Crawler cranes, also known as mobile cranes, are all-terrain cranes equipped with a set of tracks or legs rather than wheels. They are self-propelled and can traverse all terrains, even soft grounds, making them highly maneuverable at construction sites. Mobile cranes have excellent lifting capacities ranging from 5 tons to over 1000 tons and can handle heavy loads efficiently for construction jobs.
Key Components of a Crawler Crane
The major components that make up a mobile crane include:
- Undercarriage: The undercarriage comprises a set of Crawler Cranes or legs that enable the crane to move on any ground conditions. Track shoes provide firm traction while traveling.
- Superstructure: It contains the crane's horizontal boom, counterweight, cab, winch and wire ropes. The superstructure rotates over the trackshell.
- Boom: It is the main lifting arm of the crane made from steel or aluminium. Booms come in sections that can be extended using winches.
- Jib: An optional telescopicextension is attached at the end of the main boom to reach farther locations.
- Counterweight: It is a heavy block placed at the rear/back of the crane to provide stability during lifting operations.
- Control Cab: An air-conditioned cab equipped with control consoles, joysticks and levers for the operator to maneuver the crane.
- Engine: Diesel engines in the range of 200-1000 HP power the movement of tracks and superstructure rotation.
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