在线 丝袜 欧美 日韩 制服_自拍偷拍一区二区三区四区_久久黄色免费网站_久久国产视频精品_精品国产免费久久久久久婷婷_销魂美女一区二区_精品无码一区二区三区的天堂_亚洲欧美另类日本_人妻aⅴ无码一区二区三区_日韩黄色a级片

  Pusher is a special equipment for heating billet in reheating furnace in rolling production line. Mechanical pusher is often used in old production line, which has large volume, high price, high failure rate and complex maintenance. In practical application, equipment such as pusher requires synchronous control, which requires the electronic control device to have the characteristics of fast synchronization, accurate positioning, etc. most of the original production equipment uses friction plate mechanical clutch to connect two or more mechanical hard, so as to complete the same step of equipment location.