LU505667B1 - Multifunctional device for branch pile construction and construction method thereof - Google Patents
Multifunctional device for branch pile construction and construction method thereof Download PDFInfo
- Publication number
- LU505667B1 LU505667B1 LU505667A LU505667A LU505667B1 LU 505667 B1 LU505667 B1 LU 505667B1 LU 505667 A LU505667 A LU 505667A LU 505667 A LU505667 A LU 505667A LU 505667 B1 LU505667 B1 LU 505667B1
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- rotating shaft
- cutting
- drilling
- central rotating
- cutterhead
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000005520 cutting process Methods 0.000 claims abstract description 138
- 238000005553 drilling Methods 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000002893 slag Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000000670 limiting effect Effects 0.000 claims description 58
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 11
- 239000002689 soil Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention discloses a multifunctional device for branch pile construction and a construction method thereof, including a central rotating shaft and a power rotating shaft arranged coaxially, wherein a rotary engaging mechanism is disposed between the central rotating shaft and the power rotating shaft for adjusting the relative position between the central rotating shaft and the power rotating shaft. A force transmission tube and a cutting cutterhead are fixed at the lower part of the power rotating shaft. A rotary cutting structure is disposed between the cutting cutterhead and the force transmission tube. The cutting cutterhead and the drilling cutterhead is driven to perform rotary drilling through the rotation of the power rotating shaft. When drilling to a designated position and diameter expansion is required, the relative position of the central rotating shaft and the power rotating shaft is adjusted through the rotary cutting structure, and under the action of the support rods pushing the cutting blades the cutting portions of the cutting blades are brought outward into an expanded state. Then, driven by the power rotating shaft, the cutting blades can perform rotational cutting and diameter expansion while rotating drilling. Moreover, by designing the central rotating shaft as a hollow shaft, the present invention can timely suck out the slag produced by drilling, thereby realizing the functions of drilling, expanding and cleaning while drilling.
Description
BL-5794
MULTIFUNCTIONAL DEVICE FOR BRANCH PILE CONSTRUCTION AND LU505667
CONSTRUCTION METHOD THEREOF
The present invention relates to the field of geotechnical engineering, in particular to a multifunctional device for branch pile construction and a construction method thereof.
Branch piles are a new type of pile foundation technology. By using a branch pile machine, the pile diameter of a certain pile foundation section is squeezed and enlarged in a suitable soil layer at the target elevation in the foundation soil, thereby forming a bored cast-in-situ pile with branch plates on its side wall, which can increase the bearing capacity of a single pile. Due to the multiple outwardly protruding support plates provided on the side walls of the pile foundation, the bearing capacity of a single pile is greatly improved, the pile diameter and pile length can be reduced, effectively saving costs and shortening the construction period. At present, this has become an advanced technology in foundation treatment of building construction and is widely used in many cities. However, as a new type of variable-section pile, the currently commonly used construction method is to use a drilling machine to form the hole and then use a special squeeze and expansion device for squeeze and expansion. Due to the sequence of process steps, the construction efficiency is low. Moreover, at the same construction site, the drilling disturbance or soil squeezing effect of adjacent pile foundations will have a serious impact on the pile quality of the branch piles. In addition, since the outward squeeze and expansion of the squeeze expander cannot be formed at one time, it is often necessary to perform multiple squeezes to achieve the target effect of branch plates. Moreover, due to the influence of soil strength, construction is difficult, which greatly limits the application range of branch piles in different foundations. However, 1
BL-5794 the rotary cutting method can be performed simultaneously with drilling, and the LU505667 diameter expansion effect can be achieved through one rotary cutting on the specified pile foundation section. Although there is currently equipment that integrate drilling and soil cleaning, the effect of diameter expansion cannot be achieved at the same time.
In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a multifunctional device for branch pile construction and a construction method thereof, which has the functions of drilling, rotary cutting, soil cleaning, etc. at the same time.
To achieve the above objects, the present invention provides the following technical solutions.
