Conveying device for replacement roller of rolling mill

Abstract

The conveying device comprises a mounting frame and a roller array, and is characterized in that the roller array is provided with a plurality of rollers arranged in an array shape, the column direction of the roller array is the front-back direction and is the same as the conveying direction of the replacement roller, a rotating shaft is fixed to the axis of each roller, and the rotating shaft is connected with the mounting frame. The rotating shafts of the adjacent rollers in the same row are coaxially connected with each other, so that the rollers in each row are arranged on the mounting frame in parallel, a driving device is arranged on one side of the mounting frame, the power output end of the driving device is in transmission connection with the rotating shafts of the adjacent rollers, and the rotating shafts are driven to rotate and drive the rollers in the same row to synchronously roll. After an old replacement roller is replaced, the old replacement roller is placed on the roller array, the driving device is started, and the replacement roller can be automatically carried away; a new replacement roller can also be directly placed on the rolling wheel array, the driving device is controlled to rotate reversely, and the new replacement roller can be automatically conveyed to the rolling mill. And through the steering device, bidirectional conveying can be carried out at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling mills, and in particular to a conveying device for replacing rollers of a rolling mill. Background Art

[0002] Currently, when the DMS rolling mill switches from any other specifications to the production of Gr series 700-840MM specifications and Ni series 700-900MM specifications during the production process, the upper idler roller needs to be replaced. It takes about 60 minutes from preparing the counterweight to completing the replacement. The dangerous sources involved include the coordinated operation of the counterweight, lifting machinery, and crane.

[0003] Chinese utility model application number 201220329527.5 discloses a cold rolling mill work roll changing trolley. The trolley comprises a travel unit, a lifting unit mounted on the travel unit, a side shift unit located above the lifting unit, a hydraulic unit for providing hydraulic control to the travel unit, the lifting unit, and the side shift unit, an electrical control box for controlling the hydraulic unit, and a plurality of cold rolling mill work rolls mounted on the side shift unit. This type of roll changing trolley can also be used to replace upper idler rolls in DMS mills, saving time and effort while avoiding the dangerous interaction between a human and a counterweight.

[0004] The aforementioned patented side shift unit features a series of V-shaped rollers for storing new and old work rolls. These rollers are manually pushed forward and backward to facilitate work roll transport. While automated control of travel, lifting, and side shifting is achieved through a hydraulic unit and an electrical control box, the roller transport process in the side shift unit still relies on manual operation, resulting in inefficiencies in efficiency, precision, and safety. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to propose a conveying device capable of automatically conveying replacement rollers of a rolling mill in response to the above technical status quo.

[0006] The second technical problem to be solved by the present invention is to propose a conveying device capable of conveying replacement rollers of a rolling mill in both directions at the same time in response to the above technical status quo.

[0007] The third technical problem to be solved by the present invention is to propose a conveying device capable of collecting replacement rollers of new and old rolling mills in response to the above-mentioned technical status quo.

[0008] The technical solution adopted by the present invention to solve the first technical problem is: a conveying device for replacing rollers of a rolling mill, comprising a mounting frame and a roller array, characterized in that the roller array has a plurality of rollers arranged in an array shape, and the column direction of the roller array is the front-to-back direction, which is the same as the conveying direction of the replacement rollers. A rotating shaft is fixed at the axis of the roller, and the rotating shafts of adjacent rollers in the same row are coaxially connected to each other, so that each row of rollers is arranged in parallel on the mounting frame, and a driving device is provided on one side of the mounting frame, and the power output end of the driving device is connected to the rotating shaft of the adjacent roller to drive the rotating shaft to rotate and drive the rollers in the same row to roll synchronously.

[0009] Compared to existing technologies, the present invention features coaxially connected roller axes in the same row of rollers in the roller array. A drive mechanism is installed on one side of the mounting frame, which drives the axes of adjacent rollers, thereby driving the entire row of rollers to rotate synchronously. When an old replacement roller is removed, it is placed on the roller array and the drive mechanism is activated, automatically transporting it away. A new replacement roller can also be placed directly on the roller array and the drive mechanism is controlled to rotate in the opposite direction, automatically transporting it to the rolling mill.

[0010] Furthermore, the conveying device includes a linkage that is connected to the outer shaft of each row of the roller array, so that each row of rollers is linked together. With this structure, only a single drive device is needed to control the synchronous rolling of the entire roller array, enabling more stable transportation of replacement rollers.

