CN205445472U - A drill bit that is used for drilling variable aperture stake hole - Google Patents
A drill bit that is used for drilling variable aperture stake hole Download PDFInfo
- Publication number
- CN205445472U CN205445472U CN201620229634.9U CN201620229634U CN205445472U CN 205445472 U CN205445472 U CN 205445472U CN 201620229634 U CN201620229634 U CN 201620229634U CN 205445472 U CN205445472 U CN 205445472U
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- China
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- drill bit
- pipe
- variable aperture
- bit
- stake holes
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Abstract
The utility model provides a drill bit that is used for drilling variable aperture stake hole, including the drill bit body, fixed surface is provided with a plurality of otic placodes outside the upper end of drill bit body, all is provided with down the connecting rod on every otic placode, and the one end of lower connecting rod is articulated with the otic placode, and the other end is articulated with ream bit, is provided with the reaming hobbing cutter on ream bit's the lower terminal surface, still be provided with the pneumatic cylinder on the drill bit body, the piston rod of pneumatic cylinder is articulated with the middle part of lower connecting rod, and the cylinder of pneumatic cylinder is articulated with the lower extreme surface of drill bit body, the lower fixed surface of drill bit body is provided with the hob head, is provided with flat hobbing cutter on the lower terminal surface of hob head. The utility model discloses can realize that the expansion bit becomes the needs of the arbitrary diameter reducing of width of cloth within range drilling, is applicable to the engineering stake hole of the little aperture in upper portion, lower part large aperture.
Description
Technical field
This utility model relates to engineering driller technical field, particularly relates to a kind of drill bit for Drilling variable aperture stake holes.
Background technology
Large aperture mine is when Drilling, bit drilled is usually utilized to go out aperture, after creeping into certain depth, use larger-diameter drill bit instead creep into, this just requires the outer radius variable of drill bit, first first reduces diameter, with the changeover portion less through piling bar external diameter when Drilling, when drill bit enters into the bigger straightway of lower outer diameter, drill bit opens, and diameter becomes big, creeps into the most again.
As a example by offshore wind generating single-pile foundation hole drill enters, the simple pendulum arm structure of the external commonly used hydraulic oil cylinder driving of similar expansion bit, the end of swing arm arranges that cutter is as reaming bit, the usual uniform multiple oscillating arm mechanisms of a drill bit, the reducing of drill bit can be realized when all oscillating arm mechanisms synchronous hunting, but the reaming bit part of this diameter changeable drill bit can not keep and the translation of drill bit axial line during opening, thus the needs in all apertures in the range of its expansible of same bit drilled can not be accomplished, expansion bit can only meet the needs in a kind of reducing hole in theory.
Utility model content
The purpose of this utility model is to provide a kind of drill bit for Drilling variable aperture stake holes, it is possible to realize the needs of arbitrary diameter reducing boring in the range of expansion bit luffing, it is adaptable to small-bore, top, bottom wide-aperture engineering stake holes.
For achieving the above object, this utility model adopts the following technical scheme that
A kind of drill bit for Drilling variable aperture stake holes, including drill body, the upper end outer surface of described drill body is fixedly installed many auricular appendages plate, it is provided with lower link on every auricular appendage plate, one end of lower link is hinged with otic placode, the other end is hinged with reaming bit, and the lower surface of reaming bit is provided with reaming hobboing cutter；Being additionally provided with hydraulic cylinder on described drill body, the piston rod of hydraulic cylinder is hinged with the middle part of lower link, and the cylinder barrel of hydraulic cylinder is hinged with the lower end outer surface of drill body；The lower surface of drill body is fixedly installed hob head, and the lower surface of hob head is provided with flat hobboing cutter.
It is additionally provided with connecting rod on described otic placode, one end of upper connecting rod is hinged with otic placode, the other end is connected with reaming bit, the length of upper connecting rod is equal with the length of lower link, and upper connecting rod be arranged in parallel with lower link, described upper connecting rod, lower link, reaming bit and drill body composition parallel-ordinal shift structure.
Described otic placode has fourth officer, is uniformly arranged along drill body circumference.
Described drill body is hollow structure, is provided with scum pipe in hollow structure, and the bottom of described scum pipe connects dreg inhaling pipe, and dreg inhaling pipe is arranged in hob head.
Described dreg inhaling pipe upper end diameter is equal with the internal diameter of scum pipe, and under dreg inhaling pipe, end section is long waist shaped structure, and described long waist shaped is convex circular sliding slopes beyond limit, two opposite sides, and another both sides are the square of straight line.
Described dreg inhaling pipe uses arranged off-centre.
Being provided with air inlet pipe outside the upper end of described scum pipe, air inlet pipe is connected with scum pipe.
Described scum pipe be arranged in parallel with air inlet pipe, and the outer surface of scum pipe contacts with the outer surface of air inlet pipe, and the face that air inlet pipe and scum pipe contact is provided with air inlet.