A multifunctional device for branch pile construction comprises a central rotating shaft and a power rotating shaft arranged coaxially, wherein the central rotating shaft is located inside the power rotating shaft, and a rotary engaging mechanism is disposed between the central rotating shaft and the power rotating shaft for adjusting the relative position between the central rotating shaft and the power rotating shaft; a force transmission tube and a cutting cutterhead are fixed at the lower part of the power rotating shaft, wherein a bottom of the force transmission tube is fixedly connected to a top of the cutting cutterhead, and a bottom surface area of the force transmission tube is smaller than a top surface area of the cutting cutterhead; a drilling cutterhead is installed on a bottom of the cutting cutterhead, and the cutting cutterhead further comprises a cylindrical portion and an inverted tapered portion, and the cylindrical portion and the inverted tapered portion are integrally formed; the drilling cutterhead is installed at a bottom of the inverted tapered portion. The central rotating shaft passes through the force transmission tube and the cutting cutterhead. The middle part of a bottom surface of the force transmission tube is recessed inward to form a receiving groove, and the lower part 2
BL-5794 of the force transmission tube is provided with a number of through grooved U505667 diverging along its radial direction, and the through grooves are connected to the receiving groove. A rotary cutting structure is disposed between the cutting cutterhead and the force transmission tube. The rotary cutting structure comprises a limiting turntable located inside the receiving groove and a number of cutting blades distributed on the circumferential side of a top surface of the cutting cutterhead.
Preferably, the number of the cutting blades is five, and the five cutting blades are evenly spaced. The limiting turntable is coaxially arranged with the central rotating shaft and is fixedly connected to the central rotating shaft. A number of support rods are rotatably connected to the outer circumferential side of the limiting turntable. The support rods pass through the through grooves, and the other ends of the support rods are rotatably connected to the middle part of the cutting blades, respectively.
The top surface of the cutting cutterhead is equipped with a number of limiting shafts located on the same circumference, and the limiting shafts correspond to the cutting blades one by one. Two ends of the cutting blades are a rotating portion and a cutting portion, respectively, and the rotating portion is rotationally connected with the limiting shaft. The function of the limiting shafts is to limit the rotating portions of the cutting blades. When the central rotating shaft and the power rotating shaft rotate relative to each other through the rotary engaging mechanism, the cutting portions of the cutting blades expand outward or retract inward under the action of the support rods, so that the cutting blades are brought into an unfolded state or a folded state.
As a preferred technical solution, the rotary engaging mechanism comprises a number of limiting blocks fixed on the upper circumferential side of the central rotating shaft and limiting grooves opened on the inner wall of a top of the power rotating shaft and corresponding to the limiting blocks. The limiting blocks comprise a horizontal portion and an engaging portion fixed at a bottom of the horizontal portion, respectively. The limiting grooves comprise an arc-shaped groove opened on the inner wall of a top of the power rotating shaft and a pair of limiting holes located on both sides of a bottom of the arc-shaped groove, respectively. The 3
BL-5794 limiting holes are a first position hole and a second position hole, respectively, and-U505667 the size of the limiting holes matches the size of the engaging portions. By positioning the engaging portions in the central rotating shaft in different limiting holes, the central rotating shaft and the power rotating shaft can be in different relative positions, thereby changing the degree of outward expansion of the cutting portions of the cutting blades. Further preferably, the central angle formed by the arc where the first position hole and the second position hole are located relative to the center of the limiting turntable is equal to the required rotation angle of the central rotating shaft when converting the cutting portions of the cutting blades from an inwardly retracted state to an outwardly expanded state. The design of these positions can accurately and efficiently adjust the position of the cutting blades, allowing the cutting blades to quickly switch between the unfolded state and the folded state.
As a preferred technical solution, the middle part of a bottom surface of the inverted tapered portion is recessed inward to form a cavity. The cavity can be used to temporarily store the slag generated during the drilling process. The central rotating shaft is designed as a hollow rotating shaft, wherein the interior of the central rotating shaft has a through-going slag discharge channel along its axis, which is connected to the cavity. During the drilling process, a circulating water pump system is connected to the cavity through the slag discharge channel. In this way, the slag can be sucked out and the slag cleaning effect can be achieved simultaneously during the drilling process.
Another object of the present invention is to provide a construction method of branch piles, using the multifunctional device for construction, comprising the following steps: (1) connecting the power rotating shaft to an external hydraulic power device first; (2) starting the hydraulic power device when drilling to drive the power rotating shaft to move, and then driving the cutting cutterhead at a bottom of the force transmission tube through the force transmission tube to perform rotary drilling; 4
BL-5794 (3) adjusting the relative position of the central rotating shaft and the powert-U505667 rotating shaft through the rotary cutting structure when drilling to a designated position and diameter expansion is required: applying a vertical upward force to the central rotating shaft first to move the central rotating shaft upward, wherein the moving displacement is greater than the depth of the limiting holes, so that the engaging portions can be pulled out from the first position holes; and then rotating the central rotating shaft clockwise to allow the engaging portions to enter the second position holes; during this process, the cutting blades can be brought into the unfolded state under the thrust of the support rods; (3) then the cutting blades performing rotational cutting and diameter expansion while rotating drilling driven by the power rotating shaft.
Existing branch piles mainly use the outward expansion posture of the squeeze expander to form branch plates. During the squeeze expansion process, small shoulders will be formed, which can easily lead to the collapse of the hole. Secondly, it takes at least 8 squeeze and expansion steps to form a branch plate. The construction efficiency is extremely slow. The squeeze and expansion are difficult, and the squeeze and expansion efficiency is low. In addition, when the squeeze expander encounters hard interlayers or relatively hard rock formations during the squeeze and expansion process, the squeeze and expansion are difficult, the construction time is relatively long, hole collapse is prone to occur, the construction quality is difficult to control, and the construction efficiency is low, which greatly limits the application range of branch piles. Even due to the particularity of the structure and the uneven soil quality, the shape of the branch plates formed by the squeeze and expansion device for existing branch piles is irregular. The main reason is that the squeeze and expansion device can only perform squeeze and expansion, and cannot modify the branch plates rotationally, resulting in uneven bearing capacity in all directions of a single branch plate. According to the present invention, by adding cutting blades to the drill body of the rotary drill, when the rotary drill reaches a designated position, the cutting blades are opened to perform rotational cutting. By cutting the soll rotationally, a high-efficiency pile foundation expansion process can
BL-5794 be achieved, and the cutting blades can be designed and replaced according td-U505667 different geological conditions, greatly broadening the application range of branch piles.
The conventional branch pile technology usually uses drilling machinery and equipment to form holes, and then places the squeeze and expansion device to perform squeeze and expansion. The disturbance or soil squeezing effect caused by the secondary construction during the expansion process has a greater impact on the adjacent pile foundations and seriously affects the quality of the newly formed cement pile body. According to the present invention, by adding a cutting cutterhead to the bored pile machine, the rotary cutting diameter expansion process can be simultaneously realized during drilling, thereby avoiding the impact of secondary construction and reducing the soil squeezing effect, and thus protecting the newly formed cement pile body. This avoids serious soil squeezing effects that lead to unsatisfactory pile quality and insufficient bearing capacity. Moreover, through rotational cutting, the limitations of the squeeze and expansion method on hard stratum conditions can be improved, greatly broadening the application range of branch piles.
At present, the actual engineering application effect of existing rotary drilling machines is poor. They cannot realize the integrated functions of drilling, rotary cutting and diameter expansion, and soil cleaning, and their automation efficiency is low. By adding a cutting cutterhead and a hollow rotating shaft to the drilling rig, the functions of drilling, expanding and cleaning can be realized, which greatly improves the construction efficiency and realizes automated process production, which is conducive to cost reduction and efficiency improvement, and has significant economic and environmental benefits.
The advantageous technical effects brought by the present invention are as follows.
The multifunctional device for branch pile construction according to the present invention drives the cutting cutterhead and the drilling cutterhead to perform rotary drilling through the rotation of the power rotating shaft. When drilling to a designated 6
BL-5794 position and diameter expansion is required, the relative position of the central U505667 rotating shaft and the power rotating shaft is adjusted by the rotary cutting structure.
Under the action of the support rods pushing the cutting blades, the cutting portions of the cutting blades are brought outward into an expanded state, so that the cutting blades reach an unfolded state. Then the cutting blades perform rotational cutting and diameter expansion while rotating drilling driven by the power rotating shaft. In addition, by designing the central rotating shaft as a hollow shaft, the present invention can timely suck out the slag produced by drilling through the circulating water pump system, thereby realizing the functions of drilling, expanding and cleaning while drilling.
