CN114776225A - Anti-slide pile drilling machine equipment and drill bit - Google Patents
Anti-slide pile drilling machine equipment and drill bit Download PDFInfo
- Publication number
- CN114776225A CN114776225A CN202210188921.XA CN202210188921A CN114776225A CN 114776225 A CN114776225 A CN 114776225A CN 202210188921 A CN202210188921 A CN 202210188921A CN 114776225 A CN114776225 A CN 114776225A
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- CN
- China
- Prior art keywords
- drill bit
- lelo
- lelo triangular
- guiding
- base body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000007790 scraping Methods 0.000 claims abstract description 4
- 229920000433 Lyocell Polymers 0.000 claims description 14
- 239000002689 soil Substances 0.000 abstract description 3
- 230000005641 tunneling Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000036346 tooth eruption Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The application discloses anti-slide pile drilling machine equipment and a drill bit, wherein the drill bit comprises a square frame, a Lelo triangular base body, a guide Lelo triangular block, a cutting tooth assembly and a scraper; the guiding Lelo triangular block is arranged in the square frame and used for being connected with a transmission mechanism, the guiding Lelo triangular block is fixedly connected with the Lelo triangular base body, the pick assembly is convexly arranged on the end face, far away from the guiding Lelo triangular block, of the Lelo triangular base body, and the scraper is arranged on the peripheral portion of the Lelo triangular base body and used for scraping a pile hole. The drill bit can rapidly excavate square holes in the geological of the rock-soil layer, and is high in tunneling efficiency and long in service life.
Description
Technical Field
The application relates to the field of piling machinery, in particular to anti-slide pile drilling machine equipment and a drill bit.
Background
When infrastructure construction is carried out in hilly areas, slope stability construction is often required, the anti-bending and anti-shearing capacity of a rock-soil layer is improved by driving the anti-slide piles into a slope area, the slope stability is guaranteed, the anti-slide piles are suitable for shallow-layer and medium-deep-layer landslides, and slope sliding can be effectively prevented. In order to improve the bearing capacity of the anti-slide pile, a square pile is usually used to replace a round pile, and a common construction method comprises the modes of matching drilling machine guide holes with manual repair and excavation, direct excavation by a milling cutter and the like, wherein the excavation operation speed is low, the efficiency is low, the construction cost is high, meanwhile, great manual risks exist, the torque and impact borne by the milling cutter are too large, the tunneling efficiency is slow, and meanwhile, the milling cutter is high in damage speed. Therefore, a drill bit capable of rapidly excavating square holes in the geological layer of rock and soil is required to be developed.
Disclosure of Invention
The utility model provides a drill bit, this drill bit can excavate the square hole fast in ground layer geology, and tunnelling efficiently, long service life. Another object of the present application is to provide a slide pile drilling rig apparatus applying the above-described drill bit.
To achieve the above objects, the present application provides a drill bit including a square frame, a reuleaux triangle base, a guided reuleaux triangle block, a pick assembly, and a blade; the cutting pick assembly is arranged on the end face, far away from the guiding Lelo triangular block, of the Lelo triangular base in a protruding mode, and the scraper is arranged on the periphery of the Lelo triangular base and used for scraping a pile hole.
Optionally, the lyocell cam body is provided with three sets of radially extending mounting bodies remote from the end face of the leading lyocell cam block, and the pick assembly includes a plurality of sets of picks provided on the mounting bodies.
Optionally, the cutting teeth are arranged at an angle to an axial direction of the leilo triangle base body, and all the cutting teeth are arranged obliquely towards a rotation direction of the leilo triangle base body.
Optionally, the outer peripheral surface of the mounting base is flush with the reuleaux triangle base.
Optionally, a group of side surfaces of the mounting base coincides with a connecting line between the center and the vertex of the lelo triangle base, and the side surfaces are provided with mounting grooves extending along the length direction thereof, and the scraper is fixed to the mounting grooves by bolts.
Optionally, wear strips are disposed on the periphery of one face of the guiding lelo triangular block, and the periphery of one face of the guiding lelo triangular block far away from the lelo triangular base.
Optionally, one surface of the guiding reuleaux triangle block, which is far away from the reuleaux triangle base body, is provided with a spigot and a threaded hole for connecting a transmission shaft.
The present application also provides an anti-slide pile drill rig apparatus comprising a drill bit as described in any one of the above.
