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QD Type High Quality Double Girder Overhead Crane

QD Type High Quality Double Girder Overhead Crane

 QD type electric double beam bridge crane is composed by the bridge frame, crab, trolley travelling mechanism, electrical equipment. This crane is suitable for the workshops, good yards and warehouses of the departments of stations, ports, industrial and mining enterprises, lifting, transporting, loading and unloading all kinds of materials in a fixed span. Depending on the different using frequency, it can be divided into A5, A6,A7 class. The maximum capacity can be up to 450 ton




1. Design: Compact dimensions, low weight, easy to operate and easy to maintain, modular
design with direct fits between components
2. Motors: Crane uses sturdy cylindrical/ conical rotor pole-changing motors with elegant cont
inuous cast aluminum sections, integrated safety brakes insulation class F, IP54 protection
3. Gear Boxes: Precision flat helical spur gear units in light alloy housings with case-hardened
gears, high-grade surface treatment and permanent oil/grease lubrication
4. Brakes: Single/ Dual-disc electromagnetic DC brakes featuring automatic braking on power
failure. Environmentally sound brake linings designed for approx. 1 million braking operations
allow long maintenance intervals
5. Electrical Panel: Modular design, covering a very wide operating range. The systems are
designed for ease of installation & maintenance and reliable operation, with fuse-less circuitry,
ducted wiring and non-screwed terminals. Each drive group is equipped with a motor overload
protection device to provide effective protection against inadmissible overloading
6. Painting: Every component & part is thoroughly scrubbed & painted with two coats of primer
before assembly & two coats of synthetic enamel after testing
7. Limit Switches : To prevent over hoisting & over lowering of hook
8. Push Button Stations : Extra light, handy, easy to operate, aluminum, fabricated from ext
ruded section.
9. Soft Starts : Electric / Electronic soft start modules electrically coupled to the long travel
drives to achieve jerk free, cushioned & smooth starts
10. Maintenance Platform With Hand Railing : Easy, simple and safe maintenance of the
 crane extended partially or totally along the girder



Type Double Girder Overhead Crane 10 Ton Crane Manufacturer
Capacity (t) 16000 20000 25000 32000 40000 50000
Lifting Height (m) 6/9/12/15/18
Lifting Speed (m/min) 4/0.6 4/0.6 3.3/0.8 3.3/0.8 0~4 0~3
Lifting Motor (kw) 16/2.6 16/2.6 20/5 20/5 38 38
Traveling Speed
5/20 5/20 5/20 5/20 5/20 5/20
Traveling Motor (kw) 0.55*2 0.55*2 0.75*2 1.1*2 1.5*2 1.5*2
Wire Rope Breaking 
Insulation Duty F
Control Panel IP65
Lifting 2M / M5 1Am / M4 3M / M6 2M / M5 1Am / M4 2M / M5
Traveling 2M / M5 2M / M5 2M /M5 2M / M5 2M / M5 2M / M5
H 720 720 950 950 950 950
C 520 520 450 450 960 990
Smin(m) 1.4/1.7/2/2.4/2.7 1.7/2/2.4/2.7/3.1



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