Power Company Bulk Cargo Handling Equipment Limestone Chain Bucket Unloader

power company limestone chain bucket unloader ​

1. introduction

The tipping bucket mechanism is a double row, single drive chain bucket mechanism, and the chain is a military tank chain with a pitch of 203mm. The bucket body is made of wear-resistant material nm400, and the original steel quality inspection report shall be provided with the goods. The back plate of the chain bucket mechanism is installed, and the bottom part is equipped with a scraper cleaning device. The scraper is 30mm thick and 800mm wide and is connected with the "s" plates on both sides. Through the rapid operation of the cart, the cart can be cleaned and the knife-edge can be protected from scratching the cart. The cleaning rate is greater than 99%. Ensure that the remaining quantity in the trunk is less than 1 ton. The lifting height of the chain bucket is designed according to the current 60t/70t standard wagon, and the static position will not affect the passage of the whole train wagon.

Luffing winch mechanism

The composition and arrangement of the luffing winch mechanism. The winch is located in the middle. Video monitoring to ensure safety and reliability, and the selection and calculation of parts comply with the relevant clauses in GB/t3811.

The luffing mechanism is composed of a motor, disc or wheel brake, coupling, hard tooth reducer, drum device, upper pulley device, etc. The structure type of single motor, single reducer, single drum, and double brakes is adopted.

There are limits for both hoisting and lowering at the extreme position.

The drum is made of Q345B, welded and formed, and has a short shaft structure. When the drum is welded in sections, the circumferential butt weld shall be subject to 100% ultrasonic flaw detection. Heat treatment shall be conducted after welding to eliminate stress. NDT for stub shaft.

There should be at least 2.5 turns of steel wire rope remaining on the drum when the chain bucket is lowered to the limited position. The clamp for the steel wire rope is mounted on the side of the drum not less than four.

The fixed pulley device adopts the binding pulley, which is placed on the upper plane of the trolley frame, keeping maintenance space. The ratio of wire rope diameter to the pulley and drum rope groove diameter shall meet the requirements of the crane design code.

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