DTSFab.com (Desert, Trail and Sand)
The Machine Shop => Everything Cad => Topic started by: trojan on March 05, 2009, 01:29:46 AM
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http://www.youtube.com/watch?v=tj87n_fc8Pg (http://www.youtube.com/watch?v=tj87n_fc8Pg)
I did this as an exercise in learning solidworks.
Dual steering for maneuvering in tight spaces in you shed.
12v lifting. easy ;)
Could easily lift at different rates allowing you to tilt the buggy at an angle?
The open ends of the lifting platform are so one can attach clamps or fittings to "hold" the buggy.
Height: 210mm folded, 600mm+ open
All comments welcome! (esp constructive criticism)
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That's way cool ;)
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Cool concept but my buggy would squash it! ;D
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Very nice! Now I know where you have been the last two weeks! ;D
Looks very nicely designed. My only question would be how much power will the screws have to exert to get the lift started. When they have the least advantage.
I have used electric window motors to drive mechanisms. They are cheap, 12 volts, have built in overcurrent protection, and you can have a gear laser cut to run off of it. You could have it drive the screw, or directly drive an arm. However this would not be as compact.
How high does the design lift? You have to overcome the droop in the suspension to be able to roll it, but I didn't know if you were going high enough to make maintenance easier.
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Cool concept but my buggy would squash it! ;D
it's "made" from 2x750 kg scissor jack mechanisms... so how?
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eg: http://cgi.ebay.com.au/Electric-Car-Jack-12V-DC-1-5-tonne-lifting-capacity_W0QQitemZ220371549618QQcmdZViewItemQQptZAU_Car_Parts_Accessories?hash=item220371549618&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318
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My only question would be how much power will the screws have to exert to get the lift started. When they have the least advantage.
Very little, they only have to move the lifter. Starts at 200mm and my buggy floor is 230mm at ride height.
How high does the design lift? You have to overcome the droop in the suspension to be able to roll it, but I didn't know if you were going high enough to make maintenance easier.
but of course ;D
675mm (26.5 in)
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I guess that with out a frame of reference it just looked small. 2X 750 Kg should do the trick ,huh. 8)
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fair call Fab ;)
the "deck" is 800x600
steering is accomplished by 2 coradial unis:
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old pic of early version, but it shows the dual steer:
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cool!
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Very nice!
Those Ebay jacks will work great, but will change the design some?
When will it be done.....
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I think the intention was to cannibalize the ebay jacks. Not use them as is.
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Go cart slicks? Why not a utlity tire for off road apps? more GC that way for batteries, etc?
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maybe add a busa to it?
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Very cool item. Just to add to complexity you might see about a way to make it go from four wheel opposing to crab steering (and back).
The only reason I say this is the military used to have issues with four wheel steering trucks. They could pull up to a side dock relativley easy. But upon leaving they would always run the butt end into the dock. Sound wierd but if you research it you will see.
It would be similair with trying to put a buggy near the wall.
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For my final project in college we built a 4-wheel steering car. We used a handle for steering, and when you pushed forward, it was crab steering so the vehicle would go sideways, like to parallel park. In the center, it would steer only the front for conventional steering, and if you pulled back, it would steer 4-wheel opposed for maximum turning radius. The design was very simple to make it work, but it might require drawing a picture to explain how it.
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For my final project in college we built a 4-wheel steering car. We used a handle for steering, and when you pushed forward, it was crab steering so the vehicle would go sideways, like to parallel park. In the center, it would steer only the front for conventional steering, and if you pulled back, it would steer 4-wheel opposed for maximum turning radius. The design was very simple to make it work, but it might require drawing a picture to explain how it.
Minimum maybe?
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Minimum maybe?
Yeah.... What you said.......
Maximum was when you got confused and pushed it the other way, and it was crab walking all over, but wouldn't turn around. ;D ;D ;D
It was a great idea, but I never got used to driving it.
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Most of the wheeled cherry picker type cranes work as you described.I have a bit of time under my belt on those.
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I suggest making the wheels a large as possible.
It will be difficult to move around with small wheels.
Unless the floor is very smooth.
Large wheels will roll easily over imperfections.
I like it.
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Yeah, and either pneumatic tires, or a very hard durometer for rubber/plastic wheels. If you overload a soft rubber wheel, it gets VERY hard to push.
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Go cart slicks? Why not a utlity tire for off road apps? more GC that way for batteries, etc?
the wheels are romantic. the intention is to use a 8" hard polymer type at about 40mm wide. that's what the KPI was set for.
If you go much higher it wont fit easily under my buggy.
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Very cool item. Just to add to complexity you might see about a way to make it go from four wheel opposing to crab steering (and back).
it does both. to crab steer, you would say, move the 'towing arm" to the left and turn the "T-bar" to the right.
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it does both. to crab steer, you would move the 'towing arm" to the left and turn the "T-bar" to the right.
Ahhhhh.... Very nice!!
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it does both. to crab steer, you would say, move the 'towing arm" to the left and turn the "T-bar" to the right.
I agree very nice.
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8" wheels will work great.
The model makes them look small.
This thing is obviously larger than it looks.
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So is there plans out there to make this, or can you buy it?
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Initially I hadn't intended to. I did it as an exercise in learning cad. How keen are you?
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Initially I hadn't intended to. I did it as an exercise in learning cad. How keen are you?
It would be nice cause I have very limited space in the garage to store the buggy. Just fiqured that little sucker would be slick to stick under the buggy and put it away. Why what you have in mind? Also what are the specs on this little rig? How tall will it lift ETC.
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the top is 800x600 but could be any size you like. The height: 210mm down, 600mm+ up
Should handle about 1000kg
I could export the drawings or I could have someone (who has already offered) make you one over there?
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It would be nice cause I have very limited space in the garage to store the buggy. Just fiqured that little sucker would be slick to stick under the buggy and put it away. Why what you have in mind? Also what are the specs on this little rig? How tall will it lift ETC.
Just buy a set of dollys for each wheel. Cheaper,easier and can be used for lots of things.
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Just buy a set of dollys for each wheel. Cheaper,easier and can be used for lots of things.
easily ;)
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Of course the buggy lifter would be very, very ,very COOL!!!
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But of course! ;D
but the dollies are easier cheaper and arguably better in that they are multi use ;)
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But of course! ;D
but the dollies are easier cheaper and arguably better in that they are multi use ;)
That's better!LOL!!!