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pic: Team 319 - Big Bad Bob's Lift System
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Re: pic: Team 319 - Big Bad Bob's Lift System
Do you expect any trouble with your center of gravity if only one "wing" is occupied by a robot when you raise up? Basically, if only one side is loaded, you might tip over.
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Re: pic: Team 319 - Big Bad Bob's Lift System
If you look on the left wing, almost hidden by the table, there's an outrigger piston that fire's with the other 4. We figured if there's only one robot, they'll get on that side, problem solved. Oh yeah, we cruched the numbers, and we theoretically have 700+ pounds of lifting force.
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Re: pic: Team 319 - Big Bad Bob's Lift System
thats a lot of pneumatics.......how long does it take you to fully complete a lift?
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Re: pic: Team 319 - Big Bad Bob's Lift System
We are using two of the same 2" cylinders. However, due to the tank restrictions, we can only deploy one at a time. How are you planning on using as many as you have at the same time?
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Re: pic: Team 319 - Big Bad Bob's Lift System
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P.S. We haven't done a complete two robot lift yet, but it shouldn't matter. The pneumatic solenoids require power to switch in and to swith out, thus if we push the "up" button even a millisecond before the end of the match, it will still go up. P.P.S. Our lift platforms and the feet we put on our pneumatics are removable. So, if there is a robot in our alliance that can lift better than us, we just remove those parts and we have almost 2 inches of clearance. |
Re: pic: Team 319 - Big Bad Bob's Lift System
That's cool!!!!
Good idea to lower the pressure. We found that the 2" pistons only dropped the air pressure by 18 pounds when actuated. We are able to lift 200 pounds on each ramp using just one piston. |
Re: pic: Team 319 - Big Bad Bob's Lift System
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Is there something I'm missing? |
Re: pic: Team 319 - Big Bad Bob's Lift System
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Re: pic: Team 319 - Big Bad Bob's Lift System
hey u guys i have a question about the arm. if the arm is stored just like in the picture and there is a pneumatics cylinder on the ends of the wings (also like in the picture)... when the wings are stored how does the arm get its full range of motion?
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Re: pic: Team 319 - Big Bad Bob's Lift System
clever idea with the pneumatic distribution, hope it works well for you. Also great idea to make them detachable, we might have to adapt that to our robot:p
not trying to cause any fights, but lil lavery try and be more supportive of teams.. i read your posts all over the place and you are constantly trying to figure out why things arent going to work... this is FIRST, we are putting innovative thinking to the test, ive seen some strange ideas become some of the best robots. keep posting tho, just be aware of what your saying.:D |
Re: pic: Team 319 - Big Bad Bob's Lift System
I'd rather be warned than have a system fail, but people generally tend to know what they are doing.
Great idea, I like the fact that it can be deployed 1 second before the match ends... could very well come in handy!!! :yikes: |
Re: pic: Team 319 - Big Bad Bob's Lift System
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Re: pic: Team 319 - Big Bad Bob's Lift System
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In this case though, 30 psi wouldn't have had enough force (as it was stated they may be using), but the 60psi they later said they were using generated plenty of force. Luckily here, there was no issue. :) Back on topic. What kind of material are you going to put on top of the "wings" and what method are you using to deploy them? |
Re: pic: Team 319 - Big Bad Bob's Lift System
We have expanded aluminum going on top of the wings. But it was too heavy so we cut a series of diamond patterns out of it, making it perforated expanded aluminium. The platforms fall on their own, so we just pull a pin with a servo.
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