CN216110736U - Cutter head structure of shield machine - Google Patents
Cutter head structure of shield machine Download PDFInfo
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- CN216110736U CN216110736U CN202122757345.XU CN202122757345U CN216110736U CN 216110736 U CN216110736 U CN 216110736U CN 202122757345 U CN202122757345 U CN 202122757345U CN 216110736 U CN216110736 U CN 216110736U
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Abstract
The utility model relates to the technical field of shield tunneling machine equipment, and discloses a shield tunneling machine cutter head structure which comprises a shield tunneling machine cutter head, wherein a main cutter beam and an auxiliary cutter beam which are alternately arranged in an angled manner are fixed on the shield tunneling machine cutter head; the center part of the main cutter beam is provided with center hobs side by side at equal intervals, the center of the main cutter beam is provided with a front hob at the side far away from the center hob, two sides of the edge of the main cutter beam are uniformly and symmetrically provided with front scrapers, and the end part of the outer side of the main cutter beam is provided with an edge scraper; the outer side end of each auxiliary cutter beam is provided with a peripheral hob, the number of the peripheral hobs is 12, and 3 peripheral hobs are distributed at the outer side end of each auxiliary cutter beam in an equal angle; and a central scraper is arranged at the positions of the main cutter beam and the auxiliary cutter beam, which are close to the central hob. According to the utility model, the number of the peripheral hobs is increased, so that the track number of the peripheral hobs is increased, the rock breaking capacity of the shield cutter head is improved, the diameter of the shield cutter head is increased, and the turning in a small-radius hard rock stratum can be realized.
Description
Technical Field
The utility model relates to the technical field of shield tunneling machine equipment, in particular to a cutter head structure of a shield tunneling machine.
Background
The shield method is characterized in that the shield method is used for constructing the underground tunnel, the construction operation is carried out underground except for vertical shaft construction, ground traffic is not influenced in the construction process, noise and vibration influences on surrounding residents can be reduced, the construction is not influenced by weather such as wind, rain and the like, and the shield method has the advantages of safety, high efficiency, high mechanical performance and small disturbance and becomes one of the first-choice construction methods for constructing the urban underground tunnel.
The existing sea-Ruike S650 shield machine is a soft soil cutter head, the rock breaking strength which can be borne by the shield cutter head is 80-120Mpa, when the existing sea-Ruike S650 shield machine encounters a hard rock stratum, a cutter breaking phenomenon caused by large difference of the rigidity of the stratum rock-soil body is easily generated, and the cutter ring is cracked and a cutter shaft is damaged in severe cases. In addition, the excavation diameter of the conventional sea Rake S650 is 6410mm, the turning requirement of a hard rock stratum with a small radius of 300m is difficult to meet, and the edge hob is frequently replaced or directly clamped when the hard rock stratum with the small radius of the shield machine is caused by insufficient excavation diameter of the cutterhead, so that great social construction period influence and credit economic loss are caused to a construction unit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cutter head structure of a shield machine, which solves the problems that the existing shield machine cannot break hard rock strata and cannot carry out small-radius tunneling construction.
In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a cutter head structure of a shield tunneling machine, which comprises a shield tunneling cutter head,
the shield cutter head is fixedly provided with a main cutter beam and an auxiliary cutter beam which are alternately arranged at an angle;
the center of the main cutter beam is provided with center hobs side by side at equal intervals, the side of the center of the main cutter beam, which is far away from the center hob, is provided with a front hob, two sides of the edge of the main cutter beam are uniformly and symmetrically provided with front scrapers, and the end part of the outer side of the main cutter beam is provided with an edge scraper;
peripheral hobs are mounted at the outer side end of each auxiliary cutter beam, the number of the peripheral hobs is 12, and 3 the peripheral hobs are distributed at the outer side end of each auxiliary cutter beam in an equal angle;
and a central scraper is arranged at the position, close to the central hob, of the main cutter beam and the auxiliary cutter beam.
Furthermore, the main knife beams are distributed in a cross shape, the auxiliary knife beams are distributed in a Y shape, and the included angle between each two adjacent main knife beams and each two adjacent auxiliary knife beams is 45 degrees.
Furthermore, the surface of the auxiliary knife beam is fixedly connected with a wear-resistant composite steel plate.
Furthermore, foam nozzles are arranged on the main knife beam and the auxiliary knife beam.
Further, all install wearing and tearing on main sword roof beam and the vice sword roof beam and detect the sword, wearing and tearing detect the sword and are used for real-time supervision cutter degree of wear.
Furthermore, a plurality of tearing knives are distributed on the auxiliary knife beam.
Furthermore, wear-resisting steel plates are inlaid in the periphery of the shield cutter head.
Further, the diameter of the shield cutterhead is 6480 mm.
