CN212535676U - Large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum - Google Patents
Large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum Download PDFInfo
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- CN212535676U CN212535676U CN202021245594.XU CN202021245594U CN212535676U CN 212535676 U CN212535676 U CN 212535676U CN 202021245594 U CN202021245594 U CN 202021245594U CN 212535676 U CN212535676 U CN 212535676U
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Abstract
A large-diameter composite shield cutter head suitable for a water-rich sand-gravel stratum is of a spoke panel type structure and comprises main spokes and a fan-shaped area, wherein the main spokes are of a radial structure, the number of the main spokes is 6, the main spokes are arranged at the center of a cutter head body in an angle of 60 degrees, 1 quadruple hob is installed in the middle of each main spoke, 16 single-edge hobs and 8 double-edge hobs are installed on a straight-line-shaped cutter beam on each main spoke, 24 edge scrapers are installed on the main spokes along two sides of the outer diameter edge of the cutter beam, 1 overedging hob is installed in a box body of the cutter head body in a manner of extending out of the periphery, and 66 main cutters are symmetrically installed on the main spokes along two sides of the cutter beam in a concentric circle manner; 6 fan-shaped areas are arranged among the main spokes, and 21 single-edge hobs are arranged in the fan-shaped areas. The utility model discloses the aperture opening ratio is big, can improve tunnelling speed, effectively prevent soil storehouse center mud cake production, reinforcing blade disc life at the tunnelling in-process.
Description
Technical Field
The utility model relates to a shield constructs quick-witted technical field, concretely relates to compound shield of major diameter blade disc suitable for rich water sandy gravel stratum.
Background
With the continuous development of scientific technology and the continuous acceleration of urbanization process, the shield construction method has gradually replaced open excavation, shallow excavation and other construction methods with the advantages of safety, high efficiency, high mechanical performance, small disturbance to the surrounding environment and stratum and the like, and becomes a preferred construction method for building urban underground tunnels.
When the water-rich gravel stratum is tunneled, the permeability of the gravel stratum is high, so that the amount of generated pore diving water is large, and the tunnel surface is stable and is difficult to control; the tunneling speed in a sandy gravel stratum is low, a cutter head and a cutter are easy to wear, the cutter head is easy to clamp, and the pressure maintaining and cutter changing are difficult; the tunnel passes through the existing building and construction, the existing line and the like, and the requirement on stratum settlement control is high. As the opening rate of the panel type cutter head is smaller, large-particle-size pebbles are difficult to rapidly enter the soil cabin in the shield tunneling process, the pebbles and the cutter are easy to wear, and the normal service life of the cutter is greatly reduced.
Disclosure of Invention
The utility model discloses according to prior art's not enough, a major diameter composite shield constructs blade disc suitable for rich water sandy gravel stratum is provided, this blade disc mainly to rich water ovum gravel stratum tunnelling speed slow, blade disc and the easy wearing and tearing scheduling problem of cutter, has increased the aperture opening ratio of blade disc, can realize higher tunnelling efficiency, can prevent to produce the mud cake simultaneously.
In order to solve the technical problem, the utility model provides a large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum, which comprises a main spoke and a fan-shaped area, wherein the main spoke and the fan-shaped area are respectively arranged on the front surface of the cutter head;
the main spokes are in a radial structure, 6 main spokes are arranged, and are annularly and rotatably arranged at the central position of the cutter head body in an angle of 60 degrees;
the center of the main spoke is provided with 1 quadruple hob, the straight-line-shaped cutter beam on the main spoke is provided with 16 single-edge hobs and 8 double-edge hobs, and the two sides of the edge of the outer diameter of the cutter beam on the main spoke are provided with 24 edge scrapers;
66 main cutting knives are symmetrically arranged on the main spoke along two sides of the knife beam in a concentric circle manner;
the number of the small panels is 6, the small panels and the main spokes are arranged at intervals, and 21 single-edge hobs are mounted on the small panels;
preferably, 1 overexcavation hob is arranged in the box body of the cutter head body and extends out of the periphery of the box body;
as a preferred scheme, the cutter is initially installed on the cutter head in a hobbing cutter mode, the hobbing cutter is installed through two wedge-shaped blocks, a tensioning block and a bolt to lock the cutter shaft, the cutter can be quickly installed and disassembled, and the hobbing cutter can be interchanged with the advanced cutter.
