CN221053622U - Concrete building pile foundation spiral drilling machine - Google Patents
Concrete building pile foundation spiral drilling machine Download PDFInfo
- Publication number
- CN221053622U CN221053622U CN202321727031.8U CN202321727031U CN221053622U CN 221053622 U CN221053622 U CN 221053622U CN 202321727031 U CN202321727031 U CN 202321727031U CN 221053622 U CN221053622 U CN 221053622U
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- spiral
- drilling
- pile foundation
- drill rod
- indentation
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- 238000005553 drilling Methods 0.000 title claims abstract description 92
- 238000007373 indentation Methods 0.000 claims abstract description 44
- 238000005056 compaction Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 abstract description 13
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 28
- 238000004049 embossing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a concrete building pile foundation spiral drilling machine, which comprises a spiral drill rod, wherein spiral blades are arranged on the spiral drill rod, a drilling compaction device is arranged on the spiral drill rod, indentation protrusions are arranged on the spiral blades at the lower part of the compaction device, and the indentation protrusions are used for pressing spiral grooves in drilled holes. In the drilling process, the compaction device is used for compacting, so that the inner wall of the drill hole is compacted. During the screw rod pulling-out process, the indentation bulge at the lower part presses or cuts a spiral groove on the inner wall of the compacted drill hole. The drilling with spiral groove gets into the spiral groove when pouring concrete, and then forms the spiral arch that gets into the spiral groove on the pile foundation, spiral groove and spiral bellied setting can improve the area of contact of pile foundation and drilling inner wall, improves the external diameter of pile foundation simultaneously, and then improves the joint strength of pile foundation and drilling.
Description
Technical Field
The utility model relates to the field of buildings, in particular to a building pile foundation preparation device for preparing building pile foundations in the initial stage of building.
Background
The building pile foundation is a supporting pile foundation formed by drilling holes on the ground and pouring concrete before construction. When drilling, generally, a spiral drilling machine is used for drilling to obtain a cylindrical drilling hole, and concrete is poured into the drilling hole after the drilling is completed to obtain a pile foundation. However, the connection strength between the pile foundation and the inner wall of the drilled hole is weak, in order to improve the strength of the pile foundation, the diameter of the pile foundation needs to meet certain requirements so as to improve the strength and stability of the pile foundation, and meanwhile, the connection strength between the pile foundation and the land where the pile foundation is located is improved.
Disclosure of utility model
The utility model aims to provide a concrete building pile foundation spiral drilling machine, which aims to solve the problems that: in the preparation process of the concrete building pile foundation, the connection strength between the pile foundation and the wall of the drilled hole is weak.
The utility model provides a concrete building pile foundation spiral drilling machine, which comprises a spiral drill rod, wherein spiral blades are arranged on the spiral drill rod, a drilling compaction device is arranged on the spiral drill rod, indentation protrusions are arranged on the spiral blades at the lower part of the compaction device, and the indentation protrusions are used for pressing spiral grooves in drilled holes.
Preferably, the indentation protrusions are serrated.
Preferably, the number of the indentation protrusions is two.
Preferably, the borehole compaction device is arranged to: the spiral drill rod comprises an upper drilling section, a lower drilling section and a compaction section between the upper drilling section and the lower drilling section, wherein the spiral blade is divided into an upper spiral blade and a lower spiral blade, the upper drilling section and the lower drilling section are respectively provided with the upper spiral blade and the lower spiral blade, and the rotation directions of the upper spiral blade and the lower spiral blade are opposite.
Still preferably, the helical blade is formed by sequentially and spirally arranging a plurality of tooth-shaped bulges, and gaps are reserved among the tooth-shaped bulges.
Still preferably, the tooth-shaped protrusion is trapezoidal or rectangular.
Still preferably, the length of the upper drilling section is 1/3 to 1/5 of the length of the lower drilling section.
