The invention discloses a novel variable-damping
hydraulic cylinder. The novel variable-damping
hydraulic cylinder comprises a cylinder body, a
piston rod movably connected with the cylinder body anda
piston body arranged in the cylinder body, the
piston body comprises a fixing piston, a first piston and a second piston, the first piston and the second piston are arranged on the two sides of thefixing piston separately, the first piston and the fixing piston are each provided with a matching hole slidably connected with the
piston rod, the second piston is fixedly connected with the end of the
piston rod, a first cavity is formed by the first piston and the fixing piston, a second cavity is formed by the second piston and the fixing piston, the first piston and the second piston are connected with a first elastic part and a second elastic part which are arranged at the two ends of the cylinder body respectively, the first cavity communicates with the second cavity through an oil waychannel formed in the fixing piston, and an adjusting mechanism capable of adjusting the guiding port
diameter is arranged in the oil way channel. According to the novel variable-damping
hydraulic cylinder, the structure is simple,
piston rod extension and contraction two-way damping adjusting can be achieved, and then the speed of knee joints in the swinging period and the stability of the knee joints in the supporting period can be adjusted.