Cranes

Cranes

A crane is a type of machinery used for lifting and moving heavy materials in construction, transportation (loading and unloading merchandise) and other fields. Most cranes are equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them around.

Industry: Industrial machinery

Add a new term

Contributors in Cranes

Become a Contributors

Cranes

variable voltage

Industrial machinery; Cranes

A method of control by which the motor supply voltage can be adjusted.

counter-torque

Industrial machinery; Cranes

A method of control by which the motor is reversed to develop power to the opposite direction.

dynamic lowering

Industrial machinery; Cranes

A method of control by which the hoist motor is so connected in the lowering direction, that when it is overhauled by the load, it acts as generator and forces current either through the resistors or ...