Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11

Thread: DIY Gantry Crane

  1. #1

    Join Date
    Jan 2019
    Posts
    7
    Thanks
    0
    Thanked 20 Times in 4 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BrianGreul's Tools

    DIY Gantry Crane

    I have needed a heavy duty crane for a while. So last week I decided to build a hydraulic gantry crane. I shot several videos of the crane in use, being built, and the design planning.

    Disclaimer: Lifting heavy objects is very dangerous. If you are not confident in your welding and fabrication and design abilities please don't do it. Lifting thousands of pounds can create a situation which could cause serious personal injury or death.

    Now that you have been warned, this crane is designed for 5,000 pounds but could probably handle 9,000 based on the beam strength from an engineering calculator.

    I used inexpensive, off the shelf hydraulic rams from Harbor Freight ($30/ea on sale). About $450 worth of steel and $80 of wheels from Northern Tool.

    The wheels are mainly to make it easy to move on rough surfaces.... you could adjust the wheels to be smaller or to be on parts that flex and remove the load when you lift. The wheels are rated for 1,000 pounds each but I found on a smooth surface I'm able to move the crane loaded which is a huge bonus for me.

    Build Video:


    Planning Video:


    One of the videos showing it in use:


    Playlist of all DIY Gantry crane related videos:
    https://www.youtube.com/playlist?lis...e_polymer=true

  2. The Following 8 Users Say Thank You to BrianGreul For This Useful Post:

    baja (01-15-2019), jmparker98223 (01-14-2019), johnsmachines (01-14-2019), Jon (01-14-2019), Ken Koch (01-14-2019), rlm98253 (01-14-2019), Sam's Workshop Diary (01-18-2019), toma (01-15-2019)

  3. #2
    Supporting Member metric_taper's Avatar
    Join Date
    Mar 2017
    Location
    Marion, Iowa
    Posts
    337
    Thanks
    88
    Thanked 151 Times in 89 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    metric_taper's Tools
    Somewhere a miracle occurred, from seeing the video of skidding the Monarch onto a skid, no video of seeing it loaded into the box truck (I went to the youtube channel and this step is missing). That had to be interesting.
    Also, this lathe may be tough enough to lift from the spindle, but in newer lathes with large through holes, that could end up bending it beyond use.

  4. The Following User Says Thank You to metric_taper For This Useful Post:

    rlm98253 (01-14-2019)

  5. #3

    Join Date
    Jan 2019
    Posts
    7
    Thanks
    0
    Thanked 20 Times in 4 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BrianGreul's Tools
    Quote Originally Posted by metric_taper View Post
    Somewhere a miracle occurred, from seeing the video of skidding the Monarch onto a skid, no video of seeing it loaded into the box truck (I went to the youtube channel and this step is missing). That had to be interesting.
    Also, this lathe may be tough enough to lift from the spindle, but in newer lathes with large through holes, that could end up bending it beyond use.
    Not sure why you had trouble finding it..... 42 minute video:


    There is a bit missing due to a camera misbehaving, but the overall process is there.

    The balance point is under the spindle. Lifting by the spindle would damage it. We passed the sling around the spindle and through the ways. There we blocked it with wood. So all the lifting force is under the ways or bed. This is how the 1941 manual shows to sling the lathe.

  6. The Following 2 Users Say Thank You to BrianGreul For This Useful Post:

    Jon (01-15-2019), Toolmaker51 (01-14-2019)

  7. #4

    Join Date
    Jan 2019
    Posts
    7
    Thanks
    0
    Thanked 20 Times in 4 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BrianGreul's Tools
    This particular video is in the play list: Moving a Monarch Lathe. I didn't consider it DIY Gantry Crane related.

  8. #5
    Supporting Member metric_taper's Avatar
    Join Date
    Mar 2017
    Location
    Marion, Iowa
    Posts
    337
    Thanks
    88
    Thanked 151 Times in 89 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    metric_taper's Tools
    I looked at your video list on youtube. You have a broad range of hobby's.
    I see this video in the list. Looks like you used pull back truck winching it on its hydraulic platform. Then transported to the box truck.
    You have a video saying you rented the box truck. Do you own the hydraulic platform truck? Seems you used it to move your Bridgeport.

