The specific disassembly steps of the plum blossom coupling and the considerations when selecting it

OnPlum couplingBefore disassembling, make some marks on the coordinated positions of the various parts of the coupling for reference during reassembly.For couplings used in high-speed machines, the connecting bolts have been weighed and marked clearly and cannot be mistaken.

Cleaning, cleaning and quality assessment of all parts of the plum blossom coupling is an extremely important task after the coupling is disassembled.The evaluation of components refers to the comparison of the existing conditions of the size, shape and material properties of each component with the quality standards determined by the component design to determine which components can continue to be used and which components should be used. After use, which ones belong to the parts that should be scrapped and updated.

In the process of disassembling the plum blossom coupling,The difficult task is to remove the hub from the shaft.For the hub of the coupling, a three-legged puller or a four-legged puller is generally used for disassembly.The selected puller should match the outer dimensions of the hub, and the right-angle hooks of each leg of the puller should be properly combined with the rear side of the hub, so that the imagination of slippage will not occur when exerting force.This method is only used for disassembly of hubs with relatively small interference. For hubs with relatively large interference, heating methods are often used, or at the same time with hydraulic jacks for disassembly.

The type of plum coupling should be determined according to the use requirements and working conditions.The following points can be considered when making specific choices:

(1) The size and nature of the torque to be transmitted and the requirements for cushioning and vibration reduction.

(2) The working speed of the coupling and the size of the centrifugal force caused by it, for high-speed drive shafts, a coupling with a high degree of balance should be selected.

(3) The magnitude and direction of the relative displacement of the two axes. After installation and adjustment, it is difficult to keep the two axes strictlyWhen centering, or when the two shafts have a large additional relative displacement during the working process, a flexible coupling should be selected.

(4) The performance and working environment of the coupling are usually made of metal components and do not require lubrication. Compared with couplings that require lubrication, their performance is easily affected by the degree of lubrication and may pollute the environment.

(5) For the manufacture, installation, maintenance and cost of the coupling, on the premise of satisfying the use performance, a coupling that is easy to assemble and disassemble, simple to maintain, and low in cost should be selected.