Rock crushing device for petroleum geological survey

The utility model relates to the technical field of rock crushing, and discloses a rock crushing device for petroleum geological survey, which comprises a processing table, L-shaped blocks II are fixedly connected to the left side and the right side of the top end of the processing table, convex plates are fixedly connected to the inward sides of the L-shaped blocks II, electric telescopic rods II are fixedly connected to the inner sides of the convex plates, and electric telescopic rods II are fixedly connected to the inner sides of the electric telescopic rods II. The output end of the convex plate is fixedly connected with a moving plate, the front side and the rear side of the outer wall of the moving plate are both slidably connected with square sliding plates, and the top ends of the square sliding plates are rotatably connected with a first rotating plate. According to the rock crushing device, rocks are placed between the adjacent clamping plates, the convex plates are fixed by matching with the L-sha