Main guide rail for tunneling drill jumbo

The main guide rail for the tunneling drill jumbo comprises a framework part and a cover plate part, the whole framework part is in a rectangular frame shape, and a first installation groove, a second installation groove, a third installation groove and a fourth installation groove which are formed in a sunken mode are formed in the four side faces of the framework part in the length direction respectively. The first installation groove, the second installation groove, the third installation groove and the fourth installation groove are all trapezoids with the groove top width larger than the groove bottom width, and the cover plate part comprises a first cover plate matched with the first installation groove in shape and arranged on the first installation groove in a covering mode. Compared with the prior art, the main guide rail for the tunneling drill jumbo is easy to form, low in cost, high in strength, light in weight and good in straightness, the structural form meets the installation requirements of al