High-hardness working roll of multi-roll mill

Abstract

The high-hardness multi-roll mill working roll comprises a roll body, the roll body comprises an inner layer and an outer layer, a fixing plate is fixedly installed in the middle of the interior of the inner layer, a plurality of movable grooves are formed in the interior of the inner layer and the interior of the outer layer in a bilateral symmetry mode at equal angles, and a supporting plate is fixedly installed in an inner cavity of each movable groove. The inner layer and the outer layer are arranged, and the multiple movable grooves are formed between the inner layer and the outer layer, so that when any roller shaft is damaged, a worker extrudes the roller shaft on the side into the roller body through equipment, and at the moment, the baffles on the supporting shafts on the side can move to the other sides of the multiple positioning rods; and then the roller shaft on the side is popped out from the interior of the shaft body under the action of the first pre-tightening spring and the first pre-tightening plate, during installation, the roller shaft can abut against the multiple positioning rods through the limiting plate on the surface, the positioning rods limit the limiting plate under the action of the positioning plate and the second telescopic spring, and therefore the roller shaft is firmly fixed in the shaft body.

Description

Technical Field

[0001] The utility model relates to the technical field of forged steel rolls, in particular to a working roll of a high-hardness multi-roller rolling mill. Background Art

[0002] Forged steel rolls are produced by forging steel ingots. This roll manufacturing process effectively forges away metallurgical defects such as porosity and shrinkage within the ingot, while simultaneously breaking up coarse cast structures. The result is a high-quality roll with a dense structure and uniform composition. Compared to similar cast rolls, forged steel rolls offer superior toughness, surface hardness uniformity, and fatigue resistance. To meet the specific requirements of different rolling mills and rolling conditions, various alloying elements can be added to the roll steel to enhance roll performance.

[0003] When existing work rolls are damaged, they must be disassembled in their entirety, resulting in significant material loss. Damage typically occurs at the shafts at both ends of the work rolls, so disassembling the shafts can reduce losses. To address this, we propose high-hardness multi-roll mill work rolls to address these issues. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] Therefore, the purpose of the present invention is to provide a high-hardness multi-roll mill working roll, which can solve the problem that the existing working roll needs to be disassembled as a whole when damaged, resulting in large material loss. Generally, the damaged parts are the roller shafts at both ends of the working roll, so the loss can be reduced by disassembling the roller shafts.

[0006] In order to solve the above technical problems, the utility model provides a high-hardness multi-roll mill working roll, which adopts the following technical solution: it includes a roll body, the roll body includes an inner layer and an outer layer, a fixed plate is fixedly installed in the middle of the inner layer, and a plurality of movable grooves are opened in the inner and outer layers in a left-right symmetrical and equal-angle manner, each of the movable grooves is fixedly installed with a support plate, and a positioning rod is inserted into the surface of each support plate, and roll shafts are inserted on both sides of the roll body, and the ends of the two roll shafts that are close to each other are fixedly installed with support shafts, and the sides of the two support shafts that are close to each other are fixedly installed with limiting plates, and the side of the limiting plate away from the fixed plate is affixed to the surfaces of multiple positioning rods, and a baffle is slidingly provided on the surface of the support shaft, and the baffle surface and the bottom end of the positioning rod are both arc-shaped.

[0007] Optionally, a first telescopic spring is sleeved on the surface of the support shaft, and the first telescopic spring is located between the limit plate and the baffle. The side where the two roller shafts are close to each other is also an arc-shaped surface.

[0008] Optionally, a positioning plate is fixedly mounted on the top of each positioning rod, and a second telescopic spring is sleeved on the outside of each positioning rod, and the second telescopic spring is located between the bottom of the positioning plate and the top of the support plate.

[0009] Optionally, first telescopic rods are fixedly installed on both sides of the fixed plate, first pre-tensioning plates are fixedly installed on the ends of the two first telescopic rods that are away from each other, and first pre-tensioning springs are sleeved on the outside of the two first telescopic rods, and the first pre-tensioning springs are located between the fixed plate and the first pre-tensioning plates.

[0010] Optionally, a second telescopic rod is fixedly installed on the side where the two limit plates are close to each other, a second pre-tensioning plate is fixedly installed on the end where the two second telescopic rods are close to each other, and a second pre-tensioning spring is sleeved on the outside of the two second telescopic rods, and the second pre-tensioning spring is located between the limit plate and the second pre-tensioning plate.

[0011] Optionally, the first pre-tightening plate and the adjacent second pre-tightening plate are pressed against each other.

