Screw-down device of section mill

Abstract

The utility model provides a screw-down device of a section mill, which comprises a worm, a screw-down rod, a screw-down rod, a screw-down rod and a screw-down rod, the worm gear is located on the inner side of the supporting frame and connected with the worm in a matched mode, a moving hole coaxial with the worm gear is formed in the supporting frame, a downward-pressing screw rod is arranged in the moving hole, and internal threads corresponding to the downward-pressing screw rod are formed in the inner side wall of the worm gear; the pressing screw rod is in threaded connection with the inner side of the worm wheel and moves in the forming direction of the moving hole; and the roller system is arranged corresponding to the downward pressing screw rod, and the downward pressing screw rod drives the roller system to move. The rolling specification adjusting device has the advantages that the rolling specification is adjusted through the worm gear and the worm, and a finer rolling specification adjusting function is provided through matching of the worm gear and the worm.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of rolling mill equipment, especially a section steel rolling mill screwdown device. BACKGROUND

[0002] With the great improvement of China's economic strength and comprehensive national strength, the proportion of main economic and social total indicators in the world continues to increase, and the living standards of Chinese people have been greatly improved, which has greatly promoted the development of the construction, manufacturing and transportation industries. Steel enterprises, as upstream enterprises of these industries, have also benefited greatly, and have therefore developed greatly. At the same time, high-quality steel has also been increasingly favored by the market. Steel, as a widely used material, plays an extremely important role in industry, agriculture, automobiles, construction, manufacturing and even aerospace. The production level of steel is an important indicator of the modernization level of a country.

[0003] In the prior art, the press roller of the rolling mill cannot adjust the height, resulting in that the rolling size of the rolling mill is fixed and cannot adapt to the production requirements of multiple sizes. The down-pressing structure realized by the cylinder and other equipment is often welded to the equipment. When the power assembly is damaged, it is difficult to maintain. Moreover, the down-pressing range cannot be finely controlled, and the device is often an integrated structure, resulting in that the maintenance and repair of the equipment are time-consuming and laborious. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a section steel rolling mill screwdown device to solve at least one of the above technical problems.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A section steel rolling mill screwdown device comprises:

[0007] A worm is rotationally connected to the inner side of a support frame.

[0008] A worm wheel is located on the inner side of the support frame and is connected with the worm. A moving hole coaxial with the worm wheel is formed in the support frame. A down-pressing screw rod is arranged in the moving hole. An inner thread corresponding to the down-pressing screw rod is formed on the inner side wall of the worm wheel. The down-pressing screw rod is threadedly connected to the inner side of the worm wheel and moves along the direction in which the moving hole is formed.

[0009] A roller system is arranged corresponding to the down-pressing screw rod. The down-pressing screw rod drives the roller system to move.

[0010] Further, the down-pressing screw rod is provided with two down-pressing screw rods, each of which is provided with a worm wheel and a worm. The two worms are connected through a toothed coupling. One of the worms is connected with the power output end of a hydraulic motor through a steel coupling. The shell of the hydraulic motor is fixedly connected with the support frame.

[0011] Further, the support frame is provided with a rotating hole, the worm is located inside the rotating hole, both ends of the rotating hole are fixedly provided with bearings, the worm is fixedly connected with the inner sleeve of the bearing, the worm is provided with a thread corresponding to the worm wheel at a position between the two bearings, and the worm is connected with the worm wheel through the thread.

[0012] Further, the end of the bearing away from the support frame is provided with a protective cover, and the protective cover, the inner side wall of the rotating hole and the outer side wall of the worm form a closed cavity.

[0013] Further, one end of the moving hole is fixedly provided with a first gland, the other end is fixedly provided with a second gland, the second gland and the first gland form a bearing cavity corresponding to the worm wheel and the down screw, the bearing cavity is provided with a pair of centering sleeves, the worm wheel is located between the two centering sleeves, the outer side wall of the worm wheel is attached to the inner side wall of the centering sleeve, and the outer side wall of the centering sleeve is attached to the inner side wall of the moving hole.

[0014] Further, the end of the down screw away from the roller system is fixedly provided with an anti-rotation key, the inner side wall of the moving hole is provided with a key groove corresponding to the anti-rotation key, and the anti-rotation key is located inside the key groove and attached to the inner side wall of the key groove.

