CN203007304U - 120-ton converter non-drive side trunnion extension device - Google Patents

Abstract

The utility model relates to a 120 ton non-transmission side trunnion extension device of converter, it includes that one end is the spiale body that is the reducing of straight angle, the other end for the chamfer. The connecting shaft body is provided with a raised flange, and the raised flange is provided with a screw hole. The utility model discloses simple structure, small, low cost can cut into non-transmission side trunnion, has lengthened the length of trunnion after non-transmission side trunnion connects, provides a jacking point for the jacking to can bear the holistic weight of converter when the unilateral jacking, reach safe, swift purpose.

Description

120-ton converter non-drive side trunnion extension device

technical field

The utility model relates to the industrial technical field of converter equipment, in particular to a 120-ton converter non-drive side trunnion extension device.

Background technique

The converter is the main equipment for steelmaking in iron and steel enterprises. It occupies an important position in the entire steel production. The main equipment of the converter is heavy, and the bearing seat of the converter bears all the weight of the converter. The damage did not appear until much later. At present, iron and steel enterprises replace the trunnion bearings by making a jacking bracket at the bottom of the furnace to lift the converter as a whole, and then replace the trunnion bearings. The replacement of the trunnion bearings is a delicate work in maintenance, and it is necessary to fully consider the calculation of the strength of the temporary support. It cannot be done empirically. The installation of the temporary support should make full use of the conditions on site for installation. The disadvantage of this method is that the construction period is long, the construction tasks are large, difficult and costly.

Since there is no load-bearing foundation directly below the trunnion on the non-drive side of the 120-ton converter, but there is a load-bearing foundation obliquely below and the trunnion on the non-drive side is a hollow shaft, it is prone to collapse when the trunnion bearing is replaced.

Contents of the invention

The technical problem to be solved by the utility model is to provide a 120-ton converter non-drive side trunnion extension device with simple structure and fast loading and unloading.

In order to solve the above problems, the trunnion extension device on the non-drive side of the 120-ton converter described in the utility model is characterized in that it includes a shaft body with a variable diameter at one end that is flat and chamfered at the other end; The main body is provided with a protruding flange, and the protruding flange is provided with screw holes.

The diameter of the shaft body whose port on one side of the raised flange is chamfered is smaller than the diameter of the shaft body whose port on the other side of the raised flange is flat.

The raised flange is located at 1/4 to 1/3 of the total length of the shaft body from the chamfered end.

Compared with the prior art, the utility model has the following advantages:

1. The utility model can be cut into the trunnion of the non-transmission side, and the length of the trunnion is lengthened after being connected with the trunnion of the non-transmission side, which provides a jacking point for jacking, and can bear the overall load of the converter when jacking up on one side. The weight, therefore, improves the safety performance and avoids the occurrence of collapse phenomena.

2. The utility model completely replaces the old-fashioned under-furnace jacking device, reduces the processing cost and installation time, and shortens the overall construction period.

3. When the utility model is jacked up, the whole converter can only be tilted by 1° to complete the replacement of the trunnion bearing on the non-transmission side, and can ensure that the whole converter does not shift, which is convenient and fast.

4. The utility model has the advantages of simple structure, small volume and low cost, and can be applied to the replacement of trunnion bearings on the non-drive side of a 120-ton converter.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the concrete implementation schematic diagram of the utility model.

In the figure: 1—Shaft body 2—Screw hole 3—Jacking device with U-shaped bracket 4—Non-drive side bearing package 5—120 ton converter body 6—120 ton converter support ring 7—Drive side bearing package 8—Drive side bearing package basis 9—Non-drive side bearing package basis 10—Non-drive side trunnion.

Detailed ways

As shown in FIG. 1 , the trunnion extension device on the non-drive side of a 120-ton converter includes a shaft body 1 with a variable diameter whose one end is flat and the other end is chamfered. A protruding flange is provided on the connecting shaft body 1, and a screw hole 2 is provided on the protruding flange.

Wherein: the diameter of the shaft body 1 whose port on one side of the raised flange is chamfered is smaller than the diameter of the shaft body 1 whose port on the other side of the raised flange is flat.

The protruding flange is arranged at 1/4~1/3 of the total length of the shaft body 1 from the chamfered end.

When in use, (1) remove the non-drive side rotary joint of the 120-ton converter body 5; (2) disengage the tilting torsion bar of the 120-ton converter body 5; (3) pack the non-drive side bearings on both sides of the 120-ton converter body 5 and the drive side bearing package 7; (4) Install the shaft body 1 into the non-drive side trunnion 10, and use bolts to connect the flange plate with the bolt hole of the original rotary joint through the screw hole 2 (see Figure 2, the 6 is the 120-ton converter supporting ring, 8 is the foundation of the bearing package on the driving side, and 9 is the foundation of the bearing package on the non-driving side.) ; (5) Install a jack with the lifting device 3 of the U-shaped bracket under the trunnion 10 on the non-driving side, and then use the jack The group jacks up the non-drive side trunnion 10, and the bearing of the non-drive side trunnion 10 can be replaced after rising by 180mm.

Claims (3)

1. The trunnion extension device on the non-drive side of the 120-ton converter is characterized in that it includes a shaft body (1) with a variable diameter, one end is flat and the other end is chamfered; the shaft body (1) is provided with a convex The raised flange is provided with screw holes (2). 2. The trunnion extension device at the non-drive side of the 120-ton converter according to claim 1, characterized in that: the port on the side of the raised flange is chamfered and the diameter of the shaft body (1) is smaller than the The port on the other side of the raised flange is the diameter of the connecting shaft body (1) with a flat angle. 3. The 120-ton converter non-drive side trunnion extension device according to claim 1, characterized in that: the raised flange is set on the shaft body (1/4~1/3 of the distance from the chamfer end) ) total strengths.

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