A steel strip tension leveler with bearings that are easily replaced on line

Abstract

The application provides a steel strip tension leveler facilitating online bearing replacement, comprising a rack and a conveying mechanism arranged at both ends of the rack for tensioning and conveying the steel strip passing through the rack to avoid deviation of the steel strip; the rack comprises a first lifting group and a second lifting group installed at both ends of the top and bottom of the rack, and each of the corresponding first lifting group and the second lifting group is connected with a tension leveler roller group to drive the tension leveler roller group to approach or move away from each other to resist and straighten the bending and stretching of the steel strip; the both ends of the tension leveler roller group are respectively provided with a bearing replacement structure and a reversing structure, the reversing structure extends to the bottom surface of the tension leveler roller group, and the both sides of the reversing structure are provided with a control structure to control the action of the bearing replacement structure and the reverse rotation of the reversing structure. The steel strip tension leveler provided by the application realizes online bearing replacement, avoids the need for shutdown during bearing replacement, and improves the efficiency and quality of the steel strip tension leveling.

Description

Technical Field

[0001] This invention relates to the field of tension straightening equipment technology, and specifically to a steel strip tension straightening machine that facilitates online bearing replacement. Background Technology

[0002] In steel strip production, to obtain steel strips with excellent anisotropy and good shape, the cold-rolled and pickled steel strip needs to be fed into a tension leveler for processing. Existing tension levelers typically employ modular assembly for ease of assembly and parts replacement; multiple tension leveling roller sets are detachably mounted on the frame. These roller sets can utilize rollers with small shaft diameters and high hardness to improve the tensioning effect and extend the service life of the rollers. However, due to their small shaft diameters, these tension leveling roller sets rotate at high speeds when running synchronously with the steel strip. The rollers drive the bearings connected at both ends to rotate rapidly. This rapid rotation generates frictional heat, reducing bearing strength. Furthermore, the deformation of the stretched steel strip on the sides splashes dust into the bearing gaps, accelerating bearing wear. Frequent bearing replacements are necessary to ensure the stability of the roller rotation.

[0003] The current method for replacing bearings is usually as follows: first, stop the steel belt conveyor; then, move the tension roller assembly away from the steel belt and pull it out of the frame; after the workers replace the bearings at both ends, push the tension roller assembly back into the frame; then move the tension roller assembly back to its original position and adjust its position in multiple directions to prevent the steel belt from running off-center or unevenly stressed during high-speed operation, which could cause defects such as waviness or warping; finally, restart the machine. Summary of the Invention

[0004] In view of the above, it is necessary for the present invention to provide a steel strip straightening machine that can automatically replace bearing components, thereby improving the working efficiency and straightening quality of the straightening machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steel strip straightening machine for easy online bearing replacement includes a frame, a conveying mechanism, and a straightening roller assembly. The conveying mechanism is rotatably mounted at both ends of the frame. The straightening roller assembly is located inside the frame and moves up and down to straighten the bent steel strip. The straightening roller assembly includes a base plate with multiple first support shafts, multiple second support shafts, and at least one straightening roller stacked in a pyramid shape from bottom to top on the base plate. Vertical plates are provided at both ends of the base plate, and the two vertical plates abut against the ends of the straightening roller. Bearing components are inserted at both ends of the straightening roller. The bearing components include a bearing and a bearing rod. The bearing is located inside the vertical plate, and the bearing rod is fixed inside the bearing and extends outward at one end into the straightening roller. Bearing replacement structures are installed at both ends of the roller assembly. Each bearing replacement structure abuts against each vertical plate and is used to replace the bearing at the end of the straightening roller. A reversing structure is provided at both ends of the first support shaft. The reversing structure abuts against the first support shaft or the second support shaft to change the rotation direction of the reversing structure. The reversing structure extends downward to the bottom surface of the base plate. A control structure is also provided around both ends of the straightening roller assembly. Each control structure is connected to the bearing replacement structure and the reversing structure. The reversing structure drives the control structure to rotate synchronously. The control structure drives the bearing replacement structure to move and drives the reversing structure to switch its rotation direction, thereby driving the control structure to rotate in both directions.

