Needs Pictures: 0
Results 31 to 45 of 49
Thread: Swing gantry for the workshop
-
22nd May 2020, 11:00 PM #31Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Needed some way of connecting the electric hoist to the carriage.
The hoist comes with two 3mm pressed steel hangers which won’t work for me, so I hacked up a bit of 150mm channel (scrapped forklift Tyne extension) to make something that would.
Steve
-
22nd May 2020, 11:18 PM #32
Not sure how far apart your wheels are on your trolley, but be careful about the balancing when there's no weight as there back heavy.
These hoists are great and well worth there money, I've taken this simple hoist to a whole new level on this crane build which I'll reveil when I put up my crane thread.
I have found on my old crane it's to quick for picking up and dropping down to be any good for any precise work like chuck fitment, or onto the mill table etc, so I fixed that.Using Tapatalk
-
22nd May 2020, 11:37 PM #33Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Thanks Dave.
I’ve made a newbie mistake there and hadn’t thought much about the actual load point - stupidly assuming it would be midway between the factory mount brackets.
I’ll have to look at it properly and come up with a better solution.
Steve
-
23rd May 2020, 12:11 AM #34
Here is my old trolley that worked great and balanced well.
Also here is a link to my crane build, sadly the pictures have been lost in this forum, so I hope it's ok to share. It also shows the festoon, I've seen guys using chain links instead of wheels for it.
Home made jib crane for the shopUsing Tapatalk
-
23rd May 2020, 12:31 AM #35
Looking at your trolley design, to make it suit this hoist your wheels need to be further apart, split it in the center and widen it adding steel between and welded to the sheet metal, no pivot.
Unless you want add a couple of extra couple of wheels on the motor end to take the weight which I've seen but doesn't look great.
Or
If you split it you can just weld either half of your trolley to each end to the factory sheet metal of the hoist, Reinforced it both sides with a bit of sheet metal from the trolley frame to the factory sheet metal will also stop the wheels seperating from around the round bar as I said in a earlier post.
I would pick the latter.Using Tapatalk
-
26th May 2020, 10:56 AM #36Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Swing gantry for the workshop
So I poked and prodded it, attacked it with MIG, grinder and a few bits from the scrap bin.
Ended up with this:
Pivot moved to line up with the cable drum, support on the motor end that holds the hoist horizontal and also provides anti-spreading for the carriage, and a similar anti-spread brace at the drum end with a couple of bearings on it to stop the carriage tilting and jamming under the weight of the motor.
Steve
-
26th May 2020, 03:16 PM #37Senior Member
- Join Date
- Feb 2009
- Location
- jilliby nsw
- Age
- 71
- Posts
- 111
I'm impressed, very creative Steve, that should work, well done
-
26th May 2020, 05:56 PM #38Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Thanks
Not sure if it qualifies as creative, but hopefully an acceptable recovery of my initial mis-design !!
Getting closer to finished now - just the support stay to make, and then decide what I'm going to use for bracing on the back of the post to reduce the flex under load.
Stay will be some 25mm pipe, machined clevis at each end and a piece of 16mm all-thread for adjustment. RH thread only so to adjust it I'll need to pull the clevis pin and rotate it.
Hoping to make a start on that tonight.
Oh - there's always SOMETHING else: A guide wire/runner for the power lead to the hoist.
Steve
-
26th May 2020, 07:35 PM #39
Your fabrication skills are great, nice brackets.
If you make your clevis a U shape, the thread rod could enter in the center of the U and right hand thread wouldn't bother you, nore would it need unbolted to adjust it.
The top of the U would have the holes drilled to suit your post brackets.Using Tapatalk
-
26th May 2020, 10:54 PM #40Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Swing gantry for the workshop
-
26th May 2020, 11:46 PM #41
Was thinking something more like this, leaving ring spanner room
Using Tapatalk
-
26th May 2020, 11:57 PM #42
You may need to weld 2 brackets close to either side of your mast for it to attach to to give you room for a ring spanner to rotate and tighten it.
Make the U shape to accommodate your ring spanner at least 1 division, then position the lugs to suit.
Using 2 lugs would spread the load to both sides of the mast, which will double the strength.Using Tapatalk
-
27th May 2020, 12:02 AM #43
Forgot to add, the other ends can be just welded solidly to the center support, over that length a slight adjustment is not going to bend the rod, so no need for a pivot in the center.
Using Tapatalk
-
27th May 2020, 12:26 AM #44Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
Damn - your drawing is much more professional than mine!
I get what you mean now - that’s nice and simple.
Made up this clevis for one end tonight.
BaronJ - I reckon this will be good for a whole herd of elephants!!
Steve
-
27th May 2020, 10:52 AM #45
That looks nice and solid
Using Tapatalk
Similar Threads
-
Adjustable height gantry
By OxxAndBert in forum METALWORK PROJECTSReplies: 16Last Post: 13th Mar 2022, 07:28 PM -
Now that's a CNC gantry mill....
By jhovel in forum CNC ForumReplies: 5Last Post: 8th Nov 2018, 07:55 PM -
Made myself a Gantry Crane for the workshop (Video)
By Tilly819 in forum METALWORK PROJECTSReplies: 1Last Post: 14th Jul 2018, 02:20 PM -
Huge gantry mill getting installed at Man diesel
By Dave J in forum METALWORK GENERALReplies: 21Last Post: 16th Apr 2011, 08:08 AM