What is hook path in crane?
LEFTHAND END: A reference to parts or dimensions on the viewer’s left of the centerline of span, established when facing the drive girder side of the crane. LIFT (HOOK TRAVEL): The maximum vertical distance through which the hook can move, as determined by the length of rope and/or the number of grooves on the drum.
How are overhead cranes powered?
Electric overhead cranes, also known as bridge cranes, are typically powered by conductor bar, festooning or a cable reel. There are pros and cons of each type of electrification. In certain situations, overhead cranes are powered manually by push or hand geared options or with air power.
What does Demag stand for?
The name Demag, originally an abbreviation for “Deutsche Maschinenfabrik AG” (“German engineering works corporation”), has been established as a brand in 1819 and has built up an outstanding reputation ever since.
What is slew radius?
Radius. The horizontal distance from the reference line (e.g. centre of rotation of a slewing crane) to the load line (typically through the crane hook).
Which type of electric device is used in cranes?
slip ring induction motor
Conventional AC operated crane drives use slip ring induction motor whose rotor windings are connected to power resistance in 4 to 5 steps by power contactors. Reversing is done by changing the phase sequence of the stator supply through line contactors.
Who owns Demag crane?
Tadano LimitedDemag / Parent organization
What is the boom of a crane called?
There are two different types of crane booms: lattice booms and hydraulic booms. While they both serve the same purpose of lifting and moving objects and materials, they work in different ways.
Which type of DC motor is used in crane?
Wound Field DC Motors They are typically used in coil winding (reel drives) in the milling/metalforming industry, crane/elevator hoists, winches and motor-driven cable reels. When used in crane applications, these motors will be rated for crane duty.
Why is DC series motor used in crane?
DC series motor is best suited for DC traction, cranes as it provides high starting torque and easy speed control which is primary requirement of DC traction.