Hydraulic truck cranes are different from other crane models due to the way they specifically operate. Hydraulic cranes utilize oil instead as opposed to using a winch in order to wind up cables to provide the lifting force. Since oil is a type of fluid which retains its volume, it is incompressible. Thus, this means it is amongst the most ideal types of fluids for pushing pistons towards the direction the force is going to be exerted.
The pressure created by the hydraulic pump moves the piston. This action is maneuvered by the driver utilizing the controls inside his cab. Normally, hydraulic truck cranes make use of a 2 gear pump.
The truck mounted crane is able to move from one location to another with little need for dismantling. The truck crane has one engine which could control both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope is due to a specific hydraulic operation that enables the boom to retract or extend.
Jib: Jibs are latticed structure booms..
Boom Swing: The boom swing is a large ball or roller that is attached to the carrier. It can swing 360 degrees in both directions. Hydraulic mechanisms provide swings at varying speeds and control the swing in order to rotate the turntable gearbox.
Outrigger: Outriggers are units that cranes will use to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to warn the driver that maximum weight is approaching.
Pump: The pump is the device responsible for steering the outrigger.
Steel Cables: Steel reinforced cables run through the boom and the jib. They can generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders which are capable of being lowered and raised.
Rotex Gear: The rotex gear is situated under the cab and operated by hydraulics. It allows the boom to swivel on this gear.