CN113153163A - Rectangular pile hole forming drill bit and hole forming method thereof - Google Patents
Rectangular pile hole forming drill bit and hole forming method thereof Download PDFInfo
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- CN113153163A CN113153163A CN202110372682.9A CN202110372682A CN113153163A CN 113153163 A CN113153163 A CN 113153163A CN 202110372682 A CN202110372682 A CN 202110372682A CN 113153163 A CN113153163 A CN 113153163A
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- 238000000034 method Methods 0.000 title claims description 10
- 238000009412 basement excavation Methods 0.000 claims abstract description 104
- 230000005540 biological transmission Effects 0.000 claims description 103
- 238000005553 drilling Methods 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 10
- 230000036346 tooth eruption Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 7
- 238000007790 scraping Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
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- Earth Drilling (AREA)
Abstract
The invention discloses a rectangular pile hole forming drill bit which comprises a T-shaped frame, a pair of first excavation components and a pair of second excavation components, wherein the pair of first excavation components are fixed at two ends of a short rod of the T-shaped frame, a long rod of the T-shaped frame is axially arranged along a square pile hole, the first excavation components are provided with a pair of rotary drill bits a, orthographic projections of the rotary drill bits a on a horizontal plane A are two rectangles a, the two rectangles a are both positioned in the square, a straight angle of the rectangle a is superposed with a straight angle of the square, a long edge of the rectangle a is superposed with a first side edge, the pair of second excavation components are connected with the T-shaped frame, the pair of second excavation components are symmetrically arranged at two sides of the T-shaped frame, the pair of second excavation components are arranged above the pair of first excavation components, and the second excavation components are provided with rotary drill bits b. The invention can improve the hole forming efficiency and the hole depth of the formed hole is easy to control.
Description
Technical Field
The invention relates to the technical field of pile foundations, in particular to a rectangular pile hole forming drill bit and a hole forming method thereof.
Background
In the existing pile foundation construction, a rotary drilling rig is generally adopted for construction of a circular pile hole, but the rotary drilling rig forms a square pile hole.
The patent that has now been disclosed is called "a device is dug soon to square pile who realizes square pore-forming", chinese utility model with publication number CN209457865U, this patent is earlier with dig the device and connect on the drilling rod soon, make main drill bit, vice drill bit, square scraping piece from up distributing down, when the construction, it drives main drill bit, vice drill bit rotates to rotate the drilling rod, keep square scraping piece not to rotate along with the drilling rod simultaneously, main drill bit contacts the rotatory pore-forming of soil body earlier, later vice drill bit also gets into the soil body and begins work, with the synthetic crossing round hole of round hole synthesis that main drill bit formed, then scrape the lateral wall of crossing round hole by square scraping piece, it is square stake hole to form the cross-section.
The pore-forming technology of above-mentioned patent digs the hole and repaiies the hole two steps, digs the polygon basic hole that the hole technology was dug out a similar quad slit soon, and the unnecessary soil body of polygonal hole pore wall is scraped to the square piece of scraping of reuse to repair into the square pile hole, however, the square pile hole pore-forming of above-mentioned patent needs two steps to take shape, and pore-forming efficiency is lower, and the soil body that the square piece of scraping hung down all falls to the bottom of the polygonal basic hole pore-forming in addition, and final pore-forming hole depth can't accurate control.
Disclosure of Invention
The invention aims to provide a rectangular pile hole forming drill bit which is designed aiming at the rectangular pile hole forming drill bit, can improve the hole forming efficiency and is easy to control the hole forming depth.
Another object of the present invention includes providing a rectangular pile hole forming method, which is designed for the rectangular pile hole forming method, can improve the hole forming efficiency, and the hole forming depth is easy to control.
