CN113107508A - Wear-resistant split type shield cutter with replaceable alloy cutting edge and replaceable cutter body - Google Patents
Wear-resistant split type shield cutter with replaceable alloy cutting edge and replaceable cutter body Download PDFInfo
- Publication number
- CN113107508A CN113107508A CN202110499642.0A CN202110499642A CN113107508A CN 113107508 A CN113107508 A CN 113107508A CN 202110499642 A CN202110499642 A CN 202110499642A CN 113107508 A CN113107508 A CN 113107508A
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- China
- Prior art keywords
- cutter
- cutter body
- replaceable
- cutting edge
- threaded hole
- 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.)
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 56
- 239000000956 alloy Substances 0.000 title claims abstract description 56
- 238000005520 cutting process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 3
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000005495 investment casting Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Abstract
The invention discloses a wear-resistant split type shield cutter with a replaceable alloy cutting edge and a replaceable cutter body, which comprises a cutter handle, a lower cutter body, an upper cutter body and an alloy cutting edge, wherein the lower cutter body is connected with the cutter handle through a first connecting bolt, a groove is formed in the upper surface of the lower cutter body, a boss is arranged on the lower surface of the upper cutter body, the upper cutter body is connected with the lower cutter body through a second connecting bolt, a cutting edge clamping and mounting groove penetrates through the upper cutter body, a threaded sleeve is connected to the lower end of the alloy cutting edge, the cutting edge clamping and mounting groove is matched with the alloy cutting edge, the alloy cutting edge and the threaded sleeve are positioned in the cutting edge clamping and mounting groove, the upper end of the alloy cutting edge extends out of the upper surface of the upper cutter body. The invention belongs to the technical field of shield machine accessories, and particularly provides a wear-resistant split shield cutter with a replaceable cutter body, which is low in cost, high in integral wear resistance and capable of replacing damaged parts conveniently.
Description
Technical Field
The invention belongs to the technical field of shield machine accessories, and particularly relates to a wear-resistant split shield cutter with replaceable alloy blades and replaceable cutter bodies.
Background
The shield machine is widely applied to the construction of tunnel engineering such as railways, highways, municipal works, hydropower and the like, a cutter of the shield machine is installed on a cutter head of the shield machine through welding or a pair of cutters, and the plurality of cutters on the cutter head work in a coordinated mode to finish the excavation and tunneling work of a tunnel together.
The existing shield machine cutter has the following problems:
(1) the cutter body is formed by processing a forging piece, the Rockwell hardness is 35-40, the cutter body does not have abrasion resistance, the processing cost is high, an abrasion-resistant layer needs to be welded in advance in the actual use process, the field workload is increased, the welded abrasion-resistant layer is thin, the cutter body is seriously abraded, and the service life is short.
(2) The alloy cutting edge is welded to the forging cutter body in a brazing mode and cannot be detached, and the alloy cutting edge is often damaged and broken after being impacted in the actual construction process, so that the cutter is integrally scrapped and cannot be used again.
Disclosure of Invention
In order to overcome the defects, the invention provides the wear-resistant split shield cutter with the replaceable cutter body, which is low in cost, high in integral wear resistance and capable of replacing damaged parts conveniently.
The invention provides the following technical scheme: the invention relates to a wear-resistant split type shield cutter with a replaceable alloy cutting edge and a replaceable cutter body, which comprises a cutter handle, a lower cutter body, an upper cutter body and an alloy cutting edge, wherein a first threaded hole is formed in the cutter handle, a second threaded hole is formed in the lower cutter body in a penetrating manner, a first connecting bolt is arranged in the first threaded hole of the cutter handle and the second threaded hole of the lower cutter body in a threaded connection manner, the first connecting bolt is positioned at the middle lower part in the second threaded hole, the lower cutter body is connected with the cutter handle through the first connecting bolt, a groove is formed in the upper surface of the lower cutter body, a third threaded hole is formed in the groove, the third threaded hole penetrates through the lower cutter body, a boss is arranged on the lower surface of the upper cutter body, a fourth threaded hole is formed in the boss, the fourth threaded hole of the upper cutter body penetrates through the upper cutter body, a second connecting bolt is, the upper cutter body is provided with a cutting edge clamping installation groove in a penetrating mode, the lower end of the alloy cutting edge is connected with a threaded sleeve, the cutting edge clamping installation groove is matched with the alloy cutting edge, the alloy cutting edge and the threaded sleeve are located in the cutting edge clamping installation groove, the upper end of the alloy cutting edge extends out of the upper surface of the upper cutter body, the middle upper portion of the second threaded hole is provided with a third connecting bolt through threaded connection, and the upper portion of the third connecting bolt is arranged in the threaded sleeve through threaded connection.
