CN217251597U - Fault processing structure for hot rolling conveying roller way - Google Patents
Fault processing structure for hot rolling conveying roller way Download PDFInfo
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- CN217251597U CN217251597U CN202221121814.7U CN202221121814U CN217251597U CN 217251597 U CN217251597 U CN 217251597U CN 202221121814 U CN202221121814 U CN 202221121814U CN 217251597 U CN217251597 U CN 217251597U
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Abstract
The utility model relates to a fault processing structure of a hot rolling conveying roller way, which comprises a transmission side rapid pad and a driven side rapid pad, wherein the transmission side rapid pad is two sections with different thicknesses, the thickness of a thin thickness section is the elevation descending value of the roller way, and a through hole is processed on a thick thickness section; the whole thickness of the passive side rapid pad is a roller elevation descending value, and one end of the passive side rapid pad is provided with a through hole; the transmission side quick pad is placed in an axial mounting groove of the roller way bottom beam on the transmission side of the roller way; the driven side rapid pad is placed in an axial mounting groove of a roller way bottom beam at the driven side of the roller way; the roller way bottom plate is arranged on the upper end faces of the transmission side rapid pad and the driven side rapid pad, and the pressing plate is arranged on the upper end of the roller way bottom plate and connected with the roller way bottom beam through a fixing bolt. The utility model discloses an add the backing plate of reasonable thickness between the bottom plate of roll table assembly and foundation beam, can take out the backing plate when the roll table breaks down and needs to handle for a long time, reduce the roll table elevation, resume production fast.
Description
Technical Field
The utility model relates to a rollgang mechanical equipment on the hot rolling belted steel production line, in particular to hot rolling rollgang fault handling structure.
Background
The conveying roller way connecting the tail frame rolling mill and the coiling machine on the hot rolling strip steel production line has great influence on the surface quality of strip steel, but is influenced by factors such as a large number of roller ways, high rotating speed, large thermal expansion, cooling water and the like, the failure rate of the roller ways is high, the processing time is long, and great difficulty is increased on equipment maintenance. The failure rate is reduced by adopting a mode of pre-repairing equipment in a general steel mill, so that a large amount of spare part cost is consumed, the cost is increased, and the effect is not obvious. In order to reduce the fault processing time of the roller ways, the roller ways designed by Mitsubishi company of Japan and Simmark company of Germany are provided with a quick-change function. The quick change function plays a positive role in actual use, particularly, the roller way replacement time under layer cooling can be reduced to 40 minutes, the roller way under the guide ruler can be reduced to 2 hours, and the roller way under the instrument room can be reduced to 3 hours by adopting the design of Simmark company, even so, the quick change function belongs to huge loss for the production line of a steel rolling mill, which is known as a money printer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot rolling rollgang fault handling structure to the long problem of hot rolling rollgang fault handling time, sets up fixed thickness's backing plate (fill up fast) between the bottom plate of roll table foundation beam and roll table assembly, can follow roll table beam-ends axial and take out fast the pad fast out when handling the trouble, reduces the roll table elevation, resumes production fast.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a fault processing structure of a hot rolling conveying roller way comprises a transmission side rapid pad and a driven side rapid pad, wherein the transmission side rapid pad is provided with two sections with different thicknesses, the thickness of a thin thickness section is a roller way elevation descending value, and a through hole is processed on a thick thickness section; the whole thickness of the driven side rapid pad is a roller elevation descending value, U-shaped long holes are formed in two sides of the driven side rapid pad, and a through hole is formed in one end of the driven side rapid pad;
the transmission side rapid pad is placed in an axial installation groove of the roller way transmission side roller way bottom beam, a thick section of the transmission side rapid pad is exposed outside the roller way bottom beam, and a step between the thick section and a thin section is clamped at the axial end part of the roller way bottom beam;
the driven side rapid pad is placed in an axial mounting groove of a roller bed bottom beam at the driven side of the roller bed, a U-shaped long hole of the driven side rapid pad is used for connecting a roller bed bottom plate connecting bolt in a penetrating manner, and the end part of the driven side rapid pad with a through hole is exposed out of the end part of the roller bed bottom beam;
the roller way bottom plate is arranged on the upper end faces of the transmission side rapid pad and the driven side rapid pad, the pressing plate is arranged on the upper end of the roller way bottom plate, and the pressing plate is connected with the roller way bottom beam through a fixing bolt.
