This disclosure relates generally to a gear system, and more
particularly to a gear system for increasing revolutions per minute (RPM) of an
output with respect to an input shaft.
BACKGROUND
[002] Gears are long known to be used for the transmission of motion.
A gear train or a gear system is a combination of gears which is used to transmit
motion from one shaft to another. Gear train is mainly used to connect shafts
separated by large distance and to get desired direction of rotation, and/or to
obtain speed gaining or reduction. A gear train having a relative motion of axes
is called a planetary or an epicyclic gear train system. In an epicyclic gear train
the gears revolve about axes that are not fixed rather rotating.
[003] The planetary or epicyclic gear train system may be used to
obtain high speed reductions in compact space. Further, in the planetary gear
train, load is shared among multiple planetary gears, so there is an assurance of
uniform load distribution among the planets. Therefore, it can be used for higher
power transmission. Due to the use of planet gears in planetary gear system,
torque capability is also greatly increased. Further, with the use of more planet
gears in the system, the load ability and torque density can be increased greatly.
Also, the planetary gear system creates more contact surfaces and a larger
contact area between the gears, because of which, the load is more evenly
distributed and therefore the gears are more resistant to damage. Planetary gear
system also creates greater stability due to the even distribution of mass.
[004] However., an improved gear system is desired that is capable of
increasing speed by high ratios and effective motion transfer, has simple yet
robust construction, and is easy to maintain and use.
SUMMARY
[005] In one embodiment, a gear system is disclosed. The system
includes a central hub, a ring gear, a sun gear, a plurality of planet gears, and a
plurality of carrier arms. The sun gear and ring gear may be coaxial with the
central hub. The sun gear includes a plurality of gear teeth is defined on an outer
side of the sun gear. The ring gear may include a plurality of gear teeth defined
on an inner side of the ring gear. The sun gear may be rotatable around a central
axis passing through the centre of the sun gear, the central hub, and the ring
gear. The ring gear may remain static. Each of the plurality of carrier arms may
be attached to central hub via a first end of the associated carrier arm and to the
ring gear via a second end of the associated carrier arm. The carrier may be
configured to hold the plurality of planet gears. Each carrier arm of the plurality
of carrier arms may include a plurality of slots, for mounting a plurality of axles.
Each of the planet gear may be mounted on an associated carrier arm via
associated axle. The plurality of planet gears may have centre axes that are
parallel with the central hub, sun gear and ring gear.
[006] Each set of the plurality of planet gears may include three sets
of planet gears. Further, each set of plurality of planet gears may include nine
to twenty-four planet gears. The plurality of sets of planet gears may include 3
sets of planet gears. Each set of the planet gears may include three gears, each
of same radius. The first planet gear among the set of the planet gears having
first radius may be configured to mesh with the sun gear and the second planet
gear. Similarly, the second planet gear among the set of the planet gears having
second radius may be configured to mesh with the first planet gear and the third
planet gear. Likewise, the third planet gear from the set of the planet gears
having a third radius may be configured to mesh with the second gear and the
ring gear. The first radius may be smaller than the second radius, and the second
radius is smaller than the third radius. The set of planet gears with the smallest
radius may be in mesh with the sun gear and the set of planet gears with the
largest radius may in be mesh with the ring gear. The radius of the first planet
gear, second planet gear and third planet gear may be unique relative to each
other.
[007] The sun gear may be configured to act as either driver gear or
driven gear based on the load/torque requirement. When our requirement is to
increase the revolutions per minute at output then the power input may rotate
the planet carrier which in turn rotates all the planet gears and the last set of
planet gear that may be in mesh with the sun gear will rotate the sun gear.
Through this process, the revolutions per minute of sun gear will increase with
respect to the revolutions per minute of the planet gears. And to decrease the
revolutions per minute at the output according to the load requirement the above
process will be reversed with sun gear moving first, acting as a driver and
thereby rotating planet gears with decreased revolutions per minute in order to
maintain gear ratio.
BRIEF DESCRIPTION OF THE DRAWINGS
[008] The accompanying drawings, which are incorporated in and
constitute a part of this disclosure, illustrate exemplary embodiments and,
together with the description, serve to explain the disclosed principles.