Furthermore, a nut supporting platform is arranged in the fourth threaded hole, the nut platform is arranged on the upper portion of the fourth threaded hole, and the nut platform can meet embedded installation of the second connecting bolt, so that the second connecting bolt is prevented from extending out of the upper surface of the upper cutter body to influence the operation of the alloy blade.
Furthermore, the grooves and the bosses are correspondingly provided with a plurality of groups, and the clamping groove structures of the grooves and the bosses of the groups can ensure the integral shock resistance of the cutter body.
Furthermore, the lower cutter body is a steel casting cutter body and is easy to be integrally welded with the cutter head, the upper cutter body is formed by precisely casting a wear-resistant material, the processing amount is small, the Rockwell hardness of the material reaches 50-65, the Rockwell hardness of the material after impact can reach more than 70, and the wear resistance of the cutter can be ensured.
Preferably, the lower cutter body is made of Q345B steel, and is manufactured by milling and annealing treatment processes, wherein the annealing treatment improves weldability and impact toughness.
Preferably, the upper cutter body is made of a chromium-molybdenum alloy, and the upper cutter body is subjected to water toughening treatment at 1120 ℃ during processing and manufacturing, so that the hardness reaches 60HRC, and the excellent wear resistance and impact toughness of the cutter body are ensured.
Preferably, the alloy blade is made of tungsten carbide hard alloy and is produced by precision die casting, and the hardness reaches 85 HRA.
Preferably, 12.9-grade M14 hexagon socket head cap high-strength bolts are adopted as the first connecting bolt, the second connecting bolt and the third connecting bolt.
The invention with the structure has the following beneficial effects: compared with the existing shield cutter, the wear-resistant split type shield cutter with the replaceable alloy cutting edge and the replaceable cutter body has the following beneficial effects and advantages:
(1) the overall Rockwell hardness of the cutter can reach more than 65, the cutter has overall wear resistance, and the service life of the cutter is prolonged;
(2) the cutter adopts a split structure, any part can be replaced when damaged, and the whole cutter does not need to be replaced, so that the purchase cost can be reduced;
(3) the tool adopts a wear-resistant precision casting process, so that the cost of the tool can be integrally reduced, the workload of customers can be reduced, and the construction cost can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of a wear-resistant split shield cutter with replaceable alloy blades and replaceable cutter bodies according to the present invention;
FIG. 2 is a schematic structural diagram of a wear-resistant split shield cutter handle with replaceable alloy blades and replaceable cutter bodies according to the invention;
FIG. 3 is a schematic structural diagram of a lower cutter body of a wear-resistant split shield cutter with replaceable alloy blades and replaceable cutter bodies according to the invention;
FIG. 4 is a schematic structural diagram of an upper cutter body of a wear-resistant split shield cutter with replaceable alloy blades and replaceable cutter bodies according to the invention;
FIG. 5 is a schematic structural diagram of a threaded hole IV and a blade clamping mounting groove of a wear-resistant split shield cutter with a replaceable alloy blade and a replaceable cutter body according to the invention;
fig. 6 is a schematic structural diagram of an abrasion-resistant split shield cutter alloy blade with a replaceable alloy blade and a replaceable cutter body according to the present invention.