Compared with the prior art, the concrete building pile foundation spiral drilling machine provided by the utility model has the following beneficial effects:
Above-mentioned concrete building pile foundation auger boring machine, when specifically using, acquire the drilling through the auger stem, in the drilling process, compaction by compaction device, make the drilling inner wall tight. In the process of pulling out the spiral drill rod, the spiral drill rod rotates, and the indentation bulge at the lower part presses or cuts a spiral groove on the inner wall of the compacted drill hole, so that the drill hole with the spiral groove is obtained. Drilling with spiral groove is in the use, and concrete gets into the spiral groove when pouring the concrete, and then forms the spiral arch that gets into the spiral groove on the pile foundation, and spiral groove and spiral bellied setting can improve pile foundation and the area of contact of drilling inner wall, improves the external diameter of pile foundation simultaneously, and then improves the joint strength of pile foundation and drilling. Moreover, the obtained spiral groove does not influence the placement of the reinforcement cage at the bottom of the hole, and the placement of the reinforcement cage is not limited by the spiral groove.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
It is evident that the drawings in the following description are only some specific embodiments of the utility model and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic side view of a portion of a auger stem according to example 1 of the present utility model.
FIG. 2 is a schematic view in partial cross-section of the auger stem and borehole of example 1 of the present utility model.
FIG. 3 is a schematic view in partial cross-section of a borehole in example 1 of the present utility model.
In the accompanying drawings:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Drilling section | 4 | Lower helical blade |
| 2 | Upper helical blade | 5 | Compacting section |
| 3 | Drill section | 6 | Indentation protrusion |
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Example 1
The utility model provides a concrete building pile foundation spiral drilling machine, which comprises a spiral drill rod, wherein spiral blades are arranged on the spiral drill rod, a drilling compaction device is arranged on the spiral drill rod, indentation protrusions 6 are arranged on the spiral blades at the lower part of the compaction device, obviously, the indentation protrusions 6 extend outwards to exceed the diameters of the spiral drill rod and the spiral blades, and further spiral grooves are extruded or drawn out on the inner wall of a drilled hole when the spiral drill rod is spirally pulled out.
When the concrete building pile foundation spiral drilling machine is specifically used, drilling holes are obtained through the spiral drill rod, in the drilling process, compaction is carried out by the compaction device, so that the inner wall of the drilling holes is compact, the compaction device can be realized through the existing spiral drill rod, for example, the patent number is CN201610889554.0, and the patent name is a construction method of the variable-diameter spiral drill rod and the concrete pile; of course, the compaction effect of different spiral drilling machines on the drilling holes is different, such as spiral drilling machines for screwing out soil, most of the soil is screwed out, and the drilling holes are not compacted; the drill bit at the lower part of the spiral drilling machine is large in width, the drill rod part is free of spiral blades or small in width, at the moment, most of soil is adhered to the drill rod, the soil is not unscrewed or less of the unscrewed soil is required, the compactness of the drilled hole is high, and the drilled hole can be compacted; in addition, the compaction degree of the drilled holes is different from the compaction degree of the drilled holes with different soil properties, and the scheme provided by the embodiment can be used for drilling holes which can bear the pressing of the indentation bulges 6, and the arrangement of the compaction device on the spiral drill rod is not an essential technical feature of the utility model. During the process of pulling out the spiral drill rod, the spiral drill rod rotates, and the indentation bulge 6 positioned at the lower part presses or cuts out a spiral groove on the inner wall of the compacted drill hole, so that the drill hole with the spiral groove is obtained. Drilling with spiral groove is in the use, and concrete gets into the spiral groove when pouring the concrete, and then forms the spiral arch that gets into the spiral groove on the pile foundation, and spiral groove and spiral bellied setting can improve pile foundation and the area of contact of drilling inner wall, improves the external diameter of pile foundation simultaneously, and then improves the joint strength of pile foundation and drilling.
