CN111021948A - Pile foundation combination equipment for rapid pore-forming of complex geology - Google Patents
Pile foundation combination equipment for rapid pore-forming of complex geology Download PDFInfo
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- CN111021948A CN111021948A CN201911396079.3A CN201911396079A CN111021948A CN 111021948 A CN111021948 A CN 111021948A CN 201911396079 A CN201911396079 A CN 201911396079A CN 111021948 A CN111021948 A CN 111021948A
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- pile foundation
- combination equipment
- drill bit
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- 238000005553 drilling Methods 0.000 claims abstract description 45
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 8
- 239000011435 rock Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- E21B6/00—Drives for drilling with combined rotary and percussive action
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- Engineering & Computer Science (AREA)
- 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 relates to the technical field of construction equipment of building foundation engineering, in particular to pile foundation combination equipment for quickly forming holes in complex geology, which comprises the following components: the barrel is formed by sequentially splicing a plurality of sections of protective barrels, and a fixed disk is fixedly arranged in the barrel; the connecting cylinder is arranged on the cylinder body and is rotationally connected with the cylinder body; the hydraulic vibration hammer is arranged at the top of the connecting cylinder; the rotary digging machine is used for driving the fixed disc to rotate; the drill bit is provided with a plurality ofly, and is a plurality of the drill bit sets up along barrel bottom circumference, and is a plurality of the diameter of drill bit at the circumscribed circle of the parallel projection of horizontal plane is greater than the external diameter of barrel. The invention has the advantages of reducing the side friction between the steel casing and the hole wall, improving the drilling efficiency and solving the problem of wall protection.
Description
Technical Field
The invention relates to the technical field of construction equipment of building foundation engineering, in particular to pile foundation combination equipment for rapid hole forming in complex geology.
Background
The cast-in-situ bored pile is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion or manual excavation and the like on an engineering site, placing a reinforcement cage in the pile hole and pouring concrete into the pile hole.
At present, when drilling is carried out on complex strata, such as strata containing miscellaneous fill, a sand-gravel layer, a boulder layer, boulder and the like, a common method is to adopt a steel protective cylinder and a pipe rolling machine to cooperate, firstly dig and take muck by a rotary digging machine, and then a pipe rolling machine drives the steel protective cylinder to follow at any time so as to prevent the hole wall or the hole opening from collapsing in the drilling process.
However, if the pile length is too long (for example, more than 40 meters), the depth of the drilled hole is correspondingly increased, so that the lateral friction resistance between the steel casing and the hole wall is too large in the downward drilling process of the steel casing, the pipe rolling machine cannot be rubbed, pipe clamping is easy to occur, the steel casing cannot be pulled out of the hole, and after the rock stratum is drilled through by the rotary drilling cylinder when the boulder is encountered, the steel casing can be removed only after secondary hole expansion by using the hole expanding drill bit, which is time-consuming and low in drilling efficiency.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides pile foundation combination equipment for quickly forming holes in complex geology, which has the advantages of reducing the side friction between a steel casing and a hole wall and improving the drilling efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a pile foundation combination equipment for complex geology quick pore-forming, it includes:
the barrel is formed by sequentially splicing a plurality of sections of protective barrels, and a fixed disk is fixedly arranged in the barrel;
the connecting cylinder is arranged on the cylinder body and is rotationally connected with the cylinder body;
the hydraulic vibration hammer is arranged at the top of the connecting cylinder;
the rotary digging machine is used for driving the fixed disc to rotate;
the drill bit is provided with a plurality ofly, and is a plurality of the drill bit sets up along barrel bottom circumference, and is a plurality of the diameter of drill bit at the circumscribed circle of the parallel projection of horizontal plane is greater than the external diameter of barrel.
Further, the diameter of an excircle of a parallel projection of the drill bits on a horizontal plane is 20-50mm larger than the outer diameter of the cylinder.
Furthermore, the inner wall and the outer wall of the lower end of the cylinder body are respectively provided with a reinforcing plate.
