calculator sheet on rail

[andrea1717]

Hello.
I never deal with automation, but in a few months I've had 4 tanks on rail for internal transport to the workshop.
I made a calculation sheet for the determination of the fundamental dynamic and cinematic parameters and the estimate of the on-trend start transition of bi-linear motor torque.
calculation procedures are classic of applied mechanics
I attach the spreadsheet and the calculation procedures adopted in case it can be convenient to someone and/or for control, since the error is always inappropriate. So I don't guarantee that the calculations are correct.
if then someone had vlos to implement it.. . .
greetings

 

[meccanicamg]

I'd say it's a good job.
Surely it has a little practical parameters and presupposes the indicated and imposed power hypothesis. it would be better to have as a result the power to look for on the catalog.
this because often you take motors with nominal power able to win the performance goes regime and instead the transients are used with the maximum torque curve of the motor. this allows to take small and cheaper engines. in other situations instead you take the motor with nominal power equal to the maximum necessary, so as not to use beyond the nominal.
with the use of inverter or soft start you do not have the bilinear curve that you can have with the direct ignition but you need to program the ramp.
some data is a little far from true as the turning friction of the wheel. the friction between wheel and track can be compatible.
I use regularly for transport in a fairly clean iron and steel environment with load capacity from 5 ton to 120 ton.
Keep in mind that then it is better to have a surplus because if I find a screw on the ground you should not stop the cart.

 

[meccanicamg]

in these days I came across a problem of calculation of a trolley with ac 48v engines. my usual supplier took a chant in his spreadsheet and found myself with double power engines compared to my calculators.

Of course I was worried my excel was crazy. So I decided to try them all.
between the various tests I used the siemens computer the sizer.

setting as a conveyor and inserting all parameters with the acceleration ramp, constant speed and braking ramp we can see more complete the behavior of the engine.

so to that this is a tool to be able to use.

 

[andrea1717]

in these days I came across a problem of calculation of a trolley with ac 48v engines. my usual supplier took a chant in his spreadsheet and found myself with double power engines compared to my calculators.

Of course I was worried my excel was crazy. So I decided to try them all.
between the various tests I used the siemens computer the sizer.

setting as a conveyor and inserting all parameters with the acceleration ramp, constant speed and braking ramp we can see more complete the behavior of the engine.

so to that this is a tool to be able to use.

hi...an online calculator makes it available even the sew eurodrive:

SEW Eurodrive Antriebsauslegung | Drive Selection

www.sew-eurodrive.de

 

[meccanicamg]

hi...an online calculator makes it available even the sew eurodrive:

SEW Eurodrive Antriebsauslegung | Drive Selection

www.sew-eurodrive.de

of course in the German language...bel rop.

 

[meccanicamg]

a nice English computer made by the Japanese qui...with so much written formula.

for other electrical applications such as endless screw, conveyors, lifts etc qui.

 

[andrea1717]

a nice English computer made by the Japanese qui...with so much written formula.

for other electrical applications such as endless screw, conveyors, lifts etc qui.

that of the sew is also in English! up to dx you can change the language