SU1242272A1 - Arrangement for changing rolls of three-high rolling mill for cross rolling - Google Patents

Description

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The invention relates to rolling production and can be used to change roll assemblies in three roller helical rolling mills.

The purpose of the invention.and the reduction of the time of transfer rolls.

Figure 1 shows the proposed device, a general view; figure 2 is a section aa in figure 1.

The device for changing the rolls is made in the form of a bracket 1, on the upper horizontal portion of which a rack 2 is fixed, and on the other end is a housing 3 with a cylindrical bore 4. In this bore there is a sleeve 5 with a cylindrical bore 6, the axis of which is at an angle to the axis holes 4 of the housing 3, equal to the maximum angle of the rolls. In the housing 3, on the outer surface 7 of the sleeve 5, the crackers 8 are installed, the movement of which is carried out by screws 9 with different thread directions at the ends. The clamp is connected to the crane by means of the carriage 10, which covers the upper horizontal portion of the clamp and engages with the rack 2.

To change the roll assemblies, the fixture is fed by crane to the working

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 the stand, after which the insert is rotated to a position at which the axis of the cylindrical insert bore coincides with the direction

J axis of the shaft on which the roll is mounted. With further movement, jipij, to the roll assembly, the roll shaft pin enters the cylindrical bore of the insert, after which it is clamped

0 crackers 8, the movement of which is carried out by screw 9, have 5m opposite thread direction at the ends, and the roll unit is removed. Installing the prepared roll units in

15, the working stand is reversed.

The presence of a liner installed inside the housing body and having a cylindrical bore, the axis

20 which is located at an angle to the axis of the housing bore, it allows the bracket to be set in a vertical position regardless of the angle of rotation of the mill rolls, thereby providing 25 with the possibility of more efficient use of lifting and transporting equipment for changing rolls of three-roll mills of cross-helical rolling that significantly reduce

30 times for reloading the rolls of such mills, improve their maintenance and increase the productivity of the rolling mill.

Editor A.Ihiknna

FIG. one

Compiled by M. Korovina Tehred M. Khodanch: Proofreader L. Pilipenko

Order 3646/14 Tirazk 518 Subscription

VNSHSHI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

DEVICE FOR CHANGE OF ROLLS (L