The Research Of The Vibration And Isolation On AM-50 Roadheader's Electric Control Box

In this paper, theoretical analysis of AM-50 Roadheader vibration of mechanical and electrical control boxes, based on comprehensive testing of the boring machine cut coal false wall of the Vibration of electronic control box. Using HP3562A Dynamic Signal Analyzer to test the time-domain signals, and transmission characteristics of frequency domain analysis, to identify the electronic control box is too large vibration factor. Electronic control box for the design of a new vibration of wire rope isolator, Experimental Study of the performance of its isolation, the isolation of the electronic control box program. Isolator used in the AM-50 Roadheader Electrical isolation control box and isolator is made by contrast, reached the following conclusions:(1) The electronic control box isolator arrangement, as well as the symmetry of bad side effects of isolator, electric control box is to the vibration, the acceleration response to the close;(2) boring machine cutting hardness in f2, f4 coal false wall, the electric control box on the peak acceleration value of 1.76g, the support plate on the peak acceleration value of 1.8, both the maximum horizontal boring machine in the cutting working conditions;(3) electronic control box suffered incentives have two parts: First, self-rotating boring machine inspired by some of the imbalance for the 85HZ fundamental frequency of the bands around, the high-frequency excitation; Second, the work load of boring low-frequency random vibration caused by the main concentrated in about 7.5HZ;(4) At present, the electronic control box of the vibration isolator ineffective, 0-50HZ isolation in the transmission rate of greater than 1, the maximum value of 2.5;(5) the new design of an ordinary wire rope isolator is a non-linear stiffness and nonlinear damping isolator with multi-directional deformation capability, and rubber vibration isolator as compared to the efficiency of alternate red and vibration isolation efficiency were higher than the latter, is an ideal isolator electronic control box;(6) use computer simulation AM-50 boring machine using steel wire rope isolator, the forecast for the cabinet in the incentive at the time of 1.8g peak acceleration value of 0.3g, in theory, meet the electric control box isolation requirements;(7) wire rope isolator isolator rubber substitute for the original AM-50 heading for the mechanical and electrical control box of industrial test results show that: in the hardness of coal and rock cutting for the f2.5 maximum cutting power, the biggest box on the points acceleration value of less than 0.243g, isolation better than the rubber used in the past isolator. Reached the control of electronic control box vibration requirements.The results show that the wire rope isolator isolation has a good effect, and can replace the original rubber isolator AM-50 heading for the Electrical and Mechanical vibration isolation control box, a good mechanical and electrical control box to meet the driving requirements of vibration control.