During drilling construction, a rotary drilling rig and a conventional drill bit can be used for drilling and guiding holes, then the drill bit provided by the application is replaced to further break rock and trim the rock, and a required square hole is obtained. The specific implementation is that a transmission mechanism is utilized to drive a guide Lelo triangular block to rotate in a square frame, at the moment, the guide Lelo triangular block revolves around the center of the square frame while rotating around the center of the guide Lelo triangular block, the track of any point deviating from the center/axis of the Lelo triangular base body is a square with arc transition, firstly, a rock stratum is damaged through a cutting pick assembly and is rotationally dug to form a square hole, meanwhile, a scraper on the periphery of the Lelo triangular base body scrapes and repairs the undercut part on the periphery of the square hole, and the purpose of rapidly digging to form the square hole is achieved. When the cutting pick assembly at the bottom is used for digging, the scraper at the side part is matched, so that the digging speed is ensured, and the service life of the drill bit is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of a drill bit provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a guided Lelo triangle block and a Lelo triangle base;
FIG. 3 is a layout view of a pick assembly;
figure 4 is a track diagram of the pick assembly.
Wherein:
1-cutting pick, 2-scraper, 3-Lelo triangular base body, 4-wear-resistant strip, 5-guiding Lelo triangular block and 6-square frame;
31-mounting a substrate;
51-spigot and 52-threaded hole.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In order to better understand the technical scheme of the present application, the following detailed description is provided for the person skilled in the art with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 4, fig. 1 is a block diagram of a drill bit according to an embodiment of the present application, fig. 2 is a schematic diagram of a guiding leilo triangle block and a leilo triangle base, fig. 3 is a layout diagram of a cutting pick assembly, and fig. 4 is a trajectory diagram of the cutting pick assembly.
The embodiment of the application provides a drill bit, which mainly comprises a square frame 6, a guiding Lelo triangular block 5, a Lelo triangular base body 3, a scraper 2 and a cutting pick assembly. As shown in fig. 1 and 2, the guiding lailo triangle block 5 is disposed in the square frame 6 and is used for being connected with the transmission mechanism, the square frame 6 limits the guiding lailo triangle block 5, so that the guiding lailo triangle block 5 can rotate around the axis of the guiding lailo triangle block 5 under the driving of the transmission shaft of the transmission mechanism, and meanwhile, the guiding lailo triangle block 5 can be attached to the inner wall of the square frame 6 through the side portion of the guiding lailo triangle block, and the guiding lailo triangle block can rotate around the center of the square frame 6.
The guided reuleaux triangle block 5 is fixedly connected with the reuleaux triangle base body 3, welding or integral forming is generally adopted, and the cutting pick assembly and the scraper 2 are made of hard alloy. The pick assembly is disposed on and projects relative to the end face of the lyocell triangular base 3 remote from the end leading to the lyocell block 5, and the scraper blade 2 is disposed at the periphery of the lyocell base. When the drill bit is in the operating condition who excavates downwards, the pick subassembly is located the bottommost of drill bit to at first utilize the broken rock stratum of pick subassembly and excavate and form the quad slit, along with the rotation of drill bit, set up the scraper 2 and the profile modification of scraping of the square hole in the week portion of Lelo triangle base member 3, improve quad slit pore-forming quality, be convenient for the friction pile and squeeze into the drilling.
With further reference to fig. 1 to 3, the cutting pick assembly comprises a plurality of cutting picks 1, a leilo triangle base body 3 having a mounting base 31 projecting from an end face of the leilo triangle block 5, the cutting picks 1 being arranged equidistantly on a lower end face of the mounting base 31 to form a full face cut, and being quickly replaceable after being damaged, said lower end face being defined as the end face of the bottom of the mounting base 31 parallel to a horizontal plane when the drill is being drilled down. Specifically, the mounting bases 31 are provided in three sets, and the three sets of mounting bases 31 are substantially arc-shaped trapezoids and are radially provided on the end face of the lelo triangle base 3. The outer peripheral surface of the installation base body 31 is preferably flush with the outer peripheral surface of the Lelo triangular base body 3, the side surface of one side of the installation base body 31 coincides with a connecting line of the center and the vertex angle of the Lelo triangular base body 3, namely, the vertex angle of the installation base body 31 is located at the vertex angle of the Lelo triangular base body 3, the side surface of the installation base body is provided with an installation groove extending along the length direction of the installation base body, the scraper 2 is arranged in the installation groove and is installed and pressed through bolts, and the scraper 2 is fast replaced after being worn. In other words, the scraper 2 extends along the connecting line direction of the center and the top angle of the Lelo triangular base body 3, so that the drilling hole can be conveniently repaired.
