Using an auxiliary creep drive to move a conveyor when the main drive is not used.
Ogura tooth clutches, MZ or MZS Series.
Will depend upon torque requirements.
Description of Operation
The majority of the time, the main motor through the main reducer drives a conveyor system; however, in conditions where the system may be on an extended shut-down, they would want the auxiliary (pony) drive to take over and slowly rotate the system to provide proper lubrication to all the system components. When this is required, the electric clutch is engaged and the motor is turned on and the gear drive rotates the entire system at a slow speed.
Reason for Selection of the Ogura Tooth Clutch
The tooth clutch isable to transmit extremely high torque in a small space. Since this clutch is only engaged in a static condition and is required to transmit high torque, it is the best choice for this application. Other clutches could be used, but to transmit the same amount of torque, they would be at a much larger diameter. Because of the high ration on the auxiliary drive, some type of clutch has to be used. In some instances, over running clutches are used in this type of application; however, the Ogura tooth clutch provides bi-directional operation and can be disengaged in emergencies, whereas an over running clutch cannot.
Besides conveyors, there are also large Kiln drives that use creep drives and other systems like Ball Mills and turbine starting devices use devices similar to this. Many creep drives for conveyor systems are found in large manufacturing plants or bakeries that require the drives to continue running to get proper lubrication because of the high temperatures.