Motor and gearbox protection?

Community General Discussions
1

Hello all and thanks for letting me join.

I have a drive system that should be used on caravans, this is a 12v heavy duty motor drives that propel each caravan wheel individually (slowly) each main motor drive is pushed on to the road tyres using 12v actuators (small planetary gearbox with small 12v motors), these motors have only 2 wires + & - only.

My question how are these small motors and gearboxes protected from being burnt out or gears stripped when the drives have been pushed hard enough on to the road tyres?

Is there a possibility it’s done by a peak amperage momentary cutout of some kind?

Sorry for the obvious naivety of this question, I’m a hands on mechanic type of person but never really looked into specialised electronics.

The actuator motors and gearboxes are 31mm diameter and have a ratio of approx 250:1 with final output of 40rpm if this helps.

2

@Candoo Welcome to the RobotShop Community. A resettable fuse would limit the current, and if you set the value according to the motor’s manual (just beyond peak power), that is certainly one way to try to prevent it from being pushed too far and risk being damaged (the motor would effectively lose power though).