CN212359770U

CN212359770U - Shield tunneling machine cutter head and shield tunneling machine

Info

Publication number: CN212359770U
Application number: CN202020884751.5U
Authority: CN
Inventors: 王昭军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-01-15
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a shield constructs entry driving machine blade disc and shield constructs entry driving machine, it includes outer blade disc and interior blade disc, outer blade disc is cyclic annularly, interior blade disc nestification is in the middle part fretwork department of outer blade disc, just outer blade disc with the axial interval of interior blade disc is 120~300 cm. The outer cutter head and the inner cutter head are respectively provided with an independent driving system, and the driving systems of the outer cutter head and the inner cutter head are respectively connected with a controller with a clockwise rotation control loop and a counterclockwise rotation control loop. The utility model discloses can be adapted to super large section tunnel excavation tunnelling, and the blade disc maintains the convenience.

Description

Shield tunneling machine cutter head and shield tunneling machine

Technical Field

The utility model relates to a shield constructs the entry driving machine, especially a shield constructs entry driving machine blade disc and shield and constructs entry driving machine.

Background

The shield tunneling machine is a special engineering machine for tunneling. The modern shield tunneling machine integrates light, mechanical, electrical, hydraulic, sensing and information technologies, has the functions of excavating and cutting soil, conveying soil slag, assembling tunnel lining, measuring, guiding and correcting deviation and the like, and relates to multiple subject technologies such as geology, construction, machinery, mechanics, hydraulic pressure, electricity, control, measurement and the like.

The shield tunneling machine is widely used for tunnel engineering of subways, railways, highways, municipal works, hydropower and the like, and is developed towards an ultra-large section, a special section and a combined section at present. However, the cutter head of the existing shield tunneling machine is generally an integral cutter head, and the tunnel section is excavated and tunneled synchronously, so that the existing shield tunneling machine is not suitable for the construction of the tunnel with the oversized section (the diameter is 16 meters and more).

Chinese patent CN109184717A discloses a shield tunneling machine cutter head, which includes an outer diameter-limiting cutter head, an inner diameter-limiting cutter head, and a central cutter head, which are nested in sequence, but it adopts a set of transmission system to control the outer diameter-limiting cutter head, the inner diameter-limiting cutter head, and the central cutter head to perform synchronous tunneling and crushing work, and the outer diameter-limiting cutter head is only used for tunneling and crushing at the periphery of the tunnel, the central cutter head is used for tunneling and crushing at the middle part of the tunnel, the inner diameter-limiting cutter head is used for re-crushing gravel and soil generated in the working process of the outer diameter-limiting cutter head and the central cutter head, therefore, the radial width of the outer diameter-limiting cutter head is very small (the difference between the radius of the inner ring and the outer ring is small), which is not beneficial to maintaining the same, and a set of transmission system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome not enough that current shield tunnelling machine tool bit can not adapt to super large section tunnel construction, provide a shield tunnelling machine tool bit and shield tunnelling machine that adapts to super large section tunnel construction.

For solving the technical problem, the utility model provides a shield structure entry driving machine blade disc, it includes outer blade disc and interior blade disc, outer blade disc is cyclic annularly, interior blade disc nestification is in the middle part fretwork department of outer blade disc, just outer blade disc with the axial interval of interior blade disc is 120~300 cm.

The utility model discloses the principle of "annular excavation, reserve core soil", through outer blade disc and the interior blade disc of the shield tunnelling machine cutter head design for inside and outside nested, and outer blade disc is cyclic annular, the axial interval of outer blade disc and interior blade disc is 1 ring-2 ring, thereby can realize dividing into a tunnel section two parts, the substep excavation, not only reduce the excavation area, and keep the palm shape of face to form a long 120~300cm (1 ring ~2 ring promptly, the length of 1 ring is agreed in the trade, be 120cm or 150cm generally) the core soil bench all the time, thereby the face stability has been increased, subside before the shield has been reduced.

