Wolff Construction Cranes San Antonio

Hydraulic truck cranes are different from other crane models because of the way they specifically operate. Hydraulic cranes use oil rather than utilizing a winch in order to wind up cables to provide the lifting force. As 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 pressure created by the hydraulic pump moves the piston. This action is maneuvered by the driver from the controls within his cab. Typically, hydraulic truck cranes use a 2 gear pump.



Since the actual crane itself is mounted on a truck, it can travel numerous distances from job to job and there is little dismantling involved. The truck crane has one engine that controls both the crane and the truck.



Other Parts

Boom Telescope: The boom telescope is due to a specific hydraulic operation which allows the boom to retract or extend.



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 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 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 with the use of double hydraulic cylinders which could be lowered and raised.



Rotex Gear: The rotex gear is operated by hydraulics and located underneath the cab. It enables the boom to swivel on this gear.

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