Zoomlion ZCC1100H, Руководство оператора

Страница: 107 / 291

履带起重机操作手册
安
全
准
则
Operator’s Manual for Crawler Crane
Operator’s Manual for Crawler Crane
S
a
fe
ty
G
u
id
e
lin
e
s
ZCC1100H Crawler Crane 3-25
3.3.3 Slings introduction
The predominant characteristics of a sling are determined by the components of that sling. For
example, the strengths and the weaknesses of a wire rope sling are essentially the same as
those of the wire rope from which it is made.
a) Slings are generally one of the following six types:
1) Chain;
2) Wire rope;
3) Metal mesh;
4) Natural fiber rope;
5) Synthetic fiber rope;
6) Synthetic web.
b) Factors that must be taken into consideration when choosing the best sling for the job
include:
1) Size of the load;
2) Weight of the load;
3) Shape of the load;
4) Temperature;
5) Sensitivity of the material to be moved;
6) Environmental that the sling will be used.
c) Sling identification tags: all slings should be labeled with identification tags. The
Information required to be on the identification tags is as follows:
1) Manufacturer
’
s name or trademark;
2) Diameter or size of sling;
3) Material of sling;
4) Rated load for the types of sling used;
5) Lifting angle the load rating is based.
3.3.4 Sling safety
a) Before making a lift, check to be certain that the sling is properly secured around the load
and that the weight and balance of the load have been accurately determined. If the load is
on the ground, do not drag the load along the ground. This could damage the sling.
b) Position the hook directly over the load and seat the sling squarely within the hook bowl.
This gives the operator maximum lifting efficiency without stressing the sling.
c) Make sure that the load is not clamped, or bolted to the floor.
d) Guard against shock loading by pulling the slack sling straight slowly.
e) Apply power cautiously so as to prevent jerking at the beginning of the lift, and accelerate
or decelerate slowly.