Introduction to the design and calculation of the disc and hammer of the hammer crusher

First of all, the structural design and calculation of the hammer crusher disc

There are 8 hammers required to break each pin on the hammer. The disc is used to suspend the hammer head. A total of 9 discs are required, according to the design requirements. The two sides of the two sides have the common feature of setting the lock nut on one side and the shoulder on the other end. The nut used is GB-812-85, so that each disc is evenly distributed with 6 circular holes, that is, it can pass through six pins, which are used to suspend the hammer head, and the gap between the hammer head and the disc is connected by the shaft. Separated by spacers, in order to maintain the front side of the disc, reduce or minimize the wear on the sides. The size of the disc depends on the diameter of the rotor, and the size of the diameter of the rotor is the basis for the design size of the disc. Because the crusher of this type can be known by its model, the diameter of the rotor is 800mm, so the value of the size of the disc has a certain range. It is not necessary to take the distance of the 560mm round hole in the radial direction according to the ability and strength to bear the load, and take the integer as much as possible; the size of the round hole and the size of the round hole of the hammer head are approximately equal.

The thickness of the hammer crusher disc is also not suitable for the strength requirements and working conditions. The discs are also separated by the sleeve of the main shaft (the function is to rotate at high speed, the disc is connected with the main shaft through the key and rotates with the main shaft at high speed, so there must be a keyway in the structure to ensure the smooth movement of the disc. And its axial positioning is low on stress concentration.

Secondly, hammer hammer design and calculation

The design of the hammer breaking hammer mainly refers to the design of the structure. Because the shape, quality, material of the hammer and the production capacity of the crusher have a great influence. In particular, the shape has a great influence on the distribution of quality and the full utilization of data. The structural design and related improvements of the hammerhead are discussed in more detail in the topic. In short, the hammer is the main working part. Its shape, structure design, for its working ability, the production capacity of the entire machine. And economics and other aspects have far-reaching effects. The shape of the hammer head is generally light, medium and heavy. This type of hammer crusher is mainly designed with a medium-sized hammer. And there are related calculations.

Hammer crusher hammer may also be high-manganese steel casting. In order to improve its wear resistance, the choice of hammer material is a critical issue. The choice of materials depends on the working conditions and requirements of the working parts. Because the crusher is to be crushed limestone and other medium hardness materials. Generally forged or cast with high carbon steel. Low manganese high-alloy steels, coated cemented carbide outer some work. Some high-chromium cast iron, which is several times greater wear resistance than the high manganese steel hammer. Regarding the selection of data, the topical topic: in the study of improving the wear resistance of the hammerhead, there is a special discussion. In short, the selection of hammerhead materials is not only related to the working life of the hammerhead, the production capacity of the machine, the production efficiency, but also the economics of all aspects.

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