Separated underground case for underground switch machine

The utility model relates to an underground switch machine, in particular to a separated underground case for the underground switch machine. The separated underground case for the underground switch machine is characterized by comprising bending plate components (1), underground case transverse plates (2), underground case vertical plates (3), separated cover plates (4) and a support column (5); the separated cover plates (4) are formed by jointing riffled plate blocks with the thickness of 10 mm; the bending plate components (1) are fixed on switch bed plates (6) on the two sides by bolts, the bending plate components (1) are shaped like a Chinese character 'ao', and openings are upward; the separated cover plates (4) form sealing openings on the bending plate components (1), the underground case transverse plates (2) and underground case vertical plates (3), and the bottoms of the separated cover plates (4) are connected with the bottoms of the bending plate components (1) through bolts. The separated underground case for the underground switch machine can simultaneously tolerate pedestrian treading and the rolling of motor vehicle wheels within the limited space, the underground switch machine can be effectively protected, and convenient maintenance can be achieved.