Belt (Mechanical) - Revision history

Manidh at 08:34, 9 January 2023

2023-01-09T08:34:49Z

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 == References ==
 [[Category:Mechanical engineering]]
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+[[Category:Navigational boxes| ]]
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+[[Category:Navigational boxes without horizontal lists]]
 [[Category:Organic Articles English]]
-[[Category:Vigyan Ready]]
+[[Category:Pages with broken file links]]

Indicwiki: 16 revisions imported from :alpha:Belt_(Mechanical)

2023-01-09T08:26:22Z

16 revisions imported from alpha:Belt_(Mechanical)

← Older revision	Revision as of 13:56, 9 January 2023
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alpha>Ramamurthy S: Category added

2023-01-09T05:43:57Z

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alpha>Ramamurthy S: Category added

2023-01-02T14:04:17Z

Category added

← Older revision		Revision as of 19:34, 2 January 2023
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	[[Category:Mechanical engineering]]		[[Category:Mechanical engineering]]
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			<references />
			[[Category:Organic Articles English]]

alpha>Ramamurthy S: Citation added

2023-01-01T15:28:26Z

Citation added

← Older revision		Revision as of 20:58, 1 January 2023
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	[[File:Belt types.jpg\|alt=Belt Types\|thumb\|Fig 1. Belt Types]]		[[File:Belt types.jpg\|alt=Belt Types\|thumb\|Fig 1. Belt Types]]

	* Flat Belt - This belt has a rectangular cross section as shown in fig 1. (a) . These belts are capable of transmitting power over long distances between pulley centres. The efficiency of this drive is around 98% and produce little noise.		* Flat Belt - This belt has a rectangular cross section as shown in fig 1. (a) . These belts are capable of transmitting power over long distances between pulley centres.<ref>{{Cite web\|title=Belt Drives\|url=https://www.theengineerspost.com/types-of-belt-drives/#:~:text=Flat%20belt%3A%20This%20belt%20has,long%20distances%20between%20pulley%20centres.}}</ref> The efficiency of this drive is around 98% and produce little noise.

	* V Belt - This belt is used with grooved pulleys, V-belts are trapezoidal in cross-section as shown in fig 1. (b). This belt permit large speed ratio and can transmit higher power.		* V Belt - This belt is used with grooved pulleys, V-belts are trapezoidal in cross-section as shown in fig 1. (b). This belt permit large speed ratio and can transmit higher power.
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	=== Velocity Ratio : ===		=== Velocity Ratio : ===
	Velocity ratio is the ratio of the [[velocity]] of the driven to the velocity of the driver.		Velocity ratio is the ratio of the [[velocity]] of the driven to the velocity of the driver.<ref>{{Cite web\|title=Velocity Ratio\|url=https://www.engineersgallery.com/velocity-ratio-and-slip-of-a-belt-drive/}}</ref>

	Let N<sub>1</sub>= Speed of the driver in r.p.m ; d<sub>1</sub>= Diameter of the driver		Let N<sub>1</sub>= Speed of the driver in r.p.m ; d<sub>1</sub>= Diameter of the driver
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	== Creep of the belt ==		== Creep of the belt ==
	In a belt drive the belt is passing over the driver and driven(follower) pulley. Belt is subjected to tension during the power transmission. The portion of the belt which leaves the follower and approaches the driver is known as the tight side of the belt and is subjected to tension T<sub>1</sub>. The portion of the belt which leaves the driver and approaches the follower is known as the slack side of the belt and is subjected to tension T<sub>2</sub>. T<sub>1</sub> > T<sub>2 .</sub> Stretch in the belt due to different tensions on the two sides of the pulley will be different. A certain portion of the belt when passes from slack side to tight side, extends and the same portion contracts again when it passes from tight side to slack side. Due to these changes in length , there will be a relative motion between the belt and the pulley surfaces which is known as Creep. The creep reduces slightly the speed of the follower (driven pulley).		In a belt drive the belt is passing over the driver and driven(follower) pulley. Belt is subjected to tension during the power transmission. The portion of the belt which leaves the follower and approaches the driver is known as the tight side of the belt and is subjected to tension T<sub>1</sub>. The portion of the belt which leaves the driver and approaches the follower is known as the slack side of the belt and is subjected to tension T<sub>2</sub>. T<sub>1</sub> > T<sub>2 .</sub> Stretch in the belt due to different tensions on the two sides of the pulley will be different. A certain portion of the belt when passes from slack side to tight side, extends and the same portion contracts again when it passes from tight side to slack side. Due to these changes in length , there will be a relative motion between the belt and the pulley surfaces which is known as Creep.<ref>{{Cite web\|title=Creep\|url=https://old.amu.ac.in/emp/studym/99996967.pdf}}</ref> The creep reduces slightly the speed of the follower (driven pulley).