Specifically, in order to facilitate the indentation protrusion 6 to extrude or score the spiral groove, the indentation protrusion 6 has a saw tooth shape, and the saw tooth shape may be a triangle tooth shape, and of course, other shapes may also be used. The indentation protrusion 6 may also be a ball, of course, considering the difficulty of manufacture and the mechanical stability of the indentation protrusion 6, in particular use, or the design of the protrusion piece, the protrusion piece should have a certain thickness, and both sides should have slopes so that the indentation protrusion is pressed out of the spiral groove, instead of making a mechanical cut directly on the inner wall of the borehole.
Specifically, in this embodiment, in order to form the spiral groove with the double spiral structure, two indentation protrusions 6 are provided, it should be noted that it is obvious that the indentation protrusions 6 are designed one above the other, and the rising speed and the rotating speed of the spiral drill rod should avoid that the indentation protrusions 6 at the lower part and the indentation protrusions 6 at the upper part extrude the same spiral groove.
Of course, the two indentation protrusions 6 can be designed to extrude the same spiral groove, the indentation protrusion at the upper part extrudes or cuts out the screw thread when the drill rod is lifted and rotated, the indentation protrusion at the lower part extrudes or cuts out the screw thread again when the drill rod is lifted and rotated along the screw thread obtained by the indentation protrusion at the upper part, and the previous screw thread is extruded and repaired again, so that the finally formed spiral groove is more regular; the process is adjusted by adjusting the lifting speed of the spiral drill rod and adjusting the rotating speed of the spiral drill rod, so that two indentation bulges further form better threads in the same drawn thread. When two embossing work, the embossing bulges at the upper part extrude soil when the threads are scratched, one part of the soil is extruded onto the hole wall, one part of the soil is screwed out along with the lower spiral blade, the embossing bulges at the lower part extrude or scratch out and repair the threads scratched by the embossing bulges at the upper part of the drill bit when the spiral drill rod is lifted and the drill rod rotates, the embossing bulges at the lower part of the drill bit extrude for the second time to form the threads, and redundant soil still screws out upwards along the lower spiral blade. Meanwhile, when two indentation bulges extrude the same spiral groove, further design can be made: the height of the indentation bulge 6 positioned at the upper part is smaller than that of the indentation bulge 6 positioned at the lower part, at the moment, a shallower spiral groove is pressed out by the indentation bulge 6 positioned at the upper part, and then the indentation bulge 6 positioned at the lower part with a larger height value is used for carrying out secondary indentation on the spiral groove, so that the depth of the spiral groove is increased.
In a specific operation, in order to control the running track of the two indentation protrusions, the time for rotating the spiral drill rod for one circle and the height for lifting the drill rod in the same time are controlled, meanwhile, the distance between the two indentation protrusions is adapted, and finally, the superposition of the track of the two indentation protrusions is ensured, and a spiral groove is obtained.
In this embodiment, the two indentation protrusions are spaced 100 to 200 mm apart, and when concrete is poured, the auger stem is lifted and rotated at the same time, and the two indentation protrusions press the hole wall to form a helical groove on the compacted hole wall. When concrete is poured, the concrete flows into the extruded spiral groove simultaneously, so that an outgoing thread structure outside the pile body is formed, the diameter of the pile foundation is increased by the outgoing thread structure, the friction area between the pile body and soil is increased, and the friction bearing capacity of the pile is increased.
Specifically, in this embodiment, in the process of sinking the auger stem, the indentation protrusion 6 will leave a spiral groove in the borehole, and as the auger stem continues to sink, the borehole compacting device located on the upper portion will compact the spiral groove, and any compaction technique in the prior art may be adopted in the above borehole compacting device, and meanwhile, this embodiment also provides a novel compaction manner: the borehole compaction device is arranged as follows: the spiral drill rod comprises an upper drilling section 1, a lower drilling section 3 and a compaction section 5 between the upper drilling section 1 and the lower drilling section 3, wherein the spiral blades are divided into an upper spiral blade 2 and a lower spiral blade 4, the upper drilling section 1 and the lower drilling section 3 are respectively provided with the upper spiral blade 2 and the lower spiral blade 4 correspondingly, and the rotation directions of the upper spiral blade 2 and the lower spiral blade 4 are opposite; the above-mentioned drilling compaction device is formed by the upper drilling section 1, the lower drilling section 3, the compaction section 5, the upper helical blade 2, the lower helical blade 4 and the like together, or the compaction of the drilling is realized by the above-mentioned structure together.
When the device is particularly used, the lower drilling section 3 positioned at the lower part rotates out soil through the lower spiral blade 4 in the rotating process, and the rotated out soil flows upwards along a channel formed by the lower spiral blade 4; the upper helical blade 2 of the upper drilling section 1 and the lower helical blade 4 are opposite in rotation direction, soil moves downwards in a channel formed by the upper helical blade 2 in the rotation process of the upper drilling section 1, and the soil at the compaction section 5 between the upper helical blade 2 and the lower helical blade 4 receives downward pressure of the upper part and upward pressure of the lower part, so that the soil is extruded outwards, and a tighter drilling inner wall is formed on a drilling hole; along with the sinking of the drilling hole, the inner walls of the drilling holes with different heights are continuously extruded, so that the inner walls of the drilling holes are tightly formed.
Finally, it is additionally stated that, like conventional augers, the individual auger shafts are connected to form a drill rod assembly which rotates integrally with the drive of the auger and is movable downwardly or upwardly during rotation. An upper drilling section, a lower drilling section and a compacting section are arranged on one spiral drill rod, the upper drilling section and the lower drilling section are respectively provided with an upper spiral blade and a lower spiral blade, the rotation directions of the upper spiral blade and the lower spiral blade are opposite, such as a spiral conveying shaft in the utility model patent with the patent number of CN202221715740.X, and the patent name of a garbage truck dry and wet box material discharging device, when the spiral drill rod rotates clockwise or anticlockwise, the upper drilling section and the lower drilling section also rotate clockwise or anticlockwise at the same time, but the spiral directions of the spiral blades are inconsistent, so that the material conveying directions of the upper spiral blade and the lower spiral blade are opposite; in the actual use process, as shown in fig. 1, the rotation direction of the spiral drill rod should be opposite to that of the lower spiral blade, that is, the spiral drill rod should rotate anticlockwise, so that the lower spiral blade rotates out soil and the soil moves upwards along the channel of the lower spiral blade; when the spiral drill rod rotates anticlockwise, the upper spiral blade and the lower spiral blade have opposite rotation directions, so that the upper spiral blade inevitably moves soil downwards, the upwards moved soil and the downwards moved soil are converged in the compaction section, and the soil inevitably moves outwards due to downward pressure on the upper part and upward pressure on the lower part, namely is extruded towards the inner wall of the drill hole, so that the soil is continuously extruded into the inner wall of the drill hole, and the compactness of the inner wall is increased; along with the movement of the spiral drill rod, the corresponding positions of the compaction sections are continuously changed, so that the inner walls of the drill holes at different heights are compacted.
According to the concrete building pile foundation spiral drilling machine, soil is extruded in the channels formed among the spiral blades, and extrusion treatment is carried out on the inner wall of the drill hole at the compaction section 5, so that the inner wall of the drill hole can be more compact, the strength of the inner wall of the drill hole is improved, and the situation that the drill hole collapses is avoided. And the spiral drilling machine for the concrete building pile foundation extrudes the inner wall of the drill hole to finish the drilling process without other additional operations, thereby reducing the complexity of the operations.
