CN204381061U - A kind of high-speed bar mill mm finishing mill unit - Google Patents
A kind of high-speed bar mill mm finishing mill unit Download PDFInfo
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- CN204381061U CN204381061U CN201420795541.3U CN201420795541U CN204381061U CN 204381061 U CN204381061 U CN 204381061U CN 201420795541 U CN201420795541 U CN 201420795541U CN 204381061 U CN204381061 U CN 204381061U
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Abstract
A kind of high-speed bar mill mm finishing mill unit, comprise base and be arranged on the mm finishing mill unit of finishing mill composition of some groups of topcross at 45 ° on base, interlaced arrangement, be provided with the step-up gear be connected with motor in the side of base, this step-up gear is connected with the mm finishing mill unit of topcross at 45 °, interlaced arrangement respectively by both sides output shaft.The mm finishing mill unit that the utility model adopts 45 ° of topcross, the finishing mill of interlaced arrangement forms, realizes the high speed of bar, no twist rolling.Adopt cantilevered collars milling train to connect, collars groove dimensional accuracy is high, centre-to-centre spacing is short between roll, makes material bounce in continuous rolling process and vibrate little.Substantially increase dimensional accuracy and the quality of rolled piece.High mill speed substantially increases the production efficiency of steel mill simultaneously.
Description
Technical field
The utility model belongs to metallurgy industry steel rolling equipment technical field, is specifically related to a kind of high speed, close tolerance bar mm finishing mill unit equipment.
Background technology
Bar refers to the Constructional Steel with cross rib and vertical rib on the cylinder of light face, and intensity and dimensional accuracy have stricter requirement.Market there are minor diameter wire rod steel and major diameter vertical bar steel.The rolling of existing domestic bar all adopts flat roll mill, i.e. memorial archway formula two roller flat roll mill.Mill speed is not high, and the artificial Adjustment precision of the pass of flat roll mill is low in addition, and due to frame spacing large, therefore during rolling the bouncing distortion of material and rolling vibration larger.Therefore bar rolled piece dimensional accuracy is lower, production efficiency is lower.
Summary of the invention
The purpose of this utility model is to provide a kind of dimensional accuracy and the quality that not only increase rolled piece, improves the high-speed bar mill mm finishing mill unit that mill speed substantially increases steel mill's production efficiency simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: comprise base and be arranged on the mm finishing mill unit of finishing mill composition of some groups of topcross at 45 ° on base, interlaced arrangement, be provided with the step-up gear be connected with motor in the side of base, this step-up gear is connected with the mm finishing mill unit of topcross at 45 °, interlaced arrangement respectively by both sides output shaft.
Described finishing mill adopts cantilevered collars milling train.
Described mm finishing mill unit adopts complete 6 frame 8 cun of finishing mills.
Described every side separate unit finishing mill is contacted successively by shaft coupling, and is connected with gearbox output shaft.
Described mill speed is 30-35m/s.
The mm finishing mill unit that the utility model adopts 45 ° of topcross, the finishing mill of interlaced arrangement forms, realizes the high speed of bar, no twist rolling.
Further employing cantilevered collars milling train connects, and collars groove dimensional accuracy is high, centre-to-centre spacing is short between roll, makes material bounce in continuous rolling process and vibrate little.Substantially increase dimensional accuracy and the quality of rolled piece.High mill speed substantially increases the production efficiency of steel mill simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model high-speed bar mill mm finishing mill unit overall structure schematic diagram;
Fig. 2 is the side view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present utility model and operation principle are described in further detail.
See Fig. 1,2, the utility model comprises base 8 and is arranged on the mm finishing mill unit of cantilevered collars milling train composition of some groups of topcross at 45 ° on base 8, interlaced arrangement, what the present embodiment adopted is complete 6 frame 8 cun of finishing mills, the step-up gear 1 be connected with motor is provided with in the side of base 8, this step-up gear 1 is connected with the mm finishing mill unit of topcross at 45 °, interlaced arrangement respectively by both sides output shaft, and every side separate unit finishing mill is contacted successively by shaft coupling.
