Method for replacing slewing bearing of ladle turret

Abstract

The invention relates to a method for replacing a slewing bearing of a ladle turret. The method comprises the following steps that 1, a steel plate is welded at each of four corners of the turret to be used as a jacking extension face (1), and a right-angle reinforcing rib plate (2) is welded on each extension working face; 2, four oil cylinder supporting seats are manufactured, the shape of a bottom plate of each supporting seat is the same as that of a supporting seat positioning plate, and the oil cylinder supporting seats can be conveniently installed on the positioning plates; 3, oil cylinders (13) are installed on each supporting seat, the oil cylinders are symmetrically arranged on the upper surfaces of the supporting seats, the centers of the oil cylinders are located in a box body structure, and the jacking height of the oil cylinders is 300 mm; and 4, bearing moving-out rails (21) and a rail support (22) are manufactured. According to the technical scheme, the jacking faces of the oil cylinders are extended, the structures of the supporting bases are optimized, the problem that the gap between the slewing bearing and the oil cylinder supporting seats is too small is well solved, and jacking of a slewing body of the turret can be safely and reliably completed by means of the scheme.

Description

technical field [0001] The invention relates to a replacement method, in particular to a method for replacing a rotary bearing of a ladle turret, and belongs to the technical field of the ladle turret of a continuous casting machine. Background technique [0002] Meishan Iron and Steel 3#, 4# continuous casting machine bale turntable is a butterfly-shaped dual-arm lifting turret, which is used to transport the bale from the receiving position to the casting position, and transport the empty bale back to the receiving position or from the casting position Accident location, and monitor the weight of bales. The rotary table is composed of a rotary body, a lifting arm, a saddle, an upper link, and a lifting hydraulic cylinder. Generally, there are three replacement methods for the bearings of the bale slewing table: 1. The method of lifting the balance beam as a whole; Although the first method is feasible, the manufacturing cost of the special balance beam is expensive, and ...

AI Technical Summary

Problems solved by technology

The 4 corners of the slewing body have sufficient strength and are good jacking surfaces, but since the length of the slewing body is only 500mm wider than the slewing bearing, the jack can only be arranged at the edge of the corner and the gap between the bearing and the jacking support seat is very small Small, high risk of jacking

In addition, the rotary table of 3#4# continuous casting machine adopts the pin brake method. The base of the rotary table has a boss with a height of 100mm, and there is a boss with a height of 150mm on the rotary table. Therefore, if the jacking scheme is adopted, the stroke must be at least 300mm The jack needs to be reasonably arranged to take out the height of the bearing to ensure that there is a sufficient safety distance between the bearing and the upper and lower bosses, which undoubtedly increases the difficulty of jacking

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