Straightening equipment convenient to maintain and used for hot-dip galvanized steel strip production and method thereof

Abstract

The invention discloses straightening equipment convenient to maintain and used for hot-dip galvanized steel strip production and a method thereof, and relates to the technical field of steel strip straightening, the straightening equipment comprises a supporting frame horizontally arranged on the ground, and one end of the top of the supporting frame is fixedly connected with two symmetrically-distributed stand columns. According to the convenient-to-maintain straightening equipment for production of the hot-dip galvanized steel strip and the method thereof, through a split type bearing seat formed by an upper fixing ring and a lower fixing ring and a detachable connecting structure, a dismounting rod can be separated only by dismounting a bolt, so that a bearing and a straightening roller can be taken out quickly, and a polygonal connecting rod is matched with an elliptical hole of a vertical rod; the lifting rings are higher than the tops of the straightening rollers, connection of lifting equipment is facilitated, operation is easy and convenient, the maintenance efficiency is improved, the balance weight bases at the bottoms of the vertical rods and the connecting rods form a stable frame, and the straightening rollers are kept balanced and prevented from shaking in the lifting process; meanwhile, the device can be safely placed on the ground for maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of steel strip straightening, in particular to a straightening device and method for producing hot-dip galvanized steel strips which are easy to maintain. Background Art

[0002] Straightening equipment for steel strip production is industrial equipment used to correct shape defects such as bending, waving, and buckling of metals such as steel strips during rolling, cooling or transportation. Its core principle is to use mechanical force to cause plastic deformation of the strip to restore its straightness.

[0003] A prior art Chinese patent (CN117862273A) discloses a copper-plated steel strip straightening machine. This machine can straighten and press the copper-plated steel strip, adjust its position during straightening, and tap the strip before straightening, effectively improving its straightness and material properties, enhancing the straightening effect. The machine comprises a base frame, a feed roller base, and a smoothing roller base. The feed roller base and smoothing roller base are located on top of the base frame. The copper-plated steel strip is manually rolled onto the feed roller seat, and the two electric rollers, the electric winding roller seat and the electric push rod are turned on. The electric roller drives the copper-plated steel strip to rotate and move, and the rotating pressing frame continuously presses the copper-plated steel strip. The electric winding roller seat tightens the copper-plated steel strip, which can straighten and press the copper-plated steel strip. The surface of the copper-plated steel strip tightened by the electric winding roller seat is flat and the gap is uniform, thereby improving the straightening effect of the copper-plated steel strip; there is also a Chinese patent of the prior art (CN216539723U) that discloses a steel strip straightening device, including a base, at least one set of first support blocks is fixed on the top of the base, and the inner parts of the two first support blocks Each of the two first support blocks is equipped with a sleeve block, a sliding groove is provided inside the two first support blocks, and each of the sleeve blocks is slidably connected to the first support block through the sliding groove, an upper main shaft is rotatably connected between the two sleeve blocks, a top plate is commonly installed on the top of the two first support blocks, and a lower main shaft is rotatably installed between the two first support blocks, straightening rollers are installed on the outer walls of the upper main shaft and the lower main shaft, and one of the sleeve blocks is connected to a threaded rod by screwing; by installing the sleeve block and the threaded rod inside the first support block, the possibility of not being able to use the straightening device due to different thicknesses of the hot-dip galvanized strip steel is avoided, thereby increasing the practicality of the device.

[0004] Although the existing technology can overcome the above-mentioned shortcomings, there are still other problems in its operation: the steel strip straightening is carried out through multiple roller structures. The traditional steel strip straightening equipment has the problems of cumbersome maintenance and disassembly and low maintenance efficiency; the lifting operation of large rollers is not stable enough, and the rotation speeds of multiple rollers are easily inconsistent, which makes it difficult to ensure the quality of the steel strip. Summary of the Invention

[0005] The purpose of the present invention is to provide a straightening device for hot-dip galvanized steel strip production that is easy to maintain and a method thereof, so as to solve the problems of cumbersome maintenance and disassembly and low maintenance efficiency of traditional steel strip straightening equipment in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a straightening device for hot-dip galvanized steel strip production that is easy to maintain, comprising a support frame arranged horizontally on the ground, two symmetrically distributed columns fixedly connected to one end of the top of the support frame, and symmetrically distributed guide rails fixedly connected to both sides of the top of the support frame; A slider is slidably connected to the top of the guide rail, and three straightening rollers are installed between the two columns and the two sliders, and one of the straightening rollers is installed between the two columns, and the other two straightening rollers are installed in parallel between the two sliders. A rotating shaft is fixedly connected to the middle of each straightening roller, and polygonal connecting rods are provided at both ends of the rotating shaft. The outer side of the polygonal connecting rod is sleeved with a vertical rod located on the outer side of the two ends of the rotating shaft, and an elliptical hole is provided in the middle of the vertical rod, and the top of the elliptical hole is an arc structure, and the bottom is a polygonal structure matching the polygonal connecting rod.

