Hydraulic truck cranes are different compared to other crane models because of the way they particularly work. Hydraulic cranes use oil rather than using a winch in order to wind up cables to provide the lifting force. As oil is a kind of fluid which 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 pressure generated by the hydraulic pump moves the piston. This action is maneuvered by the operator using the controls in his cab. Typically, hydraulic truck cranes use a 2 gear pump.
The truck mounted crane is able to move from one site to another with little need for dismantling. The truck crane has one engine that could control both the truck and the crane.
Other Components
Boom Telescope: The boom telescope is due to a specific hydraulic operation that allows the boom to extend or retract.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: Boom swings have a big roller or ball attached to the carrier. It could swing 360 degrees in both directions. Hydraulic mechanisms provide swings at varying speeds and control the swing in order to revolve the turntable gearbox.
Outrigger: Outriggers are units that cranes will 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 warn the driver that maximum weight is approaching.
Pump: The pump's purpose is to steer the outrigger.
Steel Cables: Steel reinforced cables run through the boom and the jib. 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 which can be lowered and raised.
Rotex Gear: The rotex gear is situated under the cab and operated by hydraulics. It enables the boom to swivel on this gear.