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Page Title:
Table III. Height, reach and loads |
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|  MIL-T-62110G
3.3.3 Height and reach. The derrick shall provide for hydraulically powered movement
from horizontal to not less than 75 degrees above horizontal and return, continuous rotation
about a vertical axis in both directions, and telescopic extension and retraction. For each
telescoping section position listed in table III at not more than the corresponding angle specified
in table III, the derrick height, from the ground to the centerline of the upper head sheave, shall
be not less than that specified in table III. The basket floor to ground height shall be not less
than specified in table III.
3.3.4 Vertical loads. For each telescoping section position listed in table III, the derrick
shall be capable of suspending, on the winch line over the upper head sheave, the corresponding
load at not more than the specified angle and at all greater angles attainable. The derrick shall be
capable of elevating from and lowering back to the angle specified with the load but shall be
incapable of elevating from a horizontal position with loads that would result in permanent
deformation. The derrick shall be capable of retracting (from extended positions) and returning
back to extended position with the load. All operations of rotating, elevating or lowering, and
extending or retracting shall be possible singly and in all combinations, all while both loaded and
unloaded. Operations as specified above shall be possible at all rotational positions of the
derrick without any vehicle wheel leaving the ground and without the permanent deformation of
any part.
TABLE III. Height, reach and loads.
Degrees
Height from ground
Load (pounds)
Telescoping section
from
(feet) size
size
position
horizontal
55
70
55
70
Without fiberglass
extension:
1. Retracted
75
22
26
9,000
12,000
2. Extended
75
30
35
6,500
8,000
3. Extended
45
24.5
28
3,400
3,400
4. Horizontal
extended
0
10
10
1,800
2,200
With derrick and
fiberglass extension
extended:
1. Without baskets
75
36.5
44.5
4,500
6,300
45
29.5
35
2,000
2,500
0
10
10
1,350
1,700
2. Basket floor to
75
32
40
300
300
ground height
0
-
-
300
300
3.3.5 Rotation. The turret assembly shall rotate the loads specified in 3.3.4 at a speed of
not less than 0.5 revolution per minute (rpm) and not more than 1.5 rpm with the engine
pushbutton throttle advanced (see 3.12). The turret assembly shall be capable of smoothly
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