[0011] Specifically, the linkage includes guide wheels corresponding to the number of roller rows, the rotation center of each guide wheel is fixedly connected to the rotating shaft outside each row in the roller array, adjacent guide wheels are connected by belts, and the driving device is transmission-connected to any of the guide wheels.

[0012] Preferably, a placement slot is provided in the middle of the mounting frame, extending along the column direction of the roller array. A roller array, a linkage, and a drive device are located on either side of the placement slot. The placement slot can be used to temporarily store a replacement roller, which can then be pushed from the placement slot to the left and right sides to be delivered to the roller array.

[0013] As a solution to the second technical problem, preferably, couplings are provided between adjacent rollers in the same row of the same roller array. The couplings are respectively connected to two adjacent rotating shafts to control the connection and disconnection of the two rotating shafts. A bearing is disposed on an outer sleeve of the coupling, and the bearing is supported by a fixed seat, which is provided on the mounting frame. When the coupling disconnects the two adjacent rotating shafts, the roller on one side is still driven by the drive device, while the roller on the other side is undriven and can roll freely. Therefore, while one roller is transporting a replacement roller in one direction, the roller on the other side can be used to transport a replacement roller in the opposite direction.

[0014] Specifically, annular brushes are provided at both ends of the coupling, and an iron block fixed with an electromagnetic coil is provided inside the coupling. The electromagnetic coil is spirally designed and wound around the outer wall of the iron block. The interfaces at both ends of the electromagnetic coil are electrically connected to the brushes at both ends of the coupling respectively.

[0015] In order to enable the driving device to simultaneously drive bidirectional conveying, the driving device further includes a steering device, which includes a first gear respectively mounted on the two rotating shafts connected to the coupling, and a liftable second gear is provided below and between the two first gears. The first gear and the second gear are both frustum-shaped, with the top surfaces of the two first gears facing each other and the top surface of the second gear facing upwards;

[0016] When the second gear rises, it meshes with the two first gears at the same time, the coupling controls the two rotating shafts to disconnect, and the two adjacent rollers roll in opposite directions;

[0017] When the second gear descends, the second gear is disengaged from the two first gears, the coupling controls the connection of the two rotating shafts, and the two adjacent rollers roll in the same direction.

[0018] As a solution to the third technical problem, preferably, a collecting trough is respectively provided on both sides of the mounting frame, and the collecting trough is used to collect the replacement rollers.

[0019] The collection trough is equipped with two stopper levers extending left and right, located on both sides. One end of the stopper lever is pivotally connected to the collection trough, while the other end swings upwards to block the transport of replacement rollers. The stopper levers stop the transported replacement rollers in the middle of the mounting frame. The operator can manually move the replacement rollers into the collection trough for storage. During this process, the rollers on the other side of the trough can continue to transport the replacement rollers.

[0020] In order to prevent the limit rod from being pushed away by the conveying replacement roller, preferably, the mounting frame is provided with a connecting frame extending forward and backward, and the connecting frame is arranged at the interval between adjacent rollers of the same roller array. A positioning groove is provided on the upper surface of the connecting frame, and the positioning groove is adapted to the position of the limit rod. When the free end of the limit rod swings onto the mounting frame, the limit rod is embedded in the positioning groove for positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of an embodiment of the present invention when some of the limiting rods block the conveying;

[0023] Figure 3 This is a schematic structural diagram of a steering device for one-way conveying of a roller array according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a steering device for bidirectional conveying of a roller array according to an embodiment of the present invention;

[0025] Figure 5 for Figure 1 A magnified schematic diagram of point A in the middle;

[0026] Figure 6 A side view of an embodiment of the present invention and a schematic diagram of the internal structure of a linkage;

[0027] Figure 7 Schematic diagram and partial cross-sectional view of the structure of a coupling according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 7 FIG. 1 is a preferred embodiment of a conveying device for replacing rollers of a rolling mill according to the present invention. The rolling mill in this embodiment is a DMS rolling mill, and the replacement roller is an upper idler roller.

[0030] The conveying device of this embodiment is as follows Figure 1 As shown, the device comprises a mounting frame 1, which is composed of a base plate and two opposing side plates. A bracket 11 is provided at each of the four corners of the mounting frame 1, and a base 12 is provided below the bracket 11. The design of the bracket 11 and base 12 can increase the stability of the device and reduce noise transmission to a certain extent.

