CN202539504U - Flexible dummy bar - Google Patents
Flexible dummy bar Download PDFInfo
- Publication number
- CN202539504U CN202539504U CN 201120533571 CN201120533571U CN202539504U CN 202539504 U CN202539504 U CN 202539504U CN 201120533571 CN201120533571 CN 201120533571 CN 201120533571 U CN201120533571 U CN 201120533571U CN 202539504 U CN202539504 U CN 202539504U
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- Prior art keywords
- dummy bar
- flexible dummy
- flexible
- clamping
- fan
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Abstract
The utility model discloses a flexible dummy bar. The flexible dummy bar (1) is clamped and conveyed by a straightening and withdrawal system (2) of a continuous casting machine. The straightening and withdrawal system comprises a plurality of connected segments (3) and a transmission device. Each segment comprises upper and lower rows of rollers which are opposite and spaced. Each of the nth (n is more than or equal to 1) segment and the segments after the nth segment along the conveying direction of the flexible dummy bar comprises a pair of clamping and conveying rollers (4) opposite to the middle part of the segment. The clamping and conveying rollers are used for clamping and conveying the flexible dummy bar. At least a pairs of clamping and conveying rollers are required to clamp the flexible dummy bar to ensure that the flexible dummy bar cannot slide down in a casting process. Moreover, when at a cast-on position, the flexible dummy bar passes through at least a+1 segments with the clamping and conveying rollers. The flexible dummy bar is ensured to be clamped and conveyed by at least a pairs of clamping rollers and not to slide down in the casting process, so that the phenomenon that the normal clamping and conveying state of the flexible dummy bar cannot be kept and the flexible dummy bar slides down when individual clamping and conveying rollers fail is avoided.
Description
Technical field
The utility model relates to a kind of member of continuous casting installation for casting, relates in particular to a kind of flexible dummy bar.
Background technology
Continuous casting is a kind of iron and steel continuous casting process; The roughly process of continuous casting is that qualified molten steel is injected pans; Liquid molten steel injects crystallizer by the mouth of a river under the pans; Molten steel forms base shell that the outside that requires is a section configuration, innerly be the strand of liquid core through indirect cooling in crystallizer, through the gentle direct pressure of cooling water of crystallizer foot roll section, support guide section and the two cold fan-shaped section of crystallizer lower end be cooled to strand when sending out last pair of rollers of fan-shaped section inside liquid core solidify fully, in the continuous casting billet forming process; Dummy bar head is at first accepted molten steel and is promoted as the false end of crystallizer and solidifies; Throwing power is delivered to newborn continuous casting billet by dummy bar, and after dummy bar was through the fan-shaped section with straightening function, newborn continuous casting billet replaced dummy bar and transmits throwing power to the continuous casting billet of follow-up formation.
Wherein, The general dummy bar that uses can be divided into rigid dummy bar and flexible dummy bar; Wherein flexible dummy bar is generally made chain type, and is hinged and have seam preventing its counter motion by carrier bar, and dummy bar also can be divided into dress dummy bar and dress dummy bar down by mounting means.Last dress dummy bar is to send into the crystallizer through the crystallizer top from teeming stage, and following dress dummy bar is to be sent in the crystallizer by the crystallizer below through ejection rollgang, two cold fan-shaped section, support guide section, crystallizer foot roll section.
Fig. 1 opens the sketch map when watering the position for the flexible dummy bar according to prior art is in, adorning flexible dummy bar below 1 below in conjunction with accompanying drawing is that example describes the mechanism of dummy bar in casting.As shown in Figure 1; Straightening system 2 comprises fan-shaped section 3 and the transmission device that multistage is connected; Fan-shaped section 3 is made up of correspondence and two rows roller at interval; Include a pair of pinch roll 4 of the correspondence that is positioned at these fan-shaped section 3 middle parts along the n (n >=1) of flexible dummy bar 1 direction of transfer section and said fan-shaped section 3 afterwards; The corresponding also roller of the centre of the two rows roller at interval that promptly is positioned at above-mentioned fan-shaped section 3 is a pinch roll 4, and to be used for clamping and transmission flexible dummy bar 1 and continuous casting billet, 4 liang of side shaft holders of the pinch roll of fan-shaped section 3 are connected on the oil cylinder piston bar; Oil cylinder is fixed on the framework of fan-shaped section 3; Transfer the pressure on 4 liang of side shaft holders of pinch roll through the oil cylinder piston bar, be applied on dummy bar or the continuous casting billet, and then produce frictional force pulling dummy bar or continuous casting billet by pinch roll through actuator drives thereby transfer the pressure to pinch roll through bearing block again.In casting process; Before casting; Straightening system 2 moves up flexible dummy bar 1 under the effect of hydraulic cylinder; The dummy head of flexible dummy bar 16 is inserted about crystallizer 500mm, and stopping up at the false end that crystallizer is formed on the crystallizer bottom, flexible dummy bar 1 was in opening shown in Fig. 1 and watered the position this moment; The molten steel rapid solidification and the dummy head 6 that inject at first in the crystallizer fuse, and continuously on connecting gear 2, transmit and pull out fan-shaped section at following flexible dummy bar 1 with continuous casting billet of the transmission function of friction of pinch roll 4.
Open water before; Flexible dummy bar 1 is remained on to open by pinch roll 4 and waters the position; The sliding force that the brake force of pinch roll 4 generations this moment must produce greater than the weight of flexible dummy bar 1; And along with further carrying out of cast, the brake force that pinch roll 4 produces must be greater than the gross weight of flexible dummy bar 1 with the strand that produces.In conticaster according to prior art; Flexible dummy bar 1 needs a can keep flexible dummy bar 1 to be in the state that normally pinches to (being generally 3 pairs) pinch roll 4 clampings at least and then does not glide; And the flexible dummy bar according to prior art has the length to pinch roll 4 couplings with a; Promptly open when watering the position when flexible dummy bar 1 is in, this flexible dummy bar 1 has the fan-shaped section 3 of pinch roll 4 through a section.
But; When fault that transmission device or pinch roll occur; For example above-mentioned a is to pinching any one pinch roll in the roller because motor or the reductor failover is inoperative, catcher backlash between universal shaft coupling device becomes big, catcher is loosening or come off and oil cylinder decompression or leakage of oil etc. and the malfunctioning pinch roll 4 not enough a of clamping flexible dummy bar 1 that all can make are right; To cause heavy flexible dummy bar 1 can't keep normally pinching state like this; And then in the straightening system, glide suddenly and continue horizontal slip until at a distance, possibly cause the damage and the casualties of each part of appliance like this, and have a strong impact on carrying out smoothly of production.
The utility model content
The utility model provides a kind of flexible dummy bar; This flexible dummy bar needs a can in casting cycle, keep not gliding to said pinch roll clamping at least; And open when watering the position through a+1 section fan-shaped section at least when this flexible dummy bar is in, so this flexible dummy bar can avoid causing flexible dummy bar can't keep normally owing to indivedual pinch rolls are malfunctioning, and the state of pinching glides.
This use is novel to provide a kind of flexible dummy bar; This flexible dummy bar is by the clamping of straightening system and the transmission of conticaster; Said straightening system comprises fan-shaped section and the transmission device that multistage is connected, and said fan-shaped section comprises corresponding and two rows roller at interval, a pair of pinch roll that includes the correspondence that is positioned at this fan-shaped section middle part along the n section and the said fan-shaped section afterwards of said flexible dummy bar direction of transfer; Said pinch roll is used for clamping and transmits said flexible dummy bar; Said flexible dummy bar needs a can keep not gliding to said pinch roll clamping at least, and, when being in, opens when watering the position said flexible dummy bar; This flexible dummy bar has the said fan-shaped section of said pinch roll through a+1 section at least, and wherein n and a are the natural number greater than 0.
Preferably, said flexible dummy bar needs 3 pairs of said pinch roll clampings can keep not gliding at least.
Preferably, when this flexible dummy bar is in said opening when watering the position, this flexible dummy bar is through at least 4 sections said fan-shaped section that have said pinch roll.
Preferably, when this flexible dummy bar is in said opening when watering the position, this flexible dummy bar is through 5 sections said fan-shaped section that have said pinch roll.
