High-precision composite straightening machine for high-strength steel and multi-roller lower roller box adjusting mechanism
By designing the multi-roll down-roll box adjustment mechanism of the high-precision composite straightening machine, the problem of insufficient straightening accuracy of high-strength steel is solved, and the straightening effect of high precision and high rigidity is achieved, and the quality of the plate and strip is improved.
Patent Information
- Application Number
- CN202422301140.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-20
AI Technical Summary
It is difficult to effectively straighten high-strength steel with traditional pulling machines, and the straightening accuracy is difficult to ensure, resulting in a decrease in the quality of the plate and strip.
A high-precision composite straightening machine is designed, including a multi-roll down roller box adjustment mechanism, which adopts a multi-roll upper roller box, a multi-roll down roller box, an anti-horizontal bending roller box, an anti-horizontal bending roller box and a bending roller box. High-precision adjustment is achieved through the combination of lifting mechanism, swing mechanism and a gap elimination mechanism.
It improves the straightening accuracy and rigidity of high-strength steel, ensures the quality of the plate and strip, and solves the problem of straightening high-strength steel.
Smart Images
Figure CN223083550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a stretch-bending straightening machine, in particular to a composite stretch-bending straightening machine and a multi-roll lower roll box adjustment mechanism. Background Art
[0002] In the metallurgical industry, correcting and straightening the shape defects of metal plastic processing products is an important finishing process. Strip materials often have various defects such as sickle bend, edge wave, and camber during rolling or cooling and transportation processes, and various straightening processes must be carried out to make the products reach a qualified state.
[0003] Common stretch straightening machines have three forms: two-bend two-straightening, two-bend one-straightening, and one-bend one-straightening. Among them, the two-bend one-straightening form is the most widely used and is mostly used for straightening aluminum materials and plain carbon steel.
[0004] With the progress of technology, the market has higher and higher requirements for the strength and precision of strip materials. For high-strength plain carbon steel, stainless steel and other steels with higher strength properties, the existing traditional structure stretch straightening machines are difficult to meet the market demand even after two or more times of straightening.
[0005] The existing combined box stretch straightening machines on the market are generally composed of a stretch-bending straightening machine and a parallel roll straightening machine. Although the straightening effect on high-strength steel has been improved, after using for a period of time, the straightening effect of the strip becomes worse, and maintenance personnel are required to carry out regular maintenance. The precision is difficult to guarantee, and the quality of the strip cannot be improved, bringing a bad user experience to users. Therefore, it is urgent to develop a stretch-bending straightening machine for straightening high-strength steel and with high quality.
[0006] Bending, waviness, camber, etc. of strip materials. Through various straightening processes, defects such as bending can be eliminated under the action of external forces, making the products reach a qualified state.
[0007] The correction of the shape defects of metal plastic processing products is one of the important finishing processes. Rolled materials often have various shape defects during the rolling process or in subsequent cooling and transportation processes, such as the bending of bars, profiles and pipes, and the bending, waviness, camber, etc. of strip materials. Through various straightening processes, defects such as bending can be eliminated under the action of external forces, making the products reach a qualified state.
[0008] Bending, waviness, camber, etc. of strip materials. Through various straightening processes, defects such as bending can be eliminated under the action of external forces, making the products reach a qualified state.
[0009] The correction of shape defects in metal plastic processing products is one of the important finishing processes. During the rolling process or subsequent cooling and transportation processes of rolled materials, various shape defects often occur, such as the bending of bars, profiles, and pipes, and the bending, waviness, and camber of sheet and strip materials. Through various straightening processes, defects such as bending can be eliminated under the action of external forces, enabling the product to reach a qualified state. Summary of the Invention
[0010] The purpose of the present utility model is to overcome the above deficiencies of the prior art and provide a high-precision composite straightening machine for high-strength steel, which is used to meet the new usage requirements of straightening high-strength steel with high strength and high-quality requirements of users, and solves the problem that it is difficult for existing traditional tension straightening machines to straighten high-strength sheet and strip or the straightening accuracy cannot be guaranteed. This composite tension and bending straightening machine has the characteristics of ingenious structure, good rigidity, and high precision.
[0011] Another purpose of the present utility model is to provide a multi-roll lower roll box adjustment mechanism.
