Gear Shift Transmission

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.

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.