CN-122014271-A - Method for reducing unbalanced side force of edge cutter, disc cutter, mounting method and TBM

CN122014271ACN 122014271 ACN122014271 ACN 122014271ACN-122014271-A

Abstract

The application relates to the technical field of working cutters of full-face tunnel boring machines, in particular to a method for reducing unbalanced side force of an edge cutter, a disc cutter, an installation method and a TBM. The ith disc hob edge cutter is adjusted to lead the included angle between the inner side edge angle surface of the disc hob edge cutter and the rock breaking edge surface of the traditional disc hob to be The included angle between the outer side edge surface and the rock breaking edge surface of the traditional disk hob is Among them, Is a half-edge angle of the edge cutter of the disc cutter, In the equation, Is the radius of the edge cutter of the disc cutter, The installation angle of the edge cutter of the disc cutter is h, and the tunneling distance of one circle of cutter head rotation is h. The application can reduce sideslip and rock scraping of the rock breaking edge of the disc cutter edge cutter of the working full-face tunnel boring machine, greatly reduce the side force of the rock breaking disc cutter edge cutter, reduce the abrasion of the disc cutter, prolong the service life of the disc cutter and avoid abnormal abrasion failure such as tipping, chord grinding and the like of the disc cutter.

Inventors

ZHANG ZHAOHUANG
CAO JINGHUA
HAN JIALIN
ZHUO XINGJIAN
XU CHENGFA
JI WEI
SU CUIXIA
LIU SHUBING
JIA LIANHUI
ZHOU JUN

Assignees

华北电力大学

Dates

Publication Date: 20260512
Application Date: 20260325

Claims (8)

1. The method for reducing unbalanced side force of edge cutter is characterized by that the ith edge cutter of disk-shaped hob is regulated, and the included angle between the inner side edge angle surface of the ith edge cutter of disk-shaped hob and rock-breaking edge surface of traditional mounted disk-shaped hob is The included angle between the outer side edge surface and the rock breaking edge surface of the traditional disk hob is , wherein, For the half-edge angle of the ith edge cutter of the disc-shaped hob, In which, in the process, For the radius of the ith disc hob edge, And h is the installation angle of the side cutter of the ith disc-shaped hob, and h is the tunneling distance of the full-section tunnel boring machine with one circle of cutterhead rotation.
2. A disc cutter based on the method of claim 1, wherein the disc cutter is a disc cutter edge cutter, and wherein the i-th disc cutter edge cutter inner edge angle The outside edge angle of the edge cutter of the disc cutter 。
3. Disc cutter according to claim 2, characterized in that the disc cutter is divided into two parts by a middle section, wherein the thickness of the part near the axis of the cutter disc is smaller than the thickness of the part far from the axis of the cutter disc.
4. A TBM comprising a plurality of disc cutters as claimed in claim 2 or 3.
5. A method for installing a disc cutter based on the method of claim 1, wherein the disc cutter is a disc cutter edge cutter, and the cutter shaft of the ith disc cutter edge cutter is inclined to enable the ith disc cutter edge cutter to incline towards the outer edge of a face and towards the cutter disc axis Thereby the included angle between the inner side edge angle surface of the side edge cutter of the ith disc cutter and the rock breaking edge surface of the traditional disc cutter is The included angle between the outer side edge angle surface of the edge cutter of the ith disc cutter and the rock breaking edge surface of the traditional disc cutter is 。
6. The disc cutter mounting method according to claim 5, wherein the angle adjustment between the cutter shaft of the ith disc cutter side cutter and the rock breaking blade surface of the conventional mounted disc cutter is achieved by adjusting the mounting angle of the bearing seat of the ith disc cutter side cutter.
7. The disc cutter mounting method according to claim 5, wherein the angle adjustment between the cutter shaft of the ith disc cutter side cutter and the rock breaking edge surface of the conventionally mounted disc cutter is achieved by adjusting the bearing angle of the ith disc cutter side cutter.
8. A TBM comprising a plurality of disc cutter edge knives, characterized in that the mounting manner of each disc cutter edge knife is adjusted based on the disc cutter mounting method according to any one of claims 5 to 7.

