Novel mechanical locking hydraulic oil cylinder for environmental sanitation equipment

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a novel mechanical locking hydraulic oil cylinder for environmental sanitation equipment. According to the technical scheme, the hydraulic cylinder comprises a cylinder body, a conical lock seat and a piston, a fixing sleeve is fixedly installed on one side of the exterior of the cylinder body, a first cylinder cover is clamped to one end of the cylinder body, a main rod movably penetrates through the interior of the first cylinder cover, the piston is fixedly installed at the other end of the main rod, the piston is sleeved with a high manganese steel abrasion-resistant sleeve, and a second cylinder cover is clamped to the other end of the cylinder body; an auxiliary rod is movably installed in the second cylinder cover in a penetrating mode, a conical lock seat is fixedly installed at the other end of the auxiliary rod, and the conical lock seat is sleeved with a limiting ring. Through the combination of various st