Further, two sections adjacent protecting barrels are connected through a plurality of groups of fixing assemblies, each group of fixing assemblies comprise a first clamping plate and a second clamping plate, one end of each fixing assembly is fixedly arranged on the inner wall and the outer wall of one section of protecting barrel, and a locking bolt penetrating through the second clamping plate, the other ends of the first clamping plate and the second clamping plate are respectively clamped on the inner wall and the outer wall of the adjacent protecting barrel, and the locking bolt penetrates through the side wall of the protecting barrel and is in threaded connection with the first clamping plate.
Furthermore, the fixed component further comprises a plurality of grooves formed in the end face of one section of the casing and a plurality of tenons fixedly arranged at the end part of the other section of the casing, the tenons correspond to the grooves one to one, and the tenons are in inserting fit with the grooves.
Further, the drill rod of the rotary drilling machine penetrates into the connecting cylinder from the top of the connecting cylinder, the fixed disc is provided with a clamping groove matched with a transmission shaft of the drill rod of the rotary drilling machine in a clamping mode, and the cross section of the clamping groove is non-circular.
Furthermore, a damping spring is arranged at one end, close to the fixed disc, of the drill rod of the rotary drilling machine.
Further, the joint cover of barrel and connecting cylinder is equipped with the clamp.
Further, the clamp includes vertical connecting plate and respectively with vertical connecting plate upper and lower end fixed connection's last hoop board and hoop board down, vertical connecting plate, last hoop board and hoop board down are the C type and are connected, barrel lateral wall circumference sets up first anticreep board, connecting cylinder lateral wall circumference sets up the second anticreep board, first anticreep board and second anticreep board are located between hoop board and the hoop board down.
Furthermore, a plurality of balls are arranged between the lower hoop plate and the first anti-falling plate.
The invention has the beneficial effects that:
the barrel body is formed by splicing a plurality of sections of protective barrels in sequence, so that the length of the barrel body can be adjusted according to the drilling depth, the purpose of adjusting the length of the barrel body can be realized by increasing or decreasing the number of the protective barrels, and the barrel body is suitable for drilling holes with different depths;
according to the invention, the plurality of drill bits are arranged along the circumferential direction of the bottom of the cylinder, and the diameter of an excircle of a parallel projection of the plurality of drill bits on a horizontal plane is larger than the outer diameter of the cylinder, so that the diameter of a hole drilled by the drill bits is larger than that of the cylinder, the friction force between the cylinder and the side wall of the hole is reduced, the cylinder can be conveniently and rapidly drilled downwards, and the drilling rate is improved;
when the device works, the hydraulic vibration hammer is started, the connecting cylinder is driven to vibrate by the hydraulic vibration hammer, the vibration force is transmitted to the drill bit from the cylinder through the connecting cylinder, rock soil is broken through the vibration of the drill bit, meanwhile, the rotary excavator is started, the fixed disc is driven to rotate through the drill rod of the rotary excavator, the cylinder and the drill bit are driven to rotate, the rock can be further ground when the cylinder and the drill bit rotate, the cylinder and the drill bit can quickly drill downwards under the action of double forces, the cylinder and the drill bit are compacted with sand soil through the vibration action of the hydraulic vibration hammer when a sand pebble layer is met, the aim of quickly drilling can be achieved, in addition, the drill bit and the cylinder can be squeezed away through the vibration and rotation actions when small pebbles are met, and the larger pebbles can be directly vibrated and broken.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a top view of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals: 10. a barrel; 11. protecting the cylinder; 12. fixing the disc; 13. a reinforcing plate; 14. a first anti-drop plate; 15. a card slot; 20. a connecting cylinder; 21. a second anti-drop plate; 30. a hydraulic vibratory hammer; 40. a drill stem; 41. a damping spring; 50. a drill bit; 60. a fixing assembly; 61. a first splint; 62. a second splint; 63. locking the bolt; 64. a groove; 65. a tenon; 70. clamping a hoop; 71. a vertical connecting plate; 72. an upper hoop plate; 73. a lower hoop plate; 74. and a ball.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
A pile foundation assembly for rapid drilling of complex geology, as shown in fig. 1-2, includes a barrel 10, a connector 20, two hydraulic vibratory hammers 30, a rotary excavator and a plurality of drill bits 50.
