The structure of the piston and the piston rod mainly includes the connection structure of the piston and the piston rod, the connection structure of the end of the piston rod, the sealing structure between the piston and the piston rod and the cylinder. The connection structure between the piston and the piston rod. The connection structure between the piston and the piston rod can be divided into an integral type and a assembled type, and the assembled type has a thread connection, a half ring connection, a bullet ring connection and a cone pin connection. Hydraulic cylinder Under normal working conditions, the piston and the piston rod are threaded. However, when the working pressure is high or the load is large and the diameter of the piston rod is small, the thread of the piston rod may be overloaded. In addition, when the vibration of the working machine is large, the nut of the fixed piston may vibrate, so a non-threaded connection is required.
The main structure and end connection structure of the piston rod. The main body structure of the piston rod is solid and hollow. The solid piston rod is used when the rod diameter is small. When the rod diameter is large, the piston rod is made hollow in order to reduce the heavy weight. The hollow piston rod has air holes at one end to allow hot gas to escape during welding and heat treatment.
The connection structure between the end of the piston rod and the working machine is according to different usage requirements. There are mainly the following forms: welded single earrings, integral single earrings, smooth end, double earrings, ball head, external thread connection, internal thread connection.www.xhychromerod.com