CN204343984U - A kind of convolution drill bit of drilling machine with pinch roller - Google Patents
A kind of convolution drill bit of drilling machine with pinch roller Download PDFInfo
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- CN204343984U CN204343984U CN201420729613.4U CN201420729613U CN204343984U CN 204343984 U CN204343984 U CN 204343984U CN 201420729613 U CN201420729613 U CN 201420729613U CN 204343984 U CN204343984 U CN 204343984U
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- drill bit
- pinch roller
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- drilling machine
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Abstract
The utility model belongs to the technical field of Bored Pile Foundation drilling construction drill bit, for changing the problem of drilling construction technique when passing longer layer of sand and shale layer when solving drilled pile drilling construction, provide a kind of convolution drill bit of drilling machine with pinch roller, comprise drill main body, drill bit stablizes leg and be welded on the alloy steel tooth of drill main body bottom, the arranged outside that drill bit stablizes leg has drill bit pinch roller, the center line of drill bit pinch roller and bit central line parallel, drill bit pinch roller outer rim to the maximum normal distance of drill main body center line and the radius of drilled pile consistent.The utility model structure is simple, cheap, and greatly reduces working procedure and workload, shortens the drilled pile pore-forming time, adds the compactness of the hole wall soil body, improve mud off quality, effectively prevent coarse sands layer collapse hole.
Description
Technical field
The utility model belongs to the technical field of Bored Pile Foundation drilling construction drill bit, is specifically related to a kind of convolution drill bit of drilling machine with pinch roller.
Background technology
Flourish along with China's infrastructure, building construction technology is also constantly advancing, and Bored Pile Foundation drilling construction technology is also towards darker more difficult future development.Drilling construction equipment can be divided into according to the technique of pore-forming: positive and negative convolution rig, down-the-hole drill, diving drill machine, jumbolter, rotary drilling rig, percussive drill etc.Different rig types is selected for different geological condition, but boundary not clear and definite when selecting.Same geological type can select multiple rig to construct, but changes in the Bored Pile Foundation work progress differed greatly in some stratum geology, selects a kind of rig to be difficult to successfully pore-forming.For guarantee drilling construction is smooth and hole quality, the method dissimilar rig can only being selected to creep into for Different Strata under technical condition restriction is carried out.But wasting time and energy owing to changing rig, and mud off is damaged, being easy to cause collapse hole when changing in rig process and after replacing rig, the mode of creeping into is changed.So above-mentioned construction method requires further improvement perfect.
Certain municipal bridge engineering that such as applicant undertakes the construction of, bored piles footpath 2m, effective length 70m in water, at the bottom of stake, elevation reaches-71m, is each passed through layer of sand in 10m clay layer, 30m, 20m completely decomposed silty, the weak weathering silty of 10m.Creeping in shale layer process when selecting separately common circulation drill to construct, because mud stone is abnormal hard before creeping into, very easily softening by mud dipping after disturbance, produce material as a form of gel and be attached to drill bit, be deposited at the bottom of hole and be difficult to discharge boring mud; During layer of sand, produce negative pressure when the vibration produced during reverse circulation drilling construction, suction mud plasma discharge and easily cause layer of sand to cave in creeping into when selecting separately clean-out machine to construct.Coordinated the construction method of drilling and forming hole with reacting cycle by scheme comparison plan employing direct circulation, but direct circulation coordinates with reacting cycle the conventional construction method of drilling and forming hole can not meet on-site actual situations and keeps the successional requirement of drilling construction, mainly there is following problem:
1, change rig to limit by place.Particularly in water, Drilling Platform for Bored Pile Construction size is limited, drilling-machine shifter relative difficulty, and brill carried by rig, displacement, again in place, lower brill constructing operation are complicated.
2, replacing rig expends time in quite to grow and easily causes collapse hole.Due to rig carry brill, displacement, again in place, again going down process need significant period of time, because mud stone is darker, at distance aperture 70m right position, the minimum needs of whole Renewal process 10 hours, in the meantime due to mud sediment, change brill time disturbance, easily there is collapse hole in layer of sand in groundwater seepage, brings sizable danger to construction.
The destruction of mud off is caused when 3, again creeping into.Due to the change of more bit change, mud circulation mode, the mud off Quality Down in hole is serious.Easy generation collapse hole, brings sizable difficulty to construction.
4, mud waste is serious.Can carry out as adopted separately direct circulation drilling construction mud being separated, retaining premium mud, reuse in next root drilled pile construction process, but after adopting direct circulation to coordinate the construction method of drilling and forming hole with reacting cycle, quality of mud fluid does not meet borehole wall-protection needs again, mud waste is serious.
