Piston rod and cross head semi hydraulic connection

Piston rod and cross head semi hydraulic connection

Pressure in the semi hydraulic connection is our company's proprietary advanced technology, traditional hydraulic connection is through the injection of highpressure oil (1500 bar) to the pressure in the annular inner cavity of the piston, forcing the piston rod (or the connecting rod bolts) joints in the elastic range compression elongation, let nut close with a small torque and then discharged highpressure oil, avoid in the fastening nuts on the thread damage, threaded part of the uniform stress, but the connection methods have some defects, rubber ring of pressure in the process of using long time aging, oil pressure not hit up, pressure disassembled not.

Semi hydraulic joint has the advantages of simple structure, convenient fastening and disassembly; saves time and effort, save the highpressure hydraulic booster pump; the strict control of the piston rod pre tightening force, will not cause the piston rod is more than reasonable elastic deformation; preload in place, does not produce stress concentration, to prevent the piston rod fracture; to solve the problem of hydraulic structure after longterm use can not disassemble the, reasonable avoid material waste caused by the hydraulic structure and the cause of the security hidden danger.

Schematic diagram of the cross head and half hydraulic connection