The utility model discloses the following technical effects:
(1) by adopting 12 peripheral hobs, on one hand, the track number of the peripheral hobs is increased, and the rock breaking capacity of the shield cutterhead is improved; on the other hand, the diameter of the shield cutter head is increased, the excavation diameter is increased, and the planar turning in a small-radius hard rock stratum of 300m is facilitated.
(2) According to the utility model, the opening rate of the cutter head reaches 31%, so that rock and soil bodies cut from the face in front of the cutter head can be effectively ensured to enter the soil bin and then be discharged by the spiral conveyor, and the risk of slime of the cutter head is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of a cutter head structure of a shield tunneling machine according to the present invention;
reference numerals: 1. a main cutter beam; 2. a secondary knife beam; 3. a central hob; 4. a front hob; 5. a peripheral hob; 6. a center scraper; 7. a front scraper; 8. an edge scraper; 9. a foam nozzle; 10. a wear detection knife; 11. and (4) a tearing knife.
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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the utility model provides a cutter head structure of a shield tunneling machine, which comprises a shield cutter head, wherein a main cutter beam 1 and an auxiliary cutter beam 2 which are alternately arranged at an angle are fixed on the shield cutter head, the main cutter beam 1 is distributed in a cross shape, the auxiliary cutter beam 2 is distributed in a Y shape, an included angle between two adjacent main cutter beams 1 and the auxiliary cutter beam 2 is 45 degrees, and the main cutter beam 1 and the auxiliary cutter beam 2 form a bearing structure of the shield cutter head;
the central part of the main cutter beam 1 is provided with 8 central hobs 3 side by side at equal intervals, the central hobs 3 are 17 inches and 175mm in height and are used for crushing the central hard rock stratum of the face, and the 8 central hobs 3 can effectively reduce large torque in the hard rock stratum, reduce energy consumption of a shield machine and improve tunneling efficiency; the main cutter beam 1 is provided with 21 front hobs 4, the front hobs 4 are 17 inches and 175mm in height, 6 front hobs are arranged on the right main cutter beam 1 at equal intervals, 5 front hobs are arranged on the rest three main cutter beams 1 at equal intervals, and the front hobs 4 are mainly used for crushing hard rock strata inside the outer edge of the center of the face; front scrapers 7 are respectively arranged in front of and behind the rolling trace of the front hob 4, the front scrapers 7 are 44 in number and are distributed on two sides of the main hob beam 1, 12 scrapers are respectively arranged on two sides of each main hob beam 1 in the horizontal direction, 10 scrapers are respectively arranged on two sides of each main hob beam 1 in the vertical direction, an edge scraper 8 is arranged at the side end of each main hob beam 1, and the edge scraper 8 is used for assisting the front hob 4 and the peripheral hob 5 to crush rock and soil bodies on the tunnel face;
the outer side end of each auxiliary cutter beam 2 is provided with a peripheral hob 5, the peripheral hob 5 is 17 inches, the height is 175mm, the number of the peripheral hobs 5 is 12, 3 peripheral hobs 5 are distributed at equal angles at the outer side end of each auxiliary cutter beam 2, and the peripheral hobs 5 are used for crushing hard rock strata at the edge to form an effective overexcavation gap;
and a central scraper 6 is arranged on the main cutter beam 1 and the auxiliary cutter beam 2 close to the central hob 3.
When the shield tunneling machine is pushed forwards, the central scraper 6, the front scraper 7 and the edge scraper 8 rotate along with the cutter head to generate axial (along the advancing direction of the tunnel) shearing force and radial (in the direction of the rotation tangent line of the cutter head) cutting force on the soil body of the excavation surface, and the soil body in front of the excavation surface is cut off continuously.
According to the cutter head structure of the shield tunneling machine, the hard rock stratum is extruded by the central hob 3, the front hob 4 and the peripheral hob 5, and the cutting action of the central scraper 6, the front scraper 7 and the peripheral scrapers is matched, so that the high-efficiency tunneling of the shield tunneling machine in the hard stratum can be guaranteed. The rock breaking strength of the cutter head of the original sea Rake S650 shield machine capable of bearing is 80-120MPa, after being modified, the rock breaking strength of the cutter head structure of the shield machine can reach 193MPa, and in addition, the turning requirement of a hard rock stratum with a small radius of 300m can be met due to the fact that the excavation radius is increased.
Preferably, the cutterhead panel of the auxiliary knife beam 2 is fixedly connected with a wear-resistant composite steel plate with the thickness of 6mm +6mm, and the function of protecting the shield cutterhead is achieved.
Preferably, 7 foam nozzles 9 are provided on the main blade beam 1 and the sub blade beam 2. The foam nozzle 9 can add a foaming agent in real time according to the slag discharging condition and the property of the slag soil, ensure the slag discharging effect through the improvement of the slag soil and improve the shield tunneling efficiency.
