Roll changing device of rolling mill

Abstract

The invention discloses a roll changing device of a rolling mill, relates to the technical field of roll changing of rolling mills, and aims to solve the problems that the labor intensity is high, certain potential safety hazards exist and the production efficiency is influenced when a working roll needs to be manually lifted and changed by multiple persons when being replaced at present. Comprising a roller changing table, a lifting supporting frame, a supporting limiting assembly and a driving assembly, and the lifting supporting frame is fixedly connected to the lower portion of the roller changing table and used for adjusting the height of the roller changing table and supporting the roller changing table; the supporting and limiting assembly is horizontally and movably arranged on the roller changing table and used for moving to the position below a roller to support and limit the roller. The driving assembly is arranged on the roller changing table, and the driving end of the driving assembly is connected with the supporting and limiting assembly and used for driving the supporting and limiting assembly to move on the roller changing table.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill roll changing, and in particular to a rolling mill roll changing device. Background Art

[0002] Rolling technology is a widely used metal forming method. It uses one or more pairs of rollers to apply positive pressure to metal sheets to reduce the thickness and increase the length of metal sheets. It is widely used in the production of various profiles, plates and pipes. In the field of metal plastic processing, especially in the steel industry, rolling technology occupies a dominant position, and its application ratio exceeds 90%.

[0003] In rolling technology, asymmetric rolling has been favored in recent years because of its advantages of reducing rolling pressure, improving thickness accuracy of rolled strip steel, reducing passes and saving energy. According to the asymmetry between the rolling mill and the rolled product, asymmetric rolling can be divided into the following three cases: asynchronous rolling, different diameter rolling and heterogeneous metal composite rolling.

[0004] When changing rolls in existing rolling mills, multiple people are required to manually lift and change rolls, which is labor-intensive, poses certain safety hazards, and affects production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a rolling mill roll changing device to solve the problem that when replacing the working rolls, multiple people are required to cooperate in manually lifting and changing the rolls, which not only causes high labor intensity, but also poses certain safety hazards and affects production efficiency.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A rolling mill roll changing device, comprising: Roller changing station; A lifting support frame, which is fixedly connected to the bottom of the roller changing platform and is used to adjust the height of the roller changing platform and support the roller changing platform; A support and limit assembly is horizontally movable and arranged on the roll changing table, and is used to move under the roll to support and limit the roll; The driving assembly is arranged on the roller changing platform, and the driving assembly is fixedly connected to the supporting and limiting assembly, and is used for driving the supporting and limiting assembly to move on the roller changing platform.

[0007] Optionally, in the above-mentioned rolling mill roll changing device, the support and limiting assembly includes: The first supporting component is horizontally movably arranged on the roll changing table and is connected to the driving end of the driving component. At least two relatively arranged limiting protrusions are arranged on the first supporting component. The two limiting protrusions are used to accommodate the rolling roller and limit the rolling roller in a horizontal plane along a moving direction perpendicular to the support limiting component.

[0008] Optionally, in the above-mentioned rolling mill roll changing device, a side of the first supporting component provided with the limiting protrusion is provided with a receiving groove, and the supporting limiting assembly further comprises: A lifting component, the lifting component is fixedly arranged in the accommodating groove; The second supporting component is provided with at least two limiting through holes, the limiting through holes correspond to the limiting protrusions one by one, the second supporting component is vertically movably connected to the top of the first supporting component through the cooperation of the limiting through holes and the limiting protrusions, and the second supporting component is in contact with the lifting component.

[0009] Optionally, in the above rolling mill roll changing device, the driving assembly includes: Two brackets, which are fixed on the roller changing table; A first drive motor, the first drive motor is fixedly arranged on the roller changing table and is located at an end away from the bracket; A lead screw, both ends of which are rotatably connected to the two brackets respectively, and one end of the lead screw passes through the bracket and is fixedly connected to the output shaft of the first drive motor; The slider is arranged on the roller changing platform and is threadedly connected with the lead screw. The support and limiting assembly is fixedly connected to the slider.

[0010] Optionally, in the above rolling mill roll changing device, the rolling mill roll changing device further comprises: The guide assembly is fixedly arranged on the roller changing platform, and the guide assembly cooperates with the support and limit assembly for guiding.

[0011] Optionally, in the above-mentioned rolling mill roll changing device, the guide assembly includes: A directional guide rail, which is fixed on the roller changing table; The slide is slidably connected to the directional guide rail, the slide is fixedly connected to the bottom of the support and limit assembly, and the slide is used to cooperate with the directional guide rail to guide the support and limit assembly.

[0012] Optionally, in the above-mentioned rolling mill roll changing device, the lifting support frame includes: A bottom support tube, with a through hole formed on one side of the bottom support tube; A support arm, one end of which is movably disposed in the bottom support tube along the axial direction of the bottom support tube, and a rack is disposed on the side of the support arm opposite to the through hole; The transmission lifting mechanism is fixedly connected to the bottom support tube. The transmission lifting mechanism includes a second drive motor, a worm, a worm wheel and a gear. The second drive motor drives the worm wheel through the worm. The gear is coaxially fixed with the worm wheel and passes through the through hole to engage with the rack, so as to drive the support arm to move axially along the bottom support tube.

[0013] Optionally, in the above-mentioned rolling mill roll changing device, the lifting support frame includes: a base; A hydraulic cylinder, one end of which is fixedly arranged on the base, and the other end is fixedly connected to the roll changing platform. The hydraulic cylinder is used to provide the force for lifting and lowering the roll changing platform; The lifting bracket comprises a fixed part and a movable part, one end of the fixed part is fixedly arranged on the base, one end of the movable part is vertically movably connected to the other end of the fixed part, and the other end of the movable part is fixedly connected to the roller changing platform.

[0014] Optionally, in the above rolling mill roll changing device, the rolling mill roll changing device further comprises: A switch assembly, the switch assembly is electrically connected to the lifting component, the lifting support frame and the driving component, and is used to control the start, stop and switching of the movement state of the lifting component, the lifting support frame and the driving component; A power supply component is electrically connected to the switch component and is used to supply power to the control component.

[0015] Optionally, in the above rolling mill roll changing device, the rolling mill roll changing device further comprises: The control module is in communication with the lifting component, the lifting support frame and the driving component, and is used to control the operation of the lifting component, the lifting support frame and the driving component.

[0016] Compared with the prior art, the present invention provides a rolling mill roll changing device, in which a lifting support frame is fixedly connected to the bottom end of the roll changing table, and a support limit assembly and a drive assembly are arranged on the roll changing table. When disassembling the rolls, first move the rolling mill roll changing device to the side of the rolling mill, adjust the lifting support frame so that the roll changing table reaches a suitable operating height to ensure that the relative height with the rolls is adapted. Afterwards, the drive assembly operates to drive the support limit assembly to move to just below the rolls, and adjust the lifting support frame again to raise the roll changing table until the support limit assembly contacts the rolls to be disassembled, and then carries the disassembled rolls, lowers the roll changing table, and moves the support limit assembly relative to the rolling mill to complete the disassembly of the rolls; when installing new rolls, first adjust the lifting support frame so that the height of the support limit assembly is the same as the height of the roll frame, and roll the rolls onto the support limit assembly to achieve the limit. Then, the rolling mill roll changing device is moved to the rolling mill, the driving assembly is operated, the driving support limit assembly is moved to the position directly below the installation location, and the height of the lifting support frame is adjusted again until the roller is flush with the installation position of the rolling mill frame, and then the normal locking process is adopted to lock and fix the roller on the rolling mill to complete the installation of the new roller. Compared with the prior art, the beneficial effect of using the rolling mill roll changing device provided by the present invention is that when changing the rolling mill roll, the roller can be replaced by operating the rolling mill roll changing device, without manual lifting and adjustment of the roller, which reduces the labor intensity and the safety hazards caused by the cooperation of multiple people, and at the same time improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of an overall stereogram of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 2 A schematic perspective view of a frame of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 3 It is a schematic perspective view of a support and limiting assembly of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 4 It is a schematic diagram of an exploded view of a support and limiting assembly of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 5 A schematic diagram of a power supply assembly of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 6 It is a schematic diagram of a specific use of a rolling mill roll changing device provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of a lifting support frame of a rolling mill roll changing device provided by an embodiment of the present invention; Figure 8 A schematic structural diagram of another embodiment provided by the present invention; Fig. 9 A flowchart of an embodiment of the present invention using a control module to automatically disassemble a roller; Fig.10 A flow chart of an embodiment of the present invention using a control module to automatically install a roller.

[0018] Figure numerals: 110 is a roller changing table, 120 is a lifting support frame, 121 is a bottom support cylinder, 122 is a support arm, 1221 is a rack, 123 is a transmission lifting mechanism, 1231 is a second drive motor, 1232 is a worm, 1233 is a worm wheel, 1234 is a gear, 1235 is a support, 1236 is a concentric shaft, 1237 is a gear box, 1238 is a gear box cover, 1239 is a through hole, 130 is a bottom plate, 140 is a reinforcement rod, 150 is a pulley, 2 is a support limit assembly, 210 is a first Support component, 211 is a limiting protrusion, 212 is a receiving groove, 220 is a lifting component, 230 is a second supporting component, 231 is a limiting perforation, 3 is a driving component, 310 is a bracket, 320 is a first driving motor, 330 is a lead screw, 340 is a slider, 4 is an anti-slip pad, 5 is a guide component, 510 is a directional guide rail, 520 is a slide, 6 is a power supply component, 610 is a power supply box, 620 is a battery, 630 is a switch panel, 7 is a rolling mill, 8 is a roller, 9 is a hydraulic cylinder, and 10 is a lifting bracket. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1 and Figure 2 The rolling mill roll changing device provided in the embodiment of the present invention includes: a roll changing platform 110, a lifting support frame 120, a support and limit assembly 2 and a driving assembly 3, wherein the lifting support frame 120 is fixedly connected to the bottom of the roll changing platform 110, the support and limit assembly 2 is horizontally movable and arranged on the roll changing platform 110, and the support and limit assembly 2 is used to move to the bottom of the roll 8 to support and limit the roll 8; the driving assembly 3 is arranged on the roll changing platform 110, and the driving assembly 3 is fixedly connected to the support and limit assembly 2, and is used to drive the support and limit assembly 2 to move on the roll changing platform 110.

[0025] For specific implementation: please refer to Figure 1 and Figure 6 The rolling mill roll changing device provided by the present invention has a lifting support frame 120 fixedly connected to the bottom end of the roll changing platform 110, and a support limit assembly 2 and a drive assembly 3 are arranged on the roll changing platform 110. When the roll 8 is disassembled, the rolling mill roll changing device is first moved to the side of the rolling mill 7, and the lifting support frame 120 is adjusted to make the roll changing platform 110 reach a suitable operating height to ensure that the relative height with the roll 8 is adapted. After that, the drive assembly 3 operates to drive the support limit assembly 2 to move to the right below the roll 8, and the lifting support frame 120 is adjusted again to make the roll changing platform 110 rise until the support limit assembly 2 contacts the roll 8 to be disassembled, and then the roll 8 is disassembled; when installing a new roll 8, the lifting support frame 120 is first adjusted to make the height of the support limit assembly 2 the same as the height of the roll frame, and the roll 8 is rolled onto the support limit assembly 2 to achieve limit. Then, the rolling mill roll changing device is moved to the rolling mill 7, the driving assembly 3 is operated, and the driving support limit assembly 2 is moved to the position directly below the installation position, and the height of the lifting support frame 120 is adjusted again until the roll 8 is flush with the installation position of the rolling mill frame, and then the normal locking process is adopted to lock and fix the roll 8 on the rolling mill 7 to complete the installation of the new roll 8. Therefore, when using the rolling mill roll changing device provided by the present invention, there is no need to manually lift and adjust the roll 8 when changing the roll of the rolling mill, which reduces the labor intensity, reduces the safety hazards caused by the coordinated operation of multiple people, and improves the production efficiency.

[0026] As a possible implementation, Figure 3 and Figure 4 As shown, the support and limiting assembly 2 includes a first support component 210, which is horizontally movably arranged on the roll changing table 110 and connected to the driving end of the driving assembly 3. At least two relatively arranged limiting protrusions 211 are arranged on the first support component 210, and the at least two relatively arranged limiting protrusions 211 are used to accommodate the roller 8 and limit the roller 8 in a horizontal plane along a moving direction perpendicular to the support and limiting assembly 2.

[0027] In specific implementation, when the roll changing operation is performed, the roll changing device of the rolling mill is moved to the side of the rolling mill 7, and the driving assembly 3 is started. Since the first supporting member 210 is fixedly connected to the driving assembly 3, the power generated by the driving assembly 3 drives the first supporting member 210 to start horizontal movement on the roll changing platform 110. The first supporting member 210 moves toward the direction of the roll 8 until it moves to a position below the roll 8 in the rolling mill 7, at which time, the two limiting protrusions 211 are located at a suitable position below the roll 8. When the roll 8 is removed, the roll 8 will fall into the space between at least two relatively arranged limiting protrusions 211. The distance between the two limiting protrusions 211 is adapted to the diameter of the roll 8, so that the roll 8 can be accommodated therein, and due to the blocking effect of the limiting protrusions 211 located on both sides of the roll 8, the rolling of the roll 8 in the horizontal direction is limited, thereby realizing the horizontal limiting of the roll 8. During the entire roller changing process, the first support component 210 can be precisely adjusted in position as needed under the action of the driving assembly 3 to ensure that the roller 8 is disassembled or installed at a suitable position and always remains stable in the horizontal direction.

[0028] Furthermore, the first support member 210 is a planar T-shaped structure, which is horizontally slidably mounted on the roll-changing platform 110 and fixedly connected to the drive assembly 3, ensuring that the drive assembly 3 can drive it to move horizontally on the roll-changing platform 110. The tail end of the T-shaped first support member 210 faces the rolling mill 7, and at least two oppositely arranged limiting protrusions 211 are provided on its upper surface. This installation method allows the first support member 210 to move smoothly on the roll-changing platform 110, and to use its special shape to be inserted into the position directly below the roller 8 in the rolling mill 7, and to cooperate effectively with the rolling mill 7 and the roller 8.

[0029] It can be understood that the limiting protrusion 211 on the first support member 210 is set as at least two relatively arranged limiting protrusions 211. The limiting protrusion 211 includes at least two relatively arranged parts and is distributed in two rows. The number of limiting protrusions 211 in each row is not limited here, and can be one, two, three or four or more. When the number of limiting protrusions 211 in each row is two or more, the design method can be divided into two types: alignment type or staggered type. In the alignment type design, the limiting protrusions 211 in the two rows are in a one-to-one correspondence; while the staggered type is that the two rows of limiting protrusions 211 are staggered with each other. At the same time, the distance between the two rows of limiting protrusions 211 can be flexibly set to adapt to rollers 8 of different diameters.

[0030] As a possible implementation, Figure 4 As shown, the first support component 210 is provided with a receiving groove 212 on one side of a limiting protrusion 211, and the support limiting assembly 2 also includes a lifting component 220 and a second support component 230, wherein the lifting component 220 is fixedly arranged in the receiving groove 212; the second support component 230 is provided with at least two limiting through holes 231, and the limiting through holes 231 correspond one-to-one to the limiting protrusion 211, and the second support component 230 is vertically movably connected to the first support component 210 through the limiting through holes 231, and the bottom of the second support component 230 abuts against the lifting component 220.

[0031] In specific implementation, when the roller 8 is placed on the second support component 230, the lifting component 220 is adjusted to shrink, so that the second support component 230 slowly moves down and approaches the first support component 210. At this time, the limiting protrusions 211 on both sides will protrude along the limiting perforations 231 and be placed on both sides of the removed roller 8, thereby limiting the roller 8 from both sides to prevent the removed roller 8 from rolling off from both sides. When the roller 8 needs to be removed, the second support component 230 is first lifted up by the upward thrust of the lifting component 220. As the lifting component 220 gradually moves upward, the upward thrust continues to act on the second support component 230, pushing it to move upward stably in the vertical direction. In this process, the second support component 230 continues to rise until it reaches a certain height, at which time the upper surface of the second support component 230 is just parallel to the limiting protrusions 211 on the first support component 210. Under this height and parallel relationship, the roller 8 can smoothly roll down from the second support component 230 with a small external force, thereby completing the removal operation of the roller 8 from the support and limit assembly 2. Afterwards, the lifting component 220 continues to recover until it completely returns to the initial state, the second support component 230 also stops moving, and the entire support and limit assembly 2 returns to the initial state, ready for the next support operation.

[0032] With such a configuration, the design of using the lifting component 220 to lift the second support component 230 to a specific state and then removing the roller 8 makes the removal operation of the roller 8 more convenient and efficient. The operator does not need to use a complicated and laborious method to lift or move the roller 8, and can remove the roller 8 with the help of a small external force, which reduces the difficulty of operation and labor intensity and improves the overall efficiency of the roller replacement operation. In addition, the roller 8 only needs to be placed on the second support component 230 between the limiting protrusions 211, and the limiting protrusions 211 can move upward along the limiting perforations 231 to remove the second moving component, thereby conveniently performing the limiting operation on the roller 8.

