20 Terms
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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
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Cranes
control braking means
Industrial machinery; Cranes
A method of controlling lowering speed of the load by removing energy from the moving load or by imparting energy in the opposite direction.
dynamic brake
Industrial machinery; Cranes
A method of controlling crane motor speeds when in the overhauling condition to provide a retarding force.
electrical braking system
Industrial machinery; Cranes
A method of controlling crane motor speed when in an overhauling condition, without the use of friction braking.
regenerative
Industrial machinery; Cranes
A method of control in which the electrical energy generated by the motor is fed back into the power system.
countertorque
Industrial machinery; Cranes
A method of control by which the power to the motor is reversed to develop torque in the opposite direction to the rotation of the motor.
adjustable voltage
Industrial machinery; Cranes
A method of control by which the motor supply voltage can be adjusted.
