CN106270321B - It is a kind of to push away the equipment and method for rolling shaping rail - Google Patents

It is a kind of to push away the equipment and method for rolling shaping rail Download PDF

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Publication number
CN106270321B
CN106270321B CN201510307742.3A CN201510307742A CN106270321B CN 106270321 B CN106270321 B CN 106270321B CN 201510307742 A CN201510307742 A CN 201510307742A CN 106270321 B CN106270321 B CN 106270321B
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CN
China
Prior art keywords
roller
roll
rail
shaping
rolling
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CN201510307742.3A
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Chinese (zh)
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CN106270321A (en
Inventor
李世宽
黄志明
冯克敏
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成都市新筑路桥机械股份有限公司
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Priority to CN201510307742.3A priority Critical patent/CN106270321B/en
Publication of CN106270321A publication Critical patent/CN106270321A/en
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Publication of CN106270321B publication Critical patent/CN106270321B/en

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Abstract

The invention discloses a kind of push away to roll the equipment and method of shaping rail, including thrust device 1, heater 2, roll device 3, shaping straightener 4, reheater 5, atomization jetting device 6, above-mentioned each part is sequentially arranged, and sets guiding parts 7 to be used for the movement for guiding steel billet 8 on the equipment.Technology in the present invention is metal in the state of sensing heating reaches rolling temperature, steel billet is promoted with thrust device, rolled by file mould, expansion, aligning, the metal that reheating and spraying treatment reach light rail parameter request pushes away the technology of rolling, it is the mode that extruding metal, rolling, burning optimization on line are combined, the small investment compared with traditional approach, organization of production is flexible, advantage of lower cost, is adapted to medium-sized and small enterprises to use, the combination and structure that the mode and pass of rolling change, similar other kind shaped steel can be produced.

Description

It is a kind of to push away the equipment and method for rolling shaping rail

Technical field

The technical field for rolling into shape is pushed away the present invention relates to a kind of metal, it is specifically a kind of to be used to push away the equipment for rolling shaping rail With method.

Background technology

Electronic light rail car is a kind of environmentally friendly, efficient urban public transport instrument, by domestic and international common concern and increasingly Popularization and application.Its used track has vibration and noise reducing function, and it is to use Large Steel milling train to manufacture the existing mode of this track Group manufacture, is produced with large-scale cross-arranging type or lap siding multi-roll mill or fashion of extrusion, and horizontal, vertical type milling train needs integrally to add blank Heat arrives as-rolled condition, after more to groove rolling, needs to be heat-treated, and aligns, the multiple operation such as finishing, through being finished product after the assay was approved. It is various from finished product process is heated to, invest and old is larger, but be adapted to produce in enormous quantities.Idle, wave is equipped if demand deficiency Take very big.The consumption of fashion of extrusion mould is high, and product size is difficult to control, and cost is than rolling with high.Thus this mode is invested huge Greatly, and need to mass produce just it is economical, be not suitable for medium-sized and small enterprises application and production.

This mode of production of the prior art is roller rest to be driven steel billet so that roller needs to be equipped with motor, speed change Case carrys out speed governing, is accelerated, slowed down according to the coordination between actual conditions and each roller, the speed needs of each roller Match somebody with somebody, to reach this purpose, can make it that the structure of roller is very complicated, motor, gearbox can be set on roller.It is in addition, existing There is technology also to use horizontal press, carry out formed product by the fixed mould of extruding.The mode of this extruding mould is face contact, So that mould quick abrasion so that production cost is higher.

The content of the invention

The mesh of the present invention is to solve the problems, such as the presence of such scheme, it is proposed that it is a kind of push away roll the equipment of shaping rail with Technique.The purpose of the present invention is realized by following technical proposals:

