Difference between kinds of crane equipments
Overhead Crane
Concept
This crane is Horizontal placed in workshop, storage, on top of steel support. It used to lift object or machine.
Working Application
workshop, storage, yard for unloading& loading.
Loading capacity
Rated capacity from 1 ton to 500 tons.
Advantage
Heavy lifting capacity, high effective.
Disadvantage
It need supporting structure in working area, cost is higher, working area is limited.
Structure
Crane is traveling on rail, rail is placed on concrete or steel beam.
Gantry Crane
Concept
Its strucuture is similar as door frame, under the main beam, there are legs to support beam, and travel on rail with wheels on ground. Beam can extend cantilever beyond legs.
Working Application
storage, station, port and so on, outdoor yard.
Loading capacity
Rated capacity from 1ton to 900Ton, special some long, large and cumbersome objects.
Advantage
High space utilization, large range of operation, adaptation of wide, strong commonality, widely used in port yard
Structure
gantry crane have own legs and wheel, travel on rail, rail is fixed on ground.
Crawler Crane
Concept
This crane is used in high-rise construction, it can travel by its crawler, its jib is very flexible when working.
Working Application
used in outdoor field and construction site
Loading capacity
15~1800Ton
Advantage
Contact ground sufficiently, climbing ability and with good performance, flexible and convenient operating performance is the highest, the structure is simple, cheaper prices, 25% cheaper than truck crane
Disadvantage
Slow speed, damage ground, working time and evacuateing is long.
Structure
It should transport equipment, on-site installation and require larger installation space and lifting equipment installation together. Crawler bottom, it can travel with loading.
Mobile Truck Crane
Concept
It is a truck who equipped a jib crane on trailer. Its jib is main lifting tool.
Working Application
Large construction units or temporary liquidity dispersed site and open handling operation.
Loading capacity
3~200Ton
Advantage
Fast traveling speed, good performance
Disadvantage
it must have leg when work, can’t travel when loading, not suitable for work in soft or muddy field
Structure
truck base, two cabins one for crane operation, one for travel and slewing.
Tyre Crane
Concept
Similer as crawler crane, but its traveling mechanical is tyre instead of crawler.
Working Application
Relatively fixed construction site, especially for narrow construction site
Loading capacity
5~80Ton
Advantage
wide wheel distance, stability, short body, small radius, 360 degrees of work.
Disadvantage
slow speed, damage ground, complex structure, more 15% expensive than truck crane.
Structure
Speical base, cabin on slewing plate, controlling adopts special chassis, suspension, can be all-wheel drive and steering, off-road driving.
