一、概述 1.活套装置的作用及其结构 恒定的小张力微套轧制是现代带钢热连轧机的一个基本特点。正常连轧时,带钢段比架距稍长一点,靠活套辊将其绷紧,产生给定的小张力。因此活套机构在现代带钢热轧机中,占有很重要的位置,它使连轧机在各种外来带速偏差的干扰下,通过其缓冲作用始终保持恒定的小张力微套轧制。它具有两个主要作用: (1)检测带钢长度 活套机构是一个很灵敏的带长检测器。既使带长只伸缩了几十个毫米,活套辊也会发生明显的摆动。如活套机构正常工作角定为25°(对应带钢套长l=18毫米),当套长变化量Δl=±10毫米肘,活套辊将摆动于18°— I. Overview 1. Looper device and the role of a constant structure of small tension Micro-sets of rolling is a modern hot strip mill a basic feature. During normal rolling, the strip section is slightly longer than the rack and is tensioned by a looper roll to produce a given small tension. Therefore, the looper mechanism occupies a very important position in the modern strip hot rolling mill, which enables the continuous rolling mill to maintain constant small tension by the buffering effect under the interference of various external belt speed deviations. It has two main roles: (1) Detection of strip length The looper mechanism is a very sensitive strip length detector. Even if the length of the telescope only tens of millimeters, looper roll will occur significant swing. Such as looper mechanism normal working angle is set at 25 ° (corresponding to the ladle length l = 18 mm), when the sleeve length variation Δl = ± 10 mm elbow, the looper roll will swing at 18 ° -