Crane Schedule - Crane Information
(Revised: 01/20/2014)
The
Crane Information tab defines the general parameters and the general usage of
each crane.
From
this tab, the crane specifications / data can be automatically loaded based on the
data entered on this tab.
Crane Data Table
|
Crane Type |
Operation |
Bridge
Construction |
Spans (ft.) |
Capacity (tons) |
|
Underhung |
Hand |
Single Girder |
10 - 50 |
0.5 - 10 |
|
Underhung |
Electric |
Single Girder |
10 - 60 |
1 - 10 |
|
Top Running |
Hand |
Single Girder |
10 - 50 |
0.5 - 10 |
|
Top Running |
Electric |
Single Girder |
10 - 60 |
1 - 10 |
|
Top Running |
Electric |
Double Girder |
28 - 60 |
5 - 25 |
|
Top Running |
Electric |
Double
Reinforced Girder |
40 - 66 |
10 - 30 |
|
Top Running |
Electric |
Double Box Girder |
40 - 105 |
10 - 60 |
Options:
Name
In
this edit box, enter a name for the crane that is being defined. If a name is
not entered into this field, a name will be assigned based on the capacity,
bridge span, and type.
Type
From
this drop list, select the crane type.
Top
Running Bridge Cranes
are characterized by the bridge and trucks bearing on top of the rails attached
to the runway beams & Brackets on the columns. They are generally used for
more severe applications with heavier loads, higher service classifications,
and where high travel speeds are required. In comparison to under hung cranes,
top running cranes usually provide greater hook height and greater clearance
below the crane girder. They may be single girder, double girder, or box
girder.
Underhung
Bridge Cranes
are characterized by the bridge end trucks being suspended on Brackets from the
lower flange of the runway beam. They are generally used for less severe
applications with lighter loads and lower service classifications. In comparison
to top running cranes, underhung cranes usually provide greater hook cover,
clearance beneath the runway beam, and clearance for overhead obstructions.
They may be single or double girder with the trolley suspended from the lower
flange of the girder or girders.
(Underhung)
Monorail Cranes
are characterized by the hoist being suspended from the lower flange of a
single supporting runway beam. Monorail cranes are generally used where
materials are moved over predetermined paths. They are ideal for applications
where materials are moved through a series of operations, which do not require
removal of the material from the hoist or carriers.
Capacity
In
this edit box, enter the crane capacity (English units are in tons).
Estimate Bridge Span
In
this edit box, enter the approximate Bridge Span.
This
dimension is from centerline of rail
to centerline of rail, not the
building line to interior column or aisle span.
Service Classification
From
this drop list, select the Service Classification of the crane.
Class A (Standby or Infrequent Service) This service class covers
cranes which may be used in installations such as powerhouses, public
utilities, turbine rooms, motor rooms and transformer stations where precise
handling of equipment at slow speeds with long, idle periods between lifts are
required. Capacity loads may be handled for initial installation of equipment
and for infrequent maintenance.
Class B (Light Service) This service covers cranes
which may be used in repair shops, light assembly operations, service
buildings, light warehousing, etc. where service requirements are light and the
speed is slow. Loads may vary from no load to occasional full rated loads with
2 to 5 lifts per hour, averaging 10 feet per lift.
Class C (Moderate Service) This service covers cranes,
which may be used in machine shops or paper mill machine rooms, etc., where
service requirements are moderate. In this type of service, the crane will
handle loads which average 50% of the rated capacity with 5 to 10 lifts per
hour, averaging 15 feet, not over 50% of the lifts at rated capacity.
Class D (Heavy Service) This service covers cranes
which may be used in heavy machine shops, foundries, fabricating plants, steel
warehouses, container yards, lumber mills, etc., and the standard duty bucket
and magnet operations where heavy duty production is required. In this type of
service, loads approaching 50% of the rated capacity will be handled constantly
during the working period. High speeds are desirable for this type of service
with 10 to 20 lifts per hour averaging 15 feet, not over 65% of the lifts at
rated capacity.
Method of Operation
From
this drop list, select the Method of Operation of the crane.
Bridge Construction
From
this drop list, select the Bridge Construction of the crane.
Single Girder Top
Running Crane Single
girder cranes are generally used on shorter spans and lower capacities or
service classifications. The trolley for single girder cranes is suspended from
the crane girder. The power source for the hoist, trolley, or bridge may be
hand geared or electric. Electric powered cranes are normally operated by a
pendant push button station suspended from the hook.
Double Girder Top Running
Crane Double
girder cranes are generally used on moderate spans while box girder cranes are
used on larger spans. Both are used for higher capacities and service
classifications. The trolley bears on rails attached to the upper flanges of
the crane girders. The power source for double girder cranes is usually
electric and the cranes are commonly pendant operated or operated from a cab
located on the bridge.
Apply Crane Data
Press
this button to have the software look up the Crane Specifications / Data to
automatically load based on the data entered on this tab.
The
software will find an exact match for: type, operation, bridge construction and
it will find closest span and closest capacity equal to or greater than
input. The result from the search will
be displayed in a pop-up box.
This
option is disabled when the Crane Type is Monorail.
Standard
Controls:
See also:
§ Crane
Schedule - Specifications