wagon unloading chain bucket unloader to unload coal for coal fired
power company
1. introduction
The fully enclosed box structure is adopted. The steel structure is
made of Q345B. The traveling structure adopts a suit type three in
one reducer, four sets of trolley type, and eight traveling wheels.
The wheel with a diameter of 630mm with VFD driving system for
traveling. One VFD controls four sets of motors to travel stably.
The chain bucket mechanism is provided with a locking device and
interlock protection device.
Locking device: when the bucket elevator rises to the limited
position, the locking device can be automatically activated, and
the weight of the tipping mechanism can be borne by the locking
device through the hydraulic push rod mechanism, which can prevent
casualties and equipment damage accidents caused by the sliding of
the bucket lifting mechanism due to brake failure, and also extend
the service life of the steel wire rope.
Interlocking protection device: when the bucket elevator rises to
the limit position, the traffic light will automatically turn
green, which can facilitate the train driver to identify whether
the unloader is working and whether it can enter the station
The chain bucket limestone unloader also has other interlocking
protection, such as the interlocking between the rail clamp and the
traveling mechanism, the interlocking between the belt conveyor and
the tipper mechanism, the interlocking between the door of the
operating room and the main power supply (i.e. the door cannot be
closed, and the main power supply cannot be supplied), which can
ensure that the chain elevator limestone unloader works in a safe
environment state all year round and improve the operation rate.
The bottom of the chain bucket is equipped with a large scraper
chain protection device, which can not only thoroughly clean the
materials but also never damage the wagon. When the chain bucket is
working, the scraper device plays the role of scraping the
materials. The scraper material is 16Mn, so as to reduce the
surplus of materials as much as possible and reduce the labor
intensity of workers. The discharging rate is greater than 99% and
the remaining material is less than 1 ton.
The chain bucket teeth are made of material 60Si2Mn alloy
wear-resistant plate, which increases the service life by 3-4 times
compared with the ordinary wear-resistant plate.
The electrical components for the chain bucket unloader are all
Siemens, ABB or Schneider products. Thermal insulation materials
and air conditioners (Brand: Gree) are used in the operator cab.
Tempered glass is used in the operation room, and an electric wiper
is worn, The operator cab environment is comfortable.
2. Specification of chain bucket limestone unloader
Work duty:3 shift heavy-duty,365days per year
Unloading capacity: 350t/h
Rail distance: 6000mm
Power supply: cable reel(power), less than 200
Power: 380-400V
Frequency: 50Hz
Unloading rate: ≥95%
Consumption power: 145KW
3. Other parameters
3.1 Traveling mechansim:8 wheels and 4 drivers.
Motor model: YX3-132
power: 7.5KW×4
speed: 1450r/min
power of VFD: heavy-duty 30KW (Seimens/ABB)
gear reducer model: Rigid tooth reducer series(Flender/SEW)
traveling speed: 1.9~20m/min(VFD)
Dia of wheel: Φ630mm
No of wheels: 8
Max wheel pressure: 15t
Rail distance: 6000mm
3.2. bucket elevator
Motor model: YZ225M-
power: 30KW×2台
Rigid tooth reducer model: ZQA500-3/4-15.75(SEW/Flender)
Ratio: 15.75
speed(chain speed): 95.7m/min
volume of bucket: 43L
width of bucket: 1100mm
type of chain: two-row military tank chain
pitch T203mm
work duty: heavy duty
3.3 Luffing winch
Motor model: YZ225M-8
power: 22KW
speed: 750r/min
gear reducer type: ZQA650-48.57-8
ratio: 48.57
winch speed: V=2.37m/min
3.4, Belt conveyor mounted on cantilever
Belt conveyor: one way to discharge,
Transmission device: YDΦ630-1000-2.5
power: 15KW
bend pulley: Φ500
speed: V=3.15m/s
width: B=1000mm
conveying capacity: Q=800t/h
belt conveyor cleaner: the blade is made of polyurethane
table of main techanical date
| description | parameter | unit |
| material | limestone, coal | |
| density | 0.8~2.5 | t/m3 |
| granularity | <100 | mm |
| moisture | <15 | % |
| unloading capacity | ~350 | t/h |
| travel speed | 20 | m/min |
| rail span | 6 | m |
