Main Advantages of the Cone Crusher
- High throughput capacity, depending on the specific requirements.
- High degree of crushing in the secondary stage.
- Increased proportion of cubical grain in the final product for the production of fine chippings.
- Low maintenance costs and highly wear resistant crushing tools.
- Low operating costs.
The cone crusher is very efficient for various crushing jobs in the second and third crushing stages. Due to the inclination of the crushing tools it is particularly suited for the production of fine chippings. For this task the fully hydraulic adjustment offers considerable advantages, the gap width being easily adjustable, both unloaded or under load. The adjustment is effected on the machine or from a central switchboard gallery.
Due to the well arranged local control instruments the closed circuit hydraulic system can easily be monitored.
The main control functions can be effected either fully automatic or manually.
The machine unit requires a switch cabinet to accommodate the electrical switching and control devices. This cabinet should be provided by the customer. On request we can supply this as an accessory.
The eccentric bushing of the cone crusher, which supports the cone shaft, is driven by an electric motor via V-belts and a helical toothed bevel gear. The helicalgears ensure smooth running.
The main bearing of the moving parts is an amply dimensioned and relatively sturdy sliding bearing. The horizontally arranged driving shaft is provided with roller bearings. Generous oil circulation guarantees efficient lubrication of the bearings. In order to prevent dust from entering into the driving and bearing system, low maintenance wear-resisting seals are installed in all the important locations.
A hydraulic/electronic control governs the hydraulic unit, which allows adjusting and monitoring of the gap width as well as protection of the granulator against excessive loads.
All functioning elements are contained in an electronic switch cabinet equipped with a dust and splash-proof front panel. The gap width is set by the following actions and is digitally displayed on the front panel.
A solenoid valve adjustsa piston that acts on the hydrostatic axial bearing on the supporting conical shaft or the crushing cone, thus setting the gap width. In case of overload a large diameter relief valve with pressure-dependent release effects a rapid lowering of the crushing cone. After the overload is cleared, the gap is set automatically to the preselected width.
The crushing tools are selected according to the required job. The combination of crushing shell and crushing tool is specially determined for each individual job, taking into account the material to be crushed, the feeding lump size and the desired final grain distribution. The crushing tools are made from highly wear and break resistant cast steel alloys. The possible utilization factor may range between 60 and 70%.
Fastening of the crushing tools
The crushing cone is fastened on the cone shaft by means of a thrust piece with shaft-nut. The crushing shell is connected to the crusher housing by means of a trapezoid clamping ring and is secured by means of bolts.