Hydraulic cylinder locking mechanism

The utility model provides a hydraulic cylinder locking mechanism, and belongs to the technical field of hydraulic cylinder locking. The hydraulic cylinder locking mechanism comprises a cylinder body and a dismounting assembly, a shell is arranged on one side of the cylinder body, a piston body is slidably connected to the inner wall of the shell, a piston rod penetrating out of the cylinder body is arranged at one end of the piston body, the piston rod is clamped with the cylinder body, an oil inlet pipe is arranged at the bottom of the shell, and an oil outlet pipe is arranged at the bottom of the oil inlet pipe. The dismounting assembly comprises an inner pipe, an elastic piece, a first fastener, a second fastener and a plugging piece, the oil inlet pipe is connected to the inner pipe in a threaded and sleeved mode, cross rods are fixed to the two sides of the inner wall of the inner pipe, the bottom of the elastic piece is movably connected with the circular ring through the first fastener, and the bottom