A
PRESENTATION
ON
AUTOMATIC MECHANICAL SLIDING GATE
ANAND ENGINEERING COLLEGE, KEETHAM AGRA.
AFFILIATED TO :
GAUTAM BUDDHA TECHNICAL UNIVERSITY,
LUCKNOW
(Session 2012-2013 )
Under the guidance of :
Mr. Rajendra Yadav
Department of Mechanical Engineering
SUMMETTED BY
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Aman Gupta
(0900140009)
Ankur Patel
(1000140903)
Abhishek Agrawal (0900140003)
Aditya Kumar Saha (0900140006)
Neeraj Kumar Singh (0900140057)
Anuj Kumar Yadav (0900140016)
TABLE OF CONTENT
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INTRODUCTION
LITERATURE REVIEW
ABSTRACT
PRINCIPLE & WORKING
LINE DIAGRAM
FLOW CHART
COMPONENT
ASSEMBLY
GEAR
ADVANTAGE
CONCLUSION
REFERENCE
INTRODUCTION
 Gates are commonly used now a days at residential area. A gate is a
point of entry to a space enclosed by walls, or an opening in a fence.
 Gates may prevent or control entry or exit.
 Today many gate doors are opened by an automated gate operator.
Those gates come with many special features.
 The need for automatic gates has been on the increase in recent
times.
 The automatic gate described here automates the entrances to
parking lots of residential homes, organizations, and public car
parks.
INTRODUCTION
 The gates have to perform gyrations by open, auto reverse, stop, fully close
and fully stop.
 Those gates come with different type of mechanism such as sliding, swing,
folding, and barrier gate.
 Those mechanisms have their own working principle and feature but,
automatic sliding gate seem limited at the local market.
SLIDING GATE
 Slide gate operators are commonly
installed at the end of the gate in the
closed position but can also be installed
by the end of the gate in the open
position.
 Sliding gates are often large, heavy and
therefore more hazardous so they can
however be equipped with appropriate
safety devices making them some of
the safest gate systems available.
LITERATURE REVIEW
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Initially
some
concepts
were
developed and the gate, basically the
automatic
gates
which
were
developed were of using huger
amount of power. The gear motors
were used and they were of high
power consuming.
Some of them using a power of high
source and it seemed impossible to
operate them without the availability
of power. And as we know that the
power is not a continuous source and
it can be unavailable at any time so it
was difficult to run off the automatic
gates without the power.
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Some of the newer models of the
gates make use of the sensors and
these sensors are even not in
profitable and acceptable range of
the pockets of each and every user
The function of these sensors is to
sense the presence of any object and
transmit the signal to the receiver
present in the sliding gates and due
to which the gate is opened and
closed accordingly. The sensors
performing such type of works are
proximity sensors.
LITERATURE REVIEW
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There are many companies which are
manufacturing
such types of
automatic sliding gates that are
completely dependent on the
continuous power supply. Some of
them are Primetech Automation,
Technocrats Security System Private
Limited, Godrej Security Equipments.
But the only drawback of these
companies production is that the
automatic
sliding
gates
they
manufacture are making use of
electricity and can’t be run without
the availability of power. Besides this
these gates are also not affordable by
every user.
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Hence after heading towards these
information there arise a need of
constructing such a gate which does
not make use of any electric power
and which is fully automatic.
So considering all the above
drawbacks, we decided to generate a
new concept of manufacturing the
automatic sliding gates that does not
make any use of electric power and
are utterly automatic, known as
Automatic Mechanical Sliding Gate
ABSTRACT
 A Ramp operated mechanical sliding gate system, embodiments which
utilize collapsible Ramps to supply energy to open a gate so that the gate is
opened automatically when the collapsible ramp is depressed by an
approaching vehicle and is close automatically when the vehicle drive
through the gate and the ramp is no longer depressed.
PRINCIPLE & WORKING
 The Main principle of this automatic sliding gate is to increase the rpm
with the help of reversal gear arrangement for opening the gate.
 In automatic sliding gate it will open when vehicle comes on the ramp or
platform then the vehicle load will push of ramp. Ramp is connected with
crankshaft then it will applied the load on crank and it will change linear
motion to circular motion and shaft gives motion to the reverse gear. Hinge
spring also connect with reverse gear so that reverse gear is increasing the
rpm of motion & also it will gives the motion to the output shaft and this
output shaft connected by pulley through wire which gives motion to the
sliding gate it will easily open and close automatically.
SLIDING GATE MODEL
FLOW CHART
COMPONENT
1.Ramp
Ramp is used for sustaining the load of vehicle which is in the form of potential
energy.
2. Crank
It is used to convert circular motion into reciprocating motion, or reciprocating
motion into circular.
3. Shaft
Shaft is used for power transmit from one place to another. It is made of cast iron &
attached through crank.
4. Spring
A spring is an elastic object used to store mechanical energy. Springs are usually
made out of spring steel.
COMPONENT
5. Gear
A Gear is a rotating machine part having cut teeth, or cogs, which mesh with
another toothed part in order to transmit torque.
6. Pulley
Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit
power.
7. Sliding gate
Slide gate operators are commonly installed at the end of the gate in the closed
position but can also be installed by the end of the gate in the open position.
ASSEMBLY
 Ramp is connected with crank and this crank is also attached with hinge
spring.
 Crank is attached with primary shaft and it is connected with reversal gear
arrangement.
 In this arrangement first gear greater than other & it is connected with
spring.
 The initial gear is connected with reverse gear so that increase the rpm of
gear.
 Reverse gear is connected with secondary shaft & secondary gear is
connected with catching and releasing pulley.
 This pulley is connected with sliding gate with the help of wire.
GEAR
 Gears are toothed members which transmit power / motion between two
shafts by meshing without any slip.
LAW OF GEARING
 The fundamental law of gearing states that the angular velocity ratio
between the gears of a gear set must remain constant throughout the mesh.
GEAR RATIO
REVERSE GEAR
Reverse is also a pair of gears: one gear
on the countershaft and one on the
output shaft.
However, whereas all the forward gears
are always meshed together, there is a
gap between the reverse gears
Moreover, they are both attached to
their shafts: neither one rotates freely
about the shaft.
REVERSE GEAR
 The idler has teeth which mesh with both gears, and thus it couples these
gears together and reverses the direction of rotation without changing the
gear ratio slid between them.
 When reverse is selected a small gear, called an idler gear or reverse idler,
is slid between them.
REVERSE GEAR
 When helical gears rotate, there is constant contact between gears, which
results in quiet operation.
 Reverse gears are spur gears, meaning that they have straight teeth, in
order to allow for the sliding engagement of the idler, which is difficult
with helical gears.
SPUR GEAR
 Spur gears are the most common type of gears. They have
straight teeth, and are mounted on parallel shafts.
Sometimes, many spur gears are used at once to create very
large gear reductions.
 Spur gears are used in many devices like the electric
screwdriver, dancing monster, oscillating sprinkler, windup
alarm clock, washing machine and clothes dryer. But you
won't find many in your car.
GEAR MATERIALS
Metallic
Gears
• Cast Iron Gears
• Steel Gears
• Aluminum Gears
• Bronze Gears
• Brass Gears
• Ductile Iron Gears
Nonmetallic
Gears
• Plastic Gears
SELECTION OF GEAR MATERIALS
Allowable bending and
hertz stress
Wear resistance
Impact strength
Water and corrosion
resistance
Manufacturing cost
Size
Reliability
Weight
Lubrication requirements
No Moisture
Absorption
Dimensionally Stable
Stress-Free structure
Environmental and
surface temperature
SPUR GEAR
CRANK
A crank is an arm attached at right angles to a rotating shaft by
which reciprocating motion is imparted to or received from the
shaft.
It is used to convert circular motion into reciprocating motion,
or sometimes reciprocating motion into circular
PULLEY
A pulley is a wheel on an axle that is designed to support
movement of a cable or belt along its circumference.
ADVANTAGE
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It works without electricity.
No use of sensors.
It is more economical.
It require less attention.
It also works at scarcity place where electricity is not present.
More durability.
CONCLUSION
 This project is to study about automatic sliding gate mechanism and to
understand the working principle in term of movement. Sliding gate type
mechanism which is operated without use of electricity and sensor. It is
operated with the help of ramp or utilizing as a power source the ramp
structure and fully mechanically operates. Sliding gate finds the best utility
in an unleveled area. Giving great service at an angle that steel sliding gate
can work ideally will help we save large amount of money. The other
feature of a sliding gate is that it opens twice as quick compared to the
other types of gates.so this mechanism easy to utilized & realizable.
REFERENCE
• 1. R.S KHURMI., J.K GUPTA., “Theory of Machines”, Eurasia
Publishing House, S.CHAND, 2009
• 2. R.S KHURMI., J.K.GUPTA., “Machine Design”, Eurasia Publishing
House, S.CHAND, 2007
• WEBSITE
• http://en.wikipedia.org/wiki/GEAR
• http://www.google.com/patents/US4521992
• umpir.ump.edu.my/1138/2/Chai Fook Siang
• www.amazinggates.com/Sliding_Gates_s/43.htm
• http://www.howstuffworks.com/
THANK YOU