The cylinder 10 is formed by splicing a plurality of sections of protective cylinders 11 in sequence, so that the length of the cylinder 10 can be adjusted according to the drilling depth, the purpose of adjusting the length of the cylinder 10 can be realized by increasing or decreasing the number of the protective cylinders 11, and the cylinder 10 is suitable for drilling holes with different depths.
The fixed disk 12 is fixedly arranged in the cylinder 10, and the connecting cylinder 20 is arranged on the cylinder 10 and is rotationally connected with the cylinder 10. The hydraulic vibratory hammer 30 is provided on the top of the connecting cylinder 20. The rotary drilling machine is used for driving the fixed disc 12 to rotate.
Specifically, in this embodiment, connecting cylinder 20 and protecting cylinder 11 are the steel cylinder that the wall thickness is 20mm, and length is 3m, are favorable to improving the intensity and the antifriction performance of connecting cylinder 20 and protecting cylinder 11, make connecting cylinder 20 and protecting cylinder 11 be difficult for taking place deformation in drilling process, improve efficiency of construction and construction quality. The fixed disk 12 is a steel disk, the fixed disk 12 is welded and fixed with the inner wall of the cylinder 10, the strength of the steel disk and the welding and fixing mode is high, the bearing capacity of the fixed disk 12 is improved, and the phenomenon that the construction quality is affected due to deformation of the fixed disk 12 is avoided.
Specifically, in this embodiment, two fixtures of the hydraulic vibration hammer 30 are respectively clamped at the top of the connecting cylinder 20, and the two hydraulic vibration hammers 30 are symmetrically arranged at the top of the connecting cylinder 20, which is beneficial to making the two sides of the connecting cylinder 20 uniformly stressed, ensuring that the cylinder 10 and the drill bit 50 vertically drill downwards, and the drill rod 40 of the rotary drilling machine penetrates into the connecting cylinder 20 through the gap between the two hydraulic vibration hammers 30 and drives the fixed disc 12 to rotate.
The drill bits 50 are circumferentially arranged along the bottom of the barrel 10, the diameter D1 of an excircle of a parallel projection of the drill bits 50 on a horizontal plane is larger than the outer diameter D2 of the barrel 10, so that the diameter of a hole drilled by the drill bits 50 is larger than the diameter of the barrel 10, the friction force between the barrel 10 and the side wall of the hole is reduced, the barrel 10 can conveniently drill downwards quickly, and the drilling rate is improved.
During specific work, the hydraulic vibration hammer 30 is started, the connecting cylinder 20 is driven to vibrate through the hydraulic vibration hammer 30, vibration force is transmitted to the drill bit 50 from the cylinder 10 through the connecting cylinder 20, rock soil is broken through vibration of the drill bit 50, meanwhile, the rotary excavator is started, the fixing disc 12 is driven to rotate through the drill rod 40 of the rotary excavator, the cylinder 10 and the drill bit 50 are driven to rotate, the rock can be further ground when the cylinder 10 and the drill bit 50 rotate, the cylinder 10 and the drill bit 50 can quickly drill downwards under the action of double force, the cylinder 10 and the drill bit 50 are compacted with sandy soil through the vibration effect of the hydraulic vibration hammer 30 when a sand pebble layer is met, the aim of quick drilling can be achieved, in addition, the drill bit 50 and the cylinder 10 can be squeezed away through vibration and rotation effects when small pebbles are met, and the large pebbles can be directly vibrated and broken.
Furthermore, the diameter D1 of the circumscribed circle of the parallel projection of the plurality of drill bits 50 on the horizontal plane is 20-50mm larger than the outer diameter D2 of the cylinder 10, so that the diameter of the hole drilled by the drill bits 50 meets the construction requirement, the friction force between the hole wall and the cylinder 10 can be reduced, the service life of the cylinder 10 is prolonged, and the drilling rate is increased. Specifically, the width of the annular groove drilled by the plurality of drill bits 50 is 80-120 mm.
Further, the adjacent drill bits 50 are tightly attached to each other, so that when the drill bits 50 are used for drilling, stones cannot be clamped into gaps between the adjacent drill bits 50, the drill bits 50 are protected, and the service lives of the drill bits 50 are prolonged.