5, make troubles to engineering cost accounting.Due to the construction method adopting direct circulation to coordinate drilling and forming hole with reacting cycle, various drilling machine construction cost is all variant, and the actual amount of finishing the work of each equipment cannot divide, and engineering cost calculation work brings difficulty.And due to two drilling machine construction one piles, cause machine wastes, increase construction cost.
Summary of the invention
The utility model is the technical problem through conversion drilling construction technique when longer layer of sand and shale layer when solving drilled pile drilling construction, provides a kind of convolution drill bit of drilling machine with pinch roller.
The technical solution adopted in the utility model is as follows:
A kind of convolution drill bit of drilling machine with pinch roller, comprise drill main body, drill bit stablizes leg and be welded on the alloy steel tooth of drill main body bottom, it is characterized in that: the arranged outside that drill bit stablizes leg has drill bit pinch roller, the center line of drill bit pinch roller and bit central line parallel, drill bit pinch roller outer rim to the maximum normal distance of drill main body center line and the radius of drilled pile consistent.
The position of stablizing leg arranged outside drill bit pinch roller is welded with reinforcement steel plate, strengthens Plate Welding on upper and lower two surfaces of stable leg, and outwards has extension, and drill bit pinch roller is arranged on upper and lower two and strengthens between the steel plate section of stretching out.
Two strengthen being fixed with the rotating shaft of installing drill bit pinch roller between steel plate.
Drill bit pinch roller inner distance drill bit stablizes leg 3 ~ 4cm.
Stablize leg arranged outside 2 groups of drill bit pinch rollers.
The beneficial effects of the utility model:
1. the utility model by setting up drill bit pinch roller on convolution drill bit of drilling machine, and during drill bit rotational, drill bit pinch roller contacts with hole wall, and the pinch roller rolling compacting hole wall soil body, adds the compactness of the hole wall soil body, improves mud off quality, prevents coarse sands layer collapse hole.
2. the utility model only needs to adopt separately reacting cycle construction method can complete stratum geology to change the Bored Pile Foundation construction differed greatly, without the need to changing rig, shortening the pore-forming time, eliminating multinomial collapse hole hidden danger, reducing mud waste, avoid engineering accounting difficulty, reducing construction cost.
3. drill bit pinch roller time processing of the present utility model is shaping, and structure is simple, be easy to processing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the front view of the utility model drill bit pinch roller;
Fig. 3 is the top view of the utility model drill bit pinch roller;
In figure: 1-drill main body, 2-alloy steel tooth, 3-stablizes leg, and 4-strengthens steel plate, 5-rotating shaft, 6-drill bit pinch roller.
Detailed description of the invention
As Fig. 1, 2, shown in 3, a kind of convolution drill bit of drilling machine with pinch roller, comprise drill main body 1, be welded on the alloy steel tooth 2 of drill main body 1 bottom, drill bit stablizes leg 3, strengthen steel plate 4 and drill bit pinch roller 6, described stable leg 3 arranged outside has drill bit pinch roller 6, be welded with in the position of stable leg 3 arranged outside drill bit pinch roller 6 and strengthen steel plate 4, strengthen steel plate 4 and be welded on stable leg about 3 two surfaces, and outwards have extension, two strengthen being fixed with rotating shaft 5 between steel plate 4 section of stretching out, drill bit pinch roller 6 is arranged in rotating shaft 5, the center line of drill bit pinch roller 6 and bit central line parallel, drill bit pinch roller 6 outer rim to the maximum normal distance of drill main body center line and the radius of drilled pile consistent.
For preventing soil solidifying, affecting pinch roller rolling, drill bit pinch roller 6 inner distance drill bit stablizes leg 3 ~ 4cm.
For better increasing the compactness of the hole wall soil body, improving mud off quality, stablizing leg 3 arranged outside two groups of drill bit pinch rollers 6.
The operating principle of drill bit pinch roller: drilling construction adopts separately reacting cycle construction method, soil disturbance is pulverized by the alloy steel tooth by drill bit bottom when creeping into, and by reacting cycle mode by outside mud evacuation aperture, drill bit can sink, creep into.Increase pinch roller and can improve compactness by the compacting hole wall soil body on the one hand, the mode of rolling on the other hand can not damage retaining wall quality.Creep into during middle sand bed because pinch roller is that rolling friction reduces disturbance to rock stratum, and make mud clamp-on layer of sand gap by pinch roller extruding, improve mud off effect; When being drilled into shale layer, because the soil body meets the after-tack of water soaking, inside and outside hole wall, very easily cause collapse hole under the effect of soil pressure difference, after setting up drill bit pinch roller, contacted with hole wall by the pinch roller outside stable leg, the rolling compacting hole wall soil body, improves soil body compactness, adds soil strength.In drill bit drilling process, drill bit pinch roller contacts with hole wall, and by the rolling compacting soil body of pinch roller, the earth of unnecessary attachment, by gap between pinch roller and stable leg, pushes back hole wall again by the rotation of pinch roller.Drill bit continues to creep into, and forms continuous, stable, smooth, closely knit retaining wall.
After using drill bit pinch roller, in hole, mud off quality is greatly enhanced, and collapse hole frequency obviously reduces, and ensure that pile quality.Shorten the pore-forming time, eliminate multinomial collapse hole hidden danger, reduce mud waste, avoid engineering accounting difficulty, reduce construction cost.
Drill bit pinch roller time processing is shaping, and structure is simple, be easy to processing.As long as drill bit does not damage, just can repeatedly use.Compared with replacing rig, cheap, and greatly reduce working procedure and workload, shorten the drilled pile pore-forming time, avoid collapse hole phenomenon, reduce construction safety risk, reduce construction cost, achieve economic benefit.Therefore in drilling construction, have larger practical value, can large-scale popularization application in similar engineering.
Claims (5)
1. the convolution drill bit of drilling machine with pinch roller, comprise drill main body (1), drill bit stablizes leg (3) and be welded on the alloy steel tooth (2) of drill main body (1) bottom, it is characterized in that: the arranged outside that drill bit stablizes leg (3) has drill bit pinch roller (6), the center line of drill bit pinch roller (6) and bit central line parallel, drill bit pinch roller (6) outer rim to the maximum normal distance of drill main body center line and the radius of drilled pile consistent.
2. a kind of convolution drill bit of drilling machine with pinch roller according to claim 1, it is characterized in that: the position of stablizing leg (3) arranged outside drill bit pinch roller (6) is welded with strengthens steel plate (4), strengthen steel plate (4) and be welded on upper and lower two surfaces of stable leg, and outwards having extension, drill bit pinch roller (6) is arranged on upper and lower two and strengthens between steel plate (4) section of stretching out.
3. a kind of convolution drill bit of drilling machine with pinch roller according to claim 2, is characterized in that: two strengthen being fixed with the rotating shaft (5) of installing drill bit pinch roller (6) between steel plate (4).
4. a kind of convolution drill bit of drilling machine with pinch roller according to claim 3, is characterized in that: drill bit pinch roller (6) inner distance drill bit stablizes leg (3) 3 ~ 4cm.
5. a kind of convolution drill bit of drilling machine with pinch roller according to any one of claim 1-4, is characterized in that: stablize leg (3) arranged outside 2 groups of drill bit pinch rollers (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729613.4U CN204343984U (en) | 2014-11-29 | 2014-11-29 | A kind of convolution drill bit of drilling machine with pinch roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729613.4U CN204343984U (en) | 2014-11-29 | 2014-11-29 | A kind of convolution drill bit of drilling machine with pinch roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204343984U true CN204343984U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420729613.4U Active CN204343984U (en) | 2014-11-29 | 2014-11-29 | A kind of convolution drill bit of drilling machine with pinch roller |
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| Country | Link |
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| CN (1) | CN204343984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594926A (en) * | 2019-01-15 | 2019-04-09 | 高九华 | Roll-in cut drill |
| CN111764819A (en) * | 2020-05-11 | 2020-10-13 | 中交路桥建设有限公司 | Buried drilling treatment method for collapsed hole of pile foundation in aeolian sand stratum |
-
2014
- 2014-11-29 CN CN201420729613.4U patent/CN204343984U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594926A (en) * | 2019-01-15 | 2019-04-09 | 高九华 | Roll-in cut drill |
| CN111764819A (en) * | 2020-05-11 | 2020-10-13 | 中交路桥建设有限公司 | Buried drilling treatment method for collapsed hole of pile foundation in aeolian sand stratum |
| CN111764819B (en) * | 2020-05-11 | 2021-12-10 | 中交路桥建设有限公司 | Buried drilling treatment method for collapsed hole of pile foundation in aeolian sand stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200226 Address after: 100036 No. 2, Haidian District, Beijing, Wanshou Road Co-patentee after: Changsha Railway Group Company Limited Luqiao branch Patentee after: The Sixth Engineering Bureau Group Co., Ltd., China Railway Address before: 100036 No. 2, Haidian District, Beijing, Wanshou Road Co-patentee before: CHINA RAILWAY SIXTH GROUP ROAD AND BRIDGE CONSTRUCTION CO., LTD. Patentee before: The Sixth Engineering Bureau Group Co., Ltd., China Railway |
|
| TR01 | Transfer of patent right |