operate

Overhead Bridge Crane Operation and Safety



Sharing buttons:

go ahead never stand in front of box or

always stand on one side if this door

blows open

that's the disconnect for this crane

main power disconnect when it's up

everything's dead now we can go to the

crane if you notice the cream has power

available the white light is a white

labels as power is available to the

crane and the crane is also placarded

where it shows that the white labels so

power and uncrate energized as in blue

okay the e-stop is already pushed in for

safety release the e stop to eat the

turn and then we will start the crane as

long as we make sure that nothing is in

the way it cleared your area and now

you're pushing the green start button

you'll hear the horn sound and the blue

entered blue crane energy plate

on one side of the label I see that

erecting now we can start moving the

crane if we need to move it we need to

move it to whatever we're going to pack

which direction are we going to move

well how do we know which is north south

east and west

we have labels on the pendant that

correspond with the labels on the bridge

okay so there's a placard underneath

which is a compass rose and it

corresponds with the buttons on the

push-button station pendant station of

the pond yes correct

all right

now when you push those buttons what

happens you have a two-speed infinitely

variable on the trolley travel okay the

hoist is just straight to speed bridge

travel is

variable as well okay so if you push the

button in just a little bit you get it

slow speed you can push it all the way

you can bump it up and stop at any point

do something

and stop and hold

release and slow it down as well without

coming to a complete stop in all and

prolly proud voice travel it's to speed

that's it now why is it important to

maintain us a slow smooth speed when

you're traversing the trolley and moving

the bridge any time you're moving the

load load will have a tendency of making

a pendulum you will lose control of your

load it is absolutely important the

operator maintains control of the load

at all times okay and how about picking

once we've attached to our load you need

to make sure that the load is directly

centered underneath the hoist okay so

you cannot operate this side okay so we

always want to be rail straight down no

side angle okay are you going to

demonstrate a pick for us now is that

what you're doing we're going down all

right I noticed you just push the button

all the way in for your high-speed

right

you're hoping through addy

you're not running the team through the

buck if you're using the nylon swing and

you place the eye over the hook it has

to be appropriate size and there has to

be no burrs on the okay and I noticed

that this hook also has a safety latch

on it and there's the safety latch right

there so you never want to you never

want to defeat that or make it not work

okay so so it'll keep this sling from

popping out should should the load get

balanced yeah that's that's tight but

now also these slings have to be

approved lifting slings they cannot be

just regular old chain swings for safe

lifting okay now as far as the you'll

see the hook also has a 360 degree

rotation and also it will fairly we will

self align itself fairly easily should

the load want to actually pull over to

the center but it is very very important

though not to side pull any hoist no

matter who makes the hoist or what the

hoist is always want to put a straight

pick on it and never exceed the rig pass

that's right yeah it says ten ton that's

it

ten ton

I don't ask before and you picked up

shall we hook at in a quarter-ton no you

can't pick up one ounce cool that's

that's the regulation well in this crane

right here does have a safety overload

so we'll once it goes into that mode if

you've bounced your load it goes into

the safety overload and you'll only be

able to lower the load take all the

weight off the hook and then you can

recycle and start again shall we make a

pic yes put some change

yep and it's very important when when

you start your pick you're going to

start out with just a partial detent of

the button for slow and then go to your

fast feet and make sure that we're

straight up and down and that looks

pretty narrow well it's pretty good a

little bit less alright how's our

north/south our load looks good north to

south north south looks just a little

bit south very dead over the center nice

and centered and then we go up slow

perfect you always go slow to take the

slack out because if you go fast you

could have a shock load which could

destroy the rope you could overload the

crane or it could go into overload mode

if you're near capacity okay go ahead

you could also have a sling nap and then

your load goes off balance and then

we're just going to go up

we should got nice and smooth

and with two thousand pounds half it's

only one time if you have no problem

okay so now we're in the high-speed then

so you pushed your button all the way in

a Jag the high-speed

transferred from high speed to low speed

and at the lower capacity there's no

issues as far as overload so when you

get into the heavier loads you just

always operated slow slow equals safe

that's right okay you want to traverse

this load so we can see where runs with

it there we go take her up take it east

and west

I always stand away never bring that

load over anybody's head even if you

don't like the guy you don't put it over

well with this type equipment you don't

get a cut or a bruise you usually get

broken just merely because of the amount

of weight you usually win the plaintiff

water yeah

one of the scenes seminar

the heart that just shows where the

optical went in yes

how about shall we do a little little

south and a little north and now can you

just is it safe to push all the buttons

all at one time Mike

okay so you want to keep everything at a

slow speed and you can do all your

accesses all at once you can move it

over but you have to do it smoothly by

Louisa he's smooth anyways yeah it

should be a doctor

he's going to be good for training there

he goes going back north

okay

now Mike when he sets this load down you

want to set it down

well you'll set it down again in the

slow mode and then what does he do does

he just you know does it

he just slacks the chain but he does not

want to slack the wire ropes on the

hoist correct okay okay so that hoist

wire rope has got to be maintained

tension all the time yes oh

there

huh

it is very small slowing down without

tree

our

okay now now Lewis is in a he's in a

lowering mode right now what would

happen if you had an emergency and you

absolutely had to stop this rate up the

site from pushing you're releasing that

button what if the button stuck what

would you do okay there it is it did

stop all right

quarter turn to the right push the

button and continue always always put

your hand on the road never under it

that's right well it's important to know

you know where the emergency stops are

on a crane at all times because the

crane is made by people and you never

know who used the crane before you and

the guy could have really overloaded it

could have overworked it he could have

broken he could have melted a contact or

in the control panel anything could have

happened so when you first start using

the crane you test your upper limit you

test your lower limit then you start

your operation of the of the actual

crane itself

and function has laid

that's right labels run prior - yes it's

your daily that's your daily do's and

don'ts and your daily do's and don'ts

are right here just above the push

button station they're right here

so is doing it says deli which is their

deals and there you go

I might have a copy of jam X mostly so

there you have it that's that's a wrap

our load is safely on the floor the

emergency red button is off the power is

off on the crane and that's a wrap