Fracturing pump for oil and gas well construction operation

The utility model discloses a fracturing pump for oil and gas well construction operation, belongs to the technical field of petroleum and natural gas machinery, and aims to solve various problems caused by centralized fracturing pump operation when load is increased. The fracturing pump comprises a power end, a lubricating system, a fluid end and a suction manifold, a crankshaft assembly of the power end comprises crankshafts arranged in grouped large gears, the large gears are composed of hubs and gear rings, and steps are arranged in the gear rings; the connecting rod assembly further comprises a connecting rod, a crosshead and an intermediate rod which are sequentially connected, an anti-loosening plate is arranged at the end, close to the intermediate rod, of the crosshead, and the end face of the anti-loosening plate is connected with the end face of the intermediate rod. According to the utility model, various problems caused by centralized fracturing pumps during operation with increased load are solv