Hydraulic oil cylinder convenient to replace and maintain

The hydraulic oil cylinder convenient to replace and maintain comprises an installation block, a replacement mechanism is arranged in the installation block, a cylinder body is arranged at the top of the replacement mechanism, a cylinder cover is fixedly connected to the top of the cylinder body, a cleaning mechanism is arranged on the front face of the cylinder cover, and the replacement mechanism comprises a working groove which is formed in the installation block. Inserting blocks are inserted into the working grooves, limiting openings are formed in the two sides of each inserting block, limiting blocks are inserted into the limiting openings, connecting shafts are fixedly connected to the front faces of the limiting blocks, and springs are fixedly connected to the sides, away from the limiting openings, of the limiting blocks. According to the utility model, through the arranged replacement mechanism, when the cylinder body needs to be replaced and maintained, a second rope and a first rope can respectiv