What are the characteristics common crane?

       hoist equipment  is a kind of vertical lift and managed to complete the horizontal movement of machinery in industrial and civil engineering as a major construction machinery and widely used. Lifting a wide range of commonly used in the construction of mobile cranes, including: tower cranes, truck-mounted cranes, truck cranes, crawler cranes, as well as basic lifting - winches and vertical high-rise building transportation construction  lift hoist   Common characteristics and scope of the crane below:
      Tower crane
      1 Advantages:
   
 (A) has a multi-purpose machine models (such as mobile, fixed, attached type, etc.), can adapt to the different needs of the construction;
 
 (2) attached to the rear rises up to 100m above the height;
 
 (3) the effective operating range of up to 80% of full range;
 
 (4) that can be loaded walk in place.
 
 (5) for the motor power, reliability, maintainability is good, low running costs.
 
 2 Cons:
 
 (A) a huge body, in addition to light, the need disintegrated, disassembly time-consuming, laborious;
 
 (2) transfer fee, the use of short uneconomical;
 
 (3) high-altitude operations, high security requirements;
 
 (4) to build a foundation.
 
 3 Scope
 
 (A) senior, super senior civil construction.
 
 (2) heavy industrial plant construction, such as power plant construction and equipment hoisting Lord, blast furnace hoisting equipment.
 
 (3) internal climbing for a narrow construction site environment.
 
 Truck crane
 
 Benefits:
 
 (1) using general or special vehicle chassis, according to automotive original speed, flexibility, rapid transfer;
 
 (2) using pressure liquid transmission is steady, manipulation effort, lifting speed, high efficiency;
 
 (3) for the folding boom, performance and flexible, fast transfer.
 
 Disadvantages:
 
 (A) must be used when lifting the legs, you can not load run;
 
 (2) turning radius, off-road performance is poor;
 
 (3) box type boom since the major impact from the weight;
 
 (4) high maintenance requirements.
 
 Scope:
 
 For greater mobility or temporary construction units dispersed sites and open loading and unloading operations
 
 Tire  lift hoist 
 
 Benefits:
 
 (1) Truck driving speed is lower than, higher than the crawler, small turning radius, off-road performance, uphill capacity by 17% to 20%;
 
 (2) general use of legs hanging heavy legs on flat ground may or may not be surrounded by the job, but also hoists slow walking;
 
 (3) stability is good.
 
 Disadvantages:
 
 (1) Mobility worse than a car type, inconvenience, often for long-distance walking;
 
 (2) running slow, on the road demanding.
 
 Scope:
 
 Relatively fixed for construction sites, especially suitable for narrow construction sites
 
 Crawler crane
 
 Benefits:
 
 (A) driving slow, off-road performance, climbing capacity, tire traction coefficient of 1.5 times;
 
 (2) may be in the mud, swamps and other soft ground construction hoists with relatively stable;
 
 (3) can change a variety of working device for a variety of operations, using a wide range.
 
 Disadvantages:
 
 (A) when traveling on the road devastating; in the transfer distance is long, use a flatbed trailer shipment.
 
 Scope:
 
 For relatively fixed, the ground of poor workplace conditions, is used in a wider Hoisting crane.