Straightener structure allowing for quick straightening roll replacement, and roll replacement method

Abstract

A straightener structure allowing for quick straightening roll replacement, and a roll replacement method. The straightener structure comprises a fixed-side rack (1), roll collar assemblies (2), a roll frame (3), a roll frame sliding seat (4), a roll frame lifting / lowering mechanism (5), a slideway (6), a moving-side rack (7), a transverse moving device (9), a connecting device (10), and a hoisting mechanism. During roll replacement, the roll frame (3) is lifted to be in contact with a roll collar assembly (2) by means of a synchronous hydraulic jack; under the action of the transverse moving device (9), the moving-side frame (7) drives the roll frame sliding seat (4) to move transversely; after the roll frame sliding seat (4) is in place, the roll frame (3) is lifted to a roll collar hoisting position by means of the synchronous hydraulic jack; a space is reserved for a roll collar hoisting hook (11) to avoid a pull rod; positioning between the roll collar hoisting hook (11) and the roll collar assembly (2) is implemented by means of a collar recess; the roll collar assembly (2) is hooked by the roll collar hoisting hook (11); and the entire roll collar assembly (2) is efficiently and automatically replaced under the action of the lifting mechanism. Safe, reliable, and convenient replacement of new and old straightening roll collar assemblies (2) is implemented. A roll replacement hoisting device has a simple structure, achieves safe and reliable operation, and can satisfy the roll replacement requirement for unequal roll distances.

Description

A straightening machine structure and roller changing method for quickly replacing straightening rollers Technical Field

[0001] The invention belongs to the field of metal rolling equipment and relates to a straightening machine structure for quickly replacing straightening rollers and a roller changing method. Background Art

[0002] Straightening is a crucial metalworking process that determines product quality. During production, changes in product specifications and wear of the straightening rolls necessitate frequent roll replacement. To ensure rapid roll replacement, a centralized, integrated roll replacement system is required. To reduce roll replacement complexity and accommodate the need for roll replacement at varying roll pitches, a hook-type hoisting system is employed, achieving efficient roll replacement.

[0003] At present, there are two traditional ways to change the rollers of this type of straightening machine, namely, grabbing with a special sling and lifting with a workshop crane. The former has high requirements for the control of the sling, resulting in a large investment. The latter requires manual hanging of the wire rope, which is labor-intensive and poses safety risks. At the same time, it is not suitable for changing rollers with unequal roller spacing and cannot meet the needs of roller changing well.

[0004] Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a straightening machine structure and roller changing method for quickly replacing straightening rollers, so as to overcome the above problems and ensure that the straightening machine meets the requirements of production and quick replacement of straightening rollers.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a straightening machine structure for quickly replacing straightening rollers, comprising a fixed side frame, a roller ring assembly, a roller frame, a roller frame slide, a roller frame lifting mechanism, a slide, a mobile side frame, a connecting device, a roller frame slide and a lifting mechanism, the roller frame slide is arranged on the slide and is connected to the mobile side frame through a connecting device, the mobile side frame is also connected to a transverse movement device on the side away from the roller frame slide, the transverse movement device enables the mobile side frame to drive the roller frame slide to move transversely, the roller frame slide is connected to the roller frame through the roller frame lifting mechanism, so as to realize synchronous lifting and lowering of the roller frame, and the roller ring assembly is arranged on the top of the roller frame; the lifting mechanism comprises a traveling frame, a lifting drive mechanism, a traveling drive mechanism, a roller ring sling and a track, so as to realize the overall lifting and lowering and transverse movement of the roller ring sling, thereby completing the rapid replacement of the new and old straightening roller rings.

[0007] Optionally, the roller frame lifting mechanism is a synchronous hydraulic jack fixed on the roller frame slide, and is equipped with a PLC synchronous jacking hydraulic system to achieve quantitative synchronous lifting of the roller frame.

[0008] Optionally, the connecting device is fixed on the inner side of the mobile side frame and consists of a T-shaped rod head, a pad and an adjustment gasket. The end of the T-shaped rod head away from the pad is set to pass through the waist-shaped hole of the roller frame slide and hook the T-shaped structure of the slide. The pad is fixed on the other end face of the T-shaped rod head, and the distance from the roller frame slide is adjusted by the adjustment gasket, so that the mobile side frame can be pulled out / pushed in a fixed distance and then move synchronously with the roller frame slide.

