SU1514435A1 - Multiroll working stand - Google Patents

Description

The invention relates to rolling production, specifically to the structures of multi-roll stands, roller pyramids which are located

in swivel cassettes. The purpose of the invention is to improve the performance of the Cage by increasing the service life of the roller bearings. The multi-roll rolling stand contains a glue frame. The invention relates to rolling production, and specifically to multi-roll stand structures, the roll pyramids of which are located in rotary cassettes.

• The purpose of the invention is to improve the performance of the stand by increasing the service life of the roller bearings.

Figure 1 presents multi roller stand, a General view; in Fig.2 a section aa in Fig.1.

2

Ty, pillows for accommodating rotary cassettes carrying roll pyramids. Swivel cassettes with the help of arc guides and hydraulic cylinders are pivotally connected with pillows. The supporting surface of the pillows and each rotary cassette is made along the radius of a circle with a center coinciding with the axis of the work roll. Each pillow is installed in straight lines. stand of the stand with the possibility of translational movement from the mechanism of the radial installation in the direction of regulation of the gap between the work rolls. This makes it possible to ensure that, when rolling with tension, the maximum rigidity of the multi-roll stand and to increase the efficiency of the support rollers of the roller pyramids due to the rational installation of the supporting groups of work rolls relative to the resulting pressure forces in the deformation zone, without changing the gap between the working rolls and in the process rolling.

1 з, п.Ф ~ лы, 2 Il.

The multi-roll rolling stand contains a bed 1, in the windows of which the upper and lower pillows 2 and 3 are installed. The upper pillow 2 is connected with the mechanism 4 of the radial roll installation. In both pillows are rotary cassette 5, carrying roll pyramids. The work rolls of the pyramids are installed in the support groups of the rollers 6, the axis 7, which are fixed in the rotary cassettes 5.

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four

3 1514435

In the swivel cassettes can be

various roll pyramids were installed: four-six-, six-, twelve-,

dvadtsativalkovyh mills. $

Each rotary cassette is mounted in a pillow and supported on an arcuate surface made along the radius of a circle with the center coinciding with the axis of rotation of the work roll 8. The cassettes 5 have an individual rotation drive in the form of a hydraulic cylinder, the body 9 of which is attached to the corresponding pillow, and the stem 10 - to cassette 15

The proposed crate works as follows.

The front end of the strip is set into the gap between the working rolls and the strip is captured by rotating rollers. Then, after filling the front end of the strip into the coiler or entering the next stand, a working tension is created. With the help of guide-25 rotary cylinders, the swivel cassettes together with the support rollers are rotated relative to the work rolls in the direction of tension of the strip, ensuring a uniform load on the support rollers. 30 This allows reduction mgogovalkovoy elastic deformation of the rolling stand when rolling with tension, improve the accuracy and durability of the rolling bearing rollers and uak- 35 as expansion of technological capabilities for rolling mills mnogovalkovyh by changing the front and rear tensioning widely pre ^-. '

40

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The economic effect resulting from the use of the invention is to increase productivity by reducing the cost of the bearings of work rolls, reducing downtime of the mill for transshipment associated with bearing failures.

Claims (2)

Claim 1. Multi-roll rolling stand, containing a frame, in the windows of which rotary cassettes are located with supporting surfaces in the form of segments that can be rotated in a vertical plane, the upper and lower pillows with roller sets, the mechanism of radial installation of the rolls and the individual drive of the cassettes rotation, differing in that, in order to improve the performance of the cage by increasing the life of the roller bearings, the pillows are installed directly in the frame's windows, and each of them has one of the separate cassettes carrying the corresponding upper and / or lower roller set, with the pillows having arcuate guides on which the swivel cassettes are supported with their segments, and the cassette turning drives are made in the form of hydraulic cylinders, the bodies of which are connected to the pillows, and the rods with the cassette segments so that the axis of their rotation lies in the rolling plane. 2. Crate on π. 1, I can tell you about it, because I have roll pyramids of multi-roll systems installed in the roll sets. I 51 0 /,. (5 figure 2.