CN102581242B - Locking device capable of preventing taper change of crystallizer - Google Patents
Locking device capable of preventing taper change of crystallizer Download PDFInfo
- Publication number
- CN102581242B CN102581242B CN201210083027.2A CN201210083027A CN102581242B CN 102581242 B CN102581242 B CN 102581242B CN 201210083027 A CN201210083027 A CN 201210083027A CN 102581242 B CN102581242 B CN 102581242B
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- locking device
- crystallizer
- push rod
- sleeve
- friction
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Abstract
A locking device capable of preventing taper change of a crystallizer comprises crystallizer width adjusting devices, movably connected locking device bodies are sleeved on push rods of the crystallizer width adjusting devices, one end of each locking device body is fixedly connected with a shell of a speed reducer by a bolt and a flange, each locking device body consists of a friction sleeve and a tension sleeve, each friction sleeve is opposite to the corresponding push rod and tightly connected with the peripheral edge of the corresponding tension sleeve, a hollow and sealed cavity is disposed in each friction sleeve, and two oil ports are disposed on each tension sleeve and communicated with the corresponding cavity. The push rods are integrally fastened by the friction sleeves, pressure is balanced and a locking effect is good as compared with an existing split type push rod fastening mode by the aid of friction sleeves, and the locking device is simple, safe and reliable.
Description
Technical field
The present invention relates to one and prevent taper change of crystallizer locking device, is the auxiliary supporting device of the slab caster mould in casting bloom production.
Background technology
Crystallizer is the key equipment that conticaster is produced.Crystallizer inwall is made up of four copper coins, and every copper coin is all arranged on logical water-cooled water tank, forms a reverse taper shape, and upper and lower is all the canister of opening.Before molten steel starts casting, first pack the dummy bar of a similar rolling stock hooking device in crystallizer bottom, lower openings is blocked.Molten steel enters molten steel tundish from the slide gate nozzle of steel ladle, then enters crystallizer through the slide gate nozzle of molten steel tundish.Liquid molten steel forms strand shell after crystallizer is cooling,, by dummy bar, strand is gone out from crystallizer lira during also in liquid state at core.The steel billet of pull-out is through spraying cooling, and core also solidifies gradually.Molten steel constantly goes out from crystallizer lira, forms continuously cast steel base.The last cast steel base that with flame cutting machine, continuous casting billet is cut into again to certain length size.According to the classification of steel billet cross sectional shape, there is the kind such as square billet, slab caster.
Slab caster mould has two broadside copper coins and two narrow limit copper coins, and thickness direction is generally fixing, adopts butterfly spring locking.Width is according to user's requirement, the strand of the different in width specification of can casting.Like this, in the design of crystallizer, will there is width adjusting apparatus.At present, slab caster mould Width adjusting device generally adopts two kinds of mechanical drive mode and the fluid pressure type kinds of drive.
While adopting the crystallizer width regulator of mechanical transmission-type, due to the error of mechanical transmission mechanism processing and manufacturing and mechanical wear generation, the cumulative errors that wearing and tearing between connector and the assemblage gap of other connecting portions etc. produce, molten steel to the pressure at right angle effect of copper plate of crystallizer under, the transmission mechanism being connected with mould at narrow water tank can produce " rollback phenomenon ", between copper plate of crystallizer and strand, having occurred gap, there is change in the tapering of two narrow limit copper coins of crystallizer.We are referred to as " running cone ".Crystallizer " run about cone " can produce pore in continuous casting billet, and crackle affect the quality of strand, when serious, can cause bleed-out accident, and impact is kept the safety in production.For this problem of taper change of crystallizer, the inventor is in the patent application that has front proposed, on the each push rod of Width adjusting device, a sleeve locking apparatus is installed, when after crystallizer width adjustment, with locking device, push rod is locked, so just can not cause because of the accumulated error of the processing and manufacturing error of screw mandrel and screw and mechanical wear the rollback of screw mandrel.This locking device is to have filled two hydraulic oil cavitys on push rod surface, and two cavitys wrap on push rod relatively, makes cavity inner surface distortion locking push rod by the hydraulic oil effect in cavity.Although this structure is convenient to dismounting and change.But because the limit portion of two cavitys is large not as cavity middle part to the pressure of push rod, easily make push rod surface unbalance stress, locking effect is bad, and also easily push rod crimp, the screw mandrel that impact is contained in push rod rotates, and shortens the service life of width adjusting apparatus.
Summary of the invention
The object of this invention is to provide one and prevent taper change of crystallizer locking device, this device can overcome the shortcoming that existing hydraulic locking mechanism exists, and simple in structure, and locking effect is good.
Technical scheme of the present invention is: one prevents taper change of crystallizer locking device, comprise the crystallizer width regulator of mechanical transmission-type, it is characterized in that: on the push rod of crystallizer width regulator, cover has the locking device of flexible connection, locking device one end is connected by the housing of bolt, flange and decelerator, locking device is made up of friction sleeve and expansion sleeve, friction sleeve is relative with push rod, friction sleeve is closely connected with expansion sleeve periphery, in cover, be the cavity of hollow sealing, expansion sleeve is provided with two hydraulic fluid ports that are communicated with cavity.
?on crystallizer width regulator, adopt locking device of the present invention, due to the fastening push rod of friction sleeve monoblock type, better than isostasy, the locking effect of the existing fastening push rod of split type friction sleeve, this mechanism is simple, safe and reliable.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram that the present invention prevents taper change of crystallizer locking device.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the enlarged drawing of locking device part.
1 broadside copper coin, 2 narrow limit copper coins, 3 water tanks, 4 jockeys, 5 bearing pins, 6 push rods, 7 locking devices, 8 flanges, 9 bolts, 10 decelerators, 11 cavitys, 12,13,14 friction sleeves, 15 expansion sleeves in figure.
Detailed description of the invention
Prevent taper change of crystallizer locking device, described crystallizer inwall has two broadside copper coins 1 and two narrow limit copper coins 2, and every copper coin is all arranged on logical water-cooled water tank 3, forms a reverse taper shape, and upper and lower is all the canister of opening.Copper coin 2 outsides, two narrow limits are provided with mechanical transmission-type crystallizer width regulator, and this Width adjusting device adopts screw mandrel, screw transmission.Every side has two groups of transmission mechanisms, and reducing motor drives screw mandrel to rotate, and screw mandrel, screw are arranged in the device of the push rod 6 in decelerator 10, connect by flat key.Along with the rotation of screw mandrel, screw together with push rod 6 just along screw axis to moving horizontally.The head of each push rod 6 has a jockey 4, and these jockey both sides have vertical chute, and two bearing pins 5 are housed on narrow limit water tank 2, inserts respectively in the chute of jockey, moves horizontally with push rod 6, has realized the adjustment of crystallizer width.The present invention installs a locking device 7 by flange 8 on decelerator 10 housings, and flange 8 connects with locking device 7 use bolts 9.Push rod 6 is through the endoporus of locking device 7, and push rod 6 is flexibly connected with locking device 7, can in locking device 7, be free to slide.Locking device 7 is made up of friction sleeve 14 and expansion sleeve 15, and friction sleeve adopted to win with expansion sleeve and coordinates.Friction sleeve 14 is provided with an annular groove, the cavity 11 of a sealing of formation relative to expansion sleeve.On expansion sleeve 15, have two hydraulic fluid ports that are communicated with cavity 12,13, one of them hydraulic fluid port is used for passing in and out high pressure liquid force feed, and another hydraulic fluid port, for getting rid of the air in closed cavity 11, when after air emptying, is closed this mouthful.
