A roll assembly with convenient roll replacement

Abstract

A convenient roll assembly for roll replacement, relating to the field of steel rolling and forming processing, includes a support frame, rolls, and roll modules for mounting the rolls. The roll module includes two opposing module plates and multiple connecting beams connecting the two module plates. The passive end of the roll is rotatably supported on the passive end module plate, and the power end of the roll passes through the power end module plate and the end face of the support frame to be connected to an external power mechanism. A docking channel for the roll module is provided on the inner side of the end face of one end of the support frame, and a snap-fit ​​groove is provided on the inner side of the end face of the other end. Sliding grooves are provided on the sides of both the docking channel and the snap-fit ​​groove, and the sliding grooves on the docking channel and the snap-fit ​​groove are arranged opposite each other. The side of each module plate has a slider extending towards the sliding groove and slidingly engaging with it. The two ends of the connecting beams are fixedly connected to the opposing sliders on the two module plates, respectively. This invention addresses the problem of roll replacement affecting overall production efficiency in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling and forming processing, specifically a roll assembly for convenient roll replacement. Background Technology

[0002] As the main functional component in steel rolling that directly contacts and shapes the steel, the performance of rolling mill rolls plays a decisive role in the quality of steel products. The surface precision of the rolling mill rolls directly affects the dimensional tolerance control of steel products, while structural integrity relates to the surface finish and mechanical property stability of the steel products. Once wear, deformation, or fatigue damage occurs on the rolling mill roll surface, it will not only lead to quality defects such as dimensional deviations and surface scratches in the steel products, but may also pose serious production safety hazards. Therefore, after continuously processing a specific weight or batch of steel, the rolling mill rolls must be replaced regularly. This is a crucial step in ensuring that the quality of steel products meets industry standards and customer requirements. However, the connection between the current rolling mill rolls and the main body of the equipment relies on multiple sets of supporting structures to achieve fixation and power transmission, including core components such as bearing housings, locking assemblies, and transmission connectors. In actual replacement operations, workers must strictly follow specific procedures to gradually disassemble the above-mentioned supporting structures: first, remove the positioning pins and fastening bolts of the transmission connectors; then, separate the anti-loosening structure of the locking assembly; and finally, disassemble the fixing bracket of the bearing housing. Only after all supporting components have been completely disassembled can the roll to be replaced be removed from the main body of the equipment. When installing a new roll, the above process must be repeated in reverse. Furthermore, key steps such as bearing housing coaxiality calibration and transmission component meshing accuracy adjustment require professional technicians to repeatedly verify using specialized measuring tools. The operation is highly complex and requires stringent precision, which seriously restricts production efficiency. As the steel processing industry transforms towards continuous and efficient operations, downtime caused by roll replacement directly disrupts the normal production rhythm of the production line and reduces the overall production efficiency of the production line corresponding to the roll mill. At the same time, the long replacement operation time may also increase labor costs and equipment idle costs. Utility Model Content

[0003] To address the issue of roll replacement affecting overall production efficiency in existing technologies, this invention provides a roll assembly for convenient roll replacement.

[0004] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a roll assembly for convenient roll replacement, including a support frame, a roll disposed in the support frame, and a roll module for installing the roll. There are two rolls distributed vertically. The roll module includes two oppositely disposed module plates and multiple connecting beams connecting the two module plates. One module plate is a power end module plate, and the other module plate is a passive end module plate. The passive end of the roll is rotatably supported on the passive end module plate. The power end of the roll passes through the power end module plate and the end face of the support frame and is connected to an external power mechanism for transmission. A docking channel for the roll module is opened on the inner side of the end face of one end of the support frame, and a snap-fit ​​groove is provided on the inner side of the end face of the other end. Sliding grooves are provided on the sides of both the docking channel and the snap-fit ​​groove, and the sliding grooves on the docking channel and the snap-fit ​​groove are arranged opposite to each other. The side of the module plate is provided with a slider that extends into the sliding groove and slides in cooperation with the sliding groove. The two ends of the connecting beam are fixedly connected to the sliders on the two module plates respectively.

[0005] As a further optimization of the above technical solution: the sliding grooves are distributed around the docking channel and the snap-fit ​​groove, and the sliders are distributed around the module plate.

