玉米秸秆环模压块机是玉米秸秆机械四大主机之一,很大程度上决定了玉米秸秆加工产量,在玉米秸秆加工过程中占有非常重要的地位。目前,国内在玉米秸秆玉米秸秆环模压块机压块机理方面的研究几乎是空白,而且压块机与国外同类型设备相比仍然存在结构不合理,生产效率偏低、能耗偏高等缺陷,这极大地制约了产品的国际竞争力。
在对环模玉米秸秆压块机的模辊受力情况分析基础之上,利用简化力学模型计算了环模玉米秸秆压块机设计的主要技术参数,通过对其动力的设计确定电动机的选择,对碾压装置的设计计算确定电动机的功率,成型模孔的设计及其传动系统的设计,心轴的校核,键的选择及强度校核等。在此基础之上,设计了用于生产秸秆成型压块的环模玉米秸秆压块机。研究玉米秸秆玉米秸秆环模压块机理与结构优化技术,对提升玉米秸秆机械整体设计、制造水平,促进玉米秸秆工业的发展具有重要的理论意义与实用价值。
关键词:环模,压辊,压块机,压块机理,优化
Corn straw ring molding machine is one of the four main machines of corn straw machinery,which determines the yield of corn straw processing to a great extent,and occupies a very important position in the process of corn straw processing. At present,the research on the mechanism of corn straw ring molding block is almost blank in our country,and there are still some defects such as unreasonable structure,low production efficiency,high energy consumption and so on,compared with the same type of equipment in foreign countries. This has greatly restricted the international competitiveness of the product.
Based on the analysis of the force on the mould roller of the ring mould corn straw briquetting machine,the main technical parameters of the ring mould corn straw briquetting machine are calculated by using the simplified mechanical model,and the selection of the motor is determined by the design of its dynamic force. The power of the motor,the design of the forming die hole and its transmission system,the check of the spindle,the selection of the key and the strength check,etc.,are determined by the design calculation of the roller compacting device. On this basis,a ring mold corn straw briquetting machine was designed for the production of straw briquetting block. The mechanism and structure optimization technology of corn straw ring molding block are studied in order to improve the whole design and manufacture level of corn straw machinery and promote jade. The development of rice straw industry has important theoretical significance and practical value.
Key words: ring mould,roller,press block mechanism,optimization
目 录
1.3.2玉米秸秆玉米秸秆环模压块机环模和压辊结构参数的优化13
3.1.2环模孔塑性变形对玉米秸秆玉米秸秆环模压块机性能的影响27
3.2.1物料泊松比和摩擦系数对环模孔轴向挤压压强的影响分析28