A stationary jaw crusher requires a robust, correctly designed foundation to ensure stable, long-term operation. The design takes into account the total weight of the crusher, the dynamic load caused by the impact of the jaw plates, and the bearing capacity of the ground. The foundation is laid below the frost line and reinforced with steel bars. Once the concrete has set, the supports are checked for levelness and the concrete is allowed to reach full strength before installation.
A stationary jaw crusher is a reliable, heavy-duty piece of machinery that requires a sturdy and correctly designed foundation to ensure it remains in place, does not vibrate excessively, and operates for many years without breaking down; To achieve this, key parameters must be taken into account and precise calculations carried out in accordance with the relevant standards.
Firstly, the total mass of the crusher itself, including the drive and auxiliary components, is taken into account; then the dynamic load caused by the impact of the jaw plates during rock crushing is added, and the type of ground at the site is also taken into account — its bearing capacity determines the maximum permissible load per square metre of the foundation.
First, the bearing area of the foundation is calculated by comparing the total static and dynamic loads with the bearing capacity of the soil; then, the depth of the foundation is set below the frost line to prevent it from being torn apart in winter, and a steel reinforcement cage is incorporated into the structure to prevent the foundation from cracking due to constant vibrations.
Once the concrete has set, the level of the support platforms must be checked using a spirit level; the deviation must not exceed 0.2 mm per metre, then allow the concrete to cure for the period specified in the standards; only then can the crusher be installed, ensuring that it is immediately level and operates without any misalignment.
