CN104563886A - Segmented bit of long spiral drilling machine - Google Patents
Segmented bit of long spiral drilling machine Download PDFInfo
- Publication number
- CN104563886A CN104563886A CN201510016651.4A CN201510016651A CN104563886A CN 104563886 A CN104563886 A CN 104563886A CN 201510016651 A CN201510016651 A CN 201510016651A CN 104563886 A CN104563886 A CN 104563886A
- Authority
- CN
- China
- Prior art keywords
- long
- core
- helical blade
- drilling machine
- spiral drilling
- 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 27
- 230000011218 segmentation Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 8
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 7
- 230000008719 thickening Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 9
- 210000005069 ears Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000002689 soil Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002002 slurry Substances 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
- 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
-
- 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)
- 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 invention discloses a segmented bit of a long spiral drilling machine. The segmented bit of the long spiral drilling machine comprises a lip-shaped locating ring arranged at the top end of the bit and having axial direction locating action and connected to the hollow flow passage of the long spiral drilling machine, a long spiral drilling rod is connected via the fixing ears and fixing screws at two sides of the locating ring, the bit is divided into the upper cutting section drilled core and lower guiding section drilled core, the drilled core is provided with the helical blade, the front end of the helical blade is provided with the cutting edge, the cutting section helical blade and the helical blade of the long spiral drilling rod are the same on diameter, the diameter of the guiding section blade is not changed and smaller, the big and small helical blade helical grooves are connected, the bottom end of the bit main body is provided with a bit sharp end and the sharp end comprises the main cutting cutter. The segmented bit of the long spiral drilling machine is suitable for the lock-joint pile waterproof curtain construction and construction of other long spiral pile with beforehand guiding hole after forming the guiding hole beforehand, the problem of the pile perpendicularity and large pile deviation in the long spiral construction can be effectively solved and the pile-forming quality of the lock-joint pile is improved.
Description
Technical field
The present invention relates to a kind of novel long-spiral drilling machine segmentation drill bit, be mainly used in the construction of the stake of field of civil engineering long spire and occluding pile wall thereof.
Background technology
In base pit engineering, occluding pile wall water-stop curtain is compared diaphragm wall technique and is had good economy performance and the feature such as ground adaptability is strong, applies increasingly extensive, but there is the restriction of the aspects such as pile position deviation, pile body verticality and occlusion ability in engineering.Interlocking pile construction very high to the requirement of forming machinery, usual two sequence stakes all adopt full-rotating drill, band outer sleeve revolve large-scale pile foundation construction equipment such as digging pile foundation, the high request of construction equipment also limits the application of occluding pile wall to a certain extent.Long spire stake, compared to engineering methods such as slurry drilled piles, has quick, environmental protection, economic dispatch feature, has been widely used in various foundation pit supporting project and pile foundation engineering.But limitting by its technology and equipment, pile body degree control and stake position control poor, can have a strong impact on the effect of water-stop curtain for occluding pile wall, the potential safety hazard such as cause that curtain leaks.In order to play the advantage of long spire pile and occluding pile wall better, need the problem solving long spire construction pile body degree control and the control of stake position.
Summary of the invention
In order to solve pile body verticality and stake position control problem, the invention provides one after drawing hole, effectively improving long spire agitation pile pile body verticality, solving the long-spiral drilling machine segmentation drill bit of pile position deviation problem.
The object of the invention is to be achieved through the following technical solutions: a kind of long-spiral drilling machine segmentation drill bit, comprise drill body, described drill bit bottom is provided with bit point of the drill 1, bit point of the drill 1 is provided with main cutting cutter 2, middle part is that long cylinder bores core, drill end has been provided with the lip locating ring 7 of axial location effect, lip locating ring 7 both sides are provided with a pair fixing ear 8 be fixedly connected with long screw drill rod 10, fixing ear 8 is mounted with screw 9, it is boundary that long cylinder bores Xin Yizuanxin center, segment of cutting is divided into bore core 5 and boot segment brill core 6, long cylinder bores core and is provided with helical blade 3, helical blade 3 front end has cutting edge 4, helical blade 3 diameter that segment of cutting bores core 5 is greater than the helical blade 3 that boot segment bores core 6.
The fixing ear 8 of described drill end is connected with the holddown groove of long screw drill rod 10 by fixed screw 9.Main cutting cutter 2 upper end is bored core 6 by both sides fixed screw 9 with boot segment and is connected.
The length that described long cylinder bores core is 3m, and diameter is identical with long screw drill rod 10.
