Mine underground drill borer

The utility model discloses a mine underground drill borer comprising an upper clamp plate, a lower clamp plate and a support provided with a round hole. The upper clamp plate and the lower clamp plate are stacked together. The support is provided with a round hole. Each clamp plate is a rectangular steel plate provided with an elongated hole. One end of one rectangular steel plate is provided with a bent portion, the other rectangular steel plate is inserted into the bent portion; after insertion, the two rectangular steel plates are tied together through a spring. One end of each rectangular steel plate is symmetrically provided with a handle and a hook plate facing up. The support is clamped between the hook plates. The center of circle of the round hole of the support and the centers of circle of the elongated hoses of the steel plates are collinear; after a drill rod penetrates the elongated holes and the round hole, the spring elastically drives the elongated holes of the rectangular steel plates to relatively move to clamp the drill rod, and the support contracts to deform the round hole to clamp the head of the drill rod, and the position and direction of the drill rod is locked. The mine underground drill borer has the advantages that the problem that two forces provided by an operator result in force dispersion and drill rod angle deflection in the traditional boring process is avoided and boring accuracy is improved.