Drum gear couplings are a type of flexible coupling with unique design and excellent performance. Here are some key points about them:

Structure and Principle

Component Composition: Drum gear couplings are mainly composed of a hub with crowned spur gear teeth, a flanged housing with internal gear teeth, a load - carrying ring with an outer sphere, end - covers, seals, etc. The outer teeth of the drum gear are spherical, with the center of the sphere on the gear axis.

Working Principle: They transmit torque through the meshing of the outer - toothed hub and the inner - toothed housing. The spherical outer teeth allow for a certain amount of angular, radial, and axial displacement, which can effectively avoid edge stress concentration at tooth meshing.

Performance Characteristics

High Torque Transmission: In the case of the same inner - tooth sleeve outer diameter and coupling maximum outer diameter, the load - carrying capacity of drum gear couplings is 15 - 20% higher than that of straight - tooth couplings on average, which can meet the needs of low - speed and heavy - load working conditions.

Large - angle Displacement Compensation: When the radial displacement is zero, the allowable angular displacement of straight - tooth couplings is 1°, while that of drum gear couplings is 1°30′, which is 50% higher.

Good Wear - resistance: The drum - shaped tooth surface improves the contact conditions between the inner and outer teeth, reduces tooth surface friction and wear, lowers noise, and extends the maintenance cycle.

High - efficiency Transmission: The transmission efficiency of drum gear couplings can reach 99.7%, with low energy consumption.

Model Types

There are many types of drum gear couplings, such as GICL, GICLZ, GIICL, GIICLZ, GCLD, WGP, WGC, WGZ, WGT, TGL, NGCL, etc. Different models have different characteristics and application scenarios. For example, the GICL - type drum gear coupling is suitable for connecting two co - axial shafts horizontally and with a certain angular displacement, and the transmission nominal torque is 0.8 - 3200KN·m.

Application Fields

Drum gear couplings are widely used in various industrial fields, especially in low - speed and heavy - load working conditions, such as metallurgy, mining, and lifting transportation industries. They can also be used in the shaft - system transmissions of various mechanical equipment in the petroleum, chemical, and general machinery industries.