Connection of LM plum coupling before improvement

Plum couplingThe connection between the motor and the coupling before the improvement is: the mating part of the motor and the half coupling 4 is 6mm, the length is 32mm, there is no keyway on the shaft, and the key connection cannot transmit torque. According to the assembly requirements of the motor, the motor and the half Between the coupling holes adopt transitional fit, the torque is mainly transmitted by the two M5 set screws fixed on the half coupling. During use, this structure has the following shortcomings:

(1) There is a line-to-surface contact between the motor shaft and the set screw, the contact surface is extremely small, and the transmission torque is very limited.

(2) The threaded connection has no anti-loosening function. After several disassembly and long-term operation, the relative rotation and axial movement of the half coupling shaft and the motor shaft will cause the equipment to fail to work.

The plum blossom coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the two shafts connected. It is a high-performance flexible coupling with metal elastic elements. It does not require lubrication, has a compact structure, high strength, and long service life. The rotation gap is not affected by temperature and oil pollution, and has the characteristics of acid resistance, alkali resistance, and corrosion resistance. It is suitable for shafting transmission in high temperature, high speed, and corrosive medium working conditions. It is widely used for shafting transmission of various mechanical devices. Such as water pumps (especially high-power, chemical pumps), extensions (high-speed), compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopter), naval high-speed Power transmission systems, steam turbines, piston-type power mechanical transmission systems, tracked vehicles, and high-speed and high-power mechanical transmission systems of power generation units are commonly used in high-speed transmission shafts after radial dynamic balance.

The overall dimensions of the plum coupling, that is, the large radial and axial dimensions, are within the allowable installation space of the machine and equipment.Choose a coupling that is convenient for assembly and disassembly, does not require maintenance, has a long maintenance period or is convenient for maintenance, does not need to move two shafts when changing wearing parts, and is easy to adjust the middle.

Universal coupling is a mechanical part used to connect two shafts (active shaft and driven shaft) in different mechanisms to make them rotate together to transmit torque.In high-speed and heavy-duty power transmission, some couplings also have the function of buffering, damping and improving the dynamic performance of the shafting.The coupling is composed of two halves, which are respectively 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.

The coupling industry will present the following development trends: First, super-large, ultra-precision, long-life, and couplings will be developed.XNUMX. Couplings integrating multiple materials, multiple colors, multiple layers and multiple cavities, and multiple molding methods will be developed.Third, the steel used in the coupling is refined to ensure the stability of the raw material performance. Such couplings will become the mainstream products in the market.Fourth, the design, processing and various management of the coupling will develop in the direction of digitization and informatization.Fifth, the high-speed, high-precision, and intelligent coupling processing equipment will be further promoted and applied.Sixth, due to the popularization and application of new materials in the coupling industry, couplings with high performance and meeting special purposes will continue to develop, and some special and excellent processing methods will be produced.Seven, reverse engineering, concurrent engineering, compound processing and even virtual technology will be further developed.XNUMX. Will the standardization of couplings continue to improve?With the rapid development of the modern metallurgical industry, high requirements are put forward for the couplings used by metallurgical enterprises.It should not only meet the high-speed, heavy-duty, and high-precision requirements of manufacturers, but also meet the requirements of stable operation, high transmission efficiency, long service life, and easy maintenance.