Specifically, in order to avoid that the pressure of the upper helical blade 2 and the lower helical blade 4 is too high when mutually extruding soil, the helical blade is formed by sequentially and spirally arranging a plurality of tooth-shaped bulges, and gaps are reserved among the tooth-shaped bulges. When the flowing resistance of the soil is overlarge, the soil can reversely flow from the gaps of the tooth-shaped protrusions, so that the damage of the spiral blade or the overlarge rotating resistance of the spiral drill rod is avoided.
In this embodiment, the tooth-shaped protrusion is trapezoidal or rectangular, and it should be noted that, the trapezoid or rectangle is not a standard shape, and the tooth-shaped protrusion is a spiral blade located on the spiral drill rod, and the tooth-shaped protrusion is integrally trapezoidal or rectangular after being unfolded, but a certain radian is necessarily required to be present between the inner end and the outer end of the spiral drill rod, and is an arc edge.
Specifically, in this embodiment, experiments show that when the drilling section 1 is too long, the problem that the auger stem is not smooth in operation and soil cannot enter the drilling section 1 occurs easily, and therefore, the length of the drilling section 1 should be reduced, and therefore, this embodiment provides the following design: the length of the upper drilling section 1 is 2/3 to 1/5 of the length of the lower drilling section 3.
Of course, the above-mentioned embodiments are only preferred embodiments of the present utility model, and not limiting the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model and should be protected by the present utility model.
Claims (7)
1. The concrete building pile foundation spiral drilling machine comprises a spiral drill rod, wherein spiral blades are arranged on the spiral drill rod,
The lower part of the spiral blade is provided with an indentation bulge which is used for extruding a spiral groove in the drilled drilling hole;
The indentation bulge is a bulge sheet, and slopes are arranged on two sides of the bulge sheet.
2. The concrete building pile foundation auger according to claim 1, wherein,
The indentation bulges are in a saw-tooth shape.
3. The concrete building pile foundation auger according to claim 1, wherein,
The number of the indentation protrusions is two.
4. The concrete building pile foundation auger according to claim 1, wherein,
The spiral drill rod is provided with a drilling compaction device, and the indentation bulge is positioned at the lower part of the compaction device;
The borehole compaction device is arranged as follows: the spiral drill rod comprises an upper drilling section, a lower drilling section and a compaction section between the upper drilling section and the lower drilling section, wherein the spiral blade is divided into an upper spiral blade and a lower spiral blade, the upper drilling section and the lower drilling section are respectively provided with the upper spiral blade and the lower spiral blade, and the rotation directions of the upper spiral blade and the lower spiral blade are opposite.
5. The concrete building pile foundation auger according to claim 4, wherein,
The helical blade is formed by sequentially and spirally arranging a plurality of tooth-shaped protrusions, and gaps are reserved among the tooth-shaped protrusions.
6. The concrete building pile foundation auger according to claim 5, wherein,
The tooth-shaped protrusions are trapezoid or rectangular.
7. The concrete building pile foundation auger according to claim 4, wherein,
The length of the upper drilling section is 1/3 to 1/5 of the length of the lower drilling section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893973 | 2023-04-17 | ||
| CN2023208939737 | 2023-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221053622U true CN221053622U (en) | 2024-05-31 |
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ID=87869748
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310809162.9A Pending CN116717184A (en) | 2023-04-17 | 2023-07-04 | Concrete building pile foundation spiral drilling machine |
| CN202321727031.8U Active CN221053622U (en) | 2023-04-17 | 2023-07-04 | Concrete building pile foundation spiral drilling machine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310809162.9A Pending CN116717184A (en) | 2023-04-17 | 2023-07-04 | Concrete building pile foundation spiral drilling machine |
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| Country | Link |
|---|---|
| CN (2) | CN116717184A (en) |
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2023
- 2023-07-04 CN CN202310809162.9A patent/CN116717184A/en active Pending
- 2023-07-04 CN CN202321727031.8U patent/CN221053622U/en active Active
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| Publication number | Publication date |
|---|---|
| CN116717184A (en) | 2023-09-08 |
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