Fig. 1 is a schematic structural diagram of a multifunctional device for branch pile construction according to the present invention;
Fig. 2 is a schematic structural diagram of the rotary cutting structure;
Fig. 3 is an enlarged view of part Ain Fig. 1;
Fig. 4 is a top view of the rotary cutting structure when the cutting blades are in the unfolded state;
Fig. 5 is a top view of the rotary cutting structure when the cutting blades are in the folded state;
Fig. 6 is a top view of the power rotating shaft, and
Fig. 7 is a top view of the central rotating shaft and the power rotating shaft when they cooperate under the action of the rotary engaging mechanism.
List of reference signs 1 central rotating shaft 2 power rotating shaft 7
BL-5794 3 rotary engaging mechanism LU505667 31 limiting block 311 horizontal portion 312 engaging portion 32 limiting groove 321 arc-shaped groove 322 first position hole 323 second position hole 4 force transmission tube cutting cutternead 51 cylindrical portion 52 inverted tapered portion 53 cavity 6 rotary cutting structure 61 limiting turntable 62 cutting blade 621 rotating portion 622 cutting portion 63 support rod 64 limiting shaft 7 drilling cutterhead 8 receiving groove 9 through groove 8
BL-5794
DETAILED DESCRIPTION LU505667
The present invention will be further described below with reference to the examples and drawings, so that those skilled in the art can better understand and implement the present invention, but the examples are not intended to limit the present invention.
It should be noted that in the present invention, "fixed", "connected", "installed", "fixed connection", etc. all mean that two components connected to each other are fixed together, usually by welding, screws, etc. "Rotational connection" etc. means that two parts are connected together and can move relative to each other. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, which are only intended to facilitate the description of the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. The "first" and "second" mentioned in the present invention do not represent the specific number or order, but are only used for the distinction of names.
Referring to Fig. 1, a multifunctional device for branch pile construction comprises a central rotating shaft 1 and a power rotating shaft 2 arranged coaxially.
The central rotating shaft 1 is located inside the power rotating shaft 2. A rotary engaging mechanism 3 capable of adjusting the relative position of the central rotating shaft 1 and the power rotating shaft 2 is disposed between the central rotating shaft 1 and the power rotating shaft 2. A force transmission tube 4 and a cutting cutterhead 5 are fixed at the lower part of the power rotating shaft. The bottom of the force transmission tube 4 is fixedly connected to the a of the cutting cutterhead 5, and a bottom surface area of the force transmission tube 4 is smaller than a top surface area of the cutting cutterhead 5. A drilling cutterhead 7 is installed 9
BL-5794 on a bottom of the cutting cutterhead 5. Further, the cutting cutterhead 5 comprised-U505667 a cylindrical portion 51 and an inverted tapered portion 52, and the cylindrical portion 51 and the inverted tapered portion 52 are integrally formed.
The drilling cutterhead 7 is installed at a bottom of the inverted tapered portion 52. The central rotating shaft 1 passes through the force transmission tube 4 and the cutting cutterhead 5. The middle part of a bottom surface of the force transmission tube 4 is recessed inward to form a receiving groove 8. The lower part of the force transmission tube is provided with a number of through grooves 9 diverging along its radial direction.
The through grooves 9 are connected to the receiving groove 8. A rotary cutting structure 6 is disposed between the cutting cutterhead 5 and the force transmission tube 4. Referring to Figs. 2 to 5, the rotary cutting structure 6 comprises a limiting turntable 61 located inside the receiving groove 8 and a number of cutting blades 62 distributed on the circumferential side of a top surface of the cutting cutterhead 5. Preferably, the number of the cutting blades 62 is five, and the five cutting blades are evenly spaced along the circumferential direction.
The limiting turntable 61 is coaxially arranged with the central rotating shaft 1 and is fixedly connected to the central rotating shaft.
A number of support rods 63 are rotatably connected to the outer circumferential side of the limiting turntable 61. The support rods 63 pass through the through grooves 9, and the other ends of the support rods 63 are rotatably connected to the middle part of the cutting blades, respectively.
A number of limiting shafts 64 located on the same circumference are installed on the top surface of the cutting cutternead 5. The limiting shafts 64 correspond to the cutting blade 62 one-to-one.
