Crossword clues for stacker
stacker
Wiktionary
n. 1 A output bin in a document feeding or punch card machine (contrast with hopper). 2 A worker who stacks the shelves in a supermarket. 3 A participant in sport stacking.
WordNet
n. a laborer who builds up a stack or pile
Wikipedia
A stacker is a large machine used in bulk material handling. Its function is to pile bulk material such as limestone, ores and cereals on to a stockpile. A reclaimer can be used to recover the material.
Gold dredges in Alaska had a stacker that was a fixed part of the dredge. It carried over-size material to the tailings pile.
Stackers are nominally rated for capacity in tonnes per hour (tph). They normally travel on a rail between stockpiles in the stockyard. A stacker can usually move in at least two directions: horizontally along the rail and vertically by luffing (raising and lowering) its boom. Luffing of the boom minimises dust by reducing the distance that material such as coal needs to fall to the top of the stockpile. The boom is luffed upwards as the height of the stockpile increases. Some stackers can rotate the boom. This allows a single stacker to form two stockpiles, one on either side of the conveyor.
Stackers are used to stack in different patterns, such as cone stacking and chevron stacking. Stacking in a single cone tends to cause size segregation, with coarser material moving out towards the base. In raw cone ply stacking, additional cones are added next to the first cone. In chevron stacking, the stacker travels along the length of the stockpile adding layer upon layer of material.
Stackers and reclaimers were originally manually controlled, with no means of remote control. Modern machines are typically semi-automatic or fully automated, with parameters remotely set. The control system used is typically a programmable logic controller, with a human-machine interface for display, connected to a central control system.
Other than stacking, a stacker has three basic movements:
- Luffing: This is vertical movement. Stackers use either a winch mechanism with metal wire, or hydraulic cylinders, generally two. Winch mechanisms are highly reliable compared to hydraulic actuators and remain widely used, particularly in large stackers.
- Travelling: The stacker moves on a rail track, which may be broad or narrow gauge, enabling it to move around the stockyard as required. For this purpose, traction motors powered by direct current (DC) are connected by bevel gears to between 12 and 22 wheels. For manual control, all the controls are in a controller's cabin above the boom conveyor or boom. Modern stackers can be controlled remotely.
- Slewing: This is rotation of the stacker around its central axis to align or place the stockpile where required. This works mostly by a slew pinion that rotates around a slew base. This type of gear assembly is called a sun and planet gear. The axles may be multiple and are driven by DC-powered axle motors which transmit the torque via bevel or helical gears.
The conveyor belts used in stackers may be made of fabric or metal wire, depending upon the material to be handled. They are driven by pulleys, which in turn are driven by DC motors. The motors and gear are coupled by fluid coupling.
Most stackers are electrically powered by way of a trailing cable. There are basically two types of cable trailing: power cord rotating drum (PCRD) and control cable rotating drum (CCRD). Pendulum adjustments are made to ensure the proper alignment of these cables while the stacker is travelling.
Stacker is a game merchandiser manufactured by LAI Games. The goal of the game is to align rows of moving blocks on top of each other. A player who can stack 11 rows will win a minor prize, which is usually low in value, sometimes lower in value than the amount of money the player paid to play the game. A player who gets to the top row wins a major prize. The major prize varies from machine but will often include game consoles, cellular phones, and MP3 players. There are three different colorways for the machines. Blue and Black, Red and Black, and Red, Yellow, and Blue.
A stacker is a machine used in bulk material handling.
Stacker may refer to:
- Stacker (disk compression), disk compression software, released by Stac Electronics
- Stacker (compression method), a data compression method for point-to-point protocol
- Stacker 2, a Synephrine-based drug for weight loss
- Autoloader (data storage device), alternative name for a device used to automate changing tape cartridges in a magnetic tape drive
- BK Stacker, a type of hamburger sold by Burger King
- Reach stacker, a vehicle for handling intermodal cargo containers
- Stacker (game)
Usage examples of "stacker".
Thank Stacker for his kindness, and tell him I will send a design or two his way.
The dog did so and lowered her head as Stacker reattached the chain to her collar.
Masters spent too long in the station bookshop quizzing one of the shelf stackers on her reading habits, and nearly forgot to keep an eye on the time.
The idea is to go in and clear out the stackers without taking out your own people or the civil-ians.
Guards stamped their feet, engineers stood in animated discussion by the winch engine and a caravan shack disgorged another shift of stackers fresh from a break.
He turned off the engine and immediately heard another one, not far away, a heavier machine than his own, probably one of the stackers and lifters.
As the bodies were being stacked one of the policemen slid on the coveralls as the two porters handed off their burdens to the four stackers in the van.
The only visible horizon seemed to be made from warehouses and loading bays, where a spidery gridwork of gantry cranes and container stackers wove through every section of the big open structures.
As the bodies were being stacked one of the policemen slid on the coveralls as the two porters handed off their burdens to the four stackers in the van.
Like, if we're trying to sell athletic shoes, we don't pay attention to the tube feeders, porch monkeys, Winnebago jockeys, or can stackers.