Download Crane Terminology PDF

TitleCrane Terminology
Tags Electricity Brake Elevator Crane (Machine)
File Size213.9 KB
Total Pages42
Document Text Contents
Page 1

Abnormal operating
conditions

General Environmental conditions that are unfavorable,
harmful, or detrimental to or for the operation of
a crane, such as excessively high or low
ambient temperatures, exposure to adverse
weather, corrosive fumes, dust-laden or mois-
ture-laden atmospheres, and hazardous
locations. (ASME B30.2-1990)

Access platform Overhead
Crane

A limited length platform, located on the idler
girder to access to the endtruck wheels only.

Adjustable or
variable voltage

Bridge
Crane
Control

A method of Bridge Crane Control by which the
motor supply voltage can be adjusted. (CMAA
Spec. 70)

Administrative or
regulatory authority

Regulatory Governmental agency or, in the absence of
governmental jurisdiction, the employer.
(ASME B30.2-1990)

Ambient temperature General The temperature of the atmosphere
surrounding the hoist. (ASME HST-4M-1991)

Ampacity Bridge
Crane
Bridge
Crane
Electrical

The current carrying capacity expressed in
amperes. (ANSI MH 27.1-1981)

Appointed Regulatory Assigned specific responsibilities by the
employer or the employer’s representative.
(ASME B30-17)

Authorized Regulatory Appointed by a duly constituted administrative
or regulatory authority. (ASME B30-17)

Automatic crane Overhead
Crane

A crane which when activated operates
through a preset cycle or cycles. (ANSI MH
27.1-1981)

Automatic dispatch
carrier

Monorail A carrier which when activated operates
through a preset cycle or cycles. (ANSI MH
27.1-1981)

Auxiliary hoist Hoist A supplemental hoisting unit, usually designed
to handle lighter loads at a higher sped than
the main host. (CMAA Spec. 70)

Axle, fixed Drive A shaft which is fixed in the end truck and
about which the wheel revolves. (WCH)

Axle, rotating Drive A shaft which is fixed in the wheel and which
rotates on bearings fixed in the end truck.

Page 41

Vacuum lifter Below hook
device

— a below-the-hook lifting device for lifting and
transporting loads in a fixed attitude using a
holding force by means of vacuum. (ASME
B30.20-1985)

Vacuum manipulator Below hook
device

A vacuum lifter capable of repositioning the
load while suspended. (ASME B30.20-1985)

Vacuum pad Below hook
device

A device which applies a holding force on the
load by means of vacuum. (ASME B30.20-
1985)

Vacuum reservoir Below hook
device

The evacuated portion of the vacuum system
whose function is to compensate for leakage
into the vacuum system or to provide a vacuum
reserve in event of vacuum generator failure.
(ASME B30.20-1985)

Variable frequency Bridge
Crane
Control

A method of Bridge Crane Control by which the
motor supply voltage and frequency can be
adjusted. (CMAA Spec. 70)

Vertical lift Below hook
device

A condition where the surface to which a
vacuum pad is attached is in a vertical plane.
(ASME B30.20-1985)

Voltage drop Bridge
Crane
Control

The loss of voltage in an electric conductor
between supply tap and load tap. (CMAA Spec.
70)

W section Bridge
Crane &
Runway

A wide flange beam shape as defined by the
American Institute of Steel Construction.
(CMAA Spec. 74)

Wall mounted Hoist A type of hoist mounting in which the hoist is
mounted to a vertical surface. (ASME HST-4M-
1991)

Web plate Bridge
Crane

The vertical plate connecting the upper and
lower flanges or cover plates of a girder.
(CMAA Spec. 70)

Wheel load Bridge
Crane &
Runway

The load without impact on any wheel with the
trolley and lifted load (rated capacity)
positioned on the bridge to give maximum
loading. (CMAA Spec. 70)

Wheel yoke Bridge
Crane &
Monorail

A frame on which a pair of carrier (trolley)
wheels are mounted. (ANSI MH 27.1-1981)

Wheelbase Bridge Distance from center-to-center of outermost

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