Water retaining structure and rolling mill

Abstract

The utility model relates to a water retaining structure and a rolling mill, the water retaining structure comprises a clamping structure and a water retaining plate, the clamping structure is arranged at one end, far away from a working roll group, of the opposite surfaces of two back-up roll bearing seats, a matching structure is arranged on the surface of one side of the water retaining plate, and the matching structure is matched with the clamping structure in an inserted mode. The water baffle is fixed between the ends, away from the working roller set, of the two supporting roller bearing seats, and the surface of the side, away from the upper supporting roller, of the water baffle is not higher than the upper end faces of the supporting roller bearing seats. By designing the water retaining structure above the upper supporting roller, under the condition that original equipment functions are not changed, hidden dangers caused by water throwing of the roller can be simply, reliably and effectively solved with low cost, adverse effects of cooling water of a rolling mill on rolling mill equipment and rolled strips are avoided, production halt and pause risks are reduced, product quality risks are reduced, and production efficiency is improved. Therefore, the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling equipment, in particular to a water retaining structure and a rolling mill. Background Art

[0002] The roll system structure of the existing rolling mill is mainly composed of a rolling mill arch, a support roll group, a working roll group, a rolling mill cooling water system, front and rear guides and related accessories, wherein the support roll group includes a support roll bearing seat, an upper support roll and a lower support roll, the upper support roll and the lower support roll are arranged at intervals up and down, and the two ends of the upper support roll and the lower support roll are respectively fixed to the rolling mill arch through the support roll bearing seat, the working roll group includes a working roll bearing seat, an upper working roll and a lower working roll, the upper working roll and the lower working roll are arranged up and down between the upper support roll and the lower support roll, and the two ends of the upper working roll and the lower working roll are respectively fixed to the rolling mill arch through the working roll bearing seat, the upper support roll is in contact with the upper working roll, the lower support roll is in contact with the lower working roll, and the upper working roll and the lower working roll cooperate to roll the plate.

[0003] During the rolling process, mill cooling water is very important in the production process. It is the main cooling medium for the mill rolls and its main functions are:

[0004] 1. Reduce the rolling temperature. During the rolling process, the temperature of the rolls will continue to rise. If not cooled in time, the rolling temperature will rise sharply, affecting product quality and roll life. By supplying cooling water, the rolls can be effectively cooled to ensure that the rolling temperature is within a controllable range, thereby ensuring product quality and production efficiency.

[0005] 2. Prevent roller deformation. When the roller is at high temperature, the roller will deform, resulting in inaccurate product dimensions and affecting product quality. Cooling water can quickly cool the roller, speed up the roller's recovery speed, and reduce the risk of roller deformation;

[0006] 3. Improve product surface quality. Roller cooling water can effectively control product surface temperature and avoid oxides, inclusions, and gases generated under high temperature conditions to ensure product surface quality and yield.

[0007] The mill's cooling water system is typically installed inside the mill, located on the inlet and outlet sides of the work rolls. During the rolling process, the work rolls typically rotate at speeds ranging from 1.5m / s to 21m / s. The cooling water used to cool the work rolls instantly adheres to the roll surfaces, causing water shedding due to high-speed rotation. This water shedding is irregular and unintended, and can accumulate on other mill equipment, such as the HGC hydraulic cylinders, step pads, support roll bearings, and front and rear guides. This water not only corrodes the equipment, causing corrosion, damage, and reduced precision, but also carries dust and other foreign matter along these components, landing on the surface of the rolled strip, impacting the product's surface quality and performance. In severe cases, it can also cause scrap steel, damage equipment, and cause production halts. Utility Model Content

[0008] The first purpose of the present utility model is to provide a water retaining structure so as to reduce the corrosion of the mill equipment by the mill cooling water, avoid the mill cooling water other than the process requirements from falling onto the surface of the rolled product, and ensure the surface quality and performance of the product.

[0009] The second object of the present utility model is to provide a rolling mill including the above-mentioned water retaining structure.

[0010] To achieve the above purpose, the present invention provides the following technical solutions:

[0011] A water retaining structure for a rolling mill, the rolling mill comprising an upper support roll and a working roll group arranged in pairs below the upper support roll, wherein both ends of the upper support roll are supported by support roll bearing seats respectively, and the water retaining structure comprises:

[0012] A clamping structure, wherein the clamping structure is provided on one end of the facing surfaces of the two support roller bearing seats away from the working roller group;

[0013] A water baffle, a mating structure is provided on one side surface of the water baffle, and the mating structure is plugged into and matched with the snap-in structure to fix the water baffle between the two support roller bearing seats away from one end of the working roller group, and the side surface of the water baffle away from the upper support roller is not higher than the upper end surface of the support roller bearing seat.

[0014] In one embodiment of the present application, the clamping structure is a clamping protrusion provided on the surfaces facing each other of the two support roller bearing seats, and the matching structure is a clamping plate, and a clamping groove is provided at one end of the clamping plate away from the water baffle, and the clamping groove is clamped and matched with the clamping protrusion;

[0015] Alternatively, the clamping structure is a clamping plate arranged on the facing surfaces of the two support roller bearing seats, the upper end of the clamping plate is provided with a clamping groove, the matching structure is a clamping protrusion, and the clamping groove is clamped and matched with the clamping protrusion.

[0016] In one embodiment of the present application, the support roller bearing seat is provided with a plurality of the clamping protrusions symmetrically arranged about the axis of the upper support roller, or the support roller bearing seat is provided with a plurality of the clamping plates symmetrically arranged about the axis of the upper support roller.

[0017] In one embodiment of the present application, the snap-fit ​​groove is an open U-shaped groove, and a guide structure is provided at the opening of the snap-fit ​​groove. The width of the guide structure gradually increases along the bottom of the snap-fit ​​groove to the opening of the snap-fit ​​groove.

[0018] In one embodiment of the present application, the edge shape of the water retaining plate along the axial direction of the upper support roller is adapted to the shapes of the facing surfaces of the two support roller bearing seats.

[0019] In one embodiment of the present application, the edge of the water retaining plate along the direction parallel to the horizontal plane and perpendicular to the axis of the upper support roller does not exceed the edge of the upper support roller bearing seat.

[0020] In one embodiment of the present application, a lifting structure is provided on a surface of the water retaining plate on a side away from the upper support roller.

[0021] In one embodiment of the present application, the lifting structure includes lifting ears arranged at four corners of a surface of a side of the water retaining plate away from the upper support roller.

[0022] In one embodiment of the present application, a reinforcing rib plate is provided on at least one side surface of the water retaining plate.

[0023] A rolling mill comprises the water retaining structure as described above.

[0024] It can be seen from the above technical scheme that the utility model discloses a water retaining structure, which is used for a rolling mill. The rolling mill includes an upper support roller and a working roller group arranged in pairs below the upper support roller. The two ends of the upper support roller are respectively supported by the support roller bearing seats. The water retaining structure includes a clamping structure and a water retaining plate, wherein the surfaces facing each other of the two support roller bearing seats are provided with a clamping structure at one end away from the working roller group, and a matching structure is provided on one side surface of the water retaining plate. The matching structure is plugged into the clamping structure to fix the water retaining plate between the two support roller bearing seats at one end away from the working roller group, and the surface of the water retaining plate on the side away from the upper support roller is not higher than the upper end surface of the support roller bearing seat.

[0025] According to the assembly structure of the roller system in the rolling mill, it was observed that during the high-speed rotation of the roller, the cooling water of the rolling mill was transmitted through the roller system and then thrown out from the surface of the upper support roller, and the upper support roller also has a certain space for setting the water retaining structure. Therefore, in this application, the water retaining structure is designed to be installed on the support roller bearing seats at both ends of the upper support roller. By designing a water retaining structure above the upper support roller, the hidden dangers caused by the water throwing of the rolling mill can be effectively solved in a simple, reliable and low-cost manner while keeping the original equipment function unchanged, avoiding the adverse effects of the mill cooling water on the rolling mill equipment and the rolled strip, reducing the risk of production stoppage and pause, reducing product quality risks, and fault handling safety risks, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model from one perspective;

[0028] Figure 2 A schematic structural diagram of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model from another perspective;

[0029] Figure 3 A front view of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model;

[0030] Figure 4 A side view of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model;

[0031] Figure 5 A bottom view of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model;

[0032] Figure 6 It is a structural diagram of the existing upper support roller and support roller bearing seat;

[0033] Figure 7 This is an assembly cross-sectional view of the water retaining structure provided in an embodiment of the utility model.

[0034] In the picture:

[0035] 1 is a water retaining plate; 2 is a clamping plate; 3 is a lifting lug; 4 is an upper support roller; 5 is a support roller bearing seat. DETAILED DESCRIPTION

[0036] One of the core of the present invention is to provide a water retaining structure, the structural design of which enables it to reduce the corrosion of the mill cooling water on the mill equipment, avoid the mill cooling water other than the process requirements from falling onto the surface of the rolled product, and ensure the surface quality and performance of the product.

[0037] Another core of the utility model is to provide a rolling mill including the above-mentioned water retaining structure.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See also Figures 1 to 5 , Figure 1 A schematic structural diagram of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model from one perspective. Figure 2 This is a structural diagram of another perspective of the water retaining plate in the water retaining structure provided by an embodiment of the utility model. Figure 3 This is a front view of the water retaining plate in the water retaining structure provided by an embodiment of the utility model. Figure 4 A side view of a water retaining plate in a water retaining structure provided by an embodiment of the present utility model. Figure 5 A bottom view of a water retaining plate in a water retaining structure provided in an embodiment of the present utility model.

[0040] The present invention discloses a water retaining structure for a rolling mill, which includes an upper support roller 4 and a working roller group arranged in pairs below the upper support roller 4. Of course, it should be noted that the support rollers in the rolling mill are usually arranged in pairs, that is, the rolling mill includes an upper support roller 4 and a lower support roller arranged at intervals above and below, and the working roller group is arranged between the upper support roller 4 and the lower support roller, and the two ends of the upper support roller 4 and the two ends of the lower support roller are respectively supported by the support roller bearing seats 5. The working roller group includes a working roller bearing seat and an upper and lower working roller and a lower working roller arranged above and below. The upper support roller 4 contacts with the upper working roller above the upper working roller to provide support for the upper working roller, and the lower support roller contacts with the lower working roller below the lower working roller to provide support for the lower working roller. Under this structure, the cooling water on the upper working roller is easily thrown out by the upper support roller 4. Therefore, a water retaining structure is arranged above the upper support roller 4 in this case, and the water retaining structure includes a clamping structure and a water retaining plate 1.

[0041] Among them, a clamping structure is provided on the facing surfaces of the two support roller bearing seats 5 away from the end of the working roller group, and a matching structure is provided on one side surface of the water baffle 1. The matching structure is plugged into the clamping structure to fix the water baffle 1 between the two support roller bearing seats 5 away from the end of the working roller group. The side surface of the water baffle 1 away from the upper support roller 4 is not higher than the upper end surface of the support roller bearing seat 5. The shape and size of the water baffle 1 are designed according to the assembly size of the support roller 4 on the rolling mill. During the design process, versatility and interchangeability should be taken into consideration to reduce costs. And because it is related to water, the corrosion resistance of the water baffle 1 should be considered when selecting materials, and stainless steel is preferably used.

[0042] According to the assembly structure of the roller system in the rolling mill, during the high-speed rotation of the roller, it was observed that the cooling water of the rolling mill was thrown out from the surface of the upper support roller 4 after being transmitted through the roller system, and the upper support roller 4 also has a certain space for setting the water retaining structure. Therefore, in this application, the water retaining structure is designed to be installed on the support roller bearing seat 5 at both ends of the upper support roller 4, such as Figure 6 and Figure 7 As shown, compared with the prior art, the water retaining structure provided by the embodiment of the utility model is designed above the upper support roller 4, which can effectively solve the hidden dangers caused by water throwing off the roller in a simple, reliable and low-cost manner without changing the original equipment function, avoid the adverse effects of the mill cooling water on the mill equipment and the rolled strip, reduce the risk of production stoppage and pause, reduce product quality risks, and fault handling safety risks, thereby improving production efficiency.

