ANSI CEMA-402-2003 pdf download

01-20-2023 comment

ANSI CEMA-402-2003 pdf download Unit Handling Conveyors
Anti-Backup Protective Device–A device to prevent reversal of a loaded inclined belt when power is shut off. Some types which may be employed are as follows:
1. Eccentric pinch roller or rollers on the return run
2. Brake motor
3. Ratchet and pawl, or overrunning clutch, on a shaft of the drive
4. Self-locking worm gear reducer
5. Roller clutch backstop in gear reducer
Anti-Overrunning Device–A brake or other device used to prevent a loaded declined belt from running when power is shut off.
Bed, Conveyor–That part of a conveyor upon which the load or carrying medium rests or slides while being conveyed (see Figures, Page 5).
Bed, Roller–A bed utilizing a series of rollers and channels used to support a conveying medium.
Bed, Slider–A bed utilizing a stationary surface to support a conveying medium.
Conveyor Width–(a) Roller Bed: The dimension inside to inside (BF) of frame rails (see dimension A, Figures 1 and 2, Page 5); (b) Slider Bed: The dimension inside to inside (BF) of frame rails (see dimension B, Figures 3, 4, and 6,Page 5). Overall width (OAW) of the bed (see dimension C, Figures 1, 2, 3, 4, and 6; dimension B, Figure 5, Page 5).
Curve, Horizontal Belt–A curved conveyor section equipped with a curved belt to change the direction of travel. The curved radius is measured to the inside face of the inside frame rail. The hand of the curve is determined when facing in the direction of travel.
Drive–An assembly of the necessary structural, mechanical, and electrical parts which provide the motive power for a conveyor.
Gravity Feeder–Conveyor bed of closely spaced wheels or rollers used to transfer unit loads from gravity flow to incline belt conveyor or from decline belt conveyor to gravity flow.
Guide Rails–Members paralleling the path of a conveyor and limiting the product on the conveyor to movement in a defined path.
Metering Conveyor–A short powered conveyor whose speed and motion are controlled to release unit loads at a predetermined rate.
Nose-Over–Curved or segmented frame sections having rollers properly spaced to provide a transition from incline to horizontal or from horizontal to decline.
Pop-out Roller–A special load carrying roller mounted in such a manner as to pop out when foreign objects are introduced between the belt and the roller; usually located adjacent to the drive or tail pulleys.
Powered Feeder–Short power conveyor generally used for in-line transfer of unit loads from horizontal to incline or from decline to horizontal (see Figure 13, Page 7).

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