结晶器无极变振幅偏心振动装置设计
时间:2019-09-24 20:17 来源:毕业论文 作者:毕业论文 点击:次
| 摘要结晶器是连铸连轧设备中的关键设备，振动装置是结晶器不可缺少的部分。理论的不同，结晶器振动技术也历经了复杂的过程，早期主要由凸轮实现的正弦振动，由于不能在线调节，未能实现振动波形的优化；由于采用四杆机构使机械动作更加简便，故结晶器正弦振动得到了延续，通过不断地对其参数进行优化，实现高频四连杆振动以改善结晶器连铸铸坯工作件表面的工程质量。 本课题采用偏心四杆作为激振的震动的动力源，并使用杠杆机构将震动传递至结晶器的震动装置，巧妙地利用杠杆机构的基本原理，通过杠杆调节支点实现振幅的无极变速提调节。都知道齿条机构具有自锁特性，就可以方便地实现工作过程中不停机进行震动装置无极连续调节并锁定当前振幅；为使偏心振动机构的传动路线尽量短，因此不使用减速装置，并使用弹性联轴器进行隔离震动载荷、保护电机。39438 毕业论文关键词：结晶器，无极变振幅，结晶震动技术，振动装置 Abstract The crystallizer is the key part of continuous casting and rolling equipment, and vibration devices is an indispensable part of the mold. Based on different theories, mold oscillation technology has undergone complex process. In the early days, the way to achieve sinusoidal vibration is mainly by cams. Because it can’t be regulated online, it failed to achieve the optimization of vibration waveform. As a result of the eccentric mechanism, mechanical movements become easier, therefore, mold sinusoidal vibration slowly began to grow. After its vibration parameters continually optimized, ultimately the high-frequency vibration achieved, which can be used to improve the surface quality of the slab. This paper uses an eccentric axis as the excitation source, and use lever mechanism to transmit vibration to the crystallizer. The basic principle of the lever mechanism was used to achieve the amplitude adjustment Promise mention, by adjusting the fulcrum. A screw nut mechanism is used to implement the fulcrum position adjustment. Since the screw nut mechanism has self-locking feature, we can easily adjust and lock the current Promise continuous amplitude, when the device still work. To achieve the purpose that eccentric drive mechanism has the shortest route, we do not use any deceleration devices. Therefore, we need a flexible coupling to isolate shock load and protect the motor. Keywords: Crystallizer, Promise amplitude change, the technology of crystallization shock, vibration device; 目录 摘要 I Abstract II 目录 III 第一章 结晶器振动技术 1 1.1 结晶器振动技术发展的历史 1 1.2 连铸机结晶器振动简介 2 1.3 结晶器振动规律的演变 2 1.4 结晶器振动和润滑的关系 5 1.4.1 结晶器振动与保护渣的关系 5 1.4.2 结晶器的润滑机理 7 1.4.3 结晶器中摩擦力的分布 8 第二章 震动装置方案论证 9 2.1 本课题研究的目的 9 2.2 课题研究内容 9 2.3 课题方案的选择 9 2.3.1 振动机构简介 9 2.3.2 振动机构的选择 13 第三章 震动装置的设计 14 3.1 电机计算 14 3.2 联轴器选型 15 3.3 偏心轴设计 16 3.4 连杆的设计 17 3.5 主梁的设计 18 3.6 主梁支点轴的设计 19 第四章 震动装置的详细设计与校核 20 (责任编辑：qin) |