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联系人:刘老师

电话:400-879-1999

公司:山东山汽工程机械(集团)有限公司

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全自动上料搅拌车发动机早期损坏的原因有哪些?

所属分类:行业资讯 发布时间:2022-03-23 来源:http://www.sqjituan.cn/ 浏览量:18

1、全自动上料搅拌车的维修数据应用不当在自上料搅拌车维修中不能科学的选择维修数据是造成机件早期损坏的重要原因,比如气门与气门座接触面的宽度,规定进气门为1-2.2mm,排气门为1.5-2.5mm,但在实际维修当中,很多人认为宽一点比窄一点要好,习惯选用上限或接近上限值,因为刚修好的车气门工作面宽度就已经接近使用限度了,再比如气门脚间隙,一般车辆规定为0.2-0.25mm,但在维护调整中也会认为间隙大一点比小一点好,因此,超上限使用,实际上间隙过大,不但降低发动机功率,还会出现敲击声而早期损坏。
1. Improper application of the maintenance data of the fully automatic charging mixer is an important reason for the early damage of the machine parts. For example, the width of the contact surface between the valve and the valve seat is 1-2.2mm, and the exhaust valve is 1.5-2.5mm. However, in the actual maintenance, many people think that a wider one is better than a narrower one, and are used to selecting the upper limit or close to the upper limit, Because the width of the valve working surface of the newly repaired vehicle is close to the use limit. For example, the valve foot clearance is generally 0.2-0.25mm, but it will also be considered that a larger clearance is better than a smaller clearance in maintenance and adjustment. Therefore, if it is used beyond the upper limit, in fact, the clearance is too large, which will not only reduce the engine power, but also cause knocking sound and early damage.
2、全自动上料搅拌车气门的光磨在自上料搅拌车的维修中,如果气门出现烧蚀、麻点及凹陷时,均应进行光磨,一般是在光磨机上进行,作业时需要注意四个问题:一是保证气门头与杆部同心,否则应先校直。二是光磨辆在能磨出完整的锥面的前提下是越小越好。三是尽量提高表面光洁度。四是气门杆端部凹陷应予以磨平。
2. The smooth grinding of the valve of the full-automatic feeding mixer truck in the maintenance of the self feeding mixer truck, if the valve appears ablation, pitting and depression, it should be polished, which is generally carried out on the smooth mill. Four problems need to be paid attention to during operation: first, ensure that the valve head is concentric with the rod, otherwise it should be straightened first. Second, on the premise that the smooth grinding vehicle can grind a complete cone, the smaller the better. Third, try to improve the surface finish. Fourth, the depression at the end of the valve stem should be ground flat.
3、全自动上料搅拌车气门导管的铰销气门杆与气门导管配合间隙是决定气门导管使用寿命的关键。因此当更换气门导管时,铰销时应严格掌握好配合间隙,使用各搅拌车车型规定间隙的下限,延长使用寿命。
3. The fit clearance between the hinge pin valve stem and the valve guide of the valve guide of the automatic feeding mixer is the key to determine the service life of the valve guide. Therefore, when replacing the valve guide, the matching clearance should be strictly controlled during hinge pin, and the lower limit of the clearance specified by each mixer model should be used to prolong the service life.
4、全自动上料搅拌车气门的研磨自上料搅拌车气门的研磨分为两种情况:一是气门与气门座只有轻微麻点,不需要光磨和铰销时的研磨。二是气门与气门座均经过光磨和铰销后的研磨,前者先用足金钢砂研磨,将麻点研磨掉后,再用细金刚砂研磨,后涂上机油研磨,直至密封符合要求,宽度符合规定为止,后者只有密封性达不到要求时才进行研磨,但操作时一定要注意,不要过分用力,严禁将气门上下敲打,否则将出现凹形砂痕,影响维修质量。
4. The grinding of the valve of the fully automatic feeding mixer can be divided into two situations: one is that there are only slight pits between the valve and the valve seat, and there is no need for light grinding and grinding during hinge pin. Second, the valve and valve seat are ground after smooth grinding and hinge pin. The former is ground with full gold steel sand, the pitting is ground off, then ground with fine emery, and then coated with oil for grinding until the sealing meets the requirements and the width meets the regulations. The latter is ground only when the sealing fails to meet the requirements, but it must be noted during operation that excessive force is not allowed to knock the valve up and down, otherwise concave sand marks will appear, Affect the maintenance quality.
以上就是为大家介绍的有关自动混凝土搅拌机的详细介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以专业的态度,为您提供服务http://www.sqjituan.cn
The above is a detailed introduction to the automatic concrete mixer. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.sqjituan.cn
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