[0043] It is not difficult to imagine that the support roller needs to be ground after being worn for a certain period of time, and the support roller bearing seat 5 needs to be separated from the support roller. At this time, the water baffle 1 needs to be removed from the support roller bearing seat 5. In order to facilitate the disassembly and assembly of the water baffle 1, in one embodiment of the present application, the clamping structure and the matching structure adopt a plug-in matching structure, such as Figures 1 to 5 As shown, the clamping structure is a clamping protrusion arranged on the facing surfaces of the two support roller bearing seats 5. The clamping protrusion can be welded on the support roller bearing seat 5, or it can be formed by using the screw holes on the support roller bearing seat 5 to install bolts or studs. The matching structure is a clamping plate 2, and a clamping groove is provided at the end of the clamping plate 2 away from the water baffle 1. The clamping groove includes but is not limited to an open groove or a circumferentially closed circular hole, a strip hole, etc. The clamping groove is clamped and matched with the clamping protrusion.

[0044] Alternatively, in another embodiment, the clamping structure can be reversed, with the clamping plate 2 being provided on the surfaces facing each other of the two support roller bearing seats 5, the upper end of the clamping plate 2 being provided with a clamping groove, the matching structure being a clamping protrusion, and the clamping groove and the clamping protrusion being clamped together.

[0045] To further optimize the above technical solution, in one embodiment of the present application, a plurality of snap-in protrusions symmetrically arranged about the axis of the upper support roller 4 are provided on the support roller bearing seat 5, or a plurality of snap-in plates 2 symmetrically arranged about the axis of the upper support roller 4 are provided on the support roller bearing seat 5. This enables the water retaining plate 1 to be evenly stressed, thereby preventing it from falling off the support roller bearing seat 5 due to uneven stress.

[0046] To facilitate the cooperation between the snapping groove and the snapping protrusion, in one embodiment of the present application, the snapping groove is an open U-shaped groove, and a guide structure is provided at the opening of the snapping groove. The width of the guide structure gradually increases from the bottom of the snapping groove to the opening direction of the snapping groove. The guide structure can increase the opening width of the open U-shaped groove, thereby making it easier for the snapping groove to cooperate with the snapping protrusion.

[0047] In order to achieve a good water-blocking effect, the upper support roller 4 is fully covered. In one embodiment of the present application, the edge shape of the water baffle 1 along the axial direction of the upper support roller 4 is adapted to the shape of the facing surfaces of the two support roller bearing seats 5, thereby reducing the gap between the water baffle 1 and the support roller bearing seats 5 to achieve a better water-sealing effect. At the same time, the distance between the water baffle 1 and other equipment in the rolling mill must be considered, which is required to be 10-15mm to prevent the distance from being too large and the water-blocking effect from being poor.

[0048] It is foreseeable that the support roller needs to be replaced after a certain period of use and needs to be pushed in and pulled out in the rolling mill. Therefore, the device must be considered to avoid interference with other rolling mill equipment during the movement of the support roller. In addition to the above-mentioned water retaining plate 1, the surface of the side away from the upper support roller 4 is not higher than the upper end surface of the support roller bearing seat 5. In one embodiment of the present application, the edge of the water retaining plate 1 along the direction parallel to the horizontal plane and perpendicular to the axis of the upper support roller 4 does not exceed the edge of the bearing seat of the upper support roller 4.

[0049] Further optimize the above technical solution, in order to facilitate the transportation of the water retaining plate 1, as Figure 1 、 Figure 3 and Figure 4 As shown, a lifting structure is provided on the surface of the water retaining plate 1 away from the upper support roller 4 .

[0050] Specifically, if Figure 1 、 Figure 3 and Figure 4 In the embodiment shown, the lifting structure includes lifting ears 3 arranged at the four corners of the surface of the side of the water retaining plate 1 away from the upper support roller 4, and lifting holes are provided on the lifting ears 3. Of course, it should be noted that the lifting structure is not limited to the above structure. The lifting structure can also be composed of structures such as hooks and rings, which are not limited here.