The end of the transmission side of the roller way bottom plate is provided with a shoulder, the shoulder blocks the axial positioning of the roller way bottom plate for the quick pad at the transmission side, and the middle part of the shoulder of the roller way bottom plate is provided with a slot for accommodating the thick section of the quick pad at the transmission side.
The thickness of the thick section is 5-8mm greater than that of the thin section.
And the roller way bottom beams on two sides of the roller way bottom plate are welded with stop blocks.
And U-shaped long holes are formed in two sides of the driven side rapid pad, and are used for penetrating through roller bed bottom plate connecting bolts.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an add the backing plate of reasonable thickness between the bottom plate of roll table assembly and foundation beam, can take out the backing plate when the roll table breaks down and needs to handle for a long time, reduce the roll table elevation, resume production fast.
The utility model discloses a quick pad, in the field usage, need not consider the mounted position of roll table, because the roll table need not be changed when the fault handling, only need take the backing plate of fixed thickness below the roll table bottom plate out, reduce the roll table elevation rapidly, the roll table is changed again to the quick recovery production when waiting to overhaul, and the fault handling time can be controlled within 20 minutes.
Drawings
Fig. 1 is a structural schematic diagram of a roller bed bottom beam.
Fig. 2 is a schematic view of the installation of a simulated chassis.
Fig. 3 is a schematic view of a weld stop.
Fig. 4 is a schematic drawing with the simulated backplane removed.
Fig. 5 is a schematic view of the mounting of the quick pad.
Fig. 6 is a schematic view of an assembled roller bed base plate.
Fig. 7 is a schematic view of the mounting platen.
Fig. 8 is a schematic view of the assembly of the roller platen bolts.
Fig. 9 is a partially enlarged schematic view of fig. 8.
Fig. 10 is a top view of the drive side quick mount.
Fig. 11 is a front view of the drive side quick mount.
Fig. 12 is a top view of a passive side quick mount.
Fig. 13 is a front view of the passive side quick tie plate.
Fig. 14 is a radial overall view of the roller bed after assembling the quick shim plate.
In the figure: the device comprises a roller way bottom plate 1, a driving side rapid backing plate 2, a roller way bottom beam 3, a bottom plate simulation piece 4, a stop block 5, a pressing plate 6, a thickness section 7, a through hole 8, a thickness section 9, a U-shaped long hole 10, a driven side rapid backing plate 11, a roller way assembly 12 and a pressing plate bolt 13.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings:
a method for fault treatment of a hot rolling conveying roller way is shown in figure 14, and comprises the steps of fixing bearing blocks on two sides of a roller way assembly 12 on a roller way bottom plate 1, and additionally arranging quick base plates (a transmission side quick base plate 2 and a driven side quick base plate 11) between the roller way bottom plate 1 and a roller way bottom beam 3 to ensure that the roller way elevation is consistent with the rolling line elevation; when the roller way breaks down, the rapid backing plates (the transmission side rapid backing plate 2 and the driven side rapid backing plate 11) are quickly drawn out, the height of the roller way, which is equal to the thickness of the rapid backing plates (the transmission side rapid backing plate 2 and the driven side rapid backing plate 11), is reduced, the contact between the broken roller way and the lower surface of the strip steel is avoided, and the production is quickly recovered; the method comprises three steps of rapid pad design, roller way and rapid pad installation and rapid pad use, and specifically comprises the following steps:
1) an experiment roller lower than the original roller elevation is manufactured, the experiment roller is not provided with a motor, the experiment roller is a free roller, the experiment roller is installed by utilizing the maintenance time, the experiment roller elevation is gradually raised through a gasket group, a steel experiment is carried out, the scratch condition of the lower surface of the strip steel is checked, and the roller way elevation descending value is determined according to an experiment conclusion.
The mounting position of the quick pad needs to be determined first:
considering the requirements of replacement of the roller way assembly 1 and interchangeability of spare parts, the rapid pad is separated from the roller way assembly 1, and the rapid pad is independently installed on the roller way bottom beam 3, so that the normal replacement of the roller way is not influenced under the condition that the elevation does not need to be changed. And the rapid pad is arranged between the roller way bottom beam 3 and the roller way bottom plate 1, the roller way assembly can be independently improved (the height of the bearing seat and the thickness of the bottom plate are reduced) for the established production line, and the purpose of increasing the rapid pad can be realized.