[0012] The technical solution of the present utility model is: a high-precision composite straightening machine for high-strength steel, including a frame. Straightening rolls are respectively installed at the inlet and outlet of the frame. A bending roll box is provided on the frame of the straightening roll near the inlet. The bending roll box includes a lower bending roll box and an upper bending roll box. A multi-roll roll box is provided on the frame of the straightening roll near the outlet. The multi-roll roll box includes a multi-roll upper roll box, a multi-roll lower roll box, and a multi-roll lower roll box adjustment mechanism; there are an anti-transverse bending roll box and an anti-longitudinal bending roll box on the frame between the bending roll box and the multi-roll roll box;
[0013] The multi-roll lower roll box adjustment mechanism includes a multi-roll lower roll box, a swing mechanism, a lifting mechanism, and a multi-roll lower roll box backlash elimination mechanism;
[0014] The lifting mechanism includes a lifting frame. The swing shaft is installed on the lifting frame through a self-lubricating bearing. The swing shaft is in transitional fit with the self-lubricating bearing. The eccentric wheel is installed on the swing shaft through a key, and the swing wheel and the eccentric wheel are installed in cooperation; the lifting frame has an arc surface;
[0015] The swing mechanism includes a swing reduction motor, a swing shaft, and a swing frame; the swing reduction motor is installed on the lifting frame. The swing reduction motor is a hollow shaft. One end of the swing shaft is inserted into the hollow shaft of the swing reduction motor. The swing reduction motor rotates to drive the swing shaft to rotate; both ends of the swing frame are installed in cooperation with the arc surface of the lifting frame through the arc surface. The middle part of the swing frame is installed in cooperation with the swing wheel; the swing reduction motor rotates to drive the swing shaft to rotate. The eccentric wheel is installed on the swing shaft and rotates together with the swing shaft. The eccentric wheel and the swing wheel are installed in transitional fit. The eccentric wheel drives the swing wheel, and the swing wheel drives the swing frame to rotate around the arc surface; during adjustment, there is relative movement between the eccentric wheel and the swing wheel;
[0016] The backlash elimination mechanism includes a backlash elimination rod and ear seats; the ear seats are composed of upper backlash elimination blocks and lower backlash elimination blocks; the upper backlash elimination blocks are fixed at both ends of the swing frame, and the lower backlash elimination blocks are fixed at both ends of the lifting frame; the multi-roll lower roll box is installed on the swing frame and swings with the swing frame. There are arc plates on both sides of the multi-roll lower roll box. The arc plate positioning surfaces on the arc plates are concentric with the arc surfaces on the two end panels of the swing frame. The upper backlash elimination block positioning surfaces on the upper backlash elimination blocks are concentric with the arc surfaces on the two end panels of the swing frame. The swing frame positioning arc surface is the main positioning surface, and the arc plate positioning surface and the upper backlash elimination block positioning surface are auxiliary positioning surfaces.
[0017] The swing frame and the lifting frame are installed with an arc transition fit. The backlash elimination rod is installed on the swing frame and the lifting frame to eliminate the gap between the swing frame and the lifting frame. One end of the pin bolt on the swing frame is fitted with the chute of the swing wheel through the flat shaft plane. The chute is used to limit the pin bolt. During operation, the pin bolt adjusts the extended length through the lock nut to make the pin bolt squeeze the swing wheel.
[0018] One end of the swing shaft is inserted into the inner hole of the hollow shaft of the swing reduction motor through a flat key; there is an inner hole in the middle of the swing wheel, and the eccentric wheel is embedded in the inner hole of the swing wheel; the arc surfaces on the two end panels of the swing frame are the swing frame positioning arc surfaces that cooperate with the arc surfaces of the lifting frame.
[0019] The lifting mechanism further includes a reduction motor, two couplings, and two elevators. The reduction motor and the elevators are installed on the machine frame. The copper sliding plate is installed on the lifting frame. The couplings connect the reduction motor and the two elevators in series; the reduction motor drives the elevators to drive the lifting frame to rise or fall along the window of the machine frame through the copper sliding plate, thereby controlling the height of the lifting frame; the self-lubricating bearings are installed in the panel holes at both ends of the lifting frame, and the keys are installed in the key grooves of the swing shaft.
[0020] The middle part of the swing frame is installed in cooperation with the swing wheel through a bracket, a positioning and locking part. The positioning and locking part includes a positioning and locking shaft and a lock nut. The positioning and locking shaft is a pin bolt.
