CN202467852U - Arc-shaped advancing cutter for shield machine - Google Patents
Arc-shaped advancing cutter for shield machine Download PDFInfo
- Publication number
- CN202467852U CN202467852U CN2012201263335U CN201220126333U CN202467852U CN 202467852 U CN202467852 U CN 202467852U CN 2012201263335 U CN2012201263335 U CN 2012201263335U CN 201220126333 U CN201220126333 U CN 201220126333U CN 202467852 U CN202467852 U CN 202467852U
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- Prior art keywords
- cutter
- arc
- cutter hub
- cutter body
- alloy body
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- Expired - Fee Related
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Abstract
The utility model discloses an arc-shaped advancing cutter for a shield machine. The arc-shaped advancing cutter comprises a cutter body, wherein the upper surface of the cutter body is arc-shaped; stepped bosses are arranged at the central positions of the left and right sides of the cutter body; a square alloy body is welded in an inner groove on the middle part of each boss; the left and right sides of each boss are arc-shaped relative to a welded alloy body; the left and right ends of the top of the cutter body are provided with an open groove respectively; a large alloy body is welded in each open groove; single inclined surface arc transition is adopted for each large alloy body; three inner grooves are formed at the central position of the top of the cutter body; and a strip-shaped alloy body which is higher than the cutter body is welded in each inner groove. An arc-shaped structure is adopted for the cutter body, and both sides of the cutter body are elliptical, so that convenience is brought to shunting of ground, and extrusion and accumulation of ground towards the center of a cutter head are reduced. The arc-shaped advancing cutter is a protective cutter body, so that the wear resistance of the cutter body is enhanced, and an alloy surface is increased; and the alloy bodies on the top of the advancing cutter are a little higher than the cutter body, so that direct wear of the cutter body caused by the ground is avoided, the cutter body is protected effectively, and the service life of the cutter body is prolonged.
Description
Technical field
The utility model belongs to the shield machine accessory, is specifically related to a kind of arc that is installed on cutter head of shield machine cutter of going ahead of the rest.
Background technology
Further propelling along with Urbanization in China; It is increasingly high that City Underground Transportation is scratched planning, establishment and the construction requirement turned round, and shield method is fast with compliance, the speed of application of its geological conditions, interference becomes the stingy first-selected worker's method of construction of turning round of City Underground Transportation less to surrounding enviroment.Shield machine utilizes the rotation of cutterhead, drives the cutter that is provided with on the cutterhead rock, soil layer, sandstone etc. are ditched, rolled, and the engineering driving is accomplished in broken and cutting.Select suitable cutterhead according to engine request and geological conditions, corresponding cutter is installed.Cutter generally is divided into cutter, scraper and hobboing cutter in advance.In advance cutter is main in design considers and bite combination collaborative work that cutter is before the bite cutting soil body, to cut the soil body in advance in advance, with soil body cutting whole into sections, forms for bite and to make good machining condition.Mainly be suitable for loose media stratum and sand-pebble layer, cutter substitutes hobboing cutter in advance under this geological conditions, owing to self do not rotate; Only do small swing, effectively prevented to transfer certainly the wearing and tearing of generation, can effectively cut development end again because of cutter; Increase the aperture opening ratio of cutterhead; Prevent to form mud cake, reduce the probability that cutterhead is blocked, can obviously improve driving speed in the cutterhead centre.Cutter is different by its installation site and effect in advance, is divided into and tears cutter, goat's horn cutter, rake teeth cutter etc., and above-mentioned several kinds of cutters are respectively at arc cutter hub, erietiform cutter hub two goat's horn places, rake teeth shape cutter hub upper shed welding strip alloy or alloy block.All have cutter hub to expose that anti-wear performance is poor, welding alloy is prone to come off to scrap, cut phenomenons such as soil body creeping property is relatively poor, application life is short.
Summary of the invention
The purpose of the utility model is to provide a kind of anti-wear performance high, significantly increases the creeping property of the cutting soil body, increases the aperture opening ratio of cutterhead; Reduce the moment of torsion of cutting tool; Improve the stock-removing efficiency of cutting tool group, reduce the abrasion of cutting tool group, alternative original shield machine is with the cutter of going ahead of the rest.
This shield machine comprises cutter hub with the arc cutter of going ahead of the rest, and it is characterized in that; Said cutter hub upper surface is an arc, and the position is a trapezoid boss in the heart in the left and right sides of cutter hub, is welded with square alloy body in the inner groovy of boss middle part; The left and right sides and welding alloy body are curved, and right ends is provided with an open type groove at the top of cutter hub, are welded with big alloy body in the open type groove; Big alloy body adopts monocline face arc-shaped transition, and cutter hub top center position is provided with three inner groovies, is welded with the strip alloy body that exceeds cutter hub in the inner groovy; The big alloy body in top all becomes radial distribution with the strip alloy body, is connected mutually with arc.
Cutter hub upper surface arc is that the center with cutterhead is the circular arc that radius was become, and is big more from the central angle of the nearer cutter hub arc in cutterhead center, the degree of crook increase.
Curved end, end face and the left and right sides and other exsertion part build-up wear-resistant layer or spraying wear-resistant materials in the front and back of cutter hub.
In the middle of the cutter hub bottom, there is a groove to be connected mutually with the boss of tool rest.
After the utility model adopted said structure, the arc cutter of going ahead of the rest was installed on the cutter head of shield machine through tool rest, along with forward and reverse motion of cutterhead; The big alloy body in cutter top contacts ground earlier in advance, and big alloy body and ground form greater impact, and cutterhead load raises suddenly; The distortion of ground surface elasticity, cutting force increases sharply, because big alloy body adopts monocline face arc-shaped transition; Can effectively dodge the bump with ground, and ground is carried out compacting.The ground that is compacted is cut by the alloy body that the top exceeds cutter hub, owing to do not decrease the constraint of ground on every side, ground breaks, and cutting force continues to increase, and ground travelled forward around the movement tendency that ground breaks promoted.When not decreasing the Free Surface of ground around the crack growth extremely, the ground in cutter the place ahead separates with bottom rock-soil.Form smear metal and handle shunting once more by another big alloy body.Thereby guaranteed to the excavation face push, ditch, broken operation in advance.Because cutter hub adopts arcuate structure, the cutter hub both sides are the shunting that trapezoidal shape is convenient to ground, reduce ground to the extruding accumulation of cutterhead center.The arc cutter of going ahead of the rest has increased the alloy face for protection cutter hub, the abrasion resistance that improved cutter hub, and cutter top alloy body has been avoided the direct wearing and tearing of ground to cutter hub a little more than cutter hub in advance, has effectively protected cutter hub, has prolonged cutter hub application life.
Description of drawings
Fig. 1 is the utility model front view
Fig. 2 is the utility model lateral view
Fig. 3 is the utility model vertical view
In the accompanying drawing, 1, cutter hub, 2, big alloy body, 3, the strip alloy body, 4, square alloy body, 5 installation bases, 6, wearing layer, 7, groove.
The specific embodiment
Embodiment to the utility model elaborates below in conjunction with accompanying drawing.
In Fig. 1, Fig. 2 and Fig. 3, this shield machine comprises cutter hub 1 with the arc cutter of going ahead of the rest; 1 surface is an arc on the said cutter hub, and the position is a trapezoid boss in the heart in the left and right sides of cutter hub 1, is welded with square alloy body 4 in the inner groovy of boss middle part; The left and right sides and welding alloy body are curved, and right ends is provided with an open type groove at the top of cutter hub, are welded with big alloy body 2 in the open type groove; Big alloy body 2 adopts monocline face arc-shaped transition, and cutter hub 1 top center position is provided with three inner groovies, is welded with the strip alloy body 3 that exceeds cutter hub in the inner groovy; The big alloy body 2 in top all becomes radial distribution with strip alloy body 3, is connected mutually with arc.
Cutter hub 1 upper surface arc is that the center with cutterhead is the circular arc that radius was become, and is big more from the central angle of the nearer cutter hub arc in cutterhead center, the degree of crook increase.
Curved end, end face and the left and right sides and other exsertion part build-up wear-resistant layer 6 in the front and back of cutter hub 1.
In the middle of cutter hub 1 bottom, there is a groove 7 to be connected mutually with the boss of tool rest.
Claims (4)
1. shield machine comprises cutter hub with the arc cutter of going ahead of the rest, and it is characterized in that; Said cutter hub upper surface is an arc, and the position is a trapezoid boss in the heart in the left and right sides of cutter hub, is welded with square alloy body in the inner groovy of boss middle part; The left and right sides and welding alloy body are curved, and right ends is provided with an open type groove at the top of cutter hub, are welded with big alloy body in the open type groove; Big alloy body adopts monocline face arc-shaped transition, and cutter hub top center position is provided with three inner groovies, is welded with the strip alloy body that exceeds cutter hub in the inner groovy; The big alloy body in top all becomes radial distribution with the strip alloy body, is connected mutually with arc.
2. shield machine according to claim 1 is characterized in that with the arc cutter of going ahead of the rest, and cutter hub upper surface arc is that the center with cutterhead is the circular arc that radius was become, and is big more from the central angle of the nearer cutter hub arc in cutterhead center, the degree of crook increase.
3. shield machine according to claim 1 is characterized in that curved end, end face and the left and right sides and other exsertion part build-up wear-resistant layer or spraying wear-resistant materials in the front and back of cutter hub with the arc cutter of going ahead of the rest.
4. shield machine according to claim 1 is characterized in that in the middle of the cutter hub bottom, having a groove to be connected mutually with the boss of tool rest with the arc cutter of going ahead of the rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201263335U CN202467852U (en) | 2012-03-30 | 2012-03-30 | Arc-shaped advancing cutter for shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201263335U CN202467852U (en) | 2012-03-30 | 2012-03-30 | Arc-shaped advancing cutter for shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467852U true CN202467852U (en) | 2012-10-03 |
Family
ID=46916017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201263335U Expired - Fee Related CN202467852U (en) | 2012-03-30 | 2012-03-30 | Arc-shaped advancing cutter for shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943676A (en) * | 2012-10-25 | 2013-02-27 | 山东天工岩土工程设备有限公司 | Concrete cutting advanced cutter for shield tunneling machine |
| CN104060994A (en) * | 2014-06-30 | 2014-09-24 | 无锡市威海达机械制造有限公司 | Shield machine cutter |
| CN107842370A (en) * | 2017-12-26 | 2018-03-27 | 中铁工程装备集团有限公司 | A kind of replaceable tear knife system of sand-pebble layer |
-
2012
- 2012-03-30 CN CN2012201263335U patent/CN202467852U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943676A (en) * | 2012-10-25 | 2013-02-27 | 山东天工岩土工程设备有限公司 | Concrete cutting advanced cutter for shield tunneling machine |
| CN104060994A (en) * | 2014-06-30 | 2014-09-24 | 无锡市威海达机械制造有限公司 | Shield machine cutter |
| CN107842370A (en) * | 2017-12-26 | 2018-03-27 | 中铁工程装备集团有限公司 | A kind of replaceable tear knife system of sand-pebble layer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20180330 |