Short rzeppa synchronous universal coupling

Abstract

The invention provides a short rzeppa synchronous universal coupling, which is mainly used for the power transmission with short distance, small inclination angle and high rotating speed in the metallurgical, heavy-duty, mining, lifting, transportation machinery and other industries. The coupling consists of two all-sealed rzeppa universal joints which mesh with each other through two outer ringsprovided with teeth on the end surfaces and are fastened through a bolt, wherein an inner hole of an inner ring is a spline or keyway hole and is matched with corresponding shaft extension to achive the transmission of a driving/driven end; a steel ball is arranged between the inner ring and the outer rings; the steel ball is arranged in a window of a cage; the cage is embedded between the inner ring and the outer rings; a link bolt does not bear shear force formed by torque transmission ; and torque is transmitted to the driven end through an inner-ring channel of the driving end, the steel ball and an outer-ring channel. The coupling has the advantages of constant-speed transmission, smooth operation, compact structure, high bearing capacity, great angular compensation (generally up to 5degrees), strong adaptability to field work, convenient installation and adjustment, improvement on internal friction and wear, longer life span and capability of effectively preventing vibration from causing bolts to loosen.

Description

Technical field [0001] The invention relates to a short spherical cage synchronous universal joint in the field of mechanical transmission. Background technique [0002] Universal couplings commonly used in modern industry mainly include cross shaft universal couplings, drum gear couplings, ball cage synchronous universal couplings and other types. Commonly used short universal joints are mainly drum-shaped gear couplings, which can allow the distance between two shafts to be arranged very short, and are widely used in transmission systems; ball cage synchronous universal joints Due to its good synchronization and large working angle, the application of the device in China has developed rapidly in the past two decades. The following takes the crown gear coupling as an example to illustrate the problems and deficiencies in its application. figure 1 It is a schematic diagram of the structure of the drum-shaped gear coupling, which is developed and evolved from the ordinary s...

AI Technical Summary

Problems solved by technology

The drum gear coupling has the advantages of compact structure, high load-carrying capacity, and small moment of inertia, but the angular compensation is small, generally not more than 1.5°, which requires high installation accuracy and rigidity of the transmission system, and difficult installation and adjustment. It is easy to cause tooth surface wear and damage when used in a large environment, and the connecting bolts are also easy to loosen during use, which increases the cost of maintenance and use

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