Further, in order to improve the strength of the lower end of the cylinder 10 and avoid the deformation of the lower end of the cylinder 10 during downward drilling, reinforcing plates 13 are welded to the inner wall and the outer wall of the lower end of the cylinder 10 respectively, and the reinforcing plates 13 are arranged along the circumferential direction of the inner wall and the outer wall of the cylinder 10. Specifically, the thickness of the reinforcing plate 13 is greater than or equal to 20 mm.
Further, as shown in fig. 3, two adjacent sections of pile casings 11 are connected by a plurality of sets of fixing assemblies 60, each set of fixing assemblies 60 includes a first clamping plate 61 and a second clamping plate 62, one ends of which are respectively welded to the inner and outer walls of one section of pile casing 11, and a locking bolt 63 penetrating through the second clamping plate 62, the other ends of the first clamping plate 61 and the second clamping plate 62 are respectively clamped to the inner and outer walls of the adjacent pile casing 11, and the locking bolt 63 penetrates through the side wall of the pile casing 11 and is in threaded connection with the first clamping plate 61.
In this embodiment, the first clamping plate 61 and the second clamping plate 62 are arranged at the bottom of the upper casing 11, the first clamping plate 61 and the second clamping plate 62 are respectively arranged along the circumferential direction of the inner wall and the outer wall of the casing 11, the first clamping plate 61 and the second clamping plate 62 extend out of the lower end surface of the casing 11 by 150mm, so that the first clamping plate 61 and the second clamping plate 62 can firmly clamp the side wall of the casing 11 below, the first clamping plate 61 is provided with a plurality of first connecting holes (not shown), the second clamping plate is provided with a plurality of second connecting holes (not shown) corresponding to the plurality of first connecting holes one by one, the locking bolt 63 is slidably connected with the second connecting hole, the locking bolt 63 is in threaded connection with the first connecting hole, and a third connecting hole (not marked in the figure) communicated with the first connecting hole and the second connecting hole is formed in the side wall of the lower adjacent casing 11. When the device is used specifically, the lower end part of the upper pile casing 11 is aligned with the upper end of the lower adjacent pile casing 11, the first clamping plate 61 and the second clamping plate 62 are used for respectively clamping the inner wall and the outer wall of the lower adjacent pile casing 11, the position of the upper pile casing 11 is adjusted to align the first connecting hole and the second connecting hole with the third connecting hole, then the locking bolt 63 is inserted into the third connecting hole from the second connecting hole, and the locking bolt 63 is further screwed into the first connecting hole, so that the upper pile casing 11 and the lower pile casing 11 are fixedly connected.
Further, the fixing component 60 further includes a plurality of grooves 64 provided on an end surface of one of the sections of casing 11 and a plurality of tenons 65 fixedly provided on an end portion of the other section of casing 11, the plurality of tenons 65 correspond to the plurality of grooves 64 one to one, and the tenons 65 are in insertion fit with the grooves 64. Specifically, the tenon 65 is arranged on the lower end face of the casing 11 located above, and the groove 64 is arranged on the upper end face of the casing 11 adjacent below, so that the tenon 65 can be conveniently inserted into the groove 64. Through setting up tenon 65 and recess 64, be more favorable to the transmission moment of torsion of protecting a section of thick bamboo 11 adjacent protecting a section of thick bamboo 11 below of top to protect a section of thick bamboo 11, stability when further improving barrel 10 and rotate.
Further, as shown in fig. 2, a clamp 70 is sleeved at the joint of the cylinder 10 and the connecting cylinder 20, so that the cylinder 10 can rotate while the cylinder 10 and the connecting cylinder 20 are connected.
Specifically, the hoop 70 includes a vertical connecting plate 71, and an upper hoop plate 72 and a lower hoop plate 73 which are respectively fixedly connected with the upper end and the lower end of the vertical connecting plate 71, and the vertical connecting plate 71, the upper hoop plate 72 and the lower hoop plate 73 are connected in a C-shaped manner. The lateral wall circumference of barrel 10 sets up first anticreep board 14, connecting cylinder 20 lateral wall circumference sets up second anticreep board 21, first anticreep board 14 and second anticreep board 21 are located between hoop 72 and the hoop 73 down, make connecting cylinder 20 and barrel 10 when extracting the drilling, connecting cylinder 20 and barrel 10 can not take place to break away from.