	== Cross Belt drive ==		== Cross Belt drive ==
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	* [http://mechanicsmap.psu.edu/websites/7_friction/7-7_belt_friction/beltfriction.html Belt Friction]		* [http://mechanicsmap.psu.edu/websites/7_friction/7-7_belt_friction/beltfriction.html Belt Friction]
			*[https://www.heiyi-belt.com/Belt-Drives-Types-Slip-Creep-V-belts-Advantages-Disadvantages-HEIYI-id3678333.html Slip and Creep]
	*		*

alpha>Ramamurthy S: /* Creep of the belt */

2022-12-14T09:03:38Z

Creep of the belt

← Older revision		Revision as of 14:33, 14 December 2022
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	== Creep of the belt ==		== Creep of the belt ==
	In a belt drive the belt is passing over the driver and driven(follower) pulley. Belt is subjected to tension during the power transmission. The portion of the belt which leaves the follower and approaches the driver is known as the tight side of the belt and is subjected to tension T<sub>1</sub>. The portion of the belt which leaves the driver and approaches the follower is known as the slack side of the belt and is subjected to tension T<sub>2</sub>. T<sub>1</sub> > T<sub>2</sub>		In a belt drive the belt is passing over the driver and driven(follower) pulley. Belt is subjected to tension during the power transmission. The portion of the belt which leaves the follower and approaches the driver is known as the tight side of the belt and is subjected to tension T<sub>1</sub>. The portion of the belt which leaves the driver and approaches the follower is known as the slack side of the belt and is subjected to tension T<sub>2</sub>. T<sub>1</sub> > T<sub>2 .</sub> Stretch in the belt due to different tensions on the two sides of the pulley will be different. A certain portion of the belt when passes from slack side to tight side, extends and the same portion contracts again when it passes from tight side to slack side. Due to these changes in length , there will be a relative motion between the belt and the pulley surfaces which is known as Creep. The creep reduces slightly the speed of the follower (driven pulley).

	== Cross Belt drive ==		== Cross Belt drive ==

alpha>Ramamurthy S: Creep section added

2022-12-14T08:38:11Z

Creep section added

← Older revision		Revision as of 14:08, 14 December 2022
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	== Slip of the belt ==		== Slip of the belt ==
	When the driver pulley rotates , due to the firm grip between the pulley surface and the belt, the driver pulley carries the belt. The firm grip between the pulley and the belt is obtained by [[friction]] which is known as frictional grip. But sometimes the frictional grip is not sufficient which may cause some forward [[motion]] of the driver pulley without carrying the belt with it. This means that there is a relative motion between the driver pulley and the belt. The difference between the linear speeds of the pulley rim and the belt is a measure of slip. Generally slip is expressed as a percentage		When the driver pulley rotates , due to the firm grip between the pulley surface and the belt, the driver pulley carries the belt. The firm grip between the pulley and the belt is obtained by [[friction]] which is known as frictional grip. But sometimes the frictional grip is not sufficient which may cause some forward [[motion]] of the driver pulley without carrying the belt with it. This means that there is a relative motion between the driver pulley and the belt. The difference between the linear speeds of the pulley rim and the belt is a measure of slip. Generally slip is expressed as a percentage

			== Creep of the belt ==
			In a belt drive the belt is passing over the driver and driven(follower) pulley. Belt is subjected to tension during the power transmission. The portion of the belt which leaves the follower and approaches the driver is known as the tight side of the belt and is subjected to tension T<sub>1</sub>. The portion of the belt which leaves the driver and approaches the follower is known as the slack side of the belt and is subjected to tension T<sub>2</sub>. T<sub>1</sub> > T<sub>2</sub>

	== Cross Belt drive ==		== Cross Belt drive ==

alpha>Ramamurthy S: Internal inks added

2022-12-12T14:35:45Z

Internal inks added

← Older revision		Revision as of 20:05, 12 December 2022
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	== Introduction ==		== Introduction ==
	Belts are used for transmitting power between two shafts<ref>{{Cite book\|last=Dr. R. K., Bansal\|title=Theory of Machines\|pages=284}}</ref>. Belts will be of two kinds, flat and vee belts. Belts are running over the pulleys which are mounted on two shafts. Belts are used when the distance between the shafts is large. Gears are used when the distance between the shafts is small.		Belts are used for transmitting [[power]] between two shafts<ref>{{Cite book\|last=Dr. R. K., Bansal\|title=Theory of Machines\|pages=284}}</ref>. Belts will be of two kinds, flat and vee belts. Belts are running over the pulleys which are mounted on two shafts. Belts are used when the distance between the shafts is large. Gears are used when the distance between the [[shafts]] is small.

	== Types of Belts ==		== Types of Belts ==
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	=== Velocity Ratio : ===		=== Velocity Ratio : ===
	Velocity ratio is the ratio of the velocity of the driven to the velocity of the driver.		Velocity ratio is the ratio of the [[velocity]] of the driven to the velocity of the driver.

