ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Multi-factor and multi-level machine-soil interaction experiment is the basis of structural design and determination of optimal working parameters for rotary tiller components. Existing indoor soil-bins have the disadvantages of backward control and measurement methods and inconveniences in replacement of blades rollers. At the same time, the problems of uncontrollable soil environmental factors exist in field experiments. In view of the above problems, a special intelligent test bench for performance test of rotary tiller components was presented, and its design principle, control mode and measurement method were expounded. The test bench consisted of a test trolley and a track system. The test bench was composed of the test trolley and the track system. The test trolley integrated the functions of rotary tillage, soil leveling, soil compaction, and tillage depth adjustment. With relatively independent functions, the test bench can realize rapid replacement of rotary blade rollers. The track system was assembled by multiple sections, for which the total length can be expanded, the height can be adjusted and the position can be moved. Electric drive mode was adopted in driving, rotary tillage, and tillage depth adjustment of the test trolley. Taking PLC as control core, radio frequency LoRa communication control technology was used to achieve wireless control input, which guaranteed the convenience in operation and maintenance of the test bench. The debugging results showed that the forward speed, rotary tillage speed and tillage depth can be adjusted continuously, which were in ranges of 0~1.17m/s, 0~340r/min and 0~30cm, respectively. Multi-measuring functions were completed in the test bench, such as forward speed, working torque, rotary speed, and power consumption. The test channels were designed to be extensible. What’s more, wireless data transmission mode was adopted to realize wireless connection between sensor data and computer. Power consumption experiments of rotary blade rollers were carried out on the test bench. Taking forward speed, rotary speed and tillage depth as the experimental factors, and power consumption as experimental index, the rotating perpendicular combination experiment was conducted on standard rotary blade roller. The effects of the three factors on power consumption were studied and the regression (equation) of the experimental index and factors was established. In addition, the comprehensive experiment was carried out on combined rotary blade roller with the index of power consumption, and the effects of width and installation angle of the helical blade were analyzed. The above experiments verified that the presented test bench can meet the requirements of multi-factor and multi-level experiment, and the good adaptability to different rotary blade components.