One of the few good things about the crisis is that my sons are staying with us, and I’m helping my middle son with his project of stripping out a transit van and refitting as a camper. Of course when and where he’ll ever be able to use a camper in coming years is a moot point ... but that’s by the by.
Now, what with him being a coffee nut, the fit-out absolutely has to include his pride and joy, his thumping great coffee machine and grinder. No matter that he has a total of 1200 x 550mm space for kitchen counter, of which coffee making will take up half; nor that the machines weigh about 50kg combined, and the coffee machine is over 750mm tall.
Well there is a solution, namely a lift: when down the coffee machine is stored below the work surface and the top of the lift is flush with the work surface, giving you a cooking prep area; when up the coffee machine is brought level with the work area. Basically this lift has to raise a platform roughly 500 x 500 up by 800, with the space below it being about 100 high. With the machines weighting 50kg, and making allowance for the weight of the structure and also downwards force from coffee tamping I think we should be allowing for 100kg.
It’s his birthday soon and I’d like to do this for him. I’m looking for a quality solution, not something horrible rickety and jerky. Now I’m reasonably practical and can work fairly precisely (eg cabinetry), but this is outside my experience.
What I’m envisaging is that the lift comprises a lower platform and an upper platform, both about 500mm square, and 800mm apart (top to top), held together say by threaded rod struts with 4 guide columns running through the corners. These could be full height (floor to ceiling) if desired but better if this can be avoided.
I’ve got three different ideas of how to drive it, which I throw out there to get the creative juices flowing ...
DRawings and photos attached.
Any thoughts on this gratefully received!
Now, what with him being a coffee nut, the fit-out absolutely has to include his pride and joy, his thumping great coffee machine and grinder. No matter that he has a total of 1200 x 550mm space for kitchen counter, of which coffee making will take up half; nor that the machines weigh about 50kg combined, and the coffee machine is over 750mm tall.
Well there is a solution, namely a lift: when down the coffee machine is stored below the work surface and the top of the lift is flush with the work surface, giving you a cooking prep area; when up the coffee machine is brought level with the work area. Basically this lift has to raise a platform roughly 500 x 500 up by 800, with the space below it being about 100 high. With the machines weighting 50kg, and making allowance for the weight of the structure and also downwards force from coffee tamping I think we should be allowing for 100kg.
It’s his birthday soon and I’d like to do this for him. I’m looking for a quality solution, not something horrible rickety and jerky. Now I’m reasonably practical and can work fairly precisely (eg cabinetry), but this is outside my experience.
What I’m envisaging is that the lift comprises a lower platform and an upper platform, both about 500mm square, and 800mm apart (top to top), held together say by threaded rod struts with 4 guide columns running through the corners. These could be full height (floor to ceiling) if desired but better if this can be avoided.
I’ve got three different ideas of how to drive it, which I throw out there to get the creative juices flowing ...
- 4 linear actuators with 800mm travel, one in each guide column; they’d have to be the type of actuator that can be sync’ed by being driven by a suitable controller.
- Rotating lead screws in each column (the column would have to be slotted), with a corresponding nut on each corner of the lift. The lead screws would have a cog either the top or the bottom, driven by a central gear to maintain synchronicity. The central gear could be driven direct by a motor, but if it was belt driven then the motor could be outside the lift space and then wouldn’t be constrained by height
- Build a scissor mechanism below the lift, driven by a small high force linear actuator.
DRawings and photos attached.
Any thoughts on this gratefully received!