[0007] Preferably, the tops of the two vertical poles are fixedly connected with a lifting ring, and the lifting ring is higher than the top of the straightening roller, the bottoms of the vertical poles are fixedly connected with a counterweight seat, and a connecting rod is fixedly connected between the counterweight seats at the bottoms of the two vertical poles.

[0008] Preferably, the top of the slider and the top of the column are fixedly connected with connecting columns, and the connecting columns are symmetrically distributed at both ends of each rotating shaft. The tops of every two connecting columns are detachably connected with disassembly rods via bolts, and the bolts pass through the disassembly rods and are threadedly connected to the connecting columns.

[0009] Preferably, the top of the slider and the top of the column are fixedly connected with a lower fixing ring, the bottom of the disassembly rod is fixedly connected with an upper fixing ring, and the lower fixing ring and the upper fixing ring are spliced together to form a bearing seat, a fixed bearing is engaged in the bearing seat, and the fixed bearing is sleeved on both ends of the rotating shaft.

[0010] Preferably, both ends of the guide rail are fixedly connected to a limit seat, both ends of the top of the support frame are fixedly connected to a mounting seat, a screw rod is rotatably connected between the two limit seats, a spline shaft is rotatably connected between the two mounting seats, and the spline shaft is distributed parallel to the screw rod.

[0011] Preferably, both ends of the rotating shaft are fixedly connected with synchronous bevel gears, and the outer sides of the two columns are rotatably connected with synchronous transmission rods perpendicular to the rotating shaft through bearing seats, and the synchronous transmission rods are engaged with the synchronous bevel gears through bevel gears, and the spline shaft is engaged with the synchronous bevel gears through bevel gears.

[0012] Preferably, a collar is slidably connected to the outer side of the spline shaft, and a symmetrically distributed bevel gear ring is fixedly connected to the outer side of the collar, the bevel gear ring of the collar is engaged with the synchronous bevel gear at the end of the rotating shaft between the sliders, the outer side of the slider is fixedly connected to a mounting frame, and the collar is rotatably connected to the inside of the mounting frame.

[0013] Preferably, a threaded hole is provided inside the slider, and the screw rod is threadedly matched with the threaded hole. The top of the support frame is rotatably connected to a synchronous drive rod perpendicular to the screw rod through a bearing seat, and the screw rod is engaged with the synchronous drive rod through a bevel gear. One end of the synchronous drive rod is fixedly connected to a rotating handle.

[0014] Preferably, both ends of the support frame are fixedly connected to an outer frame, and the upper end of the outer frame is fixedly connected to a double-layer distributed material guide roller, the gap between the two material guide rollers is aligned with the top of the straightening rollers at both ends of the support frame, and a support bar is fixedly connected to the inner side of the support frame, and the support bar is parallel to the bottom of the counterweight seat.

