Explain the installation of diaphragm coupling and the composition of the coupling?

Coupling is a common connection accessory, which is widely used in chemical production. So, what is the explanation of the composition of the diaphragm coupling device and the coupling? The following is the content about it brought by the editor, Hope to make us have a harvest!

Explanation of the composition of diaphragm coupling equipment and coupling

Before the equipment, first check whether the prime mover and the working machine are concentric, whether there are wrapping paper and bruises on the appearance of the two shafts, whether there are debris in the inner holes of the two half couplings of the coupling, and whether there are bruises on the edges of the inner holes. , If necessary, clean up the shaft and half coupling, and handle the bruise with a fine file.Then check whether the inner hole diameter and length of the two half couplings are consistent with the diameter and shaft elongation of the prime mover and working machine.In general selection, it is better to make the length of the prime mover and the end half of the working machine less than the extension of the shaft 10-30mm.

The following misuse may lead to life risks or severe injuries

1. For safe operation, the coupling and other rotating parts must be maintained by the outer cover.If you touch the parts in these operations, you may be damaged.

2. To prevent risks, it is necessary to equip protective equipment.

3. It is necessary to cut off the power supply when disassembling the equipment.

4. Fastening bolts and countersunk bolts should be tightened with proper strength using a screwdriver, wrench or torque wrench.

5. The operating speed of the product cannot exceed the speed.

6. Stop disassembling or reorganizing products.

This is the precautions for the use of related shafts, please keep in mind.

The coupling is composed of two halves, which are separately connected with the driving shaft and the driven shaft.The general power machine is mostly connected with the working machine by means of a coupling.

Couplings are complex in variety, and can be divided into

a. Fixed coupling.It is mainly used in places where strict alignment of the two shafts is required and no relative displacement occurs during operation. The structure is generally simple, simple to manufacture, and the instantaneous speed of the two shafts is the same. The first are flange couplings, sleeve couplings, and clamps. Shell coupling, etc.

b. Removable coupling.It is mainly used in places where the two shafts have deflection or relative displacement during operation. According to the method of compensating displacement, it can be divided into rigid movable coupling and elastic movable coupling.Rigid movable couplings use the dynamic connection between the working parts of the coupling to have a certain direction or several directions of movement to compensate, such as jaw coupling (allowing axial displacement), cross groove coupling (Used to connect two shafts with small parallel displacement or angular displacement), universal coupling (used in places where the two shafts have a large deflection angle or a large angular displacement during operation), gear couplings (Allowing for induction of displacement), chain coupling (allowing for radial displacement), etc.

c. The elastic movable coupling (referred to as the elastic coupling) uses the elastic deformation of the elastic element to compensate for the deflection and displacement of the two shafts. Together, the elastic element also has buffering and damping functions, such as a serpentine spring coupling Couplings, radial multi-layer leaf spring couplings, elastic ring pin couplings, nylon pin couplings, rubber sleeve couplings, etc.Some couplings are now standardized.When choosing, you should first select the appropriate type according to the job requirements, and then calculate the torque and speed according to the diameter of the shaft, and then find the applicable type from the relevant manuals, and finally make the necessary check calculations for some key parts.

Defects of diaphragm coupling and disposal methods

Diaphragm couplings have small radial specifications and great load-bearing talents. They are long used for shafting transmission under low-speed and heavy-duty conditions. High-precision and dynamically balanced diaphragm couplings can be used for high-speed transmission, such as the shaft of dyeing steam turbines. Transmission line.

Diaphragm couplings have small radial specifications and great load-bearing talents. They are long used for shaft transmission under low-speed and heavy-duty conditions. High-precision and dynamically balanced diaphragm couplings can be used for high-speed transmission, such as the shaft of a steam turbine System transmission. Because the angular compensation of drum-shaped diaphragm couplings is greater than that of straight diaphragm couplings, drum-shaped diaphragm couplings are widely used in China and abroad, and straight diaphragm couplings are classified as the selected product. The person should try not to choose it.

The reasons for the above-mentioned defects are mainly as follows:

, Lifting parts and couplings have insufficient oil or lack of oil. Or improper use of grease causes calcification of the grease, causing the tooth surfaces to not be smooth, or the tooth surface is not smooth, and the tooth surface wears severely. In this situation, you only need to replace the new smooth grease. Write qualified smooth grease on time to prevent oil leakage. If the amount of oil is satisfied, it can be prevented.

, The levelness of the two axes and the coaxial error are too large, which exceeds the plan that the coupling can compensate, which makes the shaft teeth and the internal teeth mesh incorrectly, forming some touches, and presents additional torque. And this additional torque can Decomposed into axial force. Acting on the inner gear ring, the magnitude of this force depends on the size of the fault, and it is proportional to the fault. Displacement. If the displacement is too large, it will be uncontrollable, resulting in severe gear wear, and even broken teeth. Align from the beginning, or align the side of the reel from the beginning. To find the part with a large offset error, first measure the offset of the coupling to which side, that is, measure the levelness and coaxiality of the main shaft and deceleration The levelness and coaxiality of the main shaft of the device can be leveled and corrected according to the quality specification from the beginning to eliminate defects.

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