Due to the way they specifically work, hydraulic truck cranes are different from other crane models. As opposed to utilizing 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. 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 particular action is maneuvered by the operator using the controls inside his cab. Normally, hydraulic truck cranes make use of a 2 gear pump.
Because the actual crane itself is mounted on a truck, it could travel numerous distances from site to site and there is little dismantling involved. The truck crane has one engine which controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope enables the boom to retract or extend because of hydraulics.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: The boom swing is a large ball or roller which is connected to the carrier. It is able to swing 360 degrees in both directions. Hydraulic mechanisms control the swing and provide swings at various speeds in order to revolve the turntable gearbox.
Outrigger: The outrigger is a unit that helps the crane maintain its balance by utilizing hydraulics to lift the truck.
Load Movement Indicator: In order to warn the driver that maximum weight is approaching, the load movement indicator's lights flash.
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 crane's boom ascends with the use of double hydraulic cylinders that can be lowered and raised.
Rotex Gear: The rotex gear is operated by hydraulics and located under the cab. It enables the boom to swivel on this gear.