CN115492109B - Drill bit set for pile cutter and use method - Google Patents
Drill bit set for pile cutter and use method Download PDFInfo
- Publication number
- CN115492109B CN115492109B CN202211286852.2A CN202211286852A CN115492109B CN 115492109 B CN115492109 B CN 115492109B CN 202211286852 A CN202211286852 A CN 202211286852A CN 115492109 B CN115492109 B CN 115492109B
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- drill bit
- plate
- pile
- limiting plate
- skin
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a drill bit group for a pile cutter and a use method thereof. The advantages are that: the problem that equipment replaces the manual work, and does not hurt the reinforcing bar is solved, broken stake operating efficiency has been guaranteed. The drill bit set adopts a structure with the adjustable skin breaking depth, so that the steel bar is protected while the skin breaking of the steel bar protection layer is realized, and the steel bar is prevented from being bent and broken. The depth of the drill bit entering the concrete pile is adjusted through the arrangement of the adjusting plate. The drill bit is provided with the crown plate, so that the concrete on the drill bit can be loosened, the working pressure of the drill bit in pile breaking can be reduced, the height of the drill bit in skin breaking can be improved, and the efficiency can be improved.
Description
Technical Field
The invention belongs to the field of pile foundation machinery, and particularly relates to a drill bit group for a pile cutter and a use method thereof.
Background
In order to ensure the pile head quality during pile foundation construction, the pile top elevation is generally higher than the design elevation. Such as cast-in-place piles: because sediment at the bottom of the pile and impurities precipitated in the slurry during the pouring process form a slurry layer with a certain thickness on the surface of the concrete when the concrete is poured into the tank, the slurry layer is generally called as floating slurry. Then, after the concrete is solidified, the over-filling part is chiseled, the main reinforcement above the pile top elevation is exposed, and the pile foundation is detected to be qualified, and then the construction of the bearing platform is carried out.
At present, a pile breaking mode commonly adopted in the industry is manual pile breaking or pile breaking by equipment, but both modes have certain defects and problems.
The efficiency of manual pile breaking is extremely low, the labor intensity is high, and certain potential safety hazards exist; the pile breaker has high pile breaking efficiency, but poor pile breaking quality, and is very easy to bend and break the reinforcing steel bars during pile breaking.
Therefore, the current development speed of pile breaking industry is low, the pile breaking equipment has not realized technical breakthrough, and the development of the whole industry is restricted.
The pile cutter breaking mode and the drill bit shape which are commonly adopted in the industry at present are shown in figures 1 and 2. Working principle: the drill bit is pushed by a hydraulic cylinder and cuts into the pile body, so that the drill bit cuts into the depth far beyond the depth of the protective layer for sectionally crushing the concrete. The reinforcing steel bars are easy to bend and break in the pile breaking process of the pile breaking mode. In the prior art, chinese patent application number: 202010792792.6 discloses a pile cutting machine for constructional engineering, which is characterized in that drill rods in the pile cutting machine which are circumferentially distributed are adjusted to form a required component structure, pile cutting of different concrete piles is facilitated, the adjusted drill rods and the surface of the pile body can achieve a vertical effect, pile cutting is facilitated, meanwhile, the drill rods are protected from being askew, the service life of the drill rods is influenced, but the drill rod cutting depth is also uncontrollable, and steel bars in the concrete are easy to bend and break.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a drill bit group for a pile cutter and a use method thereof, which can adjust the depth of the drill bit penetrating into a concrete pile, realize the crust breaking of a reinforcement protection layer and simultaneously ensure that the reinforcement is not bent and broken.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the utility model provides a bore bit group for pile cutter, includes support, bore bit, regulating plate, and the support includes sleeve, limiting plate, fixed plate, sleeve tip and limiting plate one side fixed connection, fixed plate and limiting plate one side fixed connection, and the bore bit passes the limiting plate and is connected with the fixed plate, and the limiting plate opposite side is through the cutting depth of increase and decrease regulating plate quantity adjustment bore bit.
The drill bit comprises a drill bit body and a bit crown plate, and the bit crown plate is fixedly connected with the drill bit body along the axial direction of the drill bit body.
The head crown plate is arranged on the other side of the limiting plate.
The top end of the drill bit body is aligned with the outer edge of the head crown plate.
The thickness of the front part and the top edge of the crown plate is smaller than that of the middle part.
