1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Giant mining excavators

Discussion in 'Excavators' started by miningtrucks, Sep 9, 2009.

  1. miningtrucks

    miningtrucks Active Member

    Joined:
    Jun 12, 2008
    Messages:
    42
    Location:
    EFFINGHAM
    i found these awesome photos of giant mining excavators and they aren't mine but i give credit to the orignal photographer
    first up is the massive Liebherr R9800 and next to a truck
    next is the awesome Komatsu PC8000 in backhoe form
    next is Komatsu PC5500 backhoe
    last is not much of a giant but it is the awesome Komatsu PC1600 backhoe
     

    Attached Files:

  2. miningtrucks

    miningtrucks Active Member

    Joined:
    Jun 12, 2008
    Messages:
    42
    Location:
    EFFINGHAM
    and can any one tell one what make and model of crane is in the Komatsu Pc8000 photo
     
  3. diggerop

    diggerop Well-Known Member

    Joined:
    Jul 19, 2008
    Messages:
    159
    Occupation:
    Plant operator, coal mining/ 25 years
    Location:
    QLD , Australia
    That Komatsu has a trailing electrical cable. Are they trying electric power in a hydraulic machine??
     
  4. alco

    alco Senior Member

    Joined:
    Apr 7, 2006
    Messages:
    1,251
    Location:
    here
    I wouldn't say they're trying it, electric powered hydraulic machines have been around for many years and are more common than you may think. Personally, I think it defeats the biggest advantage the hydraulic machines have, and that's ease of mobility.....but that's just me.

    Brian
     
  5. dozerdave

    dozerdave Well-Known Member

    Joined:
    Jun 19, 2009
    Messages:
    182
    Location:
    Philippines
    Hi miningtrucks,

    Super pictures.

    I operated a 992A in a spillway years ago and the big gun there was a Bucyrus 280B which was electric. There was no hydraulics on the shovel, all cables. The electric line was attached to towers and was never a serious problem. The support equipment passed under the elec. line. I don't remember the bucket size on the 280B but there was no way the 992 would load truck for truck with the shovel.
     
  6. Bumpsteer

    Bumpsteer Senior Member

    Joined:
    Sep 2, 2009
    Messages:
    619
    Occupation:
    Mechanical designer
    Location:
    mid Michigan
  7. Ross

    Ross Senior Member

    Joined:
    May 30, 2007
    Messages:
    357
    Location:
    In the Rockies
    100% agree .. Thats one of the advantages of the Hydro machine is it's mobility ..

    Anyhow .. so nice pics .. :cool:
     
  8. miningtrucks

    miningtrucks Active Member

    Joined:
    Jun 12, 2008
    Messages:
    42
    Location:
    EFFINGHAM
    found a picture of the R996 backhoe being transported and thought you guys would like to see it
     

    Attached Files:

  9. Hendrik

    Hendrik Senior Member

    Joined:
    Mar 6, 2009
    Messages:
    1,232
    Location:
    Adelaide South Australia
    That's one tough low loader, carrying an excavator and pulling a Mack truck along.
     
  10. blueman

    blueman Well-Known Member

    Joined:
    Apr 3, 2009
    Messages:
    45
    Location:
    NC
    As someone else said, big cable shovels have been electric a long time.
    It's been an available option on hydraulic shovels for a long time, too, but really took off the last 5-8 years. It reduces mobility for sure, but for coal/lignite mines with the powerplant right next door offering cheap juice, it offers a hell of an economic advantage and a very long service life.
     
  11. Ryanrb25

    Ryanrb25 Well-Known Member

    Joined:
    Jul 16, 2009
    Messages:
    146
    Location:
    Australia
    i hope your not serious :)

    That mack is actually assisting by pushing. You can see they've put weight on the rear of it for traction.
     
  12. JDOFMEMI

    JDOFMEMI Senior Member

    Joined:
    Jan 4, 2007
    Messages:
    3,074
    Location:
    SoCal
    I'm pretty sure there was just a hint of sarcasm at work there in Hendricks statement

    Don't take it too seriously.:drinkup
     
  13. dozerdave

    dozerdave Well-Known Member

    Joined:
    Jun 19, 2009
    Messages:
    182
    Location:
    Philippines
    Heavy power feels good.
     
  14. Hendrik

    Hendrik Senior Member

    Joined:
    Mar 6, 2009
    Messages:
    1,232
    Location:
    Adelaide South Australia
    Just a feeble attempt at humour:D:D
     
  15. 95zIV

    95zIV Senior Member

    Joined:
    Mar 12, 2006
    Messages:
    795
    Occupation:
    RR Contractor Super.
    Location:
    Cincinnati, OH
    Don't worry Hendrik,

    I understood immediately what you meant, besides you hafta go with the old saying:

    It's the unlucky dog that gets a new Mack, or any Mack. :tong
     
  16. Chris5500

    Chris5500 Well-Known Member

    Joined:
    Oct 23, 2009
    Messages:
    217
    Occupation:
    Plant Mechanic
    Location:
    Australia
    One of the main advantages of the electric drive excavators is the extended life of components such as the pump drive gear boxes (Pump distributor gear, PTO, whatever tickles your fancy) and the hydraulic pumps due to the absensce of the surge you would commonly get from an engine. Off the top of my head a PC8000 generally gets between 14-16,000 hours out of the life of a main hydraulic pump (The factory reckons 18,000 but I have yet to see one) with the electric drive you would probably get around the 20,000. And just for the sake of people interested, Liebherr 996's get around about the same life out of a pump (The pumps are exactly the same make and model on both the Komatsu PC5500-6 as the Liebherr 996 - Rexroth A4VSO 500 LR3DN / 30L) ;)
     
  17. alco

    alco Senior Member

    Joined:
    Apr 7, 2006
    Messages:
    1,251
    Location:
    here
    The problem with that, is that a hydraulic machine needs to be more mobile to compensate for it's inherent lack of reach. Therefore, to be able to produce effectively, it needs to be free of it's trail cable and able to move quickly around the pit. While the electric drive may extend component life, it tends to slow the machine down production wise. That was why I was saying the biggest advantage is mobility. Now, which one balances out to be more cost effective? I really have no idea. I guess it would depend on the mine and all of it's requirements. I would have to say though, if it was me, I would tend to favour electric driven cable machines with a diesel powered hydraulic machine or two thrown in for utility work. That of course assumes that the mine life would be long enough to warrant going to cable shovels.
     
  18. Chris5500

    Chris5500 Well-Known Member

    Joined:
    Oct 23, 2009
    Messages:
    217
    Occupation:
    Plant Mechanic
    Location:
    Australia
    I agree there alco, my personal preference would be a diesel hydraulic, like you said, kinda defeats the whole object of mobility, especially on a backhoe which typically sit on a bench which is rough, blasted rock or when climbing the bench, cant be good for the cable reel, different story on a face shovel though.
     
  19. alco

    alco Senior Member

    Joined:
    Apr 7, 2006
    Messages:
    1,251
    Location:
    here
    No doubt, I know how much of a pain it is to drag a cable around with a shovel, and I spend most days on a diesel RH200, so I tend to think the same for the shovel as well.
     
  20. Chris5500

    Chris5500 Well-Known Member

    Joined:
    Oct 23, 2009
    Messages:
    217
    Occupation:
    Plant Mechanic
    Location:
    Australia
    All of the PC8000-6 E's (4 in total) at Cerrejon Coal mine in Colombia have been converted from backhoe configuration to face shovel configurations.

    Here's a pic of another, newer PC8000-6 E face shovel at a La Loma Coal mine in Colombia the shovel is owned by the Drummond Company, Inc. which is a privately owned company based in Birmingham, Alabama, United States.
     

    Attached Files: