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Grappling hook?
Is it possible to have a hook shoot up at an angle with strong rope attached and latch on to the tower (assuming its in the height limits). then is it possible to reel the rope in?
This is just an idea our team has had and im wondering if it can be accomplished. |
Re: Grappling hook?
The only problem I would see is with the entanglement of robots or being hazardous to people. Rules <R03> to <R06> seem to say that it is essentially too dangerous to do so, and understandably so. I can only imagine a grappling hook shooting the wrong way and ramming into players or refs or destroying the field... not so great. Good idea though!
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Re: Grappling hook?
Yeah that was one of our concerns, and i doubt we will be using the grappling hook idea. But would it be possible to shoot the grappling hook out or reel the rope in and lift a 120 pound robot in the first place?
I want to know weather or not we should consider it as a plausible idea. |
Re: Grappling hook?
From:
http://www.chiefdelphi.com/forums/ne...reply&p=897181 Quote:
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Re: Grappling hook?
With the right material, I would say that that wouldn't be a problem at all. There are many ways to lessen the strain, and I think it would be quite easily possible to engineer a way, be it pulleys or a fancy combination of motors to use a grappling hook to hang from the bar, and even great in the respect of not needing power while removing the robot. Again, I see the main concern as safety, and I think that will be the deciding factor.
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Re: Grappling hook?
We thought of this exact thing as well last night. Though we may have an idea on how to control it.
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Re: Grappling hook?
I don't think this is possible as I think it's likely that you would exceed your vertical allowance. The bars are 84'' high your maximum is 90'' so there's only 6 inches of leeway for your shot to fly over the bar and grapple. Also if you happen to miss you would almost surely exceed your horizontal allowance. They teased us with the grapple bot in the kickoff video :( .
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Re: Grappling hook?
I saw several bots hang in 04 using hooks but the all had some type of arm extend up with hook on end to catch the bar and the hook and cable were velcroed so they would release from the arm and winch up the bots. Only purpose of the arm was to place the hook.
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Re: Grappling hook?
make sure the cable atached to your grapple is shorter than what the max is.
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Re: Grappling hook?
There are ways of using cables without "shooting" them up there. A shot is also inaccurate, dangerous, and possibly could go over the height limit... Try and think of more controlled ways to have a hook go up... you're on the right track with cables...
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Re: Grappling hook?
I think our team is actually going with a scissor lift mechanism with hooks on the top. we want to be able to go under the tunnel. I just thought the grappling hook was a neat idea for discussion, and im from what i read its possible and legal if it doesn't go outside the dimensions.
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Re: Grappling hook?
we decided to opt out of the hook because the max hight during FInal Configuration is 90 in and the towers height is 84 in so the hook only has 6in to make it over and we didn't want to risk going to high.
<G40> also might say its a no go because of the entanglement issue edit: sry i re-said things others did i didn't notice them until i reread the thread |
Re: Grappling hook?
Of course you can lift a robot using a hook and cable as described. We have done it. There will some risk involved this year...
<G31> BALL RETURN and RETURN BARS Protection - ROBOTS may not contact the BALL RETURN or the RETURN BARS (black tape). Violation: PENALTY for inadvertent contact; plus a RED CARD for obviously intentional contact or damaging contact. |
Re: Grappling hook?
Quote:
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Re: Grappling hook?
Quote:
![]() The black pole on the right telescoped out ~15 feet to put the grappling hook over the 10' chin-up bar, and then a window motor (legal then) pulled Red Streak II into the air v-e-r-y s-l-o-w-l-y . |
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