The bolt fracture of rubber bushing can be prevented in advance. How should we prevent it? Let's take a look at the details.

　　1. 确保衬板与筒体结合良好

　　1. Ensure that the lining plate and the cylinder are well combined

　　这是从一开始就防止螺栓断裂的方法。考虑衬板安装时，可采用3~5mm的石棉板代替水泥砂浆填充衬板与缸体之间，保证衬板与缸体连接良好。

　　This is the way to prevent bolt fracture from the beginning. When considering the installation of lining plate, asbestos plate of 3 ~ 5mm can be used instead of cement mortar to fill the space between lining plate and cylinder body, so as to ensure good connection between lining plate and cylinder body.

　　尽量使用正规厂家采购的衬垫和螺栓

　　Try to use gaskets and bolts purchased by regular manufacturers

　　由于从正规厂家采购的垫板和螺栓质量有保证，使用寿命长，垫板容易破碎变形，螺栓配合不好，螺栓松动。莱州金桥集团生产球磨机橡胶衬板30年，服务于100多家大型企事业单位，如果您需要购买，请与我们联系。

　　Because the quality of the base plate and bolt purchased from the regular manufacturer is guaranteed, the service life is long, the base plate is easy to be broken and deformed, the bolt is not well matched, and the bolt is loose. Laizhou Jinqiao Group specializes in the production of ball mill rubber lining for 30 years, serving more than 100 large enterprises and institutions. If you need to buy, please contact us.

　　更换衬板

　　Replacement lining plate

　　为了防止螺栓断裂，必须减小磨体对衬套和螺栓的冲击。因此，建议将箱头的梯形衬管改为50mm高度的扁平衬管，以降低衬管的承载能力，减轻冲击。

　　In order to prevent bolt fracture, the impact of grinding body on Bush and bolt must be reduced. Therefore, it is suggested to change the trapezoid liner at the head of the box into a flat liner with a height of 50 mm, so as to reduce the bearing capacity of the liner and reduce the impact.

　　四、控制温度

　　4、 Control temperature

　　高温会引起衬板和螺栓的变形，从而导致断裂。因此，为了防止此类问题的发生，我们尽量提前将物料烘干，从而控制物料进入磨机的温度不超过300℃。

　　High temperature will cause deformation of lining plate and bolt, which will lead to fracture. Therefore, in order to prevent such problems, we try to dry the materials in advance, so as to control the temperature of materials entering the mill not to exceed 300 ℃.

　　更换螺栓和密封带的螺纹

　　Replace the threads of the bolts and the sealing tape

　　考虑螺栓的螺纹部分的强度和使用的便利,班轮螺栓是由细牙螺纹改为普通的线程,用双螺母锁紧,和原来的麻绳密封与旧运输胶带密封,这样运输带起密封作用,同时缓冲的作用。

　　Considering the strength of the threaded part of the bolt and the convenience of use, the liner bolt is changed from the fine thread to the common thread, locked with double nuts, and sealed with the original hemp rope and the old transport belt, so that the transport belt plays the role of sealing and buffering.

　　拧紧螺栓

　　Tighten bolts

　　为了防止衬套螺栓的断裂源,有必要锤椭圆头的螺栓用大铁锤,同时收紧螺母在磨削过程中,椭圆头的螺栓头和衬板的螺钉孔可以合作。同时，在次拧紧完成后，在磨床停机后，更好一次换班后再拧紧，以便在各种因素引起的松动中拧紧螺栓。

　　In order to prevent the fracture source of the Bush bolt, it is necessary to hammer the bolt with ellipsoidal head with a large hammer. At the same time, during the grinding process of tightening the nut, the bolt head of the ellipsoidal head and the screw hole of the lining plate can cooperate. At the same time, after the completion of the first tightening, after the grinder stops, it is better to tighten the bolts after a shift, so as to tighten the bolts in the looseness caused by various factors.

　　防止小垫板螺栓断裂的方法有六种。在做预防的时候，我们可以从这六点开始。如果我们在做预防的时候有任何不明白的问题，请告知详情。

　　There are six ways to prevent the bolt of small base plate from breaking. When we do prevention, we can start from these six points. If we have any problems in prevention, please let us know the details.