The embodiment of the invention is realized by the following technical scheme:
a rectangular pile hole forming drill bit comprises a T-shaped frame, a pair of first excavation components and a pair of second excavation components, wherein the pair of first excavation components are fixed at two ends of a short rod of the T-shaped frame, a long rod of the T-shaped frame is axially arranged along a square pile hole, the orthographic projection of the square pile hole in a horizontal plane A is set to be square, the square comprises a pair of first side edges and a pair of second side edges, the first excavation component is provided with a pair of rotary drill bits a, the orthographic projection of the rotary drill bits a in the horizontal plane A is two rectangular a, the two rectangular a are both positioned in the square, a straight angle of the rectangular a is superposed with a straight angle of the square, a long edge of the rectangular a is superposed with the first side edge, the pair of second excavation components are connected with the T-shaped frame, the pair of second excavation components are symmetrically arranged at two sides of the T-shaped frame, and the pair of second excavation components are arranged above the pair of first excavation components, this second excavation subassembly disposes rotary drill bit b, and the orthographic projection of this rotary drill bit b in this horizontal plane A is rectangle b, and this rectangle b all is located this square, and the long limit of this rectangle b is on a parallel with this second side, and the length of this rectangle b is less than the length of this second side, and the length of this rectangle b is greater than the interval of this pair of first excavation subassembly.
In an embodiment of the present invention, the first excavation component is further configured with a connecting bridge, a transmission shaft, and a first hydraulic motor fixed to the T-shaped frame, the connecting bridge is fixed to the short rod of the T-shaped frame, two connecting bridges of the pair of first excavation components and the short rod of the T-shaped frame are in an i-shaped structure, the transmission shaft is disposed in the connecting bridge, the transmission shaft is connected to the output shaft of the first hydraulic motor through a gear pair, and two ends of the transmission shaft are respectively connected to the rotary drill bit a.
In an embodiment of the present invention, the transmission shaft includes a pair of driven transmission shafts, a pair of first telescopic hydraulic cylinders, and a driving transmission shaft, the pair of driven transmission shafts are respectively disposed at two ends of the driving transmission shaft, one end of the driven transmission shaft is connected to the rotary drill a, the other end of the driven transmission shaft is provided with a hollow section, the hollow section is sleeved on the driving transmission shaft, the driving transmission shaft is connected to an output shaft of the hydraulic motor through a gear pair, the driving transmission shaft is used for driving the driven transmission shaft to rotate, the pair of telescopic hydraulic cylinders are respectively disposed at two ends of the driving transmission shaft, the telescopic hydraulic cylinders are fixed to the driven rotation shaft, and piston shafts of the telescopic hydraulic cylinders are connected to the driving transmission shaft.
In an embodiment of the present invention, the inner wall of the hollow section is provided with a plurality of transmission key slots, the two ends of the driving transmission shaft are provided with a plurality of transmission keys, the plurality of transmission keys are circumferentially distributed in an array with the axis of the driving transmission shaft as a center, and the transmission keys are inserted into the transmission key slots.
In an embodiment of the present invention, the second excavation component is further configured with a transmission component, a second hydraulic motor, and a cantilever, one end of the cantilever is fixed to the T-shaped frame, the other end of the cantilever is rotatably connected to the rotary drill b, the transmission component is disposed in the cantilever, a power input end of the transmission component is connected to the second hydraulic motor, a power output end of the transmission component is connected to the rotary drill b, and the second hydraulic motor is fixed to the cantilever.
In an embodiment of the present invention, the cantilever includes a hollow fixed arm, a telescopic arm, and a second telescopic hydraulic cylinder, the hollow fixed arm is fixed to the T-shaped frame, one end of the telescopic arm is rotatably connected to the rotary drill b, the other end of the telescopic arm is inserted into the hollow fixed arm, the second telescopic hydraulic cylinder is fixed to the hollow fixed arm, a piston rod of the second telescopic hydraulic cylinder is connected to the telescopic arm, and the transmission assembly and the second hydraulic motor are both disposed in the telescopic arm.
In one embodiment of the present invention, the rotary drill bit a and the rotary drill bit b comprise a drum and a plurality of picks fixed on the surface of the drum.
The rectangular pile hole forming method includes the following steps,
step S1: drilling and digging a round lead hole by taking the size of the short side of the square pile hole as the diameter;
step S2: the long rod axis of the T-shaped frame is aligned to the circle center of the round guide hole, a pair of first excavation assemblies are used for excavating earth stones on two long sides of the square pile hole to form a long side hole wall of the square pile hole, and a pair of second excavation assemblies are used for excavating earth stones on two short sides of the square pile hole to form a short side hole wall of the square pile hole.
In an embodiment of the invention, after each downward excavation of the preset depth, the rotary drilling rig is used for emptying the soil and stones in the circular guide hole, and the downward excavation is continued after the circular guide hole is emptied.
