Topic: 10 ton double girder overhead crane installation in Bangladesh
10 ton double girder overhead crane installation in Bangladesh for steel coil plant. Dongqi Group finished 10 ton double girder overhead crane installation in Chittagong, Bangladesh for our customer. Let’s learn the crane installation process in Bangladesh.
Bangladesh Customer Introduction
Our client is in the steel coil area. From the 2013 years on, they bought 3 sets double girder cranes from us and this is the fourth one. Its plant notably is the only European plant of its kind in the country, supplied by SMS DEMAG Germany, a world leader in this sector. The Complex which is built on a 10 acre site, houses pickling line, 6 Hi CVC cold rolling Mill Slitting and rewinding line with an annual capacity of 250000 MT. Commission in 18 months under direct supervision and technical assistance of SMS DEMAG Germany, the result is a continuous and efficient supply of flawless quality product unrivalled by any other in the industry, thus enabling us to be the most reliable supplier of cold rolled sheet in the region.
10 Ton Double Girder Overhead Crane Installation Process
When the first day we arrived the Chittagong, Bangladesh, We discussed the installation plan with them as below:
Link the main girder—–Fix the maintenance platform—Fix one piece end carriages—Fix the two main girder—-Fix the second end carriages—–Fix the end carriages & main girder well—-Fix the lifting trolley—-Connect the electrics—-load testing/commission
Linked the main girder
Our engineer guide the workers to link the main girder by high strength bolts firstly. After then, weld it again. As there is the trolley rail mount on the main girder, after the connection, we have to clear the rail also.
10 Ton Double Girder Overhead Crane Main Girders Weld
Fixed the maintenance platform
As for our general design, there will be one side maintenance platform on the main girder; So after linked the main girder, our engineer asked the workers to fix the maintenance platform.
10 Ton Double Girder Overhead Crane Maintenance Platform
Fixed one side end carriage
Then we asked our client to rent one mobile crane. With the mobile crane help, we lift up and fix one side end carriages firstly. Then we dispatched two person to the upsides with safety belts and ask them to hold the end carriages by wire rope.
10 Ton Crane End Carriage Installation
Fixed the two main girders
After one side end carriage fixed well, our engineer asked to lift the two main girder up one by one; Connect the end carriages and main girder by high strength bolts.
10 Ton Crane Main Girder Installation
Fixed the second end carriage & fixed the end carriages and main girder well
After then, our engineer asked to link the second end carriages. Fix the other side end carriages and main girder by high strength again.
Fix the 10 ton crane trolley
Then our engineer asked the mobile crane to lift the lifting trolley up. Meanwhile, he asked two workers to fix the trolley by wire rope to assort the lifting trolley loading.
10 Ton Crane Trolley Installation
Connect the electrics
After all the mechanical job fixed well, our engineer start the crane electrics connections with the help of our electrics drawings.
10 Ton Double Girder Overhead Crane Load Testing
After then, our engineer asked to connect the power and we start the load testing and commissioning.As per our design standard, our load testing is divided into two parts:
Static testing, this is the 1.25 times testing. We asked our client to prepare the 12.5 tons cargo and lift it 3 meters up from the ground.
Dynamic testing, this is the 1.1 times testing; We asked our client to prepare the 11 tons cargo; We asked our client to lift the cargo 5 meters up from the ground; After then, our engineer test the trolley cross traveling and crane long traveling also.
Till then, all the cranes installations and commissioning has been finished.