CN102155238B - Exchangeable blade type center cutter for shield machine - Google Patents
Exchangeable blade type center cutter for shield machine Download PDFInfo
- Publication number
- CN102155238B CN102155238B CN 201110068134 CN201110068134A CN102155238B CN 102155238 B CN102155238 B CN 102155238B CN 201110068134 CN201110068134 CN 201110068134 CN 201110068134 A CN201110068134 A CN 201110068134A CN 102155238 B CN102155238 B CN 102155238B
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- China
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- center cutter
- cutter piece
- center
- blade
- shield machine
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of tunneling assembly, relating to an exchangeable blade type center cutter for a shield machine; the center cutter comprises a blade seat, a center cutter block and three side cutters; a center cutter block locating post and three knife rests are arranged on the blade seat; the middle part of the locating post is provided with a center cutter block locating hole; the bottom part of the center cutter block is fixedly connected with the blade seat; a cone-shaped lug boss is fixedly connected with the end of the locating post; an inner hole is arranged on the cone-shaped lug boss; the sizes of the inner hole of the lug boss and the center cutter block locating hole are matched with that of the center cutter block; three knife rests are arranged on the periphery of the center cutter block locating post; a groove joint which is fixedly connected with the side cutter is arranged on each knife rest; locating holes are arranged on the three side cutters and are respectively fixedly connected in the groove joints of three knife rests through bolts; three cutter arms formed by the side cutters and the knife rests form an included angle of 120 degrees. The center cutter has better stability in the tunneling process, higher impact resistance and abrasion resistance, and is easy to replace the blade, so that the waste of resource is avoided and the construction cost is saved; therefore, the center cutter has higher economical value.
Description
Technical field
The invention belongs to the road heading machinery accessory, be specifically related to a kind of shield machine cutter.
Background technology
The at present application of shield machine in underground construction is more and more extensive, and cutter head will directly affect performance and the efficient of shield machine as one of critical component of shield machine.The reasonable selection of various cutters and layout are the important contents that needs consideration in the cutterhead design process on the cutterhead.Center cutter is positioned at foremost cutter as shield machine, and have very important effect to whole cutterhead system its application life.And the application life of center cutter and the form of structure of himself and mounting method have direct relation.
In existing cutter head of shield machine system, the center cutter that adopts generally is welded on the base plate of shield machine, be bolted with shield machine on other cutters jointly finish headwork.And the form of structure of center cutter is generally fishtail, adopts two tool arms more, and is in one line, take the cutterhead center line as axis of symmetry, forms axially symmetric structure; At present, also there is the staff of association area to propose comparatively to stablize the new structure that tool arm becomes " Y " shape.But present most shield machine equipment adopts center cutter tool arm type of attachment for welding, namely belongs to non-dismountable connection, has caused the non-exchange of blade, and this just has very high requirement to the alloy material performance on the center cutter; In the situation of the uneven wearing and tearing of tool arm, if Cutter wear is not revised, will cause each tool arm diffusivity wearing and tearing aggravation of center cutter, whole cutterhead system even driving system are caused significant impact; If whole cutter is changed, will inevitably strengthen construction cost, cause the wasting of resources.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of center cutter for shield machine of rational in infrastructure, replaceable blade chip is provided.Technical scheme of the present invention is as follows:
A kind of exchangeable blade type center cutter for shield machine, comprise blade bearing, center cutter piece and three limit blades, be provided with center cutter piece reference column and three knife rests on the described blade bearing, the middle part of reference column is provided with center cutter piece locating hole, the bottom of center cutter piece is fixedly connected on the blade bearing, end at reference column is fixedly connected with cone boss, is provided with endoporus on the cone boss, and the size of boss endoporus and center cutter piece locating hole and the size of center cutter piece cooperatively interact; Three knife rests are arranged at the periphery of center cutter piece reference column, offer the line of rabbet joint that is fixedly connected with the limit blade on each knife rest, be provided with locating hole on three limit cuttves, be bolted to connection respectively in the line of rabbet joint of three knife rests, three tool arms by limit blade and knife rest consist of become 120 ° of angles each other.
As preferred embodiment, center cutter of the present invention, the cross section of center cutter piece is rectangle, the cross section of center cutter piece locating hole and cone boss endoporus is rectangle; Be fixed with hard alloy blocks on center cutter piece top, fixedly surface, knife rest front end and the boss external surface of hard alloy blocks part are provided with wearing layer on center cutter piece top; Bottom centre place at the center cutter piece is provided with screwed hole, is processed with the locating hole coaxial with reference column at blade bearing, by screw the center cutter piece is connected to be positioned on the blade bearing.
Cutter of the present invention makes each tool arm stressed evenly on the one hand, and working resistance is little, has improved effectively that center cutter resistance to wears, anti-vibration, shock proof performance, has the advantages such as long service life, carrying are stable, high efficient driving; In addition on the one hand, traditional fixed tool arm is decomposed into dismountable two parts, so that the timely replacing of wearing and tearing blade becomes possibility, effectively controlled the diffusion of wearing and tearing, avoided the waste of resource, have and keep stable carrying, good economy performance, the advantage such as easy to operate, have widely application prospect with respect to general center cutter.
Description of drawings
Fig. 1-1～1-2 designs the assembly structure sketch for the present invention.
Fig. 2 is limit of the present invention blade (after the welding hard alloy blocks) structure diagram.
Fig. 3-1～3-2 is center cutter block structure sketch of the present invention.
Fig. 4-1～4-2 is the structure diagram of blade bearing of the present invention.
Fig. 5-1～Fig. 5-3 is the top view of blade bearing of the present invention, elevation, upward view.
The specific embodiment
Below in conjunction with accompanying drawing theory structure of the present invention and implementation are further described.
The invention provides a kind of replaceable blade chip center cutter mainly is comprised of blade bearing 1, blade (comprising limit blade 2 and center cutter piece 8) and hard alloy blocks (limit blade hard alloy blocks 12 and center cutter piece hard alloy blocks 14) three parts.Hard alloy blocks is welded to connect on blade by special, forms non-dismountable welding, has very high shock resistance, resistance to wears and anti-shake performance.On the one hand, be processed with some locating holes 13 at limit blade 11, be bolted (as shown in drawings part bolt 3, pad 4, nut 5 and bolt connecting hole 21) the limit blade is positioned on the corresponding knife rest 18 of blade bearing, form tool arm.Three tool arms are mutually 120 ° of angles and are evenly distributed on the circumference, and such form of structure has stronger bearing stability, simultaneously the raising of whole cutterhead drivage efficiency also is very helpful.For whole center cutter, the limit blade that is welded with hard alloy blocks just becomes removable assembly.On the other hand, center cutter piece 15 is more different to be, its cross section is processed to rectangle, and is corresponding with installation site on the blade bearing 20, and such shape plays a good role for the circumferential location of center cutter piece.Top at the center cutter piece is welded with hard alloy blocks, belongs to non-dismountable connection, can bear larger impact, and the top local pressure is comparatively even, and wear resistance improves a lot.Bottom centre at the center cutter piece is processed with screwed hole 16, is connected by screw (as shown screw 9, pad 10 and locating hole 19) and is positioned on the blade bearing, and accurate positioning is higher.In order to strengthen the stability of center cutter piece, and avoid dregs in the delay of front end, processing cone boss 7, the boss center is processed with the circumferential locating hole that the cross section is rectangle, circumferentially is processed with the axial location hole that connects (as shown screw 6 and screwed hole 22) for screw.Boss is directly connected on the blade bearing, is fixed on the periphery of center cutter piece, and the rigidity of center cutter piece further improves.All Assembly of the parts of center cutter to blade bearing after, this center cutter is connected on the cutterhead by locating hole 17, along with the rotation of cutterhead, finish the headwork of center cutter.When the wearing and tearing that detect center cutter comparatively seriously need to be changed, only need cause the respective blade of wearing and tearing aggravation to carry out dismounting and change.Fixedly the surface of hard alloy blocks 14 parts, knife rest front end and boss 7 external surfaces also all are coated with wearing layer on center cutter piece 8 tops in the present invention.In this center cutter tunneling process stability better, shock resistance, wear resistance are higher, the replacing of blade operates easily, has avoided the waste of resource, has saved the cost of construction, has higher economic worth.
Claims (4)
1. exchangeable blade type center cutter for shield machine, comprise blade bearing, center cutter piece and three limit cuttves, it is characterized in that, be provided with center cutter piece reference column and three knife rests on the described blade bearing, the middle part of reference column is provided with center cutter piece locating hole, and the bottom of center cutter piece is fixedly connected on the blade bearing, is fixedly connected with cone boss in the end of reference column, be provided with endoporus on the cone boss, the size of boss endoporus and center cutter piece locating hole and the size of center cutter piece cooperatively interact; Three knife rests are arranged at the periphery of center cutter piece reference column, offer the line of rabbet joint that is fixedly connected with the limit cutter on each knife rest, be provided with locating hole on three limit cuttves, be bolted to connection respectively in the line of rabbet joint of three knife rests, three tool arms by limit cutter and knife rest consist of become 120 ° of angles each other.
2. exchangeable blade type center cutter for shield machine according to claim 1 is characterized in that, the cross section of center cutter piece is rectangle, and the cross section of center cutter piece locating hole and cone boss endoporus is rectangle.
3. exchangeable blade type center cutter for shield machine according to claim 1, it is characterized in that, be fixed with hard alloy blocks on center cutter piece top, fixedly surface, knife rest front end and the boss external surface of hard alloy blocks part are provided with wearing layer on center cutter piece top.
4. according to claim 1 to the described exchangeable blade type center cutter for shield machine of 3 any one, it is characterized in that, bottom centre place at the center cutter piece is provided with screwed hole, be processed with the locating hole coaxial with reference column at blade bearing, by screw the connection of center cutter piece be positioned on the blade bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110068134 CN102155238B (en) | 2011-03-21 | 2011-03-21 | Exchangeable blade type center cutter for shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110068134 CN102155238B (en) | 2011-03-21 | 2011-03-21 | Exchangeable blade type center cutter for shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102155238A CN102155238A (en) | 2011-08-17 |
| CN102155238B true CN102155238B (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110068134 Expired - Fee Related CN102155238B (en) | 2011-03-21 | 2011-03-21 | Exchangeable blade type center cutter for shield machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102155238B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337901B (en) * | 2011-08-30 | 2014-02-26 | 刘勇谋 | Online tool-changing head structure for tunneling operation |
| CN103821455B (en) * | 2013-11-14 | 2016-06-15 | 北京中煤矿山工程有限公司 | A kind of shaft excavation machine drill bit structure correcting pilot shaft deflection |
| CN104265312A (en) * | 2014-09-25 | 2015-01-07 | 无锡市翱宇特新科技发展有限公司 | Center cutter of shield tunneling machine |
| CN106555595A (en) * | 2015-09-30 | 2017-04-05 | 扬州斯普森机械制造有限公司 | The Cutting tool of desert push-bench |
| CN112593966B (en) * | 2020-12-08 | 2022-12-06 | 安徽唐兴装备科技股份有限公司 | Efficient hob replacing device of push bench and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6305754B1 (en) * | 1998-05-29 | 2001-10-23 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Tunnel excavator with S-shaped soil plate |
| JP2003214091A (en) * | 2002-01-29 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Tunnel boring machine |
| JP2004251042A (en) * | 2003-02-21 | 2004-09-09 | Toda Constr Co Ltd | Tunnel excavator |
| CN201180857Y (en) * | 2008-03-18 | 2009-01-14 | 陈浩 | Tool bit of pipe pusher |
| CN101539022A (en) * | 2009-04-24 | 2009-09-23 | 中铁二局股份有限公司 | Earth pressure balance shield machine cutterhead |
| CN201650299U (en) * | 2010-02-02 | 2010-11-24 | 刘玉海 | Center cutter for shield machine |
| CN202017495U (en) * | 2011-03-21 | 2011-10-26 | 天津大学 | Cutting tool for shield machine to tunnel |
-
2011
- 2011-03-21 CN CN 201110068134 patent/CN102155238B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6305754B1 (en) * | 1998-05-29 | 2001-10-23 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Tunnel excavator with S-shaped soil plate |
| JP2003214091A (en) * | 2002-01-29 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Tunnel boring machine |
| JP2004251042A (en) * | 2003-02-21 | 2004-09-09 | Toda Constr Co Ltd | Tunnel excavator |
| CN201180857Y (en) * | 2008-03-18 | 2009-01-14 | 陈浩 | Tool bit of pipe pusher |
| CN101539022A (en) * | 2009-04-24 | 2009-09-23 | 中铁二局股份有限公司 | Earth pressure balance shield machine cutterhead |
| CN201650299U (en) * | 2010-02-02 | 2010-11-24 | 刘玉海 | Center cutter for shield machine |
| CN202017495U (en) * | 2011-03-21 | 2011-10-26 | 天津大学 | Cutting tool for shield machine to tunnel |
Non-Patent Citations (2)
| Title |
|---|
| 刘永强等.盾构刀盘改进及应用研究.《工程机械》.2010,第41卷 |
| 盾构刀盘改进及应用研究;刘永强等;《工程机械》;20100530;第41卷;第12-15页 * |
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| Publication number | Publication date |
|---|---|
| CN102155238A (en) | 2011-08-17 |
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