Vertical Tracks for Forklift

[Mike Marandola]

Originally Posted by GortGortGort

We are using tel-power poles retrieved from dumpster diving .
Call around to electrical company's they toss these everyday .
Love free stuff !
http://www.chiefdelphi.com/media/photos/41182

What is the profile of those? Are they channel, box, or something else?

[redsox11]

We're using 3x3 80-20 with linear slide bearings.

[RonnieS]

We have been using 6063 for years and it works just fine for us. I would love to get 1/16" wall but like others have said, its hard to find here in Michigan. But they sell 1x1" in 1/16" wall...I don't get it.
-Ronnie

[MrRiedemanJACC]

Hmmm, I'm really surprised ALRO doesn't have the 2"x1" x 1/16" . I'll call tomorrow to see if they have any here in Jackson (where they are based - I've been lucky enough to meet Mr. Al Glick through robotics - he's the Al of Alro and a great guy) We have some 2"x1"x1/8" but didn't use it. We were able to get our hands on Rev profile, the v-groove bearings, made our own mounts with the help of a local machine tool builder with a laser cutter, and made our own bushings for the bearings. So that's what we are going with.


So to hijack the thread a bit what is everyone powering their lift(s) with?

We are using a Cim with a 27 -1 versa planetary and a 12 tooth 35 chain sprocket .

No brake yet...

[asid61]

Originally Posted by MrRiedemanJACC

So to hijack the thread a bit what is everyone powering their lift(s) with?

We are using a Cim with a 27 -1 versa planetary and a 12 tooth 35 chain sprocket .

No brake yet...

RS-775 18v right now, as the power rating on it is enormous. We still need a brake though.

[Gregor]

Originally Posted by MrRiedemanJACC

So to hijack the thread a bit what is everyone powering their lift(s) with?

We are using a Cim with a 27 -1 versa planetary and a 12 tooth 35 chain sprocket .

No brake yet...

1-2 Cims through a Vex Double Reduction gearbox. 40:12 * 40:14 * 22:15 chain reduction, and a disk brake. The "pulley" is a 15t 35 chain sprocket.

[Jared]

Originally Posted by MrRiedemanJACC

So to hijack the thread a bit what is everyone powering their lift(s) with?

We are using a Cim with a 27 -1 versa planetary and a 12 tooth 35 chain sprocket .

No brake yet...

We're using two 775's (18Team2383.com/blog) with a 4 to 1 versa planetary with dual motor input, then a 10:1 worm reduction driving a 22 tooth sprocket (#25 chain) for the lift.

We have no need for a brake because our worm gearbox.

[BBray_T1296]

Originally Posted by asid61

RS-775 18v right now, as the power rating on it is enormous. We still need a brake though.

Are you looking at how the RS-775-18 runs on actual 18v? or a specification sheet detailing the performance at our 12v?

[PaulEleven]

MiniCIM-64:1 banebots bb220-15T #35 double sprocket
Calculation looks really good

[PaulEleven]

Would anyone be kind enough to explain the necessity of brakes? Alternatives? Rookie here....

[BBray_T1296]

Originally Posted by PaulEleven

Would anyone be kind enough to explain the necessity of brakes? Alternatives? Rookie here....

So when your elevator is in a lifted position, you aren't simply supplying continuous electric current to hold it off the ground, but instead mechanically hindering gravity. Saves battery.

[Mike Marandola]

Originally Posted by BBray_T1296

Are you looking at how the RS-775-18 runs on actual 18v? or a specification sheet detailing the performance at our 12v?

After seeing many of Anand's posts I am confident he is looking at the specs @ 12v. Even at 12v the RS775-18(273W) has much more power than the RS775-12(83W).

[PaulEleven]

Originally Posted by BBray_T1296

So when your elevator is in a lifted position, you aren't simply supplying continuous electric current to hold it off the ground, but instead mechanically hindering gravity. Saves battery.

So it's not for when it comes crashing down.
Do you think the 64:1 planetary would be able to hold the load in the gears?
Also, what happens if say the lift is at the topmost position and the motor is still running? I was thinking limit switch both top and bottom but just saying would it destroy the gearbox or whatnot?

[steelerborn]

We wanted to not rely on Vexpro or Andymark for the elevator parts, and made our own system using only mcmcastercarr parts.

It rides on a 2x1 tube and uses UHMW rollers and plates.
It is very smooth and very easy to slide and has no wiggle.
We should be powering it this weekend.

As for reductions we are using a cim going to a 10:1 planetary gearbox, then a 6.5:1 reduction using the single stage clamping gearbox from vex. We are having two of these that share a shaft, so 2 cims going through a 65:1 overall reduction.

We are going to see the system and determine if we need a brake.

[donkehote]

Were using 2x1 VersaFrame for our vertical Tracks. Skateboard wheel bearings mounted to a carriage roll on the rail to provide vertical movement with no play in other directions.

Our lift is powered by 2 Cims in an 8.45:1 Toughbox Mini with a 15 tooth 35 chain sprocket.