| CONVEYOR
LENGTHS Standard Model 650 Lengths are as shown in Table "A"-- other lengths are available on
application.
ANGLE OF INCLINE
Variable. Minimum angle is 3o to 4o (depending upon length), and
maximum angle is 18o to 20o (depending upon length). Stockpile
capacities and horsepowers are based on 18o.
CONVEYOR FRAME
MARCO Series 361 and Series 601,
depending upon length.
ASSEMBLY BOLTS
Acid cleaned and plated.
UNDERSTRUCTURE
Structural design provides for Self-Supporting Understructure which is independent of
Conveyor Truss. Special Heavy Duty Tail Pivot Assembly is included.
WHEELS
Single or Dual Pneumatics.
ELEVATING WINCH
Includes Single Drum Reversing Winch, Crane & Hoist Duty TEFC Motor (230-46OV),
Electric Brake. All components are direct connected (eliminating Vee Belts, Roller Chains
and external Couplings) to provide positive torque transmission. Brake holds Conveyor at
given elevation.
SUSPENSION SYSTEM
Conveyor is connected to the Understructure through a fulcrum at the Tail Pivot
Assembly and Wire Rope and Sheave Suspension (with extra reeving to minimize "line
pull").
LIMIT SWITCHES
High and Low level Limit Switches are provided to prevent "vertical
over-travel".
*PULLEYS
MARCO Pulleys have machined faces to ensure concentricity with the bore, and are
equipped with Taper-Iock or Q.D. Bushings. Pulley faces are 4" wider than Belt.
* For Shaft sizes and Bearing specifications,
consult Factory.
HEAD PULLEY LAGGING
All Head Pulleys are lagged with 3 ply, Ruff Top Rubber Lagging, installed in multiple
widths to ensure conformity to crowned face. Slide lagging or vulcanized lagging is
available.
IDLERS
MARCO Series MI5--4 1/2"' dia. pre-lubricated Ball
Bearings which require no further lubrication. Troughing Idlers are spaced on 4'-0'
centers with two extra at the loading point; Return Idlers are spaced on 10'-0' centers.
35o Idlers are standard, 45o are optional.
*BELT TAKE-UP
80'-100' Lengths-Screw type, acid cleaned and plated,
providing 21" adjustment.
125'-150' Lengths-Equipped with Gravity Take-Up with
12" dia. Bend Pulleys. 18" dia. Sliding Pulley. Gravity Take- Ups are equipped
with Cage and Slide Rails and "Saddle type" Take-Up Boxes.
* For Shaft sizes and Bearing specifications, consult
Factory. |
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RETURN
BELT WIPER (OPTIONAL) "Plow Type",
equipped with Gum Rubber Flashing and mounted in front of Tail Pulley to prevent entrance
of material between Return Belt and Pulley. The Wiper is integral with the Screw Take-Up,
providing fixed relationship between Wiper and Pulley regardless of Take-Up setting. Not
furnished with Self-Cleaning Pulley.
HEAD END BELT WIPER
Equipped with Double Rubber Squeegee and adjustable tension
springs, providing constant pressure on Belt surface. Mounts under Head Pulley for
greatest efficiency.
LOADING HOPPER
Loading Hopper is 5' long and 8" in depth, and it is
equipped with adjustable Gum Rubber Flashing. A 4' Conical loading Hopper (mounted on Tail
Pivot) provides liberal target for the transfer of material.
WALKWAY BEAMS
In its lowest position, Model 650 may be serviced from
grade. Therefore, Walkway Beams are not required.
CONVEYOR DRIVE
Drive includes Shaft Mounted Helical Gear Speed Reducer
(Gears are enclosed and running in oil), Driver and Driven Sheaves and Vee Belts. All
Drive components are selected to adequately transmit horsepowers.
BACKSTOP
A Backstop is provided. Mounts in the Reducer and runs in
oil.
ELECTRIC MOTOR
1800 RPM, TEFC, Nema Design "C", Hi-Torque, 3
phase, 60 cycle 230-460 volt.
POWER PROPELLING DRIVE: (OPTIONAL)
Provides wheel speed of 34 to 39 FPM (3.6 RPM). Horsepower
as shown in Table "A". Drive includes TEFC Motor (230-46OV), Electric Brake
(suffix "E"), or Time Delayed Electric Brake (suffix "DE"), Starting
Torque Dampener, Gear Reducer, Chain Drive with Guard, and Forward-Reverse. Starter not
included.
OSHA-MSHA GUARDS
Protective Pulley and Drive Guards, constructed of expanded
metal, are included as standard.
OPTIONAL ACCESSORIES
- Self-Cleaning TaiI Pulley (Eliminates Return Belt Wiper)
- Hinged Conveyor Housing
- Wind Guards
- Alternate Idler Spacing
- Impact Idlers at loading point
- Starters and Push Button Stations
- 45o Troughing Idlers
- Walkway
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