Closed stand type steel two roll mill with adjustable roll gap

Abstract

The utility model provides closed frame type steel two roll mill of mill roll gap adjustable, including adjusting assembly, adjusting assembly is composed by screwdown mechanism and press mechanism, and screwdown mechanism is located the top of frame, and press mechanism is located the bottom of frame, roll system, roll system is located frame inside, and the upper roll of roll system is connected with screwdown mechanism, and the lower roll of roll system is connected with press mechanism, adjusting assembly is provided with two, two adjusting assemblies are located two ends of roll system respectively, balance assembly, balance assembly is provided with a plurality of, and every balance assembly is equipped with two output ends, and two output ends are respectively tightly pressed the bottom of upper roll and the top of lower roll, the utility model discloses beneficial effect has solved the high strength requirement of frame under big rolling force, can adjust the roll gap in the rolling process simultaneously, reduces or eliminates the roll gap error.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing equipment, and in particular relates to a closed-stand two-roll rolling mill for profile steel with adjustable roll gap. Background Technology

[0002] In recent years, with the increasing national emphasis on energy conservation and emission reduction in the steel industry, the sector has been significantly impacted. Many small and medium-sized steel mills have closed down, leading to higher requirements for newly built mills and a surge in the production of high-value-added products. In the steel industry, product precision determines quality, reputation, and sales volume. Only high-precision, high-quality products can build a reputation and secure sales for steel mills.

[0003] Short stress line rolling mills are generally used in section steel production lines due to their light weight and simple structure. However, their disadvantage is that they cannot be adjusted in real time during rolling; the roll gap must be adjusted in advance according to process requirements. If the rolling process is incorrect or roll gap deviation occurs during rolling, defective products will be produced, resulting in economic losses. Furthermore, although the stress line of a short stress line rolling mill is shorter, the rigidity and strength of its support frame are lower compared to a closed-stand mill. Utility Model Content

[0004] In view of this, the present invention aims to propose a closed-stand two-roll rolling mill with adjustable roll gap for structural steel, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A closed-stand two-high rolling mill for section steel with adjustable roll gap, including:

[0007] An adjustment assembly, comprising a pressing mechanism and a pressing mechanism, wherein the pressing mechanism is located at the top of the frame and the pressing mechanism is located at the bottom of the frame;

[0008] The roller system is located inside the frame. The upper roller of the roller system is connected to the pressing mechanism, and the lower roller of the roller system is connected to the pressing mechanism. There are two adjustment components, which are located at the two ends of the roller system respectively.

[0009] The balancing assembly is provided in multiple ways, and each balancing assembly has two output ends, which respectively press against the bottom of the upper roller and the top of the lower roller.

[0010] Furthermore, the frame is divided into an operating side and a transmission side, which are connected by a locking structure, and two adjustment components are located on the operating side and the transmission side of the frame, respectively.

[0011] Furthermore, the two pressing mechanisms located on the operating side and the transmission side are connected by a coupling, and the input shaft of the pressing mechanism located on the transmission side is fixedly connected to the power output end of the hydraulic horse.

[0012] Furthermore, support components are fixed at both ends of the upper and lower rolls, and a rotating hole is opened in the middle of the support components. A bearing is fixed inside the rotating hole, and the bearing sleeve is fixed inside the rotating hole. The two ends of the upper and lower rolls are inserted into the bearing sleeve.

[0013] A sliding component is fixedly provided on the side wall of the support assembly, and a friction plate corresponding to the sliding component is fixedly provided on the frame.

[0014] Furthermore, the sliding component includes:

[0015] A sliding plate is fixed on the end face of the support assembly near the frame, and the sliding plate is in contact with the friction plate;

[0016] A sliding block is fixed on the side of the sliding plate away from the roller system, and the end face of the sliding block near the sliding plate is in contact with the outer wall of the frame.

[0017] Furthermore, a limiting member corresponding to the sliding component is fixed on the frame. The limiting member is fixed to the outer wall of the frame, and a sliding groove corresponding to the sliding component is formed between the limiting member and the outer wall of the frame. The sliding component is movably disposed in the sliding groove.

