CN203905958U - Integrated double-edged spherical tooth hob used for shield - Google Patents
Integrated double-edged spherical tooth hob used for shield Download PDFInfo
- Publication number
- CN203905958U CN203905958U CN201420362801.8U CN201420362801U CN203905958U CN 203905958 U CN203905958 U CN 203905958U CN 201420362801 U CN201420362801 U CN 201420362801U CN 203905958 U CN203905958 U CN 203905958U
- Authority
- CN
- China
- Prior art keywords
- hob
- cutter
- blade
- teeth
- tooth
- 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
- 238000005552 hardfacing Methods 0.000 claims abstract description 5
- 241001080061 Talides Species 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009933 burial Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses an integrated double-edged spherical tooth hob used for shield. The hob comprises a hob body and a hob ring, wherein the hob body and the hob ring are of an integrated structure; hardfacing layers are arranged on the surfaces of the hob body and the hob ring; a blade is arranged on the edge of the hob ring; a plurality of hob teeth equidistantly distributed along the circumferential direction of the blade are embedded on the blade; the end parts of the hob teeth are exposed out of the blade and are hemispherical; the insert depth of the hob teeth in the blade is 35+/-2mm. Due to the adoption of the technical scheme, the integrated double-edged spherical tooth hob used for shield has the beneficial effects that based on integrated double-edged sharp tooth hobs, the sharp teeth are optimized into circular teeth, so that the burial depth of the hob teeth is increased and the exposure length of the alloy hob teeth out of the blade is shortened, and thus the hob teeth can be effectively prevented from being broken off; the thickness of the hardfacing layers between the hob teeth at the top of the blade is increased, and thus the wear resistance and the impact resistance are improved, the service life of the hob is shortened and the cost is saved.
Description
Technical field
the utility model relates to a kind of shield structure integral type twolip insert cutter, relates in particular to the integral type twolip insert cutter of a kind of major diameter slurry shield tunnel recombination stratum driving use.
Background technology
slurry type shield machine is to stablize excavation face by pressurization muddy water or mud (being generally bentonite suspension), the muddy water that water, clay and additive thereof are mixed, be pressed into muddy water storehouse through conveyance conduit, treat that muddy water is full of whole muddy water storehouse, and there is certain pressure, form mud hydraulic pressure chamber, by pressurization and the pressure holding of muddy water, can maintain the stable of excavated surface.When shield driving, rotary head cuts the native sand getting off and form high concentration muddy water after mixing plant stirs, and delivers to ground sludge-water separating system with fluid mode of movement, again sends quarrel soil, water back to muddy water cabin after separating.
cutterhead is the main working parts of shield structure, and different geo-logical terrains should adopt different cutter head structure forms and cutter to arrange.Existing cutterhead mainly contains split type double-edged hobbing cutter and integral type twolip pointed tooth hobboing cutter.Split type double-edged hobbing cutter adopts cutter ring cutter hub separate type, cutter ring hardness HRc55～57; Blade spacing is 90mm; Blade adopts smooth exterior design, and 8bar air pressure and hydraulic pressure are born in sealing; Starting torque is 33Nm; Radial load is 32T.Integral type twolip pointed tooth hobboing cutter (as accompanying drawing 1 and accompanying drawing 2) adopts cutter ring 2 and cutter hub 1 monolithic construction, cutter ring 2 and cutter hub 1 surface overlaying wearing layer, and its thickness is 2.5mm; Blade 3 is inlayed Talide head, i.e. cutter tooth 4, and the end of cutter tooth 4 is tip, diameter 22mm, length is 40mm, cutter tooth 4 embeds the dark 25mm of blade 3; Radial load 35T, starting torque is 40～44Nm.
there is larger deficiency for Large Slurry Shield machine compound stratum driving in existing split type double-edged hobbing cutter or integral type twolip pointed tooth hobboing cutter, split type double-edged hobbing cutter is in upper soft lower hard formation, active force between hobboing cutter and stratum soft or hard interface is larger, and due to the collision between large particle diameter stone and blade, very easily cause the phenomenon of blade fracture, tipping.Cause cutter bearing skeleton to damage because thrust is excessive, lubricating oil runs off, and mud or disintegrating slag enter cutter bearing, and then it is abnormal to cause hobboing cutter to rotate, and causes hobboing cutter eccentric wear.Its alloy cutter tooth of integral type pointed tooth double-edged hobbing cutter, owing to exceeding the too many and sharp type structure of blade, easily causes alloy cutter tooth to fracture.Above problem reduces hobboing cutter cutter life greatly, changes the cost of charp tool and increases, and wastes time and energy.