Two ends of a cutting blade 62 are a rotating portion 621 and a cutting portion 622, respectively, and the rotating portion 621 is rotationally connected to a limiting shaft 64. The function of the limiting shafts 64 are to limit the rotating portions of the cutting blades 62. When the central rotating shaft 1 and the power rotating shaft 2 rotate relative to each other through the rotary engaging mechanism 3, the cutting portions 622 of the cutting blades expand outward or retract inward under the joint limiting action of the support rods 63 and the limiting shafts 64, so that the cutting blades are brought into an unfolded state or a folded state (referring to Figs. 4 and 5).
BL-5794
Referring to Figs. 6 and 7, the rotary engaging mechanism 3 comprises d-U505667 number of limiting blocks 31 fixed on the upper circumferential side of the central rotating shaft 1 and limiting grooves 32 opened on the inner wall of a top of the power rotating shaft 2 and corresponding to the limiting blocks. The limiting blocks 31 comprise a horizontal portion 311 and an engaging portion 312 fixed at a bottom of the horizontal portion, respectively. The limiting grooves 32 comprise an arc-shaped groove 321 opened on the inner wall of the top of the power rotating shaft and a pair of limiting holes located on both sides of a bottom of the arc-shaped groove, respectively. The limiting holes are a first position hole 321 and a second position hole 322, respectively. The size of the limiting holes matches the size of the engaging portions. By positioning the engaging portions in the central rotating shaft in different limiting holes, the central rotating shaft and the power rotating shaft can be in different relative positions, thereby changing the degree of outward expansion of the cutting portions of the cutting blades. Further preferably, the central angle formed by the arc where the first position hole 322 and the second position hole 323 are located relative to the center of the limiting turntable is equal to the required rotation angle of the central rotating shaft when converting the cutting portions of the cutting blades from an inwardly retracted state to an outwardly expanded state. The design of these positions can accurately and efficiently adjust the position of the cutting blades, allowing the cutting blades to quickly switch between the unfolded state and the folded state.
Referring again to Fig. 1, as a preferred embodiment, the middle part of a bottom surface of the inverted tapered portion 52 is recessed inward to form a cavity 53. The cavity 53 can be used to temporarily store the slag generated during the drilling process. At the same time, the central rotating shaft 1 is designed as a hollow rotating shaft. The interior of the central rotating shaft has a through-going slag discharge channel along its axis, which is connected to the cavity. During the drilling process, a circulating water pump system is connected to the cavity through the slag discharge channel. In this way, the slag can be sucked out and the slag cleaning effect can be achieved simultaneously during the drilling process. 11
BL-5794
The construction method using the multifunctional device for branch pile-U505667 construction according to the present invention is as follows.
The power rotating shaft is driven to rotate by an external hydraulic power device. When drilling is required, the hydraulic power device is started to bring the power rotating shaft to move, and then rotary drilling is performed through the force transmission tube and the bottom cutterhead. When drilling to a designated position and diameter expansion is required, the relative position of the central rotating shaft and the power rotating shaft is adjusted by the rotary cutting structure. Under the action of the support rods pushing the cutting blades, the cutting portions of the cutting blades are brought outward into an expanded state, so that the cutting blades reach an unfolded state. Then, driven by the power rotating shaft, the cutting blades can perform rotational cutting and diameter expansion while rotating drilling.
The specific operations to adjust the relative position of the central rotating shaft and the power rotating shaft through the rotary cutting structure are as follows: When it is necessary to change the relative position of the central rotating shaft and the power rotating shaft, a vertical upward force is applied to the central rotating shaft to move the central rotating shaft upward a certain distance. The above-mentioned moving displacement only needs to be slightly larger than the depth of the limiting holes, so that the engaging portions can be pulled out from the first position holes, and then the central rotating shaft is rotated clockwise to allow the engaging portions to enter the second position holes. During this process, due to the relative position of the central rotating shaft and the power rotating shaft, the cutting blades can be brought into the unfolded state under the thrust of the support rods.
Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. 12
Claims (8)
1. A multifunctional device for branch pile construction, characterized in that the multifunctional device comprises a central rotating shaft and a power rotating shaft arranged coaxially, wherein the central rotating shaft is located inside the power rotating shaft, and a rotary engaging mechanism is disposed between the central rotating shaft and the power rotating shaft for adjusting the relative position between the central rotating shaft and the power rotating shaft; a force transmission tube and a cutting cutterhead are fixed at the lower part of the power rotating shaft, wherein a bottom of the force transmission tube is fixedly connected to a top of the cutting cutterhead, and a bottom surface area of the force transmission tube is smaller than a top surface area of the cutting cutterhead; a drilling cutterhead is installed at a bottom of the cutting cutterhead; the central rotating shaft passes through the middle of the force transmission tube and the cutting cutterhead; the middle part of a bottom surface of the force transmission tube is recessed inward to form a receiving groove, wherein the lower part of the force transmission tube is provided with a number of through grooves diverging along its radial direction, and the through grooves are connected with the receiving groove; a rotary cutting structure is disposed between the cutting cutterhead and the force transmission tube; the rotary cutting structure comprises a limiting turntable located inside the receiving groove and a number of cutting blades distributed on the circumferential side of a top surface of the cutting cutterhead; the limiting turntable is coaxially arranged with the central rotating shaft and is fixedly connected to the central rotating shaft; a number of support rods are rotatably connected to the outer circumferential side of the limiting turntable, wherein the support rods pass through the through grooves, and the other ends of the support rods are rotatably connected to the middle part of the cutting blades, respectively; the top surface of the cutting cutterhead is equipped with a number of limiting shafts located on the same circumference, and the limiting shafts correspond to the cutting blades one by one; two ends of the cutting blades are respectively a rotating portion and a cutting portion, and the rotating portion is rotationally connected with the limiting shaft. 13
BL-5794
2. The multifunctional device for branch pile construction according to claim 1 LU505667 characterized in that the rotary engaging mechanism comprises a number of limiting blocks fixed on the upper circumferential side of the central rotating shaft and limiting grooves opened on the inner wall of a top of the power rotating shaft and corresponding to the limiting blocks; the limiting blocks comprise a horizontal portion and an engaging portion fixed at a bottom of the horizontal portion, respectively; the limiting grooves comprise an arc-shaped groove opened on the inner wall of a top of the power rotating shaft and a pair of limiting holes located on both sides of a bottom of the arc-shaped groove, respectively, wherein the limiting holes are a first position hole and a second position hole, respectively, and the size of the limiting holes matches the size of the engaging portions.
3. The multifunctional device for branch pile construction according to claim 2, characterized in that a central angle formed by the arc where the first position hole and the second position hole are located relative to the center of the limiting turntable is equal to the required rotation angle of the central rotating shaft when converting the cutting portions of the cutting blades from an inwardly retracted state to an outwardly expanded state.
4. The multifunctional device for branch pile construction according to any one of claims 1 to 3, characterized in that the cutting cutterhead comprises a cylindrical portion and an inverted tapered portion, and the cylindrical portion and the inverted tapered portion are integrally formed, wherein the drilling cutterhead is installed at a bottom of the inverted tapered portion.
5. The multifunctional device for branch pile construction according to claim 4, characterized in that the number of the cutting blades is five, and the five cutting blades are evenly spaced.
6. The multifunctional device for branch pile construction according to claim 4, characterized in that the middle part of a bottom surface of the inverted tapered portion is recessed inward to form a cavity, the central rotating shaft is designed as a hollow rotating shaft, wherein the interior of the central rotating shaft has a through-going slag discharge channel along its axis, which is connected to the 14
BL-5794 cavity. LU505667
7. A construction method of branch piles, characterized in that using the multifunctional device according to any one of claims 1 to 6 for construction, comprising the following steps: connecting the power rotating shaft to an external hydraulic power device first; starting the hydraulic power device when drilling to drive the power rotating shaft to move, and then driving the cutting cutternead at a bottom of the force transmission tube through the force transmission tube to perform rotary drilling; adjusting the relative position of the central rotating shaft and the power rotating shaft through the rotary cutting structure when drilling to a designated position and diameter expansion is required, and bringing the cutting portions of the cutting blades outward into an expanded state under the action of the support rods pushing the cutting blades; then the cutting blades performing rotational cutting and diameter expansion while rotating drilling driven by the power rotating shaft.
