Dan, we have an inexpensive tilt leveler that works great with sit down rider forklifts. Actually we sell two models, but the Accutilt is the best and easiest to use. You can hit our web site by typing in Forklift Training Systems into the Forklift Action search or by doing the same on Google. On our home page it is listed under most popular items. I am not trying to push are products on the formum but you asked so I wanted to mention it. They run $150 and a video on how they work is there for the viewing.

there are even magnetic/gravity protractors that will stick to the mast to show "the angle of the dangle"... cost less than 50 dollars for a good one.
it's what real forklift techs use to be sure you have the mast straight up and down, say, when adjusting chain length....

i could have sworn mitsu/cat IC tier 2 & 3 trucks have a tilt leveler option too

If you are inventive, produce a gizmo for the sit-down forklifts so my students can determine the tilt of the mast when the mast is elevated. They cannot seem to jude the tilt angle, and end up having their forktips yank the skid off the rackiing.

I know certain reach trucks have it, but why not sit-downs.

Just a suggestion

Right now the alarm sounds the whole time the forks are above free lift (raising or lowering or reaching). But a lot of time and thought was used to research the best way to warn other associates without driving the operator crazy.

The audible was mounted away from the operator. Five of the six sides of the audible was insulated in sound retardant material. This was very pleasing to the operators. We ran a demo on five units for a week (24/7), and received excellent reports from both the operators and co-workers.

I do agree with both of you, there will be some who will try to "modify" the system. But like all other parts of the lifts, this would be added to the daily check list. And of course the possibility of termination SHOULD deter the desire to "modify" somewhat.

What about the idea of using a photo cell on the load beams, that would illuminate a stop light, strobe or similar to warn associates? This would be without noise, and could be a alternative.

Thanks again for you input.


Rusty

The thing is, that there is no other way to warn. Visual signal or alarm would not be seen. Speed limits in this case would be useless, since the lifts are not moving while load is above free lift.

Just getting some ideas here. But your comments are greatly needed and appreciated.

Thanks,

Rusty

I have to agree that audible alarms have a very limited value, as the more alarms go off, less people listen to them.
as far as "prior art" goes, there are plenty of units running around with alarms and speed limits at height, this is nothing new.

i believe any warning device is a a good one
perhaps you should have 2 tones
one for lifting one for lowering
add a 3rd for reach trucks

i think ive seen lower alarms before but not sure

i have a feeling though in the end operators will disable it anyway "cause its annoying"