[0018] Furthermore, a magnetostrictive linear displacement sensor for measuring the amount of compression is provided on the top of the transmission side of the frame.

[0019] Furthermore, a flat head for adjusting the horizontal position of the frame is fixed at the bottom of the transmission side of the frame.

[0020] Furthermore, a main body locking beam is fixedly provided at the bottom of the frame, and the two ends of the main body locking beam are respectively fixedly connected to the operating side and the transmission side of the frame.

[0021] Furthermore, the pressing mechanism includes:

[0022] The worm gear is rotatably connected to the inside of the frame;

[0023] The worm gear is located inside the frame and is connected to the worm. The frame has a movable hole coaxial with the worm gear. A pressing screw is installed in the movable hole. The inner wall of the worm gear has an internal thread corresponding to the pressing screw. The pressing screw is threaded to the inner side of the worm gear and moves along the direction of the movable hole. The pressing screw presses against the top of the upper roll.

[0024] Compared with the prior art, the closed-stand two-roll rolling mill with adjustable roll gap described in this utility model has the following beneficial effects: it solves the high strength requirements of the stand under high rolling force, and at the same time, the roll gap can be adjusted during the rolling process to reduce or eliminate roll gap error. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of the two-roll mill for profile steel according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the frame structure described in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the support component and sliding component structure described in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram showing the position of the pressing mechanism described in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the pressing mechanism described in an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Adjustment assembly; 11. Pressing mechanism; 12. Pressing mechanism; 111. Worm gear; 112. Worm wheel; 113. Pressing screw; 114. First pressure cover; 115. Second pressure cover; 116. Centering sleeve; 117. Anti-rotation key; 118. Pressure block; 119. Spherical pad; 2. Roller system; 3. Balancing assembly; 4. Frame; 41. Friction plate; 42. Limiting component; 43. Flat head; 44. Body locking beam; 5. Support assembly; 6. Sliding assembly; 61. Sliding plate; 62. Sliding block. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] A closed-stand, two-roll mill for 4-section steel with adjustable roll gap, including:

[0038] Adjustment component 1, which consists of pressing mechanism 11 and pressing mechanism 12, wherein pressing mechanism 11 is located at the top of frame 4 and pressing mechanism 12 is located at the bottom of frame 4;

[0039] Roll system 2, located inside frame 4, with upper roll connected to pressing mechanism 11 and lower roll connected to pressing mechanism 12; two adjustment components 1 are provided, located at opposite ends of roll system 2.

[0040] The balancing component 3 is provided in multiple ways. Each balancing component 3 has two output ends, which are respectively pressed against the bottom of the upper roller and the top of the lower roller.

[0041] The pressing mechanism 12 is specifically a servo cylinder. The housing of the servo cylinder is fixedly connected to the frame 4, and the power output end of the servo cylinder presses against the bottom of the lower roller.

[0042] The frame 4 is divided into an operating side and a transmission side, which are connected by a locking structure. The two adjustment components 1 are located on the operating side and the transmission side of the frame 4, respectively.

[0043] The two pressing mechanisms 11 located on the operating side and the transmission side are connected by a coupling. The input shaft of the pressing mechanism 11 located on the transmission side is fixedly connected to the power output end of the hydraulic horse.

[0044] Both ends of the upper and lower rolls are fixed with support components 5. A rotating hole is opened in the middle of the support component 5. A bearing is fixed in the rotating hole. The bearing sleeve is fixed inside the rotating hole. Both ends of the upper and lower rolls are inserted into the bearing sleeve.

[0045] A sliding component 6 is fixedly mounted on the side wall of the support component 5, and a friction plate 41 corresponding to the sliding component 6 is fixedly mounted on the frame 4. The friction plate 41 is a high-strength metal structural component used to improve the wear resistance of the friction parts and avoid damage caused by continuous friction.