As a preferred scheme, the protective cutter is arranged at the outer edge of the opening of the cutter head, so that the abrasion and the fragmentation of the cutter head are integrally prevented, and the abrasion resistance of the cutter head is improved;
as a preferred scheme, the partition plate is provided with a stirring rod, and the side surface of the stirring rod is provided with a high-pressure water spray nozzle, so that the bracket of the cutter head can be effectively washed, and the formation of mud cakes of the partition plate of the soil bin can be prevented;
as a preferred scheme, the center of the cutter head is provided with a high-pressure water flushing port, so that the phenomenon that mud cakes are formed in the center of the cutter head can be effectively prevented.
As a preferred scheme, the cutter head is provided with a wear detection device, so that the wear condition of a hob in a certain track area can be detected, and the cutter head body can be prevented from being damaged by floating stones.
The utility model has the advantages that:
1. the utility model discloses a spoke panel mounted blade disc of big aperture ratio, at the shield tunnelling in-process, big particle diameter gravel gets into the soil cabin fast, greatly reduces gravel and cutter and takes place the friction and collision, has increased the normal life of cutter.
2. The utility model discloses install a plurality of stirring rods on the baffle, be provided with the high pressure water jet to the stirring rod side, can carry out effectual washing to the bracket of blade disc, can prevent the formation of soil storehouse baffle mud cake to install a plurality of high pressure water at the center of blade disc and wash mouthful, can effectually prevent the phenomenon of blade disc center knot mud cake.
3. The utility model discloses strengthen hobbing cutter cutting edge thickness, the cutter body surface hardens and abrasive resistance, makes the hobbing cutter have better toughness, improves its wear resistance, effectively reduces the number of times that tunnelling in-process cutter was changed.
4. The utility model discloses a strenghthened type scraper design, scraper carbide adopt the coarse grain jumbo size, improve the wear resistance and the shock resistance of alloy, effectively reduce the number of times that the in-process cutter of tunnelling was changed equally.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-main spoke, 2-sector area, 3-single-edge hob, 4-double-edge hob, 5-main cutter, 6-edge scraper, 7-cutter, 8-abrasion detection strip, 9-quadruple hob, 10-cutter box protection cutter, 11-abrasion detection strip, 12-overexcavation hob and 13-additive injection opening protection cutter.
Detailed Description
As shown in fig. 1, the large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum comprises a main spoke and a fan-shaped area, wherein the main spoke (1) and the fan-shaped area (2) are respectively arranged on the front surface of the cutter head; the cutter head body is a spoke panel type cutter head with a large opening ratio; the main spokes (1) are in a radial structure, and 6 main spokes (1) are arranged and annularly and rotatably arranged at the central position of the cutter head body in an angle of 60 degrees; 6 fan-shaped areas are arranged at intervals with the main spokes; further, the shield cutter head is a spoke panel type cutter head with a large opening rate, and the opening rate of the cutter head is 45%.
Furthermore, the middle of the main spoke (1) is provided with 1 quadruple hob (9).
Furthermore, 16 single- edge hobs 3 and 8 double-edge hobs 4 are arranged on the straight-line-shaped cutter beam on the main spoke (1).
Furthermore, 24 edge scrapers (6) are arranged on the main spoke (1) along the two sides of the edge of the outer diameter of the cutter beam.
Furthermore, 66 main cutting knives (5) are symmetrically arranged on the main spoke (1) along two sides of the knife beam in a concentric circle mode.
Furthermore, 6 welding type cutting knives (7) are arranged on the main spoke (1).
Furthermore, the fan-shaped area (2) is provided with 21 single-edge hobs (3).
Furthermore, 4 additive injection opening protection knives (13) are installed on the fan-shaped area (2), and 4 additive injection opening protection knives (13) are installed on the main spoke 6.
Furthermore, the sector area (2) is provided with 3 hydraulic wear detection strips (8).
Furthermore, 1 super-excavation hob (12) which extends out of the periphery and is provided with a size of 50mm is arranged in the box body of the cutter head body, and the tunneling attitude can be well controlled during tunneling.
Furthermore, 40 knife box protection knives (10) are arranged around the single-edge hob outside the fan-shaped area (2).
Further, the blade disc panel openly covers Hardox600 antifriction plate entirely, and the blade disc back covers bar Hardox600 antifriction plate, and the blade disc periphery adopts wear-resisting alloy piece full cover, increases the wearability.
Furthermore, the edge scraper (6) is made of coarse-particle large-size hard alloy, so that the wear resistance and the impact resistance of the alloy are improved, and the frequency of cutter replacement in the tunneling process is effectively reduced.
Further, the cutter head adopts the mode of middle support, and the soil bin baffle is fixed, and bracket and puddler carry out effectual stirring to the soil in the soil bin when the cutter head is rotatory, and the center is difficult for the caking mud cake.
Further, the blade disc is provided with 5 initiative puddlers and 5 passive puddlers, is provided with the high pressure water jet on 3 passive puddlers, can wash the blade disc back or bracket, can effectively prevent soil storehouse center mud cake and produce.
