APPARATUS FOR EXPANDING TUBES IN TUBE WALLS Russian patent published in 1998 - IPC

FIELD: manufacture of heat exchange equipment. SUBSTANCE: apparatus includes motor and planetary gearing. Shaft of carrier of said gearing serves as spindle. Crown wheel of said planetary gearing is mounted in reduction gear casing with possibility of rotation around its own axis and it is kinematically joined with spring-loaded movable member of relay, for example contact-type relay whose contacts are connected with signalling system or with system for automatic control of motor. EFFECT: restriction of output shaft torque by value set according to technological parameters of expansion process. 2 cl, 3 dwg