CN210422625U - Wear-resistant cutter ring of shield machine - Google Patents
Wear-resistant cutter ring of shield machine Download PDFInfo
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- CN210422625U CN210422625U CN201921583425.4U CN201921583425U CN210422625U CN 210422625 U CN210422625 U CN 210422625U CN 201921583425 U CN201921583425 U CN 201921583425U CN 210422625 U CN210422625 U CN 210422625U
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- cutter ring
- ring body
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- cutter
- wearing layer
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Abstract
The utility model belongs to the technical field of the shield constructs the cutter, concretely relates to shield constructs quick-witted wear-resisting cutter ring. The problem of among the prior art shield constructs that the cutter ring wearing layer drops easily and causes cutter ring life to reduce is solved, technical scheme is: including cutter ring body (1) and wearing layer (2), the outer fringe of cutter ring body (1) is provided with first recess (3), first recess (3) are ring shape, all the build-up welding has wearing layer (2) in both sides of cutter ring body (1), the outer fringe of cutter ring body (1) and first recess (3). The utility model discloses can prevent that the wearing layer from droing from the cutter ring body, increase the life of cutter ring, be applicable to the manufacturing of shield structure machine cutter ring.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the cutter, concretely relates to shield constructs quick-witted wear-resisting cutter ring.
Background
The shield machine is widely applied to underground engineering, tunnel tunneling and other operations, and has the advantages of high working efficiency, good safety performance, economy and environmental protection. The cutter is arranged on a cutter head of the shield machine, a disc cutter or a serrated knife is mostly adopted to break rocks when the shield machine carries out tunneling operation, and an auxiliary scraper is adopted to scrape broken rocks and repair a tunnel wall of a well.
In order to increase the wear resistance of the cutter, one method is to improve the hardness of the cutter ring body, but the toughness of the cutter ring is inevitably reduced, in engineering practice, for stratums with strong abrasiveness, such as quartz rock, sandstone, weathered red rock, fractured conglomerate and the like and complex stratums, the requirement of the stratums is met by simply improving the hardness of materials, and the method is suitable for the contrary by sacrificing the toughness of the cutter; the other method is to build up a wear-resistant layer on the cutter, so that the surface of the cutter is further enhanced while the impact toughness of the existing cutter is maintained or improved. Surfacing is an economical and rapid process method for surface enhancement and is widely applied to the manufacturing and remanufacturing processes of mechanical parts.
The existing surfacing method is mainly applied to oxyacetylene flame surfacing and plasma surfacing, wherein the flame surfacing process needs to preheat and heat a substrate to a higher temperature, a sample is heated seriously, and a heat affected zone is large, so that the thermal deformation and the stress are large; the preheating temperature of the reverse plasma surfacing substrate is low, the energy density of a welding gun is high, the heating and cooling speeds are high, the heat affected zone is small, the thermal deformation and the stress are small, and the tissue obtained by rapid solidification is very fine, so that the surface smoothness, the bonding strength, the compactness and the plasticity of the plasma surfacing layer are all better than those of a flame surfacing layer. Plasma surfacing is divided into manual plasma surfacing and numerical control plasma surfacing, wherein the surfacing layer of a product of the manual plasma surfacing has obvious welding pass, uneven surface of the welding layer and rough appearance; in addition, the manual plasma surfacing has low working efficiency, high labor intensity and higher requirement on the skill level of an operator, and the size and the quality of a surfacing product are difficult to control.
Through search, the Chinese patent application (publication number: CN107625501A, published: 2018.01.19) discloses a method for surfacing tungsten carbide cutter ring by plasma arcs, namely, surfacing tungsten carbide powder by plasma arcs on two sides of the outer edge of the cutter ring so as to improve the wear resistance and the impact resistance of the cutter ring. The wear-resistant layer is not surfacing-welded at the maximum excircle of the cutter ring, so that the body of the excircle of the cutter ring is easily worn in advance, the wear-resistant layers on the two sides are hollowed, the service life is limited, and the wear-resistant layers on the two sides are easy to fall off, so that the service life of the cutter ring is further shortened.
