Xingtai far auto parts manufacturing Co., Ltd.
Xingtai Yuantuo Auto Parts Manufacturing CO., Ltd was founded in 1990,which is a company specialized in center support bearing and torque rod bush in Northern China. It covers an area of 30,000 square meters.
The drive shaft is an important part of the transmission of power in the car drivetrain. Its role is to transfer the power of the engine to the wheels together with the gearbox and drive axle, so that the car produces driving force.
Universal joint is the key part of automobile drive shaft. A car is a moving object. On the rear-drive car, the engine, clutch and transmission are mounted on the frame as a whole, while the drive axle is connected to the frame by an elastic suspension. There is a distance between the two that needs to be connected. The uneven road surface caused the car to jump.
Transmission shaft classification
According to the elastic points
Drive shaft according to its important component - universal joint of different, can have different classification. If there is obvious elasticity in the direction of torsion according to the universal joint, it can be divided into rigid universal joint drive shaft and flexible universal joint drive shaft.
1. Rigid universal joint: transfer power by hinge connection of parts.
2. Flexible universal joint: by elastic parts to transfer power, and has a buffer reduction.
By angular rate
The rigid universal joint can be divided into unequal velocity universal joint (such as cross shaft universal joint), quasi-constant velocity universal joint (such as double universal joint, three pin shaft universal joint) and constant velocity universal joint (such as ball cage universal joint, ball fork universal joint). Constant speed and unequal speed refer to whether the rotational angular rate of the driven axis is equal when the driven axis rotates with the driving axis. Of course, the average rotational speed of the driving axis and the driven axis is equal.
1. Constant velocity universal joint:
A universal joint where the angular velocity of the main and driven axes is equal even when the included Angle between the two axes changes is called a constant velocity universal joint or a constant angular velocity universal joint. They are mainly used for steering drive axle, breaking drive axle and other wheel transmission devices, mainly used for power transmission in cars.
2. Uneven universal joint:
The angular velocity of the main and driven axes is not equal when the Angle between the two axes changes, called the unequal velocity universal joint, also known as the cross shaft universal joint. Cross - shaft rigid universal joint drive shaft is widely used in automobile transmission system and has a long history.
Drive shaft is a rotating body with high speed and little support, so its dynamic balance is very important. The general drive shaft before leaving the factory must be into the action balance test, and the balance machine has been adjusted. For front-engine and rear-wheel drive cars, it is the shaft that transfers the transmission's rotation to the main reducer. It can be several sections, which can be connected by universal joints.
Use of drive shaft
Car drive shaft is mainly used in tanker, refueling truck, sprinkler, sewage truck, suction truck, fire truck, high-pressure cleaning car, road wrecker, aerial work car, garbage truck and other models.
The drive shaft is composed of shaft tube, telescopic sleeve and universal joint. The telescopic sleeve can automatically adjust the change of distance between the transmission and the drive axle. Universal joint is to ensure the change of the Angle between the two axes of the transmission output shaft and the input shaft of the drive axle, and realize the equiangular speed transmission of the two shafts.
What is the cause of unbalanced vehicle vibration of the transmission shaft hanger
Vehicle transmission shaft pylon imbalance during operation has a periodic sound, the faster the speed, the greater the sound. Serious can make the body trembling, because the vehicle body trembling, will cause the loosening of vehicle parts, leading to accidents. Reasons for vehicle vibration caused by unbalanced transmission shaft hanger:
1, drive shaft bending;
2. Welding position of shaft flange and shaft when skew;
3. The middle support bolt is loose;
4. Middle bearing bearing deflection;
5, joint damage, installation is unqualified;
6. The original weight on the drive shaft.
Xingtai Yuantuo Auto parts Manufacturing Co., Ltd. is a professional manufacturer of transmission shaft support and torque rod rubber core. Products cover: Dongfeng, Jiefang, JIANGhuai, Jiangling, Steele, Great Wall, Ford, Iveco, Mercedes Benz, Renault, Volvo, Skania, Dove, Toyota, Mitsubishi, Isuzu, Nissan, Ford, Chevrolet, Hyundai and other more than 100 models, become a fixed point supporting units of many domestic and foreign enterprises.
High bearing temperature is a common and harmful fault of rotating equipment, which affects the service life of bearings and the operation of equipment. When the bearing temperature is too high, it is necessary to quickly determine the cause of the fault and take appropriate measures to solve it. What are the reasons why the temperature of the transmission shaft bearing is too high? Let's learn about it.
The reasons for high transmission shaft bearing temperature may involve the following aspects:
First, the bearing is too tight (interference is too large). In this case, the smaller clearance will reduce the amount of lubricating oil in the bearing, and the heat generated by friction can not be taken away in time. At the same time, the excessive loss of shear friction of grease in the clearance will also cause bearing heating. Therefore, it is necessary to adjust the clearance and check the accuracy.
Two, poor lubrication conditions or unreasonable selection of lubricants. Insufficient or excessive lubrication, and improper selection of lubricants may increase bearing temperature. At the same time, lubricating grease mixing or contamination by impurities will also lead to the destruction of bearing lubrication and the rise of temperature.
3. The configuration form of the bearing itself and the structure of the spindle assembly are unreasonable. This problem belongs to the design itself and cannot be changed in the installation and adjustment process.
Four, bearing abnormalities, such as rust, wear caused by bearing problems, and bearing clearance is too large will also cause unstable rotor operation, leading to bearing vibration, heating.
Fifth, the coupling alignment process does not meet the requirements, rotor dynamic and static imbalance.
Six, the impact of external environmental temperature. Bearings like those located near a heat source are more likely to heat up.