Preferably, outer blade disc with interior blade disc has independent actuating system respectively, just outer blade disc with the actuating system of interior blade disc connects the controller that has clockwise rotation control circuit and anticlockwise rotation control circuit respectively, outer blade disc with interior blade disc still has independent slip casting system, loam storehouse and slag discharge system respectively to the convenient independent control to inside and outside blade disc guarantees interior, outer blade disc operating condition's each other and does not influence, and keeps the face to form the core soil platform all the time.

Preferably, when the clockwise rotation control circuit of the outer cutter head is started, the anticlockwise rotation control circuit of the inner cutter head acts. Or when the electric anticlockwise rotation control circuit of the outer cutter head is started, the clockwise rotation control circuit of the inner cutter head acts.

Preferably, the inside and outside circle radius difference of outer blade disc is not less than 3 meters, the diameter of interior blade disc is not less than 10 meters, not only makes things convenient for in the maintenance of external blade disc and cutter, makes moreover the utility model discloses ensure to be able to the construction of super large section.

Preferably, the working surface of the outer cutter head is sequentially provided with a first edge scraper, an excavating knife and a second edge scraper from outside to inside, the first edge scraper and the second edge scraper can be used for sizing the annular section to be excavated, and the excavating knife can be used for realizing the excavation and the crushing of the annular section.

Preferably, a fishtail cutter is arranged in the middle of the working surface of the inner cutter head, so that the center section can be conveniently excavated, and the excavation progress is accelerated.

Based on the same invention concept, the utility model also provides a shield tunneling machine, it includes forebody, midbody and shield tail that sets gradually from the front portion to the afterbody, the shield tunneling machine blade disc of installation in the forebody.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses divide into two steps of excavations with a tunnel section, excavate earlier and dig peripheral annular district, remain core soil bench, further increase for the blade disc size of shield entry driving machine provides probably to the sea is striden in the adaptation, strides the construction in super large section tunnels such as rivers.

2. Compared with the conventional full-face shield tunneling machine, under the construction state, the utility model discloses disturbance to the stratum will be littleer, reduces to some extent the requirement to the geological conditions, adapts to the bad area of geology better, shallowly buries and the complicated tunnel construction of taking of external environment.

3. The utility model discloses during operation, the antiport can be realized with interior cutter head to outer cutter head for excavation efficiency improves greatly, and is favorable to tunnelling in-process face to be stable.

4. The utility model discloses the blade disc form can be soil pressure balanced type, muddy water balanced type, or the combination form of the two.

Drawings

Fig. 1 is the structural schematic diagram of the shield tunneling machine of the present invention.

Fig. 2 is the utility model discloses the structure schematic diagram of shield tunnelling machine blade disc and tunnel country rock.

In the figure: 1. a precursor; 2. a middle body; 3. a shield tail; 4. a cutter head; 5. surrounding rocks; 41. an outer cutter head; 42. an inner cutter head; 411. a first edge scraper; 412. digging a cutter; 413. a second edge scraper; 414. an outer cutter grouting system; 415. an outer cutter disk soil bin; 416. an outer cutter head slag discharge system; 417. an outer cutter drive system; 421. a fish tail knife; 422. an inner cutter grouting system; 423. an inner cutter disk soil bin; 424. an inner cutter head slag discharge system; 425. an inner cutter drive system.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

Example 1:

as shown in fig. 1-2, an embodiment of the shield tunneling machine of the present invention includes a front body 1, a middle body 2 and a shield tail 3, which are sequentially arranged from the front portion to the tail portion, wherein a cutter head 4 is installed at the front end of the front body 1.

The cutter head 4 includes an outer cutter head 41 and an inner cutter head 42. The outer cutter disc 41 is annular, the inner cutter disc 42 is nested in the hollow-out position in the middle of the outer cutter disc 41, and the axial distance between the outer cutter disc 41 and the inner cutter disc 42 is 120-300 cm (1 ring-2 ring).