[0007] Furthermore, the frame includes a first lifting assembly and a second lifting assembly. The first lifting assembly is installed at the top of the frame and includes a lifting pad. Both ends of the lifting pad are provided with gear slots. Each gear slot is equipped with a rotatable first gear. The first gear also meshes with two first transmission plates, both of which extend upward. The second lifting assembly is installed at the bottom of the frame and includes a base plate. Both ends of the base plate are provided with two transmission slots. Each transmission slot is equipped with a rotatable second gear. The second gear meshes with two second transmission plates, both of which extend downward.

[0008] Furthermore, the tensioning roller group is configured as multiple groups, which are respectively connected to the first lifting group and the second lifting group. The first lifting group and the second lifting group drive the connected tensioning roller group to rise and fall.

[0009] Furthermore, both ends of the straightening roller are provided with shaft holes, and elastic elements are connected inside the shaft holes. The bearing rod is inserted into the shaft hole to abut against the elastic elements to compress and store energy.

[0010] Furthermore, the bearing replacement structure includes a bearing component compartment, a shaft replacement plate, and two drive groups. The bearing component compartment has a hollow chamber with its open end abutting against a vertical plate for storing bearing components. The shaft replacement plate is rotatably hinged in the bearing component compartment and can replace bearing components by swaying. The drive groups are connected to the shaft replacement plate, and the rotation of the drive groups causes the shaft replacement plate to sway.

[0011] Furthermore, the shaft changing plate includes a hinge plate, a telescopic plate, a push plate, a baffle, and a locking block. The hinge plate is hinged to the bearing housing. The telescopic plate is telescopically connected to the hinge plate and abuts against the vertical plate. The push plate is slidably connected to the hinge plate to push the bearing to move. The baffle is hinged to the end of the telescopic plate that abuts against the vertical plate to block the axial movement of the bearing. The locking block is located on the telescopic plate to lock the baffle that swings to abut against the telescopic plate.

[0012] Furthermore, the reversing structure includes a reversing element, a third gear, a cam, a rotating wheel, and a rocker arm. The top end of the reversing element abuts against the first or second support shaft, and the bottom end extends to the bottom surface of the seat plate. The second gear is connected to the bottom end of the reversing element and rotates synchronously with the steering element. The cam abuts against the bottom of the steering element, and the rotation of the cam drives the lifting element to rise and fall. The rotating wheel is connected to one end of the cam and drives the cam to rotate. The rocker arm is hinged to the seat plate, with one end connected to the rotating wheel and the other end extending away from the rotating wheel. The rotation of the rocker arm drives the rotating wheel to rotate 90°.

[0013] Furthermore, the third gear meshes with the first gear or the second gear, driving the first gear and the second gear to rotate, thereby driving the first transmission plate and the second transmission plate to rotate.

[0014] Furthermore, the control structure includes several take-up shafts, a pull wire, a control rod, and a wire frame. Two take-up shafts are set as a group, and each group of take-up shafts is rotatably installed inside the frame. The pull wire is wound on each group of take-up shafts and passes through the control rod and the wire frame, winding around the outside of the straightening roller. The control rod is connected to the pull wire, and the pull wire drives the control rod to rise and fall on the seat plate, driving the bearing replacement structure and reversing structure to operate. The wire frame is installed on the side of the seat plate, driving the pull wire to abut against the side of the steel strip. The wire frame includes a rotatable diagonal brace, and the diagonal brace drives the pull wire to abut against the straightening roller.

[0015] Furthermore, both sides of the two first transmission plates and the two second transmission plates are engaged with a take-up shaft, and the first transmission plates and the second transmission plates drive the take-up shaft to rotate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The hinge plate rotates, causing the telescopic plate to swing synchronously, releasing the obstruction of the bearing components. This allows the bearing components to pop out of the straightening roller under the action of the elastic element. When the hinge plate drives the telescopic plate back to its original position, it drives the new bearing components to be inserted into the straightening roller, realizing online replacement of bearing components and effectively improving production efficiency.

[0018] 2. The pull wire is wound on the take-up shaft. The total rotation stroke of the bearing component is recorded according to the length of the pull wire, which facilitates replacement of the bearing component before it is damaged. The pull wire is also pressed against the side of the steel strip to grind the side of the steel strip flat, which improves the straightening quality of the steel strip. At the same time, it can also press the straightening roller when replacing the bearing to ensure the stability of the straightening roller.

