Mechanical Gearbox of Forklift

The mechanical gearbox is one of the main components of the internal combustion forklift drive system parts. In the use of the forklift, the gearbox and the engine work together to ensure that the forklift has good power performance and economic performance. The internal combustion forklift gearbox is generally divided into two categories: step-by-step and continuously-variable according to the speed ratio change. A stepped gearbox means that the gearbox has several gears, and each gear has a fixed transmission ratio, which is called a mechanical gearbox through gear transmission; changes, automatically and steplessly change the transmission ratio and torque.

1) Function

①It is used to change the speed and torque of the transmission system, so that the forklift can obtain the required driving speed and traction.

②In the case of keeping the engine running smoothly, the forklift can be reversed.

③ When the forklift is temporarily stopped, the neutral position of the gearbox can be used to disengage the engine and the transmission system, so that the engine can run at idle speed without turning off the engine.

2) Structure

The mechanical gearbox commonly used in internal combustion forklifts is mainly composed of a box body, a driving shaft (input shaft), an intermediate shaft, an idler shaft (for shifting) and an output shaft. Each shaft has one or several different numbers of teeth. Gears, these gears use the shift handle to shift gears through two sets of meshing sleeve synchronizers installed on the intermediate shaft, and the output gearshaft transmits power to the drive wheels through the low-speed gears, differentials and half shafts. In order to achieve the purpose of changing the speed of the forklift.

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