CN105728503A - Device arrangement structure capable of improving uniformity of after-straightened section of steel rail - Google Patents
Device arrangement structure capable of improving uniformity of after-straightened section of steel rail Download PDFInfo
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- CN105728503A CN105728503A CN201610128630.6A CN201610128630A CN105728503A CN 105728503 A CN105728503 A CN 105728503A CN 201610128630 A CN201610128630 A CN 201610128630A CN 105728503 A CN105728503 A CN 105728503A
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- rail
- straightening machine
- steel rail
- spacing
- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
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Abstract
The invention relates to the field of steel rail rolling, in particular to a device arrangement structure capable of improving uniformity of an after-straightened section of a steel rail. According to the device arrangement structure capable of improving the uniformity of the after-straightened section of the steel rail, the technical aims that the pass length specification of the steel rail is more uniform, the residual stress is reduced, and meanwhile the steel rail can be more stably fed into the next working procedure are achieved. According to the technical scheme, the device arrangement structure capable of improving the uniformity of the after-straightened section of the steel rail comprises the steel rail to be rolled, a horizontal straightening machine and a vertical straightening machine; a steel rail specification homogenization device is arranged between the horizontal straightening machine and the vertical straightening machine; and the steel rail to be rolled subsequently passes through the horizontal straightening machine, the steel rail specification homogenization device and the vertical straightening machine. The device arrangement structure is small in modification of an original structure, however, the product quality can be improved in a higher control precision manner, and the structure is particularly suitable for being used in a high-speed steel rail straightening technology.
Description
Technical field
The present invention relates to steel rail rolling field, especially one improves homogeneity of fault plane device arrangement after rail is rectified.
Background technology
All adopt flat vertical compound straightening technique that rail is aligned during seamed high-speed steel rail aligning.Wherein, flat vertical compound straightening machine is made up of horizontal straightener and vertical straightening machine, and horizontal straightener is generally 7～11 rollers, and vertical straightening machine is generally 5～9 rollers.Rail carries out vertical straightening machine by the centering guider between horizontal straightener and vertical straightening machine and carries out the aligning of left and right directions bending after completing the aligning of above-below direction bending in horizontal straightener.But, such mode is poor to the control of precision, it is difficult to meet the quality of production requirement of seamed high-speed steel rail.
Summary of the invention
The technical problem to be solved is to provide one makes the elongated specification of rail more uniform, and reduces residual stress, homogeneity of fault plane device arrangement after simultaneously more stably being rectified by the improvement rail of next for rail feeding operation.
The technical solution adopted for the present invention to solve the technical problems is: improve homogeneity of fault plane device arrangement after rail is rectified, including rail to be rolled, including horizontal straightener and vertical straightening machine, being provided with rail specification uniforming device between described horizontal straightener and vertical straightening machine, described rail to be rolled sequentially passes through horizontal straightener, rail specification uniforming device and vertical straightening machine.
It is further, including the front spacing (Lh) between last roller centrage of horizontal straightener and first roller centrage of rail specification uniforming device, described front spacing (Lh) >=L1+Dh/2+L2+D1/2+1.3mm～1.5mm, wherein: L1 is horizontal straightener outlet guide length, Dh is straightening ring maximum functional diameter, L2 is rail specification uniforming device inlet guide length, and D1 is roll maximum gauge.
It is further, including the rear spacing (Lv) between last roller centrage of uniforming device and first centrage of vertical straightening machine, described rear spacing (Lv) meets: (3 × Dv ÷ 2) < Lv < Lh and Lv=(0.45～0.3) × (Lh+Lv), wherein: Dv is vertical straightening machine maximum functional roller diameter.
It is further, including the breast roller centreline spacing (L) in rail specification uniforming device, described breast roller centreline spacing (L) meets L=l1+d1/2+l2+d2/2+1.3mm～1.5mm, wherein l1 is interior first the rack outlet guide and guard length of rail specification uniforming device (2), d1 is roll maximum functional diameter in described first frame, l2 is second frame inlet guide length, and d2 is roll maximum gauge in described second frame.
The invention has the beneficial effects as follows: first the present invention is additionally arranged rail specification uniforming device between horizontal straightener and vertical straightening machine, so can after implementation specification homogenization steel rail straightness remedy control, simultaneously, straight compound straightening machine also can be coordinated to complete the comprehensive optimization to rail profile specification, thus making the elongated specification of rail more uniform, reducing residual stress, next operation sent into by rail by Simultaneous Stabilization ground.Original structure is changed less by the present invention, but can improve the quality of product on more high control precision, is particularly suited among seamed high-speed steel rail straightening process and uses.
