Torque transmission device for a hot-rolling mill roll cleaner

Abstract

A torque transmission device of a hot rolling mill roll cleaner comprises a motor, the motor is arranged on a motor mounting seat, the motor mounting seat is arranged on a cross beam of a hot rolling mill outside equipment rack, and an output shaft of the motor is perpendicular to a main transmission shaft of a working roll of the hot rolling mill; a bevel gear reversing speed reducer, the bevel gear reversing speed reducer is arranged on a speed reducer mounting seat, the speed reducer mounting seat is arranged above an adapter shaft balance rack of the hot rolling mill, a center axis of an input end of the bevel gear reversing speed reducer and a center axis of an output end of the bevel gear reversing speed reducer are arranged vertically, the input end of the bevel gear reversing speed reducer is connected with the output shaft of the motor through a first coupling, the output end of the bevel gear reversing speed reducer is connected with a first end of a second coupling, and a second end of the second coupling is used for being connected with the roll cleaner in the hot rolling mill. The device solves the problem that a roll cleaner coupling of a torque transmission device of a roll cleaner in the prior art has a torque in work, reduces a failure rate of the torque transmission device, and improves operation efficiency of the hot rolling mill.

Description

Technical Field

[0001] This utility model belongs to the field of hot rolling mill technology, specifically relating to a torque transmission device for a hot rolling mill clearing roll. Background Technology

[0002] During the hot rolling process of aluminum alloy strip, an aluminum-adhering layer will uniformly form on the surface of the rolls. If the aluminum-adhering layer is too thick, it will lead to uneven color and roughness of the rolled plate, affecting the quality of the plate. Therefore, a roll cleaner, i.e., a cleaning brush roll, needs to be equipped on the inlet or outlet side of the work roll of the rolling mill to clean the aluminum-adhering layer on the roll surface and ensure that the aluminum-adhering layer on the work roll is within a suitable range or does not adhere to the plate.

[0003] The high-speed rotation of the cleaning roller requires a power source, that is, a torque transmission device is needed to drive the rotation of the cleaning roller. For example... Figure 1 As shown, the torque transmission device 100 generally includes a motor 1, a reducer 2, and a cleaning roller coupling 3. The torque output by the motor 1 and the reducer 2 is transmitted through the cleaning roller coupling 3 to drive the cleaning roller to rotate, thereby completing the cleaning of the work roller surface. Figure 1 The dashed line S represents the outer end face of the transmission side archway of the hot rolling mill. Therefore, the work rolls and cleaning rolls of the hot rolling mill are located to the left of the dashed line S. Typically, a ZDY series hardened gear reducer is selected.

[0004] In a hot rolling mill, the work rolls generally include an upper work roll and a lower work roll. The upper and lower work rolls are connected to an external main reduction gearbox via upper connecting shaft 4 and lower connecting shaft 5, respectively. The upper connecting shaft 4 and lower connecting shaft 5 are quite long, reaching several meters in length. Therefore, a connecting shaft balancing device is installed in the middle to support and balance the upper and lower connecting shafts. During production, the upper and lower work rolls need to be raised and lowered, which also requires the upper connecting shaft 4 and lower connecting shaft 5 to be raised and lowered. Therefore, a certain amount of space is reserved above the upper connecting shaft 4 for movement. The work rolls in a hot rolling mill have a large diameter, so the upper and lower connecting shafts also need to have a large diameter. Thus, to accommodate the raising and lowering of the upper connecting shaft, space needs to be reserved not only in the vertical direction but also in the horizontal direction. Furthermore, the cleaning roller needs to be raised and lowered synchronously with the corresponding upper or lower work roll. During raising and lowering, the cleaning roller has a lowest position, a highest position, and a middle position, with the lowest position typically serving as the working position of the cleaning roller. When the cleaning roller is in the working position, the torque transmission of the cleaning roller is most ideal if its central axis is concentric with the central axis of the cleaning roller coupling and the central axis of the reducer output end. Typically, the cleaning roller coupling 3 is a universal joint, including a splined shaft and splined sleeve with a sliding fit in the middle, and universal joints connecting to the ends of the splined shaft and splined sleeve respectively. Therefore, the central axis of the splined shaft and splined sleeve serves as the central axis of the cleaning roller coupling.

