CN202803760U - Continuous mill center line adjusting device - Google Patents
Continuous mill center line adjusting device Download PDFInfo
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- CN202803760U CN202803760U CN 201220521259 CN201220521259U CN202803760U CN 202803760 U CN202803760 U CN 202803760U CN 201220521259 CN201220521259 CN 201220521259 CN 201220521259 U CN201220521259 U CN 201220521259U CN 202803760 U CN202803760 U CN 202803760U
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- vertical roller
- center line
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- roller
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Abstract
The utility model relates to a continuous mill center line adjusting device which comprises a horizontal roller and a vertical roller. Concave arc holes are arranged on roller bodies of the horizontal roller and the vertical roller, the vertical roller is an eccentric vertical roller, and the horizontal center lines of the concave arc holes on a roller body of the eccentric vertical roller upwards or downwards offset the horizontal center lines of the roller bodies. Compared with the prior art, the continuous mill center line adjusting device has the advantages of avoiding replacing location plats, removing a work process, shortening adjusting time and shutdown time, removing various location plate accessories with different thicknesses and being high in adjusting location accuracy, even in tube wall thickness of rolled steel tubes and good in quality.
Description
Technical field
The utility model relates to a kind of adjusting device of tandem mill center line.
Background technology
Existing tandem mill during rolled steel tube, must have plug and roll.Roll comprises three groups of horizontal rolls and three groups of vertical rollers, and every group of two rolls are arranged symmetrically with, and horizontal roll group and vertical roller group are alternately.Have on the roll body and the concave-arc hole that is complementary by the steel rolling tube diameter, claim the concave roll pass in the industry, the line of pass central point claims the pass center line, is called the tandem mill center line in the pass center line industry.The pass center is determined by the central point A of pass height direction and the central point B of pass width, is exactly pass central point O when A, B unify, and central point A determines that by the horizontal roll group central point B is determined by the vertical roller group.Existing tandem mill, by a kind of pass design arrangement, 110 passes for example, namely diameter of steel tube is Φ 110 ㎜, the foreground is that restraint chain base is fixed.According to the market demand, develop the steel pipe of rolling multiple diameter, for example diameter of steel tube is 95 ㎜, 126 ㎜, 133 ㎜, 140 ㎜.The steel pipe of rolling different-diameter, diameter of mandrel is different, and this has just caused the plug center line to change in restraint chain vertical direction, and during rolled steel tube, must make the tandem mill center line consistent with the plug center line, just can shut out the uniform steel pipe of respective diameters and wall thickness.And plug is positioned the restraint chain, and its center line can not be adjusted, and therefore must adjust the tandem mill center line.The adjustment of the tandem mill center line of prior art is: 1, change horizontal roll, the pass that makes roll be complementary by the steel rolling tube diameter.2, the leading screw on the rotation memorial archway, the distance of adjustment horizontal roll group two roll shop buildings makes two roll pass centers unifications.3, change vertical roller, the pass that makes roll be complementary by the steel rolling tube diameter.4, change location-plate and adjust vertical roller pass center, described replacing location-plate is exactly the location-plate before adjusting with the location-plate replacement of thickening or attenuate, and for example diameter of mandrel just replaces with the location-plate of attenuate from large to small.Otherwise, just replace with the location-plate of thickening.Its weak point is: change location-plate, and time-consuming taking a lot of work, downtime is long, affect output, and precision is difficult to reach requirement, causes the thickness of steel pipe inequality, and wall thickness accuracy is low, product quality grade decline.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point and adjusting device that a kind of tandem mill center line is provided.Use this device, it is fast to regulate the speed, and work efficiency is high, and precision is high, and the thickness of steel pipe that shuts out is even, and quality is good.
The utility model adopts following technical scheme.
The adjusting device of tandem mill center line, comprise horizontal roll and vertical roller, concave-arc hole is all arranged on the roll body of horizontal roll and vertical roller, and vertical roller is eccentric vertical roller, and the concave-arc hole cross central line on the eccentric vertical roller roll body is offset the roll body cross central line up or down.
The diameter of concave-arc hole is Φ 90 ㎜-Φ 145 ㎜ on the roll body of horizontal roll and eccentric vertical roller.
The diameter of concave-arc hole is Φ 95 ㎜ or Φ 140 ㎜ on the roll body of horizontal roll and eccentric vertical roller.
The concave-arc hole cross central line is offset roll body cross central line 1 ㎜-25 ㎜ up or down on the roll body of eccentric vertical roller.
The concave-arc hole cross central line offsets downward 7.5 ㎜ or upwards is offset 15 ㎜ with respect to the roll body cross central line on the roll body of eccentric vertical roller.
