论文部分内容阅读
主要公式符号P——个机架负担的最大轧制力;R——个轧辊作用给一个机架的水平力,I_1—开口式机架下横梁之中和线长度;或闭口式机架上下横梁之中和线长度;I_2—立柱中和线长度;I_3—开口式机架盖之中和线长度;J_1—开口式机架下横梁之惯性矩,或闭口式机架上下横梁之惯性矩;J_2—立柱之惯性矩;C—下面凸台与下横梁中和线的距离;e—凸台受力点与立柱中和线的距离;·F_3—机架盖之横断面面积;E—弹性模数;δ—当水平超静定力T=l时,机架盖的拉伸变形。一、轧钢机简述轧钢机架有开口式和闭口式两种主要型式。 (一)、开口式轧钢机架开口式轧钢机架有可拆卸的机架盖,从机架开口处拆换轧辊,不需要专门的设备。因机架窗口窄小,缩小了机架的外形尺寸,因而机架的外边与轧辊距离缩短,导卫装置也较简单。尤其型钢轧辊凸缘很大采用开口式机架较为合适。对横列式布置的型钢机架,为了换辊方便都采用开口式。用于对机架不要求有很大刚性并需经常更换轧辊的地方。开口式机架有多种型式。目前国内外设计采用的有:销轴式(如图2)、斜楔式(如图5)、开启式(如图10)。销轴式机架两边有斜楔打紧和销轴共同作用,机架与机架
The main formula symbols P - the maximum rolling force of a rack load; R - the horizontal force of a roll acting on a rack, I_1 - the length of the neutral line of the lower beam of the open rack; or the closed rack up and down I_2-column neutralization line length; I_3-opening rack cover and the length of the line; J_1-open rack lower beam of the moment of inertia, or closed-frame rack up and down the beam moment of inertia ; J_2 - the moment of inertia of the column; C- the distance between the lower boss and the lower beam neutralization line; e- the distance between the force point of the boss and the neutral line of the column; F_3- the cross-sectional area of the frame lid E- Elastic modulus; δ - when the level of ultra-static force T = l, the tensile deformation of the rack cover. First, a brief description of rolling mill There are two types of rolling mill rack open and closed type. (A), open-type rolling stand Open-type rolling stand with detachable rack cover, remove the roll from the rack opening, do not need specialized equipment. Due to the narrow frame window, reducing the frame size, so the outer frame and the roller shorten the distance, guide the device is also relatively simple. In particular, the use of large open-type flange roll flange is more appropriate. On the column layout of the steel frame, in order to facilitate the use of roller opening are open. For the rack does not require a very rigid and often need to replace the roll place. There are many types of open racks. At present, the design used at home and abroad are: pin-type (Figure 2), wedge-type (Figure 5), open type (Figure 10). Pin-type rack on both sides of the wedge tightness and pin together, rack and rack