Magnetic force operated hydraulic appts. for reciprocating mechanisms - has intermediate tube mounted inside cylinder and inner tube arranged inside intermediate tube for holding main cylinder and auxiliary cylinder set

摘要

The hydraulic appts. includes an upper coupling unit (4) and a lower coupling unit (5), for fixing an upper ring shaped positioning plate (20) and a lower ring shaped positioning plate (20) in the cylinder (3) at two opposite ends. A solenoid coil (8) is arranged between the ring shaped positioning plates (20) of the cylinder (3) and the intermediate tune. The appts. also has a non-return valve (91), a hydraulic oil pump (9) for pumping hydraulic oil through the solenoid coil (8) across a cooling coil (10), an oil capacity control unit and pressure control unit (80). A magnetic iron plate (70), a plunger rod (50), and a stabilising rod (60) are also provided. An air ventilating fan (30) cools the cooling coil (10). The solenoid coil (8) for operating the main piston (6) can be activated to apply pressure on the cylinder set (7), which exerts pressure on the hydraulic oil to drive the reciprocating mechanism alternately to and fro. ADVANTAGE - Takes up small space, consumes low power and during operation produces little noise.