Dynamic system of excavating loader

The utility model relates to a dynamic system of an excavating loader, which aims mainly to solve the problem that an existing excavating loader is unable to perform construction in a relatively low tunnel because the complete equipment is relatively high. The dynamic system of the excavating loader is characterized in that a motor (4) and an oil pump (9) are fixed on a rack (5) which is fixed in the middle position of a body (1) at a rear end of a walking part (10) of a crawler belt and is located below a transporting mechanism (11). Because the dynamic system is installed at the middle position of the body at the rear end of the walking part of the crawler belt via the rack and is located below the transporting mechanism, the whole set of the excavating loader is greatly lower in elevation and is particularly applicable for emergency rescue work in relatively low tunnel.