[0019] 3. The control lever is pushed and moved by the ball at the end of the pull cable, which drives the rocker arm to rotate the wheel, which in turn drives the cam to push the reversing component up and down, changing the rotation direction of the reversing component. This causes the take-up shaft to rotate in reverse synchronously, driving the pull cable to be wound and unwound sequentially on the two take-up shafts, improving the utilization rate of the pull cable, realizing fully automated replacement of bearing components, and reducing the difficulty of operation. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of this application;

[0021] Figure 2 This is a structural diagram of the machine frame;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a cross-sectional view of the first lifting group;

[0025] Figure 6 This is a cross-sectional view of the second lifting group;

[0026] Figure 7 This is the front view of the tensioning roller assembly;

[0027] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0028] Figure 9 This is a diagram showing the internal structure of one end of the straightening roller assembly;

[0029] Figure 10 for Figure 9 Enlarged view at point D;

[0030] Figure 11 A 3D view of the bearing replacement structure;

[0031] Figure 12 for Figure 11 Enlarged view of point E in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Frame; 11. Mounting slot; 12. First lifting assembly; 121. First lifting component; 122. Hanging plate; 123. Lifting pad; 124. First gear; 125. First transmission plate; 13. Second lifting assembly; 131. Second lifting component; 132. Base plate; 133. Guide rail; 134. Second gear; 135. Second transmission plate; 2. Conveying mechanism; 21. Feed shaft; 22. Discharge shaft; 3. Straightening roller assembly; 31. Seat plate; 311. Vertical plate; 32. First support shaft; 33. Bearing components; 331. Bearing; 332. Bearing rod; 34. Second support shaft; 35. Straightening roller; 351. Elastic component; 4. Bearing replacement Structure; 41. Bearing housing; 411. Elastic plate; 412. Feed inlet; 413. Discharge outlet; 42. Shaft changing plate; 421. Hinge plate; 4211. Push rod; 422. Telescopic plate; 423. Push plate; 424. Baffle; 425. Locking block; 43. Drive assembly; 431. Connecting gear; 432. Drive gear; 433. Drive rod; 5. Reversing structure; 51. Reversing component; 52. Third gear; 53. Cam; 54. Rotary wheel; 55. Rocker arm; 6. Control structure; 61. Rewinding shaft; 62. Pull wire; 63. Control rod; 631. Wire loop; 64. Wire frame; 641. Steering wheel; 642. Diagonal brace; 643. Wire clamp. Detailed Implementation

[0034] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0035] like Figure 1 , Figure 2 and Figure 5 As shown, this embodiment of the invention provides a steel strip straightening machine for easy online bearing replacement, including a frame 1 and a conveying mechanism 2. The conveying mechanism 2 is located at both ends of the frame 1 and is used to tension and convey the steel strip passing through the frame 1 to prevent the steel strip from deviating. The frame 1 includes two side walls, each side wall having an installation groove 11, and a first lifting group 12 and a second lifting group 13 installed within the frame 1. The first lifting group 12 is located above the second lifting group 13, and the first lifting group 12 and the second lifting group 13 can extend and retract along the installation groove 11 to move closer to or further away from each other. Both the first lifting group 12 and the second lifting group 13 are connected to a straightening roller group 3. The straightening roller group 3 moves to press against the steel strip, causing the steel strip to bend and stretch. Bearing replacement structure 4 and reversing structure 5 are respectively installed at both ends of the straightening roller group 3, with the reversing structure 5 extending to the bottom of the straightening roller group 3. The straightening roller group 3 has control structures 6 at both ends. Each control structure 6 is connected to the bearing replacement structure 4 and the reversing structure 5. The control structure 6 drives the bearing replacement structure 4 to move and drives the reversing structure 5 to rotate in the opposite direction.

[0036] When straightening the steel strip is required, the steel strip is first threaded into the frame 1 and tensioned on the conveying mechanism 2 to ensure horizontal transport without deviation. Then, each first lifting group 12 extends, driving the straightening roller group 3 to press against and bend the steel strip. Next, the conveying mechanism 2 is activated to transport the steel strip. Under the action of the two straightening roller groups 3, the steel strip is stretched and straightened, improving the yield rate of the strip. Simultaneously, the reversing structure 5 rotates synchronously with the straightening roller group 3, recording the total stroke of the straightening roller group 3. When the total stroke reaches a preset value, the control structure 6 controls the bearing replacement structure 4 to operate and drives the reversing structure 5 to change the direction of rotation, causing the control structure 6 to rotate in the opposite direction, avoiding machine downtime and effectively improving production efficiency.