[009] FIG. 1 illustrates a perspective view of a gear system, in
accordance with an embodiment of the present disclosure.
[010] FIG. 2 illustrates a front view of the gear system of FIG. 1, in
accordance with an embodiment of the present disclosure.
[011] FIG. 3 illustrates a front view of a carrier of the gear system of
FIG. 1, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION
[012] Exemplary embodiments are described with reference to the
accompanying drawings. Wherever convenient, the same reference numbers are
used throughout the drawings to refer to the same or like parts. While examples
and features of disclosed principles are described herein, modifications,
adaptations, and other implementations are possible without departing from the
spirit and scope of the disclosed embodiments. It is intended that the following
detailed description be considered as exemplary only, with the true scope and
spirit being indicated by the following claims. Additional illustrative
embodiments are listed below.
[013] Referring to FIG. 1, a perspective view of a gear system 100 is
illustrated, in accordance with an embodiment of the present disclosure. An
input shaft may be coupled to the gear system 100. For example, the input shaft
may be coupled to an animal-operated mill for electricity generation. Since the
speed (RPM) of the mill run by animals is inadequately low for running an
electricity generator, there is need for increasing the speed. To this end, the gear
system 100 is provided.
[014] The gear system 100 may include a carrier 102. For example,
the input shaft may be coupled to the carrier 102. The carrier 102 may have a
provision to mount a plurality of the planet gears 114 on it. To this end, the
carrier may include a plurality of carrier arms 110. The planet gears 114 may
be mounted on each of the plurality of carrier arms 110, via a plurality of axles
118 through a plurality of the slots 116 provided on the plurality of the carrier
arms 110.
[015] The carrier 102 may include a central hub 104, a ring gear 106
coaxial with the central hub 104. The carrier 102 may further include a plurality
of carrier arms 110-1, 110-2, and 110-3. Each of the plurality of carrier arms
110 may include a first end 110A and a second end 110B. For example, the
carrier arm 110-1 may include a first end 110-1A and a second end 110-1B.
Similarly, the carrier arm 110-2 may include a first end 110-2A and a second
end 110-2B. Likewise the carrier arm 110-3 may include a first end 110-3A and
a second end 110-2C.
[016] The central hub 104 may include a coupler 104A. The coupler
104A may be used for coupling the input shaft to the carrier 102. For example,
the coupler 104A may be a splined portion including a plurality of splines. This
splined portion may be coupled with a similar splined portion on the input shaft
to which the carrier may be coupled to receive motion.
[017] The ring gear 106 may be coaxial with the central hub 104. The
ring gear 106 may include a plurality of gear teeth 108 defined on an inner side
of the ring gear 106. The ring gear 106 may be coaxial with the central hub 104.
The ring gear 106 may include involute spur teeth. In an example embodiment,
for the ring gear 106, number of teeth may be 439, module may be 6, pitch may
be 18.9 mm, addendum may be 6 mm, dedendum may be 7.5 mm, working
depth may be 12 mm, clearance may be 1.5 mm, whole depth may be 13.5 mm,
and diameter may be 2646 mm. Further, the ring gear 106 may be configured
to act as a fixed gear.
[018] Each of the plurality of carrier arms 110 may be attached to
central hub 104 via the first end 110A of the associated carrier arm 110 and to
the ring gear 106 via the second end 110B of the associated carrier arm 110.
This is further explained in conjunction with FIG. 3.
[019] Referring now to the FIG. 3, a front view of the carrier 102 is
illustrated. The carrier 102 may include the carrier arms 110-1, 110-2, and 110-
3. For example, the carrier arm 110-1 may be attached to central hub 104 via
the first end 110-1A and to the ring gear 106 via the second end 110-1B.
Similarly, the carrier arm 110-2 may be attached to central hub 104 via the first
end 110-2A and to the ring gear 106 via the second end 110-2B. Further, the
carrier arm 110-3 may be attached to central hub 104 via the first end 110-3A
and to the ring gear 106 via the second end 110-3B.
[020] Referring now to FIG. 2, a front view of the gear system 100 is
illustrated in accordance with an embodiment of the present disclosure. with
reference to FIGS. 1-2, the gear system 100 may include a sun gear 112. In an
example embodiment, for the sun gear 112, number of teeth may be 15, module
may be 6, pitch may be 21.35 mm, addendum may be 6 mm, dedendum may be
7.5 mm, working depth may be 12 mm, clearance may be 1.5 mm, whole depth
may be 13.5 mm, and diameter may be 102 mm. The sun gear 112 may be
configured to act as a driven gear as it is coupled to the output shaft. The sun
gear 112 may be rotatable around a central axis AA passing through the centre
of the sun gear 112, the central hub 102, and the ring gear 106.
[021] The gear system 100 may further include a plurality of planet
gears 114 (collectively referred to as plurality of planet gears 114). These
plurality of planet gears 114 may be configured to rotate around the sun gear
112. Each planet gear may be assembled on the associated carrier arm via axles.
These planet gears 114 may be having centre axes that are parallel with the axes
of sun gear 112 and ring gear 106. Planet gears may be free to rotate with respect
to their mounting carrier arms on the carrier, respectively. Each gear here may
be the involute spur gear and is made up of Iron Grade 8 & 9. Each gear has
pitch circle diameter of 19.15 mm; 19.46 mm and 20.09 mm respectively.
[022] The plurality of planet gears 114 may include a plurality of sets
of planet gears, for example, a first set 114-1, a second set 114-2, and a third set
114-3. Each set of the plurality of sets of planet gears may include a first planet
gear (114A) having a first radius, a second planet gear (114B) having a second
radius, and a third planet gear (114C) having a third radius.
[023] For example, the first set of planet gears 110-1 may include a
first planet gear 114-1A, a second planet gear 114-1B, and a third planet gear
114-1C. Similarly, the second set of planet gears 110-2 may include a first
planet gear 114-2A, a second planet gear 114-2B, and a third planet gear 114-
2C. Further, the third set of planet gears 110-3 may include a first planet gear
114-3A, a second planet gear 114-3B, and a third planet gear 114-3C.
[024] Further, the first planet gear 114-1A, the first planet gear 114-
2A, and the first planet gear 114-3A my have a first radius, i.e., radius of the
first planet gear 114-1A, the first planet gear 114-2A, and the first planet gear
114-3A is same and equal to the first radius. In one example embodiment, for
the first planet gear 114-1A, the first planet gear 114-2A, and the first planet
gear 114-3A, number of teeth may be 30, module may be 6, pitch may be 20.09
mm, addendum may be 6 mm, dedendum may be 7.5 mm, working depth may
be 12 mm, clearance may be 1.5 mm, whole depth may be 13.5 mm, diameter
may be 192 mm, and radius may be 96 mm.
[025] The second planet gear 114-1B, the second planet gear 114-2B,
and the second planet gear 114-3B may have a second radius. In other words,
radius of the second planet gear 114-1B, the second planet gear 114-2B, and the
second planet gear 114-3B is same and equal to the second radius. In one
example embodiment, for each of the second planet gear 114-1B, the second
planet gear 114-2B, and the second planet gear 114-3B, number of teeth may
be 60, module may be 6, pitch may be 19.46 mm, addendum may be 6 mm,
dedendum may be 7.5 mm, working depth may be 12 mm, clearance may be
1.5 mm, whole depth may be 13.5 mm, diameter may be 372 mm, and radius
may be 186 mm.
[026] The third planet gear 114-1C, the third planet gear 114-2C, and
the third planet gear 114-3C may have a third radius. In other words, the radius
of the third planet gear 114-1C, the third planet gear 114-2C, and the third planet
gear 114-3C is same and equal to the third radius. In one example embodiment,
for each of the third planet gear 114-1C, the third planet gear 114-2C, and the
third planet gear 114-3C, number of teeth may be 120, module may be 6, pitch
may be 19.15 mm, addendum may be 6 mm, dedendum may be 7.5 mm,
working depth may be 12 mm, clearance may be 1.5 mm, whole depth may be
13.5 mm, diameter may be 732 mm, and radius may be 366 mm.
[027] The first planet gear 114-1 may be configured to mesh with the
sun gear 112 and the second planet gear 114-2. Further, the second planet gear
114-2 may be configured to mesh with the first planet gear 114-1 and the third
planet gear 114-3. Further, the third planet gear 114-3 may be configured to
mesh with the second gear 114-2 and the ring gear 106.
[028] In particular, the first planet gear 114-1A may be configured to
mesh with the sun gear 112 and the second planet gear 114-1B. Further, the
second planet gear 114-1B may be configured to mesh with the first planet gear
114-1A and the third planet gear 114-1C. Further, the third planet gear 114-1C
may be configured to mesh with the second gear 114-1B and the ring gear 106.
[029] Similarly, the first planet gear 114-2A may be configured to
mesh with the sun gear 112 and the second planet gear 114-2B. Further, the
second planet gear 114-2B may be configured to mesh with the first planet gear
114-2A and the third planet gear 114-2C. Further, the third planet gear 114-2C
may be configured to mesh with the second gear 114-2B and the ring gear 106.
[030] Further, the first planet gear 114-3A may be configured to mesh
with the sun gear 112 and the second planet gear 114-3B. Further, the second
planet gear 114-3B may be configured to mesh with the first planet gear 114-
3A and the third planet gear 114-3C. Further, the third planet gear 114-3C may
be configured to mesh with the second gear 114-3B and the ring gear 106.
[031] Each set of planet gears, i.e, the first planet gear 114A, the
second planet gear 114B, and the third planet gear 114C may be mounted on an
associated carrier arm of the plurality of carrier arms 110. For example, the first
planet gear 114-1A, the second planet gear 114-1B, and the third planet gear
114-1C may be mounted on the first carrier arm 110-1. The first planet gear
114-2A, the second planet gear 114-2B, and the third planet gear 114-2C may
be mounted on the second carrier arm 110-2. The first planet gear 114-3A, the
second planet gear 114-3B, and the third planet gear 114-3C may be mounted
on the third carrier arm 110-3.
[032] It may be noted that each set of plurality of planet gears may
include three to six planet gears 114. Accordingly, each carrier arm 110 may
include multiple three to six slots 116 for accommodating the planet gears. For
example, as shown in FIG. 3, each carrier arm 110 may include multiple six
slots 116 for accommodating the planet gears.
[033] Referring back to FIGS. 1-2, the plurality of sets of planet gears
114 may include three sets of planet gears 114A, 114B and 114C of different
radius. As shown, each set of the planet gears may include thee gears, each of
same radius. The first radius is smaller than the second radius, and the second
radius is smaller than the third radius. The radius of the first planet gear, second
planet gear and third planet gear may be unique relative to each other. The set
of planet gears 114A with the smallest radius may be in mesh with sun gear 112
and the set of planet gears 114C with the largest radius may be in mesh with the
ring gear 106.
[034] Each carrier arm of the plurality of carrier arms 110 may
include a plurality of slots 116 as shown in figure, for mounting a plurality of
axles 118. Each carrier arm of the plurality of carrier arm 114 may have more
than three slots 116. Each of the planet gear 114 may be mounted on an
associated carrier arm via associated axle. Each planet gear may be free to rotate
with respect to their mounting axles on the carrier arm.
[035] The gear system 100 may further include a plurality of axles
118 to mount the plurality of planet gears. These axles may be mounted on the
associated carrier arms via the slots provided on the associated carrier arm. Each
of the first axle, the second axle, and the third axle may be mounted on the
associated carrier arm 110 via a slot of the plurality of slots 116.
[036] By way of an example, the first planet gear 114A may be
mounted on the associated carrier arm 110-1 via the axle 118, and this axle 118
may be mounted on the associated carrier arm 110 via the first slot 116.
Similarly, the second planet gear 114B may be mounted on the associated
carrier arm via another axle 118, and this axle 118 may be mounted on the
associated carrier arm via the second slot 116. Likewise, the third planet gear
114C may be mounted on the associated carrier arm 110 via a yet another axle
118, and this axle 118 may be mounted on the associated carrier arm via the
third slot 116.