And a rib plate is welded between the fixed plate and the limiting plate.
The adjusting plate is connected with the limiting plate through a pin shaft.
The support is connected with more than two drill bits.
The application method of the drill bit set for the pile cutter comprises the following steps:
1) Drill bit groups are uniformly distributed along the radial direction, and each drill bit group is connected with a piston rod of an oil cylinder;
2) Determining the installation quantity of the adjusting plates according to the depth of the concrete pile protection layer;
3) The oil cylinders drive the drill bit groups, and after all the drill bit groups touch the pile skin of the concrete pile, the skin is broken, until the limiting plate or the adjusting plate contacts with the pile skin of the concrete pile, the drill bit groups stop moving forwards, and the skin breaking is completed.
In the step 2), the skin is broken at the position 80-120 mm away from the top of the concrete pile in advance, so that the depth of the concrete pile protective layer is judged.
Compared with the prior art, the invention has the beneficial effects that:
the pile breaking device solves the problems that equipment replaces manpower and steel bars are not damaged, and ensures the pile breaking operation efficiency. The drill bit set adopts a structure with the adjustable skin breaking depth, so that the steel bar is protected while the skin breaking of the steel bar protection layer is realized, and the steel bar is prevented from being bent and broken. The depth of the drill bit entering the concrete pile is adjusted through the arrangement of the adjusting plate. The drill bit is provided with the crown plate, so that the concrete on the drill bit can be loosened, the working pressure of the drill bit in pile breaking can be reduced, the height of the drill bit in skin breaking can be improved, and the efficiency can be improved.
Drawings
Fig. 1 is a schematic structural view of an old type pile cutter.
Fig. 2 is a schematic view of the working state of the old type pile cutter.
Fig. 3 is a schematic view of a construction of a bit set for a stub.
Fig. 4 is a schematic diagram of a second construction of a bit set for a stub.
Fig. 5 is a schematic view of the structure of the bracket.
Fig. 6 is a schematic structural view of a bracket.
Fig. 7 is a schematic view of the structure of the bit.
Fig. 8 is a schematic view of a stub shaft construction for mounting a bit set for the stub shaft.
Fig. 9 is a schematic structural view of a concrete pile.
Fig. 10 is a schematic structural view of the concrete pile after the crust breaking.
In the figure: 1-old bit 2-concrete pile 3-bracket 4-bit 5-adjusting plate 6-pin shaft 7-cotter pin 8-elastic cylindrical pin 9-pile cover 10-reinforcing steel 11-pile core 31-limit plate 32-sleeve 33-fixing plate 34-rib plate 35-slide block 41-bit body 42-head crown plate.
Detailed Description
The present invention will be described in detail below with reference to the drawings of the specification, but it should be noted that the practice of the present invention is not limited to the following embodiments.
Referring to fig. 3-10, a drill bit set for a pile cutter comprises a bracket 3 and a drill bit 4, wherein the bracket 3 is used for fixing the drill bit 4 and is connected with a hydraulic cylinder, the bracket 3 comprises a sleeve 32, a limiting plate 31 and a fixing plate 33, the end part of the sleeve 32 is fixedly connected with one side of the limiting plate 31, the fixing plate 33 is fixedly connected with one side of the limiting plate 31, the drill bit 4 passes through the limiting plate 31 and is connected with the fixing plate 33, the other side of the limiting plate 31 adjusts the cutting depth of the drill bit 4 by increasing or decreasing the number of adjusting plates 5, and if the length from the head of the drill bit 4 to the limiting plate 31 is the same as the depth of a protective layer of a concrete pile 2, the adjusting plates 5 do not need to be arranged on the other side of the limiting plate 31. According to the difference of the depth of the protective layer of the concrete pile 2, the cutting depth of the drill bit 4 is adjusted by the thickness and the number of the adjusting plates 5 during the crust breaking.
In addition, the limiting plate 31 can adopt a curved plate structure which is consistent with or close to the outer shape of the pile body of the concrete pile 2, so that the depth of each drill bit 4 cutting into the concrete is ensured to be the same. The fixed plate 33 is connected with the drill bit 4 by adopting an elastic cylindrical pin 8, and the disassembly and the assembly are convenient. The sleeve 32 is also fixed with a slide block 35, an inner key groove is arranged in the module sleeve of the pile cutter, and the slide block 35 is matched with the inner key groove to play a role in guiding and preventing the drill bit group from rotating.