In an embodiment of the invention, before the square pile hole is dug down, the distance between the pair of first excavation components and the distance between the pair of second excavation components are adjusted according to the length and width dimensions of the square pile hole.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
in the embodiment of the invention, the rectangular pile hole forming drill bit comprising the T-shaped frame, the pair of first excavation components and the pair of second excavation components is arranged, the pair of first excavation components are respectively fixed at two ends of the short rod of the T-shaped frame, the pair of second excavation components are connected with the long rod of the T-shaped rod, the pair of second excavation components are symmetrically arranged at two sides of the T-shaped rod, the pair of second excavation components are arranged above the pair of first excavation components, when the square pile hole is formed, the first excavation components contact soil stones before the second excavation components, the pair of first excavation components are used for excavating and forming two first side hole walls and four right angles of the square pile hole, and the pair of second excavation components are used for forming two second side hole walls of the square pile hole.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a top view of a rectangular pile hole forming drill bit of the present invention;
FIG. 2 is a schematic view of the structure of view A of FIG. 1;
FIG. 3 is a schematic view of a square pile hole and a horizontal plane A according to the present invention;
FIG. 4 is a projection view of the orthographic projection of the square pile hole and the circular guide hole to the horizontal plane A;
FIG. 5 is a perspective view of the forward projections of rotary drill bit a and rotary drill bit b onto horizontal plane A;
FIG. 6 is a top view of a rectangular pile hole forming drill bit of the present invention positioned in a square pile hole;
fig. 7 is a schematic structural view of a drive shaft of the first excavation component of the present invention;
FIG. 8 is a schematic structural view of a first hydraulic motor and a drive shaft of a first excavation component of the present disclosure;
FIG. 9 is a cross-sectional view of a driven drive shaft according to the present invention;
fig. 10 is a sectional view of the drive keys at both ends of the drive transmission shaft according to the present invention.
Icon: 1-T-shaped frame, 11-short rod, 111-third telescopic hydraulic cylinder, 12-long rod, 2-first excavation component, 21-rotary drill bit a, 22-connecting bridge, 23-transmission shaft, 24-first hydraulic motor, 25-driven transmission shaft, 251-transmission key groove, 26-driving transmission shaft, 261-transmission key, 27-first telescopic hydraulic cylinder, 3-second excavation component, 31-rotary drill bit b, 32-second hydraulic motor, 33-cantilever, 34-hollow fixed arm, 35-telescopic arm, 36-second telescopic hydraulic cylinder, 4-square pile hole, 5-circular guide hole, 6-horizontal plane A, 61-first side edge, 62-second side edge, 63-rectangular a, 64-rectangular b.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is merely for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "configured," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 10, a rectangular pile hole drilling bit includes a T-shaped frame 1, a pair of first excavation components 2 and a pair of second excavation components 3, the pair of first excavation components 2 are fixed at two ends of a short rod 11 of the T-shaped frame 1, a long rod 12 of the T-shaped frame 1 is axially disposed along a square pile hole 4, an orthographic projection of the square pile hole 4 in a horizontal plane a6 is formed as a square, the square includes a pair of first sides 61 and a pair of second sides 62, the first excavation component 2 is configured with a pair of rotary drill bits a21, an orthographic projection of the pair of rotary drill bits a21 in the horizontal plane a6 is formed as two rectangles a63, two rectangles a63 are both located in the square, a right angle of the rectangle a63 coincides with a right angle of the square, a long side of the rectangle a63 coincides with the first side 61, the pair of second excavation components 3 is connected with the T-shaped frame 1, and the pair of second excavation components 3 are symmetrically disposed at two sides of the T-shaped frame 1, the pair of second excavation components 3 are arranged above the pair of first excavation components 2, the second excavation component 3 is provided with a rotary drill bit b31, an orthographic projection of the rotary drill bit b31 in the horizontal plane a6 is a rectangle b64, the rectangles b64 are both located in the square, a long side of the rectangle b64 is parallel to the second side 62, the length of the rectangle b64 is smaller than that of the second side 62, and the length of the rectangle b64 is larger than the distance between the pair of first excavation components 2.
