CN209942824U - Shield constructs scraper suitable for large particle diameter sandy gravel stratum - Google Patents
Shield constructs scraper suitable for large particle diameter sandy gravel stratum Download PDFInfo
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- CN209942824U CN209942824U CN201920195754.5U CN201920195754U CN209942824U CN 209942824 U CN209942824 U CN 209942824U CN 201920195754 U CN201920195754 U CN 201920195754U CN 209942824 U CN209942824 U CN 209942824U
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- scraper
- carbide
- hard alloy
- plane section
- cutter body
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Abstract
A shield scraper suitable for a large-particle-size sandy gravel stratum relates to a shield scraper, which comprises a scraper body, wherein the upper surface of the scraper body is formed by connecting a plane section and an inclined plane section, at least one row of hard alloy nails are arranged on the plane section, a plurality of hard alloy nails are uniformly arranged at intervals in each row, a cutting edge is arranged at the upper edge of the outer side of the plane section, wear-resistant layers are respectively built between every two adjacent hard alloy nails and on the lower surface of the cutting edge in a build-up welding manner, a long-strip-shaped hard alloy block is embedded in the upper part of the back of the scraper body, vertical back hard alloy B is arranged on both sides of the lower part of the back of the scraper body, transverse back hard alloy A is embedded between the back hard alloy B on both sides; the utility model discloses an inlay carbide and upper portion at cutter body back and inlay carbide nail, avoided the scraper to receive the striking and lead to the alloy to collapse to be garrulous in the cobble stratum when improving cutter body scour resistance, shock resistance and wearability.
Description
Technical Field
The utility model relates to a shield constructs the scraper, especially relates to a shield constructs scraper suitable for big particle diameter sandy cobble stratum.
Background
As is known, the sandy gravel stratum with large particle size has large impact and grinding performance on the cutter because the pebbles have large particle size, high hardness and high density and filler among the pebbles is fine sand or medium sand. When the shield machine is constructed in a large-particle-size sandy gravel stratum, the hard alloy at the cutting edge part of the common scraper can be crushed and fall off due to the impact of pebbles; in addition, the repeated scouring and abrasion of the slag soil to the cutter can cause the scraper to be quickly abraded, the service life of the scraper is greatly shortened, and the construction efficiency is influenced.
Disclosure of Invention
In order to overcome not enough among the background art, the utility model discloses a shield constructs scraper suitable for big particle diameter sandy cobble stratum.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a shield constructs scraper suitable for large-grain diameter sandy gravel stratum, which comprises a cutter body, the higher authority of cutter body is connected by plane section and inclined plane section and is constituteed, be equipped with one row at least carbide nail in the plane section, every row of carbide nail interval is even is equipped with a plurality of, the outside top edge department of plane section is equipped with the blade, between two adjacent carbide nails, all build-up welding has the wearing layer on the lower part face of blade, the upper portion at cutter body back is inlayed and is had long banding carbide piece, the lower part both sides at cutter body back all are equipped with vertical back carbide B, it has horizontal back carbide A to inlay between the both sides back carbide B, it has lower part carbide to inlay on the inclined plane of cutter body back bottom.
The shield scraper suitable for the large-particle-size sandy gravel stratum is characterized in that a plurality of mounting holes are formed in the inclined plane section on the scraper body.
