Not producing any torque I hope. If not so, use geared motors.
As already told: DC motors should not be producing torque without rotating.
Maybe a worm gear motor like this.
Worm gearbox usually blocks when motor not driven. You can get larger ones if needed.
yes, we will be creating the whole assembly ourselves, its just the motor that we want to make sure is the right type
Millions of brushed DC gearmotors are used for projects similar to what you describe. They are often called winches in English.
Here is a similar device I made a few years ago. My wife is demoing the use to raise a solder pot.
The last picture is of the 12 volt motor and right angle worm gear connected by gears and chain to the drum that has 1/16 inch cable for a 90 pound capable crane.
I would recommend to the original poster to, if at all feasible, always try to have a backshaft encoder on the DC motor. This way, even though you might be using limit switches to end-stops you'll be able to have some extent to which you can trak the position in real-time, and track the speed. This could be really important in detecting a jamemd mechanism, rather than damaging the structure, or overheating a stalled motor, waiting for an end-stop signal which, for whatever reason, never comes.
If you can put a tiny but well known series resistor in series with the motor (or the supply pin of the H-bridge controlling it), this too is valuable, you can measure the voltage across the known resistance to measure motor current, a current above some certain threshold means the motor is exerting more than the amount of torque you expect it to need to, and therefore also helps indicate a fault before damage can occur.
The OP hasn't mentioned the details of the deployable structure, size, weight... but one might consider the fairly common 37mm gearbox diameter, 6mm D shafted, 12V motor series, with a gearbox set to give RPM ratings in the low tens. Gear down further with 3d printed gears or with smaller winch drums if needed. If a 37mm 10s of RPM 12V motor is too slow find a more powerful motor able to give the same torque but greater speeds.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.