[0009] Optionally, the transverse movement device is a horizontally arranged hydraulic cylinder, and the piston rod of the hydraulic cylinder is hinged to the movable side frame.

[0010] Optionally, a straightening roller system is also included, which consists of a fixed side conical shaft, a pull rod, a roller ring assembly and a movable side conical shaft; the fixed side conical shaft is arranged on the fixed side frame, and the pull rod is fixed on the fixed side conical shaft and is coaxially arranged therewith; the movable side conical shaft is arranged on the movable side frame and is coaxial with the fixed side conical shaft; the roller ring assembly and the movable side conical shaft are both provided with pull rod through holes that cooperate with the pull rod, and both ends of the roller ring assembly are also provided with conical holes that cooperate with the fixed side conical shaft and the movable side conical shaft respectively.

[0011] Optionally, the straightening roller system is further provided with a locking device for locking the fixed side tapered shaft, the pull rod, the roller ring assembly and the movable side tapered shaft, and an axial adjustment device for adjusting the axial position of the roller ring assembly.

[0012] Optionally, it also includes bearing seats respectively arranged on the fixed side frame and the movable side frame, and slidingly matched with them in a single degree of freedom in the vertical direction. The fixed side tapered shaft and the movable side tapered shaft are respectively arranged in the corresponding bearing seats. The fixed side frame and the movable side frame are also provided with vertical adjustment devices for adjusting the vertical position of the bearings.

[0013] Optionally, the roller ring hoist includes a lifting hook balance beam connected to the lifting drive mechanism, and roller ring lifting hooks arranged on the lifting hook balance beam and matching the number of roller ring assemblies. The trapezoidal boss on the hook surface of the roller ring lifting hook cooperates with the trapezoidal groove in the inner hole of the roller ring assembly to hook the roller ring assembly while achieving axial positioning to prevent slipping.

[0014] A roller changing method for quickly replacing straightening rollers uses a straightening machine structure for quickly replacing straightening rollers as described above, including the following steps: hooking all roller ring assemblies with roller ring hoists, replacing the roller rings as a whole at the roller changing position under the action of a lifting mechanism, replacing the roller ring working position by relying on the straightening machine structure for quickly replacing straightening rollers, and finally realizing rapid and centralized roller replacement.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a straightening machine structure and a roller changing method for quickly replacing straightening rollers. When changing rollers, the roller frame is raised to contact with the roller ring assembly by a synchronous hydraulic jack, and the roller frame slide is driven to move horizontally by the movable side frame under the action of the transverse movement device. After it is in place, the roller frame is raised to the roller ring lifting station by a synchronous hydraulic jack, and space is reserved for the lifting hook to avoid the pull rod. The lifting hook with the posture positioning device and the roller ring assembly are reliably and conveniently positioned through the annular concave groove. The entire roller ring assembly is hooked by the roller ring sling, and the roller ring is efficiently and automatically replaced as a whole under the action of the lifting mechanism. The present invention can realize safe, reliable and convenient replacement of old and new straightening roller rings. At the same time, the required roller changing sling has a simple structure, is safe and reliable to operate, and can meet the requirements of roller changing with unequal roller spacing.

[0016] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0018] Figure 1 is a schematic diagram of the working position of the straightening machine of the present invention;

[0019] FIG2 is a schematic diagram of the roller position change of the straightening machine of the present invention;

[0020] FIG3 is a schematic diagram of the roller ring replacement of the straightening machine of the present invention;

[0021] FIG4 is a schematic diagram of the connection of the T-shaped rod head of the straightening machine of the present invention through the waist-shaped hole of the roller frame slide;

[0022] FIG5 is a schematic diagram of the overall hoisting structure of the roller ring of the straightening machine of the present invention.

