Roller repair clamping device

The utility model discloses a roller repair clamping device, which relates to the field of clamping devices and comprises a three-jaw chuck, a positioning plate is fixedly sleeved on the three-jaw chuck, a support block is fixedly mounted on one side of the positioning plate, a motor is fixedly mounted on one side of the support block, and a linkage gear is fixedly mounted at the output end of the motor. And three limiting plates are fixedly mounted on one side of the positioning plate. Through the arrangement of the motor, the linkage ring, the positioning clamping jaws and other structures, the roller needs to be installed on the three-jaw chuck when needing to be repaired, the motor can be started firstly, the motor can drive the linkage ring to rotate, and the three positioning clamping jaws can be driven to be close to one another under the action of rotation of the linkage ring; after adjustment, the roller penetrates through the three positioning clamping jaws to be placed, the roller can be supported