High-precision transmission shaft for heavy truck

The high-precision transmission shaft for the heavy truck comprises a lengthened transmission shaft and a front welding fork, a transmission shaft pipe is arranged outside the lengthened transmission shaft, a tooth groove sleeve is arranged inside the transmission shaft pipe and fixedly connected with the transmission shaft pipe, a tooth-shaped shaft is installed at the end, close to the transmission shaft pipe, of the lengthened transmission shaft, and the tooth-shaped shaft is fixedly connected with the front welding fork. And one end of the tooth-shaped shaft extends into the tooth groove sleeve and the transmission shaft pipe, the tooth-shaped shaft is in sliding connection with the tooth groove sleeve, three sets of sliding groove holes are formed in the transmission shaft pipe at equal intervals, and the sliding groove holes all penetrate through the outer portion of the transmission shaft pipe. According to the high-precision transmission shaft, the high-precision transmission shaft can be conveniently