Views:0 Author:Site Editor Publish Time: 2021-03-08 Origin:Site
A normal, simple "u-joint" has a single cross, and 4 cup style needle bearings. If the shaft angles are perfectly aligned, and nothing ever moved laterally or vertically, you could eliminate the u-joint and drive the car with a shaft of metal. As universal joints have different types into different machines, which type of universal joints should be used correctly? What is the difference between universal joints and CV joints?
What is the working principal of universal joint?
What is the difference between universal joint and CV joint?
What are the applications of universal joint?
In order to satisfy transmitting power and adapting to the angle change caused by the up and down jumps generated by the steering and the running of the car, the drive axle of the front drive car, the half shaft and the wheel axle are commonly connected by universal joints. However, due to the limitation of the axial size, the required deflection angle is relatively large. A single universal joint cannot make the instantaneous angular velocities of the output shaft and the shaft input shaft equal, which will easily cause vibration, aggravate component damage, and generate a lot of noise. Therefore, various constant velocity universal joints are widely used.
In front-drive vehicles, each half shaft uses two constant velocity universal joints. The universal joint near the transaxle is the inner universal joint of the half shaft, and the outer universal joint of the half shaft is near the axle. In a rear-drive car, the engine, clutch, and transmission are installed on the frame as a whole, and the drive axle is connected to the frame through an elastic suspension. There is a distance between the two and needs to be connected. During the operation of the car, the bouncing by uneven road surface, load changes, or the position difference between the two assembly installations will cause the angle and distance between the transmission output shaft and the input shaft of the drive axle final reducer to change. Double universal joints are adopted, that is, there is a universal joint at each end of the transmission shaft. Its function is to make the angle between the two ends of the transmission shaft equal, so as to ensure that the instantaneous angular velocity of the output shaft and the input shaft are always equal.
Since the 1600s, universal joints, usually called U-joints, have been used and continue to be used today. The advantage of the U-shaped joint is its simple design. The U-shaped joint looks like a cross with four cylindrical points. These points are connected to the bearing cover through a yoke. Then fix the U-shaped joint in place with a C-clamp, internal snap ring or full-circle ring. Although there is only one design, the U-shaped connector has multiple names, including Spicer connector and Cardan connector. U-shaped joints are used in multiple locations where they connect the transfer case to the front and rear differentials of the 4WD vehicle. Universal joints are also used in vehicles with strong front axles to connect the inner and outer axles.
If you need a larger range of motion, it is recommended to use a constant speed joint, called a CV joint. CV joints are particularly useful on lifting vehicles. Unlike U-shaped joints, which lose speed at certain angles, CV joints are designed to keep the speed constant regardless of the working angle. There is still a limit to the total operating angle of the CV joint, which depends on the type of CV connector used. Unlike U-shaped joints that have the same basic cross pattern, CV joints appear in many different forms that most vehicles using CV joints use multiple styles.
If properly maintained, these joints may last a long time. Some vehicles managed to reach 300,000 miles using their original CV joints. Although U-shaped joints may not last long, you can still get a lot of benefits from it if you are a prudent driver.
While changing out a U-joint may not be your favorite thing to do, most people can do it, even on their own. A U-joint is an especially good pick for people whose off-roading would result in any type of joint snapping. In particular, U-joints are easier to maintain for people who go mudding a lot. The overall replacement cost for U-joints is also significantly less.
The CV joint is able to maintain velocity through a larger range of angles, as well as handling a greater torque load. This makes the CV joint stronger and less susceptible to issues like vibration and friction. This means that CV joints break less.
Typical applications of universal joints include aircraft, electrical appliances, control mechanisms, electronic equipment, instrumentation, medical and optical equipment, ordnance, radios, sewing machines, textile machinery and tool drives.
The universal joint can be made of steel or thermoplastic. Under a given size, steel universal joints have the greatest load-bearing capacity. Universal joints with thermoplastic body parts are used in light industrial applications. Its self-lubricating properties, light weight, negligible recoil, corrosion resistance and high-speed running capabilities are significant advantages. Spherical universal joints are used for high-speed operation and transmission of large torque.
Cross universal joint is the most commonly used form of unequal velocity universal joint, whose function is to use ball-type devices to achieve shaft power output in different directions. Applications are mostly used in the automotive field such as:
Between the transmission and the drive axle of a car with front-engine and rear-wheel drive.
Between the transfer case and the drive axle.
Between the drive axle and the drive axle of a multi-axis drive car. Due to the deformation of the frame, there will be a change in the position of the axis between the two transmission components.
Between the differential of a car with a separate vertical suspension.
The steering right drives the differential between the axle and the wheels.
In the power output device and steering mechanism of the automobile.
Learn more something about universal joints can know the differences of universal joints and CV joints and the applications of universal joints. If you want to buy good shaft couplings with reasonable price, FOSHAN HOUZHE TRANSMISSION EQUIPMENT CO., LTD. is your best choice. Whether from quality or price, or delivery time, we can help customers to open up a further and larger market. We have all types of different universal joint, as well as shaft couplings. And if you have any questions, you can contact us or search us online.