Vibration and strain monitoring method for key parts of full-face rock boring machine
A strain monitoring, full-section technology, used in earth-moving drilling, mining equipment, tunnels, etc., to solve problems such as lack of a complete solution, inability to install sensors, and theoretical dangers
Active Publication Date: 2018-12-18
DALIAN UNIV OF TECH
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Problems solved by technology
[0004] Due to the very harsh working conditions of TBM, it is extremely difficult to monitor the state of TBM
At present, there is no complete scheme for monitoring the vibration and strain of the TBM host system at home and abroad.
And the theoretical dangerous points of some key parts cannot be directly measured by installing sensors due to the limitation of actual working conditions
Although there are some scholars or enterprises that collect a small section of vibration data during the excavation process, due to the small number of samples collected, there are certain limitations.
Method used
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Embodiment Construction
[0051] The specific embodiment of the present invention will be described in detail below in conjunction with accompanying drawings and technical solutions, figure 1 It is a schematic diagram of the TBM main engine system of a certain project, including main components such as cutter head, support shield, drive motor, main beam and support shoes. The TBM cutter head cuts rocks continuously during the working process, and the cutter head is affected by the impact of rocks. The load is relatively large and the load is transmitted to the rear parts, resulting in the vibration of the support shield, drive motor, main beam and support shoes.
[0052] On the cutter head, the vibration sensor arranged in the water hole of the cutter head is powered by a battery. The service life of the battery is about 1 week at an appropriate sampling frequency, and the collected vibration signal passes through the antenna; it is arranged in the water hole of the cutter head The strain gauge is used...
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The invention provides a method for monitoring vibration and strain of key parts of a full-face rock tunnel boring machine and belongs to the technical field of real-time monitoring of underground construction for full-face rock tunnel boring machines. The invention is intended to provide a monitoring device and an all-weather monitoring warning system thereof. A vibration and strain sensor and a wireless data transmission system therein are used to acquire monitoring data in order to provide long-term real-time monitoring for vibration and strain states of key parts of a TBM (tunnel boring machine) main unit system during operating, operators can be reminded of performing maintaining in time, fatigue damage of key weak parts of the TBM main unit system is prevented, and operational safety and reliable of the TBM are ensured. The invention also provides a method for evaluating strain state of parts unable to be measured, namely, an equivalent mapping method. Therefore, a complete system for monitoring vibration and strain of key parts of the TBM main unit system in the whole process is constructed.
Description
technical field [0001] The invention relates to a vibration and strain real-time monitoring and strain equivalent mapping measurement method of a host system of a full-face rock boring machine, and belongs to the technical field of real-time monitoring of underground construction of a full-face rock boring machine. Background technique [0002] With the development of our country's economy, in recent years, the full-face rock boring machine (TBM) has been widely used in the construction of water conservancy projects, railway transportation, subway projects, oil and gas pipelines and national defense tunnels in our country. When the full-face rock boring machine is in operation, due to the complex working conditions and harsh service environment, it has the characteristics of heavy load and impact, which eventually causes the key weak parts of the TBM host system to wear or even break. [0003] The TBM host system mainly includes key parts such as cutter head, support shield,...
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IPC IPC(8): E21D9/00
CPCE21D9/003
Inventor 霍军周朱冬孟智超鲍有能赵奎山
Owner DALIAN UNIV OF TECH