if you wanted to know how to hold a thing in position, then all the rest was not needed, a simple "how can I lock a thing in position with a 30 pound load ?" or, did you mean that the platform would extend 30 inches ?Īs was mentioned, you really have not offered much in the way of details.Īs for your question. If you have cables that are 30 inches long, fixed at the end of the desk and you rotate 90 degrees, your 21.2 inch desk (again, doing the math) would open and close with different holding forces. The linear actuator located 6 inches from the hinge would be out of the way when extended and while the circumference of the arc of travel of 90 degrees is 30 inches, and your 19 inch table (doing the math) you only need a short stroke. (I may have the only overweight cat that ever jumped on a desk.) not cobbled together, but calculations and clever design to allow for additional forces not expected. the mechanical bits you want to add to open and close should be engineered. The hinge carries the bulk of the weight. add to that your leaning, pressing, writing, coffee cup and what-not.
If your desk is a hinged table top that rotates from the wall to create a work platform, total weight of the platform and keyboard being 30 pounds. You are asking for selection of a device without any real information. unless you expect it to have multiple positions, which you did not mention. eliminate the nonsense of trying to hold a motor or drive in a position. I would use sliding rails with fixed length bars as the main support to hold the desk at level.Īnd only use the motor to open and close. You have left out a huge amount of information and have not offered a drawing of your design. "Hey, you accidentally answered the actual question." You might want to check your smirk at the door. Ok, thanks for trolling my threaded with your half hearted suggestions to use magic pixie dust. The other problem is I want the desk to be heavy so that it will be more stable. So I would have to switch from raising the counter weight to lowering the desk. I considered a counter weight, but rejected that idea because the load changes as the angle of the desk closes. Are you talking about a gas strut? I consider it but don't have space. I'm not sure what you mean for Tailgate lift. The other problem with a dc motor is that the load is going to change as the desk closes. Do you have any links for dc motor and worm drive? And what would be the minimum "step size" or revolutions one could expect for a dc motor. I will ask you the same question I asked Hammy.
What details are missing for what this is for? Ans sensors taht detect fully up & fully down. Have you looked into the actuators that raise a car tailgate? Anyway, if you want to use pulleys yes a dc motor and worm drive gearbox. 'The practical solution simply attaches to the wall and conveniently folds away to save space, making it ideal for small or multi-use spaces.Hammy is right a stepper is completely the wrong choice. 'Aldi's Compact Living Desk Solution (£59.99, online only) offers home workers the perfect compromise between having a dedicated space to work without having a messy desk on display,' the German supermarket says. When folded away, the desk doubles up as a chalk board on the wall (and has space for plants on top). With home working here to stay, now is the perfect time to revamp your office space and separate work from downtime.Ĭompact, neat and incredibly easy to set up, the folding desk has a shelf for stationery, room for a laptop, and even a chalk board for writing that important to-d0 list. No desk? No problem! Budget supermarket Aldi has launched a clever space-saving folding desk for those without a dedicated home office.Īvailable to pre-order online now, the Compact Living Desk Solution (£59.99) simply attaches to the wall and conveniently folds away after use - making it ideal for small or multi-use spaces.