[0033] In some embodiments, the lifting component 220 can be an electrically controlled hydraulic cylinder, or a pneumatic cylinder, a rubber airbag, or a combination of a mechanical spring and a lever mechanism, as long as it can play the same role in controlling lifting.

[0034] Furthermore, if Figure 4 As shown, the rolling mill roll changing device further includes an anti-skid pad 4, which is fixedly disposed on the top surface of the second supporting component 230 and is used for contacting with the rolling roller 8 to prevent slipping.

[0035] The anti-skid pad 4 can play an anti-skid role, and can reduce the problem of the roller 8 rolling left and right during the transportation process, and can also prevent the new roller 8 from being bumped and worn, thereby affecting the rolling effect of the rolling mill 7.

[0036] As a possible implementation, Figure 1 and Figure 2 As shown, the driving component 3 includes: two brackets 310, a first driving motor 320, a lead screw 330 and a slider 340, wherein the two brackets 310 are fixedly arranged on the roller changing platform 110; the first driving motor 320 is fixedly arranged on the roller changing platform 110, and is located at an end away from the bracket 310; the two ends of the lead screw 330 are respectively rotatably connected to the two brackets 310, and one end of the lead screw 330 passes through the bracket 310 and is fixedly connected to the output shaft of the first driving motor 320; the slider 340 is arranged on the roller changing platform 110, and is threadedly connected to the lead screw 330, and the support limit component 2 is fixedly connected to the slider 340.

[0037] In this arrangement, the two brackets 310 are fixed on the roller changing platform 110, providing a stable support point for the lead screw 330, ensuring that the lead screw 330 can rotate smoothly, and the installation position and angle are designed to ensure that the axis of the lead screw 330 is parallel to the moving direction of the support and limit assembly 2. The first drive motor 320 is fixed on the roller changing platform 110 and is located at the end away from the bracket 310. Its output shaft is aligned with and fixedly connected to one end of the lead screw 330 to transmit the rotational power to the lead screw 330. The slider 340 is installed on the roller changing platform 110 and forms a threaded connection with the lead screw 330. This connection method enables the slider 340 to move linearly along the axis direction of the lead screw 330 under the rotation of the lead screw 330. The support and limit assembly 2 is fixed to the slider 340 by welding or other suitable methods, so as to achieve the synchronous movement of the support and limit assembly 2 and the slider 340.

[0038] In specific implementation, when it is necessary to move the support and limit assembly 2, the first drive motor 320 is started, the first drive motor 320 starts to rotate, and its output shaft drives the lead screw 330 to rotate synchronously. Since the slider 340 is threadedly connected to the lead screw 330, according to the principle of threaded transmission, the rotation of the lead screw 330 will be converted into the linear motion of the slider 340. Since the support and limit assembly 2 is fixedly connected to the slider 340, by controlling the rotation direction and rotation speed of the first drive motor 320, the moving direction and moving speed of the support and limit assembly 2 can be accurately controlled, so that it can be accurately moved to the specified position below the roller 8, or moved to other suitable positions according to the needs of the roller changing operation. The design of this drive assembly 3 can realize the precise position control of the support and limit assembly 2. By accurately controlling the rotation angle and speed of the first drive motor 320, the support and limit assembly 2 can be accurately positioned at a high-precision position, thereby improving the accuracy and success rate of the roller changing operation.

[0039] It should be noted that the driving assembly 3 can be a gear rack transmission, specifically, the gear is installed on the output shaft of the driving motor, and the driving motor is fixed to the roller changing platform 110 by bolts. The rack is installed on the roller changing platform 110 along the moving direction of the support and limit assembly 2, and meshes with the gear. The support and limit assembly 2 is fixedly connected to the rack, so that when the rack moves, the support and limit assembly 2 can move synchronously therewith.

[0040] As a possible implementation, Figure 2 As shown, the rolling mill roll changing device also includes a guide assembly 5, which is fixedly arranged on the roll changing platform 110, and the guide assembly 5 is guided and matched with the support and limiting assembly 2.

[0041] In specific implementation, when the support and limit assembly 2 starts to move under the action of the driving assembly 3, the guide assembly 5 provides precise guidance for it and effectively prevents the occurrence of unstable conditions such as shaking and offset. It is ensured that the support and limit assembly 2 can accurately move to the predetermined position every time, such as accurately being located at the appropriate position below the roller 8, which improves the accuracy of the roller changing operation, reduces the risk of difficulty or failure in roller changing caused by inaccurate position of the support and limit assembly 2, and helps to improve the efficiency and quality of roller changing.

[0042] Furthermore, if Figure 2 As shown, the guide assembly 5 includes a directional guide rail 510 and a slide 520, wherein the directional guide rail 510 is fixedly arranged on the roller changing platform 110; the slide 520 is slidably connected to the directional guide rail 510, and the slide 520 is fixedly connected to the bottom of the support and limit assembly 2, and the slide 520 is used to cooperate with the directional guide rail 510 to guide the support and limit assembly 2.

[0043] Specifically, the directional guide rail 510 is firmly fixed on the roller changing platform 110 by welding or other means, and its installation position and direction are strictly designed according to the predetermined moving path of the support and limit assembly 2 to ensure that the guide rail and the roller changing platform 110 form a stable integral structure. The slide 520 is tightly fixed to the bottom of the support and limit assembly 2 by welding or other suitable connection methods, so that the slide 520 and the support and limit assembly 2 become a synchronously moving combination. The slide 520 is nested on the directional guide rail 510, and a clearance fit or an appropriate sliding fit is adopted to ensure that the slide 520 can slide smoothly on the directional guide rail 510, while not generating too large a gap to cause the support and limit assembly 2 to shake or deviate during movement.