    Anyway that sort of truck was used to deliver my 5600lb lathe. I paid a local crane company to off load the lathe from the shipping terminal, then to my shop. They loaded the lathe with a fork lift to move it down a gravel driveway. The operator had machinery skates to place it in the shop. It was worth the price.

  9. The Following 2 Users Say Thank You to metric_taper For This Useful Post:

    PJs (01-15-2019), Toolmaker51 (01-14-2019)

  10. #6
    Supporting Member NeiljohnUK's Avatar
    Join Date
    Dec 2017
    Posts
    170
    Thanks
    14
    Thanked 78 Times in 53 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    NeiljohnUK's Tools
    Quote Originally Posted by BrianGreul View Post
    The wheels are mainly to make it easy to move on rough surfaces.... you could adjust the wheels to be smaller or to be on parts that flex and remove the load when you lift. The wheels are rated for 1,000 pounds each but I found on a smooth surface I'm able to move the crane loaded which is a huge bonus for me.
    Having seen the end result of a loaded gantry overturning when a small stone got caught under a wheel I'd rather only use the wheels for unloaded movement, experience can be an awfully hard and painful teacher, luckily no-one was killed
    .

  11. #7

    Join Date
    Jan 2019
    Posts
    7
    Thanks
    0
    Thanked 20 Times in 4 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BrianGreul's Tools
    A standard flat bed roll-back wrecker.... Just one of many things they do.

  12. #8

    Join Date
    Jan 2019
    Posts
    7
    Thanks
    0
    Thanked 20 Times in 4 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    BrianGreul's Tools
    Quote Originally Posted by NeiljohnUK View Post
    Having seen the end result of a loaded gantry overturning when a small stone got caught under a wheel I'd rather only use the wheels for unloaded movement, experience can be an awfully hard and painful teacher, luckily no-one was killed
    .
    Fortunately, physics is a great way to understand the effect of forces. While it's possible to over turn a crane, the simple physics of a 5,000 pound weight make the leverage required to turn over the crane impossible. Even if you succeeded in somehow doing that, the lathe would crash down the couple of inches at most that it was off the floor.

    In this particular case, the wheels are primarily for repositioning and storing the crane. However, if the wheels are oriented properly and it is an absolutely smooth surface, the crane can be moved within my garage. This is particularly helpful for repositioning the lathe. At low speeds and barely off the floor any tragic accident is highly unlikely.

    The minimum design was around 5,000 pound lift. The material that was available was much heavier. 25% to 100% heavier depending on the component. The net effect is that the as-built rates out at 9,000 pounds. So it's well within the safety margins.

  13. The Following User Says Thank You to BrianGreul For This Useful Post:

    Jon (01-16-2019)

  14. #9
    Supporting Member NeiljohnUK's Avatar
    Join Date
    Dec 2017
    Posts
    170
    Thanks
    14
    Thanked 78 Times in 53 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    NeiljohnUK's Tools
    Quote Originally Posted by BrianGreul View Post
    Fortunately, physics is a great way to understand the effect of forces. While it's possible to over turn a crane, the simple physics of a 5,000 pound weight make the leverage required to turn over the crane impossible. Even if you succeeded in somehow doing that, the lathe would crash down the couple of inches at most that it was off the floor.
    Indeed the height is key and having a low enough CoG, the incident I had to investigate involved a 3m tall 2,000 Kg stainless steel cactus sculpture covered with sharp steak knives, they got lazy and rather than 'run the beam' then reposition to run the beam again 4 or 5 times they decided to push it along. They were very, very lucky neither the sculpture nor the gantry or block hit anyone, the sculpture was scrap.

  15. #10
    Supporting Member Ralphxyz's Avatar
    Join Date
    Dec 2016
    Posts
    962
    Thanks
    0
    Thanked 192 Times in 155 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Ralphxyz's Tools
    IN the original (first) videos you had a Box Truck on your last video of actually loading it you have a Flatbed, maybe you explain what was going on but I just skimmed the videos.

    Ralph

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •