Radial plunger hydraulic motor and hydraulic system thereof

The utility model relates to a radial plunger hydraulic motor which comprises a shell, an end cover, a crankshaft and an odd number of plunger sleeve-plunger assemblies, plungers in the multiple plunger sleeve-plunger assemblies can slide in oil cavities of corresponding plunger sleeves in the radial direction of the crankshaft, oil ports communicated with the oil cavities are formed in the plunger sleeves, and the oil ports are communicated with the oil cavities. A plurality of oil passages matched with the plunger sleeve-plunger assemblies in number are arranged in the end cover, the upper port of each oil passage is communicated with the oil port of the corresponding plunger sleeve, a pump head body is further fixed on the end cover, a plurality of oil passages with the same number as the plunger sleeve-plunger assemblies are arranged in the pump head body, and the oil passages are communicated with the oil ports of the plunger sleeve. The inner port of each oil way is connected with the lower port of the