Wind Resistant 3T-32T Electric Hoist Gantry Crane For Construction

Electric Hoist Single Girder Gantry Crane With Hook For Construction Industry

Description:

Single girder gantry crane has the features of simple structure, easy installation, light weight, good wind resistance. The Main girder is mostly bias rail box type structure.The electric hoist portal type hoist crane and CD, MD and so on many kinds of model's electric hoist necessary uses, are one kind the middle and small scale hoist crane which has the axle to move, it is suitable lifting capacity 3t~32t, is suitable the span is 12~35 meters, the working conditions temperature - 20℃ to +40℃.

Safety features:

Weight overload protection device, Top quality long time bearing polyurethane materials buffer, Crane traveling limit switch, Voltage lower protection function, Emergency stop system, current overload protection system and so on!

Technical Specification: 

1. Lifting Mechanism
- Single Girder Electric Hoist
- MDG L type: Side mounted hoist with crab
2. Driven Bogie and Ground End Beam
- Forged Flanged wheel
- Rigid welded box type beam
- compact layout

3. Main Grider and Legs
- Main girder and 4 legs are welded box type
- Material: carbon steel with high quality of Q235B or Q355B
- The main girder is connected by strength bolts.
- Weld joint tested by X ray or ultrasonic examination;
- Designed Deflection≤1/800 of span
4. Control
- Cabin control
- Pendant control
- Wireless control
5. Electrical Parts
- Conductor power supply
- All crane motion are independent and can be run simultaneously.
- Protection degree IP55
- The components are positioned in a maintenance friendly way, and the whole layout provides with good protection
- Festoon cables are suspended on cable saddles, fixed to cable trolleys, running in a galvanized C-track.
6. Painting
- corrosion protection through rust removal by mechanical shot blasting Sa2.5
- First layer of coating epoxy 30 microns
- Second layer of coating epoxy 30 microns
- Third Layer of coating of polyurethane 40 microns
- Average thickness: about 100 microns
- Color: Red or orange as per requirements

How to choose:

1. Selection of gantry crane
Comply with the relevant regulations of GB/T14406-1993 and GB5905-86 for general gantry cranes.
Under normal circumstances, the lifting capacity is less than 50t, the span is less than 35m, and there are no special requirements for use, the single main beam type should be selected. If the width of the gantry leg is required to be large, the working speed is high, or the heavy and long pieces are often lifted, the double-girder gantry crane should be selected.

2. Span and cantilever length
The span of the gantry crane is an important factor affecting the quality of the crane itself. In the selection, the span should be minimized under the premise of meeting the equipment use conditions and meeting the span series standards.

3. The principle of determining the wheelbase
(a) It can meet the stability requirements of the gantry along the direction of the crane track;
(b) The overall dimensions of the goods should be able to smoothly pass through the flat steel frame of the outriggers;
(c) Note that the wheelbase B is proportional to the span S. Generally, the wheelbase B=(1/4-1/6)S.

4. The gantry crane spacing size is determined
During work, there should be a certain amount of space between the external dimensions of the gantry crane and the passage of goods and transport vehicles in the yard to facilitate loading and unloading operations. When loading and unloading within the span, the general transport vehicle should keep a distance of more than 0.7m from the door leg. When the spreader is not working, there should be a distance of more than 0.5m from the transport vehicle, and when the goods pass through the door legs, there should be a distance of more than 0.5m.