Double-chain type power take-off transfer case

A power takeoff shell and a transfer case shell are of an integrated structure, a power takeoff shaft, an input shaft and a transmission mechanism between the power takeoff shaft and the input shaft are all located in the integrated structure, the integration is good, the overall layout is compact, and the space utilization rate is high. The main structure of the power divider comprises a power divider shell, an input shaft, a front output shaft, a rear output shaft, a speed reduction planetary gear train, an HL gear shifting fork, an HL gear shifting gear sleeve, a four-wheel-drive linkage gear, a two-four-wheel-drive combination sleeve, a two-four-wheel-drive gear shifting fork, a gear shifting guide shaft and a power takeoff. The power takeoff comprises a power takeoff shell, a power takeoff shaft, a power takeoff linkage gear, a power takeoff combination sleeve, a power takeoff guide shaft and a power takeoff shifting fork. The two-four-drive combination sleeve is in linkage with the front output shaft th