Mechanical external oxygen lance anti-falling device

Abstract

The invention discloses a mechanical external oxygen lance anti-falling device. The device comprises a pulley block, device bases, a spring set, anti-falling hooks, an outer frame and an oxygen lancetrolley, anti-falling supports are arranged in the outer frame, the top end of the oxygen lance trolley is fixedly connected with the outer frame through a steel wire rope, and the spring set is arranged at the bottom end of the pulley block; and the device bases are arranged on the two sides of the pulley block and the two sides of the spring set, first pin shafts are movably installed on the device bases, the device bases are movably connected with the anti-falling hooks through the first pin shafts, second pin shafts are arranged on the anti-falling hooks, and the anti-falling hooks are installed on the oxygen lance trolley through the second pin shafts in a limited mode. According to the device, by adopting an internal and external combination mode, the anti-falling hooks are arrangedinside the frame during working, a supporting support is arranged outside a stand column of the oxygen lance frame, and the two do not intersect with each other; and once the steel wire rope is broken, the anti-falling hooks rotate along with the pulley and then are opened and extend out to be in contact with the anti-falling supports outside the stand column, and the purpose of preventing the oxygen lance from falling is achieved.

Description

technical field [0001] The invention relates to the technical field of converter steelmaking, in particular to a mechanical external oxygen lance fall prevention device. Background technique [0002] In the converter steelmaking process, the position of the oxygen lance in the converter and its rise or fall are one of the factors that determine the smelting quality and reduce consumption. During the smelting process of the converter, the oxygen lance needs to frequently enter the converter furnace to smelt molten iron. The transmission mechanism that drives the oxygen lance up or down is difficult to avoid failure due to long-term up and down operation, especially the steel wire rope directly connected to the oxygen lance. It is easy to break when it is operated in a long-term high-temperature environment. After the wire rope breaks, the falling oxygen lance is immersed in the molten steel, which is very easy to be damaged, causing the high-pressure water in the lance to le...

AI Technical Summary

Problems solved by technology

Secondly, the original oxygen lance fall prevention device was basically damaged after the oxygen lance fall accident, and it was extremely difficult to repair

[0007] To sum up, the disadvantages of the existing oxygen lance anti-falling device are mainly as follows: it is difficult to monitor, and the rail may be stuck when it is not braked; If the movement is successful, it may be difficult to remove because the clamping rail is too tight

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