[0023] Figure markings: 1—fixed side frame; 2—roller ring assembly; 3—roller frame; 4—roller frame slide; 5—roller frame lifting mechanism; 6—slide; 7—movable side frame; 8—pull rod; 9—transverse movement device; 10—connecting device; 11—roller ring lifting hook; 12—lifting hook balance beam; 13—traveling frame; 14—lifting drive mechanism; 15—traveling drive mechanism; 16—track; 1001—T-shaped rod head; 1002—pad. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0025] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 5, which show a straightening machine structure for quickly replacing straightening rollers, including a fixed side frame 1, a roller ring assembly 2, a roller frame 3, a roller frame slide 4, a roller frame lifting mechanism 5, a slide 6, a mobile side frame 7, a connecting device 10, a roller frame slide 4 and a lifting mechanism. The roller frame slide 4 is set on the slide 6 and connected to the mobile side frame 7 through the connecting device 10. The mobile side frame 7 is further connected to a transverse device 9 on the side away from the roller frame slide 4. The transverse device 9 realizes that the mobile side frame 7 drives the roller frame slide 4 to move horizontally. The roller frame slide 4 is lifted by the roller frame lifting mechanism 5. It is connected to the roller frame 3 to achieve synchronous lifting of the roller frame 3, and the roller ring assembly 2 is set on the top of the roller frame 3; the lifting mechanism includes a traveling frame 13, a lifting drive mechanism 14, a traveling drive mechanism 15, a roller ring sling and a track 16, which can realize the overall lifting and lateral movement of the roller ring sling, thereby completing the rapid replacement of the new and old straightening roller rings. The lateral movement device 9 is a horizontally arranged hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the mobile side frame 7, and also includes a straightening roller system. The straightening roller system consists of a fixed side tapered shaft, a pull rod 8, a roller ring assembly 2 and a mobile side tapered shaft; the fixed side tapered shaft is set on the fixed side frame 1, and the pull rod 8 Rod 8 is fixed on the fixed side tapered shaft and is arranged coaxially therewith; the movable side tapered shaft is arranged on the movable side frame 7 and is coaxial with the fixed side tapered shaft; both the roller ring assembly 2 and the movable side tapered shaft are provided with a pull rod 8 through hole that cooperates with the pull rod 8, and both ends of the roller ring assembly 2 are also provided with tapered holes that cooperate with the fixed side tapered shaft and the movable side tapered shaft respectively. The straightening roller system is also provided with a locking device for locking the fixed side tapered shaft, the pull rod 8, the roller ring assembly 2 and the movable side tapered shaft, and an axial adjustment device for adjusting the axial position of the roller ring assembly 2, and also includes a plurality of rollers arranged on the fixed side frame 1 and the movable side frame 7 respectively. , and a bearing seat that slides with it in a single degree of freedom in the vertical direction. The fixed side tapered shaft and the movable side tapered shaft are respectively arranged in the corresponding bearing seats. The fixed side frame 1 and the movable side frame 7 are also provided with vertical adjustment devices for adjusting the vertical position of the bearing. The roller ring sling includes a lifting hook balance beam 12 connected to the lifting drive mechanism 14, and roller ring lifting hooks 11 arranged on the lifting hook balance beam 12 and matching the number of roller ring assemblies 2. The trapezoidal boss on the hook surface of the roller ring lifting hook 11 cooperates with the trapezoidal groove in the inner hole of the roller ring assembly 2 to hook the roller ring assembly 2 while achieving axial positioning to prevent slipping.

[0028] In this embodiment, the roller frame lifting mechanism 5 is a synchronous hydraulic jack fixed on the roller frame slide 4 and is equipped with a PLC synchronous lifting hydraulic system to achieve quantitative synchronous lifting of the roller frame 3.

[0029] In this embodiment, the connecting device 10 is fixed on the inner side of the movable side frame 7, and is composed of a T-shaped rod head 1001, a pad 1002 and an adjusting gasket. The end of the T-shaped rod head 1001 away from the pad 1002 is set to a T-shaped structure that passes through the waist-shaped hole of the roller frame slide 4 and hooks the slide. The pad 1002 is fixed on the other end face of the T-shaped rod head 1001, and the distance from the roller frame slide 4 is adjusted by adjusting the gasket, so that the movable side frame 7 can be pulled out / pushed in a fixed distance and then move synchronously with the roller frame slide 4.

[0030] A roller changing method for quickly replacing straightening rollers uses a straightening machine structure for quickly replacing straightening rollers as described above, including the following steps: hooking all roller ring assemblies 2 through roller ring hoists, replacing the roller rings as a whole at the roller changing position under the action of a lifting mechanism, relying on the straightening machine structure for quickly replacing straightening rollers to realize the replacement of roller ring working positions, and finally realizing rapid and centralized roller replacement.

[0031] The specific steps for changing the roller are as follows:

[0032] The steps for moving the roller ring assembly 2 from the working position to the roller changing position are as follows: under the action of the roller frame lifting mechanism 5, the roller frame slide 4 is lifted to the roller connecting position, the frame and roller ring are locked and opened, and the movable side frame 7 is pulled to slide along the slide 6 under the action of the transverse device 9. When the T-shaped rod head 1001 of the connecting device 10 hooks the roller frame slide 4, it drives the roller frame slide 4 and the roller frame 3 and roller ring assembly 2 supported by it to move synchronously to the roller changing position. At this time, the end face of the roller ring assembly 2 has been disengaged from the head of the pull rod 8, and is ready for the roller ring assembly 2 to be lifted to the hoisting position.

