BALLS!

[MasterBlaster]

I think he's discombobalated a bit on that.

 

[lumberjack]

I'm fairly certain they are.

 

[sotc]

ive heard of the ones in the boom sheave, but not on the ball. i usually single line with a round ball. on occasion we 2 part with a similar setup as johns second ball

 

[No_Bivy]

John... Are you talking about using a pad lock to replace the clevis pin? or the clevis itself?

yep...

 

[Mr. Sir]

This is the gadget I'm talking about. On a two or four part line, it's attached near the boom. On a singfle line, its between the ball and cable. It gives the operator a digital readout of the load weight.

http://images.google.com/imgres?img...q=crane+wireless+load+sensor&gbv=2&hl=en&sa=G

 

[No_Bivy]

cool...how is that different from how a crane already knows the weight.....I mean where does normallly get the info?

 

[Mr. Sir]

Without that, you don't know the weight.

 

[No_Bivy]

the cranes I use dont have that but they know the weight

 

[MasterBlaster]

cool...how is that different from how a crane already knows the weight.....I mean where does normallly get the info?

From charts and calculations, and it's an estimate.

 

[No_Bivy]

but there is a digital readout of what it weighs in the cab? so that ain't no estimate

 

[BostonBull]

Regular cranes have load scales, that read out every 100lbs. That operation you have shown is an aftermarket scale, that most likely will readout exact weights to the pound.

 

[sotc]

http://www.tciscales.com/products/8/Pin_Load_Cells

 

[gf beranek]

I've never noticed any cranes around here with a bullet ball. I'm only guessing that the taper at the top would have something to do with the anti-two-blocking interface on the boom tip.

or is it something else?

 

[Mr. Sir]

Cranes have a chart that tells the operator what the maximum safe load is at any given boom angle and reach. But that does not tell him what the actual load weighs. A load sensor gives a digital readout in the cab of the exact weight of each load. When I'm doing a removal, the operator can estimate the weight of each pick and apply that much force (using the load sensor readout) as I'm cutting, so that as I finish the cut the piece will just float away without either pinching the saw (not enough lift) or flying haphazardly off the cut (too much lift).

By knowing precisely the weight of every piece I cut, I've gotten much better over the years at estimating the weights before I cut them. This makes for a much safer operation and fewer surprises.

 

[No_Bivy]

I've never noticed any cranes around here with a bullet ball. I'm only guessing that the taper at the top would have something to do with the anti-two-blocking interface on the boom tip.

or is it something else?

dunno....maybe just a Tidano thing