It is a kind of to push away the equipment for rolling shaping rail, including thrust device 1, heater 2, roll device 3, shaping straightener 4th, reheater 5, atomization jetting device 6, above-mentioned each part are sequentially arranged, and set guiding parts 7 to be used to draw on the equipment Lead the movement of steel billet 8.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the roll device 3 includes roller base 9, set Upper roller 10 on roller base 9, lower roll 11, left roller 12, right roller 13 are put, the upper roller 10, lower roll 11, left roller 12, right roller 13 are equal It can be rotated around respective axis, the upper roller 10, lower roll 11, left roller 12, right roller 13 enclose to form rail from upper and lower, left and right direction Road section pass 14.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the shaping straightener 4 includes roll Seat, the upper roller being arranged on roller base, lower roll, left roller, right roller, the upper roller, lower roll, left roller, right roller can be around respective axles Line rotates, and the upper roller, lower roll, left roller, right roller enclose to form rail section pass 14 from upper and lower, left and right direction.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the heater 2, reheater 5 are set Put sensing heating mouth 15.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the number of the roll device 3 for 4 or Person more than 4, the area of the rail section pass 14 in roll device 3 are sequentially reduced.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the track in the shaping straightener 4 is cut The area of face type 14 is identical with the area of the rail section pass 14 in previous roll device 3.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the shaping straightener 4 rolls with previous The distance between roller arrangement 3 is more than the distance between roll device 3.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the thrust device 1 is fluid pressure type or machine Tool formula.

Alternately, it is above-mentioned it is a kind of push away the equipment for rolling shaping rail, the guiding parts 7 is arranged on roll device Between 3, between roll device 3 and shaping straightener 4, the roll device 3, the rail section pass of shaping straightener 4 14 centers are point-blank to ensure that steel billet 8 moves along a straight line.

It is a kind of to push away the equipment and technique for rolling shaping rail,

Step A:Steel billet blank prepares

Step B:Thrust device is by steel billet pushing tow to heating devices heat to rolling temperature

Step C:Ejection rolls

Step D:Shaping, aligning

Step E:Steel billet is again heated to hardening heat by reheater

Step F:Spray liquid mist of quenching.

Compared with prior art, beneficial effects of the present invention:

1st, the transmission that the equipment for rolling shaping rail is pushed away in the present invention is to lean on thrust device, such as thrust machine come before promoting steel billet Enter, after releasing first segment steel billet, thrust portion retraction, add the second section steel billet, thrust portion is advanced, and promotes the second section newly added Steel billet, the second section steel billet promote first segment steel billet before it, and front and rear steel billet is end to end, by the previous section of later section ejection come So that often section steel billet is continuously advanced, the procedure of latter step is carried out, realizes the function of transmission.

2nd, the roller pushed away in the present invention in the equipment for rolling shaping rail mainly realizes the function of the roll compacting shaping of steel billet, does not bear Blame transmission agency.Therefore, compared to more traditional rolling plant that pushes away, motor and speed change need not be equipped with the roller in the present invention Case, the structure of roller itself is enormously simplify, reduce the use of parts, reduce production and the cost used.

3rd, the roller in present device can rotate rotating around respective axis, in the process that steel billet is promoted by thrust machine In, steel billet enters in the rail section pass that roller is formed, and the roller surrounded on four sides carries out roll compacting to the steel billet of entrance, in roll compacting While steel billet, with the advance of steel billet, the roller also rotates around respective axis so that the contact between roller and steel billet It is mobile linear contact lay.Compare traditional static face contact squeeze, the linear contact lay extruding of this movement in the present invention, significantly The direct abrasion of roller is reduced, largely extends the service life of part, reduces the production cost of product.

4th, due to enormously simplify the structure of roller, the complex components such as motor, gearbox are reduced so that each roller system System can be according to the production self assemble of reality, and equipment investment is small, and organization of production is flexible.Large-scale quantization life can be carried out Production, small-scale it can also become privileged production.The production requirement of large enterprise can be met, can also meet medium and small enterprise Production requirement.

Brief description of the drawings

Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:

Fig. 1 is a kind of steel billet structural representation for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 2 is a kind of track finished product sectional view for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 3 is a kind of structural representation for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 4 is a kind of structural representation of the roll device for pushing away the equipment for rolling shaping rail, shaping straightener in the present invention Figure;

Fig. 5 is a kind of roller structure schematic diagram for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 6 is a kind of roller side view for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 7 is a kind of another side view of roller for pushing away the equipment for rolling shaping rail in the present invention;

Fig. 8 pushes away the process chart for rolling into shape rail method to be a kind of in the present invention.

