Operator’s 履带起重机操作手册 Manual for Crawler Crane
3.3 Slings 3.3.1 Hooks a)
Usage: 1)
The hook must be selected to work with the cable, the chain or the strap used in the lifting device.
2)
The hook needs to be made according to correct size so that it can hold the load securely.
b)
c)
Types: 1)
There are many types of hooks available from multiple manufacturers.
2)
Hooks must be made of forged steel and equipped with safety latches.
Capacity: 1)
Hooks are rated at maximum capacity for vertical pulls and reduces capacity when
Safety Guidelines
side loaded. 2)
安 全 准 则
The limit lifting capacity for a hook used in the manner for which it is intended must be equal to or exceed the rated load of the chain, the wire rope, or other suspension member to which it is attached.
3)
The designed limit lifting capacity means the limit weight put on the hook bearing point from the load.
4)
The manufacturer’s identification must be forged or die stamped on a low-stress and non-wearing area of the hook.
d)
Safe operation: 1)
Do not side load hooks.
2)
Force on the safety latch can cause failure of hooks.
3.3.2 Rigging introduction Care and attention to the rigging is a fundamental part of the operation safety: a)
Perform frequent and periodic inspections of the rigging hardware, wire rope, and slings.
b)
A written equipment record must be kept monthly. Reviewing the history can provide vital information, for example, reveal a faster wear that can be attributed to defects in the crane.
c)
Remove from service rigging equipment that has been damaged.
d)
Inspect rigging accessories before each shift.
e)
Determine the weight of the load and choose appropriate equipment.
CAUTION The strength and the integrity of the rigging hardware is another fundamental part of the safe lifting operations. To maintain rigging hardware and its components, frequent and periodic inspections are required.
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ZCC1100H Crawler Crane