[0051] Since the span of the water retaining plate 1 is relatively large, in order to prevent the water retaining plate 1 from being deformed under the action of its own gravity and causing accidents due to friction with the upper support roller 4, in an embodiment of the present application, a reinforcing rib plate is provided on the surface of at least one side of the water retaining plate 1. The reinforcing rib plate can be provided along the periphery of the water retaining plate 1, and / or the reinforcing rib plates are provided crisscrossed on the water retaining plate 1.

[0052] An embodiment of the present application also provides a rolling mill, which includes a rolling mill arch, a support roll group and a working roll group. The support roll group includes a support roll bearing seat 5 and an upper support roll 4 and a lower support roll spaced apart above and below. The ends of the upper support roll 4 and the lower support roll are respectively supported by the support roll bearing seat 5. The working roll group includes a working roll bearing seat and an upper working roll and a lower working roll arranged above and below. The upper working roll and the lower working roll are arranged between the upper support roll 4 and the lower support roll. The ends of the upper working roll and the lower working roll are respectively supported by the working roll bearing seat. In addition, the rolling mill also includes the water retaining structure as described in the above embodiment. Since the rolling mill adopts the water retaining structure in the above embodiment, please refer to the above embodiment for the technical effect of the rolling mill.

[0053] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0054] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A water retaining structure for a rolling mill, comprising an upper support roll and a working roll group arranged in pairs below the upper support roll, wherein both ends of the upper support roll are supported by support roll bearing seats, and wherein: The water retaining structure comprises: A clamping structure, wherein the clamping structure is provided on one end of the facing surfaces of the two support roller bearing seats away from the working roller group; A water baffle, a mating structure is provided on one side surface of the water baffle, and the mating structure is plugged into and matched with the snap-in structure to fix the water baffle between the two support roller bearing seats away from one end of the working roller group, and the side surface of the water baffle away from the upper support roller is not higher than the upper end surface of the support roller bearing seat.

2. The water retaining structure according to claim 1, characterized in that: The clamping structure is a clamping protrusion provided on the surfaces facing each other of the two support roller bearing seats, and the matching structure is a clamping plate. A clamping groove is provided at one end of the clamping plate away from the water retaining plate, and the clamping groove is clamped and matched with the clamping protrusion; Alternatively, the clamping structure is a clamping plate arranged on the facing surfaces of the two support roller bearing seats, the upper end of the clamping plate is provided with a clamping groove, the matching structure is a clamping protrusion, and the clamping groove is clamped and matched with the clamping protrusion.

3. The water retaining structure according to claim 2, characterized in that: The support roller bearing seat is provided with a plurality of the clamping protrusions symmetrically arranged about the axis of the upper support roller, or the support roller bearing seat is provided with a plurality of the clamping plates symmetrically arranged about the axis of the upper support roller.

4. The water retaining structure according to claim 2, characterized in that: The clamping groove is an open U-shaped groove, and a guide structure is provided at the opening of the clamping groove. The width of the guide structure gradually increases along the bottom of the clamping groove to the opening of the clamping groove.

5. The water retaining structure according to any one of claims 1 to 4, characterized in that: The edge shape of the water retaining plate along the axial direction of the upper support roller is adapted to the shapes of the facing surfaces of the two support roller bearing seats.

6. The water retaining structure according to any one of claims 1 to 4, characterized in that: The edge of the water retaining plate in a direction parallel to the horizontal plane and perpendicular to the axis of the upper support roller does not exceed the edge of the upper support roller bearing seat.

7. The water retaining structure according to any one of claims 1 to 4, characterized in that: A lifting structure is provided on a surface of the water baffle at one side away from the upper support roller.

8. The water retaining structure according to claim 7, characterized in that: The lifting structure includes lifting ears arranged at four corners of a surface of a side of the water retaining plate away from the upper support roller.

9. The water retaining structure according to any one of claims 1 to 4, characterized in that: A reinforcing rib plate is provided on at least one side surface of the water retaining plate.

10. A rolling mill, characterized in that: The invention comprises a water retaining structure according to any one of claims 1 to 9.

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