CN216110510U - Drilling equipment for large-diameter rock-socketed cast-in-place pile with ultra-thick covering layer - Google Patents
Drilling equipment for large-diameter rock-socketed cast-in-place pile with ultra-thick covering layer Download PDFInfo
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- CN216110510U CN216110510U CN202121680276.0U CN202121680276U CN216110510U CN 216110510 U CN216110510 U CN 216110510U CN 202121680276 U CN202121680276 U CN 202121680276U CN 216110510 U CN216110510 U CN 216110510U
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Abstract
The utility model relates to the technical field of an embedded rock filling pile, and discloses drilling equipment for a large-diameter embedded rock filling pile with an ultra-thick covering layer, which comprises a full-hydraulic reverse circulation drilling machine arranged on a construction site, wherein the full-hydraulic reverse circulation drilling machine comprises a machine base arranged on the construction site, a drill rod and a plurality of drill bits which are replaced and connected to the bottom of the drill rod and used for drilling different geological layers, a hydraulic frame for pressurizing the drill rod downwards is arranged on the machine base, a power element for driving the drill rod to rotate is arranged on the hydraulic frame, and the power element drives the drill rod to rotate to drive the drill bits to drill through the covering layer and drill into the geological layers to form pile holes; according to the geological formation of difference, can change different drill bits, can realize effectual drilling, and have the hydraulic pressure effect of pressurizeing, the drill bit is from radial, vertical two directions drilling to the stratum simultaneously, broken rock ability reinforce, the broken rock of the full section of stake hole creeps into, need not hierarchical reaming, and stake hole embedded rock section pore-forming speed is fast.
Description
Technical Field
The utility model relates to the technical field of cast-in-place piles, in particular to drilling equipment for a large-diameter cast-in-place pile with an ultra-thick covering layer.
Background
Along with the extension of urban building to the space, more and more high-rise, super high-rise building constantly appears, and its core section of thick bamboo adopts single stake single-column drilling bored concrete pile, shows as major diameter end-bearing pile in pile foundation design, and this type of pile diameter often exceeds 2000mm, and some pile diameters exceed 3000 mm. Under the influence of regional geology, end-bearing piles encountered by some pile foundation projects need to penetrate through an upper ultra-thick covering layer and are embedded into a rock stratum downwards, so that pile holes are ultra-deep, and the depth of the pile holes exceeds 100 m.
Among the prior art, dig the rig degree of automation soon and high, the pore-forming is fast and obtain the wide application, but to the drilling of major diameter's embedded rock bored concrete pile, because the drill bit need drill overburden and stratum, also need drill different geological stratification, like this, adopt solitary drill bit, then be difficult to realize the effect of effectively creeping into.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide drilling equipment for a large-diameter rock-socketed cast-in-place pile with an ultra-thick covering layer, and aims to solve the problem that effective drilling is difficult to achieve due to the fact that a single drill bit is adopted for drilling in the prior art.
The utility model is realized in this way, the ultra-thick overburden major diameter embedded rock filling pile drilling equipment includes a full hydraulic reverse circulation drilling machine arranged on the construction site, the full hydraulic reverse circulation drilling machine includes a machine base arranged on the construction site, a drill rod and a plurality of drill bits which are connected to the bottom of the drill rod in a replaceable manner and used for drilling different geological layers, the machine base is provided with a hydraulic frame for pressurizing the drill rod downwards, the hydraulic frame is provided with a power element for driving the drill rod to rotate, the power element drives the drill rod to rotate, and the drill bits are driven to drill through the overburden and drill into the rock layer to form pile holes.
Optionally, the hydraulic frame includes a longitudinal frame and a horizontal frame connected to the longitudinal frame and moving up and down along the longitudinal frame, the power element is connected to the horizontal frame, and when the drill bit drills, the horizontal frame drives the power element to move downward for applying pressure.
Optionally, a bottom steel plate is laid on the construction site, an upper steel plate is laid on the bottom steel plate, and the base is arranged on the upper steel plate.
Optionally, the edge of the bottom steel plate is provided with a plurality of tip pins which are inserted downwards into the construction site, and the plurality of tip pins are arranged around the periphery of the bottom steel plate at intervals.
Optionally, the edge of the bottom steel plate is provided with a plurality of upward convex edge convex blocks, the edge convex blocks are arranged around the periphery of the bottom steel plate at intervals, and the edge convex blocks are abutted to the edge of the upper steel plate.
Optionally, the upper steel plate is provided with a plurality of concave locations, the bottom of the machine base extends upwards to form a plurality of hydraulic feet, and the plurality of hydraulic feet are respectively embedded in the plurality of concave locations.