[0044] In specific implementation, when the driving component 3 drives the support and limit component 2 to move, since the slide 520 is fixedly connected to the bottom of the support and limit component 2, the slide 520 will move with the support and limit component 2. The slide 520 slides on the directional guide rail 510, so that the slide 520 can only move linearly along the direction of the directional guide rail 510, thereby guiding the support and limit component 2 to move accurately in a predetermined direction. Whether the support and limit component 2 approaches the bottom of the rolling mill 7 roller 8 for support operation, or moves away from the rolling mill 7 after the roller change is completed, the cooperation of the slide 520 and the directional guide rail 510 always ensures that the movement trajectory of the support and limit component 2 is accurate. The combination of the directional guide rail 510 and the slide 520 can provide highly accurate guidance for the support and limit component 2. Through the precise design of the directional guide rail 510 and the precise matching between the slide 520 and the guide rail, the support limit assembly 2 can be accurately moved to the optimal position below the roller 8, ensuring the precise support and operation of the roller 8 during the roller changing process, improving the success rate and quality of roller changing, and reducing the risk of difficulty in roller changing or equipment damage due to inaccurate positioning.

[0045] In some embodiments, the guide assembly 5 can be a roller guide rail guide assembly 5. Specifically, a roller guide rail is installed on the roll changing platform 110 along the moving direction of the support and limit assembly 2, and the roller guide rail can be fixed on the roll changing platform 110 by welding or the like. Rollers matching the roller guide rails are installed on both sides or the bottom of the support and limit assembly 2. The rollers are connected to the support and limit assembly 2 through an axis, and the rollers can rotate freely. A certain contact pressure is maintained between the rollers and the roller guide rails to ensure a reliable guiding effect. The rolling friction between the rollers and the roller guide rails is greatly reduced compared to the sliding friction, so that the driving force required for the support and limit assembly 2 during the movement is smaller, the energy consumption of the drive assembly 3 is reduced, and the overall efficiency of the rolling mill roll changing device is improved. In addition, low friction can also reduce the wear of components and extend the service life of rollers and guide rails.

[0046] As a possible implementation, Figure 7 As shown, the lifting support frame 120 includes a bottom support tube 121, a support arm 122 and a transmission lifting mechanism 123, wherein a through hole is provided on one side of the bottom support tube 121; one end of the support arm 122 is movably arranged in the bottom support tube 121 along the axial direction of the bottom support tube 121, and a rack 1221 is provided on the side of the support arm 122 opposite to the through hole; the transmission lifting mechanism 123 is fixedly connected to the bottom support tube 121, and includes a second driving motor 1231, a worm 1232, a worm wheel 1233 and a gear 1234, the second driving motor 1231 drives the worm wheel 1233 through the worm 1232, the gear 1234 is coaxially fixed with the worm wheel 1233 and meshes with the rack 1221 through the through hole, so as to drive the support arm 122 to move along the axial direction of the bottom support tube 121.

[0047] In specific implementation, when the height of the lifting support frame 120 needs to be adjusted, the second drive motor 1231 is started. The second drive motor 1231 starts to rotate, and its output shaft drives the worm 1232 to rotate synchronously. The worm 1232 is meshed with the worm wheel 1233. According to the transmission characteristics of the worm 1232, the rotation of the worm 1232 will drive the worm wheel 1233 to rotate, and the gear 1234 coaxially rotating with the worm wheel 1233 rotates with the worm wheel 1233. The gear 1234 is meshed with the rack 1221 on the support arm 122 through the through hole, and the rotational motion of the gear 1234 is converted into the linear motion of the rack 1221, thereby driving the support arm 122 to move along the axial direction of the bottom support tube 121. If the second drive motor 1231 rotates in the forward direction, the support arm 122 moves upward to realize the lifting of the lifting support frame 120; on the contrary, if the second drive motor 1231 rotates in the reverse direction, the support arm 122 moves downward to realize the lowering of the lifting support frame 120. By precisely controlling the rotation direction and rotation angle of the second drive motor 1231, the height of the lifting support frame 120 can be precisely adjusted to meet different work requirements. Through the precise coordination of the second drive motor 1231, the worm 1232, the worm wheel 1233, the gear 1234 and the rack 1221, the height of the lifting support frame 120 can be precisely controlled. According to the specific height requirements of the rolling mill 7 and the rolling roller 8, the lifting support frame 120 can be adjusted to a high-precision position to ensure that the height matching between the support limit assembly 2 and the rolling roller 8 is accurate, which greatly improves the accuracy and success rate of the roll changing operation and reduces the difficulty of roll changing or the risk of equipment damage caused by height errors.

[0048] In some embodiments, the lifting support frame 120 may include a fixed rod, a movable rod and a locking pin, one end of the fixed rod is fixedly connected to the bottom plate 130, and the other end thereof forms a movable connection with the movable rod that can move up and down, and a locking pin is provided on the fixed rod, and the locking pin can fix the relative position of the movable rod and the fixed rod, and the upper end of the movable rod is fixedly connected to the roller changing platform 110. In specific implementation: the movable rod is connected to the fixed rod through the locking pin, and the locking pin can be manually loosened to control the movable rod to move along the axial direction of the fixed rod to adjust the height of the roller changing platform 110, and then the locking pin is locked so that the movable rod can be fixed on the fixed rod, thereby achieving the effect of adjusting the height of the roller changing platform 110.

