For the problems that existing directional drilling rig with a large width could not drill crossing belt borehole in conventional roadway and could not use in the drilling-excavating alternately construction. a smaller crawler directional drill rig with width only 0. 95 meter is developed. The paper introduces the research on miniaturized tracked directional drill rig platform and its... https://fitnessgravesyardes.shop/product-category/selector-pin/