OT Supermarket Trolleys

[mark]

The warning says something like: Will come to a Sudden Stop at the Red Line.

How does that work?

mark

[mark]

Inductance loop buried in the ground at red line.Puts the brakes on. Assuming you`re talking about shopping trolleys but just forgot to mention it?

[mark]

Inductance loop buried in the ground at red line.Puts the brakes on. Assuming you`re talking about shopping trolleys but just forgot to mention it?

Thanks for that. I thought shopping trolleys were things pulled along by old ladies, often finished in a tartan effect.

mark

[Bruce]

Not all old ladies are finished in a tartan effect.

Some are finished in camel hair effect, others in tweed effect. ;-)

[Matty F]

No he's talking about Supermarket Trolleys like the heading says :)

[Graham.]

[Dave]

Or, in other words a Fiat Punto ??

Dave ;-P

[John]

A cover sort of flips around the wheel. It requires a tool to reset it.

Re: Trolleys - I think those that can travel up and down moving escalator type ramps are clever.

[Dave Liquorice]

Must have posh trollies if they have an electical automatic braking sytem, either that or an awful lot of tea leaves to make such a system worth while.

What I have seen is attachments to the wheels and section of floor that engages on the attachments stoping the trolly going any further. I've also seen this used on an escalator for people and trollies. No steps just a flat moving ramp push trolly on it locks to the surface you and it ride to the top where fingers lift the trolley off the surafce and away you go.

As for lifting a trolley, they are pretty heavy empty and one assumes people "borrow" them when full to assist in moving their shopping.

[Bruce]

Plenty of trolleys escape from out local supermarket, which is equipped with that system. The brakes only work on one or two wheels, and since those wheels are at the back, it is a trivial task to lift the rear of the trolley while pushing it over the loop.

Lots of people seem to do it, and I regularly go to the supermarket pushing a trolley that I found on the way. ;-)

[Jules]

Lose the 'super' bit and you might be on to something...

( & be thankful you don't have the sh*t trolleys that we all have here in the US :-)

[John Rumm]

Those usually have a fixed inner part of the wheel and rotating discs on the outside edges. The edges of the discs only clear the fixed bit by a few mm and are fairly slim. Hence on the travellator the wheel edges drop into the grooves on the surface leaving the fixed bit of wheel grounded on the raised bits of the surface.

[chris French]

some places obviously do, as they had such a system at the Sainburys near where I used to live.

[chris French]

Having tried it once (when I'd parked in a bit of car park in a shopping place outside the actual sainburys car park.

It wasn't easy at to push a trolley full of shopping keeping the braked wheel off the ground (the brake stayed on in this system)

[The Medway Handyman]

And why is the bloke who collects the trolleys only 5' tall, wears NHS spectacles & a bobble hat? Doesn't matter where you go, the trolley bloke always looks the same.

[Dave]

Someone that every supermarket calls in to collect trolleys, a real specialist, I know him, it's Dilbert !!!

[nightjar]

I've seen a Lidl with notices saying that trolleys will stop beyond this point. I'm not sure that could have been done with inductive loops though, as the system had to allow customers to cross a public road to get to the overflow car park, so any loops would have needed to be buried in the road.

Colin Bignell

[Arfa Daily]

Translated to "Shopping Carts" for our US cousins ...

Arfa

[Arfa Daily]

I thought that the ones that I had seen, had the grooves in the moving walkway, slightly off-parallel, so that when the wheel edges dropped down into them, they 'locked' in place, as gravity tried to drag them deeper into the diminishing gap ?

Arfa

[Arfa Daily]

Tesco store near me has trollies so equipped, and all of the Walmart stores that I've seen in the US have the system.

Arfa