Combined pin shaft convenient to disassemble and assemble

The utility model relates to the technical field of pin shafts, in particular to a combined pin shaft convenient to disassemble and assemble, which comprises a pin shaft, a pin cap is spirally connected to the left end face of the pin shaft, a reinforcing plate is slidably connected to the middle of the outer side of the pin cap, clamping blocks are fixedly connected to the upper side and the lower side of the right end of the reinforcing plate, and the clamping blocks penetrate through the pin cap. The left end of the inner side of the pin shaft is fixedly connected with an oil cavity, the middle of the inner side of the pin shaft is slidably connected with a sliding plate, and the sliding plate penetrates through the pin shaft. The oil cavity, the push rod, the rotating plate and the limiting block are arranged, and the pin cap is rotated, so that the pin cap and the limiting rod are separated from the pin shaft and the rotating plate; the rotating plate is pressed rightwards, the sliding plate pushes the m