the belt 35 and the round bar, when the half gear 34 is meshed with the first rack 36, the scraper 39 moves towards the outlet of the mud tank 8, when the scraper 39 moves from one side of the outlet of the sedimentation tank 10 to the other side, the half gear 34 is just meshed with the second rack 37, and the reciprocating motion of the scraper 39 is realized along with the continuous rotation of the half gear 34; under the actions of the reciprocating scraper of the scraper 39 and the rotation and revolution of the stirring rod 28, the mud is ensured to normally flow out from the outlet of the mud pit 8.
The implementation principle of the reverse-circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile is as follows: the fixed rod 20 is abutted against the end part of the threaded rod 21, the threaded sleeve 22 is in threaded connection with the threaded rod 21, and when the clamping ring 24 moves to be abutted against the abutting disc 23, the fixing effect of the filter screen 19 and the filter frame 18 is realized; when the slurry is pumped out by the hollow drill rod, the slurry enters the opening of the sedimentation tank 10 through the conveying pipe 11, and the filter screen 19 filters impurities in the slurry to ensure that the slurry in the sedimentation tank 10 is clean;
after sedimentation in the sedimentation tank 10, the sludge enters the slurry tank 8 through an overflow port, the stirring motor 30 drives the rotating rod 33 to rotate, the rotating disc 27 drives the stirring rod 28 to rotate, and meanwhile, under the action of relative motion of the outer gear 32 and the inner gear 31, the rotation and revolution effects of the stirring blades 29 are realized, and the sufficient stirring effect on the slurry is ensured; meanwhile, under the action of friction force between the belt 35 and the round bar, the driving effect of the half gear 34 is realized, the half gear 34 is meshed with the first rack 36 and then meshed with the second rack 37, the reciprocating motion of the scraper 39 is realized, and the fluidity of slurry in the slurry tank 8 is ensured;
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above 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. The reverse circulation efficient pore-forming construction method of the underwater cast-in-situ bored pile is characterized by comprising the following steps of: comprises the following steps of (a) carrying out,
construction preparation, namely, after the drilling platform (1) is erected, a steel casing (2) is arranged, and the drilling machine (3) is arranged above the steel casing (2);
manufacturing a mud pit (8), and installing a gate (5) and a control device (6) for controlling the opening and closing of the gate (5) at an opening at the bottom of mud;
the design of a mud pipe (7) and a mud groove (9), wherein the mud pipe (7) is connected with the bottom of a mud pool (8), the other end of the mud pipe (7) is connected with the mud groove (9), and the mud groove (9) is positioned above the steel casing (2);
drilling, wherein the drilling machine (3) starts to drill holes, and slurry enters the drilled holes after passing through a slurry groove (9) from a slurry pool (8);
the mud is subjected to reverse circulation work, and the mud is sucked from the drill hole through the hollow drill rod and then enters the mud tank (8) to realize the reverse circulation work;
before entering the mud tank (8), the mud firstly enters the sedimentation tank (10), and the mud in the sedimentation tank (10) overflows into the mud tank (8).
2. The reverse circulation efficient pore-forming construction method for the underwater cast-in-situ bored pile according to claim 1, characterized in that: a conveying pipe (11) for conveying the hollow drill rod to suck out slurry is connected between the slurry outlet of the drilling machine (3) and the sedimentation tank (10).
3. The reverse circulation efficient pore-forming construction method for the underwater cast-in-situ bored pile according to claim 1, characterized in that: the control device (6) comprises a support (12) fixedly connected with the mud pit (8), a sliding block (13) fixedly connected with the gate (5), a screw rod (14) rotatably connected with the support (12) and a limiting piece limiting the rotation of the gate (5), the screw rod (14) is in spiral fit with the sliding block (13), and the support (12) is fixedly connected with a servo motor (15) driving the screw rod (14) to rotate.
4. The reverse circulation efficient pore-forming construction method for the underwater cast-in-situ bored pile according to claim 3, characterized in that: the limiting part is arranged as a sliding rod (16), one side of the sliding block (13) far away from the gate (5) is sleeved with the sliding rod (16) to slide, the sliding rod (16) is fixedly connected with the support (12), and the sliding rod (16) is arranged in parallel with the screw rod (14).
5. A reverse circulation efficient pore-forming construction device for an underwater cast-in-situ pile is applied to the reverse circulation efficient pore-forming construction method for the underwater cast-in-situ pile, which is characterized in that: including set up in filter equipment (17) that sedimentation tank (10) entrance set up, filter equipment (17) including with sedimentation tank (10) fixed connection filter frame (18) and with filter screen (19) that filter frame (18) removable setting.
6. The reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile according to claim 5, characterized in that: the equal fixedly connected with dead lever (20) in filter screen (19) both ends, cross filter frame (18) fixedly connected with a plurality of with threaded rod (21) that dead lever (20) correspond, dead lever (20) cover is established and is slided threaded sleeve (22), threaded sleeve (22) with threaded rod (21) threaded connection, threaded sleeve (22) with be provided with the joint subassembly between dead lever (20).
7. The reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile according to claim 6, characterized in that: the joint subassembly includes butt dish (23) and joint ring (24), butt dish (23) with dead lever (20) tip coaxial setting, joint ring (24) with thread bush (22) keep away from in the one end fixed connection of dead lever (20), joint ring (24) cover establish slide in outside dead lever (20), butt dish (23) with joint ring (24) butt.
8. The reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile according to claim 6, characterized in that: be provided with agitating unit (25) in mud pit (8), agitating unit (25) including stirring frame (26), with stirring frame (26) rotate rolling disc (27) of being connected, a plurality of with rolling disc (27) rotate puddler (28) of being connected and a plurality of with puddler (28) circumference outer wall fixed connection's stirring leaf (29), stirring frame (26) are provided with the drive the transmission assembly of puddler (28) rotation, stirring frame (26) fixedly connected with drive rotating disc (27) pivoted agitator motor (30).
9. The reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile according to claim 8, characterized in that: the transmission assembly comprises an inner gear (31) and an outer gear (32), the outer gear (32) is coaxially and fixedly connected with the stirring rod (28), the inner gear (31) is fixedly connected with the stirring frame (26), the gear teeth of the inner gear (31) are arranged on the inner ring, and the inner gear (31) is meshed with the outer gears (32) in a plurality.
10. The reverse circulation efficient pore-forming construction device for the underwater cast-in-situ bored pile according to claim 9, characterized in that: rolling disc (27) with stirring frame (26) rotates and is connected with dwang (33), stirring frame (26) rotates and is connected with half gear (34), half gear (34) with through belt (35) transmission between dwang (33), stirring frame (26) slides and is provided with first rack (36) and second rack (37), first rack (36) and second rack (37) are located respectively the both sides of half gear (34), first rack (36) and second rack (37) are connected through reciprocating lever (38), reciprocating lever (38) fixedly connected with is used for scraping shovel scraper (39) of sedimentation tank (10) exit mud, scraper (39) move along the horizontal direction.
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Application publication date: 20211001 |