Type: Glossary & Dictionary
Category: Conveyor System
A Belt is a looped strip of flexible material, used to mechanically link two
or more rotating shafts. They may be used as a source of motion, to efficiently
transmit power, or to track relative movement.
Belts are looped over pulleys. In a two pulley system, the belt can either drive
the pulleys in the same direction, or the belt may be crossed, so that the
direction of the shafts is opposite.
As a source of motion, a conveyor belt is one application where the belt is
adapted to continually carry a load between two points.
Power transmission is achieved by specially designed belts and pulleys. The
demands on a belt drive transmission system are large and this has led to many
variations on the theme.
Flat belts were used early in line shafting to transmit power in factories. It
is a simple system of power transmission that was well suited to its time in
history. The Industrial Revolution soon demanded more from the system, as flat
belt pulleys need to be carefully aligned to prevent the belt from slipping off.
Because flat belts tend to slip towards the higher side of the pulley, pulleys
were made with a slightly convex face (rather than flat) to keep the belts
centered. The flat belt also tends to slip on the pulley face when heavy loads
are applied. In practice, such belts were often given a half-twist before
joining the ends (forming a Möbius strip), so that wear was evenly distributed
on both sides of the belt(DB).
Round belts are a circular cross section belt designed to run in a pulley with a
circular (or near circular) groove. They are for use in low torque situations
and may be purchased in various lengths or cut to length and joined, either by a
staple, gluing or welding (in the case of polyurethane). Early sewing machines
utilized a leather belt, joined either by a metal staple or glued, to great
Vee belts (also known as v-belt or wedge rope) are an early solution that solved
the slippage and alignment problem. The V-belt was developed in 1917 by John
Gates of the Gates Rubber Company. The "V" shape of the belt tracks in a mating
groove in the pulley (or sheave), with the result that the belt cannot slip off.
The belt also tends to wedge into the groove as the load increases — the greater
the load, the greater the wedging action — improving torque transmission and
making the vee belt an effective solution. They can be supplied at various fixed
lengths or as a segmented section, where the segments are linked (spliced) to
form a belt of the required length. For high-power requirements, two or more vee
belts can be joined side-by-side in an arrangement called a multi-V, running on
matching multi-groove sheaves. The strength of these belts is obtained by
reinforcements with fibers like steel, polyester or aramid (e.g. Twaron).
Timing belts, (also known as Toothed, Notch or Cog) belts are a positive
transfer belt and can track relative movement. These belts have teeth that fit
into a matching toothed pulley. When correctly tensioned, they have no slippage
and are often used to transfer direct motion for indexing or timing purposes
(hence their name). Camshafts of automobiles and stepper motors often utilize
Timing belts with a helical offset tooth design are available. The helical
offset tooth design forms a chevron pattern and causes the teeth to engage
progressively. The chevron pattern design is self-aligning. The chevron pattern
design does not make the noise that some timing belts make at idiosyncratic
speeds, and is more efficient at transferring power (up to 98%).
Belts normally transmit power only on the tension side of the loop. However,
designs for continuously variable transmissions exist that use belts that are a
series of solid metal blocks, linked together as in a chain, transmitting power
on the compression side of the loop.
Ashland Conveyor Products, TRAMCO Conveyors, Overland Conveyor Co., Inc., McNichols Conveyor Co., Hoffmeyer Company, Inc., Amek Limited, Conveyor Services Corporation, Conveyor Technologies Ltd., Jorgensen Conveyors, Inc., Goodman Conveyor Company, May Conveyor Co., Conveyor Components Company, DORNER MFG. CORP, CinchSeal, Continental Conveyor Ltd., Ningbo Wanya Transmission Belts Co., Ltd., Hebei Xinyuan Convey Machinery Co.,Ltd, Wuhu Crane & Conveyor Co., Ltd., China Dalian Golden Conveyor Co., Ltd, Kevin Industry CO.,LTD, Astec Conveyors Limited, NingBo DingNeng Logistic Machinery Manufacture Co Ltd, McKenzie Handling Systems, Caljan Rite-Hite Inc., Montech AG
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BEUMER Developed Innovative Conveyor Technology that Needs Only a Fraction of the Energy, Berkeley Scientists Moved Carbon Nanotubes into Conveyor Belts Capable of Ferrying Atom-Sized Particles to Microscopic Worksites, MIT Researchers Developed Micropumps Fluid Conveyor Belt May Enable Portable Biomedical Lab-on-a-Chip Devices, Transformed carbon nanotubes into conveyor belts, Micropumps create a “fluid conveyor belt”, Dorner Mfg. Corp.: New 5200 Series QWIK Conveyor Eliminates Belt Pinch Points for Greater Worker Safety, Belt conveyor support element and conveyor comprising same, SEALING PLATE CONVEYOR., CONVEYOR SYSTEM FOR LOADING AND UNLOADING TRUCKS, Compost windrow turner with oblic conveyor belt, A new invention for travelers, Unit for manufacturing and packaging roll-shaped items, Illustrative Research On 'Belt Conveying Of Minerals' Highlights The Important Area..., FKI Logistex Launches Logistex MR200 Motorized Roller Conveyor, NEW LOW PRESSURE ACCUMULATION AND UNIVERSAL MICROROLLER CONTROL MODULES REDUCE ENERGY AND OTHER COSTS ON CONVEYOR SYSTEMS, FKI Logistex introduces Case Conveyor Solutions, Activated roller belt aligns packages, FKI Logistex Launches Logistex NB200 Narrow-Belt Driven Roller Conveyor, Rotary Table Style Automated Production Line Parts Washers, Caljan Rite-Hite Launches CurveTrack Line Belt Conveyor to move loads through curves to next conveyor., Electrical Crossbelt Sorter operates at speeds to 2.5 m/s, Elcom Flat-Belt Conveyor 90 are modular, Tilt-Tray/Cross-Belt Sorters utilize LSM technology, SOUTHERN MANUFACTURING 2009 - Stand No. K30, Schneider introduces auto pallet dispenser
Robson Dry Sand Handling System at WBB Minerals, Manta Offers High Resolution Scanning to Detect and Remove the Smallest Defects and Foreign Material, Modifications to the Existing Screen and Magnet in the Immensity Outloading Region for Personnel Access at British Sugar, Bulk handling expertise boosts Egyptian cement production, Gramac Quick-Release Belt curve first trailed back at Brussels National Airport