As the part with the most serious wear and tear of the jaw crusher, it is necessary for us to understand its movement characteristics, so that we can have some positive help in daily maintenance, replacement of parts, or reducing wear and tear. The following are the five main characteristics of the jaw crusher jaw movement.
1. When the jaw plate presses the material, the movable jaw plate will partially move downward with the material, which will generate a force that prompts the material to move downward, thereby speeding up the discharge speed and increasing the output. Practice has proved that the output of the complex swing jaw crusher is about 20%-30% higher than that of the simple swing jaw crusher of the same specification.
2. The horizontal swing of the upper part of the movable jaw is greater than that of the lower part, so that large pieces of material can be easily crushed in the upper part, and the working area of the entire jaw plate is relatively uniform, which conforms to the crushing principle and is conducive to the uniformity of the jaw plate's working load.
3. Because the lower part of the movable jaw has a large downward vertical moving force during unloading, it can not only promote unloading, but also repeatedly flip the crushed products, reduce long flake products, and unload in the form of cubic blocks. In a complex swing jaw crusher, the material is not only crushed, split and broken, but also ground, which increases the crushing force of the material and is also conducive to improving production capacity.
4. Due to the large vertical displacement of the movable jaw, the friction between the material and the jaw plate is aggravated, causing the jaw plate to wear faster. At the same time, the over-crushing phenomenon is aggravated, so the dust generated is larger.
5. When crushing materials, the movable jaw bears a huge crushing force, part of which acts on the eccentric shaft and bearings, especially for large complex swing types. The force is very large. Therefore, complex swing jaw crushers are usually made into medium and small sizes.
Since jaw crushers often handle ores or other materials with high hardness and large particle size, they have large losses. By understanding the movement characteristics of the movable jaw plate, we can minimize its losses and reduce costs.