The working surface of the outer cutter disc 41 is provided with a first edge scraper 411, a digging cutter 412 and a second edge scraper 413 from outside to inside in sequence. And a fishtail cutter 421 is arranged in the middle of the working surface of the inner cutter disc 42.

An outer cutter disc grouting system 414, an outer cutter disc soil bin 415 and an outer cutter disc deslagging system 416 are arranged behind the outer cutter disc 41, an outer cutter disc driving system 417 is installed on a sealing partition plate of the outer cutter disc soil bin 415, and the outer cutter disc driving system 417 is connected with an outer cutter disc controller (not shown) with a clockwise rotation control circuit and a counterclockwise rotation control circuit.

An inner cutter grouting system 422, an inner cutter soil bin 423 and an inner cutter slag discharging system 424 are arranged behind the inner cutter 42, an inner cutter driving system 425 is mounted on a sealing partition plate of the inner cutter soil bin 423, and the inner cutter driving system 425 is connected with an inner cutter controller (not shown) with a clockwise rotation control circuit and a counterclockwise rotation control circuit.

The outer blade controller and the inner blade controller are preferably the drive controller S120 of siemens.

In order to facilitate the maintenance of the outer cutter head 41 and the cutter and ensure the construction suitable for the ultra-large section, the difference between the radiuses of the inner ring and the outer ring of the outer cutter head 41 is not less than 3 m, and the diameter of the inner cutter head 42 is not less than 10 m.

The utility model discloses during operation, outer cutter head 41 is tunneled in advance, along with the installation along with the tunnelling strut section of jurisdiction, backfill slip casting, and outer cutter head 41 keeps 1 ring ~2 interannular distance with interior cutter head 42, keeps the core soil bench that the face formed a long 1 ring ~2 ring all the time promptly. Because outer blade disc 41 and interior blade disc 42 adopt independent actuating system respectively, therefore can realize outer blade disc 41 and the reverse gyration of interior blade disc 42 (for example outer blade disc electricity connection clockwise rotation control circuit when realizing clockwise rotation, interior blade disc electricity connection anticlockwise rotation control circuit to realize anticlockwise rotation.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. The utility model provides a shield structure entry driving machine blade disc, its characterized in that includes outer blade disc and interior blade disc, outer blade disc is cyclic annular, interior blade disc nestification is in the middle part fretwork department of outer blade disc, just outer blade disc with the axial interval of interior blade disc is 120 cm-300 cm.

2. The shield tunneling machine cutterhead of claim 1, wherein the outer cutterhead and the inner cutterhead each have independent drive systems, and the drive systems of the outer cutterhead and the inner cutterhead are connected to controllers having clockwise rotation control loops and counterclockwise rotation control loops, respectively.

3. The shield tunneling machine cutterhead of claim 2, wherein upon activation of the clockwise rotation control circuit of the outer cutterhead, the counterclockwise rotation control circuit of the inner cutterhead is activated.

4. The shield tunneling machine cutterhead of claim 2, wherein upon activation of the electrical counterclockwise rotation control circuit of the outer cutterhead, the clockwise rotation control circuit of the inner cutterhead is activated.

5. The shield tunneling machine cutterhead of claim 1, wherein the difference between the radii of the inner and outer rings of the outer cutterhead is not less than 3 meters, and the diameter of the inner cutterhead is not less than 10 meters.

6. The shield tunneling machine cutterhead according to claim 1, wherein the outer cutterhead and the inner cutterhead are provided with independent grouting system, mud bin and slag discharge system respectively.

7. The shield tunneling machine cutterhead of claim 1, wherein the working face of the outer cutterhead is provided with a first edge scraper, a digging cutter and a second edge scraper in sequence from outside to inside.

8. The cutterhead of a shield tunneling machine according to claim 1, wherein a fishtail cutter is mounted in the middle of the working face of the inner cutterhead.

9. A shield tunneling machine comprising a front body, a middle body and a shield tail which are arranged from the front part to the tail part in sequence, wherein the front body is internally provided with a cutter head according to any one of claims 1 to 8.