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Encyclopedia > Belt (mechanical)
v-belt
v-belt
flat belt
flat belt

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. Image File history File links Download high-resolution version (738x693, 101 KB) Keilriemen, V-Belt. ... Image File history File links Download high-resolution version (738x693, 101 KB) Keilriemen, V-Belt. ... Image File history File links Download high-resolution version (849x760, 113 KB) Flachriemenscheibe mit Riemen Own work, 2nd Aug. ... Image File history File links Download high-resolution version (849x760, 113 KB) Flachriemenscheibe mit Riemen Own work, 2nd Aug. ... “Gearbox” redirects here. ...


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. For the band, see Pulley (band). ...


As a source of motion, a conveyor belt is one application where the belt is adapted to continually carry a load between two points. This article is about industrial conveyor belts. ...

Contents

Headline text

== Power Transmission == 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.


The earliest was the flat belt, used with line shafting. 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. 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. Belts are used to mechanically link two or more rotating items. ... Line shafts and belt driven machinery Line shafting was the power transmission system at the heart of the Industrial Revolution. ... A Watt steam engine, the steam engine that propelled the Industrial Revolution in Britain and the world. ... A Möbius strip made with a piece of paper and tape. ...


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). The early sewing machines utilized a leather belt, joined either by a metal staple or glued, to great effect. Belts are used to mechanically link two or more rotating items. ... Torque applied via an adjustable end wrench Relationship between force, torque, and momentum vectors in a rotating system In physics, torque (or often called a moment) can informally be thought of as rotational force or angular force which causes a change in rotational motion. ... A polyurethane is any polymer consisting of a chain of organic units joined by urethane links. ... A Singer treadle sewing machine Singer Corporation is a United States of America manufacturer of sewing machines, first established as I.M. Singer & Co. ...


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). Charles Cassius Gates, Jr. ... Torque applied via an adjustable end wrench Relationship between force, torque, and momentum vectors in a rotating system In physics, torque (or often called a moment) can informally be thought of as rotational force or angular force which causes a change in rotational motion. ... SEM picture of a bend in a high surface area polyester fiber with a seven-lobed cross section Polyester is a category of polymers, or, more specifically condensation polymers, which contain the ester functional group in their main chain. ... Aramid fiber (1961) is a fire-resistant and strong synthetic fiber. ... Chemical structure of Kevlar. ...


Timing Belts

Timing belt
Timing belt

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 these belts. Image File history File links Download high resolution version (458x640, 236 KB) Description: Timing belt Source: selbst gemacht Date: created 2. ... Image File history File links Download high resolution version (458x640, 236 KB) Description: Timing belt Source: selbst gemacht Date: created 2. ... Timing belt A timing belt, timing chain or cam belt is a part of an internal combustion engine that controls the timing of the engines valves. ... For the fictional characters of the same name, see Camshaft (Transformers). ... The top electromagnet (1) is charged, attracting the topmost four teeth of a sprocket. ...


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%). This page is a candidate to be moved to Wiktionary. ...


Specialty Belts

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. The continuously variable transmission (CVT) is a transmission in which the ratio of the rotational speeds of two shafts, as the input shaft and output shaft of a vehicle or other machine, can be varied continuously within a given range, providing an infinite number of possible ratios. ...


See also

This article is about industrial conveyor belts. ... Roller chain and sprocket Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery. ... A Gilmer belt is a system for transferring power between axles in a machine. ...

External links

  • Good discussion on power transmission belts - Article

  Results from FactBites:
 
Mechanical Conveyor Belt Fastener (2680 words)
Mechanical belt fasteners are easily installed with only a modest amount of mechanical skills and tools.
To properly select a mechanical belt fastener both the physical and environmental factors must be considered, but not to be forgotten are the experience factors.
Mechanical belt fastener manufacturers provide tables, which are to be used as a guideline based on belt thickness and pulley diameters.
Reinforced chemical mechanical planarization belt - Patent 6666326 (7300 words)
The belt of claim 5, wherein the opening in the grid of the continuous mesh core is defined with reinforcing perimeter members, the perimeter members being affixed to the joints around the perimeter of the opening in the grid.
The belt of claim 5, wherein the polymeric material is made thinner at the opening in the grid of the continuous mesh core, and the polymeric material is treated to allow optical transmission through the thinner polymeric material at the opening in the grid of the continuous mesh core.
The belt of claim 14, wherein the polymeric material is made thinner at the opening in the grid of the continuous mesh core, and the polymeric material is treated to allow optical transmission through the thinner polymeric material at the opening in the grid of the continuous mesh core.
  More results at FactBites »

 
 

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