About Company: Henan Zhonggong Group Crane Technology Co., Ltd

1. With more than 30 years development, Henan Zhonggong Group has 5 holding subsidiaries, covers an area of 240,000 square meters and 100,000 square meters construction area, possesses nearly 1000 sets various producing equipements, is a member unit of Bridge Crane branch of "China Heavy Machinery Industry Association". now we have 1200 staff of which more than 160 professional engineers and management colleagues, company has passed ISO9001, ISO14001 and OHSAS18001. Brand "YUZHONG" products have been granted titles such as "Top 10 brand Well-Known Cranes in China", "Well-Known Commodity in Henan Province" and "Henan Famous Trademark".

2. Group R&D Center has been recognized as the engineering technology research center of cranes for application at Xinxiang nuclear power station and serves as the only China R&D in the nuclear area. company can supply electrical hoist, single girder crane, double girder crane, gantry crane, overhead crane, grab, explosion-proofinsulation crane, hydraulic hoist, container handling crane, ship crane, metallurgic crane, quenched crane, elecromagnetic series crane and special crane for nulear power station. 

QD Type Double Girder Overhead Crane 
 
Brief Introduction:
The QD type Double girder Overhead Crane is a kinds of heavy duty overhead crane to lift and transfer materials and goods.
The Double Girder Overhead Crane are widely used for Hydro Power Station, Power Plant, Steel Mills, Paper Mill, Storage and kinds Factory Workshop. 

The Double Girder Overhead Crane consists of Main Girder, End Carriage, Lifting Trolley and Electrical Parts. Generally, the power supply System for trolley and crane are festoon system and Bus Bar system.
 
Basic parameter:
1. Capacity: 5t-500t
2. Span: 7.5m-45m 
3. Working Class: A3-A8 (FEM 1am-5m)
4. Speed: 17.7-97.2 m/min 
5. Control Method: Pendent, Remote and Cabin Control
5. Power Source and Painting Color as your demands
6. According to your specific usage, specific model and design will be offered.
 
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
 
Further more, according to different usage, industry and demands, the QD type Double Girder Overhead  Crane have following improved model:
1. QZ Grab Double Girder Overhead Crane
2. QC Magnetic Double Girder Overhead Crane
3. QDY and YZ Foundry and Casting Overhead Crane
4. QB Explosion proof Overhead Crane
5. QE Double Trolley and Double Girder Overhead Crane
6. QL Suspended Beam Double Girder Overhead Crane
7. QN and QS Multipurpose Double Girder Overhead Crane (Hook, Magnet and Grab)
 
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.

There are Cabin, Remote and Pendent Handle control methods for the QD type Double Girder Overhead Crane, or any two kinds control methods.

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. 
 
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: 
 About product
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