CN102990019A - Crystallizer-oscillated eccentric mechanism without radial clearance - Google Patents
Crystallizer-oscillated eccentric mechanism without radial clearance Download PDFInfo
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- CN102990019A CN102990019A CN2012105065304A CN201210506530A CN102990019A CN 102990019 A CN102990019 A CN 102990019A CN 2012105065304 A CN2012105065304 A CN 2012105065304A CN 201210506530 A CN201210506530 A CN 201210506530A CN 102990019 A CN102990019 A CN 102990019A
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Abstract
The invention discloses a crystallizer-oscillated eccentric mechanism without a radial clearance, and relates to continuous casting equipment. The eccentric mechanism is characterized in that a matching part of an eccentric shaft and an eccentric sleeve is formed by connecting large cylindrical surfaces, circular table surfaces and small cylindrical surfaces; two disc bodies with the equal external diameter are arranged on the eccentric shaft and the eccentric sleeve respectively and are connected with the large cylindrical surfaces of the eccentric shaft and the eccentric sleeve respectively; a key groove is formed in the circumference of each disc body respectively; keys are mounted in the aligned key grooves; and the two disc bodies are fastened together through a clamping ring. According to the invention, the circular table surfaces are matched without a clearance, so that the radial displacement of the eccentric shaft and the eccentric sleeve is avoided; and therefore the defects of radial oscillation and radial abrasion generated between the eccentric shaft and the eccentric sleeve due to the fact that a mounting clearance is preformed on the existing eccentric mechanism is overcome. In addition, the clearance matching is adopted by the cylindrical surfaces of the eccentric shaft and the eccentric sleeve, so that the eccentric mechanism is mounted and disassembled simply and easily, and the eccentric distance of the eccentric mechanism is also regulated simply and easily. The eccentric mechanism provided by the invention has the advantages of simple structure, long service life, stability in running and high oscillation precision.
Description
Technical field
The present invention relates to continuous casting equipment, especially relate to a kind of conticaster crystallizer vibrating eccentric stiffener.
Background technology
In continuous casting is produced, to pull out from crystallizer smoothly in order to make steel billet, crystallizer will be done up and down reciprocatingly vibration.Existing mechanical type vibration generating arrangement generally is by motor, decelerator or variable moderator, eccentric stiffener and linkage form, wherein eccentric stiffener is vibrative critical component, generally formed by eccentric shaft and eccentric bushing, the cooperation of these two parts with fixedly be that eccentric stiffener is being installed, the Focal point and difficult point in operation and the adjustment eccentric throw process.Continuous casting manufacturing technique requires the amplitude of vibrating mechanism to adjust according to different steel grades and pulling rate, therefore the relative position that will adjust eccentric shaft and eccentric bushing is controlled the eccentric throw of eccentric stiffener, to realize different amplitudes, this just requires that certain gap is arranged between eccentric shaft and the eccentric bushing, they are relatively rotated, thereby conveniently adjust accurately eccentric throw.But because the existence in gap, mechanism is in operation process, there is radial clearance between eccentric bushing and the eccentric shaft, thereby affect continuous cast mold vibration precision and produce the mechanism vibrations impact phenomenon, eccentric bushing and eccentric shaft also produce wearing and tearing simultaneously, to a certain degree just can not guarantee the eccentric throw of fixing when may wear to, along with the wearing and tearing aggravation, gap between eccentric shaft and the eccentric bushing increases, cause whole vibrational system to produce huge impact and noise, even damage, will have a strong impact on like this quality of strand, need to change eccentric stiffener, and the high operating rate meeting of conticaster be so that eccentric stiffener is easy to damage, change continually eccentric stiffener and will have a strong impact on carrying out smoothly of production, cause huge economic loss to enterprise.If but eccentric shaft and eccentric bushing are interference fit, not only can make assembling, dismounting and the eccentric throw adjustment of eccentric stiffener become very difficult, also can because of long-time use, cause eccentric shaft and eccentric bushing rust dead, so that the eccentric throw of eccentric stiffener is non-adjustable.The outer surface of existing eccentric shaft and the inner surface of eccentric bushing are cylinder, and its assembling form mainly contains following several.