The tool comprises a tool handle 1, a tool shank 2, a lower tool body 3, an upper tool body 4, an alloy blade 5, a first threaded hole 6, a second threaded hole 7, a groove 8, a third threaded hole 9, a boss 10, a fourth threaded hole 11, a blade clamping installation groove 12, a threaded sleeve 13, a third connecting bolt 14 and a nut supporting platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 6, the technical scheme adopted by the invention is as follows: a wear-resistant split type shield cutter with replaceable alloy blades and replaceable cutter bodies comprises a cutter handle 1, a lower cutter body 2, an upper cutter body 3 and an alloy blade 4, wherein a first threaded hole 5 is formed in the cutter handle 1, a second threaded hole 6 is formed in the lower cutter body 2 in a penetrating manner, a first connecting bolt is arranged in the first threaded hole 5 of the cutter handle 1 and the second threaded hole 6 of the lower cutter body 2 through threaded connection, the first connecting bolt is positioned at the middle lower part in the second threaded hole 6, the lower cutter body 2 is connected with the cutter handle 1 through the first connecting bolt, a groove 7 is formed in the upper surface of the lower cutter body 2, a third threaded hole 8 is formed in the groove 7, the third threaded hole 8 penetrates through the lower cutter body 2, a boss 9 is arranged on the lower surface of the upper cutter body 3, a fourth threaded hole 10 is formed in the boss 9, the fourth threaded hole 10 penetrates through the upper cutter body 3, a, go up cutter body 3 and lower cutter body 2 and link to each other through connecting bolt two, go up to run through on the cutter body 3 and be equipped with cutting edge block mounting groove 11, the connection of 4 lower extremes of alloy cutting edge is equipped with threaded sleeve 12, cutting edge block mounting groove 11 and alloy cutting edge 4 adaptation, alloy cutting edge 4 and threaded sleeve 12 are located cutting edge block mounting groove 11, and the upper end of alloy cutting edge 4 stretches out the upper surface of going up cutter body 3, upper portion is equipped with connecting bolt three 13 through threaded connection in the threaded hole two 6, connecting bolt three 13 upper portion is located threaded sleeve 12 through threaded connection.
The nut supporting platform 14 is arranged in the four threaded holes 10, the nut platform is arranged on the upper portion of the four threaded holes 10, and the nut platform can meet embedded installation of the second connecting bolt, so that the second connecting bolt is prevented from extending out of the upper surface of the upper cutter body 3 to influence the operation of the alloy blade 4. The grooves 7 and the bosses 9 are correspondingly provided with a plurality of groups, and the clamping groove structures of the grooves 7 and the bosses 9 are arranged to ensure the overall shock resistance of the cutter body. The lower cutter body 2 is a steel casting cutter body and is easy to be integrally welded with the cutter head, the upper cutter body 3 is formed by precisely casting wear-resistant materials, the processing amount is small, the Rockwell hardness reaches 50-65, the Rockwell hardness of the materials after being impacted can reach more than 70, and the wear resistance of the cutter can be ensured. The lower cutter body 2 is made of Q345B steel, the lower cutter body 2 is manufactured by milling and annealing treatment, and the weldability and impact toughness are improved by annealing treatment. The upper cutter body 3 is made of chromium-molybdenum alloy, and the upper cutter body 3 is subjected to water toughening treatment at 1120 ℃ during processing and manufacturing, so that the hardness reaches 60HRC, and the excellent wear resistance and impact toughness of the cutter body are ensured. The alloy blade 4 is made of tungsten carbide hard alloy and produced by precision die casting, and the hardness reaches 85 HRA. The connecting bolt I, the connecting bolt II and the connecting bolt III 13 adopt 12.9-grade M14 inner hexagon high-strength bolts.
