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    The 4 major characteristics of the coupling and the tooth punching phenomenon of the drum-shaped gear coupling

    Release Date: 2021-06-04 Publisher: admin

    There are many types of couplings. According to whether they contain elastic elements, they can be divided into two categories: rigid couplings and elastic couplings: elastic couplings have elastic elements, so they can absorb vibration and mitigate shocks. Use elastic deformation to compensate for the possible offset of the two axes to different degrees; rigid couplings can be divided into two types according to their structural characteristics: fixed and translational. The former does not have the ability to compensate for displacement, and the latter uses the gap between certain components. Relative movement compensates for the offset of the two axes.Generally, the compensation ability of rigid movable coupling is higher than that of elastic coupling, but it has no ability to absorb vibration and alleviate impact.

    Standard couplings are easy to purchase, and the price is much cheaper than non-standard couplings designed by ourselves.Among the many standard couplings, the correct choice of the best coupling that suits your needs is related to the working performance, performance, service life, vibration, noise, energy saving, transmission rate, transmission accuracy, and economy of mechanical product shafting transmission. A series of problems are also related to the quality of mechanical products.

    There are many types, types, and specifications of couplings. On the basis of correct understanding of the concepts of types, types, and specifications, the couplings should be selected according to the needs of transmission. First, choose from the couplings that have been formulated as standards. At present, I have There are dozens of types of couplings formulated as global and industry standards. Most of these standard couplings are universal couplings. Various couplings have their own characteristics and suitable ranges, and can basically achieve a variety of working conditions. Yes, under normal circumstances, designers do not need to design the coupling by themselves, and only design the coupling when the existing standard coupling cannot meet the needs.

    What are the characteristics of the coupling?

    XNUMX. Compensating the misalignment of the two axes, the angular displacement can be doubled compared with the gear coupling, the reaction force is small during radial displacement, the flexibility is large, and the corresponding axial, radial and angular displacement are allowed.

    XNUMX. It has obvious shock absorption, no noise and no wear.

    80. Adapt to work in high temperature (-300+XNUMX) and harsh environments, and can operate stably under shock and vibration conditions.

    Fourth, the transmission speed is good.Especially suitable for medium and high power transmission.

    In addition, the structure of the coupling is relatively simple and compact. It is easy to install or disassemble. This is also a main reason why people like to use it. The more important thing is the accuracy of the coupling. All will not produce a little error, will not affect our use.

    The drum gear coupling has the characteristics of compensating displacement, reduces the additional load caused by the axis displacement, improves the working stability and performance of the transmission device, and thus prolongs the service life of the transmission device.The drum gear coupling is a new type of drum gear coupling based on the spur gear coupling and digesting and absorbing technology.It is composed of an outer gear sleeve with a drum-shaped tooth thickness and a matching inner gear ring that connects two shafts. It is suitable for heavy load and two-axis transmission that requires axis displacement compensation.Under normal circumstances, it is required that the two shafts to be connected are concentric, and it is impossible to continue to maintain the concentric state during operation. Because of installation errors, bearing wear, force deformation, foundation sinking, etc., the axis produces radial and angular axis. To displacement.

    The internal structure of the drum gear coupling is very complicated, and the materials used have corresponding requirements to meet the requirements of torque and speed.The drum-shaped tooth surface of the drum-shaped gear coupling improves the contact conditions of the inner and outer teeth, avoiding the disadvantages of spur tooth end edge extrusion and stress concentration under angular displacement conditions, and at the same time improving tooth surface friction, The wear condition reduces the noise and the maintenance cycle is long.

    What is the reason for the tooth punching of the drum gear coupling?

    XNUMX. Incorrect maintenance plan: After the gear reducer of the ball mill is geared, in order to resume production, which shaft and gear are generally replaced by which shaft is geared, the new and old gears can not run in normally and the meshing condition of the new and old gears is good.An impact phenomenon occurred during operation, which caused the gear to break easily.

    XNUMX. The gear processing quality is poor: the tooth roots with high stress concentration are rough, not smooth transition, which exacerbates the stress concentration effect; the material processing is poor, the grain streamline cannot be distributed along the tooth profile, and good comprehensive mechanical properties cannot be obtained; It is a cantilever load, the tooth root is equivalent to the fulcrum of the cantilever beam, the tooth root part bears a large bending stress, cracks will occur at the tooth root.

    XNUMX. Because the online gear has been partially worn or partially failed, the contact condition of the new gear is not good when meshing with it.In order for the gears to mesh normally, they should be arranged as a platform for sufficient running-in.Through running-in, the contact area of ​​the gear teeth can be increased, the surface finish and contact accuracy of the gear teeth can be improved, and the local stress can form a cold work hardened tooth surface layer, thereby improving the load-bearing capacity of the gear and prolonging the service life.