Hydraulic truck cranes are different from other crane models because of the way they particularly operate. Hydraulic cranes use oil rather than utilizing a winch in order to wind up cables to provide the lifting force. Because oil is a fluid that retains its volume, it is incompressible. Therefore, 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 which moves the piston. This action is maneuvered by the driver using the controls within his cab. Typically, hydraulic truck cranes use a pump that 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 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 that allows the boom to extend or retract.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a large roller or ball attached to the carrier. It can swing 360 degrees in both directions. Hydraulic mechanisms provide swings at various speeds and control the swing in order to rotate the turntable gearbox.
Outrigger: Outriggers are units which cranes would use 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 alert the operator that maximum weight is approaching.
Pump: The pump is the mechanism 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 using double hydraulic cylinders that allow for lowering and raising materials.
Rotex Gear: The rotex gear is located beneath the cab and operated by hydraulics. It enables the boom to swivel on this gear.