[037] It may be noted that the position of the first planet gear 114A,
the second planet gear 114B, and the third planet gear 114C may be changeable
on the associate carrier arm 110. Further, it may be possible to change the size
(radius) of the first planet gear 114A, the second planet gear 114B, and the third
planet gear 114C. In other words, it may be possible to remove the set of planet
gears (i.e., first planet gear 114A, the second planet gear 114B, and the third
planet gear 114C) from the carrier shaft 110 and replace with the another set of
planet gears having different dimensions. For example, one combination of the
radius of the set planet gears (i.e., first planet gear 114A, the second planet gear
114B, and the third planet gear 114C) may be 2 centimeters (cms), 4 cms, and
6 cms, respectively. As such, the slots 116 for the first planet gear 114A and
the second planet gear 114B may be separated by 6 cms, and the slots for the
second planet gear 114B and the third planet gear 114C may be separated by 10
cms. Another combination of the radius of the set planet gears (i.e., first planet
gear 114A, the second planet gear 114B, and the third planet gear 114C) may
be 1 cm, 3 cms, and 8 cms, respectively. As such, the slots 116 for the first
planet gear 114A and the second planet gear 114B may be separated by 4 cms,
and the slots for the second planet gear 114B and the third planet gear 114C
may be separated by 11 cms.
[038] It may be understood that once the power input is given to rotate
the carrier 102, this rotation of the carrier may get transmitted to the plurality
of the carrier arms 110 on which the planet gears are assembled via axles.
[039] Due to the different radii of the first planet gear 114A, the
second planet gear 114B, and the third planet gear 114C, the speed (RPM) of
the sun gear 112 may increase with respect to the speed (RPM) of the carrier
102 or the plurality of the planet gears 114.
[040] In some embodiments, the gear system 100 may also be
configured to reduce revolutions per minute at the output. For obtaining this,
the sun gear 112 may be configured to act as a driver, and input shaft may be
connected to the sun gear 112. Accordingly, the output of reduced speed may
be obtained at the carrier 102, i.e. the ring gear 106, as per the load/torque
requirement.
[041] A system for increasing speed is disclosed. The system may
include a driver shaft rotating at a first speed. The driver shaft may be rotated
at a slow speed, for example, by one or more domesticated farm animals. In
order to convert the mechanical energy obtained at the driver shaft from the one
or more domesticated farm animals, the speed may be required to be increased.
To this end, the system may further include the gear system 100, as already
discussed above. As such, the gear system 100 may include the carrier 102
coupled to the driver shaft. The carrier 102 may include the central hub 104
including the coupler 104A, and the ring gear 106 coaxial with the central hub
104. The ring gear 106 may include the plurality of gear teeth 108 defined on
an inner side of the ring gear 106. The carrier 102 may further include the
plurality of carrier arms 110. Each of the plurality of carrier arms 110 may be
attached to central hub 104 via the first end 110A of the associated carrier arm
110 and to the ring gear 106 via the second end 110B of the associated carrier
arm 110. The system may further include the sun gear 112 coaxial with the
central hub 104 and the ring gear 106, and rotatable around a central axis (AA)
passing through the centre of the sun gear 112, the central hub 104, and the ring
gear 106. The system may further include the plurality of sets of planet gears
114. Each set of the plurality of sets of planet gears 114 may include the first
planet gear 114A having the first radius, the second planet gear 114B having
the second radius, and the third planet gear 114C having the third radius. The
first planet gear 114A may be configured to mesh with the sun gear 112 and the
second planet gear 114B. The second planet gear 114B may be configured to
mesh with the first planet gear 114A and the third planet gear 114C. The third
planet gear 114C may be configured to mesh with the second gear 114B and the
ring gear. Each of the first planet 114A, the second gear 114B, and the third
planet gear 114C may be mounted on an associated carrier arm of the plurality
of carrier arms 110. The first radius, the second radius, and the third radius may
be unique relative to each other.
[042] A driven shaft may be coupled to the sun gear 112. The driven
shaft may be configured to run at a second speed as a result of a higher gear
ratio obtained from the gear system 100. As a result, second speed is greater
than the first speed. It should be noted that the first radius is smaller than the
second radius, and the second radius is smaller than the third radius.