Further, in order to ensure that the casing 11 can rotate flexibly, a plurality of balls 74 are arranged between the lower hoop plate 73 and the first anti-falling plate 14, and the balls 74 are beneficial to reducing the friction force between the lower hoop plate 73 and the first anti-falling plate 14, so that the casing 11 can rotate flexibly, and the abrasion between the lower hoop plate 73 and the first anti-falling plate 14 can be reduced.
Further, in order to facilitate the disassembly and assembly of the rotary drilling machine, the fixed disc 12 is provided with a clamping groove 15 which is in clamping fit with a transmission shaft of a drill rod 40 of the rotary drilling machine, and the cross section of the clamping groove 15 is non-circular. During the use, insert the draw-in groove 15 of fixed disk 12 with the transmission shaft of the drilling rod 40 of machine of digging soon, can drive fixed disk 12 and barrel 10 synchronous rotation when making the transmission shaft of digging soon the machine drilling rod 40 rotate, joint complex connected mode is favorable to improving the dismouting efficiency of digging soon the machine, and then improves the efficiency of construction.
Further, in order to protect the drill rod 40 of the rotary drilling machine, a damping spring 41 is arranged at one end of the drill rod 40 of the rotary drilling machine, which is close to the fixed plate 12, so that hard collision between the drill rod 40 of the rotary drilling machine and the fixed plate 12 can be avoided, and the service life of the rotary drilling machine can be prolonged.
The working principle is as follows:
during specific work, the hydraulic vibration hammer 30 is started, the connecting cylinder 20 is driven to vibrate through the hydraulic vibration hammer 30, vibration force is transmitted to the drill bit 50 from the cylinder 10 through the connecting cylinder 20, rock soil is broken through vibration of the drill bit 50, meanwhile, the rotary excavator is started, the fixing disc 12 is driven to rotate through the drill rod 40 of the rotary excavator, the cylinder 10 and the drill bit 50 are driven to rotate, the rock can be further ground when the cylinder 10 and the drill bit 50 rotate, the cylinder 10 and the drill bit 50 can quickly drill downwards under the action of double force, the cylinder 10 and the drill bit 50 are compacted with sandy soil through the vibration effect of the hydraulic vibration hammer 30 when a sand pebble layer is met, the aim of quick drilling can be achieved, in addition, the drill bit 50 and the cylinder 10 can be squeezed away through vibration and rotation effects when small pebbles are met, and the large pebbles can be directly vibrated and broken.
The rotary drilling machine can accurately position and adjust the verticality. The selection of hydraulic vibratory hammer 30 and rotary excavator model parameters should be determined based on geological conditions and borehole diameter, depth, etc. And (3) after drilling a section of pile casing 11, detaching the connecting bolt of the pile casing 11 on the ground, then adding a section of pile casing 11, and continuing drilling until the designed pile length is reached. In order to reduce the friction force of the side wall, slurry can be prepared to be injected around the protective sleeve 11 to lubricate the slurry. After the protective barrel 11 reaches the bottom, the hydraulic vibration hammer 30 is taken down, the hoop 70, the connecting barrel 20 and the barrel body 10 are removed, the slag soil in the protective barrel 11 is grabbed out by a punching grab drill, and when a relatively complete and large rock core cannot be grabbed out by a grab bucket, the rock core is repeatedly impacted by the impact hammer to be crushed and then grabbed. After the dregs are dug, the reinforcement cage is put down and concrete is poured, the pile casing is upwards pulled out by the vibration of the hydraulic vibration hammer 30 which is installed on the top surface of the pile casing 11 again while pouring, until the pile casing 11 is completely pulled out, and the next pile can be driven in for construction after the pile is formed.