Referring to fig. 7, the bit 4 includes a bit body 41 and a bit crown plate 42, and the bit crown plate 42 is fixedly connected to the bit body 41 along an axial direction of the bit body 41. The crown plate 42 can loosen the concrete on the drill bit body 41, reduce the working pressure of the drill bit 4 during pile breaking, protect the pile breaking of the drill bit 4, and improve the height and the efficiency of each time of skin breaking. The crown plate 42 has another function, when the drill bit 4 touches the steel bar 10, the contact length between the drill bit 4 and the steel bar 10 is increased, and the steel bar 10 is not easy to bend and break. In addition, the front and top edge thickness of the crown plate 42 is smaller than the thickness of the intermediate portion, enabling reduction of work resistance. The top end of the bit body 41 is aligned with the outer edge of the crown plate 42. The adjusting plate 5 and the head crown plate 42 are arranged on the other side of the limiting plate 31, and the limiting plate 31 is welded with the sleeve 32.
Referring to fig. 3 and 4, a rib 34 is welded between the fixing plate 33 and the limiting plate 31 to increase the strength of the fixing plate 33 and the limiting plate 31. The adjusting plates 5 are connected with the limiting plates 31 through the pin shafts 6, so that the adjusting plates 5 can be conveniently replaced and the number of the adjusting plates 5 can be increased or decreased at any time on site, and the pin shafts 6 penetrate through the adjusting plates 5 and the limiting plates 31 and then are connected with the cotter pins 7 so as to prevent the pin shafts 6 from falling off. The pin shaft 6 can be provided with a plurality of holes, and the cotter pins 7 are placed in different holes according to the number and thickness of the adjusting plates 5.
Referring to fig. 3 and 4, the support 3 is connected with more than two drill bits 4, which are symmetrically arranged relative to the central axis of the sleeve 32, and 2 or 3 drill bits 4 can be used for working respectively when the concrete piles 2 with different strengths are broken, so as to reduce the working pressure of the system and reduce the cost. When 3 bits 4 are adopted, the bit 4 arranged in the middle is directly connected with the sleeve 32, and the bit body 41 is positioned and connected with the sleeve 32 by the elastic cylindrical pin 8.
Referring to fig. 3 and 4, and fig. 8 to 10, the pile cutter is provided with a plurality of modules along the radial direction, each module comprises a hydraulic cylinder and a drill bit group, and the drill bit group is arranged on a piston rod of the hydraulic cylinder. And (5) breaking the skin at the position 80-120 mm away from the top of the concrete pile 2 in advance, so as to judge the depth of the protective layer of the concrete pile 2. The installation number or thickness of the adjusting plates is determined according to the depth of the protective layer of the concrete pile 2.
And adjusting the positions of all the drill bit groups, starting to break the crust after all the drill bit groups touch the crust of the concrete pile 2, simultaneously working all the drill bit groups, stopping the drill bit groups to move forward when all the outermost adjusting plates of all the drill bit groups touch the crust of the concrete pile 2, and completing the crust breaking and protecting the steel bars 10. The concrete pile 2 after the skin breaking is cut off from the root by the pile cutting mode and then pulled out as the steel bars are exposed. The whole pile body is broken and cut off, and the reinforcing steel bars are well protected.
Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.
Claims (4)
1. The application method of the drill bit set for the pile cutter is characterized by comprising the following steps of:
1) The drill bit groups are uniformly distributed along the radial direction, and each drill bit group is connected with a piston rod of a hydraulic cylinder;
2) Determining the installation quantity of the adjusting plates according to the depth of the concrete pile protection layer; the skin is broken at the position 80-120 mm away from the top of the concrete pile in advance, so that the depth of the protective layer of the concrete pile is judged;
3) The hydraulic cylinders drive the drill bit groups, and after all the drill bit groups touch the pile skin of the concrete pile, the skin is broken until the limiting plate or the adjusting plate is contacted with the pile skin of the concrete pile, and the drill bit groups stop moving forwards, so that the skin breaking is completed;
the drill bit group for the pile cutter comprises a bracket, a drill bit and an adjusting plate, wherein the bracket comprises a sleeve, a limiting plate and a fixing plate, the end part of the sleeve is fixedly connected with one side of the limiting plate, the fixing plate is fixedly connected with one side of the limiting plate, the drill bit penetrates through the limiting plate to be connected with the fixing plate, and the other side of the limiting plate adjusts the cutting depth of the drill bit by increasing or decreasing the number of the adjusting plate;
the drill bit comprises a drill bit body and a bit crown plate, and the bit crown plate is fixedly connected with the drill bit body along the axial direction of the drill bit body; the thickness of the front part and the top edge of the head crown plate is smaller than that of the middle part; when the drill bit is in contact with the steel bar once, the contact length between the drill bit and the steel bar is increased, and the steel bar is not easy to bend and break;
The head crown plate is arranged on the other side of the limiting plate;
The top end of the drill bit body is aligned with the outer edge of the head crown plate.
