Gear Shift Transmission
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High Power
Gear Shift Transmissions
It is generally believed that the gear shift transmission is
capable to exert 20% more horse power to the rear wheels of the
four-wheelers rather than an High Speed Train (HST). The gear shift
transmission gets some hp advantage over the hydrostatic
transmission. |
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There is a transmission housing in the Gear Shift Transmission used
for the motor vehicles. This transmission housing has an axle housing, a
housing bell and an intermediate plate. To support the output and input
shaft of the gear shift transmission, there are three supporting areas.
These three support-giving places are: 1) in the intermediate plate, 2) in
the front bearing plate of the axle housing, and 3) in the rear bearing
plate of the housing bell. In the axle housing, the reverse gear and the
lower forward gear are kept, whereas the housing bell is the place, where
the higher forward gears are arranged.
A Multi-Stage Gear Shifting Transmissions
The Multi-Stage gear Shifting Transmission comprises a lot of forward stage
gear trains. All these gear trains can be arranged and established in a
reverse order. Apart from forward stage gear trains, there is a reverse
stage gear train also present in the multi-stage gear shifting transmission.
This reverse stage gear train is attached with the reverse input gear and
another reverse output gears through an idle gear portion located in it. All
the forward and reverse stage gear trains are placed in between the output
and input shafts, and this placement is done in such a fashion, so that all
these gear trains become parallel to the input shaft.
The clutch mechanism established by the reverse stage is placed in the
middle of the reverse stage gear train. The idle gear portion is divided
into two parts. In the first part, the idle gear is attached with the
reverse input gears. In the second part, the idle gear is attached with the
reverse output gear. The idle gear in the second part can connect with the
idle gear of the first part through a mechanism. This special mechanism is
called as reverse stage establishing clutch mechanism.
This mechanism comprises a sleeve, which is connected with the first idle
gear. This connection provides relative non-rotation and axial relative
movement to the idle gear of the first part. This mechanism is also capable
of being meshed with the second part idle gear. For generating axial
movement, a breaking device is fixed in between of first and second idle
gears. This insertion induces the breaking device to go forward to the
second idle gear and this happens as a result of the movement of the sleeve
towards the second idle gear. When the braking device goes towards the
second idle gear, the fixed part starts to exert fixed frictional force.
Gear-Shift Mechanism for a Manual
Transmission
First, second and third shift heads are arranged in a sequential order in a
Gear Shift Mechanism of a manual transmission. For building first and second
gear trains, the first shift head is joined to the first synchronizer, and
for building the third and fourth gear trains, the second shift head in
connected to the second synchronizer. To build the reverse gear train, the
third shift head is being connected (operationally) to a shift fork. For
short timing operation, the gear-shift mechanism is arranged to operate the
first synchronizer in shifting operation. This shifting operation helps in
establishment of the reverse gear train.
