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Unread 04-02-2017, 19:39
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Re: Climb Stopping Mechanism

Quote:
Originally Posted by Ken Streeter View Post
Just FYI, I agree with your point that teams need to have a solution to the problem.

However, in this circumstance, the force applied on the rope after hitting the stop at the top isn't "the full power of the winch + the weight of the robot pulling on the rope..."

Rather, it's the maximum of the two. (Which is likely to be the "at stall" torque from the winch.)
Hmmmm.... Not sure if I understand your why here.

As the robot climbs the rope the weight of the robot causes tension on the rope equal to the weight of the robot ... Agreed

But once the robot encounters the hard stop at the Davit, it will give an upward force on the davit equal to the torque of the winch. Since every action produces an equal and opposite reaction the Davit will push down on the robot equal to the torque of the winch. This will be added to the force of gravity on the robot, thus the rope will see full force of the winch + weight of the robot.

Please show me where I am wrong.
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