[0031] Two roller arrays 2 are provided on the mounting frame 1. Each roller array 2 has 10 rollers 21 arranged in a 2-by-5 array. The roller array 2 is oriented in a front-to-back direction, which is the same as the conveying direction of the upper idler roller to be replaced.

[0032] A placement slot 13 is located in the center of the mounting frame 1. This slot extends forward and backward, with a roller array 2 on each side. The top surfaces of both slot 13 and roller 21 are inwardly curved, allowing them to fit snugly around the upper idler roller to be replaced, preventing it from rolling. The shallow depth of the arc facilitates manual movement of the upper idler roller. Slot 13 can be used to temporarily store a replacement roller, which can then be pushed from slot 13 to the left and right, thereby delivering it to roller array 2. The top surface of roller 21 exceeds the highest point on either side of slot 13 by approximately one centimeter to prevent interference between the roller array 2 and slot 13 when transporting the upper idler roller.

[0033] A rotating shaft 22 is fixed at the axis of the roller 21. The rotating shafts 22 of adjacent rollers 21 in the same row of the same roller array 2 are coaxially connected together, so that each row of rollers 21 is arranged in parallel on the mounting frame 1. A linkage 3 is provided on each side of the mounting frame 1. Figure 6As shown, the linkage 3 includes guide wheels 31 corresponding to the number of rows of rollers 21. The rotation center of each guide wheel 31 is fixedly connected to the outer rotation shaft 22 of each row in the roller array 2. Adjacent guide wheels 31 are connected by a belt 32, which enables the rollers 21 in each row to rotate in a coordinated manner. A drive device 33 is provided on the outer side of the linkage 3. Drive device 33 is in transmission connection with any guide wheel 31 of the linkage 3 to control the synchronous rotation of the entire roller array 2, ensuring smoother transportation of replacement rollers. Drive device 33 can be a rotary motor.

[0034] like Figure 3 and 4 As shown, in this embodiment, a coupling 4 is provided between adjacent rollers 21 in the same row of the same roller array 2. The coupling 4 is connected to two adjacent rotating shafts 22, controlling the connection and disconnection of the two rotating shafts 22. A bearing 41 is provided on the outer surface of the coupling 4, supported by a fixed seat 42, which is mounted on the mounting frame 1. When the coupling 4 disconnects two adjacent rotating shafts 22, the roller 21 on one side remains driven by the drive device 33, while the roller 21 on the other side is undriven and can roll freely. This allows the roller 21 on one side to transport a replacement roller in one direction while the roller 21 on the other side transports the replacement roller in the opposite direction.

[0035] The coupling 4 is an electromagnetic design and is controlled by an electromagnetic controller 43. Figure 7 As shown, coupling 4 is equipped with annular brushes 44 at both ends. Inside coupling 4 is an iron block 46 secured by an electromagnetic coil 45. The electromagnetic coil 45 is spirally designed and wound around the outer wall of the iron block 46. The interfaces at both ends of the electromagnetic coil 45 are electrically connected to the brushes 44 at both ends of the coupling 4. The brushes 44 prevent interference from wire entanglement and other positioning issues when coupling 4 rotates. When the electromagnetic controller 43 is activated, it supplies current to the interior of coupling 4. The iron block 46, under the action of the coil, generates a magnetic force, which then rotates the two shafts 22 together.

[0036] In order to enable the driving device 33 to drive the bidirectional conveying at the same time, this embodiment also designs Figure 3 and Figure 4The steering device 5 shown in FIG. 1 includes a first gear 51, each mounted on the two rotating shafts 22 connected by the coupling 4. A second gear 52, which can be raised and lowered, is positioned between the two first gears 51. Both the first gear 51 and the second gear 52 are frustoconical in shape, with the top surfaces of the two first gears 51 facing each other and the top surface of the second gear 52 facing upward. A hydraulic cylinder 53 is secured below the mounting frame 1, and a lifting frame 54 is mounted on the mounting frame 1. The output of the hydraulic cylinder 53 passes through the bottom plate of the mounting frame 1 and acts on the lifting frame 54. The second gear 52, mounted within the lifting frame 54, rises and falls with the mounting frame 1. Furthermore, the mounting frame 1 is equipped with a synchronizer, connecting all the hydraulic cylinders 53 to enable synchronous control.

[0037] like Figure 4 As shown, when the second gear 52 rises, the second gear 52 engages with the two first gears 51 at the same time, the coupling 4 controls the two rotating shafts 22 to be disconnected, and the two adjacent rollers 21 roll in the opposite direction; Figure 3 As shown, when the second gear 52 descends, the second gear 52 is disengaged from the two first gears 51 , the coupling 4 controls the connection of the two rotating shafts 22 , and the two adjacent rollers 21 roll in the same direction.

