customer information
The Pakistani client company is a steel mill, the largest and fastest re-rolling mill in Pakistan, and the only steel mill in Pakistan that can produce grade 60 and grade 70 steel bars. Its products are mainly used in high-rise buildings, large commercial buildings and other projects. The steel mill company has branches in Karachi, Lahore, Peshawar, Quetta and other cities.
Cooperation history
In 2013, Pakistani customers sent their first inquiry about bridge cranes on our website.
The first order was in 2016, a Pakistani customer purchased 9 sets of bridge cranes and electromagnets from us. The cooperation of two 20-ton double-girder bridge cranes has also achieved complete success.
2 sets of 20-ton double-girder bridge cranes
Crane model and working condition analysis
The customer's two bridge cranes will be installed in the scrap iron factory for grabbing/absorbing scrap iron, so the QN type dual-purpose bridge crane is selected.
The full name of the QN bridge crane is a dual-purpose bridge crane, which can be equipped with magnets, grabs or hooks for different load handling.
That is, on the basis of the QD double-girder bridge crane, the installation position of the cable reel is reserved on the trolley, which is used to supply power to the grab (generally an electro-hydraulic grab) or electromagnet. All electrical components are also relatively larger than the general QD bridge crane, and the power of the hydraulic grab and electromagnet must also be considered.
The other parts of the QN bridge crane are the same as those of the QD type. The lower part is a hook, which can be hung with an electromagnet or a hydraulic grab bucket at any time. The left side of the picture below is for reference.
Overhead Cranes with Grapples, Magnetic, and Magnetic Beam Diffusers
Comparison of QN bridge crane with QZ grab crane and QC electromagnetic crane
This qn type bridge crane is more flexible to use. It can lift general heavy objects, and can also be equipped with grab buckets or electromagnets to lift scrap iron, etc.
Different from QZ grab bridge crane, this crane is equipped with grab by default without hook. The wire rope drawn from the drum is directly connected with the pulley of the grab bucket, which is used to grab broken items, such as sand, coal, etc. Its structure is shown in the lower right figure.
Similarly, QC electromagnetic bridge cranes are equipped with electromagnets instead of hooks by default, and QL electromagnetic beam bridge cranes are equipped with electromagnetic spreaders, as shown in the left picture.
Confirmation of parameters of 20 ton double girder bridge crane
QN series 20 tons bridge crane 1
Rated lifting capacity of bridge crane: 20t
Bridge crane span: 12M
Overhead crane working level: A6,
Lifting height of bridge crane: 20m
Base distance of bridge crane: 5400mm
Gauge of bridge crane trolley: 3300mm
Maximum wheel pressure of bridge crane: 156KN
Crane left and right limit position: 1090/1450mm
Total weight of bridge crane: 22.4t
Overhead crane Crane power: 64KW
QN series 20 tons bridge crane 2
Rated lifting capacity of bridge crane: 20t
Bridge crane span: 21.5M
Overhead crane working class: A6,
Lifting height of bridge crane: 20m
Base distance of bridge crane: 5400mm
Gauge of bridge crane trolley: 3300mm
Maximum wheel pressure of bridge crane: 176KN
Crane left and right limit: 1090/1450mm
Total weight of bridge crane: 30.1t
Overhead crane Crane power: 64KW
Regarding the installation of a 20 ton bridge crane.
It was promised to be installed by our engineers, and the installation fee will be paid in cash. However, due to the epidemic, the installation of a 20-ton crane by our team is no longer a proper solution. The customer also proposed that they do the installation themselves, and we will install and construct step by step.
Afterwards, we provided the customer with electrical diagrams and installation step diagrams to help Pakistani customers understand the installation difficulties. The difficulty of the customer's crane lies in the positioning of the crane motor and reducer. As we have installed similar projects in Pakistan, our client successfully installed 20 tons bridge crane after negotiating with the local project.
If you have any demand for bridge cranes, or want to know more about 20 tons double girder bridge cranes for sale in Pakistan, please feel free to leave a message below or email us.
