冷轧带钢卷取机设计

摘要

卷取机是冷轧带钢生产的重要设备，将轧制的很长的带钢卷成钢卷，有利于生产、运输和储存。近年来，冷轧机向高速度、大卷重、自动化方向发展，在卷取机结构上也做了较大的改进。大张力卷取机要求卷筒强度高，刚度大、带钳口，采用四棱锥卷筒；高速卷取机要求卷筒胀开后外径为一整圆，四棱锥结构卷筒的扇形板对称，动平衡性能好，卷筒飞轮力矩小，棱锥强度高，扇形板刚度大，卷筒可以整体更换，完全适应高速连轧机的卷取要求。

为了满足现代化生产的需要，本次设计的这种新型的带材卷取机，在结构上采用机械钳口的卷筒，卷筒由四块扇形板组成，在扇形板上设有钳口，用于夹紧带钢。当卷取结束时，通过液压缸推动棱锥轴移动，扇形板收缩卸下带卷。在设计过程中对卷筒的径向压力进行了精确的计算，并对卷筒强度进行了准确校核。同时，还对卷筒胀缩机构的液压缸和钳口等部件进行了详细的受力分析和相关计算，最后还对卷取机在使用过程中应注意的问题进行了详细的论述。

关键词：空心轴、棱锥轴、扇形板、钳口

ABSTRACT

The coiler is the important equipment in cold-strip steel production.It is advantageous in the production, the transportation and the storage to be rolling in a long strip. In recent years, the cold-rolling mill to the high-speed, re-Large, automated way, the structure of the coiler has done a great improvement. The tension coiler request the reel have a high strength, stiffness. The big tensity coiler request the reel have a high intensity, a big rigidity,with a mouth of the tongs, uses four pyramid reels on the rolling. The outer diameter must be form an entire circle when the high speed coiler open the roll.The configuration of the four pyramid reels will be symmetrically, the transient equilibrium performance is good,the flywheel torque of the reel is small,the intensity of the pyramid shaft is high, the stiffness of the sector plates is big,the reel may be overall replacement, adapt the high speed rolling mill to roll.

In order to meet the needs of modern production, I design this kind of new strip coiler. Uses the mechanical mouth of the tongs in the reel structure. The reel is composed of four sector plates.The mouth of the tongs in the sector plates is used to clamping the strip. At the end of the coiling, the hydraulic cylinder promotes the pyramid shaft migration, the mouth of the tongs will be shrink, the quadrant contraction to unload the reel. In the design process make an accurately count to the radial pressure. To verify the intensity of the reel by rule and line. Contemporary, analyzed the presse and relatively count for the shrank parts and hydraulic cylinder. The end of the design discuss the questions which should be pay attention in the use process.

Key words: hollow shaft,pyramid shaft,sector plates,mouth of the tongs

目录

前言 (1)

第1章卷取机简介 (2)

第2章冷轧带钢卷取机 (5)

2.1 冷轧带钢卷取机的工作特点与类型 (5)

2.2 冷带钢卷取的工艺特点 (5)

2.3 冷带钢卷取机的结构 (7)

第3章卷筒式卷取机设计 (13)

3.1 卷筒结构形式的选择 (13)

3.2 主要参数的确定 (14)

3.3 卷筒径向压力计算 (17)

3.4 卷筒强度条件 (20)

3.5 卷筒胀缩机构受力分析 (21)

3.6 卷筒钳口液压缸夹紧力计算 (26)

3.7 轴向胀缩液压缸行程计算 (28)

第4章卷取机使用过程中应注意的问题 (30)

第5章减速器设计 (31)

5.1 初步确定减速器结构和零部件类型 (31)

5.2 分配减速器的各级传动比 (31)

5.3 计算传动装置的运动和动力参数 (31)

第6章空心轴的校核 (33)

6.1 按扭转强度条件计算 (33)

6.2 按弯扭合成强度条件计算 (34)

6.3 精确校核轴的疲劳强度 (37)

6.4 静强度安全系数校核 (40)