Preferably, all install wearing and tearing on main sword roof beam 1 and the vice sword roof beam 2 and detect sword 10, wearing and tearing detect sword 10 and are used for real-time supervision cutter degree of wear, and wearing and tearing detect sword 10 adopts the pressure sensing formula in this scheme, and when wearing and tearing detect sword 10 and detect that the cutter wearing and tearing are serious and can't continue to excavate, wearing and tearing detect sword 10 passes through the signal of telecommunication and transmits for PLC equipment, and PLC equipment sends new signal after receiving this signal of telecommunication and makes the shield structure machine stop advancing.
Preferably, the auxiliary knife beam 2 is provided with a plurality of tearing knives 11, and the tearing knives 11 are mainly used for cutting soft soil and playing a role in assisting in cutting rock and soil bodies.
The periphery of the shield cutter head is embedded with a 500HB wear-resistant steel plate, so that the shield cutter head is prevented from being excessively worn, the service life of equipment is prolonged, and the maintenance cost is reduced.
Preferably, the excavation diameter of the shield tunneling machine cutter head is 6480mm, at the moment, the structure of the shield tunneling machine cutter head can meet the turning requirement of the geology of the hard rock stratum with the small radius of 300m, and when the hard rock stratum with the small radius of 300m turns, the phenomenon that the edge hob is frequently replaced or is directly blocked when the shield tunneling machine turns is avoided.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A cutter head structure of a shield tunneling machine comprises a shield tunneling machine cutter head and is characterized in that,
a main cutter beam (1) and an auxiliary cutter beam (2) which are alternately arranged at an angle are fixed on the shield cutter head;
the center of the main cutter beam (1) is provided with center hobs (3) side by side at equal intervals, the center of the main cutter beam (1) is provided with a front hob (4) far away from the center hob (3), two sides of the edge of the main cutter beam (1) are uniformly and symmetrically provided with front scrapers (7), and the outer side end is provided with an edge scraper (8);
peripheral hobs (5) are mounted at the outer side end of the auxiliary cutter beam (2), the number of the peripheral hobs (5) is 12, and 3 the peripheral hobs (5) are distributed at the outer side end of each auxiliary cutter beam (2) in an equiangular manner;
and a central scraper (6) is arranged at the position, close to the central hob (3), of the main hob beam (1) and the auxiliary hob beam (2).
2. The shield tunneling machine cutterhead structure according to claim 1, wherein the main knife beams (1) are distributed in a cross shape, the auxiliary knife beams (2) are distributed in a Y shape, and an included angle between two adjacent main knife beams (1) and the auxiliary knife beams (2) is 45 degrees.
3. The shield tunneling machine cutterhead structure according to claim 1, wherein a wear-resistant composite steel plate is fixedly connected to the surface of the auxiliary cutter beam (2).
4. The shield tunneling machine cutterhead structure according to claim 1, wherein foam nozzles (9) are mounted on both the main knife beam (1) and the auxiliary knife beam (2).
5. The shield tunneling machine cutterhead structure according to claim 1, wherein the main knife beam (1) and the auxiliary knife beam (2) are both provided with abrasion detection knives (10), and the abrasion detection knives (10) are used for monitoring the abrasion degree of the knives in real time.
6. The cutter head structure of the shield tunneling machine according to claim 1, wherein a plurality of tearing cutters (11) are distributed on the auxiliary cutter beam (2).
7. The cutter head structure of the shield tunneling machine according to claim 1, wherein a wear-resistant steel plate is embedded in the periphery of the shield tunneling cutter head.
8. The shield tunneling machine cutterhead structure of any one of claims 1-7, wherein the diameter of the shield cutterhead is 6480 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122757345.XU CN216110736U (en) | 2021-11-11 | 2021-11-11 | Cutter head structure of shield machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122757345.XU CN216110736U (en) | 2021-11-11 | 2021-11-11 | Cutter head structure of shield machine |
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| CN216110736U true CN216110736U (en) | 2022-03-22 |
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| CN202122757345.XU Active CN216110736U (en) | 2021-11-11 | 2021-11-11 | Cutter head structure of shield machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355012A (en) * | 2022-08-11 | 2022-11-18 | 中交二公局第三工程有限公司 | Cutter head structure for preventing cutter head of shield tunneling machine from caking mud cake and using method thereof |
| WO2024083129A1 (en) * | 2022-10-18 | 2024-04-25 | 山东建筑大学 | Composite rock-breaking cutterhead and tunnel boring machine comprising same |
-
2021
- 2021-11-11 CN CN202122757345.XU patent/CN216110736U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355012A (en) * | 2022-08-11 | 2022-11-18 | 中交二公局第三工程有限公司 | Cutter head structure for preventing cutter head of shield tunneling machine from caking mud cake and using method thereof |
| WO2024083129A1 (en) * | 2022-10-18 | 2024-04-25 | 山东建筑大学 | Composite rock-breaking cutterhead and tunnel boring machine comprising same |
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