Since the technical scheme is used, the utility model discloses following beneficial effect has:
the shield scraper suitable for the large-particle-diameter sandy gravel stratum is characterized in that the plane section on the scraper body is embedded with the hard alloy nails so as to enhance and improve the wear resistance of the scraper body in the sandy gravel stratum, and the wear-resistant layers are all welded between two adjacent hard alloy nails and on the outer side surface of the plane section in an overlaying manner so as to enhance and improve the shock resistance, the scouring resistance and the wear resistance of the scraper body; the utility model adopts the technical scheme that the back of the cutter body is embedded with the hard alloy and the upper part of the cutter body is embedded with the hard alloy nail, so that the erosion resistance, the impact resistance and the wear resistance of the cutter body are improved; meanwhile, the alloy breakage caused by the impact of the scraper on the pebble stratum is avoided, the service life and the construction efficiency of the scraper are effectively prolonged, the construction cost is reduced, and the construction requirement of the shield tunneling machine on the large-particle-size sandy pebble stratum is met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of the present invention;
in the figure: 1. a cutter body; 2. a lower hard alloy; 3. back cemented carbide A; 4. a hard alloy block; 5. back cemented carbide B; 6. hard alloy nails; 7. cutting edges; 8. and a wear-resistant layer.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The shield scraper suitable for the large-particle-size sandy gravel stratum comprises a scraper body 1, wherein the scraper body 1 is formed by connecting a plane section and an inclined plane section, at least one row of hard alloy nails 6 are arranged on the plane section, a plurality of hard alloy nails 6 are uniformly arranged at intervals in each row, a cutting edge 7 is arranged at the upper edge of the outer side of the plane section, wear-resistant layers 8 are respectively welded between every two adjacent hard alloy nails 6 and on the lower surface of the cutting edge 7, long-strip-shaped hard alloy blocks 4 are embedded on the upper part of the back of the scraper body 1, vertical back hard alloy B5 is arranged on both sides of the lower part of the back of the scraper body 1, transverse back hard alloy A3 is embedded between the back hard alloy B5 on both sides, and lower hard alloy 2 is embedded on the inclined plane at the bottom of the back of the scraper body 1.
The shield scraper suitable for the large-particle-size sandy gravel stratum is characterized in that a plurality of mounting holes are formed in the inclined surface section on the scraper body 1.
Implement the shield structure scraper suitable for large-particle diameter sandy cobble stratum, when using, the utility model discloses a cutter body 1 passes through the bolt to be installed on the blade holder of shield structure machine blade disc, rotate along with shield structure machine blade disc and scrape stratum dregs, strike the sandy cobble ceaselessly, inlay carbide nail 6 on the plane section above the cutter body 1, the back sets up carbide piece 4 respectively, back carbide A3, back carbide B5, lower part carbide 2, and between two adjacent carbide nails 6, it has wearing layer 8 all to build up welding on the lateral surface of plane section, when scraping dregs, can avoid cutter body 1 quick wearing and tearing well, prolong the life of cutter body 1 effectively, thereby reduce construction cost, improve the efficiency of construction.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (2)
1. The utility model provides a shield constructs scraper suitable for big particle size sandy cobble stratum, includes the cutter body, characterized by: the higher authority of cutter body is connected by plane section and inclined plane section and is constituteed, be equipped with one row at least carbide nail on the plane section, every row of carbide nail interval is even is equipped with a plurality of, the outside top edge department of plane section is equipped with the blade, between two adjacent carbide nails, all the build-up welding has the wearing layer on the lower part face of blade, the upper portion at cutter body back is inlayed and is had long banding carbide piece, the lower part both sides at cutter body back all are equipped with vertical back carbide B, it has horizontal back carbide A to inlay between the both sides back carbide B, it has lower part carbide to inlay on the inclined plane of cutter body back bottom.
2. The shield scraper applicable to the large-particle-size sandy gravel stratum according to claim 1, is characterized in that: the inclined plane section on the cutter body is provided with a plurality of mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920195754.5U CN209942824U (en) | 2019-02-14 | 2019-02-14 | Shield constructs scraper suitable for large particle diameter sandy gravel stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920195754.5U CN209942824U (en) | 2019-02-14 | 2019-02-14 | Shield constructs scraper suitable for large particle diameter sandy gravel stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209942824U true CN209942824U (en) | 2020-01-14 |
Family
ID=69122236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920195754.5U Active CN209942824U (en) | 2019-02-14 | 2019-02-14 | Shield constructs scraper suitable for large particle diameter sandy gravel stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209942824U (en) |
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2019
- 2019-02-14 CN CN201920195754.5U patent/CN209942824U/en active Active
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