Novel clamping box

The utility model discloses a novel clamping box which comprises a cotyledon, a mother blade is arranged on one side of the cotyledon, a hinge rod is arranged between the cotyledon and the mother blade in a penetrating mode, a lubricating box is arranged at the top of the hinge rod and fixed to the joint of the cotyledon and the mother blade, a rebound chamber is formed in the upper side of the interior of the lubricating box, and an oil box is arranged at the bottom of the inner side of the lubricating box. A pulling and pressing rod penetrates through the middle of the lubricating box and is located in the rebound chamber and the oil box, a pressing plate is arranged on the top face of the end, located in the oil box, of the pulling and pressing rod, a sponge block is arranged in the oil box, the bottom face of the pressing plate is attached to the surface of the sponge block, and an oil outlet piece is arranged on the bottom face of the lubricating box and attached to the bottom face of the sponge block; a