The flexible dummy bar of the utility model has long length; This flexible dummy bar needs a can in casting cycle, keep not gliding to said pinch roll clamping at least; And deserving flexible dummy bar is in to open when watering the position through a+1 section at least and has the fan-shaped section of pinch roll; Thereby clamping remains on the state that normally pinches to pinch roll by a at least to guarantee flexible dummy bar; Therefore, the flexible dummy bar of the utility model can be avoided owing to indivedual malfunctioning flexible dummy bars that cause of pinch roll can't remain on the phenomenon that normally pinches state and then downslide.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 opens the sketch map when watering the position for the flexible dummy bar according to prior art is in; And
Fig. 2 opens the sketch map when watering the position for the flexible dummy bar according to the preferred implementation of the utility model is in.
Description of reference numerals
1 flexible dummy bar 2 straightening systems according to the utility model
3 fan-shaped section, 4 pinch rolls
5 flexible dummy bar 6 dummy heads according to prior art
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
In the present invention; For the convenience of describing, used some nouns of locality, for example " two rows " etc. are usually all to direction shown in the drawings; Or to vertically or each parts mutual alignment relationship description word of gravity direction; And, need to prove that n and a are the natural number greater than 0.
Fig. 1 is for being in the sketch map of opening when watering the position according to the flexible dummy bar of prior art, Fig. 2 opens the sketch map when watering the position for the flexible dummy bar according to the preferred implementation of the utility model is in.
As shown in Figure 2; Flexible dummy bar 1 according to the utility model also is that straightening system 2 comprises fan-shaped section 3 and the transmission device that multistage is connected by 2 clampings of straightening system and the transmission of conticaster, and fan-shaped section 3 is made up of correspondence and two rows roller at interval; And as shown in Figure 2; Two row's rollers of these fan-shaped section 3 are connected to each other and form roller track smoothly, so that flexible dummy bar can transmit in this roller track, wherein; Include a pair of pinch roll 4 of the correspondence that is positioned at these fan-shaped section 3 middle parts along the n (n >=1) of flexible dummy bar 1 direction of transfer section and said fan-shaped section 3 afterwards; The roller that promptly is positioned at the centre of the corresponding of said fan-shaped section 3 and two rows roller at interval is a pinch roll 4, being used for clamping and transmitting flexible dummy bar 1 and continuous casting billet, and transmits flexible dummy bar 1 or continuous casting billet; In casting cycle; Said flexible dummy bar 1 needs a at least, and 4 clampings can remain on normal clamp position (promptly keeping static by pinch roll 4 clampings does not glide or stable transmission the and the states that do not slide relatively with pinch roll 4) to pinch roll, and promptly a chucking power that pinch roll 4 is produced could be greater than the weight of the strand of the weight of flexible dummy bar 1 and follow-up generation at least, and can know with Fig. 2 through comparison diagram 1; Flexible dummy bar 1 more existing flexible dummy bar 5 according to the utility model has longer length; Particularly, open when watering the position when flexible dummy bar 1 is in, this flexible dummy bar 1 has the fan-shaped section 3 of pinch roll 4 through a+1 section at least.
In actual production, usually, the flexible dummy bar 1 of conticaster needs at least 3 pairs of pinch roll 4 clampings can keep not gliding.Therefore, preferably, open when watering the position when the flexible dummy bar 1 according to the utility model is in, this flexible dummy bar 1 is through at least 4 sections fan-shaped section 3 with pinch roll 4.
And; Flexible dummy bar 1 is good more by the effect that 4 maintenances of more pinch rolls then are held flexible dummy bar 1; Promptly open when watering the position when flexible dummy bar 1 is in, the effect that is held of this flexible dummy bar 1 is good more more at most for the fan-shaped section with pinch roll 43 of flexible dummy bar 1 process.But; Along with the length of flexible dummy bar 1 prolongs, the requirement of length that other part of conticaster is for example promoted hoisting mechanism and the casting platform of flexible dummy bar 1 improves, therefore; Take all factors into consideration reasonability to other partial design of the grip of flexible dummy bar 1 and conticaster; Preferably, when making flexible dummy bar 1 be in said obstruction crystallizer position, flexible dummy bar 1 is through at least 5 sections fan-shaped section 3 with pinch roll 4; Facts have proved that flexible dummy bar 1 can keep more stable delivery status in this case.
As stated; The flexible dummy bar of the utility model has long length; This flexible dummy bar needs a can in casting cycle, keep not gliding to said pinch roll clamping at least; And deserving flexible dummy bar is in to open when watering the position through a+1 section at least and has the fan-shaped section 3 of pinch roll 4; Thereby clamping remains on the state that normally pinches to pinch roll by a at least to guarantee flexible dummy bar; Therefore, the flexible dummy bar of the utility model can be avoided owing to indivedual malfunctioning flexible dummy bars that cause of pinch roll can't remain on the phenomenon that normally pinches state and then downslide, has avoided causing heavy flexible dummy bar 1 can't keep the state that normally pinches like this and then in the straightening system, glides fast suddenly and cause the damage, casualties of each part of appliance and to producing the influence of carrying out smoothly.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned embodiment; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model, these simple variant all belong to the protection domain of the utility model.In addition; Each concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner; As long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (4)
1. flexible dummy bar; This flexible dummy bar (1) is by (2) clamping of straightening system and the transmission of conticaster; Said straightening system (2) comprises fan-shaped section (3) and the transmission device that multistage is connected; Said fan-shaped section (3) comprises corresponding and two rows roller at interval; The n section of edge said flexible dummy bar (1) direction of transfer and said fan-shaped section (3) afterwards include a pair of pinch roll (4) of the correspondence that is positioned at this fan-shaped section (3) middle part, and said pinch roll (4) is used for clamping and transmits said flexible dummy bar (1), and said flexible dummy bar (1) needs a at least, and clamping can keep not gliding to said pinch roll (4); It is characterized in that; Open when watering the position when said flexible dummy bar (1) is in, this flexible dummy bar (1) has the said fan-shaped section (3) of said pinch roll (4) through a+1 section at least, and wherein n and a are the natural number greater than 0.
2. flexible dummy bar according to claim 1 is characterized in that, said flexible dummy bar (1) needs 3 pairs of said pinch rolls (4) clamping can keep not gliding at least.
3. flexible dummy bar according to claim 2 is characterized in that, when this flexible dummy bar (1) is in said opening when watering the position, this flexible dummy bar (1) is through at least 4 sections said fan-shaped section (3) that have said pinch roll (4).
4. flexible dummy bar according to claim 3 is characterized in that, when this flexible dummy bar (1) is in said opening when watering the position, this flexible dummy bar (1) is through 5 sections said fan-shaped section (3) that have said pinch roll (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533571 CN202539504U (en) | 2011-12-19 | 2011-12-19 | Flexible dummy bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533571 CN202539504U (en) | 2011-12-19 | 2011-12-19 | Flexible dummy bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202539504U true CN202539504U (en) | 2012-11-21 |
Family
ID=47160194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120533571 Expired - Fee Related CN202539504U (en) | 2011-12-19 | 2011-12-19 | Flexible dummy bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202539504U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506587A (en) * | 2013-01-10 | 2014-01-15 | 番禺珠江钢管（连云港）有限公司 | Dummy bar upper level loading device of single-flow and dual-flow slab caster |
| CN113305278A (en) * | 2021-05-07 | 2021-08-27 | 中国重型机械研究院股份公司 | Control device and method for no-slip pulling of dummy bar during starting |
-
2011
- 2011-12-19 CN CN 201120533571 patent/CN202539504U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506587A (en) * | 2013-01-10 | 2014-01-15 | 番禺珠江钢管（连云港）有限公司 | Dummy bar upper level loading device of single-flow and dual-flow slab caster |
| CN103506587B (en) * | 2013-01-10 | 2015-04-22 | 番禺珠江钢管（连云港）有限公司 | Dummy bar upper level loading device of single-flow and dual-flow slab caster |
| CN113305278A (en) * | 2021-05-07 | 2021-08-27 | 中国重型机械研究院股份公司 | Control device and method for no-slip pulling of dummy bar during starting |
| CN113305278B (en) * | 2021-05-07 | 2022-07-22 | 中国重型机械研究院股份公司 | Control device and method for no-slip pulling of dummy bar during starting |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20161219 |