CN110449680A - Cutter and welding method in a kind of cutter head of shield machine - Google Patents
Cutter and welding method in a kind of cutter head of shield machine Download PDFInfo
- Publication number
- CN110449680A CN110449680A CN201910718882.8A CN201910718882A CN110449680A CN 110449680 A CN110449680 A CN 110449680A CN 201910718882 A CN201910718882 A CN 201910718882A CN 110449680 A CN110449680 A CN 110449680A
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- China
- Prior art keywords
- cutter
- cutter head
- shield machine
- welding
- crc
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005219 brazing Methods 0.000 claims abstract description 7
- 239000010935 stainless steel Substances 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
After shield machine enters compound stratum driving, since there are a variety of stratum in face, so that there are certain difficulty for the determination of cutterhead Rational Rotation Speed.Too high or too low cutterhead revolving speed, all making shield machine cutter, there are the risks of too fast damage.The final execution unit that cutter is tunneled as shield machine, cutting-tool's used life will be directly related to the drivage efficiency of shield machine.It is unqualified to solve Welding of cutters, the disadvantages of causing cutter service life short, it is proposed a kind of welding method of cutter in cutter head of shield machine, the step of welding includes: the cylindrical hole handled on cutter head, keeps the diameter of cylindrical hole on cutter head 0.03~0.08mm bigger than the diameter of blade；Cutter head and cutter hub are welded using stainless steel electrode；In the surface overlaying CrC wearing layer of cutter head；CrC wearing plate is welded in the two sides of cutter head；In the front and back built-up welding CrC wearing layer of cutter head；Blade is welded in the cylindrical hole of cutter head using gas brazing.
Description
Technical field
The invention belongs to welding technology field, the welding method of cutter in especially a kind of cutter head of shield machine.
Background technique
Shield tunnel be commonly encountered in severely-weathered stratum tunneling process invaded by gentle breeze or middle weathered stratum formed it is upper
Soft lower hard compound stratum.But it is limited to the spacing of geotechnical boring, so that there are certain blind areas for the geologic section along tunnel.And
General driving speed is very fast when shield machine tunnels in severely-weathered stratum, and cutterhead revolving speed is higher.Therefore, when shield machine is without standard
When abruptly entering compound stratum standbyly, the acute variation on stratum can be on the cutterhead in quick rotation in this face
Cutter applies huge impact load, and the moment of cutter is easily caused to crumble.In addition, when being tunneled in single stratum, shield machine
Boring parameter can be determined by excavation face formation condition.But after shield machine enters compound stratum driving, due to face memory
On a variety of stratum, so that there are certain difficulty for the determination of cutterhead Rational Rotation Speed.Too high or too low cutterhead revolving speed, can all make shield
There are the risks of too fast damage for rounding machine cutter.The final execution unit that cutter is tunneled as shield machine, cutting-tool's used life will be straight
Connect the drivage efficiency for being related to shield machine.
Summary of the invention
The disadvantages of present invention means that solution Welding of cutters is unqualified, causes cutter service life short.In order to achieve the above objectives
The technical solution adopted is as follows:
The step of welding method of cutter in a kind of cutter head of shield machine, the cutter include cutter hub, cutter head and blade, welding
Include:
Step 1. handle cutter head on cylindrical hole, make the diameter of cylindrical hole on cutter head it is bigger than the diameter of blade by 0.03~
0.08mm；
Step 2. uses stainless steel electrode welding cutter head and cutter hub；
Surface overlaying CrC wearing layer of the step 3. in cutter head；
Step 4. welds CrC wearing plate in the two sides of cutter head；
Front and back built-up welding CrC wearing layer of the step 5. in cutter head；
Blade is welded in the cylindrical hole of cutter head by step 6. using gas brazing.
Further, the weld seam between cutter head and the CrC wearing plate has two.
Further, weld seam uses 7018 welding rods, fillet weld height 6mm, 309 surfacing weldings of another weld seam,
Fillet weld height 6mm.
Further, the altitude range that blade exposes cutter hub when welding is 2.5~3mm.
Compared with prior art, the beneficial effects of the present invention are: the cylinder bore diameter of cutter head is than blade cylinder diameter
Big 0.03-0.08mm enables the welding fluid of gas brazing to flow to tool bore bottom, completely welds blade and cutter head real.Due to wearing plate
Layering, material is different, is welded using two different welding rods, welds stronger.The welding of cutter wearing layer is reasonable, extends knife
Have service life, saves the duration for tunnel piercing project, improve efficiency.
Another object of the present invention is to propose the cutter in a kind of cutter head of shield machine, the cutter includes cutter hub, cutter head
And blade, the diameter of cylindrical hole is 0.03~0.08mm bigger than the diameter of blade on cutter head, and cutter hub and cutter head pass through welding rod and weld, knife
Piece is welded in the cylindrical hole of cutter head.
Further, the CrC wearing layer that cutter head upper surface has with a thickness of 3.2mm.
Further, there are CrC wearing plate in cutter head two sides, and the wearing plate has thickness with a thickness of 12mm, cutter head front and back
Degree is the CrC wearing layer of 1.5mm.
Further, the weld seam between cutter head and the CrC wearing plate has two, and a weld seam uses 7018 welding rods, fillet welding
Stitch height 6mm, 309 surfacing weldings of another weld seam, fillet weld height 6mm.
Further, the hardness range of the wearing plate is HRC 50~55.
Further, the material of the blade is hard alloy.
Compared with prior art, beneficial effects of the present invention in a kind of cutter head of shield machine the welding method of cutter it is beneficial
Effect is identical, and details are not described herein.
Detailed description of the invention
Fig. 1 is the cutter structure schematic diagram welded using welding method in the present invention；
Fig. 2 is another viewing angle constructions schematic diagram of cutter.
Cutter head -1, blade -2, gas brazing -3, first surface CrC wearing layer -4, CrC wearing plate -5, second surface CrC
Wearing layer -6, cutter hub -7, the first weld seam -8, the second weld seam -9, third surface C rC wearing layer -10.
Specific embodiment
The present invention proposes a kind of welding method of cutter in cutter head of shield machine, and the cutter includes cutter hub, cutter head and blade,
The step of welding includes:
Step 1. handle cutter head on cylindrical hole, make the diameter of cylindrical hole on cutter head it is bigger than the diameter of blade by 0.03~
0.08mm；
Step 2. uses stainless steel electrode welding cutter head and cutter hub；
Surface overlaying CrC wearing layer of the step 3. in cutter head；
Step 4. welds CrC wearing plate in the two sides of cutter head；
Front and back built-up welding CrC wearing layer of the step 5. in cutter head；
Blade is welded in the cylindrical hole of cutter head by step 6. using gas brazing.
The cutter welded in the present embodiment is the tearing cutter in cutter head of shield machine, and whole outer dimension is after welding
310mm*146mm*76mm, as depicted in figs. 1 and 2, cutter includes the cutter hub 7, cutter head 1 and blade 2 of a height of 180mm, on cutter head 1
The diameter of cylindrical hole is 0.03~0.08mm bigger than the diameter of blade 2, and cutter hub 7 and cutter head 1 are welded by stainless steel electrode, blade 2
It is welded on using gas brazing in the cylindrical hole of cutter head 1, it is 2.5~3mm that blade 2, which exposes the altitude range of cutter hub 1, when welding.Pricker
The solder of weldering is determined according to the base material of blade.The CrC wearing plate 5 that the two sides of cutter head 1 are welded with a thickness of 12mm.Cutter head 1 and CrC
Weld seam between wearing plate 5 has two.Wherein the second weld seam 9 uses 7018 welding rods, and fillet weld height 6mm, the first weld seam 8 is with 309
Surfacing welding, fillet weld height 6mm.The second surface CrC wearing layer 6 that the other two sides of cutter head 1 have with a thickness of 1.5mm, cutter head 1
Surface have first surface CrC wearing layer 4 and third surface C rC wearing layer 10 with a thickness of 3.2mm.
The welding method of blade can also be on the scraper or fish tail knife in cutter head of shield machine in the present invention.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (10)
1. the welding method of cutter in a kind of cutter head of shield machine, the cutter includes cutter hub, cutter head and blade, which is characterized in that
The step of welding includes:
Step 1. handles the cylindrical hole on cutter head, keeps the diameter of cylindrical hole on cutter head 0.03~0.08mm bigger than the diameter of blade；
Step 2. uses stainless steel electrode welding cutter head and cutter hub；
Upper surface built-up welding CrC wearing layer of the step 3. in cutter head；
Step 4. welds CrC wearing plate in the two sides of cutter head；
Front and back built-up welding CrC wearing layer of the step 5. in cutter head；
Blade is welded in the cylindrical hole of cutter head by step 6. using gas brazing.
2. the welding method of cutter in a kind of cutter head of shield machine as described in claim 1, which is characterized in that cutter head and the CrC
Weld seam between wearing plate has two.
3. the welding method of cutter in a kind of cutter head of shield machine as claimed in claim 2, which is characterized in that a weld seam uses
7018 welding rods, fillet weld height 6mm, 309 surfacing weldings of another weld seam, fillet weld height 6mm.
4. the welding method of cutter in a kind of cutter head of shield machine as described in claim 1, which is characterized in that blade exposes when welding
The altitude range of cutter hub is 2.5~3mm.
5. the cutter in a kind of cutter head of shield machine, which is characterized in that the cutter includes cutter hub, cutter head and blade, circle on cutter head
The diameter of post holes is 0.03~0.08mm bigger than the diameter of blade, and cutter hub and cutter head are welded by welding rod, and blade is welded on cutter head
In cylindrical hole.
6. the cutter in a kind of cutter head of shield machine as claimed in claim 5, which is characterized in that cutter head upper surface have with a thickness of
The CrC wearing layer of 3.2mm.
7. the cutter in a kind of cutter head of shield machine as claimed in claim 5, which is characterized in that there are CrC wearing plate, institute in cutter head two sides
Wearing plate is stated with a thickness of 12mm, the CrC wearing layer that cutter head front and back has with a thickness of 1.5mm.
8. the cutter in a kind of cutter head of shield machine as claimed in claim 7, which is characterized in that the hardness range of the wearing plate is
HRC50~55.
9. the cutter in a kind of cutter head of shield machine as claimed in claim 7, which is characterized in that between cutter head and the CrC wearing plate
Weld seam have two, a weld seam uses 7018 welding rods, fillet weld height 6mm, another weld seam 309 surfacing weldings, fillet welding
Stitch height 6mm.
10. the cutter in a kind of cutter head of shield machine as claimed in claim 5, which is characterized in that the material of the blade is hard
Alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718882.8A CN110449680A (en) | 2019-08-05 | 2019-08-05 | Cutter and welding method in a kind of cutter head of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718882.8A CN110449680A (en) | 2019-08-05 | 2019-08-05 | Cutter and welding method in a kind of cutter head of shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110449680A true CN110449680A (en) | 2019-11-15 |
Family
ID=68484891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910718882.8A Pending CN110449680A (en) | 2019-08-05 | 2019-08-05 | Cutter and welding method in a kind of cutter head of shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110449680A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484670A (en) * | 1990-07-26 | 1992-03-17 | Fuji Oozx Kk | Method for build-up welding with build-up material on engine valve or the like |
| CN101279396A (en) * | 2008-05-22 | 2008-10-08 | 上海兆年实业有限公司 | Method for overlaying-welding wear and cutting resistant cemented carbides on mother plate of shield cutters |
| CN103008993A (en) * | 2012-11-29 | 2013-04-03 | 洛阳九久技术开发有限公司 | Manufacturing method of shield machine scraper |
| CN103056486A (en) * | 2013-01-06 | 2013-04-24 | 昆山众备机械设备有限公司 | Numerical control surfacing process applied to TBM (tunnel boring machine) cutters |
| CN103075159A (en) * | 2013-01-11 | 2013-05-01 | 北京城建集团有限责任公司 | Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum |
| CN103287021A (en) * | 2012-02-29 | 2013-09-11 | 苏州优霹耐磨复合材料有限公司 | High-hardness abrasion-resistant low-carbon alloy steel plate |
| CN203441500U (en) * | 2013-08-02 | 2014-02-19 | 中铁四局集团第二工程有限公司 | Rotatable tearing cutter for shield tunneling machine |
| CN108150184A (en) * | 2018-01-19 | 2018-06-12 | 辽宁三三工业有限公司 | The full stratum cutterhead of large-diameter earth pressure balance shield machine |
| JP2018140416A (en) * | 2017-02-28 | 2018-09-13 | 三菱マテリアル株式会社 | Composite member, joining member used for producing the same, and cutting tool formed from composite member |
| CN210370648U (en) * | 2019-08-05 | 2020-04-21 | 辽宁三三工业有限公司 | Cutter in cutter head of shield tunneling machine |
-
2019
- 2019-08-05 CN CN201910718882.8A patent/CN110449680A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484670A (en) * | 1990-07-26 | 1992-03-17 | Fuji Oozx Kk | Method for build-up welding with build-up material on engine valve or the like |
| CN101279396A (en) * | 2008-05-22 | 2008-10-08 | 上海兆年实业有限公司 | Method for overlaying-welding wear and cutting resistant cemented carbides on mother plate of shield cutters |
| CN103287021A (en) * | 2012-02-29 | 2013-09-11 | 苏州优霹耐磨复合材料有限公司 | High-hardness abrasion-resistant low-carbon alloy steel plate |
| CN103008993A (en) * | 2012-11-29 | 2013-04-03 | 洛阳九久技术开发有限公司 | Manufacturing method of shield machine scraper |
| CN103056486A (en) * | 2013-01-06 | 2013-04-24 | 昆山众备机械设备有限公司 | Numerical control surfacing process applied to TBM (tunnel boring machine) cutters |
| CN103075159A (en) * | 2013-01-11 | 2013-05-01 | 北京城建集团有限责任公司 | Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum |
| CN203441500U (en) * | 2013-08-02 | 2014-02-19 | 中铁四局集团第二工程有限公司 | Rotatable tearing cutter for shield tunneling machine |
| JP2018140416A (en) * | 2017-02-28 | 2018-09-13 | 三菱マテリアル株式会社 | Composite member, joining member used for producing the same, and cutting tool formed from composite member |
| CN108150184A (en) * | 2018-01-19 | 2018-06-12 | 辽宁三三工业有限公司 | The full stratum cutterhead of large-diameter earth pressure balance shield machine |
| CN210370648U (en) * | 2019-08-05 | 2020-04-21 | 辽宁三三工业有限公司 | Cutter in cutter head of shield tunneling machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191115 |