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Glossary

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  • a

  • Bolt securing crane columns or rails.
  • Sensors preventing cranes from colliding with each other.
  • Safety standard for top-running overhead and gantry cranes.
  • Standard covering overhead underhung and stationary hoists.
  • Standard covering overhead cranes and monorail systems, specifically underhung bridge cranes or trolleys, jib cranes, and gantry cranes.
  • The vertical load on an axle of a bridge or trolley.

  • b

  • Steel plate connecting column to foundation.
  • Device attached to crane hook used to lift loads.
  • Force applied by the brake to stop motion.
  • The primary horizontal structure consisting of girders and end trucks.
  • Mechanism moving crane bridge along runway.
  • The main horizontal beam that supports the hoist trolley and is supported by the end trucks.
  • Rail mounted on top of the girder that supports the trolley.
  • The speed at which the crane bridge moves along the runway.
  • ASME design standard for below-the-hook lifting devices.
  • Shock-absorbing device that protects cranes from collision.

  • c

  • A crane supported from building roof structure.
  • Classification system defined by the Crane Manufacturers Association of America.
  • A jib crane supported by a floor-mounted column.
  • Electrical switching components used to control motors.
  • Enclosure housing crane electrical controls.
  • Engineering classification defining crane workload.
  • Upgrading existing manual push crane systems with motorized bridge and/or hoist trolley.
  • Device securing rail to runway beam.
  • Sensors preventing two cranes from overloading a section of runway.

  • d

  • The weight of all permanently installed parts of the crane.
  • The vertical displacement of a girder due to the weight of the load and/or the trolley.
  • Safety factor used in crane engineering calculations.
  • The cylindrical component that winds wire rope during lifting.
  • The frequency of use and the percentage of capacity lifted, which determines the crane's classification.
  • Classification indicating expected crane service conditions.

  • e

  • Safety control that immediately stops crane operation.
  • Device measuring motor rotation for precise speed control.
  • A device that prevents cranes or trolleys from traveling beyond limits.
  • The assembly consisting of a frame, wheels, and axles that supports the bridge girder and moves along the runway.

  • f

  • A system of cables and carriers that provide power and control to the trolley and hoist.
  • Concrete base supporting crane structure.
  • Daily or monthly inspection depending on crane use.

  • g

  • A crane supported by legs that travel on ground rails or floor.
  • The vertical structural support used in gantry cranes to carry the bridge.
  • Mechanical transmission transferring motor power.

  • h

  • Classification for equipment operating in explosive environments.
  • The machinery unit that provides the vertical lifting and lowering motion.
  • Electric motor powering lifting motion.
  • Replacement or improvement of hoisting equipment.
  • The rate at which the hoist lifts or lowers a load.
  • The minimum horizontal distance from the center of the hook to the runway rail or wall.

  • i

  • Moving the crane or hoist in small increments for precise positioning.
  • Routine evaluation of crane components for safety and wear.

  • j

  • A crane with a horizontal boom that supports a movable hoist.

  • l

  • The maximum vertical distance the hook can travel.
  • Device that stops crane motion at predefined travel limits.
  • The maximum load the crane is rated to lift, plus the weight of the moving trolley.
  • Assembly containing the hook and sheaves.
  • Device used to control the lowering speed of a load.
  • The chain used by a hoist to lift and lower loads.
  • Device displaying the weight being lifted.
  • Testing crane with a known load to verify performance.
  • Safety procedure ensuring equipment is de-energized during maintenance.
  • Device preventing the hook from lowering too far.

  • m

  • Record documenting inspections and maintenance.
  • A single beam track used to support hoists in linear lifting systems.
  • Brake used to stop crane motor rotation.

  • n

  • Standards defining electrical enclosure protection levels.

  • o

  • Federal safety regulation governing overhead and gantry cranes in general industry.
  • System preventing lifting beyond rated capacity.

  • p

  • A composite track made of high-carbon steel specifically designed for durability and smooth rolling.
  • A suspended control station allowing the operator to control crane motions from the floor.
  • Comprehensive inspection performed at scheduled intervals.
  • Testing crane above rated capacity to verify structural integrity.

  • q

  • Individual with knowledge and experience to evaluate crane safety.

  • r

  • Wireless handheld device used to operate crane motions remotely.
  • Connection joining sections of runway rail.
  • Testing crane at its rated capacity.
  • Arrangement of wire rope and sheaves for lifting.
  • The rails, beams, and brackets on which the crane operates.
  • Adjustment ensuring crane rails are properly aligned.
  • Structural beam supporting the runway rail.
  • Device preventing crane from leaving runway.
  • The steel rail mounted on runway beams that supports crane wheels.
  • Vertical structural support holding runway beams.

  • s

  • Latch preventing load from slipping off the hook.
  • A crane with one end supported by runway and the other by legs.
  • A grooved wheel used to guide wire rope in lifting systems.
  • Control method that gradually accelerates crane motion.
  • Control method that gradually decelerates crane motion.
  • The horizontal distance between the center-to-center of the runway rails.
  • Technology reducing load swing during crane movement.

  • t

  • The unit carrying the hoisting mechanism that travels on the bridge rails.
  • Mechanism moving trolley across bridge.
  • The speed at which the trolley moves across the bridge.

  • u

  • Safety device preventing the hook from traveling too high.

  • v

  • Electronic controller that adjusts speed and torque of crane motors.

  • w

  • Adjustment ensuring crane wheels track properly.
  • The load transmitted to the runway by each crane wheel.
  • The load transmitted to the runway by each crane wheel.
  • Steel cable used for lifting in wire rope hoists.

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Rich McInnis, Tom Shultz, and Emily Carrier
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