CN204402365U - A kind of long-spiral drilling machine expansion bit - Google Patents
A kind of long-spiral drilling machine expansion bit Download PDFInfo
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- CN204402365U CN204402365U CN201520022424.8U CN201520022424U CN204402365U CN 204402365 U CN204402365 U CN 204402365U CN 201520022424 U CN201520022424 U CN 201520022424U CN 204402365 U CN204402365 U CN 204402365U
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Abstract
A kind of long-spiral drilling machine expansion bit, its drill end is arranged has axial location effect and the lip locating ring be connected with long-spiral drilling machine hollow duct, long screw drill rod is fixed ear by lip locating ring both sides and is connected with screw, boring above in the middle part of core is reducing segment of cutting brill core, its helical blade upwards becomes large gradually, and middle part is that the boot segment that blade diameter is constant bores core below; Bore core and be provided with helical blade, all there is cutting edge helical blade front end, and segment of cutting helical blade divides into pick, and drill bit bottom is provided with bit point of the drill, and most advanced and sophisticated containing main cutting cutter, cutting tool top is connected with brill core by its both sides lip locator and fixed screw.Interlocking pile water-stop curtain construction after the utility model is specially adapted to pre-making hole and other are with the long spire pile driving construction drawing hole in advance, efficiently solves long spire construction pile verticality and the larger problem of pile position deviation.
Description
Technical field
The present invention relates to a kind of novel long-spiral drilling machine expansion bit, be mainly used in the stake of field of civil engineering long spire and occluding pile wall thereof and other are with the construction of long spire stake of drawing hole in advance.
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 expansion 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 expansion 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, the helical blade 3 that boot segment bores core 6 is non-Reducing screw blade, the helical blade 3 that segment of cutting bores core 5 is Reducing screw blade.
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.
The top vane diameter of described Reducing screw blade is identical with the helical blade of long screw drill rod 10, and diameter is 800-1200mm, and bottom blade is identical with the diameter of non-Reducing screw blade, and diameter is 200-600mm.The screw thread trend of Reducing screw blade is consistent with the helical blade of long screw drill rod 10, non-Reducing screw blade, evenly diminishes gradually diametrically.Reducing screw blade 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 drill bit feature after drawing hole in advance, long screw drill rod top is retrained, bit point of the drill and boot segment by rig, bore core to retrain by the soil body, upper and lower two ends by force constraint, effectively can ensure the verticality of long spire pore-forming simultaneously, 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 even reducing of helical blade of segment of cutting, is conducive to the ride comfort of drilling process and helicla flute row thing.
Accompanying drawing explanation
Fig. 1 is long-spiral drilling machine expansion bit structural representation; Fig. 2 is that long-spiral drilling machine expansion bit reducer bores core 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, 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 (9)
1. a long-spiral drilling machine expansion 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), the helical blade (3) that boot segment bores core (6) is non-Reducing screw blade, the helical blade (3) that segment of cutting bores core (5) is Reducing screw blade.
2. long-spiral drilling machine expansion bit according to claim 1, 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).
3. long-spiral drilling machine expansion 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 expansion bit according to claim 1, is characterized in that, the top vane diameter of Reducing screw blade is identical with the helical blade of long screw drill rod (10), and bottom blade is identical with the diameter of non-Reducing screw blade.
5. long-spiral drilling machine expansion bit according to claim 4, is characterized in that, the screw thread of Reducing screw blade trend and the helical blade of long screw drill rod (10), non-Reducing screw blade are consistent, evenly diminish gradually diametrically.
6. long-spiral drilling machine expansion bit according to claim 5, is characterized in that, the top vane diameter of Reducing screw blade is 800-1200mm, and bottom blade diameter is 200-600mm.
7. long-spiral drilling machine expansion bit according to claim 4, is characterized in that, Reducing screw blade adopts the thickening helical blade of 3-15mm.
8. long-spiral drilling machine expansion bit according to claim 7, is characterized in that, the surface of Reducing screw blade is provided with pick (11).
9. long-spiral drilling machine expansion bit according to claim 1, is characterized in that, main cutting cutter (2) upper end is bored core (6) by both sides fixed screw (9) with boot segment and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022424.8U CN204402365U (en) | 2015-01-14 | 2015-01-14 | A kind of long-spiral drilling machine expansion bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022424.8U CN204402365U (en) | 2015-01-14 | 2015-01-14 | A kind of long-spiral drilling machine expansion bit |
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| Publication Number | Publication Date |
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| CN204402365U true CN204402365U (en) | 2015-06-17 |
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| CN201520022424.8U Active CN204402365U (en) | 2015-01-14 | 2015-01-14 | A kind of long-spiral drilling machine expansion bit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533297A (en) * | 2015-01-14 | 2015-04-22 | 北京中岩大地工程技术有限公司 | Diameter-variable drill bit of long-spiral drill |
| CN105507312A (en) * | 2015-11-11 | 2016-04-20 | 李金良 | Variable-section bidirectional soil displacement screw pile and manufacturing method thereof |
-
2015
- 2015-01-14 CN CN201520022424.8U patent/CN204402365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533297A (en) * | 2015-01-14 | 2015-04-22 | 北京中岩大地工程技术有限公司 | Diameter-variable drill bit of long-spiral drill |
| CN105507312A (en) * | 2015-11-11 | 2016-04-20 | 李金良 | Variable-section bidirectional soil displacement screw pile and manufacturing method thereof |
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Address after: 100041 Shijingshan District City, apple Park Avenue, No., building, Jing Jing, layer 12, 2 Patentee after: BEIJING ZHONGYAN DADI TECHNOLOGY CO., LTD. Address before: 100041 Shijingshan District City, apple Park Avenue, No., building, Jing Jing, layer 12, 2 Patentee before: Beijing Zhongyan Dadi Engineering Technology Co., Ltd. |