[0021] The machine frame is welded by steel plates and has an overall frame structure. The straightening rollers are installed on the machine frame through flanges. There are a total of five straightening rollers. The multi-roll upper roll box is a five-roll upper roll box, and the multi-roll lower roll box is a six-roll lower roll box; the five-roll upper roll box includes two hydraulic cylinders and a second support plate; the hydraulic cylinders are installed on the machine frame; the second support plate is installed at the end of the hydraulic cylinders; the hydraulic cylinders drive the second support plate to rise and fall, and the second support plate drives the five-roll upper roll box to rise or fall, thereby controlling the five-roll upper roll box to reach the working position or leave the working position.
[0022] The lower bending roll box includes a reduction motor, two couplings, and two elevators; the reduction motor and the elevators are installed on the machine frame. The couplings connect the reduction motor and the two elevators in series; the reduction motor drives the elevators to drive the lower bending roll box to rise or fall, thereby controlling and adjusting the working height of the lower bending roll box.
[0023] The anti-transverse bending roll box includes a reduction motor, two couplings, and two elevators; the reduction motor and the elevators are installed on the frame, and the couplings connect the reduction motor and the two elevators in series; the reduction motor drives the elevators to drive the anti-transverse bending roll box to rise or fall, thereby controlling and adjusting the working height of the anti-transverse bending roll box.
[0024] The upper bending roll box includes two hydraulic cylinders and a second support plate; the hydraulic cylinders are installed on the frame; the second support plate is installed at the end of the hydraulic cylinders; the hydraulic cylinders drive the second support plate to rise or fall, and the second support plate drives the upper bending roll box to rise or fall, thereby controlling the upper bending roll box to reach the working position or disengage from the working position.
[0025] The anti-longitudinal bending roll box includes a reduction motor, two couplings, two elevators, and a first support plate; the reduction motor and the two elevators are installed on the frame, the first support plate is installed on the elevators, the couplings connect the reduction motor and the two elevators in series, the reduction motor drives the elevators to drive the first support plate to rise and fall, and the rise and fall of the first support plate drives the anti-longitudinal bending roll box to rise or fall, thereby controlling and adjusting the working height of the anti-longitudinal bending roll box.
[0026] A multi-roll lower roll box adjustment mechanism, characterized in that it includes a swing mechanism, a lifting mechanism, and a backlash elimination mechanism installed on the multi-roll lower roll box;
[0027] The lifting mechanism includes a lifting frame. The swing shaft is installed on the lifting frame through a self-lubricating bearing, the swing shaft is in transitional fit with the self-lubricating bearing, the eccentric wheel is installed on the swing shaft through a key, and the swing wheel and the eccentric wheel are installed in cooperation; the lifting frame has an arc surface;
[0028] The swing mechanism includes a swing reduction motor, a swing shaft, and a swing frame; the swing reduction motor is installed on the lifting frame, and the swing reduction motor rotates to drive the swing shaft to rotate; both ends of the swing frame are installed in cooperation with the arc surface of the lifting frame through the arc surface, and the middle part of the swing frame is installed in cooperation with the swing wheel; the swing reduction motor rotates to drive the swing shaft to rotate, the eccentric wheel is installed on the swing shaft and rotates together with the swing shaft, the eccentric wheel and the swing wheel are installed in transitional fit, the eccentric wheel drives the swing wheel, and the swing wheel drives the swing frame to rotate around the arc surface. During adjustment, there is relative movement between the eccentric wheel and the swing wheel.
[0029] It further includes a backlash elimination mechanism, and the backlash elimination mechanism includes a backlash elimination rod and an ear seat; the ear seat is composed of an upper backlash elimination block and a lower backlash elimination block; the upper backlash elimination block is fixed at both ends of the swing frame, and the lower backlash elimination block is fixed at both ends of the lifting frame;
[0030] The multi-roll lower roll box is installed on the swing frame and swings with the swing of the swing frame. There are arc-shaped plates on both sides of the multi-roll lower roll box. The arc-shaped plate positioning surfaces on the arc-shaped plates are concentric with the arc-shaped surfaces on the end panels of the swing frame. The upper anti-play block positioning surface on the upper anti-play block is concentric with the arc-shaped surfaces on the end panels of the swing frame. The swing frame positioning arc surface is the main positioning surface, and the arc-shaped plate positioning surface and the upper anti-play block positioning surface are auxiliary positioning surfaces.
