< >设计托辊,如果是特定场合或专用托辊,按设计要求作即可。</P>
< >但如果设计通用托辊,考虑的要多些,结构设计需考虑加工工艺。</P>
< >托辊性能有几个指标需关注:</P>
<P>(1)托辊的使用寿命,各国标准规定的托辊使用寿命不尽相同,但大多数都在20000小时以上;</P>
<P>国外先进水平已达到5万小时以上,有的已达到9万小时。</P>
<P>(2)运行阻力系数,该系数是决定带式输送机运行阻力的主要因素;</P>
<P>国内外较好的托辊的旋转阻力可以达到0.5N。</P>
<P>(3)托辊重量。</P>
<P>当然提高输送机托辊的使用寿命、降低运行阻力系数,托辊的密封性能、设计及加工精度、轴承质量、高耐磨管壳都是要考虑的。</P>
<P>2楼的托辊是现在普遍采用的形式,9楼斑竹的总结值得初学者思考,初学者可收集各种</P>
<P>的托辊结构图,从加工工艺、材料等各方面分析托辊结构的变化(搞清为什么)。</P>
<P><img src="attachments/dvbbs/2005-7/200572811123261476.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200572811123261476.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /></P>
<P><br></P>
<P><img src="attachments/dvbbs/2005-7/200572811124737723.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200572811124737723.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /></P>
<P><br></P>
<P><img src="attachments/dvbbs/2005-7/200572811165715774.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200572811165715774.gif\');}" onmousewheel="return imgzoom(this);" alt="" /></P>
<P>-------------------------------------------------------------------------------</P>
<LI>帖子评价《[求助]皮带机上托辊图纸,请高手批评指正!特别有请馒头哥!》,原因:奖励:助人为乐,用户操作:金钱5,经验5,,对用户:wolaile奖励1个金币!</LI>
<P><br> </P>
[此贴子已经被fox653于2005-8-1 23:16:15编辑过]
|