Chinese patent ZL200720045858.5 discloses a kind of billet continuous casting vibration table eccentric mechanism, on the eccentric shaft in this mechanism and the eccentric bushing inner surface one or more groups keyway is set, and eccentric shaft and eccentric bushing are fixed connection by key.This mode requires key and keyway to closely cooperate, the accurate eccentric throw to obtain stable, eccentric adjustment apart from the time, key need to be beaten taking-up, so that the adjustment of eccentric throw is very difficult, in case and the keyway of key and installation site weares and teares, and can cause larger elliptical gear, affects the production of conticaster.
Chinese patent 200920214004.4 discloses a kind of conticaster crystallizer eccentric, this device is equipped with eccentric bushing, datum tooth cover and adjusts the tooth cover at eccentric shaft, adjusting the stepped tooth of tooth cover and the stepped tooth of datum tooth cover cooperates, the rectangular teeth of datum tooth cover and the rectangular teeth of eccentric bushing cooperate, datum tooth cover inner surface and eccentric shaft have keyway, be fixedly connected by key between them, rotating eccentric sleeve and datum tooth cover can be adjusted the eccentric throw of eccentric.This device has improved the degree of regulation of eccentric throw, easy to adjust with respect to the eccentric that key connects, but the gap between eccentric bushing, adjustment tooth cover and the eccentric shaft is still inevitable, and mechanism's each parts in running can produce relative motion, thereby cause wear-out failure.
Chinese patent 200910261475.5 discloses a kind of amplitude control method and structure of mechanical vibrator, and this device is comprised of an eccentric shaft and at least one eccentric bushing, and eccentric shaft and eccentric bushing are fixed by key or bolt.When eccentric shaft and eccentric bushing fixedly the time, have a plurality of keyways in eccentric shaft by key, the eccentric bushing inner surface has a keyway, will be fixed connection by key after the alignment of the keyway on eccentric shaft and the eccentric bushing; When eccentric shaft and eccentric bushing are fixedly connected with bolt, have the radial bolts hole at eccentric bushing, determine the relative position of eccentric shaft and eccentric bushing after, with bolt tightening, fix the relative position of the two.The common shortcoming of these two kinds of connected modes is adjustment difficulties, is not easy to dismantle.
Also has in addition a kind of eccentric stiffener that is formed by eccentric shaft and eccentric bushing, its eccentric bushing two ends indentation, after eccentric bushing is installed on the eccentric shaft, the two ends of eccentric bushing cooperate respectively two fixed covers, and these two fixed cover inner surfaces have a keyway that runs through, and cooperate with key on the eccentric shaft, can slide along eccentric shaft, but not rotatable, and an end that is connected with eccentric bushing is with corresponding sawtooth, thus be connected with eccentric bushing.The eccentric shaft two ends have screw thread, fix with nut respectively in the outer end of two fixed covers, and eccentric shaft and eccentric bushing are fixedly connected like this.When eccentric adjustment apart from the time, unclamp nut, separately fixed cover and eccentric bushing, then the rotating eccentricity cover makes fixed cover again cooperate with eccentric bushing to correct position, fixes with nut, can make eccentric stiffener obtain new eccentric throw.In order to be easy to that eccentric shaft and eccentric bushing are relatively rotated with the eccentric adjustment distance, this connecting mode also can leave the gap between eccentric shaft and eccentric bushing.So eccentric shaft and eccentric bushing inner surface are cylindrical eccentric stiffener, inevitably affect the mold oscillation precision and produce wearing and tearing because of excesssive gap, perhaps be difficult for the eccentric adjustment distance because the gap is too small.
Summary of the invention
The object of the invention is to not only thoroughly eliminate eccentric shaft and eccentric bushing radial vibration gap and the wear phenomenon in motion process by new mating surface, improve the mold oscillation precision, prolong the eccentric stiffener working life, and make it be easy to assembling, dismounting and eccentric adjustment distance.
