使用小型混凝土搅拌车注意发动机的损耗情况，小型混凝土搅拌车在经过长时间使用后，发动机会出现一些状况，可是小型混凝土搅拌车发动机早期损坏原因都有什么呢，如和日常维护发动机的消耗呢。我们一起来了解一下。
Pay attention to the engine loss when using a small mixer. After a long time of use, the engine of a small mixer will have some problems. But what are the causes of early engine damage of a small mixer, such as the consumption of the engine for daily maintenance. Let's get to know.
小型混凝土搅拌车在维修作业中突出的问题是气门与气门座工作面加工质量达不到要求，造成工作面烧蚀、凹陷而早期损坏；凸轮轴轴承在刮削中其配合间隙、接触面积、各轴承同心度达不到要求，加速磨损，出现异响造成早期损坏；气门导管在更换新零件时，铰削质量如果达不到规定的要求，将会直接影响气门及气门座使用寿命。
The prominent problem of small concrete mixer in maintenance operation is that the machining quality of valve and valve seat working face cannot meet the requirements, resulting in ablation, depression and early damage of the working face; During the scraping of camshaft bearing, its fit clearance, contact area and concentricity of each bearing fail to meet the requirements, which accelerates the wear and causes early damage due to abnormal noise; When the valve guide is replaced with new parts, if the reaming quality fails to meet the specified requirements, the service life of the valve and valve seat will be directly affected.
小型混凝土搅拌车的凸轮轴轴承的刮削属于手工作业，保证质量有一定难度。为刮削方便，又通常在气缸体外加工，因此应特别注意四个问题：一是要确定好轴承刮削后内孔的直径（用公式表述为：内孔直径=轴颈直径实测值+配合间隙下限值+轴承与座孔过盈量实测值）；二是刮削中要尽量注意保持轴承内孔与外圆的同轴度；
The scraping of camshaft bearing of small concrete mixer belongs to manual operation, so it is difficult to ensure the quality. In order to facilitate scraping and generally process outside the cylinder, four problems should be paid special attention to: first, determine the diameter of the bearing inner hole after scraping (expressed by the formula: inner hole diameter=measured value of journal diameter+lower limit of fit clearance+measured value of interference between bearing and seat hole); Second, pay attention to keeping the coaxiality of bearing inner hole and outer circle as much as possible during scraping;
气门的研磨分为两种情况，一是气门与座只有轻微麻点，不需要光磨和铰削时的研磨；二是气门与座均已经过光磨和铰削后的研磨。前者先用租金刚砂研磨，将麻点研磨掉后，再用细金刚砂研磨，然后涂上机油研磨，直密封符合要求，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。
The grinding of the valve can be divided into two cases: one is that the valve and seat have only slight pitting, so the grinding of smooth grinding and reaming is not required; Second, the valve and seat have been polished and reamed. The former is first ground with emery, after the pitting is removed, it is then ground with fine emery, and then coated with oil for grinding until the sealing meets the requirements and the width meets the requirements. The latter shall be grinded only when the sealing performance fails to meet the requirements. However, care must be taken during operation to avoid excessive force. It is strictly prohibited to knock the valve up and down, or concave sand marks will appear, which will affect the maintenance quality.
小型混凝土搅拌车发动机早期损坏原因就是以上所讲的内容了，您对此有什么相关的问题要咨询，可以随时来我们网站http://www.zkzdsljbc.com进行了解联系！
The reason for the early damage of the engine of small concrete mixer is the above content. If you have any questions about this, you can come to our website at any time http://www.zkzdsljbc.com Get to know!