[0037] Please see Figures 2 to 6 Each first lifting assembly 12 includes a first lifting component 121, a hanging plate 122, and a lifting pad 123. The first lifting component 121 is a device with a drive shaft end that extends and retracts, such as a motor screw or hydraulic cylinder, and is fixed on the top surface of the frame 1 corresponding to the mounting slot 11. The hanging plate 122 is connected below the lifting component 121, with both ends extending through the corresponding mounting slots 11 to the outside of the frame 1. The extension and retraction of the lifting component 121 drives the hanging plate 122 to rise and fall. The lifting pad 123 is connected below the hanging plate 122, with both ends located in two mounting slots 11 and each end fixed with a hanger. The lifting pad 123 is suspended on the hanging plate 122 by the hanger. Pulling one end of the hanger causes the lifting pad 123 to slide along the hanging plate 122 to the outside of the frame 1, facilitating the installation of the straightening roller assembly 3 on the lifting pad 123.

[0038] Furthermore, both ends of the lifting pad 123 are provided with gear slots, and each gear slot is equipped with a rotatable first gear 124. The first gear 124 also meshes with two first transmission plates 125. The two first transmission plates 125 extend upward to the outside of the gear slot and pass through the hanging plate 122, located on both sides of the first lifting member 121.

[0039] Each second lifting assembly 13 includes a second lifting member 131, a base plate 132, and two guide rails 133. The second lifting member 131 is fixed to the bottom surface inside the frame 1 and corresponds to the mounting slot 11. The base plate 132 is fixed to the top of the second lifting member 131, and both ends of the base plate 132 are located in the two mounting slots 11 respectively. The second lifting member 131 drives the base plate 132 to move up and down within the mounting slots 11. Furthermore, both ends of the base plate 132 are provided with two transmission slots. Each transmission slot is provided with a rotatable second gear 134. The second gear 134 meshes with two second transmission plates 135. Both second transmission plates 135 extend downward outside the transmission slot and are located on both sides of the second lifting member 131. Two guide rails 133 are horizontally arranged on the base plate 132 and located on both sides of the base plate 132. The position of each guide rail 133 in contact with the inner wall of the mounting groove 11 is fixed to each other so that the tension roller group 3 can slide into the frame 1 along the guide rail 133 and correspond to the base plate 132. Under the action of the second lifting member 131, the base plate 132 passes through the gap between the two guide rails 133 and lifts the tension roller group 3 to rise and hit the steel strip.

[0040] See Figure 1 and Figure 2 The conveying mechanism 2 includes a feed shaft 21 and a discharge shaft 22, which are respectively located at both ends of the frame 1. The steel strip enters the frame 1 by abutting against the surface of the feed shaft 21, and is conveyed to one end of the discharge shaft 22 after being processed by several tension roller groups 3. A second lifting assembly 13 is installed below the discharge shaft 22, and tension roller groups 3 are installed on the second lifting assembly 13. The steel strip passes through the gap between the discharge shaft 22 and the tension roller groups 3, so that the steel strip is straight when it exits.

[0041] See Figure 4 , Figure 7 and Figure 8Each straightening roller group 3 includes a base plate 31 with three rows of limiting grooves. A rotatable first support shaft 32 is installed in each row of limiting grooves. Vertical plates 311 are located at both ends of the middle limiting groove. Each vertical plate 311 has bearing holes arranged in a triangle, and a bearing component 33 is installed in each bearing hole. The bearing component 33 includes a bearing 331 and a bearing rod 332. The bearing 331 rotates within the bearing hole, and the bearing rod 332 passes through the center of the bearing 331 and extends beyond the vertical plate 311. A second support shaft 34 is provided between each two adjacent first support shafts 32. The second support shaft 34 is located above the first support shaft 32 and abuts against the two adjacent first support shafts 32. Each second support shaft 34 has slots at both ends, and two bearing rods 332 located at the base of the triangle are inserted into the slots, allowing the second support shaft 34 to rotate around the bearing rod 332. A straightening roller 35 is installed between the two second support shafts 34. The straightening roller 35 is located above the second support shafts 34 and abuts against the two second support shafts 34. Both ends of the straightening roller 35 are provided with shaft holes. An elastic element 351 is connected in the shaft hole. The bearing rod 332 located at the apex of the triangle is inserted into the shaft hole and abuts against the elastic element 351 to compress and store energy.

