CN214997659U - Shield cutter head for cutting reinforced concrete - Google Patents
Shield cutter head for cutting reinforced concrete Download PDFInfo
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- CN214997659U CN214997659U CN202120652198.7U CN202120652198U CN214997659U CN 214997659 U CN214997659 U CN 214997659U CN 202120652198 U CN202120652198 U CN 202120652198U CN 214997659 U CN214997659 U CN 214997659U
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Abstract
The utility model provides a shield constructs blade disc for cutting reinforced concrete's shield constructs the blade disc and includes: the toothed fishtail cutter is arranged at the center of the cutter head body; the welding tearing knife group is arranged on the main beam and comprises four layers of welding tearing knives with different knife heights and arranged at intervals; the gauge protection cutter group is arranged on the periphery of the end face of the cutter head body and comprises three layers of gauge protection cutters with different cutter heights and arranged at intervals; the replaceable tearing knife group is arranged on the auxiliary beam and comprises two layers of replaceable tearing knives which are different in knife height and are arranged at intervals; and the scrapers are arranged on the side walls of the main beam and the auxiliary beam. The embodiment can cut off the steel bars in the concrete, reduces the abrasion of the tearing knife with lower knife height, and ensures that the embodiment can carry out tunneling for a longer distance after the reinforced concrete is broken, thereby achieving the purpose of improving the tunneling efficiency.
Description
Technical Field
The utility model relates to a shield constructs the quick-witted field, concretely relates to shield constructs blade disc for cutting reinforced concrete.
Background
In the field of underground engineering, the application of shield construction is more and more extensive, and particularly in the construction of subway tunnels, the advantages of shield construction are particularly obvious. In the construction process of urban subway tunnels, reinforced concrete pile foundations often need to be broken. The strength of the steel bars in the pile foundation is high, and a hob is often arranged on a shield cutter head to cut the shield cutter head off. However, in a soft soil layer, the excavation efficiency of the hob is low, resulting in a long construction period. In addition, compared with a tearing knife, the hob is complex in structure and expensive. Although the existing soft soil cutterhead is high in tunneling efficiency, the pile breaking capacity is poor, or the cutterhead after pile breaking cannot conduct long-distance tunneling.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shield constructs blade disc for cutting reinforced concrete to reach the purpose that improves tunnelling efficiency.
The utility model provides a technical scheme that its technical problem adopted is: a shield cutter head for cutting reinforced concrete, having a cutter head body, a main beam and a secondary beam, the shield cutter head for cutting reinforced concrete comprising: the toothed fishtail cutter is arranged at the center of the cutter head body; the welding tearing knife group is arranged on the main beam and comprises four layers of welding tearing knives with different knife heights and arranged at intervals; the gauge protection cutter group is arranged on the periphery of the end face of the cutter head body and comprises three layers of gauge protection cutters with different cutter heights and arranged at intervals; the replaceable tearing knife group is arranged on the auxiliary beam and comprises two layers of replaceable tearing knives which are different in knife height and are arranged at intervals; and the scrapers are arranged on the side walls of the main beam and the auxiliary beam.
Further, the height of the scraper is h10Wherein h is10＝100～120mm。
Further, the height of the serrated fishtail knife is h0Wherein h is0＝380～420mm。
Further, the welding tearing knife group comprises a first welding tearing knife which is arranged on one side of the main beam close to the toothed fishtail knife, and the height of the first welding tearing knife is h1Wherein h is1＝h0/2+20。
Furthermore, the welding tearing knife group also comprises a second welding tearing knife which is arranged on the outer side of the first welding tearing knife, and the height of the second welding tearing knife is h2Wherein h is2＝h10+(30～50)。
Furthermore, the welding tearing knife group also comprises a third welding tearing knife which is arranged on the inner side of the second welding tearing knife and positioned on the outer side of the first welding tearing knife, and the height of the third welding tearing knife is h3Wherein h is3＝h2+(20～30)。
Furthermore, the second welding tearing knife and the third welding tearing knife are multiple and arranged at intervals, the welding tearing knife group further comprises heightening welding tearing knives which are arranged between the adjacent second welding tearing knives and the adjacent third welding tearing knives or between the adjacent third welding tearing knives, and the height of each heightening welding tearing knife is h4The diameter of the steel bar to be cut is a, wherein h4＝h3+a。
Furthermore, the difference value of the radius of the track where two adjacent heightened welding tearing knives (34) are located is x, wherein x is 300-500 mm.
