Norsk Standard MFM

NS-EN 474-1 :2006+A3:2013

EN 474-1:2006+A3:2013 (E)

The fixing position of the lifting device(s) shall avoid that the sling is deflected from its vertical load by other machine parts, except when the sling is guided over the back-wall of the bucket (see Figure F.1) or over the rounded shape of sufficient diameter.

Figure E.1 -Sling guidance over the back-wall of the bucket

The lifting device(s) shall be so placed and of such a shape as to avoid the risk of unintentional displacement of the sling.

There shall be no damage to the sling by other parts of the earth-moving machine, e.g. sharp edges.

The lifting device(s) shall be fixed in such a way as to avoid any hazardous area (e.g. squeezing/shearing or rotating parts) for the slinger.

The lifting device(s) shall be so located, that hooking and unhooking is easily possible.

The lifting device(s) shall be so positioned that there is no restriction (e.g. catching) at normal operation of the earth-moving machine, nor at object handling operation.

E.3.2 Design and strength of lifting device(s)

E.3.2.1 Lifting device(s) provided by the machine manufacturer

The lifting device(s) shall be designed to withstand the load that can be applied at any position of the attachment or parts of the boom. This includes a side load or pull, which may occur in practice.

E.3.2.2 Lifting device(s) provided by the attachment (working tool) manufacturer

The lifting device(s) shall have the following capacity:

2,5 times the RLL in the direction of the vertical load (see Figure E.2 a)) without a visible deformation after completion of the test;

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