CN204002570U - Weldering teeth drill bit for the boring of bridge foundation large diameter pile - Google Patents
Weldering teeth drill bit for the boring of bridge foundation large diameter pile Download PDFInfo
- Publication number
- CN204002570U CN204002570U CN201420292377.4U CN201420292377U CN204002570U CN 204002570 U CN204002570 U CN 204002570U CN 201420292377 U CN201420292377 U CN 201420292377U CN 204002570 U CN204002570 U CN 204002570U
- Authority
- CN
- China
- Prior art keywords
- cutter
- meld
- tooth
- composite member
- cutter head
- 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.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 description 7
- 231100000241 scar Toxicity 0.000 description 6
- 238000013467 fragmentation Methods 0.000 description 5
- 238000006062 fragmentation reaction Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of weldering teeth drill bit for the boring of bridge foundation large diameter pile, comprise some meld tooth cutters and hob holder composite member and cutter head, also comprise two single fulcrum insert cutters, on cutter head, be provided with two slag suction mouths, some backing plates that are furnished with in the bottom angled of this cutter head, each single fulcrum insert cutter and meld tooth cutter and hob holder composite member are welded under corresponding backing plate, the rolling cross section of each meld tooth cutter and hob holder composite member and the axes intersect of cutter head form a conical rolling cross section, on each meld tooth cutter and hob holder composite member, the axis of hobboing cutter cutter shaft and the angle between cutter hub bus reduce to its surrounding successively along the axle center of cutter head, on single fulcrum insert cutter and meld tooth cutter and hob holder composite member, the axis of hobboing cutter cutter shaft and the intersection point of cutter hub bus intersect on the axis of cutter head and form the broken rock of pure rolling formula.The utility model can effectively improve the efficiency of rock breaking capacity and the deslagging of drill bit, is applicable in all kinds of rockhole.
Description
Technical field
The utility model belongs to bridge apparatus field, relates in particular to a kind of weldering teeth drill bit for the boring of bridge foundation large diameter pile.
Background technology
In major diameter bridge foundation construction, weldering tooth rolling drill bit is mainly comprised of the meld tooth cutter of several same forms and hob holder composite member and a cutter head, on cutter head, be provided with a slag suction mouth, each meld tooth cutter and hob holder composite member are successively on the parallel panel that is arranged on cutter head bottom, and hobboing cutter rolls back and forth and forms plain base rolling cross section.This structure mainly has the following disadvantages: one, because the form of meld tooth cutter and hob holder composite member is identical and be arranged in parallel, in the situation that guaranteeing that its bottom surface is coplanar, on drill bit, the intersection point of the axis of each hobboing cutter cutter shaft and cutter hub bus is not on the axis of cutter head, cause the cone angle of hobboing cutter bus to occur super top or contracting top phenomenon, stressed more complicated in rock break-off process, rock can not well roll brokenly; Two, the absorption dynamics of single suction cinder notch is limited, and the rock slag getting off through hobboing cutter fragmentation in construction can not be discharged by this slag suction mouth in time, causes rock slag to repeat broken, has affected the drilling efficiency of drill bit; Three, parallel bottom surface can only make to be broken scar and be subject to the pressure downward of cutter tooth, cause by broken scar be subject to force direction single, cannot quick crashing, cause the construction speed of whole Foundation Design slow, the foundation construction cycle is long.
Utility model content
The purpose of this utility model is to provide that a kind of efficiency of slagging tap is high, breaking capacity strong, the weldering teeth drill bit for the boring of bridge foundation large diameter pile of pure rolling formula.