Determining the thickness of the rapid pad:
the rapid pad thickness is equal to the expected descending amplitude of the roller way elevation, and the accuracy of the descending amplitude of the roller way elevation directly influences the fault treatment effect. If the reduction value is too small, the wave shape or the buckling of the strip steel can still scrape a roller way (a grinding roller) to scratch the surface of the strip steel. The reduction value is too large, the impact on the outlet roller is larger when the head of the strip steel passes through, and particularly when the head of the strip steel is buckled, the impact is larger, and the service life of the bearing of the outlet roller is influenced. Therefore, a test roller is manufactured, the elevation of the test roller is 435mm, and the elevation is 20mm higher than the elevation of an original roller way; the test roll was not powered and was a free roll. And gradually lifting the elevation of the test roller through the gasket group, and obtaining an ideal roller table elevation descending value according to the judgment result of the scratch condition of the strip steel surface by the lower surface inspection instrument behind the roller table. The experimental conditions are selected to produce 2.0-14.0mm strip steel, and the roller speed is 8-14 m. The test procedure was as follows:
the first step of the experiment: and installing a test roller with the elevation of 435mm by utilizing the overhaul time. In the steel passing process, the condition that the test roller is not in contact with the strip steel is observed on site, the free roller does not rotate, and the lower surface of the strip steel is observed to have no scratch defect through the lower surface inspection instrument.
Experiment second step: the elevation of the test roller is gradually lifted through the gasket group, when the elevation of the roller way is adjusted to the height of 445mm, the head of the strip steel can occasionally collide with the roller surface to drive the roller way to rotate at a low speed for 2-4 circles, but the lower surface inspection instrument does not judge scratches. When the elevation of the roller way is continuously lifted to the height of 452mm, the head and tail tension-free sections of the strip steel occasionally contact the test roller to drive the test roller to rotate, but the middle tension section of the strip steel is not in contact with the test roller, and the free roller stops rotating in the period. In the process, the lower surface inspection instrument still does not give an alarm, and the manual uncoiling inspection finds that intermittent slight scratch marks exist occasionally, but the slight scratch marks are not serious and do not form scratch defects. When the roller way is lifted to 454mm, the wave shape of the strip steel can drive the roller way to continuously rotate, and the edge of the strip steel is contacted with the free roller, so that sparks occasionally occur. During the period, the lower surface inspection instrument gives an alarm, and the quality defect is formed by finding intermittent obvious scratch marks through manual inspection.
And a third step of experiment: according to the second step, the upper limit of the roller bed elevation is determined to be 452mm, 450mm is selected to continue the test in consideration of certain safety margin, and if no abnormity exists, the test time is prolonged to carry out a long-time (one-week) adaptability test. The test conclusion is as follows:
adjusting the elevation of the test roller to 450mm, carrying out long-time (one week) no-identification test, totally passing 4621 steel grades which relate to tens of steel grades such as structural steel, alloy steel, weathering steel and the like, covering the thickness of the steel grade by 1.5-22mm, and monitoring the steel grade in real time by a lower surface inspection instrument until the lower surface of the strip steel is not scratched.
And (4) experimental conclusion: the elevation of the roller way is reduced by 5mm, so that the contact between the lower surface of the strip steel and the roller way can be effectively avoided, and the scratch is avoided. From this confirm with the roller way assembly of 5mm backing plate cooperation 450mm elevation, when guaranteeing that the roller way elevation satisfies the rolling line elevation, also can withdraw from behind the 5mm gasket when the roller way trouble, do not influence normal steel production of crossing.
2) The thickness of the rapid pad is determined according to the roller way elevation descending value, two rapid pads of a transmission side and a driven side are manufactured respectively, see fig. 10-13, the rapid pad 2 of the transmission side is processed into two sections with different thicknesses, wherein the thickness of the thin thickness section 9 is 5mm for the roller way elevation descending value, a through hole 8 with phi 50 is processed on the thick thickness section 7, the thickness of the thick thickness section 7 is 10mm, the thick thickness section 7 is used for axially positioning the rapid pad and the roller way bottom beam 3, and the through hole 8 is matched with a pull hook when the rapid pad is pulled out so as to facilitate the rapid pad to be pulled out.
The uniform thickness of the whole passive side rapid pad 11 is 5mm of the elevation drop value of the roller way, U-shaped long holes 10 are processed on two sides of the passive side rapid pad 11, and a through hole 8 is processed at one end of the passive side rapid pad 11; the driven side rapid pad 11 does not need to consider axial positioning, but is provided with the U-shaped long hole 10 (if the bolt is removed in the event of failure, the U-shaped long hole 10 does not need to be opened), so that the rapid pad can be conveniently drawn out after the bolt is loosened.
In order to prevent the rapid pad from being corroded and worn, the rapid pad is made of stainless steel.
3) Installing a roller way and a quick pad: as shown in fig. 1-9;
a) install roll table bottom plate simulation piece 4 in roll table floorbar 3's roll table axial mounting groove (last tang), weld dog 5 on roll table floorbar 3 of roll table bottom plate simulation piece 4 both sides, remove roll table bottom plate simulation piece 4, put into the quick pad of transmission side 2 and the quick pad 11 of passive side in transmission side and passive side respectively, the quick pad 2's of transmission side thin thickness section 9 is arranged in roll table axial mounting groove, the quick pad 2's of transmission side thick thickness section 7 and the step card between the thin thickness section 9 are at the tip of roll table floorbar 3, the quick pad 11's of passive side U type trompil 10 is used for cross-under roll table bottom plate connecting bolt, the quick pad area 11 of passive side has the tip of through-hole 8 to expose the tip of roll table floorbar 3.
Welding method of the stopper 5: after clearing up roller bed floorbar 3, install bottom plate simulation piece 4 on roller bed floorbar 3, adjust the position well, guarantee that bottom plate simulation piece 4 and 3 contacts closely knit of roller bed floorbar, do not have the gap (this position must confirm, because the degree of depth of tang only is 2mm on the roller bed floorbar 3, the outer chamfer of 1.5mm in addition of top dead center). Then with dog 5 lean on bottom plate simulation 4 welding on roller table floorbar 3, the welding seam height 3mm, the segmentation spot welding when beginning, later full weld, the purpose of doing so is to avoid dog 5 to warp after the welding, appears the gap in dog 5 and bottom plate simulation 4. After the stop 5 is welded, the base plate dummy member 4 is removed.
The transmission side rapid pad 2 has an axial positioning function, and a shoulder below the transmission side rapid pad 4 is ensured to be tightly attached to the end part of the roller bed bottom beam 3. The driven side rapid pad 11 can be used as long as the U-shaped long hole 10 and the bolt hole position on the roller bed bottom beam 3 are aligned.
b) Install roller bed bottom plate 1 that will be equipped with roller bed assembly 12 and fill up the upper end fast and carry out transverse positioning through dog 5, the tip of 1 transmission sides of roller bed bottom plate is equipped with the high circular bead of 5mm, this circular bead blocks the axial positioning that 2 quick pads 2 of transmission side are used for roller bed bottom plate 1, can stack up roller bed axial fixity fast, there is 76mm notch thick thickness section 7 (thick thickness section width is less than 76mm) that is used for holding 2 quick pads of transmission side in the circular bead middle part of roller bed bottom plate 1.
c) And roller bed bolts are assembled after the pressing plate 6 is installed.
The roller way bottom plate 1 is arranged in the range limited by the stop block 5, and the roller way bottom plate 1 is axially positioned on the operation side to ensure that a shoulder at the lower part of the bottom plate and the end face of the rapid pad are leaned. The bolts are screwed after the pressing plate 6 is installed. After the bolts are fastened, the lower surface of the roller way bottom plate 1 and the upper surface of the quick pad are closely attached, and no gap exists.
4) Use of the rapid pad: when the roller way breaks down and needs to be treated for a long time, rush repair personnel loosen nuts of roller way fixing bolts, assemble and improve the roller way by a crane, draw out the quick cushion through the through holes 8 on the quick cushion, screw down the roller way fixing bolts after the crane loosens the roller way, withdraw personnel after confirming that the clearance below the roller way is eliminated, and restore production.
A fault treatment structure of a hot rolling conveying roller way comprises a transmission side rapid pad 2 and a driven side rapid pad 11, wherein the transmission side rapid pad 2 is provided with two sections with different thicknesses, the thickness of a thin thickness section 9 is a roller way elevation descending value, and a through hole 8 is processed on a thick thickness section 7; the overall thickness of the driven side rapid pad 11 is a roller elevation descending value, two sides of the driven side rapid pad 11 are provided with U-shaped long holes 10, and one end of the driven side rapid pad 11 is provided with a through hole 8; the widths of the transmission side rapid pad 2 and the driven side rapid pad 11 are both smaller than the width of the end part of the roller way bottom plate 3 by 2 mm;
the transmission side rapid pad 2 is placed in an axial installation groove of the roller way bottom beam 3 at the transmission side of the roller way, the thick section 7 of the transmission side rapid pad 2 is exposed outside the roller way bottom beam 3, and a step between the thick section 7 and the thin section 9 is clamped at the axial end part of the roller way bottom beam 3;
the driven side rapid pad 11 is placed in an axial installation groove of the roller bed bottom beam 3 on the driven side of the roller bed, a U-shaped long hole 10 of the driven side rapid pad 11 is used for penetrating a roller bed bottom plate connecting bolt, and the end part of the driven side rapid pad 11 with the through hole 10 is exposed out of the end part of the roller bed bottom beam 3;
the roller way bottom plate 1 is arranged on the upper end faces of the transmission side rapid pad 2 and the driven side rapid pad 11, the pressing plate 6 is arranged on the upper end of the roller way bottom plate 1, and the pressing plate 6 is connected with the roller way bottom beam 3 through a fixing bolt.
The tip of 1 transmission side of roll table bottom plate is equipped with the circular bead, and this circular bead blocks the axial positioning that the quick pad 2 of transmission side is used for roll table bottom plate 1, and slotted hole is used for holding the thickness section 7 of the quick pad 2 of transmission side in the circular bead middle part of roll table bottom plate 1.
The thickness of the thick section 7 is 5-8mm greater than that of the thin section 9.
And stop blocks 5 are welded on the roller way bottom beams on two sides of the roller way bottom plate 1.
The utility model discloses a roll table motor links into an integrated entity through flange and roll table bearing frame, can hoist and mount together along with the roll table. The bearing seats on both sides of the roller way are connected into a whole through a bottom beam (plate). The net distance between the roller ways is 60-80 mm. And operating spaces not smaller than 500mm are arranged on two sides of the roller way bearing seat.
Claims (5)
1. The fault processing structure of the hot rolling conveying roller way is characterized by comprising a transmission side quick pad and a driven side quick pad, wherein the transmission side quick pad is provided with two sections with different thicknesses, the thickness of a thin thickness section is a roller way elevation descending value, and a through hole is processed on a thick thickness section; the whole thickness of the passive side rapid pad is a roller elevation descending value, and one end of the passive side rapid pad is provided with a through hole;
the transmission side rapid pad is placed in an axial installation groove of the roller way transmission side roller way bottom beam, a thick section of the transmission side rapid pad is exposed outside the roller way bottom beam, and a step between the thick section and a thin section is clamped at the axial end part of the roller way bottom beam;
the driven side rapid pad is placed in an axial mounting groove of the roller bed bottom beam of the roller bed, and the end part of the driven side rapid pad with the through hole is exposed out of the end part of the roller bed bottom beam;
the roller way bottom plate is arranged on the upper end faces of the transmission side rapid pad and the driven side rapid pad, the pressing plate is arranged on the upper end of the roller way bottom plate, and the pressing plate is connected with the roller way bottom beam through a fixing bolt.
2. The structure of claim 1, wherein the end of the driving side of the roller bed bottom plate is provided with a shoulder for clamping the driving side rapid pad for axial positioning of the roller bed bottom plate, and the middle of the shoulder of the roller bed bottom plate is provided with a notch for accommodating the thickness section of the driving side rapid pad.
3. The hot rolling rollgang failure handling structure of claim 1 wherein the thick section has a thickness 5-8mm greater than the thin section.
4. The fault handling structure of a hot rolling conveying roller way according to claim 1, wherein two sides of the axial installation groove of the roller way bottom beam are welded with stoppers.
5. The hot rolling roller way fault handling structure according to claim 1, wherein the driven side rapid pad has U-shaped long holes on both sides, and the U-shaped long holes of the driven side rapid pad are used for penetrating through roller way bottom plate connecting bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221121814.7U CN217251597U (en) | 2022-05-11 | 2022-05-11 | Fault processing structure for hot rolling conveying roller way |
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| CN202221121814.7U CN217251597U (en) | 2022-05-11 | 2022-05-11 | Fault processing structure for hot rolling conveying roller way |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904922A (en) * | 2022-05-11 | 2022-08-16 | 本钢板材股份有限公司 | Fault processing structure for hot rolling conveying roller way |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904922A (en) * | 2022-05-11 | 2022-08-16 | 本钢板材股份有限公司 | Fault processing structure for hot rolling conveying roller way |
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