[0033] The steps for lifting the roller ring assembly 2 from the roller changing position to the hoisting position are as follows: under the action of the roller frame lifting mechanism 5, the roller frame slide 4 is lifted again to the hoisting position, so that the roller ring lifting hook 11 can avoid the pull rod 8 and hook the roller ring assembly 2. The supporting components and control principles used in the roller frame lifting mechanism are all existing mature technologies. They are not the core innovation of this application and are therefore not described in detail here.

[0034] The steps for removing the roller ring assembly 2 as a whole are as follows: the integrally hoisted traveling frame 13 moves to the roller changing position, and the roller ring lifting hook 11 is realized by the lifting drive mechanism 14 and the traveling drive mechanism 15 to hook the roller ring assembly 2 at the same time. The trapezoidal boss on the hook surface of the roller ring lifting hook 11 just matches the trapezoidal groove in the inner hole of the roller ring assembly 2, and the roller ring assembly 2 is hooked while being axially positioned to prevent it from slipping. The roller ring lifting hook 11 is fixed in its relative position and posture positioning by the lifting hook balance beam 12 and balances the overload. The lifting drive mechanism 14 lifts the roller ring assembly 2 as a whole, detaches the roller frame 3 to a safe operating height, and then moves to the vertical position in the center of the roller ring storage rack through the traveling drive mechanism 15, and the roller ring assembly 2 is placed as a whole on the ring storage rack by the lifting drive mechanism 14.

[0035] The steps for installing the roller ring assembly 2 as a whole are as follows: the integrally hoisted traveling frame 13 moves to the vertical position in the center of the storage rack where the new roller ring is placed, and the roller ring lifting hook 11 is hooked on the roller ring assembly 2 at the same time through the lifting drive mechanism 14 and the traveling drive mechanism 15. The lifting drive mechanism 14 lifts the roller ring assembly 2 as a whole, detaches it from the roller ring storage rack to a safe operating height, and then moves to the roller changing position through the traveling drive mechanism 15. The lifting drive mechanism 14 places the roller ring assembly 2 as a whole on the roller frame 3, and the roller ring lifting hook 11 moves to the waiting position after being unhooked.

[0036] The steps of lowering the roller ring assembly 2 from the hoisting position to the roller changing position are as follows: under the action of the roller frame lifting mechanism 5, the roller frame slide 4 is lowered to the roller changing position, so that the roller ring assembly 2 is pushed into the working position as a whole.

[0037] The steps for moving the roller ring assembly 2 from the roller changing position to the working position are as follows: under the action of the transverse movement device 9, the movable side frame 7 is pushed to slide along the slide 6; when the pad 1002 of the connecting device 10 contacts the roller frame slide 4, the roller frame slide 4 and the roller frame 3 and the roller ring assembly 2 supported by it are pushed to the working position synchronously; the frame and the roller ring are locked; under the action of the roller frame lifting mechanism 5, the roller frame slide 4 is lowered to the waiting position to complete the overall roller changing process.

[0038] Another object of the present invention is to realize centralized roller changing for straightening machines with unequal roller spacing to ensure safe and reliable lifting operations. Therefore, a lifting hook balance beam 12 is provided to change rollers under eccentric load conditions.

[0039] The present invention can realize centralized roller replacement for straightening machines with unequal roller spacing through the above-mentioned structural arrangement method, thereby ensuring safe and reliable lifting operations.

[0040] In this embodiment, the roller ring hoist realizes efficient automatic hooking according to the instructions of the control system. At the same time, the roller frame automatically rises quantitatively to reserve space for the lifting hook to avoid the pull rod. The lifting hook with the posture positioning device and the roller ring assembly are reliably and conveniently positioned through the annular groove, thereby ensuring the consistency of the lifting position of the roller ring assembly and realizing safe, reliable and convenient automatic centralized roller replacement.

