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A method for replacing the trunnion bearing on the drive side under abnormal conditions in a steelmaking converter

A technology of trunnion bearings and steelmaking converters, which is applied in the manufacture of converters, metal processing equipment, metal processing, etc., can solve the problems of replacing the trunnion bearings on the transmission side, damage and failure of the trunnion bearings on the drive side of the converter, and achieve a short replacement period , the comprehensive effect is remarkable, the operability effect is strong

Active Publication Date: 2022-02-18
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for replacing the trunnion bearing on the transmission side of the steelmaking converter under abnormal conditions, which solves the problem that the trunnion bearing on the transmission side of the converter is suddenly damaged under abnormal conditions, and after production is forced to be interrupted, the conventional maintenance method cannot be safe and fast. and quality replacement drive side trunnion bearing issues

Method used

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  • A method for replacing the trunnion bearing on the drive side under abnormal conditions in a steelmaking converter

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Embodiment

[0031] A method for replacing the trunnion bearing on the drive side under abnormal conditions in a steelmaking converter, such as figure 1 At the bottom of the furnace, the jacking car 1 with a maximum lifting force of 1700kN is used as the first lifting device, and its main function is to lift the furnace shell and lining of the converter 2; the maximum lifting force is 2000kN. Equipment 2, jacking support ring 11 and suspended deceleration large gear 5; use the jacking car 1 and jacking cylinder 6 to work together to lift the trunnion bearing on the drive side of the support ring by 50mm, then disassemble the trunnion bearing 4 on the drive side, The non-side motion bearing 12 must not be lifted in the whole process, and the specific implementation method is as follows:

[0032] 1) Push the jacking car 1 to the bottom of the converter 2. The jacking car 1 includes a base, wheels arranged under the base and hydraulic cylinders arranged on the base, and the center of the hydr...

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Abstract

The invention discloses a method for replacing a transmission side trunnion bearing under abnormal conditions of a steelmaking converter, and belongs to the technical field of rapid repair of the tilting system of the steelmaking converter. Push the existing masonry furnace jacking trolley to the bottom of the converter. The jacking trolley is used as jacking equipment 1. Its main function is to lift the furnace shell and furnace lining. The temporarily installed jacking cylinder is used as jacking equipment 2. Its main function It is the jacking support ring and the deceleration large gear. Under the joint operation of the jacking car and the jacking cylinder, the trunnion bearing on the transmission side of the support ring is lifted by 50mm, and then the trunnion bearing on the transmission side is disassembled. The invention solves the problems of accidental damage of the drive side bearing of the converter during the production process, long normal maintenance period, and wasteful removal of the converter lining.

Description

technical field [0001] The invention relates to the technical field of rapid repair of a tilting system of a steelmaking converter, in particular to a method for replacing a transmission side trunnion bearing in an abnormal situation of a steelmaking converter. Background technique [0002] The trunnion bearing on the transmission side of the steelmaking converter is the main component of the converter tilting system. The service life of the trunnion bearing is generally 8-10 years, and its maintenance cycle is consistent with that of the converter support ring. Therefore, the replacement method of the trunnion bearing is usually: offline support ring After the overhaul is completed, the trunnion bearing and the transmission part are assembled according to the technical requirements, and then the support ring and the furnace shell are installed on the line. However, under abnormal circumstances, the trunnion bearing on the transmission side is suddenly damaged during the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P19/00C21C5/50
CPCB23P19/00C21C5/50
Inventor 韩小军陈瑜侯军
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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