In order to facilitate the breaking of the rock formation by the cutting pick 1, the cutting pick 1 is inclined at an angle to the axial direction of the drill bit, and typically all of the ratchet teeth are inclined towards the lelo triangular base 3, i.e. the direction of rotation of the drill bit. The motion trail of the cutting pick 1 is shown in fig. 4, under the drive of the guiding Lelo triangular block 5 and the Lelo triangular base body 3, the cutting pick 1 rotates to crush rock strata to initially form an approximately square drill hole, and meanwhile, the scraper 2 repairs underexcavated parts around the drill hole.
In one embodiment, as shown in fig. 2, in order to facilitate the connection of the guiding reuleaux triangle block 5 with the transmission shaft of the transmission mechanism, the end surface of the guiding reuleaux triangle block 5, which is far away from the reuleaux triangle base 3, is provided with a spigot 51 and a plurality of threaded holes 52, and the threaded holes 52 are uniformly arranged along the circumferential direction of the spigot 51, so that the spigot 51 is used for positioning, and the reliability of the transmission connection is improved through the threaded holes 52.
Simultaneously, in order to slow down the wearing and tearing of drill bit, this application sets up wear strip 4 at the terminal surface of the square frame 6 of the laminating of lyocell triangle base member 3 and the terminal surface that deviates from lyocell triangle base member 3 of direction lyocell triangle piece 5 especially. Referring to fig. 2, the lyocell triangular base 3 is slotted at the peripheral edge leading to the lyocell triangular block 5, into which the wear strips 4 are inserted; similarly, the edge of the periphery of the guiding Lelo triangular block 5 is grooved, the wear-resistant strip 4 is inserted into the grooved edge, and the wear-resistant strip 4 can be replaced after the groove is worn.
When using the drill bit that this application provided to carry out quad slit drilling construction, at first utilize and dig rig and traditional drill bit soon and drill and draw the hole, then change the further broken rock stratum of drill bit that this application provided and the deburring, obtain the quad slit that needs fast. Specifically, the transmission mechanism is used for driving the guiding Lelo triangular block 5 to rotate around the axis of the guiding Lelo triangular block 5, and meanwhile, the guiding Lelo triangular block 5 is driven to rotate around the center of the square frame 6 in the square frame 6, so that the cutting tooth 1 runs according to the track shown in fig. 4, firstly, the rock stratum is damaged by the cutting tooth 1, then, the scraper 2 is used for shaping, and a high-quality square hole suitable for being punched by the slide-resistant pile is obtained. Make the whole required moment of torsion and the power of the drill bit that this application provided littleer, it is efficient to tunnel, and pick 1 and 2 cooperation extension drill bit life of scraper influence little to rock stratum around the pore wall.
The embodiment of the application further provides slide-resistant pile drilling machine equipment, which comprises a transmission mechanism and a drill bit recorded in the embodiment, wherein the transmission mechanism and other parts of the mechanism can be arranged by referring to the existing slide-resistant pile drilling machine equipment, and the details are not repeated in the application.
The anti-slide pile drilling rig and drill bit provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (8)
1. A drill bit is characterized by comprising a square frame, a Lelo triangular base body, a guide Lelo triangular block, a cutting pick assembly and a scraper; the guiding Lelo triangular block is arranged in the square frame and used for being connected with a transmission mechanism, the guiding Lelo triangular block is fixedly connected with the Lelo triangular base body, the pick assembly is convexly arranged on the end face, far away from the guiding Lelo triangular block, of the Lelo triangular base body, and the scraper is arranged on the peripheral portion of the Lelo triangular base body and used for scraping a pile hole.
2. The drill bit of claim 1, wherein the reuleaux triangle base has three sets of radially extending mounting bases disposed away from the end face of the leading reuleaux triangle block, and the pick assembly includes a plurality of sets of picks disposed on the mounting bases.
3. The drill bit of claim 2, wherein the picks are angled with respect to an axial direction of the Lelo triangular base, and all of the picks are angled toward a direction of rotation of the Lelo triangular base.
4. The drill bit of claim 2, wherein the outer peripheral surface of the mounting base is flush with the reuleaux triangle base.
5. The drill bit of claim 4, wherein a set of side surfaces of the mounting base coincide with a line connecting the center and the apex of the Lelo triangle base, and wherein the side surfaces define mounting slots extending along the length thereof, the blades being secured to the mounting slots by bolts.