Further, the replaceable tearing knife group comprises a first replaceable tearing knife and a heightened replaceable tearing knife which are arranged on the auxiliary beam at intervals, wherein the knife height of the first replaceable tearing knife is the same as that of the third welding tearing knife, and the knife height of the heightened replaceable tearing knife is the same as that of the heightened welding tearing knife.
Furthermore, the arc curvature radiuses of the cutting edges of the welding tearing knife group, the replaceable tearing knife group and the gauge protection knife group are all R, wherein R is less than or equal to 400 mm.
The beneficial effects of the utility model are that, this embodiment tears the sword through the welding that sets up that four layers of sword height is different and the interval sets up and the gauge protection sword that three-layer sword height is different and the interval sets up can cut off the reinforcing bar in the concrete, has alleviateed the wearing and tearing of lower sword height moreover, guarantees that this embodiment can also carry out longer distance tunnelling after abolishing reinforced concrete to reach the purpose that improves tunnelling efficiency.
Drawings
The accompanying drawings, which form a part of the present application, 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 invention and not to limit the invention. In the drawings:
fig. 1 is a schematic side view of an embodiment of the present invention;
fig. 2 is a schematic front view of the embodiment of the present invention;
FIG. 3 is a schematic view of a first welding and tearing knife;
FIG. 4 is a schematic view of a second welding and tearing knife;
FIG. 5 is a schematic view of a third welding and tearing knife;
FIG. 6 is a schematic view of a heightened welded tearing knife;
FIG. 7 is a schematic view of a first gage cutter;
FIG. 8 is a sectional view taken along line SS in FIG. 7;
FIG. 9 is a schematic view of a second gage cutter;
FIG. 10 is a sectional view taken along line TT of FIG. 9;
FIG. 11 is a schematic structural view of a third gage cutter;
FIG. 12 is a cross-sectional view of the UU of FIG. 11;
FIG. 13 is a schematic view of a first replaceable tearing knife;
FIG. 14 is a schematic view of a raised replaceable tearing knife;
FIG. 15 is a schematic view of the first replaceable tearing knife installed at the periphery;
FIG. 16 is a schematic view of a first welding and tearing knife edge arc processing structure;
FIG. 17 is a layout view of the serrated fishtail and tearing blade set.
Reference numbers in the figures: 1. a cutter head structural member; 2. a toothed fishtail knife; 31. a first weld rip knife; 32. a second weld rip knife; 33. a third welding tearing knife; 34. heightening a welding tearing knife; 41. a first gage cutter; 42. a second gauge cutter; 43. heightening a gauge protection cutter; 51. a first replaceable tearing knife; 52. heightening a replaceable tearing knife; 6. a scraper; 7. an edge scraper group; 8. a shield body; 9. and (5) main driving.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 17, the embodiment of the utility model provides a shield structure blade disc for cutting reinforced concrete, this shield structure blade disc for cutting reinforced concrete has blade disc body, girder and auxiliary girder, and this shield structure blade disc for cutting reinforced concrete still includes dentate fishtail sword 2, welds and tears knife tackle, gauge knife tackle, removable tearing knife tackle and scraper 6. Wherein, the dentate fishtail knife 2 is arranged at the center of the cutter head body; the welding tearing knife group is arranged on the main beam and comprises four layers of welding tearing knives with different knife heights and arranged at intervals; the gauge protection cutter group is arranged on the periphery of the end face of the cutter head body and comprises three layers of gauge protection cutters with different cutter heights and arranged at intervals; the replaceable tearing knife group is arranged on the auxiliary beam and comprises two layers of replaceable tearing knives which are different in knife height and are arranged at intervals; the scrapers 6 are provided at the side walls of the primary and secondary beams.
The embodiment can cut off the steel bars in the concrete by the welding tearing cutters with different cutter heights and intervals arranged at four layers and the gauge protection cutters with different cutter heights and intervals arranged at three layers, reduces the abrasion of the tearing cutters with lower cutter heights, and ensures that the embodiment can carry out long-distance tunneling after breaking away the reinforced concrete, thereby achieving the purpose of improving the tunneling efficiency.
As shown in fig. 1, in this embodiment, the cutter head body is mounted on a shield body 8, a main drive 9 is connected between the shield body 8 and the cutter head body, a cutter head structural member 1 is arranged behind the cutter head body, and a main beam and a secondary beam are both arranged on the cutter head body. Because the cutter head body, the main beam, the secondary beam, the cutter head structural member 1, the shield body 8 and the main drive 9 are the same as the related structures in the prior art, the structure and the specific connection relation are not repeated here.
The blade height of the scraper 6 in this embodiment is h10Wherein h is10100-120 mm. The height of the dentate fishtail knife 2 is h0Wherein h is0＝380～420mm。
Specifically, the welding tearing knife group includes a first welding tearing knife 31, a second welding tearing knife 32, and a third welding tearing knife 33. The first welding tearing knife 31 is arranged on one side of the main beam close to the dentate fishtail knife 2, and the knife height of the first welding tearing knife 31 is h1Wherein h is1＝h0/2+20. The second welding tearing knife 32 is arranged at the outer side of the first welding tearing knife 31, and the height of the second welding tearing knife 32 is h2Wherein h is2＝h10+ (30-50). The third welding and tearing knife 33 is arranged at the inner side of the second welding and tearing knife 32 and is positioned at the outer side of the first welding and tearing knife 31, and the height of the third welding and tearing knife 33 is h3Wherein h is3＝h2+(20～30)。
The first welding tearing knife 31, the second welding tearing knife 32 and the third welding tearing knife 33 are mainly used for tunneling a soft soil layer after the cutting of the steel bars is finished, and the tunneling efficiency of the soft soil layer can be increased by setting the knife heights.
In this embodiment, each layer of the welding tearing knife with the knife height is at least provided with one welding tearing knife, wherein in this embodiment, the second welding tearing knife 32 and the third welding tearing knife 33 are both provided with a plurality of spaced apart welding tearing knives, the welding tearing knife group further comprises heightened welding tearing knives 34, the heightened welding tearing knives 34 are arranged between the adjacent second welding tearing knife 32 and the adjacent third welding tearing knife 33 or between the adjacent third welding tearing knives 33, and the knife height of the heightened welding tearing knives 34 is h4Diameter of the steel bar to be cutIs a in mm, where h4＝h3+ a. In addition, h is1～h4The units of (A) are all mm.
In the embodiment, the welding tearing knife 34 is heightened to cut the steel bars so as to reduce the abrasion of the first welding tearing knife 31, the second welding tearing knife 32 and the third welding tearing knife 33, thereby realizing that long-distance tunneling can be carried out after the reinforced concrete is broken.
The embodiment can cut the reinforcing steel bars into small sections, and the length of each small section of the reinforcing steel bar depends on the distance between the heightened tearing knives. With particular reference to FIG. 17: the difference value of the radius of the track where the two adjacent heightened welding tearing knives (34) are located is x, wherein x is 300-500 mm.
As shown in fig. 1 and 2, the gauge cutter set in the present embodiment includes a first gauge cutter 41, a second gauge cutter 42, and a third gauge cutter 43. The first gauge cutters 41, the second gauge cutters 42, and the third gauge cutters 43 are alternately arranged at intervals along the outer periphery of the end surface of the cutter head body. Wherein, the height h of the first gauge cutter 415Height h of second welding tearing knife 322The same is true. The height h of the second gauge cutter 426Height h of third welding and tearing knife 333The same is true. The height h of the third gauge cutter 437The height h of the tearing knife 34 for welding with a heighten4The same is true.
