SANY SY115C9, Инструкция по безопасности, эксплуатации и техническому обслуживанию, Страница: 254 / 445

Operation
Safety, Operation and Maintenance Manual - Sep 2012 4-65
SY115C9/135C/155H Crawler Hydraulic Excavator
CZ335-1103244
important to keep an angle of 90 - 110°
between the arm and the boom. Lower
the bucket to the ground and move the
machine slowly.
11. When the machine is going down the
ramp, slowly operate the boom and arm,
and carefully drive the machine off the
ramp.
Fig. 4-115
4.18.3 Lifting the machine or its com-
ponents
4.18.3.1 Lifting precautions
1. Put wire rope on the middle of hook.
If wire rope is hooked near hook end, the
rope may slide off the hook, causing seri-
ous accident. The middle part of hook is
stronger than the rest parts.
2. Never lift an object when wire rope forms
a bigger sling angle with the hook. If two
or more ropes are used, the load on each
rope increases with sling angle. The fol-
lowing table shows variation of allowable
load kN(kg) with different angles when
two ropes are used to lift a load. If a single
rope is capable of lifting 9.8 kN(1000 kg)
in vertical position, two ropes will be able
to lift 19.6 kN(1000 kg) perpendicularly.
However, when the two ropes forms a sling
angle of 120 degrees, its lifting capacity
becomes 9.8 kN(1000 kg). On the other
Using a single rope to lift an object is pos-
sible to cause turning of the load and un-
fastening or slipping of the rope. Serious
accidents could result.
kN
( kg )
19.6
( 2000 )
18.6
(
1900
)
16.7
( 1700 )
13.7
(
1400
)
9.8
(
1000
)
4.9
(
500
)
19.6
( 2000 )
9.8
( 1000 )
30 60 90 120 150
ZX215-1000001
Lifting angle (°)
Load (kN(kg))
ZX215-1000002
100% 88% 79% 71% 41%
WARNING
Fig. 4-116
Fig. 4-117