[0031] In view of the characteristics of high-strength steel straightening, which has large load and high strength, the inventor requires the straightening machine to have stable accuracy and high rigidity. Based on this, the opening adjustment reference of the medium roll type straightening machine in the high-precision composite straightening machine is designed as large arc contacts on both sides, adopting surface-to-surface contact, which has a large contact area, is not easy to wear, and has high accuracy, effectively improving the quality of the strip.
[0032] The arc-shaped plate positioning surfaces of the arc-shaped plates on both sides of the six-roll lower roll box are concentric with the swing frame positioning arc surfaces on the end panels of the swing frame. The upper anti-play block positioning surface on the upper anti-play block is concentric with the swing frame positioning arcs at both ends of the swing frame. The swing frame positioning arc surface is the main positioning surface, and the arc-shaped plate positioning surface and the upper anti-play block positioning surface are auxiliary positioning surfaces, effectively ensuring that the lifting and swinging mechanisms of the multi-roll lower roll box always swing or lift around the symmetry center. Brief Description of the Drawings
[0033] Figure 1 is the front view of the present utility model;
[0034] Figure 2 is one of the side views of the present utility model;
[0035] Figure 3 is the second side view of the present utility model;
[0036] Figure 4 is the front view of the assembly of the multi-roll lower roll box adjustment mechanism;
[0037] Figure 5 is the side view of the assembly of the multi-roll lower roll box adjustment mechanism;
[0038] Figure 6 is the top view of the assembly of the multi-roll lower roll box adjustment mechanism;
[0039] Figure 7 is the front view of the six-roll lower roll box;
[0040] Figure 8 is the front view of the swing mechanism;
[0041] Figure 9 is the front view of the lifting mechanism;
[0042] In the figure, 1 is the frame, 2 is the lower bending roll box, 3 is the anti-transverse bending roll box, 4 is the upper bending roll box, 5 is the anti-longitudinal bending roll box, 6 is the five-roll upper roll box, 7 is the six-roll lower roll box, 9 is the swing mechanism, 10 is the lifting mechanism, 11 is the lifting hydraulic cylinder, 12 is the five-roll lifting device, 13 is the straightening roll, 14 is the first support plate, 15 is the reduction motor, 16 is the second support plate, 17 is the coupling, 18 is the elevator, 19 is the swing shaft, 20 is the eccentric wheel, 21 is the backlash eliminator rod, 24 is the flange, 25 is the key, 26 is the swing reduction motor, 27 is the copper slide plate, 28 is the lifting frame, 29 is the swing frame, 30 is the self-lubricating bearing, 31 is the swing wheel. Specific implementation mode
[0043] Figure 1 Among them, the frame 1 is welded by steel plates and has an overall frame structure; the straightening roll 13 is installed on the frame 1 through the flange 24. There are a total of five straightening rolls 13.
[0044] The lower bending roll box 2 includes a reduction motor 15, two couplings 17, and two elevators 18. The reduction motor 15 and the elevators 18 are installed on the frame 1, and the coupling 17 connects the reduction motor 15 and the two elevators 18 in series; the reduction motor 15 drives the elevators 18 to drive the lower bending roll box 2 to rise or fall, thereby controlling and adjusting the working height of the lower bending roll box 2.
[0045] The anti-transverse bending roll box 3 includes a reduction motor 15, two couplings 17, and two elevators 18; the reduction motor 15 and the elevators 18 are installed on the frame 1, and the coupling 17 connects the reduction motor 15 and the two elevators 18 in series; the reduction motor 15 drives the elevators 18 to drive the anti-transverse bending roll box 3 to rise or fall, thereby controlling and adjusting the working height of the anti-transverse bending roll box 3.
[0046] The upper bending roll box 4 includes two hydraulic cylinders 11 and a second support plate 16; the hydraulic cylinders 11 are installed on the frame 1; the second support plate 16 is installed at the end of the hydraulic cylinders 11; the hydraulic cylinders 11 drive the second support plate 16 to rise or fall, and the second support plate 16 drives the upper bending roll box 4 to rise or fall, thereby controlling the upper bending roll box 4 to reach the working position or disengage from the working position.
[0047] The anti-longitudinal bending roll box 5 includes a reduction motor 15, two couplings 17, two elevators 18, and a first support plate 14; the reduction motor 15 and the two elevators 18 are installed on the frame 1, the first support plate 14 is installed on the elevators 18, the coupling 17 connects the reduction motor 15 and the two elevators 18 in series, the reduction motor 15 drives the elevators 18 to drive the first support plate 14 to lift, and the lifting of the first support plate 14 drives the anti-longitudinal bending roll box 5 to rise or fall, thereby controlling and adjusting the working height of the anti-longitudinal bending roll box 5.
[0048] The five-roll upper roll box 6 includes two hydraulic cylinders 11 and a second supporting plate 16. The hydraulic cylinders 11 are installed on the frame 1. The second supporting plate 16 is installed at the end of the hydraulic cylinders 11. The hydraulic cylinders 11 drive the second supporting plate 16 to move up and down, and the second supporting plate 16 drives the five-roll upper roll box 6 to rise or fall, thereby controlling the five-roll upper roll box 6 to reach the working position or disengage from the working position.
[0049] The multi-roll lower roll box adjustment mechanism includes a six-roll lower roll box 7, a swing mechanism 9, a lifting mechanism 10, and a backlash elimination mechanism.
[0050] The lifting mechanism 10 includes a reduction motor 15, two couplings 17, two elevators 18, and a lifting frame 28. The reduction motor 15 and the elevators 18 are installed on the frame 1. The couplings 17 connect the reduction motor 15 and the two elevators 18 in series. The copper sliding plate 27 is installed on the lifting frame 28. The self-lubricating bearing 30 is installed in the panel holes 100 at both ends of the lifting frame 28. The swing shaft 19 is installed on the lifting frame 28 through the self-lubricating bearing 30. The swing shaft 19 has an interference fit with the self-lubricating bearing 30. The key 25 is installed in the keyway of the swing shaft 19. The eccentric wheel 20 is installed on the swing shaft 19 through the key 25 and can rotate with the swing shaft 19. The swing wheel 31 and the eccentric wheel 20 are installed in a matching way, that is, the eccentric wheel 20 is inserted into the inner hole of the swing wheel 31. The reduction motor 15 drives the elevators 18, driving the lifting frame 28 to rise or fall along the window of the frame 1 through the copper sliding plate 27, thereby controlling the height of the lifting frame 28.
[0051] The swing mechanism 9 includes a swing reduction motor 26 and a swing frame 29. The swing reduction motor 26 is installed on the lifting frame 28. The swing reduction motor 26 has a hollow shaft. One end of the shaft head of the swing shaft 19 is inserted into the inner hole of the hollow shaft of the swing reduction motor 26 through a flat key. A stop block 92 is installed at the other end of the swing shaft 19. The two ends of the swing frame 29 are installed in a matching way with the arc surfaces of the lifting frame 28. There are swing frame positioning arc surfaces 33 on the two end panels of the swing frame 29 that match the arc surfaces of the lifting frame 28. The middle part of the swing frame 29 is installed in a matching way with the swing wheel 31 through a bracket, a positioning and locking part. An oil cup 93 is installed on one side of the swing wheel 31. The positioning and locking part includes a positioning and locking shaft and a locking nut. The positioning and locking shaft is a pin bolt 91.
[0052] The swing reduction motor 26 rotates to drive the swing shaft 19 to rotate. The eccentric wheel 20 is installed on the swing shaft 19 and rotates with the swing shaft 19. The eccentric wheel 20 and the swing wheel 31 are installed with an interference fit, and there is relative movement between the eccentric wheel 20 and the swing wheel 31. The swing wheel 31 is installed in a matching way with the swing frame 29. The eccentric wheel 20 drives the swing wheel 31, and the swing wheel 31 drives the swing frame 29 to rotate around the arc surface. During operation, the maximum swing angle of the swing frame 29 is 1°.
[0053] The backlash elimination mechanism includes a backlash elimination rod 21 and ear seats. The ear seats are composed of an upper backlash elimination block 210 and a lower backlash elimination block 211. The upper backlash elimination block 210 is fixed at both ends of the swing frame 29, and the lower backlash elimination block 211 is fixed at both ends of the lifting frame 28.
