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Overhead cranes

Discussion in 'Cranes' started by lapoderosa7, Aug 13, 2013.

  1. lapoderosa7

    lapoderosa7 Member

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    hi there! do u know the difference between a Gantry crane and an overhead crane? overhead crane is more a general type of cranes, isnt it? tx,
     
  2. lowbed driver

    lowbed driver Well-Known Member

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    Overhead cranes run on tracks that are up in the air on a building or held up with their own structure. A gantry is a crane that runs on its own wheels on tracks and some on rubber tires that are steerable. Cheers Lowbedder
     
  3. Knocker of rock

    Knocker of rock Well-Known Member

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    Location:
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    Most simply, overhead has the rails ay an elevated height. Gantry has the wheels, rails or rollers at ground height.

    Variations and hybrids exist
     

    Attached Files:

    Last edited: Aug 13, 2013
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  4. lapoderosa7

    lapoderosa7 Member

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    hi! wow, thanks for the swift and accurate replies, very appreciated, now it is pretty clear thanks to you!
     
  5. catkicker

    catkicker Well-Known Member

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    Crane Operator
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    Catkickastan
    Never thought I would need NCCCO certs to run one of these. But I'm not one to pass good money up.
     
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  6. Cgmachineryvn

    Cgmachineryvn Member

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    CEO
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    Wow, i have other simple explation: Overhead crane is for differentiate with suspension crane. Meanwhile, gantry crane is gantry which can move similar to overhead crane, suspension crane but it has two legs, running on the ground. It is very simple to search these pictures on google.
    You can also visit website http://cgmachinery.com.vn/ to check out the differences.
     
  7. cranes101

    cranes101 New Member

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    Location:
    Monterrey Mexico
    In addition to the comments above; the gantry design is typically found in outdoor applications primarily due to the absence of a building and runway structure. A building is not needed because the gantries legs and wheels. You can still have a gantry crane run on a floor based rail system using steel wheels, or the gantry can run directly on the ground or smooth floor using urethane wheels. There is also another crane design commonly referred to as a semi-gantry. This design has one end of the bridge running along an elevated runway system (like an overhead travelling crane normally would) and the opposite end of the bridge has a leg and wheel assembly. See Picture Below:

    Semi Gantry.jpg

    __________
    -Jose
    http://www.munckcranes.com.mx/
     
  8. trombeur

    trombeur Senior Member

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    in a nautical shop use this gantry crane built by hand for maintenance and storage of the hulls of boats, the structure is made of steel beam with swivel wheels to which hangs a common manual chain hoist
    What do you think of this realization DIY DSCN3476.JPG
    DSCN3473.JPG DSCN3473.JPG DSCN3474.JPG DSCN3475.JPG
     
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  9. old-iron-habit

    old-iron-habit Senior Member

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    Retired Cons't. Supt./Hospitals
    Location:
    Moose Lake, MN
    Years ago we used to erect what was then called gantry cranes on buildings to remove the tower cranes after the building was up. Oftn back then the towers came up thru the high rise instead of along side as is common today. They usually had only a small swing radius to lift the tower crane pieces and them set them down over the building edge. The gantries were made to hand tear down and bring down the elevators. Later they called them stiff leg gantrys which I felt was a more accurate discription. They resembled a small rock quarry stiff leg but tied to the building steel instead of guy wire supports.
     
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  10. trombeur

    trombeur Senior Member

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    la gru si menzionato credo che il suo nome Derrick, o gin pole mi sbaglio? I รจ usato come supporto nei trapani trapani, se mi sbaglio chiedo di correggere me vi ringrazio per l'attenzione

    [​IMG] [​IMG]

    [​IMG]

    [​IMG]
     
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  11. old-iron-habit

    old-iron-habit Senior Member

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    Retired Cons't. Supt./Hospitals
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    Newer looking but they were a lot like the bottom picture, but electric powered. We even used one that in order to swing we had to turn a crank thru gearing. No boom up or down, just set the boom angle during erection and that was the boom angle. The winch drum with enough 1/2" line to 4 part it to the bottom of a 20 story building was the biggest piece by far. The structural engineers would design the attachment points into the building steel.
     
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  12. trombeur

    trombeur Senior Member

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    homemade frame gantry crane hoyst FSCN2095.JPG
     
  13. Hank R

    Hank R Senior Member

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    Occupation:
    Retired Truck driver and School bus driver
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    Princeton B.C. Canada
    In BC here work safe made us weld a leg on to base near each wheel incase we blew a wheel or remove from shop. in 30 years only used 3 times at most.
     
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  14. trombeur

    trombeur Senior Member

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    would you have some illustrative photos?
     
  15. Hank R

    Hank R Senior Member

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    Retired Truck driver and School bus driver
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    Princeton B.C. Canada
    Went to get a picture but it was sold at a surplus sale 2 years ago. We jut welded I beam about a foot away from wheels and left 1in off floor.
     
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