[0005] However, the vertical and horizontal space reserved for the lifting of the upper connecting shaft 4 on the hot rolling mill currently interferes with the installation of the torque transmission device 100 of the cleaning roll. Therefore, the installation positions of the motor 1 and the reducer 2 need to avoid the lifting range of the upper connecting shaft 4. At the same time, the universal joint has a certain axial angle, and the installation of the motor 1 and the reducer 2 must both avoid the lifting range of the upper connecting shaft 4 and meet the maximum axial angle requirement of the cleaning roll coupling 3.

[0006] Therefore, a suspended platform 7, offset from the lifting range of the upper connecting shaft 4, is currently set above the connecting shaft balancing stand 6 of the hot rolling mill. A motor 1 and a reducer 2 are installed on the suspended platform 7 to avoid interference with the lifting of the upper connecting shaft in the vertical direction and the radial direction relative to the upper connecting shaft. Figure 2 As shown. Although this installation method can avoid spatial interference with the lifting and lowering of the upper connecting shaft, when the cleaning roller is in the working position, it is difficult for the central axis of the cleaning roller to be concentric with the central axis of the cleaning roller coupling 3 and the output shaft of the reducer. This results in obvious torque in the cleaning roller coupling during operation, leading to issues such as auxiliary torque and overload, making it difficult to achieve the ideal torque transmission effect and affecting the performance and service life of the cleaning roller torque transmission device.

[0007] In addition, when motor 1 is installed on the suspended platform 7, it is fixed by the flange as a whole. During use, there is a potential equipment failure risk of the flange on the fixed side of motor 1 cracking due to vibration. Utility Model Content

[0008] The purpose of this utility model is to provide a torque transmission device for a hot rolling mill cleaning roll. This device overcomes the above-mentioned technical problems and achieves stable operation of the equipment by changing the layout of the motor and reducer in the torque transmission device.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a torque transmission device for a hot rolling mill cleaning roll, including a motor, the motor being mounted on a motor mounting base, the motor mounting base being mounted on a crossbeam of the equipment frame on the outside of the hot rolling mill, and the output shaft of the motor being perpendicular to the main drive shaft of the hot rolling mill work roll; A bevel gear reversing reducer is mounted on a reducer mounting base, which is positioned above the shaft balancing frame of the hot rolling mill. The input and output center axes of the bevel gear reversing reducer are arranged perpendicularly. The input end of the bevel gear reversing reducer is connected to the output shaft of the motor via a first coupling, and the output end of the bevel gear reversing reducer is connected to the first end of a second coupling. The second end of the second coupling is used to connect to the cleaning roll device inside the hot rolling mill.

[0010] Furthermore, the output end of the bevel gear reversing reducer is concentric with the first end of the second coupling.

[0011] Furthermore, the first coupling is a universal joint.

[0012] Furthermore, the second coupling is a universal joint.

[0013] The beneficial effects of this utility model are as follows: This utility model arranges the motor on a side away from the main drive shaft of the hot rolling mill using a bevel gear reversing reducer. This avoids the lifting space of the main drive shaft and prevents flange cracking caused by long-term suspended installation of the motor. Simultaneously, the motor is connected to the input end of the bevel gear reversing reducer via a first coupling, achieving flexible torque transmission and solving the problem of external force on the end cover during motor operation in existing technologies. Furthermore, the layout of this utility model allows the reducer output end to be concentric with the cleaning roller via a second coupling, solving the problem of torque in the second coupling (equivalent to the existing cleaning roller coupling) during cleaning roller operation. This reduces the failure rate of the torque transmission device of the hot rolling mill cleaning roller and improves the operating efficiency of the hot rolling mill. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the torque transmission device of the cleaning roll of a hot rolling mill in the prior art. The upper connecting shaft is not raised in the diagram. Figure 2 This is a schematic diagram of the motor arrangement principle of a torque transmission device in the prior art. The diagram shows the state after the upper shaft is raised. Figure 3 for Figure 1 A top view with some components omitted; Figure 4 This is a schematic diagram of the torque transmission device for the cleaning roller of this utility model. The upper connecting shaft is not raised in the figure. Figure 5 A schematic diagram showing the state of the torque transmission device of the cleaning roller when the cleaning roller is in a horizontal position; Figure 6 for Figure 5 A top view with some components omitted; The markings in the diagram are: 1. Motor, 2. Reducer, 3. Cleaning roller coupling, 4. Upper shaft, 5. Lower shaft, 6. Shaft balancing frame, 7. Suspended platform, 8. Shaft bearing housing, 9. Bevel gear reversing reducer, 10. First coupling, 11. Second coupling, 12. Reducer mounting base, 13. Motor mounting base. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention in any way.