[0042] See Figure 7 , Figure 11 and Figure 12The bearing replacement structure 4 is configured in two sets, respectively located at both ends of the base plate 31. Each set of bearing replacement structure 4 includes a bearing component compartment 41 abutting against the outside of the vertical plate 311. The bearing component compartment 41 has a hollow chamber for storing bearing components 33, with the opening end of the chamber facing the vertical plate 311. An elastic plate 411 is connected to the bottom of the chamber, and the elastic plate 411 pushes the bearing component 33 upward. The bearing component compartment 41 also includes a feed port 412 and a discharge port 413. The feed port 412 is located on the side of the bearing component compartment 41 for the bearing component 33 to pass through and enter the chamber for storage. The discharge port 413 is located on the side of the bearing component compartment 41 away from the vertical plate 311, and the replaced bearing component 33 is discharged from the discharge port 413. A shaft replacement plate 42 is hinged below the discharge port 413. The shaft replacement plate 42 is located inside the chamber, and the other end of the shaft replacement plate 42 can abut against the vertical plate 311. The shaft changing plate 42 includes a hinge plate 421 and a telescopic plate 422. A movable push plate 423 is provided on the hinge plate 421. An inclined groove corresponding to the push plate 423 is provided on the side wall of the bearing housing 41. The push plate 423 moves into the inclined groove and towards the vertical plate 311, pushing the bearing component 33 into the bearing hole of the vertical plate 311. The telescopic plate 422 is telescopically connected to the hinge plate 421 and extends obliquely above the bearing component 33 located at the apex of the triangle. A baffle 424 is hinged to one end of the telescopic plate 422 that abuts against the vertical plate 311. A torsion spring connects the baffle 424 and the telescopic plate 422, supporting the baffle 424 against the surface of the vertical plate 311, thus pushing the bearing component 33 at the end of the straightening roller 35 to rotate in the bearing hole position. Furthermore, a locking block 425 is provided on the telescopic plate 422 to lock the baffle 424 when it is rotated to abut against the telescopic plate 422.

[0043] Furthermore, the hinge plate 421 is provided with a push rod 4211, which passes through the locking block 425 and abuts against the baffle 424. When the telescopic plate 422 moves downward and approaches the hinge plate 421, the telescopic plate 422 drives the baffle 424 to move towards the hinge plate 421 simultaneously. The push rod 4211 abuts against the baffle 424 and swings towards the telescopic plate 422. At the same time, the push rod 4211 moves relative to the locking block 425, pushing the locking block 425 to the locking position, so that the baffle 424 is locked when connected to the locking block 425.

[0044] To facilitate the swinging of the hinge plate 421, the bearing replacement structure 4 also includes two drive groups 43. The two drive groups 43 are respectively installed on both sides of the bearing component compartment 41. Each drive group 43 includes a connecting tooth 431 and a drive tooth 432. The connecting tooth 431 is fixedly connected to the hinge plate 421, and the drive tooth 432 meshes with the connecting tooth 431. The drive tooth 432 is connected to a drive rod 433. Pushing the drive rod 433 drives the drive tooth 432 to rotate, and the drive tooth 432 drives the connecting tooth 431 to rotate synchronously, thereby causing the hinge plate 421 to swing within the cavity of the bearing component compartment 41.

