Performance testing device for piston rod sealing assembly

A performance testing device for a piston rod sealing assembly, comprising a bracket, a support apparatus, a drive apparatus, and a leakage detection apparatus, and a balance apparatus, wherein the support apparatus comprises a cylinder body, the cylinder body is internally provided with a channel inside the cylinder body, and the channel inside the cylinder body is configured to allow a piston rod equipped with a sealing component to pass therethrough;

• the drive apparatus is provided on the bracket, and the drive apparatus is configured to be connected with the piston rod and drive the piston rod to reciprocate along an axis of the channel inside the cylinder body;
• the leakage detection apparatus comprises a limit member and an oil receiver, the limit member is provided with a detection channel and an oil channel, the limit member is connected to the cylinder body, the detection channel is communicated with the channel inside the cylinder body, and a diameter of the detection channel is smaller than a diameter of the channel inside the cylinder body, the detection channel is configured to allow the piston rod to pass therethrough;
• one end of the oil channel is communicated with the detection channel, and the other end thereof is communicated with the oil receiver;
• wherein the drive apparatus comprises a driving motor, a first rotating wheel, a first connecting rod, a first supporting seat, and a first guiding shaft, and the balance apparatus comprises a second rotating wheel, a second connecting rod, a second guiding shaft, a counterweight block, and a synchronous belt;
• wherein the first guiding shaft and the second guiding shaft are located on opposite sides of the synchronous belt and parallel to each other, the first guiding shaft is provided at one end of the first connecting rod away from the driving motor, while the second guiding shaft is provided at one end of the second connecting rod close to the driving motor, so that when the performance testing device for a piston rod sealing assembly operates, the first guiding shaft and the second guiding shaft move in opposite directions.