mini tracked wheelbarrow or dumper In the USA?

[boggen]

quick diagram, for single joystick control for steering. i had to draw it out to figure out what you were saying.



your notation of 3pt hitch, idea of free standing cranes came to mind, for main beam, and then counter weight on opposite end. be interesting if you could adjust distance of were weight was on the fly with wireless remote, or perhaps pulling a pin and sliding a pipe in and out to adjust counter weight position for an implement. further counter weight was away from main center pole more counter balance weight it would achieve. closer the counter weight was to main center pole less counter balance weight it would produce.

single cylinder to raise / lower lower lift arms on 3pt hitch. no way to adjust "angle" or "tilt" when thinking of TNT (top & tilt) for a 3pt hitch. perhaps if you went with 2 individual cylinders 1 for each lift arm. you could have TNT.



if you go with 360 spin. how are you going to keep from tangling the hyd hoses? and pinching them and tearing them apart?

will there be a "stop" be welded to the tracked buggy frame. and then a "tab" welded to the shaft extending upwards. so you only get 359 degree spin. and not a fully 360 degree spin?



or going to something more complex. like you might find on a tracked excavator. were you can keep spinning around and around and around while the tracks stay put?

instead of the trailer hub, below diagram. was more along thoughts of 2 thicker metal plates. were bottom plate attached to tracked buggy and top plate (mirror copy of bottom plate just flipped upside down) attached to main pole that went upwards. the top plate would spin freely over bottom plate. and the groves would allow hyd oil to pass through the plates. regardless of spinning.


or are you going to skip the 360 turn completely for the center pole..(like your current tracked robot) and go for a more simpler design? and if you get into tight spot, just raise 3pt hitch implement and then cause one track to reverse while other track goes forward?

 

[superfly611]

i just want to get it done soon but i know i have to be patient.

 

[superfly611]

I was thinking of the two hitches one of the front and one in the back that way I can mount a counterweight on either side depending upon where the implement is.

If I'm following your chart correctly for the hydraulic motors that is what I want to do (Full Right stick would give you the right track going in reverse and the left track going forward and vice versa). But how would I accomplish this going from a remote control to some kind of controller controlling the hydraulic motors.

I didn't get the show might that the info you gave me but he should be home today and I'll show him. Thanks again.

 

[crbr]

Thanks for the pictures

 

[boggen]

did some googling just to see if i could find something... and came up with following search phrase for google ""hydraulic valve proportional open center 4 way Electro"" to find valves that i assume you would want for the 2 motors for the tracks.

look for something that has "spring to center" (no electricity is applied) valve returns to center. much like a regular valve/lever on many tractors. in description, double check that it states along the lines of, the more volts that are applied to valve the more the valve opens in a given direction.

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no help on the physical "wireless remote controller" or receiver on the tracked buggy, or the actual controller between receiver and things.

you might try submitting question to a RC air plane forum or robot forum. RC = remote control

 

[superfly611]

thanks i think this is exactly what my dad is looking for. i wasn't sure how to google it but that really helps.
thanks again.

 

[superfly611]

Okay well my dad's retirement wasn't that long before he got another job. He is working more at this job than he did before. I'm not sure how well my project is going to work out now. Does anyone have any idea where I can get a used remote-controlled lawnmower? Not one of the cheaply made ones that they sell on alibaba. I am looking for a heavy-duty one such as the ones I've described. Something much better than the evatech ones too. I know it's sort of a specialized or odd item especially for the US but I'm at a loss. I know my dad can do a great job building a custom one but who knows when it will get done. I really don't want buy a bobcat because it's so big and heavy I can't use it around the house for cutting grass. Here are the ones I've found:
ENERGREEN - a new way of working | Robogreen | Energreen | boom mower, mowers, bracci decespugliatori, trinciasarmenti a bracci
allMcConnel
slope mower on rubber tracks, hill mower
Tiger Boom Mowers not my favorite because its not a flail mower and it doesnt have the mower up front like the other two. i could make other attachments like a snowblower or plow.
http://www.slopemowing.com/index.html I really like the wheeled model on this site but if you look at the way the mower now is its rigid not floating. Other than that it looks great.

That's about it for remote control mowers that I found. They are all overseas too unfortunately. If anyone knows of any used models anywhere in the states please contact me.

I know my dad has a lot on his plate he's trying to get his new job up to speed with with the regulations they have to comply with so he's Pretty busy. I'll wait till the inspection is done that needs to be done then see how long he thinks it might take him to build it. I'll post any progress if any is made. Thanks for the help so far especially you boggen.

 

[boggen]

hhmmm YA! LARGEST V8 RC SKID LOADER HIGH RPM - YouTube put a hitch on the back to pull the mower you currently have. *though you might not have any lawn after initial couple hours of playing*. or swap out bucket for skid steer front mount attachments.

Loader Radio Remote Control System - Bobcat Company optional setup for some of there machines....
Robotic Controller Kit | QinetiQ North America another bob cat remote kit....

google "RC mower" or "remote control mower" generally just brings back push lawn mowers that are self propelled and setup for remote control. with a touch of redoing things for better remote control. i couple of them i saw a generic snow plow blade. i had to wonder how in the world such a light weight machine with almost zero traction could push snow though.

google "RC slope mower" brings back a bunch of "tracked" mowers better geared for slopes and larger size engines and more power. though everything i saw seemed very one duty machine. and no way for multi attachments. i suppose one could easily modify a generic snow plow and swap out the mower for a plow. and hopefully have enough weight along with tracks to push snow.

google "remote control skid steer" seemed to bring back bigger sized machines, that could allow for multi attachments. thinking about it, i would imagine, there are good amount more skid steers out there, that have electronic joysticks, that operate the actual valves back behind them near engine. and swapping out the electronic joysticks to wireless remote control. might be more achievable vs other things out there.

tried "robotic tractor" as a google search clicked over on "images" and getting a large amount of results of different machines, perhaps more than "remote control skid steer" keywords.

most other keyword searches i have tried only return small scale for lack of better statement hydraulic toys (excavators, earth moving toys, etc...) and not actual larger size machines. exception "remote control plow" brought back a middle buster attachment for a tracked mowing machine.

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power house mini skid steer for sale - YouTube different way of dealing with lifting attachments vs 3pt hitch, to other...

Remote Control Mini Skid Steer Project - YouTube ted from EverythingAttachments.com (dealer here on TBN) mini skid steer in idea, and setup for remote control. might be worth you contacting them. they might be able to order the valves, and wireless remote stuff, and in idea make a kit for ya. to use on something.

Hydraulic RC Excavator. The first tests 3 - YouTube hydraulic excavator video, mentions some sort of "kit" you might be able to get.

www.machinerytrader.com and search for "remote control" in advanced search. returned a good amount of "compaction machines" with drum toothed wheels. that had wireless remotes for them.

Kanga Loaders Mini Loaders Petrol Diesel Remote Control Earthmoving Mini Loaders not really meant for buying but perhaps some ideas for a DIY thing

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remote control forums, that might help ya, narrow down what transmitter / receiver / remote control to get. and how to set things up.

RC Discuss

http://www.rcuniverse.com/forum/default.asp

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both seem to have little bit of everything for robots. you might find actual items that you might want for the DIY machine.
The Robot MarketPlace & Team Nightmare - BattleBots & Combat Robotics Information
The Robot MarketPlace & Team Nightmare - BattleBots & Combat Robotics Information

 

[boggen]

some random thoughts dealing with ground speed....for DIY machine. in order to obtain slow speed for mowing and working a snow plow or like. to a high speed for traveling speed between place to place....

original thought was....
gas engine connected to ->
hyd pump ->
proportional valves ->
positive displacement pump ->
drive sprocket on tracks ->
tracks

second thought was.... adding in a second hyd pump. and using a solenoid valve and check valve, and tee into between hyd pump and proportional valves. so when you wanted higher ground speed. you could push a button on wireless remote control. to open up the solenoid valve. and get twice the amount of GPM. than what a single hyd pump would give. to move the positive displacement pumps that much faster or get them to spin that much faster...

next thought was some sort of 2 speed transmission or pump, which lead me to... hydrostatic transmission. or rather make that 2 hydrostatic transmissions. and instead of a hyd motor for each track, go with a hydro static transmission for each track. see Hydrostatic transmissions | Hydraulics content from Hydraulics and Pneumatics thoughts are more along the line of torque and speed conversions that a hydrostatic transmission would provide. and use of a small servo motor or actuator used to change lever position. between fully forward, to fully reverse. other words instead of a HST pedal or lever on a riding lawn mower you move forward or reverse. small little servo motor or actuator would adjust lever. cost of 2 hyd motors, plus 2 hyd proportional valves. vs 2 hydrostatic transmissions and a couple small servo motors. *shrugs*

gas engine connected to ->
hyd pump ->
hydrostatic transmissions with a small servo motor or like to adjust forward / reverse->
drive sprocket on tracks ->
tracks

 

[superfly611]

This is a lot of good info! I can't remember if I mentioned it but I did demo the Bobcat. It was really good and felt great to be able to run a piece of equipment again. I just wish it didn't weigh so much. I buried it within the first half-hour cutting some grass in a little bit of the wet area.

I had a question with regards to the hydrostatic transmission. With the ones that I have for my front commercial mowers there would be a differential for the drive wheels. I would not be able to take a two speed hydrostatic transmission and apply for both tracks. Wouldn't it try to drive just one track at a time Due to the differential? Hopefully you understand what I am trying to say?

I'm going to try to see if I can demo some sort of mini skid steer and I'll have my dad just run it by walking behind it. I'll take it into some of the areas that I will be going in and see if it gets stuck or not or if it scuffs up the lawn.

there is this guy On eBay trying to sell that one remote-controlled lawnmower the lx1000 for more than a new one. I asked him about it but he never responded. I asked him why he was trying to sell it for the same price as a new one. It's back up on eBay but for $1000 less. It's still not cheap enough.