[043] Similarly, the gear system 100 may be used for decreasing
speed. To this end, a system for decreasing speed is disclosed. The system may
include a driver shaft rotating at a first (higher) speed. The system may further
include the gear system 100, as already discussed above. As such, the gear
system 100 may include the carrier 102. The carrier 102 may include the central
hub 104 including the coupler 104A, and the ring gear 106 coaxial with the
central hub 104. The ring gear 106 may include the plurality of gear teeth 108
defined on an inner side of the ring gear 106. The carrier 102 may further
include the plurality of carrier arms 110. Each of the plurality of carrier arms
110 may be attached to central hub 104 via the first end 110A of the associated
carrier arm 110 and to the ring gear 106 via the second end 110B of the
associated carrier arm 110.
[044] The system may further include the sun gear 112 coupled to the
driver shaft and coaxial with the central hub 104 and the ring gear 106, and
rotatable around a central axis (AA) passing through the centre of the sun gear
112, the central hub 104, and the ring gear 106. The system may further include
the plurality of sets of planet gears 114. Each set of the plurality of sets of planet
gears 114 may include the first planet gear 114A having the first radius, the
second planet gear 114B having the second radius, and the third planet gear
114C having the third radius. The first planet gear 114A may be configured to
mesh with the sun gear 112 and the second planet gear 114B. The second planet
gear 114B may be configured to mesh with the first planet gear 114A and the
third planet gear 114C. The third planet gear 114C may be configured to mesh
with the second gear 114B and the ring gear. Each of the first planet 114A, the
second gear 114B, and the third planet gear 114C may be mounted on an
associated carrier arm of the plurality of carrier arms 110. The first radius, the
second radius, and the third radius may be unique relative to each other.
[045] A driven shaft may be coupled to the carrier 102. The driven
shaft may be configured to run at a second (lower) speed as a result of a lower
gear ratio obtained from the gear system 100. As such, second speed is lower
than the first speed.
[046] It is intended that the disclosure and examples be considered as
exemplary only, with a true scope and spirit of disclosed embodiments being
indicated by the following claims.

We Claim:
1. A gear system (100) comprising:
a carrier (102) comprising:
a central hub (104) comprising a coupler (104A);
a ring gear (106) coaxial with the central hub (104), wherein
the ring gear (106) comprises a plurality of gear teeth (108) defined on
an inner side of the ring gear (106); and
a plurality of carrier arms (110), wherein each of the plurality
of carrier arms (110) is attached to central hub (104) via a first end
(110A) of the associated carrier arm (110) and to the ring gear (106)
via a second end (110B) of the associated carrier arm (110);
a sun gear (112) coaxial with the central hub (104) and the ring gear
(106), and rotatable around a central axis (AA) passing through the centre of
the sun gear (112), the central hub (104), and the ring gear (106); and
a plurality of sets of planet gears (114), wherein each set of the
plurality of sets of planet gears (114) comprises:
a first planet gear (114A) having a first radius;
a second planet gear (114B) having a second radius; and
a third planet gear (114C) having a third radius,
wherein the first planet gear (114A) is configured to mesh
with the sun gear (112) and the second planet gear (114B),
wherein the second planet gear (114B) is configured to mesh
with the first planet gear (114A) and the third planet gear (114C),
wherein the third planet gear (114C) is configured to mesh
with the second gear (114B) and the ring gear (106),
wherein each of the first planet (114A), the second gear
(114B), and the third planet gear (114C) is mounted on an associated
carrier arm of the plurality of carrier arms (110), and
wherein the first radius, the second radius, and the third radius
are unique relative to each other.
2. The gear system (100) as claimed in the claim 1, wherein the
wherein the sun gear (112) is configured to act as a driven gear, and
wherein the plurality of the planet gears (114) is configured to act as a
driving gear, and the ring gear (106) is configured to act as a fixed gear.
3. The gear system (100) as claimed in the claim 1, wherein the plurality of
sets of planet gears (114) comprises three sets of planet gears (114-1, 114-2,
and 114-3).
4. The gear system (100) as claimed in the claim 1, wherein:
the first radius is smaller than the second radius, and
the second radius is smaller than the third radius.
5. The gear system (100) as claimed in the claim 1, wherein each carrier arm of
the plurality of carrier arms (110) comprises a plurality of slots (116) for
mounting a plurality of axles (118), wherein the plurality of slots (116) is
greater than three.