[0015] A straightening method for hot-dip galvanized steel strip production straightening equipment that is easy to maintain, the specific method steps are as follows: S1: Pass the hot-dip galvanized steel strip through the double-layer guide rollers on the outer frames at both ends of the support frame, so that the center line of the steel strip is vertically aligned with the axis of the straightening roller; S2: Drives the synchronous transmission rod to rotate the straightening rollers fixed between the columns, and synchronizes the drive of the spline shaft and the collar through the meshing of the bevel gears, so that the three straightening rollers rotate synchronously; the steel strip enters the straightening area along the guide rollers and forms a U-shaped path between the three straightening rollers; S3: Operate the rotating handle according to the thickness of the steel strip: When processing thick steel strips, the rotating handle drives the synchronous drive rod to rotate, which drives the screw to rotate through the bevel gear. The screw pushes the slider along the guide rail away from the fixed roller, increasing the distance between the straightening rollers and increasing the clamping force. When processing thin steel strips, rotate the handle counterclockwise to drive the slider closer to the fixed roller, reducing the distance between the straightening rollers and reducing the clamping force. S4: During maintenance and disassembly, loosen the bolts at the top of the connecting column, remove the disassembly rod, separate the upper and lower fixing rings, and take out the fixed bearing; hook the lifting equipment to the lifting ring at the top of the vertical pole, lift the vertical pole vertically, and engage the polygonal connecting rod through the polygonal structure of the elliptical hole to lift the straightening roller and the rotating shaft off the support frame as a whole, and use the counterweight seat to maintain the lifting balance; S5: During installation, lower the lifting assembly to its original position, snap the fixed bearing into the bearing seat, replace the disassembly rod and tighten it with bolts, and make sure that the bottom of the counterweight seat is in parallel contact with the support bar.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention relates to a straightening device and method for hot-dip galvanized steel strip production that is easy to maintain. The split bearing seat and the detachable connecting structure formed by the upper and lower fixing rings can separate the disassembly rod by simply removing the bolts, thereby realizing the rapid removal of the bearing and the straightening roller. The polygonal connecting rod cooperates with the elliptical hole of the vertical pole, and the polygonal structure at the bottom realizes precise engagement, which facilitates the stable lifting of the straightening roller during hoisting. The lifting ring is higher than the top of the straightening roller, which facilitates the connection of the hoisting equipment, is simple to operate, and improves maintenance efficiency. The counterweight seat and the connecting rod at the bottom of the vertical pole form a stable frame, which keeps the straightening roller balanced during the lifting process and prevents shaking, while facilitating safe placement on the ground for maintenance.

[0017] The distance between the straightening rollers can be adjusted steplessly through the sliding cooperation of the guide rails and the sliders. The layout of the fixed rollers and the adjustable rollers can flexibly adapt to steel strips of different thicknesses. When processing thick steel strips, the roller spacing is increased to enhance the straightening force. When processing thin steel strips, the spacing is reduced to prevent excessive deformation. This dynamic adjustment mechanism significantly improves the equipment's compatibility with materials of different specifications. After maintenance is completed, simply put the straightening rollers back in place, reinstall the disassembly rods and tighten the bolts to secure the bearings and ensure that the equipment quickly resumes operation.

[0018] The synchronous transmission rod and spline shaft ensure the synchronous rotation of the three rollers. The sliding bevel gear design of the collar automatically maintains the meshing state when the slider moves, effectively solving the transmission dislocation problem caused by the adjustable roller displacement and ensuring the speed consistency of the rollers in different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the supporting frame structure of the present invention; Figure 3 This is a schematic diagram of the slider structure of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the slider of the present invention; Figure 5 This is a schematic diagram of the straightening roller structure of the present invention; Figure 6 This is a schematic diagram of the pole structure of the present invention; Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram; Figure 8 This is a schematic diagram of the spline shaft structure of the present invention; Figure 9 Schematic diagram of the screw rod structure of the present invention; Figure 10 It is a schematic diagram of the ring structure of the present invention.

[0020] In the figure: 1. Support frame; 2. Vertical column; 3. Guide rail; 4. Slider; 5. Connecting column; 6. Disassembly rod; 7. Lower fixing ring; 8. Upper fixing ring; 9. Fixed bearing; 10. Rotating shaft; 11. Straightening roller; 12. Polygonal connecting rod; 13. Vertical column; 14. Lifting ring; 15. Oval hole; 16. Counterweight seat; 17. Connecting rod; 18. Limit seat; 19. Mounting seat; 20. Synchronous bevel gear; 21. Synchronous transmission rod; 22. Spline shaft; 23. Ring; 24. Mounting frame; 25. Threaded hole; 26. Screw; 27. Synchronous drive rod; 28. Rotating handle; 29. Outer frame; 30. Guide roller; 31. Support bar. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] For example 1, please refer to Figure 1 - Figure 7The present invention provides the following technical solution: a straightening device for hot-dip galvanized steel strip production that is easy to maintain, comprising a support frame 1 horizontally arranged on the ground, with two symmetrically distributed columns 2 fixedly connected to one end of the top of the support frame 1, and symmetrically distributed guide rails 3 fixedly connected to both sides of the top of the support frame 1; a slider 4 is slidably connected to the top of the guide rail 3, three straightening rollers 11 are installed between the two columns 2 and the two sliders 4, and one of the straightening rollers 11 is installed between the two columns 2, and the other two straightening rollers 11 are installed parallel to the two sliders 4, and a rotating shaft 10 is fixedly connected to the middle of each straightening roller 11, and polygonal connecting rods 12 are provided at both ends of the rotating shaft 10. The outer side of the polygonal connecting rod 12 is sleeved with a vertical rod 13 located on the outer side of the two ends of the rotating shaft 10, and an elliptical hole 15 is provided in the middle of the vertical rod 13, and the top of the elliptical hole 15 is an arc-shaped structure. And the bottom is a polygonal structure that matches the polygonal connecting rod 12; the tops of the two uprights 13 are fixedly connected to a lifting ring 14, and the lifting ring 14 is higher than the top of the straightening roller 11, the bottom of the upright 13 is fixedly connected to a counterweight seat 16, and a connecting rod 17 is fixedly connected between the counterweight seats 16 at the bottom of the two uprights 13; the top of the slider 4 and the top of the column 2 are fixedly connected to the connecting column 5, and the connecting column 5 is symmetrically distributed at both ends of each rotating shaft 10, and the tops of every two connecting columns 5 are detachably connected to a disassembly rod 6 by bolts, and the bolts pass through the disassembly rod 6 and are threadedly connected to the connecting column 5; the top of the slider 4 and the top of the column 2 are fixedly connected to a lower fixing ring 7, the bottom of the disassembly rod 6 is fixedly connected to an upper fixing ring 8, and the lower fixing ring 7 and the upper fixing ring 8 are spliced with each other to form a bearing seat, and a fixed bearing 9 is engaged in the bearing seat, and the fixed bearing 9 is sleeved on both ends of the rotating shaft 10.

[0023] One end of the top is fixedly connected to two symmetrically distributed columns 2, which together with the symmetrically distributed guide rails 3 fixedly connected on both sides of the top constitute a frame system. The top of the guide rail 3 is slidably connected to the slider 4, so that the slider 4 can move freely along the guide rail 3. During the straightening process, the hot-dip galvanized steel strip is fed from one end of the equipment and forms a U-shaped path movement between the three straightening rollers 11. Three straightening rollers 11 are installed between the two columns 2 and the two sliders 4. One of the straightening rollers 11 is fixed to one end of the two columns 2 as a fixed roller, and the other two straightening rollers 11 are installed in parallel between the two sliders 4 as adjustable rollers. The middle of each straightening roller 11 is fixedly connected to a rotating shaft 10 distributed throughout. The rotating shaft 10 serves as the power transmission core of the roller to ensure that power is transmitted when the roller rotates.

[0024] When processing thicker steel strips, the slider 4 can move along the guide rail 3 away from the straightening roller 11 fixed between the two columns 2, which increases the distance between the adjustable roller and the fixed roller, thereby increasing the clamping force and applying a stronger straightening force to smooth out the protrusions of the steel strip. Conversely, for thinner steel strips, the slider 4 moves closer to the straightening roller 11 fixed between the two columns 2, reducing the clamping force and preventing the steel strip from being deformed or torn due to excessive pressure.

[0025] The straightening roller 11 can be quickly disassembled for cleaning, replacement or maintenance. First, the bearing system needs to be disassembled to release the restriction on the rotating shaft 10. The top of the slider 4 and the top of the column 2 are fixedly connected to the connecting column 5. The connecting columns 5 are symmetrically distributed at both ends of each rotating shaft 10. The top of each two connecting columns 5 is detachably connected to the disassembly rod 6 by bolts. The bolts pass through the disassembly rod 6 and are threadedly connected to the connecting column 5. During operation, loosen the bolts and remove the disassembly rod 6. This separates the lower fixing ring 7 fixedly connected to the top of the slider 4 and the top of the column 2 from the upper fixing ring 8 fixedly connected to the bottom of the disassembly rod 6, and the fixed bearing 9 can be taken out.

