Crane Truck Sydney Services By
DELTA TRANSPORT
Visit us online at http://www.deltatransport.net.au/hiab-truck-hire/
WHAT IS A CRANE TRUCK • A commonly used type of small movable crane is the truck crane, which is a crane mounted on a heavy, modified truck. • Such cranes frequently use unsupported telescoping booms. • These are made up of collapsible sections that can be extended outward like the sections of an old nautical telescope or spyglass.
EXAMPLE OF A CRANE TRUCK
TYPES OF CRANES 1. Mobile Cranes The most basic type of crane consists of a steel truss or telescopic boom mounted on a mobile platform, which could be a rail, wheeled, or even on a cat truck. The boom is hinged at the bottom and can be either raised or lowered by cables or hydraulic cylinders.
EXAMPLE OF A MOBILE CRANE
2. Telescopic Crane This type of crane offers a boom that consists of a number of tubes fitted one inside of the other. A hydraulic mechanism extends or retracts the tubes to increase or decrease the length of the boom.
3. Tower Crane The tower crane is a modern form of a balance crane. When fixed to the ground, tower cranes will often give the best combination of height and lifting capacity and are also used when constructing tall buildings.
EXAMPLE OF A TOWER CRANE
4. Rough Terrain Crane A crane that is mounted on an undercarriage with four rubber tires, designed for operations off road. The outriggers extend vertically and horizontally to level and stabilize the crane when hoisting. These types of cranes are single engine machines where the same engine is used for powering the undercarriage as it is for powering the crane. In these types of cranes, the engine is normally mounted in the undercarriage rather than in the upper portion.
HYDRAULIC CRANE TRUCKS Hydraulic truck cranes are used to lift heavy loads to tall heights. It is important that the truck be completely stable during the lifting operation. The large gear under the cab is the Rotex gear, which allows the cab to swivel and move the boom from side to side.
EXAMPLE OF A HYDRAULIC CRANE
PARTS OF A HYDRAULIC CRANE • There are many components involved in lifting a load. • Here are the basic parts of every hydraulic truck crane: 1. 2. 3. 4. 5. 6. 7.
Boom Jib Rotex gear Outriggers Counterweights Reinforced-steel cable Hook
H T
A
N
K
O Y -
U