Drum-shaped Gear Coupling

The Characteristics of the Drum-shaped Gear Coupling

(Compared with the straight gear coupling)

1. Bearing capacity is stronger. Under the same outer diameter of the inner gear sleeve and the outer diameter of the coupling, the bearing capacity of the drum-shaped gear coupling is 15-20% higher than that of the straight gear coupling on average.

2. The drum-shaped gear coupling can allow larger angular displacement (compared to the straight gear coupling), and the contact condition of the teeth can improve the ability to transmit torque and prolong the service life. The state of contact along the tooth width with angular displacement. Since the angular compensation of the drum-shaped gear coupling is greater than that of the straight gear coupling, the drum-shaped gear coupling is widely used, and the straight gear coupling is an obsolete product, and the selector should try not to choose it.

The working range of the gear coupling: the gear coupling is composed of an inner ring gear with the same number of teeth and a flange half coupling with outer teeth. External teeth are divided into two types: straight teeth and drum-shaped teeth. The so-called drum-shaped teeth are made of spherical surfaces. The center of the spherical surface is on the gear axis, and the tooth side clearance is larger than that of ordinary gears. When the gear coupling is working, the two shafts produce relative angular displacement, and the tooth surfaces of the inner and outer 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 needs to be in good condition and Work in a sealed state. The gear coupling has a small radial size and a large load-carrying capacity. It is often used for shaft transmission under low-speed and heavy-load conditions, and the dynamically balanced gear coupling can be used for high-speed transmission, such as the shaft transmission of a gas turbine.