[0026] A polygonal connecting rod 12 is provided at both ends of the rotating shaft 10, and the outside of the polygonal connecting rod 12 is sleeved with the vertical rod 13, and an elliptical hole 15 is provided in the middle of the vertical rod 13, wherein the top of the elliptical hole 15 is an arc structure to ensure smooth rotation, and the bottom is a polygonal structure to match the polygonal connecting rod 12. The tops of the two vertical rods 13 are fixedly connected to the lifting ring 14, and the lifting ring 14 is higher than the top of the straightening roller 11, which is convenient for connecting the lifting tool. When the operator mounts the lifting equipment on the lifting ring 14, the vertical rod 13 is lifted, and the rotating shaft 10 and the straightening roller 11 move upward. During this process, the elliptical hole 15 moves on the outside of the polygonal connecting rod 12, and the polygonal connecting rod 13 is fixed to the top of the polygonal connecting rod 12. When the rod 12 and the bottom of the oval hole 15 fit together, the polygonal structures of the two interlock with each other, locking the position of the straightening roller 11 so that it cannot rotate or shift in the frame. The bottom of the vertical pole 13 is fixedly connected to the counterweight seat 16, and the connecting rod 17 is fixed between the counterweight seats 16 at the bottom of the two vertical poles 13. The connecting rod 17 provides additional balance and stability, forming a structure similar to the frame base. This allows the straightening roller 11 to be stably suspended during the lifting process to prevent shaking, and is convenient for placing on the ground for maintenance. When reinstalling, first put the straightening roller 11 back in place, then reinstall the disassembly rod 6, tighten the bolts, and ensure that the fixed bearing 9 is engaged with the bearing seat.

[0027] Example 2, based on Example 1, please refer to Figure 8 - Figure 10 and Figure 2, the following structure is also disclosed, both ends of the guide rail 3 are fixedly connected to the limit seat 18, both ends of the top of the support frame 1 are fixedly connected to the mounting seat 19, a screw rod 26 is rotatably connected between the two limit seats 18, and a spline shaft 22 is rotatably connected between the two mounting seats 19, and the spline shaft 22 is parallel to the screw rod 26; both ends of the rotating shaft 10 are fixedly connected to the synchronous bevel gear 20, and the outer sides of the two columns 2 are rotatably connected to the synchronous transmission rod 21 perpendicular to the rotating shaft 10 through the bearing seat, and the synchronous transmission rod 21 is meshed with the synchronous bevel gear 20 through the bevel gear, and the spline shaft 22 is meshed with the synchronous bevel gear 20 through the bevel gear; the outer side of the spline shaft 22 is slidably connected to the outer side of the spline shaft 22, and the outer side of the collar 23 is fixedly connected to symmetrically distributed bevel gear rings, and the bevel gear ring of the collar 23 is connected to the rotating shaft 1 between the sliders 4 0 is engaged with the synchronous bevel gear 20 at the end, the outer side of the slider 4 is fixedly connected to the mounting bracket 24, and the collar 23 is rotatably connected to the inside of the mounting bracket 24; a threaded hole 25 is provided inside the slider 4, and the screw rod 26 is threadedly matched with the threaded hole 25, and the top of the support frame 1 is rotatably connected to the synchronous drive rod 27 perpendicular to the screw rod 26 through the bearing seat, and the screw rod 26 is engaged with the synchronous drive rod 27 through the bevel gear, and one end of the synchronous drive rod 27 is fixedly connected to the rotating handle 28; both ends of the support frame 1 are fixedly connected to the outer frame 29, and the upper end of the outer frame 29 is fixedly connected to the double-layer distributed guide roller 30, the gap between the two guide rollers 30 is aligned with the top of the straightening roller 11 at both ends of the support frame 1, and the support bar 31 is fixedly connected to the inside of the support frame 1, and the support bar 31 is parallel to the bottom of the counterweight seat 16.

[0028] The movement of the slider 4 is achieved by rotating the handle 28. The top of the support frame 1 is connected to the synchronous drive rod 27 perpendicular to the screw rod 26 through a bearing seat. The screw rod 26 is meshed with the synchronous drive rod 27 through a bevel gear. One end of the synchronous drive rod 27 is fixedly connected to the rotating handle 28. When the handle 28 is manually rotated, the synchronous drive rod 27 is driven to rotate, and then the two screw rods 26 are driven to rotate simultaneously through the bevel gear. The screw rod 26 rotates through the threaded hole 25 to push the slider 4 to slide along the guide rail 3. The limit seat 18 limits the moving range of the slider 4 to prevent damage to the steel strip caused by excessive deviation. For thick steel strips, the rotating handle 28 drives the slider 4 away from the straightening roller 11 fixed between the two columns 2; for thin steel strips, it is close to the straightening roller 11 to achieve stepless modulation of the clamping force.

