I think @RoIi112 maybe on to something.
It does remind me a little bit of this, which is a wayspot and pokestop:
The Old Bakery winch and loading doors
Site of an old bakery which now is used as a local picture framing company. The loading winch for the upper storage area is still in place as well as its well maintained doors.
The building itself isn’t listed, but I wouldn’t be surprised if it was a ‘non-designated heritage asset’.
I might nominate my thing once. Doesn’t hurt to try
Good luck.
I think you would definitely need more information to support it. You might be able to glean more about its form and function by searching for similar examples - I used “historic hoist pulley”.
You might be better off nominating the loading bay and hoist, as the doors look to be in better condition than the hoist.
There are plenty still around if the building is still around as they are such an integral part of the structure.
If there is a story it will be with the building .
This reminds me of a @Gendgi find where an antique crane had been repurposed as art: