240000 Nm shield machine main drive speed reducer

Abstract

The invention relates to a 240000 Nm shield machine main drive speed reducer, which relates to the technical field of engineering machinery, and is mainly applied in shield machines. A motor is adopted to input, three-level planet speed reduction is adopted, an output steering direction and an input steering direction are the same, and a sun gear is adopted to output. The three-level planet speed reducer comprises a first-level transmission device, a second-level transmission device and a third-level transmission device which are in sequential transmission connection. The 240000 Nm shield machine main drive speed reducer is simple in structure, reasonable in design, stable in transmission, and multiplied in bearing torque, creates a localization pioneer of the Chinese tunnel shield machine main drive speed reducer, breaks the blockage and the monopoly of developed countries on Chinese TBM (Tunnel Boring Machine) and shield machine main drive speed reducer technology, fills the blank of domestic shield machine main drive speed reducer manufacturing, and lays a solid foundation in creating a national brand.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a main drive reducer for a 240,000-Nm shield machine. Background technique [0002] The 21st century is an era in which cities expand to air and underground three-dimensional spaces. Today, countries all over the world attach great importance to the construction of underground projects such as urban underground railways and river tunnels. my country's cities are densely populated, and large-scale construction of subways in central cities is the fundamental way to solve traffic congestion in major cities. [0003] The main drive reducer is the core key transmission part of TBM and shield machine, which are large-scale non-excavation earthwork equipment in the construction of urban subway tunnels, highways and railways. Before that, only a few developed countries in Japan and Europe and the United States had the production technology of this type of reducer. my coun...

AI Technical Summary

Problems solved by technology

Although the use of a reducer is disclosed in this publication, it is not proposed to use a high-power reducer for the shield machine

[0005] Chinese patent application number 200810231114.1 discloses a high-power three-stage planetary reducer for earth pressure balance shield machines. The reducer is composed of an input planetary gear pair, an intermediate planetary gear pair, and an output planetary gear pair. The structure can use a high-power reducer to a certain extent, but the bearing capacity of 240,000 Nm does not meet the requirements and cannot meet the harsh construction conditions

[0006] At the same time, after checking the relevant foreign patent texts, there is no relevant record about the main drive reducer of the 240,000 Nm shield machine

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