[0029] Both ends of the rotating shaft 10 are fixedly connected to the synchronous bevel gear 20. The outer sides of the two columns 2 are rotatably connected to the synchronous transmission rod 21 perpendicular to the rotating shaft 10 through the bearing seat. The synchronous transmission rod 21 is engaged with the synchronous bevel gear 20 through the bevel gear. When starting, the rotating shaft 10 of a straightening roller 11 is driven to engage all the synchronous bevel gears 20 through the synchronous transmission rod 21, driving the three straightening rollers 11 to rotate synchronously. In addition, the spline shaft 22 is engaged with the synchronous bevel gear 20 through the bevel gear, and because the collar 23 is kept in sync through the mounting bracket 24 and the slider 4 The outer side of the spline shaft 22 is slidably connected to the collar 23, and the outer side of the collar 23 is fixedly connected to the symmetrically distributed bevel gear ring. The bevel gear ring of the collar 23 is engaged with the synchronous bevel gear 20 at the end of the rotating shaft 10 between the sliders 4. When the slider 4 moves, the collar 23 slides on the spline shaft 22 to adjust its position, but the bevel gear ring is always engaged with the synchronous bevel gear 20 to ensure seamless power transmission. This allows the spline shaft 22 to compensate for the distance change when the position of the side roller changes, keeping the speed precisely matched with the fixed roller.

[0030] Both ends of the support frame 1 are fixedly connected to the outer frame 29, and the upper end of the outer frame 29 is fixedly connected to the double-layer distributed guide rollers 30. The gap between the two guide rollers 30 is aligned with the top of the straightening rollers 11 at both ends of the support frame 1. When the steel strip is fed, it first passes through the gap between the guide rollers 30 and enters the straightening area smoothly; after straightening, it is output from the guide roller 30 at the other end, reducing friction and guiding linear motion to avoid bending or jamming of the steel strip. The inner side of the support frame 1 is fixedly connected to the support bar 31, which is parallel to the bottom of the counterweight seat 16, providing additional support for the stabilizing vertical pole 13. The support bar 31 prevents the frame base formed by the counterweight seat 16 and the connecting rod 17 from shaking, ensuring safe operation.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A straightening device for hot-dip galvanized steel strip production that is easy to maintain, comprising a support frame (1) arranged horizontally on the ground, wherein one end of the top of the support frame (1) is fixedly connected to two symmetrically distributed uprights (2), and both sides of the top of the support frame (1) are fixedly connected to symmetrically distributed guide rails (3); Its characteristics are: The guide rail (3) is slidably connected to a slider (4) at the top, and three straightening rollers (11) are installed between the two upright posts (2) and the two sliders (4), and one straightening roller (11) is installed between the two upright posts (2), and the other two straightening rollers (11) are installed in parallel between the two sliders (4). A rotating shaft (10) is fixedly connected to the middle of each straightening roller (11), and both ends of the rotating shaft (10) are provided with polygonal connecting rods (12). The outer side of the polygonal connecting rod (12) is sleeved with upright posts (13) located on the outer sides of both ends of the rotating shaft (10), and an elliptical hole (15) is provided in the middle of the upright post (13), and the top of the elliptical hole (15) is an arc structure, and the bottom is a polygonal structure matching the polygonal connecting rod (12).

2. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 1, characterized in that: The tops of the two vertical poles (13) are fixedly connected to a lifting ring (14), and the lifting ring (14) is higher than the top of the straightening roller (11); the bottoms of the vertical poles (13) are fixedly connected to a counterweight seat (16), and a connecting rod (17) is fixedly connected between the counterweight seats (16) at the bottoms of the two vertical poles (13).

3. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 1, characterized in that: The top of the slider (4) and the top of the column (2) are both fixedly connected with a connecting column (5), and the connecting columns (5) are symmetrically distributed at both ends of each rotating shaft (10). The tops of each two connecting columns (5) are detachably connected with a disassembly rod (6) via a bolt, and the bolt passes through the disassembly rod (6) and is threadedly connected to the connecting column (5).

4. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 3, characterized in that: The top of the slider (4) and the top of the column (2) are both fixedly connected to a lower fixing ring (7), the bottom of the disassembly rod (6) is fixedly connected to an upper fixing ring (8), and the lower fixing ring (7) and the upper fixing ring (8) are spliced together to form a bearing seat, a fixed bearing (9) is engaged in the bearing seat, and the fixed bearing (9) is sleeved on both ends of the rotating shaft (10).