For achieving the above object, technical scheme provided by the invention is as follows: a kind of mold oscillation eccentric stiffener without radial clearance, comprise eccentric shaft and eccentric bushing, it is characterized in that: the mating part of this eccentric shaft and eccentric bushing is successively by the great circle cylinder, round table surface and small cylindrical surface are formed by connecting, separately great circle cylinder on eccentric shaft and the eccentric bushing, the end face diameter of round table surface and small cylindrical surface junction equates, eccentric shaft is identical with round table surface cone angle on the eccentric bushing, two round table surface places are that gapless cooperates, eccentric shaft and eccentric bushing are matched in clearance at great circle cylinder and small cylindrical surface place, the protruding disk body that each own external diameter equates on eccentric shaft and the eccentric bushing, two disk bodies link to each other with great circle cylinder on the eccentric bushing with eccentric shaft respectively, and on disk body circumference separately, all have keyway, key is installed in the keyway of amphidisc alignment, and two disk bodies tighten together by clamp ring; The cylindrical dead in line of protruding disk body on eccentric shaft great circle cylinder, round table surface, small cylindrical surface and the eccentric shaft, this axis is parallel with main shaft and have an eccentric throw; The cylindrical dead in line of the inboard great circle cylinder of eccentric bushing, round table surface, the protruding disk body of small cylindrical surface and the eccentric bushing outside, this axis and the eccentric bushing outside are parallel and have an eccentric throw except protruding disk body axis partly.
Round table surface cone angle on this eccentric stiffener eccentric shaft and the eccentric bushing is 8 °～30 °.
This eccentric stiffener can have at the circumference of eccentric bushing disk body a keyway, circumference at the eccentric shaft disk body has a plurality of keyways, keyway is measure-alike on two disk bodies, has at least 2 equally distributed unthreaded holes at the circumference of described eccentric shaft and eccentric shaft disk body.
This eccentric stiffener can also axially have at least 2 equally distributed tapped through holes at the eccentric bushing disk body, is separately installed with bolt.
The described clamp ring of this eccentric stiffener is bolted by two semicircles, and it is trapezoidal groove that inside has cross section, and the mating part cross section of eccentric shaft and eccentric bushing disk body and clamp ring is trapezoidal, and the inner trapezoidal groove two sides angle β of clamp ring is 8 °～30 °.
In addition, a semi-circular portions of the described clamp ring of this eccentric stiffener has a keyway on the footpath within it, cooperates with key, have a stepped hole that is used for construction bolt at the keyway center position, have in the heart a screwed hole that is connected with bolt in the described key.
Eccentric stiffener of the present invention, the mating surface that has adopted great circle cylinder, round table surface and small cylindrical surface to connect, in the mechanical operation process, the round table surface place is that gapless cooperates, and has thoroughly eliminated the radial clearance between eccentric shaft and the eccentric bushing.Place, the face of cylinder adopts matched in clearance, so that eccentric stiffener can be installed easily, dismantles and debug.Key on the disk body of two projections and clamp ring have limited relatively rotating of eccentric shaft and eccentric bushing, have guaranteed constant eccentric throw.In addition, because it is trapezoidal groove that clamp ring inside has cross section, the cross section of two disk bodies and clamp ring mating part is trapezoidal, thereby make two disk bodies after fixing with snap ring, leave less gap between its apparent surface, so just can guarantee to closely cooperate between eccentric shaft and eccentric bushing two round table surface.At the circumference of two protruding disk bodies keyway and the unthreaded hole of some are set, and at the disk body of eccentric shaft connecting bolt are set, not only eccentric adjustment distance easily also is convenient to simultaneously the dismounting of eccentric bushing.
In sum, the present invention not only can thoroughly eliminate eccentric shaft and eccentric bushing radial vibration gap and the wear phenomenon in motion process at the mating surface unlike the prior art of eccentric shaft and the employing of eccentric bushing auxiliary section branch, prolong the eccentric stiffener working life, and owing on eccentric shaft and eccentric bushing, be provided with respectively the equal protruding disk body of its external diameter and adopt the clamp ring fixed form, thereby make whole mechanism be easy to assembling and dismounting, and eccentric adjustment distance easily.In addition, the present invention also have simple in structure, operate steadily, vibrate the precision height, be convenient to the characteristics such as manufacturing.
