DE1945872A1 - Rolling stand of a pipe cold rolling mill - Google Patents

Description

ZEUENiINu. LUYKEN

3ÖG0 MÖMciien 22

/ «!» Ibrücl - f »ns * r. δ

r.3ti-u-J Cemoj Metallurgii, September 10 ", 959

nepropetrovsk / USSR L / fa

P 26 747/2

SOi SiiSS POT PILLOW ROLLER

Jiz. The present invention "relates to rolling technology, in particular to rolling stands with cold pipe mills Ji.

Movable work stands of tube cold rolling mills are known, which have supports that are designed in the form of rollers that move on support beams. To avoid tipping over,? of the frame there are side guides on this, which are based on guides in the stand (see, for example, "Cold rolling of pipes" by SA Koff et al., USSR, 1951, p.28).

The existing supports are very heavy, and there the Gex-üst performs a reciprocating movement, has this ü an increase in inertial forces of the scaffold mass result, which the main reason for a rapid failure of elements the main drive is.

The uneven wear of the length of the support beams is the cause of forced scaffolding vibrations. aside from that is in the known constructions for the overcoming of frictional forces a high energy

^119811/1228

effort required.

Zv: 3ck of the present invention is the elimination of the warmed up if eight hurry.

The invention is based on the object of creating a movable roll stand with supports that has a ^ ini Has weight and is avoided at dea sliding friction, whereby.

Speed of the rolling mill as well as ease of movement of the scaffolding can be increased.

■ This task is accomplished by creating a 'rolling stand it for the tube cold rolling mill with gate direction to move it solved, which is set up on supports and in which the invention the support '. - of the roll frame "" "are designed as straight-line mechanisms, in particular y? -shaped 'Ishebyshev mechanisms.

Ia following the invention is based on the description of a Example of their execution and explained with reference to the accompanying drawings; shows in the drawings;

1 - the roll stand of the tube cold rolling mill according to the invention;

Pig. 2 - kinematic scheme of the straight Chebyshev mechanism serving as a support.

The proposed roll stand of the tube cold rolling mill consists of a stand 1 (FIG. 1) in which work rolls 2 are accommodated are. The scaffolding stand is set up on supports that represent Chebyshev mechanisms that guide straight ahead. Each of these mechanisms has a double-armed lever 3 s of which free end 'with the stand 1 of the roll stand-hinged ^

the end of which is connected to a bracket 5 via a crank 4 and, in the middle, via a rocker arm 6 to another bracket 7

109.811 / 1228 bad or.ginal

from döia üaup-uan-urieb (not shown in D'ig) via a Schubsüange 8 and a pull rod y. A similar movement is obtained at Gerus "cverschiebung a J ^ uruct A (Pig.1 and 2) of doppelarmigeri Iiebels 3 · The crank 4- leads a reciprocating movement within a Y.'irucels *? (Ii ¹ Ig.2 with regard to the axis (L · out, while the rocker arm b performs _{an analogous movement with respect to the axis O 2;}

A characteristic peculiarity of a straight-guiding mechanism is that when pivoting the lever 4 within the V / iniceis η egg l ^J univ: t A of the double-armed lever 3 παχ · a straight horizontal shift is achieved, whereby the type of movement of the aurle A motion law of the fifth A, i.e. the law of motion of the rolling iron, is determined by a movement law.

The dimensions of the G-lieaer aes ilechanismus Demist man depending on the required length aes horizontal Section H and from the specified deviation; . of JrutiKtes A from the horizontal.

Other known straight guides can also be used as supports , .lechanisms have been used in which j ^ unicte, the rectilinear Perform (or almost noisy) movements with the rolling stand are articulated.

These mechanisms can be found under aem Cierüs'i ;, over the Scaffolding or to be arranged to the side of it.

The number of these mechanisms can be different,

10 9 811/12 2 8 ^BA °

The proposed roll stand avoids otherwise necessary Support and! Guide surfaces both on the stand and on the stand under the roll stand. This unites « facht-C significant ^ the structure of the rolling mill ^

In addition, the framework according to the invention is distinguished by uinimal weight, which is why the inertial forces of the back and forth moving framework mass are not large, which can increase the speed of the rolling mill.

In the roll stand according to the invention, the energy losses considerably reduced for overcoming the forces of friction. Its ease of movement is increased. the Adjustment of the scaffolding and its operation are made considerably easier. The necessary repair work is reduced, shortens the duration of preventive measures.

The proposed movable roll stand fits into the dimensions of the working Rohrkai tv / al plants

. and can thereby bzc operating in stationary rolling mills without large expenses, as well as b i newly developed rolling mills can easily be inserted.

Attempts with this invention closely. An increase in the output of the raw cold rolling mills by 15-20%.

BATH ORiGINAL 109811/122 8

Claims (1)

September 10, 1969 P 26 7 ^ 7/2 - 5 - PATEHTAIiSPEUGH Hohrlcaltwalzwerk with; Device for its displacement, which is set up on supports : .. ^ _t d a characterized by that the supports of the roll stand. as straight leading mechanisms, especially - ^ - -shaped Chebyshev- mechanisms are designed. 109811/1228