[0012] In summary, the utility model includes at least one of the following beneficial effects: 1. By setting an inner layer and an outer layer, and opening a plurality of movable grooves between the inner layer and the outer layer, when any roller is damaged, the staff uses the equipment to squeeze the roller on that side into the roller body. At this time, the baffle on the support shaft on that side can be moved to the other side of the multiple positioning rods, and then the roller on that side is popped out from the inside of the shaft body by the action of the first preload spring and the first preload plate. During installation, the roller can be pressed against the multiple positioning rods through the limiting plate on the surface, and the positioning rod is limited by the positioning plate and the second telescopic spring to limit the limiting plate, thereby firmly fixing the roller inside the shaft body, thereby realizing the rapid disassembly and installation of the roller.

[0013] 2. By setting the first telescopic rod, the first pre-tightening plate and the first pre-tightening spring, when the roller shaft is inserted into the shaft body, the second telescopic rod, the second pre-tightening plate and the second pre-tightening spring on the roller shaft generate an interaction force with the first telescopic rod, the first pre-tightening plate and the first pre-tightening spring, thereby improving the stability between the roller shaft and the shaft body, and at the same time making the roller shaft more stable when inserted into the shaft body and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0017] Figure 3 For the utility model Figure 2 A in the middle is an enlarged schematic diagram;

[0018] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0019] Explanation of the accompanying drawings: 1. Roller body; 2. Inner layer; 3. Outer layer; 4. Fixed plate; 5. Movable groove; 6. Support plate; 7. Positioning rod; 8. Roller shaft; 9. Support shaft; 10. Limiting plate; 11. Baffle; 12. First telescopic spring; 13. Positioning plate; 14. Second telescopic spring; 15. First telescopic rod; 16. First pre-tightening plate; 17. First pre-tightening spring; 18. Second telescopic rod; 19. Second pre-tightening plate; 20. Second pre-tightening spring. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 The utility model is described in further detail.

[0021] Example 1, refer to Figure 1-4 In this embodiment, in order to solve the problem that the existing working rolls need to be disassembled as a whole when damaged, which causes great material loss, and generally the damaged parts are the roller shafts at both ends of the working rolls, so the roller shafts can be disassembled to reduce the loss, the utility model discloses a high-hardness multi-roll mill working roll.

[0022] It includes a roller body 1, which includes an inner layer 2 and an outer layer 3. A fixed plate 4 is fixedly installed in the middle of the inner layer 2. A plurality of movable grooves 5 are symmetrically installed in the inner layer 2 and the outer layer 3 at equal angles. A support plate 6 is fixedly installed in the inner cavity of each movable groove 5. A positioning rod 7 is inserted into the surface of each support plate 6. Roller shafts 8 are inserted on both sides of the roller body 1. A support shaft 9 is fixedly installed on the end where the two roller shafts 8 are close to each other. A limiting plate 10 is fixedly installed on the side where the two support shafts 9 are close to each other. The side of the limiting plate 10 away from the fixed plate 4 is attached to the surface of the plurality of positioning rods 7. A baffle 11 is slidingly provided on the surface of the support shaft 9, and the surface of the baffle 11 and the bottom end of the positioning rod 7 are both arc-shaped.

[0023] A first telescopic spring 12 is sleeved on the surface of the support shaft 9 . The first telescopic spring 12 is located between the limit plate 10 and the baffle 11 . The side where the two roller shafts 8 are close to each other is also an arc-shaped surface. The first telescopic spring 12 is used to move the position of the baffle 11 .

[0024] A positioning plate 13 is fixedly mounted on the top of each positioning rod 7 , and a second telescopic spring 14 is sleeved on the outside of each positioning rod 7 . The second telescopic spring 14 is located between the bottom of the positioning plate 13 and the top of the support plate 6 .

[0025] First telescopic rods 15 are fixedly installed on both sides of the fixed plate 4, and first pre-tightening plates 16 are fixedly installed on the ends of the two first telescopic rods 15 away from each other, and first pre-tightening springs 17 are sleeved on the outside of the two first telescopic rods 15, and the first pre-tightening springs 17 are located between the fixed plate 4 and the first pre-tightening plates 16.

[0026] A second telescopic rod 18 is fixedly installed on the side where the two limit plates 10 are close to each other, and a second pre-tightening plate 19 is fixedly installed on the end where the two second telescopic rods 18 are close to each other, and a second pre-tightening spring 20 is sleeved on the outside of the two second telescopic rods 18, and the second pre-tightening spring 20 is located between the limit plate 10 and the second pre-tightening plate 19.

