When we built a new house, a two-story house (for the sake of the lake view), we planned for a simple small dumbwaiter from the kitchen to the upper floor. This was with the thought in mind that we are getting older and that we have balconies where we like to eat when the sun shines. Both the carpenter and the electrician said they could fix a simple lift 
. Therefore, we removed a kitchen cabinet, and the carpenter built a lift shaft in MDF in the kitchen. Now they've backed out of the task, and we are left with an unfinished lift . I have looked at other threads here on the forum but haven't found anything useful (if the expression is allowed). Now I wonder if the great expertise on the forum has experience with simple dumbwaiters, built one themselves, or knows where the knowledge can be found. Looking at the market, even the simple lift is expensive and quite large. We were thinking of a box in the lift shaft of about b50 x d30 x h40. The height from the kitchen (lift door to the upper floor (lift door 2) is about 3.6 m. I can handle carpentry fairly well, but machines, technology, and the like, I'm terrible at. If I'm not in the right thread, well, someone can move the topic.
. Therefore, we removed a kitchen cabinet, and the carpenter built a lift shaft in MDF in the kitchen. Now they've backed out of the task, and we are left with an unfinished lift . I have looked at other threads here on the forum but haven't found anything useful (if the expression is allowed). Now I wonder if the great expertise on the forum has experience with simple dumbwaiters, built one themselves, or knows where the knowledge can be found. Looking at the market, even the simple lift is expensive and quite large. We were thinking of a box in the lift shaft of about b50 x d30 x h40. The height from the kitchen (lift door to the upper floor (lift door 2) is about 3.6 m. I can handle carpentry fairly well, but machines, technology, and the like, I'm terrible at. If I'm not in the right thread, well, someone can move the topic.I'm not an elevator expert, but shouldn't it work to install something like this that lifts and lowers your box?
http://www.biltema.se/sv/Bil---MC/Lasta-och-Dra/Elektrisk-vinsch/Elvinsch-12-V-15361/
http://www.biltema.se/sv/Bil---MC/Lasta-och-Dra/Elektrisk-vinsch/Elvinsch-12-V-15361/
Yes, it might be a piece of the puzzle, but from what I understand, various other parts are also needed for the elevator to operate safely. For example, a stop function, i.e., the elevator senses when it has reached the bottom or top, as well as controls so that the elevator itself runs smoothly in the drum. As I said, I'm not good with technology, but thanks for the tip.
It will be difficult to achieve a smooth operation and to avoid getting stuck along the way.
Check how homemade CNC routers are constructed. Fittings for sliding doors might also come in handy.
Check how homemade CNC routers are constructed. Fittings for sliding doors might also come in handy.
Sounds like a really fun project if you lived closer, I would have taken on completing it at cost price.
Can you take some pictures of the shaft?
if you lived closer, I would have taken on completing it at cost price.Can you take some pictures of the shaft?
I have understood that it's not just the lift that needs to work but also the "steering." As mentioned, I'm not technically gifted, but I have thought based on the images available, such as in the UK (dumb waiters), to have some form of rails attached to the elevator shaft, complemented with guide wheels on the elevator body itself that run in the rail. That should work. The finished products I have seen are probably too large for my project. Thanks for the tips but I'd love more suggestions. Anyway, Marive gave an idea that I followed up on. When I googled winches, I discovered that there are also ceiling winches that can lift up to 50 kg. Complemented with guide rails, it might work. It can also be remote-controlled. I appreciate the offer and agree that the distance between Skåne and the Södertälje area is a bit too far—unfortunate. I will try to take some pictures of the shaft and upload them, but as I said, I am not good with technology. http://www.elvinsch.se/kataloger/katalog/details/333/34/vinschar-220v/380v/-annan/tak-vinsch.html
Cool project! The control of the lift can be done simply and cheaply with round pipes, 4 of them, one in each corner.
On the "lunchbox" you then place a cross X on the bottom and top with a guide wheel against each pipe, the guide wheels should be grooved like a pulley perhaps and positioned at a 45-degree angle out from the box. The lateral stresses should be small, so heavy-duty materials aren't needed. Pipes would suffice, e.g., with 1-inch regular black pipes from a plumbing firm...
An electric winch requires electricity, limit switches, a reversible motor, etc. Maybe it could work with manual power instead.
