Rigging standards for Kobelco 7100 100-ton lattice crane

Hi to all,

For a 1” wire rope for both the main hoist and auxiliary hoist, am just wondering:
#1 is there a (manufacturer) recommended minimum turnback length and no of clips/u-bolt?

Actual turnback length is about 16”. Is this sufficient?

Does the general rigging guidelines for 1” wire rope requiring at least 26-inch turnback apply?

#2 the existing clips are installed so they are “straddling the dead end.” Should this be corrected and be the fastened the other way around (bolt on the live end side)? Pls confirm.

#3 the actual no of clips installed is as follows:
- main: 2 sets
- auxiliary: 1 set

Are these sufficient?

Or does the general rigging guidelines for 1” wire rope requiring at least 5-sets (for both main and auxiliary hoists) apply? Or are these sufficient?

The OSHA standard for clips can be remembered by... "NEVER put a saddle on a dead horse..."

U-bolt on the live end will get you an OSHA citation... (if you were in the States)


Although the Becket is doing the holding... The bolt is distorting & weakening the rope strands.

No cable clamps attached to the load line. Only on the back side of the becket.

All your pictures are the wrong way to install.

Nice refresher!

The 26" turnback and 5 cable clamps is probably for if you have no becket at all. The becket will hold all the cable strain, like hosspuller says.

Typical cable "tail" or turnback with a becket is 13 times the cable diameter, so 13" of cable sticking out the backside of the becket would be sufficient on your 1" cable.

The third picture has the line thru the becket the wrong way.
Bob

Bluox said:

The third picture has the line thru the becket the wrong way.
Bob

Click to expand...

Good eye for detail ..