6. The drill bit of claim 1, wherein wear strips are provided around the perimeter of the face of the lyocell cam that abuts the leading lyocell cam, and the face of the leading lyocell cam that faces away from the lyocell cam.
7. The drill bit of claim 1, wherein a face of the guiding Lelo triangle block remote from the base of the Lelo triangle is provided with a spigot and a threaded bore for connection to a drive shaft.
8. An anti-slide pile drilling rig apparatus, characterized in comprising a drill bit according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210188921.XA CN114776225A (en) | 2022-02-28 | 2022-02-28 | Anti-slide pile drilling machine equipment and drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210188921.XA CN114776225A (en) | 2022-02-28 | 2022-02-28 | Anti-slide pile drilling machine equipment and drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114776225A true CN114776225A (en) | 2022-07-22 |
Family
ID=82423029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210188921.XA Pending CN114776225A (en) | 2022-02-28 | 2022-02-28 | Anti-slide pile drilling machine equipment and drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114776225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354960A (en) * | 2022-09-20 | 2022-11-18 | 中国铁建重工集团股份有限公司 | Hard rock rectangular slide-resistant pile hole forming method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336426A (en) * | 2005-06-06 | 2006-12-14 | Shimizu Corp | Tunnel boring machine |
| CN101408092A (en) * | 2008-11-26 | 2009-04-15 | 大庆石油管理局 | Rear inclined circular angle-shaped spiral drag bit |
| CN102216554A (en) * | 2008-10-13 | 2011-10-12 | 贝克休斯公司 | Drill bit with continuously sharp edge cutting elements |
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
| CN208473712U (en) * | 2018-06-29 | 2019-02-05 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | One kind being used for the anti-balled bit of horizontal well |
| CN111691833A (en) * | 2020-06-10 | 2020-09-22 | 济南市市政工程设计研究院（集团）有限责任公司 | Long spiral square hole drill rod, drilling device and working method |
| CN212803040U (en) * | 2020-08-14 | 2021-03-26 | 何升 | Anti-slide pile square hole forming equipment |
| CN213234956U (en) * | 2020-07-16 | 2021-05-18 | 周兆弟 | Be applied to drilling tool and stake machine of stake machine |
| CN214007076U (en) * | 2020-09-18 | 2021-08-20 | 周兆弟 | Drill bit |
| CN214659923U (en) * | 2021-04-08 | 2021-11-09 | 四川沿江攀宁高速公路有限公司 | Square hole drilling tool and rectangular hole drilling tool |
| CN215213340U (en) * | 2021-02-20 | 2021-12-17 | 北京大地高科地质勘查有限公司 | Scraper jet drill bit |
-
2022
- 2022-02-28 CN CN202210188921.XA patent/CN114776225A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336426A (en) * | 2005-06-06 | 2006-12-14 | Shimizu Corp | Tunnel boring machine |
| CN102216554A (en) * | 2008-10-13 | 2011-10-12 | 贝克休斯公司 | Drill bit with continuously sharp edge cutting elements |
| CN101408092A (en) * | 2008-11-26 | 2009-04-15 | 大庆石油管理局 | Rear inclined circular angle-shaped spiral drag bit |
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
| CN208473712U (en) * | 2018-06-29 | 2019-02-05 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | One kind being used for the anti-balled bit of horizontal well |
| CN111691833A (en) * | 2020-06-10 | 2020-09-22 | 济南市市政工程设计研究院（集团）有限责任公司 | Long spiral square hole drill rod, drilling device and working method |
| CN213234956U (en) * | 2020-07-16 | 2021-05-18 | 周兆弟 | Be applied to drilling tool and stake machine of stake machine |
| CN212803040U (en) * | 2020-08-14 | 2021-03-26 | 何升 | Anti-slide pile square hole forming equipment |
| CN214007076U (en) * | 2020-09-18 | 2021-08-20 | 周兆弟 | Drill bit |
| CN215213340U (en) * | 2021-02-20 | 2021-12-17 | 北京大地高科地质勘查有限公司 | Scraper jet drill bit |
| CN214659923U (en) * | 2021-04-08 | 2021-11-09 | 四川沿江攀宁高速公路有限公司 | Square hole drilling tool and rectangular hole drilling tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354960A (en) * | 2022-09-20 | 2022-11-18 | 中国铁建重工集团股份有限公司 | Hard rock rectangular slide-resistant pile hole forming method |
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