Top quality MG double girder truss structure crane
MG(A) type double girder truss structure crane with hook is applied outside warehouse or railway sideways to do common lifting and unloading works,
This kind of crane is composed of bridge, support legs, crane traveling organ, trolley, electric equipment, strong lifting winch, the frame adopts truss-type welding mechanism, this result to small windward side. (The wind-pressure is less than 125PA). Crane traveling mechanisms are operated in the driver cabin or remote control.
For outside working yard, the gantry crane is the best choice. The MG doubel girder gantry crane is a heavy dutry gantry crane. It is mainly for heavy duty working designing, such as 24 hours logisitc yard, steel factory, fabrication yard, mining, port, railway station etc. The gantry crane can be equipped with hook, grab or magnet, or combination of the 3 devices.
Hoist:
The hoist is made by heavy steel frame, where hoist motor, hydraulic brake and heavy gearbox. The working duty could be designed to M5, M6 or M7.
Safety device:
- Overload protection
- Zero-phase protection
- Emergy stop protection
- LT, CT limit switch
- Buffer
- Rail grab
Features
Designed for indoor or outdoor use,heavy duty works.
Equipped with high quality gearbox;SEW/ABB can be as optional according clients special requirement.
Safety limit switches for stoppers will be provided to prevent over traveling in all motions
Main elcetrical devices are Siemens or Schneider brand
Power supply of Crane through Cable drum/Energetic Chain
Controlled via push button pendant/Radio remote/Cabin, separately or any combination.
Tailored based on client's detailed requirement.
Technical Parameter
| Capacity |
Up to 300t |
| Span |
Up to 120m |
| Lift height |
Up to 30m |
| Lifting Speed |
2.5m/min ~ 8m/min |
| Cross Travel Speed |
16m/min ~ 35m/min |
| Long Travel Speed |
80m/min |
| Work Duty |
A5, A6 |
| Controlled by |
Cabinet |
| Power Supply |
380v/400v/415v/460v
|
Components of Gantry Crane:
1. Main girder
2. Saddle
3. Legs
4. Cab and ladder installation
5. Crane traveling mechanism
6. Electric wire rope hoist
7. Operate handle
8. Floor girder
9. Track and conductive device
1. Main Girder
Be welded of steel plates with honeycomb hole, connected by high-strength precision bolt.
There are sliding rail for trolley to travel upper the girder which is fixed on outrigger by high-tension precision bolt.
2. Outrigger
A. Consist of rigid outrigger and flexible outrigger, all connection points are connected by high-tension bolt
B. The ladder is used by operator to enter into cab or arriving at winch
C. When the span>30m, there need a flexible leg aiming at reducing the lateral thrust the trolley has to the rail when the girder load objects
3. Travelling mechanism
A. The driving gear box supplys power to realize the crane's travelling.
B. What the difference between driving gear box and passive wheel box is that passive wheel box lacks transmission structure such as dynamo,
4 Reducer and a pair of exposed gear4. Trolley with hoist
A. Trolley frame welded of steel plate is the loading and travelling mechanism of trolley with hoisting
B. Winch is the lifting mechanism of trolley...When it works, wire rope affects the pulley as rising and falling movement,
Which makes suspended objects lifting and lowering
5. Cab
A. Glass window through which one can watch overall working condition is installed in the front and two sides of the cab
B. Electric cabinet as a group of independent cabinet, fixed outside of cab is connected by control cable and linkage station which is set up in the cab
Notice: As MG is customized, please confirm following information.
1. Lifting capacity.
2. Lifting height. (hook center to ground)
3. Power supply: Voltage.
4. Working condition: Which material to lift? Temprature?
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