Description of drawings
The present invention has accompanying drawing 6 width of cloth, wherein:
Fig. 1 is the A-A cutaway view of Fig. 2;
Fig. 2 is the side view of eccentric shaft among the present invention;
Fig. 3 is the B-B cutaway view of Fig. 4;
Fig. 4 is the side view of eccentric bushing among the present invention;
Fig. 5 is the installation diagram of eccentric stiffener of the present invention;
Fig. 6 is the cutaway view of clamp ring among the present invention.
Among the figure: the 1-face of cylinder, the 2-face of cylinder, 3-eccentric shaft disk body, the 4-face of cylinder, 5,5 ＇-great circle cylinder, 6,6 ＇-round table surface, 7,7 ＇-small cylindrical surface, 8-eccentric bushing disk body, 9-eccentric shaft, the 10-key, 11-clamp ring, 12-eccentric bushing, the 13-bolt, 14-bolt, 15-connecting rod, the cone angle of α-round table surface, the inner trapezoidal groove of β-clamp ring two sides angle.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further details.
Fig. 1 has provided the structure of eccentric shaft 9, the face of cylinder 1 links to each other with reductor by shaft coupling, bearing is installed at the face of cylinder 2 and 4 places, bearing links to each other with base, be used for supporting and fixing eccentric stiffener, the mating part of eccentric shaft 9 is by great circle cylinder 5, round table surface 6 and small cylindrical surface 7 connect to form successively, each convolution face equates at the end face diameter of junction, the cone angle of round table surface 6 is 8 °～30 °, be conducive to like this eccentric shaft 9 and eccentric bushing 12 fastening and dismounting, rotation when claiming eccentric shaft 9 work, the axis that is eccentric shaft 9 spindle noses is main shaft, eccentric shaft great circle cylinder 5, round table surface 6, the cylindrical dead in line of protruding disk body 3 on small cylindrical surface 7 and the eccentric shaft 9, this axis is parallel with main shaft and have an eccentric throw.
In Fig. 3, eccentric bushing 12 inside are by great circle cylinder 5 ＇, and round table surface 6 ＇ and small cylindrical surface 7 ＇ form, and each convolution face equates at the end face diameter of junction.Round table surface 6 is identical with the tapering of 6 ＇, 5,5 ＇ and 7,7 ＇ places are matched in clearance on the face of cylinder for eccentric shaft 9 and eccentric bushing 12, so eccentric bushing 12 can rotate with the eccentric adjustment distance at eccentric shaft 9 easily, it is parallel and have an eccentric throw that the cylindrical dead in line of eccentric bushing 12 inboard great circle cylinder 5 ＇, round table surface 6 ＇, small cylindrical surface 7 ＇ and eccentric bushing 12 outsides projection disk body 8, this axis and eccentric bushing 12 outsides remove the axis of protruding disk body 8 parts.
In Fig. 2 and Fig. 4, as preferred version of the present invention, have 4 keyways on the circumference of disk body 3, have 1 keyway on the circumference of disk body 8, eccentric bushing 12 is installed on the eccentric shaft 9, keyway on the disk body 8 when 4 keyways on the disk body 3 align, can obtain 4 predefined eccentric throws respectively.
After eccentric bushing 12 was installed on the eccentric shaft 9, eccentric throw was according to actual needs determined the keyway that will align on the disk body 3.For the ease of rotating eccentric sleeve 12 on eccentric shaft 9, with the keyway on the adjusting disk body 8 and the keyway position on the disk body 3, opened 3 unthreaded holes at the circumference of disk body 3 respectively, opened 4 unthreaded holes at the circumference of disk body 8, such as Fig. 2 and shown in Figure 4.During the alignment keyway, two iron staffs can be inserted respectively in the unthreaded hole of two disk body correct positions, the rotation iron staff relatively rotates eccentric shaft 9 and eccentric bushing 12, thereby regulates two keyway positions on the disk body, makes its alignment.
Fit on key 10 positions in the keyway after disk body 3 and disk body 8 alignment, key 10 has limited relatively rotating of eccentric shaft 9 and eccentric bushing 12, eccentric stiffener not only can obtain accurate eccentric throw like this, and can keep the eccentric throw of fixing in operation process.
After eccentric bushing 12 and eccentric shaft 9 are located by key 10, half clamp ring that has keyway is installed on disk body 3 and the disk body 8, and keyway cooperates with key 10, key 10 centers have screwed hole, and bolt 14 is screwed on the key 10 by the stepped hole on the clamp ring, makes like this key 10 can not produce axial displacement, then install second half clamp ring, by bolt that two parts clamp ring is fastening, as can to obtain installing eccentric stiffener, its installation diagram as shown in Figure 5.
In the eccentric stiffener operation process, round table surface 7 and 7 ＇ are that gapless cooperates, so can not produce radial displacement between eccentric shaft 9 and the eccentric bushing 12, key 10 so that eccentric shaft 9 can not relatively rotate with eccentric bushing 12, can keep the eccentric throw of fixing, form integral body through clamp ring 11 fastening eccentric shaft 9 and eccentric bushings 12, whole eccentric stiffener operates steadily, noiseless, and be greatly improved service life.
When eccentric stiffener need to be dismantled, clamp ring 11 and key 10 are pulled down, among Fig. 2 disk body 3 axially on have four tapped through holes, be separately installed with 4 bolts 13, after turning bolt 13 on the disk body 3 eccentric bushing 12 and eccentric shaft 9 being broken away from, can dismantle easily.
When according to technological requirement, during the eccentric throw of eccentric adjustment mechanism, clamp ring 11 and key 10 are pulled down, on disk body 3 and disk body 8, insert iron staff in the unthreaded hole of correct position respectively, make eccentric bushing 12 rotations by rotating iron staff, in order to rotate conveniently, also can turn the bolt 13 on the disk body 3, after eccentric bushing ejected certain distance, use again iron staff rotating eccentric sleeve 12, after the keyway that needs on the keyway on the eccentric bushing 12 and the eccentric shaft 9 aligns, install key 10 and re-start the location, to be installed to half clamp ring of keyway on disk body 3 and the disk body 8, cooperate with key 10, behind the bolt 14 of screwing on, install second half clamp ring, with bolt that it is fastening, as can to obtain to have new eccentric throw eccentric stiffener.
Claims (6)
1. mold oscillation eccentric stiffener without radial clearance, comprise eccentric shaft and eccentric bushing, it is characterized in that: the mating part of the upper and eccentric bushing (12) of described eccentric shaft (9) is successively by great circle cylinder (5), round table surface (6) and small cylindrical surface (7) are formed by connecting, the mating part of described eccentric bushing (12) inside and eccentric shaft (9) is successively by great circle cylinder (5 ＇), round table surface (6 ＇) and small cylindrical surface (7 ＇) are formed by connecting, separately great circle cylinder on described eccentric shaft (9) and the eccentric bushing (12), the end face diameter of round table surface and small cylindrical surface junction equates, described round table surface (6) is identical with the cone angle of (6 ＇), described round table surface (6) and (6 ＇) locate to cooperate into gapless, described eccentric shaft (9) and eccentric bushing (12) are matched in clearance at great circle cylinder and small cylindrical surface place, there is the disk body (3) of a projection to link to each other with great circle cylinder (5) on the described eccentric shaft (9), a disk body (8) that equates with disk body (3) external diameter is arranged on the described eccentric bushing (12), described disk body (8) links to each other with great circle cylinder (5 ＇), described disk body (3) and disk body (8) all have keyway on the circumference separately, key (10) is installed in the keyway of disk body (3) and disk body (8) alignment, by clamp ring (11) disk body (3) and disk body (8) is tightened together; The cylindrical dead in line of the upper protruding disk body (3) of eccentric shaft great circle cylinder (5), round table surface (6), small cylindrical surface (7) and eccentric shaft (9), this axis is parallel with main shaft and have an eccentric throw; The cylindrical dead in line of the inboard great circle cylinder of eccentric bushing (12) (5 ＇), round table surface (6 ＇), small cylindrical surface (7 ＇) and eccentric bushing (12) the protruding disk body in the outside (8), this axis and eccentric bushing (12) outside are parallel and have an eccentric throw except protruding disk body (8) axis partly.
2. the mold oscillation eccentric stiffener without radial clearance according to claim 1, it is characterized in that: the cone angle of described round table surface (6) and (6 ＇) is 8 °～30 °.
3. the mold oscillation eccentric stiffener without radial clearance according to claim 1 and 2, it is characterized in that: have a keyway on the circumference of described disk body (8), have a plurality of keyways on the circumference of described disk body (3), keyway is measure-alike on two disk bodies, has at least 2 equally distributed unthreaded holes on the circumference of described disk body (3) and disk body (8).
4. according to claim 1 and 2 or 3 described mold oscillation eccentric stiffeners without radial clearance, it is characterized in that: described disk body (3) axially has at least 2 equally distributed tapped through holes, is separately installed with bolt (13).
5. according to claim 1 and 2 or 3 or 4 described mold oscillation eccentric stiffeners without radial clearance, it is characterized in that: described clamp ring (11) is bolted by two semicircles, it is trapezoidal groove that inside has cross section, described disk body (3) and disk body (8) are trapezoidal with the mating part cross section of clamp ring (11), and the inner trapezoidal groove two sides angle β of clamp ring is 8 °～30 °.
6. the mold oscillation eccentric stiffener without radial clearance according to claim 5, it is characterized in that: a semi-circular portions of described clamp ring (11), have a keyway at internal diameter, cooperate with key (10), have a stepped hole that is used for construction bolt (14) at the keyway center position, have in the heart a screwed hole that is connected with bolt (14) in the described key (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506530.4A CN102990019B (en) | 2012-11-29 | 2012-11-29 | Crystallizer-oscillated eccentric mechanism without radial clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506530.4A CN102990019B (en) | 2012-11-29 | 2012-11-29 | Crystallizer-oscillated eccentric mechanism without radial clearance |
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| CN102990019A true CN102990019A (en) | 2013-03-27 |
| CN102990019B CN102990019B (en) | 2015-03-25 |
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| CN201210506530.4A Expired - Fee Related CN102990019B (en) | 2012-11-29 | 2012-11-29 | Crystallizer-oscillated eccentric mechanism without radial clearance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216431A (en) * | 2013-05-03 | 2013-07-24 | 苏州稼乐植保机械科技有限公司 | Three-cavity diaphragm pump comprising main shaft provided with limiting structure |
| CN104259086A (en) * | 2014-09-12 | 2015-01-07 | 濮阳贝英数控机械设备有限公司 | Eccentric oscillation mechanism and eccentric adjustment method thereof |
| CN103216430B (en) * | 2013-05-03 | 2015-12-23 | 苏州稼乐植保机械科技有限公司 | Can three chamber diaphragm pumps of quick adjustment main shaft |
| CN113478030A (en) * | 2021-07-23 | 2021-10-08 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216431A (en) * | 2013-05-03 | 2013-07-24 | 苏州稼乐植保机械科技有限公司 | Three-cavity diaphragm pump comprising main shaft provided with limiting structure |
| CN103216430B (en) * | 2013-05-03 | 2015-12-23 | 苏州稼乐植保机械科技有限公司 | Can three chamber diaphragm pumps of quick adjustment main shaft |
| CN104259086A (en) * | 2014-09-12 | 2015-01-07 | 濮阳贝英数控机械设备有限公司 | Eccentric oscillation mechanism and eccentric adjustment method thereof |
| CN113478030A (en) * | 2021-07-23 | 2021-10-08 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
| CN113478030B (en) * | 2021-07-23 | 2022-06-10 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
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| CN102990019B (en) | 2015-03-25 |
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