#crane selection

Actually,crane selection is  according to the actual circumstances of the crane load and the use of specific circumstances to choose the suitable crane.So how do the customers choose the crane that they need?

Crane selection including the crane type selection, crane model selection and crane number determine.

1, the crane type selection

Crane type selection should consider the following options:

structure of the span, height, weight and hoisting of quantities of components, etc.;

construction site conditions;

this enterprise and hoisting equipment present situation of the region;

the time limit for a project requirements;

construction cost requirements.

Under normal circumstances, hoisting a large amount of ordinary single assembly structure should use crawler cranes, because the requirements of crawler cranes are not too high on the road, they are amplitude, convenient driving and load driving. Truck mounted crane destructive small on the road , marched lifting place quickly and easily, suitable choice for lifting in the urban areas or small quantities mounting structure.

Hoisting located in remote areas, or distance, or poor road conditions, the selection of single leg to pull rod or herringbone pull rod, mast cranes and other simple lifting machinery can often be an early start to meet the schedule requirements and costs low.

Multilayer fabricated structure which the height of the upper member is mounted high, often used in large lifting capacity cranes tower cranes or general (rail or fixed). For high-rise or super high-rise prefabricated structure, we need to choose within or attached tower crane climbing tower crane. Climb inside the tower cranes’ advantage is light weight, along with the increase of building height not meet high tower,, machinery and more installed in the central structure, you need lifting member from near the tower, which can use a smaller size of the crane; its shortcomings the construction loads (including tower crane weight, wind loads, weight lifting member, etc.) need to structure the burden of construction, after the end of the project, an additional set of mechanical equipment for demolition, vertical tower site member shall climb the tower crane demolished or after the meeting loading. Attached tower crane mounted on the outside of buildings, in the above-mentioned disadvantages can be avoided climbing tower cranes, but many lifting operations must be installed far away from the tower components, a large range of work, choose a larger size crane requirements, simultaneously occupy more space, you need to install with the increase of the building attached to the rod, and the crane tower connected also more complex.

2, the crane model selection

Select crane principle is: three operating parameters of the selected crane, that is, the weight of Q, and lifting height H working range (radius of gyration) R lifting structure must meet the requirements.