Accompanying drawing explanation
Fig. 1 is the arrangement schematic diagram of the present invention.
Figure is labeled as: horizontal straightener 1, rail specification uniforming device 2, vertical straightening machine 3, rail to be rolled 4, front spacing (Lh), rear spacing (Lv).
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Rear homogeneity of fault plane device arrangement rectified by improvement rail as shown in Figure 1, including rail 4 to be rolled, including horizontal straightener 1 and vertical straightening machine 3, being provided with rail specification uniforming device 2 between described horizontal straightener 1 and vertical straightening machine 3, described rail 4 to be rolled sequentially passes through horizontal straightener 1, rail specification uniforming device 2 and vertical straightening machine 3.
Front spacing (Lh) between last roller centrage of horizontal straightener 1 and 2 first roller centrages of rail specification uniforming device is the spacing distance of horizontal straightener 1 and rail specification uniforming device 2, and the rear spacing (Lv) between last roller centrage of rail specification uniforming device 2 and first centrage of vertical straightening machine 3 is the rail specification uniforming device 2 spacing distance to vertical straightening machine 3.The defining method that the two spacing distance is determined is identical, and it determines that principle is as follows:
1, the rail 4 to be rolled deformation in neighbouring device is not disturbed.Mutual rail does not produce to interfere during deformation in horizontal straightener 1 with rail specification uniforming device 2, and namely the deformation of rail in last 1 to 2 smoothing roll of horizontal straightener 1 and running orbit will not be subject to the 1st group of roll forming of rail specification uniforming device 2 and become the impact of stress.Equally, rail 4 to be rolled does not produce to interfere during deformation in vertical straightening machine 3 with rail specification uniforming device 2, and namely the deformation of rail in the 1st to 2 smoothing roll of vertical straightening machine 3 and running orbit will not be subject to the last 1 group of roll forming of rail specification uniforming device 2 and become the impact of stress.
2, ensure that rail 4 to be rolled is in a state relatively freely before entering next equipment.Horizontal straightener end of rail out has not had the elastic and plastic properties deformation that level aligning is formed before entering rail specification uniforming device 2, it is in a relative free state, so that guide and guards and rail specification uniforming device 2 depress roller energy steady operation, it is not knocked.Equally, the elastic and plastic properties deformation that rail specification uniforming device 2 end of rail out has been formed after not had specification homogenization before entering vertical straightening machine 3, it is in a relative free state, it is simple to guide and guards and vertical straightening machine 3 energy steady operation, is not knocked.
3, ensure the installation site of guide and guards, have the installation for guide and guards of enough spaces.
When practical application, setting for front spacing (Lh) and rear spacing (Lv) is particularly important, so-called front spacing (Lh), refer to the spacing between last roller centrage of horizontal straightener 1 and 2 first roller centrages of rail specification uniforming device, described rear spacing (Lv), refers to the rear spacing (Lv) between last roller centrage of uniforming device 2 and first centrage of vertical straightening machine 3.Therein, front spacing Lh between last roller centrage of horizontal straightener 1 and 2 first roller centrages of rail specification uniforming device, front spacing (Lh) >=L1+Dh/2+L2+D1/2+1.3mm～1.5mm should be met, wherein: L1 is horizontal straightener outlet guide length, Dh is straightening ring maximum functional diameter, L2 is rail specification uniforming device inlet guide length, and D1 is roll maximum gauge.Should meet for the rear spacing (Lv) between last roller centrage of uniforming device 2 and first centrage of vertical straightening machine 3: (3 × Dv ÷ 2) < Lv < Lh and Lv=(0.45～0.3) × (Lh+Lv), wherein: Dv is vertical straightening machine maximum functional roller diameter, wherein parameter (0.45～0.3) is to regulate the rail specification uniforming device 2 relative position ratio between horizontal straightener 1 and vertical straightening machine 3.
