The present invention discloses a single-rod symmetrical
hydraulic cylinder with a rod end and a stepped buffer. The base and the rear end cover are fixedly connected, and the two sides of the base are respectively provided with oil ports A and T; the front and rear ends of the cylinder
barrel are respectively connected with the front end cover and the base, and the rear end of the front end cover is provided with an annular boss, which is connected to the inner side wall of the annular cylinder
barrel, and the front end cover is provided with an oil port B; the
piston rod can be slidably connected to the inner side wall of the outer shell, and the front end of the
piston rod passes through the front end cover; the oil
pipe in the cylinder is located inside the
piston rod and is fixedly connected to the outer shell, the
piston rod bracket is fixedly connected to the front end of the
piston rod, and a
hysteresis telescopic displacement sensor is provided at the rear end, and the
hysteresis telescopic displacement sensor is fixedly connected to the outer shell. The
hydraulic cylinder of the present invention requires a small installation space, and moves normally within the normal working
stroke. Once an emergency occurs and exceeds the normal working
stroke, it immediately enters the buffer state to avoid collision between the
piston rod and the front end cover.