Anyone interested in a davit arm build thread?
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  1. #1
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    Default Anyone interested in a davit arm build thread?

    Sometimes its a pain to get to the press with the forklift and moving couple hundred pound pieces by hand gets old fast, even at 36. So I figure it's time to start working on getting a chainfall up there. I'll likely work on it a few hours a week and build it with roller bearings and a trolley on an I beam.

    Was curious if this is something others would be interested in seeing or I'd be waiting my time and bandwidth posting about it.
    Attached Thumbnails Attached Thumbnails press12.jpg  

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    It is always interesting to see how people solve problems. Writing up the build, although usually a bit of a PITA, can really help you stay motivated. But please do your homework and make a safe design. There are a lot of people on this site who have experience doing this, and if you ask, they may have a lot of helpful advice. I am a geezer, and now look at any heavy lifting (35 pounds?) with a lot of trepidation. Starting now with good lifting practice may help keep your back, and other useful parts operating smoothly when YOU are a geezer.

    So let it rip, ugh.., I mean, lets see how you do it.
    All the best,
    Michael

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    What are the brackets bolted to the front face of the uprights a foot or so up from the ground?

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    Quote Originally Posted by Garwood View Post
    What are the brackets bolted to the front face of the uprights a foot or so up from the ground?
    Fixtures for tightening arbors for a gear shaper. Keen eye

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    Would I like to see the build? Sure, why not? I've have/had need in similar situations now and then too. As I get older I find the work hasn't gotten any lighter.

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    It's a start
    Attached Thumbnails Attached Thumbnails screenshot-92-.jpg   20200319_114246.jpg   20200319_094708.jpg   20200319_102240.jpg   20200319_112128.jpg  


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    Looks like you have a CAD program for solid modeling. Care to share a screen shot of the assembly model? Not interested in stealing your work/numbers just curious about the overall concept you have in mind.

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    My neighbors weld shop made several (some columns have (2))

    He used ball bearing pillow blocks for the hinges.

    They swing very nicely.

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    Quote Originally Posted by AD Design View Post
    Looks like you have a CAD program for solid modeling. Care to share a screen shot of the assembly model? Not interested in stealing your work/numbers just curious about the overall concept you have in mind.
    I don't have an assembly competed yet. I'm sort of used to Solidworks with building individual parts which apparently isn't how Fusion was designed. I have no problem posting details as I will NOT be selling these and anyone if free to copy it for their own personal use. This will likely take a while as I have been very busy trying to get other work done. But I will keep the thread updated.
    Attached Thumbnails Attached Thumbnails screenshot-96-.jpg  

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    Quote Originally Posted by Hardplates View Post
    I don't have an assembly competed yet. I'm sort of used to Solidworks with building individual parts which apparently isn't how Fusion was designed. I have no problem posting details as I will NOT be selling these and anyone if free to copy it for their own personal use. This will likely take a while as I have been very busy trying to get other work done. But I will keep the thread updated.
    McMaster-Carr

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    I had to look it up, Davit Arm is more or less a jib crane.

    Yes would like to see more progress and build.

    What kind of arm length and capacity are you aiming for?

    Tangential: I've done some with the concrete foundation types and modified a Gorbel that interfaces with my welding bench...cut about 4 feet out of the tube to get the right height for me. Its only a 250# capacity. Yea I know that arm says 125 but its identical in every aspect to a 250#, I have compared thoroughly and it supports my big ass hanging off the end...so...


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    Quote Originally Posted by Hardplates View Post
    I don't have an assembly competed yet. I'm sort of used to Solidworks with building individual parts which apparently isn't how Fusion was designed..
    -I use SolidWorks, thought your screen shot looked like it. Never used Fusion so I have no reference. I thought most of the solid modeling programs (mostly) were either object>action or action>object in command sequence, the only difference being icons. I guess not. I look forward to progress when you have the time to do so from you or anybody else that's done a similar project.


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