Manitowoc CD25, Руководство оператора, Страница: 97 / 160

4-1
CD25 CAPACITY CHART
4
Published 1-06-2017 Control # 579-01
SECTION 4
CAPACITY CHART
SECTION CONTENTS
Using the Capacity Chart . . . . . . . . . . . . . . . . . . . . 4-1
Operating Boom Radius. . . . . . . . . . . . . . . . . . . . . 4-1
Locating the Lift Capacity. . . . . . . . . . . . . . . . . . . . 4-1
Things to Observe when Using the Capacity Chart4-1
Lifting with the Boom Extension Installed . . . . . . . .4-2
Pick and Carry Ranges. . . . . . . . . . . . . . . . . . . . . .4-2
USING THE CAPACITY CHART
The Capacity Chart (Figure 4-3) for this crane is located on
the inside of the operator’s cab to the right of the seat in a
binder. The chart provides maximum loads that can be safely
lifted and gives conditions under which these maximum lifts
can be made.
Operating Boom Radius
Located on both sides of the boom is an indicator that gives
the angle at which the boom is positioned (Figure 4-1). The
angle of the boom and the length at which the boom is
extended determines the lifting radius of the boom. For
example, if the boom is at a 78° angle and is extended to
20.42 meters (67 feet), the lifting radius is 3.66 meters (12
feet). See capacity chart.
NOTE: To determine the exact lifting radius, use a tape
measure and measure from the boom pivot to the
load line.
Locating the Lift Capacity
Locate on the Capacity Chart the Main Boom Load Ratings.
Find the 3.66 meters (12 foot) radius in the chart. Always use
the next highest radius if the radius measured is not on the
chart. Read across the line to determine what can be lifted at
that radius, either with the outriggers extended and down,
retracted and down or on rubber.
DO NOT
lift more than what the Capacity Chart states.
Things to Observe when Using the
Capacity
Chart
• The rated loads are the maximum lift capacities as
determined by operating radius, boom length and boom
angle. The operating distance from a projection of the
axis of rotation to the supporting surface, before loading,
to the center of the vertical hoist line or tackle load
applied.
• The rated loads shown in the Capacity Chart on
Outriggers do not exceed 85% of actual tipping. The
rated loads shown on rubber do not exceed 75% of
actual tipping. These ratings are based on freely
suspended loads with the crane leveled, standing on a
firm, uniform supporting surface. Practical working loads
depend on supporting surface, operating radius and
other factors affecting stability. Hazardous surroundings,
climatic conditions, experience of personnel and proper
training must be taken into account by the operator.
• The weights of all load handling devices such as hooks,
hook blocks, slings, etc., except the hoist rope, shall be
considered as part of the load. See item 1. The weights
for these items are stated on the
Capacity Chart .
• Ratings on outriggers are for either outriggers fully
extended and down or fully retracted and down. Ratings
for outriggers fully retracted and down will apply for any
intermediate outrigger setting.
• Ratings on rubber depend on tire capacity, condition of
the tires and proper inflation pressure of 758 kPa (110
psi). Loads on rubber may be transported at a maximum
speed of 4 km/h (2.5 mph) on a smooth level surface
with the boom retracted to the shortest length possible
and centered over the front. Do not use the boom
extension on rubber.
• For operating radius not shown on the Capacity Chart ,
use load rating of the next larger radius.
FIGURE 4-1
Reference Only