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Constant Mesh Gearbox - Components, Working Principle, Advantages, Disadvantages, Applications

Constant Mesh Gearbox: Components, Working, Advantages, Disadvantages, & Applications:

Constant Mesh Gearbox:

The Constant Mesh gearbox is a direct drive gearbox that uses the principle of meshes to convert rotational motion into linear motion. Constant Mesh Gearbox has different types of shafts, and gears in it. arranging them in a unique manner to get the required output. The constant mesh gearbox is a simple and durable design that requires no lubrication. It has no differential and can withstand very high torques and loads. It also allows for faster changing speeds than traditional epicyclic gears, especially when there are multiple shifts in the transmission.

Components, Construction & Working of Constant Mesh Gearbox:

This gearbox consists of two main shafts called lay shaft and main shaft, the main shaft consists of a different number of shafts, these gears are placed in a constant shaft with the gears on layshaft and the main shaft is provided with the two dog clutches arranged in between the clutch gear and second gear, the other one is placed in between the reverse gear and first gear. The function of different gears work according to the dog meshes with the clutches and obtains a required speed gear to transfer the motion. The Constant Mesh gearbox is a special kind of gearbox that has two sets of gears on the same shaft, with only one set having teeth on it.

Advantages of Constant Mesh gearbox:

  • Constant Mesh gearbox provides smooth function, and for smooth engagement synchronizing device can use in it.
  • It can be made to work quite well for applications where low power and high speed are needed.
  • The Constant Mesh Gearbox is used in many vehicles because of its great speed and smooth operation.
  • In this damages does not occur to gear wheel directly it only affects the dog clutch.
  • This does not produce any noise at the time of function of gears and power transmission.
  • It does not require double clutching.
  • Failure of gears does not occur in it.

Disadvantages of Constant Mesh gearbox:

  • In this type of gear, shifting is not as quickly as possible.
  • Defects occur in this type of gears is more.

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