A Quantitative Prediction Method for Life State of Main Bearing of Tunnel Boring Machine

A technology of tunnel boring machine and main bearing, which is applied in the direction of mechanical bearing testing, etc. It can solve the problems of complex and changeable surrounding rock types, deviations, etc., and achieve the effect of avoiding limitations and improving accuracy

Active Publication Date: 2020-03-31
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology

The traditional main bearing life estimation method mostly uses qualitative judgment. Due to the complex and changeable surrounding rock types in the construction process, there is a large deviation in the qualitative judgment method

Method used

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  • A Quantitative Prediction Method for Life State of Main Bearing of Tunnel Boring Machine
  • A Quantitative Prediction Method for Life State of Main Bearing of Tunnel Boring Machine
  • A Quantitative Prediction Method for Life State of Main Bearing of Tunnel Boring Machine

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Embodiment Construction

[0022] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] A method for quantitatively estimating the life state of a main bearing of a tunnel boring machine, the steps are as follows:

[0024] S1. Obtain the basic rated life L of the main bearing according to the performance parameters of the main bearing of the tunnel boring machine 10h and rated dynamic load C. Main bearing performance parameters are jointly determined by main bearing parameter designers and manufacturers.

[0025] S2, obtain the total thrust F and the cutter head torque T in real time according to the PLC n , ...

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Abstract

The invention provides a quantitative estimation method for the life state of a main bearing of a tunnel boring machine, and relates to tunnel boring equipment and similar equipment construction technology. The method includes: obtaining the basic rated life L10h and the rated dynamic load C of the bearing according to bearing performance parameters; acquiring the total propulsion F and the cuttertorque Tn in real time according to a PLC, performing reading once per second, recording the stress condition of a main bearing after tunnelling of the device starts, and counting the total working time H of tunneling; and obtaining the equivalent total consumption life L1 according to an established life estimation model and statistics of historical data, and then estimating the remaining life Lof the main bearing. The method of the invention overcomes the defects of the prior art that the life of the main bearing of the shield machine cannot be quantitatively evaluated; and the method forestablishing an analysis model based on the field construction data avoids the limitation that a theoretical analysis model does not adapt to the actual tunnelling condition. The method can be extended to other large main bearing applications.

Description

technical field [0001] The invention belongs to the technical field of tunnel excavation equipment construction, and in particular relates to a method for quantitatively estimating the life state of a main bearing of a tunnel boring machine, thereby providing guidance on whether the main bearing needs to be replaced and maintained, and realizing the quantitative prediction of the life state of the main bearing. Background technique [0002] Tunnel boring machine (hereinafter referred to as hard rock TBM) is a large-scale high-tech construction equipment specially used in excavating tunnels and underground passages. The main bearing is the most critical structural part of the tunnel boring machine, and its service life directly affects the maintenance and use of the tunnel boring machine, and even affects the key to the success of a tunnel project. [0003] With the increasing number of old tunnel boring machines in domestic and foreign markets, and the increasing demand for ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 李鹏宇李建斌荆留杰杨晨陈帅
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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