SUMMERY OF THE UTILITY MODEL
To shield among the prior art shield structure machine cutter ring wearing layer drop easily and cause the problem that cutter ring life reduces, the utility model provides a shield structure machine wear-resisting cutter ring, its aim at: prevent that the wearing layer from droing from the cutter ring body, increase the life of cutter ring.
The utility model adopts the technical scheme as follows:
the utility model provides a shield constructs quick-witted wear-resisting cutter ring, includes the cutter ring body, the outer fringe of cutter ring body is provided with first recess, the opening direction of first recess is unanimous with the radial of cutter ring body, all the build-up welding has the wearing layer in the both sides of cutter ring body, the outer fringe of cutter ring body and the first recess.
After adopting this technical scheme, the area of contact increase of cutter ring body and wearing layer, the wearing layer is difficult to drop from the cutter ring body, wearing layer thickness in the first recess is bigger, can bear bigger impact load, and the cutter ring body can restrict the wearing layer in the first recess and move on the vertical direction of cutter ring body, the bonding force through cutter ring body rather than wearing layer and cutter ring body resists the load that the shield constructs the machine direction of advance and transmits, the wearing layer is more difficult for droing, the life of wear-resisting cutter ring is longer.
Preferably, the side of cutter ring body is provided with the second recess, the build-up welding has the wearing layer in the second recess.
After the technical scheme is adopted, the contact area between the cutter ring body and the wear-resistant layer is further increased, the wear-resistant layer is not easy to fall off from the cutter ring body, and the service life of the wear-resistant cutter ring is longer.
Preferably, the second groove is circular, and the center of the circular ring is the center of the cutter ring body.
After the technical scheme is adopted, the abrasion degree of the abrasion-resistant layer on the side surface of the cutter ring body is ensured to be the same, and the cutter ring body is stressed uniformly.
Preferably, the second grooves are provided with a plurality of grooves, each second groove is cylindrical, and the plurality of second grooves are annularly arranged by taking the center of the cutter ring body as the center of a circle.
When the shield machine works, the wear-resistant layer is stressed by the force on the tangential direction of the cutter ring body, the force on the tangential direction is borne by the bonding force of the wear-resistant layer and the cutter ring body, after the technical scheme is adopted, the second groove can limit the displacement of the wear-resistant layer along the tangential direction, the cutter ring body bears the force on the tangential direction, the wear-resistant layer is more difficult to drop, and the service life is longer.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the outer fringe of cutter ring body is provided with first recess, the area of contact increase of cutter ring body and wearing layer, the wearing layer is difficult to drop from the cutter ring body, wearing layer thickness in the first recess is bigger, can bear bigger impact load, and the cutter ring body can restrict the wearing layer in the first recess and move on the vertical direction of cutter ring body, the load that the shield constructs the machine direction of advance and transmits is resisted through the cutter ring body rather than the bonding force of wearing layer and cutter ring body, the wearing layer is more difficult for droing, the life of wear-resisting cutter ring is longer.
2. The side of cutter ring body is provided with the second recess, and the area of contact of cutter ring body and wearing layer further increases, and the wearing layer is difficult for droing from the cutter ring body, and the life of wear-resisting cutter ring is longer.
3. The second groove is in a ring shape, the center of the ring is the center of the cutter ring body, the abrasion degree of the abrasion-resistant layer on the side face of the cutter ring body is guaranteed to be the same, and the cutter ring body is stressed uniformly.
4. The second recess has the several, and uses the center of cutter ring body to set up as centre of a circle annular, and the displacement of wearing layer along tangential direction can be restricted to the second recess, makes the cutter ring body bear this tangential direction's power, and the wearing layer is more difficult for droing, and life is longer.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of a cutter ring body;
fig. 4 is a partially enlarged view of a portion a in fig. 2.
