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Bucyrus International, Inc.
     
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Conveyors
Chains, Chain Drives
Haulage Systems
Main, Auxiliary Drives
Entry Conveyors


Conveyor System Components

Face Conveyors



 

 

Face conveyors are the backbone of any longwall: They act as the guide for the plow or shearer and as an anchor for the advancing roof supports. High-performance Bucyrus face conveyors are the most powerful transport systems in underground mining. In service worldwide, Bucyrus face conveyors have achieved haulage rates of 5,000 t/h – and even greater at peaks.
 
The Bucyrus PF range offers the right line pan to meet all longwall requirements: The PF 3 for capacities up to 2,000 t/h and the PF 4, PF 5 and PF 6  line pans for higher capacities.

Specifications for AFC Line Pans

PF6 Line Pan
The PF 6 is particularly suitable for mining in very long panels in deposits of 20 million tonnes and more.

The PF 6 and PF 5 were specially designed for use in difficult geological conditions such as abrasive mined material or seams with difficult adjacent rock. The modular design of the PF 6 separates extremely wear-resistant parts (i.e. sliding surfaces) of hardened rolled steel and the supporting substructure made of more elastic steels. This means that cracks in wear parts are unproblematic for the integrity of the line pan, allow simple reconditioning, and guarantee long wear resistance and high stability.

• Line pan width up to 1342 mm
• Capacity of up to 5,000 t/h
• Optimized line pan profiles ensure even distribution of wear
• Deflection of ฑ 6ฐ vertical und 0.8 up to 1.2ฐ horizontal (PF 6),ion to 
  undulating seams
• Externally welded dogbone pocket does not compromise the
  stability of the line pan
• Dogbone acts as predetermined breaking point under extreme
  distortion, preventing damage to line pan
• Replaceable top trough, allows renewal of wear and sliding
  surfaces
• Basic line pan service life independent of service life of top trough
• State-of-the-art robot welding technology



Conveyor Chains and Chain Drives

Chains designed by and exclusively manufactured for Bucyrus deliver high efficiency and low chain, chain sprocket and conveyor wear. We have continuously improved the design of our chains and chain sprockets over decades, taking their performance to new heights.

• The GR chain sprocket always uses three teeth simultaneously to
  transmit drive force, increasing efficiency from 93% to 97%
  compared to conventional chain sprockets
• Our 42mm and 48mm chains have been the standard for years –
  our new Power Chain opens up new dimensions for face
  conveyors and productivity.  The Power Chain high-performance
  chain is available in sizes up to 52 mm for drive power up to  3 x
  1200 kW. Currently, our engineers are testing the latest model of
  the Power Chain, designed for drive power of up to 3 x 1800 kW !


Haulage Systems for Shearers

Bucyrus offers shearer haulage systems with chain and rackbar drive. In the planning phase, our engineers work with the customer to select the most suitable haulage system for the seam, taking drive forces and the inclination and/or undulation of the seam into account.

• Jumbotrackฎ (rackbar drive)
• Jumbotrackฎ 2000 (chain drive)
• Travel path on the line pans adapt shearer requirements



Main and Auxiliary Drives













The drive frames of the high-performance systems are an important element of the conveyor. At either end of the conveyor they provide the mount for the chain sprockets which transmit the drive power of 2 x 1200 kW at the main drives and 1 x 1200 kW at the auxiliary drive.

Both drive frames are designed that, regardless of the direction of mining, they can be used in a left or right-hand longwall faces.

Main drive
• Transfer at main drive via cross-frame, side removal, front removal
  or rollcurve
• Cross frame with two drives, each 1200 kW
• Dimensioned for a conveyor capacity of 6000 t/h
 
Auxiliary drives
• Installed power up to 1200 kW
• Tensionable drive with up to 1.0 m stroke to prevent slack
  chain and high wear
• Automatic setting of optimum chain tension during operation
• All components designed for installed power of 650,000 Nm


Entry Conveyors

Bucyrus entry conveyors – and integrated crushers and tailpieces – are designed to meet the same high performance standards as our face conveyors. This avoids unnecessary bottlenecks in material flow as all components work in perfect harmony.

Specifications for Stageloader Line Pans

• Conveyor capacity of up to  6000 t/h at a speed of 2.03 m/s
• Maximum width of conveyor  1742 mm
• Installed power 1 x 522 kW