CN103912219A - Three-wing double-waist-hoop drill for cast-in-situ bored piles - Google Patents
Three-wing double-waist-hoop drill for cast-in-situ bored piles Download PDFInfo
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- CN103912219A CN103912219A CN201410163655.0A CN201410163655A CN103912219A CN 103912219 A CN103912219 A CN 103912219A CN 201410163655 A CN201410163655 A CN 201410163655A CN 103912219 A CN103912219 A CN 103912219A
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Abstract
The invention relates to a three-wing double-waist-hoop drill for cast-in-situ bored piles. The three-wing double-waist-hoop drill for the cast-in-situ bored piles comprises a drill rod, an upper waist hoop, a lower waist hoop, radial plates, wing plates and drill teeth, wherein the upper portion of the drill rod is fixedly connected with the upper waist hoop via the radial plates, the lower portion of the drill rod is fixedly connected with the lower waist hoop via the wing plates, and the drill teeth are welded on the wing plates. Compared with the prior art, the three-wing double-waist-hoop drill is high in drilled perpendicularity precision. Since the upper waist hoop and the lower waist hoop form guides in certain lengths, control precision for perpendicularity of drilled holes is greatly increased, and hole wall stability is improved. Due to limiting functions of the upper waist hoop and the lower waist hoop, a shaking range of a drill head during drilling is reduced, and hole wall stability is further improved. The three-wing double-waist-hoop drill for the cast-in-situ bored piles is capable of drilling holes for ultra-deep piles and in complex layers, like a sand layer, and has a wide application prospect in foundation engineering construction under the soft soil foundation conditions.
Description
Technical field
The present invention relates to drill bit used in a kind of bored pile technique, especially a kind ofly can significantly promote the two waist hoop drill bits of the pore-forming accuracy of bored pile and the three wings of stability.
Background technology
Bored pile refers to and in foundation soil, forms a stake hole at engineering site by machine drilling, and places reinforcing cage, concrete perfusion therein and the stake of making, and is mainly used in the load-bearing basis of upper building or the space enclosing structure of foundation ditch.
Bored pile is the development through decades in China, and technique is comparative maturity, is widely used in the Foundation Design field of national each soft clay area.
Along with the demand of the aspects such as the growing and building height of urban construction increases sharply, construction depth to bored pile and construction precision have proposed more and more higher requirement, and drill bit problem be restriction bored pile always can construction depth and the key factor of vertical precision.Compare conventional drill form, adopt the two waist hoop drill bits of three wings carry out drilling construction can construction depth and the control of verticality precision aspect all have the breakthrough of matter.Because the two waist hoop drill bits of three wings have good guidance quality and stability, can construct and exceed the degree of depth of hundred meters, and verticality precision can reach 1/150, there is direct meaning for promoting bearing capacity of borehole bored concrete pile and range of application.
Summary of the invention
The present invention will provide a kind of bored pile three wings two waist hoop drill bits, this drill bit has good guidance quality and stability, can construct and exceed the degree of depth of hundred meters, and verticality precision can reach 1/150, have direct meaning for promoting bearing capacity of borehole bored concrete pile and range of application.
For achieving the above object, technical scheme of the present invention is: the two waist hoop drill bits of a kind of bored pile three wings, comprise drilling rod, upper waist hoop, lower waist hoop, disc, wing plate, brill tooth, be characterized in: drilling rod top is fixedly connected with upper waist hoop by disc, drilling rod bottom is fixedly connected with lower waist hoop by wing plate, and on wing plate, tooth is bored in welding.
Upper and lower waist hoop is by adopting Q235B steel to process, its thickness 15mm, and height 180mm, upper and lower waist hoop external diameter is identical with drilled pile diameter.Upper and lower waist hoop and drilling rod coaxially arrange, and thick by three 15mm between upper waist hoop and drilling rod, 180mm disc is weldingly connected.
Thick by three 15mm between lower waist hoop and drilling rod, 180mm wing plate is weldingly connected.Distance between upper waist hoop and lower waist hoop is 1000mm.Article three, wing plate forms inverted cone-shaped apex point, 90 ° of bit tip angles.
The beneficial effect that the present invention has compared with conventional drill is:
1. become hole perpendicularity precision high.Due to the guiding of upper and lower twice waist hoop formation certain length, borehole perpendicularity control accuracy is significantly improved.
2. wall stability improves.Due to the effect of contraction of upper and lower twice waist hoop, the shaking amplitude of drill bit in drilling process is reduced, effectively improve wall stability.
The pore-forming that the two waist hoop drill bits of three wings can effectively meet in the bad grounds such as super dark stake boring and layer of sand creeps into, and under Soft Soil, in Foundation Design construction, has broad application prospects.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is along A-A sectional view in Fig. 1;
Fig. 3 is along B-B sectional view in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1 to Figure 3, the two waist hoop drill bits of a kind of bored pile three wings, comprise drilling rod 1, upper waist hoop 2, lower waist hoop 3, disc 4, wing plate 5, bore tooth 6.
Drilling rod 1 top is fixedly connected with upper waist hoop 2 by disc 4, and drilling rod 1 bottom is fixedly connected with lower waist hoop 3 by wing plate 5, and on wing plate 5, tooth 6 is bored in welding.
Upper and lower waist hoop 2,3 is processed by employing Q235B steel, its thickness 15mm, and height 180mm, upper and lower waist hoop 2,3 external diameters are identical with drilled pile diameter.Upper and lower waist hoop 2,3 and drilling rod 1 coaxially arrange.Distance between upper waist hoop 2 and lower waist hoop 3 is 1000mm.Article three, wing plate 5 forms inverted cone-shaped apex point, 90 ° of bit tip angles.
As shown in Figure 2, thick by three 15mm between upper waist hoop 2 and drilling rod 2,180mm disc 4 is weldingly connected.
As shown in Figure 3, thick by three 15mm between lower waist hoop 3 and drilling rod 1, tri-wing plates 4 of 180mm are weldingly connected.
Claims (5)
1. the two waist hoop drill bits of bored pile three wings, comprise drilling rod (1), upper waist hoop (2), lower waist hoop (3), disc (4), wing plate (5), bore tooth (6), it is characterized in that: described drilling rod (1) top is fixedly connected with upper waist hoop (2) by disc (4), drilling rod (1) bottom is fixedly connected with lower waist hoop (3) by wing plate (5), and tooth (6) is bored in the upper welding of wing plate (5).
2. the two waist hoop drill bits of bored pile three wings according to claim 1, it is characterized in that: described upper and lower waist hoop (2,3) is by adopting Q235B steel to process, its thickness 15mm, height 180mm, upper and lower waist hoop (2,3) external diameter is identical with drilled pile diameter.
3. the two waist hoop drill bits of bored pile three wings according to claim 1, it is characterized in that: described upper and lower waist hoop (2,3) coaxially arranges with drilling rod (1), thick by three 15mm between upper waist hoop (2) and drilling rod (1), 180mm disc (4) is weldingly connected; Thick by three 15mm between lower waist hoop (3) and drilling rod (1), 180mm wing plate (5) is weldingly connected.
4. the two waist hoop drill bits of bored pile three wings according to claim 1, is characterized in that: the distance between described upper waist hoop (2) and lower waist hoop (3) is 1000mm.
5. the two waist hoop drill bits of bored pile three wings according to claim 1, is characterized in that: described three wing plates (5) form inverted cone-shaped apex point, 90 ° of bit tip angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163655.0A CN103912219A (en) | 2014-04-23 | 2014-04-23 | Three-wing double-waist-hoop drill for cast-in-situ bored piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163655.0A CN103912219A (en) | 2014-04-23 | 2014-04-23 | Three-wing double-waist-hoop drill for cast-in-situ bored piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103912219A true CN103912219A (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163655.0A Pending CN103912219A (en) | 2014-04-23 | 2014-04-23 | Three-wing double-waist-hoop drill for cast-in-situ bored piles |
Country Status (1)
| Country | Link |
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| CN (1) | CN103912219A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804059A (en) * | 2014-12-31 | 2016-07-27 | 上海市机械施工集团有限公司 | Cast-in-situ bored pile hole-forming device and method |
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN107542407A (en) * | 2017-09-28 | 2018-01-05 | 徐国峰 | A kind of cement surface drill bit |
| CN109083136A (en) * | 2018-06-29 | 2018-12-25 | 广东工业大学 | A kind of anti-overflowing variable section cement-soil stirring pile crown |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533341A (en) * | 1991-07-29 | 1993-02-09 | Tenotsukusu:Kk | Auger for boring for soil cement composite pile |
| CN2288261Y (en) * | 1997-06-17 | 1998-08-19 | 鞠庆海 | Dual-purpose drilling broaching bit controlled by centrifugal wings |
| CN2417283Y (en) * | 2000-03-22 | 2001-01-31 | 卫龙武 | Drill bit with changeable diameter for pouring pile hole |
| CN201635662U (en) * | 2010-04-14 | 2010-11-17 | 方远建设集团股份有限公司 | Combined drill bit used for cast-in place pile |
| CN202000899U (en) * | 2011-03-28 | 2011-10-05 | 郑州市第一建筑工程集团有限公司 | Drill bit of rotary drilling rig |
| CN202578513U (en) * | 2012-05-02 | 2012-12-05 | 上海智平基础工程有限公司 | Filling pile aiguille |
-
2014
- 2014-04-23 CN CN201410163655.0A patent/CN103912219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533341A (en) * | 1991-07-29 | 1993-02-09 | Tenotsukusu:Kk | Auger for boring for soil cement composite pile |
| CN2288261Y (en) * | 1997-06-17 | 1998-08-19 | 鞠庆海 | Dual-purpose drilling broaching bit controlled by centrifugal wings |
| CN2417283Y (en) * | 2000-03-22 | 2001-01-31 | 卫龙武 | Drill bit with changeable diameter for pouring pile hole |
| CN201635662U (en) * | 2010-04-14 | 2010-11-17 | 方远建设集团股份有限公司 | Combined drill bit used for cast-in place pile |
| CN202000899U (en) * | 2011-03-28 | 2011-10-05 | 郑州市第一建筑工程集团有限公司 | Drill bit of rotary drilling rig |
| CN202578513U (en) * | 2012-05-02 | 2012-12-05 | 上海智平基础工程有限公司 | Filling pile aiguille |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804059A (en) * | 2014-12-31 | 2016-07-27 | 上海市机械施工集团有限公司 | Cast-in-situ bored pile hole-forming device and method |
| CN105804059B (en) * | 2014-12-31 | 2018-03-02 | 上海市机械施工集团有限公司 | Drilling pouring pile hole device and method |
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN107542407A (en) * | 2017-09-28 | 2018-01-05 | 徐国峰 | A kind of cement surface drill bit |
| CN109083136A (en) * | 2018-06-29 | 2018-12-25 | 广东工业大学 | A kind of anti-overflowing variable section cement-soil stirring pile crown |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20140709 |