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关于联轴器的选择问题
联轴器的选择主要考虑所需传递轴转速的高低、载荷的大小、被联接两部件的安装精度等、回转的平稳性、价格等,参考各类联轴器的特性,选择一种合用的联轴器类型。具体选择时可考虑以下几点:
1.1YOUYUZHIZAO、ANZHUANG、SHOUZAIBIANXINGHEWENDUBIANHUADENGYUANYIN,DANGANZHUANGDIAOZHENGHOU,NANYIBAOCHILIANGZHOUYANGEJINGQUEDUIZHONG。CUNZAIYIDINGCHENGDUDE x、YFANGXIANGWEIYIHEPIANXIEJIAOCI。DANGJINGXIANGWEIYIJIAODASHI,KEXUANHUAKUAILIANZHOUQI,JIAOWEIYIJIAODAHUOXIANGJIAOLIANGZHOUDELIANJIEKEXUANYONGWANXIANGLIANZHOUQIDENG。DANGGONGZUOGUOCHENGZHONGLIANGZHOUCHANSHENGJIAODADEFUJIAXIANGDUIWEIYISHI,YINGXUANYONGNAOXINGLIANZHOUQI。
1.2联轴器的工作转速高低和引起的离心力大小。对于高速传动轴,应选用平衡精度高的联轴器,例如膜片联轴器等,而不宜选用存在偏心的滑块联轴器等。
1 . 3所需传递的转矩大小和性质以及对缓冲振动功能的要求。例如,对大功率的重载传动,可选用齿式联轴器。对严重冲击载荷或要求消除轴系扭转振动的传动,可选用轮胎式联轴器等。
绝大多数联轴器均已标准化或规格化(见有关手册)。设计者的任务是选用,而不是设计。选用联轴器的基本步骤如下:
选择联轴器的类型
GENJUCHUANDIZAIHEDEDAXIAO,ZHOUZHUANSUDEGAODI,BEILIANJIELIANGBUJIANDEANZHUANGJINGDUDENG,CANKAOGELEILIANZHOUQITEXING,XUANZEYIZHONGHEYONGDELIANZHOUQILEIXING。JUTIXUANZESHIKEKAOLVYIXIAJIDIAN:
1) SUOXUCHUANDIDEZHUANJUDAXIAOHEXINGZHIYIJIDUIHUANCHONGJIANZHENGONGNENGDEYAOQIU。LIRU,DUIDAGONGLVDEZHONGZAICHUANDONG,KEXUANYONGCHISHILIANZHOUQI;DUIYANZHONGCHONGJIZAIHEHUOYAOQIUXIAOCHUZHOUXINIUZHUANZHENDONGDECHUANDONG,KEXUANYONGLUNTAISHILIANZHOUQIDENGJUYOUGAODANXINGDELIANZHOUQI。
2)LIANZHOUQIDEGONGZUOZHUANSUGAODIHEYINQIDELIXINLIDAXIAO。DUIYUGAOSUCHUANDONGZHOU,YINGXUANYONGPINGHENGJINGDUGAODELIANZHOUQI,LIRUMOPIANLIANZHOUQIDENG,ERBUYIXUANYONGCUNZAIPIANXINDEHUAKUAILIANZHOUQIDENG。
3) LIANGZHOUXIANGDUIWEIYIDEDAXIAOHEFANGXIANG。DANGANZHUANGDIAOZHENGHOU,NANYIBAOCHILIANGZHOUYANGEJINGQUEDUIZHONG,HUOGONGZUOGUOCHENGZHONGLIANGZHOUJIANGCHANSHENGJIAODADEFUJIAXIANGDUIWEIYISHI,YINGXUANYONGNAOXINGLIANZHOUQI。LIRUDANGJINGXIANGWEIYIJIAODASHI,KEXUANHUAKUAILIANZHOUQI,JIAOWEIYIJIAODAHUOXIANGJIAOLIANGZHOUDELIANJIEKEXUANYONGWANXIANGLIANZHOUQIDENG。
4)LIANZHOUQIDEKEKAOXINGHEGONGZUOHUANJING。TONGCHANGYOUJINSHUYUANJIANZHICHENGDEBUXURUNHUADELIANZHOUQICIJIAOKEKAO;XUYAORUNHUADELIANZHOUQI,QIXINGNENGYISHOURUNHUAWANSHANCHENGDUDEYINGXIANG,QIEKENENGWURANHUANJING。HANYOUXIANGJIAODENGFEIJINSHUYUANJIANDELIANZHOUQIDUIWENDU、FUSHIXINGJIEZHIJIQIANGGUANGDENGBIJIAOMINGAN,ERQIERONGYILAOHUA。
5)联轴器的制造、安装、维护和成本。在满足便用性能的前提下,应选用装拆方便、维护简单、成本低的联轴器。例如刚性联轴器不但结构简单,而且装拆方便,可用于低速、刚性大的传动轴。一般的非金属弹性元件联轴器(例如弹性套柱销联轴器、弹性柱销联轴器、梅花形弹性联轴器等),由于具有良好的综合能力,广泛适用于一般的中、小功率传动。