Type Ⅱ sealing end is integral, with small tooth spacing, relatively small radial displacement, compact structure, small moment of inertia, and can be connected with Y and J1 shaft extensions. 
　　The drum gear coupling has the ability to compensate for axis deviations in the radial, axial and angular directions. It has the advantages of compact structure, small turning radius, large carrying capacity, high transmission efficiency, low noise and long maintenance period. It is especially suitable for Low-speed and heavy-duty working conditions, such as metallurgy, mining, lifting and transportation industries, and also suitable for shafting transmission of various machinery such as petroleum, chemical industry, general machinery, etc. The drum gear coupling is a rigid-flexible coupling. Gear coupling is composed of internal gear ring with the same number of teeth and flange half coupling with external teeth.The external teeth are divided into straight teeth and drum teeth. The so-called drum teeth means that the external teeth are made into a spherical surface. The center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. The drum-shaped gear coupling can Allows a larger angular displacement (compared to the straight tooth coupling), which can improve the contact conditions of the teeth, increase the torque transmission capacity, and prolong the service life.The contact state along the tooth width when there is angular displacement.When the gear coupling is working, the two shafts produce relative angular displacement, and the tooth surfaces of the internal and external teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption. Therefore, the gear coupling must have a good and Work in a sealed state.Gear couplings have small radial dimensions and large load-bearing capacity. They are often used in shafting transmissions under low-speed and heavy-duty conditions. High-precision and dynamically balanced gear couplings can be used for high-speed transmissions, such as gas turbine shafting. transmission.Since the angular compensation of drum gear couplings is greater than that of straight gear couplings, drum gear couplings are widely used at home and abroad. Straight gear couplings are obsolete products. Those who choose should try not to use them. . 
　　The characteristics of the drum gear coupling (compared with the straight gear coupling has the following characteristics): 1. The drum gear coupling has a strong load-bearing capacity.Under the same outer diameter of the inner gear sleeve and the maximum outer diameter of the coupling, the carrying capacity of the drum gear coupling is 15-20% higher than that of the straight gear coupling on average, and the angular displacement compensation is larger.When the radial displacement is equal to zero, the allowable angular displacement of the spur gear coupling is 2o, and the allowable angular displacement of the drum gear coupling is 1o1, an increase of 30%.Under the same modulus, number of teeth, and tooth width, the allowable angular displacement of the drum-shaped gear is larger than that of the straight tooth. 50. The drum-shaped tooth surface of the drum-shaped gear coupling improves the contact conditions of the inner and outer teeth and avoids Under the condition of angular displacement, the edge of the straight tooth is squeezed and the stress is concentrated. At the same time, it improves the friction and wear of the tooth surface, reduces the noise, and has a long maintenance cycle. 3. The tooth end of the outer gear sleeve of the drum-shaped gear coupling is in the shape of a horn, which makes the assembly and disassembly of the inner and outer gears very convenient. 4. The transmission efficiency of the drum gear coupling is as high as 5%.Based on the characteristics of warp, drum-shaped gears have generally been substituted for straight gear couplings at home and abroad.