Optionally, the plurality of drill bits comprise single belt drill bits for drilling in soft soil layers and clay layers;
the single-waistband drill comprises a first central rod, a single first waist ring is arranged on the upper portion of the first central rod in a surrounding mode, a plurality of first toothed plates are arranged on the lower portion of the first central rod in a surrounding mode, and a plurality of guide plates are arranged in the middle of the first central rod in a surrounding mode;
the first toothed cutting plate is obliquely arranged upwards along the direction from bottom to top, a plurality of first cutting teeth are arranged at the bottom of the first toothed cutting plate, the outer end of the first toothed cutting plate and the periphery of the first waist ring are arranged in a vertically flush manner, and the guide plate is arranged between the first waist ring and the first toothed cutting plate;
the bottom of first well core rod is equipped with a plurality of first hang plates, the upper end of first hang plate is connected the bottom of first well core rod, and is a plurality of the upper end of first hang plate is along the periphery of first well core rod is encircleed and is arranged, and is a plurality of the lower extreme of first hang plate collects and connects, forms first pointed end, the bottom of first hang plate is equipped with first cutting tooth.
Optionally, the plurality of drill bits comprises a double belt drill bit for drilling in a layer of sand;
the double-waistband drill bit comprises a second central rod, two second waist rings are arranged on the upper portion of the second central rod in a surrounding mode, the two second waist rings are arranged at intervals up and down along the axial direction of the second central rod, and a plurality of second toothed cutting plates are arranged on the lower portion of the second central rod in a surrounding mode;
the second cutting tooth plate is obliquely arranged upwards along the direction from bottom to top, a plurality of second cutting teeth are arranged at the bottom of the second cutting tooth plate, and the outer end of the second cutting tooth plate and the periphery of the second waist ring are arranged in a vertically flush manner;
the bottom of the second center rod is provided with a plurality of second inclined plates, the upper ends of the second inclined plates are connected to the bottom of the second center rod, the upper ends of the second inclined plates are arranged along the periphery of the second center rod in a surrounding mode, the lower ends of the second inclined plates are connected in a gathering mode to form a second tip, and second cutting teeth are arranged at the bottom of the second inclined plates.
Optionally, a plurality of said drill bits comprise roller cutter drill bits for drilling into a formation;
the hobbing cutter drill bit comprises a drilling barrel body, a plurality of convex blocks are convexly arranged at the bottom of the drilling barrel body, a shaft rod is arranged on each convex block, a hobbing cutter head is sleeved outside each shaft rod, and a plurality of drilling cutters are arranged on the outer surface of each hobbing cutter head.
Optionally, the axial direction of the shaft rod is arranged in the same direction as the radial direction of the drill barrel.
Compared with the prior art, the drilling equipment for the large-diameter rock-socketed cast-in-place pile with the ultra-thick covering layer can replace different drill bits according to different geological layers in the process of drilling in the covering layer and rock stratum, can realize effective drilling, has the hydraulic pressurization effect of a full-hydraulic reverse circulation drilling machine, simultaneously drills the rock stratum from the radial direction and the vertical direction by the drill bits, has strong rock breaking capacity, performs rock breaking drilling on the full section of a pile hole, does not need grading hole expansion, and has high hole forming speed of a rock-socketed section of the pile hole; the drill bit is in the drilling process, and the vibration is little, and the noise is low, and is little to the surrounding environment influence, and green is effectual.
Drawings
FIG. 1 is a schematic front view of a single girdle drill bit according to the present invention;
FIG. 2 is a schematic front view of a double belt drill bit provided by the present invention;
FIG. 3 is a schematic front view of a roller cutter drill bit provided by the present invention;
FIG. 4 is a schematic front view of a hydraulic mount provided by the present invention;
FIG. 5 is a schematic front view of the bottom steel plate and the upper steel plate provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-5, preferred embodiments of the present invention are shown.
The drilling equipment for the large-diameter rock-socketed cast-in-place pile with the ultra-thick covering layer is suitable for the construction of cast-in-place piles with the diameter of 2000mm or more, suitable for the cast-in-place piles with the pile hole 100 covering stratum of which the thickness is more than 60m and more, suitable for the construction of hard rock-socketed piles with the pile end bearing layer with the strength of 60MPa or more and suitable for construction sites with strict requirements on noise.
The drilling equipment for the large-diameter embedded rock cast-in-place pile with the ultra-thick covering layer comprises a full-hydraulic reverse circulation drilling machine, wherein the full-hydraulic reverse circulation drilling machine comprises a machine base 700 arranged on a construction site, a drill rod 101 and a plurality of drill bits connected to the bottom of the drill rod 101 in a replaceable manner, and different drill bits can be replaced according to different geological layers in the drilling process.
The machine base 700 is provided with a hydraulic frame which downwards pressurizes the drill rod 101, the hydraulic frame is provided with a power element 703 which drives the drill rod 101 to rotate, a circulating hole which is communicated up and down is arranged in the drill rod 101, the drill bit is connected to the bottom of the drill rod 101, and the power element 703 drives the drill rod to rotate to drive the drill bit to drill through a covering layer and drill into a rock stratum to form a pile hole.
According to the drilling equipment for the large-diameter rock-socketed cast-in-place pile of the ultra-thick covering layer, in the process of drilling in the covering layer and the rock stratum, different drill bits can be replaced according to different geological layers, effective drilling can be achieved, the full-hydraulic reverse circulation drilling machine has a hydraulic pressurization effect, the drill bits drill the rock stratum from the radial direction and the vertical direction at the same time, the rock breaking capacity is strong, the 100 full-section rock breaking drilling of the pile hole is realized, grading reaming is not needed, and the hole forming speed of the 100 rock-socketed section of the pile hole is high; the drill bit is in the drilling process, and the vibration is little, and the noise is low, and is little to the surrounding environment influence, and green is effectual.
The hydraulic frame comprises a longitudinal frame 701 and a horizontal frame 702 which is connected to the longitudinal frame 701 and moves up and down along the longitudinal frame 701, a power element 703 is connected to the horizontal frame 702, and when a drill bit drills, the horizontal frame 702 drives the power element 703 to move downwards in a pressing mode. The horizontal frame 702 is utilized to drive the power element 703 to move downwards, and hydraulic pressure is applied, so that the drilling of the drill bit is smoother, and the drilling capability is stronger.
A bottom steel plate 800 is laid on the construction site, an upper steel plate 803 is laid on the bottom steel plate 800, and a base is arranged on the upper steel plate 803; the edge of the base steel plate 800 is provided with a plurality of tip pins 801 inserted downward in the construction site, and the plurality of tip pins 801 are arranged around the outer circumference of the base steel plate 800 at intervals. Thus, by utilizing the bottom supporting function of the bottom steel plate 800, the problem of sinking or dislocation of the full-hydraulic reverse circulation drilling machine can be solved in the drilling process.
The upper steel plate 803 is directly laid on the bottom steel plate 800, the position stability is better, and the bottom steel plate 800 is inserted into the construction site through the tip pins 801, so that the bottom steel plate 800 is more stable.
The edge of the bottom steel plate 800 is provided with a plurality of upwardly convex edge protrusions 802, the plurality of edge protrusions 802 are arranged around the periphery of the bottom steel plate 800 at intervals, and the edge protrusions 802 abut against the edge of the upper steel plate 803. Thus, the dislocation between the upper steel plate 803 and the bottom steel plate 800 can be avoided, so that the connection between the upper steel plate 803 and the bottom steel plate 800 is stable.
The upper steel plate 803 is recessed with a plurality of recessed locations 804, the bottom of the machine base 700 extends upward with a plurality of hydraulic feet, and the plurality of hydraulic feet are respectively embedded in the plurality of recessed locations 804. The base 700 can be stably arranged on the upper steel plate 803, and the phenomenon that the base inclines and runs during the drilling process is avoided.
Naturally, before a full-hydraulic reverse circulation drilling machine is used for drilling a pile hole, a pile casing is buried in a pile position of a covering layer; and (3) pouring concrete into the pile hole 100 through the pouring guide pipe 202 until the concrete reaches the top of the pile hole 100, pulling out the pouring guide pipe 202 before the concrete is initially set, and solidifying the concrete to form the rock-socketed cast-in-place pile.
The plurality of drill bits comprise single belt drill bits for drilling in soft soil layers and clay layers;
the single-waistband drill comprises a first central rod 300, wherein a single first waist ring 301 is encircled at the upper part of the first central rod 300, a plurality of first toothed plates 303 are encircled at the lower part of the first central rod 300, and a plurality of guide plates 302 are encircled at the middle part of the first central rod 300;
along the direction from bottom to top, the first truncated tooth plate 303 is obliquely arranged upwards, a plurality of first truncated teeth 304 are arranged at the bottom of the first truncated tooth plate 303, the outer end of the first truncated tooth plate 303 and the periphery of the first waist ring 301 are arranged in a vertically flush manner, and the guide plate 302 is arranged between the first waist ring 301 and the first truncated tooth plate 303;
the bottom of the first center rod 300 is provided with a plurality of first inclined plates 305, the upper ends of the first inclined plates 305 are connected to the bottom of the first center rod 300, the upper ends of the plurality of first inclined plates 305 are arranged around the periphery of the first center rod 300, the lower ends of the plurality of first inclined plates 305 are connected in a gathering manner to form a first tip end, and the bottom of the first inclined plates 305 is provided with first cutting teeth 306.