Described long cylinder bores core top 1/4th for segment of cutting brill core 5, and helical blade 3 diameter that segment of cutting bores core 5 is identical with the helical blade of long screw drill rod 10, and diameter is 800-1200mm, and helical blade 3 diameter that boot segment bores core 6 is 200-600mm.Long screw drill rod 10, segment of cutting bore the helicla flute that core 5 and boot segment bore core 6 and are connected, and the helicla flute of size helical blade is connected and makes the soil body on boot segment helical blade rise to segment of cutting with drill bit finally to discharge from long screw drill rod helicla flute.The helical blade 3 of segment of cutting brill core 5 adopts the thickening helical blade of 3-15mm, and surface is provided with regular pick 11.
After drawing hole, drill bit is made to aim at pre-making hole, unload the side fixed screw 9 boring core 6 junction for fixed drill bit most advanced and sophisticated 1 and boot segment, in the process of boring under long-spiral drilling machine, bit point of the drill 1 and boot segment bore core 6 and first enter and draw hole, partially soft relative to surrounding soil owing to drawing mud in hole, bit point of the drill and boot segment bore core and are easier to when soil body counter-force retrains around bore under pre-making hole, thus the verticality in the process of boring under ensureing drill bit.When squeezing into desired depth, upwards carry long screw drill rod 10, because side fixed screw 9 is removed, bit point of the drill 1 under gravity, rotate to opposite side, open long spire hollow duct, make the fillers such as concrete can fall into boring at the upper process once-cast pile carried by hollow duct.
In drilling process, when drill bit runs into both sides, pre-making hole stirring pile concrete, pile body can be broken up by the pick 11 that segment of cutting bores on the helical blade 3 of core 5 under comparatively high pulling torque effect, then under the secondary pulse effect of the cutting edge of screw thread vane nose, larger concrete is continued to smash, the coagulation local product blocks smashed etc. are along with screw thread continuation rising around brill core, and extrusion shearing destroys further, and the helicla flute finally by long screw drill rod 10 is discharged.
The present invention can utilize the feature of segmentation drill bit after drawing hole in advance, long screw drill rod top is retrained by rig, and bit point of the drill and boot segment bore core and retrain by the soil body, and upper and lower two ends are simultaneously by force constraint, effectively can ensure the verticality of long spire pore-forming, solve the problem that pile position deviation is large; Due on to carry in process bit point of the drill and rotate, open long-spiral drilling machine hollow channel, be convenient to add the fillers such as concrete, achieve long screw drill rod piling, cast integrated construction, saved the working time, ensure that pile quality.In addition, the helicla flute of helical blade is connected, and is conducive to the ride comfort of drilling process and helicla flute row thing.
Accompanying drawing explanation
Fig. 1 is long-spiral drilling machine segmentation drill bit structure schematic diagram; Fig. 2 is that long-spiral drilling machine segmentation bit cutting section bores core helical blade sectional drawing;
Accompanying drawing number title: 1, bit point of the drill, 2, main cutting cutter, 3, helical blade, 4, cutting edge, 5, segment of cutting bores core, 6, boot segment bores core, 7, lip locating ring, 8, fixing ear, 9, fixed screw, 10, long screw drill rod, 11, pick.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, drill bit top has been provided with the lip locating ring 7 of axial positioning function, and lip locating ring 7 both sides are provided with a pair fixing ear 8 be fixedly connected with long screw drill rod 10, and fixing ear 8 is provided with fixed screw 9; Boring core divides segment of cutting to bore core 5 and boot segment brill core 6, and bore on core and arrange helical blade 3, all there is cutting edge 4 helical blade 3 front end; The helical blade 3 that segment of cutting bores core 5 is provided with pick 11, and there is bit point of the drill 1 drill bit bottom, and bit point of the drill 1 is provided with main cutting cutter 2.
After drawing hole, drill bit is made to aim at pre-making hole, unload the side fixed screw 9 boring core 6 junction for fixed drill bit most advanced and sophisticated 1 and boot segment, in the process of boring under rig, bit point of the drill 1 and boot segment bore core 6 and first enter pre-making hole, partially soft relative to surrounding soil owing to drawing mud in hole, boot segment bores core 6 and is easier to when soil body counter-force retrains around bore under drawing hole, effectively ensure that the verticality of drill bit in drilling process.When squeezing into desired depth, upwards carry long screw drill rod 10, owing to having unloaded side fixed screw 9, make bit point of the drill 1 under gravity, rotate to opposite side, thus open long spire hollow duct, make the fillers such as concrete can fall into boring by hollow duct, thus reach pile-forming effect in the upper process carried.