Wherein:1 be thrust device, 2 be heater, 3 be roll device, 4 be shaping straightener, 5 be reheat dress Put, 6 be atomization jetting device, 7 be guiding parts, 8 be steel billet, 9 be roller base, 10 be upper roller, 11 be lower roll, 12 be left roller, 13 it is right roller, 14 be rail section pass, 15 be sensing heating mouth, 16 be upper roller rotary shaft, 17 be upper roller roll body, 18 is upper roller Collars, 19 be lower roll rotary shaft, 20 be lower roll roll body, 21 be left roller rotary shaft, 22 be left roller roll body, 23 be left roller convex platform, 24 it is left roller lower convex platform, 25 be right roller rotary shaft, 26 be right roller roll body, 27 be right roller convex platform, 28 is right roller lower convex platform.

Embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.

All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Speciality and/or step beyond, can in any way combine, unless specifically stated otherwise, can be equivalent by other or there is class Replaced like the alternative features of purpose, i.e. unless specifically stated otherwise, one in a series of equivalent or similar characteristics of each feature Individual embodiment.

As shown in figure 1, the structural representation of steel billet, is forming light rail car track as described in Figure 2 after rolling.

This technology be metal in the state of sensing heating reaches rolling temperature, steel billet is promoted with thrust device, by vertical Row mould rolls, expansion, aligning, and the metal that reheating and spraying treatment reach light rail parameter request pushes away the technology of rolling, and this technology is gold Category extruding, rolling, effective combination of burning optimization on line technology.

The equipment for rolling shaping rail is pushed away as shown in figure 3, a kind of, including it is thrust device 1, heater 2, roll device 3, whole Shape straightener 4, reheater 5, atomizing nozzle device 6, above-mentioned each part are sequentially arranged, and each part can be linear successively Arrange, set guiding parts 7 to be used for the movement for guiding steel billet 8 on the equipment.The thrust device 1 is fluid pressure type or machinery Formula.The heater 2, reheater 5 set sensing heating mouth 15.On blank, steel billet can be according to being actually needed selection Specific track steel billet.

As shown in figure 4, the roll device 3 includes roller base 9, the upper roller 10 being arranged on roller base 9, lower roll 11, a left side Roller 12, right roller 13, the upper roller 10, lower roll 11, left roller 12, right roller 13 can rotate around respective axis, the upper roller 10, under Roller 11, left roller 120, right roller 13 enclose to form rail section pass 14 from upper and lower, left and right direction.

The shaping straightener 4 includes roller base, the upper roller being arranged on roller base, lower roll, left roller, right roller, described Upper roller, lower roll, left roller, right roller can rotate around respective axis, and the upper roller, lower roll, left roller, right roller are from upper and lower, left and right Direction encloses to form rail section pass 14.

As shown in Fig. 5, Fig. 6, Fig. 7, the upper roller 10 includes upper roller rotary shaft 16, upper roller roll body 17, is arranged on upper roller roller The upper roller collars 18 in the outside of body 17, the upper roller rotary shaft 16 are horizontally disposed.The circumferential part of the upper roller roll body 17 and upper roller roller The ring portion of ring 18 is the active component of roll compacting.

The lower roll 11 includes lower roll rotary shaft 19, lower roll roll body 20, and the lower roll rotary shaft 19 is horizontally disposed.Under described The circumferential part of roller roll body 20 is the active component of roll compacting.

The left roller 12 include left roller rotary shaft 21, left roller roll body 22, be arranged on the upside of left roller roll body 22 left roller it is convex Platform 23, the left roller lower convex platform 24 for being arranged on the downside of left roller roll body 22, the left roller rotary shaft 21 be vertically arranged or with endways side To setting at an angle.The left roller roll body 22, left roller convex platform 23, the circumferential part of left roller lower convex platform 24 are the effective of roll compacting Position.

The right roller 13 include right roller rotary shaft 25, right roller roll body 26, be arranged on the upside of right roller roll body 26 right roller it is convex Platform 27, the right roller lower convex platform 28 for being arranged on the downside of right roller roll body 26, the right roller rotary shaft 25 be vertically arranged or with endways side To setting at an angle.The right roller roll body 26, right roller convex platform 27, the circumferential part of right roller lower convex platform 28 are the effective of roll compacting Position.The circumferential part of the right roller convex platform 27 and right roller roll body 26 realizes transition by smooth arc.

The number of the roll device 3 is 3,4 or more than 4, the number of the shaping straightener 4 is 1, 2 or more than 2, the area of the rail section pass 14 in the roll device 3 is sequentially reduced.The shaping straightener The area of rail section pass 14 in 4 is identical with the area of the rail section pass 14 in previous roll device 3.It is described whole The distance between shape straightener 4 and previous roll device 3 are more than the distance between roll device 3.