8. The construction method according to claim 7, characterized in that the adjusting the relative position of the central rotating shaft and the power rotating shaft through the rotary engaging mechanism is specifically as follows: applying a vertical upward force to the central rotating shaft first to move the central rotating shaft upward, wherein the moving displacement is greater than the depth of the limiting holes, so that the engaging portions can be pulled out from the first position holes, and then rotating the central rotating shaft clockwise to allow the engaging portions to enter the second position holes; during this process, the cutting blades can be brought into an unfolded state under the thrust of the support rods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375315.9A CN114775598B (en) | 2022-04-11 | 2022-04-11 | Multifunctional device for supporting disc pile construction and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LU505667A1 LU505667A1 (en) | 2024-01-08 |
| LU505667B1 true LU505667B1 (en) | 2024-04-04 |
Family
ID=82428575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU505667A LU505667B1 (en) | 2022-04-11 | 2022-05-17 | Multifunctional device for branch pile construction and construction method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114775598B (en) |
| LU (1) | LU505667B1 (en) |
| WO (1) | WO2023197398A1 (en) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001020650A (en) * | 1999-07-02 | 2001-01-23 | Iwanami Consulting Kk | Method and device for drilling anchor hole |
| JP2003161091A (en) * | 2001-11-28 | 2003-06-06 | Chubu Electric Power Co Inc | Diameter-enlarging excavator |
| CN202055239U (en) * | 2011-04-12 | 2011-11-30 | 中国建筑第七工程局有限公司 | Extruding-expanding rotary cutting device for branch plate pile |
| CN104970707B (en) * | 2014-04-28 | 2018-03-16 | 嘉兴职业技术学院 | A kind of cake former |
| CN203789006U (en) * | 2014-04-28 | 2014-08-27 | 嘉兴职业技术学院 | Collaboration assembly on cake forming equipment |
| CN205117214U (en) * | 2015-10-25 | 2016-03-30 | 湖北中阔岩土机械化工程有限公司 | Rotary digging, jostling and enlarging drill |
| CN205100879U (en) * | 2015-10-25 | 2016-03-23 | 湖北中阔岩土机械化工程有限公司 | Crowded counterboring machine is dug soon to sickleleaf style |
| CN205907677U (en) * | 2016-05-27 | 2017-01-25 | 刘录怀 | Reaming stake and drilling tool thereof |
| CN106194034A (en) * | 2016-08-31 | 2016-12-07 | 中冶天工集团有限公司 | A kind of hydraulically adjustable drill bit device for the expanding pore-forming of pile foundation and construction method thereof |
| JP6691338B2 (en) * | 2017-07-06 | 2020-04-28 | 創伸産業株式会社 | Ground reinforcement casing |
| CN108086930B (en) * | 2018-01-29 | 2024-03-26 | 吉林大学 | Reverse circulation pipe following drilling tool for soft rock stratum and drilling process |
| CN111042738B (en) * | 2019-12-25 | 2024-04-09 | 长安大学 | Rotary cutting and expanding support disc pile machine and construction method of cutting and expanding support disc pile |
| CN211397459U (en) * | 2019-12-31 | 2020-09-01 | 江苏东合南岩土科技股份有限公司 | Expanding drill bit |
| CN111456638A (en) * | 2020-04-27 | 2020-07-28 | 中建一局集团建设发展有限公司 | Cutting drill bit for double-layer foundation rotary-expanding circular truncated cone pile construction and construction method |
| CN112049574A (en) * | 2020-09-28 | 2020-12-08 | 陕西百骏千驹建设工程有限公司 | Hole bottom expanding drill bit capable of being matched with rotary drilling rig for use |
-
2022
- 2022-04-11 CN CN202210375315.9A patent/CN114775598B/en active Active
- 2022-05-17 WO PCT/CN2022/093197 patent/WO2023197398A1/en unknown
- 2022-05-17 LU LU505667A patent/LU505667B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| LU505667A1 (en) | 2024-01-08 |
| WO2023197398A1 (en) | 2023-10-19 |
| CN114775598A (en) | 2022-07-22 |
| CN114775598B (en) | 2023-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20240404 |