CN210738571U - Combined type scraper protection device - Google Patents
Combined type scraper protection device Download PDFInfo
- Publication number
- CN210738571U CN210738571U CN201921832529.4U CN201921832529U CN210738571U CN 210738571 U CN210738571 U CN 210738571U CN 201921832529 U CN201921832529 U CN 201921832529U CN 210738571 U CN210738571 U CN 210738571U
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- piece
- wear
- scraper
- blade
- resisting top
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a combined type scraper protection device has solved prior art well scraper protection device intensity low, the poor problem of wearability. The utility model discloses a bottom piece of setting on the blade disc panel is equipped with wear-resisting top piece on the piece of bottom, wear-resisting top piece and bottom piece fixed connection, and the bottom piece sets up on the horizontal plane of blade disc panel, is equipped with the blade holder on the vertical face of blade disc panel, and the scraper is connected with the blade disc panel through the blade holder, and the scraper is corresponding with wear-resisting top piece, bottom piece. The utility model discloses a split type compound piece is protected the scraper, and the brinell hardness of wear-resisting top piece is far more than the bottom piece, and its wearability is strong, at high abrasion stratum and long distance tunnelling in-process, can effectively prolong the time of protection cutter, and then the life of extension cutter.
Description
Technical Field
The utility model relates to a shield constructs blade disc technical field, especially indicates a combined type scraper protection device.
Background
With the development of the transportation industry and the underground space industry, tunnel construction is increasing year by year, and tunnel boring machines are increasingly widely applied. The tunnel boring machine mainly relies on a cutter which is divided into a hob, a tearing cutter, a cutter and the like, wherein the cutter is a main cutter, plays a role in scraping slag in a hard rock stratum, increases slag soil flow, prevents secondary abrasion to the main cutting cutter, plays a role in cutting soil in a soft rock stratum and is directly contacted with a tunnel face. The main characteristics and development directions of tunnel excavation are long distance, large buried depth and large diameter, and the tunnel has high requirements on the service life of the cutter and is difficult to replace, so the cutter protection is an important measure.
The scraper relies on the bolt to be connected with the blade holder, and the blade holder generally welds the location on the blade disc, and the scraper exceeds blade disc panel take the altitude, for preventing to come from the impact at scraper back, need be at scraper back welding protection piece, and this protection piece can bear the impact force that comes from the scraper back, will take place frictional wear with the dregs simultaneously. Current scraper protection piece, formula as an organic whole, whole material is conventional material, and intensity is lower on the one hand, and the top takes place to warp easily when receiving the offend, and on the other hand wearability is relatively poor, easy wearing and tearing in case the top wearing and tearing exceed a definite value, will lose the guard action to the scraper with the scraper discrepancy in elevation too big.
SUMMERY OF THE UTILITY MODEL
Not enough to among the above-mentioned background art, the utility model provides a combined type scraper protection device has solved among the prior art scraper protection device intensity low, the poor problem of wearability.
The technical scheme of the utility model is realized like this: the utility model provides a combined type scraper protection device, is equipped with wear-resisting top piece including setting up the bottom piece on the blade disc panel on the piece of bottom, wear-resisting top piece and bottom piece fixed connection, and the bottom piece sets up on the horizontal plane of blade disc panel, is equipped with the blade holder on the vertical face of blade disc panel, and the scraper is connected with the blade disc panel through the blade holder, and the scraper is corresponding with wear-resisting top piece, bottom piece.
The bottom block is welded on the cutter head panel, the wear-resistant top block is welded on the bottom block, the wear-resistant top block is stacked on the bottom block in parallel, and the bottom of the scraper is in surface contact with the wear-resistant top block.
The width of bottom piece is greater than the width of wear-resisting top piece, and the one end of wear-resisting top piece flushes with the link of bottom piece, and the other end is equipped with the slope and flows the slag surface.
The height that wear-resisting top piece and bottom piece are higher than the blade disc panel is greater than the height that the scraper bottom is higher than the blade disc panel, and is less than the height that scraper cutting edge portion is higher than the blade disc panel.
The wear-resistant top block is a wear-resistant steel plate block, and the bottom block is a Q345 steel block.
The scraper is connected with a cutter holder welded on the cutter head panel through a bolt.
The utility model discloses a split type compound piece is protected the scraper, and the brinell hardness of wear-resisting top piece is far more than the bottom piece, and its wearability is strong, at high abrasion stratum and long distance tunnelling in-process, can effectively prolong the time of protection cutter, and then the life of extension cutter. The bottom block is made of common materials, so that the material cost is reduced; and the inclined slag flowing surface on the wear-resistant top block facilitates smooth flow of the slag scraped off by the scraper, so that the friction with the cutter is reduced, and the working efficiency of the cutter is improved.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is the overall internal structure diagram of the present invention.
Fig. 2 is a schematic view of the connection state of the wear-resistant top block and the wear-resistant bottom block.
