Page 5 of 8 FirstFirst ... 34567 ... LastLast
Results 101 to 125 of 200

Thread: Gantry Crane

  1. #101
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    (I have a small lateral scar on my forehead......had it since I was 16yrs old. It came from a cobbled together overhead lifting thingy to take a pickup bed off the delivery flatbed that brought it to the house. Thing collapsed, and I had a compression cut when a piece of wood came down and hit me. Took a ton of stitches..........so I take overhead stuff very seriously)

  2. Likes _Weldman_ liked this post
  3. #102
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    My Dad rushed me to the ER, and they repaired it. I was given a local, and they put a cloth over my eyes. I was a teaching subject that day The dood doing the work was lecturing as he worked. I actually got lucky..........he repaired each layer..............most times, they would just have stitched the outer layer, and you'd have a huge scar for the rest of your life. Right place, at the right time.

  4. Likes _Weldman_ liked this post
  5. #103
    Join Date
    Dec 2018
    Location
    Southern California
    Posts
    924
    Post Thanks / Like

    Re: Gantry Crane

    Good score!

    A good pipe fitup clamp can be a real time saver on the bigger stuff. Makes minor adjustments oh so easy and controllable.

  6. #104
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by SlowBlues View Post
    Good score!

    A good pipe fitup clamp can be a real time saver on the bigger stuff. Makes minor adjustments oh so easy and controllable.
    The tooling for pipe is blowing me away. Lot of specialized stuff.

    We were looking at the multiple steel sawhorses I use for fabrication, and I came up with an add on that would work for pipe, in a pinch. I'm not sure whether I'll go that way. I am tired of welding, and I'm not sure I want to put more hours into making pipe stands that adapt to the sawhorses. It's just so much easier to go out, and just buy the things.

  7. #105
    Join Date
    Dec 2018
    Location
    Southern California
    Posts
    924
    Post Thanks / Like

    Re: Gantry Crane

    Working in construction all my life (in an area with famous winds) I've seen first hand what even a small piece of roof tile can do from height, let alone a tool or a larger/heavier piece of anything.

    Not many people realize the forces at play vs your relatively soft body.

    Even a piece of 10lb steel dropped from waist height can be the end of your toes or foot, especially if it lands perfectly to do damage.

    6 story wood framed buildings are the standard here in earthquake land (I know), if built correctly with correct respect for the situation at hand wood is just as safe as steel.

    You learn to read the situation and do your best to stay out of the "danger zone", but accidents and "freak events" happen.

    I've had many close calls that could have been serious, and it really leaves an impression on one about safety (unless you're the darwin award type).

    I noticed most accidents where the victim is at fault seem to happen doing "not very dangerous" everyday, mundane stuff. People are extra careful and pay attention when doing something dangerous, and as such think it out and have a backup plan in mind if things go bad. It's the 300th basic cross cut of the day that usually bites people, not hanging over the edge like a monkey to cut a rafter.

  8. Likes _Weldman_, Munkul liked this post
  9. #106
    Join Date
    Dec 2018
    Location
    Southern California
    Posts
    924
    Post Thanks / Like

    Re: Gantry Crane

    Yeah I know when I have lots of work ahead of me even thinking about adding to it is a burn out. I would just buy the tools and sell whatever you don't want to keep.

    Pipe tools are a harder sell around here but I imagine they're much more in demand in your area.

  10. #107
    Join Date
    May 2014
    Location
    Central Wa. state
    Posts
    5,096
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by farmersammm View Post
    The tooling for pipe is blowing me away. Lot of specialized stuff.

    We were looking at the multiple steel sawhorses I use for fabrication, and I came up with an add on that would work for pipe, in a pinch. I'm not sure whether I'll go that way. I am tired of welding, and I'm not sure I want to put more hours into making pipe stands that adapt to the sawhorses. It's just so much easier to go out, and just buy the things.
    What kind of "tooling" do you need for this one-off job? I used to build huge irrigation manifolds with nothing but blocks, levels and shim wedges. You're overthinking again.