Description

Method for reducing unbalanced side force of edge cutter, disc cutter, mounting method and TBM Technical Field The application relates to the technical field of working cutters of full-face tunnel boring machines, in particular to a method for reducing unbalanced side force of an edge cutter, a disc cutter, an installation method and a TBM. Background The full face tunnel boring machine is a generic name of a full face rock boring machine (TBM) and a Shield (Shield), and the disc cutter is an operation cutter on the full face tunnel boring machine, and belongs to a consumable part. Because the design method is not in line with the operation of the design method, the consumption of the design method in engineering application is accelerated, wherein the total of the tipping, the chord grinding and the bearing damage accounts for about 30% of the damage amount. It was found that the main cause of this situation is the presence of "sliding friction" and "lateral scraping" of the working disc cutter rock breaking blade, and the resultant lateral imbalance forces are the main cause of the damage. Disclosure of Invention The application provides a method for reducing unbalanced side force of a side cutter, a disc cutter, an installation method and a TBM, which can reduce sideslip and rock scraping of a rock breaking blade of the side cutter of the disc cutter of an operation full-face tunnel boring machine, and greatly reduce the side force of the side cutter of the rock breaking disc cutter. In a first aspect, the present application provides a method of reducing side-cutter imbalance side forces comprising adjusting an i-th disc cutter side cutter to provide an included angle between an inside edge surface of the i-th disc cutter side cutter and a rock breaking edge surface of a conventionally mounted disc cutter ofThe included angle between the outer side edge surface and the rock breaking edge surface of the traditional disk hob is, wherein, For the half-edge angle of the ith edge cutter of the disc-shaped hob,In which, in the process,For the radius of the ith disc hob edge,And h is the installation angle of the side cutter of the ith disc-shaped hob, and h is the tunneling distance of the full-section tunnel boring machine with one circle of cutterhead rotation. In a second aspect, the application provides a disc hob based on the method, which is a disc hob edge, wherein the i-th disc hob edge has an inner side edge angleThe outside edge angle of the edge cutter of the disc cutter。 In a preferred embodiment, the disc cutter is divided into two parts by a central section, wherein the thickness of the part near the axis of the cutter head is smaller than the thickness of the part far from the axis of the cutter head. In a third aspect, the application provides a TBM comprising a plurality of disc cutter units. The application provides a disc cutter mounting method based on the method, which comprises the steps of tilting the cutter shaft of the ith disc cutter edge cutter towards the outer edge of the face and towards the cutter disc axis, and adopting the disc cutter with the same structureThereby the included angle between the inner side edge angle surface of the side edge cutter of the ith disc cutter and the rock breaking edge surface of the traditional disc cutter isThe included angle between the outer side edge angle surface of the edge cutter of the ith disc cutter and the rock breaking edge surface of the traditional disc cutter is。 In a preferred embodiment, the angle adjustment between the cutter shaft of the ith disc cutter and the rock breaking edge surface of the traditional disc cutter is realized by adjusting the installation angle of the bearing seat of the ith disc cutter. In a preferred embodiment, the angle adjustment between the cutter shaft of the ith disc cutter edge and the rock breaking edge surface of the traditional mounted disc cutter is achieved by adjusting the bearing angle of the ith disc cutter edge. In a fifth aspect, the present application further provides a TBM, including a plurality of disc cutter edge cutters, where the mounting manner of each disc cutter edge cutter is adjusted based on any one of the disc cutter mounting methods. The application has the following beneficial effects: According to the application, by changing the shape of the edge cutter of the disc cutter or adjusting the installation mode of the edge cutter of the disc cutter, the included angles between the inner edge angle surface and the outer edge angle surface of the edge cutter of the disc cutter and the rock breaking edge surface of the disc cutter which is installed in the prior art can be adjusted, so that the sideslip and rock scraping of the rock breaking edge of the disc cutter of the working full-face tunnel boring machine can be reduced, and the lateral force of the edge cutter of the rock breaking disc cutter can be greatly reduced. Theoretical analysis and experiments prove that the appli