The guiding parts 7 is arranged between roll device 3, between roll device 3 and shaping straightener 4, if dress There is more than 1 shaping straightener 4 in standby, the guiding parts 7 is additionally arranged between shaping straightener 4.The roll dress The center of rail section pass 14, the i.e. rolling center of 3, shaping straightener 4 is put point-blank to ensure steel billet 8 along straight line Motion.The change of the diameter of guiding parts 7.The diameter of the directive wheel set gradually changes from small to big, to ensure to roll Center, the i.e. center of rail section pass 14, point-blank.

It is a kind of to push away the method for rolling shaping rail, process chart as shown in figure 8,

Step A:Steel billet blank prepares, feeding, and front and rear steel billet is end to end.

Step B:The pushing tow of steel billet 8 to heater 2 is heated to rolling temperature by thrust device 1, and thrust promotes the speed of steel billet 8 Degree is identical with the firing rate of the sensing heating mouth 15 of heater 2.

Step C:The pushing tow of thrust device 1, steel billet 8 roll by roll device.

It is related to track and pushes away the deformation distribution for rolling deformation process:

(A0-A1)/A0*100% is not more than 30%

(A1-A2)/A1*100% is not more than 10%

(A2-A3)/A2*100% is not more than 5%

A0 is steel billet cross-sectional area.

A1 is that a time pushes away rail profile area when rolling.

A2 is that two passages push away rail profile area when rolling.

A3 is that three passages push away rail profile area when rolling.

Rail profile area when A4, A5 are align finishing.

Step D:The pushing tow of thrust device 1, because front and rear steel billet is end to end, the previous section steel billet 8 promotes later section steel Base 8 passes through apparatus for shaping shaping.

(A3-A4)/A3*100% is not more than 1%

A3 is that three passages push away rail profile area when rolling.

Rail profile area when A4, A5 are align finishing.

Step E:The pushing tow of thrust device 1, steel billet 8 are aligned by straightener.

A4=A5

A3 is that three passages push away low floor vehicle rail profile area when rolling.

Low floor vehicle rail profile area when A4, A5 are align finishing.

Step F:Steel billet 8 is again heated to hardening heat by the sensing heating mouth 15 of reheater 5.

Step G:Liquid mist of quenching is sprayed, makes finished surface Quenching Treatment through atomization jetting device 6.

Roll device need to fill appropriate high-temperature lubricant to reduce roll wear during ejection.

Finished product is packed after need to reaching parameters through items detection and shipped.

Often set roll device, which forms the change of pass area, should meet metal rolled deformation coefficient requirement.

When the number of the roll device 3 is three, when the number of the shaping straightener 4 is two, now share Five sets of rollers, the area that first to fourth set of roller surrounds are gradually reduced, and play a part of roll compacting, shaping, and the 4th and the 5th The area that set roller surrounds is consistent, the effect of its main aligning and adjustment.Before the distance between 4th and the 5th set of roller is more than Four sets of rollers the distance between often cover.Guider, such as directive wheel often are set between set roller, helps steel billet to enter and often covers roller Between son.The guider can be arranged on top, bottom or the left and right sides.The initial part of this equipment sets steel billet frame, The completion position sets finished product material frame.This technology feature, few with traditional approach specific investment, organization of production is flexible, and cost is relative It is relatively low.It is adapted to medium-sized and small enterprises to use.Change pass combination and structure, similar other kind shaped steel can be produced.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (8)

