Unit Handling System Components

Roll Tow Components


Trucks and Carts - Most conventional trucks can be readily adapted to Trukveyor operation through simple selectivity devices. Even the common hand truck, found in most industrial plants, is easily converted for use in Trukveyor systems. Custom made trucks can also be furnished to meet special needs. For towline systems a plain tow pin is either manually or automatically dropped into the chain slot.

Roll-tow chains - Forged steel riveted chain maximizes strength while minimizing weight. It can be easily assembled and disassembled without tools. All parts are heat treated for enhanced strength and maximum wear resistance. Threaded extended pins are used to attach pushers and idlers.

Roll-tow (TA and TR) pushers - TA pushers capture and hold truck tow pins on monoplane installations. A counterweighted pawl is depressed by the tow pin as it enters the pusher. Upon engagement, the pawl returns to its normal position capturing the tow pin. The rear of the pusher is inclined to allow tow pin engagement from behind. The frame and pawl are constructed of rugged, malleable iron castings. TR pushers are used for applications involving switching. Construction and operation of TR pushers is similar to TA pushers, except for side exit ramps which are cast into the body, allowing the pin to be lifted out of the pusher at switch points.


Idlers - SA idlers are used to support chain between pushers. SA idlers have a rugged malleable iron frame and two wheels identical to those on pushers.

Bolt-on Wheels - Wheel Bearings for all pushers and idlers have precision balls rolling on hardened, concentrically ground raceways to assure smooth rolling and long life. Standard wheels are bolt-on type, minimizing time and cost, when replacement becomes necessary.

Drives - Constant or variable speed drives are available for speeds up to a normal maximum of 120 fpm (36mpm), and a wide range of chain pull capacities. Special drive applications are available upon request. Caterpillar drives consist of endless precision steel roller chain with hardened drive dogs. Chain back-up guides ensure proper dog engagement. Caterpillar chain tension is easily adjusted to ensure long life. Overload protection is normally provided electrically at the control panel and/or mechanically by a shear pin sprocket at the drive. Removable cover plates accommodate cross traffic with wheel loads of up to 5,000 lb (2200 kg). Drive motors are normally furnished with a "soft start" provision, so that the system has a smooth ramp up to full speed.

Slide-Tow Components


Chain - Forged steel rivetless chain is identical throughout the system. Strong and lightweight, it can be easily assembled and disassembled without tools. All parts are heat treated for high strength and wear resistance. Wear pads on bottom sidebars extend service life.

Mainline Pushers - Mainline chain pushers are made of forged steel components to form a pusher integral with the chain. This pusher face extends the full chain width to assure positive pin pickup. Projection on the pusher dog helps ensure positive pin pickup. Pushers have wear shoes to distribute the load. Chain design permits locating pushers on multiples of 8" spacing.

Powered Sliding and Transfer Pushers - These pushers are made from forged steel and can be substituted for the normal top link at minimum intervals of 8". Close pusher proximity allows for faster pickups and transfers.

UHMW Turns - Turns have a UHMW wear bar which is designed to have two wearing surfaces, both of which can be used prior to replacing the bar. Once the front active surface has worn, simply remove the bar, rotate it 180 degrees, and reinstall. Additionally, the turns need no routine maintenance.

Controls and Electrical Accessories - Control panels contain a motor starter, fused disconnect switch (interlocked to the door panel), control circuit transformer, primary overload relays with external reset button, and an integral pushbutton operator station. The panels have a space for additional control relays. A warning horn time delay relay is also provided. Pushbutton stations are usually included. For normal operation, start-stop stations are recommended for main conveyor operation and control points with stations strategically located along the conveyor path. Stations are latched so that the conveyor is not restarted until the station which was stopped has been restored to its running position. The conveyor controller can be interlocked with a PLC or computer to keep supervisory computer systems advised of system operation.

 

  
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