2. The method of claim 1, wherein a rib plate is welded between the fixing plate and the limiting plate.
3. The method of claim 1, wherein the adjusting plate is connected to the limiting plate via a pin.
4. The method of claim 1, wherein more than two bits are connected to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211286852.2A CN115492109B (en) | 2022-10-20 | 2022-10-20 | Drill bit set for pile cutter and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211286852.2A CN115492109B (en) | 2022-10-20 | 2022-10-20 | Drill bit set for pile cutter and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115492109A CN115492109A (en) | 2022-12-20 |
| CN115492109B true CN115492109B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211286852.2A Active CN115492109B (en) | 2022-10-20 | 2022-10-20 | Drill bit set for pile cutter and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115492109B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244605Y (en) * | 1996-01-24 | 1997-01-08 | 中国地质大学（武汉） | Composite sheet tooth drill bit |
| CN202107711U (en) * | 2011-06-09 | 2012-01-11 | 株洲中钨硬质合金有限公司 | Dovetail groove-shaped drill bit |
| CN104227086A (en) * | 2013-06-13 | 2014-12-24 | 苏州文鼎模具有限公司 | Drill bit with adjustable drilling depth |
| CN208293578U (en) * | 2018-05-09 | 2018-12-28 | 中铁十局集团第一工程有限公司 | A kind of hydraulic broken pile machine |
| CN213600374U (en) * | 2020-07-30 | 2021-07-02 | 白银有色集团股份有限公司 | Geological notch sampling U-shaped sawtooth drill |
| CN215165579U (en) * | 2021-02-04 | 2021-12-14 | 吴银寒 | Pile cutter for building engineering |
| CN114657989A (en) * | 2022-04-12 | 2022-06-24 | 辽宁紫竹高科装备股份有限公司 | Annular hydraulic pile breaking machine and double-head swingable drill rod thereof |
| CN218643361U (en) * | 2022-10-20 | 2023-03-17 | 辽宁紫竹高科装备股份有限公司 | Drill bit group for pile cutter |
-
2022
- 2022-10-20 CN CN202211286852.2A patent/CN115492109B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244605Y (en) * | 1996-01-24 | 1997-01-08 | 中国地质大学（武汉） | Composite sheet tooth drill bit |
| CN202107711U (en) * | 2011-06-09 | 2012-01-11 | 株洲中钨硬质合金有限公司 | Dovetail groove-shaped drill bit |
| CN104227086A (en) * | 2013-06-13 | 2014-12-24 | 苏州文鼎模具有限公司 | Drill bit with adjustable drilling depth |
| CN208293578U (en) * | 2018-05-09 | 2018-12-28 | 中铁十局集团第一工程有限公司 | A kind of hydraulic broken pile machine |
| CN213600374U (en) * | 2020-07-30 | 2021-07-02 | 白银有色集团股份有限公司 | Geological notch sampling U-shaped sawtooth drill |
| CN215165579U (en) * | 2021-02-04 | 2021-12-14 | 吴银寒 | Pile cutter for building engineering |
| CN114657989A (en) * | 2022-04-12 | 2022-06-24 | 辽宁紫竹高科装备股份有限公司 | Annular hydraulic pile breaking machine and double-head swingable drill rod thereof |
| CN218643361U (en) * | 2022-10-20 | 2023-03-17 | 辽宁紫竹高科装备股份有限公司 | Drill bit group for pile cutter |
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| Publication number | Publication date |
|---|---|
| CN115492109A (en) | 2022-12-20 |
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