The utility model desin speed is 40m/s, and practical rolling speed reaches 30-35m/s.Wherein primary drive equipment has: step-up gear 1,1,2,3,4,5,6, number finishing mill 2,3,4,5,6,7; Mm finishing mill unit base 8; The upper and lower collars 9,10 of finishing mill roll.Power is provided by motor, is connected with step-up gear 1 power shaft, and power is connected with both sides mm finishing mill unit by both sides output shaft by step-up gear 1 more respectively, and finishing mill is connected by internal gear, finally realizes the rotation rolling of top and bottom rolls axle.
The utility model adopts mm finishing mill unit central driving, shorten the rolling distance between flat roll mill, therefore the vibration of bar diminishes in rolling.Adopt cantilevered collars finishing mill, 45 ° of topcross interlaced arrangement, avoid the torsion rolling of rolled piece steel between each rolling pass of flat roll mill simultaneously, cantilevered collars groove simultaneously, by grinding accuracy higher than flat roll mill, and its adjustment is simple, and precision is easy to ensure.And flat roll mill is due to reasons such as the low and vibrations of Adjustment precision, rolling accuracy changes larger.In addition this finishing mill rolling center distance roll mandrel filmatic bearing support distances is short, therefore this finishing mill rolling rigidity is large, is easy to reduce vibration.So while raising rolling bar speed, dimensional accuracy and the rolling quality of rolling bar can be ensured.Considerably improve the deficiency of bar in adopting flat roll mill to produce, for the high speed of bar, high precision rolling provide equipment support.
As this high-speed bar mill mm finishing mill unit of Fig. 1 is different from traditional two roller plain-barreled roll finishing bar mills.Adopt a motor central driving, by with mm finishing mill unit with the use of step-up gear 1, power is outputted to finishing mill line both sides by speedup point speed, and illustrates 1-7 finishing mill and be connected.1-7 finishing mill at 45 ° interlocking arranges successively, is installed on mm finishing mill unit base 8.Every side separate unit finishing mill is contacted successively by shaft coupling, and is connected with gearbox output shaft, realizes continuous central driving.Every platform finishing mill, by internal gear transmission, finally realizes the relative rolling of top and bottom rolls beaming roller ring 9,10.Finishing mill 45 ° is alternately arranged, achieves the Minimal Tension of steel, continuous, no twist rolling.This finishing bar mill group adopts cantilevered collars milling train as can be seen from Fig. 2, and rolling mill structure is compact, and installed surface distance rolling center size is little, so rolling tilting moment is little, rigidity is large, vibration force is little.Thus major diameter, the high dimensional accuracy rolling of bar can be realized.Tradition flat roll mill adopts roller bearings, therefore mill speed is lower, and this mm finishing mill unit roll mandrel adopts liquid oil film bearings, and under friction, rigidity is large, temperature rise is comparatively slow, can significantly improve mill speed, effectively improve the production efficiency of steel mill's bar.
Claims (4)
1. a high-speed bar mill mm finishing mill unit, it is characterized in that: comprise base (8) and be arranged on the mm finishing mill unit of finishing mill composition of some groups of topcross at 45 ° on base (8), interlaced arrangement, be provided with the step-up gear (1) be connected with motor in the side of base (8), this step-up gear (1) is connected with the mm finishing mill unit of topcross at 45 °, interlaced arrangement respectively by both sides output shaft.
2. high-speed bar mill mm finishing mill unit according to claim 1, is characterized in that: described finishing mill adopts cantilevered collars milling train.
3. high-speed bar mill mm finishing mill unit according to claim 1, is characterized in that: described mm finishing mill unit adopts complete 6 frame 8 cun of finishing mills.
4. high-speed bar mill mm finishing mill unit according to claim 1, is characterized in that: described every side separate unit finishing mill is contacted successively by shaft coupling, and is connected with gearbox output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795541.3U CN204381061U (en) | 2014-12-15 | 2014-12-15 | A kind of high-speed bar mill mm finishing mill unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795541.3U CN204381061U (en) | 2014-12-15 | 2014-12-15 | A kind of high-speed bar mill mm finishing mill unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204381061U true CN204381061U (en) | 2015-06-10 |
Family
ID=53353817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420795541.3U Active CN204381061U (en) | 2014-12-15 | 2014-12-15 | A kind of high-speed bar mill mm finishing mill unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204381061U (en) |
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2014
- 2014-12-15 CN CN201420795541.3U patent/CN204381061U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |