Abstract: In a clamping lock for antiskid chains with a housing supporting an actuating lever which has a catch position in which a clamping rope which can be pulled through a housing opening into the housing for purposes of clamping can be locked against its clamping direction and has a release position in which the clamping rope can be released from this locking, the clamping rope is connected inside the housing to a winding device which is pretensioned in the wind-up direction.