Quickly replace the cylinder rod of the bending cylinder and the operation method of the gland seal

Abstract

The invention discloses an operation method for rapid sealing replacement of roll bending cylinder rods and glands, and belongs to the technical field of rolling mill equipment overhauling methods. The second roll bending cylinder rod which is on the same moving block with the first roll bending cylinder rod is pressed back through a first jack by using the oil circuit intercommunication principle, and when the first roll bending cylinder rod needing to be replaced is jacked up outwards through internal hydraulic oil until the gland is disconnected from the moving block, a seal at the corresponding gland is disassembled, replaced and assembled. If both the roll bending cylinder rods and gland seals need to be replaced, after the first jack enables the second roll bending cylinder rod to be fully pressed in, any one of roll bending cylinder rods which are in oil circuit intercommunication on any one of moving blocks are pressed in through a second jack until the first roll bending cylinder rod needing to be replaced is completely jacked out, then tools are utilized to move the first roll bending cylinder rod out, and installation is carried out until external assembly is finished. The operation method is safe and reliable, the sealing replacement time of the roll bending cylinder rods and the glands is shortened, the overhauling efficiency and overhauling quality are improved, and the operating rate of a rolling mill is improved.

Description

technical field [0001] The invention belongs to the technical field of rolling mill equipment maintenance methods. Background technique [0002] The roll bending cylinder is an important part of the rolling mill. The roll bending cylinder of each rolling mill bends the roll body through hydraulic pressure to control the crown and flatness of the strip. It has become an indispensable equipment on the rolling mill. With the acceleration of production rhythm, the degree of wear of the bending cylinder is also increasing, so the cylinder rod and gland of the bending cylinder need to be replaced regularly. In the previous inspection and replacement of the cylinder rod of the bending cylinder, it was difficult to take it out because the cylinder rod of the bending cylinder was inside the moving block. The traditional "hydraulic method" and "welding method" not only waste excessive hydraulic oil and pose potential safety hazards, but also have complicated procedures, which cannot ...

AI Technical Summary

Problems solved by technology

In the previous work of overhauling and replacing the cylinder rod of the bending cylinder, it was difficult to take it out because the cylinder rod of the bending cylinder was inside the moving block

The traditional "hydraulic method" and "welding method" will not only waste excessive hydraulic oil and have potential safety hazards, but also have complicated procedures, which cannot be handled at all after short-term parking, seriously affecting the production rhythm, and necessary improvements are urgently needed

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