Cranes

Cranes are huge towers which have attached pulleys and trolleys. These heavy construction equipments are used for lifting heavy objects. Cranes could be attached to the ground or joined with movable vehicles. These find there use in transport sector for unloading & loading of freight, movement of objects in construction sites & heavy equipment assembly in manufacturing sector.

Lifting Techniques

Cranes use different techniques to lift things, such as:

  1. Use of lever
  2. Use of pulley
  3. Use of hydraulic cylinders

Type of Cranes

There are different types of cranes such as:

  1. Mobile cranes
  2. Tower cranes
  3. Truck mounted cranes
  4. Rough terrain cranes
  5. Loader cranes
  6. Overhead cranes
  7. Crawler cranes
  8. Telescopic cranes
  9. Sidelift cranes
  10. Floating cranes
  11. Hammerhead cranes
  12. Gantry cranes
  13. Jib cranes

Let us now look at some of these cranes:

Mobile Cranes: This is one of the simplest forms of cranes having steel tower that is mounted on top of a movable platform. The movements are controlled using remote and this kind of crane is not capable of heavy material.

Tower Cranes: Such cranes are attached to ground and are capable of lifting very heavy material. There most common use is at building construction and sky scraper construction sites.

Truck Mounted Cranes: As can be figured from the name these cranes are mounted on a truck with outriggers giving the crane the flexibility of vertical & horizontal extension as well as work to stabilize it.

Loader Cranes: This type of crane is attached to huge 18 wheel trailer. The main function of this type of crane is to put heavy objects into the trailer and is hydraulically powered.

Overhead Cranes: These cranes are also known as suspended cranes with a hoist that is set onto trolleys which move along beams. The main purpose for them is to carry heavy objects in a factory from one place to another.

Crawler Cranes: They are similar to rough terrain cranes and are under carriage mounted but are more stable as compared to the rough terrain ones. It has more vertical as well as horizontal extension capability which helps it to lift very heavy object at great elevations.

If you want to purchase used cranes then the best option is to search for companies listing these used cranes for sale on their website. This way you will be able to compare there prices and also the condition they are in.

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