5. The straightening equipment for hot-dip galvanized steel strip production that is easy to maintain according to claim 1, characterized in that: Both ends of the guide rail (3) are fixedly connected to the limit seats (18), and both ends of the top of the support frame (1) are fixedly connected to the mounting seats (19). A screw rod (26) is rotatably connected between the two limit seats (18), and a spline shaft (22) is rotatably connected between the two mounting seats (19), and the spline shaft (22) and the screw rod (26) are distributed in parallel.

6. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 5, characterized in that: Both ends of the rotating shaft (10) are fixedly connected to synchronous bevel gears (20), and the outer sides of the two columns (2) are rotatably connected to synchronous transmission rods (21) perpendicular to the rotating shaft (10) through bearing seats, and the synchronous transmission rods (21) are meshed with the synchronous bevel gears (20) through bevel gears, and the spline shaft (22) is meshed with the synchronous bevel gears (20) through bevel gears.

7. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 6, characterized in that: The outer side of the spline shaft (22) is slidably connected to a collar (23), and the outer side of the collar (23) is fixedly connected to symmetrically distributed bevel gear rings, the bevel gear rings of the collar (23) are engaged with the synchronous bevel gear (20) at the end of the rotating shaft (10) between the sliders (4), the outer side of the slider (4) is fixedly connected to a mounting frame (24), and the collar (23) is rotatably connected to the inside of the mounting frame (24).

8. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 1, characterized in that: A threaded hole (25) is provided inside the slider (4), and the screw rod (26) is threadedly matched with the threaded hole (25). The top of the support frame (1) is rotatably connected to a synchronous drive rod (27) perpendicular to the screw rod (26) through a bearing seat, and the screw rod (26) is meshed with the synchronous drive rod (27) through a bevel gear. One end of the synchronous drive rod (27) is fixedly connected to a rotating handle (28).

9. The easy-to-maintain straightening equipment for hot-dip galvanized steel strip production according to claim 1, characterized in that: Both ends of the support frame (1) are fixedly connected to an outer frame (29), and the upper end of the outer frame (29) is fixedly connected to a double-layer distributed material guide roller (30), the gap between the two material guide rollers (30) is aligned with the top of the straightening roller (11) at both ends of the support frame (1), and the inner side of the support frame (1) is fixedly connected to a support bar (31), and the support bar (31) is parallel to the bottom of the counterweight seat (16).

10. The maintenance-friendly straightening equipment for hot-dip galvanized steel strip production according to claim 9, characterized in that: A straightening method of the straightening device is also disclosed, and the specific method steps are as follows: S1: Pass the hot-dip galvanized steel strip through the double-layer guide rollers (30) on the outer frames (29) at both ends of the support frame (1), so that the center line of the steel strip is vertically aligned with the axis of the straightening roller (11); S2: driving the synchronous transmission rod (21) to rotate the straightening roller (11) fixed between the columns (2), and synchronously driving the spline shaft (22) and the collar (23) through the meshing of the bevel gears, so that the three straightening rollers (11) rotate synchronously; the steel strip enters the straightening area along the guide roller (30) and forms a U-shaped path movement between the three straightening rollers (11); S3: Operate the rotating handle (28) according to the thickness of the steel strip: When processing thick steel strips, the rotating handle (28) drives the synchronous driving rod (27) to rotate, and drives the screw (26) to rotate through the bevel gear. The screw (26) pushes the slider (4) along the guide rail (3) away from the fixed roller, thereby increasing the distance between the straightening rollers and increasing the pressing force; When processing thin steel strips, rotate the handle (28) counterclockwise to drive the slider (4) toward the fixed roller, thereby decreasing the distance between the straightening rollers and reducing the pressing force; S4: During maintenance operation and disassembly, loosen the top bolts of the connecting column (5), remove the disassembly rod (6), separate the upper fixing ring (8) and the lower fixing ring (7), and take out the fixed bearing (9); hook the lifting device to the lifting ring (14) on the top of the vertical pole (13), vertically lift the vertical pole (13), and engage the polygonal connecting rod (12) through the polygonal structure of the elliptical hole (15), and lift the straightening roller (11) and the rotating shaft (10) off the supporting frame (1) as a whole, and use the counterweight seat (16) to maintain the lifting balance; S5: During installation, lower the hoisting assembly to its original position, snap the fixed bearing (9) into the bearing seat, replace the disassembly rod (6) and tighten it with bolts, and confirm that the bottom of the counterweight seat (16) is in parallel contact with the support bar (31).

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