[0049] In some embodiments, the transmission lifting mechanism 123 further includes a gear box, a through hole 1239 is provided on one side of the gear box 1237, and the through hole 1239 is arranged opposite to the through hole. The gear box 1237 is fixedly arranged on the bottom support tube 121, and contains the second drive motor 1231, the worm 1232, the worm wheel 1233 and the gear 1234. A support 1235 is fixedly installed on the inner side of the gear box 1237, and the middle part of the support 1235 is rotatably connected with a concentric shaft 1236, and the worm wheel 1233 and the gear 1234 are installed on the concentric shaft 1236. A gear box cover 1238 is hinged on the front of the gear box 1237. By providing the gear box 1237, a space for centralized installation and protection is provided for the transmission components such as the second drive motor 1231, the worm 1232, the worm wheel 1233 and the gear 1234. By integrating these components inside the gear box 1237, the transmission lifting mechanism 123 is made more compact, the risk of transmission component misalignment or failure due to external interference is reduced, and the stability and reliability of the entire transmission lifting mechanism 123 are improved. A gear box cover 1238 is provided on the gear box 1237, and the gear box cover 1238 is hingedly mounted on the gear box 1237, so that when the transmission components need to be maintained and repaired, the gear box 1237 can be easily opened, which is convenient for replacement and repair of the transmission components, thereby improving the maintainability of the equipment.

[0050] It should be noted that one end of the bottom support tube 121 is fixedly connected to the bottom plate 130 by welding or other means to form an integral structure to ensure that there is no relative displacement between the two. At the same time, one end of the support arm 122 is fixed to the roller changing platform 110 in the same fixed connection manner to provide stable support for the roller changing platform 110. The pulley 150 at the bottom of the bottom plate 130 is installed on the bottom plate 130 through an axle. The pulley 150 can rotate smoothly, and the layout of the pulley 150 is reasonably distributed according to the bottom plate 130, and is often found at the four corners or key support points of the bottom plate 130 to ensure the balance of the entire device when moving.

[0051] In specific implementation, before the roll changing operation, if it is necessary to adjust the height of the rolling mill roll changing device to adapt to the height requirements of different rolling mills 7 or rolls 8, the lifting support frame 120 begins to play a role to achieve height adjustment. When the height is adjusted to a suitable position, that is, when the support limit assembly 2 is attached to the bottom of the roll 8 to be disassembled, the lifting support frame 120 is locked in this position to maintain stability, providing precise height support for subsequent roll changing operations. When it is necessary to move the rolling mill roll changing device, the operator applies a small external force to push or pull the device, and at this time, the pulley 150 at the bottom of the bottom plate 130 rolls on the ground or track. During the movement, the pulley 150 automatically adjusts the rotation direction according to the moving direction of the device, and after reaching the specified position, the pulley 150 can be fixed by a brake device or a locking mechanism to prevent the device from accidentally moving during operation. With such an arrangement, the height of the rolling mill roll changing device can be accurately adjusted through the cooperation of the lifting support frame 120 and the pulley 150 structure, ensuring that the support limit assembly 2 and the roll 8 are perfectly matched in height. The precise height adaptation can enable the roll 8 to be stably placed on the support limit assembly 2, effectively avoiding safety hazards such as the roll 8 slipping and colliding due to height difference, thereby improving the success rate and operating efficiency of roll changing. The design of the pulley 150 at the bottom of the bottom plate 130 gives the rolling mill roll changing device good mobility, which is convenient for rapid movement to different working positions in the rolling mill workshop 7.

[0052] As a possible implementation, Figure 8 As shown, the lifting support frame 120 includes a base, a hydraulic cylinder 9 and a lifting bracket 10, wherein one end of the hydraulic cylinder 9 is fixedly arranged on the base, and the other end is fixedly connected to the roller changing platform 110, and the hydraulic cylinder 9 is used to provide a force for lifting and lowering the roller changing platform 110; the lifting bracket 10 includes a fixed part and a movable part, one end of the fixed part is fixedly arranged on the base, one end of the movable part is vertically movably connected to the other end of the fixed part, and the other end of the movable part is fixedly connected to the roller changing platform 110.

[0053] In the specific implementation, first, the entire rolling mill roll changing device is in the initial position, at which time the roll changing platform 110 is in a lower position relative to the rolling mill 7, ready for the roll changing operation; next, when adjusting the height of the roll changing platform 110, the hydraulic cylinder 9 starts to move up and down, and the lifting action of the hydraulic cylinder 9 directly drives the lifting bracket 10 to move. Since the lifting bracket 10 is connected to the roll changing platform 110, the rise of the lifting bracket 10 drives the rise of the roll changing platform 110; when the roll changing platform 110 reaches a suitable height, the support limit assembly 2 moves to the bottom of the roll 8 under the action of the drive assembly 3, and then the roll 8 can be disassembled and installed; after the roll changing operation is completed, the hydraulic cylinder 9 works again to adjust the roll changing platform 110 to the initial position, and the roll changing process ends. This embodiment realizes the flexible adjustment of the height of the roll changing platform 110 by providing a matching structure of a hydraulic cylinder 9 and a lifting bracket 10, thereby facilitating the replacement operation of the roll 8, reducing the labor intensity during roll changing, and improving production efficiency.

[0054] As a possible implementation method, the rolling mill roll changing device also includes a switch assembly and a power supply assembly 6, wherein the switch assembly is electrically connected to the lifting component 220, the lifting support frame 120 and the drive assembly 3, and is used to control the start, stop and switching of the movement state of the lifting component 220, the lifting support frame 120 and the drive assembly 3; the power supply assembly 6 is electrically connected to the switch assembly, and is used to power the switch assembly.