Fig. 3 is a three-dimensional schematic view of a wear-resistant top piece and a bottom piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, 2 and 3, embodiment 1 is a composite scraper protection device, which comprises a bottom block 2 disposed on a cutter head panel 5, wherein the bottom block is fixed on the cutter head panel, a wear-resistant top block 1 is disposed on the bottom block 2, the bottom block 2 is welded on the cutter head panel 5, the wear-resistant top block 1 is stacked on the bottom block 2 in parallel, the wear-resistant top block 1 is fixedly connected with the bottom block 2, and the wear-resistant top block 1 can be welded on the bottom block 2. Bottom piece 2 sets up on the horizontal plane of blade disc panel 5, is equipped with blade holder 4 on the vertical face of blade disc panel 5, and scraper 3 is connected with blade disc panel 5 through blade holder 4, and scraper 3 is corresponding with wear-resisting top piece 1, bottom piece 2, and the bottom surface and the wear-resisting top piece of scraper, bottom piece contact promptly.
Further, the wear-resistant top block 1 is a wear-resistant steel plate block, and the bottom block 2 is a Q345 steel block. The Brinell hardness of the wear-resistant steel plate is far greater than that of the bottom base material and reaches 500HBW, the wear resistance of the wear-resistant steel plate is far better than that of a Q345B steel plate, and the time for protecting the cutter can be effectively prolonged in a high-abrasion stratum and a long-distance tunneling process, so that the service life of the cutter is prolonged. The bottom block is made of a common material Q345B, so that the material cost is reduced.
Further, the width of bottom piece 2 slightly is greater than the width of wear-resisting top piece 1, and the one end of wear-resisting top piece 1 flushes with the link of bottom piece 2, and the other end is equipped with slope stream slag face 6, and the slag that the scraper was scraped off is made things convenient for to slope stream slag face 6 smoothly flows. Wear-resisting top piece 1 and bottom piece 2 are higher than 3 bottoms of scraper and are higher than the height that blade disc panel 5 and be less than 3 knife edge portions of scraper and are higher than the height that blade disc panel 5, the whole height that wear-resisting top piece 1 and bottom piece 2 stacked together is slightly greater than 3 bottoms of scraper height, and slightly be less than 3 knife edge portions of scraper height, when not influencing the scraper basic function, scrape the tangent plane and protect it, the dregs of being convenient for simultaneously flow along the slope stream dregs of a river face, wear-resisting top piece wearability is strong, the life of extension protection device and cutter.
The other structure is the same as embodiment 1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a combined type scraper protection device which characterized in that: including setting up bottom piece (2) on blade disc panel (5), be equipped with wear-resisting top piece (1) on bottom piece (2), wear-resisting top piece (1) and bottom piece (2) fixed connection, bottom piece (2) set up on the horizontal plane of blade disc panel (5), be equipped with blade holder (4) on the vertical face of blade disc panel (5), scraper (3) are connected with blade disc panel (5) through blade holder (4), scraper (3) and wear-resisting top piece (1), bottom piece (2) are corresponding.
2. The composite doctor blade protector as claimed in claim 1, wherein: bottom piece (2) welding is on cutter head panel (5), and welding on bottom piece (2) is gone up in wear-resisting top piece (1), and wear-resisting top piece (1) parallel stacks on bottom piece (2), scraper (3) bottom and wear-resisting top piece (1) face contact.
3. The composite doctor blade protector as claimed in claim 1 or 2, characterised in that: the width of bottom piece (2) is greater than the width of wear-resisting top piece (1), and the one end of wear-resisting top piece (1) flushes with the link of bottom piece (2), and the other end is equipped with slope stream slag face (6).
4. The composite doctor blade protector as claimed in claim 3, wherein: the height that wear-resisting top piece (1) and bottom piece (2) are higher than blade disc panel (5) is greater than the height that blade disc panel (5) are higher than in scraper (3) bottom, and is less than the height that blade part of scraper (3) is higher than blade disc panel (5).
5. The composite doctor blade protector as claimed in claim 1 or 4, wherein: the wear-resistant top block (1) is a wear-resistant steel plate block, and the bottom block (2) is a Q345 steel block.
6. The composite doctor blade protector as claimed in claim 5, wherein: the scraper (3) is connected with a cutter holder (4) welded on the cutter head panel (5) through a bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921832529.4U CN210738571U (en) | 2019-10-29 | 2019-10-29 | Combined type scraper protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921832529.4U CN210738571U (en) | 2019-10-29 | 2019-10-29 | Combined type scraper protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738571U true CN210738571U (en) | 2020-06-12 |
Family
ID=70986208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921832529.4U Active CN210738571U (en) | 2019-10-29 | 2019-10-29 | Combined type scraper protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210738571U (en) |
-
2019
- 2019-10-29 CN CN201921832529.4U patent/CN210738571U/en active Active
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