CN108422068A - TBM cutterhead scraper plate method for maintaining - Google Patents
TBM cutterhead scraper plate method for maintaining Download PDFInfo
- Publication number
- CN108422068A CN108422068A CN201810204570.0A CN201810204570A CN108422068A CN 108422068 A CN108422068 A CN 108422068A CN 201810204570 A CN201810204570 A CN 201810204570A CN 108422068 A CN108422068 A CN 108422068A
- Authority
- CN
- China
- Prior art keywords
- scraper plate
- welding
- cutterhead
- cavern
- maintaining
- 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
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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
Abstract
The present invention provides a kind of TBM cutterheads scraper plate method for maintaining, punching, blowing out, repair cavern is formed by way of scarfing cinder in the rock stratum of cutterhead circumference, and then using positioning scraper plate to abrasion scraper plate positioning, then abrasion scraper plate is repaired by the method polished and welded.It is difficult and of high cost that the method for maintaining solves the problems, such as that cutter head of shield machine scraper plate is repaired, the maintenance activity that may be implemented not influence rapid-maintenance TBM cutterhead scraper plates under conditions of the surrounding enviroment such as traffic above-ground and building, produces good social benefit, environmental benefit and economic benefit.
Description
Technical field
The invention belongs to shield machine repair field more particularly to a kind of TBM cutterheads scraper plate method for maintaining.
Background technology
Shield machine mainly realizes driving, therefore knife by the various cutters on cutterhead to the extrusion shearing of ground
Disk is the core component of shield machine.Positioned at the scraper plate of cutterhead fringe region, main function is to scrape the rock slag that hobboing cutter is cut
From broken rock layer, since it is located at the fringe region of cutterhead, comparatively, the revolution diameter of scraper plate is maximum, thus the abrasion of scraper plate
Amount is relatively fast compared with other component, and scraper plate stress is complicated.
The reparation of constructing tunnel cutter head of shield machine in the prior art can excavate one from the upper vertical on driving ground and compare shield
The big vertical shaft of structure machine knife disk diameter, excavating shaft not only needs the time to increase construction cost, and is easily generated in terms of construction
Avalanche not only repairs difficulty and cost is big, but also construction personnel will also undertake titanic peril.
Invention content
In order to solve the above technical problems, the present invention provides a kind of TBM cutterheads scraper plate method for maintaining, which solves
Cutter head of shield machine scraper plate repairs difficult and of high cost problem, may be implemented not influence the surrounding enviroment such as traffic above-ground and building
Under conditions of rapid-maintenance TBM cutterhead scraper plates maintenance activity, produce good social benefit, environmental benefit and economic effect
Benefit.
For achieving the above object, the present invention is with the following method：
After shield machine is shut down, cutterhead is retreated first, the reaming in casing outside cutterhead, cutterhead is retreated after the completion of reaming to reaming
Initial position is punched, is blown out, scarfing cinder forms main cavern；
Cutterhead is pushed into face position by the caverns Kai Zuo on the left of main cavern, the right cavern of right side opening, scarfing cinder, rock slag after cleaning out
It sets；
Scraper plate is parked in left cavern position, choose two pieces of positioning scraper plates and abrasion scraper plate two on cutterhead is attached it to by bolt
Side position；
Cutterhead is rotated to right cavern, the bolt for wearing scraper plate is removed and takes out abrasion scraper plate, will deform or have fallen
Panel seat of scraping cut away along the step part for scraping panel seat, then will abrasion scraper plate and scrape panel seat polish smooth, it is smooth；
Scrape panel seat and scraper plate after the completion of polishing is installed together, and checking of dimensions with two pieces of positioning scraper plates, then uses bolt
It tightens；
It welds to scraping panel seat and scraper plate, after welding, positioning scraper plate is removed.
The welding includes the following steps：
1, all welding positions are rinsed well, and will be thoroughly dried around it, there cannot be water instillation；Then it is polished dry
Only；
2, it is clamped crackle from a side planing to the other side, until can't see crackle with carbon plane；Plane can form a V-type slope after holding
Mouthful, angle is 30-40 °, and groove lower end is less than 10mm, groove is polished flat with abrasive machine later and ensures no coating etc.
Impurity；
3, before welding, welding rod is heated to 300 ° or so, keeps the temperature 1--2 hour, drying, with baking with.
4, welding uses reversal connection mode, i.e. anode to connect soldering turret, DC low current short arc operation, before welding, by cracks plus
Start to weld after heat to 80-100 degree；Using 3.2mm507 welding rods or welding wire bottoming, then use the built-up welding of 4.0mm507 welding rods or
Directly welded using CO2 shield welder；Often weldering together, is polished off impurity with abrasive machine, and the position welded is beaten
Next road welding sequence is carried out after grinding metallic luster；After welding, it is heated to 250--300 degree or so, natural cooling；It wants
Ask per pass weld seam that same welding rod or welding wire can only be used to weld；
5, it after welding, needs to tunnel after naturally cooling to 30 degree.
Technique effect：
1, the present invention realizes the maintenance work of TBM cutterhead scraper plates by simple method, solves cutter head of shield machine scraper plate and repaiies
Multiple difficult and of high cost problem may be implemented not influence rapid-maintenance under conditions of the surrounding enviroment such as traffic above-ground and building
The maintenance activity of TBM cutterhead scraper plates；
2, welding method of the invention effectively ensures the bonding strength of scraper plate after repair, reuses long lifespan, saves production
Cost and shortening maintenance time.
Claims (2)
1. a kind of TBM cutterheads scraper plate method for maintaining, it is characterised in that include the following steps：
After shield machine is shut down, cutterhead is retreated first, the reaming in casing outside cutterhead, cutterhead is retreated after the completion of reaming to reaming
Initial position is punched, is blown out, scarfing cinder forms main cavern；
Cutterhead is pushed into face position by the caverns Kai Zuo on the left of main cavern, the right cavern of right side opening, scarfing cinder, rock slag after cleaning out
It sets；
Scraper plate is parked in left cavern position, choose two pieces of positioning scraper plates and abrasion scraper plate two on cutterhead is attached it to by bolt
Side position；
Cutterhead is rotated to right cavern, the bolt for wearing scraper plate is removed and takes out abrasion scraper plate, will deform or have fallen
Panel seat of scraping cut away along the step part for scraping panel seat, then will abrasion scraper plate and scrape panel seat polish smooth, it is smooth；
Scrape panel seat and scraper plate after the completion of polishing is installed together, and checking of dimensions with two pieces of positioning scraper plates, then uses bolt
It tightens；
It welds to scraping panel seat and scraper plate, after welding, positioning scraper plate is removed.
2. a kind of TBM cutterheads scraper plate method for maintaining according to claim 1, it is characterised in that：The welding includes as follows
Step：
1）All welding positions are rinsed well, and will thoroughly be dried around it, there cannot be water instillation；Then it is polished dry
Only；
2）With carbon plane pincers by crackle from a side planing to the other side, until can't see crackle；Plane can form a V-type slope after holding
Mouthful, angle is 30-40 °, and groove lower end is less than 10mm, groove is polished flat with abrasive machine later and ensures no coating etc.
Impurity；
3）Before welding, welding rod is heated to 300 ° or so, keeps the temperature 1--2 hour, drying, with baking with;
4）Welding uses reversal connection mode, i.e. anode to connect soldering turret, and before welding, cracks are heated to for DC low current short arc operation
Start to weld after 80-100 degree；Using 3.2mm507 welding rods or welding wire bottoming, 4.0mm507 welding rods built-up welding or direct is then used
It is welded using CO2 shield welder；Often weldering together, is polished off impurity with abrasive machine, and the position welded is polished
Next road welding sequence is carried out after metallic luster；After welding, it is heated to 250--300 degree or so, natural cooling；It is required that every
Road weld seam can only use same welding rod or welding wire to weld；
5）After welding, need to tunnel after naturally cooling to 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204570.0A CN108422068A (en) | 2018-03-13 | 2018-03-13 | TBM cutterhead scraper plate method for maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204570.0A CN108422068A (en) | 2018-03-13 | 2018-03-13 | TBM cutterhead scraper plate method for maintaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108422068A true CN108422068A (en) | 2018-08-21 |
Family
ID=63157897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204570.0A Pending CN108422068A (en) | 2018-03-13 | 2018-03-13 | TBM cutterhead scraper plate method for maintaining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108422068A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209405A (en) * | 2018-10-15 | 2019-01-15 | 中建八局轨道交通建设有限公司 | The restorative procedure of cutter head of shield machine large circle |
| CN111250819A (en) * | 2020-02-15 | 2020-06-09 | 盾构及掘进技术国家重点实验室 | Method for welding cutter head and cutter of shield machine in high-pressure environment |
| CN112222756A (en) * | 2020-10-21 | 2021-01-15 | 北京建工土木工程有限公司 | Method for repairing cutter head of shield tunneling machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640101A (en) * | 2016-12-18 | 2017-05-10 | 中铁二十局集团第五工程有限公司 | Shied cutter head abrasion repairing construction method in tunnel |
-
2018
- 2018-03-13 CN CN201810204570.0A patent/CN108422068A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640101A (en) * | 2016-12-18 | 2017-05-10 | 中铁二十局集团第五工程有限公司 | Shied cutter head abrasion repairing construction method in tunnel |
Non-Patent Citations (5)
| Title |
|---|
| 夏明: "高磨蚀地层TBM刀盘洞内快速修复技术", 《工程机械与维修》 * |
| 沈春盛: "狮子洋海底隧道盾构机刀盘修复焊接技术", 《中国建材科技》 * |
| 苗斌: "硬岩掘进机刀座损坏分析及对策", 《铁道建筑技术》 * |
| 赵伟等: "高磨蚀地层TBM刀盘洞内快速修复技术研究", 《四川水力发电》 * |
| 齐梦学等: "敞开式掘进机全面整修技术研究与应用", 《现代隧道技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209405A (en) * | 2018-10-15 | 2019-01-15 | 中建八局轨道交通建设有限公司 | The restorative procedure of cutter head of shield machine large circle |
| CN111250819A (en) * | 2020-02-15 | 2020-06-09 | 盾构及掘进技术国家重点实验室 | Method for welding cutter head and cutter of shield machine in high-pressure environment |
| CN111250819B (en) * | 2020-02-15 | 2021-08-13 | 盾构及掘进技术国家重点实验室 | Method for welding cutter head and cutter of shield machine in high-pressure environment |
| CN112222756A (en) * | 2020-10-21 | 2021-01-15 | 北京建工土木工程有限公司 | Method for repairing 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 |
Application publication date: 20180821 |
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| RJ01 | Rejection of invention patent application after publication |