By arranging the cutter heights of all layers of the gauge cutter sets in the mode, the wear rate of the gauge cutters with low cutter heights can be reduced, and therefore the tunneling efficiency of the embodiment in a soft soil layer is improved.
The replaceable tearing knife group comprises a first replaceable tearing knife 51 and a heightened replaceable tearing knife 52 which are arranged on the secondary beam at intervals, wherein the knife height h of the first replaceable tearing knife 518Height h of third welding and tearing knife 333Similarly, the height h of the replaceable tearing knife 52 is increased9The height h of the tearing knife 34 for welding with a heighten4The same is true.
In this embodiment, the first replaceable tearing knife 51 and the heightened replaceable tearing knife 52 are arranged on the secondary beam, so that the reinforcing steel bar can be torn by the heightened replaceable tearing knife 52, the first replaceable tearing knife 51 is protected, and the abrasion of the first replaceable tearing knife 51 is reduced.
Specifically, the first replaceable tearing knives 51 are arranged on the secondary beam at intervals, and the heightened replaceable tearing knives 52 can be selectively arranged outside the plurality of first replaceable tearing knives 51 or between two adjacent first replaceable tearing knives 51. Wherein, when the first replaceable tearing knife 51 is located at the outer end of the secondary beam, the first replaceable tearing knife 51 should be arranged in an inclined manner as shown in fig. 15, and the knife height h of the first replaceable tearing knife 51 should be satisfied8Height h of third welding and tearing knife 333The same is true for this condition.
As shown in fig. 16, the cutting edges of the welding tearing knife group, the replaceable tearing knife group and the gauge knife group need to be subjected to arc transition treatment, and the arc curvature radii of the cutting edges of the welding tearing knife group, the replaceable tearing knife group and the gauge knife group are all R in the embodiment, wherein R is less than or equal to 400 mm. The arc transition processing is carried out on the cutting edges of the welding tearing cutter group, the replaceable tearing cutter group and the gauge protection cutter group, so that the practical service lives of the welding tearing cutter group, the replaceable tearing cutter group and the gauge protection cutter group can be prolonged, and the aim of reducing the tunneling cost is fulfilled.
It should be noted that the present embodiment further includes an edge blade group 7 disposed outside the blade group 6, and since the edge blade group 7 has the same structure as the edge blade group in the prior art, the detailed structure and installation position thereof will not be described repeatedly here.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the embodiment can cut off the steel bars in the concrete by the welding tearing cutters with different cutter heights and intervals arranged at four layers and the gauge protection cutters with different cutter heights and intervals arranged at three layers, reduces the abrasion of the tearing cutters with lower cutter heights, and ensures that the embodiment can carry out long-distance tunneling after breaking away the reinforced concrete, thereby achieving the purpose of improving the tunneling efficiency.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and the technical scheme, all can the independent assortment use between technical scheme and the technical scheme.
Claims (10)
1. A shield cutter head for cutting reinforced concrete, having a cutter head body, a main beam and an auxiliary beam, characterized in that the shield cutter head for cutting reinforced concrete comprises:
the toothed fishtail knife (2) is arranged at the center of the cutter head body;
the welding tearing knife group is arranged on the main beam and comprises four layers of welding tearing knives with different knife heights and arranged at intervals;
the gauge protection cutter group is arranged on the periphery of the end face of the cutter head body and comprises three layers of gauge protection cutters with different cutter heights and arranged at intervals;
the replaceable tearing knife set is arranged on the auxiliary beam and comprises two layers of replaceable tearing knives which are different in knife height and are arranged at intervals;
scrapers (6) provided at sidewalls of the primary beam and the secondary beam.
