SIGforum.com Main Page The Lounge Ski lift in country of Georgia goes haywire - skiers flung all over the place
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Info Guru |
Another view: News story: https://www.washingtonpost.com...m_term=.5f977b14ab09 “Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.” - John Adams | ||
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| Peace through superior firepower  |
Good times | |||
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| Rail-less and Tail-less |
I also posted this...you beat me by a minute. Mine is a 3rd view. Crazy how many videos you will get of an incident now that everyone has cameras 24/7. _______________________________________________ Use thumb-size bullets to create fist-size holes. | |||
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| Info Guru |
It is crazy...With the different angles it looks like a bunch of people were jumping off from pretty high up. “Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.” - John Adams | |||
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The Unmanned Writer |
"Look at me - I'm flying!!" Life moves pretty fast. If you don't stop and look around once in a while, you could miss it. "If dogs don't go to Heaven, I want to go where they go" Will Rogers The definition of the words we used, carry a meaning of their own... | |||
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| Green grass and high tides  |
That is not good. "Practice like you want to play in the game" | |||
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"Member" |
Where can I see more of that news reporter? I didn't understand her, but I don't need to. "And now for the very serious and sexy news..."  _____________________________________________________ Sliced bread, the greatest thing since the 1911. | |||
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| Green grass and high tides |
I would think these type of units have an emergency shut off switch. I hope the employee's can explain why no one was around to shut the unit down for cris sakes. "Practice like you want to play in the game" | |||
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| Member |
It snows in Georgia? I thought it was too humid and flat. And why isn’t someone trying to cut power? P229 | |||
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| Peace through superior firepower |
Was drinking vodka. | |||
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Tinker Sailor Soldier Pie |
Like i said in the other thread, there is no emergency stop for a malfunction like that. I don't believe it's even possible to run ski lifts backwards. That likely was the result of a broken drive gear. Cutting power, emergency stop...it's not how it works in a situation like that. It's all gravity and inertia at that point. ~Alan Acta Non Verba NRA Life Member (Patron) God, Family, Guns, Country Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan | |||
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Drill Here, Drill Now |
Watch it again. Something in the drive line busted and it is free spinning in reverse. Therefore, can't hit an ESD on the motor and gravity is being a bitch. If you think of the elevator safety, it'd take an enormous set of brakes to do that on a chair lift. Ego is the anesthesia that deadens the pain of stupidity DISCLAIMER: These are the author's own personal views and do not represent the views of the author's employer. | |||
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| Go ahead punk, make my day |
Russian's don't need instruction manuals. | |||
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Member |
Actually, there is. There is a large claw-like lever called a "dog brake" that the lift operator is supposed to enable in these types of emergencies. I'm really baffled by what happened here, because those things are near fool-proof. The bullwheel has large holes in it and the dog brake is supposed drop into one of those holes in the event that the haul rope (the cable that the chairs are attached to) begins to roll back. It's kind of a PITA to reset a dog brake, but it's not terribly uncommon to use. I'm really curious to see how that failed. (We have plenty of Doppelmayr lifts at our resort, all have a dog brake.) (13 yr. professional ski patroller at Park City Mountain Resort here.) | |||
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| Member |
That's a ride of a life time. I believe the best option was to jump off the lift onto the powder. | |||
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| Peace through superior firepower |
Is no vodka in instruction manual | |||
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| Tinker Sailor Soldier Pie |
First off, howdy, neighbor! Second, you're right of course. A similar thing happened at Sugarloaf a few years back. Here's an explanation of the cause and how it was prevented from being a much worse accident. Investigators from Sugarloaf working in conjunction with an engineer from the State of Maine Board of Elevators and Tramways have identified mechanical failures that led to the King Pine lift rollback, resulting in injuries to seven guests yesterday. The investigation began shortly after the evacuation of the lift was complete. Preliminary findings revealed that the trigger for the incident was a major mechanical failure in one of two gearboxes connecting the lift's electric motor to its drive bullwheel. The gearbox failure effectively de-coupled the bullwheel from the lift's primary service brake, which is located on the drive shaft between the two gearboxes, and its anti-reverse brake, which is the first of three redundant backup mechanisms for preventing reverse travel. At this point, the emergency bullwheel brake, which uses calipers to apply braking pressure to the flange of the bullwheel itself, was applied by the lift attendant. This brake slowed the speed of the rollback and ultimately brought the lift to a stop. The application of the emergency brake by the lift attendant likely prevented a more extensive rollback. The final braking mechanism, known as a drop dog (a large metal pin that drops into the bullwheel to prevent rotation), apparently failed to deploy as designed. https://www.tetongravity.com/s...sugarloaf-injuring-7 ~Alan Acta Non Verba NRA Life Member (Patron) God, Family, Guns, Country Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan | |||
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| Green grass and high tides |
Thanks for that. I too knew that. It is always fun in these threads to let the "no it all's" tell us there is no such thing. No doubt an equip. failure. Equip. breaks. It happens. But the human failure is the real failure here. If the safety system was down or an operator was not on duty or occupied and unable to activate it Someone's gone go into the fire on this one. That is a very bad situation. "Practice like you want to play in the game" | |||
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| Tinker Sailor Soldier Pie |
" No it all's?"  Yeah sure, you knew that too. Look, no, there is no such thing as a "shut off switch" with a failure like that. My comment was not accounting for an emergency caliper style brake. Read the account i posted above. Those failures were not human, unless they relate back to equipment inspections which is hardly the fault of some 17 year old lift operator. The biggest fault that might be laid at the lift attendant is not applying the emergency brake (I have no idea how it is engaged, whether electronically or manually) before the lift really started running away. And who knows if that brake didn't also have a massive failure. This was catastrophic equipment failure first and foremost. ~Alan Acta Non Verba NRA Life Member (Patron) God, Family, Guns, Country Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan | |||
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| Green grass and high tides |
The historical evidence speaks for itself. Nice try though. With the rolly eyes and all. Relax, it is all for entertainment.  Yes it was a massive equip. failure as I already said. Most like compounded by a failure of at least one or more back up safety measures designed to insure something like this does not happen. "Practice like you want to play in the game" | |||
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