When in specific use, the upper cutter body 3 and the lower cutter body 2 are correspondingly arranged by aligning the boss 9 and the groove 7, the upper cutter body 3 is connected with the lower cutter body 2 in a closing way through a connecting bolt II penetrating through the threaded hole III 8 and the threaded hole IV 10, then the alloy blade 4 and the threaded sleeve 12 are arranged in the blade clamping mounting groove 11, the connecting bolt III 13 is screwed into the lower cutter body 2 from the lower end thread of the threaded hole II 6, and is gradually screwed into the threaded sleeve 12 to realize the connection between the alloy blade 4 and the lower blade body 2, then, the first connecting bolt penetrates through the first threaded hole 5 and the second threaded hole 6 through threaded connection, so that the lower cutter body 2 and the cutter handle 1 are connected in a clamping manner, then the cutter is integrally arranged on a cutter head of the shield tunneling machine through the cutter handle 1, if a certain part is damaged in the using process, the corresponding part can be replaced by unscrewing the first connecting bolt, the second connecting bolt or the third connecting bolt 13.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a wear-resisting split type shield cutter of removable alloy cutting edge, cutter body which characterized in that: the alloy knife comprises a knife handle, a lower knife body, an upper knife body and an alloy blade, wherein a first threaded hole is formed in the knife handle, a second threaded hole is formed in the lower knife body in a penetrating manner, a first connecting bolt is arranged in the first threaded hole of the knife handle and the second threaded hole of the lower knife body in a threaded connection manner, the first connecting bolt is positioned at the middle lower part in the second threaded hole, the lower knife body is connected with the knife handle through the first connecting bolt, a groove is formed in the upper surface of the lower knife body, a third threaded hole is formed in the groove, the third threaded hole penetrates through the lower knife body, a boss is arranged on the lower surface of the upper knife body, a fourth threaded hole is formed in the boss, the fourth threaded hole penetrates through the upper knife body, a second connecting bolt is arranged in the third threaded hole of the lower knife body and the fourth threaded hole of the upper knife body in, the alloy cutting edge lower extreme is connected and is equipped with the screw sleeve, cutting edge block mounting groove and alloy cutting edge adaptation, alloy cutting edge and screw sleeve are located cutting edge block mounting groove, and alloy cutting edge upper end stretches out upper cutter body upper surface, upper portion is equipped with connecting bolt three through threaded connection in the screw hole two, connecting bolt three upper portion is located in the screw sleeve through threaded connection.
2. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 1, characterized in that: and a nut supporting platform is arranged in the fourth threaded hole, and the nut supporting platform is arranged on the upper part of the fourth threaded hole.
3. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 1, characterized in that: the grooves and the bosses are correspondingly provided with a plurality of groups.
4. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 1, characterized in that: the lower cutter body is a steel casting cutter body, and the upper cutter body is formed by precision casting of wear-resistant materials.
5. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 4, characterized in that: the lower cutter body is made of Q345B steel, and is manufactured by milling and annealing treatment processes.
6. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 4, characterized in that: the upper cutter body is made of chromium-molybdenum alloy, and water toughening treatment at 1120 ℃ is adopted during processing and manufacturing of the upper cutter body.
7. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 1, characterized in that: the alloy blade is made of tungsten carbide hard alloy.
8. The wear-resistant split shield cutter with the replaceable alloy blade and the replaceable cutter body according to claim 1, characterized in that: the connecting bolt I, the connecting bolt II and the connecting bolt III are 12.9-grade M14 inner hexagon high-strength bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499642.0A CN113107508A (en) | 2021-05-06 | 2021-05-06 | Wear-resistant split type shield cutter with replaceable alloy cutting edge and replaceable cutter body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499642.0A CN113107508A (en) | 2021-05-06 | 2021-05-06 | Wear-resistant split type shield cutter with replaceable alloy cutting edge and replaceable cutter body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113107508A true CN113107508A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110499642.0A Pending CN113107508A (en) | 2021-05-06 | 2021-05-06 | Wear-resistant split type shield cutter with replaceable alloy cutting edge and replaceable cutter body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113107508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857510A (en) * | 2021-10-21 | 2021-12-31 | 株洲钻石切削刀具股份有限公司 | Inner-cooling cutting tool |
-
2021
- 2021-05-06 CN CN202110499642.0A patent/CN113107508A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857510A (en) * | 2021-10-21 | 2021-12-31 | 株洲钻石切削刀具股份有限公司 | Inner-cooling cutting tool |
| CN113857510B (en) * | 2021-10-21 | 2023-01-31 | 株洲钻石切削刀具股份有限公司 | Inner-cooling cutting tool |
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Effective date of registration: 20240115 Address after: 207, Block B, No. 20, No.4 Street, Shenyang Economic and Technological Development Zone, Shenyang, Liaoning 110000 Applicant after: Shenyang Shengke Tebairui Tunnel Equipment Co.,Ltd. Address before: 121000 Zhongdong village, Zhong'an Town, Beizhen City, Jinzhou City, Liaoning Province Applicant before: Liaoning Baoxu bentonite Technology Co.,Ltd. |