Glossary


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1) Safety rail

Guard rail with posts and rails erected to prevent individuals from coming in contact with hazards.

2) Scissors lift

A raising/lowering device that is supported or stabilized by one or more pantograph leg section.

3) Second surface reflection

A problem for polarized retro-reflective sensors that is created by shiny objects wrapped in shiny material.  The wrapping material can depolarize the light as it passes through.

4) Selective rack

Steel storage racks arranged in either single or back-to-back (double) rows.  Each of the rows offers a bay or number of bays in the down aisle direction.  Pallets are generally positioned side-by-side in the down-aisle direction at each level of the bay.  The advantage to this configuration of rack is that all pallets are accessible from the facing aisle.

5) Self-Guided Vehicle

A Self-Guided Vehicle (SGV) is an autonomous, self-directed robotic delivery system for the movement of product in diverse environments. An SGV operates independently to navigate around fixed and moving obstructions without the need for an external guide path network or sensors, such as buried wires or mounted magnetic or optical strips. Instead, an SGV uses on-board sensory inputs and navigational software to dynamically plot a path as the robot moves to each goal or task destination. See also AGV or Automatic Guided Vehicle  or AGVS .

6) Semigantry crane

A gantry crane designed to have one "leg" of the crane supporting an end of the bridge and the other end of the bridge is supported by an end truck running on an elevated rail or runway.  Often referred to as a semigantry crane.

7) Sensor

An electronic device designed to detect a specific phenomenon, such as the presence or absence of a physical object, and used to affect control over a designated process.

8) SGV

A Self-Guided Vehicle (SGV) is an autonomous, self-directed robotic delivery system for the movement of product in diverse environments. An SGV operates independently to navigate around fixed and moving obstructions without the need for an external guide path network or sensors, such as buried wires or mounted magnetic or optical strips. Instead, an SGV uses on-board sensory inputs and navigational software to dynamically plot a path as the robot moves to each goal or task destination.

9) Sheet lifter

Usually a below-the-hook (hoist or balancer) material handling device that utilizes two "claws" that grab a piece or pieces of sheet metal or wood.  These claws are "squeezed" by means of a ratchet and turning wheel and wrap around the sides of the sheet.  A lip on the lower portion of the claws prevents the sheet from falling out of the lifter.  The sheet lifter is attached to the lifting device by means of a bail at the top of the device.

10) Shelf

A storage surface located above the floor level and usually contained in shelving system or rack system. The formed steel sheet which attaches horizontally to the posts and supports the load.  Shelves are available in many sizes and a number of capacities. Shelves should be specified based on the customer's requirements and uniform load capacity that the shelf must support.  Steel gauge, shelf formation and reinforcing varies from manufacturer to manufacturer and thus determines shelf capacity.

11) Shelf depth

The horizontal distance measured between the outside faces of beams.

12) Shelf divider

A formed steel partition placed within the shelf opening to subdivide it into smaller compartments.  Some types of dividers include: full height, angle, tapered, sliding, floating.

13) Shelf opening

The basic shelving compartment formed between two shelves within a unit of shelving.

14) Shelf reinforcement

A variety of flat bars, angles, channels or other formed sections which are placed within or under the shelf to reinforce the shelf and prevent damage due to shock loading.

15) Shelving

A storage system designed to accept and store non-palletized loads, placed thereon, either manually, semi-automatically or automatically such as by an automated retrieval mechanism. In its basic open form, shelving is comprised of upright posts, the desired number of formed steel sheet panels which constitute horizontal shelves, and end and back braces. Sheet steel back and side panels may be substituted for bracing to form enclosed shelving units.