Due to the way they specifically work, hydraulic truck cranes are different compared to other crane models. Instead of using a winch in order to wind up cables to provide the lifting force, hydraulic cranes utilize oil instead. Since 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 hydraulic pump generates a pressure that moves the piston. This action is maneuvered by the driver using the controls in his cab. Normally, hydraulic truck cranes make use of a pump that has 2 gears.
Because the actual crane itself is mounted on a truck, it is able to travel many distances from job to job and there is little dismantling involved. The truck crane has a single engine that controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope is due to a particular hydraulic operation that enables the boom to extend or retract.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a large ball or roller attached to the carrier. It is able to swing 360 degrees in both directions. Hydraulic devices control the swing and provide swings at varying speeds in order to rotate the turntable gearbox.
Outrigger: The outrigger is a unit that helps the crane maintain its balance by using hydraulics to lift the truck.
Load Movement Indicator: In order to alert the operator that maximum weight is approaching, the load movement indicator's lights flash.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the jib and the boom. They are able to generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The crane's boom ascends utilizing double hydraulic cylinders that allow for raising and lowering supplies.
Rotex Gear: The rotex gear is operated by hydraulics and located beneath the cab. It allows the boom to swivel on this gear.