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125 posts

Master Geek
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Topic # 240891 1-Oct-2018 14:16
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Can anyone point me to some instructions as to how to make a manual bed crank? I searched online but always gets results for the full medical bed. My father has been bed-bound for a number of months now and my mother is starting to have difficulty lifting him when it is time to eat. While I am happy that my father have started to get his appetite back and gain weight. I would like to help my mother out in any way I can to look after my father. My parents are overseas but since I am visiting them soon, I thought I'd research now on option to raise his bed manually. I was thinking of adding a 1/2 inch thick ply board under the upper half of the matters and add some manual crank. But am having difficulty on looking for parts or what they are actually called. One other option I can think of is similar to a standing desk that would be placed under the bed with a swivel to cater for the change in angle. Any other recommendation welcome.


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259 posts

Ultimate Geek
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  Reply # 2099401 1-Oct-2018 14:19
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Are you planing on having the mattress bend like a recliner bed?

 

Most modern day mattress's do not bend unless cut to allow it to happen

 

Happy to discuss further if you wish send me a pm we can have a chat




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Master Geek
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  Reply # 2099411 1-Oct-2018 14:20
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Yes that is the idea. Being a 3rd world country we only buy foam mattress as proper mattresses cost way too much so am sure it will bend without issues.




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Master Geek
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  Reply # 2099412 1-Oct-2018 14:22
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125 posts

Master Geek
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  Reply # 2099419 1-Oct-2018 14:32
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One other concept https://www.amazon.com/Adjustable-Bed-Back-Rest-Support/dp/B00BIPGD0M but for the entire half of the bed. The important bit is removing the need for my mother to manually lift it hence the idea of a manual crank.


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Master Geek
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  Reply # 2099481 1-Oct-2018 15:10
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CrashAndBurn:

 

One other concept https://www.amazon.com/Adjustable-Bed-Back-Rest-Support/dp/B00BIPGD0M but for the entire half of the bed. The important bit is removing the need for my mother to manually lift it hence the idea of a manual crank.

 

 

 If your father still has arm strength then he could also use something like this or this to assist in getting into a sitting position, and/or use a raised rail on the side of the bed. See rails here. Your mother could then insert a bed wedge or a back rest like above, or this locally, to keep in the sitting position. You can also see if having a back rest permanently under the pillows but above the mattress would work. Some of them can go flat enough to be comfortable sleeping.

 

There is also an option like this which is an inflatable lifter pillow thing that goes above the mattress and below pillows and your father to lift them automatically. Pricey but would require almost zero effort by your mother or father, unlike the other options, and goes almost completely flat.

 

 

 

I'm not an authority on this sort of thing, just work around this area, so had a look on some websites I know of for options.


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Uber Geek
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3366 posts

Uber Geek
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125 posts

Master Geek
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  Reply # 2099525 1-Oct-2018 16:37
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Thanks for the suggestions. Keep them coming. I think the bed ladder would help on occasions when his severe arthritis is not playing up. I was looking for something like the air pumped one as well, just weighing all options.


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  Reply # 2099710 2-Oct-2018 02:06
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A big piece of plywood attached to hinges near the middle of the bed base. Manually raised with a permanently installed car tyre changing jack for raising it.

Otherwise use a couple of electric gate openers for an automatic solution.







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Master Geek
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  Reply # 2099714 2-Oct-2018 05:09
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Aredwood: A big piece of plywood attached to hinges near the middle of the bed base. Manually raised with a permanently installed car tyre changing jack for raising it.

Otherwise use a couple of electric gate openers for an automatic solution.

 

The tire jack is what i considered before. Problem is I feel that it takes awhile to lift. Unless of course there is a setting on jacks somewhere that I dont know off to make it lift quicker?


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  Reply # 2099748 2-Oct-2018 06:11
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A car jack can lift a lot of weight, so it can go closer to the hinge point meaning less cranking. Though it may require more substantial structure.

I'd look at linear actuators (gate openers) if electricity is available.




Location: Dunedin

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  Reply # 2099750 2-Oct-2018 06:21
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A manual system with gas struts to assist may be worth a look too. Just be sure to over centre them so it stays down.

A gas strut might even be able to hold the weight without the need for a locking mechanism.




Location: Dunedin

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  Reply # 2099764 2-Oct-2018 06:54
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And I can see there are "lockable gas springs" available for exactly this purpose, but finding a source of them is proving tricky.

Geekzone, do your stuff.




Location: Dunedin

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  Reply # 2100382 2-Oct-2018 23:11
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CrashAndBurn:

Aredwood: A big piece of plywood attached to hinges near the middle of the bed base. Manually raised with a permanently installed car tyre changing jack for raising it.

Otherwise use a couple of electric gate openers for an automatic solution.


The tire jack is what i considered before. Problem is I feel that it takes awhile to lift. Unless of course there is a setting on jacks somewhere that I dont know off to make it lift quicker?



The problem with any mechanical system that uses human strength as its energy source. Is that the faster you want to lift a given amount of weight. The human who is doing the lifting needs more physical strength.


Unless you use an external energy source (EG electricity) to do the actual lifting. You will have to live with slow lifting times for any human powered system. As it will be a safe bet that elderly people who struggle to get in and out of bed. Would be very unlikely to have high physical muscle strength. Sorry about being negative, but you can't escape the laws of physics.

Should have said before- use a scissor type car jack, not a hydraulic type. As you can still add a counterweight while avoiding any risks with the uncontrolled release of stored mechanical energy. If you need to pause the movement, someone let's go of the handle etc. Everything stops by itself.

Even simpler will be using rope and pulleys. But then you will get an uncontrolled energy release, if someone let's go of the rope. Or a knot comes undone due to not being tied off properly.

And surely a system that is slow to operate, would still be a vast improvement over not being able to get in or out of bed at all.





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