[0027] The first pre-tightening plate 16 and the adjacent second pre-tightening plate 19 are pressed against each other. When the first pre-tightening plate 16 and the second pre-tightening plate 19 are pressed against each other, the roller shaft 8 is more firmly fixed inside the shaft body.

[0028] The specific working principle is: first, by setting the inner layer 2 and the outer layer 3, and opening a plurality of movable grooves 5 between the inner layer 2 and the outer layer 3, when any roller shaft 8 is damaged, the staff uses the equipment to squeeze the roller shaft 8 on that side into the roller body 1, and at this time, the baffle 11 on the support shaft 9 on that side can be moved to the other side of the plurality of positioning rods 7, and then the roller shaft 8 on that side is ejected from the inside of the shaft body by the action of the first preload spring 17 and the first preload plate 16. During installation, the roller shaft 8 can be pressed against the plurality of positioning rods 7 through the limit plate 10 on the surface, and the positioning rods 7 are fixed. The positioning plate 13 and the second telescopic spring 14 limit the limiting plate 10, thereby firmly fixing the roller 8 inside the shaft body. By setting the first telescopic rod 15, the first pre-tightening plate 16 and the first pre-tightening spring 17, when the roller 8 is inserted into the shaft body, the second telescopic rod 18, the second pre-tightening plate 19 and the second pre-tightening spring 20 on the roller 8 generate an interaction force with the first telescopic rod 15, the first pre-tightening plate 16 and the first pre-tightening spring 17, thereby improving the stability between the roller 8 and the shaft body, and making the roller 8 more stable when inserted into the shaft body.

[0029] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-hardness multi-roll mill working roll, comprising a roll body (1), characterized in that: The roller body (1) comprises an inner layer (2) and an outer layer (3), a fixed plate (4) is fixedly installed in the middle of the inner layer (2), a plurality of movable grooves (5) are opened in the inner layer (2) and the outer layer (3) at left and right symmetry and equal angles, a support plate (6) is fixedly installed in the inner cavity of each movable groove (5), a positioning rod (7) is inserted on the surface of each support plate (6), roller shafts (8) are inserted on both sides of the roller body (1), a support shaft (9) is fixedly installed on the end of the two roller shafts (8) that are close to each other, a limiting plate (10) is fixedly installed on the side of the two support shafts (9) that are close to each other, the limiting plate (10) is affixed to the surface of the plurality of positioning rods (7) on the side away from the fixed plate (4), a baffle (11) is slidably provided on the surface of the support shaft (9), and the surface of the baffle (11) and the bottom end of the positioning rod (7) are both arc-shaped.

2. The high-hardness working roll of a cluster mill according to claim 1, characterized in that: The surface of the support shaft (9) is sleeved with a first telescopic spring (12), and the first telescopic spring (12) is located between the limit plate (10) and the baffle (11). The side where the two roller shafts (8) are close to each other also has an arc-shaped surface.

3. The high-hardness working roll of a cluster mill according to claim 1, characterized in that: A positioning plate (13) is fixedly mounted on the top of each positioning rod (7), and a second telescopic spring (14) is sleeved on the outside of each positioning rod (7), wherein the second telescopic spring (14) is located between the bottom of the positioning plate (13) and the top of the support plate (6).

4. The high-hardness working roll of a cluster mill according to claim 1, characterized in that: First telescopic rods (15) are fixedly mounted on both sides of the fixed plate (4), first pre-tightening plates (16) are fixedly mounted on the ends of the two first telescopic rods (15) that are away from each other, and first pre-tightening springs (17) are sleeved on the outsides of the two first telescopic rods (15), and the first pre-tightening springs (17) are located between the fixed plate (4) and the first pre-tightening plates (16).

5. The high-hardness working roll of a cluster mill according to claim 4, characterized in that: A second telescopic rod (18) is fixedly mounted on one side of the two limit plates (10) that are close to each other, a second pre-tightening plate (19) is fixedly mounted on one end of the two second telescopic rods (18) that are close to each other, and a second pre-tightening spring (20) is sleeved on the outside of the two second telescopic rods (18), and the second pre-tightening spring (20) is located between the limit plate (10) and the second pre-tightening plate (19).

6. The high-hardness working roll of a cluster mill according to claim 5, characterized in that: The first pre-tightening plate (16) and the adjacent second pre-tightening plate (19) are pressed against each other.

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