[0015] Further, the end of the down screw away from the roller system is fixedly provided with a magnetic ruler, the part located outside the moving hole is wrapped with a protective cover, and the protective cover is fixedly connected with the support frame.

[0016] Further, the roller system and the down screw are provided with a connecting assembly, the connecting assembly comprises a pressing block and a spherical pad, the spherical pad is fixedly connected with the roller system, and the pressing block is fixedly connected with the down screw; the end face of the pressing block away from the down screw is a convex arc face, the end face of the spherical pad away from the roller system is a concave arc face, and the convex arc face is attached to the concave arc face.

[0017] Further, the spherical pad is fixedly connected with the roller system through an adjusting mechanism, the adjusting mechanism comprises a sliding rail and a sliding block, the sliding rail is fixedly connected with the roller system, and the sliding block is fixedly connected with the spherical pad; the end face of the sliding block away from the spherical pad is provided with a sliding groove, the sliding rail is located inside the sliding groove, and the sliding block is provided with a stabilizing bolt on both sides.

[0018] Further, the sliding rail is provided with a plurality of stabilizing grooves, the sliding block is fixedly connected with a stabilizing plate on both sides, the stabilizing plate is provided with a stabilizing hole, the stabilizing bolt is threadedly connected to the inside of the stabilizing hole, the stabilizing bolt penetrates through the stabilizing hole and is inserted into the inside of the stabilizing groove, and the stabilizing bolt is tightly pressed against the bottom face of the stabilizing groove.

[0019] Compared with the prior art, the down device of the profile steel rolling mill has the following beneficial effects:

[0020] Under the action of the device, the compression roller of the rolling mill can be freely adjusted in height, thereby adapting to the production requirements of multiple sizes, when the power assembly is damaged or any structural part is damaged, the device can be disassembled and decomposed, thereby realizing the replacement function of the damaged structural part, improving the durability of the equipment, the down pressure range of the compression roller can be finely controlled, and better rolling specification adjustment function is provided. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein in their entirety. The embodiments of the application, together with its drawings, illustrate the principles of the application and are not intended to limit its scope in an inappropriate manner. In the drawings:

[0022] Figure 1 The device overall structure schematic view is described in the embodiment of the application;

[0023] Figure 2 The worm part structure schematic view is described in the embodiment of the application;

[0024] Figure 3 The turbine and down pressure screw part structure schematic view is described in the embodiment of the application;

[0025] Figure 4 The anti-rotation key part structure schematic view is described in the embodiment of the application;

[0026] Figure 5 The adjusting mechanism part structure schematic view is described in the embodiment of the application.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1, worm; 2, worm gear; 3, roller system; 4, support frame; 5, down pressure screw; 6, tooth coupling; 7, steel coupling; 8, hydraulic motor; 9, bearing; 10, first gland; 11, second gland; 12, centering sleeve; 13, anti-rotation key; 14, magnetic ruler; 15, protective cover; 16, compression block; 17, spherical surface pad; 18, adjusting mechanism; 181, slide rail; 182, sliding block; 183, stabilizing plate; 184, stabilizing hole; 185, stabilizing groove. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0030] 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.

[0031] 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.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1-5 As shown: A section steel rolling mill pressing device, comprising:

[0034] Worm 1, which is rotatably connected to the inner side of support frame 4;

[0035] Worm gear 2, which is located inside the support frame 4 and is connected to the worm 1. The support frame 4 has a movable hole coaxial with the worm gear 2. A pressing screw 5 is provided in the movable hole. The inner wall of the worm gear 2 has an internal thread corresponding to the pressing screw 5. The pressing screw 5 is threaded to the inner side of the worm gear 2 and moves along the direction of the movable hole.

[0036] Roller system 3 is configured in correspondence with pressing screw 5, and pressing screw 5 drives roller system 3 to move.

[0037] The lower pressing screw 5 is provided with two, two lower pressing screws 5 are provided with one worm gear 2 and one worm 1 respectively, two worms 1 are connected through a toothed coupling 6, one of the worms 1 is connected with the power output end of the hydraulic motor 8 through a steel coupling 7, the shell of the hydraulic motor 8 is fixedly connected with the support frame 4.

[0038] The support frame 4 is provided with a rotating hole, the worm 1 is located inside the rotating hole, both ends of the rotating hole are fixedly provided with bearings 9, the worm 1 is fixedly connected with the inner sleeve of the bearing 9, the worm 1 is provided with a thread corresponding to the worm gear 2 at a position between the two bearings 9, the worm 1 is connected with the worm gear 2 through the thread.

[0039] The end of the bearing 9 away from the support frame 4 is provided with a protective cover, the protective cover, the inner side wall of the rotating hole and the outer side wall of the worm 1 form a closed cavity.

[0040] One end of the moving hole is fixedly provided with a first gland 10, the other end is fixedly provided with a second gland 11, the second gland 11 and the first gland 10 form a bearing cavity corresponding to the worm gear 2 and the lower pressing screw 5, a pair of centering sleeves 12 are arranged in the bearing cavity, the worm gear 2 is located between the two centering sleeves 12, the outer side wall of the worm gear 2 is fitted with the inner side wall of the centering sleeve 12, and the outer side wall of the centering sleeve 12 is fitted with the inner side wall of the moving hole.

[0041] The end of the lower pressing screw 5 away from the roller system 3 is fixedly provided with an anti-rotation key 13, the inner side of the anti-rotation key 13 is located in the key groove on the inner side wall of the moving hole and fitted with the inner side wall of the key groove.

[0042] The end of the lower pressing screw 5 away from the roller system 3 is fixedly provided with a magnetic ruler 14, the part outside the moving hole is wrapped with a protective cover 15, and the protective cover 15 is fixedly connected with the support frame 4.

[0043] The connection assembly is arranged between the roller system 3 and the lower pressing screw 5, the connection assembly comprises a pressing block 16 and a spherical pad 17, the spherical pad 17 is fixedly connected with the roller system 3, and the pressing block 16 is fixedly connected with the lower pressing screw 5; the end face of the pressing block 16 away from the lower pressing screw 5 is a convex arc surface, the end face of the spherical pad 17 away from the roller system 3 is a concave arc surface, and the convex arc surface is fitted with the concave arc surface; when the roller system 3 is in the process of rolling, the two arc surfaces realize the function of slight deviation, provide more uniform and stable pressing force, prevent the deviation of the roller system 3 caused by the friction of the to-be-rolled piece to the roller system 3, and further prevent the unstable pressing force.

[0044] The spherical pad 17 is fixedly connected to the roller system 3 via an adjustment mechanism 18. The adjustment mechanism 18 includes a slide rail 181 and a slider 182. The slide rail 181 is fixedly connected to the roller system 3, and the slider 182 is fixedly connected to the spherical pad 17. A groove is formed on the end face of the slider 182 away from the spherical pad 17. The slide rail 181 is located inside the groove. Stabilizing bolts are provided on both sides of the slider 182, and the stabilizing bolts are tightened against the slide rail 181.

[0045] The slide rail 181 has multiple stabilizing grooves 185. Stabilizing plates 183 are fixedly connected to both sides of the slider 182. Stabilizing holes 184 are opened on the stabilizing plates 183. Stabilizing bolts are threaded into the inside of the stabilizing holes 184. The stabilizing bolts pass through the stabilizing holes 184 and are inserted into the inside of the stabilizing grooves 185, and press against the bottom surface of the stabilizing grooves 185.

[0046] Working process: The hydraulic motor 8 drives the worm gear 1 to rotate. The two worm gears 1 are connected by a gear coupling 6. The worm gear 1 drives the worm wheel 2 to rotate. The worm wheel 2 is connected to the pressing screw through a trapezoidal thread. The rotation of the worm wheel 2 drives the pressing screw to move up and down. An anti-rotation key 13 is installed on the top of the pressing screw. The anti-rotation key 13 moves up and down in the keyway of the support frame 4 to prevent the pressing screw from rotating itself during the up and down movement. A spherical pad 17 and a pressure block 16 are installed below the pressing screw. The pressure block 16 acts on the bearing 9 seat of the rolling mill roll system 3 to provide rolling force to the rolling mill.

[0047] 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.

