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Here is my hanger redesign! I didn't like the look of the old hanger, it looked way too bulky with the round tube structure and the piston-like extenders, nor did I like the system for moving the struts in-out with that chain driven sprocket and screw system. It was altogether over-designed, so I did away with all of that and went with a simpler system with flat, perforated arms that have just a little bit of taper. Now the whole thing looks a LOT lighter. It also looks a lot better, going with the industrial theme of the external spaces in the A.R.C.
As for adjusting the arms, each joint has a captive locking pin on one side and a series of holes on the other side, similar to the way some exercise equipment works. The way, you pull the pin out to unlock it, move the limb and release the pin so it falls through one of the holes and locks the joint in place. The hanger no longer has any ability to adjust itself, instead the pins are shaped so the robot claws can easily grasp them. The robot arms will need to do all the adjusting before sending the hanger to its designated inmate.
I also made the central leg-securing strut foldable so the hanger can be used without anything near the inmate's legs, should leg restraint be unnecessary.
The pivot point is at the tip of the triangle shown above (I haven't yet designed the truck or mount). The whole hanger will be able to rock back and forth, and the limbs of the hanger can be adjusted to change the center of gravity such that the inmate is leaning slightly backwards with their legs slightly in front of them, for a more comfortable almost-sitting position without the crushing pressure on your clavicles that comes with being suspended feet-back.
This image and an additional animation showing some of the different configurations of the device available on Patreon here:
https://www.patreon.com/posts/29349013
As for adjusting the arms, each joint has a captive locking pin on one side and a series of holes on the other side, similar to the way some exercise equipment works. The way, you pull the pin out to unlock it, move the limb and release the pin so it falls through one of the holes and locks the joint in place. The hanger no longer has any ability to adjust itself, instead the pins are shaped so the robot claws can easily grasp them. The robot arms will need to do all the adjusting before sending the hanger to its designated inmate.
I also made the central leg-securing strut foldable so the hanger can be used without anything near the inmate's legs, should leg restraint be unnecessary.
The pivot point is at the tip of the triangle shown above (I haven't yet designed the truck or mount). The whole hanger will be able to rock back and forth, and the limbs of the hanger can be adjusted to change the center of gravity such that the inmate is leaning slightly backwards with their legs slightly in front of them, for a more comfortable almost-sitting position without the crushing pressure on your clavicles that comes with being suspended feet-back.
This image and an additional animation showing some of the different configurations of the device available on Patreon here:https://www.patreon.com/posts/29349013
Category All / All
Species Unspecified / Any
Size 900 x 805px
File Size 239.9 kB
Listed in Folders
It looks unbalanced to me. If you consider a humanoid body's center of gravity is in the hips (Slightly higher in males than females), the center of gravity should be directly under the suspension point, or it's going to apply torque on the suspension point as gravity seeks to align them. And if most of the load is going to be supported through the shoulders, You would try to design a straight connection from the suspension point to the shoulder rings. A heavy subject is going to be stressing those pivots as the weight tries to straighten them.
(Gah, all that stuff from my floor crane training at work is flooding back.)
(Gah, all that stuff from my floor crane training at work is flooding back.)
Maybe you guys are right. I wanted to go for a more lightweight, collapsible design, and the major influence on the design was the look of the rail system from Half Life 2. And my main reason for making it look this way is because I don't want the hanger to dominate the view, or obstruct the passenger much if at all. I also wanted it to be adjustable for different sized inmates, but I think you are right and I have way too many pivot points. This hanger is over designed rather than over engineered, and I'm thinking I might just want to go with a simple fork with hooks on the ends, and leave out the leg thing entirely, since it kind of gets in the way.
Thanks for bringing these points up!
Thanks for bringing these points up!
Well, a certain amount of adjustability might be necessary, but for example, on the upper hooks you're really only talking about shoulder width. I can think of two ways to do that, both with just a horizontal crossbar on the trolley. The hook arms could slide in or out on the crossbar, or they could be on pivots at the end of the bar and average distance apart and swing in or out based on width.
An ankle restraint is still valid, since you don't want the occupant kicking and flailing while in transport. A single arm of some kind terminating in a spreader bar would work.
Of course, that's purely functional, but there is a matter of style.
An ankle restraint is still valid, since you don't want the occupant kicking and flailing while in transport. A single arm of some kind terminating in a spreader bar would work.
Of course, that's purely functional, but there is a matter of style.
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