Additionally, when actual set, also having the distance that neighbouring device is not knocked to select, namely minimum range ensures.The rolled piece first having to ensure to enter next equipment is completely in a free state, can be calculated according to the intensity of rail, coefficient of elasticity and the case of bending before entering next equipment.Generally choose maximum yield strength in product mix, maximum specification, standard maximum allow flexibility to carry out the calculating of spacing: in conjunction with practical experience, illustrate with following Examples: maximum specification 75kg/m rail, yield strength be up to 880MPa, maximum overproof on when bending to 0.6mm/m, the minimum length entering next equipment by deadweight free and stable is 16.3m.If it is considered that the impact resistance 100KN of guide and guard, then its minimum length is 6.5m；Maximum specification 75kg/m rail, yield strength be up to 880MPa, maximum overproof under when bending to 0.2mm/m, when impact force reaches 100KN, the minimum length of (design allows maximum impact force) is 6.2m；Maximum specification 75kg/m rail, yield strength is up to 880MPa, maximum overproof bends right and left when reaching 0.4mm/m, and when impact force reaches 100KN, the minimum length of (design allows maximum impact force) is 7.6m.Wherein, when shock factor determines spacing, need to consider that spacing causes production line oversize too greatly, also affect the rail operation stability when neighbouring device is nipped simultaneously simultaneously.Therefore need to consider that certain impulsive force is born in guide and guard, be generally the 80% of maximum impact force.
It addition, there is also the determination problem of spacing between rail specification uniforming device 2 frame.The determination of frame spacing for the same size item of rail specification uniforming device 2: include the breast roller centreline spacing (L) in rail specification uniforming device 2, described breast roller centreline spacing (L) meets L=l1+d1/2+l2+d2/2+1.3mm～1.5mm, wherein l1 is interior first the rack outlet guide and guard length of rail specification uniforming device 2, d1 is roll maximum functional diameter in described first frame, l2 is second frame inlet guide length, and d2 is roll maximum gauge in described second frame.Wherein, the head breadth, between bottom width uniforming device interior framework the defining method of spacing with the defining method of the high-homogenized frame spacing of rail.It addition, for the determination of spacing between the different size item unit of rail specification uniforming device 2: one, identical for deformation direction, between the head breadth, bottom width specification item frame group, its defining method of spacing is with the defining method of spacing between above-mentioned same size item frame；Between two, high for the different rail of deformation direction and bottom width head breadth unit, spacing is determined, then need to consider the relation of mutual deformation effect.But rail is when bottom width (if after bottom width unit layout high unit in-orbit) or the head breadth (if after head breadth unit layout high unit in-orbit) direction stress, left and right directions is stress simultaneously, do not have rail slip in pass, stress in rail in-orbit high unit and rail movement locus will not be produced impact, therefore between the head breadth or bottom width and rail high standard item frame group its defining method of spacing also with the defining method of spacing between same size item frame.
Embodiment
Certain beam-and-rail factory increases a set of rail specification uniforming device 2 (being called for short RDD device) between an omnipotent horizontal straightener of line and vertical straightening machine, for the various rail kinds that adaptation rolls, the layout between straightener and described RDD device adopts mode as follows:
Spacing Lh between last roller centrage of horizontal straightener 1 and first roller centrage of RDD device:
Horizontal straightener outlet guide length L1=(0.7～0.9) straightening ring maximum functional diameter D1 (1.2m), and rail high-homogenized device portal guide and guard length L2=(1.0～1.2) roll maximum dimension D 2 (0.4mm).The then spacing between last roller centrage of horizontal straightener 1 and first roller centrage of RDD device: Lh >=L1+1.2/2+L2+0.4/2+1.3～1.5=1.1+1.2/2+0.2+1.5=3.6m.Maximum specification 75kg/m rail, yield strength is up to 880MPa, and the gap length between last roller centrage of horizontal straightener and first roller centrage of RDD device is taken as 7m.
Spacing Lv between 3 first roller centrages of vertical straightening machine and last roller centrage of RDD device:
Calculating according to Lv=(0.45～0.3) × (Lh+Lv), coefficient is taken as 0.4
Lv=4.7 rice
Distance between RDD device roller is determined: D1=D2=0.4m
L=L1+D1/2+L2+D2/2+1.3～1.5=0.6+0.4/2+0.7+0.4/2+1.3=3 rice
Straightening process integral layout is: horizontal last roller of straightener 1 to the centre-to-centre spacing of RDD first be 7m, RDD two frame center distance be 3 meters, RDD the second frame and vertical straightening machine the first roller centre-to-centre spacing are 4.7 meters.This arrangement form is adopted to effectively prevent the sideslip problem of rail in conjunction with the effect of guide and guard.
Claims (4)
1. improve homogeneity of fault plane device arrangement after rail is rectified, including rail to be rolled (4), it is characterized in that: include horizontal straightener (1) and vertical straightening machine (3), being provided with rail specification uniforming device (2) between described horizontal straightener (1) and vertical straightening machine (3), described rail to be rolled (4) sequentially passes through horizontal straightener (1), rail specification uniforming device (2) and vertical straightening machine (3).