In drilling process, because size helical blade helicla flute is connected, make the soil body on boot segment helical blade rise to segment of cutting with drill bit and finally get rid of from long screw drill rod helicla flute.When drill bit runs into both sides, pre-making hole stirring pile concrete, pile body can be broken up by pick 11 under comparatively high pulling torque effect, then under the secondary pulse effect of the cutting edge 4 of screw thread blade 3 front end, larger concrete is continued to smash, the concrete block smashed is along with helical blade 3 continuation rising also further extrusion shearing, and the helicla flute finally by long screw drill rod 10 is discharged.
Claims (8)
1. a long-spiral drilling machine segmentation drill bit, comprise drill body, described drill bit bottom is provided with bit point of the drill (1), bit point of the drill (1) is provided with main cutting cutter (2), middle part is that long cylinder bores core (5, 6), it is characterized in that: drill end has been provided with the lip locating ring (7) of axial location effect, lip locating ring (7) both sides are provided with a pair fixing ear (8) be fixedly connected with long screw drill rod (10), fixing ear (8) is mounted with screw (9), long cylinder bores core (5, 6) segment of cutting is divided into bore core (5) and boot segment brill core (6), long cylinder bores core (5, 6) helical blade (3) is provided with, helical blade (3) front end has cutting edge (4), helical blade (3) diameter that segment of cutting bores core (5) is greater than the helical blade (3) that boot segment bores core (6).
2. long-spiral drilling machine segmentation drill bit according to claim 1, it is characterized in that, the fixing ear (8) of drill end is connected by the holddown groove of fixed screw (9) with long screw drill rod (10), and main cutting cutter (2) upper end is bored core (6) by both sides fixed screw (9) with boot segment and is connected.
3. long-spiral drilling machine segmentation drill bit according to claim 1, is characterized in that, the length that described long cylinder bores core (5,6) is 3m, and diameter is identical with long screw drill rod (10).
4. long-spiral drilling machine segmentation drill bit according to claim 1, it is characterized in that, described long cylinder bores core (5,6) top 1/4th for segment of cutting brill core (5), and helical blade (3) diameter that segment of cutting bores core (5) is identical with the helical blade of long screw drill rod (10).
5. long-spiral drilling machine segmentation drill bit according to claim 4, is characterized in that, long screw drill rod (10), segment of cutting bore core (5) and be connected with the helicla flute that boot segment bores core (6).
6. long-spiral drilling machine segmentation drill bit according to claim 5, it is characterized in that, helical blade (3) diameter that described segment of cutting bores core (5) is 800-1200mm, and helical blade (3) diameter that boot segment bores core (6) is 200-600mm.
7. long-spiral drilling machine segmentation drill bit according to claim 4, is characterized in that, described segment of cutting bores the thickening helical blade of helical blade (3) the employing 3-15mm of core (5).
8. long-spiral drilling machine segmentation drill bit according to claim 7, is characterized in that, the surface that described segment of cutting bores the helical blade (3) of core (5) is provided with pick (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016651.4A CN104563886A (en) | 2015-01-14 | 2015-01-14 | Segmented bit of long spiral drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016651.4A CN104563886A (en) | 2015-01-14 | 2015-01-14 | Segmented bit of long spiral drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104563886A true CN104563886A (en) | 2015-04-29 |
Family
ID=53080873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016651.4A Pending CN104563886A (en) | 2015-01-14 | 2015-01-14 | Segmented bit of long spiral drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563886A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275413A (en) * | 2015-11-09 | 2016-01-27 | 华侨大学 | Self-dredging type drilling device |
| CN107618114A (en) * | 2017-06-06 | 2018-01-23 | 宁波鼎科电器有限公司 | Bispin drill bit |
| CN112443282A (en) * | 2020-11-24 | 2021-03-05 | 中煤科工集团重庆研究院有限公司 | Composite spiral drill rod |
-
2015
- 2015-01-14 CN CN201510016651.4A patent/CN104563886A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275413A (en) * | 2015-11-09 | 2016-01-27 | 华侨大学 | Self-dredging type drilling device |
| CN107618114A (en) * | 2017-06-06 | 2018-01-23 | 宁波鼎科电器有限公司 | Bispin drill bit |
| CN112443282A (en) * | 2020-11-24 | 2021-03-05 | 中煤科工集团重庆研究院有限公司 | Composite spiral drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100041 Shijingshan District City, apple Park Avenue, No., building, Jing Jing, layer 12, 2 Applicant after: BEIJING ZHONGYAN DADI TECHNOLOGY CO., LTD. Address before: 100041 Shijingshan District City, apple Park Avenue, No., building, Jing Jing, layer 12, 2 Applicant before: Beijing Zhongyan Dadi Engineering Technology Co., Ltd. |
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| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |