Due to the way they specifically operate, hydraulic truck cranes are different compared to other crane models. Rather than using a winch in order to wind up cables to provide the lifting force, hydraulic cranes use oil instead. Because oil is a fluid which retains its volume, it is incompressible. Thus, this means it is one of the most ideal kinds 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 operator utilizing the controls in his cab. Normally, hydraulic truck cranes use a pump which 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 one engine which controls both the crane and the truck.
Other Components
Boom Telescope: The boom telescope enables the boom to retract or extend because of hydraulics.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a big ball or roller connected to the carrier. It can swing 360 degrees in both directions. Hydraulic devices provide swings at varying speeds and control the swing in order to rotate the turntable gearbox.
Outrigger: Outriggers are units that cranes will utilize to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights that flash so as to alert the driver that maximum weight is approaching.
Pump: The pump is the device responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the jib and the boom. They can generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders that could be lowered and raised.
Rotex Gear: The rotex gear is operated by hydraulics and located underneath the cab. It allows the boom to swivel on this gear.