1. a kind of push away the equipment for rolling shaping rail, it is characterised in that:Including thrust device(1), heater(2), roll device (3), shaping straightener(4), reheater(5), atomization jetting device(6), above-mentioned each part is sequentially arranged, the equipment Upper setting guiding parts(7)For guiding steel billet(8)Movement, thrust device promote steel billet advance;
The roll device(3)Including roller base(9), be arranged on roller base(9)On upper roller(10), lower roll(11), left roller (12), right roller(13), the upper roller(10), lower roll(11), left roller(12), right roller(13)It can be rotated around respective axis, institute State upper roller(10), lower roll(11), left roller(12), right roller(13)Enclose to form rail section pass from upper and lower, left and right direction (14), roller be responsible for steel billet roll compacting shaping, not responsible transmission;
The shaping straightener(4)Including roller base, the upper roller being arranged on roller base, lower roll, left roller, right roller, it is described on Roller, lower roll, left roller, right roller can rotate around respective axis, and the upper roller, lower roll, left roller, right roller are from upper and lower, left and right side Rail section pass is formed to enclosing(14), roller be responsible for steel billet roll compacting shaping, not responsible transmission.
2. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The heater(2), again plus Thermal(5)Sensing heating mouth is set(15).
3. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The roll device(3) Number is 3,4 or more than 4, roll device(3)Interior rail section pass(14)Area be sequentially reduced.
4. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The shaping straightener(4) Interior rail section pass(14)Area and previous roll device(3)Interior rail section pass(14)Area it is identical.
5. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The shaping straightener(4) With previous roll device(3)The distance between be more than roll device(3)The distance between.
6. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The thrust device(1)For liquid Pressure type is mechanical.
7. a kind of as claimed in claim 1 push away the equipment for rolling shaping rail, it is characterised in that:The guiding parts(7)Set In roll device(3)Between, roll device(3)With shaping straightener(4)Between, the roll device(3), shaping aligning dress Put(4)Rail section pass(14)Center is point-blank to ensure steel billet(8)Move along a straight line.
8. a kind of push away the method for rolling shaping rail, it is characterised in that:This method is using one described in any one of claim 1 to 7 Plant and push away the equipment for rolling shaping rail to realize,
Step A:Steel billet blank prepares
Step B:Thrust device is by steel billet pushing tow to heating devices heat to rolling temperature
Step C:Ejection rolls
Step D:Shaping, aligning
Step E:Steel billet is again heated to hardening heat by reheater
Step F:Spray liquid mist of quenching.
CN201510307742.3A 2015-06-08 2015-06-08 It is a kind of to push away the equipment and method for rolling shaping rail CN106270321B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510307742.3A CN106270321B (en) 2015-06-08 2015-06-08 It is a kind of to push away the equipment and method for rolling shaping rail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510307742.3A CN106270321B (en) 2015-06-08 2015-06-08 It is a kind of to push away the equipment and method for rolling shaping rail

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Publication Number Publication Date
CN106270321A CN106270321A (en) 2017-01-04
CN106270321B true CN106270321B (en) 2018-03-02

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Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165201A (en) * 1979-06-06 1980-12-23 Morio Shinoda Method and apparatus for regenerating old rail
JPS6225042B2 (en) * 1982-06-30 1987-06-01 Nippon Steel Corp
JPH10314803A (en) * 1997-05-22 1998-12-02 Nkk Corp Method for straightening bend of rail
JP4091910B2 (en) * 2001-05-30 2008-05-28 新日本製鐵株式会社 Rail manufacturing method and manufacturing equipment
CN1299843C (en) * 2003-08-27 2007-02-14 鞍钢新轧钢股份有限公司 Short flow path manufacturing method of heavy rail
CN1544169A (en) * 2003-11-21 2004-11-10 王剑波 Variable diameter and variable wall steel pipe rolling mill
CN101214494B (en) * 2007-12-29 2010-12-01 莱芜钢铁集团有限公司 Technique for rolling figured steel for magnetic suspension train rail
CN101259588A (en) * 2008-04-28 2008-09-10 洛阳邦强机械有限公司 Fewer stands longitudinal hot rolling minor diameter thin wall seamless steel tube rolling technique and equipment thereof
CN101792847A (en) * 2009-02-02 2010-08-04 中冶赛迪工程技术股份有限公司 Direct thermal treatment process technology after rolling steel plate
CN101844150B (en) * 2010-05-18 2011-10-05 攀钢集团钢铁钒钛股份有限公司 Universal rolling technology for rails
CN102926297B (en) * 2012-11-06 2016-03-30 莱芜钢铁集团有限公司 A kind of magnetic suspension train rail high dimensional accuracy F shaped steel and manufacturing process thereof
CN103599925A (en) * 2013-12-09 2014-02-26 攀钢集团攀枝花钢钒有限公司 Steel rail rolling method
CN204657364U (en) * 2015-06-08 2015-09-23 成都市新筑路桥机械股份有限公司 A kind ofly push away the equipment rolling shaping rail

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