Overhead Crane and Hoist Terminology
What is an Overhead Crane?
In its most basic form, an overhead crane is a machine or piece of equipment that allows you to precisely raise and transfer heavy materials from one place to another. Each overhead Crane is carefully designed and built for a particular function or application to meet a business' material handling needs, so there is no 'one size fits all' approach to identifying an overhead crane. Different components can be switched out or engineered to increase overhead cranes' capacity and efficiency, which can be designed and installed in various configurations. Below you can know more about overhead crane and hoist terminology.
Here are some Overhead Crane and Hoist Terminology
Abnormal Operating Conditions: Extremely high or low temperatures, corrosive gases, dusty or damp atmospheres, and dangerous locations are examples of environmental factors that are unfavourable, toxic, or detrimental to the activity of a crane or hoist.
Adjustable or Variable Voltage: The motor supply voltage can be changed using this method of control.
Anchor Bolt : A jib crane is held in place by a bolt with its head lodged in masonry or concrete and its threaded portion protruding.
ANSI: The American National Standards Institute (ANSI) is a non-profit
Appointed: The employer or a representative of the employer assigns particular duties.
ASCE Rail : The bridge rides on the runway rails on top of moving cranes.
Automatic Crane When a crane is powered, it follows a predetermined sequence or cycles.
Auxiliary Hoist: A supplemental hoisting unit with a lower capacity and, in most cases, a faster speed than the main hoist.
Axial load : In a jib crane, the overall vertical force applied to the supporting structure. Axial load = (crane's total weight) + (crane's axial load) (design factor x weight of load)
Auxiliary Girder (Outrigger): To reduce the torsional forces that such a load might otherwise exert on the main girder, a girder arranged parallel to the main girder is used to support the frame, motor base, operator's cab, control panels, and other objects.
Bearing Life Expectancy: An anti-friction bearing's L-10 life is the minimum expected life, measured in hours, of a group of bearings operating at a given speed and load. The bearing's average expected life is about five times that of the L-10.
BHN: Brinell hardness number is a material hardness measurement.
Boom (Overhead Crane): A horizontal member that allows the load to be hoisted and lowered from a location other than directly underneath the hoist drum or trolley. On a trolley, the boom is installed.
Boom (Gantry Crane): A retractable or raised trolley runway extension is often used to gain clearance for gantry travel.
Box Section: The four-sided rectangular cross section of girders, end trucks, or other representatives.
Brake: A system on a hoist or Crane that, rather than a motor, uses power or friction to stop or delay motion.
Branch Circuit: The circuit conductors between the circuit's final overcurrent system and the outlet (s).
Cab Operated Crane: An operator in a cab on the bridge or trolley controls the Crane.
Cantilever Gantry Crane :The bridge girders or trusses of a gantry or semi-gantry Crane extend transversely beyond the crane runway on one or both sides.
CMAA: America's Crane Manufacturers Association Collectors are instruments that collect current from runway conductors by making contact with them. The bridge's mainline collectors are used to transport electrical current from the runway conductors.
Double Girder: Two end trucks, two bridge girders, and the trolley hoist assembly make up an overhead crane. The trolley travels over rails that run along the tops of the bridge girders.
Drive Girder; The side of the girder on which the bridge drive machinery is mounted.
ECL (Equivalent Center Load): One or more loaded wheels of the end truck or trolley trigger successful loading on the middle of the beam.
Floor-Operated Crane: An operator on the floor or on an isolated platform controls a pendant or nonconductive rope crane.
Gantry Crane The bridge for holding the trolley or trolleys is rigidly balanced on one or more legs running on fixed rails, similar to a top running crane.
Hoist Chain A hoist's load-bearing chain.
Hydraulic Brake: A hydraulic brake that allows for the slowing or stopping of motion.
Longitudinal Stiffeners: To avoid web buckling, horizontal members are fixed to the bridge girder's web.
Curved Monorail: A Curved Monorail System transports goods along a fixed, curved route on a single beam. To allow for more floor space, the monorail system is mounted to an existing overhead structure.
Switches: A Monorail System with Switches enables the product to be transported along a set route to any location inside the facility on a single beam.
Span (Jib Crane): The span of a jib crane is the distance between the pivot point and the end of the boom. It's worth noting that "span" is longer than "working span" or "hook coverage."
Storage Bridge Crane: Long-span gantry crane for bulk material storage; bridge girders or trusses are rigidly or non-rigidly supported on one or more legs. It may have one or more cantilever ends that are fixed or hinged.Click here to know more about overhead crane and hoist terminology