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  1. Thread: Statics Help

    by wderrick
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    1
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    786

    Statics Help

    This is not homework. I am not a student. I am not a PE. No matter what I will be getting this looked at by a structural engineer.

    I am merely curious for my own ammusement if I am doing this...
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    Get a big transducerized nutrunner and check

    Get a big transducerized nutrunner and check
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    these steel tubes are welded to the structure? or...

    these steel tubes are welded to the structure? or do you lay the tubes into the ground tapped and then screw into them?


    I didn't really mean to focus on the fork lift... especially not on a...
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    I am here simply for mathematical engineering...

    I am here simply for mathematical engineering advice. If anyone would be gracious enought to give advice on this I would be more than grateful. I do know basic structural analysis. and would be...
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    I agree of course. Obliviously this is a verry...

    I agree of course. Obliviously this is a verry common structural approach. Which is why I was hoping someone might be like oh sure I can get you started on a good approach for estimating that...
    ...
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    Anchored Structure Analysis

    Hello Fellow Engineers,

    I'm getting log jammed by the safety department on a project and I'm hoping someone can help me do analysis to prove the project is safe (or, in fact dangerous :surprise2:)...
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    my reason for being stingy about going with a...

    my reason for being stingy about going with a bigger diameter has to do with finding bearings that work for me. If I go bigger than 2" I am pretty much left with using crane slew bearings, and I...
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    Boggs, although I am not ready to trash the...

    Boggs,
    although I am not ready to trash the turntable Idea... 375
    I was intrigued by finally having something to model off of, and I decided to try another prototype... its not done yet, but I am...
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    I didn't notice it when I saved the picture, but...

    I didn't notice it when I saved the picture, but I must have had those gussets turned off. There are 3 more gussets, two in the front, one in the back.



    I sort of agree, bolting it up is nice,...
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    here is a what I've got right now: 373 ... I...

    here is a what I've got right now: 373 ... I imagine its hard to get the full picture... the stuff going on at top is speed reduction using sprockets (50:1)... I have struggled finding a worm system...
  11. Thread: Help Plz!!!

    by wderrick
    Replies
    11
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    3,081

    ya. a mechanical stop. probably something like a...

    ya. a mechanical stop. probably something like a hand knob screw that can be positioned on your slide, or on a pivot point in your scissors.

    video didn't work for me btw
  12. Thread: Help Plz!!!

    by wderrick
    Replies
    11
    Views
    3,081

    I do not understand what you are trying to...

    I do not understand what you are trying to accomplish with the spring. Can you explain where you want to attach the spring? would it be a compression or a tension spring, or even a torsion spring for...
  13. Thread: Help Plz!!!

    by wderrick
    Replies
    11
    Views
    3,081

    Sounds like a fun project, can I assume you are...

    Sounds like a fun project, can I assume you are powering this lift with man power? or do you plan on hooking up some sort of actuator? Keep in mind that a scissor lift will require you to have a...
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    I like the C-shape because it gives me a sexy way...

    I like the C-shape because it gives me a ***y way to mount all my parts. Also I plan on utilizing the inside of the "C" as a chain safety guard.


    Mr. Pinkerton, thanks for the tips about my...
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    Assume the linearity to be taken are of in the...

    Assume the linearity to be taken are of in the fact that they are precision shafts and I will be using the loosest possible tolerances on my linear bearings, Vertical Positioning precision will be...
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    I would love to talk about the framework. Keep...

    I would love to talk about the framework. Keep in mind that the frame work you are looking at was intended for the screw (no axial load on top, only a moment load). What you see in the picture is...
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    Your force will be dependent on the moment arm...

    Your force will be dependent on the moment arm (radius) of your driven gear.
  18. Replies
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    I don't see V-wheels and other guides having the...

    I don't see V-wheels and other guides having the positioning control I'd like to achieve... especially if it was a chain system, however they could work with a screw setup. Currently the linear...
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    Mr. Bogg, I needed the idea to sink in... but...

    Mr. Bogg, I needed the idea to sink in... but upon further thinking about what you said, I am going to switch to a chain drive I believe! thanks for the great advice, I got my boss to say: "I can't...
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    You guys are great. I was quite frustrated...

    You guys are great. I was quite frustrated yesterday, because the two shaft design that you guys are recommending was my original concept (that I had drawn up two weeks ago). My boss rejected it...
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    Here is what I said this morning. It was me...

    Here is what I said this morning. It was me rejecting my current design concept and attempting to revert/discuss the concept YOU had suggested to me... (two shafts instead of one)
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    No, it would be a plunger pin located on the base...

    No, it would be a plunger pin located on the base connected to the slew bearing.




    Ok. Thanks?
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    Pinkerton, I appreciate your prompt response! ...

    Pinkerton, I appreciate your prompt response!

    Currently I plan on designing it to lock into position radially with a shear pin. Therefore, if an outside force acts on it the pin would shear and...
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    this is what I would do: The gear that is...

    this is what I would do:

    The gear that is connected to the motor is pulling the entire load tangentially as it rotates the track wheel. Therefore, the force that the the track wheel must exert on...
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    Ok, I will definitely use my full load...

    Ok, I will definitely use my full load calculation... I was worried that depending on the length of my moment arm on the green structure I may have to use a load value that is higher than the actual...
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