Summary of the invention
in order to address the above problem, the purpose of this utility model is to provide a kind of shield structure integral type twolip insert cutter.
in order to reach above object, the technical solution adopted in the utility model is: integral type twolip insert cutter for a kind of shield structure, it comprises cutter hub and cutter ring, cutter hub and cutter ring are integral type structure, cutter hub and cutter ring surface have wearable overlay, and cutter ring outer rim is blade, are embedded with multiple multiple cutters tooth that are circumferentially equally spaced along blade on blade, blade is exposed in the end of cutter tooth, and cutter tooth end is hemispherical.
further, the degree of depth of cutter tooth embedding blade is 35mm ± 2mm.
further, on blade, the hardfacing layer thickness between cutter tooth is 3mm ± 0.2mm.
further, cutter tooth material is Talide.
owing to adopting technique scheme, integral type twolip insert cutter for the utility model shield structure, on the basis of integral type twolip pointed tooth hobboing cutter, pointed tooth is optimized for to knuckle-tooth, increase the buried depth of cutter tooth, reduce alloy cutter tooth and exposed the length of blade, can effectively prevent that cutter tooth from fractureing, thicken the hardfacing layer thickness between the cutter tooth of blade top, improve wear-resistant and shock resistance, greatly reduce hobboing cutter cutter life, saved cost.
Brief description of the drawings
accompanying drawing 1 is the facade structures schematic diagram of integral type twolip pointed tooth hobboing cutter in background technology;
accompanying drawing 2 is the plane structure schematic diagram of integral type twolip pointed tooth hobboing cutter in background technology;
accompanying drawing 3 is the facade structures schematic diagram of the utility model shield structure integral type twolip insert cutter;
accompanying drawing 4 is the plane structure schematic diagram of the utility model shield structure integral type twolip insert cutter.
number in the figure is:
1, cutter hub; 2, cutter ring; 3, blade; 4, cutter tooth; 5, between cog built-up welding.
Detailed description of the invention
below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
can find out from the structural representation of accompanying drawing 3 and accompanying drawing 4, the utility model provides shield structure integral type twolip insert cutter, it comprises cutter hub 1 and cutter ring 2, cutter hub 1 and cutter ring 2 are integral type structure, cutter hub 1 and cutter ring 2 surfaces have wearable overlay, and cutter ring 2 outer rims are blade 3, are embedded with multiple multiple cutters tooth 4 that are circumferentially equally spaced along blade 3 on blade 3, blade 3 is exposed in the end of cutter tooth 4, and cutter tooth 4 ends are hemispherical.
cutter tooth 4 adopts Talide material, and cutter tooth 4 length are 40mm, and the degree of depth that embeds blade 3 is 35mm ± 2mm, is preferably 35mm ± 1mm, is 35mm in the present embodiment.
wearable overlay on blade 3 between cutter tooth 4 is the crown built-up welding 5 shown in accompanying drawing 3 and accompanying drawing 4, and its thickness is 3mm ± 0.2mm, is preferably 3mm ± 0.1mm, is 3mm in the present embodiment.
the lubricating oil of hobboing cutter changes lubricant grease into, reduces because bearing destroys the lubrication oil causing and runs off.
above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (4)
1. an integral type twolip insert cutter for shield structure, it comprises cutter hub (1) and cutter ring (2), described cutter hub (1) and cutter ring (2) are integral type structure, described cutter hub (1) and cutter ring (2) surface have wearable overlay, described cutter ring (2) outer rim is blade (3), on described blade (3), be embedded with multiple multiple cutters tooth (4) that are circumferentially equally spaced along described blade (3), it is characterized in that: blade (3) is exposed in the end of described cutter tooth (4), and cutter tooth (4) end is hemispherical.
2. integral type twolip insert cutter for shield structure according to claim 1, is characterized in that: the degree of depth that described cutter tooth (4) embeds blade (3) is 35mm ± 2mm.
3. integral type twolip insert cutter for shield structure according to claim 1, is characterized in that: the hardfacing layer thickness between the upper cutter tooth (4) of described blade (3) is 3mm ± 0.2mm.
4. integral type twolip insert cutter for shield structure according to claim 1, is characterized in that: described cutter tooth (4) material is Talide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362801.8U CN203905958U (en) | 2014-07-02 | 2014-07-02 | Integrated double-edged spherical tooth hob used for shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362801.8U CN203905958U (en) | 2014-07-02 | 2014-07-02 | Integrated double-edged spherical tooth hob used for shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905958U true CN203905958U (en) | 2014-10-29 |
Family
ID=51780246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420362801.8U Expired - Fee Related CN203905958U (en) | 2014-07-02 | 2014-07-02 | Integrated double-edged spherical tooth hob used for shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203905958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681222A (en) * | 2019-03-05 | 2019-04-26 | 郑州机械研究所有限公司 | One kind inlaying built-up welding convolution hobboing cutter cutter ring |
| CN110924966A (en) * | 2019-12-05 | 2020-03-27 | 湖南师范大学 | Novel shield spherical tooth hob for rock breaking test |
-
2014
- 2014-07-02 CN CN201420362801.8U patent/CN203905958U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681222A (en) * | 2019-03-05 | 2019-04-26 | 郑州机械研究所有限公司 | One kind inlaying built-up welding convolution hobboing cutter cutter ring |
| CN110924966A (en) * | 2019-12-05 | 2020-03-27 | 湖南师范大学 | Novel shield spherical tooth hob for rock breaking test |
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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 |
Granted publication date: 20141029 |