The invention discloses an oil pump rack assembly comprising an oil pump, a guide rod, a jetting pump, a pressure adjusting valve, a clamping ring, a pressure adjusting valve seat, a pipe fitting assembly, an oil pump support, an active-drive jetting pump and a sensor mounting seat. The oil pump and the guide rod are mounted on the oil pump support, the pressure adjusting valve is mounted in the pressure adjusting valve seat, the pressure adjusting valve seat and the pipe fitting assembly are fixedly connected with the oil pump support mounted on an oil barrel, the active-drive jetting pump is connected to one pipeline of the pipe fitting assembly in a sealed manner and is mounted in the oil barrel through a seal bowl, the sensor mounting seat is mounted on the oil barrel, and the bottom of the oil barrel is provided with a damping pad. According to the oil pump rack assembly, the sensor mounting seat is arranged on the oil barrel, the edge of the oil barrel can be lifted, and the volume of the oil barrel can be increased; the oil support integrates the oil pump, the pressure adjusting valve seat, the pipe fitting assembly and the jetting pump assembly, and assembly is facilitated; damping effect is improved, connections among components are more reliable and stable, and structure is more compact; and the system pressure can be more stable by the aid of the diaphragm type pressure adjusting valve.