With thyssenkrupp apron feeders, material is transported on rugged steel pans bolted to two strands of heavy-duty tractor chains whose joints are lifetime-lubricated. These are pulled all around by sprockets and slide on heavy-duty rollers that are also lifetime-lubricated. These are bolted to the apron feeder frame, which accommodates the drive station and the tensioning station at its end faces. Between the two chain strands, sliding rails are arranged on which the pans with corresponding sliding shoes can be supported in the event of potentially occurring load peaks in order to prevent deflection. No additional lubrication is required for this.
The drive system of apron feeders is of special importance: It must be able to start the conveyor under full load and ensure a uniform and controlled feeding of the downstream equipment by means of a continuous adjustment of the conveying speed.
For this reason, the thyssenkrupp apron feeders are driven either by hydraulic or electric motors. For electric drives, the conveying speed is continuously controlled via a frequency converter.
The pans of thyssenkrupp apron feeders are cast or welded depending on the application. The thickness of the pans can be adapted to the specific requirements of the application.
Depending on the application and the arrangement of the apron feeder, the pans can be equipped with a transport bar. This ensures safe transport and avoids relative movement between material and pan, thus enabling low-wear operation.
Protection in the feeding area
thyssenkrupp apron feeders can be equipped with additional rollers and slide rails in the feeding area to prevent deformation of the pans in the event of high impact forces. The slide rails made of special steel again do not require additional lubrication. As additional protection for the support structure, the apron feeders can be provided with an impact table with heavy-duty shock absorbers.
It goes without saying that thyssenkrupp apron feeders are equipped with all the necessary safety devices. These are essentially easily removable plates and grids as mesh protection on rotating and moving parts. The operation of the conveyor is monitored with a speed sensor.