CN212944666U - Lining plate of guide plate at inlet side of finishing mill - Google Patents
Lining plate of guide plate at inlet side of finishing mill Download PDFInfo
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- CN212944666U CN212944666U CN202020963372.5U CN202020963372U CN212944666U CN 212944666 U CN212944666 U CN 212944666U CN 202020963372 U CN202020963372 U CN 202020963372U CN 212944666 U CN212944666 U CN 212944666U
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- threaded hole
- parallel section
- lining plate
- section
- welt
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Abstract
The application provides a lining plate of a guide plate at an inlet side of a finishing mill, wherein a side guide plate comprises a bell mouth section close to one side of a loop and a parallel section close to a roller, and the lining plate comprises a bell mouth section lining plate arranged on the inner side wall of the bell mouth section and a parallel section lining plate arranged on the inner side wall of the parallel section; parallel section welt is equipped with the chamfer with the one end that the horn mouth section welt links to each other, and parallel section welt passes through retaining member and parallel section's lateral guide fixed connection, be equipped with on the parallel section welt with retaining member assorted screw hole, the up end and the parallel section welt of retaining member are on the coplanar. After parallel section lining plates are on line, the horn mouth lining plates of the side guide plates of three finishing mill groups in front of a hot rolling production line are changed from original slight abrasion to abrasion of the contact part of the lower edge which is not more than 15mm, namely, the horn mouth lining plates are not changed, so that the purposes of prolonging the online service life of spare parts and reducing the loss of the spare parts are achieved; the number of the fixing bolts is reduced, the disassembling difficulty can be reduced, and the risk of folding scrap steel when the head of the strip steel enters steel can be reduced.
Description
Technical Field
The application relates to the technical field of finishing mills, in particular to a lining plate of a guide plate on the inlet side of a finishing mill.
Background
Two sides of the inlet of the finishing mill are respectively provided with a group of side guide plates which can move oppositely, and the purpose is to add and hold the strip steel in the hot continuous rolling process so as to ensure good metal longitudinal extension and center line control of the strip steel in the hot rolling process. The two groups of side guide plates are symmetrical and are divided into a bell mouth section close to one side of the loop and a parallel section close to the roller. Two lining plates, namely a working side bell mouth section lining plate, a working side parallel section lining plate, a transmission side bell mouth section lining plate and a transmission side parallel section lining plate, are respectively arranged on the inner side of each group of side guide plates.
Due to the special shape, the bell mouth lining plate is an open device, only the joint of the inner lower edge and the parallel section lining plate is worn in daily life, the parallel section lining plate plays a main role in supporting, and a gully along the rolling direction is formed at the lower part of the parallel section lining plate after long-time wear. At present, in each overhaul period, the impact relatively born by a front frame is larger, the thickness of supplied materials is thicker, the mutation of plate shapes is larger, the abrasion is the most serious, and the front frame must be replaced in pairs every time, so that a plurality of bell mouth lining plates (the abrasion area is less than 5 percent, and the manufacturing cost is 5926.72 yuan/block) only with slightly abraded inner sides are wasted. Meanwhile, the situation that the design is redundant and the parameters are poor exists in the lower part of 4 bolts in the 7 bolt fixing mode adopted by the parallel section lining plate, the risk that the head of the strip steel is folded due to the fact that the bolt top cap is worn along with the lining plate is easily caused, and the disassembling difficulty is increased.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, this application provides a finishing mill inlet side baffle welt to reach extension horn mouth welt life by a wide margin, only change the parallel section welt when making every change and can not need change in pairs, thereby reach and save spare part loss, reduce intensity of labour's beneficial effect.
The application provides a lining plate of a guide plate at an inlet side of a finishing mill, wherein a side guide plate comprises a bell mouth section close to one side of a loop and a parallel section close to a roller, and the lining plate comprises a bell mouth section lining plate arranged on the inner side wall of the bell mouth section and a parallel section lining plate arranged on the inner side wall of the parallel section; parallel section welt is equipped with the chamfer with the one end that the horn mouth section welt links to each other, and parallel section welt passes through retaining member and parallel section's lateral guide fixed connection, be equipped with on the parallel section welt with retaining member assorted screw hole, the up end and the parallel section welt of retaining member are on the coplanar.
Further, the horn mouth section lining plate comprises a working side horn mouth section lining plate and a transmission side horn mouth section lining plate which are in a horn mouth shape, and the parallel section lining plate comprises a working side parallel section lining plate and a transmission side parallel section lining plate which are parallel to each other and are arranged oppositely.
Furthermore, the threaded hole adopts an open 120-degree chamfer angle threaded hole.
Furthermore, the range of the inclination angle of the chamfer is 25-29 degrees.
Furthermore, the quantity of screw hole is five, the screw hole includes screw hole on the afterbody, screw hole under the afterbody, screw hole on the front end, screw hole and middle screw hole under the front end, and the centre of a circle of screw hole under the afterbody and the centre of a circle of screw hole under the front end are on same water flat line, and middle screw hole is located the centre of screw hole on the afterbody and the screw hole on the front end, and the centre of a circle of screw hole on the afterbody, the centre of a circle of screw hole on the front end and the centre of a circle of middle screw hole.
Further, the distance between the tail upper threaded hole and the tail lower threaded hole is a, and the value range of a is 235-275 mm.
Furthermore, the distances from the tail lower threaded hole and the front lower threaded hole to the bottom plate are both b, and the value range of b is 180-220 mm.
Furthermore, the thickness of the parallel section lining plate is c, and the value range of c is 13-17 mm.
Furthermore, the length of the chamfer is d, and the value range of d is 40mm-50 mm.
The beneficial effect of this application lies in:
according to the inlet side guide plate lining plate of the finishing mill, after parallel section lining plates are on line, the original slightly worn side guide plate bell mouth lining plates of three finishing mill groups in front of a hot rolling production line are replaced and improved to be not more than 15mm worn at the contact part of the lower edge, namely, the lining plates are not required to be replaced, so that the purposes of prolonging the online service life of spare parts and reducing the loss of the spare parts are achieved; the number of the fixing bolts is reduced, so that the disassembly difficulty can be reduced, the fixing capacity of the fixing bolts is not influenced, and meanwhile, the loss of the fixing bolts M20 and 120mm hexagon socket bolts is saved; the design of the open type fixing screw hole with the chamfer angle essentially increases the buffering length and can also reduce the risk of folding scrap steel when the head of the strip steel enters steel.
In addition, the design principle of the application is reliable, the structure is simple, and the application prospect is very wide.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic top view of a finishing mill inlet side guide liner plate according to an embodiment of the present application.
FIG. 2 is a front view of a parallel section liner in one embodiment of the present application.
FIG. 3 is a schematic top view of a parallel section liner in one embodiment of the present application.
In the figure, 1, a bell mouth section, 2, a parallel section, 3, a chamfer, 4, a threaded hole, 5, a working side bell mouth section lining plate, 6, a transmission side bell mouth section lining plate, 7, a working side parallel section lining plate, 8, a transmission side parallel section lining plate, 401, a tail upper threaded hole, 402, a tail lower threaded hole, 403, a front end upper threaded hole, 404, a front end lower threaded hole, 405 and a middle threaded hole.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following explains key terms appearing in the present application.
The application provides a finishing mill entry side guide liner board, the side guide is including being close to the horn mouth section 1 of loop one side and being close to the parallel section 2 of roll.
FIG. 1 is a schematic top view of a finishing mill inlet side guide liner plate according to an embodiment of the present application. As shown in fig. 1, the liner plate includes a bell-mouth section liner plate disposed on an inner side wall of the bell-mouth section 1, and a parallel section liner plate disposed on an inner side wall of the parallel section 2. Specifically, the horn mouth section lining plate comprises a working side horn mouth section lining plate 5 and a transmission side horn mouth section lining plate 6 which are in a horn mouth shape, and the parallel section lining plate comprises a working side parallel section lining plate 7 and a transmission side parallel section lining plate 8 which are parallel to each other and are arranged oppositely.
The parallel section lining plate is fixedly connected with the side guide plate of the parallel section through a locking piece, and the locking piece adopts a locking bolt. Be equipped with on the parallel section welt with retaining member assorted screw hole 4, the up end and the parallel section welt of retaining member can reduce the loss to locking bolt and reduce the degree of difficulty of dismantling on the coplanar.
In order to avoid the risk of accident that the head of the strip steel is collided with the folding scrap steel partially due to the right-angle screw holes, the screw holes 4 are open type 120-degree chamfer screw holes.
FIG. 2 is a front view of a parallel section liner in one embodiment of the present application. FIG. 3 is a schematic top view of a parallel section liner in one embodiment of the present application. As shown in fig. 2 and 3, in this embodiment, the number of the threaded holes 4 is five, the threaded holes 4 include a tail upper threaded hole 401, a tail lower threaded hole 402, a front upper threaded hole 403, a front lower threaded hole 404, and a middle threaded hole 405, the center of the tail lower threaded hole 402 and the center of the front lower threaded hole 404 are on the same horizontal line, the middle threaded hole 405 is located between the tail upper threaded hole 401 and the front upper threaded hole 403, and the center of the tail upper threaded hole 401, the center of the front upper threaded hole 403, and the center of the middle threaded hole 405 are on the same straight line.
In order to avoid the situation that the edge of the lower corner of the newly replaced parallel section lining plate is obviously higher than the edge of the bell mouth section lining plate, a chamfer 3 is arranged at one end, connected with the bell mouth section lining plate, of the parallel section lining plate, and the value range of the inclination angle of the chamfer 3 is 25-29 degrees. In this embodiment, the inclination angle of the chamfer is 27 degrees.
In order to reduce the abrasion of the strip steel to the tail lower threaded hole 402 and the front lower threaded hole 404, the distances between the tail lower threaded hole 402 and the front lower threaded hole 404 and the bottom plate are both b, and the value range of b is 180-220 mm. In this embodiment, the value of b is preferably 200 mm. The distance between the tail upper threaded hole 401 and the tail lower threaded hole 402 is a, the value range of a is 235mm-275mm, and in this embodiment, the value of a is 255 mm.
The thickness of the parallel section lining plate is c, the value range of c is 13mm-17mm, and in the embodiment, the value of c is 15 mm. The length of the chamfer 3 is d, and the value range of d is 40mm-50 mm. In this embodiment, d is 40mm in value, and the replacement cycle of the bell mouth lining plate can be greatly increased by prolonging the impact length of the chamfer, so long as the absolute thickness of the bell mouth lining plate is greater than 15mm, the bell mouth lining plate can be in service online all the time.
The application provides a finishing mill entry side baffle welt at first through adjusting chamfer angle and the buffering length that the horizontal section welt lower edge and horn mouth contacted as main control point, the chamfer is adjusted to 27 by original 15, and impact length is prolonged to 40mm by 30mm, and parallel section welt trailing edge absolute thickness is attenuate to 15mm by original 27 mm. The change of the chamfer angle and the increase of the impact length can greatly increase the replacement period of the bell mouth lining plate, and the bell mouth lining plate can be in service online all the time as long as the absolute thickness of the bell mouth lining plate is more than 15 mm; secondly, the connection form of the parallel section lining plate and the side guide plate is changed, two fixing bolt holes which are redundant in design are removed, the fixing mode of 2 in the upper portion 3 is changed, the distance between a tail lower threaded hole and a front end lower threaded hole and a bottom plate is 100mm and is adjusted to 200mm, the distance between the tail upper threaded hole and the tail lower threaded hole is adjusted to 255mm from the original 355mm, 5 fixing screw holes of the whole lining plate are all changed into open type 120-degree chamfer screw holes, the loss of the bolts and the difficulty of dismounting are reduced by the parallel section lining plate which is finally threaded, and meanwhile, the risk of the accident that the head of the strip steel is collided with the folded scrap steel due to the right-angle screw holes is.
After the parallel section lining plates are arranged on the line, the horn mouth lining plates of the side guide plates of the three finishing mill groups in front of the hot rolling production line need to be replaced and improved from original slight abrasion to that the abrasion of the contact part of the lower edge does not exceed 15mm, namely the horn mouth lining plates do not need to be replaced, and the purposes of prolonging the online service life of spare parts and reducing the loss of the spare parts are achieved; the number of the fixing bolts is reduced, so that the disassembly difficulty can be reduced, the fixing capacity of the fixing bolts is not influenced, and meanwhile, the loss of the fixing bolts M20 and 120mm hexagon socket bolts is saved; the design of the open type fixing screw hole with the chamfer angle essentially increases the buffering length and can also reduce the risk of folding scrap steel when the head of the strip steel enters steel.
After using the parallel section welt that this application provided, the horn mouth welt by originally every overhaul cycle 12 days must change 2~3 frames, four to six group's side guide 8~12 welts altogether reduce to at least four cycle 48 days and change 2~3 frames, four to six group's side guide 8~12 welts M20 x 120mm hexagon socket head cap formula bolt loss is less not calculation benefit altogether. According to the current procurement data of the bell mouth lining plate, the manufacturing cost of 2020 and 3 months, the manufacturing cost is 5926.72 yuan/block, the total consumption price of the original year is 144-216 ten thousand yuan, the total consumption price of the modified year is 36-54 ten thousand yuan, the annual spare part cost is saved by about 108-162 ten thousand yuan, and the cost is greatly reduced.
Although the present application has been described in detail with reference to the accompanying drawings in conjunction with the preferred embodiments, the present application is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present application by those skilled in the art without departing from the spirit and scope of the present application, and these modifications or substitutions are intended to be covered by the present application/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a finishing mill entry side baffle welt, side guide include the horn mouth section (1) that is close to loop one side and be close to parallel section (2) of roll, its characterized in that: the lining plates comprise a bell mouth section lining plate arranged on the inner side wall of the bell mouth section (1) and a parallel section lining plate arranged on the inner side wall of the parallel section (2); parallel section welt is equipped with chamfer (3) with the one end that the horn mouth section welt links to each other, and parallel section welt passes through retaining member and parallel section's lateral guide fixed connection, be equipped with on the parallel section welt with retaining member assorted screw hole (4), the up end and the parallel section welt of retaining member are on the coplanar.
2. The finishing mill inlet side guide liner plate of claim 1, wherein: the horn mouth section lining plate comprises a working side horn mouth section lining plate (5) and a transmission side horn mouth section lining plate (6) which are in a horn mouth shape, and the parallel section lining plate comprises a working side parallel section lining plate (7) and a transmission side parallel section lining plate (8) which are parallel to each other and are arranged oppositely.
3. The finishing mill inlet side guide liner plate of claim 1, wherein: the threaded hole (4) is an open 120-degree chamfer threaded hole.
4. The finishing mill inlet side guide liner plate of claim 1, wherein: the range of the inclination angle of the chamfer (3) is 25-29 degrees.
5. The finishing mill inlet side guide liner plate of claim 1, wherein: the number of the threaded holes (4) is five, the threaded holes comprise an upper tail threaded hole (401), a lower tail threaded hole (402), an upper front end threaded hole (403), a lower front end threaded hole (404) and a middle threaded hole (405), the circle center of the lower tail threaded hole (402) and the circle center of the lower front end threaded hole (404) are on the same horizontal line, the middle threaded hole (405) is located between the upper tail threaded hole (401) and the upper front end threaded hole (403), and the circle center of the upper tail threaded hole (401), the circle center of the upper front end threaded hole (403) and the circle center of the middle threaded hole (405) are on the same straight line.
6. The finishing mill inlet side guide liner plate of claim 5, wherein: the distance between the tail upper threaded hole (401) and the tail lower threaded hole (402) is a, and the value range of a is 235-275 mm.
7. The finishing mill inlet side guide liner plate of claim 5, wherein: the distances between the tail lower threaded hole (402) and the front end lower threaded hole (404) and the bottom plate are both b, and the value range of b is 180-220 mm.
8. The finishing mill inlet side guide liner plate of claim 1, wherein: the thickness of the parallel section lining plate is c, and the value range of c is 13-17 mm.
9. The finishing mill inlet side guide liner plate of claim 1, wherein: the length of the chamfer (3) is d, and the value range of d is 40mm-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020963372.5U CN212944666U (en) | 2020-05-29 | 2020-05-29 | Lining plate of guide plate at inlet side of finishing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020963372.5U CN212944666U (en) | 2020-05-29 | 2020-05-29 | Lining plate of guide plate at inlet side of finishing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212944666U true CN212944666U (en) | 2021-04-13 |
Family
ID=75376963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020963372.5U Expired - Fee Related CN212944666U (en) | 2020-05-29 | 2020-05-29 | Lining plate of guide plate at inlet side of finishing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212944666U (en) |
-
2020
- 2020-05-29 CN CN202020963372.5U patent/CN212944666U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |