source: http://en.tsxbsy.com/news370595.html release time: 2018-9-19 10:57:00
Cone crusher is a crushing machine suitable for metallurgy, construction, road building, chemistry and silicate industry. According to the difference of crushing principle and the particle size of products, they are divided into many models. Crushers are widely used in mines, smelting, building materials, highways, railways, water conservancy and chemical industries and many other departments. The cone crusher has the advantages of high crushing ratio, high efficiency, low energy consumption and uniform product size. It is suitable for medium crushing and fine crushing of various ores and rocks. The models are mainly divided into SMG series, spring type and HPC series. Their working principle and structure are introduced respectively. The development history, working principle, composition, influencing factors, technical advantages, operation matters, common faults and maintenance of cone crusher are introduced in detail. So do you know how to avoid bolt breakage in cone crusher? Let's take a look at it together.
1. The contact surface between the motor bracket and the crusher lower frame is too small.
nbsp; high-strength bolt connection is to rely on the friction between the contact surfaces of connectors to prevent their sliding each other, contact surface is too small, so that the motor bracket and the lower frame of the crusher contact surface relative slip, in the bolt contact surface produces a huge shear force, resulting in bolt fracture.
2. There is a gap between the motor bracket and the contact surface of the crusher lower frame.
nbsp; motor bracket and crusher lower rack joint surface short-term will produce fine clearance, connection surface will not only produce violent impact load, motor bracket will also be up and down shaking, easy to break bolts.
3, the bolt preload does not meet the requirements.
nbsp; high strength bolts use torsion wrench to tighten the nut, so that the bolt produces a huge and controlled pre-tension, through the nut and pad, the connector also produced the same size of pre-pressure. If the pre pressure is large and small, it will cause uneven force on the joint surface, resulting in the fracture of the bolt. More than
is the cone crusher bolt fracture avoidance method, I hope to help you. Eight hundred and eighty-eight thousand one hundred and eleven