Furthermore, the cutter head is provided with a wear detection device, so that the wear condition of a hob in a certain track area can be detected, and the cutter head body of the cutter head is prevented from being damaged by floating stones.
The utility model discloses the aperture ratio is big, can improve tunnelling speed, effectively prevent soil storehouse center mud cake production, adjustable tunnelling time control gesture, reinforcing major diameter cobble grain discharge rate, reduce stifled pipe emergence probability of dregs, reinforcing blade disc life at the tunnelling in-process, promotes shield structure machine life, reaches safety, energy-conservation, efficient subway interval shield and constructs the construction. For convenience of transportation, the cutter head is in a 2+1 block structure, and is subjected to downhole assembly after final welding is completed in a construction site; a hob, a scraper and a super digging cutter are arranged on the cutter head, the exchange of the cutters can be flexibly adjusted according to specific stratum characteristics, and the special requirements of shield posture adjustment and the like during small curve construction and tunneling in upper soft and lower hard stratums can be met by the arrangement of the super digging cutter.
Claims (6)
1. The utility model provides a compound shield of major diameter blade disc suitable for rich water sandy gravel stratum which characterized in that: the main spoke and the fan-shaped area (2) are respectively arranged on the front surface of the cutter head; the cutter head body is a spoke panel type cutter head with a large opening ratio; the main spokes (1) are in a radial structure, and 6 main spokes (1) are arranged and annularly and rotatably arranged at the central position of the cutter head body in an angle of 60 degrees; there are 6 sector areas, and the sector areas are arranged at intervals with the main spoke.
2. The large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum according to claim 1, characterized in that: the middle of the main spoke (1) is provided with 1 quadruple hob (9);
16 single-edge hobs (3) and 8 double-edge hobs (4) are arranged on the straight-line-shaped cutter beam on the main spoke (1);
24 edge scrapers (6) are arranged on the two sides of the edge of the outer diameter of the cutter beam on the main spoke (1);
66 main cutting knives (5) are symmetrically arranged on the main spoke (1) along two sides of the knife beam in a concentric circle manner;
the main spoke (1) is provided with 6 cutting knives (7);
the fan-shaped area (2) is provided with 21 single-edge hobs (3);
4 additive injection port protection knives (13) are installed on the fan-shaped area (2), and 4 additive injection port protection knives (13) are installed on the main spoke 6;
the fan-shaped area (2) is provided with 3 hydraulic wear detection strips (8);
1 50mm super-digging hobs (12) extending out from the periphery are arranged in the box body of the cutter head body;
40 knife box protection knives (10) are arranged around the single-edge hob outside the fan-shaped area (2).
3. The large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum according to claim 1, characterized in that: the blade disc main part be spoke panel type structure, its opening rate 45%, the blade disc panel openly covers Hardox600 antifriction plate entirely, the blade disc back covers bar Hardox600 antifriction plate, the blade disc periphery adopts wear-resisting alloy piece all standing.
4. The large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum according to claim 2, characterized in that: the edge scraper (6) is made of coarse-particle large-size hard alloy.
5. The large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum according to claim 1, characterized in that: the cutter head adopts the mode of middle support, and the soil bin baffle is fixed, and bracket and stirring rod carry out effectual stirring to the soil in the soil bin when the cutter head is rotatory, and the center is difficult for the caking mud cake.
6. The large-diameter composite shield cutter head suitable for the water-rich sandy gravel stratum according to claim 1, characterized in that: the blade disc is provided with 5 initiative puddlers and 5 passive puddlers, and 3 of them are provided with the high pressure water jet on the passive puddler, can wash the blade disc back or bracket, can prevent effectively that soil storehouse center mud cake from producing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021245594.XU CN212535676U (en) | 2020-07-01 | 2020-07-01 | Large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021245594.XU CN212535676U (en) | 2020-07-01 | 2020-07-01 | Large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum |
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| CN212535676U true CN212535676U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021245594.XU Active CN212535676U (en) | 2020-07-01 | 2020-07-01 | Large-diameter composite shield cutter head suitable for water-rich sandy gravel stratum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165249A (en) * | 2021-12-08 | 2022-03-11 | 北京市市政四建设工程有限责任公司 | Muddy water and soil pressure double-mode shield tunneling machine cutter head suitable for complex stratum |
-
2020
- 2020-07-01 CN CN202021245594.XU patent/CN212535676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165249A (en) * | 2021-12-08 | 2022-03-11 | 北京市市政四建设工程有限责任公司 | Muddy water and soil pressure double-mode shield tunneling machine cutter head suitable for complex stratum |
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