ASME B20.1-2018 pdf download.Safety Standard for Conveyors and Related Equipment.
4 ð18Þ DEFINITIONS 1 accessible: applies to hazardous objects not guarded or isolated and likely to be contacted inadvertently. actuator: a device that initiates the action of controls or controllers andis manuallyoperated. Theactuatormaybe a push button, toggle switch, footpedal, hand lever, hand- settimer, or anyother device thatperforms the described function. antirunaway: a safety device that stops a declining, inclined, or vertical conveyor and thus prevents it from moving away in the event of a mechanical or elec- trical failure. apron pan: one of a series of overlapping or interlocking plates or shapes that, together with others, form the conveyor bed. automatically controlled: describes the operation by the actionofamechanismthatisinitiatedbysomeimpersonal influence, such as a conveyor thatis started bya low-level bin indicator. backstop: a mechanical device to prevent reversal of a loaded conveyor under action of gravity when forward travel is interrupted.
conveyor, electrifiedmonorail:aconveyorconsistingofa networkoftracks orguide rails thatmaybe installed hori- zontally, vertically, inclined, orincombinationwithone or more self-propelled cars or trolleys that move indepen- dentlyunder automatic control from one pointto another within the track network, carrying material in containers or by devices suspended from or attached to the cars or trolleys. conveyor, en masse: a conveyor, comprised ofa series of skeleton or solid flights on an endless chain or other linkage, that operates in horizontal, inclined, or vertical paths within a closely fitted casing for the carrying run. Bulk material is conveyed and elevated in a substan- tially continuous stream with a full cross section of the casing. conveyor, extendable: a conveyor that may be length- ened or shortened to suit operating needs. conveyor, flight: a type ofconveyor comprised ofone or more endless propelling media, such as chain, to which flights are attached and a trough through which material is pushed by the flights.
conveyor, folding belt: a bulk materials trough belt conveyor that has a longitudinally grooved belt cover. These grooves allow the outer edges of the belt to form flaps. These flaps are folded over the conveyed product on the carry side of the conveyor enclosing the product. The flaps are held in place on top of the product by containment idlers. Folding belt conveyors enclose the conveyed material on the carrying side and contain carryover material on the noncarrying side. conveyor, horizontal reciprocating: a conveyor that progressively advances material by a back-and-forth motion of its conveying medium. It may be equipped with hinged flights or tilting dogs or pushers. These units operate generally in the range of 0 deg to 30 deg from the horizontal. conveyor, inclinedreciprocating: a reciprocatingpower- orgravity-actuatedunit(notdesignedto carrypassengers or an operator) that receives objects on a carrier. These unitsoperateoninclinesgenerallyintherangeof30degto 70 deg from the horizontal. conveyor, live roller: a series of rollers over which objects are moved by the application of power to all or some of the rollers. The power-transmitting medium is usually belting or chain.ASME B20.1 pdf download.