It is provided with compressed air blender in described scum pipe, outside scum pipe, is arranged with sealing ring.
This utility model drives lower link, upper connecting rod and reaming bit action by adjusting the flexible of hydraulic cylinder, it is achieved the needs of arbitrary diameter reducing boring in the range of expansion bit luffing；Flat hobboing cutter is used for rock or the soil layer in Drilling drill bit front, reaming hobboing cutter is used for the rock around Drilling drill bit or soil layer, rock and slurry mixture that Drilling goes out discharge drill bit from dreg inhaling pipe and scum pipe under compressed-air actuated effect, the design of dreg inhaling pipe and scum pipe well solves the problem that existing diameter-enlarging drill bit cannot discharge rock slag, make row's rock slag of the present utility model in hgher efficiency, can be used for small-bore, any top, the Drilling of bottom wide-aperture engineering stake holes.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model；
Fig. 2 is hobboing cutter layout drawing of the present utility model.
Detailed description of the invention
As shown in Figures 1 and 2, this utility model includes drill body 1, the upper end outer surface of drill body 1 is fixedly installed some auricular appendage plates 2, some auricular appendage plates 2 are uniformly arranged along the circumference of drill body 1, it is respectively connected with connecting rod 3 and lower link 6 on every auricular appendage plate 2, one end of upper connecting rod 3 and lower link 6 is all hinged with otic placode 2, the other end is all hinged with reaming bit 4, the length of upper connecting rod 3 is equal with the length of lower link 6, and upper connecting rod 3 be arranged in parallel with lower link 6, ensure the central axis of reaming bit 4 all the time with the centerline axis parallel of drill body 1, upper connecting rod 3, otic placode 2, lower link 6 and reaming bit 4 form parallel-ordinal shift structure, in the present embodiment, use four groups of parallel four-bar linkages, four groups of parallel-ordinal shift structures are uniformly arranged along the circumference of drill body 1；Many group hydraulic cylinders 5 it are additionally provided with on drill body 1, many group hydraulic cylinders 5 are uniformly arranged along the circumference of drill body 1, often the cylinder barrel of group hydraulic cylinder 5 is all hinged with the lower end outer surface of drill body 1, the piston rod of hydraulic cylinder 5 is hinged with the middle part of lower link 6, parallel-ordinal shift structure moves under the effect of hydraulic cylinder 5, thus drive reaming bit 4 to open, realize the reducing of drill bit, reaming hobboing cutter 7 it is provided with on the lower surface of reaming bit 4, reaming hobboing cutter 7 utilizes and rolls acting, thus rock or soil layer are carried out Drilling.The structure of reaming bit 4 and reaming hobboing cutter 7 is prior art, repeats no more.
The lower surface of drill body 1 is fixedly installed hob head 8, and the lower surface of hob head 8 is provided with flat hobboing cutter 9, and flat hobboing cutter 9 is used for rock or the soil layer in Drilling drill bit front, and reaming hobboing cutter 7 is used for the rock around Drilling drill bit or soil layer.
Drill body 1 is hollow structure, scum pipe 11 it is provided with in hollow structure, air inlet pipe 12 it is provided with outside the upper end of scum pipe 11, air inlet pipe 12 is connected with scum pipe 11, in the present embodiment, scum pipe 11 be arranged in parallel with air inlet pipe 12, the outer surface of scum pipe 11 contacts with the outer surface of air inlet pipe 12, it is provided with air inlet on the face that air inlet pipe 12 and scum pipe 11 contact, air inlet pipe 12 is for providing compressed air for drill bit, thus the rock slag sucking-off that bit drilled is gone out, the bottom of scum pipe 11 connects dreg inhaling pipe 10, dreg inhaling pipe 10 is arranged in hob head 8, dreg inhaling pipe 10 upper end diameter is equal with the internal diameter of scum pipe 11, the lower end of dreg inhaling pipe 10 is long waist shaped structure, long waist shaped is the square of convex circular sliding slopes beyond limit, two opposite sides.
10 times end sections of dreg inhaling pipe are long waist shaped structure, and long waist shaped structure is convex circular sliding slopes beyond limit, two opposite sides, and another both sides are the square of straight line, and dreg inhaling pipe 10 uses arranged off-centre, and rock slag, under compressed-air actuated effect, discharges drill bit through dreg inhaling pipe 10 and scum pipe 11.In the present embodiment, being provided with compressed air blender 14 in scum pipe 11, be arranged with sealing ring 13 outside scum pipe 11, compressed air blender 14 is the ad hoc structure of gas lift reverse circulation well-flushing mode, for existing apparatus, repeats no more.
This utility model before operation, first injects water or mud in stake holes, makes bit operation in water or in mud, it is not necessary to additionally to arrange water injection pipe for drill bit；Operationally, flat hobboing cutter 9 carries out forward direction Drilling to stake holes, and the piston rod of hydraulic cylinder 5 stretches, and in drive, connecting rod 3 and lower link 6 move, thus drive reaming bit 4 to flex outward, thus realize the reducing of drill bit, and reaming hobboing cutter 7 is for carrying out expanding to stake holes；Rock and slurry mixture that Drilling goes out discharge drill bit from dreg inhaling pipe 10 and scum pipe 11 under compressed-air actuated effect, and row's rock slag of the scum pipe 10 of arranged off-centre is in hgher efficiency.
This utility model drives lower link 6, upper connecting rod 3 and reaming bit 4 action by adjusting the flexible of hydraulic cylinder 5, realize the needs of arbitrary diameter boring in the range of expansion bit luffing, row's rock slag efficiency is high simultaneously, can be used for small-bore, any top, the Drilling of bottom wide-aperture engineering stake holes.
Claims (9)
1. the drill bit for Drilling variable aperture stake holes, including drill body, the upper end outer surface of described drill body is fixedly installed many auricular appendages plate, it is provided with lower link on every auricular appendage plate, one end of lower link is hinged with otic placode, the other end is hinged with reaming bit, and the lower surface of reaming bit is provided with reaming hobboing cutter；Being additionally provided with hydraulic cylinder on described drill body, the piston rod of hydraulic cylinder is hinged with the middle part of lower link, and the cylinder barrel of hydraulic cylinder is hinged with the lower end outer surface of drill body；The lower surface of drill body is fixedly installed hob head, and the lower surface of hob head is provided with flat hobboing cutter.
A kind of drill bit for Drilling variable aperture stake holes, it is characterized in that: on described otic placode, be additionally provided with connecting rod, one end of upper connecting rod is hinged with otic placode, the other end is connected with reaming bit, the length of upper connecting rod is equal with the length of lower link, and upper connecting rod be arranged in parallel with lower link, described upper connecting rod, lower link, reaming bit and otic placode composition parallel-ordinal shift structure.
A kind of drill bit for Drilling variable aperture stake holes, it is characterised in that: described otic placode has fourth officer, is uniformly arranged along drill body circumference.
A kind of drill bit for Drilling variable aperture stake holes, it is characterised in that: described drill body is hollow structure, is provided with scum pipe in hollow structure, and the bottom of described scum pipe connects dreg inhaling pipe, and dreg inhaling pipe is arranged in hob head.
A kind of drill bit for Drilling variable aperture stake holes, it is characterized in that: described dreg inhaling pipe upper end diameter is equal with the internal diameter of scum pipe, under dreg inhaling pipe, end section is long waist shaped structure, described long waist shaped is convex circular sliding slopes beyond limit, two opposite sides, and another both sides are the square of straight line.
A kind of drill bit for Drilling variable aperture stake holes, it is characterised in that: described dreg inhaling pipe uses arranged off-centre.
A kind of drill bit for Drilling variable aperture stake holes, it is characterised in that: being provided with air inlet pipe outside the upper end of described scum pipe, air inlet pipe is connected with scum pipe.
A kind of drill bit for Drilling variable aperture stake holes, it is characterized in that: described scum pipe be arranged in parallel with air inlet pipe, and the outer surface of scum pipe contacts with the outer surface of air inlet pipe, the face that air inlet pipe and scum pipe contact is provided with air inlet.
A kind of drill bit for Drilling variable aperture stake holes, it is characterised in that: it is provided with compressed air blender in described scum pipe, outside scum pipe, is arranged with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229634.9U CN205445472U (en) | 2016-03-24 | 2016-03-24 | A drill bit that is used for drilling variable aperture stake hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229634.9U CN205445472U (en) | 2016-03-24 | 2016-03-24 | A drill bit that is used for drilling variable aperture stake hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205445472U true CN205445472U (en) | 2016-08-10 |
Family
ID=56573947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620229634.9U Withdrawn - After Issue CN205445472U (en) | 2016-03-24 | 2016-03-24 | A drill bit that is used for drilling variable aperture stake hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205445472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625947A (en) * | 2016-03-24 | 2016-06-01 | 平煤建工集团特殊凿井工程有限公司 | Drill bit for drilling variable-aperture pile holes |
-
2016
- 2016-03-24 CN CN201620229634.9U patent/CN205445472U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625947A (en) * | 2016-03-24 | 2016-06-01 | 平煤建工集团特殊凿井工程有限公司 | Drill bit for drilling variable-aperture pile holes |
| CN105625947B (en) * | 2016-03-24 | 2018-12-25 | 平煤建工集团特殊凿井工程有限公司 | A kind of drill bit for Drilling variable aperture stake holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160810 Effective date of abandoning: 20181225 |
|
| AV01 | Patent right actively abandoned |