Hydraulic truck cranes are different compared to other crane models due to the way they particularly work. Hydraulic cranes use oil instead as opposed to utilizing a winch in order to wind up cables to provide the lifting force. Because oil is a fluid which retains its volume, it is incompressible. Therefore, this means it is among the most ideal types of fluids for pushing pistons towards the direction the force is going to be exerted.
The hydraulic pump generates a pressure that moves the piston. This action is maneuvered by the driver using the controls within his cab. Typically, hydraulic truck cranes make use of a pump that has 2 gears.
The truck mounted crane is able to move from one location to another with little need for dismantling. The truck crane has a single engine that can control both the truck and the crane.
Other Components
Boom Telescope: The boom telescope is due to a specific hydraulic operation that allows the boom to extend or retract.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: The boom swing is a large roller or ball which is connected to the carrier. It could swing 360 degrees in both directions. Hydraulic devices provide swings at various speeds and control the swing in order to revolve the turntable gearbox.
Outrigger: Outriggers are units that cranes will use to maintain its balance. It uses hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to alert the driver that maximum weight is approaching.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They could generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The crane's boom ascends with the use of double hydraulic cylinders which could be lowered and raised.
Rotex Gear: The rotex gear is operated by hydraulics and located under the cab. It allows the boom to swivel on this gear.