[0006] As a further optimization of the above technical solution, the slider has slots, the end of the connecting beam is inserted into the corresponding slots, and is fastened by bolts.

[0007] As a further optimization of the above technical solution, the snap-fit ​​groove is used to snap-fit ​​with the power end module board, and the snap-fit ​​groove is provided with a through hole for the power end of the roll to extend out.

[0008] As a further optimization of the above technical solution, a pressure plate is also provided on the outside of the passive end module plate. The two ends of the pressure plate extend out of the passive end module plate and are connected to the support frame by bolts.

[0009] As a further optimization of the above technical solution, the support frame is provided with a pressure groove that can accommodate the pressure plate.

[0010] As a further optimization of the above technical solution, the pressure plate is provided with docking screw holes for connecting with an external traction device to realize the traction of the roll module into and out of the support frame.

[0011] As a further optimization of the above technical solution, the traction device is a hydraulic device, and the hydraulic rod of the hydraulic device is connected to the mating screw hole through a double-ended bolt.

[0012] As a further optimization of the above technical solution, the support frame has multiple mounting screw holes on the outer side of the end face with the snap-fit ​​groove, which are used to install the protective cover with bolts.

[0013] As a further optimization of the above technical solution, the bottom of the support frame is fixed to the ground or tabletop with anchor bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention modularizes the structure of the rolling mill and bearings, and sets drawer slots on the frame to connect with the modular structures. This allows operators to quickly pull out the parts that need to be replaced for modular replacement. The modularly pulled-out equipment can then be disassembled, thereby reducing the idle time of the rolling mill.

[0015] The roll assembly of this utility model does not require professional technicians to perform complex operations such as bearing housing coaxiality calibration and transmission component meshing accuracy adjustment. The roll module and the rolls inside it have been pre-assembled and precision calibrated before being installed into the support frame. During installation, only the guide of the slide groove is needed to ensure positional accuracy. Ordinary workers can complete the replacement operation after simple training, which reduces the skill level requirements of the operators and reduces labor costs.

[0016] The connecting beam connects the two template blocks. On the one hand, it can reinforce the roll module. On the other hand, when the roll module is moved in or out of the support frame, the connecting beam can slide along the slide rail, acting as a sliding rod to ensure the stability of the roll module when it is moved in or out. Attached Figure Description

[0017] Figure 1 This is a side view of the present invention; Figure 2 for Figure 1 A diagram showing the view from the right. Figure 3 for Figure 1 The diagram shows the right view after the rolls have been removed, so the docking channel 7 can be seen through the diagram and the snap-fit ​​groove 9 can be seen. Figure 4 for Figure 1 A left-view diagram; Figure 5 This is a structural diagram of the module board; Figure 6 This is a schematic diagram showing the connection relationship between the connecting beam and the slider; Reference numerals: 1. Support frame, 2. Module plate, 3. Bearing, 4. Roller, 5. Pressure plate, 6. Slide groove, 7. Docking channel, 8. Connecting beam, 9. Snap-fit ​​groove, 10. Through hole, 11. Pressure groove, 12. Mounting screw hole, 13. Docking screw hole, 14. Slot, 15. Slider. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0019] like Figure 1 , 2 As shown, this utility model discloses a roll assembly for convenient roll replacement, including a support frame 1, rolls 4 disposed in the support frame 1, and a roll module for installing rolls 4. The rolls 4 are two rolls distributed vertically to form a rolling channel to meet the pressing and forming requirements of steel.

[0020] The roll module includes two opposing module plates 2 and multiple connecting beams 8 connecting the two module plates 2. The two module plates 2 are the power end module plate 2 and the passive end module plate 2, respectively. The passive end of the roll 4 is rotatably supported on the passive end module plate 2 via bearings 3, ensuring stable rotation of the roll 4 and reducing frictional loss. The power end of the roll 4 passes sequentially through the end face of the power end module plate 2 and the support frame 1, and is connected to an external power mechanism (such as a motor or reducer) via a coupling to obtain the torque required for rolling. Figure 1 The left end shown is the power end of roll 4, and the right end is the passive end of roll 4.

[0021] Combination Figure 3 As shown, the support frame 1 serves as the mounting base for the entire assembly. Its bottom is fixed to the ground or platform with anchor bolts to ensure the stability of the assembly during the rolling process and prevent positional displacement caused by vibration. The inner side of the right end face of the support frame 1 has a docking channel 7 for the entire roll 4 module to enter and exit. The inner side of the left end face has a snap-fit ​​groove 9 that is adapted to the power end module plate 2. The snap-fit ​​groove 9 is used to snap with the power end module plate 2, and the snap-fit ​​groove 9 has a through hole 10 for the power end of the roll 4 to extend out.

[0022] Both the docking channel 7 and the snap-fit ​​groove 9 have sliding grooves 6 on their sides, and the sliding grooves 6 on the docking channel 7 and the snap-fit ​​groove 9 are arranged opposite each other to form a complete guide path. Figure 5 As shown, each side of the module plate 2 is provided with a slider 15 that extends into the slide groove 6 and slides in cooperation with the slide groove 6. A certain gap is left between the slide groove 6 and the slider 15 (this is the prior art), which ensures smooth sliding and prevents the roller 4 module from shaking during the sliding process.

[0023] like Figure 1 , 5As shown in Figure 6, both ends of the connecting beam 8 are fixedly connected to corresponding sliders 15 on the two module plates 2. Slots 14 are provided on the sliders 15, and the ends of the connecting beam 8 are inserted into the corresponding slots 14 and fastened with bolts (not shown in the figure). This connection method facilitates the individual disassembly and maintenance of the connecting beam 8, while ensuring the connection strength between the connecting beam 8 and the sliders 15, preventing loosening due to vibration during rolling. The upper, lower, and outer end faces of the connecting beam 8 and the corresponding sliders 15 are all flush, and both are adapted to the slide groove 6. During the movement of the roll module into or out of the support frame, the connecting beam 8 can act as a sliding rod that can slide along the slide groove 6. The connecting beam 8 serves two purposes: firstly, it reinforces the module plates 2 and improves the overall rigidity of the roll 4 module; secondly, the sliding of the connecting beam 8 along the slide groove 6 with the sliders 15 helps the roll module maintain stable movement.

[0024] The slide groove 6 is distributed around the docking channel 7 and the snap-fit ​​groove 9, and the slider 15 is distributed around the module plate 2 to form a four-sided guide structure. Compared with the ordinary two-sided guide, it can effectively prevent the roller 4 module from tilting or jamming during the sliding process, and can be used for the heavy roller 4.

[0025] Continue to refer to Figure 1 A pressure plate 5 is also provided on the outer side of the passive end module plate 2. The pressure plate 5 is fixedly connected to the passive end template, and the connection method can be bolted or welded. The two ends of the pressure plate 5 extend out of the passive end module plate 2 and are connected to the support frame 1 by bolts. When the roll 4 module is installed in place, the pressure plate 5 can press the passive end module plate 2 tightly onto the support frame 1 to prevent the roll 4 module from sliding out of the support frame 1 due to force during the rolling process. When it is necessary to remove the roll module, the bolts between the pressure plate 5 and the support frame 1 are removed. The pressure plate 5 is provided with a docking screw hole 13 for connecting with an external traction device. In this embodiment, the traction device is a hydraulic device. The hydraulic rod of the hydraulic device is connected to the docking screw hole 13 by a double-ended bolt. When changing the roll 4, the hydraulic device is started to drive the roll 4 module to smoothly enter and exit the support frame 1 along the slide 6.

[0026] like Figure 3 As shown, the support frame 1 is provided with a pressure groove 11 that can accommodate the pressure plate 5, so that the outer surface of the pressure plate 5 is flush with the end face of the support frame 1, and the pressure plate 5 is prevented from protruding and interfering with other components.

[0027] like Figure 4 As shown, the support frame 1 has multiple mounting screw holes 12 on the outer side of the end face with the snap-fit ​​groove 9, which are used to install the protective cover with bolts. The protective cover is placed on the power end of the extended roll 4, which can effectively prevent iron filings, oil stains and other substances generated during the rolling process from entering the transmission components, and at the same time play a safety protection role, avoiding safety accidents caused by workers accidentally touching the rotating components.

[0028] For ease of understanding, the roll replacement process in this embodiment is briefly described as follows: First, unscrew the bolts on the mounting screw hole 12 and remove the protective cover; then remove the connecting bolts between the power end of the roll 4 and the reducer coupling to separate the roll 4 from the power mechanism. Next, unscrew the bolts on the pressure groove 11, connect the hydraulic rod of the hydraulic device to the docking screw hole 13 of the pressure plate 5 through the double-ended bolt, start the hydraulic device, and pull the old roll 4 module out from the docking channel 7 along the slide 6 to the outside of the support frame 1; finally, align the pre-assembled new roll 4 module with the slide 6 of the docking channel 7, start the hydraulic device, and pull the new module into the support frame 1 until the power end module plate 2 is inserted into the snap-fit ​​groove 9; fix the pressure plate 5 on the support frame 1, connect the power end of the roll 4 to the coupling, install the protective cover and tighten the bolts to complete the replacement.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roll assembly for convenient roll replacement, characterized in that; It includes a support frame (1), a roll (4) set in the support frame (1), and a roll module for mounting the roll (4). There are two rolls (4) arranged vertically. The roll module includes two oppositely arranged module plates (2) and multiple connecting beams (8) connecting the two module plates (2). One module plate (2) is the power end module plate (2), and the other module plate (2) is the passive end module plate (2). The passive end of the roll (4) is rotatably supported on the passive end module plate (2). The power end of the roll (4) passes through the end face of the power end module plate (2) and the support frame (1) and is connected to the external power mechanism. The support frame (1) has a docking channel (7) on the inner side of one end face for the roll module to pass through, and a snap-fit ​​groove (9) on the inner side of the other end face. The docking channel (7) and the snap-fit ​​groove (9) are both provided with sliding grooves (6), and the sliding grooves (6) on the docking channel (7) and the sliding grooves (6) on the snap-fit ​​groove (9) are arranged opposite to each other. The side of the module plate (2) is provided with sliders (15) that extend toward the sliding grooves (6) and slide in cooperation with the sliding grooves (6). The two ends of the connecting beam (8) are fixedly connected to the sliders (15) on the two module plates (2) respectively.

2. A roll assembly for convenient roll change according to claim 1, characterized in that: The grooves (6) are distributed around the docking channel (7) and the snap-fit ​​groove (9), and the sliders (15) are distributed around the module plate (2).

3. A roll assembly for convenient roll change according to claim 1, characterized in that: The slider (15) has a slot (14) and the end of the connecting beam (8) is inserted into the corresponding slot (14) and fastened by bolts.

4. A roll assembly for convenient roll change according to claim 1, characterized in that: The snap-fit ​​groove (9) is used to snap-fit ​​with the power end module plate (2), and the snap-fit ​​groove (9) is provided with a through hole (10) for the power end of the roll (4) to extend out.

5. A roll assembly for convenient roll change according to claim 1, characterized in that: The passive end module plate (2) is also provided with a pressure plate (5) on the outside. The two ends of the pressure plate (5) extend out of the passive end module plate (2) and are connected to the support frame (1) by bolts.

6. A roll assembly for convenient roll change according to claim 5, characterized in that: The support frame (1) is provided with a pressure groove (11) that can accommodate the pressure plate (5).

7. A roll assembly for convenient roll change according to claim 5, wherein: The pressure plate (5) is provided with a docking screw hole (13) for connecting with an external traction device to realize the traction of the roll module entering and exiting the support frame (1).

8. A roll assembly for convenient roll change according to claim 7, characterized in that: The traction device is a hydraulic device, and the hydraulic rod of the hydraulic device is connected to the mating screw hole (13) by a double-ended bolt.

9. A roll assembly for convenient roll change according to claim 1, characterized in that: The support frame (1) has multiple mounting screw holes (12) on the outer side of the end face of the snap-fit ​​groove (9).

10. A roll assembly for convenient roll change according to claim 1, characterized in that: The bottom of the support frame (1) is fixed to the ground or tabletop by anchor bolts.

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