[0055] Specifically, the switch assembly includes sub-switches with different functions. A lifting control switch is provided for the lifting component 220. By manually operating the switch, the lifting component 220 can be extended or retracted as required, thereby adjusting the relative distance between the second support component 230 and the first support component 210 to adapt to the structural requirements of the support limit component 2 at different stages (when the roller 8 is installed and when the roller 8 is disassembled); for the lifting support frame 120, the corresponding sub-switch can control the second drive motor 1231 to work, drive the support arm 122 to move along the axial direction of the bottom support cylinder 121, and then adjust the height of the roll changing table 110 to meet the height matching requirements of the rolling mill 7 and the rolling mill 8; for the drive component 3, the corresponding sub-switch can control the first drive motor 320 to work, drive the screw 330 to rotate, and move the slider 340 along the screw 330, thereby driving the support limit component 2 connected thereto to move toward the direction of the rolling mill 7. When it is necessary to move the support limit component 2 in the reverse direction, the reverse switch can be operated to achieve it. At the same time, the switch assembly has the function of switching different motion states. For the lifting component 220, the switch assembly can switch its rising state and falling state. The lifting component 220 can be driven by hydraulic, electric or other mechanical means. When it is driven by hydraulic, the switch controls the hydraulic pump to allow the hydraulic oil to enter the specific chamber of the hydraulic cylinder, pushing the piston up, thereby driving the second support component to rise; when the second support component 230 needs to be lowered, the switch controls the change of the flow direction of the hydraulic oil to make the piston fall, thereby realizing the switching between the rising and falling states. At the same time, for the lifting support frame 120 and the second drive motor 1231 and the first drive motor 320 of the drive assembly 3, the switch realizes the switching of the lifting support frame 120 rising and falling states by adjusting the forward and reverse rotation of the motor, and realizes the switching of the support limit assembly 2 to the motion state close to the rolling mill 7 and the motion state away from the rolling mill 7.

[0056] In this way, the switch assembly is electrically connected to the lifting component 220, the lifting support frame 120 and the drive assembly 3, and can realize coordinated control of these components. The switch assembly is provided with a switch panel 630 that integrates a lifting switch, a moving switch and a roller changing switch. During the roller changing process, whether it is the lifting support frame 120 adjusting the height of the roller changing platform 110, or the drive assembly 3 driving the horizontal movement of the support limit assembly 2, and the operation of the lifting component 220, they can all be precisely coordinated according to the instructions of the switch assembly. And a power supply assembly 6 electrically connected to the control assembly is provided, such as Figure 5As shown, the power supply assembly 6 includes a power supply box 610 and a battery 620. The power supply box 610 serves as the outer shell of the power supply assembly 6 and provides protection and fixing space for the internal battery 620. The battery 620 inside the power supply box 610 can provide an independent power supply for the rolling mill roll changing device. The battery 620 can ensure the key functions of the rolling mill roll changing device and ensure that the device can operate normally without being affected by the external power supply conditions, thereby improving the use flexibility and emergency response capability of the rolling mill roll changing device, ensuring the continuity of the roll changing work, and reducing production delays caused by external factors such as power outages.

[0057] In some embodiments, Figure 2 As shown, the roller changing platform 110 includes at least two lifting support frames 120 , a reinforcement rod 140 is fixedly arranged between two adjacent lifting support frames 120 , and a plurality of load-bearing beams are arranged at the bottom of the roller changing platform 110 .

[0058] During the use of the rolling mill roll changing device, when the support limit assembly 2 carries the roll 8 or is subjected to various external forces during movement, the lifting support frame 120 serves as the main supporting structure to evenly transfer these forces to the ground or other basic support surfaces. Optionally, the number of lifting support frames 120 can be two or four, and the reinforcement rod 140 between two adjacent lifting support frames 120 serves to enhance the overall rigidity of the support frame and prevent the lifting support frame 120 from deforming or twisting when subjected to force. The load-bearing beam at the bottom of the roll changing platform 110 mainly bears the weight of the roll 8 and other components, dispersing the weight over a larger area, reducing the local stress concentration of the roll changing platform 110, and improving the load-bearing capacity and durability of the roll changing platform 110.

[0059] As a possible implementation, Fig. 9 As shown, the rolling mill roll changing device also includes: a control module, which is in communication connection with the lifting component 220, the lifting support frame 120 and the driving component 3, and is used to control the operation of the lifting component 220, the lifting support frame 120 and the driving component 3.

[0060] The working process of the control module is as follows: the rolling mill roll changing device is started, and the old rolls are first disassembled. The rolling mill roll changing device first enters the self-test operation stage to check the power supply, including the stability check of voltage and current. If the power supply is abnormal, it is necessary to stop the machine for inspection to eliminate the fault; if the power supply is normal, the height that the roll changing platform 110 should reach is calculated according to the size of the roll 8 and the rolling mill 7, and then the control module controls the roll changing platform 110 to adjust to the calculated height. Next, the control module controls the first drive motor 320 to drive the lead screw 330 to rotate according to the calculated parameters, thereby driving the slider 340 to move, so that the support limit assembly 2 moves toward the rolling mill 7. Afterwards, under the control of the control module, the second drive motor 1231 starts to work, driving the worm 1232 to rotate, the worm 1232 drives the worm wheel 1233 to rotate, and then drives the lifting gear 1234 to move, the gear 1234 is engaged with the rack 1221, and the support arm 122 slowly slides up until the support limit assembly 2 contacts the roll; or, in Figure 8 In the provided embodiment, the control module controls the hydraulic cylinder 9 under the roll changing platform 110 to work, so that the support and limit assembly 2 is in contact with the roll 8. After the above steps are completed, the control module controls the lifting component 220 to work, so that the second support component 230 moves down until it is close to the first support component 210, until the limit protrusion 211 protrudes. Then, the control module controls the roll changing platform 110 to be lowered until the old roll can be moved out of the rolling mill 7. After that, the control module controls the driving component 3 to make the support and limit assembly 2 detach from the rolling mill 7. After completely detaching, the control module controls the lifting component 220 to extend and lift the roll 8 at the same time, so that the second support component 230 is flush with the limit protrusion 211, and the roll 8 is rolled off the second support component 230, and the disassembly of the old roll is completed. After that, the new roller is installed. First, the control module adjusts the height of the support and limit assembly 2 to keep it consistent with the height of the roller frame, and rolls the new roller on the roller frame onto the second support component 230. Then, the control module controls the lifting component 220 to retract. During this process, the second support component 230 moves downward until it is close to the first support component 210, and the limit protrusion 211 protrudes to limit the new roller horizontally. Subsequently, the control module controls the drive component 3 to move the support and limit assembly 2 toward the rolling mill 7, thereby moving the support and limit assembly 2 to a suitable position. Afterwards, under the control of the control module, the second drive motor 1231 starts to work, driving the worm 1232 to rotate, and the worm 1232 drives the worm wheel 1233 to rotate, thereby driving the lifting gear 1234 to move, and the gear 1234 meshes with the rack 1221, and the support arm 122 slowly slides up until the support and limit assembly 2 contacts the roller 8; or, in Figure 8In the provided embodiment, the control module controls the hydraulic cylinder 9 under the roll changing platform 110 to work, so that the support limit assembly 2 drives the new roll to be flush with the installation position of the rolling mill 7 frame, and then the control module adopts the normal locking process to lock and fix the roll 8 on the rolling mill 7 to complete the installation of the new roll. By setting the control module, the entire roll changing process can be automated through the control module, reducing the time of manual intervention and improving the working efficiency of the rolling mill roll changing device. At the same time, the control module can record the operating data during the roll changing process. When a fault occurs, the fault can be accurately determined based on these data. And because the control module can accurately control the movement process of each component, it avoids the wear of the equipment caused by improper operation and extends the service life of the rolling mill roll changing device.