  11. Likes Munkul liked this post
  12. #108
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    B&B stands, the folding ones, are $80.10 at the LWS. Better price than you can get online. I sorta feel bad about bypassing my LWS for the steel, especially after a lengthy bid/quote process...........so I'm thinking of buying the stands from them. Been dealing with these guys for over 2 decades, and it sometimes goes beyond business..........they've given me hay, and other stuff, when things get tight. It's a one hand washes the other thing. I do favors for them too. It's a 50/50 thing.

    I was in, looking for drops.........1" plate. Guy gives me a piece on the condition that I don't come in and pizz and moan for a month. (I'm known for that). 100# piece of plate. That's very cool.

  13. #109
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by 12V71 View Post
    What kind of "tooling" do you need for this one-off job? I used to build huge irrigation manifolds with nothing but blocks, levels and shim wedges. You're overthinking again.
    We have about a dozen H's, and corners to do this Winter. And a cattle guard. I suppose the stands would come in handy. Used stands sell about for what you paid for them here. Lot of rig welders around here.

  14. #110
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    And, I'm just plain tired. I mean tired. I'm tired of messing with this stuff.

  15. #111
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    They took a urine culture a few days back...........................stuff looked like milk it was so cloudy.

    Call me today, and say not enough growth was observed on the culture, come back in 7 days for a repeat. Lung CT is still about 2 weeks out, and the other stuff is just as delayed. I'm sick of the whole thing, and sick of this sht too. I'm not in the mood to be "creative" these days.

  16. #112
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    DAmn incopetent idiots tell me maybe nothin's wrong.

    I have pain in my right side, above the hip, can't move mostly. Been in the sack for most of the past 3 days, other than climbing out for this stinkin' project.

    Cant' stand up without almost blacking out.....................'well, your heart scan just shows plaque, not a complete blockage"

    I'm tired of the sht, and I'm just tired of it all. F'n morons.

  17. #113
    Join Date
    Dec 2018
    Location
    Southern California
    Posts
    924
    Post Thanks / Like

    Re: Gantry Crane

    Sammm, if you haven't perhaps you should try 1-3 cups of parsley tea daily, with honey added to taste.

    Apparently parsley tea has long been known to have medicinal effects, especially for the urinary system.

    https://willamettetransplant.com/parsley-tea/ there are different recipes floating around.

    My father is, and always had been exceedingly fit and healthy. A couple years ago he began having mystery, seemingly random symptoms of not feeling well, not being hungry (food tasting awful as well), having aches from his side, back, or hips, sometimes with flu like episodes that only lasted hours. Shortly after that he began having prostate type problems, and the symptoms got worse with advanced UTIs. Finally we convinced him to go see the doctor.

    Well, Many dcotors, specialists, scans, tests, blood work, and courses of just about every UTI effective antibiotics they could come up with and the symptoms would gradually return. His prostate was normal and healthy according to all tests (prostate problems do run in his family), and all of his other numbers were great. The little faith he had in doctors to begin with and his hope of ever getting better (he could still work, but everything was getting worse) began the dwindle.

    My brother has a friend that he plays online games with -first person shooter type stuff. He randomly mentioned something about my father's condition and they recommended parsley tea, and how it was the only thing that helped a close family member of theirs with similar symptoms and medical results - a short recovery only for things to get worse again and no one knowing what or why.

    Amazingly, in a couple of days the UTI type symptons started to ease, and in a week and a half my father passed some of the largest, and oddest stones I have ever seen (one was like the shell of a broken egg!), and his symptoms rapidly improved to about 80% he says, with a continued improvement to maybe 90%.

    I'm not assuming stones are your issue (my father had every scan and was assured he had none), but it's cheap and common enough it might be worth a try for you.

    He still gets some minor symptoms creeping up every now and again, and usually takes about a 2 week course of the tea and he says he is good for some months after.

    I would not have believed the results of the tea had I not seen it for myself, I'm a big believer in science over wives tails, but the proof was right there.

    We would generally buy the dried parsley in the spices section bc it was easier/faster to measure, handle, and keep. Add some to a coffee filter (we would use the metal mesh type) and brew it with boiling water run through it into a cup.

    Good luck and If you decide to give the tea a try let us know if you notice any improvements.
    Last edited by SlowBlues; 08-31-2021 at 03:07 AM.

  18. Likes farmersammm liked this post
  19. #114
    Join Date
    Feb 2019
    Location
    Snyder TX
    Posts
    235
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by farmersammm View Post
    The tooling for pipe is blowing me away. Lot of specialized stuff.

    We were looking at the multiple steel sawhorses I use for fabrication, and I came up with an add on that would work for pipe, in a pinch. I'm not sure whether I'll go that way. I am tired of welding, and I'm not sure I want to put more hours into making pipe stands that adapt to the sawhorses. It's just so much easier to go out, and just buy the things.
    With steel saw horses all you need is 6 4" steel dolly wheels, weld 'em on the top of three saws horse as rollers for the pipe. When you get done cut 'em off.

  20. Likes farmersammm liked this post
  21. #115
    Join Date
    Aug 2021
    Posts
    17
    Post Thanks / Like

    Re: Gantry Crane

    $3 a cut? got a battery grinder with a cutting disc you can take? or give your supervisor a hacksaw to cut while you load other bits?

    mind you the hacksaw option may result in fast and dramatic weight loss if you word it wrong!!

  22. Likes farmersammm liked this post
  23. #116
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Name:  crane16.jpg
Views: 359
Size:  224.2 KB

    Name:  crane17.jpg
Views: 362
Size:  213.8 KB Bought 4 joints + an 11' drop. Altogether 142'. This guy charges to the exact foot on all joints, which is cool I guess. Good people to deal with.......................I get there, and the dood tells me that he made a mistake on the quote. It should have been $5.50/ft, but he said it was his bad, and honored the quote. Don't see that very much these days.

    Name:  crane18.jpg
Views: 353
Size:  234.3 KB Decent lunch took some of the pain out of dropping about $675.

    Name:  crane19.jpg
Views: 353
Size:  200.7 KB Right across the road from Carl's Jr. After spending all that money today, I just looked at the store out of the window while I ate lunch. They weren't getting any of my money today.

    Anyways, if I need anymore pipe, these will be the go-to guys. Their stuff is pristine, and the attitude is great. Was a real pleasure doing business with them.

  24. Likes whtbaron, _Weldman_ liked this post
  25. #117
    Join Date
    Mar 2015
    Posts
    222
    Post Thanks / Like

    Re: Gantry Crane

    First of all casing won’t show up on a pipe chart casing is figured by the pound unlike pipe which is figured by schedule
    For example 4 1/2 11.60# is almost the same as 4 1/2 sch 40 . But casing has alloys etc in more so than pipe ! You can tell the grade of casing by the color of the collar .
    I read your part about lifting things and getting hurt so be careful with folding stands I am not saying they are bad I had some bad experiences with some folding stands so be careful on uneven or muddy ground
    Pipe isn’t hard basically a good center finder couple good squares some torpedo levels and tape measure remember your not building a piano
    And remember pipe pulls a lot when welded on the side so keeping things square is always a problem don’t overthink it ! You can always tack a piece in between to help hold things . A good wire feeder is a plus too cause your gonna have gaps I always try to tack things together before I start welding the whole thing up. I will tell you it is easier to buy the patterns then it is to make them all out of the book and you will find you will use them way more then you think once you have them .

  26. Likes farmersammm, _Weldman_ liked this post
  27. #118
    Join Date
    Mar 2015
    Posts
    222
    Post Thanks / Like

    Re: Gantry Crane

    Also a nice straight piece of angle iron to draw straight lines down the sides of the pipe so that your pattern can be put on exactly the same spot every time or you can measure and go 90 degrees or 180 degrees off of center

  28. Likes farmersammm liked this post
  29. #119
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by Leogl View Post
    First of all casing won’t show up on a pipe chart casing is figured by the pound unlike pipe which is figured by schedule
    For example 4 1/2 11.60# is almost the same as 4 1/2 sch 40 . But casing has alloys etc in more so than pipe ! You can tell the grade of casing by the color of the collar .
    I read your part about lifting things and getting hurt so be careful with folding stands I am not saying they are bad I had some bad experiences with some folding stands so be careful on uneven or muddy ground
    Pipe isn’t hard basically a good center finder couple good squares some torpedo levels and tape measure remember your not building a piano
    And remember pipe pulls a lot when welded on the side so keeping things square is always a problem don’t overthink it ! You can always tack a piece in between to help hold things . A good wire feeder is a plus too cause your gonna have gaps I always try to tack things together before I start welding the whole thing up. I will tell you it is easier to buy the patterns then it is to make them all out of the book and you will find you will use them way more then you think once you have them .
    So, ya say pipe ain't hard??????

    You're speaking to the worst pipe welder on the planet

    This was about SEVEN YEARS AGO, when I could still see good..................haven't touched a piece of pipe since

    https://weldingweb.com/vbb/threads/4...ght=rig+welder

    Fitup is my big problem, so either the book method, or templates from the welder supply is my best bet. I ordered some paper templates, but might return them in favor of these.

    https://www.releeco.com/collections/...on-pattern-set I'm looking real hard at these.

    I also scored a used copy of Pipe Fitters & Pipe Welders Handbook + used Pipe Template Layout. Got them both for about $25. BluCllrPlt suggested the template layout book.

    Like you said................pipe stands on uneven ground, especially with the narrow tripod footprint sorta has me worried too. I have a good set of plans drawn up for some adapters that will fit my sawhorses. The acme threaded rod is reasonable at Grainger, but the nuts are out of this universe price wise............almost 9 bucks a pop for 1" nuts. Once I got to my senses, it just doesn't make sense to plop a lot of money down on premade stands..........That money will be needed for the bad motors.
    Last edited by farmersammm; 08-31-2021 at 10:06 PM.

  30. #120
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by BluCllrPlt View Post
    Iíve got both the blue book, the black book and Pipe Template Layout. IMO the best for learning to layout pipe is Pipe Template Layout.

    Attachment 1730664
    Like I said in the last post.............................you suggested it, so I snagged it.

  31. #121
    Join Date
    Aug 2011
    Location
    North Central Mo
    Posts
    383
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by farmersammm View Post
    My Dad rushed me to the ER, and they repaired it. I was given a local, and they put a cloth over my eyes. I was a teaching subject that day The dood doing the work was lecturing as he worked. I actually got lucky..........he repaired each layer..............most times, they would just have stitched the outer layer, and you'd have a huge scar for the rest of your life. Right place, at the right time.
    I got hit by a part just above my eye. The er doc said this is your lucky day i am a face specailist. He did i good job it cut the what ever opens the eye lid. I had to push my eye lid open every morning for 2 weeks but its good now.

  32. Likes farmersammm liked this post
  33. #122
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    This part of the country has a lot of oilfield work going on.

    What's been interesting me, is the number of Texas plates I'm seeing on the welding rigs. They're about maybe 50% of the work force nowdays. We notice them when we're in town. You see some pretty young doods climbing out of those trucks. Being an old guy, I now tend to admire the younger guys that actually show up for hard work.

    Anyways, when I can't sleep, I toodle around the Net, and look for some videos from these guys. I'm really impressed with the work they're putting out. It's a whole new generation coming into the workforce. I sure can't weld that good, and really like to see how they're doin' it.






  34. #123
    Join Date
    May 2012
    Location
    Ontario, Canada
    Posts
    1,433
    Post Thanks / Like

    Re: Gantry Crane

    Quote Originally Posted by farmersammm View Post
    DAmn incopetent idiots tell me maybe nothin's wrong.

    I have pain in my right side, above the hip, can't move mostly. Been in the sack for most of the past 3 days,

    Cant' stand up without almost blacking out..
    .
    Kidney stones ?