The orthographic projection of the square pile hole 4 in the horizontal plane a6 is a square, the square includes a pair of first sides 61 and a pair of second sides 62, the first sides 61 correspond to the first side walls of the square pile hole 4, and the second sides 62 correspond to the second side walls of the square pile hole 4.
It should be noted that, if the square pile hole 4 is the rectangular pile hole 4, the short side of the square pile hole 4 corresponds to the first side wall, and the long side of the square pile hole 4 corresponds to the second side wall, when the square pile hole 4 is constructed, a circular pile hole is dug by using a rotary drilling rig as a pilot hole, the length of the short side of the square pile hole 4 is the diameter of the pilot hole, that is, the inscribed circular pile hole of the square pile hole 4, but the inscribed circular pile hole is only tangent to two opposite sides of the square pile hole 4. If the square pile hole 4 is the square pile hole 4, the length of the first side wall and the length of the second side wall of the square pile hole 4 are equal, a guide hole is formed by rotary drilling with the length of the side of the square pile hole 4 as the diameter, namely, the inscribed circular pile hole of the square pile hole 4 is tangent to the four sides of the square pile hole 4.
In order to improve the hole forming efficiency and enable the hole forming depth to be easily controlled, the technical scheme is provided with a T-shaped frame 1, a pair of first excavation assemblies 2 and a pair of square pile hole 4 hole forming devices of a second excavation assembly 3, a long rod 12 of the T-shaped frame 1 has the same effect as a drill rod of a rotary drilling rig, the pair of first excavation assemblies 2 are respectively arranged at two ends of a short rod 11 of the T-shaped frame 1, each first excavation assembly 2 comprises a rotary drill bit a21, a connecting bridge 22, a transmission shaft 23 and a first hydraulic motor 24 fixed on the T-shaped frame 1, the rotary drill bit a21 is provided with a pair, the rotary drill bit a21 comprises a roller and a plurality of cutting teeth, and the plurality of cutting teeth are fixed on the surface of the roller. The connecting bridge 22 is a hollow tubular structure, the connecting bridge 22 is fixed to the short rod 11 of the T-shaped frame 1, two connecting bridges 22 of the pair of first excavation components 2 and the short rod 11 of the T-shaped frame 1 are in an i-shaped structure, the transmission shaft 23 is arranged in the connecting bridges 22, the transmission shaft 23 is connected to an output shaft of the first hydraulic motor 24 through a gear pair, the gear pair is a bevel gear pair, the first hydraulic motor 24 is communicated with an external hydraulic pump through a pipeline, two ends of the transmission shaft 23 are respectively connected to the rotary drill bits a21, that is, during construction, the first hydraulic motor 24 is started, the first hydraulic motor 24 drives the transmission shaft 23 to rotate through the bevel gear pair, and then the transmission shaft 23 drives the rotary drill bits a21 at two ends to rotate synchronously, for the pair of first excavation components 2, the two first excavation components 2 have four rotary drill bits a21 in total, and the four rotary drill bits a21 are respectively formed corresponding to four right-angled square pile holes 4, and the long sides of the two rotary drill bits a21 in the same first excavation component 2 correspond to the formation of the first side wall of the square pile hole 4.
It should be noted that, two first excavation assemblies 2 are used for forming two first side walls in the square pile hole 4, in order to make the hole forming device suitable for square pile holes 4 with different sizes, the technical scheme is to set the transmission shaft 23 to be a telescopic structure, specifically, the transmission shaft 23 comprises a pair of driven transmission shafts 25, a pair of first telescopic hydraulic cylinders 27 and a driving transmission shaft 26, the pair of driven transmission shafts 25 are respectively arranged at two ends of the driving transmission shaft 26, one end of the driven transmission shaft 25 is connected with the rotary drill bit a21, the other end of the driven transmission shaft 25 is provided with a hollow section which is sleeved on the driving transmission shaft 26, the inner wall of the hollow section is provided with a plurality of transmission key grooves 251, both ends of the driving transmission shaft 26 are provided with a plurality of transmission keys 261, the plurality of transmission keys 261 are circumferentially distributed in an array manner by taking the axis of the driving transmission shaft 26 as the center, and the transmission keys 261 are inserted into the transmission key grooves 251. The driving transmission shaft 26 is connected to an output shaft of the hydraulic motor through a gear pair, the driving transmission shaft 26 is used for driving the driven transmission shaft 25 to rotate, the pair of telescopic hydraulic cylinders are respectively arranged at two ends of the driving transmission shaft 26, the telescopic hydraulic cylinders are fixed on the driven rotation shaft, and piston shafts of the telescopic hydraulic cylinders are connected to the driving transmission shaft 26. The driving key 261 and the driving key groove 251 are arranged between the driving rotating shaft and the driven transmission shaft 25, so that transmission between the driving rotating shaft and the driven transmission shaft 25 can be realized, and relative movement between the driving rotating shaft and the driven transmission shaft 25 can also be realized, namely, the driven transmission shaft 25 extends or retracts, so that the length of the first side wall formed by the first excavation component 2 is increased or reduced, and the telescopic hydraulic cylinder is utilized to drive the driven transmission shaft 25 to move relative to the driving transmission shaft 26. During construction, the distance between the two first excavation assemblies 2 is adjusted according to the size of the short side of the square pile hole 4, and the distance between the two rotary drill bits a21 in the same first excavation assembly 2 is adjusted according to the size of the long side of the square pile hole 4.
