Ultrahigh-temperature roller crusher

The invention discloses an ultrahigh-temperature roller crusher which comprises a crushing unit, a shell assembly, transmission devices and a cooling system, the crushing unit is composed of at least two roller shaft assemblies, and the head end of a transmission shaft of each roller shaft assembly is connected with one transmission device; the cooling system comprises a roll shaft water cooling system used for providing water cooling protection for the roll shaft and a shell air cooling system used for providing cooling protection for the shell assembly. The interiors of the roller shaft and the driven shaft head are of hollow structures, and the roller shaft water cooling system is connected with the driven shaft head and extends into the roller shaft to cool the roller shaft in a water inlet and return mode; the interior of the shell assembly is of a communicated hollow structure, an air inlet and an air outlet of the shell assembly are arranged diagonally, and cooling air is fed into the shell air cooling