CN205135640U - Shield constructs four quick -witted hole scrapers - Google Patents
Shield constructs four quick -witted hole scrapers Download PDFInfo
- Publication number
- CN205135640U CN205135640U CN201520916307.6U CN201520916307U CN205135640U CN 205135640 U CN205135640 U CN 205135640U CN 201520916307 U CN201520916307 U CN 201520916307U CN 205135640 U CN205135640 U CN 205135640U
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- scraper
- anterior
- rear portion
- cutter
- alloy
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Abstract
The utility model discloses a shield constructs four quick -witted hole scrapers, it includes: the blade holder, set up four connecting holes on the blade holder, anterior scraper, anterior scraper is fixed the one side at blade holder top, the rear portion scraper, the rear portion scraper is fixed the opposite side at blade holder top, the position with anterior scraper sets up relatively, the side scraper, the side scraper includes first side scraper and second side scraper, the cutter holder is scraped between the two with the front portion to the first end of first side scraper and the first end of second side scraper, the cutter holder is scraped between the two with the rear portion to the second end of first side scraper and the second end of second side scraper. The utility model discloses the alloy wide coverage of the surface of four hole swoves (being rear portion scraper and side scraper) can effectual protection cutter parent (anterior scraper promptly), avoids it to suffer wear, the increase of the alloy of both sides and back, great increase the alloy coverage area of cutter surface, be convenient for protect anterior scraper, effectual extension cutter life.
Description
Technical field
The utility model belongs to shield cutter technical field, particularly relates to a kind of shield machine four hole scraper.
Background technology
For the construction works that underground change is comparatively complicated, in tunnel excavating process, viscous soil horizon, powder soil horizon, sandy soils, crushed stone soil layer may be run into, and marl stratum, some place has boulder bed etc.Stratum complicated and changeable above, requires that cutter not only will have higher abrasion resistance, also wants the possibility can bearing unexpected cobble shock.
During shield machine driving, drawn down or draw the quarrel soil loosened by upper strata cutter, need to be scraped by four hole scrapers storehouse of burying, then discharged by conveying worm.Because shield machine can positive and negative both direction rotate, during rotating forward, the soil body is cut in the front portion of scraper, but the back of scraper is not protected, particularly during shield machine reversion, very serious to the back wearing and tearing of scraper, decreases cutting-tool's used life.
In order to reduce cutter loss, and reducing the shield structure probability in the not tool changing in the driving of stratum quietly such as sandy gravel, needing a kind of scraper of the compound stratum geology for cobble and weak soil.
Summary of the invention
The purpose of this utility model is to provide a kind of shield machine four hole scraper, to solve when cutterhead reverses, and the leading abrasion techniques problem of the doctor back caused.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of shield machine four hole scraper, and it comprises:
Tool rest, described tool rest is arranged four connecting holes;
Anterior scraper, described anterior scraper is fixed on the side at described tool rest top;
Rear portion scraper, described rear portion scraper is fixed on the opposite side at described tool rest top, and position and described anterior scraper are oppositely arranged;
Side scraper, described side scraper comprises the first side scraper and the second side scraper; The first end of the first side scraper and the first end of the second side scraper are by anterior scraper holder between; The second end of the first side scraper and the second end of the second side scraper are by rear portion scraper holder between.
Shield machine four hole according to claim 1 scraper, is characterized in that, described first side scraper and the second side scraper are fixed on described tool rest.
Shield machine four hole according to claim 1 and 2 scraper, is characterized in that, the length of described anterior scraper is greater than the length of described rear portion scraper.
Shield machine four hole according to claim 1 and 2 scraper, is characterized in that, the hardness of described scraper alloy used is greater than the hardness of described tool rest alloy used.
Shield machine four hole according to claim 3 scraper, is characterized in that, the hardness of described scraper alloy used is greater than the hardness of described tool rest alloy used.
The beneficial effects of the utility model are:
The alloy wide coverage (i.e. rear portion scraper and side scraper) of the external surface of the utility model four hole cutter effectively can protect cutter parent (i.e. anterior scraper); it is avoided to suffer abrasion; the increase of the alloy of both sides and back; add the alloy area coverage of cutter external surface greatly; be convenient to protect anterior scraper, effective tool life.
Accompanying drawing explanation
By detailed description done in conjunction with the following drawings, above-mentioned and/or other aspects of the present utility model and advantage will become clearer and be easier to understand, and these accompanying drawings just schematically, do not limit the utility model, wherein:
Fig. 1 is the shield machine four hole scraper schematic diagram of a kind of embodiment of the utility model;
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 3 is the schematic top plan view of Fig. 1.
In accompanying drawing, the list of parts representated by each label is as follows:
1, tool rest, 2, anterior scraper, 3, rear portion scraper, 4, side scraper, 5, connecting hole.
Detailed description of the invention
Hereinafter, the embodiment of shield machine four hole of the present utility model scraper is described with reference to the accompanying drawings.
