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• A commonly used type of small movable crane is the truckcrane, 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 beextended outward like the sections of an old nautical telescopeor spyglass.

WHAT IS A CRANE TRUCK

EXAMPLE

OF

A

CRANE TRUCK

TYPES OF 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.

1. Mobile Cranes

EXAMPLE

OF

A

MOBILE

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.

2. Telescopic 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.

3. Tower Crane

EXAMPLE

OF

A

TOWER

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.

4. Rough Terrain Crane

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 thelifting operation.

The large gear under the cab is the Rotex gear, which allowsthe 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. Boom

2. Jib

3. Rotex gear

4. Outriggers

5. Counterweights

6. Reinforced-steel cable

7. Hook