2. improve homogeneity of fault plane device arrangement after rail is rectified as claimed in claim 1, it is characterized in that: include the front spacing (Lh) between last roller centrage of horizontal straightener (1) and (2) first roller centrages of rail specification uniforming device, described front spacing (Lh) >=L1+Dh/2+L2+D1/2+1.3mm～1.5mm, wherein: L1 is horizontal straightener outlet guide length, Dh is straightening ring maximum functional diameter, L2 is rail specification uniforming device inlet guide length, and D1 is roll maximum gauge.
3. improve homogeneity of fault plane device arrangement after rail is rectified as claimed in claim 2, it is characterized in that: include the rear spacing (Lv) between last roller centrage of uniforming device (2) and first centrage of vertical straightening machine (3), described rear spacing (Lv) meets: (3 × Dv ÷ 2) < Lv < Lh and Lv=(0.45～0.3) × (Lh+Lv), wherein: Dv is vertical straightening machine maximum functional roller diameter.
4. improve homogeneity of fault plane device arrangement after rail is rectified as claimed in claim 3, it is characterized in that: the breast roller centreline spacing (L) including in rail specification uniforming device (2), described breast roller centreline spacing (L) meets L=l1+d1/2+l2+d2/2+1.3mm～1.5mm, wherein l1 is interior first the rack outlet guide and guard length of rail specification uniforming device (2), d1 is roll maximum functional diameter in described first frame, l2 is second frame inlet guide length, d2 is roll maximum gauge in described second frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128630.6A CN105728503B (en) | 2016-03-08 | 2016-03-08 | Improve rail and rectify rear homogeneity of fault plane device arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128630.6A CN105728503B (en) | 2016-03-08 | 2016-03-08 | Improve rail and rectify rear homogeneity of fault plane device arrangement |
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| Publication Number | Publication Date |
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| CN105728503A true CN105728503A (en) | 2016-07-06 |
| CN105728503B CN105728503B (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610128630.6A Active CN105728503B (en) | 2016-03-08 | 2016-03-08 | Improve rail and rectify rear homogeneity of fault plane device arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634624A (en) * | 2021-07-22 | 2021-11-12 | 武汉钢铁有限公司 | Method for controlling steel rail symmetry in straightening process |
Citations (7)
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|---|---|---|---|---|
| JPH04197525A (en) * | 1990-11-27 | 1992-07-17 | Nippon Steel Corp | Method for straightening coil like steel tube |
| JPH1177161A (en) * | 1997-09-03 | 1999-03-23 | Nippon Steel Corp | Rail straightening device |
| CN2514950Y (en) * | 2001-11-02 | 2002-10-09 | 北新建材(集团)有限公司 | Straightening machine for profile |
| CN201291255Y (en) * | 2008-11-20 | 2009-08-19 | 攀枝花钢铁(集团)公司 | High-temperature rail straightener |
| CN101579696A (en) * | 2009-07-03 | 2009-11-18 | 攀枝花新钢钒股份有限公司 | Method for improving steel rail straightening blind area |
| CN101602164A (en) * | 2009-07-21 | 2009-12-16 | 攀枝花新钢钒股份有限公司 | Rail straghtener |
| CN103071703A (en) * | 2013-02-19 | 2013-05-01 | 中冶赛迪工程技术股份有限公司 | Section steel straightening device and method |
-
2016
- 2016-03-08 CN CN201610128630.6A patent/CN105728503B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04197525A (en) * | 1990-11-27 | 1992-07-17 | Nippon Steel Corp | Method for straightening coil like steel tube |
| JPH1177161A (en) * | 1997-09-03 | 1999-03-23 | Nippon Steel Corp | Rail straightening device |
| CN2514950Y (en) * | 2001-11-02 | 2002-10-09 | 北新建材(集团)有限公司 | Straightening machine for profile |
| CN201291255Y (en) * | 2008-11-20 | 2009-08-19 | 攀枝花钢铁(集团)公司 | High-temperature rail straightener |
| CN101579696A (en) * | 2009-07-03 | 2009-11-18 | 攀枝花新钢钒股份有限公司 | Method for improving steel rail straightening blind area |
| CN101602164A (en) * | 2009-07-21 | 2009-12-16 | 攀枝花新钢钒股份有限公司 | Rail straghtener |
| CN103071703A (en) * | 2013-02-19 | 2013-05-01 | 中冶赛迪工程技术股份有限公司 | Section steel straightening device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634624A (en) * | 2021-07-22 | 2021-11-12 | 武汉钢铁有限公司 | Method for controlling steel rail symmetry in straightening process |
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| CN105728503B (en) | 2018-04-13 |
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