The embodiment recorded at this is specific detailed description of the invention of the present utility model, for illustration of design of the present utility model, is all explanatory and exemplary, should not be construed as the restriction to the utility model embodiment and the utility model scope.Except the embodiment recorded at this, those skilled in the art can also adopt other technical scheme apparent based on the content disclosed in the application's claims and manual, and these technical schemes comprise the technical scheme making any apparent substitutions and modifications adopted the embodiment recorded at this.
The accompanying drawing of this manual is schematic diagram, and aid illustration design of the present utility model schematically shows shape and the correlation thereof of each several part.Note that the structure of each parts for the ease of clearly showing the utility model embodiment, not according to identical scale between each accompanying drawing.Identical reference marker is for representing identical part.
Fig. 1-Fig. 3 illustrates the shield machine four hole scraper of a kind of embodiment of the utility model, and it comprises:
Tool rest 1, described tool rest is arranged four connecting holes 5;
Anterior scraper 2, described anterior scraper is fixed on the side at described tool rest top;
Rear portion scraper 3, described rear portion scraper is fixed on the opposite side at described tool rest top, and position and described anterior scraper are oppositely arranged;
Side scraper 4, described side scraper comprises the first side scraper and the second side scraper; Described first side scraper and the second side scraper are fixed on described tool rest; The first end of the first side scraper and the first end of the second side scraper are by anterior scraper holder between; The second end of the first side scraper and the second end of the second side scraper are by rear portion scraper holder between.
The abrasion resistance of cutter is mainly reflected in the area coverage of tool surface carbide alloy, and carbide alloy to cutter generally, is part the most wear-resisting, and the carbide alloy that the external surface of cutter covers is more, and cutter inherently more can stand the wearing and tearing of long period.The impact resistance of cutter, is mainly reflected in the size of hard alloy blocks, and cutter hard alloy blocks is in a work direction larger, and its ability of bearing shock is stronger, and very thin alloy sheet is slightly stressed will be broken.The alloy wide coverage (i.e. rear portion scraper and side scraper) of the external surface of the utility model above-described embodiment four hole cutter effectively can protect cutter parent (i.e. anterior scraper); it is avoided to suffer abrasion; the increase of the alloy of both sides and back; add the alloy area coverage of cutter external surface greatly; be convenient to protect anterior scraper, effective tool life.
Operating principle: during shield machine driving, is drawn down or draws the quarrel soil loosened, need to be scraped by four hole scrapers storehouse of burying, then discharged by conveying worm by upper strata cutter.Because shield machine can positive and negative both direction rotate, during rotating forward, anterior scraper cuts the soil body, and the back of anterior scraper is protected by rear portion scraper.That is, no matter shield machine rotates forward or reversion, for cutter, carbide alloy all can be had to protect anterior scraper, therefore can cutting-tool's used life be extended.
As shown in Figure 2, in the shield machine four hole scraper of the utility model above-described embodiment, the length of anterior scraper 2 is greater than the length of described rear portion scraper 3.
In the shield machine four hole scraper of the utility model above-described embodiment, the hardness of described scraper alloy used is greater than the hardness of described tool rest alloy used.Such as described side-cutting tooth and middle cutting are carbide alloy (as W-Co kind carbide alloy, kennametal, tungsten titanium tantalum (niobium) series hard alloy).
Each technical characteristic of above-mentioned disclosure is not limited to that disclosed with combination that is further feature, other combination that those skilled in the art also can carry out between each technical characteristic according to the object of invention, is as the criterion with the object realizing the utility model.
Claims (5)
1. a shield machine four hole scraper, is characterized in that, comprising:
Tool rest, described tool rest is arranged four connecting holes;
Anterior scraper, described anterior scraper is fixed on the side at described tool rest top;
Rear portion scraper, described rear portion scraper is fixed on the opposite side at described tool rest top, and position and described anterior scraper are oppositely arranged;
Side scraper, described side scraper comprises the first side scraper and the second side scraper; The first end of the first side scraper and the first end of the second side scraper are by anterior scraper holder between; The second end of the first side scraper and the second end of the second side scraper are by rear portion scraper holder between.
2. shield machine four hole according to claim 1 scraper, is characterized in that, described first side scraper and the second side scraper are fixed on described tool rest.
3. shield machine four hole according to claim 1 and 2 scraper, is characterized in that, the length of described anterior scraper is greater than the length of described rear portion scraper.
4. shield machine four hole according to claim 1 and 2 scraper, is characterized in that, the hardness of described scraper alloy used is greater than the hardness of described tool rest alloy used.
5. shield machine four hole according to claim 3 scraper, is characterized in that, the hardness of described scraper alloy used is greater than the hardness of described tool rest alloy used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916307.6U CN205135640U (en) | 2015-11-17 | 2015-11-17 | Shield constructs four quick -witted hole scrapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916307.6U CN205135640U (en) | 2015-11-17 | 2015-11-17 | Shield constructs four quick -witted hole scrapers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135640U true CN205135640U (en) | 2016-04-06 |
Family
ID=55621445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520916307.6U Active CN205135640U (en) | 2015-11-17 | 2015-11-17 | Shield constructs four quick -witted hole scrapers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205135640U (en) |
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2015
- 2015-11-17 CN CN201520916307.6U patent/CN205135640U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |