Multi-direction force loading device for rock and use method thereof

The invention provides a multi-direction force loading device for rock. The device is characterized by comprising a main frame, loading mechanisms and a pulling beam, wherein the main frame is mainlycomposed of a bottom bearing beam, an upper bearing beam and a middle frame, and all the parts are combined in a convex-concave groove inserting form and are connected and fixed through hinge pins, soas to form a hollow cubic structure; the loading mechanisms are respectively mounted on the inner wall of the rear side of the middle frame, on the inner wall of the left side of the middle frame andin the middle position of the lower part of the upper bearing beam; and the pulling beam is arranged in a square hole in the right side of the middle frame, the left side end of the pulling beam is in contact with a to be tested part, the right side end of the pulling beam is in contact with the inner wall of the right side of the middle frame, the rear part of the pulling beam is connected witha pulling mechanism, and the