That would simplify matters considerably. I hope I've managed to give some ideas and not increase the confusion further....
//Jante
On the "lunchbox" you then place a cross X on the bottom and top with a guide wheel against each pipe, the guide wheels should be grooved like a pulley perhaps and positioned at a 45-degree angle out from the box. The lateral stresses should be small, so heavy-duty materials aren't needed. Pipes would suffice, e.g., with 1-inch regular black pipes from a plumbing firm...
An electric winch requires electricity, limit switches, a reversible motor, etc. Maybe it could work with manual power instead.
That would simplify matters considerably. I hope I've managed to give some ideas
and not increase the confusion further....//Jante
Thank you for your feedback, Jante. Not more confused than usual. But with the remote control, you can operate the ceiling winch, via, and send the lift up and down. Is a reversible motor needed then? But a limit switch is probably necessary, otherwise the winch might be pushed up through the ceiling or down to the floor if the control is held tightly. I've considered manual operation, but since we've spent money on a special drum and have some pennies left, it feels more appropriate with electric control. It's good to hear that controlling isn't much of a concern. You probably have to be careful with distance, level, and angle so that it doesn't jam when the box is moved up and down.
As a switch, you can have these:
http://www.kjell.com/sortiment/el/e...mikrobrytare/mikrobrytare-250v-5a-hjul-p36030
For tracks, you can use this solution:
http://www.elektronikforumet.com/forum/viewtopic.php?f=3&t=7411&view=previous
Two pipes from the bottom to the top. Then 2 exhaust clamps with ball bearings per pipe.
The motor can be basically any motor, maybe a screwdriver?
The motor gets a drum and wire is attached to the bottom of the shaft and to the elevator itself.
Since I live in the right city, I might as well offer to take a look if you want.
http://www.kjell.com/sortiment/el/e...mikrobrytare/mikrobrytare-250v-5a-hjul-p36030
For tracks, you can use this solution:
http://www.elektronikforumet.com/forum/viewtopic.php?f=3&t=7411&view=previous
Two pipes from the bottom to the top. Then 2 exhaust clamps with ball bearings per pipe.
The motor can be basically any motor, maybe a screwdriver?
The motor gets a drum and wire is attached to the bottom of the shaft and to the elevator itself.
Since I live in the right city, I might as well offer to take a look if you want.
Thanks for the tips. But is it really that easy and what is your assessment of a ceiling winch according to the link above? Naturally, I have also run electricity for this purpose so it probably won't be a problem. Have you built something similar and is it as simple as you suggest to build a functioning dumbwaiter? By that, I mean the mechanics and the electrical part. The box itself is probably the easy part. How should I interpret the last part - Would you be able to take on mission impossible?
fixing the running wheels should be simple with some small furniture wheels that roll against the MDF walls. Then a simple winch from Biltema or similar should work for the lifting function. The "problem" will be reasonable control; the most important thing is safety so no one gets injured, for example, crushed hands because the elevator can be operated with the door open! So either a pinch protection or switches on the door must be installed. Then it's quite easy to install a limit position in the up and down positions, plus install buttons for up and down so you don't have to hold the button while the elevator goes up or down.
I don't think it will be easy, but maybe one can give you a little help along the way. I am an engineer, if that's a positive thing.
The one you linked to was very expensive, but if the price isn't a problem, it's certainly excellent.
With counterweight, you can manage with much smaller motor.
Pinch protection can be resolved with current measurement, which can also be used for end positions.
The one you linked to was very expensive, but if the price isn't a problem, it's certainly excellent.
With counterweight, you can manage with much smaller motor.
Pinch protection can be resolved with current measurement, which can also be used for end positions.
The easiest way to achieve decent safety is for it to move slowly and require holding down a button for it to operate. If someone gets pinched or someone screams, you will likely release the button immediately. If you start adding safety circuits and limit switches, it can become as complicated as you like.
I think the simplest solution is to use a pre-made winch. I have seen a book lift that used bicycle chains to lift it. It also had a counterweight. In general, it worked like a regular lift, except for a few safety details that were unnecessary in that context. However, that's a significantly larger project.
Erik
I think the simplest solution is to use a pre-made winch. I have seen a book lift that used bicycle chains to lift it. It also had a counterweight. In general, it worked like a regular lift, except for a few safety details that were unnecessary in that context. However, that's a significantly larger project.
Erik