CN210440039U

CN210440039U - Modular variable-diameter expanded-excavation TBM cutter head

Info

Publication number: CN210440039U
Application number: CN201920939304.2U
Authority: CN
Inventors: 梅元元; 刘光鑫; 白江涛; 章龙管; 李恒; 高旭东; 郑军; 周鸿雏; 邓洋; 陈洪财; 陈文菊
Original assignee: China Railway Engineering Service Co Ltd
Current assignee: China Railway Engineering Service Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-05-01
Anticipated expiration: 2029-06-21

Abstract

The utility model relates to the field of tunnel construction machinery, in particular to a modular variable-diameter expanded-excavation TBM cutter head, which comprises a quadrilateral central cutter head module provided with a central revolving body and a fan-shaped peripheral cutter head module arranged around the four sides of the central cutter head module, wherein four peripheral cutter head modules are respectively arranged on four sides of the central cutter head module, thereby forming a circular cutter head, the central cutter head module and the peripheral cutter head modules are connected through two pushing oil cylinders, the base of the pushing oil cylinder is fixedly arranged on the central cutter head module, the piston rod head of the pushing oil cylinder is fixedly arranged on the peripheral cutter head module, and the pushing oil cylinder is arranged on one side of the full-circle cutter head close to a soil bin, thereby the peripheral cutter head module can be pushed by the pushing oil cylinder to realize variable-diameter excavation, so that an excavation line is properly enlarged to reserve deformation, the problem of expanding excavation of high ground stress soft rock large deformation in tunnel construction is effectively solved.

Description

Modular variable-diameter expanded-excavation TBM cutter head

Technical Field

The utility model relates to a tunnel construction machinery especially relates to a but TBM blade disc that excavation was expanded to modularization reducing.

Background

The tunnel construction process often encounters the problems of high ground stress, large deformation of surrounding rocks, deep tunnel TBM (tunnel boring machine) clamping mechanism and the like. In the design and construction of the high ground stress soft rock tunnel, technical measures such as reserved deformation, supporting means, excavation method and the like are generally adopted, so that the occurrence of large deformation can be effectively controlled, and the engineering safety is ensured. The reserved deformation of the tunnel is the reserved deformation of the tunnel, which is called as the reserved deformation of the tunnel, in order to fully exert the self-supporting function of the surrounding rock and allow the primary support and the surrounding rock to have certain deformation, and the designed excavation line is properly expanded. At present, no corresponding TBM engineering machine exists for the technical measure of reserving the deformation amount in tunnel construction.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a but modularization reducing expands TBM blade disc of digging for can be when meetting high ground stress soft rock tunnel, can pass through the utility model provides a pair of but TBM blade disc that modularization reducing expands digging realizes the hole enlargement excavation, thereby makes the excavation line do and suitably enlarges and reserve the deflection.

The technical scheme of the utility model as follows:

the utility model provides a but TBM blade disc that modularization reducing expands digs is including the central blade disc module of installing the center solid of revolution to and encircle the peripheral blade disc module that central blade disc module arranged, peripheral blade disc module encircles central blade disc module and arranges into a circular blade disc, central blade disc module is connected with peripheral blade disc module through the top pushes away hydro-cylinder to accessible top pushes away peripheral blade disc module and makes the diameter grow of whole circular blade disc.

Preferably, the excavation face of the central cutter head module is of a quadrilateral structure, the number of the corresponding peripheral cutter head modules is four, the excavation face of the peripheral cutter head module is of a fan-shaped structure and is respectively located on four edges of the central cutter head module, and a complete-circle cutter head is formed by combining the excavation faces.

The central cutter head module and the peripheral cutter head module are connected through two pushing oil cylinders, bases of the pushing oil cylinders are fixedly installed on the central cutter head module, piston rod heads of the pushing oil cylinders are fixedly installed on the peripheral cutter head module, and the pushing oil cylinders are located on one surfaces, close to the soil bin, of the round cutter heads.

Furthermore, the hobs on the full-circle cutterhead are arranged in a one-track multi-cutter mode, namely a plurality of hobs are arranged on the same operation track, so that the hobs can operate according to the track without diameter change after diameter change.

The utility model has the advantages that: the utility model discloses a blade disc modularization, and set up central blade disc module, peripheral blade disc module is installed around central blade disc module, thereby assemble into a full circle's blade disc, and be connected through the top push hydro-cylinder between central blade disc module and the peripheral blade disc module, thereby accessible top push hydro-cylinder promotes peripheral blade disc module and realizes the reducing excavation, thereby it suitably enlarges the reservation deflection to make the excavation line, effectual solution in tunnel construction, the problem is dug in the expansion of high ground stress soft rock large deformation.