[0045] When the bearing component 33 needs to be replaced, the drive rod 433 is pushed to move, causing the drive gear 432 to rotate. The drive gear 432 causes the connecting gear 431 to rotate, which in turn causes the hinge plate 421 to swing. The hinge plate 421 causes the telescopic plate 422 to swing synchronously, and at the same time, it causes the push plate 423 to move to the rear end of the bearing component 33. The telescopic plate 422 moves closer to the hinge plate 421, and the push rod 4211 pushes against the baffle 424 and swings closer to the telescopic plate 422. The push rod 4211 also pushes against the locking block 425 and moves to the locking position to lock the baffle 424. When the telescopic plate 422 moves to the bottom of the bearing component 33, the bearing component 33 is pushed away from the straightening roller 35 by the elastic element 351 and discharged from the discharge port 413. Then the hinge plate 421 resets, driving the push plate 423 to move, pushing the bearing component 33 in the bearing component compartment 41 through the bearing hole at the top of the vertical plate 311 and inserting it into the shaft hole of the straightening roller 35. Then the push rod 4211 moves, driving the locking block 425 to return to its original position, releasing the locking of the baffle 424. The baffle 424 swings under the action of the torsion spring, pushing the bearing component 33 to move and press against the elastic element 351 to compress it, so that the bearing component 33 is inserted into the shaft hole of the straightening roller 35, supporting the rotation of the straightening roller 35.

[0046] See Figure 3 , Figure 4 and Figure 9 Each bearing replacement structure 4 is connected to a control structure 6, which drives the bearing replacement structure 4 to replace the bearing component 33. Each control structure 6 includes several take-up shafts 61, with two take-up shafts 61 arranged as a group and rotatably mounted in the frame 1. The several groups of take-up shafts 61 are located on both sides of the first lifting member 121 or the second lifting member 131. The two take-up shafts 61 located on both sides of the first lifting member 121 are respectively engaged with two first transmission plates 125, and the two take-up shafts 61 located on both sides of the second lifting member 131 are respectively engaged with two second transmission plates 135. The first transmission plate 125 or the second transmission plate 135 drives the corresponding take-up shaft 61 to rotate. A pull wire 62 is wound on the take-up shaft 61. The pull wire 62 is wound around the outside of the straightening roller group 3 and abuts against the side of the steel strip, grinding the irregular side of the steel strip to make the side of the steel strip flat, so that no waviness is generated during stretching and straightening. The two ends of the pull wire 62 are provided with balls to limit the length of the pull wire 62.

[0047] The control structure 6 includes a control rod 63 that abuts against the drive rod 433 and wire frames 64 mounted on both sides of the seat plate 31. The control rod 63 is connected to the pull wire 62 and inserted into the seat plate 31. The lower end of the control rod 63 extends to the bottom surface of the seat plate 31. The control rod 63 moves up and down on the seat plate 31 through the balls at both ends of the pull wire 62. A wire loop 631 is connected to the control rod 63 and is fitted onto the pull wire 62 to change the conveying direction of the pull wire 62. The two wire frames 64 are slidably mounted on both sides of the seat plate 31. The wire frames 64 are equipped with steering wheels 641. The pull wire 62 is stretched on the steering wheels 641 to change the conveying direction of the pull wire 62, so that the pull wire 62 abuts against the side of the steel strip and grinds the side of the steel strip. Furthermore, a diagonal brace 642 is hinged to the wire frame 64. One end of the diagonal brace 642 is connected to a wire clamp 643, which is sleeved on the pull wire 62. The other end is angled towards the tension roller 35 to form a wire-supporting end, which supports the pull wire 62 for conveying above the tension roller 35. In this preferred embodiment, the position of the wire loop 631 is lower than that of the steering wheel 641. When the ball abuts against the wire loop 631, the tension of the pull wire causes the wire loop 631 to move upward, minimizing the straight-line distance between the wire loop 631 and the steering wheel 641.

[0048] See Figure 5 , Figure 7 and Figure 10 The seat plate 31 is equipped with reversing structures 5 at both ends. These structures record the total travel of the bearing component 33, allowing the bearing replacement structure 4 to replace the bearing component 33 before it fails. Each reversing structure 5 includes a reversing element 51, located at the shaft end of the straightening roller 35 between the first support shaft 32 and the second support shaft 34. The reversing element 51 can move up and down to abut against the second support shaft 34 or the first support shaft 32, respectively. The reversing element 51 extends downwards to the bottom of the seat plate 31, forming a transmission end. A third gear 52 is connected to the transmission end, meshing with either the first gear 124 or the second gear 134, driving the first gear 124 and the second gear 134 to rotate. A cam 53 abuts against the transmission end of the reversing element 51. The cam 53 rotates, pushing the reversing element 51 up and down, abutting against the first support shaft 32 or the second support shaft 34, thereby changing the rotation direction of the reversing element 51 and consequently driving the third gear 52 to rotate in both directions. Cam 53 is connected to a rotating wheel 54. Two rocker arms 55 are provided on both sides of the rotating wheel 54. The two rocker arms 55 are hinged to the seat plate 31. One end of the rocker arm 55 abuts against the rotating wheel 54, and the other end is connected to the control rod 63. The control rod 63 raises and lowers to drive the rocker arms 55 to rotate. The rotation of the rocker arms 55 drives the rotating wheel 54 to rotate 90°.

