Hinges for HEAVY floor hatch!

[Busster]

Your steel construction must be self-supporting, as 5cm of concrete is not sufficient => you might as well place a sheet on top and skip the concrete altogether.

That's probably quite correct. Mainly thought about the damping.

 

[prototypen]

Concrete adheres poorly to galvanized surfaces, so you will have to keep that cost. A 5 mm plate on the top and ribs/reinforcement underneath will suffice.

Protte

 

[Busster]

Then it will be a box with spant inside

 

[prototypen]

"inside"?
Are you going to have a plate on the top and one underneath and frames in between?
How will you be able to weld one of the plates?

Protte

 

[Busster]

Sheet metal on top with a welded square tube frame and welded-in slats like upright flat iron 40x5 and screwed sheet metal at the bottom. Type!

 

[prototypen]

What does the plate at the bottom add? More weight?
Maybe masonite works just as well.

Protte

 

[Busster]

Maybe it's time to steer the thread back to the original question. Hinges!

Are there any alternatives to Tectus hinges? 3000 kr is a bit steep, I think!

 

[prototypen]

You don't want the hinge to stick up in the slightest, completely smooth, no, then I can't suggest anything.
There will be quite a lot of small pieces that need to fit together in some strange way, and that costs money.
Then they're so expensive that almost no one buys them and then they become even more expensive.

Protte

PS A friend uses the expression "It costs to stay on top." Oh so true.

 

[Busster]

Maybe someone else out there has some tips about hinges for a hatch in a garage floor

 

[Okarlsson]

Maybe someone else out there has some tips about hinges for a hatch in a garage floor

Unfortunately not, but on boats, it's not the hinges that support the hatch. The hatch rests on all four sides, and the hinges are only used when lifting and therefore only need to support the hatch.

 

[Busster]

Unfortunately not, but on boats, it is such that it's not the hinges that support the hatch. The hatch rests on all four sides, and the hinges are only used when lifting and only need to support the hatch then.

That's how it will be here too. When the hatch is closed, it rests on all 4 sides and the strain on the hinges, which is relieved by gas springs and actuators, only occurs during opening and closing.

 

[raveper]

Have a gap at work made of grating with a metal sheet on it. Supports a forklift.

 

[Okarlsson]

That's how it will be here too. When the hatch is closed, it rests on all 4 sides and stress on hinges, which is relieved by gas dampers and actuators, occurs only during opening and closing.

But then the hinges don't feel like a major problem. Sheet metal on driveable grating shouldn't be too heavy (how big is the hole?) especially with gas dampers and actuators.

 

[Busster]

But then the hinges don't seem like a big problem. Metal sheeting on a drivable grid shouldn't be too heavy (how big is the hole?) especially with gas springs and actuators.

The hatch is just over 1 m2 in size.

 

[Busster]

Then it's really just about finding cheap gångjärn.