[0038] In this embodiment, a collecting trough 6 is provided on both sides of the mounting frame 1. The collecting trough 6 is used to collect the replacement rollers. The bottom surface of the collecting trough 6 is tilted downward along the outer side. The front and rear sides of the collecting trough 6 are respectively provided with mounting seats 61. Figure 5 As shown, a limit rod 62 extending left and right is installed in the mounting seat 61. One end of the limit rod 62 is swung and connected to the mounting seat 61 as the rotation center. A servo motor 63 is fixed to the outside of the mounting seat 61. The output shaft of the servo motor 63 acts on the rotation center of the limit rod 62. The other end of the limit rod 62 can swing to the top of the mounting frame 1 and block the transportation of the replacement roller. Figure 2 As shown, the conveyed replacement roller is stopped in the middle of the mounting frame 1 by the stopper rod 62. The operator can manually move the replacement roller into the collection tank 6 for storage. During this step, the rollers 21 on the other side of the storage tank 13 are aligned to continue conveying the replacement roller. The free end of the stopper rod 62 can also swing back. The side of the collection tank 6 is provided with a stopper plate 64 extending forward and backward to prevent the stopper rod 62 from swinging back excessively.

[0039] To prevent limiting rod 62 from being pushed away by the conveying replacement roller, mounting frame 1 is equipped with a connecting frame 14 extending forward and backward. Connecting frame 14 is arranged between adjacent rollers 21 of the same roller array 2. A positioning groove 15 is formed on the upper surface of connecting frame 14. Positioning groove 15 matches the position of limiting rod 62. When the free end of limiting rod 62 swings onto mounting frame 1, limiting rod 62 is positioned in positioning groove 15. Connecting frame 14 has an upwardly convex arc design, which facilitates the adjustment of the upper idler roller between different conveyor tracks.

[0040] In this embodiment, the drive device 33 , the servo motor 63 , the hydraulic cylinder 53 , and the electromagnetic controller 43 are all connected to the control panel 7 for signals and are controlled by the control panel 7 .

[0041] The control steps of this embodiment are as follows:

[0042] S1: Press the corresponding toggle buttons 1 and 2 on the control panel 7, and the rotating motors on both sides start working. The buttons 1 and 2 have a three-speed design. When they are in the middle, they stop, and when they are on both sides, they adjust the forward and reverse rotation of the rotating motor. The rotating motor drives the roller 21 to rotate synchronously in one direction, so that the entire conveying track can convey the idler roller;

[0043] S2: This embodiment has four conveying tracks. The two tracks in the middle are named Track 2, and the two tracks on the outside are named Track 1. The conveying direction of Track 1 is the same as the rotation direction of the rotating motor. When the steering device 5 is not used, the conveying directions of Track 1 and Track 2 are the same. When the conveying direction of Track 2 needs to be changed, the control panel 7 can press the button 3 or the button 4 corresponding to the hydraulic cylinder 53 on both sides. At this time, the hydraulic cylinder 53 will drive the lifting frame 54 to move upward, so that the second gear 52 is engaged with the two first gears 51 at the same time. Then, the conveying directions of Track 2 and Track 1 will show opposite effects.

[0044] S3: The use of the collection trough 6 can be performed when there are too many upper idler rollers. When the upper idler rollers are transported on track 1 and track 2, the four servo motors 63 can be respectively controlled to rotate by using buttons 6, 7, 8, and 9 on the control panel 7, which correspond to the four servo motors 63. The limit rods 62 at the corresponding positions are rotated into the positioning slots 15 at the upper end of the connecting frame 14. The movement of the upper idler rollers at the upper ends of track 1 and track 2 will be blocked. Then, the upper idler rollers need to be manually moved into the collection trough 6 to participate in the subsequent replacement process.

[0045] S4: The upper idle rollers between the collecting troughs 6 on both sides can also be transported in parallel. Here, it is only necessary to adjust the limit rods 62 to the position of the positioning groove 15, and then manually move the idle rollers inside the collecting troughs 6 on both sides to replace them.

Claims

1. A conveying device for replacing rollers in a rolling mill, comprising a mounting frame (1) and a roller array (2), characterized in that: The roller array (2) comprises a plurality of rollers (21) arranged in an array shape. The column direction of the roller array (2) is a front-to-back direction, which is the same as the conveying direction of the replacement roller. A rotating shaft (22) is fixed at the axis of the roller (21). The rotating shafts (22) of adjacent rollers (21) in the same row are coaxially connected to each other, so that the rollers (21) in each row are arranged in parallel on the mounting frame (1). A driving device (33) is provided on one side of the mounting frame (1). The power output end of the driving device (33) is in transmission connection with the rotating shafts (22) of adjacent rollers (21), driving the rotating shafts (22) to rotate and drive the rollers (21) in the same row to roll synchronously.

2. The conveying device for replacement rollers of a rolling mill according to claim 1, characterized in that: It also includes a linkage (3) connected to the rotating shaft (22) outside each row of the roller array (2) to enable each row of rollers (21) to be linked.

3. The conveying device for replacement rollers of a rolling mill according to claim 2, characterized in that: The linkage (3) includes guide wheels (31) corresponding to the number of rows of rollers (21), the rotation center of each guide wheel (31) is fixedly connected to the rotating shaft (22) outside each row of the roller array (2), adjacent guide wheels (31) are connected by a belt (32), and the driving device (33) is transmission-connected to any of the guide wheels (31).

4. The conveying device for replacement rollers of a rolling mill according to claim 3, characterized in that: A placement slot (13) extending along the column direction of the roller array (2) is provided in the middle of the mounting frame (1), and one of the roller arrays (2), a linkage (3) and a driving device (33) are respectively distributed on both sides of the placement slot (13).

5. The conveying device for replacement rolls of a rolling mill according to any one of claims 1 to 4, characterized in that: A coupling (4) is provided between adjacent rollers (21) in the same row of the same roller array (2). The coupling (4) is respectively connected to two adjacent rotating shafts (22) and is used to control the mutual connection and disconnection of the two rotating shafts (22). A bearing (41) is provided on the outer sleeve of the coupling (4). The bearing (41) is supported by a fixing seat (42). The fixing seat (42) is provided on the mounting frame (1).

6. The conveying device for replacement rollers of a rolling mill according to claim 5, characterized in that: Annular brushes (44) are provided at both ends of the coupling (4); an iron block (46) to which an electromagnetic coil (45) is fixed is provided inside the coupling (4); the electromagnetic coil (45) is spirally designed and wound around the outer wall of the iron block (46); interfaces at both ends of the electromagnetic coil (45) are electrically connected to the brushes (44) at both ends of the coupling (4).

7. The conveying device for replacement rollers of a rolling mill according to claim 6, characterized in that: The invention also includes a steering device (5), the steering device (5) including first gears (51) respectively sleeved on two rotating shafts (22) connected to the coupling (4), a second gear (52) that can be raised and lowered is provided between the two first gears (51), the first gear (51) and the second gear (52) are both in a frustum shape, the top surfaces of the two first gears (51) face each other, and the top surface of the second gear (52) faces upward; When the second gear (52) rises, the second gear (52) meshes with the two first gears (51) at the same time, the coupling (4) controls the two rotating shafts (22) to be disconnected, and the two adjacent rollers (21) roll in opposite directions; When the second gear (52) descends, the second gear (52) is disengaged from the two first gears (51), the coupling (4) controls the connection of the two rotating shafts (22), and the two adjacent rollers (21) roll in the same direction.

8. The conveying device for replacement rolls of a rolling mill according to any one of claims 1 to 4, characterized in that: A collecting trough (6) is respectively provided on both sides of the mounting frame (1), and the collecting trough (6) is used to collect the replacement rollers.

9. The conveying device for replacement rollers of a rolling mill according to claim 8, characterized in that: Limit rods (62) extending left and right are respectively provided on the front and rear sides of the collecting trough (6); one end of the limit rod (62) is swingably connected to the collecting trough (6), and the other end can swing to the top of the mounting frame (1) and block the transportation of the replacement roller.

10. The conveying device for replacement rollers of a rolling mill according to claim 9, characterized in that: The mounting frame (1) is provided with a connecting frame (14) extending forward and backward. The connecting frame (14) is arranged at the interval between adjacent rollers (21) of the same roller array (2). A positioning groove (15) is provided on the upper surface of the connecting frame (14). The positioning groove (15) is adapted to the position of the limiting rod (62). When the free end of the limiting rod (62) swings onto the mounting frame (1), the limiting rod (62) is embedded in the positioning groove (15) for positioning.

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