Working principle of automobile transmission shaft

Release Time：2020-03-23    

1. Working principle of automobile transmission shaft

       The drive shaft is usually such an annular member that can be connected or assembled, and can be moved and

 rotated in the middle. It is usually made of lightweight and torsion-resistant alloy steel pipe. In terms of structure, 

it is generally composed of a shaft tube, a telescopic sleeve and a universal. The drive shaft is a rotating workpiece

 with high-speed rotation and few support plates. Its rotor dynamic balance is very important. Usually, the drive shaft 

must be tested for rotor dynamic balance before the original factory and adjusted in the balancing machine.

       The automatic shift automatic control system can automatically connect or disconnect some shift clutches and

 brake systems according to the load of the diesel engine (throttle opening) and the driving speed of the car,

 according to the set shift regularity Interruption of fuel supply will most likely lead to an accident in the fuel pipe,

 which will cause clutch fusion or separation, braking system braking system or release, to change the transmission

 system of the transmission gearbox, so as to achieve fully automatic gear shifting.

       The universal joint transmission of the trolley is the first of the key total range of the chassis transmission 

system. It bears a great torque and dynamic load in the work. After long-term application, the technical situation

 will change greatly, which will immediately jeopardize the transmission of the driving force of the diesel engine,

 reduce the high efficiency of the transmission system, increase the material consumption, accelerate the wear of

 the brake disc, and will also harm everything about the gearbox and drive. Working normally. GB7258-2001 

"Technical Standards for Operational Safety of Motor Vehicles" clearly stipulates that the drive shaft does not 

produce vibration and noise during operation, and the center rolling bearing and universal coupling must not be

 cracked or loose. If the control parts are not effective, the universal joint transmission will be abnormal, which

 will lead to driving safety accidents. Although the structure of the universal joint transmission is very simple, the

 conditions and the causes of common failures are indeed complicated, so that the faults can be detected 

conveniently and accurately. Therefore, you should pay attention to the inspection while driving, and confirm and

 diagnose immediately.

      Car transmission system is a general term for all the driving force transmission equipment from the diesel 

engine to the drive car wheel. Different cars are equipped with different transmission systems. Such as trucks 

and some cars, the transmission system is usually composed of clutch, manual transmission, universal joint 

transmission (universal coupling and transmission shaft), drive (automobile differential, transfer case, transmission

 shaft, axle Shell), etc., and many of the automatic transmissions are used in cars. The transmission system includes

 automatic transmissions, universal joint transmissions, drives, etc., that is, automatic transmissions are used to

 replace clutches and manual transmissions.

       The transmission shaft is a key component for transmitting driving force in the automobile transmission.

 It can transmit the driving force of the diesel engine to the car wheel together with the transmission and the drive, 

so that the car can cause the driving force. The general-purpose transmission shaft is mainly used in trucks, fuel 

trucks, sanitation sprinklers, cleaning sewage suction trucks, sewage suction trucks, fire trucks, high-pressure 

cleaning vehicles, road wreckers, aerial work vehicles, sanitation garbage trucks and other vehicle systems. .

Second, the working principle of the transmission shaft

       The drive shaft is based on the three key components of the shaft tube, the telescopic sleeve and the universal

 coupling, which work in cooperation with each other. The transmission shaft is the shaft that can transmit the 

driving force in the transmission shaft of the universal joint transmission.For the car with the front and rear drive 

of the external module, it is the shaft that transfers the rotation of the gearbox to the car differential.It can be 

several sections. The joint between the joints can be connected by a universal coupling. The universal coupling 

is the core component on the drive shaft. The drive shaft of the front axle assembly that bears both the drive and 

the brakes is in the middle of the wheel.

       Traditional structure of the transmission shaft telescopic sleeve is to weld the spline sleeve and the boss fork

 to weld the spline shaft to the transmission shaft tube. The new type of transmission shaft is changed from the

 traditional structure, and the spline sleeve and the transmission shaft tube are welded into an integration, 

and the spline shaft and the boss fork are integrated.This type of transmission shaft is raised outside the spline 

shaft of the boss A tube-shaped hermetic cell phone case was set, and two rubber oil seals of polyurethane

 material were set at the beam end of the cell phone case.

         Most of the sleeves are made of copper, but there are also sleeves made of plastic.The sleeves are mostly 

placed in the shaft and the bearing structure, and are very close to the bearing structure, only the shaft can

 rotate on the sleeve , When assembling the spool and bushing, lubricating fluid will be added between the 

two to reduce the sliding friction caused by their rotation.