Wherein, 1-cutter ring body, 2-wear-resistant layer, 3-first groove, 4-second groove.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 4.
Example one
The utility model provides a shield constructs quick-witted wear-resisting cutter ring, includes cutter ring body 1, the outer fringe of cutter ring body 1 is provided with first recess 3, the opening direction of first recess 3 is radially unanimous with cutter ring body 1, all the build-up welding has wearing layer 2 in the both sides of cutter ring body 1, the outer fringe of cutter ring body 1 and the first recess 3. Set up like this, the area of contact increase of cutter ring body and wearing layer, the wearing layer is difficult to drop from the cutter ring body, and the wearing layer thickness in the first recess is bigger moreover, can bear bigger cutter ring body 1 radial impact load. In addition, the cutter ring body 1 can limit the wear-resistant layer in the first groove to move in the vertical direction of the cutter ring body, the load transmitted in the advancing direction of the shield tunneling machine is resisted through the cutter ring body instead of the bonding force between the wear-resistant layer and the cutter ring body, the wear-resistant layer is not easy to fall off, and the service life of the wear-resistant cutter ring is longer.
And the upper side surface and the lower side surface of the cutter ring body 1 are provided with second grooves 4, and wear-resistant layers are welded in the second grooves 4 in a surfacing mode. In this embodiment, the second groove 4 is circular, and the center of the circular ring is the center of the cutter ring body 1.
Example two
The structure of this embodiment is substantially the same as that of the first embodiment, except that there are a plurality of second grooves 4, the specific number is set according to practical situations, each second groove 4 is cylindrical, and the second grooves 4 are annularly arranged around the center of the cutter ring body 1. Shield constructs machine during operation, the wearing layer receives the ascending power of cutter ring body tangential direction, and this tangential direction's power is undertaken by wearing layer 2 and cutter ring body 1's adhesion, and after setting up like this, the cutter ring body can restrict the wearing layer 2 in the second recess 4 along tangential direction's displacement, makes cutter ring body 1 rather than the adhesion between cutter ring body 1 and the wearing layer 2 and resists this tangential direction's power, and the wearing layer is more difficult for droing, and life is longer.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (4)
1. The utility model provides a shield constructs quick-witted wear-resisting cutter ring which characterized in that: including cutter ring body (1), the outer fringe of cutter ring body (1) is provided with first recess (3), the opening direction of first recess (3) is radially unanimous with cutter ring body (1), all surfacing has wearing layer (2) in both sides of cutter ring body (1), the outer fringe of cutter ring body (1) and first recess (3).
2. The shield tunneling machine wear-resistant cutter ring according to claim 1, wherein a second groove (4) is formed in the side face of the cutter ring body (1), and a wear-resistant layer is deposited in the second groove (4).
3. The shield tunneling machine wear-resistant cutter ring according to claim 2, wherein the second groove (4) is circular and the center of the circular is the center of the cutter ring body (1).
4. The shield tunneling machine wear-resistant cutter ring according to claim 2, wherein the number of second grooves (4) is several, each second groove (4) is cylindrical in shape, and the several second grooves (4) are annularly arranged around the center of the cutter ring body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583425.4U CN210422625U (en) | 2019-09-23 | 2019-09-23 | Wear-resistant cutter ring of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583425.4U CN210422625U (en) | 2019-09-23 | 2019-09-23 | Wear-resistant cutter ring of shield machine |
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| Publication Number | Publication Date |
|---|---|
| CN210422625U true CN210422625U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921583425.4U Active CN210422625U (en) | 2019-09-23 | 2019-09-23 | Wear-resistant cutter ring of shield machine |
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| CN (1) | CN210422625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294002A (en) * | 2021-12-28 | 2022-04-08 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
-
2019
- 2019-09-23 CN CN201921583425.4U patent/CN210422625U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294002A (en) * | 2021-12-28 | 2022-04-08 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
| CN114294002B (en) * | 2021-12-28 | 2022-12-13 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
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