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. As oil is a type of fluid which retains its volume, it is incompressible. Hence, this means it is amongst 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 using the controls within his cab. Normally, hydraulic truck cranes use a pump which has 2 gears.
As the actual crane itself is mounted on a truck, it is able to travel numerous distances from job to job and there is little dismantling involved. The truck crane has a single engine that controls both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope is due to a particular hydraulic operation which allows the boom to retract or extend.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: Boom swings have a large ball or roller 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 rotate the turntable gearbox.
Outrigger: Outriggers are units that cranes would utilize to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights that 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 could generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The crane's boom ascends utilizing double hydraulic cylinders which allow for lowering and raising materials.
Rotex Gear: The rotex gear is situated underneath the cab and operated by hydraulics. It enables the boom to swivel on this gear.