CN2565556Y

CN2565556Y - Multi roller rolling mill

Info

Publication number: CN2565556Y
Application number: CN02230768U
Authority: CN
Inventors: 郑红专
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-15
Filing date: 2002-04-15
Publication date: 2003-08-13
Anticipated expiration: 2012-04-15
Also published as: RU28837U1; PT9845T; PL62427Y1; JP3093352U; PL113588U1; BR8202399U; ES1053209Y; DK200200321U3; ES1053209U; KR200312678Y1; FIU20020399U0; HU0200293V0; CZ12883U1; HU2535U; UA2018U

Abstract

The utility model discloses a multi-roller rolling mill. The utility model comprises a frame, an upper and a lower roller trains which respectively comprise a working roller, and a roller regulation device for regulating a gap between the two working rollers, wherein, each roller train also comprises each layer of supporting rollers which are positioned on the outer side of each corresponding working roller; the working rollers and each layer of supporting rollers on each corresponding outer side are arranged to form a pyramidal structure; in the structure of the supporting rollers which are more than two on the same layer, the diameter of the supporting roller positioned on the outer side is larger than the diameter of the supporting roller positioned on the inner side. When the multi-roller rolling mill of the utility model is used, the roller material can be saved, the service life of a bearing of each supporting roller, the downtime can be reduced, and accordingly, the production efficiency can be improved.

Description

Multi-roll mill

Technical field

The utility model relates to a kind of milling train, particularly relates to a kind of multi-roll mill.

Background technology

As everyone knows, multi-roll mill comprises upper and lower roll system, one or more layers backing roll that upper and lower roll system respectively comprises a working roll and is positioned at the outside.The roll-force that working roll transmitted when backing roll was used to bear work also is used to support working roll to reduce its deflection deformation, so that improve the rolling accuracy of rolled piece.

In traditional multi-roll mill, in the same one deck backing roll that comprises more than two backing rolls, be positioned at inboard backing roll and have identical diameter, and support with the bearing of same size specification with the backing roll that is positioned at the outside.

Yet practice shows, in the same one deck backing roll that comprises more than two backing rolls, is arranged in the inboard power that backing roll bore much smaller than the power that backing roll bore that is positioned at the outside with one deck backing roll.Correspondingly, the bearing of backing roll bears bigger load outside being used to support, thereby than the easier damage of the bearing that is used for the supported roller.In order to address this problem, traditional way is, after milling train work a period of time, the bearing that will be used to support the bearing of medial support roller and be used for bearing outside backing roll is exchanged, so that the service life of balanced each bearing.

But there are many drawbacks in this way.At first, in order to exchange bearing, milling train must be stopped work, thereby therefore causes the pause of production to influence production efficiency; Secondly, because inside and outside backing roll has same diameter, therefore cause the waste of roll material.

The utility model content

A purpose of the present utility model provides a kind of multi-roll mill, and it can save the life-span of roll material and balanced supporting roller bearing.

For achieving the above object, the utility model provides a kind of multi-roll mill, comprises a frame; Up-down rollers system, up-down rollers system respectively comprises a working roll; And the roll gap adjusting device that is used to adjust the roll gap between the double-working; Described each roller system also comprises one or more layers backing roll that is positioned at the relevant work roller outside, working roll and respective outer backing roll are positioned to pyramidal structure, in the same one deck backing roll that comprises more than two backing rolls, the diameter of the backing roll outside being positioned at is greater than the diameter that is positioned at inboard backing roll.

Adopt multi-roll mill of the present utility model, not only can save the life-span of roll material and balanced each supporting roller bearing, thereby and can reduce downtime and enhance productivity.And because in the same one deck backing roll more than two backing rolls, the diameter of medial support roller is less than the diameter of outside backing roll, the medial support roller can adopt the relatively little bearing supporting of size, therefore helps the structural configuration of roller system.

Description of drawings

In order better to understand the utility model, below in conjunction with drawings and Examples the utility model is described in further detail, wherein

Fig. 1 is the structural representation of the utility model multi-roll mill.

The specific embodiment

Referring now to Fig. 1, it shows a preferred embodiment of the utility model multi-roll mill.As shown in Figure 1, multi-roll mill of the present utility model comprises a frame 10, top and bottom rolls seat 4 and 5 and be arranged on up-down rollers system in the frame.Up-down rollers system is arranged between the top and bottom rolls seat and by the roller base supporting, each roller is ground floor backing roll and the second layer backing roll that comprises a working roll 1 and be positioned at the relevant work roller outside.The ground floor backing roll comprises two backing rolls 2, and second layer backing roll comprises three backing rolls.Working roll and respective outer backing roll are positioned to pyramidal structure.Rolled parts is represented with Reference numeral 12.Be equiped with screwdown gear 6 between the interior upper wall of topping roll seat and frame 10, screwdown gear can move up and down, and drives the topping roll seat and moves up and down in frame 10, so that adjust the size of the roll gap between the double-working.

In the utility model, as shown in Figure 1, in comprising the second layer backing roll of three backing rolls, the diameter that is positioned at inboard backing roll 7 is less than with the diameter of one deck meta in the backing roll 3 in the outside.Because by mechanical analysis as can be known, be positioned at the inboard load that backing roll bore and be significantly less than the outside load that backing roll bore.Correspondingly, the medial support roller is with the less bearing supporting of size.

According to the utility model, because in the same one deck backing roll that comprises more than two backing rolls, the diameter of medial support roller is less than the diameter of respective outer backing roll.Therefore, by reducing the diameter of medial support roller, saved roll material.On the other hand, owing to select corresponding bearing for use according to the actual load of bearing of medial and lateral backing roll, the bearing of routine backing roll can be realized equivalent life basically inside and outside being used to support.

In conjunction with the accompanying drawings and embodiments multi-roll mill of the present utility model is illustrated above.Yet the insider should be understood that top embodiment only is exemplary and nonrestrictive, under the situation that does not deviate from the utility model spirit and scope, can make various improvement to the utility model.

For example, in the above-described embodiments, each roller system comprises two-layer outside backing roll.But application of the present utility model is not limited to the multi-roll mill with two-layer outside backing roll, but can be applied to have the milling train of two-layer above outside backing roll equally.In the case, in each the outer backing roll that has more than two backing rolls, be positioned at the diameter of outer field backing roll in less than equivalent layer in the diameter of the backing roll of inboard with one deck meta.

In the above-described embodiments, up-down rollers system is supported on the top and bottom rolls seat.But it is multi-roll mill and other the various types of multi-roll mills that directly are supported on the frame that the utility model is equally applicable to up-down rollers.

Claims

1, a kind of multi-roll mill comprises:

One frame;

Up-down rollers system, up-down rollers system respectively comprises a working roll; And

Be used to adjust the roll gap adjusting device of the roll gap between the double-working; It is characterized in that

Described each roller system also comprises each layer backing roll that is positioned at the relevant work roller outside, working roll and each layer of respective outer backing roll are positioned to pyramidal structure, in the same one deck backing roll that comprises more than two backing rolls, the diameter of the backing roll outside being positioned at is greater than the diameter that is positioned at inboard backing roll.

2. multi-roll mill as claimed in claim 1 is characterized in that, described each roller system comprises two-layer outside backing roll.

3. multi-roll mill as claimed in claim 1 is characterized in that, described each roller system comprises three layers of outside backing roll.