A method for optimizing vibration damping structure design of full-face hard rock roadheader

Abstract

A method for optimizing vibration damping structure of full-face hard rock roadheader includes such steps as selecting sandwich material of high polymer sandwich damping damping steel plate, mixing that sandwich material with the high polymer sandwich damping steel plate to obtain the sandwich material of high polymer sandwich damping damping steel plate. Determining the structure and size of polymer sandwich damping steel plate; The dynamic model of the cutter head of the full-face hard rock roadheader is established. Determining the equivalent stiffness and damping of each subsystem; External excitation of computational model; 6) calculating that energy consumption of rock breaking, the vibration energy dissipation and the rock break volume of the whole machine, calculating and evaluating the dynamic specific energy of the tunneling performance of the hard rock roadheader, and characterizing the vibration level of the hard rock roadheader by the acceleration mean value in unit time.The present invention takes into account the drawbacks of existing methods for modifying component connection modes and replacing component materials, A structural vibration reduction method is proposed, which can reduce the vibration intensity of the main engine of the full-face hard rock boring machine under the requirements of safety and strength, thereby reducing the damage degree of the mainengine parts of the full-face hard rock boring machine, improving the tunnel construction efficiency and greatly accelerating the construction progress of the boring project.

Description

technical field [0001] The invention relates to a vibration reduction optimization structure design method of a full-section hard rock roadheader, belonging to the technical field of structural design optimization of a full-section hard rock roadheader. Background technique [0002] With the rapid development of today's social and economic level, the problem of traffic congestion is becoming more and more serious. The development of underground spaces such as underground highways and underground tunnels has become a trend. Full-face hard rock roadheaders have become the mainstream of rapid tunnel excavation in the world One of the most advanced tunnel construction methods out there. The full-face hard rock roadheader is mainly composed of cutter head system, drive system, support system, propulsion system, lubrication system, hydraulic system, electrical control system, positioning and guiding system, lining support system and other systems. Among them, the cutter head syst...

AI Technical Summary

Problems solved by technology

In the past ten years, the research on polymer interlayer damping and vibration-damping steel plates has developed rapidly, and engineering applications have become increasingly widespread. However, so far, there has been no public literature on the application of polymer interlayer damping and vibration-damping steel plates to full-face hard rock roadheaders. Therefore, in order to reduce the impact of vibration on the main engine of the full-face hard rock roadheader, improve tunnel construction efficiency, and save economic costs, it is proposed that under the premise of constant strength, between the flange and the adapter ring, the adapter ring and the rotary The polymer interlayer damping and vibration-damping steel plate is installed between the supports to improve the vibration-damping function of the whole machine

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