This weldering teeth drill bit for the boring of bridge foundation large diameter pile that the utility model provides, comprise some meld tooth cutters and hob holder composite member and cutter head, this drill bit also comprises that symmetry is arranged on two single fulcrum insert cutters at center, described cutter head below, on described cutter head, be provided with two slag suction mouths, some backing plates that are furnished with in the bottom angled of this cutter head, described in each, single fulcrum insert cutter and meld tooth cutter and hob holder composite member are welded under corresponding backing plate, the rolling cross section of each meld tooth cutter and hob holder composite member and the axes intersect of cutter head form a conical rolling cross section, on each meld tooth cutter and hob holder composite member, the axis of hobboing cutter cutter shaft and the angle between cutter hub bus reduce to its surrounding successively along the axle center of cutter head, on described single fulcrum insert cutter and meld tooth cutter and hob holder composite member, the axis of hobboing cutter cutter shaft and the intersection point of cutter hub bus intersect at and on the axis of cutter head, form the broken rock of pure rolling formula.
For reducing the wearing and tearing of rock stratum tool setting disc perimeter, on all side coamings of described cutter head, be welded with wear rib.
For making the utility model, can better realize pure rolling, be positioned at the axis of hobboing cutter cutter shaft on the meld tooth cutter of described cutter head bottom inside and hob holder composite member and the angle between cutter hub bus and be not more than 14 °, the axis and the angle between cutter hub bus that are positioned at hobboing cutter cutter shaft on the meld tooth cutter of described cutter head bottom outside and hob holder composite member are not less than 4 °.
Compared with prior art, the utlity model has several lower advantages:
1, by different angles cutter hub bus on each meld tooth cutter and hob holder composite member, intersection point assurance and axis each corresponding hobboing cutter cutter shaft all intersects on the axis of cutter head, make hobboing cutter with the broken rock of mode of pure rolling, force-bearing situation while having improved the broken rock of hobboing cutter, rig moment of torsion has reduced 30%-50%, extend the application life of hobboing cutter, improved the efficiency of breaking rock of drill bit, improved the overall performance of rig.
2, by the center at cutter head, adopt two slag suction mouths, when strengthening the comprehensive absorption dynamics of slag suction mouth, the scope that has also guaranteed each slag suction mouth absorption is larger, the rock slag getting off through hobboing cutter fragmentation in construction can be discharged by these two slag suction mouths in time uniformly, reduce rock slag and repeat fragmentation, guaranteed the drilling efficiency of drill bit.
3, by meld tooth cutter and hob holder composite member being welded on the backing plate that cutter head bottom angled arranges, form a conical rolling cross section, make to be broken scar when being subject to the positive pressure of drill bit bottom hobboing cutter cutter tooth, also can be subject to the lateral shear power of drill bit side hobboing cutter cutter tooth, allow and be subject to multidirectional crushing force by broken scar, the breaking capacity of drill bit is improved, and then improve the construction speed of whole Foundation Design, greatly shorten the foundation construction cycle.
The utility model can effectively improve the efficiency of rock breaking capacity and the deslagging of drill bit, is applicable in all kinds of rockhole.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the simplified structure schematic diagram of Fig. 1.
Fig. 3 is the contrast schematic diagram of the utility model meld tooth cutter and existing meld tooth cutter.
The specific embodiment
From Fig. 1 and Fig. 2, can find out, this weldering teeth drill bit for the boring of bridge foundation large diameter pile of the utility model, comprise two single fulcrum insert cutters 1, some meld tooth cutters and hob holder composite member 2 and cutter head 3, on cutter head 3, be provided with two slag suction mouths 31, some backing plates 32 that are furnished with in the bottom angled of this cutter head 3, each single fulcrum insert cutter 1 and meld tooth cutter and hob holder composite member 2 are welded on corresponding backing plate 32 times, the rolling cross section of each meld tooth cutter and hob holder composite member 2 and the axes intersect of cutter head 3 form a conical rolling cross section, on each meld tooth cutter and hob holder composite member 2, the axis of hobboing cutter cutter shaft and the angle between cutter hub bus reduce to its surrounding successively along the axle center of cutter head 3, on single fulcrum insert cutter 1 and meld tooth cutter and hob holder composite member 2, the axis of hobboing cutter cutter shaft and the intersection point of cutter hub bus intersect on the axis of cutter head 3 and form the broken rock of pure rolling formula.
From Fig. 1, it can also be seen that, at the utility model cutter head, within 3 weeks, on side coaming, be welded with wear rib 33.
In the utility model, be positioned at the axis of hobboing cutter cutter shaft on the meld tooth cutter of cutter head 3 bottom inside and hob holder composite member 2 and the angle between cutter hub bus and be not more than 14 °, the axis and the angle between cutter hub bus that are positioned at hobboing cutter cutter shaft on the meld tooth cutter of cutter head 3 bottom outside and hob holder composite member 2 are not less than 4 °.
Motion process of the present utility model is as follows:
1, be positioned at cutter head 3 bottom centre two single fulcrum insert cutters 1 insert cutter with by the upper surface of broken scar, contacted, it is applied to a pressure downward, make it progressively broken downwards; Along with the rolling of drill bit, the rock slag after fragmentation is discharged from each slag suction mouth 31.
2, along with the creeping into of drill bit, be positioned at each meld tooth cutter of side, circular cone rolling cross section and the meld tooth cutter of hob holder composite member 2 and contacted by the inner surface of broken scar, it is applied to a lateral shear power, make its both sides progressively broken; Along with the rolling of drill bit, the rock slag after fragmentation is discharged from each slag suction mouth 31.
Work flow of the present utility model is as follows:
1, weldment: discharge → blanking → welding → roughing → fine finishining → check
2, forging: discharge → preheating → forging molding → roughing → heat treatment → fine finishining → check
3, foundry goods: moulding → smelting → casting → roughing → heat treatment → fine finishining → check
4, the weldment being up to the standards, forging and foundry goods → assembling → final inspection → finished product.
Claims (3)
1. the weldering teeth drill bit for bridge foundation large diameter pile boring, comprise some meld tooth cutters and hob holder composite member (2) and cutter head (3), it is characterized in that: this drill bit also comprises that symmetry is arranged on two single fulcrum insert cutters (1) at center, described cutter head (3) below, on described cutter head (3), be provided with two slag suction mouths (31), in the bottom angled of this cutter head (3), be furnished with some backing plates (32), described in each, single fulcrum insert cutter (1) and meld tooth cutter and hob holder composite member (2) are welded under corresponding backing plate (32), the axes intersect of the rolling cross section of each meld tooth cutter and hob holder composite member (2) and cutter head (3) forms a conical rolling cross section, the axis of the upper hobboing cutter cutter shaft of each meld tooth cutter and hob holder composite member (2) and the angle between cutter hub bus reduce to its surrounding successively along the axle center of cutter head (3), the upper axis of hobboing cutter cutter shaft of described single fulcrum insert cutter (1) and meld tooth cutter and hob holder composite member (2) and the intersection point of cutter hub bus intersect on the axis of cutter head (3) and form the broken rock of pure rolling formula.
2. the weldering teeth drill bit for the boring of bridge foundation large diameter pile according to claim 1, is characterized in that: on all side coamings of described cutter head (3), be welded with wear rib (33).
3. the weldering teeth drill bit for bridge foundation large diameter pile boring according to claim 1, it is characterized in that: be positioned at the axis of the upper hobboing cutter cutter shaft of the meld tooth cutter of described cutter head (3) bottom inside and hob holder composite member (2) and the angle between cutter hub bus and be not more than 14 °, be positioned at the meld tooth cutter of described cutter head (3) bottom outside and axis and the angle between cutter hub bus of the upper hobboing cutter cutter shaft of hob holder composite member (2) are not less than 4 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292377.4U CN204002570U (en) | 2014-06-04 | 2014-06-04 | Weldering teeth drill bit for the boring of bridge foundation large diameter pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292377.4U CN204002570U (en) | 2014-06-04 | 2014-06-04 | Weldering teeth drill bit for the boring of bridge foundation large diameter pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002570U true CN204002570U (en) | 2014-12-10 |
Family
ID=52042590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420292377.4U Expired - Fee Related CN204002570U (en) | 2014-06-04 | 2014-06-04 | Weldering teeth drill bit for the boring of bridge foundation large diameter pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002570U (en) |
-
2014
- 2014-06-04 CN CN201420292377.4U patent/CN204002570U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 |