[0049] When the pull wire 62 on the take-up shaft 61 has finished unloading, the ball at the end of the pull wire 62 moves to abut against the wire loop 631, pulling the control lever 63 upward. The upward movement of the control lever 63 pushes the drive lever 433 to move, causing the bearing replacement structure 4 to replace the bearing component 33. At the same time, the pull wire 62 drives the wire clamp 643 to rotate, causing the wire-bearing end of the diagonal support rod 642 to rotate to a position lower than the straightening roller 35 and abut against the straightening roller 35, keeping the straightening roller 35 in its original position and preventing it from shifting due to the steel belt when the bearing components 33 are replaced at both ends of the straightening roller 35. Then, the control lever 63 pushes the rocker arm 55 to rotate, causing the rotating wheel 54 to rotate 90°, which in turn drives the cam 53 to rotate, causing the reversing component 51 to move and switch the rotation direction. The rotation of the take-up shaft 61 causes the ball of the pull wire 62 to retract, the control lever 63 descends, and the remaining components return to their original positions.

[0050] The embodiments described above merely illustrate implementation methods of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A steel strip straightening machine for easy online bearing replacement, comprising a frame (1), a conveying mechanism (2), and a straightening roller group (3), wherein the conveying mechanism (2) is rotatably mounted at both ends of the frame (1), and the straightening roller group (3) is disposed within the frame (1) and moves up and down to push against the bending of the steel strip for straightening and tensioning, characterized in that: The straightening roller assembly (3) includes a base plate (31), on which multiple first support shafts (32), multiple second support shafts (34) and at least one straightening roller (35) are stacked in a pyramid shape from bottom to top. Vertical plates (311) are provided at both ends of the base plate (31), and the two vertical plates (311) are respectively abutted against the two ends of the straightening roller (35). Bearing components (33) are inserted at both ends of the straightening roller (35). The bearing component (33) includes a bearing (331) and a bearing rod (332). The bearing (331) is located inside the vertical plate (311), and the bearing rod (332) is fixed inside the bearing (331) and extends outward and is inserted into the straightening roller (35). The bearing replacement structure (4) is installed at both ends of the seat plate (31). Each bearing replacement structure (4) is attached to each vertical plate (311) for replacing the bearing part (33) at the end of the straightening roller (35). The first support shaft (32) is provided with a reversing structure (5) at both ends. The reversing structure (5) abuts against the first support shaft (32) or the second support shaft (34) to change the rotation direction of the reversing structure (5). The reversing structure (5) extends downward to the bottom surface of the seat plate (31). The two ends of the straightening roller group (3) are also equipped with control structures (6). Each control structure (6) is connected to the bearing replacement structure (4) and the reversing structure (5). The reversing structure (5) drives the control structure (6) to rotate synchronously. The control structure (6) drives the bearing replacement structure (4) to move and drives the reversing structure (5) to switch the rotation direction, thereby driving the control structure (6) to rotate in the forward and reverse directions. The bearing replacement structure (4) includes a bearing component compartment (41), a shaft replacement plate (42), and two drive groups (43). The bearing component compartment (41) has a hollow chamber, and the opening end of the chamber abuts against the vertical plate (311) for storing bearing components (33). The shaft replacement plate (42) is pivotally hinged in the bearing component compartment (41) and the bearing component (33) is replaced by pivoting. The drive group (43) is connected to the shaft replacement plate (42), and the rotation of the drive group (43) drives the shaft replacement plate (42) to pivot. The shaft changing plate (42) includes a hinge plate (421), a telescopic plate (422), a push plate (423), a baffle (424), and a locking block (425). The hinge plate (421) is hinged to the bearing housing (41). The telescopic plate (422) is telescopically connected to the hinge plate (421) and abuts against the vertical plate (311). The push plate (423) is slidably connected to the hinge plate (421) and pushes the bearing (33) to move. The baffle (424) is hinged to the end of the telescopic plate (422) that abuts against the vertical plate (311) and blocks the axial movement of the bearing (33). The locking block (425) is located on the telescopic plate (422) and locks the baffle (424) that swings to abut against the telescopic plate (422). The reversing structure (5) includes a reversing element (51), a third gear (52), a cam (53), a rotating wheel (54), and a rocker arm (55). The top end of the reversing element (51) abuts against the first support shaft (32) or the second support shaft (34), and the bottom end extends to the bottom surface of the seat plate (31). The second gear (52) is connected to the bottom end of the reversing element (51) and rotates synchronously with the reversing element (51). The cam (53) abuts against the bottom of the reversing element (51). The rotation of the cam (53) drives the reversing element (51) to rise and fall. The rotating wheel (54) is connected to one end of the cam (53) and drives the cam (53) to rotate. The rocker arm (55) is hinged to the seat plate (31). One end is connected to the rotating wheel (54), and the other end extends away from the rotating wheel (54). The rotation of the rocker arm (55) drives the rotating wheel (54) to rotate 90°.