The utility model has the advantage of: adjust vertical roller with method of the present invention and device, need only replace with the eccentric vertical roller that is complementary with diameter of steel tube, need not to change location-plate; compared with the prior art; save an operation, shortened adjustment time and downtime, improved production operation efficiency; also saved the different location-plate spare part of numerous thickness; reduced production cost, and it is high to adjust positioning accuracy, the thickness of steel pipe that rolls out is even; the tube wall precision is high, and quality is good.
Description of drawings
Fig. 1 is standard vertical roll scheme of installation;
Fig. 2 is eccentric vertical roller scheme of installation;
Fig. 3 is plug, steel pipe, horizontal roll, vertical roller position relationship schematic diagram;
Fig. 4 is standard vertical roll structure schematic diagram;
Fig. 5 is eccentric vertical roller embodiment one structural representation;
Fig. 6 is eccentric vertical roller embodiment two structural representations.
The specific embodiment
With accompanying drawing the utility model is further described in conjunction with the embodiments.
Referring to Fig. 4, Fig. 5, Fig. 6, Fig. 4 is standard vertical roll 1 structural representation, and its roll body cross central line 11 is consistent with the cross central line of roll pass 12.Fig. 5 is eccentric vertical roller embodiment one structural representation, and the cross central line 92 of the pass 93 of eccentric vertical roller 9 is inconsistent with roll body cross central line 91, offsets downward, so be called eccentric vertical roller.The distance of skew is called eccentric throw.Fig. 6 is eccentric vertical roller embodiment two structural representations, and the cross central line 32 of the pass 33 of eccentric vertical roller 3 is inconsistent with roll body cross central line 31, upwards skew.Described roll pass refers to the shape of roll body concave-arc hole.
Referring to Fig. 1, be prior art standard vertical roll scheme of installation, standard vertical roll 1 is installed on the frame 7, and the roll pass center line is consistent with the plug center line, the central point unification, central point 10 as shown.Between frame bottom surface and memorial archway 5 bottom inner planes location-plate 6 is arranged, cover plate 4 is arranged at memorial archway top, connects with bolt, has adjusting screw 8 to screw on memorial archway 5 sidewalls, and its front end head heads in the frame side wall blind hole.Plug 13 is through in the endoporus of steel pipe 14, and respectively there is the same roll of a structure 1 on the steel pipe both sides, and roll is rolled steel tube in rotation, and two roll shop buildings have spring 2.If rolling diameter of steel tube changes, diameter of mandrel also will change, in order to make the roll pass center line consistent with the plug center line, will adjust the roll pass center line and also claim to adjust the tandem mill center line, prior art is adjusted vertical roller pass center line: first will change vertical roller, so that roll pass and diameter of steel tube are complementary.Second will change location-plate, so that the tandem mill center line is consistent with the plug center line.For example when diameter of mandrel from large to small the time, will replace with the location-plate of attenuate, otherwise, will replace with the location-plate of thickening.
Referring to Fig. 2, be the eccentric vertical roller scheme of installation of the utility model, with Fig. 1 difference be: being installed on the frame 7 is eccentric vertical roller 9.The structure of eccentric vertical roller 9 as shown in Figure 5, its offset distance x is that the distance of eccentric vertical roller 9 pass cross central lines 92 skew roll body cross central lines is that variable y according to diameter of mandrel determines that x is half of y.Rolling diameter of steel tube changes that is diameter of mandrel when changing, and only need replace with the eccentric vertical roller that is complementary just, need not change location-plate 6.Compared with the prior art, because need not to change location-plate, saved an operation, saved adjustment time and downtime, also saved the different location-plate spare part of numerous thickness, and it is high to adjust positioning accuracy, the thickness of steel pipe that rolls out is even, and quality is good.
Referring to Fig. 3, be plug, steel pipe, horizontal roll group, vertical roller group position relationship schematic diagram.Plug 13 is located and is penetrated in the endoporus of steel pipe 14 by restraint chain 51.Tandem mill has six groups of rolls, and every group of two rolls wherein have three groups of horizontal rolls 21,23,25, three groups of vertical rollers 22,24,26, and they are interphase distribution successively.The center line of tandem mill shown on the figure is consistent with the plug center line.If diameter of mandrel changes that is the plug center line changes, it is consistent with the plug center line just must to adjust the tandem mill center line, just can roll out the uniform steel pipe of respective diameters and wall thickness.
Use the step of device adjustment tandem mill center line of the present utility model as follows:
1, change horizontal roll, the pass that makes roll be complementary by the steel rolling tube diameter.
