Broderson IC-200-2H, Руководство по эксплуатации и обслуживанию

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2-16
C A U T I O N
A capacity load may be carried on the boom, or a capacity load may be carried on the
deck, but not at the same time. The total of the percent of deck load and the percent
of boom load must not exceed 100%. For example, if the boom load is 100% of its
capacity at its current load radius, the deck load capacity is 0%. If the boom load is
60% of the load rating for its load radius, the deck load capacity is 40% of maximum.
C A U T I O N
The ON OUTRIGGER capacities of this crane are based on all outriggers being FULLY
EXTENDED to a FIRM, LEVEL surface with no load on the tires. The crane may tip at
less than capacity loads if operated in the following manner:
A. Outriggers only partially extended and resting on curbing, shoring, etc. If the outriggers
are not all the way DOWN, they are not all the way OUT.
B. Crane operated on a hill or sloping surface. Cr ane will tip at less t han rated capacity
when load is lifted on downhill side.
C. Outriggers extended to a sur face that appears to be firm, but is unable to support the
outrigger pad at full rated loads. Examples of this type of surface are:
1. Thin or cracked blacktop or concrete.
2. Dirt that appears dry and firm on top but is moist or unpacked beneath the
surface.
3. Dirt with a frozen but thin crust.
CAPACITY EXAMPLE (See Boom Extension Capacity Example Page 2-22)
Refer to the IC-200-H capacity chart on the preceding page. A load 5’ X 5’ X 5’ (1.5 m x 1.5
m x 1.5 m) and weighing 14,000 pounds (6350 kg) is to be lifted onto the deck of the crane
for transport to a new location. We see on t he chart that 7500 pounds ( 3400 kg) is t he
maximum load on one-part line, so the sheave block is r equired. T he charts show the
weight of the standard sheave block to be 210 pounds ( 96 kg). The rigger says that two
slings are required, weighing a t otal of 50 pounds ( 23 kg). The total load is
14,000+210+50=14,260 (6350 + 96 + 23 = 6469 kg).
Looking at the 360° ROTATION, ON RUBBER colum n we see t hat we can lif t 16,000
pounds (7250 kg) at a 6- foot (1.8 m)load radius. How ever, this radius is less than the
distance from the center of rotation to the center of the load, with the crane parked next to
the load, so the load cannot be lifted this way. This leaves the ON OUTRIGGERS columns.
The outriggers should always be used w henever possible anyway. We see that we can lift
up to 18,500 pounds (8520 kg) at a 10-foot (3.0 m) load radius, either over the front or over
the side. If possible, position the crane to lift the load over the front. This is the best position
for stability. Checking the chart again, we see that the load is w ithin the deck load limit of
17,000 pounds (7700 kg) and that the travel speed with the load must be limited to creep
speed. Creep speed is less than 2 MPH (3 km/h) and not to exceed 200 feet (60 m) in a 30
minute period. This is an approved relationship between load, tire pressure and speed.
C A U T I O N
REMEMBER THAT AS THE BOOM IS LOADED, DEFLECTION OF THE BOOM, TIRES,
ETC. WILL INCREASE THE LOAD RADIUS. SO BE CONSERVATIVE IN YOUR
CAPACITY ESTIMATE.
Courtesy of Crane.Market