2. The steel strip straightening machine for easy online bearing replacement according to claim 1, characterized in that, The frame (1) includes a first lifting assembly (12) and a second lifting assembly (13). The first lifting assembly (12) is installed at the top of the frame (1) and includes a lifting pad (123). Both ends of the lifting pad (123) are provided with gear slots. Each gear slot is equipped with a rotatable first gear (124). The first gear (124) also meshes with two first transmission plates (125). Both first transmission plates (125) extend upward. The second lifting assembly (13) is installed at the bottom of the frame (1) and includes a base plate (132). Both ends of the base plate (132) are provided with two transmission slots. Each transmission slot is provided with a rotatable second gear (134). The second gear (134) meshes with two second transmission plates (135). Both second transmission plates (135) extend downward.

3. The steel strip straightening machine for easy online bearing replacement according to claim 2, characterized in that, The straightening roller group (3) is configured as multiple, and is respectively connected to the first lifting group (12) and the second lifting group (13). The first lifting group (12) and the second lifting group (13) drive the connected straightening roller group (3) to rise and fall.

4. The steel strip straightening machine for easy online bearing replacement according to claim 1, characterized in that, Both ends of the straightening roller (35) are provided with shaft holes, and elastic elements (351) are connected in the shaft holes. The bearing rod (332) is inserted in the shaft hole to abut against the elastic elements (351) to compress and store energy.

5. The steel strip straightening machine for easy online bearing replacement according to claim 1, characterized in that, The third gear (52) meshes with the first gear (124) or the second gear (134), driving the first gear (124) and the second gear (134) to rotate, thereby driving the first transmission plate (125) and the second transmission plate (135) to rotate.

6. The steel strip straightening machine for easy online bearing replacement according to claim 1, characterized in that, The control structure (6) includes several take-up shafts (61), pull wires (62), control rods (63), and wire frames (64). Two take-up shafts (61) are set as a group. Each group of take-up shafts (61) is rotatably installed in the frame (1). The pull wires (62) are wound on each group of take-up shafts (61) and pass through the control rods (63) and wire frames (64) and are wound around the outside of the straightening roller (35). The control rods (63) are connected to the pull wires (62). The pull wires (62) drive the control rods (63) to rise and fall on the seat plate (31) and drive the bearing replacement structure (4) and reversing structure (5) to operate. The wire frames (64) are installed on the side of the seat plate (31) and drive the pull wires (62) to abut against the side of the steel strip. The wire frames (64) include rotatable diagonal braces (642). The diagonal braces (642) drive the pull wires (62) to abut against the straightening roller (35).

7. The steel strip straightening machine for easy online bearing replacement according to claim 6, characterized in that, Both sides of the two first transmission plates (125) and the two second transmission plates (135) are engaged with a take-up shaft (61), and the first transmission plates (125) and the second transmission plates (135) drive the take-up shaft (61) to rotate.

Images