2. Shield cutter head for cutting reinforced concrete according to claim 1, characterised in that the height of the scraper (6) is h10Wherein h is10＝100～120mm。
3. Shield cutter head for cutting reinforced concrete according to claim 2, characterized in that the serrated fishtail cutter (2) has a cutter height h0Wherein h is0＝380～420mm。
4. The shield cutterhead for cutting reinforced concrete according to claim 3, wherein the welding and tearing knife set comprises a first welding and tearing knife (31) arranged on the side of the main beam close to the toothed fishtail knife (2), the first welding and tearing knife (31) having a knife height h1Wherein h is1＝h0/2+20。
5. The shield cutterhead for cutting reinforced concrete according to claim 4, wherein the welding and tearing knife set further includes a second welding and tearing knife (32) disposed outside the first welding and tearing knife (31), the second welding and tearing knife (32) having a knife height h2Wherein h is2＝h10+(30～50)。
6. The shield cutterhead for cutting reinforced concrete according to claim 5, wherein the welding and tearing knife set further includes a third welding and tearing knife (33) disposed inside the second welding and tearing knife (32) and outside the first welding and tearing knife (31), the third welding and tearing knife (33) having a knife height h3Wherein h is3＝h2+(20～30)。
7. The shield cutter head for cutting reinforced concrete according to claim 6, wherein the second welding and tearing knife (32) and the third welding and tearing knife (33) are respectively provided with a plurality of spaced-apart blades, the welding and tearing knife group further comprises a heightened welding and tearing knife (34) which is arranged between the adjacent second welding and tearing knife (32) and the third welding and tearing knife (33) or between the adjacent third welding and tearing knife (33), and the heightened welding and tearing knife (34) has a knife height h4The diameter of the steel bar to be cut is a, wherein h4＝h3+a。
8. The shield cutterhead for cutting reinforced concrete according to claim 7, wherein the difference between the radii of the tracks on which two adjacent heightened welded tearing knives (34) are located is x, wherein x is 300-500 mm.
9. The shield cutterhead for cutting reinforced concrete according to claim 8, wherein the replaceable tearing knife set includes a first replaceable tearing knife (51) and a heightened replaceable tearing knife (52) which are alternately arranged on the secondary beam, wherein the first replaceable tearing knife (51) has the same knife height as the third welding tearing knife (33), and the heightened replaceable tearing knife (52) has the same knife height as the heightened welding tearing knife (34).
10. The shield cutterhead for cutting reinforced concrete according to claim 9, wherein the arc curvature radius of the cutting edges of the welding tearing cutter set, the replaceable tearing cutter set and the gauge cutter set are all R, wherein R is less than or equal to 400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120652198.7U CN214997659U (en) | 2021-03-31 | 2021-03-31 | Shield cutter head for cutting reinforced concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120652198.7U CN214997659U (en) | 2021-03-31 | 2021-03-31 | Shield cutter head for cutting reinforced concrete |
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| Publication Number | Publication Date |
|---|---|
| CN214997659U true CN214997659U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120652198.7U Active CN214997659U (en) | 2021-03-31 | 2021-03-31 | Shield cutter head for cutting reinforced concrete |
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| CN (1) | CN214997659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961739A (en) * | 2022-05-16 | 2022-08-30 | 中铁五局集团有限公司 | Construction method for re-excavation and expanded excavation of abandoned tunnel |
| CN115030734A (en) * | 2022-08-15 | 2022-09-09 | 北京城建轨道交通建设工程有限公司 | Cutter head and cutter configuration method for shield cutting of large-diameter reinforced concrete pile foundation |
-
2021
- 2021-03-31 CN CN202120652198.7U patent/CN214997659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961739A (en) * | 2022-05-16 | 2022-08-30 | 中铁五局集团有限公司 | Construction method for re-excavation and expanded excavation of abandoned tunnel |
| CN115030734A (en) * | 2022-08-15 | 2022-09-09 | 北京城建轨道交通建设工程有限公司 | Cutter head and cutter configuration method for shield cutting of large-diameter reinforced concrete pile foundation |
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