Three-grabbing type clamping mechanism for engine box body production

The utility model discloses a three-grabbing type clamping mechanism for producing an engine box body. The three-grabbing type clamping mechanism comprises a supporting plate. Three sets of pneumatic push rods are fixedly installed at the bottom end of the supporting plate at equal intervals, clamping blocks are rotationally installed at the positions, corresponding to the pneumatic push rods, of the surface of the supporting plate, a protective shell is fixedly installed at one end of each clamping block, and a positioning block is fixedly installed on the surface of the supporting plate. The structure of the protective shell, the wear-resistant block and the locking block is adopted, damage to the surface of the engine box body is avoided, the protective shell is arranged at one end of the extrusion block in a sleeving mode and then is fixedly installed through the locking block, and meanwhile contact extrusion is conducted through the wear-resistant block when the surface of the engine box body is extruded