[0054] The six-roll lower roll box 7 is installed on the swing frame 29 and swings as the swing frame 29 swings to solve the problem of adjusting the working angle. The adjustment direction is that the inlet of the strip is close to the strip pressing up, and the outlet is far from the strip deviation. The inlet reduction amount is greater than the outlet reduction amount. There are arc-shaped plates 70 on both sides of the six-roll lower roll box 7. The arc-shaped plate positioning surface 71 on the arc-shaped plate 70 is concentric with the swing frame positioning arc surface 33 on the two end panels of the swing frame 29. The upper backlash elimination block positioning surface 32 of the upper backlash elimination block 210 is concentric with the swing frame positioning arc 33 at both ends of the swing frame 9. The swing frame positioning arc surface 33 is the main positioning surface, and the arc-shaped plate positioning surface 71 and the upper backlash elimination block positioning surface 32 are auxiliary positioning surfaces, effectively ensuring that the multi-roll lower roll box lifting and swinging mechanism always swings or lifts around the symmetry center.
[0055] During assembly, an arc clearance fit is used for the installation between the swing frame 29 and the lifting frame 10. The backlash elimination rod 21 is installed on the swing frame 9 and the lifting frame 10 to eliminate the clearance between the swing frame 29 and the lifting frame 10. One end of the pin bolt 91 passes through the flat shaft plane of the swing frame 29 and fits with the chute of the swing wheel 31. The chute is used to limit the pin bolt 91, and the pin bolt 91 adjusts the extended length through a lock nut. During operation, the pin bolt 91 squeezes the swing wheel 31, and the swing reduction motor 26 rotates to drive the swing shaft 19 to rotate, thereby driving the eccentric wheel 20 to rotate together. The rotation of the eccentric wheel 20 drives the swing wheel 31 to move, and the swing wheel 31 pushes the swing frame 29 to swing; when the swing frame 29 swings, the six-roll lower roll box 7 swings together, thereby controlling and adjusting the working angle of the six-roll lower roll box 7.
Claims
1. A high-precision composite straightening machine for high-strength steel, characterized in that: It includes a frame (1), straightening rollers (13) are respectively installed at the inlet and outlet of the frame (1). A bending roller box is provided on the frame (1) of the straightening roller (13) near the inlet. The bending roller box includes a lower bending roller box (2) and an upper bending roller box (4). A multi-roller box is provided on the frame (1) of the straightening roller (13) near the outlet. The multi-roller box includes a multi-roller upper roller box, a multi-roller lower roller box, and a multi-roller lower roller box adjustment mechanism; There are a transverse bending prevention roller box (3) and a longitudinal bending prevention roller box (5) on the frame (1) between the bending roller box and the multi-roller box; The multi-roller lower roller box adjustment mechanism includes a multi-roller lower roller box, a swing mechanism (9), a lifting mechanism (10), and a backlash elimination mechanism; The lifting mechanism (10) includes a lifting frame (28). A swing shaft (19) is installed on the lifting frame (28) through a self-lubricating bearing (30). The swing shaft (19) is in transitional fit with the self-lubricating bearing (30). An eccentric wheel (20) is installed on the swing shaft (19) through a key (25), and a swing wheel (31) is installed in cooperation with the eccentric wheel (20); the lifting frame (28) has an arc surface; The swing mechanism (9) includes a swing reduction motor (26), a swing shaft (19), and a swing frame (29); the swing reduction motor (26) is installed on the lifting frame (28), and the swing reduction motor (26) rotates to drive the swing shaft (19) to rotate; both ends of the swing frame (29) are installed in cooperation with the arc surface of the lifting frame (28) through the arc surface, and the middle part of the swing frame (29) is installed in cooperation with the swing wheel (31); the swing reduction motor (26) rotates to drive the swing shaft (19) to rotate. The eccentric wheel (20) is installed on the swing shaft (19) and rotates together with the swing shaft (19). The eccentric wheel (20) and the swing wheel (31) are installed in transitional fit. The eccentric wheel (20) drives the swing wheel (31), and the swing wheel (31) drives the swing frame (29) to rotate around the arc surface; during adjustment, there is relative movement between the eccentric wheel (20) and the swing wheel (31); The backlash elimination mechanism includes a backlash elimination rod (21) and an ear seat; the ear seat is composed of an upper backlash elimination block (210) and a lower backlash elimination block (211); the upper backlash elimination block (210) is fixed to both ends of the swing frame (29), and the lower backlash elimination block (211) is fixed to both ends of the lifting frame (28); The multi-roller lower roller box is installed on the swing frame (29) and swings along with the swing of the swing frame (29). Arc-shaped plates (70) are provided on both sides of the multi-roller lower roller box (7). The arc-shaped plate positioning surface (71) on the arc-shaped plate (70) is concentric with the arc surface on both end panels of the swing frame (29). The upper backlash elimination block positioning surface (32) of the upper backlash elimination block (210) is concentric with the arc surface on both end panels of the swing frame (29). The swing frame positioning arc surface (33) is the main positioning surface, and the arc-shaped plate positioning surface (71) and the upper backlash elimination block positioning surface (32) are auxiliary positioning surfaces.
