1:14 RC Tracked Conveyor

[Blender]

A couple years ago a local guy built a really nice trommel. Only issue is the feed is too tall for most machines to load on flat ground. This device will solve that. Will pull double duty as being able to deposit shredded rubber into 5 gallon buckets to clean up at the end of events. Ideally a machine that can be setup in the morning and let run unattended all day.

Based on Terex, but will be between sizes with functional differences to work in small scale. Not a true replica.




Drive belt has been the key part. Bruder's is really nice with cups for steep angles, but too small. Spliced rubber sheet looks great and is super thin, but is never true (when i build it). Megadyne T150 is perfect, but they never pointed me to a distributor in the US. Tried several custom belts from Misumi until i found the right one. Lots of width options, thin and has a woven texture for some grip. Only bummer is it's green. Built a simple fixture to test belts. Rollers are 0.75" 19mm dia aluminum on 8mm shafts. Aquarium gravel transports best at less than 20 degree incline. Granulated rubber appears to tolerate up to 27.5 deg without tumbling. Good news for a short conveyor that still has enough vertical reach. This is much steeper than the real machines




Some details

• Tracks and drive is from Double E Volvo 160 excavator. Temped to use the gearbox too
• Hydraulic cylinders from Magom
• Valves are Lesu 4 spool i have on hand.
• Pump: Scaleart tiny pump ordered to try out. Otherwise i'll get another Leimbach since they are a sure thing.
• Hydraulic functions are: conveyor height, conveyor fold, rear feet and hopper discharge sluice gate.
• DC gearmotors for feeder and conveyor
• runs on 3S 5000 mah lipo to be common to my trucks. External strobe light will act as low voltage warning since transmitter won't always be connected to receive telemetry data
• low hopper <7 in from ground to be fed with modest sized wheel loaders (MCL8), but wide enough for a full bucket from something larger (wedico Cat 966G) or excavator of any size
• Construction will be almost entirely stainless steel sheet. Trying to minimize machined parts for simplicity
• When folded must fit into my existing case geometry.
  

Already confirmed i can alter the failsafe setting of the receiver inside to hold speed of both conveyors if/when radio signal is lost. External power switch will keep things mostly safe.



Still a ton to do before i can start on the physical build. Focus will be on the hopper/feeder to verify is works.