Universal couplingAs an intermediate connecting part in the structure of each motion mechanism, it will have a direct impact on the normal operation of each motion mechanism, so there are several points that must be paid attention to when using it.
1. The universal joint must not exceed the standard of skew and radial displacement caused by the specified axis line, otherwise it will affect its transmission performance.
2. The bolts of the universal coupling must not be loose or damaged.
3. Universal couplings are lubricated for a period of time, usually two to three months of lubricant should be added to prevent serious wear of gears, and the consequences will be more serious.
Along 4, the universal coupling cannot be cracked. If this happens, it needs to be replaced. The method to determine whether there is a crack can be based on the hammer's universal coupling to determine the sound.Safety
The coupling of the universal coupler and the bushing produce passivation. If the lubrication effect cannot meet the established requirements, the machine itself will have a large number of failures, causing surface damage and damaged movement. At this time, the axis surface will appear blue.However, if the lubricant fails, the surface cannot form an oil film and cannot be protected.
When repairing a universal joint, we must not only consider the economic possibility, but also whether the technology can be realized. The person in need of repair has a full understanding of the universal joint, and what is the structure, process, and material of the universal joint. , It is almost reasonable to repair the universal joint.Otherwise, if there is an error in the repair, it will cause difficulties in the second repair.
Universal couplingAs a part of the reducer, the universal coupling plays a role in transmitting torque and is one of the important parts.Next, the editor will introduce to you the matters needing attention when the universal coupling is installed on the reducer:
1. When installing the reducer, relative to the central axis of the middle drive, the error value should not be greater than the used compensation amount of the selected universal joint.The accuracy of centering can prolong the life and make the universal coupling obtain the ideal transmission efficiency.
2. The oil in the oil drain tank should be drained as far as possible to speed up the smooth installation of the machine on the base.If the installation is not secure, the reducer will vibrate and make noise when it is running, causing damage to the bearings and gears.
3. Use bolts to press the universal coupling into the internal thread to avoid damage to the parts.Do not use rigid fixed universal couplings to avoid premature damage to the bearings and even break the output shaft.
If you want to know how to keep the universal joint running smoothly, you must first analyzeUniversal couplingStability of operation.what is this?
1. Connection method of universal coupling
Here is an example of universal coupling for steel rolling mill. The main connection methods are as follows:
①Flange plus face key/face tooth;
②One end is a flange and a face key, and one end is an oval hole;
③One end is a flange and a face key, and one end is a plum-shaped hole;
④Oval hole;
⑤Plum-shaped hole;
⑥An oval hole at one end and a plum blossom hole at the other end.
2. Installation clearance of universal coupling
If the order is too large, the universal coupling will generate strong vibration under normal torque conditions, which will make the coupling unstable and drive the vibration to strengthen the vibration of the universal coupling. Eventually, the universal coupling will be damaged and the gap will be too small, which will increase the difficulty of installation. .Oh
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