2. The high-precision composite straightening machine for high-strength steel according to claim 1, wherein: The swing frame (29) and the lifting frame (28) are installed with an arc transition fit, and the clearance eliminating rod (21) is installed on the swing frame (29) and the lifting frame (28) to eliminate the clearance between the swing frame (29) and the lifting frame (28). The swing frame (29) is matched with the slide groove of the swing wheel (31) through the flat shaft plane at one end of the pin bolt (91). The slide groove is used to limit the pin bolt (91). When working, the pin bolt (91) is adjusted to extend the length through the locking nut so that the pin bolt (91) squeezes the swing wheel (31).
3. The high-precision composite straightening machine for high-strength steel according to claim 1, characterized in that: The swing reduction motor (26) is a hollow shaft, the shaft head at one end of the swing shaft (19) is inserted into the hollow shaft of the swing reduction motor (26), and the shaft head at one end of the swing shaft (19) is inserted into the inner hole of the hollow shaft of the swing reduction motor (26) through a flat key; the swing wheel (31) has an inner hole in the middle, and the eccentric wheel (20) is embedded in the inner hole of the swing wheel (31); the arc surfaces on the panels at both ends of the swing frame (29) are swing frame positioning arc surfaces (33) that match the arc surfaces of the lifting frame (28).
4. The high-precision composite straightening machine for high-strength steel according to claim 1, characterized in that: The lifting mechanism (10) further comprises a reduction motor (15), two couplings (17), and two lifts (18); the reduction motor (15) and the lifts (18) are mounted on the frame (1); the copper slide plate (27) is mounted on the lift frame (28); the coupling (17) connects the reduction motor (15) and the two lifts (18) in series; the reduction motor (15) drives the lifts (18) to drive the lift frame (28) to rise or fall along the window of the frame (1) through the copper slide plate (27), thereby controlling the height of the lift frame (28); the self-lubricating bearings (30) are mounted in the panel holes (100) at both ends of the lift frame (28), and the key (25) is mounted in the keyway of the swing shaft (19).
5. The high-precision composite straightening machine for high-strength steel according to claim 1, wherein: The middle part of the swing frame (29) is mounted by means of a bracket, a positioning locking member and a swing wheel (31), wherein the positioning locking member comprises a positioning locking shaft and a locking nut, and the positioning locking shaft is a pin bolt (91).
6. The high-precision composite straightening machine for high-strength steel according to claim 1, characterized in that: The frame (1) is welded from steel plates and has an integral frame structure. The straightening rollers (13) are mounted on the frame (1) via flanges (24). There are five straightening rollers (13) in total. The multi-roller upper roller box is a five-roller upper roller box (6), and the multi-roller lower roller box is a six-roller lower roller box (7). The five-roller upper roller box (6) includes two hydraulic cylinders (11) and a second support plate (16). The hydraulic cylinder (11) is mounted on the frame (1). The second support plate (16) is mounted on the end of the hydraulic cylinder (11). The hydraulic cylinder (11) drives the second support plate (16) to rise and fall, and the second support plate (16) drives the five-roller upper roller box (6) to rise or fall, thereby controlling the five-roller upper roller box (6) to reach a working position or leave the working position.
7. The high-precision composite straightening machine for high-strength steel according to claim 1, wherein: The lower bending roller box (2) comprises a reduction motor (15), two couplings (17), and two lifts (18); the reduction motor (15) and the lifts (18) are mounted on a frame (1), and the coupling (17) connects the reduction motor (15) and the two lifts (18) in series; the reduction motor (15) drives the lifts (18) to drive the lower bending roller box (2) to rise or fall, thereby controlling and adjusting the working height of the lower bending roller box (2).
