Clamp structure with function of maintaining mining mechanical parts

The utility model discloses a fixture structure with the function of maintaining mining mechanical parts, which comprises a workbench, a fixed block, a first motor, a screw rod, a clamping block, a processing piece and a positioning device, the processing piece is rightwards embedded between two movable groups, in the entering process, a clamping plate is pushed to extrude a spring, so that the clamping plate moves outwards along a support frame, and the positioning device is used for positioning the processing piece. Under the springback action of springs, a clamping plate is pushed to rebound to clamp a machined part, the machined part is preliminarily fixed, and under the condition that the common acting force of the two springs is the same, the center point of the machined part is located at the longitudinal center point of the workbench, and a second motor is started to drive a double-tooth lead screw to rotate; and a first pushing plate and a second pushing plate which are in threaded connection with th