Crystallizer completes after width adjustment, injects high pressure liquid force feed at expansion sleeve 14 by a hydraulic fluid port, and high pressure liquid force feed is discharged the air in closed cavity from another hydraulic fluid port.Along with the rising of closed cavity inner high voltage hydraulic fluid pressure, there is strain in friction sleeve 14, with push rod 6 closely connected to together with.In the time that push rod 6 is subject to axial thrust that molten steel tension force produces, friction sleeve 14 stops push rod 6 rollbacks with the frictional force that push rod 6 produces, thereby has prevented taper change of crystallizer.
Claims (1)
1. prevent taper change of crystallizer locking device, it is characterized in that: crystallizer inwall is provided with two broadside copper coins and two narrow limit copper coins, on the water tank being connected with two narrow limit copper coins, two bearing pins are housed, the head of push rod is provided with jockey, jockey both sides have vertical chute, two bearing pins are inserted in respectively in chute, on push rod, cover has the locking device of flexible connection, locking device is made up of friction sleeve and expansion sleeve, friction sleeve is relative with push rod, friction sleeve is closely connected with expansion sleeve periphery, the cavity sealing for hollow in cover, expansion sleeve is provided with two hydraulic fluid ports that are communicated with cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083027.2A CN102581242B (en) | 2012-03-27 | 2012-03-27 | Locking device capable of preventing taper change of crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083027.2A CN102581242B (en) | 2012-03-27 | 2012-03-27 | Locking device capable of preventing taper change of crystallizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102581242A CN102581242A (en) | 2012-07-18 |
| CN102581242B true CN102581242B (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210083027.2A Expired - Fee Related CN102581242B (en) | 2012-03-27 | 2012-03-27 | Locking device capable of preventing taper change of crystallizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102581242B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174824B (en) * | 2014-08-29 | 2016-07-13 | 王志敏 | Slab caster mould on-line width adjustment system |
| CN104801683A (en) * | 2015-04-17 | 2015-07-29 | 钢铁研究总院 | Narrow-side copper plate for reducing on-line width regulating resistance of plate blank crystallizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826042Y (en) * | 2005-07-19 | 2006-10-11 | 西安重型机械研究所 | Mechanically locked hydraulic cylinder |
| CN1942275A (en) * | 2004-04-06 | 2007-04-04 | 雄克有限公司 | Expansion chucking device |
| CN101012857A (en) * | 2007-01-24 | 2007-08-08 | 大连光洋科技工程有限公司 | Hydraulic expanding sleeve locking mechanism |
| CN200999814Y (en) * | 2007-01-24 | 2008-01-02 | 大连光洋科技工程有限公司 | Hydraulic rolling expansible cover brake mechanism |
| CN201220280Y (en) * | 2008-05-23 | 2009-04-15 | 袁志成 | Carriage rack |
-
2012
- 2012-03-27 CN CN201210083027.2A patent/CN102581242B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942275A (en) * | 2004-04-06 | 2007-04-04 | 雄克有限公司 | Expansion chucking device |
| CN2826042Y (en) * | 2005-07-19 | 2006-10-11 | 西安重型机械研究所 | Mechanically locked hydraulic cylinder |
| CN101012857A (en) * | 2007-01-24 | 2007-08-08 | 大连光洋科技工程有限公司 | Hydraulic expanding sleeve locking mechanism |
| CN200999814Y (en) * | 2007-01-24 | 2008-01-02 | 大连光洋科技工程有限公司 | Hydraulic rolling expansible cover brake mechanism |
| CN201220280Y (en) * | 2008-05-23 | 2009-04-15 | 袁志成 | Carriage rack |
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| Publication number | Publication date |
|---|---|
| CN102581242A (en) | 2012-07-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG ZHIMIN Free format text: FORMER OWNER: JILIN HENGDONG PETROLEUM DRILLING FITTINGS CO., LTD. Effective date: 20150616 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150616 Address after: 114008 Anshan province Liaoning City Tiedong road Conrad Chinese Garden Building 1, unit 1, Room 202 Patentee after: Wang Zhimin Address before: 132000 Jilin city of Jilin province Changyi District liberation road Dulwich garden 22-1-101 Patentee before: Jilin Hengdong Oil Drilling Accessories Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |