Characteristics of single-stage and two-speed main reducer for tank trucks

The single-stage main reducer of the tanker has only one pair of bevel gears, and the structure is simple. The two-stage main reducer is the main reducer adopting two-stage deceleration. Generally, the first stage is the bevel gear transmission, and the second stage is the cylinder slope. Gear drive. This is because the main reducer with a relatively large deceleration, if a pair of bevel gears, the diameter of the driven bevel gear is too large, so that the minimum ground clearance of the car is too small, the passability is too bad, so often used two-stage main deceleration Device.
The driving bevel gear of the tanker is usually integrated with the shaft, and its supporting methods are two kinds of straddle type and suspension type. The strut type can obtain larger supporting rigidity, which is beneficial to the improvement of the service life of the driving bevel gear, and can be input at the input end. The use of bearings close to each other helps to reduce the longitudinal length of the main reducer.
There are two common adjustment devices for the preload of the driven bevel gear bearings of tanker trucks. One is to use two adjustment nuts to adjust the preload of the bearings on both sides of the differential case; the other is in the differential. The outer ring of the outer ring of the bearing or the end face of the inner ring is adjusted by adding or subtracting the gasket.
Between the raceway and the rolling body will certainly produce a certain degree of elastic deformation, to improve its support stiffness. Active bevel gear bearing pre-tightening more adjustment gasket adjustment, if the distance between the two cone bearing outer ring has been set, you can increase or decrease the two The distance between the bearing rings to adjust.
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