GICLZ type drum gear coupling

GⅠCLZ type-drum gear coupling (JB/T 8845.3-2001)

　The characteristics of drum gear couplings (compared with straight gear couplings): As a transmission device, drum gear couplings evolved from the development of ordinary straight gear couplings. Drum-shaped gear couplings have various standards and series products in many advanced industrial countries abroad. They are composed of two drum-shaped outer gear sleeves and a pair of straight-tooth inner gear rings.The torque is transmitted by the meshing of the inner and outer teeth, and the axis of the inner ring gear of the straight teeth of the drum-shaped outer gear sleeve is oscillated (called angular displacement) to compensate for the relative deviation of the two transmission axes.The greater the bulge in the tooth length direction, the greater the angular displacement, up to 6°, generally recommended 1°～1.5°, while the old gear coupling only allows 0.5°; from the perspective of bending strength and load-bearing capacity , Under the same working conditions, the transmission torque of the drum-shaped gear coupling can be increased by 15-20%.The bulge in the tooth length direction makes the tooth pair contact better. Therefore, the drum gear coupling has the advantages of large transmission capacity, large angular displacement, stable transmission, high efficiency and long life.Therefore, straight gear couplings are gradually replaced, and are widely used in metallurgical machinery, heavy-duty, mining machinery, lifting, transportation machinery and other transmissions.
The high-torque drum-shaped gear coupling has good impact bearing performance, but the tooth surface contact stress and tooth root bending fatigue strength require high requirements. If we adopt special structure, special materials, and special processes, then the coupling can meet the requirements of large Requirements for diameter pipe rolling mills.With the development of China’s economy, the demand for large-diameter pipe rolling mills has increased, and the requirements for couplings used in the main drive have also become higher. Couplings that meet this requirement include cross universal couplings and large-torque drums. Gear couplings, of which the torque of the cross universal coupling can be reached, but the impact bearing performance is poor and the life is short, which is a big disadvantage; the current standard couplings used in domestic rolling mills cannot meet the requirements. It can only reach 1/2 to 1/3 of the required transfer torque, and professional foreign coupling manufacturers can meet the requirements. However, due to its special technology and the difficulty of manufacturing, the price is particularly expensive.A pipe rolling mill requires about 10 sets, and the cost of outsourcing spare parts is very high. The various drum gear couplings developed by XINLAN Coupling Factory according to customer needs have been able to meet the needs of various domestic manufacturers.The drum gear coupling is a rigid-flexible coupling. The gear coupling is composed of an internal gear ring with the same number of teeth and a 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 tooth 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.It has the ability to compensate for axis deviation in 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 conditions, such as Metallurgy, mining, lifting and transportation industries, and also suitable for shaft transmission of various machinery such as petroleum, chemical industry, general machinery, etc.
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 for 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. .

Basic parameters and main dimensions of GICLZ type-drum gear coupling