Drawings

Fig. 1 is a schematic view of a cutter head before diameter changing of the utility model;

fig. 2 is a schematic view of the cutter head after diameter change;

FIG. 3 is a schematic diagram comparing the moving tracks of the hobs before and after the diameter change;

description of reference numerals: 1. a central cutter head module; 2. a peripheral cutter head module; 3. a pushing oil cylinder; 4. and (4) hobbing cutters.

Detailed Description

The invention is further described with reference to the accompanying drawings.

See figure 1 to figure 3 and do the detailed description to utility model's best embodiment, but the TBM blade disc that a modularization variable diameter expanded excavated is including installing quadrangle structure center blade disc module 1 of the center solid of revolution to and surround the peripheral blade disc module 2 that the fan-shaped structure that central blade disc module 1 four sides were arranged, peripheral blade disc module 2 is totally four edges that are located central blade disc module 1 respectively to arrange into a circular blade disc, all push away hydro-cylinder 3 through two between central blade disc module 1 and the peripheral blade disc module 2 and be connected, push away the base fixed mounting of hydro-cylinder 3 on central blade disc module 1, push away hydro-cylinder 3's piston rod head fixed mounting on peripheral blade disc module 2, and push away hydro-cylinder 3 and be located the one side that the whole circle blade disc is close to the soil storehouse. The hobs 4 on the full-circle cutterhead are arranged in a one-rail multi-cutter mode, namely a plurality of hobs 4 are arranged on the same operation track, so that the hobs 4 can operate according to the track without diameter change after diameter change.

In the shield tunneling process, when the bottom end of high ground stress soft rock deformation is met and the tunnel needs to be expanded and excavated, the pushing oil cylinder 3 continuously works at the moment and pushes out the peripheral cutter head modules 2 respectively until the maximum excavation diameter reaches a design value. Therefore, the problem of expanding excavation of high ground stress soft rock large deformation is solved. And the hobs 4 on the whole circular cutterhead are arranged in a one-track multi-cutter mode, namely a plurality of hobs 4 are arranged on the same running track, so that after diameter changing, the hobs 4 can run according to the track without diameter changing.

It is right to see figure 3 the utility model discloses a track multitool carries out detailed explanation, as the blade disc of figure 3 non-reducing is shown, be drawn with a circular dotted line on the blade disc, this needs represent hobbing cutter 4's operation route, look over that this route can be clear and install two hobbing cutters 4 on this route, see the blade disc after the reducing of figure 3, be drawn with two circular dotted lines on this blade disc and represent hobbing cutter 4's operation route respectively, be located two hobbing cutters 4 on same route on the blade disc of non-reducing, be located two routes after the reducing respectively, and a route after the reducing is the same with hobbing cutter 4 route when not reducing, so the utility model discloses a mode of track multitool for blade disc after the reducing also has hobbing cutter 4 to be located the operation route before the reducing, guarantee the broken rock ability of cutter.

It is not right to above set up two hobbing cutters 4 on same route the utility model discloses a restriction is only right through two hobbing cutters 4 the utility model discloses a detailed explanation is done to a rail multitool, consequently utility model's a rail multitool can arrange 3 or 4 each or more hobbing cutters 4 on same route on the basis of satisfying hobbing cutter 4's reasonable layout.

Claims

1. The utility model provides a but TBM blade disc that modularization reducing expands digs, its characterized in that, is including central blade disc module (1) of installing the center solid of revolution to and encircle peripheral blade disc module (2) that central blade disc module (1) arranged, peripheral blade disc module (2) encircle central blade disc module (1) and arrange into a circular blade disc, central blade disc module (1) is connected with peripheral blade disc module (2) through pushing away hydro-cylinder (3).

2. The modular variable-diameter expanding excavation TBM cutter head as claimed in claim 1, wherein the excavation face of the central cutter head module (1) is of a quadrilateral structure, the corresponding peripheral cutter head modules (2) are four in number, the excavation face of the peripheral cutter head modules (2) is of a fan-shaped structure, and the excavation faces are respectively located on four edges of the central cutter head module (1) to form a complete circular cutter head.

3. The modular variable-diameter expanding excavation TBM cutter head as claimed in claim 2, wherein the central cutter head module (1) and the peripheral cutter head modules (2) are connected through two pushing cylinders (3), bases of the pushing cylinders (3) are fixedly mounted on the central cutter head module (1), piston rod heads of the pushing cylinders (3) are fixedly mounted on the peripheral cutter head modules (2), and the pushing cylinders (3) are located on one surface of the round cutter head close to the soil bin.

4. The modular variable-diameter expanding excavation TBM cutter head as claimed in claim 3, wherein the hobs (4) on the full-circle cutter head are arranged in a one-track multi-cutter mode, namely a plurality of hobs (4) are arranged on the same operation track, so that after diameter reduction, the hobs (4) can still operate according to the track without diameter reduction.