8. The high-precision composite straightening machine for high-strength steel according to claim 1, wherein: The anti-transverse bending roller box (3) includes a reduction motor (15), two couplings (17), and two elevators (18); the reduction motor (15) and the elevators (18) are installed on the frame (1), and the couplings (17) connect the reduction motor (15) and the two elevators (18) in series; the reduction motor (15) drives the elevators (18) to drive the anti-transverse bending roller box (3) to rise or fall, thereby controlling and adjusting the working height of the anti-transverse bending roller box (3). The upper bending roller box (4) includes two hydraulic cylinders (11) and a second support plate (16); the hydraulic cylinders (11) are installed on the frame (1); the second support plate (16) is installed at the end of the hydraulic cylinders (11); the hydraulic cylinders (11) drive the second support plate (16) to rise or fall, and the second support plate (16) drives the upper bending roller box (4) to rise or fall, thereby controlling the upper bending roller box (4) to reach the working position or disengage from the working position. The anti-longitudinal bending roller box (5) includes a reduction motor (15), two couplings (17), two elevators (18), and a first support plate (14); the reduction motor (15) and the two elevators (18) are installed on the frame (1), the first support plate (14) is installed on the elevators (18), the couplings (17) connect the reduction motor (15) and the two elevators (18) in series, the reduction motor (15) drives the elevators (18) to drive the first support plate (14) to rise and fall, and the rise and fall of the first support plate (14) drives the anti-longitudinal bending roller box (5) to rise or fall, thereby controlling and adjusting the working height of the anti-longitudinal bending roller box (5).
9. A multi-roll lower roll box adjustment mechanism, characterized in that: It includes a swing mechanism (9), a lifting mechanism (10), and a backlash elimination mechanism installed in the multi-roll lower roller box. The lifting mechanism (10) includes a lifting frame (28). The swing shaft (19) is installed on the lifting frame (28) through a self-lubricating bearing (30). The swing shaft (19) is in transitional fit with the self-lubricating bearing (30). The eccentric wheel (20) is installed on the swing shaft (19) through a key (25), and the swing wheel (31) is installed in cooperation with the eccentric wheel (20); the lifting frame (28) has an arc surface. The swing mechanism (9) includes a swing reduction motor (26), a swing shaft (19), and a swing frame (29); the swing reduction motor (26) is installed on the lifting frame (28), and the swing reduction motor (26) rotates to drive the swing shaft (19) to rotate; both ends of the swing frame (29) are installed in cooperation with the arc surface of the lifting frame (28) through the arc surface, and the middle of the swing frame (29) is installed in cooperation with the swing wheel (31); the swing reduction motor (26) rotates to drive the swing shaft (19) to rotate, the eccentric wheel (20) is installed on the swing shaft (19) and rotates together with the swing shaft (19), the eccentric wheel (20) and the swing wheel (31) are installed in transitional fit, the eccentric wheel (20) drives the swing wheel (31), and the swing wheel (31) drives the swing frame (29) to rotate around the arc surface; during adjustment, there is relative movement between the eccentric wheel (20) and the swing wheel (31).
10. The multi-roll lower roll box adjustment mechanism according to claim 9, characterized in that: It further includes a backlash elimination mechanism, and the backlash elimination mechanism includes a backlash elimination rod (21) and an ear seat; the ear seat is composed of an upper backlash elimination block (210) and a lower backlash elimination block (211); the upper backlash elimination block (210) is fixed at both ends of the swing frame (29), and the lower backlash elimination block (211) is fixed at both ends of the lifting frame (28). The multi-roll lower roll box is installed on the swing frame (29) and swings along with the swing of the swing frame (29). There are arc-shaped plates (70) on both sides of the multi-roll lower roll box (7). The arc-shaped plate positioning surfaces (71) on the arc-shaped plates (70) are concentric with the arc surfaces on the end panels of the swing frame (29). The upper backlash elimination block positioning surface (32) of the upper backlash elimination block (210) is concentric with the arc surfaces on the end panels of the swing frame (29). The swing frame positioning arc surface (33) is the main positioning surface, and the arc-shaped plate positioning surface (71) and the upper backlash elimination block positioning surface (32) are auxiliary positioning surfaces.