[0016] See attached document Figure 4 , 5As shown in Figure 6, a torque transmission device for a hot rolling mill clearing roll is installed on the shaft balancing frame 6 of the hot rolling mill, including a motor 1, a bevel gear reversing reducer 9, a first coupling 10, and a second coupling 11.

[0017] The output shaft of motor 1 is perpendicular to the direction of the main drive shaft of the hot rolling mill work roll. The main drive shaft of the hot rolling mill work roll includes an upper connecting shaft 4 and a lower connecting shaft 5 that drive the upper and lower work rolls respectively. The bevel gear reversing reducer 9 is used to connect motor 1 and the second coupling 11, changing the torque transmission direction of motor 1 and outputting it to the second coupling 11. The second coupling 11 transmits torque to the connected cleaning roll, driving the cleaning roll to rotate.

[0018] The device also includes a motor mounting base 13 and a reducer mounting base 12, with the line connecting the two mounting bases perpendicular to the main drive shaft.

[0019] The motor mounting base 13 is set on the crossbeam of the equipment frame outside the hot rolling mill. The motor 1 is fixed on the motor mounting base 13, and the output shaft of the motor 1 faces the main drive shaft. It is connected to the input end of the bevel gear reversing reducer 9 through the first coupling 10 to realize the flexible transmission of torque to the bevel gear reversing reducer 9.

[0020] The reducer mounting base 12 is positioned above the shaft balancing frame 6. The bevel gear reversing reducer 9 is fixed on the reducer mounting base 12. The input end of the bevel gear reversing reducer 9 is connected to the first coupling 10 to input the torque of the motor 1. The output end of the bevel gear reversing reducer 9 is connected to the first end of the second coupling 11, and the second end of the second coupling 11 is connected to the cleaning roller of the hot rolling mill, thereby outputting torque and driving the cleaning roller to rotate. The axis of the input end and the axis of the output end of the bevel gear reversing reducer 9 are perpendicular to each other, realizing the reversal of torque output.

[0021] Compared to Figure 1-3 As shown in the prior art, the installation reference of the bevel gear reversing reducer 9 in this device can be lowered by 200mm on the shaft balancing frame 6 and offset by 100mm radially to the main drive shaft. This allows the central axis of the output end of the bevel gear reversing reducer 9 to be concentric with the central axis of the second coupling 11 and the central axis of the clean roller when the clean roller is in the working position. This enables the torque transmission device of the clean roller to achieve the best torque transmission effect, reduces the failure rate of the torque transmission device, and ensures the service life of the torque transmission device.

[0022] In this device, the motor 1 does not need to be installed in the same position as the bevel gear reversing reducer 9. Therefore, the motor 1 can be completely fixed on the motor mounting base 13, and there will be no partial suspension, thus avoiding damage to the motor mounting base 13 caused by the vibration of the motor 1 during operation.

[0023] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of this utility model with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model are within the protection scope of the pending claims.

Claims

1. A torque transmission device for a hot rolling mill clean roll, characterized in that: The device includes a motor, which is mounted on a motor mounting base, which is mounted on a crossbeam of the equipment frame on the outside of the hot rolling mill. The output shaft of the motor is perpendicular to the main drive shaft of the hot rolling mill work roll. A bevel gear reversing reducer is mounted on a reducer mounting base, which is positioned above the shaft balancing frame of the hot rolling mill. The input and output center axes of the bevel gear reversing reducer are arranged perpendicularly. The input end of the bevel gear reversing reducer is connected to the output shaft of the motor via a first coupling, and the output end of the bevel gear reversing reducer is connected to the first end of a second coupling. The second end of the second coupling is used to connect to the cleaning roll device inside the hot rolling mill.

2. The torque transmission device according to claim 1, characterized in that: The output end of the bevel gear reversing reducer is concentric with the first end of the second coupling.

3. The torque transmission device according to claim 1, characterized in that: The first coupling is a universal joint.

4. The torque transmission device according to claim 1, characterized in that: The second coupling is a universal joint.

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