400 jaw crusher toggle plate safety plate top plate special accessories manufacturer

The jaw crusher toggle plate is a precisely calculated cast iron part. It is not only a force transmission component, but also an insurance part of the crusher. When unbreakable materials fall into the crusher and cause the machine to exceed the normal load, the toggle plate will break immediately and the crusher will stop working, thereby avoiding damage to the entire machine. This article will focus on four aspects: work content, function, and stress analysis. Let’s introduce the toggle plate of jaw crusher.
, Working content of toggle plate
When the crusher is working, the motor drives the main shaft to rotate through the triangle belt, making the connecting rod move up and down. When the connecting rod rises, the angle between the front toggle plate and the rear toggle plate becomes larger, thus pushing the movable jaw plate closer to the fixed jaw plate and crushing the material at the same time. When the connecting rod goes down, the front toggle plate and the rear toggle plate The angle between the plates becomes smaller, and the movable jaw plate leaves the fixed jaw plate under the action of the tension spring. At this time, the crushed material is discharged from the crushing chamber. As the motor continues to rotate, the crusher swings periodically around the fixed spindle to crush the material.
, The function of the toggle plate
The rear toggle plate of the jaw crusher has two functions: First, when non-crushed objects enter the crushing cavity, the toggle plate can be broken first to protect other parts of the machine. It is the safety part of the crusher. The second is to replace the toggle plate of different lengths to adjust the size of the ore discharge port. Therefore, the toggle plate is both a wearing part and an insurance part.
Toggle plate stress analysis
In normal work, if the toggle plate and the toggle plate seat are not lubricated well, it will cause the toggle plate head and the toggle plate seat to wear out quickly and reduce the service life. . At this time, a large extrusion force is transmitted between the toggle plate head and the toggle plate seat, and the impact load is borne. When the crusher falls into non-crushed objects, in order to prevent the important parts of the machine from being damaged, and because the toggle plate is the cheapest part in the machine, it is usually used as a safety part. During the design, Red Star Heavy Industry in order to prevent the important parts of the machine from being damaged Damage, and because the toggle plate is the cheapest part in the machine, it is usually used as a safety part to deliberately increase its acting stress or weaken its section so that it will be damaged when overloaded. To achieve insurance purposes. However, it is difficult to accurately calculate the crushing force during design. Sometimes it is overloaded and it is not destroyed, and sometimes it is not overloaded and it is destroyed.
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