  35. Likes farmersammm liked this post
  36. #124
    Join Date
    Mar 2015
    Posts
    222
    Post Thanks / Like

    Re: Gantry Crane

    I have some metal sawhorses made out of 6 inch channel you can always bend some v heads weld screws on them cut a hole in your sawhorse put a v head in to screw up and down to level things and just to make it easy angle iron doesn’t make a good v head.you have lots of options just gotta be creative. Cribbing under one end sawhorse under other end presto you have it level reevaluate your design make sure your not doing it the hard way unintentionally. If a design is to hard to assemble and weld for one person think about ways to maybe flange it and bolt it together. I haven’t seen your design so I am only guessing I am guessing you have some prett healthy castors for the bottom this thing is gonna get heavy ina hurry

  37. Likes farmersammm liked this post
  38. #125
    Join Date
    Dec 2018
    Posts
    5,801
    Post Thanks / Like

    Re: Gantry Crane

    Column Connection
    &
    Column Loading

    First off............start with column end condition. There are various types of conditions, but the one applicable to my situation is ONE END RESTRAINED/ONE END FREE. The top of the column will be a welded assembly......tied to the crossmembers. It's not free to rotate, or move in any direction. The bottom end of the column will be free to move as it wishes..........it just sits on the ground, no crossmembers, or restraints of any kind. This is the weakest of all 4 configurations. See Machinery's, or any web description of column end conditios.

    So, I'm derated from the get go. Which is cool, no real killer.............but it's changed the design a bit. I plan to increase column diameter by 1". These also fall into the category or sort of slender columns due to the 13' height, this is another derating factor.

    LOADING CONCENTRICITY:

    Name:  crane20.jpg
Views: 174
Size:  228.0 KB I had planned on hanging the two side beams on a bracket BELOW the crossmembers. This would have resulted in an eccentric load on the column...........again, the weakest condition, resulting in increased probability of buckling. The beams have to be mounted on top of the column, with the crossmembers installed underneath the beam.

    COLUMN LOAD: Like pointed out earlier, my column end condition is the weakest type. If the columns were more securely situated, the load would be somewhere in the 44K allowable range. Length derating cuts this in half, and the end condition further derates it. So, and inch increase in diameter is not a totally ridiculous thing. Wallace cranes in the 4000# rating utilize 6" uprights, so I'm not out of line increasing column diameter to 5.5"

    FLANGE LOADING: We've been given a W6x12.5 beam. Something's been bothering me about this beam. I don't like the flange. A W beam has a relatively thin flange, compared to an S beam. This raises a question of, how much can that flange take in terms of trolley load.

    Name:  crane21.jpg
Views: 170
Size:  176.5 KB What you're looking at are the specs for either type of beam flange, and the resulting stress when a load is applied to the far edge of the flange away from the web. The analysis is not perfect, it assumes only a 4" wide "beam" held in a cantilevered position.

    What is important, is the relative stress. An S beam flange, under load, is subject to half the stress that an equivalent load on the same size W beam. This is even more problematic with the wheels that come on trolleys..........they're profiled to fit S beams. Because the wheels aren't square to the beam, this places the load on the extreme edge of a W beam flange.

    Wallace cranes do NOT utilize a W beam on their lighter duty cranes in the 4K load range. They use an S beam. W beams are used in larger capacity cranes, with larger W beams that have much thicker flanges.

    So...............I'm not using the W6 beam. I'm not happy about this, but it's my safety, not anybody else's. I have over $1000 in materials purchased about 4 years ago from the LWS. Never got around to picking the stuff up. The guy isn't real happy about this, which I can understand. Although the reason he's unhappy is really not valid. His reasoning is, that because he didn't store the material, but kept it in inventory, he's since sold it at the his cost 4yrs ago. To replace it, he's giving me steel at today's cost. He coulda just piled it in a corner of the warehouse............but I see his point too. I'll just grab some S beam from him, and get the remainder of the $ in a cash refund. He doesn't "lose" money (actually he made a profit when he originally sold me the stuff), and he actually comes out ahead at today's prices. It's a win win, and I have my beams without an additional money outlay.
    Last edited by farmersammm; 09-02-2021 at 07:23 AM. Reason: punctuation

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Page generated in 1,634,439,429.18624 seconds with 14 queries