[0048] 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 section steel rolling mill pressing device, characterized in that, include: Worm (1), the worm (1) is rotatably connected to the inside of the support frame (4); Worm gear (2), the worm gear (2) is located inside the support frame (4) and is connected to the worm (1). The support frame (4) has a movable hole coaxial with the worm gear (2). A pressing screw (5) is provided in the movable hole. The inner wall of the worm gear (2) has an internal thread corresponding to the pressing screw (5). The pressing screw (5) is threaded to the inner side of the worm gear (2) and moves along the direction of the movable hole. Roller system (3), the roller system (3) is arranged correspondingly to the pressing screw (5), the pressing screw (5) drives the roller system (3) to move; The end of the pressing screw (5) away from the roller system (3) is fixed with an anti-rotation key (13). The inner wall of the moving hole is provided with a keyway corresponding to the anti-rotation key (13). The anti-rotation key (13) is located inside the keyway and fits against the inner wall of the keyway. A connecting assembly is provided between the roller system (3) and the pressing screw (5). The connecting assembly includes a pressure block (16) and a spherical pad (17). The spherical pad (17) is fixedly connected to the roller system (3), and the pressure block (16) is fixedly connected to the pressing screw (5). The end face of the pressure block (16) away from the pressing screw (5) is a convex arc surface, and the end face of the spherical pad (17) away from the roller system (3) is a concave arc surface. The convex arc surface and the concave arc surface are in contact. The spherical pad (17) is fixedly connected to the roller system (3) through the adjustment mechanism (18). The adjustment mechanism (18) includes a slide rail (181) and a slider (182). The slide rail (181) is fixedly connected to the roller system (3), and the slider (182) is fixedly connected to the spherical pad (17). A groove is opened on the end face of the slider (182) away from the spherical pad (17). The slide rail (181) is located inside the groove. Stabilizing bolts are provided on both sides of the slider (182), and the stabilizing bolts tighten the slide rail (181).

2. The section steel rolling mill pressing device according to claim 1, characterized in that: There are two pressing screws (5), each of which is equipped with a worm gear (2) and a worm (1). The two worms (1) are connected by a gear coupling (6). One of the worms (1) is connected to the power output end of the hydraulic motor (8) through a rigid coupling (7). The housing of the hydraulic motor (8) is fixedly connected to the support frame (4).

3. The section steel rolling mill pressing device according to claim 1, characterized in that: The support frame (4) has a rotating hole, and the worm (1) is located inside the rotating hole. Both ends of the rotating hole are fixed with bearings (9). The worm (1) is fixedly connected to the inner sleeve of the bearing (9). The worm (1) has a thread corresponding to the worm wheel (2) at the position between the two bearings (9). The worm (1) is connected to the worm wheel (2) through the thread.

4. The section steel rolling mill pressing device according to claim 3, characterized in that: The bearing (9) is provided with a protective cover at the end away from the support 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 (1).

5. The section steel rolling mill pressing device according to claim 1, characterized in that: One end of the movable hole is fixed with a first pressure cap (10), and the other end is fixed with a second pressure cap (11). The second pressure cap (11) and the first pressure cap (10) form a bearing cavity corresponding to the worm gear (2) and the pressing screw (5). A pair of centering sleeves (12) are provided in the bearing cavity. The worm gear (2) is located between the two centering sleeves (12). The outer side wall of the worm gear (2) is in contact with the inner side wall of the centering sleeve (12). The outer side wall of the centering sleeve (12) is in contact with the inner side wall of the movable hole.

6. The section steel rolling mill pressing device according to claim 1, characterized in that: A magnetic ruler (14) is fixed at one end of the pressing screw (5) away from the roller system (3), and the part located outside the moving hole is covered with a protective cover (15). The protective cover (15) is fixedly connected to the support frame (4).

7. The section steel rolling mill pressing device according to claim 1, characterized in that: The slide rail (181) has multiple stabilizing grooves (185). Stabilizing plates (183) are fixedly connected to both sides of the slider (182). Stabilizing holes (184) are opened on the stabilizing plates (183). Stabilizing bolts are threaded into the inside of the stabilizing holes (184). The stabilizing bolts penetrate the stabilizing holes (184), insert into the inside of the stabilizing grooves (185), and press against the bottom surface of the stabilizing grooves (185).

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