CN202017495U - Cutting tool for shield machine to tunnel - Google Patents
Cutting tool for shield machine to tunnel Download PDFInfo
- Publication number
- CN202017495U CN202017495U CN2011200753347U CN201120075334U CN202017495U CN 202017495 U CN202017495 U CN 202017495U CN 2011200753347 U CN2011200753347 U CN 2011200753347U CN 201120075334 U CN201120075334 U CN 201120075334U CN 202017495 U CN202017495 U CN 202017495U
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- CN
- China
- Prior art keywords
- center cutter
- cutter
- cutter piece
- fixedly connected
- center
- 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 - Lifetime
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model belongs to the technical field of tunneling machinery, and particularly relates to a cutting tool for a shield machine to tunnel. The cutting tool comprises a cutting blade base, a central cutting block and a three edge cutters, wherein a central cutting block positioning column and three cutter saddles are arranged on the cutting blade base; a central cutting block positioning hole is arranged in the middle of the positioning column; the bottom of the central cutting block is fixedly connected onto the cutting blade base; a conical boss is fixedly connected with the end part of the positioning column, an inner hole is formed on the conical boss, and sizes of the boss inner hole and the central cutting block positioning column are mutually matched with the size of the central cutting block; the three edge cutters are arranged at the periphery of the central cutting block positioning column, a groove joint for being fixedly connected with the edge cutter is arranged on every cutter saddle, positioning holes are formed on all the three edge cutters respectively, the three edge cutters are fixedly connected in the groove joints of the three cutter saddles through the bolts, and the included angles between the three cutter arms formed by the edge cutters and the cutter saddles are 120 DEG respectively. The cutting tool is highly stable, anti-impact and abrasion-resistant during the tunneling process, is easier to replace the cutting blades, avoids the resource waste, saves the construction cost, and has rather high economic value.
Description
Technical field
The utility model belongs to the road heading machinery accessory, is specifically related to a kind of shield machine cutter.
Background technology
The application of shield machine in underground construction at present more and more widely, cutter head will directly influence the 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 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 the design of existing cutter head of shield machine system, the center cutter that is adopted generally is welded on the base plate of shield machine, by bolt connect with shield machine on other cutters finish headwork jointly.And the form of structure of center cutter is generally fishtail, adopts two tool arms more, and is in one line, is axis of symmetry with the cutterhead center line, 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, promptly 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; Under the situation of the uneven wearing and tearing of tool arm, if tool 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.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of shield machine cutter of rational in infrastructure, replaceable blade chip is provided.The technical solution of the utility model is as follows:
A kind of cutter that is used for the shield machine driving, comprise blade bearing, center cutter piece and three limit blades, described blade bearing is provided with center cutter piece reference column and three knife rests, 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, and cone boss is provided with endoporus, 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 of fixedly connected 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 constitute become 120 ° of angles each other.
As preferred implementation, center cutter of the present utility model, the cross section of center cutter piece is a 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 on blade bearing, by screw the center cutter piece is connected to be positioned on the blade bearing.
Cutter of the present utility model 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 advantages such as long service life, stable, the efficient driving of carrying; In addition on the one hand, traditional fixed tool arm is decomposed into dismountable two parts, make the timely replacing of wearing and tearing blade become possibility, controlled the diffusion of wearing and tearing effectively, avoided the waste of resource, have and keep stable carrying, good economy performance, advantage such as easy to operate, have application prospect widely with respect to general center cutter.
Description of drawings
Fig. 1-1 designs the assembly structure sketch for the utility model.
Fig. 1-2 is and the utility model of Fig. 1-1 different visual angles design assembly structure sketch.
Fig. 2 is the utility model limit blade (after the welding hard alloy blocks) structure diagram.
Fig. 3-1 is the utility model center cutter block structure sketch.
Fig. 3-2 is the utility model center cutter block structure sketch with Fig. 3-1 different visual angles.
Fig. 4-1 is the structure diagram of the utility model blade bearing.
Fig. 4-2 is the structure diagram with the utility model blade bearing of Fig. 4-1 different visual angles.
Fig. 5-1 is the vertical view of the utility model blade bearing.
Fig. 5-2 is the elevation of the utility model blade bearing.
Fig. 5-3 is the upward view of the utility model blade bearing.
The specific embodiment
Below in conjunction with accompanying drawing theory structure of the present utility model and concrete enforcement are further described.
The utility model provides a kind of replaceable blade chip center cutter mainly to be made up 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, on limit blade 11, be processed with some locating holes 13, connect (part bolt 3, pad 4, nut 5 and bolt connecting hole 21 as shown in drawings) by bolt the limit blade is positioned on the corresponding knife rest 18 of blade bearing, form tool arm.Three tool arms are mutually angle and are evenly distributed on the circumference for 120 °, and such form of structure has stronger bearing stability, and the raising to whole cutterhead drivage efficiency simultaneously 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, what center cutter piece 15 was more different is, 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 bigger 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, connects (screw 9, pad 10 and locating hole 19 as shown) by screw and is positioned on the blade bearing, and accurate positioning is higher.In order to strengthen the stability of center cutter piece, and avoid the delay of dregs at front end, processing cone boss 7, the boss center is processed with the circumferential locating hole that the cross section is a rectangle, circumferentially is processed with to be used for the axial location hole that screw connects (screw 6 and screwed hole 22 as shown).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 parts of center cutter are connected to this center cutter on the cutterhead by locating hole 17 after being assembled on the blade bearing, along with the rotation of cutterhead, finish the headwork of center cutter.When the wearing and tearing that detect center cutter comparatively seriously need 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 to the utility model on center cutter piece 8 tops.In this center cutter tunneling process stability better, shock resistance, wear resistance are higher, the replacing of blade is operated easily, has avoided the waste of resource, has saved the cost of construction, has higher economic value.
Claims (4)
1. one kind is used for the cutter that shield machine tunnels, comprise blade bearing, center cutter piece and three limit cuttves, it is characterized in that, described blade bearing is provided with center cutter piece reference column and three knife rests, 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, cone boss is provided with endoporus, 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 of fixedly connected 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 constitute become 120 ° of angles each other.
2. cutter according to claim 1 is characterized in that, the cross section of center cutter piece is a rectangle, and the cross section of center cutter piece locating hole and cone boss endoporus is rectangle.
3. cutter according to claim 1 and 2 is characterized in that, is fixed with hard alloy blocks on center cutter piece top, and 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 any described cutter of claim 1 to 3, it is characterized in that, be provided with screwed hole, on blade bearing, be processed with the locating hole coaxial, the connection of center cutter piece is positioned on the blade bearing by screw with reference column at the bottom centre place of center cutter piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200753347U CN202017495U (en) | 2011-03-21 | 2011-03-21 | Cutting tool for shield machine to tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200753347U CN202017495U (en) | 2011-03-21 | 2011-03-21 | Cutting tool for shield machine to tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017495U true CN202017495U (en) | 2011-10-26 |
Family
ID=44811166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200753347U Expired - Lifetime CN202017495U (en) | 2011-03-21 | 2011-03-21 | Cutting tool for shield machine to tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155238A (en) * | 2011-03-21 | 2011-08-17 | 天津大学 | Exchangeable blade type center cutter for shield machine |
-
2011
- 2011-03-21 CN CN2011200753347U patent/CN202017495U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155238A (en) * | 2011-03-21 | 2011-08-17 | 天津大学 | Exchangeable blade type center cutter for shield machine |
| CN102155238B (en) * | 2011-03-21 | 2013-01-02 | 天津大学 | Exchangeable blade type center cutter for shield machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |