Brief Introduction: 
The QZ type grab bridge crane is a kind of heavy duty overhead crane to grab and load coal, ash, coal gangue and other bulk goods and materials. 
This grab bridge crane is widely used in freight port, river wharf, power plants, concrete mixing station, industrial and mining enterprises. 
The grab bridge crane consists of Main Girder, End Carriage, Lifting Trolley, grab bucket and Electrical Parts. Generally, the power supply System for trolley and crane are festoon system and Bus Bar system. 
 
Features: 
1. Heavy Duty and High Efficient
2. Suitable for any environment ( High Temperature, Explosion Proof and so on)
3. Long Life Span: 30-50years. 
4. Easy for Installation and maintenance. 
5. Reliable structure
 
Lifting Trolley: 
Lifting Trolley is the most important mechanism of Crane. It includes lifting mechanism and cross traveling mechanism. The auxiliary lifting mechanism are opional according to different demands. Generally, the traveling mechanism are 1/2 drive. 
The Lifting Speed from 1m/min to 40m/min and traveling speed from 10m/min to 50m/min for different usage and demands. 
 
The trolley are assembled with motor, reducer, brake, trolley frame, drum, hook, pulley, wire rope, rain cover, wheel, bearing, buffer and other parts. 
 
Following notes: 
1. Double Brake for working class at A6 and A7 lifting Mechanism. 
2. Wire rope safety factor: 6 times
3. Double Limit Switch for lifting mechanism
4. Forge hook
5. Casting Wheel
6. Overload Limiter
 
Electric Parts: 
Electric Parts are consists by Cabin, Control Box, Control Panel and Power Supply System. The electric parts we use Chinese top brand: Chint, and the Siemens, Schneider, ABB and Yaskawa are optional brand. 
The speed are controlled by resistor and Inverter to realize single speed or multispeed. The Inverter control (VVVF) are suitable for precise operation, such as: Hydro Station rotor maintenance. 
 
Generally, the Trolley use festoon system for power supply, the crane use Bus Bar system for power supply. And the power source could customize according to your demands. 
 
The full set electrical drawing will offer for confirmation and maintenance. 
 
The safety factor should be very high for the electric parts, the QD type double girder overhead crane with full set safety device.  
 
Packing 
1. Main beam and end beam packed by plastic cloth and plastic film. To protect the crane from scraped, chipped, the sea erosion the painting. 
2. Other small parts will be packed by wooden case, and every small parts will be marked. 

 

Overhead Crane Safety Features

1. Overload protection device

2. Top quality long time bearing polyurethane materials buffer

3. Crane traveling limit switch

4. Voltage lower protection function

5. Emergency stop system

6. Lifting height limit device

Looking forward to receive your enquiry with the below details information: 

1. Lifting capacity
2. Span ( rail centre to centre )

3. The required lifting height ( from hook to the ground ) 

4. Crane travelling length

5. What will be lifted by the crane

6. The crane and hoist movement speed (m/min)

7. The rail length and the height. 

8. Single speed or double speed for lifting and travelling? 

9. Driver cabine control or pendant control? 

10. How many hours work per day? 

11. Power source: 380v, 50Hz, 3phase or others? 
 

After-sale Service

1. One year warranty for whole machines from crane running

2. Providing free spare parts

3. Low charge for continue maintenance when warranty is expired

4. Exclusive engineer support at any time

5. We can provide free training to end-users