The cross-shaft universal coupling is a more common coupling in the coupling. The biggest feature is the large amount of angular compensation, compact structure and high transmission efficiency.In actual applications, there are four types according to the transmitted torque. Heavy-duty universal joints are used in Ever-Power machinery, heavy-duty wiring, etc.; medium- and light-duty universal couplings are often used in machine tools, automobiles, etc. Light industrial machinery; small universal couplings are used for precision machinery and control mechanisms, and their role is to transmit motion.
There are several types of cross shaft universal couplings, such asSWC type integral fork head cross shaft universal coupling, SWZ type integral bearing seat cross shaft universal coupling and so on.The main difference between them is the change of the bearing seat and the cross fork.Regardless of the cross-shaft universal coupling, in order to ensure the synchronization of the master and slave ends, in actual applications, a double coupling will be used.The double connection mode of the cross shaft universal coupling: welding connection method and flange bolt connection method.
Cross shaft typeUniversal couplingThe shaft coupling is used to connect the coupling, and its role is to transmit torque.In work, because the cross shaft universal joint bears huge torque and alternating load, its cross journal and needle bearings are very susceptible to wear and other damage.In order to reduce wear and other damage, it is necessary to lubricate the cross shaft coupling.The lubricating oil selected is gear oil, which has the following characteristics:
1. With proper viscosity, it is easy to form a high-strength oil film. The lubricating oil will not be thrown out of the contact surface due to the centrifugal force, which can form a good elastic dynamic pressure lubrication.
2. Gear oil has good oiliness and extreme pressure, and can form a complete lubricating oil film under high-strength working conditions in time.
In actual situations, the lubricating oil may still be thrown out, causing semi-dry friction or dry friction and accelerating wear.So generally there are equipment for filling gear oil, which only needs to be carried out on a regular basisUniversal couplingJust raise.
The cross-shaft universal coupling is a part used to transmit torque. It needs to withstand very large torque and alternating loads during work, so it is very easy to damage.When adding lubrication, according to the maintenance regulations of the vehicle, grease is added to the sliding fork teeth and intermediate bearings as lubricating oil, while in the coupling and intermediate bearings, gear oil needs to be added.In actual operation, many people directly added butter to the cross shaft for the convenience of the diagram, which caused its premature damage.
Why can't we add butter to the cross shaft universal coupling as lubricating oil
Butter is composed of thickener calcium and basic lubricating oil, and its structure is relatively dispersed.However, if the car is running for a long time under overload, the butter will be separated, resulting in no oil film, and the cross shaft will be in a state of semi-dry friction or dry friction during operation.After the grease has deteriorated and evaporated, it will not have the lubricating effect and will hinder the transmission.The oil film of butter has poor toughness and cannot be used in the large torque and negative force of the cross shaft universal coupling.Universal couplingUnder the load, a good oil film is formed.
So, don't use butter instead of gear oil to save trouble. This will cause more trouble.
In order to make the cross universal joint more durable and life-span, some maintenance measures need to be taken.When it is used, it should be fully lubricated, and its bearing part should be added with an appropriate amount of grease once a week when it just starts to run.After it works normally, it can be lubricated once a quarter, and at the same time, pay attention to using an appropriate amount of grease.
In addition, the cross universal joint should be regularly maintained.Under normal circumstances, it needs to be repaired once every six months, but it should be determined according to the specific usage.If there are obvious abnormal noises, oil leakage, etc., the machine should be shut down immediately for inspection, and the problem should be dealt with in time.It is necessary to check its various parts frequently to ensure that there are no signs of wear, peeling, etc. on each rolling surface, and replace those with large indentation or severe wear.Do not use gasoline and steel wire brushes when cleaning, pay attention to wash separately from other parts.
Wuxi Ever-Power Universal Shaft Co., Ltd. is a high-tech private enterprise in my country’s Ever-Power industry, specializing in the production ofSWC cross cardan shaft coupling.The company has a wealth of experience and has successfully developed the SWC type universal joint shaft series. Compared with the QDWC type universal joint shaft series, it has unique advantages compared with all kinds of traditional universal joint shafts.Our company has installed a complete and reasonable sealing device according to the actual design, which reduces the number of refueling, ensures the lubrication of the workpiece, and prolongs the service life. http://www.cardanshaft.xyz/