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Ri3D 2022 | Successful Climber
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- เผยแพร่เมื่อ 12 ม.ค. 2022
- We finally were able to test our climber on some hangars. We ran into some major issues with chain stretching and skipping in addition to gearbox mounting issues. In the end were able to climb 3 times consecutively and would be able to continue to the traversal rung if we had it built.
These climbers are quite tricky and we recommend teams leave ample time for testing and tuning, as a lot of parts can break.
CAD INFO:
www.chiefdelph...
![CAMPปลิ้น | EP.79[2/2] มานั่งฮ้านกินข้าวนำกันเด้ออ้ายยย](http://i.ytimg.com/vi/pHIS_Sdy8P8/mqdefault.jpg)
In the first few attempts we were unable to release the rotating arm hooks. We altered their shapes to make it easier for them to slip off
Is your cad model the correct hook shape?
no. we altered them to be much thicker. on the arm ones we cut off quite a bit to make it easier to remove when we transfer to the next rung
Awesome climb! I bet you could do multiple bars like that. Also that Programmer King, what a hunk!
This is absolute amazing!
Absolutely*
Climbing turned out great! I was wondering if y’all are planning to release the CAD for the mechanism though?
yes. i will try and release it today
hey! this climber is insane!! i just a have one question though. what’s the purpose of waiting before extending the second arm/tilting backwards? once again, a really cool design overall!!
no purpose at all. we’re just manually changing the power of the arms at each step. once the different powers are coded, it should be a pretty fast climb
Nice Intake
I assume this would work for the traversal bar as well, right? The slope and distance from the high bar to the traversal bar is the same as the mid bar to the high bar, and it seems like at 3:18 you're in the same position as 2:57, just on the high bar instead.
exactly! there is no reason we shouldn’t be able to make it all the way to the traversal rung. the only limiting factor would be time. but with fine tuning a routine, we think this climb can be done really fast
@@zoukeepers2431 Nice, I think my high school's FRC team is going for this design, so I'm glad that it works well.
good luck with it! be sure to address the chain problem and gearbox mounting problem as you generate your design
@@zoukeepers2431 Thanks, but not my team. I'm currently in middle school and finished my last FTC season about a month ago (Michigan) so I'm just interested in my brother's team. Also it's probably not the exact same design, but it's an elevator and pivot just like this, just probably not the same exact design.
Hello guys, I was wondering how tall is the mecanism ? Because at 2:00 the robot touche the third floor and he is nearly on the ground, so i may mesure more than 1.67meters
our rungs are not at the correct height. the max height of the robot when extended is approximately 65.6”
@@zoukeepers2431 ok thanks for the answer :)
Chain doesn't stretch unless it is overloaded. Chain rollers wear, but you didn't use it long enough to wear. So your brackets moved or deformed or the structure deformed, but consult chain manufacturers, "chain stretch" is a myth.
how many inches of overlap was there between your stages?
Does the robot break the rule about extending past the footprint when it tips?
Nope. Everything is within 16” of frame perimeter
Can you explain what is the purpose of this machine? Where it can be use for?
this is for a robotics competition called FIRST Robotics
@@zoukeepers2431 Ok thanks.
How does it rotate the entire robot backwards?
the arms that rotate. when they’re hooked on, we rotate them. but bc they are bearing the weight of the robot and the chassis is suspended, the robot is what rotates around the arms
@@zoukeepers2431 what motor and gear ratio did you use to accomplish that?
two redlines geared 100:1
@@zoukeepers2431 Just saw this notification. We are using a design that is heavily influenced by your's, so thank you. We are also using 100:1, on falcons.
@@larserickson9110 Falcons run about 1/3 the RPM of redlines and have more than double the power. So divide 100:1 by 6 and So about 15:1 would be ballpark equivalent.
What’s the rationale for the 8 wheel drive as opposed to a 6?
we had just built this chassis ahead of time so we didn’t know what the field was like. for this years game, 6 wheel drive is what i would personally go for
What mechanism pulls the robot up?
the elevator which is driven by a chain
Did your robot fit within the 5'6" height limit while climbing?
yes!
@@zoukeepers2431 When you tilt your robot back to extend your two arms to grab the high bar, I'm not sure you are within the 16 in restriction of objects outside your robot chassis. It was hard from the angle I saw but nevertheless, amazing work in such short time.
we are in frame perimeter. because the elevator tilts with the chassis, it is always within frame perimeter no matter how high it is extended. the arms stay within 16” of frame perimeter even when folded completely forward. they can, however, extend outside 16” of frame perimeter if rotated all the way back. but we never need them to even rotate backwards outside of frame perimeter