[0046] The sliding component 6 includes:

[0047] Sliding piece 61, the sliding piece 61 is fixed on the end face of the support component 5 near the frame 4, and the sliding piece 61 is in contact with the friction piece 41;

[0048] The sliding block 62 is fixed on the side of the sliding plate 61 away from the roller system 2, and the end face of the sliding block 62 near the sliding plate 61 is in contact with the outer wall of the frame 4.

[0049] The sliding plate 61 is a high-strength metal structural component, the same as the friction plate 41. The sliding plate 61 and the friction plate 41 are in close contact with each other, and grease is applied between them. The sliding component 6 improves the smoothness of the support component 5 moving within the frame 4, thereby improving the stability of the roller system 2.

[0050] The frame 4 is fixedly provided with a limiting member 42 corresponding to the sliding component 6. The limiting member 42 is fixed to the outer wall of the frame 4, and a sliding groove corresponding to the sliding component 6 is formed between the limiting member 42 and the outer wall of the frame 4. The sliding component 6 is movably disposed in the sliding groove.

[0051] A magnetostrictive linear displacement sensor for measuring the amount of compression is installed on the top of the drive side of the frame 4. It is used to precisely control the amount of compression.

[0052] A flat head 43 for adjusting the horizontal position of the frame 4 is fixedly provided at the bottom of the transmission side of the frame 4.

[0053] The bottom of the frame 4 is fixedly provided with a main body locking beam 44, and the two ends of the main body locking beam 44 are fixedly connected to the operating side and the transmission side of the frame 4, respectively.

[0054] The pressing mechanism 11 includes:

[0055] Worm 111, which is rotatably connected to the inside of frame 4;

[0056] A worm gear 112 is located inside the frame 4 and is connected to the worm 111. The frame 4 has a movable hole coaxial with the worm gear 112. A pressing screw 113 is installed in the movable hole. The inner wall of the worm gear 112 has an internal thread corresponding to the pressing screw 113. The pressing screw 113 is threaded to the inner side of the worm gear 112 and moves along the direction of the movable hole. The pressing screw 113 presses against the top of the upper roll.

[0057] There are two pressing screws 113, each of which is equipped with a worm gear 112 and a worm 111. The two worms 111 are connected by a gear coupling. One of the worms 111 is connected to the power output end of the hydraulic motor through a rigid coupling. The housing of the hydraulic motor is fixedly connected to the frame 4.

[0058] The frame 4 has a rotating hole, and the worm 111 is located inside the rotating hole. Bearings are fixed at both ends of the rotating hole. The worm 111 is fixedly connected to the inner sleeve of the bearing. The worm 111 has a thread corresponding to the worm wheel 112 at the position between the two bearings. The worm 111 is connected to the worm wheel 112 through the thread.

[0059] A protective cover is provided at the end of the bearing away from the frame 4, and a sealed cavity is formed between the protective cover, the inner wall of the rotating hole, and the outer wall of the worm gear 111.

[0060] One end of the movable hole is fixed with a first pressure cap 114, and the other end is fixed with a second pressure cap 115. A bearing cavity corresponding to the worm gear 112 and the pressing screw 113 is formed between the second pressure cap 115 and the first pressure cap 114. A pair of centering sleeves 116 are provided in the bearing cavity. The worm gear 112 is located between the two centering sleeves 116. The outer side wall of the worm gear 112 is in contact with the inner side wall of the centering sleeve 116. The outer side wall of the centering sleeve 116 is in contact with the inner side wall of the movable hole.

[0061] An anti-rotation key 117 is fixed at one end of the lower screw 113 away from the upper roller. A keyway corresponding to the anti-rotation key 117 is opened on the inner wall of the moving hole. The anti-rotation key 117 is located inside the keyway and fits against the inner wall of the keyway.

[0062] A magnetic scale is fixed at the end of the lower screw 113 away from the upper roller, and the part located outside the moving hole is covered with a protective cover, which is fixedly connected to the frame 4.

[0063] A connecting assembly is provided between the upper roller and the lower screw 113. The connecting assembly includes a pressure block 118 and a spherical pad 119. The spherical pad 119 is fixedly connected to the upper roller, and the pressure block 118 is fixedly connected to the lower screw 113. The end face of the pressure block 118 away from the lower screw 113 is a convex arc surface, and the end face of the spherical pad 119 away from the upper roller is a concave arc surface. The convex arc surface and the concave arc surface are in contact.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A closed-stand (4) section steel two-roll rolling mill with adjustable roll gap, characterized in that, include: Adjustment component (1), which is composed of pressing mechanism (11) and pressing mechanism (12), the pressing mechanism (11) is located at the top of frame (4) and the pressing mechanism (12) is located at the bottom of frame (4); Roller system (2), the roller system (2) is located inside the frame (4), the upper roller of the roller system (2) is connected to the pressing mechanism (11), the lower roller of the roller system (2) is connected to the pressing mechanism (12), and there are two adjustment components (1), which are located at the two ends of the roller system (2). The balancing component (3) is provided in multiple ways. Each balancing component (3) has two output ends, which are respectively pressed against the bottom of the upper roller and the top of the lower roller.

2. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 1, characterized in that: The frame (4) is divided into an operating side and a transmission side, which are connected by a locking structure. Two adjustment components (1) are located on the operating side and the transmission side of the frame (4) respectively.

3. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 1, characterized in that: The two pressing mechanisms (11) located on the operating side and the transmission side are connected by a coupling. The input shaft of the pressing mechanism (11) located on the transmission side is fixedly connected to the power output end of the hydraulic horse.

4. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 1, characterized in that: The upper and lower rolls are fixedly provided with support components (5) at both ends. A rotating hole is opened in the middle of the support component (5). A bearing is fixedly provided in the rotating hole. The bearing sleeve is fixedly provided inside the rotating hole. The two ends of the upper and lower rolls are inserted into the bearing sleeve. A sliding assembly (6) is fixedly provided on the side wall of the support assembly (5), and a friction plate (41) corresponding to the sliding assembly (6) is fixedly provided on the frame (4).

5. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 4, characterized in that, The sliding component (6) includes: A sliding piece (61) is fixed on the end face of the support assembly (5) near the frame (4), and the sliding piece (61) is in contact with the friction piece (41); The sliding block (62) is fixed on the side of the sliding plate (61) away from the roller system (2), and the end face of the sliding block (62) near the sliding plate (61) is in contact with the outer wall of the frame (4).

6. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 4, characterized in that: The frame (4) is fixed with a limiting member (42) corresponding to the sliding component (6). The limiting member (42) is fixed to the outer wall of the frame (4), and a sliding groove corresponding to the sliding component (6) is formed between the limiting member (42) and the outer wall of the frame (4). The sliding component (6) is movably disposed in the sliding groove.

7. The closed-stand (4) section steel two-roll mill with adjustable roll gap according to claim 2, characterized in that: A magnetostrictive linear displacement sensor for measuring the amount of compression is provided on the top of the transmission side of the frame (4).

8. The closed-stand (4) section steel two-roll mill with adjustable roll gap according to claim 2, characterized in that: The bottom of the transmission side of the frame (4) is fixed with a flat head (43) for adjusting the horizontal position of the frame (4).

9. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 2, characterized in that: The bottom of the frame (4) is fixedly provided with a main body locking beam (44), and the two ends of the main body locking beam (44) are fixedly connected to the operating side and the transmission side of the frame (4) respectively.

10. The closed-stand (4) section steel two-roll rolling mill with adjustable roll gap according to claim 1, characterized in that, The pressing mechanism (11) includes: Worm (111), the worm (111) is rotatably connected to the inside of the frame (4); A worm gear (112) is located inside the frame (4) and is connected to the worm (111). The frame (4) has a movable hole coaxial with the worm gear (112). A pressing screw (113) is provided in the movable hole. The inner wall of the worm gear (112) has an internal thread corresponding to the pressing screw (113). The pressing screw (113) is threaded to the inner side of the worm gear (112) and moves along the direction of the movable hole. The pressing screw (113) presses against the top of the upper roll.

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