It should be noted that, in order to make the pore-forming device be applicable to the square pile hole 4 of different sizes, the quarter butt 11 in the T type frame 1 also designs for the telescopic structure, concretely, the quarter butt 11 of T type frame 1 includes well hollow rod and a pair of telescopic link, peg graft respectively in the both ends of well hollow rod at this pair of telescopic link, be fixed with the flexible pneumatic cylinder 111 of third respectively at the both ends of this well hollow rod, the piston rod of the flexible pneumatic cylinder 111 of this third is fixed with the telescopic link, utilize the flexible pneumatic cylinder 111 of this third drive telescopic link to stretch out or indentation well hollow rod, utilize the telescopic link to realize adjusting the distance of first excavation group for 1 stock 12 of T type frame, just also realize adjusting the interval between two sets of first excavation subassemblies 2.
It should be noted that the telescopic hydraulic cylinder in this embodiment is a double-acting hydraulic cylinder, and the locking of the relative position between the driven transmission shaft 25 and the driving transmission shaft 26 is achieved by using the double-acting hydraulic cylinder.
In this embodiment, the second excavating component 3 includes a rotary drill b31, a transmission component, a second hydraulic motor 32 and a cantilever 33, the rotary drill b31 includes a drum and a plurality of picks fixed on the surface of the drum, the cantilever 33 is a cantilever 33 beam structure, one end of the cantilever 33 is fixed on the T-shaped frame 1, the other end of the cantilever 33 is rotatably connected with the rotary drill b31, for two second excavating components 3, two cantilevers 33 are symmetrically arranged on two sides of the T-shaped long rod 12, and the axis of the cantilever 33 is perpendicular to the second side wall, in order to realize the rotatable connection between the cantilever 33 and the rotary drill b31, a U-shaped structure is arranged at the free end of the cantilever 33, the rotary drill b31 is rotatably connected with the U-shaped structure through a rotating shaft, the transmission component is a prior art, the transmission component is arranged in the cantilever 33, the transmission component is composed of a transmission shaft 23 and a gear, the power input end of the transmission assembly is connected with the second hydraulic motor 32, the power output end of the transmission assembly is connected with the rotary drill bit b31, the second hydraulic motor 32 is fixed on the cantilever 33, two first side walls of the square pile hole 4 are formed by the two first excavation assemblies 2 during construction, the unearthed stones in the middle of the two first excavation assemblies 2 are excavated through the rotary drill bit b31 of the second excavation assembly 3, and dregs generated by excavation all fall into the pilot hole.
It should be noted that, in order to make the hole forming device be suitable for square pile holes 4 of different sizes, in this technical solution, the cantilever 33 is set to be a telescopic structure, specifically, the cantilever 33 includes a hollow fixed arm 34, a telescopic arm 35 and a second telescopic hydraulic cylinder 36, the hollow fixed arm 34 is fixed to the T-shaped frame 1, one end of the telescopic arm 35 is rotatably connected to the rotary drill b31, the other end of the telescopic arm 35 is inserted into the hollow fixed arm 34, the second telescopic hydraulic cylinder 36 is fixed to the hollow fixed arm 34, a piston rod of the second telescopic hydraulic cylinder 36 is connected to the telescopic arm 35, and the transmission assembly and the second hydraulic motor 32 are both disposed in the telescopic arm 35. In use, the distance between the two second excavation assemblies 3, namely the distance between the two rotary drill bits b31, is adjusted by the second telescopic hydraulic cylinders 36 according to the size of the long side of the square pile hole 4.
In the embodiment of the invention, by arranging the square pile hole 4 forming device comprising the T-shaped frame 1, the pair of first excavation components 2 and the pair of second excavation components 3, the pair of first excavation components 2 are respectively fixed at two ends of a short rod 11 of the T-shaped frame 1, the pair of second excavation components 3 are connected with a long rod 12 of the T-shaped rod, the pair of second excavation components 3 are symmetrically arranged at two sides of the T-shaped rod, the pair of second excavation components 3 are arranged above the pair of first excavation components 2, during the hole forming construction of the square pile hole 4, the first excavation component 2 contacts earth and stone before the second excavation component 3, the hole walls of two first sides 61 and four right angles of the square pile hole 4 are formed by utilizing the pair of first excavation components 2, the hole walls of two second sides 62 of the square pile hole 4 are formed by utilizing the pair of second excavation components 3, compared with the prior art, the technical scheme improves the hole forming efficiency, and the depth of the formed hole is easy to control.
A method for forming a hole in a square pile hole 4 comprises the following steps,
step S1: the short side size of the square pile hole 4 is used as the diameter, and a rotary drilling rig is used for drilling a round guide hole 5;
step S2: the long rod 12 axis of the T-shaped frame 1 is aligned to the circle center of the circular guide hole 5, a pair of first excavation assemblies 2 are used for excavating soil stones on two long side sides of the square pile hole 4 to form a long side hole wall of the square pile hole 4, and a pair of second excavation assemblies 3 are used for excavating soil stones on two short side sides of the square pile hole 4 to form a short side hole wall of the square pile hole 4. And after the preset depth is dug downwards, the rotary drilling rig is used for emptying the soil and stones in the circular guide hole 5, and the circular guide hole 5 is emptied and then the downward digging is continued.
When the square pile hole 4 with different sizes is constructed, the distance between the pair of first excavation components 2 and the distance between the pair of second excavation components 3 are adjusted according to the length and width of the square pile hole 4 before the square pile hole 4 is excavated.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rectangular pile hole forming drill bit is characterized in that,
comprises a T-shaped frame, a pair of first excavation components and a pair of second excavation components,
the pair of first excavation components are fixed at two ends of the short rod of the T-shaped frame, the long rod of the T-shaped frame is axially arranged along the square pile hole,
the orthographic projection of the square pile hole in the horizontal plane A is set to be square, the square comprises a pair of first side edges and a pair of second side edges,
the first excavation component is provided with a pair of rotary drill bits a, the orthographic projection of the rotary drill bits a on the horizontal plane A is two rectangles a, the two rectangles a are both positioned in the square, a right angle of the rectangle a is coincided with a right angle of the square, a long side of the rectangle a is coincided with the first side,
the pair of second excavation components are connected with the T-shaped frame, the pair of second excavation components are symmetrically arranged at two sides of the T-shaped frame, the pair of second excavation components are arranged above the pair of first excavation components,
this second excavation subassembly disposes rotary drill bit b, and the orthographic projection of this rotary drill bit b in this horizontal plane A is rectangle b, and this rectangle b all is located this square, and the long limit of this rectangle b is on a parallel with this second side, and the length of this rectangle b is less than the length of this second side, and the length of this rectangle b is greater than the interval of this pair of first excavation subassembly.
2. The rectangular pile hole boring bit of claim 1,
the first excavation component is also provided with a connecting bridge, a transmission shaft and a first hydraulic motor fixed on the T-shaped frame,
the connecting bridges are fixed on the short rods of the T-shaped frame, two connecting bridges in the pair of first excavation components and the short rods of the T-shaped frame are in an I-shaped structure,
the transmission shaft is arranged in the connecting bridge and is connected with the output shaft of the first hydraulic motor through a gear pair,
the two ends of the transmission shaft are respectively connected with the rotary drill bit a.