In conclusion, the equipment of the invention can be used for drilling very complicated stratum, and the drilling speed can be improved by more than 2 times. For example, the boulder can be driven to reach 0.3-0.4 m per hour by using a rotary digging machine, and the device can drive to reach more than 1 m per hour, which is about 3 times of the speed of the rotary digging machine. On the other hand, the device of the invention does not collapse the hole wall or the hole opening due to the advance support of the cylinder body 10 during drilling, so that the pouring amount of concrete can be reduced to the minimum, namely the filling coefficient is minimum, and the material cost is saved.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a pile foundation combination equipment for quick pore-forming of complicated geology which characterized in that: the method comprises the following steps:
the barrel is formed by sequentially splicing a plurality of sections of protective barrels, and a fixed disk is fixedly arranged in the barrel;
the connecting cylinder is arranged on the cylinder body and is rotationally connected with the cylinder body;
the hydraulic vibration hammer is arranged at the top of the connecting cylinder;
the rotary digging machine is used for driving the fixed disc to rotate;
the drill bit is provided with a plurality ofly, and is a plurality of the drill bit sets up along barrel bottom circumference, and is a plurality of the diameter of drill bit at the circumscribed circle of the parallel projection of horizontal plane is greater than the external diameter of barrel.
2. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: the diameter of an excircle of a parallel projection of the plurality of drill bits on a horizontal plane is 20-50mm larger than the outer diameter of the cylinder.
3. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: and the inner wall and the outer wall of the lower end of the cylinder body are respectively provided with a reinforcing plate.
4. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: two sections adjacent protect a section of thick bamboo and connect through multiunit fixed subassembly, every group fixed subassembly includes that one end is fixed respectively and locates first splint and the second splint of one of them section of thick bamboo inside and outside wall and run through the locking bolt of second splint, the other end of first splint and second splint presss from both sides respectively and locates the inside and outside wall of adjacent section of thick bamboo that protects, locking bolt passes and protects a section of thick bamboo lateral wall and first splint threaded connection.
5. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 4, characterized in that: the fixed component further comprises a plurality of grooves formed in the end face of one section of the pile casing and a plurality of tenons fixedly arranged at the end part of the other section of the pile casing, the tenons correspond to the grooves one to one, and the tenons are in plug-in fit with the grooves.
6. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: the drill rod of the rotary drilling machine penetrates into the connecting cylinder from the top of the connecting cylinder, the fixed disc is provided with a clamping groove matched with a transmission shaft of the drill rod of the rotary drilling machine in a clamping mode, and the cross section of the clamping groove is non-circular.
7. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: and a damping spring is arranged at one end, close to the fixed disc, of the drill rod of the rotary drilling machine.
8. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 1, characterized in that: the joint cover of barrel and connecting cylinder is equipped with the clamp.
9. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 8, characterized in that: the clamp includes vertical connecting plate and respectively with vertical connecting plate upper and lower end fixed connection's last hoop board and hoop board down, vertical connecting plate, last hoop board and hoop board down are the C type and are connected, barrel lateral wall circumference sets up first anticreep board, connecting cylinder lateral wall circumference sets up the second anticreep board, first anticreep board and second anticreep board are located between hoop board and the hoop board down.
10. The pile foundation combination equipment for the rapid hole forming of the complex geology according to claim 9, characterized in that: a plurality of balls are arranged between the lower hoop plate and the first anti-falling plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396079.3A CN111021948A (en) | 2019-12-30 | 2019-12-30 | Pile foundation combination equipment for rapid pore-forming of complex geology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396079.3A CN111021948A (en) | 2019-12-30 | 2019-12-30 | Pile foundation combination equipment for rapid pore-forming of complex geology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111021948A true CN111021948A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911396079.3A Pending CN111021948A (en) | 2019-12-30 | 2019-12-30 | Pile foundation combination equipment for rapid pore-forming of complex geology |
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| CN (1) | CN111021948A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111608586A (en) * | 2020-06-09 | 2020-09-01 | 东北岩土工程勘察总公司 | From dado type karst district pile foundation pore-forming equipment |
| CN111608586B (en) * | 2020-06-09 | 2024-05-10 | 东北岩土工程勘察总公司 | Pile foundation pore-forming equipment for self-protection wall type karst area |
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