6. The gear system (100) as claimed in the claim 1, wherein:
the first planet gear (114A) is mounted on an associated carrier arm
via a first axle (118),
the second planet gear (114B) is mounted on the associated carrier
arm via a second axle (118), and
the third planet gear (114C) is mounted on the associated carrier arm
via a third axle (118).
7. The gear system (100) as claimed in the claim 1, wherein:
each of the first axle (118), the second axle (118), and the third axle
(118) are mounted on the associated carrier arm via a slot of the plurality of
slots (302),
wherein the position of the first axle (118), the second axle (118), and
the third axle (118) is changeable.
8. A system for increasing speed, the system comprising:
a driver shaft rotating at a first speed;
a gear system (100) comprising:
a carrier (102) coupled to the driver shaft, the carrier (102)
comprising:
a central hub (104) comprising a coupler (104A);
a ring gear (106) coaxial with the central hub (104),
wherein the ring gear (106) comprises a plurality of gear teeth
(108) defined on an inner side of the ring gear (106); and
a plurality of carrier arms (110), wherein each of the
plurality of carrier arms (110) is attached to central hub (104)
via a first end (110A) of the associated carrier arm (110) and
to the ring gear (106) via a second end (110B) of the
associated carrier arm (110);
a sun gear (112) coaxial with the central hub (104) and the
ring gear (106), and rotatable around a central axis (AA) passing
through the centre of the sun gear (112), the central hub (104), and the
ring gear (106); and
a plurality of sets of planet gears (114), wherein each set of
the plurality of sets of planet gears (114) comprises:
a first planet gear (114A) having a first radius;
a second planet gear (114B) having a second radius;
and
a third planet gear (114C) having a third radius,
wherein the first planet gear (114A) is configured to
mesh with the sun gear (112) and the second planet gear
(114B),
wherein the second planet gear (114B) is configured
to mesh with the first planet gear (114A) and the third planet
gear (114C),
wherein the third planet gear (114C) is configured to
mesh with the second gear (114B) and the ring gear (106),
wherein each of the first planet (114A), the second
gear (114B), and the third planet gear (114C) is mounted on
an associated carrier arm of the plurality of carrier arms
(110), and
wherein the first radius, the second radius, and the
third radius are unique relative to each other; and
a driven shaft coupled to the sun gear (112), wherein the driven shaft
is configured to run at a second speed, wherein the second speed is greater than
the first speed.
9. The system as claimed in the claim 8, wherein:
the first radius is smaller than the second radius, and
the second radius is smaller than the third radius.
10. A system for decreasing speed, the system comprising:
a driver shaft rotating at a first speed;
a gear system (100) comprising:
a carrier (102) comprising:
a central hub (104) comprising a coupler (104A);
a ring gear (106) coaxial with the central hub (104),
wherein the ring gear (106) comprises a plurality of gear teeth
(108) defined on an inner side of the ring gear (106); and
a plurality of carrier arms (110), wherein each of the
plurality of carrier arms (110) is attached to central hub (104)
via a first end (110A) of the associated carrier arm (110) and
to the ring gear (106) via a second end (110B) of the
associated carrier arm (110);
a sun gear (112) coupled to the coupled to the driver shaft and
coaxial with the central hub (104) and the ring gear (106), and
rotatable around a central axis (AA) passing through the centre of the
sun gear (112), the central hub (104), and the ring gear (106); and
a plurality of sets of planet gears (114), wherein each set of
the plurality of sets of planet gears (114) comprises:
a first planet gear (114A) having a first radius;
a second planet gear (114B) having a second radius;
and
a third planet gear (114C) having a third radius,
wherein the first planet gear (114A) is configured to
mesh with the sun gear (112) and the second planet gear
(114B),
wherein the second planet gear (114B) is configured
to mesh with the first planet gear (114A) and the third planet
gear (114C),
wherein the third planet gear (114C) is configured to
mesh with the second gear (114B) and the ring gear (106),
wherein each of the first planet (114A), the second
gear (114B), and the third planet gear (114C) is mounted on
an associated carrier arm of the plurality of carrier arms
(110), and
wherein the first radius, the second radius, and the
third radius are unique relative to each other; and
a driven shaft coupled to the carrier (102), wherein the driven shaft is
configured to run at a second speed, wherein the second speed is lesser than
the first speed.