Thread: Installing a hoist

High Geoff,
I would recommend drilling the side plates, 4 x 10mm bolts should do for 250 kg, but if you can go bigger it wouldn't hurt.
If you where to to mount it to the shaft of the girder trolley, the way these hoists are set up with a heavy motor one end and the lifting done at the other end it would be like a rocking horse.

I am just putting a picture here so everyone doesn't have to follow the link, but this is the sort of set up your aiming for with your angle or channel. Angle will probably be better because you can adjust the width to suit, where you will have to work with what ever the channel size is if you go that way.

You will have to play around with the balance point, just make it so with no load the wheels at the lifting end are just lightly touching. Then when you lift it wont over balance.

Dave

Originally Posted by snowyskiesau

Thanks Kev, shortens the journey a bit.
Does he also stock steel? I'll need some 70x70 angle or 100mm channel as well.

I don't think so, but give him a call in the morning before you go up and check.

would this do the job?

Attachment 194562

(use the spacers on the girder trolley to position the angle)

Hi Michael,
The trouble with these hoists is the motor is heavy on one end, but the lifting is done at the other end. Even with with the hoist bolted to the trolley there is a fine line between balancing because the wheels are so close together.
This is the reason I spaced mine so far apart to over come it.

Dave
PS,
I am still yet to fit the felt you sent me (thanks again) I was in Queensland recently and met an old friend who works doing some type of printing machine that uses felt, so he is going to send me a roll of each thickness to see if it's suitable. If it turns out OK I will send you some and offer it around to others for the way wipers.

Just a thought, your idea would work if there was a brace on one or both ends going up to the side frames to stop it rocking.

Dave

Hi Guys,
The way I'm seeing it the hoist need to be fixed to the trolley(even if I don't like it lol)
If it can pivot, when lifting wont the cable pull one end down and then try and wind all the cable on that end of then drum?
So it needs to be fixed to the trolley with the drum between the wheel so that it doesnt tip when it has a load on it (even if this means you need an counter weight on the side opposite to the motor so that it doesn't tip when empty.

Stuart

As long as I set the balance so it's level when lifting i.e. under load, it should be OK.
When it's not under load, it will, as Dave pointed out, be heavier at the motor end so I could rig some sort of roller to prevent the hoist from rubbing on the girder. It won't have much load on it, just the weight of the hoist itself which is not a great deal. (11kgs)

Usually the hoist and the trolley are joined with a shackle or link or something so that it can pivot and find it's own balance point. For less than 250kg if the pivot was over the winch drum I think it would probably be alright.

Michael

Geoff,
Have a look on ebay at the motorised trolleys mounted to these type of hoists as they are about the same wheel spacing, it will give you a good idea where to mount yours on the girder trolley.

Dave

Originally Posted by Michael G

would this do the job?

Attachment 194562

(use the spacers on the girder trolley to position the angle)

Thanks Michael
That's what I was trying to say.

Phil

Originally Posted by Michael G

Usually the hoist and the trolley are joined with a shackle or link or something so that it can pivot and find it's own balance point. For less than 250kg if the pivot was over the winch drum I think it would probably be alright.

With a chain hoist or a cable with an idler pulley yeah. Not so sure if its going straight onto the drum. Will be insteresting to see how it goes.

Stuart

Hi guy's, I would like to add my tuppence worth to this topic. I might be wrong & look stupid, but I would rather be that than have someone hurt!! I have recently had one of these hoists delivered & am not in a hurry to mount it (other things to do). But after a quick look at it out of the box, I'm quite surprised at the mounting arrangement. The one that I have has 2 bolts that hold the frame (red pressed metal) to the actual hoist motor/gearbox/cable drum & four more mounting bolts that screw into nuts welded to the pressed metal frame. If that is the case, then it means that the weight of the hoist & any load is only supported by the 2 bolts that screw into the motor assembly, the other 4 bolts will just hold up the frame. This problem is further compounded if angle iron is also held on by the 2 middle bolts as it would mean that they have less thread engagement by the thickness of the angle iron. At the very least I would mount the angle iron by the 4 bolts & drill clearance holes in the angle iron for the middle bolts including the washers so that they have the manufactured thread engagement, or install longer hi-tensile bolts. I will have closer look at mine in the morning.
Ian.

Hi Ian,
Good to hear yours turned up fine, just give it a bench run to make sure it sounds OK as one guy on here had a noisy one and had to return it.

No wrong or stupid here and you are right in what you say about the bolts, but half the weight on the drum is transfered to the frame though the bearing on the end, so it is held by 2 centre bolts and the frame bolts as well.
I had to use longer bolts in mine because the plate was a lot thicker. I would also advise using longer centre bolts, but the outer ones should be fine as they are meant to go through the 4mm bracket that comes with the hoist.

Dave

Hi Dave, I will run it tomorrow to see how it sounds. I realize that the end of the drum shaft is in a pocket in the end of the frame, but if the bolts did strip i'm sure that the bearing would just pull out. I'm only going to use mine to lift a large vise onto the mill or large lumps of steel so won't be lifting more than maybe 20 Kg's. If I was going to lift 500Kg's I would definately put a strap of about 3x40mm under the motor near the fan end with a pad & set screw to just bear against the motor, this coupled with the drum shaft would stop the bolts from stripping.
Ian.