The Comparison of Portal Scraper Reclaimer and Boom Scraper Reclaimer

The portal scraper reclaimer and boom scraper reclaimer are the main types. The differences are as follows:
1. The portal reclaimer has reasonable structure. The partial weight of portal frame and scrapper reclaimer is supported by the wall(blocking materials). In this way, the stress state under the central cylinder, and the running of the portal scraper could operate smoothly. And the boom scraper reclaimer's load could be transmitted to the central cylinder. In this way, the design and manufacturing difficulty is large and the stability of the equipment is bad.
2. The portal reclaimer has compact structure, and there is no need to design the balance weight. The space occupied under the portal reclaimer is small. The boom reclaimer should be designed with large balance weight.
3. The portal reclaimer need the circle track in the wall(blocking materials), and the related cost of setting circle track. The balance weight load of the boom scraper reclaimer is central under the central cylinder, which makes the cost of building central cylinder high.  
4. The slewing bearing of portal reclaimer only bears partial load and it is the small model without the outer gear ring. While the boom reclaimer must bear all the load, the model of the slewing bearing is large with outer gear ring and high costs.
In general, the stacker reclaimer is used with other equipment such as apron feeder, belt conveyor, screw conveyor and pipe conveyor to convey the materials.