3. The rectangular pile hole boring bit of claim 2,
the transmission shaft comprises a pair of driven transmission shafts, a pair of first telescopic hydraulic cylinders and a driving transmission shaft,
the pair of driven transmission shafts are respectively arranged at two ends of the driving transmission shaft, one end of the driven transmission shaft is connected with the rotary drill bit a, the other end of the driven transmission shaft is provided with a hollow section which is sleeved on the driving transmission shaft,
the driving transmission shaft is connected with an output shaft of the hydraulic motor through a gear pair and is used for driving the driven transmission shaft to rotate,
the pair of telescopic hydraulic cylinders are respectively arranged at two ends of the driving transmission shaft, the telescopic hydraulic cylinders are fixed on the driven rotating shaft, and piston shafts of the telescopic hydraulic cylinders are connected with the driving transmission shaft.
4. The rectangular pile hole boring bit of claim 3,
the inner wall of the hollow section is provided with a plurality of transmission key slots,
a plurality of transmission keys are arranged at both ends of the driving transmission shaft,
the transmission keys are distributed in a circumferential array by taking the axis of the driving transmission shaft as a center, and the transmission keys are inserted into the transmission key grooves.
5. The rectangular pile hole boring bit of claim 1,
the second excavation component is also provided with a transmission component, a second hydraulic motor and a cantilever,
one end of the cantilever is fixed on the T-shaped frame, the other end of the cantilever is rotationally connected with the rotary drill bit b,
the transmission component is arranged in the cantilever, the power input end of the transmission component is connected with the second hydraulic motor, the power output end of the transmission component is connected with the rotary drill bit b,
the second hydraulic motor is fixed on the cantilever.
6. The rectangular pile hole boring bit of claim 5,
the cantilever comprises a hollow fixed arm, a telescopic arm and a second telescopic hydraulic cylinder,
the hollow fixed arm is fixed on the T-shaped frame,
one end of the telescopic arm is rotationally connected with the rotary drill bit b, the other end of the telescopic arm is inserted into the hollow fixed arm,
the second telescopic hydraulic cylinder is fixed on the hollow fixed arm, a piston rod of the second telescopic hydraulic cylinder is connected with the telescopic arm,
the transmission assembly and the second hydraulic motor are both arranged in the telescopic arm.
7. The rectangular pile hole boring bit according to any one of claims 1 to 6,
the rotary drill bit a and the rotary drill bit b comprise a roller and a plurality of cutting teeth, and the cutting teeth are fixed on the surface of the roller.
8. The rectangular pile hole forming method is characterized by comprising the following steps of,
step S1: drilling and digging a round lead hole by taking the size of the short side of the square pile hole as the diameter;
step S2: the long rod axis of the T-shaped frame is aligned to the circle center of the round guide hole, a pair of first excavation assemblies are used for excavating earth stones on two long sides of the square pile hole to form a long side hole wall of the square pile hole, and a pair of second excavation assemblies are used for excavating earth stones on two short sides of the square pile hole to form a short side hole wall of the square pile hole.
9. The rectangular pile hole forming method of claim 8,
and after each downward digging preset depth, emptying the soil and stones in the circular guide hole by using the rotary drilling rig, and continuing downward digging after emptying the circular guide hole.
10. The rectangular pile hole forming method of claim 8,
and before the square pile hole is dug downwards, adjusting the distance between the pair of first excavation components and the distance between the pair of second excavation components according to the length and width of the square pile hole.
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| CN202110372682.9A CN113153163B (en) | 2021-04-07 | 2021-04-07 | Rectangular pile hole forming drill bit and hole forming method thereof |
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| CN202110372682.9A CN113153163B (en) | 2021-04-07 | 2021-04-07 | Rectangular pile hole forming drill bit and hole forming method thereof |
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| CN116122723A (en) * | 2023-04-18 | 2023-05-16 | 中铁城建集团第一工程有限公司 | Soil material guiding device for milling square pile hole and use method thereof |
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|---|---|
| CN113153163B (en) | 2024-07-02 |
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Address after: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant before: Sichuan Communications Construction Group Co.,Ltd. |
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Effective date of registration: 20231018 Address after: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant after: Sichuan Communications Construction Group Co.,Ltd. Applicant after: Sichuan Jiaojian Urban Construction and Development Co.,Ltd. Address before: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant before: Sichuan Communications Construction Group Co.,Ltd. |
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