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Audited Supplier Drum reclaimers for coal handling from top state company of China
The drum reclaimers, traveling a horizontal runway, are designed to service parallel storage piles in bidirectional operation in an open stockpiles/yard type storage. The must have 3,500 tons per hour capacity to handle <300 mm sized coal.
The drum travels on rails on four undercarriages. The travel drive is realized using 8 drive units (2 per undercarriage). The undercarriages are equipped with rail tongs, one per rail, to secure the during out-of-operation wind, and with rail cleaner on both sides of the travel.
The drive unit consists of a gearbox with a servomotor controlled by a frequency converter. This servomotor operates in all the required ranges of travel speed, thus it is not necessary to use both independent motors for operation and transport traveling. The drive units are mounted vertically on the external traveling wheels of the undercarriages. Incremental sensors are used for the accurate positioning of the machine.
The spreading device provides a transverse oscillating movement, thereby it spreads a surface layer of material and shapes a profile of material on the stockyard to ensure uniform filling of buckets. A spreading device tilting angle can be manually adjusted depending on an actual state of material distribution on the stockyard. The machine is fitted with two spreading devices, one per side of the machine's travel direction.
The substructures functionally connected to the drum consist of a rail track, electric supply cables, water supply hoses for the sprinkler system, and end bumpers.
The major steel structure is of welded construction made of steel plate or sectional steel and is of sufficient strength, rigidity, and stability. High strength grip bolts shall be used for site assembly of the major large steel structure members to facilitate the erection and pick-up points / lifting eyes are provided for each structural member to facilitate transportation and handling operations. All structures and mechanisms are designed to bear the dynamic load, static load, horizontal load, and impact load. Besides the calculation for strength, rigidity, and fatigue, the calculation for the whole and partial stability shall be done as well. Each mechanism and component is designed to be of good performance and strength and also interchangeable to the extent feasible. Those wearing parts will be designed to be easily checked and replaced.
Specification of drum reclaimer
| description | parameter | unit |
| material | Coal, ore, etc | |
| density | 0.8~2.3 | t/m3 |
| granularity | <70 | mm |
| moisture | <2 | % |
| reclaiming capacity | 500~4000 | t/h |
| rail span | 20~50 | m |
NOTICES
The customer shall provide the following information when placing order
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