Automobile drive shaft is the fourth spare part, and the function can be said to be the transmission of driving force of this kind of equipment. The function of the propeller shaft is to transmit the driving force of the transmission to the driving wheels, so that the car can move forward or backward normally. If it is destroyed, there will be a sharp acceleration or hacking sound. Driving at high speeds can also cause the steering wheel to shake. Next, let's take a look at the raw materials of automobile transmission shafts with the editor.
The common raw materials for shaft parts are 45, 46 and 60 high-quality alloy steel, and 46 steel is more commonly used. Carbon structural steels such as Q235 and Q255 can also be used for shafts with small loads or less critical loads. Carbon steel can be used for large supports, radial specifications, net weight restrictions, or some requirements. For example, 50Cr carbon steel can be used in working places with medium precision and high speed, and the raw material has good comprehensive physical properties after heat treatment; The use of Cr15, 63Mn and other carbon steel can be used for higher precision, the working standard is weaker, this raw material after aging treatment and surface quenching its wear resistance, fatigue resistance limit characteristics are good; If the shaft parts working under the high speed and heavy load standards are made of 30Cr, 30CrMnTi, 30Mn2B and other high-carbon steels or 37CrMoA1A carburizing steels, this kind of steel not only has high surface strength after carburizing and quenching or nitriding treatment, but also has a significant increase in the compressive strength of its core, so it has excellent wear resistance, fracture toughness and fatigue resistance limit. Malleable cast iron and high-toughness pig iron are often selected in the shaft for the analysis of the appearance structure of the production because of their good forging characteristics and shock-absorbing characteristics. It is very much in China's research and development of magnesium malleable cast iron, good fracture toughness, together with the advantages of friction reduction, vibration absorption, low stress sensitivity, etc., has been used in the production and manufacture of trolleys, large tractors, CNC lathes on the key shaft parts.
Automobile transmission shafts are composed of shaft tubes, telescopic sleeves and cross shafts. The telescopic sleeve adjusts the spacing between the transmission and the transaxle fully automatically. The cross shaft is to ensure the transformation of the intersection angle between the output shaft of the transmission and the two centerlines of the key shaft of the drive axle, and to establish a constant angular transmission system of the two shafts. Usually it is composed of cross shafts, cross shafts, cross line rolling bearings and boss forks. The cross shaft of the transmission shaft for heavy-duty vehicle applications of the Steyr series products is made of roller cross shaft rolling bearings, which are matched with short and thick cross shafts to transmit large rotation distances. A butterfly spring is provided under the inner bore of the rolling bearing to clamp the roller. The bore of the cross shaft is enhanced with a reinforced polyester gasket with spiral grooves to avoid calcination when transferring drive force at large intersections or at large rotational distances.
The automobile transmission shaft is upgraded with a tubular sealed mobile phone sleeve outside the boss spline shaft, and two polyurethane rubber oil seals are set at the end of the mobile phone sleeve beam, so that the telescopic sleeve produces a completely sealed indoor space, so that the telescopic spline shaft is not corroded by the external wind and sand, and is not only anti-fouling and anti-rust treatment. Therefore, when wiping lubricating grease in the spline shaft and sleeve at one time in the assembly line, the application regulations can be thoroughly considered, and the injector is not required to be moistened, which reduces the maintenance content.
The trolley selects different forms of transmission shafts according to the different drive modes, the 4×2 drive mode trolley has only one main drive shaft, the 6×4 drive mode trolley has the middle drive shaft, the main drive shaft and the vertical, the car rear axle drive shaft, the 6×6 drive mode trolley not only has the middle drive shaft, the main drive shaft and the vertical, the car rear axle drive shaft, and also has the front axle assembly drive shaft, and the middle drive shaft of the long wheelbase car is usually provided with the transmission shaft is in the middle of the support plate. This is made up of a support frame, rolling bearings and vulcanized rubber support plates.
I can't imagine that there are so many categories of raw materials for automobile transmission shafts. The tightening condition of the transmission shaft bracket should be checked frequently, whether the vulcanized rubber of the support plate is damaged, whether the connection position of the transmission shaft is loose, and whether the transmission shaft is deformed. The cross-axle cross-wire rolling bearings should be filled with grease frequently, and No. 3 lithium grease should be introduced in summer and No. 2 lithium grease in winter.