[0041] In this embodiment, the method can also be applied to other places with similar requirements, that is, it can be applied to one or more of the following scenarios: (1) overall lifting and stacking of steel coils; (2) overall disassembly and assembly of hollow roller structures; (3) concentration of straightening rollers.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A straightening machine structure for quickly replacing straightening rollers, characterized in that: It includes a fixed side frame, a roller ring assembly, a roller frame, a roller frame slide, a roller frame lifting mechanism, a slideway, a mobile side frame, a connecting device, a roller frame slide and a lifting mechanism. The roller frame slide is arranged on the slideway and connected to the mobile side frame through a connecting device. The mobile side frame is also connected to a transverse movement device on a side away from the roller frame slide. The mobile side frame drives the roller frame slide to move transversely through the transverse movement device. The roller frame slide is connected to the roller frame through the roller frame lifting mechanism to realize synchronous lifting of the roller frame. The roller ring assembly is arranged on the top of the roller frame. The hoisting mechanism comprises a traveling frame, a lifting drive mechanism, a traveling drive mechanism, a roller ring hoist and a track, so as to realize the overall lifting and lateral movement of the roller ring hoist, thereby completing the rapid replacement of the new and old straightening roller rings.

2. A straightening machine structure for quickly replacing straightening rollers according to claim 1, characterized in that: The roller frame lifting mechanism is a synchronous hydraulic jack fixed on the roller frame slide, equipped with a PLC synchronous lifting hydraulic system to achieve quantitative synchronous lifting of the roller frame.

3. A straightening machine structure for quickly replacing straightening rollers according to claim 1, characterized in that: The connecting device is fixed on the inner side of the mobile side frame, and is composed of a T-shaped rod head, a pad and an adjusting gasket. The end of the T-shaped rod head away from the pad is arranged to pass through the waist-shaped hole of the roller frame slide and hook the T-shaped structure of the slide. The pad is fixed on the other end face of the T-shaped rod head, and the distance with the roller frame slide is adjusted by the adjusting gasket, so that the mobile side frame can be pulled out / pushed in a fixed distance and then move synchronously with the roller frame slide.

4. A straightening machine structure for quickly replacing straightening rollers according to claim 1, characterized in that: The transverse movement device is a horizontally arranged hydraulic cylinder, and the piston rod of the hydraulic cylinder is hinged to the moving side frame.

5. A straightening machine structure for quickly replacing straightening rollers according to claim 1, characterized in that: Also included is a straightening roller system, which is composed of a fixed side tapered shaft, a tie rod, a roller ring assembly and a movable side tapered shaft; The fixed side tapered shaft is arranged on the fixed side frame, and the pull rod is fixed on the fixed side tapered shaft and arranged coaxially therewith; the movable side tapered shaft is arranged on the movable side frame and arranged coaxially therewith the fixed side tapered shaft; the roller ring assembly and the movable side tapered shaft are both provided with pull rod through holes which cooperate with the pull rod, and both ends of the roller ring assembly are also provided with tapered holes which cooperate with the fixed side tapered shaft and the movable side tapered shaft respectively.

6. A straightening machine structure for quickly replacing straightening rollers according to claim 5, characterized in that: The straightening roller system is also provided with a locking device for locking the fixed side tapered shaft, the pull rod, the roller ring assembly and the movable side tapered shaft, and an axial adjustment device for adjusting the axial position of the roller ring assembly.

7. A straightening machine structure for rapid replacement of straightening rollers according to claim 5, characterized in that: It also includes bearing seats which are respectively arranged on the fixed side frame and the movable side frame and slideably cooperate with the fixed side frame and the movable side frame in the vertical direction. The fixed side tapered shaft and the movable side tapered shaft are respectively arranged in the corresponding bearing seats. The fixed side frame and the movable side frame are also provided with vertical adjustment devices for adjusting the vertical position of the bearing.

8. A straightening machine structure for rapid replacement of straightening rollers according to claim 1, characterized in that: The roller ring hoist includes a hook balance beam connected to the lifting drive mechanism, and roller ring hooks arranged on the hook balance beam and matching the number of roller ring assemblies. The trapezoidal boss on the hook surface of the roller ring hook cooperates with the trapezoidal groove in the inner hole of the roller ring assembly to hook the roller ring assembly while achieving axial positioning to prevent slipping.

9. A roller replacement method for quickly replacing straightening rollers, using a straightening machine structure for quickly replacing straightening rollers as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: All roller rings are assembled by hooking the roller ring hoist, and the roller rings are replaced as a whole under the action of the lifting mechanism. The roller ring working position is replaced by relying on the straightening machine structure that can quickly replace the straightening rollers, and finally a fast and centralized roller change is achieved.

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