The single-belt drill bit is adopted for drilling, the rotation resistance is small, the slag gathering, slag discharging and cutting performances are good, and the drilling speed is high; the plurality of guide plates 302 effectively control the verticality during drilling.
The plurality of drill bits comprises a double girdle drill bit for drilling in a sand layer;
the double-waistband drill comprises a second central rod 400, wherein two second waist rings 401 are arranged at the upper part of the second central rod 400 in a surrounding manner, the two second waist rings 401 are arranged at intervals up and down along the axial direction of the second central rod 400, and a plurality of second toothed plates 403 are arranged at the lower part of the second central rod 400 in a surrounding manner;
along the direction from bottom to top, the second tooth cutting plate 403 is obliquely arranged upwards, a plurality of second cutting teeth 404 are arranged at the bottom of the second tooth cutting plate 403, and the outer end of the second tooth cutting plate 403 and the periphery of the second waist ring 401 are arranged in a vertically flush manner; the bottom of the second center rod 400 is provided with a plurality of second inclined plates 405, the upper ends of the second inclined plates 405 are connected to the bottom of the second center rod 400, the upper ends of the second inclined plates 405 are arranged around the periphery of the second center rod 400, the lower ends of the second inclined plates 405 are connected in a gathering manner to form a second tip, and the bottom of the second inclined plates 405 is provided with second cutting teeth 406.
When the drill bit drills in a sandy soil layer, the drill bit is easy to collapse and soften when meeting water, and in order to control drilling verticality, the drill bit with double belts is adopted for drilling.
A plurality of the drill bits comprise roller cutter drill bits for drilling into a formation;
the hob drill comprises a drill cylinder body 501, a plurality of convex blocks 502 are convexly arranged at the bottom of the drill cylinder body 501, a shaft rod is arranged on the convex blocks 502, the axial direction of the shaft rod is arranged in the same direction as the radial direction of the drill cylinder body 501, a hob head 503 is sleeved outside the shaft rod, and a plurality of drill cutters are arranged on the outer surface of the hob head 503;
when the hob head drills into the rock formation, the drill pipe 101 drives the drill barrel 501 to rotate, and the hob head 503 rotates around the shaft to cut the rock formation with the drill.
The rear end of the hob drill bit adopts an annular alloy steel counterweight with the diameter of the designed aperture, the front end of the hob drill bit is provided with a black alloy carbon steel alloy hob head 503, and the front end of the hob drill bit is provided with 8-12 hob heads 503; the number of the hob heads 503 is adjusted according to the compressive strength of the bedrock, and the number of the hob heads 503 takes a small value when drilling in a rock stratum with high compressive strength.
Rock stratum is continuously stripped from mother rock under the shearing and stretching actions of the hob to form uniform rock residues with the particle size of about 2cm, and slurry in the pumping reverse circulation hole cleaning process is carried and discharged out of the pile hole 100.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The drilling equipment for the large-diameter embedded rock cast-in-place pile with the ultra-thick covering layer is characterized by comprising a full-hydraulic reverse circulation drilling machine arranged on a construction site, wherein the full-hydraulic reverse circulation drilling machine comprises a machine base, a drill rod and a plurality of drill bits, the machine base is arranged on the construction site, the drill bits are connected to the bottom of the drill rod in a replaceable mode and used for drilling different geological layers, a hydraulic frame for pressurizing the drill rod downwards is arranged on the machine base, a power element for driving the drill rod to rotate is arranged on the hydraulic frame, the power element drives the drill rod to rotate, and the drill bits are driven to drill through the covering layer and drill into rock layers to form pile holes.
2. The apparatus for drilling an ultrathick overburden large diameter rock-socketed pile as recited in claim 1, wherein said hydraulic frame includes a longitudinal frame and a horizontal frame connected to and moving up and down along said longitudinal frame, said power element being connected to said horizontal frame, said horizontal frame moving said power element downward while said drill bit drills.
3. The apparatus for driving an extra-thick overburden large diameter cast-in-place pile as claimed in claim 1 or 2, wherein a bottom steel plate is laid on said construction site, an upper steel plate is laid on said bottom steel plate, and a base is placed on said upper steel plate.
4. An ultra-thick overburden large diameter rock-socketed pile drilling apparatus as recited in claim 3, wherein said base steel plate is provided at an edge thereof with a plurality of tip pins downwardly inserted into a construction site, said plurality of tip pins being arranged circumferentially at intervals along an outer periphery of the base steel plate.
5. The apparatus for driving an extra-thick overburden large diameter cast-in-place pile as recited in claim 3, wherein said bottom steel plate is provided at its edge with a plurality of upwardly projecting edge projections spaced around the periphery of the bottom steel plate, said edge projections abutting against the edge of said upper steel plate.
6. The apparatus for drilling an extra-thick overburden large diameter cast-in-place pile as claimed in claim 5, wherein said upper steel plate is recessed with a plurality of recessed locations, and said base has a bottom portion extending upward with a plurality of hydraulic legs, said plurality of hydraulic legs being correspondingly embedded in said plurality of recessed locations, respectively.
7. The apparatus for drilling an ultrathick overburden large diameter rock-socketed pile as claimed in claim 1 or 2, wherein a plurality of said drill bits include a single girdle drill bit for drilling in soft earth layers and clay layers;
the single-waistband drill comprises a first central rod, a single first waist ring is arranged on the upper portion of the first central rod in a surrounding mode, a plurality of first toothed plates are arranged on the lower portion of the first central rod in a surrounding mode, and a plurality of guide plates are arranged in the middle of the first central rod in a surrounding mode;
the first toothed cutting plate is obliquely arranged upwards along the direction from bottom to top, a plurality of first cutting teeth are arranged at the bottom of the first toothed cutting plate, the outer end of the first toothed cutting plate and the periphery of the first waist ring are arranged in a vertically flush manner, and the guide plate is arranged between the first waist ring and the first toothed cutting plate;
the bottom of first well core rod is equipped with a plurality of first hang plates, the upper end of first hang plate is connected the bottom of first well core rod, and is a plurality of the upper end of first hang plate is along the periphery of first well core rod is encircleed and is arranged, and is a plurality of the lower extreme of first hang plate collects and connects, forms first pointed end, the bottom of first hang plate is equipped with first cutting tooth.
8. The ultra-thick overburden large diameter rock-socketed cast-in-place pile drilling apparatus as claimed in claim 1 or 2, wherein a plurality of said drill bits comprise double girdle drill bits for drilling in a sand layer;
the double-waistband drill bit comprises a second central rod, two second waist rings are arranged on the upper portion of the second central rod in a surrounding mode, the two second waist rings are arranged at intervals up and down along the axial direction of the second central rod, and a plurality of second toothed cutting plates are arranged on the lower portion of the second central rod in a surrounding mode;
the second cutting tooth plate is obliquely arranged upwards along the direction from bottom to top, a plurality of second cutting teeth are arranged at the bottom of the second cutting tooth plate, and the outer end of the second cutting tooth plate and the periphery of the second waist ring are arranged in a vertically flush manner;
the bottom of the second center rod is provided with a plurality of second inclined plates, the upper ends of the second inclined plates are connected to the bottom of the second center rod, the upper ends of the second inclined plates are arranged along the periphery of the second center rod in a surrounding mode, the lower ends of the second inclined plates are connected in a gathering mode to form a second tip, and second cutting teeth are arranged at the bottom of the second inclined plates.
9. The ultra-thick overburden large diameter rock-socketed pile drilling apparatus as recited in claim 1 or 2, wherein a plurality of said drill bits comprise a roller cutter drill bit for drilling in a rock formation;
the hobbing cutter drill bit comprises a drilling barrel body, a plurality of convex blocks are convexly arranged at the bottom of the drilling barrel body, a shaft rod is arranged on each convex block, a hobbing cutter head is sleeved outside each shaft rod, and a plurality of drilling cutters are arranged on the outer surface of each hobbing cutter head.
10. An ultra-thick overburden large diameter rock-socketed pile drilling apparatus as recited in claim 9, wherein said shaft is disposed axially in the same direction as a radial direction of said drill pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121680276.0U CN216110510U (en) | 2021-07-22 | 2021-07-22 | Drilling equipment for large-diameter rock-socketed cast-in-place pile with ultra-thick covering layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121680276.0U CN216110510U (en) | 2021-07-22 | 2021-07-22 | Drilling equipment for large-diameter rock-socketed cast-in-place pile with ultra-thick covering layer |
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| Publication Number | Publication Date |
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| CN216110510U true CN216110510U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121680276.0U Active CN216110510U (en) | 2021-07-22 | 2021-07-22 | Drilling equipment for large-diameter rock-socketed cast-in-place pile with ultra-thick covering layer |
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| CN (1) | CN216110510U (en) |
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2021
- 2021-07-22 CN CN202121680276.0U patent/CN216110510U/en active Active
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