Universal coupling actual working environment and common types

Universal coupling in practical applications according to the size of the torque transmitted can be divided into heavy, medium, small and light, medium and light universal coupling is often used in automobiles, machine tools and other vehicles and light industrial machinery. Small universal couplings are mainly used to transmit motion and are generally used for precision machinery and control mechanisms. When the radial displacement is large, the slider coupling can be selected, and the universal coupling can be selected for the connection of the angular displacement is large or intersecting two axes. When the two axes produce a large additional relative displacement during the working process, the flexible coupling should be selected.

For high-speed transmission shafts, couplings with high balance accuracy should be selected, such as diaphragm couplings, etc., rather than sliding block couplings with eccentricity. The size and nature of the torque required to be transmitted and the requirements for the damping function. For high-power and heavy-duty transmission, the gear coupling can be selected; For the transmission of severe impact loads or requiring the elimination of torsional vibration of shafting, couplings with high elasticity such as tire couplings can be selected. The working speed of the coupling and the centrifugal force caused by the size.

For high-speed transmission shafts, couplings with high balance accuracy, such as diaphragm couplings, should be selected, rather than sliding block couplings with eccentricity. The size and direction of the relative displacement of the two axes, when the installation is adjusted, it is difficult to keep the two axes strictly in alignment, or the two axes will produce a large additional relative displacement during the working process, the flexible coupling should be selected. When the radial displacement is large, the slider coupling can be selected, and the universal coupling can be selected for the connection of the angular displacement is large or intersecting two axes.

Coupling reliability and working environment, usually made of metal components without lubrication coupling is more reliable; The performance of couplings requiring lubrication is easily affected by the degree of lubrication perfection and may pollute the environment. Couplings containing non-metallic components such as rubber are more sensitive to temperature, corrosive media and strong light, and are easy to age. The coupling is not allowed to have more than the specified axis line skew and radial displacement, so as not to affect its transmission performance. After the universal coupling is installed, the normal operation of a shift, must check all fastening screws, if found loose, must be tightened again with the specified tightening torque, so repeated several shifts to ensure that it will not loose. If the universal coupling works under high temperature conditions, it must be refueled once a week. When refueling, unscrew the oil hole of the bearing end face and inject it with a high pressure oil gun until it overflows.