National standard drum gear coupling selection sample parameters GB

Introduction and structure of gear 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.

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 loss. Therefore, the gear coupling needs to be well lubricated And work in a sealed condition.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-shaped gear couplings is greater than that of straight-tooth couplings, drum-shaped gear couplings are widely used at home and abroad. Straight-tooth couplings are obsolete products, and those who choose should try not to use them. .The different forms of gear couplings that my country has formulated the machinery industry standards are all drum gear couplings, with the following structural forms:

GIGL type-wide basic type (JB/T 8854.3-2001)

GIICL type-narrow basic type (JB/T 8854.2-2001)

GSL type-telescopic type (JB/T10540-2005)

GICLZ type-wide type with intermediate type (JB/T8854.3-2001)

GIICLZ type-narrow type with middle type (JB/T8854.2-2001)

GCLD type-connecting motor shaft extension type (JB/T8854.1-2001)

WGP type-with brake disc type (JB/T7001-2007)

WGC type-vertical installation type (JB/T7002-2007)

WGZ type-with brake wheel type (JB/T7003-2007)

WGT type-connecting middle sleeve type (JB/T7004-2007)

NL type-nylon inner gear ring type (JB/T5514-2007)

WGJ type-connect with intermediate shaft type (JB/T8821-1998)

NGCL type-with brake wheel type (JB/ZQ4644-1997)

NGCLZ type-with brake wheel type (JB/ZQ4645-1997)

WG type-basic type (JB/ZQ4186-1997)