	Let N<sub>1</sub>= Speed of the driver in r.p.m ; d<sub>1</sub>= Diameter of the driver		Let N<sub>1</sub>= Speed of the driver in r.p.m ; d<sub>1</sub>= Diameter of the driver
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	== Slip of the belt ==		== Slip of the belt ==
	When the driver pulley rotates , due to the firm grip between the pulley surface and the belt, the driver pulley carries the belt. The firm grip between the pulley and the belt is obtained by friction which is known as frictional grip. But sometimes the frictional grip is not sufficient which may cause some forward motion of the driver pulley without carrying the belt with it. This means that there is a relative motion between the driver pulley and the belt. The difference between the linear speeds of the pulley rim and the belt is a measure of slip. Generally slip is expressed as a percentage		When the driver pulley rotates , due to the firm grip between the pulley surface and the belt, the driver pulley carries the belt. The firm grip between the pulley and the belt is obtained by [[friction]] which is known as frictional grip. But sometimes the frictional grip is not sufficient which may cause some forward [[motion]] of the driver pulley without carrying the belt with it. This means that there is a relative motion between the driver pulley and the belt. The difference between the linear speeds of the pulley rim and the belt is a measure of slip. Generally slip is expressed as a percentage

	== Cross Belt drive ==		== Cross Belt drive ==
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	== External Links ==		== External Links ==

			* [http://mechanicsmap.psu.edu/websites/7_friction/7-7_belt_friction/beltfriction.html Belt Friction]
			*

	== References ==		== References ==
	[[Category:Mechanical engineering]]		[[Category:Mechanical engineering]]
	[[Category:Mechanical engineering]]		[[Category:Mechanical engineering]]

alpha>Ramamurthy S: Citation added

2022-12-12T14:09:14Z

Citation added

← Older revision		Revision as of 19:39, 12 December 2022
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	== Introduction ==		== Introduction ==
	Belts are used for transmitting power between two shafts. Belts will be of two kinds, flat and vee belts. Belts are running over the pulleys which are mounted on two shafts. Belts are used when the distance between the shafts is large. Gears are used when the distance between the shafts is small.		Belts are used for transmitting power between two shafts<ref>{{Cite book\|last=Dr. R. K., Bansal\|title=Theory of Machines\|pages=284}}</ref>. Belts will be of two kinds, flat and vee belts. Belts are running over the pulleys which are mounted on two shafts. Belts are used when the distance between the shafts is large. Gears are used when the distance between the shafts is small.

	== Types of Belts ==		== Types of Belts ==
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	Velocity ration is <math>\frac{N_2}{N_1} = \frac{d_1}{d_2}</math> --------- equation (1)		Velocity ration is <math>\frac{N_2}{N_1} = \frac{d_1}{d_2}</math> --------- equation (1)

			== Slip of the belt ==
			When the driver pulley rotates , due to the firm grip between the pulley surface and the belt, the driver pulley carries the belt. The firm grip between the pulley and the belt is obtained by friction which is known as frictional grip. But sometimes the frictional grip is not sufficient which may cause some forward motion of the driver pulley without carrying the belt with it. This means that there is a relative motion between the driver pulley and the belt. The difference between the linear speeds of the pulley rim and the belt is a measure of slip. Generally slip is expressed as a percentage

	== Cross Belt drive ==		== Cross Belt drive ==
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	== See Also ==		== See Also ==
	[[पट्टा(बेल्ट)]]		[[पट्टा(बेल्ट)]]

			== External Links ==

			== References ==
	[[Category:Mechanical engineering]]		[[Category:Mechanical engineering]]
	[[Category:Mechanical engineering]]		[[Category:Mechanical engineering]]

alpha>Ramamurthy S: Content added

2022-12-12T06:59:49Z

Content added

@@ Line 29: / Line 29: @@
 Velocity ratio is the ratio of the velocity of the driven to the velocity of the driver.
-Let N<sub>1</sub>= Speed of the driver ;   d<sub>1</sub>= Diameter of the driver
+Let N<sub>1</sub>= Speed of the driver in r.p.m ;   d<sub>1</sub>= Diameter of the driver
-N<sub>2</sub>= Speed of the driven ;  d<sub>2</sub>= Speed of the driven
+N<sub>2</sub>= Speed of the driven in r.p.m ;  d<sub>2</sub>= Speed of the driven
 Length of the belt passing over the driver in one minute = circumference of the driver  X number of revolutions per minute
@@ Line 45: / Line 45: @@
 π d<sub>1</sub> X N<sub>1</sub> = π d2 X N2
-Velocity ration is  <math>\frac{N_2}{N_1} = \frac{d_1}{d_2}</math>
+Velocity ration is  <math>\frac{N_2}{N_1} = \frac{d_1}{d_2}</math> --------- equation (1)
 == Cross Belt drive ==
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 In an open belt drive both the pulleys rotate in the same direction, where as in cross belt drive the pulleys rotate in the opposite direction.
-The driver pulley A pulls the belt from CD side and delivers it to FE side. Thus the tension in the belt CD will be more than that in the belt FE. CD side is known as tight side and FE side is known as slack side.
+The driver pulley A in fig 3. pulls the belt from CD side and delivers it to FE side. Thus the tension in the belt CD will be more than that in the belt FE. CD side is known as tight side and FE side is known as slack side.
 == See Also ==