[0061] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rolling mill roll changing device, characterized in that: include: Roller changing station; A lifting support frame, the lifting support frame is fixedly connected to the bottom of the roller changing platform, and is used to adjust the height of the roller changing platform and support the roller changing platform; A support and limit assembly, the support and limit assembly is horizontally movably arranged on the roll changing platform, and the support and limit assembly is used to move below the roll to support and limit the roll; A driving assembly is arranged on the roller changing platform, and a driving end of the driving assembly is connected to the supporting and limiting assembly, so as to drive the supporting and limiting assembly to move on the roller changing platform.

2. The rolling mill roll changing device according to claim 1, characterized in that: The support and limiting assembly comprises: The first supporting component is horizontally movably arranged on the roll changing table and connected to the driving end of the driving component. The first supporting component is provided with at least two relatively arranged limiting protrusions, and the two limiting protrusions are used to accommodate the rolling roller and limit the rolling roller in a horizontal plane along a moving direction perpendicular to the support limiting component.

3. The rolling mill roll changing device according to claim 2, characterized in that: The first support component is provided with a side on which the limiting protrusion is provided with a receiving groove, and the support limiting assembly further includes: A lifting component, wherein the lifting component is fixedly disposed in the accommodating groove; The second supporting component is provided with at least two limiting through holes, the limiting through holes correspond to the limiting protrusions one by one, the second supporting component is vertically movably connected to the top of the first supporting component through the cooperation of the limiting through holes and the limiting protrusions, and the bottom of the second supporting component abuts against the lifting component.

4. The rolling mill roll changing device according to claim 1, characterized in that: The drive assembly comprises: Two brackets, the brackets are fixedly arranged on the roller changing platform; A first driving motor, wherein the first driving motor is fixedly arranged on the roller changing platform; A lead screw, wherein both ends of the lead screw are rotatably connected to the two brackets respectively, and one end of the lead screw passes through the bracket and is fixedly connected to the output shaft of the first drive motor; A slider is arranged on the roller changing platform and is threadedly connected to the lead screw. The support and limiting assembly is fixedly connected to the slider.

5. The rolling mill roll changing device according to claim 1, characterized in that: The rolling mill roll changing device also includes: A guide assembly is fixedly arranged on the roller changing platform, and the guide assembly is guided and matched with the support and limiting assembly.

6. The rolling mill roll changing device according to claim 5, characterized in that: The guide assembly comprises: A directional guide rail, wherein the directional guide rail is fixedly arranged on the roller changing platform; A slide, the slide is slidably connected to the directional guide rail, the slide is fixedly connected to the bottom of the support and limit assembly, and the slide is used to cooperate with the directional guide rail to guide the support and limit assembly.

7. The rolling mill roll changing device according to claim 1, characterized in that: The lifting support frame comprises: A bottom support tube, wherein a through hole is provided on one side of the bottom support tube; A support arm, one end of which is movably disposed in the bottom support tube along the axial direction of the bottom support tube, and a rack is disposed on a side of the support arm opposite to the through hole; A transmission lifting mechanism is fixedly connected to the bottom support tube, and comprises a second drive motor, a worm, a worm wheel and a gear. The second drive motor drives the worm wheel through the worm. The gear is coaxially fixed with the worm wheel and passes through the through hole to engage with the rack, so as to drive the support arm to move axially along the bottom support tube.

8. The rolling mill roll changing device according to claim 1, characterized in that: The lifting support frame comprises: Base; A hydraulic cylinder, one end of which is fixedly arranged on the base, and the other end of which is fixedly connected to the roller changing platform, and the hydraulic cylinder is used to provide a force for lifting and lowering the roller changing platform; The lifting bracket comprises a fixed part and a movable part, one end of the fixed part is fixedly arranged on the base, one end of the movable part is vertically movably connected to the other end of the fixed part, and the other end of the movable part is fixedly connected to the roller changing platform.

9. The rolling mill roll changing device according to claim 3, characterized in that: The rolling mill roll changing device also includes: A switch assembly, the switch assembly being electrically connected to the lifting component, the lifting support frame and the driving component, and being used to control the start, stop and switching of the motion state of the lifting component, the lifting support frame and the driving component; A power supply component is electrically connected to the switch component and is used to supply power to the switch component.

10. The rolling mill roll changing device according to claim 3, characterized in that: The rolling mill roll changing device also includes: A control module is communicatively connected with the lifting component, the lifting support frame and the driving assembly, and is used to control the operation of the lifting component, the lifting support frame and the driving assembly.

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