内衬层挤出机输出轴安全销折断的原因分析及改进方法
2021-07-15符式贵
符式贵



摘 要:根据内衬层压延线橡胶挤出机主减速箱输出轴与齿套之间的结构,本文对输出端中间盘安全销频繁折断的原因进行分析,明确其折断的原因,然后通过多次试验,确定采取在输出轴与齿套之间增加双平键、重配安全销孔等措施进行改造,并通过计算有效地论证该改造的可靠性。经过多年的使用跟踪,电气过载有效保护,扭矩传递正常,较好地解决了输出轴安全销频繁折断的设备故障,为企业创造一定的经济效益,此工艺可为类似设备设计和改造提供有效的技术参数。
关键词:减速箱;输出轴;安全销;平键
中图分类号:TH132.46;TD40文献标识码:A文章编号:1003-5168(2021)06-0056-04
Cause Analysis and Improvement Method of the Breaking of
the Safety Pin of the Output Shaft of the Inner Liner Extruder
FU Shigui
(Guofang Science and Technology Technician Institute of Guangdong Province,Guangzhou Guangdong 510515)
Abstract: According to the structure between the output shaft and the gear sleeve of the main reduction box of the lined laminated rubber extruder, this paper analyzed the reason for the frequent breaking of the safety pin of the intermediate disc at the output end, and clarified the reason for the breaking, then determined to take measures such as adding a double flat key between the output shaft and the gear sleeve and reconfiguring the safety pin hole for transformation through many experiments, and effectively demonstrated the reliability of the transformation through calculations. After years of tracking, the electrical overload is effectively protected, and the torque transmission is normal, which solves the problem of frequent breakage of the output shaft safety pin, and creates certain economic benefits for the enterprise. This process can provide effective technical parameters for the design and transformation of similar equipment.
Keywords: gearbox;output shaft;safety pin;flat key
橡胶挤出机广泛应用于橡胶工业中,功能是采用加热、加压和剪切等方式,将带状的胶片转变成均匀一致的胶料,然后将胶料送到下一个工序[1-2]。内衬层压延线橡胶挤出机(下称内衬层挤出机)主减速箱的输出轴与齿套之间有一个中间盘,中间盘由16根[Ф]25 mm安全销传递扭矩,进行防过载保护。其中,每个安全销均由一颗M14内六角螺钉固定,安全销及中间盘被固定在输出轴上。在实际生产中,安全销频繁折断,给生产和维修带来很多的不便,抢修难度大。据统计,断销大多发生在中夜班,造成抢修人员连续、疲劳作战,生产计划也受到一定的影响[3-4]。随着设备的不断更新换代和安全保护措施的完善,一些复杂且故障率高的机构逐步得到改进[5]。内衬层挤出机的主減速箱输出轴将存在诸多不稳定因素的安全销作为动力传递途径,严重影响正常生产,因此本文通过双平键改造及重配销孔来解决频繁断销问题。……
