I do not know if you are also very interested in its structure in the process of using the hydraulic cylinder? In fact, its structure is not very complicated, but if you encounter problems in the process of use, you still have to figure it out. The following is an introduction to the connection between the piston and the cylinder in the hydraulic cylinder.
1, the hydraulic cylinder in the piston and cylinder connected to the beam in three forms, that is, a rigid connection, the double spherical bearing and spherical rod connection. In low-light plungers, rigorously connected to eccentric loads, the plunger accompanies the beam to tilt, and a bunch of eccentric torque in the strut is part of the guide to work, so the guide sheath is thrust in transverse horizontal or a couple, and the sheath is aggravated by wear on the seals. Three-cylinder single-cylinder four-column hydraulic press and hydraulic cylinder construction, plunger and 44/DDC beam hole.
2. The ball bearing plunger is connected to the beam seat. Convex spherical tee, which can be moved in the horizontal direction. When the eccentric beam forging effect of the eccentric torque, at this point, if lubricated ball, ball pair can be relative axial movement by the pressure piston, and only the friction torque, remain vertical, so that the side thrust greatly reduces the plunger, improve the piston wear of the guide cylinder, seal.
In the common connection forms of multi-cylinder and 3-cylinder hydraulic cylinders, the sphere radius is usually 1.5 to 2 times the diameter of the plunger, and the ball should be taken care to maintain good lubrication. Some hydraulic cylinders, the unit pressure between the ball faces is too large, and even the rust and viscosity lubrication conditions are poor, often less than the role of the ball and socket joint.
3, the hydraulic cylinder double spherical valve stem is connected to the table, for large hydraulic cylinders, the bearing ball is between the two ends of the middle rod, the top of the tee tube and the bottom of the pressure plunger rod through the center. The intermediate shaft can rotate the ball seat so that the vertical plunger, the minimum thrust edge seal has a long life, but the structure is more complex, the cost is high, and it is not easy to take the plunger diameter for hours. When the ball must be kept well lubricated, especially on the surface of the ball.
