Assembling method of hydraulic cylinder sealing element and piston rod specially used for iron-making blast furnace

Abstract

The invention discloses an assembling method of a hydraulic cylinder sealing element and a piston rod specially used for an iron-making blast furnace, comprising the following step: a, installing the sealing piece on a front cylinder seat of a hydraulic cylinder; b, adopting a taper sleeve piece, sheathing the taper sleeve piece at the outer end of the piston rod, leading a small-diameter sectionof an external thread of the outer end of the piston rod to be screwed on an internal screw of the small-diameter end of the taper sleeve piece, and leading a large-diameter end of the taper sleeve piece to be directly butted with a step position of the outer end of the piston rod so as to form smooth transition; c, leading the small-diameter end of the taper sleeve of the piston rod to be inserted into a piston hole on the front cylinder along the axial direction; and d, arranging a pair of bolts on a connecting flange disc of a cylinder body and the front cylinder seat along the diameter, simultaneously screwing the bolts, further forcing the taper sleeve piece of the outer end of the piston rod to pass through the piston hole on the front cylinder seat to be out of the sealing piece, taking down the taper sleeve piece, and then finishing assembly. The method adopted for assembly has the advantages of convenient installation and no damage on the sealing piece, greatly improves the assembling quality and installation efficiency and ensures normal working of the hydraulic cylinder.

Description

technical field [0001] The invention relates to an assembly method of a special hydraulic cylinder seal and a piston rod for an ironmaking blast furnace. Background technique [0002] There is an existing rotary hydraulic cylinder for a blast furnace front opening machine in an ironworks. The structure of the hydraulic cylinder is generally connected by a front cylinder base, a cylinder body, and a rear cylinder base. The front cylinder base is twitchably connected with a piston rod, and the outer end of the piston rod outside the hydraulic cylinder has a small diameter The threaded section is used for threaded connection with the cylinder head of the hydraulic cylinder. When installing, first connect the rear cylinder base with the cylinder body, then place the inner end of the piston rod on the cylinder body, then pass the outer end of the piston rod out of the front cylinder base, and then put the front cylinder base, cylinder body It is integrated with the rear cylinde...

AI Technical Summary

Problems solved by technology

When installed in this way, since the sealing ring must move on the piston rod, it is difficult to balance the force, so it also has the defect of easily causing damage to the inner lip of the sealing ring. At the same time, because the seal moves slowly on the piston rod, it is also Has the disadvantage of taking a long time to install

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