2, the leading screw on the rotation memorial archway, the distance of two roll shop buildings of adjustment horizontal roll group makes two roll pass centers unifications.
3, change vertical roller, with eccentric vertical roller alternate standard roll, make the pass of roll and eccentric throw and be complementary by steel rolling tube diameter and diameter of mandrel.
4, by above-mentioned three steps, the tandem mill center line reaches consistent with the plug center line.
Embodiment is as follows:
The tandem mill of existing a certain model arranges that by 110 passes namely institute's steel rolling tube external diameter is Φ 110 ㎜ during design, and internal diameter is Φ 100 ㎜, and the horizontal roll pass is that the concave-arc hole diameter is Φ 110 ㎜, and vertical roller is the standard roll, and the concave-arc hole diameter also is Φ 110 ㎜.Rolling Φ 110 steel pipes, diameter of mandrel Φ 100 ㎜, the tandem mill center line is consistent with the plug center line, does not need to adjust the tandem mill center line.This example is called the standard example.
One, embodiment one, rolling outer diameter of steel pipes is Φ 95 ㎜, internal diameter is Φ 85 ㎜, used diameter of mandrel is Φ 85 ㎜, with standard example relatively, plug center line 7.5 ㎜ that descended just must adjust the tandem mill center line, set-up procedure is as follows: 1, change horizontal roll, replace with the horizontal roll that the concave-arc hole diameter is Φ 95 ㎜.2, adjust the distance of two rolls of horizontal roll group, make the pass center unification of two rolls.3, replace with eccentric vertical roller, its concave-arc hole diameter is that Φ 95 ㎜, pass cross central line offset downward roll body cross central line 7.5 ㎜.
Two, embodiment two, rolling outer diameter of steel pipes is Φ 140 ㎜, internal diameter is Φ 130 ㎜, used diameter of mandrel is Φ 130 ㎜, with standard example relatively, plug center line 15 ㎜ that risen just must adjust the tandem mill center line, set-up procedure is as follows: 1, change horizontal roll, replace with the horizontal roll that the concave-arc hole diameter is Φ 140 ㎜.2, adjust the distance of two rolls of horizontal roll group, make the pass center unification of two rolls.3, replace with eccentric vertical roller, its concave-arc hole diameter is that Φ 140 ㎜, pass cross central line upwards are offset roll body cross central line 15 ㎜.
Claims (5)
1. the adjusting device of a tandem mill center line, comprise horizontal roll and vertical roller, concave-arc hole is all arranged on the roll body of horizontal roll and vertical roller, it is characterized in that: vertical roller is eccentric vertical roller, and the concave-arc hole cross central line on the eccentric vertical roller roll body is offset the roll body cross central line up or down.
2. the adjusting device of tandem mill center line according to claim 2, it is characterized in that: the diameter of concave-arc hole is Φ 90 ㎜-Φ 145 ㎜ on the roll body of horizontal roll and eccentric vertical roller.
3. the device of the method for adjustment of enforcement tandem mill center line according to claim 3, it is characterized in that: the diameter of concave-arc hole is Φ 95 ㎜ or Φ 140 ㎜ on the roll body of horizontal roll and eccentric vertical roller.
4. the adjusting device of tandem mill center line according to claim 2, it is characterized in that: the concave-arc hole cross central line is offset roll body cross central line 1 ㎜-25 ㎜ up or down on the roll body of eccentric vertical roller.
5. the adjusting device of tandem mill center line according to claim 5, it is characterized in that: the concave-arc hole cross central line offsets downward 7.5 ㎜ or upwards is offset 15 ㎜ with respect to the roll body cross central line on the roll body of eccentric vertical roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521259 CN202803760U (en) | 2012-10-12 | 2012-10-12 | Continuous mill center line adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521259 CN202803760U (en) | 2012-10-12 | 2012-10-12 | Continuous mill center line adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202803760U true CN202803760U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220521259 Expired - Fee Related CN202803760U (en) | 2012-10-12 | 2012-10-12 | Continuous mill center line adjusting device |
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| CN (1) | CN202803760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873103A (en) * | 2012-10-12 | 2013-01-16 | 衡阳华菱钢管有限公司 | Tandem mill central line adjusting method and device |
-
2012
- 2012-10-12 CN CN 201220521259 patent/CN202803760U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873103A (en) * | 2012-10-12 | 2013-01-16 | 衡阳华菱钢管有限公司 | Tandem mill central line adjusting method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20151012 |
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| EXPY | Termination of patent right or utility model |